Search (476 results, page 1 of 24)

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Abstract

Will the emerging global information infrastructure (GII) create a revolution in communication equivalent to that wrought by Gutenberg, or will the result be simply the evolutionary adaptation of existing behavior and institutions to new media? Will the GII improve access to information for all? Will it replace libraries and publishers? How can computers and information systems be made easier to use? What are the trade-offs between tailoring information systems to user communities and standardizing them to interconnect with systems designed for other communities, cultures, and languages? This book takes a close look at these and other questions of technology, behavior, and policy surrounding the GII. Topics covered include the design and use of digital libraries; behavioral and institutional aspects of electronic publishing; the evolving role of libraries; the life cycle of creating, using, and seeking information; and the adoption and adaptation of information technologies. The book takes a human-centered perspective, focusing on how well the GII fits into the daily lives of the people it is supposed to benefit. Taking a unique holistic approach to information access, the book draws on research and practice in computer science, communications, library and information science, information policy, business, economics, law, political science, sociology, history, education, and archival and museum studies. It explores both domestic and international issues. The author's own empirical research is complemented by extensive literature reviews and analyses

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Abstract

How do authors refer to Web-based information sources in their formal scientific publications? It is not yet weIl known how scientists and scholars actually include new types of information sources, available through the new media, in their published work. This article reports an a comparative study of the lists of references in 38 scientific journals in five different scientific and social scientific fields. The fields are sociology, library and information science, biochemistry and biotechnology, neuroscience, and the mathematics of computing. As is weIl known, references, citations, and hyperlinks play different roles in academic publishing and communication. Our study focuses an hyperlinks as attributes of references in formal scholarly publications. The study developed and applied a method to analyze the differential roles of publishing media in the analysis of scientific and scholarly literature references. The present secondary databases that include reference and citation data (the Web of Science) cannot be used for this type of research. By the automated processing and analysis of the full text of scientific and scholarly articles, we were able to extract the references and hyperlinks contained in these references in relation to other features of the scientific and scholarly literature. Our findings show that hyperlinking references are indeed, as expected, abundantly present in the formal literature. They also tend to cite more recent literature than the average reference. The large majority of the references are to Web instances of traditional scientific journals. Other types of Web-based information sources are less weIl represented in the lists of references, except in the case of pure e-journals. We conclude that this can be explained by taking the role of the publisher into account. Indeed, it seems that the shift from print-based to electronic publishing has created new roles for the publisher. By shaping the way scientific references are hyperlinking to other information sources, the publisher may have a large impact an the availability of scientific and scholarly information.

Source

Journal of the American Society for Information Science and Technology. 55(2004) no.14, S.1250-1260

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Abstract

Rogers presents a profoundly different way of thinking about information in cyberspace, one that supports the political efforts of democratic activists and NGOs and takes seriously the epistemological issues at the heart of networked communications.

