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The economics of developing water resource projects in the Ethiopian Nile River basin : their environmental, and transboundary implications /Mekonnen, Kefyalew. January 2003 (has links) (PDF)
Thesis (Ph. D.)--University of Queensland, 2003. / Includes bibliographical references.
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To have and to hold continuity and changes in property rights institutions governing water resources among the Meru of Tanzania and the BaKgatla in Botswana 1925-2000 /Carlsson, Ellen. January 1900 (has links)
Thesis (doctoral)--Lund University, 2003.
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The regional value of water in agricultureDeBodisco, Christopher N. January 2007 (has links)
Thesis (Ph. D. in Economics)--Vanderbilt University, Aug. 2007. / Title from title screen. Includes bibliographical references.
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Effects of transitional policies on labor market outcomes fifteen years after transition the case of Ukraine and Lithuania /Pavlova, Olga. January 2006 (has links)
Thesis (Ph. D.)--Georgia State University, 2006. / Title from title screen. Julie L. Hotchkiss, committee chair; Dawn M. Baunach, Erdal Tekin, Jorge L. Martinez-Vazquez, Bruce E. Kaufman, committee members. Electronic text (177 p.) : digital, PDF file. Description based on contents viewed June 19, 2007. Includes bibliographical references (p. 171-176).
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Dynamic digital control schemes for three-phase UPS invertersUys, Jacobus Johannes 12 1900 (has links)
Thesis (MScEng)--University of Stellenbosch, 2002. / ENGLISH ABSTRACT: This thesis presents the design and implementation of a voltage controller for an
Uninterruptible Power Supply (UPS) Inverter. The inverter is capable of producing a
nearly sinusoidal output voltage waveform, thereby keeping the Total Harmonic
Distortion (THD) to a minimum.
Digital controllers introduce a time delay in the control law that causes system
instability. Various control techniques, which includes Pade approximations and
system augmentation, are investigated to eliminate the effect of the time delay. These
controllers employ classical control as well as modem control techniques. The
selection of the various control parameters is verified by mathematical equations. A
load-disturbance compensation scheme, implementing feed-forward and gain
scheduling, is also developed to improve voltage distortion when varying loads, such
as non-linear loads, are connected to the system. It is shown that the constructed
pulse-width modulated (PWM) control scheme can achieve fast dynamic response as
well as a low THD. / AFRIKAANSE OPSOMMING: Hierdie verhandeling ondersoek die ontwerp en implementering van 'n spanningsbeheerder
vir 'n ononderbroke kragtoevoer omsetter. Die stelsel produseer 'n uittree
spannigsgolfvorm met 'n lae Totale Harmoniese Distorisie (THD).
Digital beheerders veroorsaak 'n tydvertraging in die beheerwet wat stelsel
onstabiliteit kan veroorsaak. Verskeie beheertegnieke wat gebaseer is op die Pade
benaderings van die tydvertraging en stelsel aanpassings, is ondersoek. Hierdie
beheerders maak gebruik van klassieke en moderne beheertegnieke. Die seleksie van
die verskeie beheerderveranderlikes word gestaaf deur wiskundige vergelykings.
Spannigsvervorming word tot 'n minimum beperk deur gebruik te maak van 'n
lasveranderings-kompensasietegniek wat onderskeidelik vorentoe-voer en aanwins
skedulering implementeer. Verder word daar bewys dat die pulswydte modulasie
(PWM) beheerskema vinnige dinamiese gedrag asook 'n lae THD bewerkstellig.
