36 resultados para AHP - Analytic Hierarchy Proces

em Instituto Politécnico do Porto, Portugal


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Nos dias que correm cada vez mais a diferena entre o sucesso e o fracasso de uma empresa depende da estratgia que escolhem seguir, sendo de igual forma importante maximizar quer os recursos materiais quer os recursos humanos. Assim sendo, cada vez mais empresas optam por incentivar os seus colaboradores a desempenhar um papel importante no processo de deciso. Para isso a estratgia da empresa tem de estar alinhada com cada actividade desempenhada pelos seus colaboradores. Esta dissertao tem por base uma pesquisa de vrios mtodos multicritrio existentes, tendo sido escolhido o mtodo Analytic Hierarchy Process (AHP) para determinar o melhor fornecedor de cimento para a empresa Materiais de Construo da Minhoteira, Lda. Foi ento necessrio desenvolver um software tendo por base o Excel que permitisse fazer a anlise das diversas alternativas perante os critrios mencionados. A aplicao informtica Make and Choice procura contribuir da melhor forma para uma escolha potencialmente mais acertada. Conclui-se que Make and Choice, utilizando o mtodo AHP, foi adequada para conseguir responder a todos os objectivos inicialmente propostos, foi ainda possvel verificar os benefcios que advm da sua aplicao. E desta forma, perceber que possvel ter o auxlio na tomada de deciso de ferramentas ou mtodos que permitem obter a melhor soluo.

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The painting activity is one of the most complex and important activities in automobile manufacturing. The inherent complexity of the painting activity and the frequent need for repainting usually turn the painting process into a bottleneck in automobile assembly plants, which is reflected in higher operating costs and longer overall cycle times. One possible approach for optimizing the performance of the paint shop is to improve the efficiency of the color planning. This can be accomplished by evaluating the relative merits of a set of vehicle painting plans. Since this problem has a multicriteria nature, we resort to the multicriteria decision analysis (MCDA) methodology to tackle it. A recent trend in the MCDA field is the development of hybrid approaches that are used to achieve operational synergies between different methods. Here we apply, for the first time, an integrated approach that combines the strengths of the analytic hierarchy process (AHP) and the Preference Ranking Organization METHod for Enrichment Evaluations (PROMETHEE), aided by Geometrical Analysis for Interactive Aid (GAIA), to the problem of assessing alternative vehicle painting plans. The management of the assembly plant found the results of value and is currently using them in order to schedule the painting activities such that an enhancement of the operational efficiency of the paint shop is obtained. This efficiency gain has allowed the management to bid for a new automobile model to be assembled at this specific plant.

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Value has been defined in different theoretical contexts as need, desire, interest, standard /criteria, beliefs, attitudes, and preferences. The creation of value is key to any business, and any business activity is about exchanging some tangible and/or intangible good or service and having its value accepted and rewarded by customers or clients, either inside the enterprise or collaborative network or outside. Perhaps surprising then is that firms often do not know how to define value, or how to measure it (Anderson and Narus, 1998 cited by [1]). Woodruff echoed that we need richer customer value theory for providing an important tool for locking onto the critical things that managers need to know. In addition, he emphasized, we need customer value theory that delves deeply into customers world of product use in their situations [2]. In this sense, we proposed and validated a novel Conceptual Model for Decomposing the Value for the Customer. To this end, we were aware that time has a direct impact on customer perceived value, and the suppliers and customers perceptions change from the pre-purchase to the post-purchase phases, causing some uncertainty and doubts.We wanted to break down value into all its components, as well as every built and used assets (both endogenous and/or exogenous perspectives). This component analysis was then transposed into a mathematical formulation using the Fuzzy Analytic Hierarchy Process (AHP), so that the uncertainty and vagueness of value perceptions could be embedded in this model that relates used and built assets in the tangible and intangible deliverable exchange among the involved parties, with their actual value perceptions.

