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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.
571

Percepção dos servidores da Universidade Federal do Maranhão sobre o processo de avaliação de desempenho

Feitosa, Conceição de Maria Correa 20 January 2015 (has links)
The theme of Performance Evaluation is a really important subject of the modern organizational system, given its importance in the context of human resource management policies, not only for the groups that belongs to the private sector, as well as those that are part of the public sector. In general, your implementation have been appreciated in governmental institutions for decades, in modes of legal acts and regulations whose efficacy reached the administrative universe of Brazilian Federal Universities, among them, the Federal University of Maranhão-UFMA, in which , the coordination of activities are looked by Division of Performance Evaluation. This study aims to analyze the problems of perception of Federal University of Maranhao workers on the Performance Evaluation process, seeking to study how this perception it s correlated with institutional goals. The study consisted of 270 questionnaires with technical and administrative group. An interview with the Director of Performance Evaluation Division was held, whose synthesis consists, with these questionnaires source of information for the interpretation of the evaluation process occurred in UFMA. The quantitative data analysis was performed using descriptive statics reveled that servers know about the Performance Evaluation and many of them have participated more than once of this process, and they believe in the importance of this questionnaire to evaluate the pros and know the factors that motivate them to work and carry their activities with better performance. Nevertheless, the results of evaluations requires further dissemination to the servers and the possibility of the workers to evaluate their minds, leaving between them the idea of their applicability is more focused on wage gains, of interests in a meritocratic perspective where it s purpose would be to contribute to the professional career planning policy. / O tema da Avaliação de Desempenho constitui assunto dos mais relevantes no cenário organizacional moderno, dada sua importância no contexto das políticas de administração de recursos humanos não apenas das organizações ligadas à iniciativa privada, como também daquelas que fazem parte do Poder Público. De modo geral, a sua implementação vem ganhando destaque nas instituições governamentais ao longo das últimas décadas, por meio de atos legais e normativos cuja eficácia alcançou o universo administrativo das universidades federais, dentre elas a Universidade Federal do Maranhão UFMA, sendo que, nesta ultima, a coordenação das atividades encontra-se a cargo da Divisão de Avaliação de Desempenho. O presente estudo se propõe a analisar a problemática da percepção dos servidores da Universidade Federal do Maranhão sobre o processo de Avaliação de Desempenho, buscando-se verificar como se dá essa percepção e sua correlação com os objetivos institucionais. Os instrumentos de pesquisa consistiram em 270 questionários aplicados junto aos servidores técnico-administrativos. Foi realizada uma entrevista com a Diretora da Divisão de Avaliação de Desempenho, cuja síntese compõe, juntamente com os referidos questionários, fonte de informações para as interpretações do processo avaliativo ocorrido na UFMA. A análise dos dados quantitativos foi realizada por meio de estatística descritiva. Os resultados quantitativos obtidos revelaram que os servidores que participaram da pesquisa conhecem a Avaliação de Desempenho sendo que muitos deles já participaram mais de uma vez desse processo, e que não se opõem a sua realização por considerarem importante que se avaliem os profissionais e que se conheçam os fatores que os motivam a trabalhar e a realizar suas atividades com melhor performance. Apesar disso, os resultados das avaliações carecem de maior divulgação junto aos servidores e da possibilidade de os subordinados avaliarem suas chefias, restando entre eles a ideia de que sua aplicabilidade se encontra mais voltada a interesses de ganhos salariais, numa perspectiva meritocrática, onde sua finalidade precípua seria a de contribuir para a política de encarreiramento profissional.
572

