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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Método bivalorado para medições subjetivas / Two-value method for subjective measurements

Carlos Alberto Ferreira Bispo 26 January 2010 (has links)
Contexto: devido à crescente necessidade de melhor conhecer os elementos organizacionais, as medições subjetivas estão ganhando um espaço cada vez maior. Problema: podemos avaliar o quão confiável em relação à realidade do atributo de um mensurando é uma amostra de dados obtidos por meio de medição subjetiva bivalorada? Hipóteses: Hipótese 1 - já existe um método científico que consiga realizar eficazmente a avaliação citada no problema; Hipótese 2 - caso a primeira hipótese não seja satisfeita, é possível criar um método que possa realizar eficazmente aquela avaliação. Objetivo: após confirmada a inexistência de um método consagrado cientificamente que consiga realizar a avaliação citada no problema, então, desenvolver um método que realize eficazmente aquela avaliação. Métodos: elaboração do embasamento teórico sobre os fundamentos da medição subjetiva; revisão bibliográfica sobre os métodos existentes que trabalham com medição subjetiva bivalorada; elaboração e validação de um método que solucione o problema proposto. Escopo e limitações: as publicações utilizadas para elaborar a fundamentação teórica sobre medição subjetiva e o novo método são multidisciplinares, porém o enfoque dado aos estudos foi para a gestão organizacional, com ênfase nos assuntos pertinentes à Engenharia de Produção e áreas afins. Resultados obtidos: (1) foram elaborados os postulados sobre medição subjetiva; (2) foram delineadas as principais fontes de erros de medição subjetiva baseada naqueles postulados; (3) não foi encontrado na literatura pertinente qualquer método científico ou expressão matemática que solucione o problema proposto; (4) foi elaborado um método para trabalhar com medição subjetiva bivalorada. Análise dos resultados: (1) os postulados elaborados serviram de base para o levantamento das principais fontes de erros de medições subjetivas; (2) o embasamento teórico serviu como fundamentação para a elaboração do método preliminar que utilizava a medição subjetiva bivalorada; (3) novos estudos permitiram um aperfeiçoamento do método preliminar, elaborando o novo método; (4) um estudo de caso mostrou a aplicabilidade do novo método. Conclusões: os estudos realizados permitiram comprovar a eficácia do método para medições subjetivas bivaloradas. / Background: Due to the growing need to better understand the organizational elements, subjective measurements are gaining more and more space. Problem: can we assess how reliable a data sample collected via 2-value subjective measurement is in relation to the reality of the attribute of a measurand? Hypotheses: Hypothesis 1 - there is already a scientific method that can effectively perform the assessment mentioned in the problem; Hypothesis 2 - in the even the first hypothesis is not met, it is possible to create a method that can effectively perform that assessment. Purpose: After confirming the absence of a scientifically established method that can perform the evaluation mentioned in the problem, the purpose is to develop a method to effectively perform that evaluation. Methods: Development of theoretical basis on the grounds of subjective measurements; literature review on existing methods that work with 2-value subjective measurement; development and validation of a new method that solves the problem proposed. Scope and limitations: the publications used to develop the theoretical framework of subjective measurements and the new method are multidisciplinary, yet the focus given to the studies was more related to organizational management, with emphasis on matters pertaining to Production Engineering and related fields. Results: (1) postulates on subjective measurements have been elaborated; (2) the main sources of subjective measurement errors based on those postulates have been outlined; (3) no scientific method or mathematical expression that may address the problem proposed has been found on the literature; (4) a method was developed to work with two-value subjective measurements. Analysis of results: (1) the postulates developed served as a basis for raising the main sources of subjective measurement errors; (2) the theoretical framework served as the basis for establishing the primary method that used two-value subjective measurements; (3) new studies allowed for the improvement of the primary method by developing the new method; (4) a case study showed the applicability of the new method. Conclusions: The studies have allowed us to effectiveness of the method for 2-value subjective measurements.
12

A imortalidade da alma na filosofia crítica de Kant: um estudo a partir de seu confronto com o Fédon de Mendelssohn

