Dissertations / Theses: 'Producer capture'

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Stephan, Elzbieta M. "Experimental studies of polarization produced in {mü}⁻ capture on ¹⁶O /." Zürich, 1997. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=12226.

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Uslu, Ahmet. "Capture Time : Recording in digital era." Thesis, Konstfack, Industridesign, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-3901.

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The primary aim of this project is getting a complete understanding of photography’s development process and looking into future, user-centered innovations. Digital evolution changed the rules of product design. Products became a part of a complex system, consisting of a variety of different touch-points which also constantly extend. Photography and cameras are changing. Mobile phones, wireless connections and sharing platforms have a big impact on photography. Everything is getting connected to each other, both people and devices. How will digital photography adapt to this new world? How will people change their perception of images? Is it possible to design a camera considering all other systems around it? While designing a highly technological device, how can user-perspective be included in the design process?

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Doultsinou, Athanasia. "Service knowledge capture and re-use to support product design." Thesis, Cranfield University, 2010. http://dspace.lib.cranfield.ac.uk/handle/1826/6277.

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A significant change is taking place in manufacturing company strategies around the globe. With new monitoring and service methods, new opportunities of product use and service provision emerge. The manufacturing companies once focused on mere product manufacture, now have started to provide ‘systemic solutions’, i.e. products combined with service packages, which are often referred to as Product-Service Systems (PSS). Currently, there is not a well-established feedback mechanism between service and design. The aim of this research is to develop a methodology to capture, represent, and re-use service knowledge to support product design. For the accomplishment of this aim an extensive literature review of the related themes to the research area took place. It was found that the feedback from service to design is fundamental for the enhancement of product performance; however, the existing literature in this area is not adequate. The industrial investigation led to the realisation that there is not an established mechanism in place to show how service knowledge (SK) can be used by designers. An in- depth investigation took place with the collaboration of, in total, four UK manufacturing companies. The author studied both the conceptual and detailed design, focusing on the design requirements (DR) and the design/service features (DF/SF) respectively. The first step was the capture of SK and its representation using Protégé software. Following this, at the conceptual design stage, SK can be re-used through the DR-SK tool. The two main purposes of the tool are the knowledge retrieval by designers, and the identification of gaps in SK. At the detailed design stage, designers can access SK through the DF-SK tool, and the developed knowledge templates. The SKaD framework was created, as a result of the amalgamation among the SKaD methodology, the knowledge templates, and the tools developed to link SK and DR, SF, and DF. Conclusively, the framework was applied on case studies within the pump manufacturing and aerospace industries, and its purpose (to aid designers accessing and re-using SK) was validated by experts within the collaborating organisations. As a result of this research’s findings, the service personnel can capture SK in a structured manner, which can then be re- used by product designers at both the conceptual and detailed design stage.

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Sabbaghian, Nader 1969. "Product development process capture & display using web-based technologies." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/80590.

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Glynn, Stephen V. (Stephen Vincent) 1962, and Thomas G. 1967 Pelland. "Information flow & knowledge capture : lessons for distributed integrated product teams." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/29155.

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Thesis (S.M.)--Massachusetts Institute of Technology, System Design & Management Program, 2000. Includes bibliographical references (p. 134-135). Two major organizational tools, Integrated Process and Product Development (IPPD) and co-location, have been key initiatives in many corporate knowledge management and information flow strategies. The benefits of IPPD and co-location are well documented, and central to the success of these tools is the increased information flow and knowledge transfer across organizational boundaries. The fundamental knowledge management philosophy of IPPD is person-to-person tacit knowledge sharing and capture through the establishment of multi-disciplined Integrated Product Teams (IPT). Co-location of the integrated product team members has facilitated frequent informal face-to-face information flow outside of the structured meetings typical of IPPD processes. In today's global environment, the development and manufacture of large complex systems can involve hundreds, if not thousands, of geographically dispersed engineers often from different companies working on IPTs. In such an environment, the implementation of IPPD is challenging, and co-location is not feasible across the entire enterprise. The development of a comprehensive knowledge capture and information flow strategy aligned to the organizational architecture and processes involved with proper utilization of available information technologies is critical in facilitating information flow and knowledge transfer between dispersed IPTs. In this thesis we provide a case study of the knowledge capture and information flow issues that have arisen with the recent transition to the Module Center organization at Pratt & Whitney. We identify several critical enablers for efficient information flow and knowledge capture in a dispersed IPT environment by analyzing qualitative and quantitative survey data obtained at Pratt & Whitney, existing research in this area, and our own observations as participants in this environment. From this analysis, we identify key information flow and knowledge capture issues and provide recommendations for potential improvement. The Design Structures Matrix (DSM) methodology is used to understand the complex, tightly coupled information flow between the IPTs that exist at Pratt & Whitney. We build upon the previous Pratt & Whitney DSM work. The proposed DSM is not only a valuable tool identifying the information flow paths that exist between part level and system level attributes, but also can be utilized as an information technology tool to capture the content or knowledge contained in the information flow paths identified. by Stephen V. Glynn [and] Thomas G. Pelland. S.M.

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Phillips, Sophie E. C. "Structuring multimedia data to capture design rationale and to support product development." Thesis, University College London (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.399013.

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Di, Felice Luca. "CO2 capture and catalytic steam reforming of tar produced in the fluidized bed gasification process." Strasbourg, 2010. https://publication-theses.unistra.fr/public/theses_doctorat/2010/DI_FELICE_Luca_2010.pdf.

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Le travail de doctorat avait pour objectif d’améliorer les performances de la gazéification de la biomasse en se focalisant sur deux aspects : qualité du gaz produit (élimination des goudrons) et captage de CO2 formé en vue d’une valorisation chimique ultérieure. Le travail de thèse a été divisé en quatre parties : 1. Tests de laboratoire sur la gazéification de la biomasse dans des conditions proches d’une utilisation effective avec la mise en place d’un élément catalytique filtrant dans la partie disponible du réacteur de gazéification en lit fluidisé. La présence de goudrons (hydrocarbures aromatiques lourds) est le principal obstacle à une valorisation chimique des gaz formés en plus de la valorisation énergétique. 2. Etude couplée du reformage d’hydrocarbures (méthane, aromatiques) et de la capture de CO2 avec de la dolomite (CaO, MgO) et un catalyseur à base de nickel. Les hydrocarbures testés sont représentatifs des goudrons produits lors de la gazéification de la biomasse. 3. Optimisation du solide minéral (dolomite) pour un système catalytique à double fonction : vaporeformage et captage de CO2 pour une meilleure efficacité de la dolomite modifiée pour les réactions de reformage. Etude de l’addition d’oxyde de fer et de nickel à la structure dolomite. 4. Etude du captage de CO2 par la dolomite dans un réacteur lit fluidisé à l’échelle du laboratoire. La cinétique de l’adsorption de CO2 par CaO dans les conditions réelles a été déterminée et un modèle réactionnel proposé The objective of the Ph. D. Work was the improvement of the biomass gasification performances, focusing on two main aspects: product gas quality (tar elimination) and in situ CO2 capture, in order to carry out a further chemical valorisation. The PhD work has been developed in four main directions: 1. Laboratory tests of a biomass gasification process, at real process conditions by means of a firstly prepared catalytically activated filter element inserted in the freeboard of a fluidized bed steam gasifier. The presence of tar (heavy, aromatic hydrocarbons) is the main obstacle for a chemical and energetic valorisation of the product gas. 2. The study of simultaneous hydrocarbon (methane, aromatics) reforming and CO2 capture by means of commercial, readily available materials (a nickel catalyst mixed with calcined dolomite, CaOMgO). The model compounds used are representative of tar produced in a real biomass gasification process. 3. The study of the opportunity of optimize the granular, mineral solid material for a system performing the double function of steam reforming and CO2 capture, improving the catalytic activity of dolomite for reforming reactions. Effect of addition of iron and nickel to the dolomite structure. 4. The study of CO2 capture by particles of dolomite in a gas-fluidized in a laboratory-scale reactor. Step-response experiments have been performed to determine CaO conversion rates in the bed as a function of time and dolomite particle diameter. A simple flow-with-reaction model of the process is proposed

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Atasayar, Pinar. "Influence of the time of capture on lipid content of the meagre produced in aquaculture." Master's thesis, ISA-UL, 2016. http://hdl.handle.net/10400.5/12133.

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Mestrado em Engenharia Alimentar - Instituto Superior de Agronomia - UL Lately the consumers have been more concerned with their health and well-being, and consequently, with their diet. Trends for the consumption of fishery products had increased, and as a result, aquaculture has become increasingly more important in this context. The meagre (Argyrosomus regius) is one of the largest Sciaenidae. The meagre is a fish with excellent biological characteristics for aquaculture, such as tolerance to a wide range salinity and high commercial value. The muscle quality is considered very good, with high protein content and low fat content. The present work has as a goal to study the impact of the season of capture in the quality of the meagre, namely the lipid fractions (the total lipids content, the lipids classes, and the fatty acids profile). Samples from November and April were analyzed. This analysis found that the meagre is a low fat fish. The chemical composition of the meagre presents some seasonality, the lipids fractions being the composition that varies the most along the year. The values of lipid content (8.6%), EPA (3.3%), and omega3/omega6 (1.1%) were significantly higher in autumn. In April the samples had more omega3 fatty acids, like the DHA (10.3%), and the omega-6, in particular LA (19.3%). It is therefore concluded that the meagre muscle in the autumn has a correlation with the feed

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Gao, Changhong. "A network model for capture of suspended particles and droplets in porous media." Curtin University of Technology, Faculty of Science and Engineering, Department of Petroleum Engineering, 2008. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=128222.

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Produced water presents economical and environmental challenges to oil producers. Downhole separation technology is able to separate oil or gas from produced fluid in downhole environment and injects waste water into deeper formations, thus saving energy and reducing waste emission. More than 120 downhole separation systems have been installed worldwide, but only about 60% of the installations achieved success. Most of the failures were due to the injectivity decline under the invasion of impurities in the injected water, such as suspended particles and oil droplets. A reliable model is needed to predict the reaction of reservoir permeability under the invasion of such impurities and serves as a tool to screen appropriate formations for downhole separator installations. Previous experimental studies on particle-induced permeability damage reveal that high particle concentration, low fluid velocity, large particle size lead to more severe damage. The damage mechanisms are attributed to surface interception, bridging and size exclusion of particles in porous media. While for droplets, the resultant permeability decline is mostly due to surface interception. Empirical correlations with key parameters determined by core flooding data are widely applied to the simulation of permeability decline under invasion of particles and droplets. These correlations are developed based on characteristics of certain rocks and fluids, thus their applications are very restricted. A more scientific method is to model the flow and capture of particulates at pore level. Reservoir rocks are porous media composed of pores of various sizes. Pore network models employ certain assumptions to imitate real porous media, and have been proved realistic in simulating fluid flow in porous media. In this study, a 2-dimensional square network model is used to simulate capture of particles and droplets in porous media. Pore bodies are represented by globes and pore throats are imitated with capillary tubes. The flow rates in the network are obtained by simultaneously solving mass balance equations at each pore body. The network model is tuned to match the porosity and permeability of a certain rock and serves as the infrastructure where the capture process takes place. Particles are categorized as Brownian and non-Brownian particles according to size. For Brownian particles, diffusion is dominant and Fick’s law is applied to each pore inside the network to obtain deposition rate. For non-Brownian particles, their trajectories are mainly governed by gravity and drag force acting on them. Besides, the size of each particle is compared with the size of the pore where it is captured to determine the damage mechanism. For particles much smaller than the pore size, surface deposition is dominant and the permeability decline is gradual. For particles with sizes comparable to pore size, bridging and clogging are dominant and the permeability decline is much more severe. Unlike particles, droplets can not be captured on top of each other. Accordingly, a captureequilibrium theory is proposed. Once the pore surface is covered by droplets, equilibrium is reached and droplets flow freely through porous media without being captured. The simulation on capture of oil droplets reveals that the surface wettability has significant influence on the resultant permeability damage. Most natural reservoirs are neutrally or oil wet. It is thus recommended to apply these surface conditions to future simulations. The proposed model is validated with test data and reasonably good agreements are obtained. This new mechanistic model provides more insights into the capture process and greatly reduces the dependence on core flooding data.

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Gouedard, Camille. "Novel degradation products of ethanolamine (MEA) in CO2 capture conditions : identification, mechanisms proposal and transposition to other amines." Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066193/document.

