3,693 research outputs found

    A survey of the television viewing habits of students in Somerville High School, Somerville, Massachusetts

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    Thesis (Ed.M.)--Boston UniversityVast amounts of published and unpublished materials concerning the implications of television in the field of education are available. A glimpse into the literature indicates a great deal of controversy over the uses, purposes, advantages, and disadvantages of television and its role in the lives of school children. The purposes of this survey are to find out the television viewing habits of a group of high school students, and the impact of television on some of the educational activities of these students. [TRUNCATED

    COMPUTER APPLICATIONS IN QUANTITATIVE EPR SPECTROSCOPY OF METALLOPROTEINS (FERRITIN, APOFERRITIN, IRON)

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    This dissertation examines the use of computers in quantitative EPR spectroscopy. The computers used ranged from hand held calculators to large main frame systems. Applications discussed are protein assay calculations, an EPR minicomputer interface and software system and the modification of an existing EPR simulation program to include corrections for strains in the g and A tensors. The modification permits more accurate linewidth simulation for lines with large M(,I) values. The computer interface and software allows for the collection of EPR spectra, which can then be stored, scaled, added, subtracted (for comparison) and double integrated. The program enhances weak signals by signal averaging. Double integration was used to assist in the study of early iron binding in horse spleen apoferritin. Iron(II) was added to apoferritin followed by oxidation by a variety of methods. In all cases an iron(III) EPR signal was observed at g\u27 = 4.3 which was attributed to mononuclear Fe(III) bound to the protein; this signal increased until 0.5 equivalent per subunit of added iron. In another experiment increasing amounts of Tb(III) were added to apoferritin solutions. Subsequent addition of 0.5 equivalent of iron(II) per subunit resulted in an Fe(III) signal that decreased as a function of added Tb(III). It was also found that ultracentrifugation of commercial ferritin yields a light, low iron content, fraction which showed a majority of the iron signal intensity relative to the heavy, iron rich, fraction. These results suggest that iron core starts to form at an initial binding site that lies between two adjacent subunits resulting in a 0.5 equivalent of binding site per subunit and that this site also serves as the nucleus of core formation within the ferritin molecule. As the core grows beyond 0.5 equivalents per subunit more of the mononuclear sites are converted into growing core. At 0.5 equivalents per subunit double integration shows that only 20% of the added iron is EPR active suggesting a majority of the added iron is present as polymeric iron (core) species

    Psychiatric Consultation for the Demented Elderly

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    Psychiatric consultations for the demented elderly are often required and requested by the Medical service. With the rise in the number of demented elderly being housed in acute care hospitals, the need.for these consultations is increasing. In this paper, the author presents a case and discusses the role of the consultant in (1) diagnostics, (2) therapeutics, (3) assessment of involuntary vs. voluntary placement in an institution, (4) medical staff education, (5) family education, and (6) the management of evoked feelings and countertransference among the medical and nursing staff

    A Problem Solving Medicine Wheel

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    We use a Medicine Wheel to describe our professional understanding of the nature, teaching and learning of problem solving. We developed this understanding via a professional learning project over several years, and based on our observations of children\u27s efforts and struggles to solve rich and open-ended mathematical problems

    Wrong Line: Proposing a New Test for Discrimination Under the National Labor Relations Act

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    There has long been a consensus among scholars and union-side practitioners that the National Labor Relations Act (NLRA) is under-enforced. As a result, employers often treat violations of the NLRA as a cost of doing business rather than a serious violation of a federal statute. Calls for reform have historically tended to propose legislative amendments to the NLRA to constrain employer conduct and impose greater consequences for discrimination violations. However, little attention has been given to improving the flawed legal test by which such discrimination is analyzed, Wright Line, 251 N.L.R.B. 1083 (1980), enforced 662 F.2d 899 (1st Cir. 1981), cert. denied 455 U.S. 989 (1982). In this article, we propose a new causation test that better addresses how adjudicators should weigh the evidence that Congress and jurists have deemed relevant for evaluating discrimination claims. Our test lightens the initial burden to establish a showing of discrimination, formalizes the employer’s defense burden, and then provides a rebuttal burden for the discriminatee. This is no radical departure from historical precedent. Rather, we argue that the original Wright Line decision itself contained hints of our test, but that adjudicators and practitioners alike have whittled Wright Line to an oversimplified shell at best and an ambiguous, complex inquiry at worst. Our test better fulfills the NLRA’s objective of promoting collective bargaining in the private sector by encouraging a deeper inquiry in NLRA cases’ pre-litigation investigative stage
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