Footnote

Rez. in: JASIST 58(2007) no.4, S.608-609 (K.D. Desouza): "Richard Rogers explores the distinctiveness of the World Wide Web as a politically contested space where information searchers may encounter multiple explanations of reality. Sources of information on the Web are in constant competition with each other for attention. The attention a source receives will determine its prominence, the ability to be a provider of leading information, and its inclusion in authoritative spaces. Rogers explores the politics behind evaluating sources that are collected and housed on authoritative spaces. Information politics on the Web can be looked at in terms of frontend or back-end politics. Front-end politics is concerned with whether sources on the Web pay attention to principles of inclusivity, fairness, and scope of representation in how information is presented, while back-end politics examines the logic behind how search engines or portals select and index information. Concerning front-end politics, Rogers questions the various versions of reality one can derive from examining information on the Web, especially when issues of information inclusivity and scope of representation are toiled with. In addition, Rogers is concerned with how back-end politics are being controlled by dominant forces of the market (i.e., the more an organization is willing to pay, the greater will be the site's visibility and prominence in authoritative spaces), regardless of whether the information presented on the site justifies such a placement. In the book, Rogers illustrates the issues involved in back-end and front-end politics (though heavily slanted on front-end politics) using vivid cases, all of which are derived from his own research. The main thrust is the exploration of how various "information instruments," defined as "a digital and analytical means of recording (capturing) and subsequently reading indications of states of defined information streams (p. 19)," help capture the politics of the Web. Rogers employs four specific instruments (Lay Decision Support System, Issue Barometer, Web Issue Index of Civil Society, and Election Issue Tracker), which are covered in detail in core chapters of the book (Chapter 2-Chapter 5). The book is comprised of six chapters, with Chapter 1 being the traditional introduction and Chapter 6 being a summary of the major concepts discussed.
Chapter 2 examines the politics of information retrieval in the context of collaborative filtering techniques. Rogers begins by discussing the underpinnings of modern search engine design by examining medieval practices of knowledge seeking, following up with a critique of the collaborative filtering techniques. Rogers's major contention is that collaborative filtering rids us of user idiosyncrasies as search query strings, preferences, and recommendations are shared among users and without much care for the differences among them, both in terms of their innate characteristics and also their search goals. To illustrate Rogers' critiques of collaborative filtering, he describes an information searching experiment that he conducted with students at University of Vienna and University of Amsterdam. Students were asked to search for information on Viagra. As one can imagine, depending on a number of issues, not the least of which is what sources did one extract information from, a student would find different accounts of reality about Viagra, everything from a medical drug to a black-market drug ideal for underground trade. Rogers described how information on the Web differed from official accounts for certain events. The information on the Web served as an alternative reality. Chapter 3 describes the Web as a dynamic debate-mapping tool, a political instrument. Rogers introduces the "Issue Barometer," an information instrument that measures the social pressure on a topic being debated by analyzing data available from the Web. Measures used by the Issue Barometer include temperature of the issue (cold to hot), activity level of the debate (mild to intense), and territorialization (one country to many countries). The Issues Barometer is applied to an illustrative case of the public debate surrounding food safety in the Netherlands in 2001. Chapter 4 introduces "The Web Issue Index," which provides an indication of leading societal issues discussed on the Web. The empirical research on the Web Issues Index was conducted on the Genoa G8 Summit in 1999 and the anti-globalization movement. Rogers focus here was to examine the changing nature of prominent issues over time, i.e., how issues gained and lost attention and traction over time.
In Chapter 5, the "Election Issue Tracker" is introduced. The Election Issue Tracker calculates currency that is defined as "frequency of mentions of the issue terms per newspaper and across newspapers" in the three major national newspapers. The Election Issue Tracker is used to study which issues resonate with the press and which do not. As one would expect, Rogers found that not all issues that are considered important or central to a political party resonate with the press. This book contains a wealth of information that can be accessed by both researcher and practitioner. Even more interesting is the fact that researchers from a wide assortment of disciplines, from political science to information science and even communication studies, will appreciate the research and insights put forth by Rogers. Concepts presented in each chapter are thoroughly described using a wide variety of cases. Albeit all the cases are of a European flavor, mainly Dutch, they are interesting and thought-provoking. I found the descriptions of Rogers various information instruments to be very interesting. Researchers can gain from an examination of these instruments as it points to an interesting method for studying activities and behaviors on the Internet. In addition, each chapter has adequate illustrations and the bibliography is comprehensive. This book will make for an ideal supplementary text for graduate courses in information science, communication and media studies, and even political science. Like all books, however, this book had its share of shortcomings. While I was able to appreciate the content of the book, and certainly commend Rogers for studying an issue of immense significance, I found the book to be very difficult to read and parse through. The book is laden with jargon, political statements, and even has several instances of deficient writing. The book also lacked a sense of structure, and this affected the presentation of Rogers' material. I would have also hoped to see some recommendations by Rogers in terms of how should researchers further the ideas he has put forth. Areas of future research, methods for studying future problems, and even insights on what the future might hold for information politics were not given enough attention in the book; in my opinion, this was a major shortcoming. Overall, I commend Rogers for putting forth a very informative book on the issues of information politics on the Web. Information politics, especially when delivered on the communication technologies such as the Web, is going to play a vital role in our societies for a long time to come. Debates will range from the politics of how information is searched for and displayed on the Web to how the Web is used to manipulate or politicize information to meet the agendas of various entities. Richard Rogers' book will be of the seminal and foundational readings on the topic for any curious minds that want to explore these issues."

