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1
Tinsi, Laura. "Modeling and optimal strategies in short-term energy markets." Electronic Thesis or Diss., Institut polytechnique de Paris, 2021. http://www.theses.fr/2021IPPAG005.
Abstract:
Cette thèse vise à fournir des outils théoriques pour soutenir le développement et la gestion des énergies renouvelables intermittentes sur les marchés court terme de l'électricité.Dans la première partie, nous développons un modèle d'équilibre exploitable pour la formation des prix sur les marchés infrajournaliers de l'électricité. Pour cela, nous proposons un jeu non coopératif entre plusieurs producteurs interagissant sur le marché et faisant face à une production renouvelable intermittente. En utilisant la théorie des jeux et celle du contrôle stochastique, nous dérivons des stratégies optimales explicites pour ces producteurs ainsi qu'un prix d'équilibre en forme fermée pour différentes structures d'information et caractéristiques des joueurs. Notre modèle permet de reproduire et d'expliquer les principaux faits stylisés du marché intraday tels que la dépendance temporelle spécifique de la volatilité et la corrélation entre le prix et les prévisions de production renouvelable.Dans la deuxième partie, nous étudions des prévisions probabilistes dynamiques sous la forme de processus de diffusion. Nous proposons plusieurs modèles d'équations différentielles stochastiques pour capturer l'évolution dynamique de l'incertitude associée à une prévision, nous dérivons les densités prédictives associées et nous calibrons le modèle sur des données météorologiques réelles. Nous l'appliquons ensuite au problème d'un producteur éolien recevant des mises à jour séquentielles des prévisions probabilistes de la vitesse du vent, utilisées pour prédire sa production, et prendre des décisions d'achat ou de vente sur le marché. Nous montrons dans quelle mesure cette méthode peut être avantageuse comparée à l'utilisation de prévisions ponctuelles dans les processus décisionnels.Enfin, dans la dernière partie, nous proposons d'étudier les propriétésdes réseaux de neurones peu profonds agrégés. Nous explorons le cadre PAC-Bayesien comme alternative à l'approche classique de minimisation du risque empirique. Nous nous concentrons sur les priors Gaussiens et dérivons des bornes de risque non asymptotiques pour les réseaux de neurones agrégés. Ces bornes donnent des vitesses de convergence minimax pour l'estimation dans des espaces de Sobolev.Cette analyse fournit également une base théorique pour le réglage des paramètres et offre de nouvelles perspectives pour des applicationsdes réseaux de neurones agrégés à des problèmes pratiques de haute dimension, de plus en plus présents dans les processus de décision liés à l'énergie et impliquant des moyens de production renouvelable ou du stockageThis thesis focuses on providing theoretical tools to help in the development and management of intermittent renewable energy in short term electricity markets.In the first part, we develop a tractable equilibrium model for price formation in intraday electricity markets. For this, we propose a non cooperative game between several producers interacting in the market and facing an intermittent renewable production. Using stochastic control and game theory, we derive explicit optimal strategies for these producers as well as a closed form equilibrium price for different information structures and player characteristics. Our model allows to reproduce and explain the main stylized features of the intraday market such as the specific time dependence of volatility and the correlation between the price and the renewable production forecasts.In the second part, we study dynamic probabilistic forecasts in the diffusion framework. We propose several stochastic differential equation models to capture the dynamic evolution of the uncertainty associated to a forecast, derive the associated predictive densities and calibrate the model on real meteorological data. We then apply it to the problem of a wind energy producer receiving sequential updates of the probabilistic forecasts of the wind speed used to predict her production and make trading decisions in the market. We show to what extent this method can outperform the use of point forecasts in decision-making processes.Finally, in the last part, we propose to study the propertiesof aggregated shallow neural networks. We explore thePAC-Bayesian framework as an alternative to the classicalempirical risk minimization approach. We focus on Gaussianpriors and derive non-asymptotic risk bounds for theaggregated neural networks. These bounds yield minimaxrates of estimation over Sobolev smoothness classes.This analysis also provides a theoretical basis for tuning theparameters and offers new perspectives for applicationsof aggregated neural networks to practical high dimensionalproblems increasingly present in energy decision problemsinvolving renewables or storage
2
Garcelon, Evrard. "Constrained Exploration in Reinforcement Learning." Electronic Thesis or Diss., Institut polytechnique de Paris, 2022. http://www.theses.fr/2022IPPAG007.
Abstract:
Une application majeure de l'apprentissage machine automatisée est la personnalisation des différents contenus recommandé à différents utilisateurs. Généralement, les algorithmes étant à la base de ces systèmes sont dit supervisé. C'est-à-dire que les données utilisées lors de la phase d'apprentissage sont supposées provenir de la même distribution. Cependant, ces données sont générées par des interactions entre un utilisateur et ces mêmes algorithmes. Ainsi, les recommandations pour un utilisateur à un instant t peuvent modifier l'ensemble des recommandations pertinentes à un instant ultérieur. Il est donc nécessaire de prendre en compte ces interactions afin de produire un service de la meilleure qualité possible. Ce type d'interaction est réminiscente du problème d'apprentissage en ligne. Parmi les algorithmes dit en ligne, les algorithmes de bandits et d'apprentissage par Renforcement (AR) semblent être les mieux positionnés afin de remplacer les méthodes d'apprentissage supervisé pour des applications nécessitant un certain degré de personnalisation. Le déploiement en production d'algorithmes d'apprentissage par Renforcement présente un certain nombre de difficultés tel que garantir un certain niveau de performance lors des phases d'exploration ou encore comment garantir la confidentialité des données collectées par ces algorithmes. Dans cette thèse nous considérons différentes contraintes freinant l’utilisation d’algorithmes d’apprentissage par renforcement, en fournissant des résultats à la fois empirique et théorique sur la vitesse d’apprentissage en présence de différentes contraintesA major application of machine learning is to provide personnalized content to different users. In general, the algorithms powering those recommandation are supervised learning algorithm. That is to say the data used to train those algorithms are assumed to be sampled from the same distribution. However, the data are generated through interactions between the users and the recommendation algorithms. Thus, recommendations for a user a time t can have an impact on the set of pertinent recommandation at a later time. Therefore, it is necessary to take those interactions into account. This setting is reminiscent of the online learning setting. Among online learning algorithms, Reinforcement Learning algorithms (RL) looks the most promising to replace supervised learning algorithms for applications requiring a certain degree of personnalization. The deployement in production of RL algorithms presents some challenges such as being able to guarantee a certain level of performance during exploration phases or how to guarantee privacy of the data collected by RL algorithms. In this thesis, we consider different constraints limiting the use of RL algorithms and provides both empirical and theoretical results on the impact of those constraints on the learning process
3
Singh, Tanuj. "Development of a premixed burner integrated thermoelectric power generator for insect control." Thesis, Cardiff University, 2014. http://orca.cf.ac.uk/68407/.
Abstract:
Electrical power generation using hydrocarbons presents a huge potential owing to their higher power densities and environmental factors associated with lithium ion batteries. Small scale combustors have been widely developed and tested for power generation purpose employing Thermoelectrics and Thermophotovoltaic conversion of combustion heat into electricity. This thesis is concerned with development and investigation of a novel non-catalytic meso scale self-aspirating premixed burner integrated thermoelectric generator for a CO2 Generator device having its application in the insect control industry. Flame stabilisation has been one of the main issues in small scale combustion systems due to higher surface to volume ratio associated with small size of the combustor. Previous research has shown that catalytic combustion is one way of improving flame stabilisation, however employing a catalyst into the system increases the manufacturing cost which can be a significant downside. This research work studies flame stabilisation mechanisms in meso-scale burner which mainly focuses on Backward Facing Step or Sudden Expansion Step and secondary air addition into the combustion chamber. A 250 W premixed burner was developed which was classified as a meso scale burner whose operating parameters were in a range of micro-combustors whereas the size was comparatively bigger due to its integration with standard size thermoelectric modules. The first phase of the research was concerned with development of the burner which included optimisation of the design to achieve a stable enclosed premixed flame as per the design and operational requirements. It was found that flame blowoff can be prevented by addition of secondary air into the combustion chamber downstream of the step. The second phase of the research focused on the integration of the burner with thermoelectric power generators. This involved investigation of various configurations to optimise the electrical power output. The burner integrated thermoelectric unit was then tested in the actual field to validate the concept of integrating combustion and thermoelectrics for small scale power generation applications. The final phase of the research involved a study on the effect of secondary air addition on flame stabilisation in burners employing backward facing step. The minimum secondary air requirement for burner with different step heights was determined. The addition of secondary air cross-stream into the combustion chamber creates stable recirculation zone which reduces the local stream velocity and hence prevents flame blowoff.
4
Salleh, Noor Maya. "The role of emotions and emotional intelligence during merger of two banking institutions in Brunei." Thesis, University of Southampton, 2009. https://eprints.soton.ac.uk/68707/.
Abstract:
This study seeks to investigate the role of emotional intelligence in merger. Much of the existing literatures state that merger between organizations is a stressful event that affects the emotions of employees and thus have implication on the degree of support and attitudes towards merger. It is suggested that in changing circumstances such as merger, emotional ability could significantly assist individual employees to better deal with change, adapt to, and cope with changing surroundings. This study therefore used emotional intelligence as emotion-focused coping strategy to buffer negative emotional responses and to acquire positive attitudes towards merger. A two time points longitudinal study was conducted aimed to examine employees’ responses at four months post merger and ten months post merger. MSCEIT ability-based model measurement was used to measure the emotional intelligence of employees. Questionnaires were administered to obtain statistical data on the emotional responses, degree of support and attitudes towards merger. Qualitative data was also collected from interviews in order to tap first hand emotional responses of employees experiencing merger. At the same time emotional intelligence training was conducted in order to investigate whether emotional intelligence can be developed using training intervention. This study found relationships between emotional intelligence and degree of supports. This suggests that individual employees were more able to regulate their emotion and accept merger after ten months merger. The training intervention and Islamic culture could have influence the employees’ positive emotions and support for merger.
5
Børø, Siri. "Morphological Characterization of Descending Neurons and Determination of Output areas in the Brain of the Moth Heliothis virescens." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for biologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19036.
Abstract:
Knowledge on how an insect’s behavior changes in response to chemical substances in the environment can ultimately contribute to the development of biologically harmless pest controls. One of the links between sensory processing systems in the brain and motoric output is thought to be the neurons mediating the pre-processed information from the brain to act on motor circuits in the ganglia of insects. In the present study, the noctuid moth Heliothis virescens was the insect of study, and the thoracic ganglion of in total 88 preparations was stained with fluorescent dye to systematically study the descending neurons mediating information out of their brains. Performing mass-staining of the thoracic ganglion have contributed to knowledge on the areas where these neurons originates or projects. Visualizing the stained neurons in a confocal microscope showed condensed staining of dendrites of descending neurons in the anterior-ventral part of the lateral protocerebrum and in the lateral accessory lobes. Knowing that processing of chemosensory information might result in activities of behavioral relevance, it was especially interesting to see whether projection neurons making up the olfactory axis in the lateral protocerebrum overlapped spatially with dendrites of descending neurons eventually terminating in motor systems in the thoracic ganglia. Double staining of both the antennal lobe and the thoracic ganglion were therefore performed in the same individual, in 31 preparations. Three dimensional reconstruction and registration of descending neurons into the digital standard brain atlas (SBA) of H.virescens supported the spatial position of descending neurons in the anterior-ventral part of the lateral protocerebrum. The SBA containing the descending neurons was visually compared to a separate SBA containing the olfactory axis in the lateral protocerebrum, indicating no or minimal spatial overlap between the olfactory axis and the dendrites of descending neurons. This highlights the need for a detailed examination to discover if sensory information can be transferred to motor systems via 3rd order neurons local to the protocerebrum.
6
Carboni, Massimo. "Ripensare il finale: Un centro culturale per la ricomposizione dell'area del castello." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/6807/.
Abstract:
L'oggetto della tesi riguarda la riqualificazione dell'area attorno al Castello delle Rocche di Finale Emilia, attraverso l'introduzione di due nuovi edifici adibiti a biblioteca e centro civico.
Il tentativo è stato quello di ricomporre questo importante nodo urbano trasformandolo in una grande piazza della cultura che fa perno attorno al castello, ridandogli il giusto ruolo all'interno della scacchiera urbana, soprattutto a seguito degli eventi sismici del 2012 che hanno portato ad un suo parziale crollo.
I nuovi edifici cercano una relazione ed una definizione con la città e la sua storia, nel tentativo di inserirsi nella storia urbana di Finale in maniera più naturale possibile.
7
Rogers, Joan Elizabeth. "Fear of fiction : the authorial response to realism in selected works by Swift, Defoe, and Richardson." Thesis, Durham University, 1986. http://etheses.dur.ac.uk/6807/.
