The purpose of this study was to determine if fitness levels of individuals affect cognitive function. This study seeks to show how response inhibition and accuracy are affected following a mentally fatiguing task. Response inhibition refers to the suppression of actions that are inappropriate and that interfere with goal driven behavior. Response inhibition in reference to the continuous performance task (CPT) is measured in false clicks. The tasks for the CPT were completed after either a controlled period of rest or moderate-intensity exercise. Subjects were either Georgia Tech Division I track athletes or students leading a sedentary lifestyle. All subjects participated in two test protocols. Athletic subjects completed the resting protocol first, while sedentary subjects completed the exercise protocol first. Subjects reported to the lab following an overnight fast. They completed an initial set of paper work and signed a consent form, filled out a 24 hour history form and completed a Profile of Moods States (POMS) and Visual Analog Scale (VAS) form. Subjects then took a 20-minute (CPT). The CPT is a neuropsychological test that measures an individual’s sustained and selective attention. The length of the test is 20 minutes in order to induce mental fatigue. The goal of the test is to click in a white box when the letter T is seen. Immediately after subjects filled out a secondary set of paperwork. Once paper work was complete subjects either rested or exercised for 35 minutes. If subject was classified as an athlete, trial 1 was rest, while trial 2 was exercise. If subject was classified as a sedentary student, trial 1 was exercise, and trial 2 was rest. After the subject completed either the cycling or resting portion they repeated the CPT for five minutes. It was hypothesized that that the effects of moderate exercise positively affect the subject’s performance on the CPT. I expect false clicks following the 5 minute CPT to be lower after exercising. I hypothesize that for both groups their accuracy should be higher after moderate cycling and that higher fitness level should decrease the level of mental fatigue experienced throughout the CPT.

Constructing a Bayesian Network requires the conditional probabilities table (CPT) to be acquired, one for each variable or node in the network. When data mining is not available, CPTs must be acquired from the domain experts. The complexity of the direct elicitation is exponential on the number of parents of a variable, making direct elicitation from human experts impractical for a large number of causes. Causal models such as Noisy-OR, Noisy-AND, Noisy-MIN, Noisy-MAX and Recursive Noisy-OR have been developed that allow CPTs acquisition to be achieved with linear complexity on the number of causes. Their representation power is measured by their ability to encode the causal interactions. Causal interactions can be categorized into two types: reinforcing and undermining. The Non-Impeding Noisy-AND or NIN-AND tree causal model, developed by Xiang and Jia, is capable of modeling both types of interaction while retaining the linear complexity. The main challenge in utilizing the NIN-AND tree model to generate a CPT is that it requires its tree topology to be elicited. A NIN-AND tree topology is an encoding of the causal interactions between the causes. In this work we present two methods, Structure Elimination (SE) and Pairwise Causal Interaction (PCI), that allow indirect elicitations of the NIN-AND tree topology using some additional probabilities elicited from experts. We conduct human-based experiment to investigate the e ectiveness of the two methods in terms of accuracy by comparing them to the Direct Numerical (DN) elicitation method. We recruit participants from second year Computer Science students at the University of Guelph. The process involves training a participant into domain expert using a known NIN-AND tree model then acquire another NIN-AND tree model by applying the SE and PCI methods. The CPTs produced by the acquired NIN-AND tree models are then compared to the one obtained by using the DN method. Comparable CPT accuracies are obtained among models generated by di erent methods, even though SE and PCI requires a much smaller number of parameters in comparison to DN.

No description available.

Made available in DSpace on 2014-06-11T19:32:10Z (GMT). No. of bitstreams: 0 Previous issue date: 2004-09Bitstream added on 2014-06-13T18:06:49Z : No. of bitstreams: 1 costa_lc_dr_ift.pdf: 1010600 bytes, checksum: bc05c2dfbdfafca45a21ea8884cb5c3f (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / Na presente tese, investiga-se uma versão estendida da eletrodinâmica quântica, onde se introduz um termo de acoplamento axial renormalizável não invariante, dando ênfase à quebra dinâmica das simetrias de Lorentz e CPT no setor de gauge e à ambigüidade no coeficiente do termo do tipo Chern-Simons, induzido através de correções radiativas e outros métodos não perturbativos. Aspectos da teoria efetiva de Euler-Kockel-Heisenberg a tempertura finita também são investigados à luz do formalismo conhecido como Thermo Field Dynamics. / In the present thesis it is investigated an extended version of quantum electrodynamic where a renormalized non-invariant axial coupling term introduced, emphasizing the dynamic violation of the Lorentz and CPT symmetries in the gauge sector of the theory as well as the ambiguity of the coeficient of the Chern-Simon-like term, induced through radiative corrections and other non-perturbative methods. Some aspects of the Euler-Kockel-Heisenber effective theory at finite temperature have also been addressed in the context of the Thermo Field Dynamics formalism.

