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We evaluate author impact indicators and ranking algorithms on two publication databases using large test data sets of well-established researchers. The test data consists of (1) ACM fellowship and (2) various life-time achievement awards. We also evaluate different approaches of dividing credit of papers among co-authors and analyse the impact of self-citations. Furthermore, we evaluate different graph normalisation approaches for when PageRank is computed on author citation graphs.We find that PageRank outperforms citation counts in identifying well-established researchers. This holds true when PageRank is computed on author citation graphs but also when PageRank is computed on paper graphs and paper scores are divided among co-authors. In general, the best results are obtained when co-authors receive an equal share of a paper's score, independent of which impact indicator is used to compute paper scores. The results also show that removing author self-citations improves the results of most ranking metrics. Lastly, we find that it is more important to personalise the PageRank algorithm appropriately on the paper level than deciding whether to include or exclude self-citations. However, on the author level, we find that author graph normalisation is more important than personalisation. 相似文献
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The clinical use of motivational messages: an inquiry into the validity of the ARCS model of motivational design 总被引:2,自引:0,他引:2
Instruction, even when prepared according to sound instructional design principles, often does not stimulate students' motivation to learn. A motivational intervention, developed according to the processes outlined inthe ARCS model of motivational design, was implemented and tested following the conventions of an embedded single-case study. It was tested with a group of 15 adults participating in a staff development course conducted within the Mozambique Ministry of Education. Results, based on concurrent and discriminant analysis of both quantitative and qualitative data, indicated that the primary treatment, motivational messages, had positive effects on student attitude and performance. It may be concluded that the specific intervention and the ARCS model which provided the basis for designing it provide a sound basis for positively influencing student motivation to learn. 相似文献
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James A. Visser 《The American journal of distance education》2013,27(3):21-32
Abstract Using an experiential case approach, this study explores the conventional wisdom that distance education courses require greater faculty work effort and time commitment than traditionally taught courses. The study's basis for analysis is an instructor's time and effort in developing and delivering a graduate‐level course in public administration, for both a distance course (a modality with which he had no previous experience) and his traditional classroom courses. The study finds support for the conventional wisdom. But it also suggests hypotheses for future comparative analysis that development and delivery time and effort may partially depend on the accumulation of instructor experience and the level of institutional support. This article also identifies some implications for future research and faculty participation in distance education. 相似文献
6.
Heleen A. Van der Stege Sander R. Hilberink Adriaan P. Visser AnneLoes Van Staa 《Sex education》2014,14(6):635-651
The objective of this study was to identify determinants of professionals’ intention to use the new board game SeCZ TaLK to facilitate sexual health discussions with young people with chronic health conditions and disabilities, and to gauge whether intention led to actual use. A cross-sectional web-based survey of 336 professionals before they received the game sought to measure their intention to use SeCZ TaLK, their attitudes towards discussing sexuality, social professional environment, self-efficacy, opinion on the feasibility of using the game and experience discussing sexuality. Actual use of SeCZ TaLK was assessed at follow-up (N = 105). Professionals with higher self-efficacy and more experience in discussing sexual health were more likely to intend to use the game. At follow-up, intention to use explained 21% of the variance in actual use. SeCZ TaLK fits easily into the daily practice of professionals working in assisted-living and day-care facilities; other professionals experienced greater difficulty integrating the game into their practice. Despite this, SeCZ TaLk was also used across a wide range of settings including in psycho-educational groups, group consultations in hospitals and group therapy in rehabilitation centres. Professionals appreciated the board game SeCZ TaLK, but actual use depended on their own motivation and skills and compatibility with work routines. 相似文献
7.
Anthony F.J. van Raan Thed N. van Leeuwen Martijn S. Visser Nees Jan van Eck Ludo Waltman 《Journal of Informetrics》2010,4(3):431-435
We reply to the criticism of Opthof and Leydesdorff on the way in which our institute applies journal and field normalizations to citation counts. We point out why we believe most of the criticism is unjustified, but we also indicate where we think Opthof and Leydesdorff raise a valid point. 相似文献
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Max Visser 《Learning Inquiry》2008,2(2):127-137
To survive in and adapt to dynamic, turbulent, and complex environments, organizations need to engage in learning. This truism is particularly relevant for army organizations in times of war and armed conflict. In this article a case of army operations during World War II is analyzed on the basis of ?rtenblad’s integrated model of the learning organization and Argyris and Schön’s theory of action approach. Among others, it is found that survival of and adaptation to combat conditions is possible through single-loop learning, provided that this learning takes place in an open and productive learning climate. This and other conclusions have important implications for theory and practice of organizational learning under conditions of hierarchy and discipline. 相似文献
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Barreto Lucas Passos Rodrigues Adriana Araújo Dutra de Oliveira Giordanna Camilla Bié de Almeida Laila Thayanne Gomes Felix Matheus Augusto Campelo Silva Penha de Souza Quadros Ana Luiza Macedo Andrea Mara Mortimer Eduardo Fleury 《Research in Science Education》2021,51(1):135-152
Research in Science Education - This research draws on Legitimation Code Theory (LCT) to understand the epistemic dimension of the higher education classroom discourse of a professor who is well... 相似文献
10.
This paper examines the propensity to attain a Ph.D. degree at the five largest universities in Flanders, the Dutch speaking
part of Belgium. It provides insight into the rate at which junior scholars appointed at the universities involved attained
their Ph.D.-degree, and the duration of the doctoral training period. Cox’s regression model was applied to statistically
analyse the influence of a number of ‘demographic’ and ‘merit’ variables, and variables related to funding source and type
of appointment of the junior scholarly staff. Large differences in Ph.D. durations and attainment rates were found across
funding sources, research disciplines and types of appointments. The policy background and implications are discussed briefly. 相似文献