3,800 research outputs found

    Software engineering and Ada (Trademark) training: An implementation model for NASA

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    The choice of Ada for software engineering for projects such as the Space Station has resulted in government and industrial groups considering training programs that help workers become familiar with both a software culture and the intricacies of a new computer language. The questions of how much time it takes to learn software engineering with Ada, how much an organization should invest in such training, and how the training should be structured are considered. Software engineering is an emerging, dynamic discipline. It is defined by the author as the establishment and application of sound engineering environments, tools, methods, models, principles, and concepts combined with appropriate standards, guidelines, and practices to support computing which is correct, modifiable, reliable and safe, efficient, and understandable throughout the life cycle of the application. Neither the training programs needed, nor the content of such programs, have been well established. This study addresses the requirements for training for NASA personnel and recommends an implementation plan. A curriculum and a means of delivery are recommended. It is further suggested that a knowledgeable programmer may be able to learn Ada in 5 days, but that it takes 6 to 9 months to evolve into a software engineer who uses the language correctly and effectively. The curriculum and implementation plan can be adapted for each NASA Center according to the needs dictated by each project

    GUARDIANS final report

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    Emergencies in industrial warehouses are a major concern for firefghters. The large dimensions together with the development of dense smoke that drastically reduces visibility, represent major challenges. The Guardians robot swarm is designed to assist fire fighters in searching a large warehouse. In this report we discuss the technology developed for a swarm of robots searching and assisting fire fighters. We explain the swarming algorithms which provide the functionality by which the robots react to and follow humans while no communication is required. Next we discuss the wireless communication system, which is a so-called mobile ad-hoc network. The communication network provides also one of the means to locate the robots and humans. Thus the robot swarm is able to locate itself and provide guidance information to the humans. Together with the re ghters we explored how the robot swarm should feed information back to the human fire fighter. We have designed and experimented with interfaces for presenting swarm based information to human beings

    Exhibiting Berthe Morisot after the Advent of Feminist Art History

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    Feminist art historians reassessed French Impressionist Berthe Morisot (1841-1895) throughout the late twentieth and early twenty-first century, a period in which her work coincidentally received steady exposure in major museum exhibitions. This thesis examines how the feminist art historical project intersects with exhibitions that give prominence to Morisot’s work. Critical reviews by Morisot scholars argue that more frequent display of the artist’s work has not correlated to nuanced interpretation. Moreover, prominent feminist scholars and museum theorists maintain that curators virtually exclude their contributions. Attending to these recurrent concerns, this thesis charts shifts in emphases and inquiry in writing centered on Morisot to survey the extent to which curators convey new constructions of her artistic, social, and historical identities. This analysis will observe how distinct exhibition forms—the retrospective, the Impressionism blockbuster, and the gendered “women Impressionists” show—may frame Morisot’s work differently according to their organizing principles

    Operation of Multiple Reservoir Systems: A Case Study of the Upper Vistula System (An Introduction)

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    Water resource systems have been an important part of resources and environment related research at IIASA since its inception. As demands for water increase relative to supply, the intensity and efficiency of water resources management must be developed further. This in turn requires an increase in the degree of detail and sophistication of the analysis, including economic, social and environmental evaluation of water resources development alternatives aided by application of mathematical modeling techniques, to generate inputs for planning, design, and operational decisions. During the year of 1978 it was decided that parallel to the continuation of demand studies, an attempt would be made to integrate the results of our studies on water demands with water supply considerations. This new task was named "Regional Water Management" (Task 1, Resources and Environment Area). This paper is concerned with operational decision-making in the existing multiple reservoir systems. Following a short description of the case system, three different approaches to optimization of the system's operation are presented. First, the three-step stochastic implicit approach; second, the simulation approach; and third, the approach based on the concepts of hierarchical control systems. Distinction is made between the long-term reservoir operation rules and the short-term operational decisions using the real-time forecasts of reservoir inflows and water demands. The paper is part of a collaborative study on the operation of the Upper Vistula multiple reservoir system in Poland, carried out by the Institute for Meteorology and Water Management, Warsaw, Poland and IIASA

    ILCA Bulletin No. 20

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    Oceanus.

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    v. 26, no. 4 (1983

    ILCA Bulletin No. 20

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