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Le captage du CO2 en postcombustion par absorption dans des solutions aqueuses d'amines est la technologie la plus mature pour réduire les émissions de gaz à effets de serre. Cependant, les amines utilisées sont susceptibles de réagir avec l'oxygène présent dans les fumées pour former de nouveaux composés qui peuvent être émis à l'atmosphère et avoir des conséquences sur l'environnement et la santé humaine.. L'objectif de cette thèse était donc d'identifier le maximum de produits de dégradation des amines grâce au développement de différentes techniques analytiques et d'échantillonnage, notamment pour l'analyse de la phase gaz. Ainsi plus de soixante produits issus de la dégradation de la monoéthanolamine (MEA) en pilote de captage du CO2 ont été identifiés. Une trentaine de ces produits sont nouveaux, ils sont souvent issus d'une même famille comme les pyrazines ou les oxazolines ou ils peuvent être caractérisés par l'allongement de la chaine carbonée (C2 entre deux hétéroatomes à C5).Des mécanismes basés sur des réactions d'alkylation/de désalkylation, la formation d'aldéhydes ou de cétones, l'amidification, l'aldolisation, la réaction d'Eschweiler Clarke, la formation de pyridines ont été proposés pour expliquer la formation de tous les nouveaux produits de dégradation et validés, dans la plupart des cas, en mélangeant les réactifs proposés dans le mécanisme. Finalement, il a été montré que la transposition de ces schémas réactionnels à trois autres amines (N-méthylaminoéthanolamine, 1-aminopropan-2-ol, 3-aminopropan-1-ol) a permis de prédire leurs produits de dégradation The CO2 post-combustion capture with aqueous solutions of amines is the most mature technology to reduce greenhouse gases emissions. However chemical absorption is suffering from the degradation of amines mainly due to the presence of O2 in flue gases. Formed products, which could be rejected to atmosphere, may be detrimental to environment and human health. The aim of this thesis was to identify as many degradation products as possible thanks to the development of different sampling and analytical methods especially for gas phase analysis. Thus more than sixty products issued from monoethanolamaine (MEA) degradation were observed in pilot plant samples. Thirty of them are novel, they often belong to the same family as pyrazines or oxazolines, or they could be characterized by the increase of carbon chain lengths (C2 between two heteroatoms to C5).Mechanisms such as alkylation/dealkylation, aldehydes/ketones formation, amidification, aldolisation, Eschweiler Clarke, pyridines formation were proposed to explain the formation of novel products and were, most of the time, validated by mixing the reactants proposed in the mechanism. Finally, it has been shown that the transposition of these reactions to three other amines (N-methylaminoethanolamine, 1-aminopropan-2-ol, 3-aminopropan-1-ol) enabled us to predict their degradation products

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ABE, ALFREDO Y. "Analise de transmutacao considerando o tratamento explicito dos produtos de fissao num sistema acoplado, composto pelos codigos Hammer-Technion e." reponame:Repositório Institucional do IPEN, 1990. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10231.

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Made available in DSpace on 2014-10-09T12:36:18Z (GMT). No. of bitstreams: 0 Made available in DSpace on 2014-10-09T13:59:17Z (GMT). No. of bitstreams: 1 03980.pdf: 2316245 bytes, checksum: 417b388f4f1b84fef2568b5807e84716 (MD5) Dissertacao (Mestrado) IPEN/D Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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Ljungberg, Henrik, and Linnea Sahlin. "How to capture hidden customer needs in an industrial product development company : A case study at Xylem." Thesis, KTH, Maskinkonstruktion (Inst.), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-157330.

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When product development is becoming more and more complex, development costs rising and shorter development times are demanded, it is becoming obvious that a good customer understanding is essential. Previous research has showed that those companies that wish to develop radically new products must work actively with the identification of their customers‘ hidden needs. The goal of this master thesis project has been to determine how an industrial product development company should proceed with the investigation of hidden customer needs. The purpose of the paper has been to evaluate existing processes, frameworks, and methods and then propose an optimal solution for the case company. The methodology for this master thesis has been a case study at Xylem where interviews with employees have been conducted in parallel with an examination of existing literature within the field. Xylem is an industrial product development company that develops water pumps for many different applications. Apart from interviews a workshop and field tests have been conducted to get a better picture of the case company‘s situation and to verify the proposed methods. The result was a proposed process in five steps, well integrated in Xylem‘s existing process for business development, together with methods which, taken from literature, have been developed especially for the identification of hidden customer needs. The proposal is based on barriers and constraints found in the empirical study. Many of the barriers were also identified in literature which led to the conclusion that similar companies will face many of the same problems. The result of the field tests showed that the proposed methods were successful according to the employees conducting them. They were perceived to be a good tool for Xylem to identify their customers‘ hidden needs and increase the innovative capability, thus increasing the chance of developing successful radically new products. Keywords: hidden customer needs, customer oriented innovation, voice of the customer, radical product development När produktutveckling blir alltmer komplex och utvecklingskostnaderna ökar samtidigt som kortare utvecklingstider efterfrågas blir det alltmer påtagligt att en god kundförståelse är extremt viktig. Tidigare forskning har visat på att företag som vill utveckla radikalt nya produkter bör arbeta aktivt med att identifiera sina kunders outtalade behov. Detta examensarbete har haft för avsikt att undersöka hur ett produktutvecklande industriföretag bör arbeta med identifieringen av outtalade kundbehov. Syftet med arbetet har varit att utvärdera befintliga processer, metoder och verktyg för att sedan föreslå en optimal lösning för fallföretaget. Metodiken för detta examensarbete har varit en fallstudie på Xylem där intervjuer av personal på fallföretaget har genomförts parallellt med att befintlig litteratur inom området har undersökts. Xylem är ett industriellt produktutvecklingsföretag som tillverkar pumpar för bl.a. vattentransport. Utöver intervjuer har en workshop samt fälttester utförts för att få en bättre bild av Xylems situation samt att testa de föreslagna metoderna. Resultatet var en föreslagen process i fem steg, väl integrerad i Xylems befintliga affärsutvecklingsprocess, med tillhörande metoder, vilka hämtade ur litteraturen har tagits fram speciellt för att identifiera outtalade kundbehov. Förslaget har baserats på barriärer och begränsningar som identifierades i den empiriska undersökningen. Många av de barriärerna identifierades också i litteraturen vilket ledde till slutsatsen att företag av den här typen står inför liknande problem. Resultatet av fälttesterna visade på att de föreslagna metoderna föll väl ut hos utövarna och uppfattades som användbara för Xylem i deras mål att bli bättre på att identifiera outtalade kundbehov och på så sätt öka deras innovativa förmåga och därmed chansen att utveckla framgångsrika radikalt nya produkter. Nyckelord: outtalade kundbehov, kundorienterad innovation, voice of the customer, radikal produktutveckling

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Nobre, JoÃo Adriano Ponciano. "Proposals for improvements in the process of product development for construction by the capture of customer information." Universidade Federal do CearÃ, 2005. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=3557.

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The objective of this research is to propose improvements in the civil construction product development process (PDP), making use of information arising from customers as way. This improvement is obtained through insertion of information about customers necessities in product development process. For this, theoretical approaches were made about civil constructionn sector characteristics and particularitities, about the importance of the captation of customer s information under marketing view and its translation in specifications to the product, and about the concept and use of product development. Initially, it was necessary to define what will be product development process in Civil Constructionl for, then, improvements can be proposed. Thus, from the study of case, carried in a builder enterprise of Fortaleza, research tools were made to be applied (on internet, builder store, by estate agents and building place) in order to catch customers necessities and desires. After the assessment about company managerial structure and interviews with managers, it was diagnosised the company s PDP. Through the tool Date flow Diagram (DFD), adapted to the survey necessities, it was possible to analyse the infomation flows from customers arising from each point of contact between they and the company. After the assessement of flows, the tools, to catch customers necessities, were made and its results were put in the company product development process. After this, new information flows were made with research tools proposed, and it was realized the creation of a direct communication channel to the company department responsible for products development. The use, formalized, of information from customers brought immediate results for the product that was being developed during the survey because allowed the precisely identification of items that add value to the undertaking. Este trabalho tem como objetivo propor melhorias ao processo de desenvolvimento de produto (PDP) da construÃÃo civil utilizando as informaÃÃes provenientes dos clientes como meio. Esta melhoria Ã conseguida mediante a inserÃÃo das informaÃÃes a respeito das necessidades dos clientes no processo de desenvolvimento de produto. Para isso, foram feitas abordagens teÃricas sobre as caracterÃsticas e particularidades do setor de construÃÃo civil, acerca da importÃncia caracterÃsticas e particularidades do setor de construÃÃo civil, acerca da importÃncia da captaÃÃo das informaÃÃes dos clientes Ã luz do marketing e a traduÃÃo destas em especificaÃÃes para o produto, e do conceito e prÃtica do desenvolvimento de produto. Inicialmente, foi necessÃrio definir o que seria o processo de desenvolvimento de produto na construÃÃo civil para, a partir desse ponto, se poder propor melhorias. Sendo assim, atravÃs do estudo de caso realizado em uma construtora de Fortaleza, foram desenvolvidas ferramentas de pesquisa que tiveram contato deste com a empresa (loja, obra, Internet, corretor). ApÃs a anÃlise da estrutura organizacional da empresa e da realizaÃÃo de entrevistas com os intervenientes, diagnosticou-se o PDP existente. Por meio da ferramenta Diagrama de Fluxo de Dados (DFD), adaptada Ãs necessidades da pesquisa, pÃde-se analisar o fluxo de informaÃÃes provenientes dos clientes nos diversos pontos de contato deste com a empresa. ApÃs a anÃlise dos fluxos, foram criadas as ferramentas para captaÃÃo das necessidades dos clientes e os seus resultados foram inseridos no processo de desenvolvimento de produto da empresa. Em seguida, foram montados novamente os fluxos de informaÃÃes, agora coma s ferramentas propsotas, e se verificou a criaÃÃo de um canal de comunicaÃÃo direto com o setor da empresa responsÃvel pelo desenvolvimento de produtos. A formalizaÃÃo da utilizaÃÃo das informaÃÃes provenientes dos clientes trouxe resultados imediatos para o produto que estava em desenvolvimento durante a pesquisa, pois se identificou com maior precisÃo o fato de que itens agregavam valora ao empreendimento.

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Ganesh, Koushik, and Kumar Prithivraj Pravin. "Mapping of development process for Tacit knowledge transfer in Product development organization : Knowledge management in change managent." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Produktutveckling, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-35348.

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The thesis is focused on developing a set of work standards or framework to the company, Isaberg Rapid which has changed its parent company and because of it lost many of its experienced employees. Subsequently a lot of implicit knowledge is lost along with the employees, which later became evident when challenges recurred in production. The aim of the research project is to create a proof methodology to avoid this loss by storing this tacit knowledge for any references, even if the employees involved with the product are lost.

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Gudjonsson, Knutur. "Iterative Business Model Innovation : Exploring a Holistic Framework in Order to Create and Capture New Value." Thesis, Linköpings universitet, Företagsekonomi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-97540.

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Background: There is an increasing amount of arguments made that new business models are the solution when companies and industries face radical changes in the environment. To be able to prosper in the long run, organizations must reinvent themselves over and over again. Many authors (e.g. Abernathy & Utterback, 1978; Christensen, 1997; Kim & Mauborgne, 2005; Ries, 2011) claim that big, radical, reconfigurations are needed in order to prosper in the long-term. Theories, concepts and framework have been developed to answer how this reconfiguration should happen within organizations. However, the concepts derived are just parts of the solution, and none take a holistic approach, trying to cover them in a practical framework that could be used by organizations. Aim: The aim of the thesis is to propose a framework that enables organizations to systemize their innovation processes, making them flexible enough to repetitively seize opportunities through business model innovation where new value can be created and captured. The proposed framework aims to enable organizations to start discussing how they should create and capture new value and give them a more pragmatic view on the innovation process. It also aims to act as a starting point for future research. Methodology: The thesis follows March & Smith’s (1995) design science methodology in order to build and evaluate the framework. This is done in three steps; first by building a model from theory. Second, the emergence of business models in three different case companies are compared and investigated qualitatively. Lastly the model and the factors derived from the data are contrasted and a framework is built and evaluated. Findings & Conclusion: The basis of the derived framework proposes for big steps to change, and create and capture new value; analyze the basis of competition in the macro and micro environment, analyze and experiment with different non-customer tiers, experiment with the creation of value and experiment and analyze the capture of the value created. More tangible tools are proposed for each of these steps. Actually testing the framework and further evaluating and theorizing of the framework is proposed as future research directions.

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Kilduff, David Patrick. "Cobia (Rachycentron canadum) Aquaculture: Captive Growth Rates and Product Quality Evaluation." W&M ScholarWorks, 2001. https://scholarworks.wm.edu/etd/1539617775.

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Santos, William Rodrigues dos. "Análise técnica de um sistema de captura de movimentos integrado com um software de modelagem e simulação humana." Universidade Federal de São Carlos, 2014. https://repositorio.ufscar.br/handle/ufscar/3753.