Abstract:
If Mrs. Whitehouse produced a pornographic play, it would arouse enormous interest, mainly because of Mrs. Whitehouse’s well known views on pornography. It is an ancient fact of English Literature that two of the best known pioneers of the English realistic novel, Daniel Defoe and Samuel Richardson, were Puritans. And there is an almost equally ancient critical tradition which traces the easy path of Puritan literature, in combination with other cultural forces, towards the production of realistic fiction. The central argument of this thesis is that there was no such easy path. Puritan autobiography was unrealistic in its very nature, while Puritan feeling towards fiction was hostile, with realistic, or verisimilar fiction provoking most hostility because the most deceitful. Thus the writing of a realistic novel was a radical departure for the Puritan, and one that was fraught with tension. It is this tension, or fear of fiction, and its effects on work of the two Puritan novelists, and that odd Anglican Jonathan Swift, that is the subject of this thesis. Swift joins Defoe and Richardson as an author with a special relationship with Defoe, and himself closer to a fearful anti- mimetic "tradition" than the comic tradition in which he is usually placed alongside Fielding and Sterne. Selected works of the three authors reveal their struggle with the intense problems that realism created for them, and their eventual 'solutions'. Hence by the time that Dr. Johnson made his famous critical statement against the fearful potential of realism in his fourth Rambler [31 March 1750), he was actually formalising material that had been well examined in the fiction under discussion, rather than beating an original critical path in response to Fielding's supposedly 'new' verisimilar form.
8
Pallas, Kenneth James. "The role of ACKR2 in inflammatory pathologies." Thesis, University of Glasgow, 2015. http://theses.gla.ac.uk/6807/.
Abstract:
Chemokines are a highly conserved family of chemoattractant cytokines that are key to the movement of cells around the body under both inflammatory and homeostatic conditions. Chemokines bind to seven transmembrane G protein coupled receptors that signal and induce cell movement upon ligand binding. As well as the ‘classical’ chemokine receptors, there also exists a family of atypical chemokine receptors that do not induce a canonical signalling response upon ligand binding. These atypical chemokine receptors (ACKR) have been shown to modify the chemokine response through processes such as the scavenging of inflammatory chemokines. One such receptor with this scavenging function is ACKR2 which has been shown to bind and internalise all of the inflammatory CC chemokines. The functional repertoire of ACKR2 continues to be expanded and it is now thought to have a role in inflammation, lymphatic drainage and lymphatic vessel development. It has been shown that the absence of this receptor results in impaired resolution of inflammation and, as a result, increased inflammatory pathologies in vivo. In models of skin inflammation a lack of ACKR2 has been shown to result in increased pathology and impaired inflammatory resolution. Multiple models of cutaneous inflammation, including excisional wound healing and chemically induced damage, were used to further investigate the role of ACKR2 in this context. Work on wound healing suggested that although ACKR2 appears to play no role in wound closure it does have a role in the formation of scar tissue in an excisional wound. Our data suggest that ACKR2 has a role in collagen deposition in developing and maturing scars. We also found that ACKR2 had a protective role in chemically-induced models of skin inflammation. We then looked at the role of ACKR2 in ocular inflammation. The main work performed in this section involved the use of the experimental autoimmune uveitis (EAU) model. Here we found that ACKR2 had a protective effective resulting in reduced pathology and infiltration of inflammatory leukocytes. This work also suggested, using in vitro analysis, that a human retinal pigmented epithelial cell line expresses functional ACKR2 protein and that our findings may be relevant to human disease. Finally we looked at the role of ACKR2 in the inflammatory autoimmune disease rheumatoid arthritis (RA). By taking samples of peripheral blood from RA patients we assessed the transcript levels of Ackr2 and correlated them with clinical measurements. Our findings suggested that, in patients with ‘well-controlled’ RA, there was an increase in the transcription of Ackr2 in peripheral blood leukocytes. Additional work using in vitro methods suggest that the hypoxic nature of the rheumatoid joint, and some of the drugs used to treat the disease, may increase the transcription of Ackr2. Overall the findings in this work suggest novel roles for ACKR2 in the skin and the eye. They also shed light on further environmental factors that may alter the local expression of ACKR2 in the rheumatoid joint. Taken together this work suggests that ACKR2 may have great therapeutic potential and, furthermore, this potential may be relevant to a wider range of tissues than previously thought.
9
Taylor, Carly. "Development and characterisation of mechanical and enzymatic models of cartilage degeneration." Thesis, University of Leeds, 2013. http://etheses.whiterose.ac.uk/6807/.
Abstract:
Currently, there is a gap between pharmacological treatment and joint replacement for the management of cartilage degradation diseases, such as osteoarthritis. It may be possible to use cartilage substitution materials to treat small defects in cartilage tissues, delaying the need for joint replacements, which have a limited lifetime in vivo, so are not suitable for many patients. A major barrier to the use of cartilage substitution materials is suitable in vitro testing of cartilage materials. Therefore mechanical and enzymatic models of cartilage degeneration were developed, which may be used to assess novel cartilage substitution materials. A single station pin-on-plate rig with a variable load was used to degrade the cartilage tissue of osteochondral pins and plates to produce two mechanical models of degradation denoted “mild” and “moderate”. A Ringer’s solution and serum based lubricant were chosen to hydrate cartilage tissues during articulation. The lubricants used during mechanical degradation were collected and analysed quantitatively for glycosaminoglycan (GAG) and collagen content. In addition, a method for isolating and imaging the cartilage wear particles in the lubricant was developed. A chondroitinase ABC enzyme was used to enzymatically degrade cartilage tissues. The mechanical and enzymatic degradation in the models was characterised using a broad range of mechanical and biological assessment techniques. The mechanical degradation and wear of the tissues created using the pin-on-plate rig was evaluated using cartilage height measurements, friction measurements, surface profilometry, histological and immunohistological staining, and quantitative biochemical assays. The wear on the surface of the tissue was observed using environmental scanning electron microscopy and the tissue ultrastructure was observed using transmission electron microscopy. The tissues degraded using chondroitinase ABC were analysed using indentation testing, histological and immunohistological staining, quantitative biochemical assays, and transmission electron microscopy. It was determined that an increased load used during pin-on-plate testing resulted in an increase in tissue degradation. Mechanical degradation under the “moderate” loading condition caused the surface of the cartilage tissue to become fibrillated and areas of tissue loss were observed. Under the mild condition the cartilage surface remained relatively smooth however, several small fissures were observed in some specimens. The surface of the tissue degraded under moderate conditions was significantly rougher than that degraded under the mild condition. There was a small loss of GAGs in the mild condition whereas a large volume of GAGs were lost from the tissue under the moderate condition, and the aggrecan network in the tissue was heavily disrupted. There was no significant difference between the friction measurements or the height measurements recorded for the specimens under the two variable loading conditions. Immunohistochemical staining for minor tissue components showed that collagen VI and cartilage oligomeric matrix protein (COMP) were not altered by the mechanical degradation, whereas a loss in biglycan was observed in specimens loaded under the moderate condition. It was observed that the serum lubricant may protect the cartilage tissue from degradation during articulation. An increased number of wear particles were observed in the lubricants recovered from the moderate loading condition tests. Digestion of tissues with chondroitinase ABC led to an increase in tissue deformation during indentation. The level of GAGs in the tissues was reduced and the GAGs associated with the aggrecan network in the tissue were no longer visible. Collagen VI and COMP were not significantly affected by chondroitinase ABC digestion, however biglycan staining was reduced at the superficial to middle zone of the tissue. The models produced have potential to be used in the assessment of novel cartilage substitution materials. The parameters used in this study will also be useful in the development of in vitro whole joint simulators.
10
Infantino, Angelo <1985>. "Advanced aspects of radiation protection in the use of particle accelerators in the medical field." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/6807/.
Abstract:
In this work, the well-known MC code FLUKA was used to simulate the GE PETrace cyclotron (16.5 MeV) installed at “S. Orsola-Malpighi” University Hospital (Bologna, IT) and routinely used in the production of positron emitting radionuclides. Simulations yielded estimates of various quantities of interest, including: the effective dose distribution around the equipment; the effective number of neutron produced per incident proton and their spectral distribution; the activation of the structure of the cyclotron and the vault walls; the activation of the ambient air, in particular the production of 41Ar, the assessment of the saturation yield of radionuclides used in nuclear medicine. The simulations were validated against experimental measurements in terms of physical and transport parameters to be used at the energy range of interest in the medical field.
The validated model was also extensively used in several practical applications uncluding the direct cyclotron production of non-standard radionuclides such as 99mTc, the production of medical radionuclides at TRIUMF (Vancouver, CA) TR13 cyclotron (13 MeV), the complete design of the new PET facility of “Sacro Cuore – Don Calabria” Hospital (Negrar, IT), including the ACSI TR19 (19 MeV) cyclotron, the dose field around the energy selection system (degrader) of a proton therapy cyclotron, the design of plug-doors for a new cyclotron facility, in which a 70 MeV cyclotron will be installed, and the partial decommissioning of a PET facility, including the replacement of a Scanditronix MC17 cyclotron with a new TR19 cyclotron.In questo lavoro, il codice Monte Carlo (MC) FLUKA è stato utilizzato per simulare il ciclotrone GE PETtrace (16.5 MeV) installato presso l’azienda ospedaliera “S. Orsola-Malpighi” (Bologna, IT), quotidianamente utilizzato per la produzione di radiofarmaci PET. Le simulazioni sono state effettuate per valutare diversi fenomeni e quantità d’interesse radiologico tra cui l’equivalente di dose ambientale nell’intorno dell’acceleratore, il numero di neutroni emessi per protone incidente e la loro distribuzione spettrale, l’attivazione dei componenti del ciclotrone e delle pareti del bunker, l’attivazione dell’aria interna al bunker ed in particolare la produzione di 41Ar, la resa a saturazione di radionuclidi d’interesse in medicina nucleare. Le simulazioni sono state validate, in termini di parametri fisici e di trasporto da utilizzare nel range energetico caratteristico delle applicazioni mediche, con una serie di misure sperimentali. Il modello MC validato è stato quindi applicato ad altri casi pratici quali lo studio di fattibilità della produzione diretta in ciclotrone di 99mTc, la produzione di radionuclidi ad uso medico con il ciclotrone TR13 (13 MeV) installato presso il centro di ricerca TRIUMF (Vancouver, CA), la progettazione completa del nuovo centro PET dell’ospedale “Sacro Cuore-Don Calabria” di Negrar (Verona, IT), incluso il ciclotrone ACSI TR19 (19 MeV), lo studio del campo di dose nell’intorno di un sistema di selezione dell’energia (degrader) di un ciclotrone per terapia, la progettazione di specifiche “porte a tappo” per un sito di produzione di radionuclidi ad uso medico, in cui verrà installato un ciclotrone da 70 MeV e sei diverse beam line, e per il parziale decommissioning di un centro PET e la sostituzione di un ciclotrone Scanditronix MC17 (17 MeV), attualmente installato, con una nuova unità TR19.
11
Dow, Eric Alexander. "Quantification of structural uncertainties in RANS turbulence models." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/68407.
Abstract:
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2011.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 69-70).
This thesis presents an approach for building a statistical model for the structural uncertainties in Reynolds averaged Navier-Stokes (RANS) turbulence models. This approach solves an inference problem by comparing the results of RANS calculations to direct numerical simulation. The adjoint method is used to efficiently solve an inverse problem to determine the RANS turbulent viscosity field that most accurately reproduces the mean flow field computed by direct numerical simulation. The discrepancy between the inferred turbulent viscosity and the turbulent viscosity predicted by RANS is modeled as a Gaussian random field. Finally, the uncertainty in the turbulent viscosity field is propagated to the quantities of interest. Results are first presented for turbulent flow through a straight channel. To model the uncertainty in more complex flows, the procedure is repeated for a collection of flows through randomly generated geometries.
by Eric Alexander Dow.
S.M.
12
Peng, Michael Yung. "System demonstration of an optically-sampled, wavelength-demultiplexed photonic analog-to-digital converter." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/68507.
Abstract:
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2011.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 84-86).