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Análise crítica da colaboração em cadeias de suprimentos : o caso da cadeia automotiva gaúchaFaé, Cristhiano Stefani January 2007 (has links)
O Gerenciamento da Cadeia de Suprimentos tem exercido um caratér estratégico para as empresas que queiram se manter competitivas. Percebe-se que é necessário ser eficiente tanto interna quanto externamente às fronteiras da empresa. Neste cenário, diversas empresas vêm obtendo bons resultados com a aplicação de práticas e iniciativas colaborativas que buscam estreitar os relacionamentos entre os parceiros comerciais ao longo da cadeia, gerando ganhos como redução de estoques, aumento do nível de serviço, aumento de vendas, redução de custos, entre outros. O objetivo desta dissertação é a identificação do atual nível de colaboração entre empresas de uma cadeia de suprimentos. A metodologia de estudo está baseada na aplicação de uma pesquisa survey na cadeia automotiva do Rio Grande do Sul e foi realizada através de questionários que foram aplicados pela internet e através de entrevistas presenciais. A pesquisa utilizou informações disponibilizadas pelo Instituto Gaúcho de Estudos Automotivos, que forneceu ainda um suporte tecnológico para o gerenciamento das informações. Os resultados revelaram que ainda são poucas as empresas que aplicam as iniciativas de supply chain, porém a expectativa é grande em relação às empresas que demonstraram interesse em aplicar diversas iniciativas nos próximos dois anos. Verificou-se ainda que o maior percentual de utilização está concentrado nas grandes empresas e as iniciativas mais utilizadas atualmente são o EDI, a Seleção e Desenvolvimento de Fornecedores e o Desenvolvimento Conjunto de Produtos. Portanto, os resultados demonstram que as empresas da cadeia automotiva gaúcha apresentam um nível de colaboração modesto, mas possuem plenas condições de otimizar os seus processos e alavancar o desempenho da cadeia como um todo a partir de uma maior aplicação das iniciativas de supply chain apresentadas neste trabalho. / The supply chain management has recently become a major concern for competitive companies. Managers recognize it is necessary for companies to be efficient both internally and externally to their boundaries. On this scenario, several companies have been achieving good results applying practices and collaborative initiatives that lead to straight the relationship between the partners along the chain. This effort also directs to reducing stock, increasing level of service, increasing in sales, reducing in costs, among others. The purpose of this study is the identification of the actual collaboration level among supply chain companies. The methodology of study is based on the application of a survey on the automotive chain of Rio Grande do Sul and was conducted using questionnaires applied online and trough appointments. This study used knowledge provided by IGEA (Instituto Gaúcho de Estudos Automotivos) that also helped offering technologic support to information management. The results shown that it is still incipient among companies the applicability of supply chain initiatives. However, there is a great expectation related with companies that are willing to use the initiatives for the next two years. In addition, the greatest utilization is concentrated on the big companies and the most utilized initiatives are EDI, supplier’s selection and development and cooperative product development. Therefore, the data suggest that automotive chain companies from RS have a moderate level of collaboration; nevertheless these companies demonstrate a great infrastructure to optimize their processes and increase general chain results with the adoption of the initiatives proposed on this project.
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Le supply chain management et la culture : la mise en oeuvre du supply chain management dans le contexte culturel chinois / Supply chain management and culture : the supply chain management in the chinese cultural contextWang, Feng 02 February 2010 (has links)
Partant d'un triple constat, à savoir l'importance de la démarche de "Supply Chain Management" (SCM) dans le management, la nécessaire prise en compte de la culture dans la mise en œuvre de cette démarche de gestion et une première évocation de la cohérence entre la culture chinoise et le SCM, l'objectif de notre recherche est d'analyser la mise en œuvre du SCM dans le contexte culturel chinois.La première partie de cette recherche a pour objectif tout d'abord d'effectuer une revue de littérature permettant de définir des conditions comportementales pour la mise en œuvre du SCM, d'étudier le concept de culture et les éléments culturels chinois puis, d'émettre des propositions de recherche ainsi que de construire un modèle conceptuel.La deuxième partie vise à développer la méthodologie en Sciences de gestion et à justifier notre choix à propos des méthodes de recherche mobilisées dans le travail empirique. Pour cela, nous avons mis en place un travail de terrain par une analyse qualitative de données recueillies lors d'entretiens semi-directifs et basée sur une observation de longue durée.Au travers de ces analyses, il en résulte que les éléments culturels chinois sont positivement corrélés aux conditions de la mise en œuvre de la démarche de SCM. / Based on a triple observation, namely the importance of Supply Chain Management approach in the management, the necessary taking into account of the culture for the implementation of this approach and a first impression of the accordance between the Chinese culture and the SCM, our research aims to analyze the SCM implementation in the Chinese cultural context.The first part of this resarch is designed for a litterature review which allows defining behavioral conditions for SCM implementation, analyzing the concept of culture as well as Chinese cultural elements, and then putting forward theoretical propositions and constructing a conceptual model.The second part intends developping the methodology of Management Science and explaining our choices of research methods mobilized in empirical analysis. After that, we realize the fieldwork through a qualitative analysis of dates collected from semi-directive interviews and a long period observation.Based on these analyses, we conclude that Chinese cultural elements positively correlate with conditions for SCM and the Chinese culture is a favorable context for SCM implementation.
