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1
Pötzelberger, Klaus. "The Consistency ot the Empirical Quantization Error". Department of Statistics and Mathematics, WU Vienna University of Economics and Business, 1999. http://epub.wu.ac.at/1790/1/document.pdf.
Abstract (sommario):
We study the empirical quantization error in case the number of prototypes increases with the size of the sample. We present a proof of the consistency of the empirical quantization error and of corresponding estimators of the quantization dimensions of distributions. (author's abstract)Series: Forschungsberichte / Institut für Statistik
2
Conyon, Martin J. "Monopoly capitalism, profits, income distribution and unionism". Thesis, University of Warwick, 1991. http://wrap.warwick.ac.uk/60315/.
Abstract (sommario):
This thesis aims to extend our understanding of the contemporary stage of monopoly capitalism by considering the issue of profits, income distribution and trade unionism. By focusing on the effect of trade unions on key economic indicators we hope to demonstrate the key importance of both trade unions and market structure in shaping the industrial economic landscape. Using national accounts and census of production data we find that there is a secular tendency for the degree of monopoly to rise although we find little evidence to suggests a similar decline in the profit rate. It also emerges that unions cannot easily influence factor shares. We go on to make the case for a fundamental reappraisal of the role of labour within the firm. We then provide an assessment of the effect of unions within oligopoly. Using firm level data we illustrate that there is a significant degree of apparent collusion within oligopoly and that this is influenced by product market structure and trade unionism. We consider the effects of both structure and unionism in shaping industry profits. We find that for the mid-1980's unions depress mark-ups whilst increasing concentration impacts positively on the margin. We further show that the effect of concentration in successively related industry adds to the seller margin and does not reflect countervailing power. We also find evidence that union coverage in downstream industries adversely affects the seller margin in 1984-85. Finally, we consider the role of trade union power in shaping factor distribution in the manufacturing sector. We find that unions cannot easily influence the distribution of income but that seller concentration significantly depresses wage share. These results are of considerable interest and attest to the importance of considering both product and labour market interaction in shaping key economic variables.
3
Wahra, Assma. "Measurement of III-V quantum dot composition in three dimensions using transmission electron microscopy". Thesis, University of Warwick, 2013. http://wrap.warwick.ac.uk/60415/.
Abstract (sommario):
Three-dimensional compositional models of individual InAs/GaAs quantum dots (QDs) have been generated using compositionally-sensitive dark field 002 cross sectional transmission electron microscope (TEM) images. Recovery of a sample's structure from transmission electron microscope image data is an inverse problem, which is solved here by the use of simplifying assumptions. The reconstruction of the 3-D concentration is made possible using image analysis and fitting of the image data with a series of Gaussian functions, under an assumption of cylindrical symmetry. A further complication in the analysis is the existence of double-valued solutions for the composition, which required further information in order to find the right solution. For high quality TEM specimens the model can determine the location and concentration of indium and gallium in different regions inside QDs and reveals differences in composition between samples, for example due to differing thermal treatments. Knowledge of the TEM specimen thickness is essential for quantitative analysis, as shown by comparison between simulated and experimental images. A new technique for measurement of specimen thickness using convergent beam electron diffraction techniques, to a small fraction of the extinction distance, is made possible using digital combination of several individual diffraction patterns. Our measurements of composition give insight into the growth process, as well as quantitative measurements which can be used for modelling of QD behaviour. The model is applied to different InxGa1-xAs QD structures, i.e. an InAs QD laser, D-WELL structure, QD infrared photodetector and double QD structure. The thesis starts with an introduction in an epitaxial growth of III-V quantum dots, some of their applications and currently available 3D characterization techniques. Chapter 2 presents a general introduction to transmission electron microscopy, sample preparation and contrast mechanisms with particular attention paid to dark field 002 imaging of III-V quantum dots. The principles used throughout the analysis, and the approach taken to implement them, are given in chapter3. It presents basic concepts, data processing algorithms and experimental imaging conditions. A data processing program, taking experimental transmission electron microscope images of QDs to produce a 3-D composition model; and an image simulation program, using dynamical diffraction theory to produce a TEM image from a 3-D composition model, were written using MatLab. Chapter 4 focuses mainly on the measurement of specimen thickness including digital large angle convergent beam electron diffraction (D-LACBED) and the 113-DF imaging technique. Experimental results are given in chapter 5. Chapter 6 is given to discussion and some conclusions and suggestions for further work given in chapter 7.
4
Onions, Tiffany. "Validation and use of a model system to investigate topical treatment of vulval intraepithelial neoplasia". Thesis, Cardiff University, 2013. http://orca.cf.ac.uk/60915/.
Abstract (sommario):
The aims of this study were to develop novel in vitro models of Human Papillomavirus (HPV) -associated vulval and vaginal neoplasia and to use them to investigate the mechanism(s) of action of the nucleoside analogue, Cidofovir (CDV), for which a mechanism is unknown. Single cell clones were successfully isolated from heterogeneous vulval and vaginal parental populations. The clonal cell lines were characterised morphologically and in terms of cell proliferation; a range of growth rate and morphological variants were identified. Clonal lines were also characterised with respect to HPV integration state using Amplification of Papillomavirus Oncogene Transcripts (APOT) and Detection of Integrated Papillomavirus Sequences (DIPS). Cell lines were identified that represented naturally occurring episomal and integrated HPV infections. HPV gene expression analysis was also performed using quantitative real-time reverse transcription PCR (qRT-PCR) which displayed different expression profiles for each line. Patterns of HPV gene expression appeared to correlate with gene disruptions associated with integration. Characterised clonal lines were used to investigate the effects of CDV on cell viability, morphology and HPV gene expression. CDV (10 μM) reduced cell viability in all HPV-positive clonal lines and HPV negative HEK cells; viable cell counts showed that a more considerable response was detected in vulval lines compared to vaginal lines and that response in HEK lines was similar to vulval lines. Cell enlargement was observed in response to treatment in the clonal lines but not the HEK line. CDV treatment did not cause significant reduction in expression of HPV E6 or E7. mRNA sequencing confirmed HPV integration and gene expression profiles. Differentially Expressed Gene (DEG) analysis identified a large percentage of the top 20 most significant Gene Ontology (GO) categories to be involved in nucleotide synthesis and RNA polymerase activity. Gene Ontology Over Representation Analysis (GO-ORA) showed that 4 GO categories relating to cellular senescence were found in over 300 GO categories comprising the top 500 most significant gene transcripts.
5
Fiorini, Valentina. "Sintesi di leganti ciclopentadienonici e piridilimidazolici per complessi metallici. Metodo classico e microonde a confronto". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/6015/.
Abstract (sommario):
In questo elaborato è stata messa a punto una procedura sintetica, semplice e veloce che sfrutta la tecnica microonde per la sintesi di tetraarilciclopentadienoni variamente sostituiti mediante una condensazione bis-aldolica tra 1,3 difenilacetone con dichetoni aromatici variamente sostituiti. Questa nuova tecnica consente di ottenere tetraarilciclopentadienoni con rese da basse a buone in 25 minuti a 70°C. La stessa procedura sintetica è stata valutata per ottenere leganti piridilimidazolici, usando come fonte di azoto NH4OAc. Basse rese e la formazione di svariati sottoprodotti ha diretto lo studio verso un approccio classico per la sintesi di questi sistemi. I leganti piridilimidazolici sono stati poi impiegati per la sintesi di complessi di Zn(II) luminescenti, i quali sono stati caratterizzati anche da un punto di vista fotofisico.
6
Jabboury, Huda Albert. "Constance Garnett, Alymer Maude, S.S. Koteliansky : Russian literature in England 1900-1930". Thesis, University of Sheffield, 1992. http://etheses.whiterose.ac.uk/6015/.
Abstract (sommario):
This thesis is concerned with the lives and works of three translators who made Russian literature available for the British public. It is an attempt to account for the role these translators played in arousing interest in the classics of Russia. The translations of Constance Garnett, Aylmer Maude and S. S. Koteliansky were responsible for making Russian literature feature in the intellectual life of the British culture during the first decades of this century. The relation of my work to these initiatives is described in the Introduction. Chapter One deals with England's discovery of the Russian novel through translations and its consequences that led to the spread of the "Russian cult. " This took place during the first two decades of the twentieth century which witnessed great interest in Russian literature. The British public was introduced to the major treasures of the Russian classics, and what is more, to a handful of the new generation of Russian authors. In registering the response of the literary figures of the day on reading these translations and a survey of serious periodicals, evidence is established for the cult status of Russian writing. Chapter Two throws light on the life and work of one of the most eminent of translators, Constance Garnett. The chapter surveys the wide range of Russian authors she presented, with particular emphasis on her translation of Chekhov, and the impact of her translations in the establishment of the writer's reputation in England. Chapter Three focuses on Maude's career as a translator and accounts for his greatest achievement, the accomplishment of the Centenary Edition of Tolstoy's works. Other aspects of Maude's activities are drawn upon, particularly, the fact that he was a disciple of Tolstoy. Attention is also paid to his status as an authority on Tolstoy. Chapter Four is devoted to S. S. Koteliansky and his achievements. Koteliansky's prestigious position in the English literary life, in addition to his being a supplier of new material in the field of Russian translations are stressed. The collaboration of a handful of the literary figures in the production of his translations is looked upon as further proof to the presence of the Russian cult. The thesis concludes with an account of archive materials relevant to its field.
7
Salem, Mohamed Mahmoud. "Determinants of foreign direct investment in commercial real estate and hotel sectors for selected MENA countries". Thesis, Liverpool John Moores University, 2011. http://researchonline.ljmu.ac.uk/6015/.
Abstract (sommario):
Developed, maturing, and emerging market countries are making considerable progress in the legal and institutional reforms necessary to allow and facilitate real estate and tourism (specifically hotel) foreign direct investment (FDI). From a political perspective, countries used to view real estate as one of the "crown jewels" of an economy (Lynn, 2007). No longer does this view hold consistently across countries as countries have recently recognised that real estate and hotel FDI is a way to encourage fixed capital investment, create jobs, and to introduce best practices from multinational corporations. The purpose of this research is to identify the main determinants of foreign direct investment (FDI) in the commercial real estate (CRE) as well as hotel sectors, in selected Middle Eastern countries. Utilising existing theories of FDI, a set of determinants (drivers and barriers) were selected to be empirically tested, utilising Dunning's (Ownership-Location- Internalisation-OLI) eclectic paradigm. As Dunning consider FDI for all industries with a special focus on the manufacturing industry, this research enlarges the scope by commercial real estate and hotels specific considerations. This research utilises the Location dimension of Dunning framework as a basis to explain the determinants of FDI in the CRE and hotel sectors. The literature on both real estate and hotel FDI relies heavily on collecting primary data through surveys; recently however, very few studies (including He & Zhu (2010); He, Wang, & Cheng (2009); Anop (2010) and Rodriguez & Bustillo (2008)) have utilised the availability of data in real estate and started constructing econometric models with the aim of testing set hypotheses. This research fills a gap in the literature by utilising secondary data to develop and test different econometric models, using data from various sources. The empirical work of this research therefore consists of two parts: the first is an econometric analysis of FDI in commercial real estate for eight Middle Eastern and North African (MENA) markets namely, Algeria, Egypt, Morocco, Qatar, Saudi Arabia, Turkey, Tunisia and the UAE during 2003-2009; the second part is an econometric analysis of FDI in hotels for the same countries for the same time period. The econometric analysis is carried out using the pooled Tobin model technique, for panel data, which uses both time-series and cross-sectional data. The findings for the econometric analysis of FDI in commercial real estate shows that country specific factors (i. e. economic health, standards of living and levels human development as well as political stability and absence of violence) as well I as real estate sector-specific variables (size of institutional real estate market), are significant variables and consistently support their hypotheses as explanations for commercial real estate related FDI for the selected MENA countries. The second part of the econometric analysis related to determinants of FDI in hotel greenfield projects, reveals that country specific factors (i. e. taxation environment, human development level and real growth of economy and political stability and absence of violence and terrorism) as well as hotel sector-specific variables (i. e. real visitor expenditure and level of investment freedom); are significant and consistently support their hypotheses as explanations for hotel FDI. These indicators are found to provide -a good explanation of location decision-making in both commercial real estate and hotel sectors.
