779 resultados para Architectural integration


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The purpose of this paper is to evaluate the recent trend in European economic affairs - the desire for integration. These plans and proposals were an expression of the need in the post war era for economic planning on a regional scale. It was in this respect that Europe experimented in a new approach to international economics.

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Due to the increase in water demand and hydropower energy, it is getting more important to operate hydraulic structures in an efficient manner while sustaining multiple demands. Especially, companies, governmental agencies, consultant offices require effective, practical integrated tools and decision support frameworks to operate reservoirs, cascades of run-of-river plants and related elements such as canals by merging hydrological and reservoir simulation/optimization models with various numerical weather predictions, radar and satellite data. The model performance is highly related with the streamflow forecast, related uncertainty and its consideration in the decision making. While deterministic weather predictions and its corresponding streamflow forecasts directly restrict the manager to single deterministic trajectories, probabilistic forecasts can be a key solution by including uncertainty in flow forecast scenarios for dam operation. The objective of this study is to compare deterministic and probabilistic streamflow forecasts on an earlier developed basin/reservoir model for short term reservoir management. The study is applied to the Yuvacık Reservoir and its upstream basin which is the main water supply of Kocaeli City located in the northwestern part of Turkey. The reservoir represents a typical example by its limited capacity, downstream channel restrictions and high snowmelt potential. Mesoscale Model 5 and Ensemble Prediction System data are used as a main input and the flow forecasts are done for 2012 year using HEC-HMS. Hydrometeorological rule-based reservoir simulation model is accomplished with HEC-ResSim and integrated with forecasts. Since EPS based hydrological model produce a large number of equal probable scenarios, it will indicate how uncertainty spreads in the future. Thus, it will provide risk ranges in terms of spillway discharges and reservoir level for operator when it is compared with deterministic approach. The framework is fully data driven, applicable, useful to the profession and the knowledge can be transferred to other similar reservoir systems.

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This paper studies the production and trade patterns that may arise between two different countries if plant location is introduced as a first step in the producers' decision making. A three-stage game is used: the first deals with location and the next two with capacity and final sales decisions. Demand and cost structures differ by country, and the latter contain specific elements related to the foreign operation. The structure of possible Nash-equilibria is examined and an analysis of the changes in the solution, if the countries engage in an integration process, is made. As in previous models, though global welfare gains may not be very high, single country ones may be considerable, due to changes in the location of the plants. However, even if full integration takes place, global Marshallian welfare may decrease. Conditions which determine a tendency towards multinationalisation are obtained. Assuming a move toward integration, conditions are also provided to characterize when exporting will be preferred to local production. The fact that producers may retain a certain discriminating power, notwithstanding the elimination of barriers to arbitrage, creates a tendency to locate production in the country where prices are higher. This explains why welfare gains may not be obvious. An empirical illustration, with real data from two MERCOSUL countries (Brazil and Argentina) illustrates the possible outcomes.

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This article highlights the problems associated with the existence of financiai institutions owned by a State which is a member of a federation. We show that these financiai institutions allow the States to transfer deficits to the federal government. This possibility creates incentives to higher deficits at State and federal leveis, implying an inefficiently high inflation rate. The main policy implication is that stabilization policies are more difficult to be implemented in countries such as Brazil, and Argentina which allow the members of the federation to own financiai institutions. A second policy implication is that Economic Blocks such as the European Community or Mercosur should not allow regional central banks if they create a monetary authority to help the members in financiai difficulty.

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One of the Main Subjects to Be Discussed, in Order to Adjust Latin American Economies to a Regional Integration Network, as Imposed By Mercosul or Other Economic Common Markets, is Related to the Employment and Other Labor Markets Public Policies. the Question to Be Posed Is: Having in Mind the Characteristics of Different Labor Markets and Labor Forces, What are the Impacts of Governmental Measures Presented in the Diverse Economic Conditions of Those Countries. Having in Mind These Impacts, This Paper Aims to Examine the Requisites to Adjust the Labor Structure Standards of Latin American Countries and What Would Be the Reforms to Be Performed By These Countries in Order to Prepare These Markets and Labor Forces to Adapt to Regional Integration Networks Represented By Mercosul, Alca or Other Common Markets. There are Evaluated the Impacts of the Globalization Process, Economic Stabilization and Reform Policies Undertaken By Some Selected Latin American Countries Since the Eighties on the Labor Structure Standards, Considering the Specific Adjustment Measures to Cope With the Negative Effects of These Policies. Next, Some Cases of Europe Union (Eu) Countries Measures to Prepare to Integration is Examined, in Order to Provide Some Elements to Better Understand the Possibilities to Handle With the Extensive Changes in External Conditions. in Sequence Some Statistical Indicatives of the Impacts of These Measures on the Occupational Structuring are Analyzed For a Group of Selected Latin American and Eu Countries.