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Atualmente e devido s conjunturas scio econmicas que as empresas atravessam, importante maximizar tanto os recursos materiais como humanos. Essa conscincia faz com que cada vez mais as empresas tentem que os seus colaboradores possam desempenhar um papel importante no processo de deciso. Cada vez mais a diferena entre o sucesso e o fracasso depende da estratgia que cada empresa opte por envergar. Sendo assim cada atividade desempenhada por um seu colaborador deve estar alinhada com os objetivos estratgicos da empresa. O contexto em que a presente tese se insere tem por base uma pesquisa aos vrios mtodos multicritrio existentes, de forma a que o servio que seja adjudicado possa ser executado de forma transparente e eficiente, sem nunca descorar a sua otimizao. O mtodo de apoio deciso escolhido foi o Analytic Hierarchy Process (AHP). A necessidade de devolver aos decisores/gestores a melhor soluo resultante da aplicao de um mtodo de apoio deciso numa empresa de servios energticos foi a base para a escolha da tese. Dos resultados obtidos conclui-se que a aplicao do mtodo AHP foi adequada, conseguindo responder a todos os objetivos inicialmente propostos. Foi tambm possvel verificar os benefcios que advm da sua aplicao, que por si s, ajudaram a perceber que necessrio haver uma maior entreajuda e consenso entre as decises a tomar.

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The problem of selecting suppliers/partners is a crucial and important part in the process of decision making for companies that intend to perform competitively in their area of activity. The selection of supplier/partner is a time and resource-consuming task that involves data collection and a careful analysis of the factors that can positively or negatively influence the choice. Nevertheless it is a critical process that affects significantly the operational performance of each company. In this work, there were identified five broad selection criteria: Quality, Financial, Synergies, Cost, and Production System. Within these criteria, it was also included five sub-criteria. After the identification criteria, a survey was elaborated and companies were contacted in order to understand which factors have more weight in their decisions to choose the partners. Interpreted the results and processed the data, it was adopted a model of linear weighting to reflect the importance of each factor. The model has a hierarchical structure and can be applied with the Analytic Hierarchy Process (AHP) method or Value Analysis. The goal of the paper it's to supply a selection reference model that can represent an orientation/pattern for a decision making on the suppliers/partners selection process

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Atualmente, as estratgias que as empresas optam por seguir para a maximizao de recursos materiais e humanos, podem representar a diferena entre o sucesso e o fracasso. A seleo de fornecedores um fator bastante crtico para o desempenho da empresa compradora, sendo por vezes necessria a resoluo de problemas que apresentam um elevado grau de complexidade. A escolha dos mtodos a ser utilizados e a eleio dos critrios mais relevantes foi feito com base no estudo de diversos autores e nas repostas obtidas a um inqurito online difundido por uma amostra de empresas portuguesas, criado especificamente para compreender quais os fatores que mais peso tinham nas decises de escolha de parceiros. Alm disso, os resultados adquiridos desta forma foram utilizados para conceder mais preciso s ponderaes efetuadas na ferramenta de seleo, na escolha dos melhores fornecedores introduzidos pelos utilizadores da mesma. Muitos estudos literrios propem o uso de mtodos para simplificar a tarefa de seleo de fornecedores. Esta dissertao aplica o estudo realizado nos mtodos de seleo, nomeadamente o Simple Multi-Attribute Rating Technique (SMART) e Analytic Hierarchy Process (AHP), necessrios para o desenvolvimento de uma ferramenta de software online que permitia, a qualquer empresa nacional, obter uma classificao para os seus fornecedores perante um conjunto de critrios e subcritrios.

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This paper starts with the analysis of the unusual inherence mechanism, from two aspects: accumulating and human error. We put forward twelve factors affected the decision of the emergency treatment plan in practice and summarized the evaluation index system combining with literature data. Then we screened out eighteen representative indicators by used the FDM expert questionnaire in the first phase. Hereafter, we calculated the weight of evaluation index and sorted them by the FAHP expert questionnaire, and came up with the frame of the evaluation rule by combined with the experience. In the end, the evaluation principles are concluded.

