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1
Paty, François-Pierre. "Optimal transport in high dimension : obtaining regularity and robustness using convexity and projections." Electronic Thesis or Diss., Institut polytechnique de Paris, 2021. http://www.theses.fr/2021IPPAG003.
Abstract:
Au cours des dernières années, le transport optimal a gagné en popularité en apprentissage automatique comme moyen de comparer des mesures de probabilité. Contrairement aux dissimilarités plus classiques pour les distributions de probabilité, telles que la divergence de Kullback-Leibler, les distances de transport optimal (ou distances de Wasserstein) permettent de comparer des distributions dont les supports sont disjoints en prenant en compte la géométrie de l'espace sous-jacent. Cet avantage est cependant entravé par le fait que ces distances sont généralement calculées en résolvant un programme linéaire, ce qui pose, lorsque l'espace sous-jacent est de grande dimension, des défis statistiques bien documentés et auxquels on se réfère communément sous le nom de ``fléau'' de la dimension. Trouver de nouvelles méthodologies qui puissent atténuer ce problème est donc un enjeu crucial si l'on veut que les algorithmes fondés sur le transport optimal puissent fonctionner en pratique.Au-delà de cet aspect purement métrique, un autre intérêt de la théorie du transport optimal réside en ce qu'elle fournit des outils mathématiques pour étudier des cartes qui peuvent transformer, ou transporter, une mesure en une autre. De telles cartes jouent un rôle de plus en plus important dans divers domaines des sciences (biologie, imagerie cérébrale) ou sous-domaines de l'apprentissage automatique (modèles génératifs, adaptation de domaine), entre autres. Estimer de telles transformations qui soient à la fois optimales et qui puissent être généralisées en dehors des simples données, est un problème ouvert.Dans cette thèse, nous proposons un nouveau cadre d'estimation pour calculer des variantes des distances de Wasserstein. Le but est d'amoindrir les effets de la haute dimension en tirant partie des structures de faible dimension cachées dans les distributions. Cela peut se faire en projetant les mesures sur un sous-espace choisi de telle sorte à maximiser la distance de Wasserstein entre leurs projections. Outre cette nouvelle méthodologie, nous montrons que ce cadre d'étude s'inscrit plus largement dans un lien entre la régularisation des distances de Wasserstein et la robustesse.Dans la contribution suivante, nous partons du même problème d'estimation du transport optimal en grande dimension, mais adoptons une perspective différente : plutôt que de modifier la fonction de coût, nous revenons au point de vue plus fondamental de Monge et proposons d'utiliser le théorème de Brenier et la théorie de la régularité de Caffarelli pour définir une nouvelle procédure d'estimation des cartes de transport lipschitziennes qui soient le gradient d'une fonction fortement convexeOver the past few years, optimal transport has gained popularity in machine learning as a way to compare probability distributions. Unlike more classical dissimilarities for probability measures, such as the Kullback-Leibler divergence, optimal transport distances (or Wasserstein distances) can deal with distributions of disjoint supports by taking into account the geometry of the underlying ground space. This strength is, however, hampered by the fact that these distances are usually computed by solving a linear program, resulting, when this ground space is high-dimensional, in well documented statistical challenges, usually referred to as the ``curse'' of dimensionality. Finding new methodologies that can mitigate this issue is therefore crucial if one wants optimal transport-based algorithms to perform well on real data.Beyond this purely metric aspect, another appealing feature of optimal transport theory is that it provides mathematical tools to study maps that are able to morph (or push-forward) a measure into another. Such maps are playing an increasingly important role in various areas of science (biology, neuroimaging) or subdomains in machine learning (generative models, domain adaptation), to name a few. Estimating such morphings, or maps, that are both optimal and able to generalize outside the data, is an open problem.In this thesis, we propose a new estimation framework to compute proxies to the Wasserstein distance. That framework aims at handling high-dimensionality by taking advantage of the low-dimensional structures hidden in the distributions. This can be achieved by projecting the measures onto a subspace chosen so as to maximize the Wasserstein distance between their projections. In addition to this novel methodology, we show that this framework falls into a broader connection between regularization when computing Wasserstein distances and adversarial robustness.In the next contribution, we start from the same problem, estimation of optimal transport in high dimensions, but adopt a different perspective: rather than changing the ground cost, we go back to the more fundamental Monge perspective on optimal transport and use the Brenier theorem and Caffarelli's regularity theory to propose a new estimation procedure to characterize maps that are Lipschitz and gradients of strongly convex functions
2
Scetbon, Meyer. "Advances in Optimal Transport : Low-Rank Structures and Applications in Machine Learning." Electronic Thesis or Diss., Institut polytechnique de Paris, 2023. http://www.theses.fr/2023IPPAG002.
Abstract:
Les progrès récents en matière de matériel informatique, tels que le développement d'accélérateurs hautement parallèles, et la perméabilité croissante entre l'informatique, les statistiques, l'optimisation et les mathématiques appliquées ont donné naissance à une nouvelle génération d'outils capables de résoudre des problèmes d'apprentissage automatique (AA) de plus en plus complexes. Parmi ces nouveaux défis, certains nécessitent la comparaison de nuages de points ou de mesures de probabilité. Le transport optimal (TO) est devenu un outil largement utilisé dans ce contexte en raison de sa capacité à fournir une géométrie naturelle dans l'espace des distributions et à offrir une nouvelle perspective pour traiter les problèmes d'AA lorsqu'ils sont levés dans cet espace. À partir d'une fonction de coût (par exemple, une distance) défini entre les points où sont supportées les mesures, le TO consiste à trouver un couplage entre les deux mesures qui soit optimal par rapport à ce coût. En d'autres termes, le TO étend naturellement le coût entre deux points à coût entre des histogrammes de points, ou des mesures de probabilité, sous la forme d'un problème d'optimisation. De plus, en raison de sa forte composante géométrique, le TO fait l'objet d'une riche théorie mathématique sur laquelle les praticiens peuvent s'appuyer pour construire et étudier leurs modèles.Pourtant, dans leur forme originale, telle qu'elle a été proposée par Kantorovich, les distances de TO ne sont pas bien adaptées aux problèmes appliqués : (i) le calcul du TO entre des mesures discrètes revient à résoudre un programme linéaire coûteux qui requiert une complexité supercubique en le nombre de points; (ii) l'estimation du TO à l'aide de mesures échantillonnées est condamnée par la malédiction de la dimensionnalité, le TO est donc susceptible d'être dépourvue de sens lorsqu'elle est utilisée sur des échantillons provenant de densités en haute dimension. En dépit de ces difficultés, le TO s'est révélée très prometteur dans diverses applications d'AA, et les recherches en cours visent à relever ces défis et à rendre le TO plus accessible et utilisable dans la pratique.La principale approche pour pallier ces problèmes consiste à régulariser le problème d'optimisation en ajoutant un terme d'entropie a l'objectif. En ajoutant de l'entropie, on peut alors résoudre une version régularisée du problème de TO en temps et en mémoire quadratiques à l'aide de l'algorithme de Sinkhorn. De plus, cette régularisation permet d'éviter la malédiction de la dimensionnalité à condition d'avoir ajouté suffisamment d'entropie. Même si la régularisation entropique a amélioré à la fois le coût de calcul et les propriétés statistiques du transport optimal, elle souffre toujours d'une complexité quadratique qui empêche son utilisation pour des applications à grande échelle. Un des principes directeurs de cette thèse est qu'il existe encore de nombreuses opportunités de recherche pour développer de nouveaux outils algorithmiques qui peuvent exploiter ou étendre ce mode de pensée afin de rendre le TO applicable à des problèmes à grande échelle.Cette thèse se compose de deux parties principales. Dans la première partie, nous proposons de nouveaux schémas de régularisation du problème de TO et de sa variante quadratique, à savoir le problème de Gromov-Wasserstein (GW), en considérant des factorisations de bas rang à la fois du coût sous-jacent et du couplage résolvant le problème de TO. Ces nouveaux schémas de calcul ouvrent la voie à l'utilisation du problème TO dans un cadre à grande échelle. Dans la deuxième partie, nous montrons que le TO peut également offrir une nouvelle perspective sur des problèmes d'AA de longue date dès lors qu'ils sont formalisés dans l'espace des distributions. Nous adoptons ce point de vue sur deux problèmes appliqués, à savoir en équité et en robustesse, et proposons de nouvelles approches pour les aborder à l'aide du TORecent advances in hardware, such as the development of highly-parallel accelerators, and the growing permeabilitybetween computer science, statistics, optimization and applied mathematics have brought forward a new generation of tools,capable of addressing increasingly complex machine learning (ML) problems. Among these new challenges, some require the comparison of point clouds or probability measures. Optimal transport (OT) has become a widely used tool in this context due to its ability to provide a natural geometry in the space of distributions and offer a new perspective for dealing with ML problems when lifted into this space. Starting from a cost function (e.g. a distance) on the space on which measures are supported, OT consists in finding a mapping or coupling between both measures that is optimal with respect to that cost. In other words, OT naturally extends the ground cost between two points to a discrepancy function between histograms of points, or probability measures, in the form of an optimization problem. Further, as a consequence of its strong geometric component, OT is the object of a rich mathematical theory regarding its metric and topological properties, on which ML practitioners can rely to build and study their models.Yet, in their original form, as proposed by Kantorovich, OT distances are not well suited for applied problems: (i) computing OT between discrete distributions amounts to solving a large and expensive network flow problem which requires a supercubic complexity; (ii) estimating OT using sampled measures is doomed by the curse of dimensionality: the sample convergence rate of OT is exponentially slow w.r.t. the dimension of the ambient space, therefore OT is likely to be meaningless when used on samples from high-dimensional densities. Despite these challenges, OT has shown great promise in various machine learning applications, and ongoing research is aimed at addressing these challenges and making OT more accessible and usable in practice.The main approach to alleviate these issues consists in regularizing the optimization problem using an entropic regularization. By adding entropy to the objective function, one can now solves a regularized version of the OT problem in quadratic time and memory using the Sinkhorn algorithm. In addition, this regularization allows to avoid the curse of dimensionality as long as enough entropy has been added.Even though entropic regularization has improved both the computational cost and the statistical properties of optimal transport, it still suffers from a quadratic complexity that prevents its use for large-scale applications. One guiding principle of this thesis is that there are still many research opportunities to develop new algorithmic tools that can exploit or extend this way of thinking in order to make OT applicable to large-scale problems.This thesis consists of two main parts. In the first part, we propose new regularization schemes of the OT problem and its quadratic variant, namely the Gromov-Wasserstein (GW) problem, by considering low-rank factorization of both the underlying cost and the coupling solving the OT problem itself. These new computational schemes pave the way for the use of OT in the large-scale setting. In the second part, we show that OT can also offer new perspective on longstanding ML problems once lifted into the set of distributions. We adopt this point of view on two applied problems in fairness and robustness respectively and propose new approaches to tackle them using OT
3
Hill, Bryony J. "An orientation field approach to modelling fibre-generated spatial point processes." Thesis, University of Warwick, 2011. http://wrap.warwick.ac.uk/49422/.
Abstract:
This thesis introduces a new approach to analysing spatial point data clustered along or around a system of curves or fibres with additional background noise. Such data arise in catalogues of galaxy locations, recorded locations of earthquakes, aerial images of minefields, and pore patterns on fingerprints. Finding the underlying curvilinear structure of these point-pattern data sets may not only facilitate a better understanding of how they arise but also aid reconstruction of missing data. We base the space of fibres on the set of integral lines of an orientation field. Using an empirical Bayes approach, we estimate the field of orientations from anisotropic features of the data. The orientation field estimation draws on ideas from tensor field theory (an area recently motivated by the study of magnetic resonance imaging scans), using symmetric positive-definite matrices to estimate local anisotropies in the point pattern through the tensor method. We also propose a new measure of anisotropy, the modified square Fractional Anisotropy, whose statistical properties are estimated for tensors calculated via the tensor method. A continuous-time Markov chain Monte Carlo algorithm is used to draw samples from the posterior distribution of fibres, exploring models with different numbers of clusters, and fitting fibres to the clusters as it proceeds. The Bayesian approach permits inference on various properties of the clusters and associated fibres, and the resulting algorithm performs well on a number of very different curvilinear structures.
4
Tripathi, Vandana. "The management accounting needs of small enterprises and the role of small accounting practices." Thesis, Open University, 2017. http://oro.open.ac.uk/49022/.
Abstract:
Management accounting research has previously focused mostly on large firms rather than SMEs despite the significance of SMEs in the UK economy. The high failure rate of small enterprises in the UK points to the need to increase their financial robustness. Small accounting practices (SAPs) would seem to provide a possible alternative source of management accounting information for businesses too small to afford in-house accountants, but the literature over thirty years suggests that this approach has not been adopted. The sparse research in this area has proposed disparate reasons for the limited use of SAPs, without providing a definitive explanation. The intractability of the barriers to the use of SAPs for the provision of management accounting information points to a mismatch between management accounting theory, which tends to be based on neo-classical economics, and the approach used in practice in small firms and SAPs. The research investigates these barriers, assessing the extent to which owner-managers carry out management accounting in small enterprises despite the opportunity costs involved and explores the reasons behind their tendency not to seek management accounting services from SAPs. It also evaluates the potential of SAPs to provide management accounting services and the reasons limiting their promotion. The research draws on a critical realist perspective using qualitative, multiple case studies involving semi-structured interviews to examine the degree to which neo-classical economic theory,old institutional economics and new institutional sociology can explain how the barriers have arisen and why they have remained. The findings expand existing research on management accounting by bringing into focus the interaction between actors and their structural context in small firms and SAPs, demonstrating how that shapes management accounting practices, particularly with regard to the barriers to the greater use of SAPs.
5
Slack, Shaunagh. "Identifying rooting traits and their genetic bases for improved drought tolerance in winter wheat." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/49522/.