Estratégias de internacionalização e seus resultados : um caso Sul Rio-Grandense

Machado, Fernanda Nedwed January 2009 (has links)
Como as empresas decidem e implantam estratégias de internacionalização, qual o valor adicionado e como avaliar consistentemente os resultados obtidos? Procurando responder essa questão, estuda-se o caso da gaúcha Artecola, empresa avançada em sua internacionalização. Descreve-se sua trajetória internacional e expõe-se o desempenho internacional registrado pela empresa, bem como os resultados identificados pelos seus dirigentes; coletados por meio de instrumento construído em formato BSC, considerando-se as características da internacionalização e os seus benefícios potenciais (Vantagens de Custo - VC, Benefícios de Rede - BR e Oportunidades de Aprendizado - AO). São identificados os padrões adotados segundo as teorias estudadas, da vertente econômica e da comportamental. Realiza-se discussão sobre a aplicabilidade dos indicadores de desempenho empregados. O processo divide-se em cinco fases e tem início com esporádicas exportações e uma postura reativa por parte da empresa na primeira fase (1963-1971), o que justifica a falta de registros do desempenho internacional. A empresa reconhece a necessidade de atualizar-se tecnologicamente através de parcerias com players internacionais avançados. Então, capacita-se a fim de viabilizar tais parcerias; além das OA, a empresa obtém VC em processos internos, conforme os resultados levantados pelos dirigentes (1972-1982). As primeiras parcerias são estabelecidas, e as vantagens de propriedade da Artecola são alavancadas na terceira fase (1983-1996). A busca por OA e VC (em processos internos) acaba na obtenção de BR e VC nos resultados financeiros. Novamente, os resultados são levantados através de relatos. A Artecola tem a sua expansão física iniciada concomitantemente à elaboração de seu primeiro planejamento estratégico. Centros de distribuição são inaugurados, e a internacionalização passa a integrar a Intenção Estratégica. A empresa reconhece mercados com vantagens de localização e percebe que suas vantagens de propriedade podem ser neles internalizadas. O controle do desempenho internacional apresenta seus primeiros registros. O compromisso de "ser referência na América Latina" traduz-se na perseguição por BR, obtidos com VC nos resultados financeiros, na quarta fase (1997-2001). A quinta fase se estende até 2008 e é marcada pela internalização das vantagens competitivas sob a forma de aquisições. As parcerias tecnológicas suportam a manutenção dessas vantagens. A compra de empresas locais permite rápido acesso ao mercado e ao conhecimento sobre ele. A Artecola reafirma a sua Intenção, que objetiva primordialmente os BR e as VC em resultados financeiros, atingidos com OA e levantados com maior número de registros da empresa, os quais parecem ter sua evolução atrelada ao grau de envolvimento da empresa em seu processo. O conjunto de indicadores objetivos e subjetivos empregados permite a identificação dos benefícios alcançados em cada fase, à exceção da primeira. Em termos de benefícios, o processo parece seguir seqüencialmente as relações de causa e efeito que interligam as perspectivas do BSC. Interpreta-se o processo de internacionalização como sustentado teoricamente pelo Paradigma Eclético - contudo, não se pode negar o Empreendedorismo Internacional nos seus primórdios e a presença de gradualismo durante todo o período estudado, com o aumento do nível de complexidade das atividades internacionais. Isso significa que uma teoria sozinha não dá conta de explicar o processo na íntegra satisfatoriamente. / How do companies decide and implement internationalization strategies, what is the added value and how to consistently evaluate the obtained results? In search of an answer, it is studied the case of Artecola, an internationalized company from Rio Grande do Sul. It is described its international trajectory and exposed the international performance registered by the company and the results identified by its directors; collected with a BSC-format instrument, build taking internationalization characteristics and potential benefits (Cost Advantages - CA, Network Benefits - NB and Learning Opportunities - LO) into consideration. The patterns adopted are identified according to behavioral and to economic theories. It is discussed the used indicators application. Artecola's internationalization process is divided into five phases and starts with sporadic exportations and a reactive corporate attitude (1963-1971) that justify the lack of international performance registration. Artecola realizes the need for technological updating by means of agreements with advanced international players. Then Artecola get restructured for making the alliances feasible; besides LO, the company obtains CA in internal-business-processes, as pointed out by the directors (1972-1982). The first alliances are formed and Artecola's ownership advantages are leveraged in the third phase (1983-1996). The search for LO and CA (in internal-business-processes) ends with acquisition of NB and CA in finance. Once again data comes from the directors' accounts. Artecola begins its physical expansion at the same time its first strategic planning is being established. Warehouses are open and internationalization becomes part of the Strategic Intention. Artecola recognizes location advantaged markets in which it can internalize its ownership advantages. International performance registration exhibits its first records. The intention of "being reference in Latin America" means a search for NB, obtained with CA in finance in the fourth phase (1997-2001). In the fifth phase (2002 on), Artecola internalizes its competitive advantages making acquisitions. Technological agreements hold the maintenance of these advantages up. Acquiring local companies allows Artecola to rapidly access the market and information on it. The company restates its Intention aiming principally NB and CA in finance, achieved with LO and identified with much more records that seem to have their evolution linked to Artecola's level of involvement in its own process. The objective and subjective indicators all together permit the identification of the achieved benefits in each phase but the first one. In terms of benefits, the process seems to sequentially follow the cause and effect relations that connect the BSC perspectives. It is interpreted that the process is supported by the Eclectic Paradigm - despite the existence of International Entrepreneurship in its beginning and the presence of increasing commitment and level of complexity in the international activities, which means that a theory cannot satisfactorily explain the whole process on its own.
573