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O processo de negociao tem ganho relevncia como uma das formas de gesto de conflitos. Verifica-se que nas organizaes a negociao um processo omnipresente, que tem sido alvo de muito estudo e investigao, e as capacidades de negociao so consideradas determinantes para o sucesso. Em consequncia dessas tendncias, surgem propostas de modelos de negociao bastantes flexveis e que visam colaborao entre as partes interessadas, modelos que se adequam aos contextos organizacionais em que predominam relaes estveis e de longo prazo. Estas propostas procuram a soluo ptima para as partes interessadas. No entanto, faltam frequentemente os mecanismos e procedimentos que garantam um processo estruturado para elaborar e analisar os diversos cenrios na negociao, considerando um conjunto de aspectos relevantes para ambas as partes. No presente trabalho de dissertao formula-se uma proposta baseada no modelo de negociao Win Win Quantitativa, em que foi utilizada uma abordagem do mtodo multicritrio Analitic Hierarchy Process (AHP) para seleccionar a melhor opo de servio para uma determinada empresa. Para o caso de estudo, num contexto real, foi necessrio desenvolver uma aplicao Excel que permitisse analisar, de uma forma clara, as diversas alternativas perante os critrios mencionados. A aplicao do mtodo AHP permite aos clientes tomar uma deciso potencialmente mais acertada. A aplicao informtica procura optimizar os custos inerentes prestao de servios, oferecendo aos clientes um custo reduzido e assim tornando a empresa mais competitiva e atractiva para os potenciais clientes.

