排序方式： 共有49条查询结果，搜索用时 15 毫秒
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The phenomenon of eParticipation is receiving increasing attention, demonstrated by recent technology implementations, experiments, government reports, and research programs. Understanding such an emerging field is a complex endeavor because there is no generally agreed upon definition of the field, no clear overview of the research disciplines or methods it draws upon, and because the boundaries of the field are undecided. Using conventional literature review techniques, we identify 131 scientific articles considered important for the field's theoretical development. This sample provides the starting point for a grounded analysis leading to the development of an overview model: the field of eParticipation seen from a researcher's perspective. The model provides structure for understanding the emerging shape of the field as well as an initial indication of its content. It also provides the basis for developing research agendas for the future. 相似文献
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Statistical language models have been successfully applied to many information retrieval tasks, including expert finding: the process of identifying experts given a particular topic. In this paper, we introduce and detail language modeling approaches that integrate the representation, association and search of experts using various textual data sources into a generative probabilistic framework. This provides a simple, intuitive, and extensible theoretical framework to underpin research into expertise search. To demonstrate the flexibility of the framework, two search strategies to find experts are modeled that incorporate different types of evidence extracted from the data, before being extended to also incorporate co-occurrence information. The models proposed are evaluated in the context of enterprise search systems within an intranet environment, where it is reasonable to assume that the list of experts is known, and that data to be mined is publicly accessible. Our experiments show that excellent performance can be achieved by using these models in such environments, and that this theoretical and empirical work paves the way for future principled extensions. 相似文献
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The aim of the study is to describe and analyse research articles relating to the subject of education for sustainable development (ESD) for early childhood education (ECE), published during the years 1996–2013. This is done by answering three specific questions: (1) How is ESD defined by researchers in ECE? (2) What are the major research inquiries and results? (3) What does the research say about young children acting for change in relation to sustainability? Our analysis identified two different definitions of ESD: first, as a threefold approach to education based on questions concerning education about, in and for the environment; and, second, as an approach to education that includes three interrelated dimensions: economic, social and environmental. Two major research areas are identified in this study. The first area relates to how teachers understand ESD, while the second area focuses on how ESD can be implemented in educational practice. During the period studied, the research has evolved from teaching children facts about the environment and sustainability issues to educating children to act for change. This new approach reveals a more competent child who can think for him- or herself and make well-considered decisions. The decisions are made by investigating and participating in critical discussions about alternative ways of acting for change. 相似文献
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Leif Pedersen 《Public Library Quarterly》2016,35(4):362-365
Libraries have to change their operations because information has become ubiquitous. They must adopt the posture that they are a force for societal change, and that means new ways of thinking about services like career development and lifelong learning. The ability to help users access the critical information they want or need will be key to public library future success. 相似文献
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Research in Science Education - In Sweden, a new curriculum and new methods of assessment (grading of students and national tests) in science education were introduced in grade 6 in 2012/2013. We... 相似文献
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Jim Ryder Malena Lidar Eva Lundqvist Leif Östman 《International Journal of Science Education》2018,40(5):538-563
We explore the experiences of school science teachers as they enact three linked national curriculum and assessment policy reforms in Sweden. Our goal is to understand teachers’ differing responses to these reforms. A sample of 13 teachers engaged in 2 interviews over a 6–9-month period. Interviews included exploration of professional background and school context, perceptions of the aims of the policy reforms and experiences of working with these reforms in the classroom. Analysis was guided by an individual-oriented sociocultural perspective on professional agency. Here teaching is conceptualised as an ongoing interplay between teachers’ knowledge, skills and personal goals, and the characteristics of the social, institutional and policy settings in which they work. Our analysis shows that navigating the ensuing continuities and contradictions results in many different expressions of teacher agency, e.g. loss of autonomy and trust, pushing back, subversion, transfer of authority, and creative tensions. Typically, an individual teacher’s enactment of these reforms involved several of these expressions of agency. We demonstrate that the sociocultural perspective provides insights into teachers’ responses to education policy reform likely to be missed by studies that focus largely on individual teacher knowledge/beliefs about reform or skills in ‘implementing’ reform practices. 相似文献
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Ian Ruthven Mark BaillieLeif Azzopardi Ralf BierigEmma Nicol Simon SweeneyMurat Yaciki 《Information processing & management》2008
In this paper we investigate how information surrogates might be useful in exploratory search and what information it is useful for a surrogate to contain. By comparing assessments based on artificially created information surrogates, we investigate the effect of the source of information, the quality of an information source and the date of information upon the assessment process. We also investigate how varying levels of topical knowledge, assessor confidence and prior expectation affect the assessment of information surrogates. We show that both types of contextual information affect how the information surrogates are judged and what actions are performed as a result of the surrogates. 相似文献