8
El, Sayed Ahmed. "A broadband self-interference cancellation circuit for simultaneous full-duplex radio applications". Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/60115.
Abstract (sommario):
The full abstract for this thesis is available in the body of the thesis, and will be available when the embargo expires.Applied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate
9
Setiaputra, Dheva. "Investigating the molecular architecture of yeast histone acetyltransferase complexes". Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/60215.
Abstract (sommario):
The full abstract for this thesis is available in the body of the thesis, and will be available when the embargo expires.Medicine, Faculty of
Biochemistry and Molecular Biology, Department of
Graduate
10
Moulson, Aaron Jack Taylor. "Characterization of oligodendrocyte lineage cell responses remote to the lesion site in a murine model of thoracic contusion spinal cord injury (SCI)". Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/60315.
Abstract (sommario):
Traumatic injury to the adult mammalian central nervous system (CNS) commonly results in permanent functional impairment due to the inability of injured CNS neurons to mount an effective regenerative response. Injury to the spinal cord is associated with a range of sensory, motor, and autonomic deficits, the most severe of which is complete paralysis. At a histological level, injury induced pathophysiological processes have been thoroughly characterized for the tissue area immediately surrounding the lesion epicentre, however remote to the lesion these changes are less well described. Previous studies have demonstrated that various perturbations, including traumatic injury, demyelination, artificial neural stimulation, neurodegeneration, and social experience, among others, induce robust oligodendrocyte precursor cells (OPC) responses, which function as endogenous precursors for myelinating oligodendrocytes. De novo myelination in the adult CNS has been implicated in motor learning, memory, and optimization of neural network function, thought to represent a potent form of neural plasticity. The demonstration of robust OPC proliferation and oligodendrogenesis in models of dorsal rhizotomy, axotomy, and axon degeneration, combined with the robust OPC responses characteristic of SCI lesion epicentres, lead us to hypothesize that contusion SCI would induce significant responses in resident OPC populations remote to the lesion site (specifically comprised of OPC proliferation, oligodendrogenesis, and new myelination). This may be functionally relevant to myelin plasticity on spared motor and sensory tracts remote to the lesion. To test this hypothesis, we conducted an in vivo study employing transgenic mouse lines (i.e. PDGFRα-CreERT:ROSA26-YFP and PDGFRα-CreERT:ROSA26-mGFP) that enabled the visualization and fate-mapping of OPCs and their progeny in the adult murine spinal cord following a moderate (70 Kdyne) T9-T10 thoracic contusion injury. Consistent with our predictions, we observed robust OPC proliferation and oligodendrogenesis remote to the lesion in both the cervical and lumbar spinal cord. Surprisingly, this did not manifest as increased new myelination, attributed (at least in part) to an observed maturation impairment of newly-formed oligodendrocytes.Science, Faculty of
Zoology, Department of
Graduate
11
Steklova, Klara. "Computational methods in hydrogeophysics". Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/60815.
Abstract (sommario):
Parameter and state estimation for groundwater models within a coupled hydrogeophysical framework has become common in the last few years as it has been shown that such estimates are usually better than those from a single data inversion. Different approaches have been suggested in literature to combine the essentially two different modalities in order to obtain better estimates for groundwater models, and improve monitoring of processes such as solute transport. However, the coupled approaches usually come at a price of higher computational cost and difficulties in coupling the geophysical and groundwater inverse problems.
Unlike in other studies, we developed both the groundwater and geophysical models in the same computational environment in order to test different minimization strategies. When solving the coupled inverse problem, the objective function consists of data misfit and regularization terms as well as a coupling term that relates groundwater and geophysical states. We present a novel approach to solve the inverse problem using an Alternating Direction Method of Multipliers (ADMM) to minimize the coupled objective function. ADMM enables us to treat the groundwater and geophysical part separately and thus use existing software with minor changes.
However, ADMM as well as many other coupled approaches relies on implementing some petrophysical relationship to couple the groundwater and geophysical variable. Such relationships are usually uncertain and hard to parametrize for a large region and can potentially produce solute mass errors in the final model estimates. Therefore, in this thesis we examine coupled approaches that replace the fixed petrophysical relationship by a more loose structure similarity constraint. Besides, we propose efficient computational methods to minimize the objective function when there is no explicit petrophysical constraint.
All approaches were tested on 3D synthetic examples. In the solute tracer test we estimated hydraulic conductivity or solute distribution using a structure coupled inversion, and were able to reduce the errors compared to a single data inversion alone. For a more complex example of seawater intrusion we implemented the ADMM method, and obtained better estimates for the solute distribution compared to just considering each data separately, or solving the problem with a simple coupled approach.Science, Faculty of
Earth, Ocean and Atmospheric Sciences, Department of
Graduate
12
Jaung, Wanggi. "Certification of forest ecosystem services: concept, development, and application". Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/60915.
Abstract (sommario):
Although forests provide various ecosystem services that support human welfare, forest ecosystems have undergone continuous degradation. To mitigate forest loss from illegal logging, forest certification was launched in the early-1990s, and the interest in certification has been expanding in scope from timber to a range of ecosystem services for a complete approach to sustainable forest management. This thesis defines such a certification scheme as the certification of forest ecosystem services (CFES).
In the first part, I propose a conceptual framework for CFES and argue that a key function of the certification system is to disclose information on the provision of ecosystem services to the market. This function distinguishes CFES from forest certification and may support improvements of market-based policy instruments for ecosystem services (Chapter 2).
The second part examines the possible development of CFES as an expansion of the Forest Stewardship Council (FSC) system, and analyzes the key FSC stakeholders, including certification bodies, enabling partners, and certificate holders. Their adaptability to ecosystem services was relatively high for biodiversity conservation, carbon storage, and non-timber forest products (Chapter 3). The adaptability also indicated that watershed and soil conservation services could be bundled to reduce the costs of certifying each service (Chapter 4). The FSC certificate holders preferred CFES that offers a price premium, technical training for forest owners, and/or access to global service markets, but their willingness to pay was low (Chapter 5).
The third part focuses on applying CFES to a payment for watershed services in West Lombok, Indonesia. Service buyers, sellers, and intermediaries perceived certification as a potential tool to improve watershed management (Chapter 6). Buyers demanded certified services that disclose water quality, flood risk, and/or environmental and social forest safeguards (Chapter 7).Forestry, Faculty of
Graduate
13
Wiewel, Petrus Gregorius. "Rechtsbescherming tegen bestraffing een onderzoek naar de rechterlijke toetsingsgronden bij het opleggen van bestuurlijke boeten en de vergelijkbare beslissingen in strafzaken /". Nijmegen : Amsterdam : Ars Aequi Libri ; Universiteit van Amsterdam [Host], 2001. http://dare.uva.nl/document/60515.
14
Vlasic, Daniel 1979. "Reconstruction and analysis of dynamic shapes". Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/60815.
Abstract (sommario):
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2010.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 122-141).
Motion capture has revolutionized entertainment and influenced fields as diverse as the arts, sports, and medicine. This is despite the limitation that it tracks only a small set of surface points. On the other hand, 3D scanning techniques digitize complete surfaces of static objects, but are not applicable to moving shapes. I present methods that overcome both limitations, and can obtain the moving geometry of dynamic shapes (such as people and clothes in motion) and analyze it in order to advance computer animation. Further understanding of dynamic shapes will enable various industries to enhance virtual characters, advance robot locomotion, improve sports performance, and aid in medical rehabilitation, thus directly affecting our daily lives. My methods efficiently recover much of the expressiveness of dynamic shapes from the silhouettes alone. Furthermore, the reconstruction quality is greatly improved by including surface orientations (normals). In order to make reconstruction more practical, I strive to capture dynamic shapes in their natural environment, which I do by using hybrid inertial and acoustic sensors. After capture, the reconstructed dynamic shapes are analyzed in order to enhance their utility. My algorithms then allow animators to generate novel motions, such as transferring facial performances from one actor onto another using multi-linear models. The presented research provides some of the first and most accurate reconstructions of complex moving surfaces, and is among the few approaches that establish a relationship between different dynamic shapes.
by Daniel Vlasic.
Ph.D.
15
Teherani, James Towfik. "Band-to-band tunneling in silicon diodes and tunnel transistors". Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/60215.
Abstract (sommario):
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2010.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student submitted PDF version of thesis.
Includes bibliographical references (p. 82-83).
This work studies the effect of mechanically applied uniaxial strain on reverse-bias band-to-band tunneling current in n+/p+ vertical silicon diodes fabricated on {100} and {110} substrate orientations. The Band Structure Lab and nextnano are used to analyze the change in band structure with uniaxial stress applied perpendicular to the tunneling direction along <100> and <110> crystal directions. A theoretical analysis based on the Wentzel-Kramers-Brillouin (WKB) approximation for tunneling probability combined with an uncoupled full-band Poisson equation solver and the calculated band structure changes is developed to model the experimental results. Reasonable agreement between experimental data and theoretical calculations is found when comparing the relative change in tunneling current at 1 V reverse-bias versus strain for different substrate orientation/strain configurations.
by James Towfik Teherani.
S.M.
16
Neves, Eliete Henrique das. "Análise da degradação ambiental da bacia hidrográfica do Arroio Pelotas-RS, através do Diagnóstico Físico-Conservacionista (DFC)". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/60815.