Tese (doutorado)—Universidade de Brasília, Faculdade de Educação, Programa de Pós-Graduação em Educação, 2015. / Submitted by Fernanda Percia França (fernandafranca@bce.unb.br) on 2015-12-17T17:02:32Z No. of bitstreams: 1 2015_ShirleySilveiraAndrade.pdf: 4415073 bytes, checksum: 912e42fb4f53fb18b1eaad0d1ac54fe7 (MD5) / Approved for entry into archive by Raquel Viana(raquelviana@bce.unb.br) on 2015-12-17T17:15:17Z (GMT) No. of bitstreams: 1 2015_ShirleySilveiraAndrade.pdf: 4415073 bytes, checksum: 912e42fb4f53fb18b1eaad0d1ac54fe7 (MD5) / Made available in DSpace on 2015-12-17T17:15:17Z (GMT). No. of bitstreams: 1 2015_ShirleySilveiraAndrade.pdf: 4415073 bytes, checksum: 912e42fb4f53fb18b1eaad0d1ac54fe7 (MD5) / Esta pesquisa tem como problemática central estudar a relação das atividades que vêm sendo realizadas pelos agentes da Comissão Pastoral da Terra no combate ao Trabalho Escravo Contemporâneo e a formação da consciência do trabalhador rural escravizado no Tocantins. Essa Pastoral da Igreja Católica, criada em 1975, tem o objetivo de ser um instrumento de luta pela terra e pela efetivação de direitos dos trabalhadores e trabalhadoras do campo. O estudo em questão possibilitou compreender o caminho da formação das representações que esses trabalhadores têm de sua condição para entender o surgimento de novas culturas de enfrentamento às relações de dominação. Discutindo a hegemonia, a partir das ideias de Gramsci, foi aplicado o método do materialismo-histórico e dialético. Os procedimentos metodológicos utilizados foram: a pesquisa bibliográfica e documental, a observação participante e entrevistas semiestruturadas com trabalhadores escravizados, autoridades públicas e membros da Pastoral. Através desta pesquisa foi possível concluir que as ações desenvolvidas pelos agentes da Comissão Pastoral da Terra na Sociedade Civil e Política, associadas à execução de políticas públicas, muitas delas resultado de sua luta, elevam o nível de consciência dos trabalhadores rurais escravizados. Através da construção de uma rede de informações sobre o Trabalho Escravo Contemporâneo, da luta pela Reforma Agrária e de uma articulação com os órgãos públicos tem sido possível a criação de uma nova cultura sobre essa indignidade. Os trabalhadores e trabalhadoras têm reconhecido que já foram e são escravizados, e suas condições de trabalho uma injustiça. Este reconhecimento tem impulsionado ações de resistência, como reclamações aos empregadores, fugas, denúncias e a consciência de que a relação empregatícia não é um caminho para a liberdade. ______________________________________________________________________________________________ ABSTRACT / This research has as it's central problematic the study of the relationship between the activities against Contemporany Slave Work that are being promoted by the Pastoral Land Commission and the development of a critical conscience among rural workers in slavery condition in Tocantins, Brazil. This catholic church commission, established in 1975, aims to be a tool on the struggle for land and effecuation rural workers rights. The referred study helped to understand how the workers collective representations about their condition were built and how new cultures, opposing the tradicional land domination in Brazil, are beeing developed. Discussing this hegemonic relationship, based on Gramsci's ideas, was applied the historical-materialism and the dialectical method. The methodological procedures used were the bibliographical and documental research, the participant observation and semi-structured interviews with the slave workers, public authorities and members of the Commission. Through this research it was possible to conclude that the actions developed by the Pastoral Land Commission in Civil and Political Society are increasing the level of awareness among the enslaved rural workers. By building a network of information on Contemporary Slave Work, struggle for Agrarian Reform and coordinating public agencies, it has been possible to create a new remark on this indignity situation. Workers started to recognize that they have been enslaved and that their working conditions are unfair. This recognition stimulates resistance action, such as complaints against employees and scapes from the labor's camp. It also brings the awareness that the employment relationship is not a path to freedom.

