Using the Content of Online Privacy Notices to Inform Public Policy: A Longitudinal Analysis of the 1998-2001 U.S. Web Surveys

In the United States, Congress has had a long-standing interest in consumer privacy and the extent to which company practices are based on fair information practices. Previously, public policy was largely informed by anecdotal evidence about the effectiveness of industry self-regulatory programs. However, the Internet has made it possible to unobtrusively sample web sites and their privacy disclosures in a way that is not feasible in the offline world. Beginning in 1998, the Federal Trade Commission relied upon a series of three surveys of web sites to assess whether organizations post online privacy disclosures and whether these disclosures represent the U.S. definition of fair information practices. While each year's survey has provided an important snapshot of U.S. web-site practices, there has been no longitudinal analysis of the multiyear trends. This study compares a subset of equivalent individual-level web-site data for the 1998, 1999, 2000, and 2001 web surveys. Implications for using this type of research to inform public policy are discussed.     

利用开源系统建立图书馆的WEB2.0信息服务

Web2.0带来了信息传播方式的根本变化,本文简单介绍了Web2.0的特点和技术,并以我馆实际应用为例,介绍了如何利用开源软件建立图书馆的Web2.0信息服务.     

知识本体与信息过滤

本文首先分析了信息过滤的方法和实现技术，认为本体可为信息过滤系统提供立体语义词典，在信息过滤中具有广泛的应用前景；随后介绍了本体的概念和作用，并详细论述了本体在信息过滤中的应用。     

A study of results overlap and uniqueness among major Web search engines

The performance and capabilities of Web search engines is an important and significant area of research. Millions of people world wide use Web search engines very day. This paper reports the results of a major study examining the overlap among results retrieved by multiple Web search engines for a large set of more than 10,000 queries. Previous smaller studies have discussed a lack of overlap in results returned by Web search engines for the same queries. The goal of the current study was to conduct a large-scale study to measure the overlap of search results on the first result page (both non-sponsored and sponsored) across the four most popular Web search engines, at specific points in time using a large number of queries. The Web search engines included in the study were MSN Search, Google, Yahoo! and Ask Jeeves. Our study then compares these results with the first page results retrieved for the same queries by the metasearch engine Dogpile.com. Two sets of randomly selected user-entered queries, one set was 10,316 queries and the other 12,570 queries, from Infospace’s Dogpile.com search engine (the first set was from Dogpile, the second was from across the Infospace Network of search properties were submitted to the four single Web search engines). Findings show that the percent of total results unique to only one of the four Web search engines was 84.9%, shared by two of the three Web search engines was 11.4%, shared by three of the Web search engines was 2.6%, and shared by all four Web search engines was 1.1%. This small degree of overlap shows the significant difference in the way major Web search engines retrieve and rank results in response to given queries. Results point to the value of metasearch engines in Web retrieval to overcome the biases of individual search engines.     

国际期刊撤销论文引证特征及其自身净化效果分析

【目的】分析Web of Science（WoS）数据库近十年撤销论文的引证特征,探究撤销行为对学术界的净化效果。【方法】分析撤销论文数量、被引频次等信息和期刊影响因子（impact factor,IF）的相关性,撤销时滞与论文被引频次的相关性;计算高被引撤销论文对IF的贡献率;评价撤销时滞对撤销前、后被引频次的影响。【结果】 76种期刊（撤销论文数量≥5篇）IF和撤销论文数量、总被引频次、撤销后被引频次、篇均被引频次相关(均为P<0.05)。撤销时滞和撤销论文总被引频次相关（P=0.000）。随撤销时滞延长,撤销前被引频次逐渐增大。高被引撤销论文对期刊IF的贡献率为0.00%～2.00%。【结论】高IF期刊发表的、撤销时滞长的撤销论文对学术界的负影响较大;肯定期刊进行自我净化效果的同时,建议科研管理部门、期刊编辑和科研人员等加强对撤销论文及其不良影响的关注。     

Measuring scientific contributions with modified fractional counting

We develop and propose a new counting method at the aggregate level for contributions to scientific publications called modified fractional counting (MFC). We show that, compared to traditional complete-normalized fractional counting, it eliminates the extreme differences in contributions over time that otherwise occur between scientists that mainly publish alone or in small groups and those that publish with large groups of co-authors. As an extra benefit we find that scientists in different areas of research turn out to have comparable average contributions to scientific articles. We test the method on scientists at Norway’s largest universities and find that, at an aggregate level, it indeed supports comparability across different co-authorship practices as well as between areas of research. MFC is thereby useful whenever the research output from institutions with different research profiles are compared, as e.g., in the Leiden Ranking. Finally, as MFC is actually a family of indicators, depending on a sensitivity parameter, it can be adapted to the circumstances.     

体育教育研究情况分析暨国际国内研究比较——基于ISIWebofScience平台及中国学术期刊网络出版平台

以Web of Science平台和中国知网的学术期刊网络出版平台为研究工具,在工具评价基础上,应用引文分析、统计等方法对1996-2010年间SCI、SSCI、A&HCI、CPCI、CAJD 所收录的体育教育方面的研究从量与趋势、期刊分布、学科分布、出版时间分布、国家分布、主要作者和核心机构几方面进行统计分析,并与国内情况做了一些比较.通过分析,反馈出该领域的国际国内领军人物、主导机构、刊物导向等,发现了我国当前研究同国际上的一些差距,希望能为该领域研究、合作与管理、成果转化等提供参考与便利,并促进研究的进一步国际化.     

我国省级公共图书馆网络影响力评价研究

图书馆网络影响力评价指标体系包括网站规模、网站流量、网站被链接量、网络用户关注度、网站利用率5个评价指标。通过灰色关联分析方法对我国29所省级公共图书馆进行网络影响力评价研究发现,省级公共图书馆的网络影响力较低,应加强图书馆网站的宣传和推广力度。     

《中国分类主题词表》Web版人物主题词的不足与改进

《中国分类主题词表》Web版人物主题词在注释、分类、中国人名英文拼写等方面存在着一系列问题。有鉴于此,本文依据相关文献,就自己的理解,谈了一点看法和改进建议。     

Web2.0技术在图书馆采编业务中的应用

网络环境对图书馆采编工作提出了改变传统模式的要求。本文论述了Web2.0技术对采编业务的影响,提出了优化创新图书馆采编业务工作的新思路。