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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Ciência da Computação / Made available in DSpace on 2012-10-18T10:32:19Z (GMT). No. of bitstreams: 0Bitstream added on 2014-09-25T20:53:58Z : No. of bitstreams: 1 181350.pdf: 4168422 bytes, checksum: 2d241c00d2a71342000a9e91be0b2eb0 (MD5) / Os servidores de armazenamento multimídia surgiram da necessidade de manipulação das informações multimídia. Diante das características deste tipo de informação, as quais diferenciam -se amplamente das informações alfanuméricas, o conceito de Qualidade de Serviço (QoS) precisou ser incorporado ao projeto deste tipo de servidor, visando proporcionar a entraga satifatória dos serviços solicitados. Aqualidade originalmente associada ao serviço, a fim de atender as necessidades dos usuários, pode ser modificada e desta forma, passar por um processo de adaptação às novas exigências dos mesmos. O trabalho de Dissertação de Mestrado apresentado tem como objetivo propor um modelo para a transmissão de fluxos MPEG-2 com QoS, a partir de servidores de armazenamento multimídia. Esta contribuição poderá posteriormente fazer parte de uma infra-estrutura maior, haja visto que o modelo proposto trata ainda dos processos de mapeamento e negociação dos parâmetros de Qualidade e Serviço executado durante a fase de configuração destas tranmissões. O presente trabalho baseia-se especificamente em servidores de vídeo MPEG-2 tendo como meio de transporte a Rede ATM, um vez que o mesmo interessa-se somente na definição de QoS ao nível desta tecnologia. A fim de que o embasamento necessário para a apresentação desta Dissertação fosse obtido, a exposição de alguns conceitos iniciais tornou-se essencialmente importante. Portanto, este trabalho introduz também os principais conceitos relativos a Aplicações Multimídia Distribuídas, Padrão de Compressão MPEG-2, Qualidade de Serviço, Tecnologia ATM e Sistema de Gerenciamento de Banco de Dados Multimídia e Servidores de Armazenamento Multimídia.

Made available in DSpace on 2014-10-09T12:34:23Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:10:32Z (GMT). No. of bitstreams: 0 / Dissertação (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

Made available in DSpace on 2014-10-09T12:34:23Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:10:32Z (GMT). No. of bitstreams: 0 / Este estudo teve como finalidade principal avaliar a qualidade de vida (QV) dos profissionais de saúde que compõem o serviço de radiodiagnóstico de um hospital da cidade de São Paulo. Além disso, objetivou conhecer o perfil desses profissionais, identificando as variáveis que podem influenciar a QV desses profissionais. Trata-se de um estudo descritivo e exploratório com abordagem quali-quantitativa. Os dados foram coletados usando os questionários: o instrumento abreviado de avaliação de QV - World Health Organization Quality of Life Instrument bref (WHOQOL-bref) da Organização Mundial da Saúde e um questionário sobre as variáveis de interesse: sociodemográficas, condições de trabalho e estilo de vida, ambos questionários auto-aplicáveis. A amostra foi constituída de 118 profissionais nas categorias de: médicos, tecnólogos/técnicos de radiologia, enfermeiros, técnicos e auxiliares de enfermagem, entre outros. A análise dos dados envolveu estatística descritiva, testes não paramétricos e o uso de um modelo de regressão linear. O grau de confiabilidade do instrumento foi avaliado por meio do Coeficiente Alfa de Cronbach (α). O WHOQOL-bref demonstrou ser um instrumento adequado, de aplicação fácil e rápida para a aferição da qualidade de vida; mostrou bom desempenho psicométrico e boa consistência interna (α=0,884). O estudo permitiu conhecer a percepção de qualidade de vida do grupo estudado. / Dissertação (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

This report deals with the attitudes within municipalities of open source software and open standards and if open source software may be an option to gain open standards. The aim has been to find out if open source software and open standards would be able to solve the lock-in problems that municipalities have against proprietary software. The study is conducted as an exploratory, inductive and qualitative study with depth interviews of subjectively selected informants as data collection method. A literature review has also been implemented by the relevant books and articles. Some economic determinants of municipalities to make use of open source software have not been considered in this study. The informants used in this study are all IT managers in a Swedish municipality and our key informants have been selected in a subjective manner based on the expertise they have in the subject. The conclusions drawn were that municipalities have been difficult to define standards and open standards, and that they do not automatically see the connection between open standards and open software. They also see different areas of interest for standardization. / Denna rapport tar upp kommuners inställning till öppna program och öppna standarder och om öppen programvara kan vara ett alternativ för att få öppna standarder. Syftet har varit att ta reda på om öppna program och öppna standarder skulle kunna lösa de problem som kommuner har med inlåsningar mot proprietär programvara. Studien är genomförd som en explorativ, induktiv och kvalitativ studie med djupintervju av subjektivt utvalda informanter som datainsamlingsmetod. En litteraturgranskning har också genomförts av relevanta böcker och artiklar. Några ekonomiska faktorer för kommuner att använda sig av öppen programvara har inte beaktats i denna studie. De informanter som använts i denna studie är alla ITchefer inom någon svensk kommun och nyckelinformanterna har valts ut på ett subjektivt sätt utifrån den expertkunskap de besitter inom ämnet. Slutsatserna som drogs var att kommuner har svårt att definiera standarder och öppna standarder, och att de inte med automatik ser kopplingen mellan öppna standarder och öppen programvara. De ser också olika områden som intressanta för en standardisering.