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A América Latina tem uma longa história de tentativas de alcançar uma integração regional, embora seu sucesso tenha sido modesto. Este trabalho procura mostrar que isso essencialmente ocorre não tanto pelas práticas protecionistas nos vários países, mas devido à falta de uma moeda comum, ou, pelo menos, de uma taxa de câmbio rigorosamente administrada. Os autores analisaram o critério da área ótima de moeda que mostra ser prudente aumentar a integração econômica antes de tentar implementar a coordenação das taxas de câmbio. Entretanto, nós mostramos que no Mercosul já existem as condições mínimas para começar a trabalhar nessa direção. A diminuição da instabilidade cambial pode encorajar a entrada de investimentos e o comércio nas economias latino-americanas. Os autores também desenvolveram um exercício simplificado para entender como poderia ser viável alcançar estabilidade da taxa de câmbio em nos dois maiores países da região (Brasil e Argentina) e avançar na adoção de uma moeda comum.

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Apesar de o CMMI (Capability Maturity Model Integration) prover uma cobertura mais detalhada do ciclo de vida dos produtos que o uso isolado de outros processos de melhoria, ainda assim não pode ser visto como uma metodologia pronta para ser utilizada pelas organizações. Cada organização deve mapear as áreas de processo do nível CMMI desejado (caso a opção seja a representação por estágios, como veremos adiante) à sua metodologia, aos seus métodos e técnicas de desenvolvimento de produtos e sistemas, levando também em consideração os objetivos de negócio da organização. Tanto o CMMI como as demais normas e modelos de qualidade, dizem “o que” e não “como” fazer. Determinar este “como” é um trabalho adicional bastante grande que as organizações devem realizar quando da adoção destas normas. Para isto, normalmente as organizações buscam no mercado empresas de consultoria que possuem experiência na área. Essas consultorias são bastante indicadas porque aumentam significativamente a qualidade e a velocidade dos resultados. Este trabalho pretende facilitar as organizações interessadas na implementação de um modelo de qualidade, fornecendo descrições sobre alguns dos modelos de qualidade mais utilizados atualmente, bem como modelos de processos, guias e formulários que podem ser utilizados diretamente ou como uma base para a implementação do modelo desejado. Embora se aplique à implementação de qualquer modelo de qualidade, mais especificamente, este trabalho destina-se a auxiliar organizações que visem implementar o modelo CMMI nível 2 (doravante usaremos também a abreviação CMMI-N2). Para tanto, descreve de forma mais detalhada este modelo e fornece um caminho para a implementação do mesmo, incluindo a descrição de um processo mínimo de desenvolvimento de software, com base no RUP (Rational Unified Process) e o uso de um modelo de ciclo de vida de melhoria de processos, o IDEAL. Neste trabalho, propõe-se que seja utilizado o modelo IDEAL para a implementação do modelo de qualidade devido ao fato de este modelo ter sido concebido originalmente como um modelo de ciclo de vida para melhoria de processos de software com base no SW-CMM (Capability Maturity Model for Software). Associado a esse modelo, é sugerido que se utilize algumas técnicas e processos de gerência de projetos para cada área de processo do CMMI-N2, visando implantar cada área de processo através de um projeto. Para a implementação são propostos guias, modelos (formulários) de implementação e uma tabela que mapeia todas as áreas de processo do CMMI-N2, seus objetivos, práticas, produtos de trabalho e as ferramentas associadas.