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Made available in DSpace on 2016-06-02T19:52:04Z (GMT). No. of bitstreams: 1 5892.pdf: 5880561 bytes, checksum: db40111a324a7986148a35761e5c50a4 (MD5) Previous issue date: 2014-02-17 Financiadora de Estudos e Projetos The Motion Capture technology is considered a potential to overcome the limitations of traditional human simulation, reducing the time spent on creating and assigning greater reality simulations the simulated movements. This research presents an analysis of a technical system, formed by integrating a Motion Capture System with a human model and simulation software, aiming to establish ways to use the system in project process, contextualized by ergonomics. Different configurations of the main steps of the integration of the Motion Capture System Moven (Xsens), integrated with CAD DELMIA (Dassault Systèmes) software, which has a module of human simulation (Human Builder), through four experimental tests. Four trials were defined with factorial design to test the combination of different possible system configurations: i) spatial positioning of virtual environments, ii) mitigation of drift, iii) digital human kinematics and iv) anthropometric compatibility. From the results obtained in each test operating procedures were constructed in order to solve the problems and limitations of using these integrated technologies. The following procedures show how to configure the integrated system for positioning a virtual environment in a CAD system known coordinates, which enables the correction of the position due to drift of the capture system. Procedures that relate to the possible interactions between the body and capture the workplace, with the characteristics of the activity and the objectives of the simulation were also created. In addition, it was elaborated a systematic iterative to match the anthropometry between real human being, avatar of the capture system and digital human. The development of ways to use these technologies provides improvement of techniques used to construct the simulation, contributing to integration the perspective of future activity in the design in the design of productive situations. A tecnologia de Captura de Movimentos é considerada potencial para superar as limitações da simulação humana tradicional, reduzindo o tempo despendido na criação de simulações e atribuindo maior realidade aos movimentos simulados. Esta pesquisa apresenta uma análise de um sistema técnico, formado pela integração de um Sistema de Captura de Movimentos com um software de modelagem e simulação humana, visando estabelecer formas de utilização do sistema no processo de projetos, contextualizados pela ergonomia. São analisadas diferentes configurações das principais etapas do processo de integração do Sistema de Captura de Movimentos Moven (Xsens), integrado com software CAD DELMIA (Dassault Systèmes), que possui um módulo de simulação humana (Human Builder), através de ensaios experimentais. Foram definidos quatro ensaios com delineamento fatorial para testar a combinação das diferentes configurações possíveis do sistema: i) posicionamento espacial de ambientes virtuais, ii) mitigação do drift, iii) cinemática do manequim digital e iv) compatibilidade antropométrica. A partir dos resultados obtidos em cada ensaio foram construídos procedimentos operacionais de configuração do sistema integrado, para equacionar as limitações e problemas de utilização destas tecnologias integradas. Os procedimentos mostram como configurar o sistema integrado, para posicionar um ambiente virtual em um sistema de coordenadas CAD conhecido, que possibilita a correção do posicionamento, devido ao drift do sistema de captura. Também foram criados procedimentos que relacionam as interações possíveis, entre o corpo de captura e o ambiente de trabalho, com as características da atividade e os objetivos da simulação. Além disso, foi elaborada uma sistemática iterativa para compatibilizar a antropometria entre o ser humano real, avatar do sistema de captura e o manequim digital. O desenvolvimento de formas de uso destas tecnologias proporciona melhoria das técnicas utilizadas para construção das simulações com manequins digitais, contribuindo para inserção da perspectiva da atividade futura no projeto das novas instalações.

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Cuccia, Lorena. "Evaluation et suivi de solvants innovants pour le captage de CO2 présentant une faible pénalité énergétique (<10 %) : développement de stratégies analytiques permettant la compréhension des phénomènes physico-chimiques mis en jeu en vue de leur modélisation." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS025/document.

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Le procédé de captage du CO2 en post-combustion par absorption chimique est aujourd'hui la technologie la plus mature en vue d'une réduction des émissions de CO2 issues de procédés industriels. Les deux principales limitations de la technologie sont la pénalité énergétique engendrée par le procédé, et la formation de produits de dégradation potentiellement toxiques pour l'Homme et l'environnement. Dans le cadre de ce projet de thèse, trois solvants innovants ont été présélectionnés pour leurs bonnes propriétés thermodynamiques de captage : les mélanges 1-méthylpipérazine / pipérazine (1MPZ /PZ), diméthylaminoéthanol / pipérazine (DMEA/PZ) et méthyldiéthanolamine/monoéthanolamine (MDEA/MEA). Ces trois solvants ont été étudiés en termes de stabilité chimique dans des conditions représentatives des conditions industrielles du captage de CO2 en post-combustion sur un dispositif expérimental construit par EDF R&D Chatou. Des méthodes analytiques complémentaires impliquant les chromatographies liquide et gazeuse ont été développées dans l'objectif de suivre les teneurs en amines constituantes du solvant au cours du temps, et d'identifier et quantifier les potentiels produits de dégradation formés aussi bien dans la phase liquide du solvant que dans les fumées traitées émises. Au vu des résultats obtenus au cours de ce projet, le solvant MDEA/MEA semble offrir le meilleur compromis en termes de stabilité chimique et de besoins énergétiques requis pour le procédé. Ce solvant présente des taux de dégradation inférieurs aux mélanges 1MPZ/PZ et DMEA/PZ, et permettrait une réduction de l'énergie au rebouilleur de l'ordre de 10 % par rapport à la MEA 30 %, solvant modèle au procédé Post-combustion CO2 capture using amine solvents is nowadays the most promising technology to limit the CO2 emissions from already existing power plants. The two main limitations of the process are the high energy penalty and the irreversible degradation of amines involving the formation of degradation products potentially toxic for human and the environment. Within the scope of this project, three innovative solvents were selected for their good thermodynamic properties for CO2 capture: the blends 1-methylpiperazine / piperazine (1MPZ/PZ), dimethylaminoethanol / piperazine (DMEA/PZ) and methyldiethanolamine/monoethanolamine (MDEA/MEA). The three blends were degraded in conditions representative of industrial conditions for post-combustion CO2 capture on a lab scale pilot plant constructed by EDF R&D. Complementary analytical methods involving gas and liquid chromatography were developed in order to monitor the stability of the constituent amines, and to identify and quantify potential degradation products formed. These methods permitted the characterization of both the liquid phase of the solvent and the gaseous phase corresponding to the treated flue gas. Results obtained during this project showed that the blend MDEA/MEA would offer the best compromise in terms of chemical stability and energy needed for the process. This solvent presents degradation rates lower than the blends 1MPZ/PZ and DMEA/PZ and would enable a reduction of the reboiler heat duty in the range of 10% when compared to MEA 30% the benchmark solvent of the process

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Liu, Xingjian. "The rise and fall of cities in a global urban network as captured by the locational strategies of advanced producer services firms." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648207.

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SEMMLER, RENATO. "Montagem e calibracao de um novo arranjo experimental para a producao e utilizacao de radiacao gama de captura." reponame:Repositório Institucional do IPEN, 1993. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10315.

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Made available in DSpace on 2014-10-09T12:37:14Z (GMT). No. of bitstreams: 0 Made available in DSpace on 2014-10-09T14:09:04Z (GMT). No. of bitstreams: 1 04783.pdf: 1232325 bytes, checksum: c8fd8eb06b52eca9b9846e965159285b (MD5) Dissertacao (Mestrado) IPEN/D Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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Fife, Nathaniel Luke. "Developing a Design Space Model Using a Multidisciplinary Design Optimization Schema in a Product Lifecycle Management System to Capture Knowledge for Reuse." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd742.pdf.

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Sjoberg, Elf Julia, and Espinosa Kristoffer Wannheden. "Carbon capture and utilisation in the steel industry : A study exploring the integration of carboncapture technology and high-temperature coelectrolysisof CO2 and H2O to produce synthetic gas." Thesis, KTH, Energiteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-226729.

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The present thesis studies the potential for introducing the technology of co-electrolysis of carbondioxide (CO2) and water (H2O) through a Solid Oxide Electrolyser Cell (SOEC) in a top gas recyclingblast furnace (TGR-BF) in a steel plant. TGR-BF, commonly presented in literature as a promisingcarbon capture and storage (CCS) pathway for the steel industry, can drastically decrease theseemissions by successively recycling up to 90 % of the top gas from a blast furnace (EU, 2014) andsequestering the CO2 from the highly carbon concentrated remaining top gas. Blast furnaces (BF)represent about 20 % of the total carbon dioxide emissions of a steel plant (Carpenter, 2012). Based onthe current research status of SOEC, this report aims at exploring the utilisation of carbon dioxidecaptured from TGR-BF through a simultaneous electrolysis of CO2 and H2O, a novel and highly efficientpathway of producing valuable synthetic gas (syngas), used in chemical and industrial applications.It is important to note that neither of the technologies is yet in commercialisation phase, and that thesuggested installation would presently not be possible, but nevertheless provides an interesting pathwaytowards closing the carbon cycle of steelmaking. To give an idea of the magnitude of the SOECinstallation and its syngas production if combined with TGR-BF, an analysis of existing case studies ofeach technology was made. The SOEC system modelled by Fu et al. (2010) was scaled to fit the CO2emissions of Ruukki Metals steel plant in Raahe, Finland, for which data is abundant and reliable. Tohighlight the integration potential of the two separate technologies, a conceptual process flow chart wasdesigned and a literature review of the respective technologies performed, allowing the identification ofintegration challenges, presented in the analysis. The literature study reveals that challenges for thesystem include: gas purity requirements, gas composition requirements, scalability, life-timecompatibility, plant complexity and high variation of plant infrastructure. In the discussion, difficultiesrelated to a technology shift in a traditional industry are considered. For further research, mathematicalmodelling of thermodynamics of the system as well as an economic assessment are recommended. Följande studie utforskar potentialen att implementera co-elektrolys av koldioxid (CO2) och vatten(H2O) genom en fastoxid elektrolyscell (SOEC) i en masugn där återvinning av masugnsgasen tillämpasgenom s.k. Top-Gas Recycling Blast Furnace (TGR-BF). Masugnen representerar omkring 20 % av detotala koldioxidutsläppen från ett stålverk (Carpenter, 2012) varför TGR-BF i flera studier beskrivs somen lovande teknik för avskiljning och lagring av koldioxid (CCS) i stålindustrin. TGR-BF har potentialenatt drastiskt minska utsläppen genom att återvinna upp till 90 % av masugnsgasen (BFG) och avskiljningav koldioxid från den CO2-rika gasen som återstår. Genom att kartlägga den senaste forskningen inomSOEC och analysera resultat från försöksanläggningar som tillämpar TGR-BF syftar denna studie attutforska möjligheten för ett kombinerat system där koldioxiden från masugnsgasen, genom en simultanco-elektrolys av CO2 och H2O, används för syntesgasproduktion; en viktig gas i många kemiska ochindustriella tillämpningar.Det är viktigt att poängtera att ingen av de två teknikerna idag är kommersialiserade och att enintegration av dessa för tillfället därför inte är genomförbar, men att studien tillhandahåller en intressantmöjlighet för minskade koldioxidutsläpp för stålindustrin. För att undersöka skalbarheten mellan de tvåteknikerna genomfördes en fallstudie på Ruukki Metal’s stålverk i Raahe, Finland kombinerat med ettSOEC-system som tillämpats av Fu m.fl. (2010) i deras modellering av syntesgas genom co-elektrolys.Fallstudien uppskattar att 2838 ton syntesgas per dag skulle kunna produceras från den infångadekoldioxiden i stålverket Raahe, Finland. Ett konceptuellt flödesschema utformades för att åskådliggöraintegrationspunkterna för de två teknikerna. En litteraturstudie gjordes i syfte att förstå vilka utmaningaren sådan integration skulle innebära. Dessa utmaningar, tillsammans med utmaningar för de två enskildateknikerna, presenteras i analysen. Litteraturstudien påvisade att utmaningar för det integrerade systemetinkluderar: krav på gasernas renhet samt sammansättning, systemens skalbarhet, livstid samtkomplexiteten och variationen mellan olika stålverk. Analysen och diskussionen behandlarsvårigheterna med stora teknikskiften i en traditionell industri. För vidare studier rekommenderas enmatematisk modellering av systemet där termodynamiska och ekonomiska aspekter behandlas.

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Parker, Pauline Olivia. "The effect of product integration on performance post acquisition : factors influencing the capture of value in the case of highly acquisitive firms in the business software industry." Thesis, Kingston University, 2015. http://eprints.kingston.ac.uk/32218/.