O desenvolvimento sustentável e a empresa moderna : o caso da Bunge Brasil

Bergamaschi, Cristina do Carmo Postal January 2010 (has links)
A cada ano que passa o surgimento de novas empresas e a competitividade está mais dinâmica e complexa, o que dificulta a permanência das mesmas dentro do mercado competitivo, gerando assim preocupações e incertezas em relação ao futuro. Com esta conscientização, as empresas modernas devem estar baseadas na relação de manter o equilíbrio econômico, ambiental e social, ou seja, estabelecerem metas de desenvolvimento sustentável. O objetivo deste trabalho foi avaliar identificar e descrever a importância do desenvolvimento sustentável para que as empresas modernas se mantenham dentro de um mercado competitivo futuro. No qual se utilizou a empresa Bunge Brasil para ilustrar quais são as metas e critérios que devem ser avaliados através de indicadores de desempenho de sustentabilidade. O indicador que foi utilizado no estudo de caso foi o GRI, pois é um indicador que tem foco nas três dimensões de sustentabilidade e está direcionado para todos os stakeholders, onde as informações são públicas e está atualmente em um processo de padronização internacional de relatórios. O que se verificou é que as empresas estão cientes que devem ser sustentáveis e estão se preparando para se manterem no mercado competitivo, e caso suas ações não forem executadas corretamente podem levar a sua exclusão do mercado. A não exigência legal da divulgação de informações provavelmente pode estar ocultando a real situação de uma empresa, mesmo que os stakeholders tenham um papel fundamental em monitorar e participar da tomada de decisões das empresas. As empresas sabem da real necessidade de serem sustentáveis através da gestão de responsabilidade social corporativa, ou seja, estarem levando bem estar para toda a sociedade, gerando ganhos financeiros, bem como preservar o meio ambiente para que desta forma alcancem o desenvolvimento sustentável e se mantenham integradas dentro de um mercado competitivo futuro. / With each passing year, the uprising of new companies and the competitiveness among them become more dynamic and complex. These factors obstruct the permanence of such companies in the competitive market, creating, thus, anxieties and doubts about the future. With this awareness, modern companies must be based on maintaining economical, environmental and social balance, i.e., companies must establish sustainable development goals. The objective in this work is to evaluate, identify and describe the importance of sustainable development so that modern companies can keep themselves in a future competitive market. I used as the example the Bunge Brasil company, to illustrate the goals and criteria to be evaluated through sustainability performance indicators. The indicator used in the study was the GRI indicator, since it focuses on the three sustainability dimensions and since it is directed to all stakeholders; where information is public and also because the indicator is currently going through a process of international standardization of reports. I have observed that companies are aware they must be sustainable, and that they are getting ready to maintain themselves in the competitive market. They also know that, if their actions are not correctly carried out, they may be excluded from the market. Not legally requiring the disclosure of information may be the reason why the real situation of a company remains obscure, even if the stakeholders have a fundamental role in monitoring and participating in the companies’ decision-making process. Companies are aware of the real necessity of being sustainable through management of corporate social responsibility, that is, of providing well-being to society, obtaining financial profits as well as preserving the environment in order that they can achieve sustainable development and keep themselves integrated in a future competitive market.
574

Intelligent computing applications to assist perceptual training in medical imaging

