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1.
We examined the nature and content of 150 randomly selected pornographic images available in Usenet newsgroups on the Internet in April 1994. Using content analysis, we identified themes that appear most frequently and explored differences in the type of material posted by commercial and noncommercial users. Results suggest that commercial vendors are more likely to post explicit pornographic material in public access newsgroups to attract new customers to their private, pay-per-use bulletin board services.  相似文献   

2.
This study presented an inverse chi-square based web content classification system that works along with an incremental update mechanism for incremental generation of pornographic blacklist. The proposed system, as indicated from the experimental results, can classify bilingual (English and Chinese) web pages at an average precision rate of 97.11%; while maintaining a favorably low false positive rate. Such satisfactory performance was obtained under a cost-effective parameter configuration used in inverse chi-square calculations. The proposed incremental update mechanism operates on the linking structure of pornographic hubs to locate newly added pornographic sites. The resulting blacklist has been empirically verified to be comparatively responsive to the growth dynamics of pornography sites than three public domain blacklists.  相似文献   

3.
Users of the Internet are stripped of voice inflections, body language, and other common cues of conversation-only their words are left. Some claim that the lack of these social cues and the lack of hierarchy in the structure of the Internet provide the potential for equality in cyberspace. Many others have shown, though, that the issues of power in cyberspace are similar to the issues of power in physical space. This article examines an intersection of feminism and cyberspace in the ethos of online discussion. It is a rhetorical analysis of two popular feminist newsgroups, alt.feminism and soc.feminism. Do these newsgroups create a feminist and inclusive space online? What are the rhetorical strategies that make an online space more or less inclusive of women? Usenet newsgroups reveal the rhetorical power of these bare words. Although no formal means of discrimination is built into Usenet newsgroup discussions, discrimination does occur through the subtle and not so subtle use of language. This article looks at how various characteristics of language are used on the two newsgroups. Though the ethos on such discussion forums is dynamic, the analysis reveals examples of how sarcastic questioning, strong assertions, accusatory disagreements, and sexistcomments can create a hostile and noninclusive ethos.  相似文献   

4.
Usenet is an international communications system composed of thousands of topically named discussion groups, called newsgroups, which enable anyone with an Internet connection and the proper software to read messages, post new messages, or reply to existing ones. Remarkable for its culture of 'anything-goes' free speech, Usenet tradition recognizes only one kind of legitimate restriction on content: that which is abusive to the Net's ability to function as an effective discussion system. This article shows that this consensus stems from a long and often painful struggle, as Usenet's designers, administrators, and users attempted to comprehend, define, and govern the communication system they had created. The result is a forum that is not quite as free as Usenet's defenders like to imagine, and one given to excesses that seem destined to attract the attention of government censors.  相似文献   

5.
This article examines the dynamics of centralization and decentralization of Usenet newsgroups. In doing so, it considers the similarities and differences between the organization of Usenet and the design principles for other self-organizing and self-governing common-pool resource (CPR) institutions. The rise and fall of the Backbone Cabal and the birth of the "alt" hierarchy provides insight into the early conflicts between the centralizing and decentralizing processes of Usenet. Today's procedures for group creation in the big eight hierarchies and in "alt" hierarchy and the Usenet death penalty (UDP) show that earlier tensions are still extant.  相似文献   

6.
《普罗米修斯》2012,30(2):161-170

Media studies research in the 1990s illustrated an incongruity between cultural diversity in the Australian community and the representation of that diversity on commercial television screens. Australian drama in particular received much criticism for its seemingly 'Anglo' portrayal of Australian society. Most of this former research was based on program content analysis and critical approaches to studying the media. From the mid-1990s, anecdotal evidence suggested an improvement in the casting of actors from culturally diverse backgrounds. This paper contextualises policy and industry developments in the 1990s related to cultural diversity and presents new research undertaken within the commercial television drama industry. In order to determine the status of cultural diversity and commercial television drama at the end of the 1990s, a casting survey of all Australian commercial drama programs broadcast in 1999 was carried out. This was complemented by interviews with industry personnel and a two-week content analysis of programming. The research establishes the degree of casting for actors from culturally diverse backgrounds and offers explanations for both improvements made over the previous years and the continuing obstacles faced by some groups in gaining a place in our popular drama programs.  相似文献   

7.
Electronic commerce offers immense opportunities to the producers of pornographic products and services. Although this sector generates significant revenues, it is almost invisible in academic literature on the information society and the digital economy, where it is both little discussed and undertheorized. We suggest that a social shaping of technology framework may help explain current moves by stakeholders in the industry to achieve legitimacy, and that this approach may assist future analyses of commercial dynamics in the online pornography sector.  相似文献   

