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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
331

Méthodes et outils pour la conception optimale des réseaux de distribution d'électricité dans les aéronefs / Methods and tools for the optimal design of aircraft electrical power systems

Giraud, Xavier 06 February 2014 (has links)
Dans le domaine aéronautique, la dernière décennie a été marquée par une augmentation constante et progressive du taux d’électrification des systèmes embarqués. L’avion plus électrique est aujourd’hui vu comme un axe d’amélioration majeure pour l’industrie aéronautique permettant d’atteindre des objectifs toujours plus ambitieux : réduction de l’impact environnemental, rationalisation des coûts de maintenance… Dans ce contexte, le réseau de distribution électrique joue un rôle majeur. Les architectes doivent imaginer de nouveaux concepts architecturaux afin d’assurer le « service » de fourniture d’électricité tout en minimisant la masse et le coût. Ainsi les travaux de cette thèse proposent des méthodes d’aide à la conception pour les architectes de réseau. Le manuscrit se divise en 2 parties pouvant être vues comme 2 études distinctes et qui sont introduites dans le chapitre 1.La 1ère partie, traitée dans les chapitres 2 et 3, développe des méthodes et outils afin de résoudre de manière automatique et optimale 2 tâches de l’architecte : la définition des reconfigurations du réseau et l’identification de l’allocation des charges. La formalisation de ces 2 problématiques met en lumière une caractéristique commune : l’explosion combinatoire. Ainsi les résolutions sont réalisées à l’aide de méthodes issues de la recherche opérationnelle. Un processus général est défini afin de traiter les 2 tâches de manière consistante. Les aspects liés à la reconfiguration sont traités à l’aide de : la théorie des graphes pour modéliser la connectivité du réseau, un système expert capturant les règles métiers et la programmation linéaire sélectionnant les reconfigurations les plus performantes. La méthode a été appliquée avec succès sur des réseaux avions existants (A400M et A350) ainsi que sur des réseaux plus électriques prospectifs. La deuxième tâche consistant en l’allocation des charges a été résolue à l’aide de méthodes stochastiques. L’algorithme génétique utilisant une méthode de nichage se révèle être le plus performant en proposant à l’architecte réseau des solutions performantes et variées. La 2ème partie, traitée dans le chapitre 4, s’intéresse à un nouveau concept le « cœur électronique modulaire et mutualisé ». Cet organe de distribution, étroitement lié à l’avion plus électrique, se caractérise par la mutualisation de « m » modules électronique de puissance pour « c » charges électriques. Les méthodes développées dans le chapitre 4 vise à concevoir de manière optimale ce nouveau cœur en ayant 2 degrés de liberté : le nombre « m » de modules et les reconfigurations entre les « m » modules et les « c » charges. De nouveau, la formalisation du problème met en évidence l’explosion combinatoire à laquelle est confronté le concepteur. Le principal objectif de cette étude est de proposer un cadre méthodologique pour la résolution de ce problème de conception. Ainsi une heuristique a été développée pour résoudre ce problème combinatoire. Une attention particulière a été portée pour développer des modèles de composants simples et génériques dans une procédure générale organisée. Enfin une cartographie a été réalisée afin de dégager d’une part les formes de solutions les plus performantes et d’identifier les éléments ayant les impacts les plus significatifs sur la masse du système complet. / In the aeronautics field, the last decade has been marked by a constant and gradual increase of the electrification rate of the embedded systems. Today, the More Electric Aircraft (MEA) is seen as a major axis of improvement for the aviation industry to achieve increasingly ambitious objectives: reducing environmental impact, rationalisation of maintenance costs...In the more electrical aircraft concept, the electrical network plays a major role. Today engineers must imagine new architectural solutions to ensure the electricity supply while minimizing weight and cost. In this context, the PhD work consists in providing new methods to support the design of electrical network architectures. The PhD work is divided into 2 parts which can be seen as 2 separate studies which are introduced in the chapter 1.The 1st part, treated in the chapters 2 and 3, develops methods and tools to solve problems automatically for 2 architecture tasks: the definition of the network reconfiguration and the identification of the electrical load allocation on busbars. The formalization of these two issues highlights a common characteristic: the combinatorial explosion. As the consequence, methods from operational research area are selected to solve the 2 tasks in the frame of a general and consistent design process. The reconfiguration aspects are solved by a methodology coupling together: graph theory to model the network connectivity, an expert system capturing know-how rules and linear programming selecting the most efficient reconfiguration. The approach was successfully applied on existing aircraft electrical networks (A400M and A350) and on future architectures. The second task, related to the electrical load allocation, is solved using stochastic methods. The genetic algorithm using a niching method is the best assessed optimization method. It provides good and diversified load allocations to the electrical network architect. The 2nd part, treated in the chapter 4, focuses on a new technological concept the « modular and mutualised power electronics center ». This distribution system, closely linked to the more electrical aircraft, aims at sharing « m » power electronics modules to « c » electrical loads. The methods developed in this PhD aim at carrying out an optimal design of this new power center with 2 design variables: the number « m » of modules and the reconfigurations between the « m » modules and the « c » loads. Again, the formalization of the problem highlights that the designer must deal with a combinatorial explosion. The main objective of this study is to propose a methodological framework for solving this design problem. A heuristic-based algorithm is developed to solve this combinatorial optimization problem. A particular attention is paid to develop an organized weight estimation procedure using generic sizing models. Finally a mapping is performed to identify the best solutions and to highlight the technological elements having the most significant impact on the complete system weight
332