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Building on behavioural theory with dynamic capabilities, I have studied how firms create competitive advantage through innovation over time after multiple mergers and acquisitions. This research is focused on the acquirer’s ability towards obtaining performance from product integration and set within the context of highly acquisitive software-houses, those organisations involved in the sales and manufacture of business software products. Within high technology industries, resources are at the heart of the firm and constitute the largest cost. Dynamic capabilities are a more recently extended RBV of the firm to incorporate dynamic markets, I,e, firms in situations of rapid change. In these markets, where the competitive landscape is shifting, the dynamic capabilities by which firm managers integrate, build, and reconfigure internal and external competencies to address rapidly changing environments. To this end, I test the dynamic capabilities theory in the high tech software industry in times of change. In 2012, software firms completed over $66 billion of mergers and acquisitions (Berkery Noyes, 2013). However research suggests that synergies are often left unrealised (Barkema and Schijven, 2008; Léger and Quach, 2009). In addition, the software industry is maturing and the mergers and acquisition activity in the industry has intensified (Léger and Quach, 2009). The highly acquisitive company - seeking rapid growth and using acquisitions as the means to achieve this, is using a recognised route to growth (Damodaran, 2004). In a report from PwC (2014) Rob Fisher, the PwC US technology industry leader notes that With software embedded in virtually everything, software and Internet sector [mergers and acquisitions] deal activity continues to flourish, offsetting declines in other subsectors.” (PWC, 2013): In this longitudinal research I describe, explain and account for the impacts of mergers and acquisitions on innovation, expressed through product integration; - the reconfiguring and combination of the product portfolios within software firms. Concerning the acquiring firm's endogenous growth (the creation of value through internal resource capability), I explain the relationship between organisation capabilities and the innovation outcome as well as the innovation effect on revenue. I find that the dynamic capabilities framework is a suitable for complex empirical study. In addition I find that while the measures including the measured capabilities directly effect product integration and revenues. By using mediation techniques, I also find that revenues are indirectly affected by product integration. Interestingly product integration, negatively impacts the financial performance of the firm. These findings are important for managerial decision making and imply a high level of orchestration requirement. According to the Business Software Alliance, BSA (2008), the software sector has enjoyed meteoric growth. In 2007, the software and related services sector experienced a real annual growth rate of 14%, while the business sector was considerably less. This is reflected by the business, SunGard (2009) who grew endogenously by only 1%. In light of the business problem, I concentrate on highly acquisitive software firms, i.e. those firms seeking growth through acquisition. I conceptualise product integration innovation as a second stage process of organisation integration. I have tested my theory using panel data of highly acquisitive firms, which have undertaken in excess of 900 events over a ten-year period.

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Barbosa, Renato Dias. "Influência dos parâmetros reacionais e da composição dos transportadores de oxigênio, aplicáveis aos processos de combustão e reforma do metano, com recirculação química." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/97/97137/tde-24032015-172457/.

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Impulsionados pela busca de fontes limpas de energia, surgem os processos de combustao com recirculacao quimica (CLC), e reforma com recirculacao quimica (CLR). CLC e CLR sao processos quimicos para oxidacao de hidrocarbonetos gasosos. E utilizada a acao de transportadores de oxigenio (TO), para transferir oxigenio do ar para o combustivel (neste caso o metano), evitando-se o contato direto entre ar atmosferico e metano por diversos motivos. Os TOs, compostos por oxidos metalicos na forma de po fino, circulam continuamente entre dois reatores de leito fluidizado (reator de ar e de combustivel), sofrendo sucessivos ciclos de reducao e oxidacao. Os processos se diferenciam com relacao aos produtos, em CLC objetiva-se a geracao de energia, atraves da oxidacao completa do combustivel, resultando em uma mistura de CO2 e H2O, podendo ser facilmente separada por condensacao. No caso do CLR a oxidacao ocorre de maneira parcial, dando origem a uma mistura de gas de sintese (H2 + CO). O CLC apresenta vantagens com relacao aos processos tradicionais de captura de CO2, pois nao se faz necessaria a utilizacao de processos secundarios para separacao gasosa, economizando assim energia, alem do fato de nao gerar gases do tipo NOx. O presente trabalho apresenta a preparacao de duas series de materiais, via impregnacao seca, uma com composicao 2, 4 e 8% m/m de oxido de niquel e outra com os mesmo teores de oxido de niobio, suportados sobre alumina comercial de alta area superficial especifica. Os materiais foram caracterizados pelas tecnicas de picnometria a helio, volumetria de nitrogenio, porosimetria por intrusao de mercurio, DRX, MEV, TPR 5%H2/N2 analisado com TCD em ChemBet, TPR 5%CH4/Ar e TPO 5%O2/Ar sendo a variacao de massa analisada em termobalanca (TGA/DSC), alem de se utilizar de espectrometria de massas para analise dos gases gerados. Os diferentes transportadores de oxigenio foram testados em reator de leito fixo, sendo avaliados em diferentes condicoes experimentais tais como: temperaturas de operacao, vazoes de reagentes gasosos, concentracoes de metano, adicao de CO2 e H2O ao combustivel. Os produtos da reacao no reator de leito fixo foram analisados por cromatografia gasosa e espectrometria de massa. Os resultados mostraram que; o deposito de carbono sobre o catalisador pode ser drasticamente reduzido com a adicao de mistura oxidante junto ao combustivel e que estes oxidos estudados tem potencial aplicacao industrial, mostrando-se seletivos para reforma do metano com consecutiva producao de gas de sintese. Driven by the demand for clean energy sources, arise chemical-looping combustion - CLC, and chemical-looping reforming - CLR. CLC and CLR are chemical processes for oxidation of gaseous hydrocarbons. Both of them use the action of catalysts, here called oxygen carriers (OC), which transfers oxygen from the air to the fuel (in this case methane), avoiding the direct contact between the two gases for various reasons. The OC\'s are composed of metal oxides in the form of fine power, circle continuously between two fluidized bed reactors (fuel reactor and air reactor), suffering successive cycles of reduction and oxidation. The two processes differ in relation to the products; the aim of CLC is generation of energy (heat), through the complete oxidation of the fuel, resulting in a mixture of CO2 and H2O, which can be easily separated by condensation. In the case of CLR, the oxidation occurs partially, resulting in synthesis gas, a mixture of H2 and CO. The CLC processes shows advantages when compared to other traditional processes for capture of CO2, because it is not necessary to use secondary processes for gas separation, saving energy, besides the fact of no NOx is generated. This work describes the preparation of two series of materials via dry impregnation, which are composed of 2, 4 and 8% w/w niobium oxide or nickel oxide, supported on commercial alumina, with high specific surface area. The materials were characterized by the techniques of helium pycnometry, nitrogen volumetry, mercury intrusion porosimetry, DRX, MEV, TPR 5% H2/N2 analyzed with TCD in ChemBet, TPR 5% CH4/Ar and TPO 5% O2/Ar, being the changes in mass and heat analyzed in a thermogravimetric balance (TGA/DSC) coupled to a mass spectrometer permitting the analysis of the generated gases. The different oxygen carriers were tested in a fixed bed reactor, evaluated in different experimental conditions, such as operation temperature, flow rate of gaseous reactants, methane concentrations, addition of CO2 and H2O to the fuel. The products of the reaction in the fixed bed reactor were analyzed by gas chromatography and mass spectrometry. The results show that: the carbon deposits over the catalysts can be drastically reduced by addition of oxidizing mixture together to the fuel and these studied oxides have a potential industrial application, showing selectivity to reforming of methane with consecutive synthesis gas production.

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Savary, Michael. "Prévision de la turbidité par apprentissage statistique : application au captage AEP d'Yport (Normandie)." Thesis, Normandie, 2018. http://www.theses.fr/2018NORMR091/document.

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Près de 25% de la population mondiale est alimentée par de l’eau en provenance d’aquifères karstiques. La compréhension et la protection de ces derniers apparait donc comme essentielle dans le cadre d’une augmentation des besoins en eau potable. De plus, une contamination des forages d'alimentation en eau potable par une eau turbide peut s'avérer fortement dommageable car entrainant une possible contamination des populations desservies. Dans le cas de la Normandie, des coupures régulières son nécessaires afin de préserver la santé des habitants. La modélisation et la prédiction des augmentations de turbidité apparaissent comme un travail difficile du fait des nombreux phénomènes et paramètres régissant la turbidité ainsi que la non-linéarité de la réponse entre les précipitations et la turbidité. Peu de modèles à l'heure actuelle ont été proposés pour représenter la relation liant la turbidité avec les précipitations. C'est ainsi, en s'intéressant au forage AEP d'Yport responsable de l'alimentation en eau potable de la ville du Havre, que nous proposons une application des réseaux de neurones pour la prévision de la turbidité. Durant les travaux de thèse, nous avons mis en avant la nécessité d'effectuer des campagnes d'échantillonnages des produits phytosanitaires afin de permettre l'identification des éventuels proxies des produits phytosanitaires tel que la turbidité, les précipitations ou bien la conductivité. Par la suite, les travaux effectués dans cette thèse nous ont permis (i) de monter que les modèles par réseaux de neurones permettent de prévoir à 12h et 24h les variations de turbidité, (ii) de tester plusieurs voies d'amélioration de ces modèles, (iii) d'intégrer l'analyse multirésolution aux modèles par réseaux de neurones et pour finir (iiii) d'identifier un semi proxy des contaminations en produits phytosanitaires Approximately 25% of the world's population is supplied by water from karstic aquifers. The understanding and protection of these appears to be essential in the context of drinking water needs increasing. In addition, contamination of drinking water by turbid water can be highly damaging by resulting in possible contamination of the served populations. In the case of Normandy, regular drinking water cut-off are necessary to preserve the health of the inhabitants. The modeling and prediction of turbidity event appears as a challenging work because of the number of phenomenon and parameters involves in turbidity variation as well as the non-linearity of the link between rainfall and turbidity. Actually, few models have been proposed to represent the relationship between turbidity and rainfall. In this context, by focusing on Yport's pumping well which is responsible for Half of Le Havre city drinking water supply, we propose an application of neural networks for turbidity prediction. During this thesis work, we emphasized the need to carry out sampling campaigns for phytosanitary products to enable the identification of possible phytosanitary product proxies such as turbidity, rainfall or conductivity. Subsequently, the work carried out in this thesis enabled us to (i) designed neural network models allow to predict at 12h and 24h the turbidity variations, (ii) test several ways to improve these models, (iii) integrate multiresolution analysis into neural networks models and finally (iiii) identify a semi proxy for phytosanitary product contamination

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Sousa, Ana Filipa Caseiro Pinto. "Radioactividade em algumas espécies de pescado, da zona de captura do Atlântico Nordeste, consumidas em Portugal." Master's thesis, Universidade Técnica de Lisboa. Faculdade de Medicina Veterinária, 2008. http://hdl.handle.net/10400.5/484.

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Dissertação de Mestrado em Saúde Pública Veterinária Este trabalho apresenta os resultados da monitorização da actividade do polónio (210Po), chumbo (210Pb), potássio (40K) - radionuclidos de origem natural - e do césio (137Cs) - radionuclido de origem artificial -, durante 4 meses (de Janeiro a Abril de 2006), no carapau (Trachurus trachurus), na sardinha (Sardina pilchardus), na pata-roxa (Scyliorhinus canicula), na sarda (Scomber scombrus) e na faneca (Trisopterus luscus). As amostras analisadas compreendem o tecido muscular, o fígado e as gónadas das espécies referidas, capturadas no Atlântico Nordeste, ao largo da zona de Peniche. A concentração do polónio nestas amostras foi sempre mais elevada que a dos outros radionuclidos. Este radionuclido acumula-se preferencialmente nas vísceras e, sobretudo, no fígado. Tendo em conta as taxas de consumo anuais destas espécies, e o seu lugar na dieta, foi calculada a dose de radiação para o consumidor devida à ingestão dos radionuclidos acima referidos. Concluiu-se que a maior contribuição para a dose de radiação é devida ao 210Po, sendo comparativamente muito pequena a contribuição do principal radionuclido de origem artificial, o 137Cs. Não há, pois, no presente um risco de exposição da população Portuguesa às radiações ionizantes pelo consumo dos produtos da pesca. ABSTRACT: This work shows the results of environmental radioactivity monitoring of polonium (210Po), radioactive lead (210Pb), radioactive potassium (40K) – radionuclides of natural origin – and radioactive cesium (137Cs) – radionuclide of artificial origin. Measurements were made during 4 months (from January till April 2006), on the Atlantic horsemackerel (Trachurus trachurus), the sardine (Sardina pilchardus), the small-spotted catshark (Scyliorhinus canicula), the Atlantic mackerel (Scomber scombrus) and the pouting (Trisopterus luscus). Samples analysed include muscle tissue, liver and gonad of all fish species mentioned above, from captures in the North-East Atlantic off Peniche. 210Po concentration in tissue samples was always higher than concentrations of other radionuclides. Furthermore, 210Po accumulates more in the fish viscera, specially in the liver. Taking into account the annual consumption rates of these species, and its role in Portuguese diet, the radiation dose to consumers through ingestion of those radionuclides was computed. It is concluded that the main contribution for the absorbed radiation dose to consumers is due to 210Po and the radiation dose for 137Cs is comparatively small. At the present, there is no significant ionising radiation exposure risk to the Portuguese population through consumption of fish products.

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Lima, Ineuda Maria Alves Ferreira. "Uma abordagem ergon?mica para an?lise da qualidade do pescado, desde sua captura ao seu desembarque na praia, resultante da atividade dos jangadeiros de Ponta Negra - Natal/RN." Universidade Federal do Rio Grande do Norte, 2014. http://repositorio.ufrn.br/handle/123456789/19360.