8.
At a time when neoliberalism and financial austerity are together encouraging academic scientists to seek market alternatives to state funding, this essay investigates why, a century ago, their predecessors explicitly rejected private enterprise and the private ownership of ideas and inventions available to them through the patent system. The early twentieth century witnessed the success of a long campaign by British scientists to persuade the state to assume responsibility for the funding of basic research ("pure science"): their findings would enter the intellectual commons; their rewards would be primarily reputational (financial only secondarily, through consequent career advancement). The essay summarizes recent research in three separate fields of British techno-science--electricity, aviation, and agricultural botany--all of which were laying claim, at this time, to a heightened commercial or military importance that raised new questions about the ownership of scientific ideas. It suggests that each of the three established an idiosyncratic relationship with the patent system or with other forms of "intellectual property," which would both influence their emergent disciplines and affect the extent to which commercial enterprise could remain a viable funding strategy.  相似文献   

9.
With the growing focus on what is collectively known as “knowledge management”, a shift continues to take place in commercial information system development: a shift away from the well-understood data retrieval/database model, to the more complex and challenging development of commercial document/information retrieval models. While document retrieval has had a long and rich legacy of research, its impact on commercial applications has been modest. At the enterprise level most large organizations have little understanding of, or commitment to, high quality document access and management. Part of the reason for this is that we still do not have a good framework for understanding the major factors which affect the performance of large-scale corporate document retrieval systems. The thesis of this discussion is that document retrieval—specifically, access to intellectual content—is a complex process which is most strongly influenced by three factors: the size of the document collection; the type of search (exhaustive, existence or sample); and, the determinacy of document representation. Collectively, these factors can be used to provide a useful framework for, or taxonomy of, document retrieval, and highlight some of the fundamental issues facing the design and development of commercial document retrieval systems. This is the first of a series of three articles. Part II (D.C. Blair, The challenge of commercial document retrieval. Part II. A strategy for document searching based on identifiable document partitions, Information Processing and Management, 2001b, this issue) will discuss the implications of this framework for search strategy, and Part III (D.C. Blair, Some thoughts on the reported results of Text REtrieval Conference (TREC), Information Processing and Management, 2002, forthcoming) will consider the importance of the TREC results for our understanding of operating information retrieval systems.  相似文献   

10.
In the second decade of the twentieth century a new subject appeared in American high schools, aimed at providing citizens with an understanding of the essential nature of scientific thinking. "General science," as it was called, was developed and promoted by an emerging class of professional educators who sought to offer a version of science that they believed would both excite public interest and prove useful in the everyday lives of the masses of students streaming into the rapidly expanding institution of secondary education. It was to be a course with real utility that would transcend the boundaries of the specialized, abstract disciplinary subjects like chemistry and physics-subjects with identities tied to the practices and standards of the colleges and universities, which had long exerted control over the content of secondary schooling. This essay recounts the origins of general science and, in particular, examines how the intellectual and material environment of the city of Chicago at the turn of the century influenced the course that was produced and widely adopted in school programs across the United States.  相似文献   

11.
Monoclonal antibodies played a key role in the development of the biotechnology industry of the 1980s and 1990s. Investments in the sector and commercial returns have rivaled those of recombinant DNA technologies. Although the monoclonal antibody technology was first developed in Britain, the first patents were taken out by American scientists. During the first Thatcher government in Britain, blame for the missed opportunity fell on the scientists involved as well as on the National Research and Development Corporation, which had been put in place after World War II to avoid a repeat of the penicillin story, when patent rights were not sought. Instead of apportioning the blame, this essay suggests that despite past experiences and despite the new channels that were in place, Britain was not in a "patent culture" in the 1970s. It traces the long and painful process that made a commercial attitude among publicly funded British research scientists and in a civil service institution like the Medical Research Council both possible and desirable. In this process the meaning of the term "public science" also changed dramatically.  相似文献   

12.
The Web has become a worldwide source of information and a mainstream business tool. It is changing the way people conduct the daily business of their lives. As these changes are occurring, we need to understand what Web searching trends are emerging within the various global regions. What are the regional differences and trends in Web searching, if any? What is the effectiveness of Web search engines as providers of information? As part of a body of research studying these questions, we have analyzed two data sets collected from queries by mainly European users submitted to AlltheWeb.com on 6 February 2001 and 28 May 2002. AlltheWeb.com is a major and highly rated European search engine. Each data set contains approximately a million queries submitted by over 200,000 users and spans a 24-h period. This longitudinal benchmark study shows that European Web searching is evolving in certain directions. There was some decline in query length, with extremely simple queries. European search topics are broadening, with a notable percentage decline in sexual and pornographic searching. The majority of Web searchers view fewer than five Web documents, spending only seconds on a Web document. Approximately 50% of the Web documents viewed by these European users were topically relevant. We discuss the implications for Web information systems and information content providers.  相似文献   