Abstract:
Winter wheat (Triticum aestivum L.) is one of the mostly widely grown arable crops worldwide, with a total annual global production of approximately 716 million tonnes. In the UK, around 14.5 million tonnes of wheat is produced annually on roughly 1.8 million hectares of land; however, 15-30% of this annual wheat yield production is lost to drought. Two field experiments were conducted in 2013-14 and 2014-15 to characterise a doubled-haploid (DH) population of 94 lines derived from a cross between the winter wheat cultivars, Rialto and Savannah, at the University of Nottingham Sutton Bonington Campus, UK (52o 50' N, 1o 15' W). This population was selected due to the genetic variation observed in previous field experiments in stay-green traits under drought and nitrogen stress in the UK and France (Foulkes et al., unpublished). A shovelomics methodology was developed for phenotyping wheat crown root traits of the mapping population and validation on soil core samples (extraction of roots by washing and root scanning using WinRHIZO software) was carried out on a subset of 14 DH lines and the two parents. In addition, two 50-cm soil column glasshouse experiments examining the two parental genotypes and the subset of 14 Rialto x Savannah DH population lines, and one 100 cm soil column glasshouse experiment examining the two parental genotypes and two Rialto x Savannah DH lines using micro-computed tomography (μCT) scanning, were carried out under well-watered and drought conditions. Two further glasshouse experiments were carried out to quantify root anatomical traits on the two parental genotypes under well-watered and drought conditions. The main objectives were to quantify genetic variation in root traits and associations with water uptake and drought tolerance in the Rialto x Savannah doubled-haploid population, to quantify mechanisms underlying associations between root traits and water capture and drought tolerance and to identify quantitative trait loci (QTL) associated with root traits and drought tolerance through genetic analysis in the Rialto x Savannah DH population. In the field experiments, drought reduced grain yield by 16.7% in 2014 and 14.9% in 2015. Amongst the DH lines, genetic variation for crown root angle, roots plant-1, roots shoot-1 and length was observed (p < 0.05). Under unirrigated conditions, root length density (RLD) at depth (40-60 cm) was positively associated with crown root angle and crown roots shoot-1 in 2014 and 2015. RLD at depth was also positively correlated with grain yield. Amongst the 94 R x S DH lines, crown root angle (greater angle = steeper root) and crown roots shoot-1 were positively associated with post-anthesis canopy stay-green as indicated by the Normalised Difference Vegetation Index (NDVI) spectral reflectance index and grain yield under unirrigated conditions. Later onset and end of flag-leaf senescence were associated with increased grain yield in 2014, but not in 2015. In the x-ray μCT soil column experiment, there were positive relationships amongst genotypes between steeper crown root angle at 5, 10 and 15 cm depths measured using μCT and RLD at 60-80 cm depth measured directly (WinRHIZO root scanning) under drought, but negative relationships under well-watered conditions. RLD at 60-80 cm was associated with water uptake and number of grains plant 1 under drought. There were positive associations between the total root length plant-1 measured using μCT and direct measurement of this trait (WinRHIZO root scanning) and between μCT root number and direct measurement of RLD in each soil horizon. In addition, there were associations between root angle in the μCT soil column experiment and crown root angle in the field measured using shovelomics techniques. Under drought, root cortical aerenchyma, the ratio of total stele area: total cortical area and cortical cell size were found to increase and total cortical area, cortical cell file number, xylem area and metaxylem area to decrease in the parental lines. Each of these anatomical traits was related to improved water uptake under drought. This indicated that root traits that may reduce the metabolic cost of soil exploration, or decrease water loss, may improve the acquisition of limiting soil resources under water-stressed conditions. For the QTL analysis in the Rialto x Savannah DH population, co-locating QTL for crown root angle and NDVI, HI and AGDM were identified under irrigated or unirrigated conditions in individual years on chromosomes 3B and 7A. QTL for stay green traits under both irrigated and unirrigated conditions were identified on chromosome 7D. Overall, these results indicated the potential for designing a winter wheat ideotype to enhance drought tolerance under UK drought with steeper crown root angle, increased crown roots shoot-1 and anatomical traits related to decreased metabolic cost, all of which increase RLD at depth, thereby improving water uptake at depth. Results from the shovelomics crown root assessments indicated scope for high-throughput field root phenotyping to quantify responses of crown root traits under drought and validate the relationship with root traits at depth, and identify QTL and candidate genes linked to these traits.
6
Kusnir, Maria Flor. "Automatic letter-colour associations in non-synaesthetes and their relation to grapheme-colour synaesthesia." Thesis, University of Glasgow, 2014. http://theses.gla.ac.uk/4922/.
Abstract:
Although grapheme-colour synaesthesia is a well-characterized phenomenon in which achromatic letters and/or digits involuntarily trigger specific colour sensations, its underlying mechanisms remain unresolved. Models diverge on a central question: whether triggered sensations reflect (i) an overdeveloped capacity in normal cross-modal processing (i.e., sharing characteristics with the general population), or rather (ii) qualitatively deviant processing (i.e., unique to a few individuals). We here address this question on several fronts: first, with adult synaesthesia-trainees and second with congenital grapheme-colour synaesthetes. In Chapter 3, we investigate whether synaesthesia-like (automatic) letter-colour associations may be learned by non- synaesthetes into adulthood. To this end, we developed a learning paradigm that aimed to implicitly train such associations while keeping participants naïve as to the end-goal of the experiments (i.e., the formation of letter-colour associations), thus mimicking the learning conditions of acquired grapheme- colour synaesthesia (Hancock, 2006; Witthoft & Winawer, 2006). In two experiments, we found evidence for significant binding of colours to letters by non-synaesthetes. These learned associations showed synaesthesia-like characteristics despite an absence of conscious, colour concurrents, correlating with individual performance on synaesthetic Stroop-tasks (experiment 1), and modulated by the colour-opponency effect (experiment 2) (Nikolic, Lichti, & Singer, 2007), suggesting formation on a perceptual (rather than conceptual) level. In Chapter 4, we probed the nature of these learned, synaesthesia-like associations by investigating the brain areas involved in their formation. Using transcranial Direct Current Stimulation to interfere with two distinct brain regions, we found an enhancement of letter-colour learning in adult trainees following dlPFC-stimulation, suggesting a role for the prefrontal cortex in the release of binding processes. In Chapter 5, we attempt to integrate our results from synaesthesia-learners with the neural mechanisms of grapheme-colour synaesthesia, as assessed in six congenital synaesthetes using novel techniques in magnetoencephalography. While our results may not support the existence of a “synaesthesia continuum,” we propose that they still relate to synaesthesia in a meaningful way.
7
Payne, John. "Usability issues of a bimanual 2D/3D interface for the design and review of MEMS." Thesis, Glasgow School of Art, 2007. http://radar.gsa.ac.uk/4922/.
Abstract:
This thesis contributes both to the specific field of MEMS, and also to the broader field of bimanual input within the field of Human Computer Interaction (HCI). A user survey, contextual and literature review, three user studies and a mock-up MEMS interface, form the argument and development of this work. The significant empirical findings of this investigation result from the three usability studies that assessed bimanual configurations with nine to eighteen MEMS domain experts and frequent 3D interface users (such as modellers and CAD users). The first speculative user study assessed the broad implications of bimanual 2D and 3D interaction. The second study investigated the usability of both spatial and constrained hardware input devices within a desktop based bimanual setting. The third evaluation investigated the device implementation and specifically compared spatial isotonic and isometric with both a constrained method 6 degree of freedom device and 2 degree of freedom mouse based 3D methods. The significant qualitative outcomes illustrate the differences in response between the MEMS domain and 3D interface users. The quantitative results describe the performance qualities of a range of bimanual implementations of 2D/3D interaction. Through the presentation of the evaluations and also the research related to bimanual task implementation, this thesis will describe an account of the usability of bimanual 2D/3D interaction systems for the desktop.
8
Dillon, Stephanie Ann. "Aged garlic extract as an antioxidant in cardiovascular disease." Thesis, Liverpool John Moores University, 2002. http://researchonline.ljmu.ac.uk/4922/.
9
Candini, Andrea. "Distribuzione efficiente di mobile sensing data tramite modello push e integrazione con PubSubHubBub." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/4922/.
10
Albaya, John. "Experimental determination of supramolecular effective molarities." Thesis, University of Sheffield, 2013. http://etheses.whiterose.ac.uk/4922/.
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Cacciagrano, Adele <1977>. "Il critico teatrale come operatore di scrittura scenica. La critica teatrale italiana tra pratica organizzativa e utilizzo dei nuovi media nel Nuovo Teatro e in alcune esperienze dal 2003 ad oggi." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amsdottorato.unibo.it/4922/.
Abstract:
La crisi del “teatro come servizio pubblico” degli Stabili, Piccolo Teatro in testa, si manifesta allo stadio di insoddisfazione interna già alla fine degli anni Cinquanta.
Se dal punto di vista della pratica scenica, la prima faglia di rottura è pressoché unanimemente ricondotta alla comparsa delle primissime messe in scena –discusse, irritanti e provocatorie- di Carmelo Bene e Quartucci (1959-60) più difficile è individuare il corrispettivo di un critico-intellettuale apportatore di una altrettanto deflagrante rottura.
I nomi di Arbasino e di Flaiano sono, in questo caso, i primi che vengono alla mente, ma, seppure portatori di una critica sensibile al “teatro ufficiale”, così come viene ribattezzato dopo il Convegno di Ivrea (1967) il modello attuato dagli Stabili, essi non possono, a ben vedere, essere considerati i veri promotori di una modalità differente di fare critica che, a partire da quel Convegno, si accompagnerà stabilmente alla ricerca scenica del Nuovo Teatro. Ma in cosa consiste, allora, questa nuova “operatività” critica?
Si tratta principalmente di una modalità capace di operare alle soglie della scrittura, abbracciando una progressiva, ma costante fuoriuscita dalla redazione di cronache teatrali, per ripensare radicalmente la propria attività in nuovi spazi operativi quali le riviste e l’editoria di settore, un rapporto sempre più stretto con i mass-media quali radio e televisione e la pratica organizzativa di momenti spettacolari e teorici al contempo -festival, convegni, rassegne e premi- per una forma di partecipazione poi identificata come “sporcarsi le mani”.
La seconda parte della tesi è una raccolta documentaria sull’oggi. A partire dal Manifesto dei Critici Impuri redatto nel 2003 a Prato da un gruppo di critici dell'ultima generazione, la tesi utilizza quella dichiarazione come punto di partenza per creare un piccolo archivio sull’oggi raccogliendo le elaborazioni di alcune delle esperienze più significative di questi dieci anni. Ricca appendice di materiali.The crisis of "theater as a public service" exemplified on the Piccolo Teatro experience, shows its internal dissatisfaction at the end of the fifties. The firsts who fights against this cultural politic was the artists, Carmelo Bene it's one of the first with his early and provocative performances. By critical side, otherwise, is more difficult to identify some critics or intellectuals bearing of a similar explosive rupture. We can recall Arbasino and Flaiano but, in this case, also if their sensitive criticism against "Theatre Established" were very important, they can not be regarded as promoters of that different way of criticism outgoing from Ivrea Conference (1967) and that accompanied New Theatre from the Sixties to Eighty . But definitively what's this new "operation" criticism? Primarily this criticism is focused on a new operative manner that located itself at the threshold of writing practices. It's a criticism embracing a gradual, but steady removal from the theatrical chronicles, a radically rethink about the critical function so it finds very interesting to create new operational areas on magazines and focused publishing, on mass-media like radio and television and as organization of festivals, conferences, exhibitions and awards - both performative both theoretical- who are identified as "the criticism that dirting its hands". The second part of the thesis is a documentary collection on today. From Manifesto del Critico Impuro written in 2003 in Prato by a group of critics of the last generation, the thesis uses that Statement as a starting point for creating a small record based on some elaboration by someone among the most significant critical experiences of these last ten years. Interesting Appendix based on rare materials.
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Percicote, Ana Paula. "Expressão imunoistoquímica de ácido retinóico, CRABP2, NFkB p100 e p105, TRAP1 e TWEAK em nefroblastomas." reponame:Repositório Institucional da UFPR, 2017. http://hdl.handle.net/1884/49122.
Abstract:
Orientadora : Drª Lúcia de NoronhaTese (doutorado) - Universidade Federal do Paraná, Setor de Ciências Biológicas, Programa de Pós-Graduação em Ciencias Biológicas (Microbiologia, Parasitologia e Patologia Básica). Defesa: Curitiba, 30/06/2017
Inclui referências : f.89-104
Resumo: O nefroblastoma, ou tumor de Wilms, é a neoplasia renal mais freqüente na infância correspondendo a 98% dos tumores renais nesta faixa etária. Apesar do prognóstico favorável uma parcela dos pacientes evolui para recidiva e óbito. Biomarcadores atuantes na progressão tumoral, proliferação, diferenciação, apoptose e recentemente descrita ação na resposta imune e inflamação, tais como ácido retinóico (AR), CRABP2, NF?B p100/52, NF?B p105/50, TRAP1 e TWEAK tem sido descritos. Este estudo tem por objetivo a avaliação da expressão imunoistoquímica de ácido retinóico (AR), CRABP2, NF?B p100/52, NF?B p105/50, TRAP1 e TWEAK em amostras parafinadas de nefroblastomas correlacionando-a com fatores prognósticos. Foram selecionados 77 espécimes de nefroblastoma provenientes de serviços de patologia. A imunoexpressão foi avaliada através de análise semiquantitativa e quantitativa. Para a análise semiquantitativa empregou-se o sistema escore de Allred e para a avaliação quantitativa, a análise morfométrica da área corada. Para a comparação de dois grupos foi utilizado o teste não-paramétrico de Mann-Whitney, enquanto para a comparação de três ou mais grupos utilizou-se o teste não-paramétrico de Kruskal-Wallis. A imunopositividade para AR, CRABP2, NF?B p100/52 e NF?B p105/50 foi encontrada tanto no núcleo quanto citoplasma. A imunoexpressão de TRAP1 e TWEAK esteve presente apenas no citoplasma das células cancerosas. Todos os tipos histológicos do nefroblastoma (blastema, epitélio e estroma) foram positivos para as seis proteínas estudadas. AR pela análise morfométrica e CRABP2 pela análise semiquantitativa apresentaram maior expressão imunoistoquímica nos pacientes com metástase (p= 0.0247 e p= 0.0128, respectivamente). Semelhante ao encontrado em relação à análise quantitativa de AR que apresentou maior imunopositividade em amostras tumorais submetidas a quimioterapia pré-cirúrgica (p= 0.0330). Observou-se a maior expressão de NF?B p105/50 em nefroblastomas em estádio I/II (p= 0.0415). NF?B p105/50 e TRAP1 através da análise semiquantitativa e TWEAK de acordo com análise quantitativa, apresentaram menor positividade em nefroblastomas tipo blastematoso (p= 0.046, p= 0.003 e p= 0.066, respectivamente). A anaplasia se associou a maior escore total de Allred de TRAP1 (p= 0.005). Não houve correlação estatística da imunoexpressão dos marcadores estudados, comprometimento nodal e evolução clínica. A análise semiquantitativa e quantitativa dos marcadores AR, CRABP2, NF?B p105/p50, TRAP1 e TWEAK apontam para potenciais biomarcadores para progressão tumoral e para a participação destas proteínas na tumorigênese do nefroblastoma. Palavras-chave: nefroblastoma; ácido retinóico; CRABP2; NF?B; TRAP1; TWEAK.
Abstract: Nephroblastoma, or Wilms' tumor, is the commonest renal cancer in children and accounts for about 98% of renal tumors in this age group. Despite of the favorable prognosis, a parcel of patients evolved to tumor relapse and death. Biomarkers acts in tumor progression, proliferation, differentiation, apoptosis and the most recent described immune and inflammation response action, as retinoic acid (RA), CRABP2, NF?B p100/52, NF?B p105/50, TRAP1 and TWEAK. The aim of this study was to evaluate the immunohistochemical expression of RA, CRABP2, NF?B p100/52, NF?B p105/50, TRAP1 and TWEAK in paraffin-embedded samples of nephroblastomas to determine whether expression correlates with prognostic factors. A total of 77 specimens from pathology services were selected. The immunoexpression was evaluated through semiquantitative and quantitative analysis. For the semiquantitative analysis, the Allred score system was used and for the quantitative evaluation, the morphometric analysis of the stained area was applied. For the comparison of two groups, the non-parametric test of Mann-Whitney was used, while for the comparison of three or more groups the Kruskal-Wallis nonparametric test was used. Immunopositivity to RA, CRABP2, NF?B p100/52 and NF?B p105/50 was found in the nucleus and cytoplasm. Immunoexpression of TRAP1 and TWEAK was present only in the cytoplasm of cancer cells. All histological types of nephroblastoma (blastema, epithelium and stroma) were positive for the six proteins studied. RA morphometric analysis and CRABP2 semiquantitative analysis presented higher immunohistochemical expression in patients with metastasis (p= 0.0247 and p= 0.0128, respectively). This is similar to the results of the quantitative analysis of RA, which showed greater immunopositivity in tumor samples of patients subjected to pre-surgical chemotherapy (p= 0.0330). The highest expression of NF?B p105/50 was observed in stage I/II nephroblastomas (p= 0.0415). NF?B p105/50 and TRAP1 semiquantitative analisys and TWEAK quantitative analisys presented lower positivity in nephroblastomas blastematal type (p= 0.046, p= 0.003 and p= 0.066, respectively). Anaplasia were associated with high TRAP1 total Allred score (P= 0.005). No significant correlation was found between the markers and variables studied, such as nodal involvement, and clinical evolution. The semiquantitative and quantitative analysis of RA, CRABP2, NF?B p100/p52, NF?B p105/p50, TRAP1 and TWEAK point to potential biomarkers for tumor progression and for the participation of these proteins in nephroblastoma tumorigenesis. Key words: nephroblastoma; retinoic acid; CRABP2; NF?B; TRAP1; TWEAK.