LCSH

Knowledge, Sociology of

Subject

Knowledge, Sociology of

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Footnote

Rez. in: JASIST 57(2006) no.5, S.724-725 (P.K. Nayar): "The network society (Castells, 1996) calls for radically new definitions of the public sphere. and this is what Shaping the Network Society's essays set out to do. The first section lays out the essential issues at stake here: human rights, the sociology of cyberspace. and globalization. Oliver BoydBarrett characterizes cyberspace as exclusive. Pointing to the almost total corporate control of the technologies of cyberspace. Boyd-Barrett argues that any attempt of huge corporate bodies to get into grassroots democracy should be viewed with suspicion. The institution of a public sphere. argues Boyd-Barrett, must begin with an assessment of how far the Internet at fords a space of contestation of elitist governing frameworks. Gary Chapman looks at Italy's slow food movement as a counter to the technoglobalist trends, and suggests that the globaltechnological imperative must not be allowed to occlude human values. Rather we need a social imperative here. one which thinks about technology as "malleable, as capable of serving human-determined ends" (p. 64). Cees Hamelink discusses how four rights-right to speech. democratic order, equal participation in social life. and cultural identity are threatened by what he terms the billboardization of society in the networked age. In the second section a range of case studies are presented. Kate Williams and Abdul Alkalimat survey every public computing facility in Toledo (Ohio) to map the parameters of public access to information and decision-making. They conclude that government public computing sites arc situated randomly, community sites are in economically rich or poor (but not middle-stratum) localities, and that commercial and university sites are influenced by market forces. They suggest that future research must necessarily focus on what forms of cyberpower emerge through such use of public computing.
Geert Lovnik and Patrice Riemens explore the digital culture of Amsterdam to show how. despite the techno-social idealism of the early years of the public sphere Digital City project. the culture ran into problems. Susan Finquelievich studies the practices of civic networks in Buenos Aires and Montevideo to demonstrate how local sociohistorical conditions have shaped the technology's development. Veran Matic focuses on the role of media in defending human rights in a hostile environment (former Yugoslavia). Media, she notes, need not necessarily he (or become) a tool of fascist forces, but can he used to generate resistance and to forge a democratic public sphere. Scott Robinson looks at Mexico's telecenter movement to argue that these cybercafes are likely to become an institution for the new Second World of immigrants and refugees. through socially relevant functions. Fiorella de Cindio looks at one of the worlds most significant community networks that of Milan. She demonstrates how local citizens have used information and communication technologies to build a viable. and potentially empowering, participatory public sphere in academia, computer-supported cooperative work, participatory design, and civil engagement (what she calls genes). The third section, -'Building a New Public Sphere in Cyberspace," pros- ides a series of suggestions and frameworks for the spacing of public space through information and communications technologies. Craig Calhoun argues that a global public sphere is indispensable to the formation of a global democracy. Public discourse can still fight commercialism and violence to form a more democratic civil society. Howard Rheingold the great enthusiast of virtual worlds-performs an intricate mix of autobiographical reflection and speculation when he writes of the role of the new technologies. Rheingold, despite his fetishistic enthusiasm for technology and online community, is cautious when it comes to crucial issues such as the creation of democratic public spheres, arguing that we require a great deal more serious thinking on matters of ownership and control (over the technology). He argues that if citizens lose our freedom to communicate, then even the powerful potential of the Net to create electronic democracy will be fatal illusion (p. 275). Nancy Kranich turns to public libraries as the site of potential democratic society, arguing that as sites of informationdissemination. public libraries can become a commons for the exchange of ideas and social interaction. David Silver compares the Blacksburg Electronic Village (BEV) to the Seattle Community Network the former funded by corporations and the state, the latter built essentially out of and through volunteer efforts. Silver, in characteristic style. looks at the historical archaeologies of the networks to show how sociohistorical contexts shape certain kinds of public spheres (and public discourse). going on to ask how, these networks can overcome these contexts to achieve their original goals. He warns that we need to uncover the histories of such networks because they inform the kinds of interactions of communities that exist within them. Douglas Morris analyzes the Independent Media Centre (IMO) Movement of antiglobalization activists to argue that alternative viewpoints and ideological differences can he aired, debated, and appropriated through the new technologies in order to fight corporate and commercial forces.
Peter Day and Douglas Schuler wind up the book by taking a close look at the sociotechnical context in the 1990s. They argue that utopian schemes for the development of civil society and/or the public sphere may entail a degree of risk. However. Day and Schuler argue that community networks should be ''networks of awareness. advocacy and action" with a high degree of grassroots involvement. This can be done through more responsive policies. Local citizens-the first beneficiaries or victims of policy-should he brought into the decision-making process via civic dialogue. Public funding must be provided for projects that enable dissemination of information about a variety of cultures and belief systems. Shaping the Network Society is understandably more cautious than earlier accounts of cyberculture in its reception of new information and communications technology. Haunted by post 9/11 security measures. increasing surveillance, the faster erosion of liberal humanist ideals, and the internationalization/ commercialization of the media, the essays prefer to be wary about the potential of cyberpower. However, the optimist tone of every essay is unmistakable. While admitting that much more needs to be done to overcome the digital divide and the (mis)appropriation of cyberpower. the essays and ease studies draw attention to the potential for public debate and alternative ideologies. The case studies demonstrate success stories, but invariably conclude with a moral: about the need for vigilance against appropriation and fascist control! What emerges clearly is that the new media have achieved considerable progress in opening up the space for greater citizen involvement, more locally-responsive policy decisions. and socially relevant information-dissemination. Shaping the Network Society, with a strangely messianic slant, is a useful step in the mapping of the present and future cyberspace as the space of new democracies to come of a justice to he worked and prepared for."

