261 research outputs found

    Wind for Schools: Fostering the Human Talent Supply Chain for a 20% Wind Energy Future

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    As the United States dramatically expands wind energy deployment, the industry is challenged with developing a skilled workforce and addressing public resistance. Wind Powering America’s Wind for Schools project addresses these issues by:• Developing Wind Application Centers (WACs) at universities; WAC students assist in implementing school wind turbines and participate in wind courses• Installing small wind turbines at community “host” schools• Implementing teacher training with interactive curricula at each host school

    Mathematical modelling of insect oviposition behaviour

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    This thesis is concerned with various aspects of insect oviposition behaviour. In the first chapter published mathematical models developed to understand optimal insect oviposition behaviour are reviewed. In these models it is assumed that selection favours females that maximize their offspring's total reproductive success. In the second chapter a different approach to the optimization problem is presented. It is shown that the quantity that is maximized in the models that were discussed in the review is not well defined. It is suggested that instead the total expected resource gain that can be acquired by a female's offspring should be used as a fitness measure. The main reason for this is that if fitness is defined as the ability to pass genes on to all future generations, maximizing the fitness measure used in the existing models would not completely resolve the recursive nature of this definition. The third chapter investigates the effects of density-dependent fecundity on population size. It is assumed that females lay only one single clutch and that the size of the clutch is directly related to the female's fecundity. An iterative model is derived to calculate variation in population size. An analysis of the model and subsequent simulation predict that low levels of competition among larvae is likely to cause chaotic behaviour and overpopulation of the environment whereas high competition is likely to have a. stabilizing effect on population size. A fourth chapter briefly summarizes an experiment conducted on Pieris brassi-cae to measure variation in egg size and to estimate larval surviral rates

    SemNet: the knowledge representation of lolita

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    Many systems of Knowledge Representation exist, but none were designed specifically for general purpose large scale natural language processing. This thesis introduces a set of metrics to evaluate the suitability of representations for this purpose, derived from an analysis of the problems such processing introduces. These metrics address three broad categories of question: Is the representation sufficiently expressive to perform its task? What implications has its design on the architecture of the system using it? What inefficiencies are intrinsic to its design? An evaluation of existing Knowledge Representation systems reveals that none of them satisfies the needs of general purpose large scale natural language processing. To remedy this lack, this thesis develops a new representation: SemNet. SemNet benefits not only from the detailed requirements analysis but also from insights gained from its use as the core representation of the large scale general purpose system LOLITA (Large-scale Object-based Linguistic Interactor, Translator, and Analyser). The mapping process between Natural language and representation is presented in detail, showing that the representation achieves its goals in practice

    Wind Energy Workforce Development: A Roadmap to a Sustainable Wind Industry

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    As the United States moves toward greatly expanded wind energy use, the need for skilled workers at all industry levels has been repeatedly identified as a critical issue. Additionally, if the industry and nation wish to capitalize on this rapid industry growth by becoming a major international green technology exporter, reversing current educational trends away from science, engineering, and technical skills must be achieved. This poster provides an overview of the educational infrastructure and expected industry needs through a discussion of the activities to train workers while addressing issues for each of the education sectors, leading to the development of an educational infrastructure to support wind technology

    Onward, Christian Soldiers

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    Wind Powering America's Wind for Schools Project: Summary Report

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    This report provides an overview of the U.S. Department of Energy, Wind Powering America, Wind for Schools project. It outlines teacher-training activities and curriculum development; discusses the affiliate program that allows school districts and states to replicate the program; and contains reports that provide an update on activities and progress in the 11 states in which the Wind for Schools project operates
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