The internal structure of consciousness

Routledge, Andrew James January 2015 (has links)
Our understanding of the physical world has evolved drastically over the last century and the microstructure described by subatomic physics has been found to be far stranger than we could previously have envisaged. However, our corresponding model of experience and its structure has remained largely untouched. The orthodox view conceives of our experience as made up of a number of different simpler experiences that are largely independent of one another. This traditional atomistic picture is deeply entrenched. But I argue that it is wrong. Our experience is extraordinarily rich and complex. In just a few seconds we may see, hear and smell a variety of things, feel the position and movement of our body, experience a blend of emotions, and undergo a series of conscious thoughts. This very familiar fact generates three puzzling questions. The first question concerns the way in which all these different things are experienced together. What we see, for example, is experienced alongside what we hear. Our visual experience does not occur in isolation from our auditory experience, sealed off and separate. It is fused together in some sense. It is co-conscious. We may then ask the Unity Question: What does the unity of consciousness consist in? The second question is the Counting Question: How many experiences does a unified region of consciousness involve? Should we think of our experience at a time as consisting in just one very rich experience, in a handful of sense-specific experiences, or in many very simple experiences? How should we go about counting experiences? Is there any principled way to do so?The third and final question, the Dependency Question, concerns the degree of autonomy of the various different aspects of our unified experience. For example, would one's visual experience be the same if one's emotional experience differed? Is the apparent colour of a sunset affected by the emotional state that we are in at the time? I offer a new answer to the Unity Question and argue that it has striking implications for the way that we address the Counting Question and the Dependency Question. In particular, it supports the view that our experience at a time consists in just one very rich experience in which all of the different aspects are heavily interdependent.
333

Reflexões sobre a prática de supervisão no Programa de Valorização do Profissional da Atenção Básica (PROVAB) e no Programa Mais Médicos / Reflections on the practical supervision in the "Programa de Valorização do Profissional da Atenção Básica" (Primary Care Professional Enhancement Program) - PROVAB - and in the "Programa Mais Médicos" (More Doctors Program)