The performance of electronic analog-to-digital converters (ADCs) at high sampling rates is fundamentally limited by the timing jitter of electronic clocks. To circumvent this limitation, one method is to exploit the orders-of-magnitude lower timing jitter of mode-locked lasers and implement optical sampling as a front-end for electronic ADCs. The optical-sampling, wavelength-demultiplexing approach to A/D conversion, which is explored in this thesis, offers key benefits such as ease of scalability to higher aggregate sampling rates via passive wavelength-division demultiplexing (WDM) filters and potential for full integration via silicon photonics platform for chip-scale signal processing applications. This thesis will first cover the design issues for each stage in the optically-sampled, wavelength-demultiplexed photonic ADC architecture, followed by experimental results from two system demonstrations. Digitization of a 41-GHz signal with 7.0 effective bits at a sampling rate of 2 GSa/s was demonstrated with a discrete-component photonic ADC, which corresponds to 15 fs of jitter, a 4-5 times improvement over state-of-the-art electronic ADCs. On the way towards an integrated photonic ADC, a silicon chip with core photonic components was fabricated and used to digitize a 10-GHz signal with 3.5 effective bits. Drop-port transmission measurements of an integrated 20-channel WDM filter bank are included to show potential for high sampling rate operation with 10 effective bits.
by Michael Yung Peng.
S.M.
13
Mann, Roger P. (Roger Peabody). "Factory outlet centers--implications for development and investment." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/68307.
14
Miller, Trisha (Trisha Beth) 1976. "The greening of community development : an analysis of ecological restoration and neighborhood planning in the Fenway." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/68807.
Abstract:
Thesis (M.C.P.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 2001.Includes bibliographical references (leaves 78-81).
This thesis examines the relationship between the built and natural environment in the Fenway neighborhood of Boston, Massachusetts. Separate community planning initiatives to protect the urban watershed and promote a community development vision have improved the physical conditions of the Fenway neighborhood, but have failed to address long-term solutions to restoring a healthy and vibrant urban landscape. Drawing on the theory and practice of sustainable development, this study establishes a framework for analyzing community development and environmental protection issues. Moreover, it addresses the role of neighborhood institutions in forging non-traditional partnerships to meet a set of comprehensive planning objectives. The Fenway case study suggests the potential for two ostensibly independent grassroots efforts to form a more synergistic relationship, in order to promote the linkage between local environmental strategies and community development networks. It concludes by offering a set of recommendations for the Fenway Community Development Corporation and local environmental organizations based on a sustainable development approach to neighborhood revitalization.
by Trisha Miller.
M.C.P.
15
McDonald, Heather E. (Heather Elizabeth). "Beta-prototype of a rickshaw suspension system." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/68907.
Abstract:
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2011.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 64).
A suspension system was designed to make The Rickshaw Bank's bicycle-powered rickshaws more comfortable for the drivers. A four bar linkage with a rising rate spring was chosen as the design. An unconventional material-tire rubber-was used as the spring material because it is inexpensive, requires limited tooling, and is in vast supply near The Rickshaw Bank's factory in Assam, India. Different configurations of tire rubber were tested to see how the size, length, and placement of the spring affected the system's performance. Bode Plots of the system's response function were generated for each configuration. The functionality of the suspension system within the 10-20 Hz range was of premier importance because it is in this frequency range that the bicycle-powered rickshaws most often operate, based on their speed and the road conditions the rickshaw regularly encounters. Ultimately, it was demonstrated that the placement of the spring within the suspension system had the greatest effect on the system's response. The configuration that applied the greatest moment to the top link of the four bar linkage performed best. Surprisingly, any advantages arising from varying the geometry of the tire rubber pieces were lost to friction and the effect of the ply embedded in the tire rubber. In order to properly verify the optimal spring placement and tire rubber spring geometry, a suspension system that takes this paper's findings into account should be tested with a rickshaw in India.
by Heather E. McDonald.
S.B.
16
GARCIA, HUITRON MARIA GUADALUPE. "ANÁLISIS DE LA POLÍTICA MONETARIA EN MÉXICO UTILIZANDO UN OBJETIVO OPERACIONAL DE TASAS DE INTERÉS (1982 -2012)." Tesis de Licenciatura, UNIVERSIDAD AUTONOMA DEL ESTADO DE MEXICO, 2013. http://hdl.handle.net/20.500.11799/68007.
Abstract:
La importancia de la presente investigación se centra en analizar la efectividad de la tasa de interés interbancaria a un día como objetivo operacional del Banco de México para transmitir su postura de política monetaria en sustitución al “corto”. Retomando la metodología utilizada en el trabajo de investigación de Benavides y Capistrán (2010) a fin de explicar y analizar los últimos cuatro años de política monetaria en México. Y con ello, entender cómo la evolución de la instrumentación y conducción de la política monetaria de estos últimos treinta años (1982-2012), ha respondido a las diferentes condiciones que la economía mexicana ha presentado y particularmente el sistema financiero.
La hipótesis de este trabajo de investigación es comprobar y argumentar qué a través de un objetivo operacional de tasas de interés de corto plazo, Banco de México transmite de manera más fácil y efectiva su postura de política monetaria a la economía.
El trabajo de investigación está organizado en cuatro capítulos y en la sección final que resume las conclusiones del trabajo.
En el primer capítulo, se recopilarán los argumentos teóricos clave de la política monetaria y su conducción por parte del banco central, a fin de conocer y dar respuesta a las preguntas: ¿Qué es la política monetaria?, ¿Cuáles son sus objetivos y posturas?, ¿Quién la conduce?, ¿Cómo se lleva a cabo el mecanismo de transmisión?, ¿Cuáles son las estrategias de política monetaria?, ¿Cómo se instrumenta?, ¿Qué objetivos operacionales existen? y ¿Cuáles son los objetivos intermedios?, a fin de conocer cuáles son las herramientas más eficientes que un banco central tiene a su disposición para transmitir sus acciones de política monetaria y con ello contribuir en el crecimiento económico sostenido de una nación.
En el segundo capítulo, se describirá al Banco de México y su evolución en la instrumentación y conducción de la política monetaria a fin de alcanzar su objetivo de estabilidad de precios. Recopilando y documentando a grandes rasgos los
7
acontecimientos monetarios posibles, que crearon las bases para que el Banco de México transitara hacia un objetivo operacional de tasas de interés de corto plazo. Entre los que se encuentran; utilizar las operaciones de mercado abierto como instrumento de política monetaria en sustitución a las reservas obligatorias o “Encaje Legal”. Abandonar el esquema de agregados monetarios y adoptar el esquema de objetivos de inflación a niveles de 3+-1%. Así como describir el objetivo operacional de saldos sobre cuentas corrientes, objetivo mejor conocido como los “cortos” y su transición del régimen de saldos acumulados al régimen de saldos diarios.
En el tercer capítulo, se describirá la transición hacia el objetivo operacional de tasas de interés por parte de Banco de México, buscando dar respuesta a las interrogantes planteadas en el trabajo de investigación: ¿Por qué Banco de México decidió transitar de “cortos” hacia un objetivo de tasas de interés?, ¿Cuáles fueron las razones por la que decidió realizar dicha transición? y ¿Cuáles son las ventajas de haberlo adoptado? A fin de argumentar y describir porque un objetivo operacional de tasas de interés es más eficiente que los “corto” para transmitir la postura de Banco de México hacia la economía. Así como la descripción del mecanismo de transmisión de política monetaria actual.
Finalmente, en el cuarto capítulo se analizará la dinámica de la volatilidad de los diferentes canales de transmisión, realizando un ejercicio econométrico para encontrar la evidencia empírica de que sucede con estas variables bajo los dos objetivos operacionales de política monetaria: los “cortos” (1995-2008) y la tasa de interés interbancaria a un día (2008-2012). Usando diferentes pruebas econométricas, con el objeto de probar la hipótesis del trabajo de investigación: que a través del objetivo operacional de tasas de interés interbancaria a un día, el Banco de México transmite de manera más fácil y efectiva la postura de política monetaria a la economía.
17
VAZQUEZ, BERNAL MARLEM. "COMPARACIÓN DEL VALOR EN RIESGO (VaR) DE UN PORTAFOLIO COMPUESTO POR ACCIONES DEL ÍNDICE DE PRECIOS Y COTIZACIONES (IPC) vs OTRO PORTAFOLIO COMPUESTO DE ACCIONES DEL ÍNDICE MÉXICO (INMEX)." Tesis de Licenciatura, UNIVERSIDAD AUTONOMA DEL ESTADO DE MEXICO, 2014. http://hdl.handle.net/20.500.11799/68107.
Abstract:
El presente trabajo se compone de tres capítulos que se integran de la siguiente manera:
El primer capítulo describe la composición y función del sistema financiero mexicano, describiendo las instituciones, los diversos mercados que existen y los indicadores a comparar que son Índices de Precios y Cotizaciones (IPC) y el Índice México (INMEX).
El segundo capítulo se define lo que es riesgo y las variables que producen los diferentes tipos que existen de riesgo, así mismo se explica cómo se puede expresar en un número el riesgo; se da a saber que es un rendimiento y la relación de estas dos variables (riesgo/rendimiento). También se ven las metodologías que se utilizan para el cálculo del riesgo.
Y por último en el tercer capítulo se realiza el cálculo, comparación y análisis del valor en riesgo de los indicadores ya mencionados, describiendo la muestra y los componentes de cada uno de los índices.
18
Sánchez, Camacho Emili Fernanda, and Gómez Luis Daniel Velásquez. "EL SISTEMA DE JUSTICIA PENAL ACUSATORIO. RETOS Y PERSPECTIVAS." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2017. http://hdl.handle.net/20.500.11799/68207.
Abstract:
El presente trabajo de investigación, consiste y tiene como finalidad la de analizar, ¿Cuáles son los retos y perspectivas que enfrenta actualmente el “Nuevo Sistema de Justicia Penal Acusatorio, Adversarial y Oral” ?, teniendo como ámbito territorial el comprendido en el Municipio de Tenancingo, Estado de México, mismo que pertenece al XIII Distrito Judicial del Estado de México; esto en relación a las dificultades que enfrenta la implementación de un sistema de justicia penal oral en el Estado de México, a su vez se analizara que tan capacitados se encuentran los oficiales de las distintas instituciones policiacas que tienen lugar en el ya mencionado municipio, así mismo el enorme reto que representa contar con las instalaciones y el equipo necesario para que los servidores públicos que participan en este sistema de enjuiciamiento y de esta manera poder brindar a toda la ciudadanía que lo requiera una buena atención y garantizar que se cumplirán cabalmente con todos y cada uno de los principios establecidos en la legislación que rige la materia.
Por otro lado, se investigará cuáles son las mejores escuelas que ofrecen la Licenciatura en Derecho, cuáles son las mejores capacitadas para brindar a sus estudiantes y aspirantes, una educación de calidad y darles herramientas suficientes para hacer frente a los retos que la sociedad mexicana actualmente enfrenta.
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Lagunas, Cruz Jazmín. "Análisis de los Artículos 4.129 y 4.138 del Código Civil del Estado de México." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2017. http://hdl.handle.net/20.500.11799/68607.
Abstract:
En el presente trabajo se aborda el derecho a recibir alimentos a los hijos
menores de edad o mayores de edad que se dediquen al estudio, los
discapacitados, los adultos mayores, la cónyuge o concubina que se haya
dedicado cotidianamente al trabajo del hogar, consistente en tareas de
administración, dirección, atención y cuidado de la familia y el cónyuge o
concubina que se encuentre imposibilitado física o mentalmente para
trabajar, previa acreditación con la documentación idónea expedida por
una institución pública de salud, como lo establece el artículo 4.127 del
Código Civil del Estado de México.
20
Carrillo, Gallegos Mario Emilio, and Fernández Ernesto Espinosa. "Propuesta de organización en dependencias que integran el H. Ayuntamiento del municipio de Tezoyuca." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2018. http://hdl.handle.net/20.500.11799/68707.
Abstract:
La presente tesis aborda los problemas organizacionales básicos del Ayuntamiento de Tezoyuca en el periodo 2016-2018. Como Propuesta pretende aportar la solución a la falta de instrumentos que formalicen las funciones y perfiles de los recursos humanos que integran las principales dependencias municipales. El Ayuntamiento de Tezoyuca, dadas las características demográficas del municipio, ha resuelto la administración pública municipal mediante una estructura compacta que opera con dos claras contradicciones: por un lado, la indefinición de funciones provoca la ambigüedad y hasta la duplicidad operativa y, paradójicamente, persiste la concentración de funciones administrativas.
El presente trabajo de tesis está sustentado en la práctica profesional en el Ayuntamiento de Tezoyuca durante el año 2017. La experiencia permitió conocer las inconsistencias funcionales del gobierno local referido. El objetivo de este trabajo: es Diseñar manuales de organización de la administración del Ayuntamiento de Tezoyuca, mediante el análisis histórico-jurídico de las atribuciones municipales en función de los elementos que integran la estructura organizacional, para definir de ese modo funciones y perfiles individuales. En concreto, este trabajo propone una estructura organizacional a través de los manuales de organización, que permita optimizar las decisiones en dependencias del Ayuntamiento así como el mejor funcionamiento administrativo.
