51 research outputs found

    Logics, thresholds, strategic power, and the promotion of liberalisation by governments: a case study from British Higher Education

    Get PDF
    Liberalisation has become an increasingly important policy trend, both in the private and public sectors of advanced industrial economies. This article eschews deterministic accounts of liberalisation by considering why government attempts to institute competition may be successful in some cases and not others. It considers the relative strength of explanations focusing on the institutional context, and on the volume and power of sectoral actors supporting liberalisation. These approaches are applied to two attempts to liberalise, one successful and one unsuccessful, within one sector in one nation – higher education in Britain. Each explanation is seen to have some explanatory power, but none is sufficient to explain why competition was generalised in the one case and not the other. The article counsels the need for scholars of liberalisation to be open to multiple explanations which may require the marshalling of multiple sources and types of evidence

    AVIATR - Aerial Vehicle for In-situ and Airborne Titan Reconnaissance A Titan Airplane Mission Concept

    Get PDF
    We describe a mission concept for a stand-alone Titan airplane mission: Aerial Vehicle for In-situ and Airborne Titan Reconnaissance (AVIATR). With independent delivery and direct-to-Earth communications, AVIATR could contribute to Titan science either alone or as part of a sustained Titan Exploration Program. As a focused mission, AVIATR as we have envisioned it would concentrate on the science that an airplane can do best: exploration of Titan's global diversity. We focus on surface geology/hydrology and lower-atmospheric structure and dynamics. With a carefully chosen set of seven instruments-2 near-IR cameras, 1 near-IR spectrometer, a RADAR altimeter, an atmospheric structure suite, a haze sensor, and a raindrop detector-AVIATR could accomplish a significant subset of the scientific objectives of the aerial element of flagship studies. The AVIATR spacecraft stack is composed of a Space Vehicle (SV) for cruise, an Entry Vehicle (EV) for entry and descent, and the Air Vehicle (AV) to fly in Titan's atmosphere. Using an Earth-Jupiter gravity assist trajectory delivers the spacecraft to Titan in 7.5 years, after which the AVIATR AV would operate for a 1-Earth-year nominal mission. We propose a novel 'gravity battery' climb-then-glide strategy to store energy for optimal use during telecommunications sessions. We would optimize our science by using the flexibility of the airplane platform, generating context data and stereo pairs by flying and banking the AV instead of using gimbaled cameras. AVIATR would climb up to 14 km altitude and descend down to 3.5 km altitude once per Earth day, allowing for repeated atmospheric structure and wind measurements all over the globe. An initial Team-X run at JPL priced the AVIATR mission at FY10 $715M based on the rules stipulated in the recent Discovery announcement of opportunity. Hence we find that a standalone Titan airplane mission can achieve important science building on Cassini's discoveries and can likely do so within a New Frontiers budget

    ''With Great Power Comes Great Responsibility'': Democracy, the Secretary of State for Health and Blame Shifting Within the English National Health Service

    Get PDF
    The English National Health Service (NHS) has suffered from a democratic deficit since its inception. Democratic accountability was to be through ministers to Parliament, but ministerial control over and responsibility for the NHS were regarded as myths. Reorganizations and management and market reforms, in the neoliberal era, have centralized power within the NHS. However, successive governments have sought to reduce their responsibility for health care through institutional depoliticization, to shift blame, facilitated through legal changes. New Labour’s creation of the National Institute for Clinical Excellence (NICE) and Monitor were somewhat successful in reducing ministerial culpability regarding health technology regulation and foundation trusts, respectively. The Conservative-Liberal Democrat coalition created NHS England to reduce ministerial culpability for health care more generally. This is pertinent as the NHS is currently being undermined by inadequate funding and privatization. However, the public has not shifted from blaming the government to blaming NHS England. This indicates limits to the capacity of law to legitimize changes to social relations. While market reforms were justified on the basis of empowering patients, I argue that addressing the democratic deficit is a preferable means of achieving this goal

    Applications of electrified dust and dust devil electrodynamics to Martian atmospheric electricity

    Get PDF
    Atmospheric transport and suspension of dust frequently brings electrification, which may be substantial. Electric fields of 10 kVm-1 to 100 kVm-1 have been observed at the surface beneath suspended dust in the terrestrial atmosphere, and some electrification has been observed to persist in dust at levels to 5 km, as well as in volcanic plumes. The interaction between individual particles which causes the electrification is incompletely understood, and multiple processes are thought to be acting. A variation in particle charge with particle size, and the effect of gravitational separation explains to, some extent, the charge structures observed in terrestrial dust storms. More extensive flow-based modelling demonstrates that bulk electric fields in excess of 10 kV m-1 can be obtained rapidly (in less than 10 s) from rotating dust systems (dust devils) and that terrestrial breakdown fields can be obtained. Modelled profiles of electrical conductivity in the Martian atmosphere suggest the possibility of dust electrification, and dust devils have been suggested as a mechanism of charge separation able to maintain current flow between one region of the atmosphere and another, through a global circuit. Fundamental new understanding of Martian atmospheric electricity will result from the ExoMars mission, which carries the DREAMS (Dust characterization, Risk Assessment, and Environment Analyser on the Martian Surface)-MicroARES (Atmospheric Radiation and Electricity Sensor) instrumentation to Mars in 2016 for the first in situ measurements

    Experimental progress in positronium laser physics

    Get PDF

    Earth as a Tool for Astrobiology—A European Perspective

    Get PDF

    AVIATR—Aerial Vehicle for In-situ and Airborne Titan Reconnaissance

    Get PDF

    The production of mesons in nucleon-nucleon collisions

    No full text
    • 

    corecore