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Eastwards / Westwards: Which Direction for Gender Studies in the XXIst Century? is a collection of essays which focus on themes and methods that characterize current research into gender in Asian countries in general. In this collection, ideas derived from Gender Studies elsewhere in the world have been subjected to scrutiny for their utility in helping to describe and understand regional phenomena. But the concepts of Local and Global with their discoursive productions have not functioned as a binary opposition: localism and globalism are mutually constitutive and researchers have interrogated those spaces of interaction between the self and the other, bearing in mind their own embeddedness in social and cultural structures and their own historical memory. Contributors to this collection provided a critical transnational perspective on some of the complex effects of the dynamics of cultural globalization, by exploring the relation between gender and development, language, historiography, education and culture. We have also given attention to the ideological and rhetorical processes through which gender identity is constructed, by comparing textual grids and patterns of expectation. Likewise, we have discussed the role of ethnography, anthropology, historiography, sociology, fiction, popular culture and colonial and post-colonial sources in (re)inventing old/new male/female identities, their conversion into concepts and circulation through time and space. This multicultural and trans-disciplinary selection of essays is totally written in English, fully edited and revised, therefore, it has a good potential for an immediate international circulation. This project may trace new paths and issues for discussion on what concerns the life, practices and narratives by and about women in Asia, as well as elsewhere in the present day global experience. Academic readership: Researchers, scholars, educators, graduate and post-graduate students, doctoral students and general non-fiction readers, with a special interest in Gender Studies, Asia, Colonial and Post-Colonial Literature, Anthropology, Cultural Studies, History, Historiography, Politics, Race, Feminism, Language, Linguistics, Power, Political and Feminist Agendas, Popular Culture, Education, Womens Writing, Religion, Multiculturalism, Globalisation, Migration. Chapter summary: 1. Social Gender Stereotypes and their Implication in Hindi, Anjali Pande, Jawaharlal Nehru University, New Delhi, India. This essay looks at the subtle ways in which gender identities are constructed and reinforced in India through social norms of language use. Language itself becomes a medium for perpetuating gender stereotypes, forcing its speakers to confirm to socially defined gender roles. Using examples from a classroom discussion about a film, this essay will highlight the underlying rigid male-female stereotypes in Indian society with their more obvious expressions in language. For the urban woman in India globalisation meant increased economic equality and exposure to changed lifestyles. On an individual level it also meant redefining gender relations and changing the hierarchy in man-woman relationships. With the economic independence there is a heightened sense of liberation in all spheres of social life, a confidence to fuzz the rigid boundaries of gender roles. With the new films and media celebrating this liberated woman, who is ready to assert her sexual needs, who is ready to explode those long held notions of morality, one would expect that the changes are not just superficial. But as it soon became obvious in the course of a classroom discussion about relationships and stereotypes related to age, the surface changes can not become part of the common vocabulary, for the obvious reason that there is still a vast gap between the screen image of this new woman and the ground reality. Social considerations define the limits of this assertiveness of women, whereas men are happy to be liberal within the larger frame of social sanctions. The educated urban woman in India speaks in favour of change and the educated urban male supports her, but one just needs to scratch the surface to see the time tested formulae of gender roles firmly in place. The way the urban woman happily balances this emerging promise of independence with her gendered social identity, makes it necessary to rethink some aspects of looking at gender in a gradually changing, traditional society like India. 2. The Linguistic Dimension of Gender Equality, Alissa Tolstokorova, Kiev Centre for Gender Information and Education, Ukraine. The subject-matter of this essay is gender justice in language which, as I argue, may be achieved through the development of a gender-related approach to linguistic human rights. The last decades of the 20th century, globally marked by a gender shift in attitudes to language policy, gave impetus to the social movement for promoting linguistic gender equality. It was initiated in Western Europe and nowadays is moving eastwards, as ideas of gender democracy progress into developing countries. But, while in western societies gender discrimination through language, or linguistic sexism, was an issue of concern for over three decades, in developing countries efforts to promote gender justice in language are only in their infancy. My argument is that to promote gender justice in language internationally it is necessary to acknowledge the rights of women and men to equal representation of their gender in language and speech and, therefore, raise a question of linguistic rights of the sexes. My understanding is that the adoption of the Universal Declaration of Linguistic Rights in 1996 provided this opportunity to address the problem of gender justice in language as a human rights issue, specifically as a gender dimension of linguistic human rights. 3. The Rebirth of an Old Language: Issues of Gender Equality in Kazakhstan, Maria Helena Guimares, Polytechnic Institute of Porto, Portugal. The existing language situation in Kazakhstan, while peaceful, is not without some tension. We propose to analyze here some questions we consider relevant in the frame of cultural globalization and gender equality, such as: free from Russian imperialism, could Kazakhstan become an easy prey of Turkeys imperialist dream? Could these traditionally Muslim people be soon facing the end of religious tolerance and gender equality, becoming this new old language an easy instrument for the infiltration in the country of fundamentalism (it has already crossed the boarders of Uzbekistan), leading to a gradual deterioration of its rich multicultural relations? The present structure of the language is still very fragile: there are three main dialects and many academics defend the re-introduction of the Latin alphabet, thus enlarging the possibility of cultural contamination by making the transmission of fundamentalist ideas still easier through neighbour countries like Azerbaijan, Uzbekistan and Turkmenistan (their languages belong to the same sub-group of Common Turkic), where the Latin alphabet is already in use, and where the ground for such ideas shown itself very fruitful. 4. Construction of Womanhood in the Bengali Language of Bangladesh, Raasheed Mahmood; University of New South Wales, Sydney. The present essay attempts to explore the role of gender-based language differences and of certain markers that reveal the status accorded to women in Bangladesh. Discrimination against women, in its various forms, is endemic in communities and countries around the world, cutting across class, race, age, and religious and national boundaries. One cannot understand the problems of gender discrimination solely by referring to the relationship of power or authority between men and women. Rather one needs to consider the problem by relating it to the specific social formation in which the image of masculinity and femininity is constructed and reconstructed. Following such line of reasoning this essay will examine the nature of gender bias in the Bengali language of Bangladesh, holding the conviction that as a product of social reality language reflects the socio-cultural behaviour of the community who speaks it. This essay will also attempt to shed some light on the processes through which gender based language differences produce actual consequences for women, who become exposed to low self-esteem, depression and systematic exclusion from public discourse. 5. Marriage in China as an expression of a changing society, Elisabetta Rosado David, University of Porto, Portugal, and Universit CaFoscari, Venezia, Italy. In 29 April 2001, the new Marriage Law was promulgated in China. The first law on marriage was proclaimed in 1950 with the objective of freeing women from the feudal matrimonial system. With the second law, in 1981, values and conditions that had been distorted by the Cultural Revolution were recovered. Twenty years later, a new reform was started, intending to update marriage in the view of the social and cultural changes that occurred with Deng Xiaopings open policy. But the legal reform is only the starting point for this case-study. The rituals that are followed in the wedding ceremony are often hard to understand and very difficult to standardize, especially because China is a vast country, densely populated and characterized by several ethnic minorities. Two key words emerge from this issue: syncretism and continuity. On this basis, we can understand tradition in a better way, and analyse whether or not marriage, as every social manifestation, has evolved in harmony with Chinese culture. 6. The Other Woman in the Portuguese Colonial Empire: The Case of Portuguese India, Maria de Deus Manso, University of vora, Portugal. This essay researches the social, cultural and symbolic history of local women in the Portuguese Indian colonial enclaves. The normative Portuguese overseas history has not paid any attention to the indigenous female populations in colonial Portuguese territories, albeit the large social importance of these social segments largely used in matrimonial and even catholic missionary strategies. The first attempt to open fresh windows in the history of this new field was the publication of Charles Boxers referential study about Women in lberian Overseas Expansion, edited in Portugal only after the Revolution of 1975. After this research we can only quote some other fragmentary efforts. In fact, research about the social, cultural, religious, political and symbolic situation of women in the Portuguese colonial territories, from the XVI to the XX century, is still a minor historiographic field. In this essay we discuss this problem and we study colonial representations of women in the Portuguese Indian enclaves, mainly in the territory of Goa, using case studies methodologies. 7. Heading East this Time: Critical Readings on Gender in Southeast Asia, Clara Sarmento, Polytechnic Institute of Porto, Portugal. This essay intends to discuss some critical readings of fictional and theoretical texts on gender condition in Southeast Asian countries. Nowadays, many texts about women in Southeast Asia apply concepts of power in unusual areas. Traditional forms of gender hegemony have been replaced by other powerful, if somewhat more covert, forms. We will discuss some universal values concerning conventional female roles as well as the strategies used to recognize women in political fields traditionally characterized by male dominance. Female empowerment will mean different things at different times in history, as a result of culture, local geography and individual circumstances. Empowerment needs to be perceived as an individual attitude, but it also has to be facilitated at the macrolevel by society and the State. Gender is very much at the heart of all these dynamics, strongly related to specificities of historical, cultural, ethnic and class situatedness, requiring an interdisciplinary transnational approach.