Abstract (sommario):
La recherche a été basée sur une étude de la nature de l'environnement, il a été proposé la mise en oeuvre de la méthodologie de physique diagnostic conservationniste (DFC) pour analyser la dégradation de l'environnement dans le Bassin Hydrographique de Arroio Pelotas (BHAP). Bâtiment sur la méthodologie développée, d'abord, par le Centre pour le Développement de L'eau et la Terre (CIDIAT), basée au Venezuela et par le Ministère de L'environnement et des Ressources Naturelles Renouvelables (MARNR) d'un même pays et adapté à la réalité brésilienne, par Beltrame. Le BHAP est situé dans la région du sud-est de L'État de Rio Grande do Sul, partie couvre quatre municipalités, Arroio Padre, Canguçu, Morro Redondo et Pelotas, d'une superficie d'environ 923 km2 et le cours du bassin a une superficie de 99 km de leur source à l'embouchure. La DFC est l'application des sept paramètres qui vont composer la formule descriptive finale, qui avait déclaré sur l'indice de dégradation pour chaque secteur du bassin. La presse spécialisée BHAP envisageait la géomorphologie, drainage, réseau de pente et surtout la géologie, qui a donné naissance à deux secteurs : le secteur A 699 km2 (ESRG) et le secteur B 224 km2 (PCRS). Les résultats de la formule finale décrivant liée à l'équation de la ligne dans laquelle exprimé numériquement la conservation de l'état physique, bassin a démontré que dans le secteur A de 699 km2 (75.73 %) qui composent cette zone, 581.02 Km2 sont traverse une sorte de degradacional, qui correspond à environ 62.94 % de cette secteur. Secteur B 224 km2 (24,27 %) distribué dans ce domaine sont sur l'effet de 107.83 km2 de certains processus de dégradation, ce qui correspond à cette 11.69 % de secteur. Après recoupement de toutes les données, ainsi que la comparaison de l'utilisation des terres dans les années 1985 et 2011, il était possible de créer une carte finale qui démontre le potentiel de la susceptibilité aux processus de degradacionais des secteurs de BHAP. Ont été classées cinq niveaux de sensibilité et d'utilisation des terres liées à ces processus, optimisation. Compréhension ainsi conservée sont les zones qui correspondent à un niveau trop élevé sur une carte de la susceptibilité et le montant de 2 % la secteur A et à 6 % le secteur de B. Les zones d'être indemnisée pour correspondent à un niveau élevé et représentent 13 % du secteur A et la secteur B 9 % ; les zones à être optimisé sont équivalents à modérer le niveau élevé et représentent le secteur A 24 % et le secteur B 13 % ; les zones doivent être maintenus avec la même utilisent modérée et de bas niveaux sont équivalentes et de la somme dans le secteur est de secteur A 27 % et 7 % de la secteur B. Pour le terrain proposé, utilisez optimisation pour être efficace dans le combat ou la stabilisation du processus de dégradation est nécessaire l'utilisation des pratiques de conservation. L'application de la DFC s'est avérée pour être efficace pour l'analyse de la dégradation de l'environnement ne sont pas BHAP juste une question de simples demande, mais l'ajout et l'amélioration des solutions pour l'acquisition du contenu des paramètres. Les résultats obtenus dans cette enquête peuvent servir à collaborer sur une planification environnementale durable comme à l'utilisation de terres de subvention en BHAP, permettant l'identification et la réduction des impacts environnementaux négatif.A pesquisa constituiu-se em um estudo de cunho ambiental, em que foi proposta a aplicação da metodologia do Diagnóstico Físico-Conservacionista (DFC) para analisar a degradação ambiental na Bacia Hidrográfica do Arroio Pelotas (BHAP). Baseando-se na metodologia desenvolvida, primeiramente, pelo Centro Interamericano de Desenvolvimento de Águas e Terras (CIDIAT), com sede na Venezuela, e pelo Ministério do Ambiente e dos Recursos Naturais Renováveis (MARNR) deste mesmo país e adaptada a realidade brasileira, por Beltrame. A BHAP está localizada na região sudeste do Estado do Rio Grande do Sul, abrange parte de quatro municípios, Arroio do Padre, Canguçu, Morro Redondo e Pelotas, com uma área de aproximadamente 923 km2 e o curso principal da bacia tem extensão de 99 km de suas nascentes até a foz. O DFC consiste na aplicação de sete parâmetros que irão compor a fórmula descritiva final, a qual indicará o índice de degradação de cada setor da bacia. A BHAP foi setorizada levando em consideração a geomorfologia, a rede de drenagem, declividade e principalmente a geologia, a qual deu origem a dois setores: setor A 699 km2 (ESRG) e setor B 224 km2 (PCRS). Os resultados da fórmula descritiva final relacionada com a equação da reta na qual expressa numericamente o estado físico-conservacionista da bacia, demostraram que no setor A dos 699 km2 (75,73%) que compõem esta área, 581.02 km2 estão passando por algum tipo de processo degradacional, o que corresponde a aproximadamente 62,94% deste setor. No setor B dos 224 km2 (24,27%) distribuídos nesta área, 107.3 km2 estão sobre o efeito de algum processo de degradação, o que, corresponde a 11,69% deste setor. Após o cruzamento de todos os dados, bem como a comparação entre os usos do solo nos anos de 1985 e 2011, foi possível criar um mapa final que demostrou-se o potencial de suscetibilidade a processos degradacionais dos setores da BHAP. Foram classificados cinco níveis de suscetibilidade e relacionado a esses, processos de otimização do uso do solo. Compreendendo então, as áreas a serem preservadas que correspondem ao nível muito alto no mapa de suscetibilidade e equivalem a 2% do setor A e 6% do setor B. As áreas a serem recuperadas correspondem ao nível alto e representam 13% do setor A e 9% do setor B; as áreas a serem otimizadas equivalem ao nível moderado a alto e representam 24% do setor A e 13% do setor B; as áreas a serem mantidas com o mesmo uso equivalem aos níveis moderado e baixo e a somatória no setor A é de 27% e do setor B 7%. Para que as proposta de otimização do uso do solo seja eficaze no combate ou estabilização do processo de degradação é preciso a utilização de práticas conservacionistas. A aplicação do DFC mostrou-se eficiente para a análise da degradação ambiental na BHAP, não sendo apenas uma questão de simples aplicação, mas sim o acréscimo e aperfeiçoamento de soluções para a aquisição dos índices dos parâmetros. Os dados obtidos nesta pesquisa poderão ser empregados para colaborar em um planejamento ambiental, como subsidio sustentável para o uso do solo na BHAP, permitindo a identificação e redução dos impactos ambientais negativos.
17
Cavanagh, Donovan James. "A comparative analysis of the correlations between section 12 of the Competition Act 89 of 1998 and section 2 of the Companies Act 71 of 2008". Diss., University of Pretoria, 2016. http://hdl.handle.net/2263/60115.
Abstract (sommario):
This dissertation undertakes an investigation into the correlations between the provisions of the Competition Act 89 of 1998 and that of the Companies Act 71 of 2008 with regards to what each of the aforementioned Acts defines as ?control?.
There is a symbiotic relationship between the domains of corporate law and competition law. The latter depends significantly on the provisions of the former when interpreting the scope and application of certain of its provisions, notably in the context of mergers. This relationship has been extensively complicated by the repeal of the Companies Act 61 of 1973 and the inception of the Companies Act 71 of 2008.
This dissertation embarks on a discussion of the most prevailing similarities between section 2 of the Companies Act 71 of 2008 and section 12 of the Competition Act 89 of 1998. While discussing these similarities, the implications which the repealed Act has on competition law will also be canvassed and the author will attempt to reach clarity on the best manner forward.Mini Dissertation (LLM)--University of Pretoria, 2016.
Mercantile Law
LLM
Unrestricted
18
Verseput, Lisa. "The creative conservatory : a community media & creative arts centre". Diss., University of Pretoria, 2016. http://hdl.handle.net/2263/60215.
Abstract (sommario):
Johannesburg was built on the discovery and exploitation of gold, but the gold mines are
depleted, and a new resource is driving the city: human capital. The ingenuity and aspirations
of the dense and diverse population sustain Johannesburg as the economic capital of the
country, but the City has lost its golden meaning and is striving for a new identity: to become
the Cultural Capital of South Africa, an embodiment of diversity, creativity, and cultural
expression. People and cultures of the City mix and spark ideas in public space, so Joubert
Park, the central, largest, and oldest park in Johannesburg and home to the Johannesburg Art
Gallery, should play a role in Johannesburg's transformation into the Cultural Capital.
The Joubert Park Conservatory is a century old ornamental greenhouse, once spectacular, it
now lies abandoned and in disrepair. The Conservatory and its precinct currently provides no
significant contribution to the public of Joubert Park, but its iconic design and position indicate
its potential to be rediscovered as an important public space. This dissertation investigates
how spatial interventions can be mobilised to re-establish the forgotten significance of
the site, and introduce a programme that will respect and enhance the heritage of the
Conservatory and its cultural landscape to contribute to Joubert Park as well as the greater
urban environment as the Cultural Capital.
The proposed programme is the Creative Conservatory (CC), a community media and arts
centre driving universal media accessibility and providing an enabling environment for the
cultivation of artistic and cultural expression and development. The CC serves the community,
mobilising the arts for social and economic development, thus supporting the creative
economy and cultural landscape of Johannesburg. The architectural intervention of the CC is
designed for the present, while inspired by and responding to heritage, so as to create places
that will remain relevant in the future.Johannesburg is gebou op die ontdekking en ontginning van goud, maar goud resereves loop nou leeg en 'n nuwe hulpbron kan die stad vorentoe dryf: menslike kapitaal. Die kreatiwiteit en aspirasies van 'n diverse bevolking onderhou Johannesburg as die ekonomiese spilpunt van die land, maar die stad het sy goue betekinis verloor en streef nou na 'n nuwe identiteit: om die Kulturele Hoofstad van Suid Afrika te word - 'n vergestalt diversiteit, kreatiwiteit en kulturele uitdrukking. Mense en kulture in die stad meng en nuwe idees word in publieke ruimtes gegenereer. Joubert Park is die stad se grootste en oudste park en huisves die Johannesburg Kunsgallery, hierdie ruimte kan 'n belangrike rol speek in die stad se transformasie na kulturele kapitaal. Die Joubert Park Konservatorium is 'n eeu-oue en eens indrukwekkended onrnamentele kweekhuis, nou verlate en onversorgd. Die Konservatorium en sy omliggende ruimtes dra nie tot die park by nie, maar sy ikoniese form en posisie hou potensiaal in wat herontdek kan word as 'n publieke ruimte van belang. Hierdie verhandeling ondersoek hoe ruimtelike veranderinge gebruik kan word om die vergete waarde van die terrein te herstel. 'n Nuwe program wat die erfenis van die terrein repspekteer kan dit terselfdetyd verbeter om as kulturele landskap by te dra tot Joubert Park en tot die stedelike omgewing daarom by te dra as kulturale kapitaal. Die program wat voorgestel word is die Kreatiewe Konservatorium, 'n gemeenskapsentrum vir media en kuns wat universele media toegang dryf en 'n omgewing skep vir die kultivasie van kuns en kulturele ontwikkeling en uitdrukking. Die Kreatiewe Konservatorium bedien die gemeenskap en mobiliseer die kunste ten einde sosiale en ekonomiese ontwikkeling te bewerkstellig en soedoende die kreatiewe ekonomie en kulturele landskap van Johannesburg te ondersteun. Die projek is ontwerp vir die hede, ge?nspireer deur en in reaksie tot erfenis, om plekke te skep wat relevant sal bly in die toekoms.
Mini Dissertation (MArch (Prof))--University of Pretoria, 2016.
Architecture
MArch (Prof)
Unrestricted
19
Sadiki, Lufuno. "The experiences of homeless people as victims of crime in urban and rural settings". Diss., University of Pretoria, 2016. http://hdl.handle.net/2263/60415.