La investigación fue deductiva, operada mediante encuestas y entrevistas realizadas al personal que labora en la instancia Municipal. La secuencia de análisis fue comprender el funcionamiento de las organizaciones municipales, para contar con premisas de diseño aplicables a los manuales de organización a dependencias que integran el H. Ayuntamiento del Municipio de Tezoyuca. Las propuestas que este documento contiene permitirán al Ayuntamiento discutir y, en su caso, aprobar instrumentos administrativos basados en la normatividad vigente, permitiendo evitar la duplicidad de funciones.
Como contenido de este trabajo, el primer capítulo fue destinado al desarrollo de los conceptos fundamentales en el marco de la teoría de las organizaciones,
definiendo el sustento teórico como base del documento. El segundo capítulo presentó la reseña histórica de las Leyes Orgánicas Municipales en su proceso de reforma, así como las atribuciones de los Ayuntamientos en el Estado de México hasta la actualidad. El capítulo tercero constituyó un diagnostico a cada una de las dependencias administrativa en estudio, permitiendo con ello genera las bases para la propuesta de manuales de organización. En los capítulos 4, 5, 6 y 7 se desarrollaron los manuales de organización de las siguientes dependencias: Secretaria del Ayuntamiento, Tesorería, Desarrollo Urbano y Obras Públicas y Economía respectivamente. Como resultado es presentar una propuesta de organización que perfeccione las actividades que se desarrollan en una organización, y conseguir un resultado concreto, ante la falta de instrumentos administrativos, que formalicen las funciones y perfiles de los recursos humanos que integran cuatro dependencias municipales mencionadas con anterioridad del H. Ayuntamiento del Municipio de Tezoyuca.
21
VALLE, CRUZ DAVID 552419, and CRUZ DAVID VALLE. "Interacción dinámica entre Tecnologías Emergentes y Formas Organizacionales en Agencias Gubernamentales Municipales." Tesis de doctorado, Universidad Autónoma del Estado de México, 2017. http://hdl.handle.net/20.500.11799/68307.
Abstract:
El Gobierno Electrónico, Digital o Virtual (E-Gobierno) se ha conceptualizado como el uso de las Tecnologías de la Información y la Comunicación (TIC), aplicadas a la automatización de procesos (al interior de los gobiernos), con la finalidad de mejorar aspectos como la transparencia, la eficiencia, la interactividad, además de descentralizar a los gobiernos, así como disipar la corrupción. De manera que, la implementación de E-Gobierno, genera cambios en la organización, así como todo un proceso de innovación. El objetivo de la tesis es explicar el proceso de interacción dinámica entre las tecnologías emergentes y las formas organizacionales en agencias gubernamentales municipales, en el contexto del E-Gobierno de los ayuntamientos del Estado de México. Por tal motivo, se propone estudiar los efectos del uso de las tecnologías emergentes en agencias gubernamentales a nivel de los ayuntamientos del Estado de México desde una perspectiva dinámica y de ensamble, para contestar a las preguntas: ¿Cuáles son las tecnologías emergentes utilizadas por los gobiernos municipales del Estado de México? ¿Cómo interactúan las tecnologías emergentes, las formas organizacionales y sus resultados, en los gobiernos municipales del Estado de México? La investigación realizada en este trabajo sigue la metodología de estudio de caso embebido. Para realizar dicho estudio de caso se realizaron entrevistas semi – estructuradas a trece participantes de los ayuntamientos de Lerma, Toluca y Metepec, con la finalidad de recopilar datos cualitativos desde la perspectiva de la Teoría de la Promulgación de la Tecnología. Los resultados obtenidos sirven para triangular la información entre los entrevistados y los datos secundarios encontrados en estadísticas, informes, monografías y sitios web. Además, se propone una extensión del Marco de la Promulgación de la Tecnología por medio de un modelo de regresión lineal multivariable, que vincula los resultados del gobierno con la percepción ciudadana sobre los trámites y servicios en línea. Para lograrlo se diseñó y aplicó un instrumento de 43 ítems, a 156 ciudadanos, que evalúa la percepción sobre trámites y servicios de su E-Gobierno municipal. El instrumento evalúa cada ítem en una escala tipo Likert de 0 a 5 (0=no lo conozco, 1=pésimo, 2=malo, 3=regular, 4=bueno y 5=excelente). De manera que, se evalúan tres factores: 1) aspectos tecnológicos, 2) transparencia y acceso a la información, y 3) valor público. Ya que el E-Gobierno es un campo multidisciplinario dónde los estudios pueden abordarse desde diferentes puntos de vista. El trabajo de investigación se ubica en el área de las ciencias económico – administrativas, complementado por las ciencias políticas, y las tecnologías de la información. Debido a la complejidad del fenómeno de estudio: interacción dinámica entre tecnologías emergentes y formas organizacionales, es casi imposible replicarlo de forma completa y verdadera. Con respecto a las entrevistas, fue complicado acceder a los municipios y contactar a los funcionarios públicos, ya que en una parte del periodo de investigación hubo cambio de gobierno y algunos funcionarios no quisieron ser entrevistados. Por lo que, algunos de los contactos que se tenían al principio de la investigación se perdieron y no se pudo dar continuidad a las entrevistas. Los estudios en el ámbito de E-Gobierno, se han enfocado en políticas públicas, tecnologías, organización y resultados, pero es poco lo estudiado en el ámbito de la percepción ciudadana sobre los E-Gobiernos. Aunado a esto, este tipo de estudios son escasos en gobiernos municipales de países en desarrollo (ayuntamientos). La importancia de realizar estudios en el área de E-Gobierno en el contexto municipal, sirve para detectar buenas o malas prácticas útiles para gobiernos que comiencen a implementar determinado tipo de políticas en el ámbito de E-Gobierno. De manera que, el presente estudio tiene tres tipos de aportaciones: 1) teórica, pues se realiza una extensión del Marco de la Promulgación de la Tecnología para contrastar los resultados de los ayuntamientos con la percepción ciudadana, desde una visión de ensamble; 2) práctica, pues se estudian tres municipios con diferentes características y avances en el ámbito del E-Gobierno, que sirven de referencia para otros ayuntamientos; 3) técnica, pues se vislumbra el estudio de las tecnologías emergentes, como un mecanismo que transforma a los E-Gobiernos. Además, se diseñó un instrumento que evalúa la percepción ciudadana de su E-Gobierno. La contribución del trabajo para las ciencias económico – administrativas consiste en realizar un estudio en el ámbito de las organizaciones gubernamentales, pues gran mayoría de los estudios se ubican en el sector privado. Además, se estudia a la innovación gubernamental en ayuntamientos del Estado de México, por medio de la implementación de tecnologías emergentes en el E-Gobierno.
22
TORRES, GONZALEZ NUBIA 634747, and GONZALEZ NUBIA TORRES. "Configuración de la imagen y satisfacción corporal en el adolescente." Tesis de maestría, Universidad Autónoma del Estado de México, 2017. http://hdl.handle.net/20.500.11799/68507.
Abstract:
La imagen corporal es un constructo multidimensional que implica tres componentes: perceptual, cognitivo- afectivo y conductual, se define como la representación mental del cuerpo que el individuo construye de sí mismo, por lo que se parte de la premisa que la apariencia y más concretamente la percepción que el individuo tiene con respecto a su cuerpo, los pensamientos y emociones que éste le generen, involucran experiencias de placer-displacer, satisfacción - insatisfacción, aspectos que determinan de manera importante sus relaciones personales y múltiples aspectos en su vida. Las alteraciones de la imagen y la insatisfacción corporal juegan un papel importante en la predicción de problemas de salud, especialmente en los relacionados con los trastornos de la conducta alimentaria; además se ha asociado a otros problemas de salud mental como trastornos afectivos, conductas sexuales de riesgo, ideación suicida, entre otros. El objetivo de la investigación consistió en comprender la configuración de la imagen y satisfacción corporal de los adolescentes a partir de sus experiencias de vida, se abordó desde una metodología cualitativa, a través del uso de la entrevista a profundidad, la población de estudio consistió en 14 adolescentes de 15 a 18 años de edad. Los resultados indican la importancia que tiene la insatisfacción corporal como un elemento inherente en el desarrollo de la imagen corporal, observándose ambivalencia en la forma en la que los adolescentes percibían su apariencia física, siendo el estado de ánimo el mecanismo regulador en la presencia de estados de satisfacción e insatisfacción corporal.
23
岩本, 武和. "ケインズと世界経済." 京都大学, 1999. http://hdl.handle.net/2433/68507.
24
王, 志英. "命令・依頼表現における中国語と日本語の対照研究." 京都大学, 2001. http://hdl.handle.net/2433/68807.
Abstract:
Kyoto University (京都大学)0048
新制・課程博士
博士(人間・環境学)
甲第9037号
人博第130号
12||132(吉田南総合図書館)
新制||人||31(附属図書館)
UT51-2001-F367
京都大学大学院人間・環境学研究科人間・環境学専攻
(主査)教授 内田 賢徳, 教授 山梨 正明, 助教授 東郷 雄二, 教授 平田 昌司
学位規則第4条第1項該当
25
Plön, Stephanie, Victor Gavin Cockcroft, and Pierre William Froneman. "The natural history and conservation of Indian Ocean Humpback Dolphins (Sousa plumbea) in South African waters." Academic Press, 2015. http://hdl.handle.net/10962/68207.
Abstract:
Publisher versionAlthough most knowledge on the biology of Sousa plumbea has primarily come from South African waters, a number of research gaps remain on the natural history and status of the species in the region. Research on two populations in South African waters for which some historical data exist may aid in highlighting long-term changes in the biology and natural history of this little known coastal delphinid. Recent studies on the age, growth and reproduction of animals incidentally caught in shark nets in Richards Bay, KwaZulu-Natal, yielded a lower maximum age estimate of 24 (previously 46) growth-layer-groups (GLGs), sexual maturity of 7.5 and 8 GLGs in males and females (previously 12–13 and 10 GLGs, respectively), an ovulation rate of 0.2 and a 5-year calving interval (previously 0.3 and 3-year calving interval) than previously reported. These differences may be due to a difference in the interpretation of GLGs between observers or a predominance of young males being caught in the shark nets. Stomach content analysis revealed a change in the relative proportions of the main prey items over the past 25 years, but no difference in species richness or diversity was found between the sexes. No change in trophic level was recorded between 1972 and 2009. Field studies in Algoa Bay, Eastern Cape, conducted 16 years apart indicated a decline in the mean group size (from 7 to 3 animals), a decline in the maximum group size (from 24 to 13 animals), an increase in solitary individuals (15.4–36%), and a change in behaviour from predominantly foraging (64–18%) to mainly travelling (24–49%). The observed changes are suggestive of a change in food availability, resulting in a range shift or a potential decline in numbers. These studies indicate the importance of long-term studies to monitor population changes and their possible causes. A number of threats, such as shark nets, pollution (noise and chemical), and coastal development and disturbance, to the humpback dolphin populations in South Africa have been identified. Urgent action is required to ensure continued existence of the species in South African waters.
26
Larrivée, Marie-Ève. "Jeunes hommes sédentaires : effets d'une mesure ambulatoire (Fitbit) et d'un suivi en kiésiologie et en nutrition sur le niveau d'activité physique, la motivation et la satisfaction de vie." Master's thesis, Université Laval, 2021. http://hdl.handle.net/20.500.11794/68407.
Abstract:
L’objectif de la présente étude était de comparer les impacts de l’utilisation de la montre Fitbit seule avec l’utilisation de la montre Fitbit accompagnée d’un suivi en kinésiologie et en nutrition sur l’activité physique, la motivation et la satisfaction de vie d’hommes sédentaires. Seize hommes sédentaires âgés de 19 à 35 ans (Mâge = 26,9 ans; ÉT = 4,1) ont été répartis aléatoirement dans l’un des deux groupes suivants : G1) montre Fitbit (n = 8); G2) montre Fitbit + suivi en kinésiologie et nutrition (n = 8). Ils ont été évalués avant et immédiatement après l’intervention (60 jours entre les deux périodes) ainsi que six mois après l’intervention. Ils ont rempli le Questionnaire sur l’Activité physique récente (RPAQ), le Questionnaire de motivation à pratiquer une activité physique 2 (BREQ-2) ainsi que l’Échelle de satisfaction de vie (SWLS). L’ensemble des participants a démontré quelques améliorations statistiquement significatives dans le temps en matière d’activité physique, soit par la diminution du temps passé assis ainsi que l’augmentation de la fréquence d’activité physique et du temps passé actif. Nous n’avons remarqué aucune différence statistiquement significative à l’Index d’autonomie relative (IAR). Finalement, il a été possible d’observer une certaine stabilité de la satisfaction de vie chez les deux groupes du temps 1 au temps 3. Quoiqu’il faille être prudent dans la généralisation de ces résultats préliminaires à la population générale, cette étude réitère l’importance d’évaluer la pertinence de l’utilisation d’un outil ambulatoire comme la montre Fitbit en combinaison avec un suivi en kinésiologie et en nutrition.The objective of this study was to compare the impact of using only a Fitbit watch with using a watch as well as receiving counselling in kinesiology and nutrition on motivation, physical activity, and life satisfaction. Sixteen sedentary men aged 20-35 (mean: 26.9 ± 4.1 years) were randomly assigned to one of two groups: G1) Fitbit only (n = 8); G2) Fitbit + counseling (n = 8). They were evaluated before and after the 60-day intervention as well as six months later (follow-up). They completed the Recent Physical Activity Questionnaire (QAPR), the Behavioral Regulation in Exercise Questionnaire 2 (BREQ-2) and the Satisfaction with Life Scale (SWLS). Participants demonstrated significant improvements in regards to physical activities (lower sitting time, higher level of physical activity (time and frequency)). However, there are no statistically significant differences in self-determination between or within groups (over time). Finally, some stability of life satisfaction over time for both groups was observed. Besides, it is important to be cautious when generalizing these results to the general population. The relevance of using ambulatory devices as Fitbit within kinesiological and nutritional counselling is discussed.