Lauro, Monalisa Maria 18 August 2010 (has links)
Submitted by Renata Lopes (renatasil82@gmail.com) on 2016-09-29T13:41:58Z No. of bitstreams: 1 monalisamarialauro.pdf: 510424 bytes, checksum: 31284a9c9c1e1159695542b7f038ffe8 (MD5) / Approved for entry into archive by Diamantino Mayra (mayra.diamantino@ufjf.edu.br) on 2016-09-30T13:52:54Z (GMT) No. of bitstreams: 1 monalisamarialauro.pdf: 510424 bytes, checksum: 31284a9c9c1e1159695542b7f038ffe8 (MD5) / Made available in DSpace on 2016-09-30T13:52:54Z (GMT). No. of bitstreams: 1 monalisamarialauro.pdf: 510424 bytes, checksum: 31284a9c9c1e1159695542b7f038ffe8 (MD5) Previous issue date: 2010-08-18 / FAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais / Na presente dissertação, analisa-se o modo peculiar com que Kant apreende o problema da imortalidade da alma em sua filosofia crítica. Neste intuito, prioriza-se um confronto com as provas racional-teóricas presentes no célebre Fédon mendelssohniano, visto que este é uma notável referência na defesa da imortalidade da alma na Aufklärung. Este confronto permite constatar que o argumento da simplicidade da alma de Mendelssohn constitui-se em um paralogismo transcendental, e que sua defesa da incorruptibilidade da alma não se sustenta quando se respeita a condição crítica de uso esquematizado dos conceitos puros do entendimento. Finalmente, a advertência kantiana contra o uso especulativo da razão para além dos limites da experiência possível revela-se como parte de seu empreendimento de fundamentação de uma moralidade autônoma e plenamente ativa na vida humana. Na perspectiva aberta pela lei moral, a permanência da alma resolve-se como um necessário e sólido postulado da razão prática pura. / This thesis analyzes the particular way in which Kant conceives the issue of the soul’s immortality in his critical philosophy. In order to do that, the focus is set on a confrontation with the rational-theoretical proofs present in Mendelssohn’s Phaedon, since this work is a remarkable reference in the defense of the soul’s immortality during the German Aufklärung. This confrontation allows us to verify that Mendelssohn’s argument of the simplicity of the soul constitutes a transcendental paralogism, and his defense of the incorruptibility of the soul fails when measured by the critical condition of a schematized use of the pure concepts of the understanding. Finally, Kant’s caution against the speculative use of reason beyond the limits of possible experience appears as a part of his undertaking of philosophically grounding a morality which is both autonomous and completely active in human life. Following the perspective opened by the moral law, the duration of the soul is explained as a necessary and firm postulate of pure practical reason.
13

Control room agents : an information-theoretic approach

Van der Westhuizen, Petra Laura 28 February 2007 (has links)
In this thesis, a particular class of agent is singled out for examination. In order to provide a guiding metaphor, we speak of control room agents. Our focus is on rational decision- making by such agents, where the circumstances obtaining are such that rationality is bounded. Control room agents, whether human or non-human, need to reason and act in a changing environment with only limited information available to them. Determining the current state of the environment is a central concern for control room agents if they are to reason and act sensibly. A control room agent cannot plan its actions without having an internal representation (epistemic state) of its environment, and cannot make rational decisions unless this representation, to some level of accuracy, reflects the state of its environment. The focus of this thesis is on three aspects regarding the epistemic functioning of a control room agent: 1. How should the epistemic state of a control room agent be represented in order to facilitate logical analysis? 2. How should a control room agent change its epistemic state upon receiving new information? 3. How should a control room agent combine available information from different sources? In describing the class of control room agents as first-order intentional systems hav- ing both informational and motivational attitudes, an agent-oriented view is adopted. The central construct used in the information-theoretic approach, which is qualitative in nature, is the concept of a templated ordering. Representing the epistemic state of a control room agent by a (special form of) tem- plated ordering signals a departure from the many approaches in which only the beliefs of an agent are represented. Templated orderings allow for the representation of both knowledge and belief. A control room agent changes its epistemic state according to a proposed epistemic change algorithm, which allows the agent to select between two well-established forms of belief change operations, namely, belief revision and belief update. The combination of (possibly conflicting) information from different sources has re- ceived a lot of attention in recent years. Using templated orderings for the semantic representation of information, a new family of purely qualitative merging operations is developed. / School of Computing / Ph. D. (Computer Science)
14

Control room agents : an information-theoretic approach

Van der Westhuizen, Petra Laura 28 February 2007 (has links)
In this thesis, a particular class of agent is singled out for examination. In order to provide a guiding metaphor, we speak of control room agents. Our focus is on rational decision- making by such agents, where the circumstances obtaining are such that rationality is bounded. Control room agents, whether human or non-human, need to reason and act in a changing environment with only limited information available to them. Determining the current state of the environment is a central concern for control room agents if they are to reason and act sensibly. A control room agent cannot plan its actions without having an internal representation (epistemic state) of its environment, and cannot make rational decisions unless this representation, to some level of accuracy, reflects the state of its environment. The focus of this thesis is on three aspects regarding the epistemic functioning of a control room agent: 1. How should the epistemic state of a control room agent be represented in order to facilitate logical analysis? 2. How should a control room agent change its epistemic state upon receiving new information? 3. How should a control room agent combine available information from different sources? In describing the class of control room agents as first-order intentional systems hav- ing both informational and motivational attitudes, an agent-oriented view is adopted. The central construct used in the information-theoretic approach, which is qualitative in nature, is the concept of a templated ordering. Representing the epistemic state of a control room agent by a (special form of) tem- plated ordering signals a departure from the many approaches in which only the beliefs of an agent are represented. Templated orderings allow for the representation of both knowledge and belief. A control room agent changes its epistemic state according to a proposed epistemic change algorithm, which allows the agent to select between two well-established forms of belief change operations, namely, belief revision and belief update. The combination of (possibly conflicting) information from different sources has re- ceived a lot of attention in recent years. Using templated orderings for the semantic representation of information, a new family of purely qualitative merging operations is developed. / School of Computing / Ph. D. (Computer Science)

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