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Rohling, Luis José. "Evidências da falha do modelo de Gilbert-Elliott para perda de pacotes em redes wifi e análise de alternativas." reponame:Repositório Institucional da UFPR, 2017. http://hdl.handle.net/1884/49522.
Abstract:
Orientador : Prof. Dr. Carlos Marcelo PedrosoDissertação (mestrado) - Universidade Federal do Paraná, Setor de Tecnologia, Programa de Pós-Graduação em Engenharia Elétrica. Defesa: Curitiba, 18/08/2017
Inclui referências : f. 65-68
Resumo: As redes WiFi representam uma das formas de acesso à Internet mais utilizadas, sendo o estudo do comportamento das perdas de pacotes nestas redes de fundamental importância para a evolução e aplicação desta tecnologia. Porém, o modelo clássico de Gilbert-Elliott, amplamente utilizado para descarte de pacotes em redes de dados, não é necessariamente o modelo mais adequado para os diversos cenários de utilização das redes WiFi, devido ao método de controle de acesso ao meio empregado nestas redes. Para caracterizar a perda de pacotes nestas redes, este trabalho apresenta o resultado de diversas medições de erros em redes WiFi. Estas medições foram feitas a partir do envio de um tráfego de controle, registrando-se também outros parâmetros importantes da rede sob teste. Os dados de perda de pacotes do fluxo de controle foram inicialmente tratados com um filtro passa-baixa e então aplicado um processo de clusterização para obtenção dos estados da rede. Na etapa seguinte, foi realizada a análise estatística dos estados BOM e RUIM da rede, identificando-se uma dependência temporal de longa duração entre o tempo de duração de estados subsequentes, o que indica que o modelo de Gilbert-Elliott não se aplica nestes cenários. Finalmente, é apresentada uma alternativa para a modelagem de perdas de pacotes em redes WiFi considerando os dados amostrais. Como alternativa, foi analisada a aderência ao modelo Fractional Auto Regressive Integrated Moving Average (FARIMA) para o tempo de duração dos estados BOM e RUIM. Os resultados indicam que o modelo FARIMA não possui boa aderência aos dados empíricos observados, mas a análise realizada mostrou quais os motivos para a não aderência e indica quais os próximos passos nesta pesquisa. Palavras-chave: Redes sem fio. Perdas de pacotes. Modelo de Gilbert-Elliott.
Abstract: WiFi networks are widely used for Internet access. Therefore the study of packet loss in WIFi networks is very important for the evolution and application of this technology. The classic Gilbert-Elliott model for packet loss, widely used in data network, does not capture the behavior of packet loss observed in WiFi networks, mainly because the medium access control used to share the channel among the wireless devices. This work presents the result of several samples of errors in WiFi networks. The samples was made by sending a control flow, and registering the performance metrics as the packet loss, network utilization, signal-to-noise ratio, among others. The packets of control flow were used to identify the GOOD and the BAD states using a clustering method. In the next step, the statistical analysis of the duration of GOOD and BAD states of the network was performed, identifying a temporal dependence, which indicates that the Gilbert-Elliott model does not apply in these scenarios. Finally, alternative models are presented. A long range dependence is observed. The Fractionally Auto Regressive Integrated Moving Average (ARIMA) was analyzed to modeling the duration of the GOOD and BAD States. The results indicate that the FARIMA does not fit perfectly the empirical data, however, it's a good start for a new model. Key words: Wireless networks. Packet loss. Gilbert-Elliott model.
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Albernaz, Flávia Renata Motta Zanoni. "Avaliação da reserva ovariana na salpingectomia profilática em mulheres na pré menopausa, na prevenção do câncer de ovário." reponame:Repositório Institucional da UFPR, 2017. http://hdl.handle.net/1884/49322.
Abstract:
Orientador : Prof. Dr. Almir Antônio UrbanetzCoorientador : Prof. Dr. Rafael Frederico Bruns
Dissertação (mestrado) - Universidade Federal do Paraná, Setor de Ciências da Saúde, Programa de Pós-Graduação em Tocoginecologia. Defesa : Curitiba, 24/03/2017
Inclui referências : f. 69-76
Resumo: Introdução: Apesar do câncer de ovário não ser o tumor maligno ginecológico mais comum, ele é o de maior letalidade. Infelizmente a maioria dos casos de câncer de ovário são diagnosticados em estadios avançados. Isto ocorre pois até o presente momento todos os programas de rastreamento precoce falharam. Novas teorias sobre a origem do câncer do ovário tem sido descritas e investigadas e sugerem que não é no ovário que a doença se inicia e sim nas tubas uterinas. Essas teorias trazem novas perspectivas para o diagnóstico precoce e a prevenção deste agressivo tumor, através da salpingectomia profilática. Porém não está claro se realizar a salpingectomia profilática tem qualquer impacto sobre a reserva ovariana. A reserva ovariana é estimada pela combinação de certos parâmetros clínicos e endocrinológicos e de medidas ultrassonográficas. Não há um consenso sobre qual combinação de parâmetros tem o melhor valor preditivo. A concentração basal do hormônio folículo estimulante (FSH) é a medida mais simples e ainda mais amplamente aplicada da reserva ovariana. O número de folículos antrais no início da fase folicular também se correlaciona diretamente com a reserva ovariana. Apesar disso, a contagem de folículos antrais (CFA), como medida da reserva ovariana, também está sujeita a variações devido a diferenças intra e interobservador. Objetivos: Avaliar se a salpingectomia profilática em mulheres no menacme, altera a reserva ovariana; e se a contagem de folículos antrais é um método reprodutível intra e interobservador. Métodos: Participaram deste estudo as pacientes provenientes dos Ambulatórios do Complexo Hospital de Clínicas da Universidade Federal do Paraná (CHC/ UFPR). Este estudo foi aprovado pelo Comitê de Ética em Pesquisa (CEP) do CHC/UFPR . Este estudo de coorte prospectivo foi realizado no período de maio de 2015 a janeiro de 2017. As pacientes incluídas na pesquisa, fizeram avaliação hormonal laboratorial com FSH e estradiol (E2) e estudo ultrassonográfico com CFA, no pré operatório e após três meses do procedimento cirúrgico. As pacientes foram submetidas a salpingectomia bilateral (SB), preservando cuidadosamente a vascularização do ovário. Para avaliar a reprodutibilidade do método de CFA através do ultrassom bidimensional (2 D), foram feitas duas formas de avaliação, uma considerando cada ovário como uma unidade de análise e outra considerando o somatório dos folículos nos dois ovários para analisar a reserva ovariana para cada paciente. Os ovários foram avaliados duas vezes por cada investigador, com intervalo de três meses (Tempo 1 e Tempo 2), sem nenhuma ordem específica e com identificações distintas, para avaliar a variação intra e interobservador. Resultados: Foram incluídas nove pacientes no menacme com idade media de 33 anos e desvio padrão 4,26. Não houve diferença estatisticamente significativa na avaliação da modificação da reserva ovariana através diferença (?) entre os valores pós e pré operatórios de FSH e da CFA. Os valores pré e pós cirúrgicos foram homogêneos para ?FSH (-1,125 UI/ L, p = 0,260) e ?CFA (- 0,339 folículos antrais, p = 0,735). Foram avaliados 12 exames ultrassonográficos contendo as imagens dos dois ovários de uma mesma paciente para verificar a reprodutibilidade intra e interobservador. A concordância destas avaliações através do índice de Kappa foi de 0,824 (p = 0,004) para o Juiz A no Tempo 1 em relação ao Tempo 2, de 1,0 (p = 0,001) para o Juiz B no Tempo 1 em relação ao Tempo 2, de 1,0 (p= 0,001) entre os dois Juízes no Tempo 1 e de de 0,824 (p = 0,004) entre os dois Juízes no Tempo 2, demonstrando tratar-se de um método reprodutível intra e interobservador para avaliação da reserva ovariana. Conclusão: A demonstração de que a função ovariana foi avaliada através de métodos confiáveis e que a realização da salpingectomia profilática não modifica a reserva ovariana vem corroborar para as novas orientações quanto às medidas para a prevenção do câncer de ovário. Palavras-chave: Salpingectomia profilática, Câncer de ovário, Tubas uterinas, Reserva ovariana, Contagem de folículos antrais
Abstract: Introduction: Although ovarian cancer is not the most common gynecological malignancy, it is the most lethal. Unfortunately, most cases of ovarian cancer are diagnosed in advanced stages. It occurs because until now all screening programs have failed. New theories about the origin of ovarian cancer have been described and investigated and suggest that it is not in the ovary that the pathology starts but rather in the fallopian tubes. These theories provide new perspectives for early diagnosis and prevention of this aggressive tumor, through prophylactic salpingectomy. However, it is unclear whether performing prophylactic salpingectomy has any impact on the ovarian reserve. The ovarian reserve is estimated by the combination of certain clinical and endocrinological parameters and ultrasound measurements. There is no consensus on which combination of parameters has the best predictive value. The basal follicle stimulating hormone (FSH) concentration is the simplest and most widely applied measure of the ovarian reserve. The number of antral follicles at the beginning of the follicular phase also correlates directly with the ovarian reserve. Despite this, antral follicle count (AFC), as a measure of ovarian reserve, is also subject to variations due to intra and interobserver differences. Objectives: To evaluate whether prophylactic salpingectomy in premenopausal women alters the ovarian reserve; And whether the antral follicle count is a reproducible intra and interobserver method. Methods: Patients from the Complex Clinics Hospital Federal University of Paraná (CHC/ HC / UFPR) participated in this study. This study was approved by the Research Ethics Committee (CEP) of CHC / UFPR. This prospective study was performed from May 2015 to January 2017. The patients included in the study performed laboratory hormonal evaluation with FSH and estradiol (E2) and ultrasonographic study with AFC, in the preoperative period and after three months of the surgical procedure. The patients underwent bilateral salpingectomy (BS), carefully preserving the vascularity of the ovary. To evaluate the reproducibility of the AFC method through two-dimensional (2D) ultrasound, two forms of evaluation were made, one considering each ovary as a unit of analysis and another considering the sum of the follicles in the two ovaries to analyze the ovarian reserve for each patient. The ovaries were evaluated twice by each investigator at intervals of three months (Time 1 and Time 2), without any specific order and with different identifications to evaluate intra and interobserver variation. The Kappa index was used to verify the concordance of the analyzes. Results: Nine pre menopausal patients were included with mean age of 33 years and standard deviation 4.26. There was no statistically significant difference in the evaluation of the ovarian reserve change through difference (?) between the post and preoperative FSH and AFC values. Pre and postoperative values were homogenous for ?FSH (-1.125 IU / L, p = 0.260) and ?AFC (-0.339 antral follicles, p = 0.735). Twelve ultrasound examinations containing the images of the two ovaries of the same patient were evaluated to verify intra and interobserver reproducibility. The agreement of these assessments by the Kappa index was 0.824 (p = 0.004) for Judge A at Time 1 in relation to Time 2, from 1.0 (p = 0.001) for Judge B at Time 1 in relation to Time 2, of 1.0 (p = 0.001) between the two Judges at Time 1 and 0.824 (p = 0.004) between the two Judges at Time 2, demonstrating that it is a reproducible intra and interobserver method for the evaluation of the reserve Ovarian. Conclusion: The demonstration that the ovarian function was evaluated through reliable methods and that the prophylactic salpingectomy does not modify the ovarian reserve confirms the new guidelines regarding measures for the prevention of ovarian cancer. Keywords: Prophylactic salpingectomy, Ovarian neoplasms, Fallopian tubes, Ovarian reserve, Antral follicle counts
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Tsao, Cheng-Lin. "Rapid application mobilization and delivery for smartphones." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/49022.
Abstract:
Smartphones form an emerging mobile computing platform that has hybrid characteristics borrowed from PC and feature phone environments. While maintaining great mobility and portability as feature phones, smartphones offers advanced computation capabilities and network connectivity. Although the smartphone platform can support PC-grade applications, the platform exhibits fundamentally different characteristics from the PC platform. Two important problems arise in the smartphone platform: how to mobilize applications and how to deliver them effectively. Traditional application mobilization involves significant cost in development and typically provides limited functionality of the PC version. Since the mobile applications rely on the embedded wireless interfaces of smartphones for network access, the application performance is impacted by the inferior characteristics of the wireless networks. Our first contribution is super-aggregation, a rapid application delivery protocol that in tandem uses the multiple interfaces intelligently to achieve a performance that is ``better than the sum of throughputs' achievable through each of the interfaces individually. The second contribution is MORPH, a remote computing protocol for heterogeneous devices that transforms the application views on the PC platform into smartphone-friendly views. MORPH virtualizes application views independent of the UI framework used into an abstract representation called virtual view. It allows transformation services to be easily programmed to realize a smartphone friendly view by manipulating the virtual view. The third contribution is the system design of super-aggregation and MORPH that achieve rapid application delivery and mobilization. Both solutions require only software modifications that can be easily deployed to smartphones.
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Rashidi, Abbas. "Evaluating the performance of machine-learning techniques for recognizing construction materials in digital images." Thesis, Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/49122.
Abstract:
Digital images acquired at construction sites contain valuable information useful for various applications including As-built documentation of building elements, effective progress monitoring, structural damage assessment, and quality control of construction material. As a result there is an increasing need for effective methods to recognize different building materials in digital images and videos.
Pattern recognition is a mature field within the area of image processing; however, its application in the area of civil engineering and building construction is only recent.
In order to develop any robust image recognition method, it is necessary to choose the optimal machine learning algorithm.
To generate a robust color model for building material detection in an outdoor construction environment, a comparative analysis of three generative and discriminative machine learning algorithms, namely, multilayer perceptron (MLP), radial basis function (RBF), and support vector machines (SVMs), is conducted. The main focus of this study is on three classes of building materials: concrete, plywood, and brick.
For training purposes a large-size data set including hundreds of images is collected. The comparison study is conducted by implementing necessary algorithms in MATLAB and testing over hundreds of construction-site images. To evaluate the performance of each technique, the results are compared with a manual classification of building materials. In order to better assess the performance of each technique, experiments are conducted by taking pictures under various realistic jobsite conditions, e.g., different ranges of image resolutions, different distance of camera from object, and different types of cameras.
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Yu, Huei Sheng. "Parametric architecture : performative/responsive assembly components." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/49722.
Abstract:
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Architecture, 2009.Page 127 blank.
Includes bibliographical references (p. 121-122).
Current parametric design generates many possible solutions during modeling and design process, but in the final stage, only allows users to choose one solution to develop. This thesis demonstrates a design strategy for physical parametric design that embeds knowledge from simulation tools and helps parametric design still keep variations after final model. This thesis begins with an introduction of theory and practices of current parametric design and clarifies the connections between its methods and physical parametric design. Then a few new concepts and prototypes are proposed, and physical parametric designs are demonstrated. The thesis presents a series of case studies investigating specific parametric design methods. Their objectives are studying ways to implement variations from parametric design to physical world and to fix parametric design's constraint problem through the use of physical feedback loop. Some cases are related to simulation environment which can be used as a test platform for fabrication or responsive environment design: others are different data access, such as visualization. Together, these physical parametric design projects indicate how to solve the bidirectional constraint in design exploration. Finally, this paper evaluates new possibilities of this design strategy and construction method, and discusses how the physical models impact digital parametric models. key words: parametric design, Artificial Intelligence Knowledge Base ,Evolution system design, simulation environment.
by Huei Sheng Yu/Carl.
