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作为社会化搜索理念框架的一个重要组成部分,社会化问答系统(SQA)对Web 2.0用户的信息搜寻与知识获取方式产生了深远影响。在新一代互联网用户生成内容(UGC)环境下,虽然有关信息质量及其评价标准与维度的研究已取得一定程度的进展,但国内目前对SQA系统答案质量要素、SQA信息质量评价指标的研究仍缺乏足够的深度。本文以现有相关研究为基础,在社会化搜索的研究背景下,借助“百度知道”用户对答案质量感知的问卷,综合采用专家访谈、探索性因子分析和验证性因子分析方法,构建了一个基于SQA系统的社会化搜索答案质量评价模型SQA-IQ4Ⅲ,该模型包括内容质量、情境质量、来源质量和情感质量四个维度,共有18项关键性指标要素。研究结论将进一步扩展图书情报学和网络信息资源管理的研究领域,并对SQA用户获取高质量答案以及UGC产品/服务设计产生实际的帮助。图2。表9。参考文献40。 相似文献
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Peter Pollack David Simon David Essoe John Springer Pola Negri Alexander Walker 《Communication Booknotes Quarterly》2013,44(1):4-6
Peter Pollack, The Picture History of Photography (Abrams, $25.00) David Simon, Fifty Classic Motion Pictures (Crown, $9.95) David Essoe's The Films of Clark Gable (Citadel, $10.00) John Springer's The Fondas (Citadel, $10.00) Pola Negri's Memoirs of a Star (Doubleday, $7.95) Alexander Walker's Stardom (Stein & Day, $10.00) T.J. Ross, Film and the Liberal Arts (Holt, Rinehart, and Winston, price unknown) Lewis Jacob's The Movies as Medium (Farrar Straus & Giroux, $8.95; or Noonday paporback, $3.95) Benjamin B. Hampton, A History of the Movies, originally published in 1931 and re-issued now as History of the American Film Industry (Dover paporbacks, $4.00) The Literature of Cinema Don Slay, Conversations: Volume I (Kaleidoscope Press (Albuquerque, New Mexico), $10.00) Raymond Durgnat, The Crazy Mirror: Hollywood Comedy and the American Imago (Horizon Press, $7.50) Harry M. Geduld and Ronald Gottesman's edited collection Serge Eisenstein and Upton Sinclair: Tho Making and Unmaking of “Quo Viva Mexico” (Iniana University gross, $15.00) Verne and Sylvia Carlson's Professional 16/35 mm Cameraman's Handbook (Hastings House, $15.00) Julius Bellone's edited collection, Rennaisance of the Film (Collier paperbacks, $2.95) Richard Randall's excellent Censorship of the Movies (University of Wisconsin Press, $7.95) 相似文献
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《Communication monographs》2012,79(2):102-106
The account sequence is proposed as a mechanism by which parties to initial encounters deal with the discovery of dissimilarity and other conversational “disagreeables.” A classification of offense, reproach, account, and evaluation forms is offered. The recorded conversations of 50 pairs of strangers were examined for the presence of account sequences. Each sequence was coded for type of offense, type of reproach, account strategy, and form of evaluation of the account. Persons were found to be likely to omit accounting when reproached for interaction offenses, work/school offenses, and personal identity offenses, or when the form of the reproach was a direct rebuke or imputation of moral/intellectual superiority of the reproacher. Excuses were most likely to be offered for offenses of taste/attitude/belief, work/school, and personal identity. Reproached individuals refused to account for personal identity and taste/attitude/belief offenses more often than other types; they also refused when the reproach forms direct rebuke, moral/intellectual superiority, and direct request for account were employed. Evaluation behavior was shown to vary only with the immediately preceding account. Honoring was the evaluation form most often associated with the account strategy excuse. Evaluators were significantly likely to retreat if the account‐giver conceded or justified. When the account strategy was doesn't account, justify, or refuse, there was a significant tendency for evaluators to reject/take issue/reinstate the reproach. Finally, when the reproached individual did not account, one evaluation form significantly associated with the omission was drop/switch topic. 相似文献
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《Journal of Informetrics》2023,17(3):101425
Rousseau and Mutz argued that the existing researches on diversity measure methods, such as the Rao-Stirling index, DIV, etc., have shortcomings, and urged colleagues to find a better framework for diversity measure. Based on Shannon entropy and entropy of degree vector sum, in this contribution a new diversity measure EDVS (Entropy of Degree Vectors Sum) is proposed, which meets all requirements of variety, balance and disparity, and can directly calculate the value of diversity from the observed sample data without calculating the joint probability distribution of two random variables, or mutual information. The empirical results show that: (1) the ranking of the EDVS measure has a higher Spearman correlation coefficient with DIV and DIV* than with Shannon entropy. (2) The EDVS ranking is more relevant with DIV* than with DIV. (3) The diversity of soft science journals is higher than that of hard science journals, which indicates that the interdisciplinary research of social sciences and humanities is more common than that of hard sciences such as sciences and engineering sciences. (4) Rao-Stirling index and DIV index are more sensitive to sample size. The computational complexity of the Rao-Stirling index and DIV index is , while the computational complexity of the EDVS index is . This provides the feasibility for analyzing high-dimension networks and large data sets. Results of verification on different types of data sets show that EDVS can not only effectively measure the diversity of disciplines in interdisciplinary research, but also effectively measure the diversity of other entities. 相似文献