Castro, Thiago Figueiredo, 1986- 27 August 2018 (has links)
Orientador: Aparecida Mari Iguti / Dissertação (mestrado profissional) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas / Made available in DSpace on 2018-08-27T08:15:35Z (GMT). No. of bitstreams: 1 Castro_ThiagoFigueiredo_M.pdf: 3221194 bytes, checksum: d79cd1511dcb239d46ed687486593eb9 (MD5) Previous issue date: 2015 / Resumo: Saúde é um direito social conquistado, e a efetivação deste direito só se cumpre com o enfrentamento dos seus dois principais entraves: financiamento em saúde e gestão dos recursos humanos em saúde. O Brasil tem lidado com a questão dos recursos humanos em saúde através de programas governamentais que têm por finalidade o provimento de profissionais e a melhoria da qualidade da formação destes. O PROVAB ¿ Programa de Valorização do Profissional da Atenção Básica e o Programa Mais Médicos são os dois mais recentes programas na área. O presente trabalho objetiva refletir e analisar, a partir da experiência do Sujeito-Pesquisador como Supervisor do PROVAB e do Programa Mais Médicos, sobre o papel da supervisão prática nestes programas, e também sobre suas potencialidades e limites como ferramenta pedagógica. Trata-se de um estudo de natureza qualitativa e exploratória, baseado em relatos de experiências do Sujeito-Pesquisador, ocorridas no período de 2013 a 2015. Realiza-se um estudo descritivo dos programas, em seguida são relatadas as experiências selecionadas de supervisão, e por fim realiza-se a construção de categorias de análise. São delimitados três grupos de categorias: supervisão em contexto, papel da supervisão e ferramentas de supervisão. A pesquisa encontra seus limites na contemporaneidade aos fatos, que dificultam o encontro de dados e fontes distintas às fornecidas pelo governo federal, além da própria escolha metodológica, que remete os achados ao olhar implicado do autor. Com este trabalho, verifica-se que a prática de supervisão no PROVAB e no Programa Mais Médicos tem grande potência pedagógica, e que uma melhor definição do papel do supervisor, assim como a incorporação de novas ferramentas, tal qual o Grupo Balint-Paidéia e a Supervisão Ampliada, são algumas das propostas para o avanço dessas políticas. Novos estudos são necessários, para ampliar o olhar dos profissionais, gestores, equipe, usuários sobre os programas e, verificar as mudanças ocorridas, e a influência/potência da supervisão nestas mudanças / Abstract: Health is a conquered social right, and the fulfillment of this right only occurs with the confrontation of its two main obstacles: financing and management of the health workforce. Brazil deals with the issue of human resources for health through government programs to provide professionals and improve the quality of training. The PROVAB - "Professional Enhancement Program Primary Care" (Professional Improvement Program Primary Care) and (More Medical Program) "More Doctors Program" are the two most recent programs in this field. This article aims to reflect and analyze, from the experience of the subject-researcher as a Supervisor on the role of practical supervision in these programs on their potential and limits as a pedagogical tool. This is a study of qualitative and exploratory nature, based on reports of subject-researcher experience, during the period from 2013 to 2015. The author develops a descriptive study of the programs and reports selected supervisory experiences, and finally performs the construction of analysis categories, organized into three groups: supervision in the context, the role of supervision and supervision tools. The research finds its limits in the contemporaneity to the facts, making it difficult to collect different data and sources provided only by the federal government, also in from the specific methodological choice, referred the findings to the implicated author's look. With this work, it seems that the practice in supervision on the PROVAB "More Doctors Program" has great educational power, and that a better definition of the role of the supervisor as well as the incorporation of new tools, such as Balint-Paideia¿s Groups and the "enhanced supervision" are some of the proposals for the advancement of these policies. More studies are needed to broaden the perspectives of professionals, managers, team members about the programs and verify the changes occurred, and the influence / power of the supervision in these changes / Mestrado / Política, Planejamento e Gestão em Saúde / Mestre em Saude Coletiva
334

MORAVSKÉ VINAŘSKÉ CENTRUM BRNO / Moravian wine centre Brno

Vojtěšek, Jiří January 2016 (has links)
The city of Brno has always been a center of Moravian wine. The new draft of wine center responds to this reality and represents the grandeur of wineries in its full glory. Respect for nature, love for traditions and love for order/system are the main aspects of the design. The proposal is essentially open to the public, however, the necessary modesty is preserved. Conversely taciturnity of production part of buliding holds the secrets of the deep traditions of Viticulture and Enology. Designed buildings are used for production, wine storage, administration associated with the production, tasting and selling wine, conferences, accommodation and, finally, wellness and other activities. The size of the building is the result of an optimal design that does not interfere with nearby historical buildings. The emphasis is on minimizing costs both during construction and during operation. Flor plan shape resembling the letter L is oriented towards the west courtyard. This raises a unique viticultural area court with a wide staircase. The amphitheater can be used for seasonal exhibitions, pilgrimages or feast of local entertainment. The yard is connected with the street Hlinky, which paraphrases the historic entrance portals into winecellars. The northern part of the building bites into the ground and connects the original winecellars with new facilities. Small narrow windows reflects the desired taciturnity, just as it was with winecellars in South Moravia for centuries.
335

Studie zefektivnění přípravy výroby u vybrané technologie / The study of increase in efficiency of manufacturing preparation of technology

Šudoma, Michal January 2009 (has links)
This paper discusses different alternatives of more efficient preparation of spheroided graphite cast iron production. Secondary metallurgy and chemical heating technology are used to recast cast iron fused in copula furnace. The work applies the known physical-chemical rules used in the production of quality spheroided graphite cast iron in regular production conditions. Based on the previous developments, the aim was to prepare implementation of verified secondary metallurgy processes in adjusted casting ladle. The casting ladle was adjusted in order to allow execution of all processes required in order for the relevant standards and material lists requirements to be met in respect to spheroided graphite cast iron quality. Comments regarding the trends in ferroalloy metallurgy and related marketing approach of the company. The work is concluded by a summary of advantages brought in by the new approaches compared to the traditional ones from the economical as well as environmental perspective.
336