S.M.
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Jesurum, Caroline Esther 1969. "Local-rules based topological modeling of tetrahedral ceramic network structures." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/49622.
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Mondoloni, Stéphane Lucien. "A numerical method for modelling wings with sharp edges maneuvering at high angles of attack." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/49922.
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De, Jager Leon. "Die ondersteuning van leerders uit hoe risiko-gemeenskappe in primere skole." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/49922.
Abstract:
Thesis (PhD)--University of Stellenbosch, 2004.ENGLISH ABSTRACT: There are learners in the South African education system that reside and live within highrisk situations. These high-risk situations impact on the family-, scholastic and community contexts and also the relationship variables existing between these systems. The risk situations in which these learners live, cause and/or on occasion lead to early school exiting, teenage pregnancy, alcohol and substance abuse, the choice of living on the streets, youth misbehaviour and gangsterism. It is therefore important to determine and recognize the environmental contexts in which these learners find themselves to on the one hand reach a better understanding of this phenomenon, and on the other hand to organise effective aid and assistance initiatives. The following can be reported in this regard: Inconclusive evidence exists with respect to the exact nature of the problems, which confront primary school learners from high-risk situations. A shortage of effective strategies exists to support primary school learners from high-risk situations. This research is undertaken from a social constructionist, contextual ecosystemic perspective. The research is founded on a combination of both qualitative and quantitative methodological approaches and is undertaken within the interpretive research paradigm. An encompassing literature review was undertaken during which the following aspects were described and determined, namely: The problems encountered by learners from high risk situations. Recommendations from South African state departments regarding the assistance and support for learners from high-risk situations. Guidelines collected from the literature regarding the assistance and support for learners from high-risk situations. The empirical investigation is aimed at identifying the nature and extent of the prominent problems being experienced by learners from high-risk situations. Guidelines were developed by which learners from high-risk situations can be assisted and supported. These guidelines were developed on the basis of the research results yielded by the empirical investigation and a synthesis derived from literature exploration and the integration of empirical findings. The research focuses on Grade Seven learners from ten selected primary schools in the Boland region. The investigative instruments used during this research were the questionnaire, photo analysis and the focus interview. The research findings have shown that learners are more inclined to leave the school prematurely because of insufficient relationships that exists between the family, the community and the school. An integrated approach between these contexts is therefore essential to develop strategies in order to prevent learners from dropping out of school.
AFRIKAANSE OPSOMMING: Daar is leerders in die Suid-Afrikaanse onderwyssisteem wat 10 hoë risikoomstandighede woon en leef Hierdie risiko-omstandighede het 'n impak op hulle gesins-, skolastiese en gemeenskapskontekste asook die verhoudingsveranderlikes wat daar tussen hierdie sisteme bestaan. Die risiko-omstandighede waarin hierdie leerders leef, veroorsaak en/of lei soms tot byvoorbeeld voortydige skoolverlating, tienerswangerskappe, drank- en dwelmmisbruik, die keuse van 'n lewe op straat, jeugwangedrag en bendevorming. Dit is van belang om die omgewingskontekste van hierdie leerders te begryp en te verreken om enersyds tot 'n beter begrip van die fenomeen te kom, maar om andersyds effektiewe hulpverleningsinisiatiewe te ontwikkel. Die volgende kan in hierdie verband gemeld word: daar bestaan onvoldoende inligting ten opsigte van die wesenlike aard van die probleme wat leerders uit hoë risiko-omstandighede aan primêre skole ervaar; daar is 'n gebrek aan effektiewe strategieë om leerders uit hoë risiko-omstandighede aan primêre skole te ondersteun. Hierdie navorsing word onderneem vanuit 'n sosiaal-konstruksionisties, kontekstueelekosistemiese perspektief Die navorsing steun op 'n kombinasie van beide kwantitatiewe en kwalitatiewe metodologiese benaderings en word onderneem vanuit die interpreterende navorsingsparadigma. 'n Omvattende literatuurstudie is onderneem waartydens die volgende aspekte beskryfen beredeneer is: die probleme wat leerders uit hoë risiko-omstandighede ervaar. aanbevelings uit staatsdepartemente in Suid-Afrika oor die ondersteuning van leerders uit hoë risiko-omstandighede. riglyne vanuit die literatuur oor die ondersteuning van leerders uit hoë risikoomstandighede. Die empiriese ondersoek is daarop gemik om die aard en omvang van die prominente probleme wat leerders uit hoë risiko-omstandighede aan primêre skole ervaar te identifiseer. Riglyne waardeur hierdie leerders ondersteun kan word, is ontwikkel. Hierdie riglyne is ontwikkelop grond van die navorsingsresultate van die empiriese ondersoek en 'n sintese vanuit die literatuurverkenning en die integrasie van die empiriese bevindings. Die navorsing fokus op graad sewe-leerders aan tien geselekteerde primêre skole in die Boland-streek. Drie ondersoekinstrumente word tydens hierdie navorsing gebruik, naamlik die vraelys, foto-analise en die fokus-onderhoud. Die navorsingsresultate het getoon dat leerders meer geneig is om die skool voortydig te verlaat as gevolg van gebrekkige verhoudinge tussen die gesin, die gemeenskap en die skool. 'n Geïntegreerde benadering tussen hierdie kontekste is daarom belangrik om strategieë te ontwikkel wat sal verhoed dat leerders die skool voortydig verlaat.
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Kroger, Detlev G. "Air-cooled heat exchangers and cooling towers : thermal-flow performance evaluation and design." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/49822.
Abstract:
Thesis (PhD)--Stellenbosch University, 2004.ENGLISH ABSTRACT: During the last 30 years I have been involved in the theory and practice of thermal engineering and in particular, in the areas of air-cooled heat exchangers and cooling towers for the power, refrigeration, process and petrochemical industries in South Africa and internationally. During this period, I have authored and co-authored more than 120 papers that were published in technical journals or presented at conferences nationally or internationally. Most of these papers are included in a manuscript entitled "Air-cooled Heat Exchangers and Cooling Towers", in which Ipresent a systematic approach to the thermal performance evaluation and design of industrial air-cooled heat exchangers and cooling towers. This original publication also includes the relevant practice applicable to the design of cooling systems, based on my experience as a consultant to industry. Design offices throughout the world presently follow our design methods, or at least employ many of our research results. Our work has furthermore contributed to the development of improved cooling system designs (e.g. new dephlegmator header designs), components (e.g. single-row flattened finned tubes) and product improvement and quality control (e.g. performance testing and measurement of thermal contact resistance between fin and tube during production). Many of our research findings have found application in the modification of existing cooling systems. The manuscript has also been used as reference work during the presentation of short courses to practising engineers and consultants in industry and to engineering graduates at the University of Stellenbosch. A two-volume edition of this manuscript was published by PennWell Corp., Tulsa, Oklahoma, USA in 2004.
AFRIKAANSE OPSOMMING: Gedurende die laaste 30 jaar was ek betrokke by die teorie en praktyk van lugverkoelde warmteoordraers en koeltorings vir die kragopwekkings-, verkoelings-, proses- en petro-chemiesenywerhede in Suid-Afrika sowel as in die buiteland. Gedurende hierdie periode was ek outeur en mede-outeur van meer as 120 publikasies wat in tegniese tydskrifte, of by plaaslike of oorsese konferensies aangebied is. Die meeste van hierdie publikasies vorm deel van 'n manuskrip getiteld "Air-cooled Heat Exchangers and Cooling Towers" waarin ek 'n sistematiese benadering tot die bepaling van die termiese vermoë en ontwerp van industriële lugverkoelde warmteoordraers en koeltorings aanbied. Hierdie oorspronklike publikasie bevat ook die relevante praktyk wat van toepassing is op verkoelingsaanlegte. Ontwerpkantore wêreldwyd volg tans hierdie ontwerpsmetodes, of gebruik ten minste baie van ons navorsingsresultate. Ons werk het verder bygedra tot die ontwikkeling van verbeterde verkoelingsaanlegte (bv. nuwe deflegmatore), komponente (bv. enkelbuisry platvinbuise ) en verbeterde produkte en kwaliteitskontrole (bv. toetsing van verkoelingsvermoë oftermiese kontakweerstand tussen vin en buis gedurende produksie). Baie van ons bevindinge het toepassing gevind in die modifikasie van verkoelingsaanlegte. Die manuskrip is ook as verwysing gebruik gedurende die aanbieding van kort kursusse aan ingenieurs in die praktyk en aan nagraadse studente aan die Universiteit van Stellenbosch. 'n Twee-volume uitgawe van die manuskrip is deur PennWell Corp., Tulsa, Oklahome, VSA in 2004 gepubliseer.
22
Malila, Harry Clifton. "Detect, defuse and protect : preventative intervention strategies towards minimising bullying in the workplace." Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/49722.
Abstract:
Thesis (MBA)--Stellenbosch University, 2002.ENGLISH ABSTRACT: Until recently, there was little awareness of the phenomenon of workplace bullying, or of the means by which it is carried out. Even today, many people still know very little or nothing of what goes on behind closed office doors. The prevalence of workplace bullying seems to indicate a worsening trend, and it may be that everyone in the workplace is now at risk of having "an experience". Workplace bullying is the deliberate, hurtful mistreatment of a person by a bully driven by her or his need to control others at work. It is quite simply, psychological violence in the workplace, and the results thereof include psychological trauma, loss of dignity, and feelings of shame in the person being targeted or victimised. Bullying can be regarded as the use or abuse of position or power to coerce others by fear or persecution or to oppress them by force or threat. It has been identified as a more crippling and devastating problem for both employees and employers than all other work-related stresses put together. Most bullying is insidious in that it is carried out at the psychological level. Although it may be most obvious in screaming and publicly abusive episodes, it is usually more subtle and persistent. Its behaviours can include rumours, gossip and attempts to turn others against a person, stealing credit for others' work, deliberate attempts to sabotage someone's work, highly public and humiliating criticism, blame, threatened job loss or punishment. In the case of physical assault, there is no doubt that an attack has taken place. In the case of bullying, it may be months, perhaps even a year or more, before one begins to realise that the difficulty one is experiencing with a particular individual, or group of individuals, goes beyond what can reasonably be expected in one's place of work. In the research the author explored the impact of workplace bullying on the organisation and the individuals (victims) concerned. The author used a real-life case study / example in Chapter 2 to illustrate the existence and the negative effects of this workplace phenomenon. The author suggests some strategies to victims and employers on how to recognise the tactics of their tormentors, how to stop the hurt and regain their dignity, self-esteem and confidence and, furthermore, how to discourage workplace bullying and eliminate its debilitating effects. Organisations should realise that bullying at work is a hidden menace that can destroy individuals and undermine both individual and teamwork performance, and that people can never perform at their best when they are bullied. Employers and employees therefore have a mutual interest in the eradication of this workplace demoraliser, workplace bullying. Ignoring the problem will not make it go away - it will slowly eat away your organisation's bottom line.
AFRIKAANSE OPSOMMING: Daar was tot onlangs min bewustheid van die verskynsel van werkplektreitering of van die wyse waarop dit toegepas word. Selfs vandag nog weet baie mense baie min of selfs niks van wat eintlik agter geslote kantoordeure aangaan nie. Die voorkoms van werkplektreitering dui op 'n toenemende tendens, en dit kan wees dat elke persoon in die werkplek die gevaar loop om aan hierdie "ervaring" blootgestel te word. Werkplektreitering is die opsetlike en skadelike mishandeling van 'n persoon deur 'n bullebak wat gedryf word deur sy/haar behoefte om almal in die werkplek te beheer. Dit is eenvoudig sielkundige geweld in die werkplek, sowel as die resultaat daarvan, wat insluit sielkundige trauma/geweld, die verlies aan waardigheid, en gevoelens van skaamte in die persoon wat geteiken word of die slagoffer is. Werkplektreitering kan beskou word as die gebruik of misbruik van mag en posisie om vrees by ander in te boesem deur vervolging of onderdrukking of deur dwang of bedreiging. Werkplektreitering is geïndentifiseer as 'n probleem wat meer verlammend en verwoestend is as alle ander werkverwante stressors van werkgewers en werknemers saamgevoeg. Die meeste treitering is verradelik deurdat dit op 'n sielkundige vlak uitgevoer word. Alhoewel 'n geskree en openlike beledigende episodes die ooglopendste is, is dit gewoontlik meer subtiel en aanhoudend. Die gedrag van die werkplekbullebak kan insluit gerugte, skinderpraatjies, pogings om persone teen mekaar op te steek, krediet te neem vir 'n ander se werk, doelbewuste pogings om iemand se werk te saboteer, hoogs openlike en vernederende kritiek, beskuldigings, asook dreigemente met betrekking tot werksverlies of straf. Met fisieke geweld is daar geen twyfel dat 'n aanranding plaasgevind het nie. Met werkplektreitering kan dit egter maande, miskien selfs 'n jaar of meer, neem voordat 'n mens besef dat die probleme wat met 'n spesifieke individu of groep individue ondervind word verder strek as wat redelikerwys binne 'n mens se werkplek verwag kan word. In die navorsingsverslag het die skrywer die moontlike impak van treitering in die werkplek op die organisasie én die individue wat daaraan onderworpe is, ondersoek. Die skrywer het gebruik gemaak van 'n werklike gevallestudie in Hoofstuk 2 om die teenwoordigheid en die negatiewe impak van werkplektreitering binne die werksomgewing te illustreer. Die skrywer stel sekere strategieë aan slagoffers en werkgewers voor oor die wyse waarop die taktiek van die plaaggeeste herken kan word, hoe om die seerkry te stop en waardigheid, selfagting en selfvertroue terug te bring en voorts hoe om werkplektreitering te ontmoedig en die aftakelende gevolge daarvan te elimineer. Organisasies moet besef dat werkplektreitering 'n weggesteekte bedreiging is wat individue kan vernietig en individuele en spanwerkprestasies kan ondermyn en dat mense nooit op hul beste kan presteer wanneer hulle getreiter word nie. Werkgewers en werknemers het dus 'n wedersydse belang in die uitroeiing van hierdie werkplek demorialiseerder, werkplektreitering. Deur die probleem te ignoreer sal dit nie laat verdwyn nie, maar dit sal stadig maar seker tot organisasies se ondergang lei.
23
Mendoza, Mendoza Alejandro Hernán. "Análisis del paisaje urbano como herramienta de ordenamiento territorial. Caso: Malinalco, Estado de México." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2015. http://hdl.handle.net/20.500.11799/49322.
Abstract:
El tema del paisaje urbano es un tema nuevo en
México debido a la poca mención
del tema en investigaciones realizadas
, como se comentó en el párrafo anterior,
pero en el continente europeo tiene orígenes desd
e el desarrollo científico que se
dio a partir de mediados de siglo XIX en la Europa central
,
el cual contribuyó de
manera importante en la elabor
ación de un concepto de paisaje a partir
la visión
coherente y funcional con que se explica la superficie terr
estre, presentada y
defendida por Alexander Von Humboldt (1999). A nivel mundial el paisaje se
convierte en un objeto de estudio esencial de la geografía desde principios del
siglo XX.