Abstract (sommario):
Homeless people are among the most vulnerable people in society, suffering from acute levels of poverty, social exclusion and violence. Homeless people are often seen as a cause of crime; however, they are in fact more likely to be victims of crime rather than perpetrators. Much of the violence experienced by homeless people is committed by members of the public and such incidences generally go unreported. This study set out to determine the nature and extent of victimisation experienced by homeless people living in Pretoria (Gauteng) and the rural areas surrounding Thohoyandou (Limpopo).
The study was descriptive in nature with an exploratory element. Data was collected by means of structured questionnaire administered through face-to-face survey methods. Snowball sampling was used to interview 40 urban and 30 rural homeless people. Data was analysed using the Statistical Package for the Social Sciences (v23), which allowed for descriptive and inferential analyses between the two settings.
The mean age of respondents was 34.9 years (standard deviation 8.1 years). The vast majority of the respondents were males (95.7%) and African (92.9%) who had been chronically homeless (71.4%). The main reasons for being homeless were due to unemployment (48.0%), being an illegal immigrant (17.7%) and family breakdown (11.4%). Almost half of respondents felt unsafe while living on the streets (45.7%) and feared becoming a victim of crime in the next year (57.1%). The greater proportion of respondents (52.9%) had been victimised since becoming homeless, reporting physical assault (35.1%), grievous bodily harm (10.8%), verbal abuse (5.4%) and theft (70.2%). Statistically significant differences (p < 0.05; r > -0.36) featured between urban and rural homeless people in terms of, among others, fear of assault, theft and harassment. The study further reports on victimisation of homeless people in terms of location, perpetrator characteristics, reporting and responses to victimisation.
Homeless people were victimised more than the general population and were mostly victims of physical assault and theft. Homeless people were more likely to retaliate physically than report their victimisation to the police because they did not trust the police. Considering the results of the study and the literature review, intervention to end homelessness and assist homeless people should focus on providing homeless people with necessary skills to find employment, mediate the relationship between homeless people and the police and strategies should be developed that reunites homeless people with their families.Dissertation (MSW)--University of Pretoria, 2016.
Social Work and Criminology
MSW
Unrestricted
20
Nyakane, Bronwyn Ellinah. "Perceptions of individual taxpayers of different age groups on equity exchange in South Africa". Diss., University of Pretoria, 2016. http://hdl.handle.net/2263/60515.
Abstract (sommario):
This study concerns the distributional fairness of taxes (horizontal and vertical fairness) and the exchange of equity. This study is mainly directed towards the exchange of equity between taxpayers and government. It is evident from the literature related to tax compliance that perceived ineffectiveness and inadequacy of government service delivery in exchange for taxes imposed on the citizens of a country is an important phenomenon that may negatively impact on the tax compliance of taxpayers. The taxpayer-government exchange relationship is, in essence, nothing more than a contractual relationship between taxpayers and government, and it must be fair to all parties.
Studies in South Africa that focus on the taxpayer-government exchange as a phenomenon are very limited, not only in terms of the number of studies, but also in terms of the scope of the studies. One of the specific problems with existing studies in South Africa is that the age of individual taxpayers is not explored as a demographic variable that may impact on these taxpayers' perception of the fairness of the equity exchange in South Africa.
The main purpose of this study is to empirically explore the perceptions of individual South African taxpayers of different age groups on the taxpayer-government exchange relationship. The study falls within the paradigm of interpretivism. It is exploratory in nature, using descriptive statistics as a technique for analysing primary data collected from individual taxpayers in South Africa by means of a web-based questionnaire.
The results of the study indicated that in all age groups, the majority of respondents were of the opinion that ineffective government service delivery increased their tax burden. It emerged that respondents held the same views irrespective of age, and therefore it appears from these results that age as a demographic variable does not significantly impact on individual taxpayers' perceptions of the equity exchange in South Africa. This is in contrast with findings in international studies, where the age difference between respondents emerged as a significant variable that may affect individual taxpayers' perceptions of the taxpayer-government equity exchange in those countries.Mini Dissertation (MCom)--University of Pretoria, 2016.
Taxation
MCom
Unrestricted
21
Johnston, Jeandre Andrew. "Starch modified with stearic acid and xanthan gum as a stabiliser in a fermented whey beverage". Diss., University of Pretoria, 2016. http://hdl.handle.net/2263/60815.
Abstract (sommario):
Whey is a by-product of cheese manufacturing and can be used to make a fermented whey beverage. However, the beverage rapidly separates by sedimentation. The addition of a stabiliser to the beverage can improve the texture of the beverage and prevent sedimentation due to the viscosity increase. Chemically modified starches are used as stabilisers in the food industry. Nevertheless, consumer concerns have demanded for less synthetic chemically modified ingredients in foods, and instead prefer clean-label ingredients. Starch modified with lipids and xanthan gum can be regarded as clean-label. The objective of this study is to determine the effect of modified starch treated with stearic acid and xanthan gum, on the quality of a fermented whey beverage.
Firstly, the properties of maize and high amylose maize starch (HAMS) modified with stearic acid and xanthan gum alone and in combination was determined. Normal maize starch was pasted with and without the modifying agents for two hours at 91 °C under atmospheric pressure. HAMS was pasted with and without modifying agents under pressure (500 kPa) for 10 minutes at 121 °C followed by 91 °C for 110 minutes. The gel strength and thermal properties of the pasted samples were analysed. The flow properties and characteristics of the beverages with the modified starches were evaluated at set intervals over a 15 day period. The IKA® LR 1000 reactor vessel used in upscale-processing could only operate under atmospheric pressure and could thus not fully gelatinise the HAMS. As a result, only maize starch (pasted alone and modified with stearic acid and xanthan gum, alone and in combination) could be used as a stabiliser in the fermented whey beverage.
Maize starch pasted with xanthan gum had an increased pasting viscosity relative to maize starch alone. The viscosity of HAMS pasted with xanthan gum was lower relative to the HAMS pasted alone. The high temperature and pressure processing conditions that affect the pasting of HAMS could potentially have degraded the xanthan gum. This could be a reason why an increase in viscosity was not observed as with the maize starch. The presence of amylose-lipid complexes (with and without xanthan gum) in both the maize starch and HAMS that was pasted with stearic acid, resulted in an increased pasting viscosity. Furthermore, the amylose-lipid complexes prevented a gel formation in both starches, possibly by interfering with the retrogradation of amylose chains.
The differential scanning calorimetry showed that maize starch pasted with stearic acid had more crystalline amylose-lipid complexes than the maize control. Decreased amounts of Type II amylose-lipid complexes were observed for the maize starch pasted with stearic acid and xanthan gum. It is presumed that the xanthan gum interferes with the formation of the amylose-lipid complexes in normal maize starch. HAMS pasted alone had Type II amylose-lipid complexes. The abundant amylose content and higher pasting temperatures could be a cause for the prevalent formation of the more crystalline Type II amylose-lipid complexes. The viscosity of HAMS was too low to significantly impact the beverage, therefore it was not used in the beverage formulation.
The beverages with the modified starch had increased levels of viscosity, decreased levels of sedimentation and increased degrees of shear thinning relative to the whey beverage with no starch. The beverages with the stearic acid modified starch (with and without xanthan gum) had a lower viscosity, increased level of sedimentation and a smaller degree of shear thinning relative to the beverages with modified starch (with and without xanthan gum). The lower viscosity could be due to the lack of the retrograded starch. It is believed that the decrease in shear thinning could be attributed to the compact size of the amylose-lipid complex relative to the long uncomplexed amylose molecules. However, the beverages with stearic acid modified starch (with and without xanthan gum) showed more consistent flow properties throughout the 15 day period in relation to the beverages with modified starch (with and without xanthan gum).
Maize starch modified with stearic acid has potential as a thickener and stabiliser in a fermented whey beverage as it shows limited changes during storage and shows higher viscosity. Further research into the rheological and sensory properties of the whey beverage with starch modified lipids is recommended for a marketable product.Dissertation (MSc)--University of Pretoria, 2016.
Food Science
MSc
Unrestricted
22
Шестакова, Н. Ф. "Историческая память Уэльса (конец XV – начало XX вв.): основные этапы и механизмы конструирования. : автореферат диссертации на соискание ученой степени кандидата исторических наук : 07.00.03". Thesis, б. и, 2018. http://hdl.handle.net/10995/60315.
23
Cesana, F. "Synthesis of metal complexes with nitrogen donor macrocyclic ligands and their use as homogeneous catalysts in stereoselective syntheses". Doctoral thesis, Università degli Studi di Milano, 2008. http://hdl.handle.net/2434/60915.
24
Kandji, Baye Matar. "Stochastic recurrent equations : structure, statistical inference, and financial applications". Electronic Thesis or Diss., Institut polytechnique de Paris, 2023. http://www.theses.fr/2023IPPAG004.