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Source

Bulletin of the American Society for Information Science. 26(2000), no.6, Aug/Sept, S.22-25

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Date

7.10.2002 9:22:14

Footnote

Teil eines Themenheftes: OCLC and the Internet: An Historical Overview of Research Activities, 1990-1999 - Part II

Source

Journal of library administration. 34(2001) nos.3/4, S.407-419

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Abstract

Will traditional forms of communication seamlessly migrate to the Web? Liew, Foo, and Chennupati report that the top-ranked features of e-journals are those not available in paper journals: querying, navigation, and visualization.

Source

Journal of the American Society for Information Science and technology. 52(2001) no.1, S.22-35

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Abstract

In recent years, many evaluations of Web sites have been conducted, and relevant researches have also been carried out in academic circles. Correspondence analysis is introduced in this paper to evaluate university library Web sites through building a correspondence analysis model. This paper gives suggestions as to how to construct university library Web sites based on analysis and summary of evaluation results, in a bid to strengthen the construction of university library Web sites.

Date

22. 7.2006 16:40:18

Source

Journal of the American Society for Information Science and Technology. 57(2006) no.4, S.493-500

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Abstract

Technological developments have changed the concepts of publication, reproduction and distribution. However, legislation, and in particular the Legal Deposit Law has not adjusted to these changes - it is very restrictive in the sense of protecting the rights of authors of electronic publications. National libraries and national archival institutions, being aware of their important role in preserving the written and spoken cultural heritage, try to find different legal ways to live up to these responsibilities. This paper presents some legal aspects of archiving Web pages, examines the harvesting of Web pages, provision of public access to pages, and their long-term preservation.