Dong, Leng January 2016 (has links)
The research presented in this thesis represents a body of work which addresses issues in medical imaging, primarily as it applies to breast cancer screening and laparoscopic surgery. The concern here is how computer based methods can aid medical practitioners in these tasks. Thus, research is presented which develops both new techniques of analysing radiologists performance data and also new approaches of examining surgeons visual behaviour when they are undertaking laparoscopic training. Initially a new chest X-Ray self-assessment application is described which has been developed to assess and improve radiologists performance in detecting lung cancer. Then, in breast cancer screening, a method of identifying potential poor performance outliers at an early stage in a national self-assessment scheme is demonstrated. Additionally, a method is presented to optimize whether a radiologist, in using this scheme, has correctly localised and identified an abnormality or made an error. One issue in appropriately measuring radiological performance in breast screening is that both the size of clinical monitors used and the difficulty in linking the medical image to the observer s line of sight hinders suitable eye tracking. Consequently, a new method is presented which links these two items. Laparoscopic surgeons have similar issues to radiologists in interpreting a medical display but with the added complications of hand-eye co-ordination. Work is presented which examines whether visual search feedback of surgeons operations can be useful training aids.
575

Vers une modélisation et un dimensionnement automatique des systèmes répartis / Automatic performance modelling of black boxes towards self-sizing

Harbaoui, Ahmed 21 October 2011 (has links)
De nos jours, les systèmes distribués sont caractérisés par une complexité croissante de l'architecture, des fonctionnalités et de la charge soumise. Cette complexité induit souvent une perte de la qualité de service offerte, ou une saturation des ressources, voire même l'indisponibilité des services en ligne, en particulier lorsque la charge est importante. Afin d'éviter les désagrèments causés par d'importantes charges et remplir le niveau attendu de la qualité de service, les systèmes nécessitent une auto-gestion, en optimisant par exemple un tier ou en le renforçant à travers la réplication. Cette propriété autonome requiert une modélisation des performances de ces systèmes. Visant cet objectif, nous développons un framework basé sur une méthodologie théorique et expérimentale d'identification automatique de modèle et de dimensionnement, fournissant en premier un modèle de réseau de file d'attente pour un système distribué. Ensuite, ce Modèle est utilisé au sein de notre framwork pour dimensionner le système à travers une analyse ou une simulation du réseau de file d'attente. / Modern distributed systems are characterized by a growing complexity of their architecture, functionalities and workload. This complexity, and in particular significant workloads, often lead to quality of service loss, saturation and sometimes unavailability of on-line services. To avoid troubles caused by important workloads and fulfill a given level of quality of service (such as response time), systems need to self-manage, for instance by tuning or strengthening one tier through replication. This autonomic feature requires performance modelling of systems. In this objective, we developed a framework based on a theoretical and experimental approach for automatic identification process and sizing . This framework provid a queuing model for a distributed system. Then, this model is used in our Framwork to size the system through an analysis or simulation.
576

Évaluation de performance d'un système de fusion d'informations : application au traitement d'images 3D / Performance evaluation of a information fusion systems

Lamallem, Abdellah 17 July 2012 (has links)
Les systèmes de fusion d'informations sont principalement composés, d'outils mathématiques permettant de réaliser la représentation et la combinaison des données. L'objectif de ces systèmes peut s'exprimer comme un problème de décision sur la vérité ou la vraisemblance d'une proposition étant donné une ou plusieurs informations issues de différentes sources. Les systèmes de fusion cherchent à exploiter au mieux les propriétés des sources de données en tenant compte de l'imperfection de l'information (imprécis, incomplet, ambigu, incertain, etc.) ainsi que l'aspect redondant, complémentaire et conflictuel des informations. Le système de fusion concerné par cette thèse a la capacité d'intégrer dans ses traitements de la connaissance experte. On le nomme système de fusion coopératif. Puisque ce système cherche à intégrer pleinement les experts dans son fonctionnement, il est important de mettre à disposition des utilisateurs des informations aidant à mieux comprendre la fusion réalisée. De tels systèmes disposent de nombreux paramètres à régler et ces derniers ont un impact important sur la qualité des résultats obtenus. Une des grandes problématiques liées à ces systèmes de fusion d'informations porte sur l'évaluation de leurs performances. L'évaluation doit permettre d'améliorer la qualité de la fusion, d'améliorer l'interaction expert/système et d'aider à mieux ajuster les paramètres du système. En général, l'évaluation de tels systèmes est réalisée en fin de chaîne par une évaluation globale du résultat. Mais, celle-ci ne permet pas de savoir précisément l'endroit de la chaîne qui nécessite une intervention. Une autre difficulté réside dans le fait qu'une vérité terrain complète sur le résultat n'est pas toujours disponible, ce qui complique la tâche d'évaluation de performances de ce type de systèmes. Le contexte applicatif de ce travail est l'interprétation d'images tridimensionnelles (images tomographiques, images sismiques, images synthétiques, ...). Dans ce contexte une évaluation locale des systèmes de fusion d'informations, a été mise en place. L'approche a montré son intérêt dans l'ajustement efficace des paramètres et dans la coopération avec l'expert. / Information fusion systems are mainly composed from mathematical tools allowing to realize data representation and combination. The aim of these systems can be expressed as a decision problem on the truth or plausibility of a proposition based on several information coming from different sources. Fusion try to manage the characteristics of the sources taking into account the information imperfection (inaccurate, incomplete, ambiguous, uncertain, etc.) and the redundant aspect, the complement and the conflictual aspect of information. Fusion systems concerned by this thesis have the ability to integrate the expert knowledge in their treatments. They are called cooperative fusion systems. Since these systems are trying to associate experts, it is important to provide to the users some informations that help them to better understand the fusion process. Such systems have many parameters that must be adjusted. These parameters have an important impact on the quality of the obtained results. One of the major problems associated to information fusion systems concerns the evaluation of their performance. A pertinent evaluation will allow to improve the quality of the fusion, to improve expert/system interaction and to better adjust the parameters of the system. Generally, the evaluation of such systems is made in the ouput of the processing chain by a global evaluation of the results. But it does not allow to know the precise subpart of the treatement chain that requires an adjustment of its parameters. Another difficulty releases in the fact that a complete ground truth of the result is not always available, which complicates the performance evaluation task. The application context of this work is the interpretation of 3D images (tomographic images, seismic images, synthetic images, ...). In this context, a local evaluation of the information fusion systems has been implemented. The approach has shown its interest in the efficient adjustment of parameters and the cooperation with expert.
577

