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Design and testing of a novel human-powered generator device as a backup solution to power Cranfield´s Nano-Membrane ToiletPerez Lopez, Eloy 04 1900 (has links)
In today’s world there are 2.6 billion people that lack basic sanitation (37% of
world inhabitants). In August of 2012, Cranfield University was awarded by the
Bill & Melinda Gates Foundation with $810,000 to produce a prototype of the
Cranfield’s innovative Nano-membrane Toilet (NMT). Finally, the prototype is
going to be exhibited at the “Reinvent the Toilet Fair” during 21st and 22nd of
March 2014 in the Taj Palace Hotel, New Delhi (India).
Cranfield’s NMT demands electricity for its daily performance. Nevertheless, it is
targeted to off-grid communities. Consequently, a human-powered generator
(HPG) was selected as a backup solution. The current MSc by Research aimed
to design and test of a prototype of the aforesaid HPG. Moreover, to promote its
usage, a portable power supply unit is designed to store energy and power
small-loads like charging mobile phones and electric lighting.
To select the most suitable design for our case study, a methodology using the
Technique for Order of Preference by Similarity to the Ideal Solution has been
developed. As a result the plugged-in bike HPG alternative was selected. Next,
prototypes of this generator and the portable power supply unit were developed,
tested and shipped for display.
While testing of the plugged-in generator and portable power supply unit, 26
Watt-hours (Wh) were harvested over 15 minutes, with its corresponding
average charging power of 105 Watts. Nevertheless, the present study
concludes 96 Wh as a more accurate energy level to be harvested during one
hour of pedalling.
Considering 96 Wh of energy, a round-trip battery efficiency of 70% (lead-acid),
and a NMT’s demand of 283 Wh; a 10 people household needs to pedal the
HPG over 4 hours and 20 minutes. Nevertheless, if considering an 85% inverter
efficiency, 57.12 Wh are available to fully charge one mobile phone (5.6 Wh)
and provide 4.5 hours of room and desk lighting (11 Watts bulb).
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L'évaluation des performances des organisations implémentant les métodes Lean Manufacturing et Six Sigma : Application aux industries françaises / Evaluation of the performance of organizations that implemented Lean Manufacturing and Six Sigma methods : application to French industriesAlhuraish, Ibrahim 05 July 2016 (has links)
De nombreuses industries ont mené des recherches en vue de choisir la méthode appropriée afin d'améliorer les résultats, notamment Lean manufacturing et Six Sigma. Ce travail de thèse s’intéresse principalement à l’influence de l’implémentation de ces méthodes au sein des entreprises françaises, selon trois critères : financier, opérationnel et innovation. Les résultats de nos recherches montrent que les entreprises, appliquant Lean manufacturing et Six Sigma, sont plus efficacies pour l'amélioration des performances en matières financière et opérationnelle. Par ailleurs, les entreprises qui utilisent juste une partie des pratiques de Lean manufacturing et/ou de Six Sigma ont montré des améliorations limitées. En ce qui concerne le volet innovation, nous avons montré que l’implémentation de Lean manufacturing est suffisante pour avoir une amélioration des performances. En outre, nous avons constaté que les pratiques de Lean manufacturing et Six Sigma, telles que One Piece Flow, Kanban, 5S, etc. contribuent fortement à l’amélioration des performances. Les résultats statistiques montrent également que les facteurs clés, de la réussite de la mise en place de Lean et Six Sigma, peuvent être significativement différents selon la méthode. / Many industries conduct research in order to decide on the appropriate methodology for delivering optimal performance outcomes such as Lean Manufacturing or Six Sigma. Therefore, this research shows the influence of different categories based on the implementation method against three criteria: financial performance, operational performance and innovation performance. Research results indicate that companies implementing Lean Manufacturing and Six Sigma were more effective in improving company performance across financial and operational dynamics. Additionally, it shows companies who implemented Lean Manufacturing only saw improvements in innovation performance. Moreover, we found that Lean Manufacturing and Six Sigma practices such as One Piece Flow, Kanban, 5S, etc, supported increases in companies’ performance. The statistical results also show that the key factors for the success of Lean Manufacturing and Six Sigma implementation could differ depending on the method employed.