Date

10.12.2005 11:22:13

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Abstract

The importance of trust in building and maintaining consumer relationships in the online environment is widely accepted in the Information Systems literature. A key challenge for researchers is to identify antecedent variables that engender consumer trust in Internet shopping. This paper adopts a multidisciplinary approach and develops an integrative model of consumer trust in Internet shopping through synthesizing the three diverse trust literatures. The social psychological perspective guides us to include perceived trustworthiness of Internet merchants as the key determinant of consumer trust in Internet shopping. The sociological viewpoint suggests the inclusion of legal framework and third-party recognition in the research model. The views of personality theorists postulate a direct effect of propensity to trust on consumer trust in Internet shopping. The results of this study provide strong support for the research model and research hypotheses, and the high explanatory power illustrates the complementarity of the three streams of research on trust. This paper contributes to the conceptual and empirical understanding of consumer trust in Internet shopping. Implications of this study are noteworthy for both researchers and practitioners.

Date

22. 7.2006 17:06:10

Source

Journal of the American Society for Information Science and Technology. 57(2006) no.4, S.479-492

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Abstract

The U.S. federal government has been a major publisher on the Internet. Its many agencies have used the Internet, and the Web most recently, to provide access to a great quantity of their information output. Several agencies such as the Library of Congress and the Government Printing Office have taken a leading role in both providing information and offering finding aids, while other endeavors such as FirstGov and subject gateways offer other avenues of access. A brief look back at the history of the government on the Web and the continuing concerns and challenges show how the government is not only a major content provider on the Internet but also a source for the organization of the content.

Date

15. 2.2007 19:05:22

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Abstract

In this research, we aim to identify factors that significantly affect the clickthrough of Web searchers. Our underlying goal is determine more efficient methods to optimize the clickthrough rate. We devise a clickthrough metric for measuring customer satisfaction of search engine results using the number of links visited, number of queries a user submits, and rank of clicked links. We use a neural network to detect the significant influence of searching characteristics on future user clickthrough. Our results show that high occurrences of query reformulation, lengthy searching duration, longer query length, and the higher ranking of prior clicked links correlate positively with future clickthrough. We provide recommendations for leveraging these findings for improving the performance of search engine retrieval and result ranking, along with implications for search engine marketing.

Date

22. 3.2009 17:49:11

Source

Journal of the American Society for Information Science and Technology. 60(2009) no.3, S.557-570

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Abstract

When we were all facing the turn of the century and the somewhat larger turn of the millennium, we left behind epochs of colonialism, imperialism, capitalism, nazism and racialism. Not that the ideologies mentioned does no longer exist, but their impact as grand narratives has gone and they now exist as fragmented discursive parts of their former, illusive hegemony. Parts that have been thrown into the pits of post modern complexity. The 21st century holds no answers, no new meaning, at most it provides human communication a certain self reflectivity due to the increasing egocentrism and individuality of people (i.e. still mostly western people). Another symptom of the loss of grand narratives is a feeling of loss of meaning in everyday life, as well as the state of democracies around the world. Democracy shivers in its void between anarchy and repressive dictatorship. The description 'information age' provides the times we are in with a useful sticker. It tents both back in time e.g. the late 20, century digitalisation and forward in time by givingr origin to the contemporary discourse of social semantics i.e. Dream society, Knowledge society, Post modern society, Risk society, Hypercomplex society etc. The phrase 'information age' implied the introduction of a paradigm shift, and now it is still here showing that paradigms do not shift, they slide. This paper outlines a manifest for librarians and librarianship of the information age. The information age puts the spotlight on the librarian, both regarding classical tasks such as classification and cataloguing as well as new tasks such as systems analysis and design or database searching.
Complexity establishes a paradox between the tasks of preserving old knowledge (memory function) and facilitate cognitive dissonance in order to challenge established knowledge claims and create new knowledge (catalyser function). Through complexity all social systems organisations, discourse communities, ideologies) face an environment (or surrounding) that is characterised through its instability and contingency. What is real, or presumable real from one point of view can appear completely different from another point of view. Different discourses of meaning and significance float, blend and separates themselves form each other the arena of communication. The library has to both keep record of what has happened, as well as take part in the ongoing battles for new discursive hegemonies. The unity of the paradox of memory and catalysing is described as managing complexity and requires a conscious and constant oscillation between order and chaos, stability and change. The role of the librarian is defined through an analysis of contemporary social semantics as well as the technical, ethical, cultural and epistemological challenges facing us as librarians and information specialists.