Abstract (sommario):
Nous nous intéressons à l'étude des propriétés théoriques des équations récurrentes stochastiques (SRE) et de leurs applications en finance. Ces modèles sont couramment utilisés en économétrie, y compris en économétrie de la finance, pour styliser la dynamique d'une variété de processus tels que la volatilité des rendements financiers. Cependant, la structure de probabilité ainsi que les propriétés statistiques de ces modèles sont encore mal connues, particulièrement lorsque le modèle est considéré en dimension infinie ou lorsqu'il est généré par un processus non indépendant. Ces deux caractéristiques entraînent de formidables difficultés à l'étude théorique de ces modèles. Dans ces contextes, nous nous intéressons à l'existence de solutions stationnaires, ainsi qu'aux propriétés statistiques et probabilistes de ces solutions.Nous établissons de nouvelles propriétés sur la trajectoire de la solution stationnaire des SREs que nous exploitons dans l'étude des propriétés asymptotiques de l'estimateur du quasi-maximum de vraisemblance (QMLE) des modèles de volatilité conditionnelle de type GARCH. En particulier, nous avons étudié la stationnarité et l'inférence statistique des modèles GARCH(p,q) semi-forts dans lesquels le processus d'innovation n'est pas nécessairement indépendant. Nous établissons la consistance du QMLE des GARCH (p,q) semi-forts sans hypothèses d'existence de moment, couramment supposée pour ces modèles, sur la distribution stationnaire. De même, nous nous sommes intéressés aux modèles GARCH à deux facteurs (GARCH-MIDAS); un facteur de volatilité à long terme et un autre à court terme. Ces récents modèles introduits par Engle et al. (2013) ont la particularité d'avoir des solutions stationnaires avec des distributions à queue épaisse. Ces modèles sont maintenant fréquemment utilisés en économétrie, cependant, leurs propriétés statistiques n'ont pas reçu beaucoup d'attention jusqu'à présent. Nous montrons la consistance et la normalité asymptotique du QMLE des modèles GARCH-MIDAS et nous proposons différentes procédures de test pour évaluer la présence de volatilité à long terme dans ces modèles. Nous illustrons nos résultats avec des simulations et des applications sur des données financières réelles.Enfin, nous étendons le résultat de Kesten (1975) sur le taux de croissance des séquences additives aux processus superadditifs. Nous déduisons de ce résultat des généralisations de la propriété de contraction des matrices aléatoires aux produits d'opérateurs stochastiques. Nous utilisons ces résultats pour établir des conditions nécessaires et suffisantes d'existence de solutions stationnaires du modèle affine à coefficients positifs des SREs dans l'espace des fonctions continues. Cette classe de modèles regroupe la plupart des modèles de volatilité conditionnelle, y compris les GARCH fonctionnelsWe are interested in the theoretical properties of Stochastic Recurrent Equations (SRE) and their applications in finance. These models are widely used in econometrics, including financial econometrics, to explain the dynamics of various processes such as the volatility of financial returns. However, the probability structure and statistical properties of these models are still not well understood, especially when the model is considered in infinite dimensions or driven by non-independent processes. These two features lead to significant difficulties in the theoretical study of these models. In this context, we aim to explore the existence of stationary solutions and the statistical and probabilistic properties of these solutions.We establish new properties on the trajectory of the stationary solution of SREs, which we use to study the asymptotic properties of the quasi-maximum likelihood estimator (QMLE) of GARCH-type (generalized autoregressive conditional heteroskedasticity) conditional volatility models. In particular, we study the stationarity and statistical inference of semi-strong GARCH(p,q) models where the innovation process is not necessarily independent. We establish the consistency of the QMLE of semi-strong GARCHs without assuming the commonly used condition that the stationary distribution admits a small-order moment. In addition, we are interested in the two-factor volatility GARCH models (GARCH-MIDAS); a long-run, and a short-run volatility. These models were recently introduced by Engle et al. (2013) and have the particularity to admit stationary solutions with heavy-tailed distributions. These models are now widely used but their statistical properties have not received much attention. We show the consistency and asymptotic normality of the QMLE of the GARCH-MIDAS models and provide various test procedures to evaluate the presence of long-run volatility in these models. We also illustrate our results with simulations and applications to real financial data.Finally, we extend a result of Kesten (1975) on the growth rate of additive sequences to superadditive processes. From this result, we derive generalizations of the contraction property of random matrices to products of stochastic operators. We use these results to establish necessary and sufficient conditions for the existence of stationary solutions of the affine case with positive coefficients of SREs in the space of continuous functions. This class of models includes most conditional volatility models, including functional GARCHs
25
Sirvent, Pardell Raül. "GRID superscalar: a programming model for the Grid". Doctoral thesis, Universitat Politècnica de Catalunya, 2009. http://hdl.handle.net/10803/6015.
Abstract (sommario):
Durant els darrers anys el Grid ha sorgit com una nova plataforma per la computació distribuïda. La tecnologia Gris permet unir diferents recursos de diferents dominis administratius i formar un superordinador virtual amb tots ells. Molts grups de recerca han dedicat els seus esforços a desenvolupar un conjunt de serveis bàsics per oferir un middleware de Grid: una capa que permet l'ús del Grid. De tota manera, utilitzar aquests serveis no és una tasca fácil per molts usuaris finals, cosa que empitjora si l'expertesa d'aquests usuaris no està relacionada amb la informàtica.Això té una influència negativa a l'hora de que la comunitat científica adopti la tecnologia Grid. Es veu com una tecnologia potent però molt difícil de fer servir. Per facilitar l'ús del Grid és necessària una capa extra que amagui la complexitat d'aquest i permeti als usuaris programar o portar les seves aplicacions de manera senzilla.
Existeixen moltes propostes d'eines de programació pel Grid. En aquesta tesi fem un resum d'algunes d'elles, i podem veure que existeixen eines conscients i no-conscients del Grid (es programen especificant o no els detalls del Grid, respectivament). A més, molt poques d'aquestes eines poden explotar el paral·lelisme implícit de l'aplicació, i en la majoria d'elles, l'usuari ha de definir aquest paral·lelisme de manera explícita. Una altra característica que considerem important és si es basen en llenguatges de programació molt populars (com C++ o Java), cosa que facilita l'adopció per part dels usuaris finals.
En aquesta tesi, el nostre objectiu principal ha estat crear un model de programació pel Grid basat en la programació seqüencial i els llenguatges més coneguts de la programació imperativa, capaç d'explotar el paral·lelisme implícit de les aplicacions i d'accelerar-les fent servir els recursos del Grid de manera concurrent. A més, com el Grid és de naturalesa distribuïda, heterogènia i dinàmica i degut també a que el nombre de recursos que pot formar un Grid pot ser molt gran, la probabilitat de que es produeixi una errada durant l'execució d'una aplicació és elevada. Per tant, un altre dels nostres objectius ha estat tractar qualsevol tipus d'error que pugui sorgir durant l'execució d'una aplicació de manera automàtica (ja siguin errors relacionats amb l'aplicació o amb el Grid). GRID superscalar (GRIDSs), la principal contribució d'aquesta tesi, és un model de programació que assoleix els
objectius mencionats proporcionant una interfície molt petita i simple i un entorn d'execució que és capaç d'executar en paral·lel el codi proporcionat fent servir el Grid. La nostra interfície de programació permet a un usuari programar una aplicació no-conscient del Grid, amb llenguatges imperatius coneguts i populars (com C/C++, Java, Perl o Shell script) i de manera seqüencial, per tant dóna un pas important per ajudar als usuaris a adoptar la tecnologia Grid.
Hem aplicat el nostre coneixement de l'arquitectura de computadors i el disseny de microprocessadors a l'entorn d'execució de GRIDSs. Tal com es fa a un processador superescalar, l'entorn d'execució de GRIDSs és capaç de realitzar un anàlisi de dependències entre les tasques que formen l'aplicació, i d'aplicar tècniques de renombrament per incrementar el seu paral·lelisme. GRIDSs genera automàticament a partir del codi principal de l'usuari un graf que descriu les dependències de dades en l'aplicació. També presentem casos d'ús reals del model de programació en els camps de la química computacional i la bioinformàtica, que demostren que els nostres objectius han estat assolits.
Finalment, hem estudiat l'aplicació de diferents tècniques per detectar i tractar fallades: checkpoint, reintent i replicació de tasques. La nostra proposta és proporcionar un entorn capaç de tractar qualsevol tipus d'errors, de manera transparent a l'usuari sempre que sigui possible. El principal avantatge d'implementar aquests mecanismos al nivell del model de programació és que el coneixement a nivell de l'aplicació pot ser explotat per crear dinàmicament una estratègia de tolerància a fallades per cada aplicació, i evitar introduir sobrecàrrega en entorns lliures d'errors.
During last years, the Grid has emerged as a new platform for distributed computing. The Grid technology allows joining different resources from different administrative domains and forming a virtual supercomputer with all of them.
Many research groups have dedicated their efforts to develop a set of basic services to offer a Grid middleware: a layer that enables the use of the Grid. Anyway, using these services is not an easy task for many end users, even more if their expertise is not related to computer science. This has a negative influence in the adoption of the Grid technology by the scientific community. They see it as a powerful technology but very difficult to exploit. In order to ease the way the Grid must be used, there is a need for an extra layer which hides all the complexity of the Grid, and allows users to program or port their applications in an easy way.
There has been many proposals of programming tools for the Grid. In this thesis we give an overview on some of them, and we can see that there exist both Grid-aware and Grid-unaware environments (programmed with or without specifying details of the Grid respectively). Besides, very few existing tools can exploit the implicit parallelism of the application and in the majority of them, the user must define the parallelism explicitly. Another important feature we consider is if they are based in widely used programming languages (as C++ or Java), so the adoption is easier for end users.
In this thesis, our main objective has been to create a programming model for the Grid based on sequential programming and well-known imperative programming languages, able to exploit the implicit parallelism of applications and to speed them up by using the Grid resources concurrently. Moreover, because the Grid has a distributed, heterogeneous and dynamic nature and also because the number of resources that form a Grid can be very big, the probability that an error arises during an application's execution is big. Thus, another of our objectives has been to automatically deal with any type of errors which may arise during the execution of the application (application related or Grid related).
GRID superscalar (GRIDSs), the main contribution of this thesis, is a programming model that achieves these mentioned objectives by providing a very small and simple interface and a runtime that is able to execute in parallel the code provided using the Grid. Our programming interface allows a user to program a Grid-unaware application with already known and popular imperative languages (such as C/C++, Java, Perl or Shell script) and in a sequential fashion, therefore giving an important step to assist end users in the adoption of the Grid technology.
We have applied our knowledge from computer architecture and microprocessor design to the GRIDSs runtime. As it is done in a superscalar processor, the GRIDSs runtime system is able to perform a data dependence analysis between the tasks that form an application, and to apply renaming techniques in order to increase its parallelism. GRIDSs generates automatically from user's main code a graph describing the data dependencies in the application.
We present real use cases of the programming model in the fields of computational chemistry and bioinformatics, which demonstrate that our objectives have been achieved.
Finally, we have studied the application of several fault detection and treatment techniques: checkpointing, task retry and task replication. Our proposal is to provide an environment able to deal with all types of failures, transparently for the user whenever possible. The main advantage in implementing these mechanisms at the programming model level is that application-level knowledge can be exploited in order to dynamically create a fault tolerance strategy for each application, and avoiding to introduce overhead in error-free environments.
26
Kimball, Jorja Lay. "A study of engineering student attributes and time to completion of first year required courses at Texas A&M University". Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/6015.
Abstract (sommario):
For many years, colleges of engineering across the nation have required that a foundational set of courses be completed for entry into upper division coursework or into a specific engineering major. Since 1998, The Dwight Look College of Engineering at Texas A&M University (TAMU) has required that incoming first-time enrolling students complete a Core Body of Knowledge (CBK) with specific cumulative grade points required for specific majors. However, considerations of the time to completion of coursework and other student characteristics and academic factors have not been taken into consideration by TAMU, like most institutions. The purpose of this study is to determine for first year engineering students at TAMU the relationship of gender, ethnicity, engineering major, unmet financial need, cumulative grade point average, and total transfer hours on time to completion of CBK courses. The results of the analysis showed that cumulative grade point average (CGPA) had the strongest relationship to completion of CBK of any independent variable in this study. Statistical significance was found for the following variables in this study: CGPA, gender, ethnicity, and unmet financial need. For the study's variable of major, statistical significance was found for Chemical, Electrical, and Computer Engineering majors. The one variable in this study that did not show statistical significance in relation to time to completion of CBK was transfer credit. Findings with implications for recruitment and retention of underrepresented in engineering is a statistical significance indicating that on average females are taking less time than males to complete CBK. The conclusion from the study is that efforts to attract more women into engineering have merit as do programs to support underrepresented students in order that they may complete CBK at a faster pace. Further study to determine profiles of those majors where statistical significance was found for students taking a greater or lesser amount of time for CBK completion than the mean is recommended, as is ongoing data collection and comparison for current cohorts of engineering majors at TAMU.
27
小野, 耕二, e Koji Ono. "Toward A Comparative Politics for Analyzing : Those Nations Making the Transformation from A Planned to A Market Economy". 名古屋大学大学院法学研究科, 2003. http://hdl.handle.net/2237/6015.