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L'impact de la culture nationale sur la nature de l'intégration des supply chains : une étude à travers l'effet médiateur de la nature de la confiance : une application aux équipementiers automobiles marocainsBalambo, Mohammed Amine 17 September 2012 (has links)
Cette thèse a pour objectif de comprendre la nature et les bases de développement de l'intégration des Supply Chains dans le contexte de l'industrie des équipementiers automobiles marocains. Elle vise ainsi à démontrer que la nature de l'intégration de la Supply Chain nouée, dépend étroitement de la nature de la confiance développée envers le partenaire, qui est elle aussi fortement déterminée par les caractéristiques de la culture nationale. Sur le plan méthodologique, la thèse se fonde sur un processus séquentiel qui allie une phase exploratoire qualitative menée auprès de sociologues, anthropologues et historiens pour la compréhension des variables sur la culture nationale marocaine, ainsi qu'une étape menée auprès des équipementiers automobiles marocains. Dans un deuxième temps, un processus confirmatoire de confrontation de notre modèle conceptuel s'est établit sur la base d'une enquête quantitative analysée avec la méthode des équations structurelles sous l'approche PLS. Les résultats de la recherche suggèrent que les caractéristiques de la culture nationale marocaine favorisent le développement d'une confiance de nature affective qui permet de favoriser le développement d'une intégration relationnelle de la Supply Chain / The objective of this thesis is to understand the nature and the basis of supply chain integration development in the context of Moroccan automotive suppliers. Thereof, it will demonstrate how the nature of supply chain integration depends very closely on the nature of trust developed towards the partner. This trust is closely determined by the national culture's characteristics. Methodology wise, the thesis is based on a sequential process that starts with an exploratory qualitative phase conducted with sociologists, anthropologists and historians to understand the national culture's variables, and with Moroccan automotive suppliers. In a second confirmatory phase, the theoretical model was confronted to an empirical quantitative investigation. The results were analyzed using structural equations under the PLS approach. The research results suggest that the national culture's characteristics in Morocco favor the development of an affective type of trust that in turn favors the supply chain integration
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Supply-chain et organisation de la prise en charge de l'urgence sanitaire / Supply-chain and emergency healthcare organizationJoubert, Etienne 05 November 2015 (has links)
Cette thèse part du constat de la nécessité d'améliorer la performance temporelle des flux de patients souffrant de pathologies urgentes. Elle propose pour ce faire un rôle original des outils de gestion. Particulièrement dans le secteur public, les outils de gestion sont principalement utilisés pour conformer les organisations à la représentation d'un décideur éloigné du terrain, laissant un degré de liberté faible aux acteurs locaux. Nous utilisons des outils provenant des lean et supply-chain managements dans le cadre d'une chaîne de prise en charge des accidents vasculaires cérébraux et des urgences hospitalières pour montrer que les outils de gestion peuvent permettre de "générer" des organisations originales plus performantes que celles existantes. L'apport de cette thèse est donc double. Premièrement sur l'ouverture des fonctions des outils de gestion. Deuxièmement sur les chaînes logistiques de prise en charge de l'urgence, que nous appelons emergency healthcare supply-chains, pour lesquelles les modalités de fonctionnement sont décrites et distinguées par rapport aux notions classiques de healthcare supply chains. / In this thesis, we acknoledge that the performance of emergency patients flow could be highered. We propose to explore an original function of management tools. Indeed particularly in the public sector, management tools are mainly used to conform the organizations to the representation of a central deciding actor, disconnected from the field, which leads to a low degree of freedom of local workers. We use tools from lean and supply-chain managements respectively in a stroke care chain and a local emergency care chain to prove that management tools can "generate" more performing alternative organizations. This thesis proposes two kinds of findings. Firstly on the opening of the functions of management tools. Secondly on emergency healtcare supply chains, for which specificities compared to classical healthcare supply chains imply original management rules and functions.