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Keshra Sangwal 《Journal of Informetrics》2013,7(2):487-504
The distributions of citations L, two- (IF2) and five-year impact factors (IF5), and citation half-lives λ of journals published in different selected countries are analyzed using Langmuir-type relation: yn = y0 {1 ? αKn/(1 + Kn)}, where yn denotes Ln, IF2n or IF5n of n-ranked journal, y0 is the value of yn when journal rank n = 0, α is an empirical effectiveness parameter, and K is the Langmuir constant. It was found that: (1) the general features of the distribution of Ln, IF2n or IF5n of the journals published in different individual countries are similar to the results obtained before by the author from the analysis of the citation distribution data of papers of individual authors (K. Sangwal, Journal of Informetrics 7 (2013) 36–49), (2) in contrast to the theoretically expected value of the effectiveness parameter α = 1, the calculated values of α > 1 for journals published in different countries, (3) the trends of the distribution of cited half-lives λn of journals differ from those of Ln, IF2n and IF5n data for different countries, and show one, two or three linear regions, the longest linear regions with low slopes are observed in the case of countries publishing relatively high number of journals, and (4) the product of the Langmuir constant K and the number N of journals for the processes of citations and two- and five-year impact factors of journals published in different countries is constant for a process. The results suggest that: (1) the values of α > 1 are associated with a process that retards the generation of items (i.e. citations or impact factors), the difference (α ? 1) being related to the dissemination of contents of the journals published by a country, and (2) the constancy of KN is related to the publication potential of a country. 相似文献
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采用CiteSpace知识可视化工具,基于关键词共现分析法、膨胀词探测法和内容分析法,重点对PQDD数据库中3 973篇欧美图书馆学博士论文的研究热点进行分析,此外,还探讨研究热点的演化、研究前沿及其演化。总体上,欧美图书馆学博士学位论文研究主题特征表现在：研究内容偏重应用,绝大多数论文面向具体图书馆服务与管理,以及以解决实际问题为目标的工作实践。这与欧美整体科学研究的实用性和实证性价值取向是一致的。此外,研究主题多样和细致,非常注重具有特殊身份和职业特征的小用户群体和图书馆馆员研究。 相似文献
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This work maps and analyses cross-citations in the areas of Biology, Mathematics, Physics and Medicine in the English version of Wikipedia, which are represented as an undirected complex network where the entries correspond to nodes and the citations among the entries are mapped as edges. We found a high value of clustering coefficient for the areas of Biology and Medicine, and a small value for Mathematics and Physics. The topological organization is also different for each network, including a modular structure for Biology and Medicine, a sparse structure for Mathematics and a dense core for Physics. The networks have degree distributions that can be approximated by a power-law with a cut-off. The assortativity of the isolated networks has also been investigated and the results indicate distinct patterns for each subject. We estimated the betweenness centrality of each node considering the full Wikipedia network, which contains the nodes of the four subjects and the edges between them. In addition, the average shortest path length between the subjects revealed a close relationship between the subjects of Biology and Physics, and also between Medicine and Physics. Our results indicate that the analysis of the full Wikipedia network cannot predict the behavior of the isolated categories since their properties can be very different from those observed in the full network. 相似文献
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《Communication Teacher》2013,27(2):94-99
Objectives: The purpose of this assignment is to increase students’ understanding of health campaign messages and material design. Upon completing this assignment, students should be able to:
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Understand the importance of effective health campaign material design and the potential problems and implications of ineffective health campaign materials,
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Evaluate health campaign materials for clarity and readability, and
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Design effective health campaign materials that are clear and readable for the lay person.