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Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2015-11-11T12:08:46Z No. of bitstreams: 1 IneudaMariaAlvesFerreiraLima_DISSERT.pdf: 4870871 bytes, checksum: 69b7be6db9803797ce683a1e6dded30c (MD5) Approved for entry into archive by Elisangela Moura (lilaalves@gmail.com) on 2015-11-11T15:21:09Z (GMT) No. of bitstreams: 1 IneudaMariaAlvesFerreiraLima_DISSERT.pdf: 4870871 bytes, checksum: 69b7be6db9803797ce683a1e6dded30c (MD5) Made available in DSpace on 2015-11-11T15:21:09Z (GMT). No. of bitstreams: 1 IneudaMariaAlvesFerreiraLima_DISSERT.pdf: 4870871 bytes, checksum: 69b7be6db9803797ce683a1e6dded30c (MD5) Previous issue date: 2014-05-21 A atividade de pesca artesanal, a qual envolve fatores de ordem hist?rico-culturais, ambientais, sociais, pol?ticos, econ?micos, dentre outros, apresenta-se atualmente como importante fonte de renda, gera??o de trabalho e alimento, al?m de estar contribuindo para a perman?ncia do homem no seu local de origem. Entretanto, seu produto, o pescado, considerado um dos alimentos mais perec?veis, necessita de um manejo e conserva??o adequada desde a captura at? a sua comercializa??o para retardar o processo de deteriora??o. Desse modo, esta disserta??o tem o objetivo de estudar o efeito das pr?ticas de manipula??o na qualidade do pescado, desde a captura ao seu desembarque na praia, resultante da atividade dos jangadeiros de Ponta Negra - Natal/RN com o intuito de analisar a qualidade do pescado e propor recomenda??es para a sua manipula??o adequada e poss?veis solu??es a fim de agregar valor ao produto, por meio da melhoria da qualidade e Boas Pr?ticas de Manipula??o. Para tanto, utilizou-se a metodologia baseada na An?lise Ergon?mica do Trabalho por meio de t?cnicas observacionais e interacionais com o grupo de foco, os jangadeiros, para compreender a atividade jangadeira e avaliou-se o frescor e qualidade do pescado mediante an?lise sensorial e par?metros microbiol?gicos e f?sico-qu?micos existentes na legisla??o Portaria n? 185, de 13 de Maio de 1997 e o RIISPOA - alterado em 01 de dezembro de 2007 e a RDC N? 12, de 2 de janeiro de 2001. De acordo com os resultados obtidos em an?lises laboratoriais, pode ser constatada, a qualidade aceit?vel do pescado conforme os par?metros existentes nas normas e regulamenta??es vigentes, n?o obtendo deteriora??o significativa decorrente da m? manipula??o e conserva??o inadequada do mesmo. The artisan fishing activity, which involves historical - cultural, environmental, social, political, economi c, among other factors, presents, nowadays, as an important source of income, creating jobs and food, contributing to the permanence of man in their own birthplace. However, the fish, considered one of the most perishable foods, requires a proper handling and conservation, from capture to its availability in the market, in order to slow the deterioration process. Thereby, this dissertation aims to study the effect of the manipulation practices on fish quality, from capture to its landing on the beach, resul ting from fisherman?s activity from Ponta Negra - Natal/RN. It also presents the purpose of analyzing the quality of the fish and propose recommendations for their proper handling and possible solutions to add value to the product, through the improvement of the quality and good handling practices. For this purpose, the methodology used was based on ergonomic analysis of their work through observational techniques and interactional with the focus group, the jangadeiros, to understand their activity and eval uated the freshness and quality of the fish by sensory analysis, and microbiological parameters and physicochemical from existing legislation Ordinance No. 185 of May 13, 1997 and RIISPOA - amended on December 1, 2007 and RDC No. 12, dated January 2, 2001. According to the results obtained in laboratory tests, it can be established, the acceptable quality of fish as the existing rules and regulations parameters , not getting significant deterioration caused by poor handling and improper storage of fish.

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Junior, Carlos Alberto de Freitas Pereira. "Geração de aplicações para linhas de produtos orientadas a aspectos com apoio da ferramenta Captor-AO." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/55/55134/tde-04032009-152258/.

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Uma Linha de Produtos de Software (LPS) consiste de um conjunto de sistemas de software que compartilham características comuns e satisfazem às necessidades específicas de um segmento particular. Para tornar o processo de instanciação de produtos mais rápido e menos suscetível a erros, o projeto de uma LPS pode adotar a utilização de geradores de aplicação, que podem gerar os artefatos da LPS utilizando uma especificação das variabilidades de um certo produto. Adicionalmente, notase que determinadas características transversais de uma linha de produtos têm potencial de reúso em diferentes domínios, podendo ser implementadas usando a programação orientada a aspectos (POA). Neste trabalho é proposto um processo para o desenvolvimento de LPS e geração automatizada de produtos levando em consideração os interesses transversais existentes em cada domínio de aplicação. Os interesses transversais são as características comuns espalhadas pelas divisões ou módulos do programa de diferentes domínios. O processo aqui proposto tem a finalidade de aumentar o reúso de características de linhas de produtos por meio da POA, permitindo que as LPSs sejam projetadas de forma mais coesa e, consequentemente, facilitando sua manutenção e evolução. Visando diminuir o esforço necessário para a instanciação dos produtos provenientes dessas linhas de produtos, neste trabalho também é apresentada uma extensão do gerador Captor, denominada Captor-AO. Esse gerador fornece suporte ao processo proposto, permitindo a criação de produtos formados por características de diferentes domínios. Por fim, é apresentado um estudo de caso em que é realizada a configuração de um domínio transversal para o interesse de persistência, a definição de um domínio-base compatível com esse domínio transversal e a geração de produtos formados pelas características de ambos os domínios utilizando o gerador estendido Captor-AO A Software Product Line (SPL) consists of a set of software systems that share common features and fulfill the specific requirements of a particular domain. In order to make the products instantiation process faster and less prone to errors, the project of a SPL can adopt the utilization of application generators, which can can automatically generate the SPL artifacts based on the specification of the variabilities of a particular product. Additionally, it can be noticed that certain crosscutting features of a product line have potencial to be reused in different domains, so they can be implemented using aspect oriented programming (AOP). In this work, a process is proposed for the development of SPLs and automatic generation of products, considering the crosscutting concerns present in each application domain. The crosscutting concerns are related to the common features that are scattered around program divisions or modules of different domains. The process proposed here has the goal of enhancing the reuse of SPL features using AOP, allowing the design of SPL in a more cohesive way and, thus, easing its maintenance and evolution. Aiming at decreasing the effort needed to instantiate products from these SPL, this work also presents an extension to the Captor application generator, named Captor-AO. This generator supports the proposed process, allowing the creation of products composed by features of different domains. Finally, a case study is presented in which Captor-AO is configured with two domains: a crosscutting domain for the persistence concern and a base domain compatible with this crosscutting domain, such that the generation of products can be done by composing features of both domains

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TAKAHASHI, SERGIO Y. "Estudo comparativo da relacao custo beneficio dos metodos de producao de sup(99)Mo: Fissao de sup(235)U e reacao de captura neutronica no sup(98)Mo." reponame:Repositório Institucional do IPEN, 2004. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11230.

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MAIDANA, NORA L. "Medidas de seccoes de choque para reacoes de captura de neutrons no sup(57)Co, sup(137)Cs e sup(241)Am considerando a formacao de estados isomericos." reponame:Repositório Institucional do IPEN, 2000. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10798.

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Raupp, Ivan Decker. "Redes de cooperação: um estudo sobre a criação e captura de valor por produtores de hortaliças no Oeste do Paraná." Universidade Estadual do Oeste do Parana, 2012. http://tede.unioeste.br:8080/tede/handle/tede/2294.

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Made available in DSpace on 2017-07-10T18:33:55Z (GMT). No. of bitstreams: 1 Ivan Decker Raupp.pdf: 2198527 bytes, checksum: e59bf59bb1a7bf236791775e606d2cfb (MD5) Previous issue date: 2012-03-30 Fundação Araucária The participation in horizontal cooperation networks is suggested by several authors as an important strategy so that low economic status farmers under family management can keep or improve the profitability of their entrepreneurships. In this context, the issue that guides this study is to answer whether the horizontal cooperation networks which are set up among the family producers of vegetables really allow them to aggregate value to production and whether the values occasionally aggregated are captured by them as well. In order to answer it, a theoretical matrix was used, where it is discussed the importance of the collective action and the cooperation networks as a governance structure which encourage the family agriculture and, thus, the rural development. In the empirical approach, a study of multi-case of two organizations was carried out, a cooperative and an association of producers that gathers vegetable producers. As a result, it is noticed that the strategies developed by means of both organizations allowed the farmers to have the aggregation and the value capture. The participation in the cooperative provided to the producers gains resulting from the transference of technology and scale extension in vegetable production. In regard to the association, the value aggregation mainly resulted from the access to more profitable distribution channels and from processes of product differentiation. In both cases, it is also evidenced the value capture translated by the extension of the farmers average income and other indicators described in this study as well. However, it was possible to identify that, in spite of the gains provided to the farmers, the studied organizations face problems of economic competitiveness and viability of the same ones which were pointed out in this study. On the basis of such information, at the end of this essay, some suggestions were formulated in order to contribute with the improvement of the farmers income and the sustainability of the studied organizations. A participação em redes de cooperação horizontal é sugerida por diversos autores como uma importante estratégia para que produtores rurais de pequeno porte econômico sob gestão familiar possam manter ou melhorar a rentabilidade de seus empreendimentos. Neste contexto, a questão que norteia esse estudo é responder se as redes de cooperação horizontal estabelecidas entre produtores familiares de hortaliças realmente lhes permitem agregar valor à produção e também se os valores eventualmente agregados são capturados pelos mesmos. Para respondê-la utilizou-se uma matriz teórica que discute a relevância da ação coletiva e das redes de cooperação como estrutura de governança que estimula a agricultura familiar e, assim, o desenvolvimento rural. Na aproximação empírica efetuou-se um estudo de multicaso de duas organizações, uma cooperativa e uma associação de produtores que congregam produtores de hortaliças. Como resultado, observa-se que as estratégias desenvolvidas por intermédio de ambas as organizações permitiram aos agricultores a agregação e captura de valor. A participação na cooperativa proporcionou aos produtores ganhos decorrentes da transferência de tecnologia e ampliação de escala na produção de hortaliças. No caso da associação, a agregação de valor derivou principalmente do acesso a canais de distribuição mais rentáveis e de processos de diferenciação dos produtos. Nos dois casos evidencia-se também a captura de valor traduzida pela ampliação da renda média dos agricultores e também por outros indicadores descritos neste trabalho. Entretanto foi possível identificar que, apesar dos ganhos proporcionados aos agricultores, as organizações estudadas deparam-se com problemas de competitividade e viabilidade econômica. Com base em tais informações, no final desta dissertação, formularam-se algumas sugestões no sentido de contribuir com a melhoria da renda dos produtores e também com a sustentabilidade das organizações estudadas.

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Mekki, Kaïs. "Gestion de l'information embarquée dans des matériaux communicants à l'aide de protocoles de réseaux de capteurs sans fil." Thesis, Université de Lorraine, 2016. http://www.theses.fr/2016LORR0034/document.

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La thèse aborde le problème de la dissémination des informations liées au produit tout au long de son cycle de vie, par l’exploitation du concept de matière communicante. L’objectif général est de stocker dans la matière communicante ses caractéristiques initiales mais aussi l’évolution de ses propriétés durant son usage, en évitant de les perdre lors par exemple d’une transformation ou d’une destruction d’une partie du matériau. Dans le cadre de cette thèse, ce principe est appliqué dans le domaine des préfabriqués en béton, où des nœuds de réseaux de capteurs sans fil sont intégrés dans le béton. Ces nœuds sont alors utilisés pour stocker des informations relatives au cycle de vie du préfabriqué et à sa surveillance sur la phase d’usage. Un nouveau protocole de communication, nommé USEE, a été proposé et permet de diffuser uniformément les informations dans la matière en considérant qu’elles n’ont pas toutes la même importance. Le protocole USEE évite notamment la saturation rapide des mémoires des nœuds de façon à pouvoir stocker un maximum d’informations différentes. Ensuite, un protocole de lecture, intitulé RaWPG, a été développé. Il est adapté à la récupération d’informations uniformément réparties et consomme peu d’énergie. Ces deux protocoles ont été implémentés dans le simulateur réseau Castalia/OMNeT++ et ont permis de montrer leur intérêt par rapport au contexte applicatif mais aussi par rapport à d’autres protocoles similaires de la littérature A new Internet of Things area is coming with communicating materials, which are able to provide diverse functionalities to users all along the product lifecycle. As example, it can track its own evolution which leads to gather helpful information. This new paradigm is fulfilled via the integration of specific electronic components into the product material. In this thesis, ultra-small wireless sensor nodes are used for concrete precast field. Indeed, storage of lifecycle information and data dissemination in communicating materials are very important issues. Therefore, this thesis provides a new protocol (USEE) for storing data by a systematic dissemination through the integrated sensor nodes. It guarantees that information could be retrieved in each piece of the concrete by intelligently managing data replication among each neighborhood of the sensor network. The protocol considers in the same set uniformity storage in the whole network, the data importance level, and the resource constraints of sensor nodes. Then, another new data retrieval protocol (RaWPG) is developed to extract the stored information. Castalia/OMNeT++ simulator is used to evaluate the performances of the proposed protocols

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El, Zein Atallah. "Etudes en laboratoire des interactions d'oxydants atmosphériques (NO2, HONO, H2O2, HO2, OH) avec des aérosols minéraux." Thesis, Orléans, 2013. http://www.theses.fr/2013ORLE2023.