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[en] MODEL FOR ELICITING TACIT KNOWLEDGE IN CONTRACT MANAGEMENT OF OUTSOURCED SERVICES / [pt] MODELO DE ELICITAÇÃO DO CONHECIMENTO TÁCITO EM GESTÃO CONTRATUAL DE SERVIÇOS TERCEIRIZADOSERNESTO JOEL PENNO 22 November 2021 (has links)
[pt] O objetivo da dissertação é propor um modelo de elicitação do conhecimento
tácito em gestão contratual de serviços terceirizados (GCST), visando reutilizá-lo
em processos decisórios e na resolução de problemas desta área de gestão.
Busca-se demonstrar a aplicabilidade do modelo mediante o desenvolvimento de
um estudo empírico junto a uma das gerências de GCST de uma empresa do
setor de óleo e gás. A metodologia compreendeu: (i) revisão bibliográfica e
análise documental sobre os temas centrais da pesquisa; (ii) análise de conteúdo
dos modelos, métodos e técnicas para elicitação de conhecimento tácito nas
organizações em geral; (iii) desenvolvimento de um modelo conceitual para
elicitação de conhecimento tácito em GCST, empregando métodos multicritério
de apoio à decisão em duas de suas fases; e (iv) demonstração da aplicabilidade
do modelo conceitual, mediante a realização de um estudo empírico em uma das
gerências de GCST de uma grande empresa do setor de óleo e gás. O estudo
empírico demonstrou ser viável elaborar planos de elicitação de conhecimento
tácito em gestão contratual de diferentes tipos de serviços terceirizados (ST)
demandados por aquela gerência. Destaca-se como principal resultado desta
pesquisa um modelo inovador de elicitação de conhecimento tático em GCST,
que poderá ser aplicado por organizações que buscam a excelência em gestão
contratual de serviços terceirizados. Para a empresa do setor de óleo e gás na
qual foi desenvolvido o estudo empírico, a implementação de planos de
elicitação do conhecimento tácito cobrindo todos os tipos de serviços
terceirizados por ela demandados contribuirá para maior eficiência na gestão de contratos e fortalecimento de suas competências nessa área, com impactos na competitividade, criação/captura de valor e inovação no âmbito da empresa. / [en] The objective of the dissertation is to propose a model for eliciting tacit
knowledge in contract management of outsourced services (CMOS), aiming to
share and use it in decision-making processes and in solving problems in this
management area. It seeks to demonstrate the model s applicability by
developing an empirical study with one of the contract managers of a company
in the oil and gas sector. The methodology comprised: (i) bibliographical review
and documental analysis on the central themes of the research; (ii) content
analysis of models, methods and techniques for eliciting tacit knowledge in
organizations in general; (iii) development of a conceptual model for eliciting
tacit knowledge in CMOS, integrating multicriteria decision-making methods in
two phases of the model; and (iv) demonstration of the applicability of the
conceptual model, by carrying out an empirical study in one of the contract
management areas of a large company in the oil and gas sector. The empirical
study demonstrated that it is feasible to elaborate plans to elicit tacit knowledge
in contract management of different types of outsourced services (OSs). The
main result of this research is an innovative model for eliciting tactical
knowledge in CMOS, which can be applied by organizations seeking excellence
in contract management of outsourced services. For the oil and gas company in
which the empirical study was developed, the implementation of tacit knowledge
elicitation plans covering all types of required outsourced services will
contribute to enhance efficiency in contract management and strengthen its
competencies in CMOS, with impacts on its competitiveness, value
creation/capture, and innovation.
