9,642 research outputs found

    Shuttle Ground Operations Efficiencies/Technologies (SGOE/T) study. Volume 2: Ground Operations evaluation

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    The Ground Operations Evaluation describes the breath and depth of the various study elements selected as a result of an operational analysis conducted during the early part of the study. Analysis techniques used for the evaluation are described in detail. Elements selected for further evaluation are identified; the results of the analysis documented; and a follow-on course of action recommended. The background and rationale for developing recommendations for the current Shuttle or for future programs is presented

    Supporting Knitwear Design Using Case-Based Reasoning

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    Organised by: Cranfield UniversityKnitwear design is a creative activity that is hard to automate using the computer. The production of the associated knitting pattern, however, is repetitive, time-consuming and error-prone, calling for automation. Our objectives are two-fold: to facilitate the design and to ease the burden of calculations and checks in pattern production. We conduct a feasibility study for applying case-based reasoning in knitwear design: we describe appropriate methods and show how they can be implemented.Mori Seiki – The Machine Tool Compan

    A Goal and Ontology Based Approach for Generating ETL Process Specifications

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    Data warehouse (DW) systems development involves several tasks such as defining requirements, designing DW schemas, and specifying data transformation operations. Indeed, the success of DW systems is very much dependent on the proper design of the extracting, transforming, and loading (ETL) processes. However, the common design-related problems in the ETL processes such as defining user requirements and data transformation specifications are far from being resolved. These problems are due to data heterogeneity in data sources, ambiguity of user requirements, and the complexity of data transformation activities. Current approaches have limitations on the reconciliation of DW requirement semantics towards designing the ETL processes. As a result, this has prolonged the process of the ETL processes specifications generation. The semantic framework of DW systems established from this study is used to develop the requirement analysis method for designing the ETL processes (RAMEPs) from the different perspectives of organization, decision-maker, and developer by using goal and ontology approaches. The correctness of RAMEPs approach was validated by using modified and newly developed compliant tools. The RAMEPs was evaluated in three real case studies, i.e., Student Affairs System, Gas Utility System, and Graduate Entrepreneur System. These case studies were used to illustrate how the RAMEPs approach can be implemented for designing and generating the ETL processes specifications. Moreover, the RAMEPs approach was reviewed by the DW experts for assessing the strengths and weaknesses of this method, and the new approach is accepted. The RAMEPs method proves that the ETL processes specifications can be derived from the early phases of DW systems development by using the goal-ontology approach

    Overcoming inertia: insights from evolutionary economics into improved energy and climate policy

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    The mainstream view in economics has been a key factor in designing climate policies. Given that the controversy over the “efficiency paradox” has shown that mainstream economics is not neutral in the way it deals with climate change, the purpose of this paper is to investigate what insights could come out of analysing this crucial issue through an alternative economic framework. The choice of an evolutionary line of thought is then quite straightforward. It stems from both its departure from the perfect rationality hypothesis and its shift of focus towards a better understanding of innovation, system change and economic dynamics. All together this renders evolutionary economics a suitable complementary framework for designing climate policies and for managing the needed transition towards a low carbon economy. Most notably, the evolutionary framework allows us to depict the presence of two sources of inertia (i.e at the levels of individuals through “habits” and at the level of socio-technical systems) that mutually reinforce each other in a path-dependent manner. Accordingly, decision-makers should design measures (e.g. commitment strategies, niche management, etc.) that specifically target those change-resisting factors as they tend to reduce the efficiency of traditional instruments.Climate change ; energy consumption ; evolutionary economics ; habits; technological lock in ; transitions ;
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