41 research outputs found

    S-cubed-a spacecraft and experiment description

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    The launch of the Explorer 45 satellite and the instruments installed in the satellite are discussed. The scientific objectives of the first mission, the orbital parameters, and the capabilities of the data system are examined. The satellite is designed to carry out investigations of specific magnetospheric phenomena in the heart of the magnetosphere. The data handling system is programmable from the ground for greater flexibility

    Design Considerations for the Small Scientific Satellite (S3 )

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    The Small Scientific Satellite (S) program has been established to provide a highly sophisticated Scout class system for individual experimenters or small groups of experimenters to conduct specialized studies of specific phenomena in the magnetosphere or near Interplanetary space. The spacecraft system is designed, to be as flexible as possible to accommodate a wide variety of scientific missions to be flown in, the next decade. This paper describes the methods used to obtain design guidelines through extensive Interviews with potential, users and the resultant design concepts

    No Room for Dissent: China\u27s Laws Against Disturbing Social Order Undermine Its Commitments to Free Speech and Hamper the Rule of Law

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    The term “disturbing social order” appears in several Chinese civil and criminal laws. The vagueness of these three words, combined with the national culture of censorship, undermines various legal provisions that guarantee freedom of speech in China. As a result, laws against disturbing social order suppress nonviolent political speech in this rising world power. This became clear during the 2008 Summer Olympics in Beijing, where both individual protestors and corps of journalists found their work frustrated by laws against disturbing social order. Chinese lawmakers could remedy this conflict of laws by clarifying the term “disturbing social order,” and by creating outlets for nonviolent dissent that are protected by procedural safeguards. Such measures would help reinvest the Chinese people’s faith in their government and grant the country increased political legitimacy in the international community. While such action would represent a departure from centuries of censorship in the country, it is crucial to China’s continued political and economic success

    Assessing Nature-Based Recreation to Support Economic Development and Environmental Sustainability Extension Programs

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    In support of community development, natural resource, and other Extension programs, the research reported here aimed to identify current and potential outdoor recreational opportunities in the St. Johns River Basin, an inland area in northeastern Florida. We identify the characteristics of the visitors participating in the recreational activities and discuss opportunities to enhance tourism experiences. Similar research can be implemented in other U.S. regions to document the benefits provided by water resources to local and regional economies

    Vetting Online Resources that Support Teachers' Promotion of Mathematical Habits of Mind

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    In this report, four secondary school mathematics teachers and one university mathematics teacher educator present an instrument designed to evaluate the usefulness and relevance of online resources at helping teachers develop practical conceptions of mathematical habits of mind as described by the Common Core’s Standards for Mathematical Practice. Descriptions for how the instrument was developed, its components parts, and an example of its use are provided in detail

    Plague and Climate: Scales Matter

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    Plague is enzootic in wildlife populations of small mammals in central and eastern Asia, Africa, South and North America, and has been recognized recently as a reemerging threat to humans. Its causative agent Yersinia pestis relies on wild rodent hosts and flea vectors for its maintenance in nature. Climate influences all three components (i.e., bacteria, vectors, and hosts) of the plague system and is a likely factor to explain some of plague's variability from small and regional to large scales. Here, we review effects of climate variables on plague hosts and vectors from individual or population scales to studies on the whole plague system at a large scale. Upscaled versions of small-scale processes are often invoked to explain plague variability in time and space at larger scales, presumably because similar scale-independent mechanisms underlie these relationships. This linearity assumption is discussed in the light of recent research that suggests some of its limitations

    A Tale of Two Pities: Revisited

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    Jeffrey Mine Fans Loaded on a Truck

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    Mine ventilation fans, built by the Jeffrey Manufacturing Company, Columbus, Ohio, are loaded on a truck in the Jeffrey Company yard. They were shipped to the Arrow Coal Company and the Gauley Mountain Coal Company (locations unknown). This picture was taken on August 18, 1919
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