Para el caso de México, a finales del siglo XX el paisaje
urbano se con
vierte para
autores com
o Martínez (1983), Ramos (2000) y
Z
odio (2000),
en
una herramienta
en la ordenación del territorio,
y
aunque no existen programas relacionados con
ma
ntener un paisaje urbano, existe la intención de
mantener o restaurar la imagen
urba
na de los centros históricos y algunos otros como el de “Pueblos Mágicos”
,
h
echo para mantener la belleza de los pueblos en generalSe presenta esta tesis para conseguir la Licenciatura en Planeación Territorial con el tema de “El Paisaje Urbano en el Ordenamiento territorial; Caso de Estudio del Municipio de Malinalco” , mediante el cual se pretende analizar la importancia del paisaje urbano como una herramienta de ordenamiento terri torial, bajo la premisa de que no se considera ninguna de las características del paisaje en el ordenamiento de las ciudades y sin embargo ha y muchas características que permitirían el desarrollo ordenado y un fácil control del futuro crecimiento de la s misma s . El tema de este trabajo de tesis surge a partir de la observación que en l as ciudades del país el tema del paisaje y la importancia de la imagen pasa siempre a segundo término, aun cuando en otros países el considerar este tema en el desarrollo de las ciudades puede dar pauta a futuros ordenamientos de las mismas y a su desarrollo económico de sde un punto de vista del mark etin g de ciudades.
24
Guerrero, De la Torre Nydia Karina. "FORMACIÓN CIUDADANA A TRAVÉS DE LA GESTIÓN DE EDUCACIÓN POPULAR, EN UN CENTRO EDUCATIVO DE NIVEL MEDIO SUPERIOR DESDE LA PERSPECTIVA CRITICO- LIBERADORA." Tesis de Licenciatura, UNIVERSIDAD AUTÓNOMA DEL ESTADO DE MÉXICO, 2014. http://hdl.handle.net/20.500.11799/49422.
Abstract:
Hablar de Gestión de Educación Popular, es hablar de autogestión, y es que a lo largo de la historia principalmente en Latinoamérica, se perciben expresiones en diversos países con distintas características que dan lugar a la lucha popular. La mayoría tiene en común, la exigencia por una sociedad más justa y erradicar la subordinación neoliberal que se ha desarrollado a través de los años, y que cada vez se percibe mayor desigualdad social, menos oportunidades de empleo, mayor contaminación y escases de recursos naturales, compra-venta de territorio y recursos nacionales, entre otros. Lo que ha generado una absoluta violación a los derechos humanos, que afectan principalmente a personas de bajos recursos y un neocolonialismo a los pueblos originarios.
La Educación Popular, se mira entonces como una forma de fomentar y desarrollar habilidades y capacidades humanas para crear mayores herramientas para tratar de evitar una sociedad alienante. Para ello, se requiere de la comprensión de las características de la ciudadana y ciudadano actual, de nuestro contexto inmediato y generar experiencias de trascendencia.
Es por ello que estudiar y participar en proyectos de Educación Popular, puede beneficiar no sólo a los estudiantes que son a quienes va dirigida la práctica pedagógica, sino también al desenvolvimiento profesional y personal de cada docente. Paulo Freire, habla de una educación dialógica y horizontal no autoritaria ni vertical, para desarrollar ciudadanas y ciudadanos con un sentido crítico de su realidad social.El presente trabajo, aborda tres aspectos importantes: Formación ciudadana, Gestión de Educación Popular y el Movimiento Urbano Popular (MUP) en México. Esto para dar un acercamiento teórico de aspectos sociales que influyen en una parte de la población que es: la estudiantil. Es por ello que la Escuela Preparatoria Vladimir Ilich Ulianov Lenin, situada en Toluca, Estado de México, es una expresión dentro de las formas de acción de una organización social que es parte precisamente del MUP.
Universidad Autónoma del Estado de México
25
Sánchez, Aristeo Ángel Samuel. "DESUJETACIÓN EN LA UNIVERSIDAD PÚBLICA." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2015. http://hdl.handle.net/20.500.11799/49922.
Abstract:
En las universidades se observa el apoyo a las teorías “verdaderas”, sin cuestionar la falta de cientificidad o a los intereses a que estas sirven; por otra parte muchas teóricas con rigor científico “ortodoxas” se han vuelto tan herméticas a tal punto que imposibilitan el avance de la comprensión y la transformación de una sociedad mejor.
Es por tal motivo que se debe crear una perspectiva multidisciplinar que amplié sus campos de conocimiento e incluya otras corrientes para abordar los problemas sociales que nos aquejan actualmente, sin dejar de pensar nuestro futuro con proyectos para anticiparlo.A menudo se busca en una sola teoría o postura, el modelo o los conceptos con los que se ha de comprender los fenómenos individuales o sociales de la transformación de las sociedades concretas. Algunas posturas se han desviado de sus objetivos e incluso han sido absorbidas por el sistema, hasta el punto de convertirse en su aliado, tal es el caso de la psicología, la ingeniería, el derecho, etc. (Favor de empezar en la página 10). En las universidades se observa el apoyo a las teorías “verdaderas”, sin cuestionar la falta de cientificidad o a los intereses a que estas sirven; por otra parte muchas teóricas con rigor científico “ortodoxas” se han vuelto tan herméticas a tal punto que imposibilitan el avance de la comprensión y la transformación de una sociedad mejor. Es por tal motivo que se debe crear una perspectiva multidisciplinar que amplié sus campos de conocimiento e incluya otras corrientes para abordar los problemas sociales que nos aquejan actualmente, sin dejar de pensar nuestro futuro con proyectos para anticiparlo. En nuestra investigación partimos de que la realidad que da forma a los instintos del sujeto, así como a sus necesidades y satisfacciones, es un mundo sociohistórico, la base sobre la que se erigió la civilización ha sido la renuncia y el ámbito económico. La represión desde afuera (social) ha sido sostenida por la represión desde adentro (individual), el individuo sin libertad introyecta a sus dominados y sus mandamientos, dentro de su propio Aparato Psíquico.
26
ORTIZ, RAMIREZ LUIS RAUL 400851, and RAMIREZ LUIS RAUL ORTIZ. "El migrante centroamericano irregular de paso por México: Subjetividad y lesiones en contra de su dignidad. Una crítica a la construcción estructurante desde la mirada de Michel Foucault." Tesis de doctorado, Universidad Autónoma del Estado de México, 2015. http://hdl.handle.net/20.500.11799/49222.
Abstract:
La presente investigación es un estudio basado en la subjetividad como corriente teórica, donde se aborda la experiencia del migrante centroamericano irregular de paso por México en lo referente a cómo se lesiona la dignidad de éste a través de los tipos de violencia física, simbólica y estructural. De las experiencias de los migrantes se construye un referente que permitió analizar de manera crítica a la construcción estructurante a través de los conceptos de dispositivo, biopolítica y bipoder del filósofo francés Michel Foucault. Con dichos conceptos se logra explicar cómo es que el Estado mexicano, a través de las acciones y omisiones del Instituto Nacional de Migración busca administrar el fenómeno de la migración irregular, bajo una lógica de contención y mantenimiento del estado de cosas existente, sin considerar las necesidades de los migrantes en tanto que son sujetos. Para la consecución del trabajo se realizó un estudio epistémico-histórico relativo al concepto de dignidad y como se descubrió que no existe una definición del mismo que sea universal, se procedió, después de analizar de forma multidisciplinaria los componentes esenciales de la definición, a la conclusión de proponer un concepto propio de dignidad que pudiera ser constatado en el referente de realidad. Dicho concepto fue aplicado en entrevistas a profundidad que fueron consideradas como el medio idóneo de recolección de información, lo anterior derivado de que el trabajo es de corte cualitativo. El trabajo de campo en comento fue llevado a cabo en el albergue denominado Casa del Migrante, en Huehuetoca, Estado de México.
27
Silva, Rodrigo Sychocki da. "O uso de problemas no ensino e aprendizagem de funções exponenciais e logarítmicas na escola básica." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/49422.
Abstract:
Este trabalho apresenta uma proposta de ensino envolvendo funções, funções exponenciais e funções logarítmicas na escola básica. Através da verificação do processo de aprendizagem de funções pelos alunos, buscamos na teoria dos campos conceituais de Vergnaud e na teoria das representações semióticas de Duval os subsídios necessários para compreender as dificuldades dos alunos e com isso propor uma sequência didática para ser utilizada em sala de aula. A proposta parte da hipótese que a investigação de problemas cotidianos envolvendo o estudo das funções proporciona aos alunos uma melhor compreensão dos conceitos e definições matemáticas envolvidos. Os alunos são confrontados com problemas que permitem o reconhecimento do conceito de função através da relação entre grandezas, da noção de variável dependente e variável independente e a visualização gráfica com a possibilidade da identificação das propriedades de crescimento e decrescimento. As funções exponenciais e logarítmicas são tratadas via problemas em que a aplicação dessas funções é necessária, tais como: crescimento populacional, rendimento de um imóvel, medições das escalas de terremotos, cálculo do pH de soluções químicas, entre outros. A apresentação dos gráficos dessas funções se faz no laboratório de informática, onde os alunos utilizam a tecnologia como recurso para visualizar as características de cada função. Portanto, buscamos com essa sequência didática propor uma alternativa para a abordagem dos conceitos de matemática e através da investigação em grupo possibilitar a aprendizagem de matemática.This paper presents a teaching proposal involving functions, exponential and logarithmic functions at elementary school. Through the verification of the process of learning tasks by the students, we seek in Vergnaud's conceptual fields theory and in Duval’s semiotic representations theory subsidies needed to understand students' difficulties and thus propose a didactic sequence for use in classroom. The proposal starts on the assumption that the research of everyday problems involving the study of functions gives students a better understanding of mathematical concepts and definitions involved. Students are faced with problems that allow the recognition of the function concept through the relation among the quantities, the notion of dependent and independent variable and the graphical display with the possibility of identifying the properties of increase and decrease. The exponential and logarithmic functions are handled through problems where the application of these functions is required, such as population growth, income of a property, measurements of the scales of earthquakes, calculation of the pH of chemical solutions, among others. The presentation of the graphs of these functions is done in the computer lab where students use technology as a resource to display the characteristics of each function. Therefore, we seek with this didactic sequence to propose an alternative to approach math concepts and to enable math learning through this group research.
28
Guimarães, Dirce Maria Fagundes. "Sobre a mediação docente nos primeiros anos do ensino fundamental: um estudo sobre a formação de conceitos em Vygotsky." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2011. http://hdl.handle.net/10183/49722.
Abstract:
Este trabalho trata da mediação simbólica empreendida por professoras, com crianças do segundo ano1 e da quarta série2 de uma escola do Ensino Fundamental. A reflexão dessas práticas é feita à luz de pressupostos teóricos interacionistas. Foram investigadas, nas duas turmas, as formas de apresentação dos conteúdos, as tarefas cooperativas, as representações do objeto de estudo, os conhecimentos trazidos pelos alunos e a socialização do conhecimento. A pesquisa exploratória foi do tipo etnográfico com observação, entrevistas, diário de campo e o registro, num quadro de referências, de indicadores de formação de conceitos científicos, elaborados a partir dos referenciais teóricos de Vygotsky. Dos resultados obtidos, em muitas situações, as aulas observadas obedeceram a uma dinâmica de exposição oral e os conteúdos surgiram de seleção feita pelas professoras a partir de listagem combinada por classes paralelas e livros didáticos. Em outros momentos, foram desenvolvidos projetos que surgiram dos interesses demonstrados pelos alunos e trabalhados em moldes cooperativos, nos quais fizeram explorações concretas dos temas de estudo. Os resultados indicam que quando o grupo trabalhou com os projetos, os resultados foram melhor formalizados em função do tipo de envolvimento dos alunos com o objeto do conhecimento na possibilidade de relações e associações cooperativas. Quando as crianças trabalharam com princípios teóricos formais propostos pelas professoras o caminho para a formação de conceitos e generalizações se expressaram de modo mais restrito. As atividades do grupo que eram originadas em projetos da escola, com temas do cotidiano, e propostas a partir das necessidades e interesses dos alunos, revelaram maior interação e apropriação do conhecimento por parte deles. Os resultados das observações e entrevistas estão analisados principalmente a partir da mediação simbólica de Vygotsky, na qual a linguagem, os signos e símbolos verbais e não verbais compartilhados nas relações sociais medeiam o processo de aquisição de conhecimento. Em Piaget, o enfoque da epistemologia genética, enquanto operacionalidade construtivista, possibilitou a reflexão sobre a interação do sujeito com o grupo e também com o objeto do conhecimento. A presença de Bakhtin, neste trabalho, mostrou uma visão da linguagem, que ultrapassa os códigos linguísticos, pela ideologia presente nos enunciados. Esses autores e suas ideias sobre o aprendizado e o desenvolvimento complementam esse momento de pensar o fazer pedagógico no cotidiano da sala de aula.This study is focused on the symbolic mediation undertaken by teachers in an Elementary School with children aged 7 to 8 and 10 to 16. The reflection of such practices was made in the light of interactionist theoretical assumptions. The content presentation, the cooperative tasks, the representations of the object of study, the knowledge brought by the students and the socialization of knowledge were analyzed in the two classroom groups. It was an ethnographic exploratory research with observations, interviews, field journal, and reports, within a framework of references, on indicators of scientific concept formation based on Vygotsky´s theoretical referential. From the results obtained, in many situations, the lessons observed had an oral presentation dynamics and the teacher’s content selection derived from a list that comprised parallel classes and textbooks. In other occasions, some projects were developed due to the interest demonstrated by the students and worked collectively, with a concrete exploration of the study themes. The results showed that when the group worked with projects, the results were better formalized according to the way the students were involved with the object of knowledge as to the possibility of cooperative associations and relationships. When the children worked with formal theoretical principles proposed by teachers, the way for the formation of concepts and generalizations, they were more intimidated. The group activities developed in school projects, with daily life issues, and proposals from the needs and interests of students, showed that the students had greater interaction and knowledge construction. The results of the observations and interviews were analyzed by considering Vygotsky's symbolic mediation, in which language, verbal and nonverbal signs and symbols shared in social relationships mediate the knowledge construction process. In Piaget, the focus of the genetic epistemology, as a constructivist operation, enabled the reflection on the subject's interaction with the group and also with the object of knowledge. In this study, Bakhtin´s presence provided a vision of language that goes beyond the linguistic codes due to the ideology present in statements. These authors and their ideas on learning and development complement this time of reflecting upon the teaching practice in the everyday classroom.
29
Barbosa, Rafael Freitas. "Análise comparativa de retornos e prêmios de risco entre os níveis de listagem das empresas no mercado de ações brasileiro." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/49822.