28
Santos, Thalison dos. "Rock-art of toca do Paraguaio (Piauí, Brazil)". Master's thesis, Instituto Politécnico de Tomar. Universidade de Trás-os-Montes e Alto Douro, 2013. http://hdl.handle.net/10400.26/6015.
Abstract (sommario):
Master Erasmus Mundus em Quaternario e Pré-História.Volume 1 e 2Este trabalho aborda a arte rupestre da Toca do Paraguaio (Piauí, Brasil) como o resultado de composições entre características morfo-técnicas universais. Estas características surgem de acordo com eixos morfo-técnicos interativos (morfologia e técnica), durante o processo de materialização das idéias, conduzido pelos autores. Esta tese buscou pela história morfo-técnica de 939 pinturas da Toca do Paraguaio, com o objetivo de identificar identidades, a partir das particularidades da história morfo-técnica que as pinturas demonstraram. Por meio da aplicação deste modelo, foi possível sugerir um mínimo de identidades que poderiam ter pintado o sítio. Na parte interpretativa das pinturas, foi identificada uma possível representação de cabana (a única em Capivara), bem como, pinturas que aparecem transportando objetos que poderiam ser interpretados como cerâmica ou cestaria. Considerando estas interpretações, foi possível sugerir um marcador cronológica para esses tipos de pinturas, de acordo com as idades estimadas para o surgimento dessas tecnologias na região. Este trabalho também contextualizou cronoestratigraficamente, os outros tipos de materiais encontrados no sítio, como as ferramentas líticas, os fragmentos cerâmicos, restos humanos, faunísticos e vegetais.
29
Moreault, Francis. "Le totalitarisme et le politique chez Hannah Arendt". Thesis, University of Ottawa (Canada), 1990. http://hdl.handle.net/10393/6015.
30
Piyasinghe, Lakshan Prageeth. "Dynamic Phasor Based Analysis and Control in Renewable Energy Integration". Scholar Commons, 2015. http://scholarcommons.usf.edu/etd/6015.
Abstract (sommario):
The objective of this dissertation is to carry out dynamic modeling, analysis and control of power systems with Renewable Energy Sources (RES) such as: Photovoltaic (PV) power sources and wind farms. The dissertation work is mainly focused on microgrid since it plays a major role in modern power systems and tend to have higher renewable power penetration. Two main theoretical concepts, dynamic phasor and impedance modeling have been adopted to model and analyze the power systems/mocrogrids with RES. The initial state calculation which is essential for small signal analysis of a system is carried out as the first step of the dissertation work. Dynamic phasor and impedance modeling techniques have been utilized to model and analyze power systems/micogrids as the second phase of the work. This part consists of two main studies. First case investigates the impedance modeling of Thyristor Controller Series Capacitor (TCSC) for sub-synchronous resonance (SSR) analysis where a wind farm is connected to a power system through series compensated line. Second case utilizes the dynamic phasor concept to model a microgrid in unbalanced condition. Here the unbalance is caused by a single phase PV connected to the microgrid. Third Phase of the dissertation work includes upper level control of the microgrid. Here prediction and optimization control for a microgrid with a wind farm, a PV system, an energy storage system and loads is evaluated. The last part of the dissertation work focuses on real time modeling and hardware in loop simulation test bed for microgrid applications.
This dissertation has led to four journal papers (three accepted, one submitted) and five conference papers.
31
Greinke, Russell E. "The Changing Lives Through Lliterature program for juvenile offenders". Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/6015.
Abstract (sommario):
Thesis (Ph.D)--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 March 11, 2008) Includes bibliographical references.
32
Al-Rmalli, Shaban W. "Arsenic and other trace elements in Bangladeshi food and non-food and their relationship to human health". Thesis, De Montfort University, 2012. http://hdl.handle.net/2086/6015.
Abstract (sommario):
It is estimated that over 30 million people are exposed to arsenic from drinking contaminated groundwater in Bangladesh. Furthermore, due to the use of contaminated water for irrigation purposes, arsenic and other toxic elements are entering the food chain of Bangladeshis. In this thesis, the total levels of toxic elements (As, Cd, Pb) and essential elements (Mn, Se, Zn) in 1,120 samples of Bangladeshi foods (including rice, vegetables, fish) and non-foods (betel quid and baked clay) imported into the United Kingdom were determined. From this analysis, it is concluded that Bangladeshis are exposed to high levels of toxic elements. Inorganic arsenic levels in Bangladeshi rice can be very high, especially from regions with high arsenic in groundwater. However, there is a lack of studies in the literature regarding arsenic levels in rice from regions in Bangladesh with relatively low levels of arsenic in the groundwater. Therefore, rice from one such region (Sylhet district) was analysed. The results indicated that boro (mean 71.7 µg/kg) and aman (mean 85.7 µg/kg) rice from Sylhet contained between 2 to 4-fold lower levels of arsenic, compared to other regions of Bangladesh thus far reported in the literature. Arsenic speciation was carried out on a selection of rice (aromatic and non-aromatic) from Sylhet region and this revealed 70% (mean value) as inorganic arsenic (AsIII and AsV), which is similar to rice grown in other regions of Bangladesh. Importantly, it was found that the arsenic levels of aromatic rice (mean 48.5 µg/kg) from Sylhet region was over 40% lower than that of non-aromatic rice (mean 81 µg/kg). The aromatic rice also contained higher levels of essential elements (such as Se and Zn). It was calculated that for an individual consuming 0.5 kg of rice per day, switching from consumption of non-aromatic rice to aromatic rice would increase Se and Zn intake by 46% and 23% respectively. Arsenic speciation was also carried out on other Bangladeshi food and non-food items, including fish, betel quid and baked clay, to obtain a better insight into exposure to toxic arsenic species. High levels of arsenic (range 3.8-13.1 mg/kg) and lead (range 21-26.7 mg/kg) were detected in the baked clay samples, which are consumed by some Bangladeshi women in an ancient practice known as geophagy. The efficiency of arsenic extraction from baked clay was 33% of the total arsenic present and the main arsenic species present was inorganic AsV (100%); AsIII was not detected in these samples. Millions of Bangladeshis chew betel quid and this contained predominantly AsIII species (extraction efficiency was 100%). Arsenic and lead intake from eating baked clay could exceed the provisional maximum tolerable daily intake (PMTDI) by 2- and 5-fold respectively. For the first time, arsenic speciation in Bangladeshi fish is reported. Hilsha, which is a very popular fish in Bangladesh, contained 2.55 mg/day (mean value) of total arsenic. Extraction efficiencies (%) were 59 – 89 for fish flesh, over 69% of arsenic present in the extract was dimethyl arsenic acid (DMA) species with about 11% arsenobetaine (AsBet) and 19% arsenosugar. These studies reveal that rice, betel quids and baked clay can be a significant source of exposure to inorganic arsenic and DMA in Bangladeshis. Exposure to cadmium is linked with kidney disease and over 20 million people in Bangladesh suffer from chronic kidney disease. Results obtained showed that the daily intake of cadmium by the Bangladeshi population from baked clay (mean 17 µg/day), rice (mean 18.6 µg/day) and certain leafy vegetables (mean 12 µg/day) was higher total daily intake compared to other countries. Surprisingly, puffed rice, which is commonly consumed by Bangladeshis, contained much higher levels of cadmium (mean 67.9 µg/kg) and lead (mean 98 µg/kg), compared to uncooked rice (cadmium, 37.2 µg/kg; lead, 18.9 µg/kg). This may be related to the illegal practice of using urea for whitening puffed rice in Bangladesh. Exposure to manganese in the Bangladeshi population through drinking water has been previously highlighted as a possible health problem, although the intake from foods and non-food has not been reported. The daily manganese intake by Bangladeshis was calculated to be 20.3 mg/day, which is higher than any other country in the world thus far reported. Betel quid components have high levels of manganese and this was reflected by higher urinary manganese the mean urinary Mn levels in chewers (1.93 µg/L, SD 1.8) was significantly higher (3.1 fold; P = 0.009) compared to non-chewers (0.62 µg/L, SD 0.4). Bangladeshi women who eat baked clay and chew betel quids are likely to be exposed to high levels of arsenic, lead and other toxic elements. This is particularly of concern for pregnant women as these metals can be transferred to the unborn baby through the placenta. For assessing the risk of exposure to toxic elements versus intake of essential elements from the same foods, a Food Toxicity Scale (FTS) was devised in order to identify foods that are beneficial or harmful. FTS values were obtained by calculating the toxic elements : essential elements ratio (As:Se, As:Zn etc) and the value obtained subsequently multiplied by toxic element concentration and the quantity of the particular food consumed per day. The higher the FTS value, the greater the risk of exposure to harmful elements. Rice and leafy vegetables had the highest FTS values, partly because large quantities of these foods are consumed. However, lentils and animal products (such as small fish) had relatively lower FTS values compared to other foods. Total daily intake of arsenic (306 µg/day), selenium (90.4 µg/day), cadmium (34.6 µg/day), lead (74.4 µg/day), manganese (20.3 mg/day) and zinc (11.2 mg/day) in the Bangladeshi population was calculated. The intake of arsenic and manganese exceeds the PMTDI for these elements. Water was the highest source of arsenic exposure in Bangladeshis followed by rice. For cadmium and lead, rice and leafy vegetables were the key contributors to the daily intake. The results presented in this thesis show that Bangladeshis are exposed to high levels of toxic elements and how modifications can be made to their diet to not only reduce their exposure to toxic elements but also increase the intake of essential elements. This could be achieved by a combination of the following: (i) reducing the intake of rice (by about 50%); (ii) switching to eating aromatic rice; (iii) increasing the intake of animal products (meat, fish etc.); (iv) decreasing the intake of certain leafy vegetables; and (v) stopping or reducing the practice of eating baked clay and chewing betel quid.
33
Camacho, José Roberto. "Steady-state analysis of directly connected synchronous machines and HVdc converters". Thesis, University of Canterbury. Electrical and Electronic Engineering, 1993. http://hdl.handle.net/10092/6015.
Abstract (sommario):
In this thesis the results from a conventional ac-dc load flow program for modelling the steady state behaviour of a unit connect salient-pole generator-converter are compared with those obtained from degree by degree dynamic simulation. The Transient Converter Simulation (TCS) program is used to give benchmark results. The unacceptable level of error from the load flow program indicates that the conventional ac-dc formulation is not directly applicable to the unit connected generator-converter.
A salient-pole generator converter model has been developed to reduce the errors, which allows for a voltage behind a varying sub-transient reactance to be used as the commutating voltage. The characteristics obtained from this model are better than for the conventional model but are still significantly different from the TCS results. A dynamic simulation of the operation of the unit connected generator converter is necessary, before steady state results can be obtained.
Unit and Group-Connections are also compared under varying steady state loading conditions and by reducing the number of generators in service in both schemes at nominal frequency.
An accurate algorithm of general applicability, called the Equivalent Inverter, is proposed which used unit-connection characteristics derived from a time domain simulation.
Finally the steady state model for an alternative unit connected generator converter scheme is presented. This is based on the use of dc ripple re-injection, which permits using a single bridge (instead of two) to obtain a twelve-pulse converter operation. The proposed scheme considerably reduces the number of transformers and converter bridges, without increasing the harmonic levels with respect to the double bridge configuration.