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Deciphering the diplomatic archives of fifteenth-century Italy 总被引：1，自引：1，他引：0
Paul Marcus Dover 《Archival Science》2007,7(4):297-316
This article examines the repercussions of the explosion of paper documents generated by new developments in diplomatic practice
in Italian city-states between 1450 and 1500. With the proliferation of resident ambassadors whose daily duties centered around
writing and receiving letters and other documents, a flood of written material was produced. The management and archiving
of all this material triggered the formation of new institutions, of new methods of working, and of new personnel. Though
the results of the efforts at archiving were often fitful and incomplete, the governments of the Italian peninsula henceforth
sought to collect, control and preserve diplomatic documents so that they could be referenced in the future.
Paul M. Dover is Assistant Professor of History at Kennesaw State University in Kennesaw, Georgia. He has published several articles on the political and intellectual history of Renaissance Italy. He is currently writing a book on ambassadors and the culture of diplomacy in fifteenth-century Italy. He holds a PhD from Yale University. 相似文献
| Paul Marcus DoverEmail: |
Paul M. Dover is Assistant Professor of History at Kennesaw State University in Kennesaw, Georgia. He has published several articles on the political and intellectual history of Renaissance Italy. He is currently writing a book on ambassadors and the culture of diplomacy in fifteenth-century Italy. He holds a PhD from Yale University. 相似文献
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《Journal of Informetrics》2007,1(2):170-177
Hirsch's h-index seeks to give a single number that in some sense summarizes an author's research output and its impact. Essentially, the h-index seeks to identify the most productive core of an author's output in terms of most received citations. This most productive set we refer to as the Hirsch core, or h-core. Jin's A-index relates to the average impact, as measured by the average number of citations, of this “most productive” core. In this paper, we investigate both the total productivity of the Hirsch core – what we term the size of the h-core – and the A-index using a previously proposed stochastic model for the publication/citation process, emphasising the importance of the dynamic, or time-dependent, nature of these measures. We also look at the inter-relationships between these measures. Numerical investigations suggest that the A-index is a linear function of time and of the h-index, while the size of the Hirsch core has an approximate square-law relationship with time, and hence also with the A-index and the h-index. 相似文献
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Keshra Sangwal 《Journal of Informetrics》2013,7(1):36-49
The citation distribution of papers of selected individual authors was analyzed using five mathematical functions: power-law, stretched exponential, logarithmic, binomial and Langmuir-type. The former two functions have previously been proposed in the literature whereas the remaining three are novel and are derived following the concepts of growth kinetics of crystals in the presence of additives which act as inhibitors of growth. Analysis of the data of citation distribution of papers of the authors revealed that the value of the goodness-of-the-fit parameter R2 was the highest for the empirical binomial relation, it was high and comparable for stretched exponential and Langmuir-type functions, relatively low for power law but it was the lowest for the logarithmic function. In the Langmuir-type function a parameter K, defined as Langmuir constant, characterizing the citation behavior of the authors has been identified. Based on the Langmuir-type function an expression for cumulative citations L relating the extrapolated value of citations l0 corresponding to rank n = 0 for an author and his/her constant K and the number N of paper receiving citation l ≥ 1 is also proposed. 相似文献