Date

22. 7.2009 11:23:22

Source

Librarianship in the information age: Proceedings of the 13th BOBCATSSS Symposium, 31 January - 2 February 2005 in Budapest, Hungary. Eds.: Marte Langeland u.a

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Abstract

While many catalogers are using the Web to find the information they need to perform authority work quickly and accurately, the full potential of the Web to assist catalogers in name authority work has yet to be realized. The ever-growing nature of the Web means that available information for creating personal name, corporate name, and other types of headings will increase. In this article, we examine ways in which simple and effective Web searching can save catalogers time and money in the process of authority work. In addition, questions involving evaluating authority information found on the Web are explored.

Date

10. 9.2000 17:38:22

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Abstract

Purpose - The "photosharing" site Flickr is one of the most commonly cited examples used to define Web2.0. This paper aims to explore where Flickr's real novelty lies, examining its functionality and its place in the world of amateur photography. Several optimistic views of the impact of Flickr such as its facilitation of citizen journalism, "vernacular creativity" and in learning as an "affinity space" are evaluated. Design/methodology/approach - The paper draws on a wide range of sources including published interviews with its developers, user opinions expressed in forums, telephone interviews and content analysis of user profiles and activity. Findings - Flickr's development path passes from an innovative social game to a relatively familiar model of a web site, itself developed through intense user participation but later stabilising with the reassertion of a commercial relationship to the membership. The broader context of the impact of Flickr is examined by looking at the institutions of amateur photography and particularly the code of pictorialism promoted by the clubs and industry during the twentieth century. The nature of Flickr as a benign space is premised on the way the democratic potential of photography is controlled by such institutions. The limits of optimistic claims about Flickr are identified in the way that the system is designed to satisfy commercial purposes, continuing digital divides in access and the low interactivity and criticality on Flickr. Originality/value - Flickr is an interesting source of change, but can only be understood in the perspective of long-term development of the hobby and wider social processes. By setting Flickr in such a broad context, its significance and that of Web2.0 more generally can be fully assessed.

Date

30.12.2008 19:38:22

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Abstract

While the Web has grown significantly in recent years, some portions of the Web remain largely underdeveloped, as shown in a lack of high-quality content and functionality. An example is the Arabic Web, in which a lack of well-structured Web directories limits users' ability to browse for Arabic resources. In this research, we proposed an approach to building Web directories for the underdeveloped Web and developed a proof-of-concept prototype called the Arabic Medical Web Directory (AMedDir) that supports browsing of over 5,000 Arabic medical Web sites and pages organized in a hierarchical structure. We conducted an experiment involving Arab participants and found that the AMedDir significantly outperformed two benchmark Arabic Web directories in terms of browsing effectiveness, efficiency, information quality, and user satisfaction. Participants expressed strong preference for the AMedDir and provided many positive comments. This research thus contributes to developing a useful Web directory for organizing the information in the Arabic medical domain and to a better understanding of how to support browsing on the underdeveloped Web.