27
Ballester, Bordes Mª José. "LA INTERVENCIÓN EN EL PATRIMONIO ARQUITECTÓNICO DE LA MODERNIDAD. Estudio de la reconstrucción de los pabellones de exposición españoles." Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/68507.
Abstract:
[EN] The valorization of ruin works of modernity, keep them as have come to us is not the majority choice, performing interventions generally opt for a return to the origin.
The enhancement of the architectural heritage of the twentieth century is recent. Although at present, the international architecture icons appear protected, it is emerging preservation of these works, being in many cases outside the institutional shelter. It is important to recognize the eff orts to revalue this architecture and therefore preserve it and protect it. It is proposed objective of this work to study the criteria by which the intervention is governed works of modernity and establish whether they are the same as those used to intervene in the historical architecture or, conversely, are specific to these works. Investigate the causes of this specificity and if these are established around the differences that may exist regarding the historical architecture in their construction, materiality, aging, temporality, fragility, social value, representativeness ... etc.
These assumptions make the protection and conservation of this heritage resulting from a specificity that does not share the pre- twentieth-century heritage works and therefore the criteria to apply for preservation may be different.[ES] La puesta en valor de la ruina en obras de la Modernidad, conservarlas tal y como han llegado hasta nosotros no es la opción mayoritaria, realizándose en general intervenciones que se decantan por una vuelta al origen. La puesta en valor del patrimonio arquitectónico del s.XX es reciente. Aunque en la actualidad, los iconos de la arquitectura internacional parecen protegidos, es incipiente la preservación de estas obras, quedando en muchos casos fuera del resguardo institucional. Es importante reconocer los esfuerzos realizados para revalorizar esta arquitectura y por lo tanto preservarla y protegerla. Se propone como objetivo de este trabajo estudiar los criterios por los que se rige la intervención en obras de la Modernidad y establecer si son los mismos que los utilizados para intervenir en la arquitectura histórica o, por el contrario, son específicos para estas obras. Indagar las causas de esa especificidad y si éstas se establecen en torno a las diferencias que pueden existir respecto a la arquitectura histórica en cuanto a su construcción, materialidad, envejecimiento, temporalidad, fragilidad, valoración social, representatividad, etc. Estas premisas hacen que la protección y conservación de este patrimonio resulte de una especificidad que no comparte las obras patrimoniales anteriores al s.XX y por lo tanto, los criterios a aplicar para su conservación pueden resultar diferentes.
[CAT] La posta en valor de la ruïna en obres de la Modernitat, conservar-les tal com han arribat fi ns a nosaltres no és l'opció majoritària, realitzant-se en general intervencions que es decanten per una tornada a l'origen. La posada en valor del patrimoni arquitectònic del s.XX és recent. Encara que en l'actualitat, les icones de l'arquitectura internacional semblen protegits, és incipient la preservació d'aquestes obres, quedant en molts casos fora del resguard institucional. És important reconèixer els esforços realitzats per revaloritzar aquesta arquitectura i per tant preservar-la i protegir-la. Es proposa com a objectiu d'aquest treball estudiar els criteris pels quals es regeix la intervenció en obres de la Modernitat i establir si són els mateixos que els utilitzats per intervenir en l'arquitectura històrica o, per contra, són específics per a aquestes obres. Indagar les causes d'aquesta especificitat i si aquestes s'estableixen al voltant de les diferències que poden existir respecte a l'arquitectura històrica pel que fa a la seva construcció, materialitat, envelliment, temporalitat, fragilitat, valoració social, representativitat, etc. Aquestes premisses fan que la protecció i conservació d'aquest patrimoni resulti d'una especifi citat que no comparteix les obres patrimonials anteriors al s.XX i per tant, els criteris a aplicar per a la seva conservació poden resultar diferents.
Ballester Bordes, MJ. (2016). LA INTERVENCIÓN EN EL PATRIMONIO ARQUITECTÓNICO DE LA MODERNIDAD. Estudio de la reconstrucción de los pabellones de exposición españoles [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/68507
TESIS
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Титова, С. М. "Разработка технологии сорбционного извлечения урана из сульфатно-хлоридных растворов скважинного подземного выщелачивания : автореферат диссертации на соискание ученой степени кандидата технических наук : 05.17.02." Thesis, б. и, 2019. http://hdl.handle.net/10995/68407.
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Forlano, Penelope. "Making Custodians: A design anthropology approach to designing emotionally enduring built environment artefacts." Thesis, Curtin University, 2018. http://hdl.handle.net/20.500.11937/68407.
Abstract:
My doctoral research through creative production takes a Design Anthropology approach to examine the person-object relationship typical of artefacts with long-term attachment and significance. I then speculate on the implications of these findings with the goal of designing enduring new built environment artefacts, surfaces, and furniture. The exegesis explores the context of this enquiry within design theory and practice and its significance, given the environmental impact of high levels of premature disposal and ‘fast’ consumption.
30
Moral, Andrés Fernando. "Oteiza, arquitectura como desocupación espacial." Doctoral thesis, Universitat Politècnica de Catalunya, 2007. http://hdl.handle.net/10803/6807.
Abstract:
Jorge Oteiza Embil (Orio, 1908 - San Sebastián, 2003) diseñó diferentes intervenciones en el campo de la arquitectura. Cronológicamente llegamos a encontrar cerca de 25 operaciones de diferente orden y planteamiento. En 1958 - 1959 realiza, junto con el arquitecto Roberto Puig Álvarez, el Proyecto para el Monumento a José Batlle y Ordóñez en Montevideo. La Tesis comprueba cómo Oteiza se implica en la intervención con gran intensidad, revelando, a través del Monumento, importantes parámetros para entender su concepción del espacio. Éste es el componente principal de cualquier construcción arquitectónica.Este memorial nos llevará a explorar una parte de la compleja producción que desarrolló Jorge Oteiza. La localización de toda la documentación existente es una tarea prioritaria con el fin de poder trabajar con los datos reales. Los archivos corroboran la problemática que implica conocer este proyecto: Uruguay, Francia y España son los puntos donde encontraremos el Monumento. Desde esta plataforma podemos descubrir la obra en verdadera magnitud. El estudio de la misma se hará con instrumentos específicos de la arquitectura como el dibujo y también con el procesado de todas las imágenes y escritos vinculados con el tema.
La Tesis se estructura en 5 partes, 2 vinculadas con el proceso documental y 3 con la comprensión e interpretación del proyecto. Estas últimas nos conducirán por la obra y todo lo que gravita sobre la misma:
.-"el Objeto": un proyecto destinado al homenaje del ex-presidente uruguayo José Batlle y Ordóñez, con una localización ubicada en el Parque Rodó de Montevideo. Un Concurso, anómalo en su desenlace que convocó a 74 propuestas de 25 países. Un trabajo, de Oteiza y Puig articulado con tres elementos de geometría radical y con la intención de generar un espacio espiritual. Una propuesta que emplea el vacío como principal instrumento de construcción arquitectónica.
.-"el Proceso": los trabajos previos empleados en su definición. El manifiesto - memoria como postura ante el arte en general y ante la arquitectura en particular. Las esculturasesbozos que sirvieron para estudiar diferentes relaciones entre las partes y el todo de la propuesta. Los proyectos-bocetos que concentraron diferentes intereses y sistemas compositivos con anterioridad al empleo de los mismos en el Monumento. Todo ello supone un conjunto de claves que nos muestran el sistema creativo que pudo sustentar la intervención uruguaya.
.-"el Paisaje": que implica una actividad reflexiva y operativa sobre el mismo. Se estudia la composición del mismo en su partes primigenias. Se valora el proceso de integración y relación de las obras con el medio. Se analiza el destino de las mismas: el hombre, como razón última de toda actuación y que supondría una transformación social.
El desarrollo secuencial utilizado, desde lo singular del ejemplo, hasta lo general del ideario, busca ascender y consolidar cada uno de los niveles de conocimiento al tiempo que se establece una lectura transversal sobre el trabajo del oriotarra en este campo.
El conjunto de todo ello nos hará profundizar más sobre el espacio y su definición a través de Oteiza, lo que nos sitúa ante un proceso transcendente y abierto: "La verdadera transcedencia espiritual de un arte nuevo y original es la verdadera creación estética: la desocupación espacial". (Jorge Oteiza)
ABASTRACT
Jorge Oteiza Embil (Orio, 1908 - San Sebastián, 2003) designed various interventions in the architecture field. Chronologically we could find about 25 operations of different level and planning. He designs in 1958-1959, together with the architect Roberto Puig Alvarez, the Project for The Monument to José Batlle y Ordóñez in Montevideo. The thesis certifies the way Oteiza highly implicated himself in the intervention, revealing through the monument important parameters that help understand his conception about space. This is the main component of any architectural construction.
The memorial will lead us to explore part of the complex production developed by Jorje Oteiza. Locating all the existing documents was a priority task in order to work with the real information. Understanding this project implicates problems that gather together in several archives: Uruguay, France and Spain, are the places where we will find The Monument. From this platform we are able to discover the work at the real scale. For the study we will use architectural specific tools as the drawings and we will also process all the related images and texts.
The thesis structure is formed by 5 parts, 2 of them linked to the documentation process and the other 3 related to the project comprehension and interpretation. These last 3 chapters will lead us through the work and work-connected areas of influence:
.-"the Object": a project meant to be a tribute for the ex-president of Uruguay José Batlle y Ordóñez, located in the Rodó Park of Montevideo. An anomalous ending competition called 74 designs from 25 countries. The Oteiza and Puig project articulates itself by the means of three elements with radical geometry and the intention of generating a spiritual space. It is a project that uses the empty space as the main tool for architectural construction.
.-"the Process": the previous work employed for its definition. Manifesto - memory as an attitude towards art in general and towards architecture in particular. The sketchsculptures were used for studying different relations between the parts and the whole of the proposal. The outline-projects concentrated various interests and composition systems before their utilization in The Monument. All this mean a set of keys showing us the creating system that supported the Uruguayan intervention.
.-"the Landscape": that implicates a reflective and operating activity. The composition it is being studied on its original parts. The integration process and the relationship between the works and the environment are being valued. The works assignment it is being analyzed: the human being, as the final reason of any action, meaning a social transformation. The sequential development used, from the singularity of the example to the generality of the ideology, is ascending and consolidating every one of the knowledge levels meanwhile a cross lecture of the architect work in this field is set. The whole discussion will help us deepen on the space and its definition according to Oteiza, setting us in front of a transcendental and open process: "The true spiritual transcendence of a new and original art is the true esthetical creation: the spatial clearance". (Jorge Oteiza)
31
Brown, Aaron Thomas Ryan. "Freshwater Wetland Creation in a Changing Urban Environment: Designing for Long-Term Viability." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/6807.
Abstract:
Urbanization and wetland mitigation are increasingly common in coastal watersheds with expanding populations. These mitigation wetlands are intended to offset the functional and structural losses experienced when natural systems are degraded or destroyed. In the Tampa Bay watershed, urbanization is both expanding into the upper reaches of the watershed and intensifying in previously-developed areas, resulting in the creations of hundreds of freshwater mitigation wetlands. This dissertation utilized an existing database of mitigation wetlands, publicly available data, and field surveys to investigate the relationship between constructed wetlands and their surroundings and also determine how design affects wetland condition over time. The overarching goals of this dissertation were to evaluate the geospatial distribution and areal extent of constructed freshwater mitigation wetlands in Hillsborough County and determine how they influence the landscape; evaluate design variables and environmental factors influencing constructed wetland trajectories; and determine how future changes to the landscape will likely affect constructed wetland systems.