Workload Traces Analysis and Replay in Large Scale Distributed Systems / Analyse de rejeu de traces de charge dans les grands systèmes de calcul distribués

Emeras, Joseph 01 October 2013 (has links)
L'auteur n'a pas fourni de résumé en français / High Performance Computing is preparing the era of the transition from Petascale to Exascale. Distributed computing systems are already facing new scalability problems due to the increasing number of computing resources to manage. It is now necessary to study in depth these systems and comprehend their behaviors, strengths and weaknesses to better build the next generation.The complexity of managing users applications on the resources conducted to the analysis of the workload the platform has to support, this to provide them an efficient service.The need for workload comprehension has lead to the collection of traces from production systems and to the proposal of a standard workload format. These contributions enabled the study of numerous of these traces. This also lead to the construction of several models, based on the statistical analysis of the different workloads from the collection.Until recently, existing workload traces did not enabled researchers to study the consumption of resources by the jobs in a temporal way. This is now changing with the need for characterization of jobs consumption patterns.In the first part of this thesis we propose a study of existing workload traces. Then we contribute with an observation of cluster workloads with the consideration of the jobs resource consumptions over time. This highlights specific and unattended patterns in the usage of resources from users.Finally, we propose an extension of the former standard workload format that enables to add such temporal consumptions without loosing the benefit of the existing works.Experimental approaches based on workload models have also served the goal of distributed systems evaluation. Existing models describe the average behavior of observed systems.However, although the study of average behaviors is essential for the understanding of distributed systems, the study of critical cases and particular scenarios is also necessary. This study would give a more complete view and understanding of the performance of the resources and jobs management. In the second part of this thesis we propose an experimental method for performance evaluation of distributed systems based on the replay of production workload trace extracts. These extracts, replaced in their original context, enable to experiment the change of configuration of the system in an online workload and observe the different configurations results. Our technical contribution in this experimental approach is twofold. We propose a first tool to construct the environment in which the experimentation will take place, then we propose a second set of tools that automatize the experiment setup and that replay the trace extract within its original context.Finally, these contributions conducted together, enable to gain a better knowledge of HPC platforms. As future works, the approach proposed in this thesis will serve as a basis to further study larger infrastructures.
578

A Reproducible Research Methodology for Designing and Conducting Faithful Simulations of Dynamic HPC Applications / Méthodologie de recherche reproductible adaptée à la conception et à la conduite de simulations d'applications scientifique multitâche dynamiques

