Lifelong Learning and Social Justice: Communities,Work and Identities in a Globalised World – By S. Jackson     

Birger Steen Nielsen 《Higher Education Quarterly》2012,66(3):331-333

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Efficient reverse k-nearest neighbor estimation     

Elke Achtert  Christian B?hm  Peer Kr?ger  Peter Kunath  Alexey Pryakhin  Matthias Renz 《Informatik - Forschung und Entwicklung》2007,15(3):179-195

The reverse k-nearest neighbor (RkNN) problem, i.e. finding all objects in a data set the k-nearest neighbors of which include a specified query object, has received increasing attention recently. Many industrial and scientific applications call for solutions of the RkNN problem in arbitrary metric spaces where the data objects are not Euclidean and only a metric distance function is given for specifying object similarity. Usually, these applications need a solution for the generalized problem where the value of k is not known in advance and may change from query to query. In addition, many applications require a fast approximate answer of RkNN-queries. For these scenarios, it is important to generate a fast answer with high recall. In this paper, we propose the first approach for efficient approximative RkNN search in arbitrary metric spaces where the value of k is specified at query time. Our approach uses the advantages of existing metric index structures but proposes to use an approximation of the nearest-neighbor-distances in order to prune the search space. We show that our method scales significantly better than existing non-approximative approaches while producing an approximation of the true query result with a high recall.  相似文献   

Optimale Dimensionswahl bei der Bearbeitung des Similarity Join     

Christian B?hm  Hans-Peter Kriegel 《Informatik - Forschung und Entwicklung》2002,6(6):68-76

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American Musical Comedy as a Liminal Ritual of Woman as Homemaker     

Christian Mendenhall 《Journal of American culture (Malden, Mass. : 2003)》1990,13(4):57-69

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The Culturing of Bacteria     

Christian Bonah 《Metascience》2007,16(3):479-483

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A framework for analyzing cognitive demand and content‐practices integration: Task analysis guide in science     

Miray Tekkumru‐Kisa  Mary Kay Stein  Christian Schunn 《科学教学研究杂志》2015,52(5):659-685

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Science Teachers’ Response to the Digital Education Revolution     

Wendy Nielsen  K. Alex Miller  Garry Hoban 《Journal of Science Education and Technology》2015,24(4):417-431

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Individual Differences in Fifth Graders’ Literacy and Academic Language Predict Comprehension Monitoring Development: An Eye-Movement Study     

Carol McDonald Connor  Ralph Radach  Christian Vorstius  Stephanie L. Day  Leigh McLean  Frederick J. Morrison 《Scientific Studies of Reading》2015,19(2):114-134

In this study, we investigated fifth graders’ (n = 52) fall literacy, academic language, and motivation and how these skills predicted fall and spring comprehension monitoring on an eye movement task. Comprehension monitoring was defined as the identification and repair of misunderstandings when reading text. In the eye movement task, children read two sentences; the second included either a plausible or implausible word in the context of the first sentence. Stronger readers had shorter reading times overall suggesting faster processing of text. Generally fifth graders reacted to the implausible word (i.e., longer gaze duration on the implausible vs. the plausible word, which reflects lexical access). Students with stronger academic language, compared to those with weaker academic language, generally spent more time rereading the implausible target compared to the plausible target. This difference increased from fall to spring. Results support the centrality of academic language for meaning integration, setting standards of coherence, and utilizing comprehension repair strategies.  相似文献   

‘Pervy role-play and such’: girls' experiences of sexual messaging online     

Silja Nielsen  Sanna Spisak 《Sex education》2015,15(5):472-485

Sexting is one of the recurring causes of concern in public discussion of young people and network media. This paper builds on findings from a survey with 1269 Finnish female respondents aged 11–18 conducted using a popular online community for girls on their experiences of and views on online messages concerning sex and sexuality. Sixty-five per cent of respondents had received messages related to sex from either adults or minors while 20% had also sent such messages themselves. The paper asks how girls experience and make sense of sexual messaging and what motivates them to engage in such interactions. Specific attention is paid to the distinction between unwanted and wanted messages. While messages from unknown people identified as adult were often discussed as unpleasant or ‘creepy’, sexual messaging, role-play, cybersex experiments and discussions related to sex among peers were defined as fun and pleasurable. Girls display notable resilience and describe coping strategies connected to unwanted messaging but equally frame sexual messaging and role-play as issues of choice motivated by curiosity and pleasure. The paper addresses sexual messaging as a form of sexual play and learning, and argues for the importance of contextual analysis in understanding its forms and potentialities.  相似文献   

Correction to: Mapping the field of research on African higher education: a review of 6483 publications from 1980 to 2019     

Zavale  Nelson Casimiro  Schneijderberg  Christian 《Higher Education》2022,83(1):235-240

Higher Education - A Correction to this paper has been published: https://doi.org/10.1007/s10734-021-00691-x  相似文献