FASB and IASB recently decided current revenue recognition practices were in dire need of an update and released a converged standard on revenue recognition under ASU 606 and IFRS 15. The new standard hopes to improve financial reporting by removing inconsistencies, improve comparability and overall provide more useful information to financial statement users. This paper examines how the new revenue recognition standard will impact the retail industry. This is said to be the biggest accounting standard change since Sarbanes-Oxley Act in 2002 and companies across the globe are gearing up to adjust current accounting practices to be in compliance with the new requirements. Though the accounting world is aware of the potential impacts of this new standard, is it is difficult to quantify exactly how much revenues will differ due to this change. Retailers that rely on gift card breakage as a large revenue stream will see the most material effects on their financial statements. Revised standards regarding revenue from loyalty programs and returns will also change how revenue is recognized but will have less of an impact than revenue from gift cards. Retailers can also expect their accountants to spend an abundant amount of time altering their accounting systems and restating historical data using the new method to calculate new revenue figures.

The potential for probing the Standard Model of elementary particle physics by measuring the interactions of W -bosons with Z0-bosons and photons (WW and WWZ triple gauge-boson couplings) using TeV-scale proton-proton collisions is described in the context of the ATLAS detector at the 14 TeV Large Hadron Collider (LHC). The ATLAS detector and LHC are currently under construction at the European Organization for Nuclear Research (CERN), with the rst data expected in 2006. New analysis techniques are presented in this thesis: (1) A new strategy for placing limits on the consistency of measured anomalous triple gauge-boson coupling parameters with the Standard Model is presented. The strategy removes the ambiguities of form factors, by reporting the limits as a function of a cuto operating on the diboson system invariant mass. (2) The `optimal observables' analysis strategy is investigated in the context of hadron colliders, and found to be not competitive, as compared to other strategies. (3) Techniques for measuring the energy dependence of anomalous couplings are presented .. . / Graduate / 0798

An important question at present in particle physics is whether the recently discovered boson with a mass of about 125 GeV is the Standard Model Higgs boson. A Standard Model Higgs boson with a mass of 125 GeV will predominantly decay to b-quark pairs. This work presents the author's contribution to the search with the ATLAS detector for a Standard Model Higgs boson produced in association with a W or Z boson and decaying to b-quark pairs. In order to search for the decay modes ZH → vvb¯b, WH → lvb¯b and ZH → l¯lb¯b, where l is either an electron or muon, events with zero, one or two electrons or muons are considered in 20:3 fb¯1 of 8 TeV LHC data. A Standard Model Higgs boson is not observed decaying to b-quark pairs, although neither is this decay mode ruled out. A Standard Model Higgs boson with a mass of between 110 GeV and 115 GeV is excluded. For mH = 125 GeV the observed (expected) upper limit on the cross- section times the branching ratio is found to be 2.16 (1.07) times the Standard Model prediction. For a Standard Model Higgs boson with a mass of 125 GeV, the best fit signal strength is μ = 1:09 +0:43-0:42 (stat) +0:44-0:37 (syst) = 1:09 +0:61-0:56. The combined results are consistent with a Standard Model Higgs boson with a mass of 125 GeV. The author's own work is presented, including estimation of systematic uncertainties on WH → lvb¯b modelling, and future ATLAS data selection methods for WH → lvb¯b searches. Overviews of underlying theoretical matters and the experimental facilities used are given.

M.A. / The aim of this dissertation is to establish the relevance, if not, of the debate surrounding standard and non-standard language with specific reference to the current South African situation. Some background to the debate is provided by means of a concise study of literature where opposing perspectives of several South African and foreign linguists are analysed. The debate is consequently viewed from an educational perspective. Attention is also paid to extra-linguistic factors currently influencing the unique linguistic situation in South Africa; South Africa's membership of Africa as well as its twenty-first century time-spirit comes under scrutiny. An empirical study tries to establish attitudes of a group tertiary college students towards varieties of English, i.e. Standard English, Black English Vernacular and Black South African English. Certain deductions are made from all aquired information whereupon some recommendations follow.

The inability to share resources in commercial and institutional computer music studios results in non-optimal resource utilisation. The use of computers to process, store and communicate data can be extended within these studios, to provide the capability of sharing resources amongst their users. This thesis describes a computer music network which was designed for this purpose. Certain devices had to be custom built for the implementation of the network. The thesis discusses the design and construction of these devices.