Made available in DSpace on 2015-05-14T12:14:18Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 946207 bytes, checksum: ce60b72d0464b16c7813e072994bd043 (MD5) Previous issue date: 2010-03-12 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / In this thesis we study the Lorentz and CPT symmetries breaking in a 4D fourfermions model at zero and at finite temperature. At zero temperature we find that these symmetries can be violated, but at finite temperature we show that there is a critical temperature at which the Lorentz and CPT symmetries are restored. We show that it is possible obtain the Friedmann equation in five dimensions in the presence of terms that violate the Lorentz symmetries , and as solution of this equation we find that the evolution of the universe is not usual, oscillating between accelerated phases and desaccelerated phases. We analyse the extension of the quantum eletrodynamics in the limit of high temperatures. Our aim is study the modifications that the Lorentz violation can cause in the free energy of the quantum eletrodynamics and with this to use experimental data related the free energy to estimate a numeric value to the parameter of Lorentz violation. We study a proposal of modification of the gravitation, this proposal consist in adding the Chern-Simons term to the usual gravitation. The issue most notable in this theory of gravitation is the search for solutions that occur in the general relativity and that somehow persist in this new theory. We show that for a given choice of scalar field that is introduced together with the Chern-Simons term, it is possible to find important solutions of the general relativity in this new theory of gravitation, as the Schwarzschild solution, the G¨odel metric, among others. We study with emphasis the G¨odel solution, showing that it is possible the existence this solution in the modified theory when we interpret the scalar field as a external field and when we interpret this same field as a dynamic field, this last interpretation leads the important modifications in parameter of the theory. / Nesta tese estudamos a quebra espontânea das simetrias de Lorentz e CPT em um modelo de quatro férmions quadridimensional em temperatura zero e em temperatura finita. Em temperatura zero encontramos que essas simetrias podem ser violadas, já em temperatura finita mostramos que pode existir uma temperatura para a qual essas mesmas simetrias que foram quebradas em temperatura zero podem ser restauradas. Mostramos que é possível obter uma equação de Friedmann em cinco dimensões na presença de termos que violam as simetrias de Lorentz, e como solução dessa equação encontramos que a evolução do universo pode ter um comportamento não usual, oscilando entre fases aceleradas e desaceleradas. Analisamos a eletrodin amica quântica estendida no limite de altas temperaturas. Nosso objetivo é estudar as modificações que a violação de Lorentz pode causar na energia livre da eletrodinâmica quântica e com isso usar dados experimentais relacionados a energia livre para estimar um valor num´erico para o par ametro de quebra das simetrias de Lorentz. Estudamos uma proposta de modificação da gravitação, esta proposta consiste em adicionarmos o termo de Chern-Simons a gravitação usual. O assunto com maior destaque nesta nova teoria de gravitação é a busca por soluções que ocorrem na relatividade geral e que de algum modo persistem nesta teoria modificada. Mostramos que para uma determinada escolha do campo escalar que é introduzido junto ao termo de Chern-Simons na teoria, é possível termos importantes soluções da relatividade geral nesta nova teoria de gravitação, como a solução de Schwarzschild, a métrica de Gödel, entre outras. Estudamos com maior ênfase a solução de Gödel, mostrando que é possível termos essa solução na teoria modificada tanto no caso em que interpretamos o campo escalar como um campo externo, quanto no caso em que o interpretamos como um campo dinâmico, esta última interpretação nos conduz a modificações importantes em parâmetros da teoria.