34
Spears, Victor L. "Terrain level of detail in first person-ground perspective simulations". Thesis, Monterey, California. Naval Postgraduate School, 2002. http://hdl.handle.net/10945/6015.
Abstract (sommario):
Approved for public release; distribution is unlimited.The Army Game Project at the Naval Postgraduate School is utilizing Epic's Unreal game engine to create a realistic first person infantry simulation. The project involves both indoor and outdoor spaces, including terrain datasets larger than normally supported by the Epic engine. While there has been extensive research relating to terrain rendering algorithms, they are unsuitable for this system due to hardware requirements, task limitation, or inefficient memory management. These limitations can be addressed by modifying the original terrain algorithm to include multiple levels of detail for complex terrain. This method raises new issues with projected textures, transparent textures, and multi-resolution rendering; therefore the implementation technique includes resolution for these concerns as well. The Epic world editor was also modified to enable world designers to control of these levels of detail. Performance tests have shown that this terrain level of detail system significantly improves display times, thereby allowing greater terrain complexity while maintaining interactive frame rates. Rendering times in environments with small terrains improved almost 40%, while large complex terrain environments (km2 at 1m resolution) fared even better.
35
Kanoun, Moez. "Conception d'un convertisseur temps-numérique dédié aux applications de tomographie optique diffuse en technologie CMOS 130 nm". Thèse, Université de Sherbrooke, 2014. http://hdl.handle.net/11143/6015.
Abstract (sommario):
La mesure de temps de vol de photons et/ou de temps de propagation d’ondes RF et ultra large bande est devenue une technique essentielle et indispensable pour de nombreuses applications telles qu’en géolocalisation en intérieur, en détection LASER et en imagerie biomédicale, notamment en tomographie optique diffuse (TOD) avec des mesures dans le domaine temporel (DT). De telles mesures nécessitent des convertisseurs temps-numérique aptes à mesurer des intervalles de temps très courts avec grande précision, et ce, à des résolutions temporelles allant de quelques picosecondes à quelques dizaines de picosecondes.
Les scanners TOD-DT ont généralement recours à des cartes électroniques de comptage de photons uniques intégrant essentiellement des convertisseurs temps-numérique hybrides (un mixte de circuits monolithiques et non-monolithiques). Dans le but de réduire le temps d’acquisition de ces appareils et d’augmenter leur précision, plusieurs mesures à différentes positions et longueurs d’ondes doivent pouvoir être effectuées en parallèle, ce qui exige plusieurs cartes de comptage de photons. L’implémentation de tels dispositifs en technologie CMOS apporte de multiples avantages particulièrement en termes de coût, d’intégration et de consommation de puissance.
Cette thèse apporte une solution architecturale d’un convertisseur temps-numérique à 10-bits dédié aux applications de TOD-DT. Le convertisseur réalisé en technologie CMOS 0,13 μm d’IBM et occupant une surface en silicium de 1,83 x 2,23 mm[indice supérieur 2] incluant les plots de connexion, présente une résolution temporelle de 12 ps sur une fenêtre de 12 ns pour une consommation en courant de 4,8 mA. Les avantages de l’architecture proposée par rapport à d’autres réalisations rapportées dans la littérature résident dans son immunité face aux variations globales du procédé de fabrication, l’indépendance de la résolution temporelle vis-à-vis de la technologie ciblée et la faible gigue temporelle qu’il présente.
Le circuit intégré réalisé trouvera plusieurs champs d’applications autres que la TOD notamment dans les tomographes d’émission par positrons, les boucles à verrouillage de phase numériques et dans les systèmes de télédétection et d’imagerie 3D.
36
Rafael, Gina Guedes. "LEITURA FEMININA NA SEGUNDA METADE DO SÉCULO XIX EM PORTUGAL: TESTEMUNHOS E PROBLEMAS". Master's thesis, Faculdade de Ciências Sociais e Humanas, Universidade Nova de Lisboa, 2011. http://hdl.handle.net/10362/6015.
Abstract (sommario):
TRABALHO DE PROJECTO APRESENTADO PARA CUMPRIMENTO DOS REQUISITOS NECESSÁRIOS À OBTENÇÃO DO GRAU DE MESTRE EM EDIÇÃO DE TEXTOO acesso à leitura, a escolarização e a consequente procura de informação abriram à mulher do século XIX, novas oportunidades e permitiram-lhe o acesso à vida pública, na medida em que deixou de estar circunscrita à esfera da família. Na promoção da melhoria educacional da população, usou-se a imprensa como meio de difundir ideias, de dialogar com os leitores, instaurando-se um novo tipo de relação entre o autor e o seu público, sendo que as mulheres fizeram parte deste novo público. E, estas mulheres tiveram a forte convicção de que deveriam usar a instrução e os jornais, a seu favor como um meio privilegiado de valorização social e intelectual. O presente trabalho de projecto pretende estudar a formação do público leitor feminino a partir da segunda metade do séc. XIX em Portugal, período caracterizado por uma grande preocupação da sociedade relativamente ao que as mulheres deveriam ler e qual o conteúdo mais apropriado para direccionar o acto de leitura. Fontes privilegiadas são os jornais Assembléa Litteraria, A Beneficencia e A Cruzada, A Voz Feminina, Ilustração Feminina, Opinião, etc., e outros que se entendam de relevância para o caso, não esquecendo as fontes históricas e literárias.
37
Flores, Luna Gladys Francisca. "Relación entre inteligencia emocional con el desempeño docente en aula del I ciclo, semestre 2012 - II, de la Facultad de Educación UNMSM - Lima". Master's thesis, Universidad Nacional Mayor de San Marcos, 2017. https://hdl.handle.net/20.500.12672/6015.
Abstract (sommario):
Explica la relación que existe entre la inteligencia emocional con el desempeño docente del I ciclo, semestre 2012-II, de la Escuela Académica Profesional de Educación Física de la Facultad de Educación de la Universidad Nacional Mayor de San Marcos Lima. El estudio es de tipo cuantitativo descriptivo, utilizando el diseño correlacional; se lleva a cabo un conjunto de actividades utilizando los conceptos teóricos básicos de la inteligencia emocional y el desempeño docente en aula, a través del muestreo no probabilístico se elige una muestra de 24 docentes y 132 estudiantes a quienes se les aplica mediante la técnica de la encuesta un cuestionario. Con la presente investigación se evidencia que entre la inteligencia emocional y el desempeño docente en aula existe una correlación positiva.Tesis
38
Carpeggiani, Elvis Antônio. "Determinação dos efeitos estáticos de torção em edifícios altos devidos à ação do vento". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2004. http://hdl.handle.net/10183/6015.
Abstract (sommario):
Em um ambiente típico de cidade, onde vários edifícios altos e outros tipos de edificações encontram-se agrupados em grande proximidade, cada edifício pode influenciar o campo aerodinâmico dos outros e, portanto, as forças do vento agindo sobre os outros ao seu redor. A influência da vizinhança em determinadas situações pode ser favorável, por exemplo, servindo como proteção à incidência direta do vento. Entretanto, há casos em que a ação do vento pode causar efeitos indesejáveis: picos de sucção localizados, aumento dos valores médios das forças cortantes, momentos fletores e momentos torçores atuantes na edificação. Este trabalho visou analisar a resposta torcional devida aos efeitos estáticos da ação do vento em modelos reduzidos ensaiados no túnel de vento, de diversas configurações arquitetônicas, simulando as principais características reais do escoamento em que a edificação está imersa. Os resultados experimentais obtidos nos ensaios foram comparados com estimativas teóricas indicadas nas normas brasileira, canadense e alemã, e por um trabalho de pesquisa realizado por Isyumov, no Canadá. A análise dos resultados demonstrou que a NBR-6123, na sua recomendação das excentricidades das forças de arrasto para cálculo do momento torçor, subestima a indicação para a excentricidade na situação de edificações isoladas, porém cobre a maioria dos casos na prescrição da excentricidade para a situação de prédios submetidos aos efeitos de vizinhança.
39
Singogo, Irene Miti. "Perinatal deaths in Lusaka, Zambia : mothers’ experiences and perceptions of care". Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/6015.
40
Srinivas, Bindignavile S. "Progressive image and video transmission with error concealment on burst error channels and lossy packet networks /". Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/6015.
41
Liu, Yunan. "Intermediary System Using Image Classification for Online Shopping". BYU ScholarsArchive, 2016. https://scholarsarchive.byu.edu/etd/6015.
Abstract (sommario):
Online shopping is becoming a popular option for consumers. Currently, the most common product searching method that online shopping websites provide is keyword search. Most shoppers have to carefully select relevant keywords to search for their favorite products. Finding desired products using a query image for online shopping is currently not available. Image has been used for searching similar images in the database but they are usually not well annotated. Research effort has been devoted to developing reliable image-based retrieval systems for applications such as medical image retrieval and trademark search. None of these developments focuses on improving online shopping experiences for consumers. This thesis reports the development of an image retrieval system to provide better online shopping experience for consumers. The system searches products with similar appearance such as shape and textures to the query images the user provides. Turn angle is a contour based shape descriptor. It has many unique properties that make it a perfect shape matching method for image retrieval. The best matching image has the shortest shape distance to the query shape. Turn angle, however, could fail with slightly stretched shapes. Dynamic programming is used to help turn angle match slightly deformed shapes. Another technique called centroid distance is also included as a restriction for shape matching in order to avoid retrieving irrelevant or disparate shapes. With a well-built database, the enhanced turn angle descriptor that includes dynamic programming and centroid distance is able to reach a high accuracy rate.Shape matching alone is usually not sufficient for a powerful retrieval system. Products with similar shape but very different textures will not be distinguished based solely on shape matching. Edge histogram is a robust shape descriptor for texture matching. It can be implemented to construct either global or local histogram for this purpose. Global edge histogram uses only 5 bins, which is simple but ignores detail texture information. Local and semi-global edge histograms are more complex but retains detail texture information. A hierarchical matching system is built to combine the shape and texture descriptors for better retrieval accuracy.Easy access to the shopping system is desired. An Android Application is developed to provide consumers a convenient and friendly tool to use the system. Grab cut is applied to the captured image to segment the object from the background. The segmentation provides the retrieval system the required contour information for shape matching. The Android Application submits the captured image along with the segmented contour to the server. After the retrieval process is completed, the server sends retrieved images of similar products back to the Android App for the user to consider. Using the retrieval system via a handheld device provides a user-friendly online shopping experience.
42
Wood, Justin Paul. "The cost of refraining from managing earnings when an industry-leading peer is reporting fraudulently". Diss., University of Iowa, 2017. https://ir.uiowa.edu/etd/6015.
Abstract (sommario):
In this study, I explore whether managers and firms are penalized when they face pressures to manage earnings, but chose not to do so. I use periods in which an industry-leading firm inflates earnings fraudulently, and in which the public is unaware of the fraud, as a setting where managers at industry peer firms face pressures to manage earnings. Using the Dechow et al. (2011) F-score, I identify two groups of industry peer firms: one group where firms show no evidence of having managed earnings in response to the industry leader’s fraud, and another group where firms do show evidence of having managed earnings in response to the industry leader’s fraud. I hypothesize that managers of firms in the first group face a penalty in terms of personal compensation, and that the firms they lead face an increase in the cost of equity, but not in the cost of debt.
