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信息构建(IA)与信息组织的比较研究 总被引：6，自引：0，他引：6
对信息构建（IA）和信息组织进行了比较研究，指出两者在研究对象、研究目的上存在一致性，同时指出信息构建与信息组织在其产生的社会背景、所采用的技术方法以及两者与情报学的关系方面存在相异性。 相似文献
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基于变异的模糊测试工具能通过变异初始种子文件来生成许多输入文件(测试样例),使用这些输入文件测试目标程序,挖掘程序的潜在崩溃.现存的种子选择策略的效率似乎并不比随机选择种子文件作为初始种子集更高效.因此,提出一种新颖、通用的模糊测试种子生成系统SmartSeed,用以提升模糊测试的效率.将SmartSeed与AFL结合,在12个具有不同输入文件格式的开源程序上测试其漏洞挖掘性能,进一步将SmartSeed与其它模糊测试工具结合以测试其兼容性.通过实验测试,SmartSeed被证明具有:①SmartSeed能生成具有不同输入格式的种子文件,并能在绝大多数测试程序上显著提升模糊测试工具的漏洞挖掘效率;②SmartSeed与现行主流模糊测试工具能够很好兼容.实验结果表明,SmartSeed可比现存最优种子选择策略多发现超过一倍数量的程序崩溃,并多发现5040条执行路径.根据SmartSeed的报告结果,申请得到16个新的漏洞CVE编号. 相似文献
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Yu-Wei Chang 《Library & information science research》2018,40(2):125-134
This bibliometric analysis explores the interdisciplinary characteristics of library and information science (LIS) from the perspective of interdisciplinary LIS authors. Articles published in non-LIS journals by LIS authors between 2005 and 2014 and indexed by the Web of Science database formed the basis for analysis. The results showed that interdisciplinary LIS authors published articles in numerous disciplines; a largest number of articles were found in medical and music journals. Over half of the articles published by these authors were not LIS-related and were primarily singly-authored articles and articles coauthored by LIS and non-LIS authors. Most articles coauthored by only LIS authors involved LIS-related topics. Interdisciplinary LIS authors preferred to publish by themselves. The majority of interdisciplinary authors were academic librarians. Interdisciplinary LIS authors most frequently collaborated with other LIS authors, followed by authors from the field of medicine. Although interdisciplinary LIS authors are a minority, they are active in expanding the visibility of LIS. 相似文献
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Five news media in the U.S. were examined to determine the optimaltime-lag for agenda-setting effects to occur for each. Publicresponses to an open-ended question ‘What is the numberone problem facing our country today?’ were compared tomedia coverage from one to 26 weeks earlier. A number of differenceswere found across the five media. The results show that televisioncoverage had a shorter optimal time-lag than newspapers. Themore immediate effect of television news, however, quickly deteriorated,and newspapers had a stronger long-term agenda-setting effect.National and regional media also had a more immediate impactthan local media. All media, generally, had slightly shorteroptimal time-lags than previous research would suggest. 相似文献
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景玉薇 《渭南师范学院学报》2014,(1):93-96
新石器时代晚期,部落间征战频繁,玉器上二元对立纹饰呈多样化表现,纹饰内容多为征服部落与被征服部落的图腾形象。殷商时期,二元对立观念依然存在,但是由于统治者对权利的重视,商人不以自己的图腾为征服形象而借用夏代的图腾为征服者形象。西周时期,周公提出以“德”治国,不再提倡征服,所有部落均有生存的权利,表现在玉器上的二元对立纹饰开始淡化。春秋之后,二元对立纹饰基本消失。 相似文献
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THE AGENDA-SETTING EFFECTS OF INTERNATIONAL NEWS COVERAGE: AN EXAMINATION OF DIFFERING NEWS FRAMES 总被引：1，自引：0，他引：1
The agenda-setting impact of international news was examinedby comparing the coverage of 15 categories of internationalnews in four news media (the New York Times, ABC, CBS, and NBC)with the level of public concern with international problemsas recorded by all 41 Gallup organization's most important problempolls conducted from 1975 to 1990. The findings suggest thatthe way in which international news is framed in news reportsmay determine the magnitude of salience cues. Four categoriesof news coverage demonstrated the strongest agenda-setting influence:international conflicts involving the United States; terrorisminvolving the U.S.; crime/drugs; and military/nuclear arms.Generally, the results support previous findings which concludedthat stories with high degrees of conflict and stories withconcrete presentations (by including Americans in the stories)have the strongest agenda-setting impact. In addition, two newscategories—international trade not involving the UnitedStates, and politics not involving the United States—correlatednegatively with public concern for two of the news media. Thisresult suggests that press coverage, besides increasing publicconcern with certain issues, can also decrease concern. Certaincategories of news, such as stories dealing with internationalpolitics and trade, can give individuals cues that the internationalarena is functioning quite smoothly. These types of internationalnews stories show individuals that international problems arenot really serious problems at all. 相似文献
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This study uses bibliometric analysis and citation context analysis to identify the influence of the main concepts embedded in Taylor’s 1968 classic article entitled Question-Negotiation and Information-Seeking in Libraries. This study analyses articles published between 1969 and 2010 which cite Taylor’s article. The results show that Taylor’s article on a question-negotiation model is increasingly visible and its influence is not limited to the discipline of library and information science. Of the 14 cited concepts identified, the concept of “four levels of information needs” was cited most (31.7%), followed by “question negotiation” (20.5%) and “other concepts relating to information needs” (17.9%). The results indicate an increasing trend in the citations of “four levels of information needs” and this concept also received the most attention from information retrieval research. A decreasing trend was evident for the concept of “question negotiation” and this concept was frequently cited by reference service researchers. In addition, among the 10 citation functions, “related literature” was dominant (30.8%). Both “evidence” and “views” were in second place with the same percentage (18.7%), followed by “terms” (9.2%) and “background information” (7.2%). A decreasing trend was identified in the top three citation functions, whereas an increasing trend was observed in the “term” and “background information” functions. 相似文献
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Michael Gale Marisa Franco Erin Reese Heidi Hutman Yu-Wei Wang 《Journal of College Student Psychotherapy》2020,34(3):198-210
ABSTRACT One response to increased service needs at university counseling centers has been community provider referrals. However, certain demographic groups may be more successful in these referrals than others. We hypothesized that students who identify as White, female, sexual minority, and older, would be more likely to be successfully referred. Self-reported demographic information was collected from clients at a Mid-Atlantic counseling center. A logistic regression analysis was conducted to test differences in referral status. Age alone emerged as significant, with older students being more likely than younger students to have a successful referral outcome. Implications of these findings are discussed. 相似文献
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