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《Journal of Informetrics》2007,1(2):161-169
The Web of Science is no longer the only database which offers citation indexing of the social sciences. Scopus, CSA Illumina and Google Scholar are new entrants in this market. The holdings and citation records of these four databases were assessed against two sets of data one drawn from the 2001 Research Assessment Exercise and the other from the International bibliography of the Social Sciences. Initially, CSA Illumina's coverage at journal title level appeared to be the most comprehensive. But when recall and average citation count was tested at article level and rankings extrapolated by submission frequency to individual journal titles, Scopus was ranked first. When issues of functionality, the quality of record processing and depth of coverage are taken into account, Scopus and Web of Science have a significant advantage over the other two databases. From this analysis, Scopus offers the best coverage from amongst these databases and could be used as an alternative to the Web of Science as a tool to evaluate the research impact in the social sciences. 相似文献
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In the present study we have tried to trace the growth of malaria research at Global Level and the distribution of articles in various journals for the period 1955–2005. The data have been extracted from a database, which has been developed in-house from MEDLINE, SCI, TDB, Ovid Heath Information and Indian Science Abstracts. Study indicates that the exponential model fits the data on journals, articles and authors. The R2 value for the trend for journals, articles, and authors are 0.9502, 0.9475, and 0.9651, respectively. The growth rates for journals, articles and authors are 5.31%, 7.38%, and 10.06%, respectively. The linear multiple regression equation that Articles = ?39.2771 + 3.61719*journals + 0.085882*Authors (R2 = 99.16%) is most meaningful and it may be used to estimate the articles for given numbers of journals and authors. 相似文献
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World Book and Copyright Day was established by a resolution of the 28th General Council of UNESCO in 1995. Its avowed aim
was ‘to pay a world-wide tribute to books and authors on this date, encouraging everyone, and in particular young people,
to discover the pleasure of reading and gain a renewed respect for the irreplaceable contributions of those who have furthered
the social and cultural progress of humanity.’ This article examines the context for World Book and Copyright Day, the extent
to which cultural and commercial interests have converged in the activities of the day and argues that an analysis of the
activities of the day reveal a specifically European attitude to book culture.
相似文献
| Alexis WeedonEmail: |
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Gerald S. Greenberg 《Communication Booknotes Quarterly》2013,44(2):78-82
The following essay updates my TABLOID JOURNALISM: AN ANNOTATED BIBLIOGRAPHY OF ENGLISH‐LANGUAGE SOURCES (Westport, CT: Greenwood “Bibliographies and Indexes in Mass Media and Communications, Number 10,”; 1996—$65.00, ISBN 0–313–29544–1, 187 pp.) A. U.S. print journalism IT'S ALIVE! HOW AMERICA'S OLDEST PAPER CHEATED DEATH AND WHY IT MATTERS by Steven Cuozzo (New York: Times Books, 1996—$25.00, ISBN 0–8129–2286–7, 342 pp.) “Reversing the Romance: Class and Gender in the Supermarket Tabloids,” by Theron Britt (Prospect, 21: 435–451 [1996]) “Virgins, Vamps and the Tabloid Mentality,” by Linda Fairstein (Media Studies Journal, 12: 92–99 [Winter 1998]) SCOOPED! MEDIA MISS REAL STORY ON CRIME WHILE CHASING SEX, SLEAZE, AND CELEBRITIES