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Zuckerman: Scientist Extraordinary by Bernard Donovan BioScientifica, Bristol, 2005, 555pp. ISBN 1‐901978249 £24.95 Negotiating licences for digital resources by Fiona Durrant Facet Publishing, 2006, ISBN 1 85604 586 2 Metadata for Information Management and Retrieval By David Haynes Facet Publishing, 2004, ISBN 1 85604 4890 相似文献
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Debasis?GangulyEmail authorView authors OrcID profile Gareth?J.?F.?Jones Aarón?Ramírez-de-la-Cruz Gabriela?Ramírez-de-la-Rosa Esaú?Villatoro-Tello 《Information Retrieval》2018,21(1):1-23
Automatic detection of source code plagiarism is an important research field for both the commercial software industry and within the research community. Existing methods of plagiarism detection primarily involve exhaustive pairwise document comparison, which does not scale well for large software collections. To achieve scalability, we approach the problem from an information retrieval (IR) perspective. We retrieve a ranked list of candidate documents in response to a pseudo-query representation constructed from each source code document in the collection. The challenge in source code document retrieval is that the standard bag-of-words (BoW) representation model for such documents is likely to result in many false positives being retrieved, because of the use of identical programming language specific constructs and keywords. To address this problem, we make use of an abstract syntax tree (AST) representation of the source code documents. While the IR approach is efficient, it is essentially unsupervised in nature. To further improve its effectiveness, we apply a supervised classifier (pre-trained with features extracted from sample plagiarized source code pairs) on the top ranked retrieved documents. We report experiments on the SOCO-2014 dataset comprising 12K Java source files with almost 1M lines of code. Our experiments confirm that the AST based approach produces significantly better retrieval effectiveness than a standard BoW representation, i.e., the AST based approach is able to identify a higher number of plagiarized source code documents at top ranks in response to a query source code document. The supervised classifier, trained on features extracted from sample plagiarized source code pairs, is shown to effectively filter and thus further improve the ranked list of retrieved candidate plagiarized documents. 相似文献
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Bernadette Robinson 《Distance Education》1999,20(2):181-204
The use of open and distance learning for non‐formal education is much less canvassed in the literature than for formal education. This paper provides a case study, grounded in practice, of the first open and distance learning for non‐formal education in Mongolia, a developing country undergoing rapid transition in the 1990s from a command to a market economy and from communism to a multi‐party democracy. The paper outlines the project and its context, explains the rationale for it, and analyses its achievements, limitations and lessons. It also identifies the additional problems for Open and Distance Education (ODE) in a context of rapid economic transition. 相似文献
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Gerardo Blanco Ramírez 《International journal of qualitative studies in education》2016,29(2):186-204
Amidst global competition in higher education, colleges and universities adopt strategies that mimic and adapt business practices. Branding is now a widespread practice in higher education; multimodal advertisement is a manifestation of emerging branding strategies for universities. While the visibility of brands in higher education has grown substantially in recent years, its empirical study has lagged. This article reports on the findings from a study that employed social semiotic and multimodal analysis to explore text and visual rhetoric as brand construction strategies in publicly displayed university advertisements. After analyzing photographs representing advertising campaigns from 16 different universities displayed in an urban public transportation system, I suggest that universities construct their brand identity through messages that emphasize multiple choices and convenience, but construct success primarily according to corporate standards and values. 相似文献
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How Exemplar Counselor Advocates Develop Social Justice Interest: A Qualitative Investigation 下载免费PDF全文
Melissa Robinson Swartz Dodie Limberg Joshua Gold 《Counselor Education & Supervision》2018,57(1):18-33
The authors examined the experiences of 10 peer‐nominated exemplar counselor advocates using grounded theory methodology (Strauss & Corbin, 1998 ). Analysis by the authors yielded a model of how exemplar counselor advocates develop a social justice interest and provided key insights on how counselor educators can enhance social justice interest in their students. Implications for supervisors and scholars are presented. 相似文献
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Alan Robinson 《Learning, Media and Technology》1993,19(3):127-137
The use of videoconferencing enabled teachers, enrolled for in‐service training on three different sites in Northern Ireland, to work together. This not only facilitated educational co‐operation, but also community co‐operation. There are some technical and educational drawbacks, which are discussed. 相似文献