51 resultados para Eutrophication. Ecological modeling. Eutrophication model. Top-down control


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The present thesis examines Palestinian-Israeli peace initiatives as politically negotiated texts and their different Arabic, English and Hebrew language versions. Its aim is to make a contribution to a deeper understanding of the role of translation and recontextualization of politically negotiated texts in situations of ongoing contemporary conflict. In modern Translation Studies, although research exists on the translation of political texts following functional (e.g. Schäffner 2002) or systemic-linguistic (e.g. Calzada-Pérez 2001) approaches or applying narrative theory (Baker 2006), peace initiatives and politically negotiated texts are still a largely under-researched genre of political texts. The thesis â which takes 31 Arabic, English and Hebrew language versions of 5 different Palestinian-Israeli peace initiatives as its corpus â operates within the framework of product-oriented Descriptive Translation Studies (Lambert and Van Gorp 1985) and Critical Discourse Analysis (Fairclough 1992). For all of the peace initiatives analysed, there exist several language versions which were made available in different contexts by different institutions and for different readerships and purposes. The thesis pursues a top-down approach. It begins with presenting the socio-cultural and political contexts of the production of the original versions of the respective peace initiatives (the source texts) and their different language versions (target texts), focusing on their underlying functions and principles of audience design. It then moves to examine how the textual profiles of the language versions of peace initiatives reflect aspects of ideology, political affiliation and power relations at both the macro- and micro-structural levels. The final step is to account for these aspects in terms of socio-political and institutional conditions of the production of the translations. The overall textual analysis demonstrates that when translated, peace initiatives can be interpreted differently by different institutions in their attempt to promote their respective political interests and narratives. Also, it is very frequently that translations produced in one specific institutional context are recontextualised for use in another one. Such recontextualisation goes hand in hand with further textual amendments. To summarize, the thesis demonstrates how these translations â as products â are (re)framed and (re)contextualized in different institutional settings in order to serve different purposes. These texts, thus, play different roles in situations of ongoing contemporary conflict depending on the institutional context in which they are presented and the purposes they set to serve. These main findings make an original contribution to the discipline of Translation Studies in respect of emphasizing the need to study translations in their socio-political, historical and institutional contexts.

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This paper investigates three case studies with regards their outsourcing initiatives from an Irish perspective, the benefits and problems they encountered, the contracts they have constructed, and where they have outsourced and the reasons behind them. The research took place over a period of two years, and the information for the case studies was gleaned from a number of sources including: published papers about the companies, the company websites, annual financial reports, the questionnaire they filled out, and interviews with key decision making personnel in the company. Follow up interviews were conducted where it was felt they were required. Key findings were that: it is very important to have the outsourcing initiative driven from the top down, and it is imperative to construct a contract that promotes a relationship based on mutual trust and respect, the use of Ireland for outsourcing, and the benefits and problem companies have experienced.

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In this paper, we study the management and control of service differentiation and guarantee based on enhanced distributed function coordination (EDCF) in IEEE 802.11e wireless LANs. Backoff-based priority schemes are the major mechanism for Quality of Service (QoS) provisioning in EDCF. However, control and management of the backoff-based priority scheme are still challenging problems. We have analysed the impacts of backoff and Inter-frame Space (IFS) parameters of EDCF on saturation throughput and service differentiation. A centralised QoS management and control scheme is proposed. The configuration of backoff parameters and admission control are studied in the management scheme. The special role of access point (AP) and the impact of traffic load are also considered in the scheme. The backoff parameters are adaptively re-configured to increase the levels of bandwidth guarantee and fairness on sharing bandwidth. The proposed management scheme is evaluated by OPNET. Simulation results show the effectiveness of the analytical model based admission control scheme. ©2005 IEEE.

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The human and material cost of type 2 diabetes is a cause of increasing concern for health professionals, representative organisations and governments worldwide. The scale of morbidity and mortality has led the United Nations to issue a resolution on diabetes, calling for national policies for prevention, treatment and care. There is clearly an urgent need for a concerted response from all interested parties at the community, national and international level to work towards the goals of the resolution and create effective, sustainable treatment models, care systems and prevention strategies. Action requires both a 'bottom-up' approach of public awareness campaigns and pressure from healthcare professionals, coupled with a 'top-down' drive for change, via partnerships with governments, third sector (non-governmental) organisations and other institutions. In this review, we examine how existing collaborative initiatives serve as examples for those seeking to implement change in health policy and practice in the quest to alleviate the health and economic burden of diabetes. Efforts are underway to provide continuous and comprehensive care models for those who already have type 2 diabetes; in some cases, national plans extend to prevention strategies in attempts to improve overall public health. In the spirit of partnership, collaborations with governments that incorporate sustainability, long-term goals and a holistic approach continue to be a driving force for change. It is now critical to maintain this momentum and use the growing body of compelling evidence to educate, inform and deliver a long-term, lasting impact on patient and public health worldwide. © 2007 The Authors.

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This article investigates the relationship between zoning by-laws, as put forward in governmental land-use plans and the viability of urban residential neighbourhood economies. The Dutch planning tradition has long been characterized by strict separation of functions and top-down planning. We argue that profound changes in social and economic structures make land-use planning practices less suitable for the current policy formula of "mixed urban milieus". Although the residential neighbourhood might not be the location of large firms, it definitely attracts small ones, and facilitates starting businesses whose presence (and potential growth) can be beneficial to the city as a whole. We present a typology of spatial patterns of neighbourhood economies based on land-use plans and describe whether these are related to the distinctive economic development of the neighbourhood over the period 1999-2007. © 2013 Taylor & Francis.

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Category hierarchy is an abstraction mechanism for efficiently managing large-scale resources. In an open environment, a category hierarchy will inevitably become inappropriate for managing resources that constantly change with unpredictable pattern. An inappropriate category hierarchy will mislead the management of resources. The increasing dynamicity and scale of online resources increase the requirement of automatically maintaining category hierarchy. Previous studies about category hierarchy mainly focus on either the generation of category hierarchy or the classification of resources under a pre-defined category hierarchy. The automatic maintenance of category hierarchy has been neglected. Making abstraction among categories and measuring the similarity between categories are two basic behaviours to generate a category hierarchy. Humans are good at making abstraction but limited in ability to calculate the similarities between large-scale resources. Computing models are good at calculating the similarities between large-scale resources but limited in ability to make abstraction. To take both advantages of human view and computing ability, this paper proposes a two-phase approach to automatically maintaining category hierarchy within two scales by detecting the internal pattern change of categories. The global phase clusters resources to generate a reference category hierarchy and gets similarity between categories to detect inappropriate categories in the initial category hierarchy. The accuracy of the clustering approaches in generating category hierarchy determines the rationality of the global maintenance. The local phase detects topical changes and then adjusts inappropriate categories with three local operations. The global phase can quickly target inappropriate categories top-down and carry out cross-branch adjustment, which can also accelerate the local-phase adjustments. The local phase detects and adjusts the local-range inappropriate categories that are not adjusted in the global phase. By incorporating the two complementary phase adjustments, the approach can significantly improve the topical cohesion and accuracy of category hierarchy. A new measure is proposed for evaluating category hierarchy considering not only the balance of the hierarchical structure but also the accuracy of classification. Experiments show that the proposed approach is feasible and effective to adjust inappropriate category hierarchy. The proposed approach can be used to maintain the category hierarchy for managing various resources in dynamic application environment. It also provides an approach to specialize the current online category hierarchy to organize resources with more specific categories.