2,782 research outputs found

    The quantitative analysis of gaseous mixtures via microwave line intensity measurements

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    M.S.Joel Q. William

    Boarding School Syndrome: A Phenomenological Study Giving Single-Gender Military Boarding School Alumni a Voice to Tell Their Stories of Life After Graduation

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    The purpose of this phenomenological study was to understand boarding school syndrome for single-gender boarding school alumni. The theory guiding this study was Erikson’s (1968) socioemotional development theory as it describes human development. Development during Erikson’s adolescent period is fragile. This fragile adolescent period is interrupted when students are separated from their families and placed in the boarding school environment under the care of strangers. Research indicates boarding school syndrome correlates with relationship difficulties, college struggles and employment problems of military boarding school graduates (Marsh, 2011; Schaverien, 2011). Schaverien (2011) created the term boarding school syndrome after treating a significant number of boarding school students in her psychiatry practice. The participants of the present study were purposefully selected to include 10 graduates from single-gender military boarding schools. Participants were selected through an initial purposeful sample, followed by convenience, and then snowball sampling. Participant narratives were gathered through individual interviews, a single online focus group and journaling interviews to reveal the essence of the phenomenon and journaling. Data analysis was accomplished through coding procedures to extract and prioritize statements. These statements were then be broken down, coded into units of textual meaning, then reorganized according to central themes which will form the results of the study

    Biophysical and crystallographic studies of immunophilin-ligand complexes

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    Evolution of magnetic fields and mass flow in a decaying active region

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    Five days of coordinated observation were carried out from 24–29 September, 1987 at Big Bear and Huairou Solar Observatories. Longitudinal magnetic fields of an αp sunspot active region were observed almost continuously by the two observatories. In addition, vector magnetic fields, photospheric and chromospheric Doppler velocity fields of the active region were also observed at Huairou Solar Observatory. We studied the evolution of magnetic fields and mass motions of the active region and obtained the following results: (1) There are two kinds of Moving Magnetic Features (MMFs). (a) MMFs with the same magnetic polarity as the center sunspot. These MMFs carry net flux from the spot, move through the moat, and accumulate at the moat's outer boundary. (b) MMFs in pairs of mixed polarity. These MMFs are not responsible for the decay of the spot since they do not carry away the net flux. MMFs in category (b) move faster than those of (a). (2) The speed of the mixed polarity MMFs is larger than the outflow measured by photospheric Dopplergrams. The uni-polar MMFs are moving at about the same speed as the Doppler outflow. (3) The chromospheric velocity is in approximately the opposite direction from the photospheric velocity. The photospheric Doppler flow is outward; chromospheric flow is inward. We also found evidence that downward flow appears in the photospheric umbra; in the chromosphere there is an upflow

    The precautionary principle at work: The case of neonicotinoids and the health of bees

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    In recent years, scientists have noted a decline in the health of bee populations. Whereas a whole host of possible causes have been identified, it is the use of pesticides in agriculture—specifically the use of neonicotinoids—that has warranted some investigation. The scientific evidence of their impact on the health of bees remains debated. This article examines how the UK Government has responded to the decline in bee populations and the apparent link to neonicotinoids. While notionally committed to deploying the Precautionary Principle in such instances, the government has tended to err more on ‘sound science’ as a policymaking tool. Early evidence indicates that the government used the latter initially but has become more amenable to utilising a precautionary approach recently. Whether this can be attributed to an embrace of the Precautionary Principle, or simply a change caused by the installation of a new Secretary of State for the Environment, is open to interpretation

    How the transport infrastructure of Milton Keynes affects the way people travel

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    The new town of Milton Keynes (MK) is home to a globally renowned grid system, comprising vertical and horizontal grid roads, uniquely intertwined by a network of pedestrian and cycle paths, known as ‘Redways.’ This paper explores how this transport infrastructure affects the way the population of MK travels, through the use of a questionnaire survey and semi-structured interviews. A wide range of the relevant literature is reviewed and the data gained from the questionnaire and interviews is examined, using both quantitative and qualitative methods of analysis. The results reveal that the leading travel trend in MK is car use, with the car dominating as the most popular transport mode, to the considerable detriment of other transport modes. Overall, it is clear that MK’s transport infrastructure affects the way people choose to travel, in particular promoting car use

    Deregulation of conveyancing markets in England and Wales

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    There has been much concern in recent years with whether the ‘privilege’ of self- regulation accorded to the professions works for or against the public interest (Federal Trade Commission, 1984; Monopolies and Mergers Commission, 1970, 1976a and 1976b; Department of Trade and Industry, 1989; Courts and Legal Services Act, 1990). Ogus (1993) argues that ‘Self-regulation has had a bad press’ and that ‘most of this criticism is well-founded in relation to some forms of self- regulation’. Economists have been, traditionally, highly critical of many aspects of professional self-regulation.2 More recently, there has been a greater awareness of the informational asymmetry inherent in professional markets which demands some protection for the (infrequent) consumer of personal professional services (see, for example, Dingwall and Fenn (1987)). Commentators have identified three principal instruments of such selfregulators which work against the public interest: (1) restrictions on entry; (2) restrictions on fee competition; and (3) restrictions on advertising and other means of promoting a competitive process within the profession.

    Dynamic test results for the CASES ground experiment

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    The Controls, Astrophysics, and Structures Experiment in Space (CASES) Ground Test Facility (GTF) has been developed at Marshall Space Flight Center (MSFC) to provide a facility for the investigation of Controls/Structures Interaction (CSI) phenomena, to support ground testing of a potential shuttle-based CASES flight experiment, and to perform limited boom deployment and retraction dynamics studies. The primary objectives of the ground experiment are to investigate CSI on a test article representative of a Large Space Structure (LSS); provide a platform for Guest Investigators (GI's) to conduct CSI studies; to test and evaluate LSS control methodologies, system identification (ID) techniques, failure mode analysis; and to compare ground test predictions and flight results. The proposed CASES flight experiment consists of a 32 meter deployable/retractable boom at the end of which is an occulting plate. The control objective of the experiment is to maintain alignment of the tip plate (occulter) with a detector located at the base of the boom in the orbiter bay. The tip plate is pointed towards a star, the sun, or the galactic center to collect high-energy X-rays emitted by these sources. The tip plate, boom, and detector comprise a Fourier telescope. The occulting holes in the tip plate are approximately one millimeter in diameter making the alignment requirements quite stringent. Control authority is provided by bidirectional linear thrusters located at the boom tip and Angular Momentum Exchange Devices (AMED's) located at mid-boom and at the tip. The experiment embodies a number of CSI control problems including vibration suppression, pointing a long flexible structure, and disturbance rejection. The CASES GTF is representative of the proposed flight experiment with identical control objectives
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