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La poussière minérale est l'aérosol le plus abondant injecté dans l'atmosphère. Les surfaces de poussière peuvent être le siège de phénomènes d‘adsorption et de transformation hétérogène de gaz traces et peuvent affecter la teneur en espèces clés atmosphériques. Dans ce contexte, l'objectif de ce travail était l'étude expérimentale de la réactivité de particules minérales avec des gaz traces atmosphériques. L'interaction de réactifs gazeux (NO2, HONO, H2O2, OH, HO2) avec des oxydes minéraux (TiO2, Al2O3, Fe2O3, Arizona Test Dust) a été étudiée à l'aide d'un photoréacteur mis en place dans le cadre de la thèse pour des études de processus hétérogènes photochimiques. Le photoréacteur consiste en un tube à écoulement (irradié par 6 lampes UV) à basse pression (quelques Torr), couplé à l‘analyse des espèces par un spectromètre de masse quadripolaire à ionisation par impact électronique. Les coefficients de capture (ou probabilité de perte d'une espèce gazeuse par collision avec la surface réactive) ainsi que les produits de réactions hétérogènes ont été déterminés en fonction de différents paramètres tels que la masse du film minéral, la concentration initiale du réactif gazeux, la température, l‘humidité relative, la concentration d'oxygène et l'intensité d'irradiation UV. Les mécanismes des processus hétérogènes étudiés et leurs implications atmosphériques ont été discutés. En particulier, les données obtenues indiquent que la contribution de l'aérosol à la perte totale de HONO dans la couche limite planétaire est négligeable. A l‘inverse, l'interaction de H2O2 et des radicaux HO2 avec des aérosols minéraux peut être un puits non négligeable d'espèces HOx (OH, HO2) dans la troposphère avec un effet sur le pouvoir oxydant de la troposphère Mineral dust is the most abundant aerosol injected into the atmosphere. The dust surfaces provide the seedbed for adsorption and heterogeneous transformation of trace gas molecules and can affect the content of key atmospheric species. In this context, the goal of the present work was the experimental investigation of the reactivity of mineral dust particles toward trace atmospheric gases. The interaction of gaseous reactants (NO2, HONO, H2O2, OH, HO2) with mineral oxides (TiO2, Al2O3, Fe2O3, Arizona Test Dust) was studied using a photoreactor developed during this work for studies of heterogeneous photochemical processes. The photoreactor comprises a low pressure (several Torr) flow reactor (irradiated with 6 UV lamps) combined with an electron impact ionization quadrupole mass spectrometer for analysis of gas phase species. The uptake coefficients (determined as the probability of gas species loss per collision with reactive surface) as well as the products of heterogeneous reactions were determined as a function of different parameters such as the mass of mineral film, initial concentration of the gaseous reactant, temperature, relative humidity, concentration of oxygen and UV irradiation intensity. The mechanisms of the heterogeneous processes studied and their atmospheric implications are discussed. In particular, the data obtained in the present work indicate that the contribution of the aerosol to the total loss of HONO in the planetary boundary layer is negligible. Instead, the interaction of H2O2 and of HO2 radicals with mineral aerosols may be an important sink for HOX (OH, HO2) species in the troposphere with an effect on the oxidative capacity of the troposphere

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Zouinkhi, Ahmed. "Contribution à la modélisation de produit actif communicant : spécification et évaluation d'un protocole de communication orienté sécurité des produits." Thesis, Nancy 1, 2011. http://www.theses.fr/2011NAN10010/document.

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La surveillance d'entrepôts de produits chimiques est une opération délicate dans le sens où elle passe par une connaissance de la nature de chaque produit stocké, sur leur localisation, sur leur possible interaction et sur les actions à mettre en oeuvre en cas d'alerte. Pour faciliter cette gestion de stockage, cette thèse propose d'utiliser le concept de l'ambiant où le produit possède son propre système d'information et de communication sans fil de façon à le rendre intelligent et autonome. Cette thèse propose et développe un modèle de comportement interne de produit actif permettant une approche distribuée de sécurité active. Celui-ci permet d'aboutir à un protocole de communication de niveau applicatif à embarquer dans les produits actifs. Ce protocole est évalué de façon formelle en utilisant les Réseaux de Petri colorés hiérarchiques. Finalement, ce protocole est implémenté dans le simulateur Castalia/Omnet++ pour l'analyser dans plusieurs scénarii et aussi pour l'éprouver lors du passage à l'échelle. Les résultats montrent l'intérêt et la faisabilité du concept de produit actif Monitoring of chemical product storage is a delicate operation in the sense that it requires knowledge of the nature of each stored product, their location, their interaction and possible actions to be implemented in case of emergency. To facilitate the storage management, this thesis proposes to use the concept of ambient where the product has its own information system and wireless communication so as to make it intelligent and autonomous. This thesis proposes and develops a model of internal behavior of active product that allows a distributed approach of active security. This can lead to a communication protocol of application level to embed the active products. This protocol is formally assessed using hierarchical colored Petri nets. Finally, this protocol is implemented in the simulator Castalia/Omnet++ to analyze it in several scenarios and also for the experience when going to scale. The results show the usefulness and feasibility of the concept of active product

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Hadad, Waseem Al. "Thermique des mini-canaux : comportement instationnaire et approche convolutive." Thesis, Université de Lorraine, 2016. http://www.theses.fr/2016LORR0121/document.

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Un modèle semi-analytique permettant de simuler le transfert thermique conjugué dans un mini/macro canal plan soumis à des sources de chaleur surfaciques localisées sur les faces externes et variantes en fonction du temps, a été présenté et vérifié. Plus le diamètre hydraulique du canal est petit, plus la caractérisation expérimentale interne (mesure des températures et des flux) en régime thermique permanent ou transitoire à l'aide des capteurs internes est délicate. Une méthode non-intrusive permettant d'estimer les conditions internes à partir des mesures de température par thermographie infrarouge sur les faces externes et d'un modèle semi-analytique, a été effectuée. Comme le coefficient de transfert convectif forcé classique perd son sens en régime instationnaire, une approche alternative basée sur une fonction de transfert, valable pour un système linaire et invariant dans le temps a été mise en œuvre. Cette fonction peut être calculée analytiquement (uniquement pour une géométrie simple) ou estimée expérimentalement (géométrie complexe). Grâce au caractère intrinsèque de cette fonction de transfert, deux capteurs virtuels ont été conçus : capteur virtuel de température et détecteur d'encrassement permettent respectivement d'estimer les températures internes et de détecter l'encrassement qui peut avoir lieu dans l'échangeur à partir des mesures de températures sur les faces externes A semi-analytical model allowing to simulate the transient conjugate heat transfer in mini/macro plane channel subject to a heat source(s) localized on the external face(s), was presented and verified. The developed model takes into account advection-diffusion in the fluid and conduction in the solid. As the hydraulic diameter of the channel becomes small, the internal experimental characterization (measurement of temperature and heat flux) using internal sensors become tricky because internal sensors located may compromise the structural integrity of the whole system. A non-intrusive method for estimating the internal conditions from infrared temperature measurements on the external faces using the semi-analytical model was performed. Since the classic convective heat transfer coefficient loses its meaning in transient state, an alternative approach based on a transfer function, valid for Linear Time-Invariant (LTI) systems, was highlighted. This function can be calculated analytically only for a simple geometry. For complex geometries it can be estimated experimentally. Thanks to intrinsic character of this function, two characterization methods were designed. The first to estimate the temperature at a point from a measurement at another point in the system (virtual temperature sensor). The second method concerns the detection of fouling layers that may appear in the heat exchanger from temperature measurements on the external faces

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Bernard, Julien. "Évaluation du profil biomécanique du coureur cycliste." Thesis, Poitiers, 2015. http://www.theses.fr/2015POIT2261/document.

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Les problématiques scientifiques étudiant la biomécanique du mouvement de pédalage en cyclisme ont fait et font toujours l'objet de nombreux travaux. Ces travaux touchent de divers domaines, technologique par exemple pour l'amélioration du matériel qui a considérablement évolué, physiologique pour l'amélioration des capacités physiques et des rendements énergétiques en fonction des styles de pédalage, et biomécanique pour l'expertise, en particulier, de l'efficacité de mouvement de pédalage. Le travail présenté s'inscrit dans ce dernier champ scientifique : la biomécanique du mouvement.Le travail réalisé a bénéficié d'un appel à projet de l'Agence Française de la Lutte contre le Dopage avec pour objectif : « [SIC] se réarmer vis-à-vis du dopage en adoptant des démarches qui se veulent originales et concrètes, notamment en se plaçant du point de vue de l'entourage scientifique de sportifs dopés » en se focalisant sur les thèmes « [SIC] Travail, puissance et rendement énergétique».Dans ce contexte, l'objectif général des travaux est l'évaluation du profil biomécanique du coureur cycliste par mesures en laboratoire. Pour cela, une plateforme expérimentale a été validée et nous a permis d'aborder deux questions centrales i) qu'est ce qui crée la force produite à la pédale ? ii) que peut-on attendre d'une évaluation énergétique mécanique du mouvement de pédalage? Ces deux points sont abordés à partir d'un protocole de tests de type incrémentiel tel que l'exige la Fédération Française de Cyclisme. Les résultats ont été obtenus sur une cohorte de coureurs Elite Numerous studies investigated and still investigate pedaling motion in cycling from a biomechanical point of view. These studies involve various fields, like technologic for improving the material which has considerably evolved, physiologic for physical capacities and energy efficiencies' improvement according to pedaling styles, and biomechanics for motion's expertise and pedaling efficiency in particularly. This work takes part in the last scientific field: the biomechanics of movement.This work received a call for proposals of the AFLD (Agence Française de la Lutte contre le Dopage) in order to: "[SIC] rearm regarding doping by adopting original and practical approaches, considering scientific environment of doped athletes" by focusing on the themes of "[SIC] Work, power and energy efficiency".In this context, the general objective of this work is the biomechanical evaluation of cyclist's profile in laboratory conditions. For this, an experimental platform has been validated and allowed us to follow two central issues i) How is created the force produced to the pedal? ii) What can be expected from a mechanical energy evaluation of pedaling motion? These two points are discussed through incremental protocol tests as required by the French Cycling Federation. The results were obtained on a cohort of Elite cyclists

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Abdelnour, Abanob. "Développement d'étiquettes RFID UHF pour la traçabilité et le contrôle de qualité des produits alimentaires, Application : production de fromage." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAT081/document.