The goals of Chapter 2 were to evaluate the relationship between mitigation wetland construction and total freshwater wetland area; determine if forested and non-forested wetlands are being impacted/mitigated at similar rates; determine if wetland mitigation is offsetting impacts from increased urbanization at the landscape scale. This study concluded that since 1985, permitted impacts of non-forested wetlands have occurred at a significantly greater annual rate than forested systems, despite their smaller regional footprint. Interestingly, this increased impact frequency, combined with mitigation ratios greater than 1:1 (mitigation to impact area), have helped decrease proportional difference in area between forested and non-forested wetlands in the region. Over the period of the study, mean LDI scores for drainage basins across watershed have increased, with those containing mitigation projects significantly increasing compared to those without. Changes in drainage basin LDI were significantly correlated to the number of mitigation projects per basin, total impact area, and total mitigation area. Upward shifts in drainage basin LDI categories have been documented in 25 of Hillsborough County’s 184 basins, however no significant connection to permittee-responsible freshwater wetlands was established. These results imply that current mitigation practices are failing to ameliorate increasing development intensity at the landscape scale.
The goals of Chapter 3 were to determine the current condition of created freshwater mitigation wetlands in Hillsborough County, Florida; determine if forested and non-forested wetlands maintain similar trajectories after release; and evaluate how design and changes in the landscape influence created wetland condition over time. Original wetland engineering plans and historical data were used to establish baseline conditions at the time of wetland “release” and track wetland changes over time. A chronosequence approach was utilized to determine wetland trajectories and analyze potential differences between forested and non-forested systems. This study found that surveyed freshwater wetlands had decreased in size from their intended area by a total of approximately 18%, but due to increased mitigation ratios, were likely still producing a net gain in total wetland area and meeting the goals of “no net loss”. On average, wetland condition (as determined by WRAP scores) decreased by 9% from the time of release to the time of survey. Few differences were observed between wetland types with the exception of canopy richness and wetland trajectory, although correlations between wetland condition and time were non-significant. From the regression optimization analyses, it appeared that wetland location (as measured in the design WRAP score) was one of the most important factors contributing to surveyed wetland condition.
In Chapter 4, future land use data was used to determine predicted anthropogenic pressure on these urban wetland systems and evaluate changes to the overall landscape. GIS based analyses on landscape development intensity (LDI) determined that significant changes are not expected at the landscape scale by the year 2025, however drainage basins that possess mitigation wetlands are anticipated to increase in development intensity. Predicted LDI scores for constructed freshwater wetlands is predicted to increase significantly, which could have detrimental impacts on wetland condition.
This dissertation highlights the significance of wetland design and location on wetland condition. From this research, it is apparent that consideration of site placement is the most important design variable for small (3 hectares or less) freshwater wetlands; and that understanding of future conditions may promote long-term success. Long-term studies such as this are valuable tools for understanding how specific ecosystems respond to changing landscapes and should be used to help shape policies that reflect these ecological advancements. Understanding the past and preparing for the future is the only way to foster restoration success.
32
Chen, Zhigang. "A multinuclear magnetic resonance study of the structures and dynamics of lanthanum(III) complexes in solution." Thesis, University of Ottawa (Canada), 1993. http://hdl.handle.net/10393/6807.
Abstract:
The structural and dynamic behaviours of La(III) complexes in solution have been investigated by multinuclear magnetic resonance spectroscopy. In an acetonitrile solution of La(NO$\sb3)\sb3$ 6 H$\sb2$O, a combined $\sp{139}$La and $\sp $O NMR study revealed the existence of the following equilibrium: $\rm \{La(NO\sb3)\sb3(AN)\sb{x}\} + H\sb2O\rightleftharpoons\{La(NO\sb3)\sb3\ H\sb2O(AN)\sb{y}\}$. The NMR results have been quantitatively interpreted through this model. The detailed analysis of $\sp $O NMR spectra of H$\sb2$O allowed the indirect coupling constant between the $\sp $O of the coordinated water and $\sp{139}$La to be estimated. The main focus of the present work was given to the thermodynamic, structural, and dynamic studies of La(III) complexes with crown ethers in non-aqueous solutions. Stable 1:1 cation:crown ether complexes were formed between La(III) and 18C6, B15C5, and 15C5. During the course of the complexation, the crown ethers entered to the first coordination shell of La(III) by replacing the coordinated water and most probably the solvent (AN) molecules. In all the cases, the La(III) cations were coordinated by the oxygen atoms from three bidentate nitrate anions and from the crown ethers. Both cation and ligand exchanges are slow in the system $\rm La(NO\sb3)\sb3$ 6 H$\sb2$O - 18C6 - AN. The rate constant for the exchange is k = 0.15 s$\sp{-1}$ at 333 K. A dissociative exchange mechanism is one of the contributions to the La(III) exchange. This two-site exchange occurs only through a dissociative pathway, which is determined by the structures of the complexes. Since the ligand can not make contact with La(III) from both sides of the complexes, the dissociative mechanism must be the major contribution to the crown ether chemical exchange. An exchange process involving coordinated B15C5 and/or 15C5 was detected by $\sp1$H NMR spectra of the ligands. Detailed $\sp1$H NMR observations were made on the system involving 15C5. A model involving "inner" and "outer" proton exchange was postulated to account for the $\sp1$H NMR experimental data. The structures of La(III) complexes with crown ethers in solution and in the solid state were compared. It might be concluded that the structures of these complexes in solution are very similar to that in the solid state. (Abstract shortened by UMI.)
33
Schwaiger, Hans Frederick. "An implementation of smoothed particle hydrodynamics for large deformation, history dependent geomaterials with applications to tectonic deformation /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/6807.
34
Plett, Mark Lewis. "Free-space optical communication link across 16 km to a modulated retro-reflector array." College Park, Md. : University of Maryland, 2007. http://hdl.handle.net/1903/6807.
Abstract:
Thesis (Ph. D.) -- University of Maryland, College Park, 2007.Thesis research directed by: Electrical Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
35
Coberly, Samantha W. "The effect of household chemicals on deciduous and permanent tooth class." Thesis, Wichita State University, 2013. http://hdl.handle.net/10057/6807.
Abstract:
Dental anthropology was wide ranging implications for the field of anthropology. Teeth have become important sources of data about the individual as well as possibly being able to identify them. One problem that can arise is the chemical destruction of teeth whether it be diagenesis in an archaeological context or deliberately in a forensic context. In terms of deliberate destruction of the body several household chemicals are cheap and easily assessable. The purpose of this research is to look at how six household chemicals affect both deciduous and permanent tooth classes. The six chemicals include, Vinegar (acetic acid), Bleach (sodium hypochlorite), Biz (Sodium per carbonate), Lye (Sodium Hydroxide) Ammonia and the control (tap water). The teeth were placed in jars containing the chemical for twenty-four hours. Every hour the weight and mesial/distal length were measured. Of the six chemicals, vinegar affected the teeth the most.Thesis (M.A.)--Wichita State University, Fairmount College of Liberal Arts and Sciences, Dept. of Anthropology
36
Nunez-Valdez, Maria Eugenia. "Identification and analysis of the virulence factors in Serratia entomophila causing amber disease to the grass grub Costelytra zealandica : A molecular genetics approach." Thesis, University of Canterbury. Molecular Genetics, 1994. http://hdl.handle.net/10092/6807.
Abstract:
Amber disease caused by Serratia entomophila to larvae of Costelytra zealandica (Coleoptera: Scarabaeidae), is characterized by the production of two symptoms: anti-feeding effect (AFE) and amber coloration (AC). This study was aimed to identify and characterize the virulence factors involved in the disease. Three factors were identified: i) MRE-HA fimbriae; ii) an extracellular protease and, iii) an anti-feeding toxin.
i) Fimbriae type 1, 3 and MRE-HA were identified and characterized in S. entomophila by haemagglutination tests and electron microscopy. Analysis of nonpathogenic mutants suggested that the MRE-HA fimbriae were associated with pathogenicity.
ii) The locus coding for the extracellular protease of S. entomophila was identified and cloned. Examination and complementation assays of pathogenic and nonpathogenic strains showed that the protease is not directly involved, but it might potentiate the disease. It was suggested that the protease might be linked with pathogenicity by a common regulator factor.
iii) A locus named amb2 was identified, isolated and cloned. Genetic evidence and complementation assays with nonpathogenic mutants demonstrated that amb2 is responsible for the AFE. SDS-PAGE analysis of the amb2 gene products expressed in minicells showed the synthesis of two proteins of 21 and 25 kDa, named AnfA and AnfB. The genes encoding these proteins were mapped by deletion analysis and lacZ-gene fusions. DNA sequencing of the anfA gene revealed that another protein of ~12 kDa (AnfA2) was also encoded by amb2. Consensus sequences with homology to the binding sites of the bacterial regulators CAP, Fur and ToxR were identified in the promoter regions. Homology of 50% was found between a hydrophobic motif of the δ-endotoxin of Bacillus thuringiensis and AnfA1, The results suggest that AnfA1 , AnfA2 and AnfB might be subunits of a toxin causing the AFE.
It was concluded that virulence determinants in S. entomophila including the MRE-HA fimbriae, the extracellular protease and the anti-feeding toxin act in collaboration to produce amber disease.
37
Herschelman, Philip R. "United States Marine Corps Reserve First Term Attrition Characteristics." Thesis, Monterey, California. Naval Postgraduate School, 2012. http://hdl.handle.net/10945/6807.
Abstract:
This thesis examines the effect of attrition on USMCR NPS marines who enlisted with a 6X2 contract in FY 19942005. Three cohorts were established to determine if the events of September 11, 2001 had any impact on attrition rates with this population. The Pre-9/11 cohort enlisted in FY 19941995 and was used as a control group. The Overlap-9/11 cohort enlisted in FY 19962001, had no expectation of deployment but many did deploy in support of the Global War on Terrorism. The Post-9/11 cohort enlisted in FY 20022005 after 9/11 with full expectation to deploy. The analysis included previous attrition studies, descriptive statistics, and two different probit regression models to determine the effects of various characteristics on attrition. The variables analyzed included deployment variables, demographics, education and aptitude variables, and regional areas. The thesis found a decrease in attrition from the Pre-9/11 cohort to the Post-9/11 cohort. This was most likely caused by an increasing unemployment rate and deployments overseas. Deployments to combat areas decreased the probability of attrition. The other variables remained constant throughout the cohorts with predicted results. Overall, attrition is lower after 9/11 but as the economy improves and deployments decrease, attrition could return to Pre-9/11 levels.
38
Blismas, Neoklis G. "Multi project environments of construction clients." Thesis, Loughborough University, 2001. https://dspace.lboro.ac.uk/2134/6807.
Abstract:
The single project paradigm which dominates the literature of both project and construction management research does not accurately reflect the reality of many construction clients, who have large ongoing construction portfolios rather than one off construction projects. It is contended that the forces behind the multi-project environment (MPE) of construction clients are different to those traditionally viewed within the single project paradigm. Although several concepts of MPEs exist, an investigation of the form and dynamic interactions of components within MPEs of construction clients was lacking. The main objectives of the research were a) to determine the major factors influencing project delivery within the MPE, b) to investigate the interaction between these factors and the attributes of different forms of MPEs, c) to develop a typology of the MPE of construction clients, and d) suggest policies for effective management of MPEs. The MPEs of six construction clients were explored. The cases included a variety of retailers, a hotel group, a utility company and a housing and commercial developer to gain a range of perspectives within both primary and secondary experienced clients. Propositions were used as guidance for the investigation and analysis of the data, which consisted of interviews and organisational documentation. The data indicated that the business environment strongly drives the project inception process. However, the inherent uncertainty within the general environment causes a milieu of unpredictable change within the project delivery process, which in turn manifests in compromised performance and outcomes. Factors influencing the process are the lack of `continuity' within workload, contractual relationships, expertise and production, with concomitant effects on project outcomes. Suppliers perceive clients as `inhibiting continuity' thereby nullifying advantages inherent in repetitive and lean production principles. Other factors influencing the process are high planning authority intervention, low client commitment and low standardisation. Causal networks and an Influences model were used to graphically capture the dynamics of these factors within the MPE. 111 A typology of the MPE of construction clients was developed and validated through literal and theoretical replication between cases. Three main types emerged as descriptive of programmes within client's construction portfolios; Bounded programmes, Target programmes and Rolling programmes. The distinctive features of each type suggest that specific approaches are necessary for the successful delivery of projects within a portfolio. Solutions suggested by the data are presented.
39
Zogg, Philipp Emanuel. "Who mines what belongs to all? A historical analysis of the relationship between the state and capital in the South African mining industry." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6807.