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The work described in this thesis aims to support the distributed design of integrated systems and considers specifically the need for collaborative interaction among designers. Particular emphasis was given to issues which were only marginally considered in previous approaches, such as the abstraction of the distribution of design automation resources over the network, the possibility of both synchronous and asynchronous interaction among designers and the support for extensible design data models. Such issues demand a rather complex software infrastructure, as possible solutions must encompass a wide range of software modules: from user interfaces to middleware to databases. To build such structure, several engineering techniques were employed and some original solutions were devised. The core of the proposed solution is based in the joint application of two homonymic technologies: CAD Frameworks and object-oriented frameworks. The former concept was coined in the late 80's within the electronic design automation community and comprehends a layered software environment which aims to support CAD tool developers, CAD administrators/integrators and designers. The latter, developed during the last decade by the software engineering community, is a software architecture model to build extensible and reusable object-oriented software subsystems. In this work, we proposed to create an object-oriented framework which includes extensible sets of design data primitives and design tool building blocks. Such object-oriented framework is included within a CAD Framework, where it plays important roles on typical CAD Framework services such as design data representation and management, versioning, user interfaces, design management and tool integration. The implemented CAD Framework - named Cave2 - followed the classical layered architecture presented by Barnes, Harrison, Newton and Spickelmier, but the possibilities granted by the use of the object-oriented framework foundations allowed a series of improvements which were not available in previous approaches: - object-oriented frameworks are extensible by design, thus this should be also true regarding the implemented sets of design data primitives and design tool building blocks. This means that both the design representation model and the software modules dealing with it can be upgraded or adapted to a particular design methodology, and that such extensions and adaptations will still inherit the architectural and functional aspects implemented in the object-oriented framework foundation; - the design semantics and the design visualization are both part of the object-oriented framework, but in clearly separated models. This allows for different visualization strategies for a given design data set, which gives collaborating parties the flexibility to choose individual visualization settings; - the control of the consistency between semantics and visualization - a particularly important issue in a design environment with multiple views of a single design - is also included in the foundations of the object-oriented framework. Such mechanism is generic enough to be also used by further extensions of the design data model, as it is based on the inversion of control between view and semantics. The view receives the user input and propagates such event to the semantic model, which evaluates if a state change is possible. If positive, it triggers the change of state of both semantics and view. Our approach took advantage of such inversion of control and included an layer between semantics and view to take into account the possibility of multi-view consistency; - to optimize the consistency control mechanism between views and semantics, we propose an event-based approach that captures each discrete interaction of a designer with his/her respective design views. The information about each interaction is encapsulated inside an event object, which may be propagated to the design semantics - and thus to other possible views - according to the consistency policy which is being used. Furthermore, the use of event pools allows for a late synchronization between view and semantics in case of unavailability of a network connection between them; - the use of proxy objects raised significantly the abstraction of the integration of design automation resources, as either remote or local tools and services are accessed through method calls in a local object. The connection to remote tools and services using a look-up protocol also abstracted completely the network location of such resources, allowing for resource addition and removal during runtime; - the implemented CAD Framework is completely based on Java technology, so it relies on the Java Virtual Machine as the layer which grants the independence between the CAD Framework and the operating system. All such improvements contributed to a higher abstraction on the distribution of design automation resources and also introduced a new paradigm for the remote interaction between designers. The resulting CAD Framework is able to support fine-grained collaboration based on events, so every single design update performed by a designer can be propagated to the rest of the design team regardless of their location in the distributed environment. This can increase the group awareness and allow a richer transfer of experiences among them, improving significantly the collaboration potential when compared to previously proposed file-based or record-based approaches. Three different case studies were conducted to validate the proposed approach, each one focusing one a subset of the contributions of this thesis. The first one uses the proxy-based resource distribution architecture to implement a prototyping platform using reconfigurable hardware modules. The second one extends the foundations of the implemented object-oriented framework to support interface-based design. Such extensions - design representation primitives and tool blocks - are used to implement a design entry tool named IBlaDe, which allows the collaborative creation of functional and structural models of integrated systems. The third case study regards the possibility of integration of multimedia metadata to the design data model. Such possibility is explored in the frame of an online educational and training platform.

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Mercados são instituições criadas para facilitar uma atividade de comercialização. Isto é possível porque um mercado é constituído por instituições que foram desenhadas para reduzir os custos de transação associados a este processo de troca. A partir dessas duas ideias, esta tese possui três objetivos principais. (i) Analisar por que a literatura de análise de cointegração tem mensurado estes custos de forma imprecisa. A principal razão é certa confusão entre os conceitos de custos de transação, de transporte e de comercialização. (ii) Propor um procedimento para mensurar indiretamente os custos de transação de mercado variáveis combinando os modelos de cointegração com mudança de regime e a estrutura teórica oferecidas pela Nova Economia Institucional. Este procedimento é aplicado para quantificar quanto custa comercializar etanol no mercado internacional usando suas atuais instituições. (iii) Por fim, usando os mesmos modelos e a mesma estrutura teórica, esta dissertação contesta a hipótese de que já existe um mercado internacional de etanol bem desenvolvido, tal qual a literatura tem assumido. De forma semelhante, também é avaliada a hipótese de que a remoção das barreiras comerciais norte-americanas para o etanol brasileiro seria uma condição suficiente para o desenvolvimento deste mercado internacional. Os testes aplicados rejeitam ambas as hipóteses.

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Este trabalho busca contribuir para o desenvolvimento de teorias que lidem com as particularidades dos processos de expansão internacional das empresas de serviços profissionais. Para isto, foi realizado um estudo de caso da Integration, uma empresa de consultoria brasileira que vem apresentando uma trajetória de internacionalização que a destaca não só no contexto brasileiro como internacional. A atividade de consultoria em gestão foi escolhida por ser uma das poucas a guardar simultaneamente e de forma tão clara todas as características das empresas de serviços profissionais descritas na literatura, além de representar a maior pacela do comércio internacional de serviços profissionais em diferentes países. A partir da revisão da teoria e de um primeiro mapeamento do caso Integration, foram identificadas as principais oportunidades de desenvolvimento da teoria e então desenhado o protocolo de pesquisa que norteou o levantamento de campo. O roteiro de pesquisa foi estruturado a partir de trinta e seis proposições iniciais, organizadas segundo a estrutura conceitual do paradigma eclético OLI (Ownership, Location, Internalization), observando-se as principais características das empresas de serviços profissionais e as implicações destas características em seu processo de internacionalização. A pesquisa de campo ocorreu entre novembro de 2010 e outubro de 2012 e incluiu visitas às diferentes operações internacionais da empresa, onde foram realizadas entrevistas com diretores, consultores e clientes de cada uma delas. O levantamento empírico gerou um extenso material que passou por processos de edição e categorização até que tivessem a consistência necessária para sustentar cada uma das vinte e duas proposições apresentadas no final deste estudo. Por meio destas proposições, acredita-se que esta tese ofereça relevantes contribuições para o desenvolvimento do conhecimento teórico e empírico acerca do processo de internacionalização das empresas de serviços profissionais e para o desenvolvimento de uma agenda de pesquisa relacionada ao tema.