共查询到20条相似文献，搜索用时 31 毫秒
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滦徒哟ナ絀C卡系统,能够脱离读卡机显示IC卡上的存储信息,克服了以往IC卡的局限,为IC卡提供了全新的应用领域,前景广阔。智能卡芯片:6520,系统设计:5007,读卡机:3032,应用领域:2965,接触式:2503,控制字:2143,读操作:1331,写操作:895,操作时序:785,前景广阔:611智能卡芯片:6477, 相似文献
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This study examines cable system diversification into three nontraditional services: pay-per-view television, high-speed Internet access, and telephony. An econometrics model based on the Industrial Organization Model is used to explore the factors that have led to variation in diversification among cable systems. Specifically, this study examines how three sets of variables, namely, cable system characteristics, market structure, and market demographics, influenced cable system diversification. Multiple linear regression was performed to identify the determinants of cable system total degree of diversification, which is defined to be the number, from 0 to 3, of the three nontraditional services offered by a cable system. Regression results indicate that Multiple System Operator (MSO) ownership, the number of basic cable service subscribers, and the number of broadcast television stations receivable over the air all had a statistically significant positive relationship to cable system total degree of diversification, whereas the number high-speed Internet service providers in a cable franchise area had a statistically significant negative relationship to cable system's total degree of diversification. 相似文献
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Reviewed by Grace Gmeindl 《Medical reference services quarterly》2013,32(1):101-102
ABSTRACTHospital libraries serving military bases offer a different perspective on library services. Two libraries located on islands in the Pacific Ocean provide services to active duty service men and women, including those deployed to other regions of the world. In addition, these hospital libraries serve service members’ families living on the base, and often citizens from the surrounding communities. 相似文献
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Reviewed by Lindsay H. Hoffman 《Mass Communication and Society》2013,16(1):139-142
Amy Reynolds and Brooke Barnett (Eds). Communication and Law: Multidisciplinary Approaches to Research. Mahwah, NJ: Lawrence Erlbaum Associates, Inc., 2006 394 pp., ISBN 0805849424 (hardcover). 相似文献
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《Journal of Government Information》1999,26(5):467-483
This article extends Stratford's brief observations about the problematic status of racial and ethnic group statistics to a discussion of the relationship among these statistics, public policy, and the conceptual status of race and ethnicity. Federal statistics are organizational products that are socially constructed. They represent the implementation of public policies that govern political, social, and economic life. It is the interaction between politics and the subjective meaning of race and ethnicity that is responsible for the continual modification of racial and ethnic group statistics. The article discusses the premises on which racial and ethnic group statistics have been based and illustrates how they were implemented in the instructions of the decennial censuses for classifying the race and ethnicity of the population. The article then summarizes some of the empirical evidence from recent research conducted by federal agencies and social scientists to show that racial and ethnic group statistics produced by government record keeping systems have no objective status. The meaning of race and ethnicity is contextual, situational, and subjective, and, thus, how respondents and observers define these concepts has significant consequences for the quality of federal statistics. 相似文献
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Leigh Mihlrad 《Medical reference services quarterly》2013,32(2):209-210
The Fourth-year Academic Clinical Training and Teaching Selective (FACTTS) is a course taught by medical and library faculty on the practice of evidence-based medicine and critical appraisal of the medical literature. This study assesses the impact of the course on students' understanding of the subject matter by examining three years of pre- and post-test data and addresses whether the number of sessions in the course affects the knowledge gained by the students. The data show an improvement in the students' understanding of course material, but no benefit was found in having two versus three sessions. 相似文献
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