Stanisic, Luka 30 October 2015 (has links)
L'évolution de l'informatique haute performance s'est réorientée au cours de cette dernière décennie. L'importante consommation énergétique des plates-formes modernes limite fortement la miniaturisation et l'augmentation des fréquences des processeurs. Cette contrainte énergétique a poussé les fabricants de matériels à développer de nombreuses architectures alternatives afin de répondre au besoin croissant de performance imposé par la communauté scientifique. Cependant, programmer efficacement sur une telle diversité de plate-formes et exploiter l'intégralité des ressources qu'elles offrent s'avère d'une grande difficulté. La tendance générale de conception d'application haute performance, basée sur un gros code monolithique offrant de nombreuses opportunités d'optimisation, est ainsi devenu de plus en plus difficile à appliquer en raison de la difficulté d'implémentation et de maintenance de ces codes complexes. Par conséquent, les développeurs de telles applications considèrent maintenant une approche plus modulaire et une exécution dynamique de celles-ci. Une approche populaire est d'implémenter ces applications à plus haut niveau, indépendamment de l'architecture matérielle, suivant un graphe de tâches où chacune d'entre elles correspond à un noyau de calcul soigneusement optimisé pour chaque architecture. Un système de runtime peut ensuite être utilisé pour ordonnancer dynamiquement ces tâches sur les ressources de calcul.Développer ces solutions et assurer leur bonne performance sur un large spectre de configurations reste un défit majeur. En raison de la grande complexité du matériel, de la variabilité des temps d'exécution des calculs et de la dynamicité d'ordonnancement des tâches, l'exécution des applications n'est pas déterministe et l'évaluation de la performance de ces systèmes est très difficile. Par conséquent, il y a un besoin de méthodes systématiques et reproductibles pour la conduite de recherche ainsi que de techniques d'évaluation de performance fiables pour étudier ces systèmes complexes.Dans cette thèse, nous montrons qu'il est possible de mettre en place une étude propre, cohérente et reproductible, par simulation, d'applications dynamiques. Nous proposons une méthode de travail unique basée sur deux outils connus, Git et Org-mode, pour la conduite de recherche expérimentale reproductible. Cette méthode simple permet une résolution pragmatique de problèmes comme le suivi de la provenance ou la réplication de l'analyse des données. Notre contribution à l'évaluation de performance des applications dynamiques consiste au design et à la validation de simulation/émulation hybride gros-grain de StarPU, un runtime dynamique basé sur un graphe de tâches pour architecture hybride, au dessus de SimGrid, un simulateur polyvalent pour systèmes distribués. Nous présentons comment notre solution permet l'obtention de prédictions fiables de performances d'exécutions réelles dans un large panel de machines hétérogènes sur deux classes de programme différentes, des applications d'algèbre linéaire dense et creuse, qui sont représentatives des applications scientifiques. / The evolution of High-Performance Computing systems has taken asharp turn in the last decade. Due to the enormous energyconsumption of modern platforms, miniaturization and frequencyscaling of processors have reached a limit. The energy constraintshas forced hardware manufacturers to develop alternative computerarchitecture solutions in order to manage answering the ever-growingneed of performance imposed by the scientists and thesociety. However, efficiently programming such diversity ofplatforms and fully exploiting the potentials of the numerousdifferent resources they offer is extremely challenging. Thepreviously dominant trend for designing high performanceapplications, which was based on large monolithic codes offeringmany optimization opportunities, has thus become more and moredifficult to apply since implementing and maintaining such complexcodes is very difficult. Therefore, application developersincreasingly consider modular approaches and dynamic applicationexecutions. A popular approach is to implement the application at ahigh level independently of the hardware architecture as DirectedAcyclic Graphs of tasks, each task corresponding to carefullyoptimized computation kernels for each architecture. A runtimesystem can then be used to dynamically schedule those tasks on thedifferent computing resources.Developing such solutions and ensuring their good performance on awide range of setups is however very challenging. Due to the highcomplexity of the hardware, to the duration variability of theoperations performed on a machine and to the dynamic scheduling ofthe tasks, the application executions are non-deterministic and theperformance evaluation of such systems is extremelydifficult. Therefore, there is a definite need for systematic andreproducible methods for conducting such research as well asreliable performance evaluation techniques for studying thesecomplex systems.In this thesis, we show that it is possible to perform a clean,coherent, reproducible study, using simulation, of dynamic HPCapplications. We propose a unique workflow based on two well-knownand widely-used tools, Git and Org-mode, for conducting areproducible experimental research. This simple workflow allows forpragmatically addressing issues such as provenance tracking and dataanalysis replication. Our contribution to the performance evaluationof dynamic HPC applications consists in the design and validation ofa coarse-grain hybrid simulation/emulation of StarPU, a dynamictask-based runtime for hybrid architectures, over SimGrid, aversatile simulator for distributed systems. We present how thistool can achieve faithful performance predictions of nativeexecutions on a wide range of heterogeneous machines and for twodifferent classes of programs, dense and sparse linear algebraapplications, that are a good representative of the real scientificapplications.
579