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User Experience Influenced Model for Comparing Application Development ToolsMileikowsky, Celine, Porling, Sebastian January 2020 (has links)
There are many possible tools to develop mobile applications with. Choosing a development tool is done by considering many different factors, and the choice is currently done, in many cases, arbitrarily. For this project, a decision model is designed to ease the process of choosing a development tool. A survey was conducted to examine how people using different smartphone platforms discover and download applications. 94 responses were collected, showing that approximately 50% of Android-users found mobile applications by using search engines or browsers. The corresponding number was approximately 30% for iOS-users. A usability test was conducted to discover the differences in user experience between Progressive Web Applications and native applications. 18 usability tests were conducted comparing the same product developed as a Progressive Web Application and a native application. A majority of the participants had a technical background. Both Android and iOS devices were included in the tests. The results indicated that end-users notice when an application is not natively developed. The effect on the user experience is combined with other technical differences and applied to the decision model. This model was designed to predict if a native application, a Progressive Web Application or a React Native application is the most favourable to develop for a specific scenario. The final model could, according to consultants at the stakeholder Slagkryssaren AB, with good accuracy predict when the different development tools should be used. The model could be used as a discussion tool in the first stages of the development process of an application. / Det finns många möjliga verktyg för att utveckla mobila applikationer. Valet av utvecklingsverktyg görs genom att överväga många olika faktorer, och görs idag i många fall högst godtyckligt. För det här projektet designades en beslutsmodell som förenklar processen av att välja ett utecklingsverktyg. En undersökning gjordes för att undersöka hur användare av olika smartphone- plattformar upptäcker och laddar ner applikationer. 94 svar samlades, svaren visade att ungefär 50% av Android-användare hittade mobila applikationer genom internetsökningar eller webbläsare. Denna siffran var ungefär 30% för iOS-användare. Ett användarbarhetstest utfördes för att finna skillnader i användarupplevelse mellan progressiva webbapplikationer och native-applikationer. En majoritet av deltagarna hade en teknisk bakgrund. Både Android- och iOS-enheter testades. Resultatet tydde på att slutanvändare la märke till när en applikation inte utvecklades som en native-applikation. Effekten på användarvänligheten, kombinerat med tekniska skillnader mellan verktygen, tillämpades på beslutsmodellen. Modellen designades för att förutse om en native-applikation, en progressiva webbapplikation eller en React Native- applikation är mest fördelaktig att utveckla i ett specifikt scenario. Den slutgiltiga modellen kunde, enligt konsulter på uppdragsgivaren Slagkryssaren AB, med god precision avgöra när de olika utvecklingsverktygen bör nyttjas. Modellens användning blev som ett diskussionsverktyg i de första stadierna av processen med att välja utvecklingsvektyg.
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[pt] MONITORAMENTO E AVALIAÇÃO DA REGULAMENTAÇÃO SOBRE ROTULAGEM DE ALIMENTOS ALERGÊNICOS NO BRASIL: PROPOSIÇÃO DE INDICADORES E MÉTRICAS / [en] MONITORING AND EVALUATION OF FOOD ALLERGENIC LABELING REGULATION IN BRAZIL: A PROPOSAL OF INDICATORS AND METRICSLUISA FERNANDA RIVERA CRIOLLO 05 October 2016 (has links)
[pt] O objetivo da dissertação é propor um conjunto de indicadores e métricas para o monitoramento e avaliação da regulamentação sobre rotulagem de alimentos alergênicos no Brasil, após sua implementação. No contexto institucional no qual a pesquisa se insere, considera-se que esse esforço propiciará ao órgão regulador, bem como aos diversos atores envolvidos na implementação da regulamentação em foco, o ferramental adequado para o monitoramento e a avaliação pretendida. A pesquisa pode ser considerada aplicada, descritiva e metodológica. Quanto aos meios de investigação, foi usado o método de construção de indicadores proposto pelo Ministério do Planejamento, Orçamento e Gestão, integrado a dois métodos de apoio à decisão: método analítico hierárquico (AHP) para definição dos pesos dos critérios classificatórios e a técnica TOPSIS para hierarquização dos indicadores propostos por categoria de requisitos da regulamentação, a partir dos graus atribuídos pelos especialistas. Destacam-se como resultados: a ferramenta de seleção e classificação de indicadores; e um conjunto consistente de indicadores de MA, visando à melhoria contínua do processo da regulamentação em foco e a comunicação do desempenho do órgão regulador neste campo da segurança de alimentos. / [en] The objective of this dissertation is to propose a set of indicators and respective metrics for monitoring and evaluating (ME) the food allergenic labeling regulation in Brazil, after its implementation. Within the institutional context in which the research is situated, it is assumed that this effort will provide the regulatory agency as well as the various actors involved in the implementation of the focused regulation, the proper tools for monitoring and evaluating its regulatory results. This research can be considered applied, methodological and descriptive. During the applied phase, a method proposed by the Ministry of Planning, Budget and Management was used for defining an initial list of indicators, and then two multi-criteria decision methods were employed: analytical hierarchical process (AHP) for the definition of weights for classification criteria; and the TOPSIS technique for final ranking of selected indicators by category of legal requirements. The main results are highlighted as follows: a tool for selection and classification of ME indicators; and a consistent set of indicators proposed for monitoring and evaluating the food allergenic labeling regulation from the perspective of continuous improvement of the whole process; and an effective communication of the regulatory body in the field of food safety.
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