Abstract:
Thesis (MA)--University of Stellenbosch, 2011.ENGLISH ABSTRACT: This thesis explores the relationship between the state and mining capital in South Africa since the beginning of gold mining. It provides a historical analysis centered around the notion that neither state nor capital have been able to dominate each other wholly but retained their respective relative strength and independence. By applying a qualitative approach, this thesis seeks to determine whether this notion still holds true today, how the relationship between the state and mining capital has evolved over time and by what factors was it determined. I suggest that structurally the nature of the state-capital relationship continues to endure fifteen years after apartheid. Accordingly the thesis is organized in terms of two critical junctures, one in the 1920s and one in the long 1970s when the balance of power between the state and mining capital experienced a number of shifts. Recent developments in post-apartheid South Africa seem, as of now at least, to represent more of a continuation of the shift that materialized in the long 1970s rather than a new conjuncture of its own or one in the making. Contrasting these findings with the adamant calls of the ANCYL for a nationalization of mines indicates that nationalization as the ANCYL foresees it does not seem to be informed by a historical understanding of the mining capital-state relations and that it is ceteris paribus unlikely to materialize.
AFRIKAANSE OPSOMMING: Die tesis ondersoek die verhouding tussen die staat en mynbou kapitaal in Suid-Afrika sedert die begin van die goudwedloop. Op grond van ’n historiese oorsig word daar aan die hand gedoen dat nòg die staat nóg mynbou kapitaal mekaar oorheers het en dat hierdie tendens vyftien jaar na apartheid steeds voortduur. Die magsbalans tussen die staat en kapitaal word egter gekenmerk deur twee uiteenlopende periodes, naamlik die Twintiger jare en die langdurige Sewentigs. Verwikkelinge in post-apartheid Suid-Afrika suggereer ’n voortsetting van die dinamika van die Sewentigs. Volgens onlangse uitlatings deur die ANC Jeugliga blyk dit asof die beweging nie bewus is van die kompleksiteit van hierdie historiese verhouding nie en dat dit dus hoogs onwaarskynlik is dat nasionalisering in terme van ANC Jeugliga beleid die lig sal sien.
40
Bolduc, Anthony. "Reproduction sonore de modèles vibroacoustiques 3D de plaques par wave field synthesis." Mémoire, Université de Sherbrooke, 2015. http://hdl.handle.net/11143/6807.
Abstract:
Bien que l'évaluation perceptive et les tests de qualité sonore soient maintenant reconnus comme des parties essentielles du processus de développement de produit dans plusieurs domaines, ils sont rarement mis en oeuvre en utilisant des techniques de reproduction sonore spatiale. À la place, différentes présentations auditives (par exemple: stéréophoniques, Surround ou binaurales) sont utilisées. Ce mémoire propose une méthode pour utiliser des modèles vibroacoustiques courants en ingénierie pour commander des systèmes audio basés sur la Wave Field Synthesis 2.5D et formés de plusieurs réseaux linéaires de haut-parleurs. Des opérateurs pour Wave Field Synthesis (WFS) 2.5D améliorés sont proposés, pour une application dans un contexte d'ingénierie. Les opérateurs sont étudiés pour plusieurs cas de reproduction de modèles analytiques vibroacoustiques 3D de plaques (sources primaires étendues extérieures ou focalisées). La méthode accepte aussi en intrant d'autres types de modèles (méthode des éléments finis, méthode des éléments frontière).
Des simulations de reproduction en champ libre démontrent que les opérateurs développés permettent une reproduction physique acceptable. Des reproductions physiques mesurées dans une salle WFS suggèrent que les nombreux effets de salle (réflexions et diffractions) modifient les caractéristiques reproduites du modèle. Globalement, de nombreuses similitudes existent entre les mesures et les simulations, soit les amplitudes globales, les distributions spatiales et temporelles, ainsi que les directions d'arrivée des fronts d'onde. Les caractéristiques spatiales et sonores des modèles sont bien reproduites, soit le patron de directivité, l'étendue spatiale perçue et le timbre. Cette validité est limitée dans le plan horizontal de reproduction, choix inhérent à la WFS 2.5D.
On peut tirer du travail de l'étudiant quelques contributions originales: 1) Un opérateur WFS 2.5D qui permet des sources primaires étendues focalisées et extérieures pour une configuration formée de plusieurs réseaux linéaires de haut-parleurs. 2) Un facteur de compensation d'amplitude et de phase pour les sources primaires hors du plan de reproduction, adapté au nouveau concept de ligne de référence. 3) Une proposition pour ne pas utiliser la simplification traditionnelle en WFS qui suppose que la source virtuelle est suffisamment loin des haut-parleurs. 4) Un facteur de correction d'énergie, ce qui permet l'obtention des bons niveaux physiques pour la reproduction. 5) L'application de la Wave Field Synthesis telle que développée dans une partie d'un processus de développement de produit acoustique, c'est-à-dire l'auralisation d'une mesure de perte par transmission ou de perte par insertion de panneaux, afin d'illustrer le potentiel d'utilisation en ingénierie.
41
Joaquim, Tiago Craveiro. "Caracterização mecânica de redes electrossoldadas em Aço A500NR SD por resistência." Master's thesis, Faculdade de Ciências e Tecnologia, 2011. http://hdl.handle.net/10362/6807.
Abstract:
Dissertação apresentada à Faculdade de
Ciências e Tecnologia da Universidade Nova de
Lisboa para a obtenção do Grau de Mestre em
Engenharia MecânicaA soldadura por resistência por pontos de malhas metálicas para construção civil é um processo bastante utilizado a nível industrial. Neste sector, qualquer estrutura de betão, possui no seu núcleo, uma estrutura de aço ou de outro tipo de material, que a torna capaz de suportar diversos tipos de esforço. Com base neste facto, a rede electrossoldada deve ser fabricada de maneira a suportar as condições, características e regulamentos do local de construção da estrutura. Desta forma, e devido à sua facilidade de parametrização para a obtenção de resultados aceitáveis, poucos são os estudos que caracterizam mecanicamente a influência dos parâmetros na resistência da junta e nas propriedades dos varões. Neste estudo foram soldados varões de aço A500NRSD com diâmetros de 6 mm e de 8 mm, com o objectivo de quantificar a influência de cada parâmetro (corrente, tempo e força de aperto) na força de corte da soldadura e características mecânicas do varão, sendo utilizado para o efeito, um planeamento composto central circunscrito. Através dos dados adquiridos ao longo do processo de soldadura, estudou-se o comportamento da resistência eléctrica dinâmica, que se verificou diminuir quando se aumenta a força de aperto. Com base no estudo efectuado, conclui-se que o grau de influência dos parâmetros de soldadura por resistência por pontos na qualidade da soldadura, varia com o diâmetro do varão.
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Nobre, Marlita Figueirinhas. "Produção de pão a partir de farinhas estremes de aveia." Master's thesis, ISA, 2014. http://hdl.handle.net/10400.5/6807.
Abstract:
Mestrado em Engenharia Alimentar - Processamento dos Alimentos - Instituto Superior de AgronomiaThe food market has been experiencing a growing demand for healthy bread in response to related needs. The present work aims to be a contribution to this topic by the production of pure oat flour bread having in mind its nutritional and bioactive components. Aiming to optimize the characteristics of the product, the effects of the flour particle size, physical pre-treatments (extrusion-cooking and steaming), action of different emulsifiers and fermentation time were studied. For bread production the flour hydration degree was determined using the Brabender Farinograph. All the produced breads were evaluated in terms of volume, texture and organoleptic assessment. It was found that the flour particle size affected the hardness and the density of the breads. Those that were produced with the coarser flour were those showing the higher values. The pre-treatments exerted negative effects. With regard to the emulsifiers, the sodium stearoyl-2-lactylate (SSL) stood out positively. Combining these results with the fermentation times, it was concluded that the bread presenting better characteristics was the one produced with the coarser flour (2mm), without neither any physical treatment nor addition of emulsifiers, proofed for 30 minutes. Thus, it is feasible to produce oat bread. It should be remarked that the found results may be improved namely by changing the hydration degree or using other technological aids.
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Nogueira, Mónica Sofia Reis. "Impactos ambientais em ecossistemas lóticos do norte de Portugal. Estudo da bio-ecologia e fisiologia de Anodonta anatina (L.) (Bivalvia, Unionidae)." Master's thesis, Instituto Politécnico de Bragança, Escola Superior Agrária, 2011. http://hdl.handle.net/10198/6807.
Abstract:
São vários os impactos ambientais que ameaçam os ecossistemas dulçaquícolas, sendo responsáveis pela diminuição e extinção de muitas populações, muitas delas pertencentes a bivalves de água doce. Fenómenos como a regularização de caudais, poluição, eutroficação e degradação do habitat aquático e ribeirinho são os principais factores que originam a diminuição das populações de Unionoida. Neste estudo foi seleccionada a espécie-alvo Anodonta anatina (L.), um bivalve que habita os sectores médio e terminal dos rios Sabor, Tua e Tâmega, no Nordeste de Portugal. Avaliaram-se diferentes aspectos relacionados com a bio-ecologia e fisiologia da espécie, especialmente associada à reprodução. Foi detectada a ocorrência simultânea de exemplares dióicos e outros hermafroditas, provavelmente como resposta adaptativa a flutuações nas condições ambientais e na dinâmica populacional. Verificou-se ainda que para A. anatina todas as espécies piscícolas autóctones testadas (truta, escalo, bordalo, ruivaco, boga, barbo e verdemã) e apenas uma espécie exótica (truta arco-íris) funcionaram como hospedeiros desta espécie. Este facto tem elevada relevância em termos de conservação da espécie, uma vez que a dominância de espécies piscícolas em albufeiras de barragens inviabiliza, a médio prazo, a sobrevivência das náiades. Para além do impacto da regularização foi ainda testada a influência de fenómenos associados à contaminação química. Os resultados obtidos permitiram verificar que mesmo para baixíssimas concentrações de metais pesados, como o cobre e o cobalto, o efeito é extremamente letal para estes bivalves. Foram avaliados os efeitos de curto-termo decorrentes do input de sedimentos na ribeira do Portelo, em oito locais distribuídos ao longo de 20 Km da rede hídrica. Mensuraram-se vários parâmetros físico-químicos da água e determinaram-se as respostas bióticas, nomeadamente das comunidades de macroinvertebrados e microbiológica (amostragem pontual). Os resultados mostraram: i) um aumento significativo da acidez da água (pH <5 na proximidade das escombreiras) e da condutividade (EC25 > 250 μS.cm-1); ii) um aumento na concentração de alguns metais pesados, nomeadamente dos elementos alumínio (Al), cobre (Cu), e cobalto (Co); iii) uma grande dispersão e deposição de sedimentos grosseiros e finos no leito dos cursos de água; iv) a perda de habitat (e.g. elevada colmatação dos interstícios do substrato por sedimentos) e a v) elevada mortalidade na fauna macrobentónica. Não foram registados, em termos espácio-temporais, sinais de recuperação na comunidade de macroinvertebrados, particularmente na ribeira do Portelo (aproximadamente com 3 km de extensão). Several environmental impacts are threatening freshwater ecosystems and are responsible for the diminishing and extinction of many populations, some of them belonging to freshwater bivalves. Regulation, pollution, eutrophication, aquatic and riparian habitat degradation are the main fenomena linked to the Unionoida populations reduction in the river ecosystems. In this study it was selected a key-species, Anodonta anatina (L.) that can be found in the middle and lower parts of Sabor, Tua e Tâmega rivers in northeastern Portugal. Different aspects of bio-ecology and physiology of A. anatina were evaluated, in particular the reproduction features. It was detected a simultaneous occurrence of dioicous and hermaphrodite individuals in the same population. This occurrence is probably related with an adaptation answer to the fluctuations of environmental condition and population dynamics. It was verified that, for A. anatina, all native fish species tested (Salmo trutta, Squalius carolitertii, Squalius alburnoides, Achondrostoma oligolepis, Pseudochondrostoma duriense, Luciobarbus bocagei and Cobitis paludica) and just one exotic species (Onchorynchus mykiss) functioned as host species. This fact has a relevant importance for the conservation of mussel populations, since exotic fish species dominate all modified environments like reservoirs, diminishing the survival of all bivalve populations. Furthermore, it was tested other type of disturbance, like chemical contamination. The results showed that the lower concentrations of heavy metals, like copper and cobalt, can have a lethal effect on these bivalve species. The short-term effects of sediment input in the Portelo stream was analysed during 7 successive months (January to July 2010). Physicochemical water and sediment parameters were measured and biotic responses of macroinvertebrate community evaluated in eight sampling sites distributed along the 20 km of river drainage. The results showed: i) a significant increase in water acidity (pH <5, near the mine) and conductivity (EC25 > 250 μS.cm-1); ii) an increase in some heavy metals concentrations, namely for aluminum (Al), copper (Cu) and cobalt (Co) elements; iii) a large spread of coarse sediments deposited in the river bed and iv) habitat loss (high embebedness in the sediments) and physical (death by asphyxia) and chemical (i.e. heavy metals and lowering pH) water pollution and v) high mortality of macroinvertebrate fauna. No signs of macroinvertebrate community recovery were detected, in both spatial and temporal analyses, particularly in the Portelo stream (approximately 3 km long).
