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Jon S. Hesseldenz 《Research in higher education》1976,5(2):179-191
Two procedures for validating incomes self-reported in ranges by University of Kentucky doctoral graduates, one comparing grouped data to income data collected by the National Academy of Sciences (1974) for the same year, 1973, the other comparing individual self-report data in a double-blind process to state income tax records, indicating that the self-report data were generally accurate. A check of respondents versus nonrespondents in various categories (sex, age, graduation year, Holland type, Biglan type) showed no difference in the proportion of response in any category. Comparison of nonrespondent income with respondent income in state income tax records revealed that nonrespondents averaged almost $3,500.00 less income during that year than did respondents. This finding held true across all categories but two. 相似文献
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Andreas Pöllmann 《Educational studies》2008,34(1):45-53
The link between formal education and the formation of national attachment is widely acknowledged. Yet, research on teachers’ national attachment is still relatively rare. Based on a comparative analysis of survey data obtained from 281 Berlin and London state secondary school head teachers, this paper proposes a multivariate model in which notions of national identity, levels of national pride and levels of supranational attachment represent predictors of national attachment. The respective statistical analyses reveal striking cross‐national similarities in terms of the individual and joint explanatory impact of these predictors. Other findings concern correlations between different notions of Britishness/Germanness and levels of national attachment, the relationship between national and supranational attachment, and associations between national pride and national attachment. 相似文献
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An operational prototype inhomogeneous distributed database system has been built to provide homogeneous access for researchers and managers of science policy to data on research projects held in three countries. The architecture is sufficiently general not only to accommodate additional countries and databases on research projects, but also to provide a general framework for other international collaborative projects aimed at the provision of information. The design exhibits an optimal compromise between sufficient data to satisfy a retrieval request and the minimal data for transmission to maintain the database. 相似文献
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利用派生成组性质相同的小断裂判断主断层的性质 总被引：3，自引：0，他引：3
丁宽 《雁北师范学院学报》2006,22(5):55-57
同煤集团公司四台矿406采区建井期间首采工作面布置过程中,运输顺槽掘进至520m时,出现了一条落差超过煤层厚度的断层,落差和性质不明,只知道产状.在可利用的地质构造资料很少的情况下,仅利用本巷已接露的一组性质都为正断层、倾向近270°、倾角较大、落差很小的小断层组的性质、产状等要素来推断与之相距约15m左右的主断层的性质.然后提出用钻机向上打孔来探煤的方案,一次性地找到了煤层断失翼的位置,抢回了工期,节省了钻探费用.成功地解决了巷道在掘进过程中遇断的问题. 相似文献
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Pedro Hepp Ernesto Laval Gerardo Moënne Miguel Ripoll 《Education and Information Technologies》1996,1(1):5-20
The use of networks in education is experiencing world-wide growth. Many schools have taken advantage of the reduction of price in modems, the emergence of electronic bulletin boards and world-wide web pages with educational content, and the availability of software for public participation in networks. Nevertheless, little information is available about the quality and quantity of existing network traffic; information that would allow organizations, network project administrators and supporters, to evaluate its impact, know its usage, evolution and projections. This paper presents some of the traffic monitoring mechanisms presently in use in a Chilean educational network (the Enlaces Project), together with examples of the information collected through these mechanisms. 相似文献
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本文主要针对当今社会比较流行的《NOVELL》局域网络内用户间数据通信受限制这一问题,提出了一种新的具体解决办法,使用户之间信息传输的内容、范围更加广泛、可行。从而解决了《NOV-ELL》局域网络系统内用户间数据通信受限制这一难题。全文从数据通信角度对网内电子邮件的具体组织、发送到接收等方面都做了较详细的介绍,使广大网络用户了解到一种新的既简单又实用的数据通信方法,从而达到完善网络系统功能,促进《NOVELL》局域网络系统的应用和发展。 相似文献
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赵丹 《金华职业技术学院学报》2009,9(3):82-85
为了加快科学技术的发展,使广大科技人员、科研单位和企业之间的信息发布、获取、互动和沟通更加及时、准确,推进金华科技工作信息化,建立科技系统实名制黄页通讯簿——构建浙江科技信箱一金华科技信箱;通过加大宣传、技术培训力度和加强系统维护管理等措施使科技信箱得以推广,并提高科技信箱用户群体的覆盖面及其影响力。实践证明,科技信箱真正成为面向全省广大科技人员和企业的信息交流工具和互动平台,成为金华市推进科技工作信息化的一个重要载体。 相似文献
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This meta-analysis examined 35 study results within last 10 years that directly compared the response rates of e-mail versus mail surveys. Individual studies reported inconsistent findings concerning the response rate difference between e-mail and mail surveys, but e-mail surveys generally have lower response rate (about 20% lower on the average) than mail surveys. Two study features (population type and follow-up reminders) could account for some variation in the e-mail and mail survey response rate differences across the studies. For the studies involving college populations, the response rate difference between e-mail and mail surveys was much smaller, or even negligible, suggesting that e-mail survey is reasonably comparable with mail survey for college populations. The finding about follow-up reminder as a statistically significant study feature turns out to be somewhat an anomaly. Other study features (i.e., article type, random assignment of survey respondents into e-mail and mail survey modes, and use of incentives) did not prove to be statistically useful in accounting for the variation of response rate differences between mail and e-mail surveys. The findings here suggest that, in this age of internet technology, mail survey is still superior to e-mail survey in terms of obtaining higher response rate. 相似文献
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Responses to questions on demography, knowledge about student fees, attitudes toward collection and distribution of fees, and utilization and satisfaction with 8 specific fee-funded programs were collected by mail survey from a sample of 1,002 University of Colorado (Boulder campus) students stratified by class year, ethnic group, and school. Only one-third paid their own fees, and less than 30% knew the amount of their fees within $5. Only graduate students advocated a cutback in services to obtain a reduction in fees; most students would accept higher fees to fund three new programs. Differences among students in attitudes toward and use of fee-funded services were definite among year subgroups and minimal among ethnic and school subgroups. 相似文献