Orientador: Fernando Pinhabel Marafão / Banca: Claudionor Francisco do Nascimento / Banca: Paulo José Amaral Serni / Resumo: Este trabalho apresenta um estudo de aplicação da Teoria de Potência Conservativa (CPT) na geração da referência para um filtro ativo de potência paralelo (FAP), a fim de promover a compensação de distúrbios de corrente em um sistema elétrico trifásico a três fios. Apresenta, também, um resumo de algumas das principais teorias de potência utilizadas na análise de sistemas elétricos com formas de onda não senoidais e desequilibradas, especialmente aquelas úteis para o controle de filtros ativos. Atenção especial foi dada para a teoria CPT que, além de ser uma proposta recente, permite selecionar o distúrbio a ser compensado pelo filtro ativo paralelo, bastando definir sua referência a partir das parcelas de corrente da CPT. Neste trabalho também foi proposta uma metodologia de projeto para filtros ativos paralelo, a qual é baseada na análise da carga através da CPT e em função da compensação seletiva de distúrbios. Dessa forma é possível estudar a viabilidade econômica de um dado filtro ativo paralelo escolhendo a parcela de corrente mais adequada a ser compensada, obviamente, dentro de uma determinada configuração de carga. Outro ponto destacado no trabalho foi a introdução de uma nova definição de fator de potência, proposta pela CPT e que, além de reativos, também considera os efeitos dos desequilíbrios e das distorções no sistema elétrico. Com base nesta nova definição, percebe-se a necessidade de uma revisão dos valores de referência definidos pelas normas atuais para o fator de potência. A validação dos estudos e do uso da CPT no controle do filtro ativo paralelo foi feita através de simulações computacionais no software PSIM / Abstract: This work presents an application study of the Conservative Power Theory (CPT) in the generation of control reference for a Parallel Active Power Filter (PAF), in order to compensate current disturbances in a Three-phase three-wite electrical power system. Some of the most important power teories find in literature have also been summarized, especially those related to active filter controlling techniques. Special attention was given for the CPT, since is a recent proposal and it allows the selection of the disturbance to be compensated through the definition of different control references using different CPT current parcels. An alternative methodology has also been proposed tot the design of the parallel active power filter, which is based on the analysis of the load by means of the CPT current decomposition and according to a previously defined selective compensating strategy. Therefore, it is possible to analyze the economic viability of the active power filter implementation if choosing the most important disturbance to be compensated, obvioulsly assuming a specific load configuration. Other important contribution was the discussion of a new power factor definition (proposed by the CPT), which considers not only the load reactive behavior, but also the effects of current unbalances and distortions on the efficiency of the power circuit. Based on this new definition, we observe the necessity of revising the normalized referential values in order to ensure a proper accountability or revenue metering methodology. Finally, the theoretical studies and the CPT application for controlling a parallel active filter were validated by means of computational simulations using PSIM software / Mestre

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-02-22T18:37:41Z No. of bitstreams: 1 EmanuelErivanSilvaDaCunha_DISSERT.pdf: 3171169 bytes, checksum: 22dfdf808d39c79005e38c047376f691 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-03-03T23:53:31Z (GMT) No. of bitstreams: 1 EmanuelErivanSilvaDaCunha_DISSERT.pdf: 3171169 bytes, checksum: 22dfdf808d39c79005e38c047376f691 (MD5) / Made available in DSpace on 2017-03-03T23:53:31Z (GMT). No. of bitstreams: 1 EmanuelErivanSilvaDaCunha_DISSERT.pdf: 3171169 bytes, checksum: 22dfdf808d39c79005e38c047376f691 (MD5) Previous issue date: 2016-05-30 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / O ensaio SPT ? a ferramenta mais utilizada no Brasil para a obten??o de par?metros geot?cnicos para elabora??o de projetos de funda??o. Em contrapartida o CPTu ainda ? pouco usual, fato explicado pelo pequeno n?mero de empresas que o executam e pelo custo elevado. Logo, ? justificada a busca por correla??es para estimativa de par?metros do ensaio CPTu atrav?s de dados do ensaio SPT. No entanto a grande maioria dos estudos realizados concentram-se no sul e sudeste do pa?s, refor?ando a necessidade da determina??o de correla??es em outras regi?es, considerando as caracter?sticas dos solos locais. O objetivo desse trabalho ? determinar correla??es entre a resist?ncia a penetra??o do ensaio SPT (????) com a resist?ncia de ponta (??) e a resist?ncia lateral (fs) do ensaio CPTu. Utilizando-se ajustes lineares e uma abordagem geoestat?stica simplificada, obtiveram-se correla??es entre 88 sondagens SPT e oito ensaios CPTu para profundidades m?ximas de 22 m, em um dep?sito de areia siltosa na Cidade de Natal, no nordeste do Brasil. Os valores de NSPT utilizados nas correla??es foram corrigidos para energia padr?o internacional de 60%. A sele??o dos dados utilizou crit?rios geoestat?sticos, atrav?s do alcance do variograma para demarca??o da zona de influ?ncia das sondagens, bem como aplica??o de m?todos como IDW e Krigagem ordin?ria. / The standard penetration test (SPT) is the most commonly used in situ test for obtaining the required geotechnical parameters for foundation analysis and design in Brazil. Since in most situations only SPT data is available, the search for new SPT-CPT correlations is necessary. However, most of the available SPT-CPT correlations in Brazil have been established for soils of southern regions of the country. New local correlations for other soil types are therefore necessary. This study aims at determining correlations between the SPT resistance number (NSPT), and the CPT tip resistance (qc) and sleeve friction resistance (fs) for a silty sand deposit at the city of Natal, at the Northeast coast of Brazil. Using linear fittings and a simplified geostatistic approach, correlations were obtained for 88 SPT boreholes and eight CPT boreholes. The NSPT blowcount values where corrected for the energy of 60%. SPT-CPT correlations were devised using the following approaches: variogram analysis, inverse distance weighting (IDW) and ordinary kriging.