Liderança e gestão em TI: uma análise do desempenho de gestores de TI baseada em competências críticas de gestão. / IT management and leadership: an analysis of the IT managers performance based on critical management competencies.

Eduardo Margara da Silva 26 March 2013 (has links)
A fronteira entre as áreas de negócios e as de tecnologia de informação (TI) vai deixando de existir e isso exige competências de gestão, baseadas em novos conhecimentos, habilidades e atitudes de liderança, que extrapolam as questões técnicas. A literatura disponível discute quais são as competências críticas de forma isolada, não as relaciona com a competitividade das empresas e não analisa o desempenho dos gestores em cada uma das competências consideradas críticas. Com o objetivo de compreender quais são as competências críticas de gestão em TI e qual é o desempenho dos gestores nessas competências, foi efetuada, neste estudo, uma revisão da teoria, a fim de elaborar um modelo de avaliação de desempenho e avaliar 149 gestores de TI. Essa avaliação foi baseada em 22 competências de gestão, organizadas em cinco áreas: gestão da estratégia de TI, gestão da inovação e tecnologia, gestão do valor da TI, gestão das equipes de TI e gestão do desempenho da TI. Na análise dos dados foram testadas dez hipóteses de pesquisa sobre as prioridades e o desempenho dos gestores de TI para poder analisar se há variação em função de fatores externos ligados ao negócio (orientação competitiva, segmento de mercado e porte do negócio) e de fatores internos (processos e funções exercidas em TI). Com base nos resultados, foi possível constatar que os fatores internos, mais que os externos, influenciam o desempenho dos gestores de TI, principalmente dependendo da função por ele ocupada dentro da organização de TI. As avaliações de competências dos gestores de infraestrutura foram superiores aos gestores de desenvolvimento e na escolha de prioridades, um maior número de gestores de infraestrutura elegeu a gestão da inovação e a gestão do valor como prioridade para o negócio. / The frontier between business and technology is reducing with technologies advance and it is requiring management competencies, based on new knowledge, skills and attitudes of leadership that go beyond technical issues. The literature discusses which competencies are critical, but it is not taking in count the business competitiveness and also does not analyzes the managers performance in each critical competency. Aiming to understand which competencies are critical in IT management and how is the performance of managers on these competencies, in this study has been conducted a theory review in order to develop a performance evaluation model and evaluate 149 IT managers based on 22 management competencies, which were organized in five areas: IT strategy management, innovation and technology management, IT value management, IT team management and IT performance management. In data analysis were tested ten research hypotheses about the priorities and performance of IT managers in order to conclude whether there is performance variation due to external factors related to the business (competitive orientation, market segment and company size) and internal factors (processes and functions in IT) that can influence the performance evaluations based on management competencies. Based on the results, it was found that the internal factors rather than external ones, influence the performance of managers, mainly depending on the role they have within the IT organization. The Competencies evaluations of IT infrastructure managers were higher than systems development managers and also most of them chose innovation management and value management as a business priority.
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Avaliação de desempenho no instituto federal de educação, ciência e tecnologia da Paraíba (IFPB): implicações para a aprendizagem organizacional.