Abstract:
A presente investigação científica discorre acerca da análise comparativa dos segmentos Tradicional, Nível 1, Nível 2 e Novo Mercado da bolsa de valores brasileira. As bases do estudo estão calcadas nas relações entre retornos, risco e prêmios de risco em cada segmento. Para o alcance desse objetivo, foram organizadas carteiras teóricas, cada uma composta por ações de empresas listadas nos segmentos citados do mercado à vista. O intervalo de tempo delimitador dos dados amostrais compreende o período de janeiro de 2005 a dezembro de 2010 e possui características cíclicas - típicas desse ambiente de negócios - de crescimento, de queda brusca provocada pelos efeitos da crise de 2008 e de recuperação lenta na valorização dos preços das ações. Isso enriquece as conclusões ao se examinar comparativamente as referidas carteiras teóricas à luz de ciclos distintos do risco sistemático. As conclusões corroboram parcialmente os fundamentos da governança corporativa ao evidenciar que, de todos os portfolios compostos por empresas que adotam as boas práticas de governança, somente o Novo Mercado de fato gera redução das incertezas, acarretando a diminuição do risco e elevados retornos, absolutos e excessivos, relativamente ao portfolio composto por empresas listadas no Tradicional e à média do mercado, a qual é dada pelo Ibovespa. Os níveis 1 e 2, apesar das empresas que os compõem adotarem regras de governança corporativa, não obtêm resultados de acordo com as expectativas geradas justamente por desenvolverem processos de maior transparência e respeito aos acionistas. As evidências apontam que as razões do fato supramencionado residem no estágio inicial de desenvolvimento no qual se encontram o mercado de ações brasileiro e a economia nacional pós-Plano Real, além de haver número reduzido de empresas listadas principalmente nos níveis 1 e 2. Análises futuras poderão estar mais bem alicerçadas a partir da expansão do mercado, a qual ainda é tímida, embora sejam inquestionáveis seus resultados econômico-financeiros na melhoria do bem-estar social.This scientific investigation centers on a comparative analysis of the Traditional, Level 1, Level 2 and Novo Mercado listing segments of the Brazilian stock exchange. The study is based on the relationships among the return, risk and risk premium of each segment. For this, theoretical portfolios were created, with each composed of the stocks of companies listed on these segments in the spot market. The time interval of the sample data consists of the period from January 2005 to December 2010 and features the cyclical characteristics (which are typical in this business environment) of growth, the sharp declines caused by the 2008 crisis and the slow recovery in stock prices, with the comparison of these portfolios in the context of the different cycles of systemic risk enriching the conclusions. The conclusions partially corroborate the fundamentals of corporate governance by demonstrating that of all the portfolios formed by companies that adopt good governance practices, only the Novo Mercado in fact generates a reduction in uncertainties, with lower risks and higher absolute and excessive returns in relation to the portfolio formed by companies listed in the Traditional segment and to the industry average, as indicated by the Ibovespa. Although their component companies adopt more stringent corporate governance rules, the Level 1 and 2 segments have not obtained results that are consistent with the expectations they have generated by their adoption of processes marked by greater transparency and respect for shareholders. The evidence suggests that the reasons for this are the initial stage of development of Brazil’s stock market and the country’s economy following the implementation of the Real Plan, as well as the low number of listed companies in the Level 1 and 2 segments. Future analyses could enjoy more solid support due to the market’s growth, which remains timid. However, the financial results unquestionably contribute to improving the well-being of society.
30
Baer, Janine M. "Changes in bone density in calcium supplemented adolescent female athletes experiencing menstrual dysfunction." Diss., Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/49922.
31
Lim, Kyong Been. "A unified approach to structure and controller design optimizations." Diss., Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/49822.
32
Albert, Frank Curtis. "Applying Source Level Auto-Vectorization to Aparapi Java." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/49022.
Abstract:
Ever since chip manufacturers hit the power wall preventing them from increasing processor clock speed, there has been an increased push towards parallelism for performance improvements. This parallelism comes in the form of both data parallel single instruction multiple data (SIMD) instructions, as well as parallel compute cores in both central processing units (CPUs) and graphics processing units (GPUs). While these hardware enhancements offer potential performance enhancements, programs must be re-written to take advantage of them in order to see any performance improvement
Some lower level languages that compile directly to machine code already take advantage of the data parallel SIMD instructions, but often higher level interpreted languages do not. Java, one of the most popular programming languages in the world, still does not include support for these SIMD instructions. In this thesis, we present a vector library that implements all of the major SIMD instructions in functions that are accessible to Java through JNI function calls. This brings the benefits of general purpose SIMD functionality to Java.
This thesis also works with the data parallel Aparapi Java extension to bring these SIMD performance improvements to programmers who use the extension without any additional effort on their part. Aparapi already provides programmers with an API that allows programmers to declare certain sections of their code parallel. These parallel sections are then run on OpenCL capable hardware with a fallback path in the Java thread pool to ensure code reliability. This work takes advantage of the knowledge of independence of the parallel sections of code to automatically modify the Java thread pool fallback path to include the vectorization library through the use of an auto-vectorization tool created for this work. When the code is not vectorizable the auto-vectorizer tool is still able to offer performance improvements over the default fallback path through an improved looped implementation that executes the same code but with less overhead.
Experiments conducted by this work illustrate that for all 10 benchmarks tested the auto-vectorization tool was able to produce an implementation that was able to beat the default Aparapi fallback path. In addition it was found that this improved fallback path even outperformed the GPU implementation for several of the benchmarks tested.Master of Science
33
Pujolràs, i. Noguer Esther. "An African (Auto)biography: Ama Ata Aidoo's Literary Quest." Doctoral thesis, Universitat Autònoma de Barcelona, 2010. http://hdl.handle.net/10803/4922.
Abstract:
An African (Auto)biography: Ama Ata Aidoo's Literary Quest és un estudi exhaustiu del que considero que configura la primera fase de l'obra d'Ama Ata Aidoo, escriptora ghanesa. El text que marca la primera fase del desenvolupament i consolidació de la veu d'Aidoo és Our Sister Killjoy or Reflections from a Black-eyed Squint, un text inclassificable genèricament i una presència indiscutible en la literatura africana anglòfona. La tasca d'escriure que envolta a escriptors/es es defineix per una necessitat de trobar la seva pròpia veu en el món literari. Si bé aquesta cerca de la veu pròpia ve marcada per un impuls entusiasta per deixar una empremta en el món de les lletres, o si bé està segellada per la càrrega que suposa la superació del que Harold Bloom anomena l' "angoixa de la influència," és a dir, la presència omnipotent de totes aquelles veus d'escriptors/es anteriors que impedeixen l'articulació d'una veu indiscutiblement independent i única, la veritat és que un autor s'ha d'enfrontar i ajustar a una tradició de textos que intenta emmotllar a la seva pròpia imaginació i experiència.
Ama Ata Aidoo és una escriptora africana. Nascuda l'any 1940 a la regió central de Ghana, Aidoo ha conegut el colonialisme de primera mà -Ghana era l'antiga colònia britànica anomenada Gold Coast-, ha estat implicada directament amb la lluita per la independència del seu país -els britànics varen empresonar el seu pare, Abeadzi Kyiakor, per la seva participació en la lluita per la independència de Ghana-, ha disfrutat i celebrat els anys immediatament posteriors a la independència, ha patit i criticat l'onada neocolonialista que seguí el període d' independència i, durant tota la seva vida ha mantingut una perspectiva clarament feminista. La seva cerca literària -la seva lluita per trobar una veu pròpia- és un intent de reconciliar aquells aspectes diferents i discrepants que han configurat la seva experiència com a dona a l'Àfrica. La seva obra literària no es pot entendre sense tenir en compte les realitats sovint ambivalents, ambigües i contradictòries que forgen la seva identitat -la seva (auto)biografia- com a escriptora, dona i africana.
En l' obra d'Ama Ata Aidoo la llegendària lluita entre l'àmbit personal i l'àmbit públic de l'escriptor, entre l'individu com a ésser tancat en sí mateix i ésser polític, s'articula dintre de la realitat sobrecollidora dels estats moderns africans, un llegat que, no es pot oblidar, és patrimoni de l'època colonialista. Quan Harold Bloom mostrava, des d'una perspectiva crítica, la seva preocupació sobre la tradició literària que els escriptors es veuen obligats a confrontar per a poder definir una veu pròpia, singularment seva, ho feia trepitjant terreny occidental, és a dir, ho feia considerant únicament i exclusivament la tradició literària d'occident. Però què passa quan la veu que s'està cercant i intentant definir és el resultat d'una herència polèmica, una herència marcada per una tradició literària occidental, per una banda, i una experiència indiscutiblement i inequívocament africana, per l'altra?
L'any 1994, Vincent Odammten, dedicà un llibre sencer a l'anàlisi de l'obra d'Aidoo: The Art of Ama Ata Aidoo: Polylectics and Reading Against Colonialism. L'anàlisi que Odammten fa de l'obra d'Aidoo es centra en el fet de que els seus textos són un exemple de la lluita literària contra el colonialisme, però, en cap moment, fa referència a la cerca personal de l'autora per definir la seva veu pròpia. El meu argument és que aquesta lluita per definir la seva veu com a escriptora és fonamental per una apreciació crítica de la seva obra, i, afegeixo que aquesta cerca de la veu pròpia està indissolublement lligada a la seva essència com a dona i com a africana.
L'obra d'Ama Ata Aidoo desestabilitza el discurs eurocèntric d'una manera insidiosa, consistent i incansable. El terme "eurocèntric" és un prèstec del llibre de Patricia Hill Collins, Black Feminist Thought, i interpreto "discurs" de la manera que Foucalt ho va definir a The Archaelogy of Knowledge and the Discourse on Language. Així doncs, la meva utilització del terme "discurs eurocèntric" obeeix a, en primer lloc, la interpretació de l'adjectiu "eurocèntric" que trobem en el llibre de Hill Collins i que defineix com a la condensació de dues coordenades: blanca -occidental- i masculina; i, en segon lloc, a la interpretació Foucaldiana de "discurs" com a combinació de pràctica i manera de parlar la naturalesa de la qual determina el criteri pel qual els seus resultats es jutgen com a exitosos. D'aquesta manera, es produeix un cercle viciós, ja que, si masculinitat i occidentalitat són els dos aspectes que alimenten i determinen els criteris mitjançant els quals aquest discurs, aquesta combinació particular i específica de pràctica i manera de parlar, es considera satisfactòria, aleshores, tot sembla indicar que no hi ha cap camí el suficientment satisfactori que ens allunyi de la masculinitat i l' occidentalitat. Mes, com l'obra d'Aidoo demostra, aquest no és el cas.
La literatura africana en llengua anglesa està estigmatitzada pel fantasma de la novel.la de Conrad, Heart of Darkness (Cor de Tenebres). Aquesta novel.la, altament controvertida, publicada l'any 1898, turmenta la imaginació dels escriptors africans per la seva representació del continent africà com a buit negre. Malgrat tot, Heart of Darkness, s'ha de llegir com un text ambivalent, ambigu, terriblement i espantosament contradictori i que s'ha de tenir en compte en qualsevol estudi d'escriptors africans anglòfons que s'emprengui. La meva lectura de la novel.la de Conrad està influenciada per l'obra del crític Edward Said que defineix Heart of Darkness com a una primera i incipient crítica del discurs eurocèntric. Podem afirmar que el motiu que va empènyer a Joseph Conrad a escriure Heart of Darkness va ser el seu desig de plasmar i denunciar l'explotació cruel i brutal que Bèlgica portava a terme en el Congo. Aleshores, i aquí radica l'ambivalència i la importància de l'obra, si aquesta era la intenció de Conrad, com és que Àfrica es descriu com una terra nullius, i els africans es representen com a animals? En altres paraules, perquè la crítica del discurs eurocèntric que sembla desprendre's del text de Conrad cau en el més nefast de l'eurocentrisme: el racisme i el masclisme? Said respón a aquesta pregunta d'una manera parcial: Conrad, mitjançant la seva novel.la, copsa la incapacitat de l'individu que, volent expressar una experiència contrària a l'imperialisme, acaba caient en l'esperit imperialista que vol denunciar i això és degut al fet de que aquesta experiència l'intenta articular mitjançant un discurs eurocèntric, que Said defineix com a marcadament occidental. Com he assenyalat anteriorment, la resposta de Said és parcial perquè, en cap moment, reconeix la masculinitat que desprèn la novel.la de Conrad. Hi ha hagut re-escriptures importantíssimes de Heart of Darkness per part d'autors africans anglòfons -Paradise d'Abdulrazak Gurnah (Zanzíbar), Waiting for the Barbarians de J.M.Coetzee (Sudàfrica), Chinua Achebe, Things Fall Apart (Nigèria)- però cap ha reconegut en la seva re-escriptura crítica la masculinitat que junt amb l'occidentalitat conforma el discurs eurocèntric. Amb una excepció: Ama Ata Aidoo i la seva obra Our Sister Killjoy or Reflections of a Black-Eyed Squint, que suposa una re-escriptura brillant -i, m'agradaria afegir, poc reconeguda- de la novel.la de Conrad.
La meva tesi doctoral consta de dues parts: The Cave: Colonialism Black and White i The Cave Revisited. Towards a Subjectification of Africa and African Women. La primera part la conformen dos capítols: Unveiling the Ghost: Heart of Darkness or Africa-Chronotope Zero i (Auto) Biographical Fiction: The Facing and De-Facing of Africa-. Aquests dos primers capítols són una anàlisi de la ambigüitat del text de Conrad que encara avui dia és una realitat fantasmagòrica en l'imaginari africà anglòfon, per una banda, i una crítica de la masculinitat que amaga el moviment literari de la Négritude que sorgí com un intent per part d'autors africans d' omplir el buit que l'imaginari occidental havia deixat en el continent africà, per l'altra. La segona part se centra en l'estudi de les obres que configuren la primera fase de la cerca literària d'Aidoo -The Dilemma of a Ghost i Anowa (drama), No Sweetness Here (contes) i Our Sister Killjoy or Reflections from a Black-eyed Squint (text genèricament inclassificable)-, uns textos que s'enfronten a un legat literari que nega o, en el millor dels casos, dilueix, la experiència de les dones africanes.
Per demostrar com Ama Ata Aidoo desestabilitza el discurs eurocèntric exposant les seves ambivalències, contradiccions i inconcebibilitats m'emparo en l'obra crítica de Luce Irigaray i, concretament, Speculum of the Other Woman (1974). En aquesta obra, Irigaray desmonta el pensament filosòfic occidental evidenciant la mirada marcadament masculinista que ha interpretat el món i que ha deixat a la dona rellegada a un simple -i sovint molest- apèndix de l'home. L'última part del llibre ( Plato's Hystera) és una anàlisi minuciosa d'un dels fonaments del pensament occidental: la caverna de Plató. La seva lectura deconstruccionista de la caverna de Plató determina la línea argumental de la investigació, dividint la tesi doctoral en les dues parts prèviament definides. Part I. The Cave. Colonialism Black and White i Part II. The Cave Revisited. Towards a Subjectification of Africa and African Women. La crítica que Irigaray fa de la caverna de Plató exposa un camí de pensament linear -marcadament blanc i masculí- que allibera als presoners, sempre i quan aquests siguin homes. Dins del pensament platonià les dones no fugiran de la caverna, el camí linear no funciona per a elles però la realitat de la caverna, i això és el que demostra Irigaray, és més complexa que un simple camí linear; a la caverna hi ha bifurcacions, a la caverna s'hi pot trobar el que ella anomena "el camí oblidat" (the forgotten path) que és el que s'ha de recuperar si volem avançar més enllà del discurs eurocèntric. Irigaray no fa referència d'una manera sistemàtica a la occidentalitat blanca del discurs eurocèntric, sí que ho fa, incansablement, a la masculinitat que es desprén d'ell. L'obra d'Aidoo s'emmotlla perfectament a una crítica basada en el pensament d'Irigaray més, en aquest cas, el discurs eurocèntric que l'autora africana dissecciona desplega la seva masculinitat junt amb la seva occidentalitat blanca. En altres paraules, les dues coordenades que fixen la crítica al discurs eurocèntric en els textos d'Aidoo són el gènere i la raça.
34
Rocha, Melissa Mendes da. "Estudo dos genes AXIN2, BMPR1A e MGMT na susceptibilidade para o desenvolvimento de polipose serreada." Master's thesis, Escola Superior de Saúde Egas Moniz, 2013. http://hdl.handle.net/10400.26/4922.