Den gröna korridoren : Biologisk mångfald i stadsrummet

Härnborg, Rebecka January 2021 (has links)
Mitt mål är att göra stadsrummet inbjudande för fler än bara människor och stärka ekosystemet där fjärilar är en viktig del, både som pollinerare och föda för andra arter. Jag har valt att hjälpa just fjärilar då deras antal under de senaste åren har halverats och är i starkt behov av stöttning.  Med design som verktyg kommer jag att introducera de värdväxter som fjärilen är beroende av för att överleva. För att skapa en så stor förändring som möjligt använder jag mig av ett objekt som redan har en stark närvaro i stadslandskapet nämligen lyktstolpen.   Jag har designat en växtbädd som är anpassad efter lyktstolpen och i den finns det möjlighet att plantera upp till 24 st växter. Tack vare lyktstolparnas strategisk placering kan man med hjälp av min design koppla ihop stadens grönområden och introducera växtlighet där det i dagsläget inte finns någon. Hade inte du velat bo i en stad med massa växter och vackra fjärilar?
337

Centrum volnočasových aktivit Brno-Brněnská přehrada / Leisure time centre Brno - Brno reservoir

Eliášová, Kristýna January 2012 (has links)
The diploma thesis "Leisure time centre Brno - Brno reservoir" is processed in the form of architectural study. The theme of architectural study is project which integrates rowing club facilities, housing for students representing University of Technology in Brno, restaurant and observation tower. The main aim of proposal is to create dignified, interconnected spaces for these functions and to make the Brno reservoir even more attractive. Area for project of the Leisure time centre is located on a gentle slope and defined by the Rakovecka road and water area of the reservoir. The proposed project replaces all the existing buildings on the defined area of interest.
338

Internetbaserad kognitiv beteendeterapi för gravida med depression : En kvalitativ studie om upplevelsen av tillägg av extrastöd / Internet-based cognitive behavioral therapy for depression during pregnancy : A qualitative interview study on the experience of the addition of extra-counseling

Azami Naeini, Mona, Österberg, Malin January 2023 (has links)
Depression drabbar 10–20% av gravida kvinnor och kan leda till konsekvenser för bådebarnet, modern och samhället. IKBT för depression är en effektiv behandling, däremot har patientersom genomgått IKBT uttryckt behov av ytterligare stöd. Syftet med studien var att undersökaupplevelser av att erhålla extrastödsamtal under IKBT inom DANA-studien. Genom en kvalitativansats genomfördes intervjuer med nio deltagare med depression under graviditeten. Tematisk analysanvändes vilket resulterade i två huvudteman; Individanpassning efter behov och Integrering avbehandling. Resultatet visade att extrastödet utgjorde en möjlighet till flexibel individanpassningsamt ett stöd utifrån att IKBT upplevdes som en krävande behandling. Kommunikation upplevdessom avgörande för helhetsupplevelsen av behandlingen och extrastöd utgjorde en möjlighet till flerperspektiv utifrån tillgång till olika yrkeskompetenser. Resultatet ger en ökad förståelse avupplevelsen av extrastödet och dess funktion, samt vad deltagarna upplever som viktigt för att kunnagenomföra behandlingen. / Depression affects 10-20% of pregnant women and can cause consequences for the child,mother, and society. ICBT for depression is an effective treatment, however, patients that haveundergone ICBT have expressed a need for additional support. The purpose of this study was toexamine experiences of receiving extra-counseling during ICBT within the DANA-study. Through aqualitative approach, interviews were conducted with nine participants with depression duringpregnancy. Thematic analysis was used and resulted in two main themes: Adaptation to individualneeds and Integration of treatment. The result shows that extra-counseling provided an opportunityto adapt the treatment to specific needs, while functioning as a support to the ICBT which wasexperienced demanding. Communication was crucial to the overall experience, and extra-counselingwas a possibility to gain perspective from different professions. This provides increasedunderstanding of experiences of extra-counseling, its function, and what is experienced as importantto accomplish the treatment.
339

Viktiga kompetenser och förmågor inom Big Data analytics och dess effektivitet på marknadsföring : En kvalitativ studie om Big Data analytics inom köksbranschen / Important skills and abilities in Big Data analytics and its effectiveness on marketing : A qualitative study on Big Data analytics in the kitchen industry