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Dans le secteur de l'agroalimentaire, l'utilisation de la RFID permet d'améliorer la sécurité des produits alimentaires tout en assurant une meilleure traçabilité et un meilleur suivi des produits. Le travail de cette thèse était principalement réalisé dans le cadre d’un projet en coopération avec plusieurs partenaires académiques et industriels dans le secteur fromager où l’objectif principal du projet était de maitriser l’ensemble des étapes de fabrication par un parfait suivi de la traçabilité des produits et un pilotage précis de l’affinage. Le travail réalisé dans cette thèse s'inscrit dans ce contexte et a comme objectif le développement de tags RFID UHF adaptés aux contraintes des produits alimentaires en assurant une double fonction: une fonction de traçabilité à identification unitaire, et ensuite une fonction de détection du degré de maturation de l'aliment par mesure indirecte de ses propriétés électromagnétiques et physico-chimiques.La première étape du projet était la caractérisation des paramètres électromagnétiques des produits alimentaires durant l’affinage afin de réaliser une conception appropriée de l'antenne du tag. En radiofréquences, c'est principalement le substrat qui dicte les propriétés électromagnétiques des composants, notamment la taille des antennes et leur diagramme de rayonnement. La connaissance de ces propriétés est indispensable afin de répondre aux exigences industrielles et d'intégrer dans de bonnes conditions les systèmes dans l'environnement applicatif. En plus, une étude de corrélation est réalisée entre la variation des propriétés diélectriques et celle des propriétés chimiques durant la période d’affinage des produits. Cette étude aide à comprendre la différence entre les différents produits et permet de déterminer les paramètres principaux à suivre durant l’affinage pour la conception du tag capteur.La deuxième étape était la conception des tags identifiants pour la traçabilité des produits alimentaires durant la procédure de fabrication. L’objectif principal est de réaliser un tag identifiant avec une performance qui répond aux besoins des fabricants dans le secteur fromager concernant la taille, la mémoire et la distance de lecture du tag tout en respectant les normes de santé au niveau d’emballage du tag ainsi que le substrat utilisé. Plusieurs configurations de tag RFID UHF étaient réalisées et testées dans un environnement industriel où les résultats obtenus montrent l’efficacité d’utiliser un système de RFID pour automatiser la traçabilité des produits dans le secteur fromager.La troisième étape concerne la conception des tags capteurs pour suivre le degré d’affinage des produits pendant la période de maturation. Une première solution, basée sur l’exploitation de l’effet de variation des propriétés diélectriques sur la distance de lecture de tag, montre un manque de performance due aux faibles variations ainsi qu’aux difficultés de mesure dans un environnement réel. Une deuxième solution basée sur la mesure de taux de dégagement des gaz durant l’affinage montre la possibilité d’estimer le degré d’affinage. Par contre, la puissance d’activation de capteur et le coût élevé ne permettent pas d’adopter cette solution. Finalement, deux solutions alternatives étaient réalisées pour mesurer l’augmentation du taux d’échapement des gaz d’une manière indirecte. La première configuration de tag capteur est basée sur le suivi du changement de dimensions du produit en utilisant un capteur résistif. D’autre part, la deuxième configuration de tag capteur est basée sur le suivi de changement de pression dans l’emballage du produit dû à la production de gaz. Les résultats obtenus montrent que ces deux configurations de tag RFID capteur peuvent offrir des solutions simples et efficaces pour le pilotage de l’affinage des produits alimentaires In the food sector, the use of RFID makes it possible to improve the safety of food while ensuring better traceability and better monitoring of products. The work of the thesis was mainly carried out within the framework of a project in cooperation with several academic and industrial partners in the cheese sector where the main objective of the project is to develop UHF RFID tags adapted to the constraints of food products by ensuring a dual function: a traceability function with unitary identification, and then a sensing function of cheese maturation by indirect measurement of its electromagnetic and physicochemical properties.The first step of the project was the characterization of the electromagnetic parameters of food products during ripening in order to achieve an appropriate design of the tag antenna. Knowledge of these properties is essential to meet industrial requirements and to integrate systems in right conditions. Also, a correlation study is carried out between the variation of the dielectric properties and that of the chemical properties during the period of cheese ripening. This study helps to understand the difference between cheese types and allows determining the main parameters to follow during cheese maturation for the design of the sensor tag.The second step was the design of identification tags for the traceability of food products during the manufacturing process. The primary objective is to create a UHF RFID tag with a performance that meets the needs of manufacturers in the cheese sector regarding the size, memory and reading distance while respecting the health standards at the packaging level as well as the substrate used. Several UHF RFID tag configurations were realized and tested in an industrial environment where the results obtained show the effectiveness of using an RFID system to automate the traceability of products in the cheese sector.The third step is the design of sensor tags to track the degree of maturation of products during the ripening period. A first solution, based on the exploitation of the effect of variation of the dielectric properties on the tag reading distance, shows a lack of performance due to the small variations as well as the difficulties of measurement in a real environment. A second solution based on the analysis of gas evolution rate shows the possibility of estimating the degree of cheese maturation. However, the sensor activation power and the high cost represent significant challenges and thus it was difficult to adopt this solution. Finally, two alternative solutions to measure the effect of gas evolution were presented. The idea is based on monitoring other parameters varying due to the increase of gas release during cheese maturation. The first sensor tag configuration traces the variation of product dimension due to maturation using a resistive sensor. On the other hand, the second sensor tag configuration measures the change of pressure inside the product packaging due to gas production. The results obtained show that these two sensor RFID tag configurations can offer simple and practical solutions for controlling the cheese ripening process

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Jalkebo, Charlotte. "Placement of Controls in Construction Equipment Using Operators´Sitting Postures : Process and Recommendations." Thesis, Linköpings universitet, Maskinkonstruktion, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-108980.

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An ergonomically designed work environment may decrease work related musculoskeletal disorders, lead to less sick leaves and increase production time for operators and companies all around the world. Volvo Construction Equipment wants to deepen the knowledge and investigate more carefully how operators are actually sitting whilst operating the machines, how this affects placement of controls and furthermore optimize controls placements accordingly. The purpose is to enhance their product development process by suggesting guidelines for control placement with improved ergonomics based on operators’ sitting postures. The goal is to deliver a process which identifies and transfers sitting postures to RAMSIS and uses them for control placement recommendations in the cab and operator environments. Delimitations concerns: physical ergonomics, 80% usability of the resulted process on the machine types, and the level of detail for controls and their placements. Research, analysis, interviews, test driving of machines, video recordings of operators and the ergonomic software RAMSIS has served as base for analysis. The analysis led to (i) the conclusion that sitting postures affect optimal ergonomic placement of controls, though not ISO-standards, (ii) the conclusion that RAMSIS heavy truck postures does not seem to correspond to Volvo CE’s operators’ sitting postures and (iii) and to an advanced engineering project process suitable for all machine types and applicable in the product development process. The result can also be used for other machines than construction equipment. The resulted process consists of three independent sub-processes with step by step explanations and recommendations of; (i) what information that needs to be gathered, (ii) how to identify and transfer sitting postures into RAMSIS, (iii) how to use RAMSIS to create e design aid for recommended control placement. The thesis also contains additional enhancements to Volvo CE’s product development process with focus on ergonomics. A conclusion is that the use of motion capture could not be verified to work for Volvo Construction Equipment, though it was verified that if motion capture works, the process works. Another conclusion is that the suggested body landmarks not could be verified that they are all needed for this purpose except for those needed for control placement. Though they are based on previous sitting posture identification in vehicles and only those that also occur in RAMSIS are recommended, and therefore they can be used. This thesis also questions the most important parameters for interior vehicle design (hip- and eye locations) and suggests that shoulder locations are just as important. The thesis concluded five parameters for control categorization, and added seven categories in addition to those mentioned in the ISO-standards. Other contradictions and loopholes in the ISO-standards were identified, highlighted and discussed. Suggestions for improving the ergonomic analyses in RAMSIS can also be found in this report. More future research mentioned is more details on control placement as well as research regarding sitting postures are suggested. If the resulted process is delimited to concern upper body postures, other methods for posture identification may be used.

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Tröger, Ralph. "Supply Chain Event Management – Bedarf, Systemarchitektur und Nutzen aus Perspektive fokaler Unternehmen der Modeindustrie." Doctoral thesis, Universitätsbibliothek Leipzig, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-155014.

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Supply Chain Event Management (SCEM) bezeichnet eine Teildisziplin des Supply Chain Management und ist für Unternehmen ein Ansatzpunkt, durch frühzeitige Reaktion auf kritische Ausnahmeereignisse in der Wertschöpfungskette Logistikleistung und -kosten zu optimieren. Durch Rahmenbedingungen wie bspw. globale Logistikstrukturen, eine hohe Artikelvielfalt und volatile Geschäftsbeziehungen zählt die Modeindustrie zu den Branchen, die für kritische Störereignisse besonders anfällig ist. In diesem Sinne untersucht die vorliegende Dissertation nach einer Beleuchtung der wesentlichen Grundlagen zunächst, inwiefern es in der Modeindustrie tatsächlich einen Bedarf an SCEM-Systemen gibt. Anknüpfend daran zeigt sie nach einer Darstellung bisheriger SCEM-Architekturkonzepte Gestaltungsmöglichkeiten für eine Systemarchitektur auf, die auf den Designprinzipien der Serviceorientierung beruht. In diesem Rahmen erfolgt u. a. auch die Identifikation SCEM-relevanter Business Services. Die Vorzüge einer serviceorientierten Gestaltung werden detailliert anhand der EPCIS (EPC Information Services)-Spezifikation illustriert. Abgerundet wird die Arbeit durch eine Betrachtung der Nutzenpotenziale von SCEM-Systemen. Nach einer Darstellung von Ansätzen, welche zur Nutzenbestimmung infrage kommen, wird der Nutzen anhand eines Praxisbeispiels aufgezeigt und fließt zusammen mit den Ergebnissen einer Literaturrecherche in eine Konsolidierung von SCEM-Nutzeffekten. Hierbei wird auch beleuchtet, welche zusätzlichen Vorteile sich für Unternehmen durch eine serviceorientierte Architekturgestaltung bieten. In der Schlussbetrachtung werden die wesentlichen Erkenntnisse der Arbeit zusammengefasst und in einem Ausblick sowohl beleuchtet, welche Relevanz die Ergebnisse der Arbeit für die Bewältigung künftiger Herausforderungen innehaben als auch welche Anknüpfungspunkte sich für anschließende Forschungsarbeiten ergeben.

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Macaulay, Fiona. "Presidents, producers and politics: law-and-order policy in Brazil from Cardoso to Dilma." 2017. http://hdl.handle.net/10454/13088.

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Yes This article analyses the governance tools available to three Brazilian presidents – Fernando Henrique Cardoso, Luiz Inácio Lula da Silva and Dilma Rousseff – to direct and enact policy in the area of law-and-order, that is, to prevent crime, improve policing and develop effective penal responses. It examines the commonalities and the differences in the ways that each approached their key roles as president: communicating with the public on the issues, using the agencies of the federal bureaucracy, managing intergovernmental relations with the subnational units (states and municipalities), and managing their multiparty coalition and relations with Congress. In particular, it highlights the way in which Brazil’s highly fragmented and porous party system, which underpins the country’s coalitional presidentialist form of governance, has also encouraged the entry into legislative arenas of direct representatives of criminal justice professionals (police) and indirect representatives of private security actors. This has resulted in increasing producer capture of law-and-order policy within both the federal bureaucracy and legislative arenas at all levels of government. In the crisis of the Dilma presidency, to which they contributed, they were able to move from being veto-players to agenda-setters on law-and-order policy, intent on reversing the direction set by these presidents.

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Gao, Han-Ci, and 高涵綺. "CO2 Capture Using Aqueous Ammonia Produced from Coal Chemical Plant." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/tayss5.

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Gonçalves, Ana Carolina Spínola. "Capture and conversion studies of carbon dioxide into chemical products." Master's thesis, 2020. http://hdl.handle.net/10316/93857.