Andrade , Rossana Figueirêdo Nunes de 29 June 2017 (has links)
Submitted by Fernando Souza (fernando@biblioteca.ufpb.br) on 2017-10-04T12:24:53Z No. of bitstreams: 1 arquivototal.pdf: 4305290 bytes, checksum: d6eb506a6715e3db086393c6303d8f3f (MD5) / Made available in DSpace on 2017-10-04T12:24:53Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 4305290 bytes, checksum: d6eb506a6715e3db086393c6303d8f3f (MD5) Previous issue date: 2017-06-29 / In the current context of organizations, people need to reflect on their actions by identifying the aspects that need to be developed in order to boost their competencies and improve their performance. In this sense, a professional performance evaluation policy, integrated with other people management systems, can contribute to the reflection-action-reflection process, providing people with a rethinking of their professional practices, in addition to identify their skills gaps, as well as their potentialities. In this way, learning processes can be stimulated to the development of new competencies, which, consequently, promote professional and organizational development. Thus, the present research aimed to identify the implications of the process of performance evaluation of Administrative Technicians in Education for organizational learning at the Federal Institute of Education Science and Technology of Paraíba. To this purpose, the study was based on theoretical references that dealt with the phenomena of performance evaluation and organizational learning, reflecting on the practices, critically, identifying the implications and the negative aspects involved, in order to have a contextual and systemic understanding of the multiple intervening factors in both processes. In terms of methodology, the research is characterized as a field, delimited by the qualitative approach and, based on the objectives, adopted procedures supported by the descriptive, exploratory and documentary typology, using as a data collection instrument the semistructured interview backed by a Guiding questions. For the analysis of the data collected, we used the Content Analysis method according to Bardin (2011), Richardson (1999), Laville and Dionne (1999). The results of the research evidenced that the process of Performance Evaluation (AD), as it is currently being carried out in the IFPB, has a more negative view, in terms of limitations, than positive view, in terms of potential, based on the perception of the managers interviewed. However, AD can be a very important tool for learning, change and development of the public employee, the work team and the entire organization, provided that it is performed correctly, conscientiously and responsibly. In order for AD to exert its full potential to stimulate learning with a focus on change and development, it is necessary that the process be carried out in the correct way, with seriousness and veracity in the information, always seeking the construction of an interactive space, dialogue, feedback and sharing among those involved, in order to enhance their effects in terms of individual and organizational learning. / No contexto atual das organizações, as pessoas necessitam refletir sobre suas ações identificando os aspectos que precisam ser desenvolvidos, de modo a potencializar suas competências e melhorar seu desempenho. Neste sentido, uma política de avaliação de desempenho profissional, integrada aos demais sistemas de gestão de pessoas, pode contribuir para o processo de reflexão-ação-reflexão, proporcionando nas pessoas um repensar sobre suas práticas profissionais, além de identificar suas lacunas de competências, bem como suas potencialidades. Desse modo, os processos de aprendizagens podem ser estimulados para o desenvolvimento de novas competências, que, consequentemente, promovem o desenvolvimento profissional e organizacional. Assim, a presente pesquisa objetivou identificar as implicações do processo de avaliação de desempenho dos Técnicos Administrativos em Educação para a aprendizagem organizacional no Instituto Federal de Educação Ciência e Tecnologia da Paraíba. Para tanto, o estudo ancorou-se em referenciais teóricos que trataram dos fenômenos da avaliação de desempenho e da aprendizagem organizacional, refletindo sobre suas práticas, de modo crítico, identificando suas implicações e os aspectos negativos envolvidos, de modo a ter uma compreensão contextual e sistêmica dos múltiplos fatores intervenientes em ambos os processos. Em termos metodológicos, a pesquisa caracteriza-se como de campo, delimitada pela abordagem qualitativa e que, a partir de seus objetivos, adotou procedimentos respaldados pela tipologia descritiva, exploratória e documental, utilizando como instrumento de coleta dos dados a entrevista semiestruturada respaldada por um roteiro de questões norteadoras. Para a análise dos dados coletados foi utilizado o método da Análise de Conteúdo segundo Bardin (2011), Richardson (1999), Laville e Dionne (1999). Os resultados da pesquisa evidenciaram que o processo de AD, da forma como está sendo realizado atualmente no IFPB, tem uma visão mais negativa em termos de limitações do que positiva em termos de potenciais, baseada na percepção dos gestores entrevistados. No entanto, a AD pode se constituir como uma ferramenta muito importante para aprendizagem, mudança e desenvolvimento do servidor, da equipe de trabalho e de toda a organização, desde que seja realizada de maneira correta, consciente e com responsabilidade. Para que a AD possa exercer todo o seu potencial de estímulo ao aprendizado com foco na mudança e no desenvolvimento, faz-se necessário que o processo seja realizado da maneira correta, com seriedade e veracidade nas informações, buscando sempre a construção de um espaço interativo, dialogado, de feedback e de compartilhamento entre os envolvidos, de modo a potencializar seus efeitos em termos de aprendizagem individual e organizacional.

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