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Gestion des risques dans une stérilisation centrale d'un établissement hospitalier : apport de la traçabilité à l'instrument / Risk management in central sterilization of a hospital : the contribution of tracing the instrumentTalon, Damien 24 January 2011 (has links)
Charge les instruments utilisés lors d’une intervention chirurgicale et réalise les opérations depréparation des Dispositifs Médicaux Stériles (DMS). Ces opérations sont tracées par un logiciel detraçabilité du processus. Actuellement, l’unité d’oeuvre tracée correspond au contenant disposantd’un code à barres, mais pas au contenu, c’est-à-dire à l’instrument individuel. Différentestechnologies permettraient d’effectuer cette traçabilité : codes data matrix gravés ou collés outranspondeurs RFID. L’analyse que nous avons conduite a procédé en deux temps : une recherchede l’état de l’art dans le domaine des systèmes de traçabilité et de la gestion des risques, puis uneanalyse fonctionnelle du système de préparation des DMS en déterminant les situations dangereusesà chaque phase. La méthode de gestion des risques choisie est l’Analyse Préliminaire des Risques(APR) qui comporte la définition du système puis l’élaboration de la cartographie des situationsdangereuses puis l’analyse, l’évaluation et le traitement des risques initiaux et résiduels. Pour lamettre en oeuvre nous avons procédé à la définition des échelles de gravité, de vraisemblance, decriticité, d’effort et la définition de la matrice de criticité. Nous avons ensuite réalisé l’analyse desrisques relatifs aux scénarios d’accident associés à chaque situation dangereuse identifiée dans lapremière étape, la construction des cartographies et l’élaboration du catalogue des paramètres desécurité. Cette analyse a permis d’évaluer l’apport de la traçabilité à l’instrument chirurgical dans laréduction des risques d’une UFSC et de déterminer quelle technologie actuelle répond le mieux ànos besoins. / The Central Sterile Supply Department (CSSD) of a hospital takes care of the surgical instrumentsused during a surgical operation and realizes their sterilization. A software is used to track and traceall the steps of this process. Actually, the tracking unity is the packaging, but not the contents(medical devices). Various technologies could be used to do this traceability: data matrix codes orRFID transponders. We led this analysis in two steps: a research of the state of the art in the field oftraceability system and of the risk management. A functional analysis was done to identify allpotential hazards and accidental events that may lead to an accident related to the sterilizationprocess. The method of risk management used is the Preliminary Hazard Analysis which led todefine and describe the system to be analyzed, to design of the hazard checklist, to define severityclasses, frequency, effort and risk matrix, then build the hazardous situation mapping and the riskmapping for each event and the elaboration of the follow up actions with the catalogue of safetyparameters. This analysis allowed us to estimate the contribution of the traceability of surgicalinstruments in the reduction of the risks of a CSSD and to determine the current technology thatanswers best our needs.
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