by David J. Krajicek (New York: Columbia University Press, 1998—$24.95, ISBN 0–2311–0292–5, 230 pp., bibliographical references) B. U.S. television “The World Outside: Local TV News Treatment of Imported News,” by Raymond L. Carroll and C. A. Tuggle (Journalism and Mass Communication Quarterly 74: 123–133 [1997]) “Tabloid TV, Courtesy of the Education Department,” by Steven Drummond (Teacher Magazine 9: 14–15 [April 1998]) THE JOURNALISM OF OUTRAGEOUSNESS: TABLOID TELEVISION NEWS VS. INVESTIGATIVE NEWS by Matthew C. Ehrlich (Journalism and Mass Communication Monographs, No.155 [1996]) “Presumed Innocent? A Comparative Analysis of Network News, ‘Newsmagazines’ and Tabloid TV's Pretrial Coverage of the O. J. Simpson Criminal Case,” by Steven A. Esposito (Communications and the Law, 18: 49–72 [December 1996]) “Tabloid and Traditional Television News Magazine Crime Stories: Crime Lessons and Reaffirmation of Social Class Distinctions,” by Maria Elizabeth Grabe (Journalism and Mass Communication Quarterly 73: 926–946 [1996]) TABLOID TELEVISION: POPULAR JOURNALISM AND THE “OTHER NEWS” by John Langer (London: Routledge “Communication and Society,”; 1998—$24.99, ISBN 0–4150–6636–0, 192 pp., appendix, bibliographical references) “Human Nature and Crime Control: Improving the Feasibility of Nurturant Strategies,”; by Bryan Vila (Politics and the Life Sciences, 16: 3–21 [1997]) C. Legal implications ‘Get That Camera Out of My Face!”: An Examination of the Viability of Suing ‘Tabloid Television’ for Invasion of Privacy,” by Eduardo W. Gonzalez (University of Miami Law Review 51: 935–953 [1997]) “Punishing the Press: Using Contempt of Court to Secure the Right to a Fair Trial,” by Stephen J. Krause (Boston University Law Review 76: 537–574 [1996]) “The Confluence of Sensationalism and News: Media Access to Criminal Investigations and the Public's Right to Know,” by Jimmy R. Moye (CommLaw Conspectus, 6: 89–99 [1998]) D. International perspectives “Public Discourse/Private Fascination: Hybridization in ‘True‐Life‐Story’ Genres,” by Ib Bondebjerg (Media Culture &; Society 18: 27–45 [1996]) “Anthropology in the Body Shop: Lords of the Garden, Cannibalism, and the Consuming Desires of Televisual Anthropology,” by Rosalind C. Morris (American Anthropologist, 98: 137–146 [1996]) “The Media's Impact on International Affairs, Then and Now,” by Johanna Neuman (SAIS Review, 16: 109–123 [Winter/Spring 1996]) “Core of the Problem: Newspaper's Fate Will Gauge More Than Press Freedom,”; by Andrew Sherry (Far Eastern Economic Review, 160: 61–63 [3 July 1997]) 相似文献
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日本的图书馆史研究在概念辨析、研究方法、研究视野方面颇具特色。本文通过对庆应大学所藏图书馆史文献进行系统梳理,总结日本图书馆史研究的特点。在理论方面,注重方法论的探讨与研究领域的划分,如关于图书馆史、图书馆学史和图书馆思想史的认识,以及对日本图书馆史研究分野的概括等;在内容方面,由图书馆史研究分化为图书馆学史研究、图书馆思想史研究,后来细化为运动史、服务史、藏书史、人物传记等各个主题;在研究基础方面,日本图书馆史有教材、史料和工具书;在组织方面,1982年成立专门研究图书馆史的组织图书馆史研究会,1995年后改名为日本图书馆文化史研究会,通过召开专门会议与发行刊物进行研究交流,开展学术批评;在研究视野上,秉承了日本受容文化的特色,研究视野宽广,并不限于日本,对世界图书馆史,以及中美德英俄等各主要国家的图书馆史都有较为深入的研究,形成了翻译著作多、国际研究著作多的特点。日本图书馆史研究的这些成果和特点可为我国同类研究提供借鉴。参考文献23。 相似文献
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Sara Hayden 《传播与批判/文化研究》2013,10(2):111-131
The contemporary U.S. debate over abortion has been waged as a battle between <life> and <choice>. The author traces the development of these ideographs, arguing that through their verbal and visual strategies, advocates on both sides of the issue have rendered ideographic meaning concrete. Whereas the fixed definitions have served the cause of <life> well, they have been detrimental for <choice>, leading advocates to seek out ways to revitalize the debate. The 2004 March for Women's Lives was a key event in this larger effort; through it, participants revitalized the abortion debate, bringing renewed flexibility to the ideograph <choice> at the same time it challenged the fixed status, and the veracity, of the ideograph <life>. 相似文献