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Socio-technical changes have transformed information practices and challenged conceptions of cognitive authorities, referring to information sources that are deemed credible and legitimate and influence people's thinking. Cognitive authorities in group-based knowledge-construction projects in health education lessons were explored in this study. Nexus analysis was used to analyze participant interviews and video-observed social actions in three secondary school health-education classrooms (Grades 8–9) in Finland. The findings show how group-based projects employing multiple information sources offer opportunities for the distribution and co-construction of cognitive authorities. However, explicit negotiations on the authority of sources were rare. Cognitive authorities appeared as contextual and situational but also guided by broader discourses circulating in the scene of action. By embedding information literacy instruction throughout the curriculum, information professionals and teachers can support young learners to recognize relevant authorities in different spheres of knowledge and to become competent users of health information.  相似文献   
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Tertiary Education and Management - In this paper, I shall put forward a model which highlights key issues to be taken into account in an attempt to improve academic excellence by the means of...  相似文献   
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Most of the fastest-growing string collections today are repetitive, that is, most of the constituent documents are similar to many others. As these collections keep growing, a key approach to handling them is to exploit their repetitiveness, which can reduce their space usage by orders of magnitude. We study the problem of indexing repetitive string collections in order to perform efficient document retrieval operations on them. Document retrieval problems are routinely solved by search engines on large natural language collections, but the techniques are less developed on generic string collections. The case of repetitive string collections is even less understood, and there are very few existing solutions. We develop two novel ideas, interleaved LCPs and precomputed document lists, that yield highly compressed indexes solving the problem of document listing (find all the documents where a string appears), top-k document retrieval (find the k documents where a string appears most often), and document counting (count the number of documents where a string appears). We also show that a classical data structure supporting the latter query becomes highly compressible on repetitive data. Finally, we show how the tools we developed can be combined to solve ranked conjunctive and disjunctive multi-term queries under the simple \({\textsf{tf}}{\textsf{-}}{\textsf{idf}}\) model of relevance. We thoroughly evaluate the resulting techniques in various real-life repetitiveness scenarios, and recommend the best choices for each case.  相似文献   
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Following the development of inclusive education in vocational education and training (VET), the discussion about the prevention of marginalisation and dropouts has increased. At the same time, the formal education system has strengthened the position of support services, such as special educational needs (SEN) teachers, social workers and counsellors. However, a confusion of roles in the work of SEN teachers seems evident. The changing work of SEN teachers has not been of great research interest in Finland. The focus has been mainly on SEN teachers at the secondary school level (Kivirauma and Kuorelahti, 2002; Ström, 1999). The work of vocational SEN teachers has been studied by Kaikkonen, 2010 and Hirvonen, 2006. SEN teachers comprise two groups in the field: one group supports vocational subjects and the other group supports general subjects. The aim of this study is to determine how SEN teachers of general subjects define the objectives of their work and how they organise pedagogical support. Ten SEN teachers in vocational colleges were interviewed. A qualitative analysis was performed. The main findings showed, on the one hand, an autonomous position and, on the other, a work model that can be described as a ‘traditional special needs education model’. However, the findings showed that the autonomous role was contradictory. SEN teachers did not emphasise the connection with the VET community or college‐based guidelines and directions. Moreover, although the consultative role exists, the findings showed that it is not a regular part of the work of SEN teachers.  相似文献   
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This study examined to what extent teacher–student conflict and closeness, on the one hand, and students’ self-concepts of ability in literacy and mathematics, on the other, are related to students’ achievement emotions (enjoyment, anxiety and boredom) in mathematics and literacy among Finnish early adolescents (N = 854). We also investigated the extent to which these associations are moderated by student temperament (surgency/extraversion, negative affectivity and effortful control). The results showed, after accounting for relevant covariates, that in both school subjects, teacher–student conflict was negatively related to enjoyment and positively to anxiety and boredom, whereas teacher–student closeness was positively related to enjoyment and negatively to boredom. Self-concepts of ability in both school subjects were positively related to enjoyment and negatively to anxiety, whereas the self-concept of ability was only negatively related to boredom in mathematics. Student temperament also moderated some of the associations in the literacy domain. Lower levels of conflict in the teacher–student relationship were related to higher levels of enjoyment in literacy, particularly among students who had lower levels of surgency/extraversion. Also, a closer relationship with the teacher or a lower self-concept of ability in literacy was related to higher levels of anxiety, particularly among students who had low effortful control. In the mathematics domain, the associations between the self-concept of ability and achievement emotions were somewhat stronger than in literacy, and the domain-specific associations were not dependent on student temperament.

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Conclusions In university settings good leadership seems to depend, among other factors, on the culture of the department and the nature of academic work in the field involved. Consequently, it is important to find solutions valid for the department involved. The development work of academic leadership should be carried out in voluntary co-operation with the academic staff, starting with the analysis of the current leadership culture. The departments may also have to change their cultures somehow in the future because of the rapidly changing environment. The longer and the more successfully the ideas, assumptions, and values dealing with the leadership have been working, the more difficult these changes might prove to be (Schein 1985). This is a shortened version of the paper delivered at the 16th Annual EAIR Forum (Amsterdam 1994): the full text can be obtained from the author.  相似文献   
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Citizen users play important roles in the acceleration phase of energy transitions, during which small-scale renewable energy technologies (S-RET) become taken up more widely. From users’ perspective, turning the early, and typically slow, proliferation into a more rapid and widespread diffusion requires not only the adoption of S-RET but also the adaptation, adjustment, intermediation and advocacy of S-RETs. These activities become necessary because S-RET face a variety of market, institutional, cultural and environmental conditions in different countries. New Internet-based energy communities have emerged and acted as key user-side transition intermediaries that catalyse these activities by qualifying market information, articulating demand and helping citizen users to reconfigure the standard technology to meet the specificities of different local contexts. In doing so, Internet communities foster an appreciatively critical discourse on technology. Such user intermediation is important in expanding the markets for S-RET beyond that of enthusiasts, environmentalists and other early adopters, to the early majority of adopters who demand more exposure, clearer information and less uncertainty about new technology options.  相似文献   
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This paper presents a research-based teaching-learning sequence (TLS) that focuses on the notion of interaction in teaching Newton’s third law (N3 law) which is, as earlier studies have shown, a challenging topic for students to learn. The TLS made systematic use of a visual representation tool—an interaction diagram (ID)—highlighting interactions between objects and addressing the learning demand related to N3 law. This approach had been successful in enhancing students’ understanding of N3 law in pilot studies conducted by teacher-researchers. However, it was unclear whether teachers, who have neither been involved with the research nor received intensive tutoring, could replicate the positive results in ordinary school settings. To address this question, we present an empirical study conducted in 10 Finnish upper secondary schools with students (n?=?261, aged 16) taking their mandatory physics course. The study design involved three groups: the heavy ID group (the TLS with seven to eight exercises on IDs), the light ID group (two to three exercises on IDs) and the no ID group (no exercises on IDs). The heavy and light ID groups answered eight ID questions, and all the students answered four questions on N3 law after teaching the force concept. The findings clearly suggest that systematic use of the IDs in teaching the force concept significantly fostered students’ understanding of N3 law even with teachers who have no intensive tutoring or research background.  相似文献   
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