Submitted by Helena Bejio (helena.bejio@unioeste.br) on 2017-12-04T17:51:33Z No. of bitstreams: 2 Hiolly_Souza_2017.pdf: 2268104 bytes, checksum: b0860ada30d3fd70f487a131675a9cee (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2017-12-04T17:51:33Z (GMT). No. of bitstreams: 2 Hiolly_Souza_2017.pdf: 2268104 bytes, checksum: b0860ada30d3fd70f487a131675a9cee (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2017-05-02 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / This dissertation studied the mediating work carried out by the Land Pastoral Commission (CPT) in agrarian conflicts in the western region of Paraná, resulting from the construction of the Itaipu Binational Hydroelectric Power Plant and its lake; the process of modernization of agriculture, etc. The chronological cut for the aforementioned study began in 1964, extending to 1987. Presenting the historical contextualization of Brazil and the region in the first chapter; discussing Liberation Theology and its influence on pastoral work within the "preferential option for the poor", as well as the relations between the Catholic Church and the Brazilian dictatorial government. The first chapter refers to the Brazilian politico-social contextualization in the 1960s and 1970s; of the occupation process of the western region, the mechanization of agriculture. We continue with the second chapter that seeks a discussion on the progressive wing of the Catholic Church and the influence it had on CPT's actions in western Paraná. The third chapter deals exclusively with the Commission's actions with rural workers, participating in its organization and its struggles. Analyzing the constitution of organizations such as the Justice and Land Movement (MTJ) and the Landless Farmers Movement of the West of Paraná (MASTRO), and other CPT work fronts as opposed to the colonization projects, immigration to the central regions -west and north, conflicts between settlers and indigenous people. / Esta dissertação se ocupou em estudar o trabalho mediador realizado pela Comissão Pastoral da Terra (CPT) nos conflitos agrários na região do oeste paranaense, resultantes da construção da Usina Hidrelétrica Binacional de Itaipu e de seu lago; do processo de modernização da agricultura, etc. O recorte cronológico para o referido estudo se inicia em 1964 se estendendo até o ano de 1987. Apresentando a contextualização histórica do Brasil e da região no primeiro capítulo; discutindo a Teologia da Libertação e sua influência no trabalho pastoral dentro da "opção preferencial pelos pobres", bem como as relações entre a Igreja Católica e o governo ditatorial brasileiro. O primeiro capítulo se refere a contextualização político-social brasileira nas décadas de 1960 e 1970; do processo de ocupação da região oeste, a mecanização da agricultura. Damos prosseguimento com o segundo capítulo que buscou fazer uma discussão sobre a ala progressista da Igreja Católica e a influência que teve nas ações da CPT no oeste paranaense. O terceiro capítulo versa exclusivamente sobre as ações da Comissão junto aos trabalhadores rurais, participando de sua organização e de suas lutas. Analisando a constituição de organizações como o Movimento Justiça e Terra (MTJ) e o Movimento dos Agricultores Sem Terra do Oeste do Paraná (MASTRO), e outras frentes de trabalho da CPT como a oposição aos projetos de colonização, a imigração para as regiões centro-oeste e norte, os conflitos entre colonos e indígenas.

The primary objective of the project was to survey audiologists in clinical practice setting to determine the amount of time taken to perform various audiologic tests using Current Procedural Terminology, (CPT) codes to define these tests and if these CPT codes were felt to be adequate. Audiologists were also asked to respond regarding possible impact and reimbursement changes in their clinical practices related to managed care. Responses of audiologists were analyzed to determine: a) adequacy of CPT codes; b)average time to perform various audiologic tests; c) impact managed care onclinical practice; and d) changes in reimbursement as a result of managed care. The survey was designed to determine the type of work setting, typical job duty, average monthly caseload and hours per day spent on patient care for each respondent. The survey with a cover letter explaining the purpose was mailed to 93 audiologists in clinical setting in the state of Florida. Five were returned undeliverable, and 39 of the remaining 88 were returned either completed or partially completed. The survey results revealed over 71% of the audiologists felt the current CPT codes were adequate. Time spent performing traditional audiologic tests, such as comprehensive audiometric evaluations and impedance testing, was fairly consistent. Greater time variability occurred in tests used to determine vestibular function. Over three-quarters of the respondents believed managed care has had a negative impact on their clinical practices, while 11% believe they have been positively impacted. Approximately 82% of the audiologists have had reductions in reimbursement as a result of managed care, while 10% have seen no change and 5% have enjoyed slightly greater reimbursement.