13.
We examine engagement in commercial activities (consulting, patenting, and founding) among more than 2200 German and UK life scientists. We test hypotheses that include attributes of individuals, their material and social resources, and perceptions about values and reputation. We find that characteristics reflecting professional security, advantage and productivity are strong predictors for a greater breadth of participation in academic entrepreneurship, but not for all forms of technology transfer that we are able to test. For such academics, science and commerce go hand in hand, as they are best poised to straddle the boundary between industry and academy. We find strong support, however, that scientists perceive the value of patenting differently, and the level of reputational importance placed on scientific compared to commercial achievements matters in shaping commercial involvement.  相似文献   

14.
The essay describes the development of Hugo de Vries's thinking on heredity from the publication of his Intracellulare Pangenesis in 1889 to the publication of Die Mutations-theorie, Volume 2, in 1903. De Vries's work in the 1890s can be characterized as an attempt to defend his theory of pangenes, especially the fundamental and controversial idea that different characters have different material hereditary carriers. Hybridization experiments served his goal. Recently discovered research notes on hybridization from 1896 suggest that, though he was unaware of Mendel's work, De Vries used the laws of dominance and recessiveness, segregation, and independent assortment to explain the 75:25 ratio in the second generation. He had discovered these laws by applying insights from probability theory to his research. In Die Mutationstheorie De Vries combined central concepts of intracellular pangenesis and his mutation theory by modifying the meanings of important terms and introducing new states of pangenes. In his attempts to describe Mendelian crossings in terms of pangenes and mutations, he became entangled in a number of contradictions. Some of his remarks suggest that he was aware that the Mendelian laws and his own theories of pangenes and mutations could not be made consistent.  相似文献   

15.
This paper adopts a resource-based perspective to understand why some universities are more successful than others at generating technology-based spinoff companies. In this respect, we derive eight hypotheses that link attributes of resources and capabilities, institutional, financial, commercial and human capital, to university spinoff outcomes. Using panel data from 1980 to 2001, our econometric estimators reveal evidence of history dependence for successful technology transfer to occur although faculty quality, size and orientation of science and engineering funding and commercial capability were also found to be predictors of university spinoff activity. We conclude by drawing implications for policy makers and university heads.  相似文献   

16.
On the basis of survey responses from 507 academic biomedical researchers, we examine the impact of patents on access to the knowledge and material inputs that are used in subsequent research. We observe that access to knowledge inputs is largely unaffected by patents. Accessing other researchers’ materials and/or data, such as cell lines, reagents, or unpublished information is, however, more problematic. The main factors associated with restricted access to materials and/or data include scientific competition, the cost of providing materials, a history of commercial activity on the part of the prospective supplier, and whether the material in question is itself a drug.  相似文献   

17.
国有商业银行委托代理风险分析   总被引：4，自引：0，他引：4  
石汉祥 《中国软科学》2004,(10):36-40,58
本文主要运用委托代理理论对国有商业银行产权代理风险、上下级代理风险、银企代理风险进行了分析，指出了国有商业银行风险的成因。本文认为双重代理目标导致国有商业银行经营行为的异化、绩效评价的虚化和激励约束不足；代理层次过多导致国有商业银行代理效率损耗、内部人控制和成本外溢。本文还分析了银企信息不对称现象和预算软约束及银企双方的激励约束机制。  相似文献   

18.
侯洁贞 《科教文汇》2013,(21):120-120,122
CBI教学模式强调内容教学与语言教学的融合。在高职商务英语视听说教学中应用CBI的模式,以真实的商务活动为背景,学生既可以从语言技能课中获得商务专业知识,又可以在专业知识学习中强化语言技能,有利于应用型人才的培养。  相似文献   

19.
Critics have argued that information and communication technologies (ICTs) disconnect people from their social networks and reduce public participation. Research in support of this perspective has been biased by two assumptions. The first is a tendency to privilege the Internet as a social system removed from the other ways people communicate. The second is a tendency to favor broadly supportive strong social ties. Survey and ethnographic observations from Netville, a 2-year community networking experiment, suggest that weak, not strong ties experience growth as a result of ICTs. By examining a unique and underexplored stage in the life cycle of a community networking project, the end of a networking trial, this article demonstrates how ICTs facilitate community participation and collective action (a) by creating large, dense networks of relatively weak social ties and (b) through the use of ICTs as an organizing tool.  相似文献   

20.
Recent developments in technology have transformed the telephone from an exclusively interpersonal medium to an interactive electronic mass medium. The diffusion of innovations framework was applied to examine whether adoption of audiotext and 1–900 services is related to use of functionally similar entertainment media. Findings suggest that adoption of audio information services was more powerfully explained by media use patterns than demographics.  相似文献   

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