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Olivera, Paredes Luis Carlos. "Optimización en los procesos de la saca para la disminución del maltrato del Gallus gallus domesticus en las granjas industriales del Perú." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2017. https://hdl.handle.net/20.500.12672/6807.
Abstract:
Publicación a texto completo no autorizada por el autorElabora en concordancia con los resultados obtenidos en las diferentes granjas que hay en la costa Peruana de las empresas avícolas más reconocidas en el Perú, observando las diferentes realidades de los ambientes de trabajo desde Norte Chico (“Barranca”) hasta Sur Chico (“Nazca”) que se encuentran las diferentes granjas y ambientes de trabajo lugares muy inhóspitos que para la crianza de aves son las adecuadas. Se enfoca en la última etapa de la crianza de las aves para la distribución de 2 maneras diferentes en la distribución de dichas aves para el consumo, la primera en SACD (“saca para los centros de distribución”) estas aves serán repartidas a los clientes mayoristas que serán repartidos a su vez a los mercados de las diferentes partes del Perú. La segunda es Beneficio (“aves que serán beneficiadas en las plantas”), en este proceso se van a repartir las diferentes partes de la aves (“pollo y pavo”) que serán empaquetadas para la venta con la marcas de la empresa.
Tesis
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Nascimento, Marcos de Araujo. "A observação da consciência de procedimentos na leitura de textos em ambiente digital." Pontifícia Universidade Católica do Rio Grande do Sul, 2014. http://hdl.handle.net/10923/6807.
Abstract:
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Previous issue date: 2014In this work aimed at examining two of the most important aspects of reading in the digital environment: 1) the awareness of the reader about the main processes involved in the accomplishment of a reading task with a specific goal and 2) the ways to develop the reading task and achieve the goal. The observation of these aspects mentioned above occured in two steps: first, each of the ten subjects of our research received two key-words to make a common search on them through the internet; then, each of the ten subjects was asked to write a report of the search and, at this point, they were asked to write, in descriptive or punctuated way, what they could remember having performed, when they were in front of the computer screen, on which a software had previously been installed to record what happened on the screen itself, and also to record the audio narrated by the subject. The core of this work considered the main types of reading and browsing behaviors, and aimed at finding out what the working memory of the reader can still keep from the procedures used when the reading task was performed, from the observation of the paths that the reader followed in the digital environment, i. e., in hypertext. In addition, a detailed survey data on procedures involving their search was presented in a written report, where an answer to the main questions concerning the processes involved, such as the awareness of the processes in pursuit of the goal of reading and the correlations between all this and the success or failure in the search, was sought. We emphasize that, as tools to get answers to these questions, we made use of the video record generated by the software, as well as the description of these videos and written accounts of the ten subjects (all of them undergraduate and graduate students from the Letters and Linguistics faculty at PUCRS). Finally, a session at the end of this dissertation was dedicated to the analyzes, correlations and conclusions about what was observed and described in the reports and records of each subject.
Neste trabalho buscamos examinar dois importantes aspectos da leitura em ambiente digital: 1) a consciência do leitor sobre os principais processos envolvidos na realização de uma leitura com um objetivo específico e 2) os caminhos de leitura para alcançar tal objetivo. A observação de tais aspectos supracitados ocorreu a partir de dois passos: no primeiro, cada um dos dez sujeitos de nossa pesquisa recebeu duas palavras-chave para fazer uma busca comum sobre elas, consultando a internet; no segundo, cada sujeito escreveu um relato logo após a busca, onde indicou de forma descritiva ou pontuada o que conseguiu lembrar de ter executado, quando esteve diante da tela de um computador no qual um programa havia sido previamente instalado para gravar o que aconteceu na tela e também capturar o áudio narrado pelo sujeito. O cerne deste trabalho foi indicar alguns tipos de comportamentos de leitura e navegação, com a intenção de saber o que a memória do leitor ainda guardava sobre os procedimentos utilizados, a partir da observação dos caminhos que o leitor percorreu em ambiente digital, ou seja, no hipertexto. Em seguida, houve um levantamento detalhado de dados sobre os procedimentos que envolveram as buscas dos sujeitos; levantamento o qual foi apresentado em um relato escrito, onde buscamos responder às principais questões relativas aos processos envolvidos, como a consciência dos processos em busca de um objetivo de leitura e as correlações entre tudo isso com o êxito ou fracasso da mesma. Ressaltamos que, como ferramentas para obter respostas para essas questões, utilizamos registros de vídeo e áudio gerados pelo software HYPERCAM 3, a descrição desses vídeos e os relatos escritos dos dez sujeitos (estudantes de Letras). Por fim, reservamos também um espaço no final dedicado às análises, correlações e conclusões sobre o que foi observado e descrito nos relatos e registros de cada um dos sujeitos.
46
Cunha, Maria Luzia Chollopetz da. "Efeito do banho sobre a flora microbiana da pele de recém-nascidos pré-termo." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2004. http://hdl.handle.net/10183/6807.
Abstract:
Objetivo: Avaliar os efeitos do banho somente com água e do banho com sabonete neutro e água sobre a flora microbiana cutânea, comparando a quantidade de colônias e o tipo de microorganismos presentes na pele dos recém-nascidos pré-termo antes e após o banho. Método: Ensaio clínico randomizado cego, com 73 pré-termos de idade gestacional entre 28 e 35 semanas e peso de nascimento entre 800 g e 1.800 g, alocados por randomização para um grupo que recebeu sete banhos somente com água ou para outro grupo que recebeu sete banhos com sabonete neutro e água. Foram coletados swabs da região axilar antes e após o banho para comparação da flora cutânea de ambos os grupos. Resultados: O Staphylococcus coagulase negativo foi o microorganismo com maior prevalência nos dois grupos. Na comparação, entre os grupos, da contagem de colônias de microorganismos, não houve diferença significativa. A comparação do número de UFC realizada pela ANOVA de medidas repetidas, mostrou uma diferença significativa ao longo do tempo dos germes gram-positivos (P < 0,001) e dos germes gram-negativos (P = 0,032) nos dois grupos, indicando que a colonização da pele diminuiu em ambos os grupos de maneira semelhante, sem haver diferença significativa entre os dois grupos de pré-termos. Conclusões: O banho do pré-termo com sabonete neutro e água e o banho somente com água produzem efeitos semelhantes sobre a colonização da pele do recém-nascido prétermo hospitalizado em UTIN, sendo ambos eficazes na redução do número de colônias de bactérias gram-positivas e gram-negativas.
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Van, Niekerk Kate. "Fashioning transformation? Implications for the politics of recognition among Cape Town youth." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/6807.
Abstract:
This thesis explores the novel idea that fashion may assist in creating social justice and transformation in post-apartheid South Africa. 2Bop takes its inspiration from the classic arcade video games of the eighties and nineties, and the experiences of playing them as a child on the Cape Flats. The brand references Cape Flats 'corner shop culture' and 'Kaapse' (Cape Afrikaans dialect) slang. The thesis looks at the literature around the politics of recognition, pioneered by Charles Taylor, in order to try and understand whether a fashion brand with a broad customer base could produce a shared recognition between young people across pervasive apartheid divides - especially in Cape Town, which is still visibly and geographically divided along lines of race and class. The research was done through in-depth open-ended interviews with 35 participants of different races, classes and backgrounds;; as well as fieldwork done in stores where the brand is sold, and at various events around Cape Town. The participants divided roughly into two groups: a more multiracial, middle class group in the Cape Town City Bowl and an entirely coloured, working class group in Bishop Lavis on the Cape Flats. Through two overarching themes that emerged from the data, nostalgia and authenticity, this thesis reveals the complex ways that people identify with their clothing, their history, and one another. Firstly, 2Bop inspires nostalgia for both playing the actual games, as well as the spaces where the games were played. However these experiences are politicized by the environments in which they were set, and reveal the contradictions of a nostalgia for an 'ordinary' childhood on the Cape Flats that involved both pleasure and pain. This sense of nostalgia is rooted in the anxieties of the present and this is illustrated further by the emphasis put on the brand being 'authentic' and the assertion of boundaries between who 'gets it' and who does not. The ideal of authenticity speaks to anxieties of class and race deprivation and social mobility between Cape Town and the Cape Flats ?the fear of 'selling out', the need to remain connected to one's roots without becoming stuck, the desire to feel like one has ownership of an identity as a young person in a fledgling democracy that is constantly in flux.
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Proferes, Nicholas. "Privacy how do we define it, assess it, and then seek to protect it online and why? /." CONNECT TO ELECTRONIC THESIS, 2008. http://hdl.handle.net/1961/6807.
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Smithee, Lauren Christine. "Multiculturalism and Social Work: A Content Analysis of the Past 25 Years of Research." BYU ScholarsArchive, 2017. https://scholarsarchive.byu.edu/etd/6807.
Abstract:
The purpose of this content analysis was to analyze the past 25 years of research in two major social work journals, Social Work and Research on Social Work Practice, to provide a status update on the amount of ethnic-focused research being published within the discipline. This analysis examined trends in ethnic-focused publications, the change across time in percent of focused articles, the top topics studied, per ethnic group, the top funded topics, most and least involved funding agencies, geographical groupings of focused samples, the setting of the samples, measures used, and the percentage of samples based in a clinical versus non-clinical setting. Results showed there has been continued growth and improvement in quality and quantity of minority-focused research in both journals, although there is still room for growth within the discipline towards increased multicultural competence. While the majority of focused research studied African American and Latinos, little attention was given to Asian and Native American populations. Furthermore, while almost twice as many focused articles were funded, compared to non-focused articles, the types of topics being funded are still not as representative of the needs of ethnic minority populations as they could be. While the increase in ethnic focused research over the past 25 years is promising, additional focus within the field is warranted. Suggestions are given to improve the quality and quantity of ethnic-focused research over time.
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Lonja, Zoliswa Caroline. "A qualitative exploration of the complexities in agenda-setting and participation processes in sanitation services in Site C, Khayelitsha: 2010-2013." University of the Western Cape, 2018. http://hdl.handle.net/11394/6807.
Abstract:
Masters in Public Administration - MPA"Sanitation is dignity" as the state has proclaimed while water is life. Yet to date, there are families and communities that are still dreaming that one day their dignity will be restored and they will have access to proper toilets, clean water that are within close proximity including proper houses. In the 24th year of democracy, people in South Africa are still protesting and challenging government to address the inequalities of the past and reset the agenda of change. These persistent protests are about basic needs and service delivery, but increasingly protestors are invoking the concept of relative needs, dignity and human rights and taking protests to the powerful and wealthy. In fact, the idea of the state as sacrosanct has been deflated since protestors throw poo at state officials and vandalise state infrastructure. The “poo wars” that broke out in 2012 with poo dumped at the airport and government buildings continued with the dumping of excrement on the Rhodes statue at UCT shows that the poor can sometimes set the agenda of change and force politicians to listen. Among the defensive responses raised by authorities is that people put their shacks on private land or pieces of land that are not suitable for housing (wetlands). Politically, there are complex issues in the Western Cape, both the Province and the City of Cape Town Metro are Democratic Alliance (DA) run whilst national government is ruled by the African National Congress (ANC). The majority of townships residents are ANC supporters with a few DA Proportional Representative (PR) councillors. This study looks at a qualitative exploration of the complexities in agenda-setting and participation processes in sanitation services in Site C, Khayelitsha between 2010-2013.Residents see agenda setting and engagements as unilateral, as this study found. It is designed into six chapters. The study was designed in a manner that it would reflect the knowledge and understanding the notion of consultation, community participation in decision-making, agenda-setting and implementation of projects or programmes by the people of Khayelitsha-Site C, Councillors, Shopstewards and officials of the City of Cape Town. Over 20 interviews were completed. A key finding is that by taking poo out of its usual place, taking it out of the private into the public domain and to the rich and by invading their space, the issues of the poor are no longer confined to ghetto townships. Boundaries between state and civil society have become porous. Cape Town’s poor residents using portable toilets commonly known as "pota-pota", and also the temporary toilets commonly known as ‘Mshengu’ have argued that these interim services are not only poorly maintained and dirty but are vastly inferior compared to white areas.