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Dissertação de Mestrado Integrado em Engenharia do Ambiente apresentada à Faculdade de Ciências e Tecnologia A captura e armazenamento de carbono (CAC) e a captura e utilização de carbono (CCU) são consideradas internacionalmente como potencial medidas de mitigação para a redução de emissões atmosféricas de dióxido de carbono geradas em grandes fontes industriais. Este estudo incide sobre uma análise teórica das várias opções das tecnologias de CAC e CCU, e uma parte experimental sobre a carbonatação mineral utilizando um resíduo industrial alcalino, os grits, formados durante o processo Kraft na produção de pasta de papel. A parte experimental do estudo foi realizada no Centro de Investigação para os Processos Químicos e Produtos da Floresta (CIEPQPF) do Departamento de Engenharia Química da Universidade de Coimbra.Foi adotada a via de carbonatação mineral indireta composta por duas etapas: a etapa de extração de cálcio e a etapa de carbonatação originando um precipitado de carbonato de cálcio. Numa primeira abordagem foram analisados quatro possíveis solventes de extração (HNO3, CH3COOH, NaOH e o NH4Cl), de forma a determinar qual dos solventes teria um melhor desempenho na fase de extração de cálcio dos grits. De entre os quatro solventes apenas o HNO3 e o CH3COOH se destacaram com eficiências de remoção de 79,4 e 73,2 %, respetivamente, depois de 2 horas de operação a 30 oC. Testes cinéticos com os dois solventes demonstraram que inicialmente a cinética de dissolução do resíduo era muito rápida, estabilizando após 60 minutos. O HNO3 teve um melhor desempenho sobretudo nas eficiências registadas, contudo como é um ácido de natureza corrosiva e com custos associados elevados, optou-se pelo CH3COOH como solvente de extração de Ca dos grits. Um planeamento Box-Behnken com três fatores (temperatura, concentração da solução de CH3COOH e razão sólido/líquido, S/L(g/L)) com três níveis foi utilizado para determinar as condições ótimas da etapa de extração. A partir da análise estatística dos resultados, tendo como base o diagrama de Pareto, foi possível determinar quais os fatores que mais influenciam a extração de Ca. A concentração de ácido acético e a razão sólido-líquido foram os únicos fatores que demonstraram resultados com significância estatística, contribuindo positivamente e negativamente para a eficiência de extração de Ca, respetivamente. As análises baseadas na metodologia da superfície de resposta e função de “desirability” permitiram encontrar as condições ótimas: concentração de ácido de 2M, temperatura de 45ºC e razão sólido/líquido de 30g/L com uma eficiência de extração de cerca de 77 %.Na segunda etapa, foram realizadas experiências de carbonatação para a precipitação de carbonato de cálcio, fazendo reagir o licor rico em cálcio, obtido na etapa de extração sob condições ótimas, com uma corrente gasosa de CO2 num reator de pressão feito de inox. Essas experiências foram planeadas de acordo o projeto do tipo Box-Behnken com dois fatores (temperatura e pressão no interior do reator). A análise estatística dos resultados demonstrou que a única variável com significado estatístico era o efeito quadrático da temperatura, contribuindo negativamente para a eficiência de carbonatação. Deste modo, conclui-se que os intervalos de variação dos fatores selecionados não permitiram obter a variabilidade desejada para a eficiência de carbonatação. Contudo, foi possível obter condições ótimas de 30ºC e 30 bar, com eficiências de carbonatação na ordem dos 74 %, correspondendo uma capacidade de sequestro de CO2 de cerca de 460 kg CO2 /ton de grits. The carbon capture and storage (CCS) and carbon capture and utilization (CCU) have been considered internationally as potential measures to reduce the atmospheric emissions of carbon dioxide by large industrial sources.This study focuses on a theoretical analysis of the several options given by the CCS and CCU, and experimental work of mineral carbonation using an alkaline industrial waste, the grits, formed during the Kraft process in the production of paper pulp. The experimental tests were carried out at Chemical Process Engineering and Forest Products Research Centre (CIPQPF), Department of Chemical Engineering of University of Coimbra. The route of the indirect mineral carbonation was adopted, composed by two steps: first the extraction of calcium from the grits and second the precipitation of calcium carbonate. In a first approach, four possible extraction solvents were analyzed (HNO3, CH3COOH, NaOH and NH4Cl) to determine which solvent exhibited the best performance of the extraction of Ca from the grits. Among them, only HNO3 and CH3COOH have shown significant results with extraction efficiencies of 79.4 and 73.2%, respectively, after 2 h at 30 oC. Kinetic tests conducted with the two solvents demonstrated that initially the rate of the extraction process of Ca was very fast, stabilizing after 60 minutes. Since the nitric acid is a corrosive acid and with high associated costs, the acetic acid was selected for dissolution of grits and extraction of calcium. A Box-Behnken design with three factors (temperature, concentration of CH3COOH solution and solid/liquid ratio) having three levels was used to determine the optimal conditions of the extraction step. From the Pareto chart, it was possible to conclude that the acetic acid concentration and the solid-liquid ratio were the factors that demonstrated results with a significant statistical level, contributing positively and negatively to the efficiency of Ca extraction, respectively. The analysis based on the response surface methodology and the desirability functions allowed to found the following optimal conditions: acetic acid concentration of 2M, solid/liquid ratio of 30 g/L and temperature of 45ºC with an efficiency approximately of 77%. In the second step, carbonation experiments for the precipitation of CaCO3 were performed contacting the Ca-rich liquor, obtained from the extraction step operated under optimal conditions, with a flux of pure CO2 gaseous in a stainless inox reactor. These experiments were planned according to a Box-Behnken design with two factors (temperature and the pressure inside the reactor) at three levels. The statistical analysis of the results demonstrated that the only variable with a significant statistical level was the quadratic effect of the temperature, contributing negatively to the carbonation efficiency. Therefore, the ranges of the levels selected for the 2 factors do not produced a desired variability in the carbonation efficiencies. However, the response surfaces and desirability functions led to optimal conditions of 30 ºC and 30 bar, reaching a carbonation efficiency of 74%, corresponding a CO2 sequestration capacity of 460 kg CO2/ton of grits.

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KUO, CHUN-YU, and 郭郡羽. "Line Motion Illusion Produced by Luminance Gradient Bar: Attentional Capture of Luminance and Contrast." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/43104671336953143214.

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碩士 中原大學 心理學研究所 96 Line motion illusion refers to the phenomenon that when one end of a static line is precued before its presence, observes will perceive this static line as being drawn from the cued end to the uncued end. There are two attention-based accounts of this phenomenon. One is the attentional facilitation model (Hikosaka, Miyauchi, & Shimojo, 1993a) and the other is the end-point hypothesis (Eagleman & Sejowski, 2003). The attentional facilitation model proposed the motion-detecting mechanism involved in the process of motion perception. When the bar presented following a peripheral cue, the cued location of the bar would be perceived earlier than the remaining part by motion-detecting mechanism. Therefore, the attended location would be perceived as the beginning of the motion. The end-point hypothesis considered that the posteriori reconstruction mechanism might contribute to the processing of perceptual information. When an observer found himself attended at one end of a line, this would be interpreted as the end point of line motion. Von Grünau, Saikali and Faubert (1995) used luminance gradient bar to examine the attentional facilitation model. They found that the perceived motion direction began at the high luminance end. They interpreted that the high luminance end would capture attention automatically, resulting in this end being processed earlier than the remaining part of the bar by the motion-detecting mechanism. Therefore, a luminance gradient bar can produce an illusory line motion effect. However, there are two limitations in Von Grünau et al.'s study. First, they used the two-alternate forced choice task which might force participants to select one motion direction when they didn’t perceive any motion. Second, the attentional set of their participants might affect their performance (Downing & Treisman, 1997; Schmidt, 2000). To overcome these two limitations, a third choice of no motion was provided and the attentional set of the participants was manipulated in the present study. Additionally, this study further examined the attentional allocation produced by the luminance gradient bar directly. The results of Experiment 1 and 2 showed that gradient bars did induce line motion illusion, but the control bar didn’t. In addition, the results indicated that the whether there was an option of no motion has no effects on the perceived direction of motion of luminance gradient line. In Experiment 3, we examined the influence of the attentional setting of participants on the judgment of motion direction. And we found that the attentional setting did affect the perceived direction of motion. In addition, the results of Experiments 1 to 3 revealed that the attended location would be perceived as the end of the motion. Therefore, the end-point hypothesis would be supported but not the attentional facilitation model. In the final experiment, we combined the luminance gradient bar procedure with the dot discrimination task to reveal the attention allocation produced by luminance gradient bars. The results showed that the high contrast end of the line gradient bar could capture attention. This finding supported the conclusions of our previous experiments that the high contrast end could captured attention and be perceived as the end of the illusory line motion. These results suggest that the end point hypothesis could provide better explanation for line motion illusion. We proposed that both bottom-up and top-down processes would affect which location would be attended, and which might be perceived as the end of motion by the posteriori reconstruction mechanism (Eagleman & Sejowski, 2003).

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Boonsongsup, Lerssak. "SO�� capture and HCl release at Kraft recovery boiler conditions." Thesis, 1993. http://hdl.handle.net/1957/35778.

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Gallant, Stéphanie. "Caractérisation des solvants régénérables utilisés pour la capture du CO2 par chromatographie liquide couplée à la spectrométrie de masse." Thèse, 2018. http://hdl.handle.net/1866/21947.

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Yin, Yizhi. "Le codage distribué pour un réseau de capteurs sans-fil basé sur les turbo codes en bloc." Phd thesis, 2012. http://tel.archives-ouvertes.fr/tel-00777396.

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Cette thèse étudie les performances d'un réseau de capteurs sans-fil coopératif, basé sur un codage réseau algébrique linéaire appliqué au relais. On considère un schéma coopératif basé sur le code produit en bloc où un grand nombre de sources transmettent des données indépendantes codées par un premier code en bloc vers un seul destinataire avec l'aide du relais. Dans ce schéma, le relais applique le codage réseau algébrique linéaire en utilisant un code correcteur d'erreur systématique linéaire en bloc sur les mots de code source détectés par le relais. Seule, la redondance générée par le relais est transférée vers le destinataire. Le destinataire observe un mot de code produit en bloc en combinant les observations des sources et du relais. Premièrement, on aborde la coopération en mode time-division multiple-access (TDMA) et suppose un canal source-relais bruité. On analyse les probabilités théoriques à l'entrée et à la sortie du relais pour différente stratégies de détection au relais. On établit aussi une borne théorique sur la probabilité d'erreur de trame pour le schéma coopératif proposé. Puis on évalue la coopération multi-relais afin de traiter la corrélation des erreurs dans la redondance générée par le relais. Différents configurations de coopération (mono ou multi-relais avec différentes stratégies au relais) sont comparées. On montre que la liaison source-relais est le maillon faible du réseau. On évalue ensuite la capacité du réseau sous la condition de taille finie du code. Ensuite, on étudie la coopération basée sur la technique code-division multiple-access (CDMA) appliqué au relais de telle sorte que le signal du relais est avec ceux des sources dans la même bande de fréquence radio. Pour simplifier l'analyse, on suppose un canal source-relais sans erreur. On propose une procédure de décodage itératif avec la neutralisation de l'interférence. On formule deux cas de coopération basé sur CDMA: TDMA-CDMA avec répartition orthogonale dans le temps entre les sources et FDMA-CDMA avec allocation de sous-bandes de fréquence disjointes pour les sources. Le ratio d'allocation d'énergie entre les sources et le relais est évalué en utilisant les simulations.

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Wilson, Magnus. "Towards Effective and Efficient Business Model change : Opportunities and challenges for software-intensive product development companies." Licentiate thesis, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-17759.

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Digitalization initiates and drives significant changes to the process level, organization level, and business level of software-intensive product development (SIPD) companies and their customers. Digitalization creates new opportunities through digital transformation strategies of the business environment. Digitalization also significantly reduces the turnaround-time on a transaction, driving new challenges for the alignment of business and technology changes. For a successful business model realization, a company must understand what capabilities the organization has (in staff and products), what is required, and more importantly, how to turn these capabilities into good-enough abilities without disturbing the effectiveness and efficiency of the daily operations. Integrating the product and service development and the value delivery with a learning organization is critical for efficient business model change (BMCh). This thesis seeks to develop conceptual models for how BMCh is linked to value, learning organization design, and the transformation of capabilities into abilities derived from business model activities and actor interactions. Such conceptual models facilitate to investigate and identify critical mechanisms and capabilities needed to effectively and efficiently manage BMCh at full scale for SIPD companies, allowing them to exploit the on-going digitalization, may it be through (disruptive) business model innovation, technology innovation, or by continuously adapting and evolving the business operations. I use the SIPD company as the unit of analysis, with the dual-lens of value and knowledge, set in the context of a business model and how the value creation and capture are influenced by the interaction between two actors performing a business model activity. I build on the business model literature and infuse theories for knowledge creation, learning organizations, and contractual promises to create value. Conducting a cross-disciplinary literature review, followed by a synthesis of related literature, industry best-practices, and an associated design science study, my propositions were validated in a longitudinal case study exploring a service industrialization program in the telecommunication industry. I have produced five conceptual models and seven propositions as a start to be able to support the design of a governance mechanism, as the critical engine for both the learning organization and effective and efficient BMCh. The industry now explores the models found during the case study. My synthesis shows a need for further research into BMCh regarding early detection and measurements of gaps in value, gaps in knowledge, ambiguity, equivocality, and abilities. Flexible role-based governance views present the measurements, as part of the governance mechanisms for full-scale, effective, and efficient BMCh. Further, I also aim to implement such governance mechanisms in software, by using the associated research in intent-driven systems. In the meantime, I propose industry to build knowledge and experience related to the seven propositions.

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Hossian, Alejandro. "Modelo de proceso de conceptualización de requisitos." Tesis, 2012. http://hdl.handle.net/10915/23337.

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El proceso de captura de requisitos constituye un proceso con connotaciones sociales relacionadas con diferentes personas (stakeholders), una circunstancia que hace que se presenten ciertos problemas cuando se lleva adelante la conceptualización de requisitos. En esta tesis se propone un Proceso de Conceptualización de Requisitos que se estructura en dos fases: (a) Análisis Orientado a al Problema: cuyo objetivo es comprender el problema dado por el usuario en el dominio en el que este se lleva a cabo, y (b) Análisis de Orientado al Producto: cuyo objetivo es obtener las funcionalidades que el usuario espera del producto de software a desarrollar, teniendo en cuenta la relación de estas con la realidad expresada por el usuario en su discurso. Se proponen seis técnicas que articulan cada una de las tareas que componen las fases de proceso propuesto The requirements elicitation process, whose main objective is to give birth to the requirements, not only is a technical process to build a particular system but also an important process of social connotations involving different people (stakeholders), a circumstance which causes certain problems arise when carrying out the requirement conceptualization. In this PhD thesis is proposed a Process of Requirements Conceptualization that are structured in two phases: (a) Problem- Oriented Analysis: aimed at understanding the problem given by the user in the domain in which this takes place, and (b) Product-Oriented Analysis: its aim is to obtain the functionalities that the user intends to obtain from the software product to be developed, taking into account the relationship of these features with the reality expressed by the user in his speech. The techniques for each activity in both phases are introduced.

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Dissertations / Theses on the topic 'Producer capture'

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