15,033 research outputs found

    What Is Judicial Ideology, and How Should We Measure It?

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    Part I of this Article explores the theoretical problem that scholars use the term “judicial ideology” in the absence of any widespread agreement or clear understanding as to what the term means in the first place. It is difficult for scholars to devise appropriate and broadly acceptable measures of judicial ideology when they and their readers have different concepts—or perhaps no coherent concept at all—of “judicial ideology” in mind. As a result, bona fide intellectual disagreement over the nature of judicial behavior is too easily compounded by outright misunderstanding. Part II discusses three of the most significant and common practical obstacles to the measurement of judicial ideology. First, ideology is not a tangible phenomenon that can be directly observed. Second, judicial behavior is often open to multiple interpretations. Third, judicial ideology may be a multidimensional phenomenon, such that a judge who is liberal in one context may be moderate or conservative in another, or the labels “liberal,” “moderate,” and “conservative” may not seem applicable at all. Parts III and IV of this Article aim to address an important practical need of judicial behavior scholars. There are several ways in which one can measure judicial ideology, but little has been written about how researchers should go about choosing among these methods. Competing considerations of accuracy, convenience, and ease of interpretation make it difficult to know what measurementapproach is most appropriate to the task at hand. In Part III, the relative merits of three popular approaches are identified and discussed: the use of proxy measures, the assessment of judicial ideology based on the actual behavior of the judges in a particular context, and the transplantation of ideology measures developed in one context into other contexts involving partly or wholly different data. Finally, in Part IV, the real-world performance of different measurement approaches are compared, using data drawn from the federal courts of appeals and the Supreme Court

    Moon Trek: An Interactive Web Portal for Current and Future Lunar Missions

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    NASA's Moon Trek (https://moontrek.jpl.nasa.gov) is the successor to and replacement for NASA's Lunar Mapping and Modeling Portal (LMMP). Released in 2017, Moon Trek features a new interface with improved ways to access, visualize, and analyze data. Moon Trek provides a web-based Portal and a suite of interactive visualization and analysis tools to enable mission planners, lunar scientists, and engineers to access mapped lunar data products from past and current lunar missions

    STEM Engagement with NASA's Solar System Treks Portals for Lunar and Planetary Mapping and Modeling

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    This presentation will provide an overview of the uses and capabilities of NASA's Solar System Treks family of online mapping and modeling portals. While also designed to support mission planning and scientific research, this presentation will focus on the Science, Technology, Engineering, and Math (STEM) engagement and public outreach capabilities of these web based suites of data visualization and analysis tools

    Dynamic and Energetic Stabilization of Persistent Currents in Bose-Einstein Condensates

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    We study conditions under which vortices in a highly oblate harmonically trapped Bose-Einstein condensate (BEC) can be stabilized due to pinning by a blue-detuned Gaussian laser beam, with particular emphasis on the potentially destabilizing effects of laser beam positioning within the BEC. Our approach involves theoretical and numerical exploration of dynamically and energetically stable pinning of vortices with winding number up to S=6S=6, in correspondence with experimental observations. Stable pinning is quantified theoretically via Bogoliubov-de Gennes excitation spectrum computations and confirmed via direct numerical simulations for a range of conditions similar to those of experimental observations. The theoretical and numerical results indicate that the pinned winding number, or equivalently the winding number of the superfluid current about the laser beam, decays as a laser beam of fixed intensity moves away from the BEC center. Our theoretical analysis helps explain previous experimental observations, and helps define limits of stable vortex pinning for future experiments involving vortex manipulation by laser beams.Comment: 8 pages 5 figure

    Averaging of Nonlinearity Management with Dissipation

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    Motivated by recent experiments in optics and atomic physics, we derive an averaged nonlinear partial differential equation describing the dynamics of the complex field in a nonlinear Schroedinger model in the presence of a periodic nonlinearity and a periodically-varying dissipation coefficient. The incorporation of dissipation is motivated by experimental considerations. We test the numerical behavior of the derived averaged equation by comparing it to the original nonautonomous model in a prototypical case scenario and observe good agreement between the two

    Electromagnetic Leptogenesis

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    We present a new leptogenesis scenario, where the lepton asymmetry is generated by CP violating decays of heavy electroweak singlet neutrinos via electromagnetic dipole moment couplings to the ordinary light neutrinos. Akin to the usual scenario where the decays are mediated through Yukawa interactions, we have shown, by explicit calculations, that the desired asymmetry can be produced through the interference of the corresponding tree-level and one-loop decay amplitudes involving the effective dipole moment operators. We also find that the relationship of the leptogenesis scale to the light neutrino masses is similar to that for the standard Yukawa-mediated mechanism.Comment: 6 pages, 6 figures; v2: some references added, minor change to discussion, accepted by PR

    Human apolipoprotein C-II: complete nucleic acid sequence of preapolipoprotein C-II.

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    Descriptive Analysis of Assaults in Domestic Violence Incidents Reported to Alaska State Troopers: 2004

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    This project examined the characteristics of assaults in domestic violence incidents reported to the Alaska State Troopers. Assaults are only one type of criminal offense defined in Alaska statutes as a crime involving domestic violence. This report is not inclusive of all crimes involving domestic violence reported to AST, because it only includes assaults. In addition, this report is not inclusive of assaults in domestic violence incidents that were reported to municipal police departments across Alaska. Only assaults in domestic violence incidents reported to AST are described in this report. The term assault will be used throughout this report to define assault cases that are crimes involving domestic violence incidents; this includes felony and misdemeanor assaults. The sample utilized for this analysis included all assaults in domestic violence incidents reported to AST in 2004. It included information from 1,281 reports on 1,803 assault charges, 1,356 suspects, 1,523 victims, and 1,283 witnesses. This descriptive analysis documents the characteristics of these reports, charges, suspects, victims, witnesses, and legal resolutions.Index of Tables and Figures / Acknowledgements / Executive Summary / Descriptive Analysis of Assaults in Domestic Violence Incidents / Brief Overview of the State of Alaska / Brief Overview of the Alaska State Troopers / Summary of Alaska's Criminal Assault Statutes / Purpose of this Study / Methods / Report Characteristics / Suspect Characteristics / Victim Characteristics / Incident Characteristics / Witness Characteristics / Legal Resolutions / Appendix A -- Data Collection Instruments / Appendix B -- 2004 Alaska's Criminal Assault Statute

    The golden circle: A way of arguing and acting about technology in the London ambulance service

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    This paper analyses the way in which the London Ambulance Service recovered from the events of October 1992, when it implemented a computer-aided despatch system (LASCAD) that remained in service for less than two weeks. It examines the enactment of a programme of long-term organizational change, focusing on the implementation of an alternative computer system in 1996. The analysis in this paper is informed by actor-network theory, both by an early statement of this approach developed by Callon in the sociology of translation, and also by concepts and ideas from Latour’s more recent restatement of his own position. The paper examines how alternative interests emerged and were stabilized over time, in a way of arguing and acting among key players in the change programme, christened the Golden Circle. The story traces four years in the history of the London Ambulance Service, from the aftermath of October 1992 through the birth of the Golden Circle to the achievement of National Health Service (NHS) trust status. LASCAD was the beginning of the story, this is the middle, an end lies in the future, when the remaining elements of the change programme are enacted beyond the Golden Circle
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