I find evidence of a negative association between the decision to refrain from managing earnings and managerial compensation. However, I also observe declining compensation for managers who do manage earnings over the same period. This latter result precludes me from being able to entirely attribute the drop in compensation for the managers of the first group to the decision to refrain from managing earnings. I find that the cost of equity increases in the period of industry-leader fraud for firms that refrain from managing earnings, but the increase is statistically insignificant. The difference in the change in the cost of equity capital for these firms and for those who manage earnings is insignificant. The latter two results preclude me from being able to entirely attribute the increase in the cost of equity for firms in the first group to the decision to refrain from managing earnings. I find no evidence of changes in the cost of debt for firms in either group.
43
Thornburg, Mark S. "The Development and Validation of a System for the Knowledge-Based Tutoring of Special Education Rules and Regulations". DigitalCommons@USU, 1990. https://digitalcommons.usu.edu/etd/6015.
Abstract (sommario):
Research indicates that school officials fail to identify a relatively high proportion of school-aged children with behavioral or emotional handicaps. As a result, these children may not be receiving the special education services to which they are entitled. Multidisciplinary team members may be failing to identify these children because they lack understanding of special education rules and regulations. The purpose of this project was to combine the technologies of expert systems and mastery-based instruction to develop an inservice and preservice training program capable of producing mastery-level performance of the skills required to identify children with behavioral or emotional handicaps. Borg and Gall's ( 983) research and development cycle provided the model for developing, testing, and revising the program.
Prototype evaluations and large-scale field tests revealed that the program met its performance and user satisfaction objectives when administered under conditions of independent administration. However, a failure on the use and part of remote remote administrators to comply with prescribed program administration procedures allowed an unacceptable number of subjects to end training without completing all computer exercises. Attention to administration procedures contributed to the success of the project in meeting its performance and user satisfaction objectives in the final operational field test.
The positive findings of the project have implications on two levels. First, the findings are important for the positive effect they may have on the lives of children. Decision-making errors on the part of multidisciplinary team members can be costly to children with behavioral or emotional handicaps, as well as to other children. The evidence obtained in this project suggests that multidisciplinary team members can be trained to accurately identify children with behavioral or emotional handicaps.
On another, and perhaps more important, level, the findings have implications for the design of effective inservice and preservice training programs. The application of innovative technologies to inservice and preservice training problems does not necessarily result in the development of products capable of producing mastery-level decision-making performance. The positive results achieved in the present project suggest that those seeking to apply innovative technologies to inservice and preservice training problems take into account basic instructional design principles.
44
Hassan, Zaneera. "Metaproteomic Investigation of the Vaginal Microbiome in Pregnancy". VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/6015.
Abstract (sommario):
The development of early diagnostics and prevention strategies for preterm birth is an important global health challenge with the potential to impact over 15 million children annually, by improving health outcomes and reducing economic burden. Advances in microbial sequencing technology have opened the door to 16S rRNA gene survey, whole metagenomics, and whole transcriptomics, providing molecular evidence that the composition of the vaginal microbiome affects pregnancy outcomes in women, particularly those of African descent. A current gap in our molecular level understanding of the vaginal microbiome as it relates to healthy pregnancies is the metaproteome which comprises proteins from both the woman and colonizing microorganisms. Herein, I describe the development of a label-free mass spectrometry-based workflow for preparing and analyzing the vaginal metaproteome as sampled from vaginal swab extracts. The workflow was applied to two longitudinal cohorts of vaginal swab samples collected during the VCU MOMS-PI study. The work presented herein demonstrates for the first time that sufficient vaginal-specific biomaterial can be extracted from swabs for metaproteomics analysis as evidenced by high proteome coverage (>1790 human and >1609 microbial proteins), quantitative readouts for over 37% of identified proteins, and the identification of candidate protein biomarkers that change with gestational age and parturition status.
45
Evans, Jacqueline. "Strategies Insurance Leaders Use to Reduce Sales Agent Turnover". ScholarWorks, 2018. https://scholarworks.waldenu.edu/dissertations/6015.
Abstract (sommario):
High turnover of new sales agents costs insurance leaders millions of dollars and adversely impacts profit margins. The purpose of this multiple case study was to explore the retention strategies that insurance leaders from central New Jersey used to reduce sales agent turnover. Study participants included 5 insurance leaders with sales management experience ranging from 3 to 5 years. Job embeddedness theory was the conceptual framework for the study. Data were collected via semistructured interviews, company reports, and archival records. Using thematic analysis, the data were examined and coded and generated 4 key themes: recruiting and selection process; value of coaching, training, and mentoring; leadership engagement; and organizational culture. The implications of this study for social change include the ability of insurance leaders to allocate increased profits to funding local and community-based service organizations and philanthropic initiatives. Additionally, with increased profits, insurance leaders may be able to invest in developing indemnity products and services tailored for underserved populations, such as women, minorities, and low-income individuals and families, thereby contributing to positive social change.
46
Gasparetto, Gianluca <1990>. "Too Big to Fail". Master's Degree Thesis, Università Ca' Foscari Venezia, 2015. http://hdl.handle.net/10579/6015.
Abstract (sommario):
This thesis is about the Too Big To Fail problem, that is the financial firms that have been defined too large and that are so big that their failure could create problems for the whole economy. These too-big-to-fail institutions operated under an implicit government undertaking that, although it is a private business, in case of failure of their existence is guaranteed by the taxpayer through the Government who bailouts them.
After a short introduction to the problem and the history of where they come from (both American and European side), it will be presented the intellectual debate, which connects different views of this problem, in particular why they did it, in relation to a moral hazard problem.
Ignoring the colossal potential of creating conflicts of interest, regulators allowed the mega -banks to emerge because of industry’s insistence necessary that they were under new market conditions of global market integration and financial innovation. The supporters of conglomeration submitted that financial conglomerates created better returns for shareholders, due to economies of scale and efficiencies and diversification. Therefore, according to this view, consolidation strengthened the stability of financial institutions and thus the stability of the financial system.
The crisis has demonstrated the falsity of these reasons.
47
Forder, Lewis. "The time course of the influence of colour terms on visual processing". Thesis, University of Sussex, 2016. http://sro.sussex.ac.uk/id/eprint/60415/.
Abstract (sommario):
This thesis explores whether colour terms (e.g., “red”, “blue”, “purple”, etc.) influence visual processing of colour, and if so, the time course of any effect. Broadly, this issue relates to debate concerning whether language affects the way we perceive the world (i.e., the theory of linguistic relativity). Three of the experiments conducted used the event-related potential method (ERP), taking electrophysiological measurements of visual processing and visual cognition in human participants. The ERP provides high-resolution information about the timing of neural activity in the brain and can therefore be used to effectively investigate the time course of a potential influence of colour terms on visual processing. The first study, using a behavioural approach, identified that colour terms can influence the detection of colours and colour-associated objects suppressed from awareness by continuous flash suppression. The second study found that a cross-linguistic difference in colour lexicons affected a post-perceptual ERP component (the P2-N2 complex), but not sensory ERP components occurring early in visual processing. However, the third study found that differences in colour naming within a language do affect an early sensory ERP component (the P1). The final study used ERPs to identify a post-perceptual neural marker (in the posterior P2 component) for the unique ‘pure' hues (red, yellow, green, and blue), which had previously only been defined and identified linguistically. All of the studies provide evidence that colour terms affect colour processing, and the specific time course of this effect is identified as being task-dependent. These findings have implications for broader debate about the influence of language on visual cognition and perception.
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Туркот, О. А. "Щодо вдосконалення господарського законодавства відповідно до вимог Євросоюзу". Thesis, Ліра-К, 2015. http://essuir.sumdu.edu.ua/handle/123456789/60215.
Abstract (sommario):
Посилення захисту прав міноритарних інвесторів в Україні можна досягнути шляхом підвищення вимог до акціонерного товариства. Якщо будуть захищені права інвесторів, то будуть залучатися інвестиції в економіку нашої країни, що, у свою чергу, покращить інвестиційний клімат в Україні. Зазначені заходи координуються з умовами реалізації Угоди про асоціацію між Україною та ЄС, що позитивно впливає на динаміку її виконання.Increasing the protection of minority investors in Ukraine can be achieved by increasing demands for the company. If investors' rights will be protected, it will involve investment in our country, which, in turn, will improve the investment climate in Ukraine. These activities are coordinated with the terms of the implementation of the Association Agreement between Ukraine and the EU, which positively affects the dynamics of its implementation.
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Єпіфанов, Анатолій Олександрович, Анатолий Александрович Епифанов e Anatolii Oleksandrovych Yepifanov. "Перспективи розвитку фінансової освіти в умовах євроінтеграції". Thesis, Українська академія банківської справи Національного банку України, 2010. http://essuir.sumdu.edu.ua/handle/123456789/60915.
Abstract (sommario):
Розвиток ринкової економіки, реалізація інвестиційно-інноваційної
моделі функціонування суспільства та орієнтація на євроінтеграцію можуть
бути забезпечені за рахунок високого інтелектуального потенціалу нації.
Загальновідомо, що рівень розвитку вищої освіти, стан людського
капіталу, кваліфікація населення значною мірою впливають на соціально-
економічний розвиток держави. Світова практика свідчить, що понад 50 %
зростання ВВП на душу населення забезпечується підвищенням
продуктивності праці, освіченістю, кваліфікацією та фаховими навичками
громадян.
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Деревянко, Богдан Володимирович, Богдан Владимирович Деревянко e Bohdan Volodymyrovych Derevianko. "Щодо зміни законодавства у напрямі сприяння виробництву енергії з альтернативних джерел". Thesis, Десна Полиграф, 2015. http://essuir.sumdu.edu.ua/handle/123456789/60715.
Abstract (sommario):
В умовах змін у державі, у тому числі пов’язаних із приходом до Верховної Ради нових осіб, можна спробувати лібералізувати господарське, цивільне і податкове законодавство у бік надання дієвих податкових пільг та ефективного застосування засобів регулюючого впливу держави на діяльність суб’єктів господарювання, що названі у статті 12 Господарського кодексу України (зокрема державного замовлення, ліцензування, патентування, квотування, сертифікації, стандартизації, застосування нормативів та лімітів; регулювання цін і тарифів, надання інвестиційних, податкових та інших пільг, надання дотацій, компенсацій, цільових інновацій та субсидій). Також зараз вкрай важливою є власне популяризація застосування малим бізнесом та приватними особами вітро- та гідрогенераторів, сонячних батарей, інших приладів, систем та механізмів, призначених для виробництва та/або акумулювання енергії з альтернативних джерел. А це завдання повинні вирішувати громадські організації, торгово-промислові палати, наукові школи з різних галузей знань, окремі активісти і представники громадськості.A liberalized economic, civil and tax law towards granting tax exemptions effective and efficient use of regulatory impact on the activities of state to economic entities, that are called for in Article 12 of the Commercial Code of Ukraine, which the producers of energy from alternative sources.