7,909 research outputs found

    Global shallow water magnetohydrodynamic waves in the solar tachocline

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    We derive analytical solutions and dispersion relations of global magnetic Poincar\'e (magneto-gravity) and magnetic Rossby waves in the approximation of shallow water magnetohydrodynamics. The solutions are obtained in a rotating spherical coordinate system for strongly and weakly stable stratification separately in the presence of toroidal magnetic field. In both cases magnetic Rossby waves split into fast and slow magnetic Rossby modes. In the case of strongly stable stratification (valid in the radiative part of the tachocline) all waves are slightly affected by the layer thickness and the toroidal magnetic field, while in the case of weakly stable stratification (valid in the upper overshoot layer of the tachocline) magnetic Poincar\'e and fast magnetic Rossby waves are found to be concentrated near the solar equator, leading to equatorially trapped waves. However, slow magnetic Rossby waves tend to concentrate near the poles, leading to polar trapped waves. The frequencies of all waves are smaller in the upper weakly stable stratification region than in the lower strongly stable stratification one

    Operational and research aspects of a radio-controlled model flight test program

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    The operational and research aspects of a subscale, radio-controlled model flight test program are presented. By using low-cost free-flying models, an approach was developed for obtaining research-quality vehicle performance and aerodynamic information. The advantages and limitations learned by applying this approach to a specific flight test program are described. The research quality of the data acquired shows that model flight testing is practical for obtaining consistent and repeatable flight data

    Calling the United States\u27 Bluff: How Sovereign Immunity Undermines the United States\u27 Claim to an Effective Domestic Human Rights System

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    This article challenges the claims made by the United States that the civil rights system in this country adequately protects human rights, making it unnecessary for the United States to take on additional international human rights commitments. Specifically, the article uses international human rights law and comparative law to analyze the broad sovereign immunity doctrines that protect government actors in the United States from suits for damages even where constitutional violations are in play

    Jews and Science

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    Jews and Science examines the complicated relationship between Jewish identities and the evolving meanings of science throughout the history of Western academic culture. Jews have been not only the agents for study of things Jewish, but also the subject of examination by “scientists” across a range of disciplines, from biology and bioethics to anthropology and genetics. Even the most recent iteration of Jewish studies as an academic discipline—Israel studies—stresses the global cultural, economic, and social impact of Israeli science and medicine. The 2022 volume of the Casden Institute’s Jewish Role in American Life series tackles a range of issues that have evolved with the rise of Jewish studies, throughout its evolution from interdisciplinary to transdisciplinary, and now finally as a discipline itself with its own degrees and departments in universities across the world. This book gathers contributions by scholars from various disciplines to discuss the complexity in defining “science” across multiple fields within Jewish studies. The scholars examine the role of the self-defined “Jewish” scholar, discerning if their identification with the object of study (whether that study be economics, criminology, medicine, or another field entirely) changes their perception or status as scientists. They interrogate whether the myriad ways to study Jews and their relationship to science—including the role of Jews in science and scientific training, the science of the Jews (however defined), and Jews as objects of scientific study—alter our understanding of science itself. The contributors of Jews and Science take on the challenge to confront these central problems.https://docs.lib.purdue.edu/casden/1013/thumbnail.jp

    New Illnesses—Old Problems, Old Illnesses—New Problems

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    This present collection of essays concerns the representation of illness in literature
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