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911.
The Department of Energy's (DOE) scientific and technical information system, operational since the mid-1940s, is described as an example of the manner by which a large Federal R&D agency organizes, manages, and disseminates the information produced by its laboratories and contractor organizations. The role of the Office of Scientific and Technical Information (OSTI) within the DOE R&D cycle and its place in the DOE information infrastructure are outlined. OSTI's activities, products, and services are described under the following headings: management and dissemination of DOE research results; access to worldwide information on energy R&D; information management and accountability systems; and information consulting and specialized services. 相似文献
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914.
Expenditure and revenue problems in central-city school districts: Problems for the 1980s 总被引:1,自引:0,他引:1
This paper examines the combination of expenditure and revenue problems that contribute to the financial plight of central-city school districts. Both educational overburden and related overburden are examined, as are expenditure differentials between central-city and other types of districts. Big-city problems in the areas of tax capacity and effort are examined, and the effects of intergovernmental activity on the problems of city school districts are analyzed. 相似文献
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917.
Shannon C. McGregor Rachel R. Mourão Ivo Neto Joseph D. Straubhaar Alan Angeluci 《广播与电子媒介杂志》2017,61(1):163-181
Second screening is widespread worldwide, particularly in younger populations. We analyze a survey of college students in Brazil and the United States to compare second screening frequency, types, platforms, and motivations between the two countries. Despite lower Internet penetration, Brazilians second screen significantly more than Americans, a result of the country’s tradition of interacting with producers of television. In both countries, those who use the interactive affordances of social media are more likely to second screen. As such, we posit this unique audience-driven act works to bridge Web-connected devices and television to create a converged atmosphere. 相似文献
918.
Michael S. Fanselow Jesus Landeira-Fernandez Joseph P. DeCola Jeansok J. Kim 《Learning & behavior》1994,22(1):72-76
Rats received a 3-sec, 1-mA footshock either immediately or 3 min after placement in a chamber. Postshock pain sensitivity was assessed with the formalin test. The animals that received the 3-min delay between placement and shock showed an analgesic response compared with noshock controls. The immediate-shock animals did not. Thus the immediate-shock deficit, previously reported for freezing and defecation, also occurs for analgesia. This suggests that shock levels sufficient to condition analgesia are not necessarily sufficient to produce analgesia as an unconditional response. As with freezing, there is a dissociation between conditional and unconditional responses in the fear-conditioning system. Increasing immediate-shock levels to 6 sec, 2 mA produced a transient unconditional analgesia. For analgesia, a conditional response is more readily produced than an unconditional response. 相似文献
919.
Erin Edwards Andy Walker Kathleen Bergeson John Louviere Kris Robinson Joseph Higgins Charles Harris 《TechTrends》2001,45(1):29-31
Conclusion The development of templates such as Genetics in Practice is feasible and presents the potential to be a powerful training
tool for online instruction. It is important to keep in mind, however, that use of the tool does not ensure quality case-study
development. 相似文献
920.
时至今日,技术对美国基础教育的影响甚微,鉴于此,美国教育部及技术界领导人士近年来力主将技术与学校教学两者予以整合。这场“技术整合”运动主要还是聚焦于如何运用技术来支持当今学校已经采用的各种教学方式。然而,如果我们想要找到技术能够“转换”现有教学方式的新路径,也许应该迈出更大的步伐。 相似文献