Abstract:
Dissertação para obtenção do grau de Mestre em Biologia Molecular em SaúdeA polipose serreada (PS) é uma doença rara caracterizada pela presença de pólipos no cólon, com uma histologia serreada (pólipos serreados) e associada a risco aumentado de desenvolvimento de cancro do cólon e recto (CCR). No entanto, as causas moleculares envolvidas na susceptibilidade para esta doença não são ainda conhecidas. Este trabalho teve como objectivo o estudo de genes candidatos para susceptibilidade para a PS – AXIN2, BMPR1A e MGMT, de forma a identificar causas moleculares que possam ser responsáveis por este síndrome. Com o estudo destes genes, pretendeu-se também contribuir para a caracterização das vias de tumorigénese envolvidas no mesmo. Com esta finalidade, foi efectuada a pesquisa de mutações germinais nestes genes em 12 indivíduos com PS. Para o BMPR1A foram ainda analisados 2 indivíduos com polipose juvenil. Foi também realizada a análise de perda de heterozigotia (LOH) do locus do gene MGMT em 47 lesões (pólipos serreados e adenomas tradicionais) de doentes com PS. Foram identificadas 21 mutações germinais: 14 no gene AXIN2, 5 no gene BMPR1A e 2 no gene MGMT. A análise in silico, utilizando os softwares SIFT, Polyphen, Human Splicing Finder, ESE Finder e Variant Effect Predictor (Ensembl), em alguns casos, conjugada com a análise de segregação da mutação com a doença nos familiares, permitiu a identificação de 5 mutações como possivelmente patogénicas: 2 no AXIN2 (c.1889G>A e c.2013_2024del12) e 3 no BMPR1A (c.430+1G>A, c.431-26T>A e c.676-6A>C), duas delas nos dois doentes com polipose juvenil. Foi detectada LOH do MGMT em 13/47 (28%) lesões de PS, sendo que todas apresentavam localização preferencial no cólon proximal/todo o cólon e 9 possuíam também metilação do gene MGMT. Em conclusão, não se pode excluir o envolvimento dos três genes estudados na susceptibilidade para a PS, sendo necessários estudos adicionais para confirmar a patogenicidade das mutações detectadas. Adicionalmente, para além da metilação do gene MGMT, verificou-se que a LOH é também um evento precoce que contribui para a iniciação tumoral no contexto de PS.
35
Chang, Hojoon. "Prediction of Soot Formation in Laminar Opposed Diffusion Flame with Detailed and Reduced Reaction Mechanisms." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/4922.
Abstract:
The present work focuses on a computational study of a simplified soot model to predict soot production and destruction in methane/oxidizer (O2 and N2) and ethylene/air flames using a one-dimensional laminar opposed diffusion flame setup. Two different detailed reaction mechanisms (361 reactions and 61 species for methane/oxidizer flame and 527 reactions and 99 species for ethylene/air flame) are used to validate the simplified soot model in each flame. The effects of strain rate and oxygen content on the soot production and destruction are studied, and the soot related properties such as soot volume fraction, particle number density and particle diameter are compared with published results. The results show reasonable agreement with data and that the soot volume fraction decreases with higher strain rate and lower oxygen content. The simplified soot model has also been used with two reduced reaction mechanisms (12-step, 16-species for methane flame
and 20-species for ethylene flame) since such reduced mechanisms are computationally more efficient for practical application. The profiles of the physical properties and the major species are in excellent agreement with the results using the detailed reaction mechanisms. However, minor hydrocarbon-species such as acetylene (C2H2) that is the primary pyrolysis species in the simplified soot model is significantly over predicted and this, in turn, results in an over-prediction of soot production. Finally, the reduced reaction mechanism is modified to get more accurate prediction of the minor hydrocarbon-species. The modified reduced reaction mechanism shows that the soot prediction can be improved by improving the predictions of the key minor species.
36
斉藤, 真子. "2.「黒い雨」の指導について(国語科)(教科研究)." 名古屋大学教育学部附属中学校 : 名古屋大学教育学部附属高等学校, 1991. http://hdl.handle.net/2237/4922.
37
Sze, Chin Ngai. "Algorithms for the scaling toward nanometer VLSI physical synthesis." Texas A&M University, 2005. http://hdl.handle.net/1969.1/4922.
Abstract:
Along the history of Very Large Scale Integration (VLSI), we have successfully scaled
down the size of transistors, scaled up the speed of integrated circuits (IC) and the number
of transistors in a chip - these are just a few examples of our achievement in VLSI scaling.
It is projected to enter the nanometer (timing estimation and buffer planning for global routing and other early stages such
as floorplanning. A novel path based buffer insertion scheme is also included, which
can overcome the weakness of the net based approaches. Part-2 Circuit clustering techniques with the application in Field-Programmable
Gate Array (FPGA) technology mapping
The problem of timing driven n-way circuit partitioning with application to FPGA
technology mapping is studied and a hierarchical clustering approach is presented for the latest multi-level FPGA architectures. Moreover, a more general delay model is included in order to accurately characterize the delay behavior of the clusters and circuit elements.
38
Liu, Marie-Odile. "La problématique du sujet dans quelques oeuvres romanesques québécoises contemporaines." Thesis, University of Ottawa (Canada), 1985. http://hdl.handle.net/10393/4922.
39
MacGregor, Paula. "Assessing stumpy formation and stumpy-specific gene expression in Trypanosoma brucei." Thesis, University of Edinburgh, 2011. http://hdl.handle.net/1842/4922.
Abstract:
During the bloodstream stage of the Trypanosoma brucei lifecycle, the parasite exists in two different states: the proliferative slender form and the non-proliferative, transmissible, stumpy form. The transition from the slender to stumpy form is stimulated by a density-dependent mechanism and is important in infection dynamics, ordered antigenic variation and disease transmissibility. The slender to stumpy transition and the contribution of stumpy formation to within-host dynamics have been difficult to analyse, however, because cell-type specific markers have been restricted to imprecise morphological criteria. PAD1 is a recently identified stumpy-specific protein which acts as a molecular marker for stumpy formation and a functional marker for transmission. Here, the control of stumpy-specific gene expression via the 3’UTR has been analysed, identifying that there are repressive elements in the 3’UTR preventing inappropriate expression during the slender life stage. Further, both pleomorphic and monomorphic transgenic reporter cell lines utilising the PAD1 3’UTR have been created that report on stumpy formation in vitro and these have been used for the analysis of stumpyinducing chemical compounds. Finally, a sensitive and accurate qRT-PCR assay has been developed and optimised that faithfully reports both parasitaemia and stumpy formation throughout host infection. Using a chronic infection rodent model, stumpy levels have been monitored on the basis of conventional morphological and cell cycle assays, as well as by qRT-PCR for PAD1 expression. The results define the temporal order of events that result in the generation of stumpy forms early in a parasite infection and thereafter describe the dynamics of slender and stumpy forms in chronic infections extending over several weeks. This quantitative data has allowed the mathematical modelling of transmission competence in trypanosome infections, suggesting dominance of transmission stages throughout infection.
40
Myers, Catherine. "Constructing a Healthcare Assets Map in Rural Appalachia: An Analysis of Healthcare Services and Perceived Health Threats." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4922.
Abstract:
Using data gathered over the course of two months through participant observation and semi-structured interviews with health providers (n=19) and community members (n=20), this research analyzes patient access to health care resources and describes community members' and health care providers' perceptions of pressing health concerns in their area. The results of this research show the types of health care resources in the county, the similarities and differences between health providers' and community members' perceptions, and how the unique characteristics of this community influence health care access and health disparity.
41
Erasmus, Bettie van der Walt. "Evaluation and comparison of the physical properties and drug release characteristics of directly compressible lactose–based filler/binders / Bettie van der Walt Erasmus (Alta)." Thesis, North-West University, 2010. http://hdl.handle.net/10394/4922.
Abstract:
Direct compression has gained significant interest since its advent in the late 1950's due to its potential ease compared to wet granulation. The primary prerequisites for powders used in direct compression are (i) good flow properties (ii) good compressibility and (iii) an acceptable dilution potential to accommodate a relative high percentage of active ingredient. Several filler/binders have been manufactured especially for direct compression and co–processing is one of the recent methods used to produce good compressible excipients with acceptable flow properties. In this study, lactose–based filler/binders were used which included simple and modified lactose materials (Granulac, Lactopress, Flowlac and Tablettose) as well as co–processed excipients (Starlac, Cellactose and Microcelac).
A comprehensive literature study on direct compression revealed the importance of the physical properties of filler/binders such as interparticle forces, particle shape, particle size and distribution, powder density, particle surface structure and particle packing geometry which influence the flow of powders. All the materials were subjected to the various tests available to evaluate powder flow, namely (i) angle of repose (AoR), (ii) critical orifice diameter (COD), (iii) flow rate and percentage compressibility (%C) in terms of the powders' bulk and tap densities. The results of these tests confirmed the expected flow properties of the various filler/binders, with only one material exhibiting extremely poor flow properties. The following rank order in terms of all flow tests conducted was established; Starlac >> Microcelac ~ Flowlac >> Cellactose > Tablettose > Lactopress >>> Granulac. The co–processed filler/binders presented with superior flow compared to the other lactose–based materials.
During the next phase of the study, the compaction properties of the various fillers were evaluated, employing direct compression. Compacts of pure filler were tabletted on an eccentric tablet press at different compression pressures (manipulated by the upper punch setting of the tablet press). The modified lactose filler/binders (Lactopress, Flowlac and Tablettose) exhibited unexpectedly poor compression profiles, where the co–processed filler/binders (Starlac, Cellactose and Microcelac) produced compacts with acceptable appearance and compact properties. Two lubricants (Mg–St or Pruv), which were tested separately in formulations were added since no compacts could be produced from the pure filler/binders. None of the modified lactose filler/binders, in combination with a lubricant, were able to produce an acceptable compact, since lamination occurred during compression. The co–processed filler/binders produced satisfactory compacts with the addition of a lubricant, but lactose–cellulose fillers (Cellactose and Microcelac) also required the inclusion of a disintegrant (Ac–Di–Sol) to induce satisfactory compact disintegration.
Poor compressible active ingredients (paracetamol), which exhibit very poor flow properties, are usually difficult to use during direct compression. Many excipients (tested in this study) are formulated to accommodate these drugs and produce acceptable functional tablets. After identifying the best filler/binders (co–processed fillers), according to their flow and compressible properties, paracetamol was added to the formulations. During a pilot study, the percentage paracetamol these fillers could accommodate in a 400 mg tablet was determined. Both Microcelac and Cellactose could accommodate 24.5% w/w paracetamol, whilst Starlac could only accommodated 19.5% w/w. Paracetamol is well known for its tendency to cause tablet capping and lamination. An acceptable upper punch setting range (20–22) was chosen for tabletting, followed by quality control tests done. All three formulations produced suitable tablets for testing and exhibited good tablet properties. All tablets disintegrated within two minutes, with hardness profiles between 120 N and 148 N and friability percentages less than 1%.
Dissolution studies, however, are probably the ultimate test to distinguish between the capability of filler/binders to release the optimum percentage drug after disintegration. Dissolution studies were done on all three formulations using the AUC (area under the curve) and IDR (initial drug release) as parameters to evaluate drug release. All tablets exhibited high initial dissolution rates (between 0.018 - 0.023 mg/min/ml) and 100% drug release was observed. Starlac presented with a lower amount of drug released compared to the other two, but can be explained by the lower percentage (19.5%) paracetamol present in the formulation.
It was once again confirmed that the physical and compressible properties of potential directly compressible filler/binders play a major role in direct compression. It was concluded that co–processed filler/binders (Starlac, Microcelac and Cellactose) definitely exhibited better tabletting properties during direct compression. They were able to accommodate a certain percentage of paracetamol, although it was expected that they would accommodate a higher amount (at least 50% of total tablet weight).Thesis (M.Sc. (Pharmaceutics))--North-West University, Potchefstroom Campus, 2011.
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Lopes, Sergio Francisco Sargo Ferreira. "O uso das tecnologias da informação e comunicação no Ensino Superior: os impactos nos processos de ensino-aprendizagem." Master's thesis, [s.n.], 2015. http://hdl.handle.net/10284/4922.
Abstract:
Dissertação apresentada à Universidade Fernando Pessoa como parte dos requisitos para a obtenção do grau de Mestre em Docência e Gestão da EducaçãoAs Tecnologias da Informação e Comunicação (TIC) estão profundamente relacionadas com a maioria das atividades humanas, seja no meio profissional ou acadêmico, as TIC trazem como ferramenta, enormes vantagens, e otimizam as atividades diárias de maneira muito eficiente se empregadas adequadamente. É tal a importância das TIC na sociedade atual e no meio acadêmico, que essas vêm sendo amplamente estudadas e analisadas por pesquisadores universitários de diversas áreas acadêmicas, em função das transformações que as TIC causam nas atividades profissionais no interior das indústrias, e principalmente na Educação. No contexto da Educação, principalmente no ensino superior, a utilização das TIC está profundamente disseminada, sejam nos recursos tecnológicos utilizados no ensino presencial, como nos utilizados na Educação a Distância (EaD), tendo este último crescido exponencialmente nos últimos anos, principalmente na oferta de cursos de graduação e pós-graduação das Instituições de Ensino Superior (IES) do Brasil. Na atualidade observamos uma enorme variedade de recursos disponibilizados pelas TIC, oferecidos aos professores e alunos, o que vem notadamente exigindo uma rápida adaptabilidade por parte de ambos, obrigando-os de certa forma, a se ajustar em suas atividades pedagógicas, principalmente nos processos de ensino-aprendizagem. O mundo tecnológico atual exige muito dos professores, exigindo um constante aperfeiçoamento profissional frente às novas tecnologias, destacadamente as computacionais, conhecimentos esses que vão muito além de suas áreas de formação, colocando os professores numa situação de aprender e reaprender constantes. Dentro desse contexto, o presente trabalho tem por finalidade realizar um estudo de caso no Centro de Educação Técnica e Tecnológica Álvares de Azevedo (CETTAA), mantenedora de diversas faculdades do estado de São Paulo, Brasil, junto aos professores das diversas áreas de conhecimento, investigando como esses estão se adaptando com a constante evolução das TIC, e quais os impactos positivos e/ou negativos que as TIC vem causando nos processos e metodologias de ensino-aprendizagem utilizados no ensino presencial e no ensino-à-distância (EaD). The Information and Comunication Technology (ICT) is deeply related to most human activities. Either at the professional or at the academic world, ICT, as a tool, provides huge advantages, and, if properly used, those tools optimize our daily activities in a very special way. The importance of ICT is so high nowadays both in society and in the academic environment that it has been studied and analysed by university researchers from various academic areas, and that happens due to the transformations ICT brings to the professional activities inside the taken industries, and mainly in the Educational sector. Considering the Educational sector, mainly at the highest levels, ICT’s use is highly disseminated both when needed for developping the technological resources used during the classes taken and during the distance learning. This last way of teaching has become extremely more frequent lately mainly considering the offer of graduation and post graduation courses at the Institutions of Superior Courses (IES) in Brazil. We notice, nowadays, that a great variety of resources has been offered by ICT to teachers and students and that this has demanded a quick adaptability of both groups. Due to this fact, they are somehow obliged to adjust their pedagogical activities, mainly on teaching-learning processes. At this moment in history, the technological world demands a lot from teachers and a constant knowledge increasing regarding the new acquisitions in the different áreas of studies, leads teachers to a situation of constant learning and perfecting knowledge on different areas. This goes, then, beyond their specific áreas of studies. Considering this context, this piece of work has the purpose of making a subject study at the Centro de Educação Técnica e Tecnológica Álvares Penteado (CETTAA), which maintains several colleges in the State of São Paulo, Brazil, with teachers in different areas of knowledge. It will investigate how they are adapting to the constant evolution of TIC and the positive and/or negative impact the ICT’s have been causing on the processes and the methodologies of teaching-learning used on the premises and distance learning.
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Paninho, Ana Inês Brandão. "Análise da concentração de chumbo em sangue de ratos Wistar sujeitos a uma exposição continuada." Master's thesis, Faculdade de Ciências e Tecnologia, 2010. http://hdl.handle.net/10362/4922.