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Objectivo: estudar a actividade muscular no complexo articular do ombro e tronco durante o servio e a sua relao com o Conflito Sub-Acromial. Metodologia: estudo observacional, analtico, transversal. Amostra de 15 atletas de voleibol distribudas em 3 grupos e avaliadas atravs de electromiografia de superfcie em msculos do ombro e do tronco. Foi avaliada a percentagem de activao muscular nas diferentes fases do servio. Resultados: aumento de actividade do Trapzio Superior e Infraespinhoso e diminuio do Recto Abdominal e Oblquo Externo no grupo com Conflito Sub-Acromial. Concluso: existem diferenas significativas nas atletas com e sem Conflito Sub-Acromial.

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Mestrado em Engenharia Qumica

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Introduo: O declnio do equilbrio, da fora dos membros inferiores e o medo de cair so fatores de risco de queda associados ao envelhecimento e a sua avaliao pode ser realizada pelo teste One Leg Standing (OLS), Sit to Stand (STS) e pela Falls Eficacy Scale (FES), respetivamente. As aplicaes para smartphone constituem uma alternativa para a avaliao dos fatores de risco de queda no envelhecimento. Objetivo: Analisar a capacidade de uma aplicao para smartphone na avaliao dos testes STS, OLS e FES. Metodologia: Realizou-se um estudo analtico numa amostra de 27 voluntrios com idade 60 anos. Realizaram-se os testes STS, OLS e a FES (verso iconogrfica, apresentada no smartphone). Os dados foram recolhidos simultaneamente por um smartphone e pelo Qualisys Motion Capture Systems associado a uma plataforma de foras. Foi utilizado o r de Pearson ou Spearman para analisar as possveis correlaes. Resultados: No STS obteve-se uma correlao muito forte (rp=0.97) no nmero de repeties de ciclos Sit Stand Sit (SLS) e forte na durao mdia do SLS (rp=0.85) e das subfases Sit to Stand (rp=0.69) e Stand to Sit (rp=0.778), com p<0.001. As medidas de inclinao do tronco apresentaram correlaes fortes, com exceo do ngulo inicial (p0.05). No OLS, verificou-se uma correlao moderada entre o deslocamento do centro de presso peak to peak mdio-lateral (rs=0.45; p=0.017) e antero-posterior (rs=0.39; p=0.046), root mean square mdio-lateral (rs=0.39; p=0.046) e antero-posterior (rs=0.46; p=0.017) e rea do estatocinesiograma (rs=0.45; p=0.018). Na FES obteve-se uma correlao moderada em trs categorias: tomar banho/duche (rs=0.49; p=0.010), deitar/levantar da cama (rs=0.43; p=0.024) e chegar aos armrios (rs=0.38; p=0.050). Concluso: A aplicao para smartphone parece avaliar corretamente os ciclos e a variao da inclinao do tronco no STS, porm parece necessitar de ser reajustada na FES e na velocidade do deslocamento do centro de presso, no OLS.

