共查询到20条相似文献，搜索用时 62 毫秒
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《The Reference Librarian》2013,54(30):45-58
Entry level reference librarians must make a rapid transition from the reference classroom to the scheduled service hours at the reference desk. A questionnaire was sent to academic and public librarians to ask them to list the most important items of information or abilities they find they need to teach the entry level librarian. This is a brief discussion of relevant literature and a report of the 72 per cent return on the questionnaire. Five "needs" surfaced as ranking high for each type of library with three listed in common. Some suggestions are given for developing in-service education programs for reference librarians. 相似文献
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《文物保护研究》2013,58(4):231-254
AbstractAnalyses of pigments from palettes used by J.M.W. Turner (active c.1792–c.1850) by means of microscopy, microchemical analysis, thin-layer chromatography, energy-dispersive X-ray analysis, X-ray diffraction and Fourier transform infrared spectroscopy are given. The occurrence of pigments in Turner's dated oil paintings and watercolours is also given, arranged by five-year periods. These findings are discussed in the context of published analyses of pigments from the first half of the nineteenth century. Turner used cobalt blue, emerald green, viridian, orange vermilion, barium chromate, chrome yellow, chrome orange and chrome scarlet within a few years of their known dates of discovery. It has become clear that Turner was using, or at least experimenting with, practically all the pigments known to be available at that time. In a few cases, in the light of these results, ideas on the availability of pigments to English artists have been revised backwards to the first known date of manufacture. Turner also possessed and used a wide range of red and yellow organic pigments, but few organic greens. The dyestuff extracted from Rubia tinctorum L. madder on an aluminiumcontaining substrate can be distinguished from the same madder on different substrates by its strong pink fluorescence in both ultraviolet and green light. The other red organic pigments (a second madder, brasilwood and cochineal dyestuffs on a range of substrates containing aluminium, copper, iron, aluminium/copper and clays) show negligible fluorescence. The red organic pigments were used in oil medium as well as watercolour, the yellows only in watercolour medium. 相似文献
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In terms of positioning a student for Ph.D. admission, the decision to complete a thesis or comprehensive exams as one's M.A. capstone is based on much speculation, but little systematic study. This study surveyed M.A. and Ph.D. Communication program representatives about doctoral programs' admission preferences and practices regarding applicants holding M.A.s from other institutions, as well as perceptions of their institution's students' actual capstone choices. In nearly half the cases, doctoral program representatives were unaware of whether students admitted with M.A.s had elected the thesis, comprehensive exams, or some other capstone option. Additionally, the results show that Ph.D. programs prioritize students' writing samples, statements of reasons, and GRE scores when deciding admission. There were discrepancies between M.A. program representatives' perceptions of what information weighed most heavily with doctoral admissions committees and the priorities reported by Ph.D. program representatives. 相似文献
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