Diese Datenbank enthält über 40.000 Dokumente zu Themen aus den Bereichen Formalerschließung – Inhaltserschließung – Information Retrieval.
© 2015 W. Gödert, TH Köln, Institut für Informationswissenschaft / Powered by litecat, BIS Oldenburg (Stand: 04. Juni 2021)
1Leydesdorff, L. ; Bornmann, L. ; Wagner, C.S.: ¬The relative influences of government funding and international collaboration on citation impact.
In: Journal of the Association for Information Science and Technology. 70(2019) no.2, S.198-201.
Abstract: A recent publication in Nature reports that public R&D funding is only weakly correlated with the citation impact of a nation's articles as measured by the field-weighted citation index (FWCI; defined by Scopus). On the basis of the supplementary data, we up-scaled the design using Web of Science data for the decade 2003-2013 and OECD funding data for the corresponding decade assuming a 2-year delay (2001-2011). Using negative binomial regression analysis, we found very small coefficients, but the effects of international collaboration are positive and statistically significant, whereas the effects of government funding are negative, an order of magnitude smaller, and statistically nonsignificant (in two of three analyses). In other words, international collaboration improves the impact of research articles, whereas more government funding tends to have a small adverse effect when comparing OECD countries.
Inhalt: Vgl.: https://onlinelibrary.wiley.com/doi/10.1002/asi.24109.
2Leydesdorff, L. ; Wagner, C.S. ; Porto-Gomez, I. ; Comins, J.A. ; Phillips, F.: Synergy in the knowledge base of U.S. innovation systems at national, state, and regional levels : the contributions of high-tech manufacturing and knowledge-intensive services.
In: Journal of the Association for Information Science and Technology. 70(2019) no.10, S.1108-1123.
Abstract: Using information theory, we measure innovation systemness as synergy among size-classes, ZIP Codes, and technological classes (NACE-codes) for 8.5 million American companies. The synergy at the national level is decomposed at the level of states, Core-Based Statistical Areas (CBSA), and Combined Statistical Areas (CSA). We zoom in to the state of California and in more detail to Silicon Valley. Our results do not support the assumption of a national system of innovations in the U.S.A. Innovation systems appear to operate at the level of the states; the CBSA are too small, so that systemness spills across their borders. Decomposition of the sample in terms of high-tech manufacturing (HTM), medium-high-tech manufacturing (MHTM), knowledge-intensive services (KIS), and high-tech services (HTKIS) does not change this pattern, but refines it. The East Coast-New Jersey, Boston, and New York-and California are the major players, with Texas a third one in the case of HTKIS. Chicago and industrial centers in the Midwest also contribute synergy. Within California, Los Angeles contributes synergy in the sectors of manufacturing, the San Francisco area in KIS. KIS in Silicon Valley and the Bay Area-a CSA composed of seven CBSA-spill over to other regions and even globally.
Inhalt: Vgl.: https://asistdl.onlinelibrary.wiley.com/doi/10.1002/asi.24182.
3Jiang, L. ; Wagner, C.: Perceptions of justice or injustice as determinants of contributor defections from online communities.
In: Journal of the Association for Information Science and Technology. 66(2015) no.7, S.1477-1493.
Abstract: Much of the recent research on user contributions to electronic networks has focused on attracting and motivating participations. We, instead, investigate online community defections,1 their cause, and their impact through an empirical investigation of defections from Wikipedia. Our research uses justice theory to determine the effects of injustice perceptions on contributor defections and draws on fairness heuristic theory to distinguish the relative effects of distributive injustice and procedural injustice. The results show that perceptions of injustice concerning collaboration outcomes ("distributive injustice") raise contributor dissatisfaction, which in turn leads to defection. Perceptions of injustice concerning the process ("procedural injustice"), by comparison, have a direct impact on defections and exert a stronger influence on dissatisfaction than distributive injustice. Justice emerges as a hygiene factor adding to the level of dissatisfaction among dissatisfied contributors but not among satisfied contributors. The findings contribute to our understanding of collaborative knowledge creation by drawing attention to contributors' post hoc passive emotions and behaviors instead of predominantly investigating their initial prosharing behaviors. The work also has practical implications for community governance because it suggests how to sustain communities in the long term.
Inhalt: Vgl.: http://onlinelibrary.wiley.com/doi/10.1002/asi.23261/abstract.
4Bornmann, L. ; Wagner, C. ; Leydesdorff, L.: BRICS countries and scientific excellence : a bibliometric analysis of most frequently cited papers.
In: Journal of the Association for Information Science and Technology. 66(2015) no.7, S.1507-1513.
Abstract: The BRICS countries (Brazil, Russia, India, China, and South Africa) are notable for their increasing participation in science and technology. The governments of these countries have been boosting their investments in research and development to become part of the group of nations doing research at a world-class level. This study investigates the development of the BRICS countries in the domain of top-cited papers (top 10% and 1% most frequently cited papers) between 1990 and 2010. To assess the extent to which these countries have become important players at the top level, we compare the BRICS countries with the top-performing countries worldwide. As the analyses of the (annual) growth rates show, with the exception of Russia, the BRICS countries have increased their output in terms of most frequently cited papers at a higher rate than the top-cited countries worldwide. By way of additional analysis, we generate coauthorship networks among authors of highly cited papers for 4 time points to view changes in BRICS participation (1995, 2000, 2005, and 2010). Here, the results show that all BRICS countries succeeded in becoming part of this network, whereby the Chinese collaboration activities focus on the US.