Abstract:
Dissertação apresentada na faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para obtenção do grau de Mestre em Engenharia BiomédicaO chumbo é um dos elementos traço com maior impacto e maior risco para a saúde pública, sendo, provavelmente, o analito mais estudado em amostras biológicas. As técnicas mais utilizadas na análise da concentração de chumbo no sangue são: espectrometria de massa com plasma indutivamente acoplado (ICP‐MS), espectrometria de emissão óptica com plasma indutivamente acoplado (ICP‐OES), espectrometria de absorção atómica com chama (FASS), com geração de hidretos (HGAAS) e electrotérmica (ETAAS). Neste trabalho, foi escolhida a técnica de análise ETAAS pelas vantagens que apresenta em relação às outras técnicas. Relativamente ao tratamento das amostras, foi efectuada a digestão ácida assistida por microondas e a extracção assistida por ultra‐sons. Este trabalho integra um estudo geral da toxicocinética do chumbo num conjunto de ratos Wistar, sendo um dos principais objectivos deste trabalho desenvolver uma ferramenta de detecção de chumbo “in vivo” de fácil uso médico e não invasiva. Foram estudados dois conjuntos de ratos Wistar: um conjunto alimentado com uma dieta rica em chumbo desde o período fetal e um outro conjunto de controlo alimentado com uma dieta normal. O regime de exposição ao chumbo foi baseado num procedimento validado por Bielaczyk et al. [1]. As amostras de sangue dos ratos de controlo, não apresentaram quantidades significativas de chumbo. Em relação as amostras de sangue de ratos contaminados com chumbo, mediu‐se quantidades significativas de chumbo, as quais diminuem com a idade dos ratos.
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Cáceres, Azaña Carlos Franklin, and Vivas Yovana Isabel Torpoco. "Farmacovigilancia intensiva durante la administración por perfusión de un producto biológico no comparable Rituximab, en el Hospital Nacional Edgardo Rebagliati Martins." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2016. https://hdl.handle.net/20.500.12672/4922.
Abstract:
Desarrolla un estudio de farmacovigilancia intensiva de Rituximab, un producto biológico no comparable, para detectar reacciones adversas durante la administración por perfusión a los pacientes del HNERM. Utiliza una muestra de 181 pacientes; 106 varones (58,6%), 75 mujeres (41,4%) la mayoría en la séptima década de vida (33,7%) tratados tanto por quimioterapia ambulatoria como por hospitalización; los que a su vez se clasificaron por servicios en dos grupos de acuerdo a las características del tratamiento: Oncología–Hematología y Reumatología–Dermatología. Para la evaluación de pacientes que presentan reacciones adversas se constituyen dos grupos: iniciadores y continuadores, de este modo se relaciona la aparición de una reacción adversa con la velocidad de perfusión. En el análisis de las reacciones adversas relacionadas a la perfusión se usa herramientas como el Common Terminology Criteria for Adverse Events 4.03 (CTCAE) y el algoritmo de causalidad de Karch y Lasagna modificado por Naranjo, utilizado en el Sistema Peruano de Farmacovigilancia. Obtiene los siguientes resultados: Del total de pacientes, 47 (23,06%) presentan 72 reacciones adversas relacionadas a la perfusión (RRP). El 82,9% es de los servicios de Oncología-Hematología y 17,1% de Reumatología-Dermatología. Los pacientes iniciadores abarcan 28,7% y los continuadores 71,3%. De los iniciadores, 42,3% presenta al menos una reacción adversa que aparecieron con más frecuencia dentro de los 30 minutos de iniciada la perfusión (50-100 mg/h). De los continuadores, 19.4% presenta al menos una reacción adversa; pero es frecuente en dos intervalos: dentro de los 30 minutos de iniciado el tratamiento (50-100 mg/h) y entre los 30-60 minutos de iniciada la perfusión (≥301 mg/h). El tiempo total de perfusión en los iniciadores es en promedio 4 horas y en continuadores 2,9 horas. Según el CTCAE, las reacciones adversas relacionadas a la perfusión de mayor frecuencia son prurito (15,3%), escalofríos (8,3%) y mareos (6,9%); en su mayoría clasificadas como desórdenes del tejido epitelial subcutáneo (23,6%) y desórdenes generales relacionados con la administración (22,2%). Según su gravedad, la mayoría de las reacciones son leves (79,2%) y de acuerdo al algoritmo de causalidad, probables (76,4%). No se observan RRP de nivel potencialmente mortal ni muertes.Tesis
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Grendene, Fernanda. "O adoecimento do corpo: os psicodinamismos de portadores de diabetes mellitus através do Rorschach." Pontifícia Universidade Católica do Rio Grande do Sul, 2007. http://hdl.handle.net/10923/4922.
Abstract:
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Previous issue date: 2007This Master’s dissertation consists of two studies under the norms of the Psychology Post-Graduation Program of PUCRS. In the first one, is a review of literature on both the physical chronic disease and the Rorschach Method, with particular emphasis to diabetes mellitus (DM). Lilacs, PsYcinfo Scielo, Pepsic, Indexpsi were used as data bases, as well as web search tools, such as Google and Yahoo. There was a search for articles that contain the Rorschach method as their main tool of assessment of the psychological and personality aspects of those persons who have had the chronic disease for the last ten years. The key words used in the initial search were Rorschach and chronic disease, Rorschach and disease, chronic disease and psychological assessment, from 1997 to 2007. For the specific focus on DM and Rorschach a search was performed in the same databases; however the specific Rorschach and diabetes mellitus key words, as well as the search in the journals in the libraries of the Institute of Psychology and the College of Medicine of UFRGS, and the Central Library of PUCRS, not available on-line. It was demonstrated that there has been a shortage of articles on this theme in the past ten years. It was also identified that studies with persons who have chronicle diseases show feelings of grief, distress, lack of will power, desmotivation, nervousness, annoyance, displeasure, insecurity, sensation of inutility and dissatisfaction with one’s self-image, social isolation, the increase of depression, the decrease in the improvement expectations, and loneliness feelings. About DM, feelings that are prevailing seem to be the same as those of other chronic diseases, depending on their level, control and complications. Specific literature says that Rorschach method is a sensitive technique to detect emotional aspects that encompasses the physical chronic disease. Nevertheless, in the past years just a few twin studies have been found about both themes. The second study deals with the main changes in everyday life of DM patients after diagnosis, as well as the difficulties in controlling the disease. It also checks out and analyzes the psychodynamics processes found in the Rorschach verbalization protocols of 25 diabetic persons, by means of Content Analysis method, proposed by Bardin. (1977). The results show that the study group can be characterized as a group of predominantly Alexitimic persons. It especially occurs when concepts of the Psychoanalytic Psychosomatic, are considered; these persons use special defensive mechanisms against emotional suffering from having a chronic disease. Furthermore, the group can be described as being composed of persons with difficulties to symbolize, maintaining concrete perceptions of reality; they also present emotional impairs due to their sickness process, principally if it is considered the interpersonal relationships, and their difficulty of express emotions and affection.
A presente dissertação de Mestrado é composta por dois estudos, seguindo as normas do programa de Pós-Graduação em psicologia da PUCRS. No primeiro estudo foi realizada uma revisão de literatura sobre doenças crônicas físicas e o método Rorschach, dando ênfase nos estudos com diabetes mellitus (DM). Para sua composição foram pesquisados nas bases de dados Lilacs, Psycinfo Scielo, Pepsic, Indexpsi e ferramentas de busca da Web (Google e Yahoo) artigos que contenham o método Rorschach como principal instrumento de avaliação dos aspectos psicológicos e de personalidade de pessoas portadoras de doenças crônicas, nos últimos dez anos. Os descritores utilizados na busca inicial foram Rorschach e doença crônica, Rorschach e doença, doença crônica e avaliação psicológica, no intervalo dos anos de 1997 a 2007. Para o item específico sobre DM e Rorschach foi realizada uma nova busca nas mesmas bases, porém, com os descritores específicos Rorschach e diabetes mellitus e uma busca em periódicos nas bibliotecas do Instituto de Psicologia e da Faculdade de Medicina da UFRGS, e da Biblioteca Central da PUCRS, não disponíveis virtualmente. Constatou-se um número escasso de artigos com essa temática específica no período dos últimos 10 anos. Também foi verificado que os estudos com pessoas portadoras de doenças crônicas apontam sentimentos de tristeza, desânimo, falta de vontade, desmotivação, nervosismo, aborrecimento, perda de prazer, insegurança, sensação de inutilidade e insatisfação com a auto-imagem, isolamento social, aumento da depressão, diminuição das expectativas de melhora e sentimentos de solidão. Com relação ao DM, os sentimentos que prevalecem parecem ser os mesmos que em outras doenças crônicas dependendo do grau, do controle e das complicações da mesma.A literatura aponta que o método Rorschach é uma técnica sensível para detectar os aspectos emocionais que envolvem a doença crônica física, porém nos últimos anos não foram encontrados muitos estudos que abarquem as duas temáticas juntas. O segundo estudo trata das principais mudanças no cotidiano de portadores de DM após o diagnóstico, das dificuldades em controlar a doença e verifica e analisa psicodinamismos encontrados nas verbalizações ao Rorschach de 25 pessoas diabéticas, por meio da Análise de Conteúdo de Bardin. Os resultados apontam que o grupo em estudo caracteriza-se como composto por pessoas predominantemente Alexitímicas, partindo dos pressupostos da Psicossomática Psicanalítica; essas pessoas utilizam mecanismos de defesa específicos contra a dor emocional de portar uma doença crônica; apresentam dificuldade de simbolização, mantendo percepções concretas da realidade. Além disso, indicam prejuízos emocionais envolvidos no processo de adoecimento, no que diz respeito principalmente às relações interpessoais e à dificuldade de expressar emoções e afetos.
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Rassier, Leandro Hirt. "Análise de retorno dos fundos de renda fixa brasileiros através de indicadores de mercado." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2004. http://hdl.handle.net/10183/4922.
Abstract:
Este trabalho estuda o comportamento do retorno dos fundos de Investimento de Renda Fixa no Brasil a partir de um modelo baseado na hipótese de que os fundos de Investimento Financeiro (FIF’s) e os Fundos de Aplicação em Cotas de FIF’s (FAC’s) estão diretamente ligados às seguintes variáveis: i) Bolsa (IBOVESPA), ii) Taxa de Juros (CDI) e iii) Câmbio (Dólar). No presente estudo, são investigados basicamente dois aspectos: a) a existência de uma relação entre a variação dos indicadores financeiros e a variação do retorno dos fundos e b) a alteração dos fatores explicativos do retorno dos fundos ao longo dos meses. Os resultados obtidos mostram que a grande maioria dos fundos obteve os retornos explicados por um, dois ou três benchmarks; logo, é possível interpretar a categoria de ativos de um fundo como exposição do desempenho de seu benchmark. No entanto, foi constatado que a escolha do benchmark mais adequado para um fundo de investimento depende do conhecimento da composição da carteira desse fundo. Assim, através de uma análise criteriosa dessas informações, o investidor deve estar convicto de que a política de investimentos de um determinado fundo o enquadra em uma determinada categoria. Além disso, ele deve ter a segurança necessária e suficiente de estar classificando seu(s) fundo(s) na categoria certa, e por via de conseqüência, comparar sua performance com base em seu risco associado, de forma justa e compatível com seu semelhante.
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Preston, Bradley. "Pricing equity options on multiple underlyings in the South African context." Master's thesis, University of Cape Town, 2008. http://hdl.handle.net/11427/4922.
Abstract:
Includes abstract.Includes bibliographical references (leaves 81-83).
It is well documented that financial asset prices returns are not normally distributed. Historical return distributions exhibit fatter tails and positive skewness that is not explained by a normal distribution. Moreover, the standard Black-Scholes option pricing framework that assumes that asset prices follow geometric Brownian Motion does not explain option prices observed in the market. In particular much work has been done trying to explain the volatility skew.
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SUZART, ARGOLO ISABEL CATARINA. "La estética vestimentar contemporánea de calle de la ciudad de Salvador, Bahía, producto de creación plástica, expresión de identidad personal y agente socializador." Doctoral thesis, Universitat Politècnica de València, 2009. http://hdl.handle.net/10251/4922.
Abstract:
Este estudio analiza las articulaciones que la cosmética, en su expresión indumentar, es capaz de promover en la vida cotidiana, mostrando su eficacia en la interacción con los individuos, informando además, sobre su gusto, percepción, valoración estética y mayor o menor predisposición para comunicarse a partir de estos datos. Nuestro principal foco de interés, la estética vestimentar de calle -nombramiento que le fue conferido para diferenciarla de la indumentaria convencional cotidiana -, es analizada como un producto cultural, un medio de expresión de una imagen personal que, en sus manifestaciones por el espacio urbano, estimula la práctica de la alteridad. Es decir que, 'la estética en cuestión' es un importante factor de socialización en los ambientes por donde circula, considerando en esta conducta, la tendencia inmanente de los individuos para seducir y dejarse atraer por lo diferente, en un permanente intercambio simbólico. Observamos las influencias, mecanismos y propósitos que subyacen en la elaboración de esta identidad indumentar, suponiendo ser ella un ethos forjado por elementos de la cultura no material, a través de sus valores, costumbres, ideologías y prácticas simbólicas. Es puesto en debate la vinculación entre ética y estética, revelando la importancia de la experiencia estética en lo cotidiano, como una praxis efectiva en el desbloqueo de los canales perceptivos y en la ruptura de conductas maquinales, cristalizadas por el tiempo.Suzart Argolo, IC. (2009). La estética vestimentar contemporánea de calle de la ciudad de Salvador, Bahía, producto de creación plástica, expresión de identidad personal y agente socializador [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/4922
Palancia
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Ferreira, João Carlos Teles. "A Loja do Cidadão de Aveiro no contexto da nova prestação de serviço público." Master's thesis, Universidade de Aveiro, 2006. http://hdl.handle.net/10773/4922.
Abstract:
Mestrado em Gestão PúblicaPretende-se, com esta dissertação proporcionar uma maior compreensão do projecto Lojas do Cidadão, focando em particular a Loja do Cidadão de Aveiro, o qual trouxe para o sector público um novo conceito de prestação de serviço, mais moderno e transparente, assente no objectivo de proporcionar ao cidadão um atendimento mais célere, cómodo e eficiente. Tendo como modelo o projecto brasileiro do SAC- Serviço de Atendimento ao Cidadão, baseado numa gestão de atendimento integrado, as Lojas do Cidadão fundamentam-se no propósito de centralizar, no mesmo local, diversas representações de organismos públicos e privados, em condições de comodidade e conforto, e funcionando em horário contínuo e alargado. Os resultados dos inquéritos efectuados aos utentes e funcionários da Loja do Cidadão de Aveiro proporcionam uma clara imagem de satisfação pela qualidade dos serviços nela prestados, mas também indiciam algumas preocupações para a sua melhoria.
With this essay we intend to give a more thorough understanding of the project Citizens Shop, focusing in particular on the Aveiro Citizen Shop, which brought to the public sector a new concept of service provider, more modern and transparent, with the goal to offer the citizen a faster, commodious and more efficient service. Having as a model the brazilian project SAC – Serviço de Atendimento ao Cidadão, which based in a inter-organizational management, the Citizens Shop thrive on the idea of having, in one location, several representations of public and private entities, in comfort and convenience, with an extended and continuous schedule. The results of the inquiries done to the users and employees of the Aveiro Citizen Shop, show an image of satisfaction for the quality of the services rendered, but also denote some concerns for its improvement.
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Brocka, Christopher G. "Laramide stress conditions and deformation mechanisms during the formation of Derby and Dallas Domes, Weiser Pass Quadrangle, Wind River Mountains, Wyoming." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/4922.
Abstract:
Thesis (M.S.)--University of Missouri-Columbia, 2007.The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on April 15, 2009) Includes bibliographical references.