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A avaliao do desempenho consiste num instrumento estratgico de extrema importncia para a gesto de recursos humanos numa organizao, tal como no Exrcito. Permite criar indicadores ao nvel do desempenho dos avaliados ao mesmo tempo que contribui para o diagnstico e sua melhoria contnua. Ao nvel dos rgos decisores proporciona uma anlise das capacidades dos recursos humanos e a sua correta gesto. Foi neste contexto que este trabalho de investigao foi desenvolvido, tendo sido traado como objetivo, estudar a perceo dos militares avaliadores do Exrcito Portugus (EP) quanto aos sistemas de avaliao de desempenho (SAD) em vigor no Exrcito (SAMME1 e SIADAP2). Usou-se uma metodologia quantitativa e qualitativa e para o efeito foi desenvolvido um questionrio, que foi passado aos Coronis, Tenentes-coronis, Majores e Capites, todos eles avaliadores. Esta escolha fundamenta-se pela posio que os mesmos ocupam na cadeia hierrquica, pela experincia e o nvel de conhecimentos que possuem sobre os sistemas de avaliao, podendo contribuir com as suas opinies e sugestes, para a melhoria dos sistemas de avaliao atualmente em vigor no EP. Participaram no presente estudo 259 Oficiais avaliadores que responderam a um questionrio online lanado na internet. Os principais resultados obtidos permitem concluir que o SAMME assume maior relevncia e menor subjetividade que o SIADAP. Foi ainda observada a necessidade de implementar algumas medidas corretivas nos dois sistemas de avaliao em estudo, tais como: implementar no SAMME a autoavaliao e criar objetivos; no SIADAP, acabar com as quotas de 5% para a atribuio da classificao de desempenho excelente aos avaliados; Observou-se ainda que o avaliador tem uma importncia

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Purpose: The aim of this paper is to highlight the importance of qualitative research within the scope of management scientific studies, referring to its philosophy, nature and instruments. It also confronts it with quantitative methodology, approaching its differences as well as its complementariness and synergies, with the purpose of explaining, from a more analytic point of view, the relevance of qualitative methodology in the course of an authentic and real research despite its complexity. Design/methodology/approach: Regardless of its broad application, one may attest the scarcity literature that focuses on qualitative research applied to the management scientific area, as opposed to the large amount that refers to quantitative research. Findings: The paper shows the influence that qualitative research has on management scientific research. Originality/value:. Qualitative research assumes an important role within qualitative research by allowing for the study and analysis of certain types of phenomena that occur inside organisations, and in respect of which quantitative studies cannot provide an answer.

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This paper aims to present a contrastive approach between three different ways of building concepts after proving the similar syntactic possibilities that coexist in terms. However, from the semantic point of view we can see that each language family has a different distribution in meaning. But the most important point we try to show is that the differences found in the psychological process when communicating concepts should guide the translator and the terminologist in the target text production and the terminology planning process. Differences between languages in the information transmission process are due to the different roles the different types of knowledge play. We distinguish here the analytic-descriptive knowledge and the analogical knowledge among others. We also state that none of them is the best when determining the correctness of a term, but there has to be adequacy criteria in the selection process. This concept building or term building success is important when looking at the linguistic map of the information society.