Inhalt: Vgl.: http://onlinelibrary.wiley.com/doi/10.1002/asi.23333/abstract.
Land/Ort: Brasilien ; Russland ; Indien ; China ; Südafrika
5Leydesdorff, L. ; Park, H.W. ; Wagner, C.: International coauthorship relations in the Social Sciences Citation Index : is internationalization leading the Network?.
In: Journal of the Association for Information Science and Technology. 65(2014) no.10, S.2111-2126.
Abstract: International coauthorship relations have increasingly shaped another dynamic in the natural and life sciences during recent decades. However, much less is known about such internationalization in the social sciences. In this study, we analyze international and domestic coauthorship relations of all citable items in the DVD version of the Social Sciences Citation Index 2011 (SSCI). Network statistics indicate 4 groups of nations: (a) an Asian-Pacific one to which all Anglo-Saxon nations (including the United Kingdom and Ireland) are attributed, (b) a continental European one including also the Latin-American countries, (c) the Scandinavian nations, and (d) a community of African nations. Within the EU-28, 11 of the EU-15 states have dominant positions. In many respects, the network parameters are not so different from the Science Citation Index. In addition to these descriptive statistics, we address the question of the relative weights of the international versus domestic networks. An information-theoretical test is proposed at the level of organizational addresses within each nation; the results are mixed, but the international dimension is more important than the national one in the aggregated sets (as in the Science Citation Index). In some countries (e.g., France), however, the national distribution is leading more than the international one. Decomposition of the United States in terms of states shows a similarly mixed result; more U.S. states are domestically oriented in the SSCI and more internationally in the SCI. The international networks have grown during the last decades in addition to the national ones but not by replacing them.
Objekt: Social Sciences Citation Index
6Schroeder, A. ; Wagner, C.: Governance of open content creation : a conceptualization and analysis of control and guiding mechanisms in the open content domain.
In: Journal of the American Society for Information Science and Technology. 63(2012) no.10, S.1947-1959.
Abstract: The open content creation process has proven itself to be a powerful and influential way of developing text-based content, as demonstrated by the success of Wikipedia and related sites. Distributed individuals independently edit, revise, or refine content, thereby creating knowledge artifacts of considerable breadth and quality. Our study explores the mechanisms that control and guide the content creation process and develops an understanding of open content governance. The repertory grid method is employed to systematically capture the experiences of individuals involved in the open content creation process and to determine the relative importance of the diverse control and guiding mechanisms. Our findings illustrate the important control and guiding mechanisms and highlight the multifaceted nature of open content governance. A range of governance mechanisms is discussed with regard to the varied levels of formality, the different loci of authority, and the diverse interaction environments involved. Limitations and opportunities for future research are provided.
7Yates, D. ; Wagner, C. ; Majchrzak, A.: Factors affecting shapers of organizational wikis.
In: Journal of the American Society for Information Science and Technology. 61(2010) no.3, S.543-554.
Abstract: New Web 2.0 technologies such as wikis permit any organizational member of a virtual community of practice (CoP) to dynamically edit, integrate, and rewrite content (what we call knowledge shaping) as well as contribute personal knowledge. Previous research on factors that motivate contribution in virtual CoPs has focused exclusively on factors explaining why people contribute their personal knowledge, with no research focused on why people make the knowledge-shaping contributions (rewriting, integrating, and restructuring pages) which are possible with wikis. We hypothesize that factors that explain frequency of contribution will be different for those who shape from those who contribute only their personal knowledge. The results support our hypotheses. In addition, we find that shapers are not more likely to be managers or members of a community's core group who might typically serve in an administrator role, contrary to prior expectations. The implications of using Web 2.0 tools to encourage this shaping behavior are discussed.
Objekt: Web 2.0 ; Wiki
8Du, H. ; Hao, J.-X.. ; Kwok, R. ; Wagner, C.: Can a lean medium enhance large-group communication? : Examining the impact of interactive mobile learning.
In: Journal of the American Society for Information Science and Technology. 61(2010) no.10, S.2122-2137.
Abstract: This research empirically evaluated the use of mobile information and communication technology in a large-sized undergraduate class, where the effectiveness of multilearner participation and prompt learner-instructor interaction is often challenged. The authors analyzed the effectiveness of a so-called "lean" communication medium using hand-held mobile devices, whose brief text-based messages considerably limit the speed of information exchange. Adopting a social construction perspective of media richness theory and a reinforced approach to learning and practice, the authors conjectured that an interactive learning system built with wireless PDA devices can enhance individual practices and reinforce peer influences. Consequently, they expected better understanding and higher satisfaction among learners. A field experiment with 118 participants in the treatment and 114 participants in the control group supported their hypotheses. Their results suggested that richness of a "lean" medium could be increased in certain socially constructed conditions, thus extending existing notions of computer-aided instruction towards a techno-social learning model.