Hagberg, Jonatan, Russell, Philip, Larsson, Emil January 2023 (has links)
Big Data analytics är en fascinerande process som lyfter fram möjligheten att utvinna djupgående insikter och dra slutsatser från omfattande datamängder, och dess tillämpningsområden sträcker sig över flera branscher och områden inklusive köksbranschen och marknadsföring som denna studie fokuserar på. Utmaningen att dra nytta av Big Data analytics för att förstå konsumentbeteenden och preferenser kan dock vara betydande, men när företag tillhandahåller de rätta resurserna, kan de på ett effektivt sätt optimera sina marknadsföringsstrategier. Denna studie syftade till att utforska vilka specifika kompetenser och förmågor företag behöver för att framgångsrikt hantera stora datamängder, samt hur Big Data analytics kan bidra till en effektivare marknadsföring inom köksbranschen. Genom att använda en induktiv forskningsansats och genomföra semistrukturerade intervjuer med fyra företag inom den svenska köksbranschen, kopplades svaren till ett teoretiskt ramverk för att analysera datan och identifiera kompetenser, förmågor och effekter inom Big Data analytics. Resultaten visade på vikten av olika kompetenser såsom teknisk kunskap, datavisualisering, machine learning, marknadsföringskunskaper, kreativt tänkande, ledarskap och kommunikation för att uppnå framgång inom Big Data analytics. Studien betonade också den avgörande betydelsen av att samla in högkvalitativ data, integrera verktyg och använda insikterna för att optimera marknadsföringsstrategier inom köksbranschen. Som förslag till framtida forskning framhåller denna studie behovet av att undersöka organisatoriska och kulturella faktorer som påverkar potentialen inom Big Data analytics. Det föreslås även att framtida forskning bör utforska andra branscher och deras specifika behov när det gäller Big Data analytics, vilket kan bredda förståelsen inom detta område. Nyckelord: Big Data analytics, effektivare marknadsföring, kompetenser, Big Data analytics förmågor, dynamiska förmågor, marknadsrelaterade förmågor, materiella resurser, immateriella resurser, mänskliga förmågor / Summary Big Data analytics is a fascinating process that highlights the ability to extract profound insights and draw conclusions from large amounts of data. Its applications span across various industries and domains, including the kitchen industry and marketing, which this study focuses on. However, harnessing the power of Big Data analytics to understand consumer behavior and preferences can be challenging. Nevertheless, when companies provide the right resources, they can effectively optimize their marketing strategies. This study aimed to explore the specific competencies and skills that companies need to successfully handle large volumes of data, as well as how Big Data analytics can contribute to more efficient marketing in the kitchen industry. Employing an inductive research approach and conducting semi-structured interviews with four companies in the Swedish kitchen industry, the findings were linked to a theoretical framework to analyze the data and identify competencies, skills, and effects within Big Data analytics. The results underscored the importance of various competencies such as technical knowledge, data visualization, machine learning, marketing expertise, creative thinking, leadership, and communication in achieving success in Big Data analytics. The study also emphasized the crucial significance of collecting high-quality data, integrating tools, and utilizing insights to optimize marketing strategies within the kitchen industry. As a suggestion for future research, this study highlights the need to examine organizational and cultural factors that impact the potential of Big Data analytics. Additionally, it is proposed that future research should explore other industries and their specific requirements regarding Big Data analytics, thereby broadening the understanding in this field.
340

On magnetic amplifiers in aircraft applications

Austrin, Lars January 2007 (has links)
In the process of designing an electric power supply system for an aircraft, parameters like low weight and low losses are important. Reliability, robustness and low cost are other important factors. In the Saab Gripen aircraft, the design of the primary power supply of the electric flight control system was updated by exchanging a switching transistor regulator to a magnetic amplifier (magamp). By introducing a magamp design, weight was saved and a more reliable power supply system at a lower cost was achieved. In this particular case, with the power supply of the electric flight control system in the Saab Gripen fighter, advantage could be taken of a specific permanent magnet generator (PM-generator). The frequency of the generator offered the perfect conditions for a magamp controller. A key parameter in designing magnetic amplifiers (magamps) is low losses. New amorphous alloys offer new possibilities of the technique in designing magnetic amplifiers, because of their extremely low losses. The core losses are evaluated by studying the equations and diagrams specifying the power losses. The core losses are evaluated and compared with the copper losses in the process of optimizing low weight and low losses. For this an engineering tool is developed and demonstrated. Evaluations of the hysteresis characteristics for the magnetic alloys, as well as modeling and simulation of the core losses, are presented in this work. The modeling of the core losses includes hysteresis losses, eddy current losses and excess losses as well as copper losses. The losses are studied dynamically during realistic operational conditions. The model can be used for any generic analysis of hysteresis in magnetic circuits. Applications of magnetic amplifiers in aircrafts have been demonstrated to be a feasible alternative / QC 20101103

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