Date

22. 3.2009 17:57:50

Source

Journal of the American Society for Information Science and Technology. 60(2009) no.3, S.595-607

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Abstract

This article focuses on the process of scientific and scholarly communication. Data on open access publications on the Internet not only provides a supplement to the traditional citation indexes but also enables analysis of the microprocesses and daily practices that constitute scientific communication. This article focuses on a stage in the life cycle of scientific and scholarly information that precedes the publication of formal research articles in the scientific and scholarly literature. Binomial logistic regression models are used to analyse precise mechanisms at work in the transformation of a working paper (WP) into a journal article (JA) in the field of economics. The study unveils a fine-grained process of adapting WPs to their new context as JAs by deleting and adding literature references, which perhaps can be best captured by the term sculpting.

Date

22. 3.2009 18:59:25

Source

Journal of the American Society for Information Science and Technology. 60(2009) no.4, S.728-739

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Abstract

This study investigated Simon's behavioral decisionmaking theories of bounded rationality and satisficing in relation to young people's decision making in the World Wide Web, and considered the role of personal preferences in Web-based decisions. It employed a qualitative research methodology involving group interviews with 22 adolescent females. Data analysis took the form of iterative pattern coding using QSR NUD*IST Vivo qualitative data analysis software. Data analysis revealed that the study participants did operate within the limits of bounded rationality. These limits took the form of time constraints, information overload, and physical constraints. Data analysis also uncovered two major satisficing behaviors-reduction and termination. Personal preference was found to play a major role in Web site evaluation in the areas of graphic/multimedia and subject content preferences. This study has related implications for Web site designers and for adult intermediaries who work with young people and the Web

Source

Journal of the American Society for Information Science and technology. 53(2002) no.1, S.16-27

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Abstract

Google News and other newsbots have automated the process of news selection, providing Internet users with a virtually limitless array of news and public information dynamically culled from thousands of news organizations all over the world. In order to help users cope with the resultant overload of information, news leads are typically accompanied by three cues: (a) the name of the primary source from which the headline and lead were borrowed, (b) the time elapsed since the story broke, and (c) the number of related articles written about this story by other news organizations tracked by the newsbot. This article investigates the psychological significance of these cues by positing that the information scent transmitted by each cue triggers a distinct heuristic (mental shortcut) that tends to influence online users' perceptions of a given news item, with implications for their assessment of the item's relevance to their information needs and interests. A large 2 x 3 x 6 withinsubjects online experiment (N = 523) systematically varied two levels of the source credibility cue, three levels of the upload recency cue and six levels of the number-ofrelated-articles cue in an effort to investigate their effects upon perceived message credibility, newsworthiness, and likelihood of clicking on the news lead. Results showed evidence for source primacy effect, and some indication of a cue-cumulation effect when source credibility is low. Findings are discussed in the context of machine and bandwagon heuristics.

Date

7. 3.2007 16:22:24

Source

Journal of the American Society for Information Science and Technology. 58(2007) no.3, S.366-378

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Abstract

Social networks evolve over time with the addition and removal of nodes and links to survive and thrive in their environments. Previous studies have shown that the link-formation process in such networks is influenced by a set of facilitators. However, there have been few empirical evaluations to determine the important facilitators. In a research partnership with law enforcement agencies, we used dynamic social-network analysis methods to examine several plausible facilitators of co-offending relationships in a large-scale narcotics network consisting of individuals and vehicles. Multivariate Cox regression and a two-proportion z-test on cyclic and focal closures of the network showed that mutual acquaintance and vehicle affiliations were significant facilitators for the network under study. We also found that homophily with respect to age, race, and gender were not good predictors of future link formation in these networks. Moreover, we examined the social causes and policy implications for the significance and insignificance of various facilitators including common jails on future co-offending. These findings provide important insights into the link-formation processes and the resilience of social networks. In addition, they can be used to aid in the prediction of future links. The methods described can also help in understanding the driving forces behind the formation and evolution of social networks facilitated by mobile and Web technologies.

Date

22. 3.2009 18:50:30

Source

Journal of the American Society for Information Science and Technology. 60(2009) no.4, S.655-665