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91.
Understandings of young children as active and capable citizens, while evident in discourses of early childhood education and research, are not widely reflected in the policy for the early years of schooling in Australia. This paper makes an analysis of the gaps and tensions between discourses of young children as active citizens and policy for citizenship education at the national level in Australia and at the Queensland State level. There is a widespread discourse within early childhood that regards young children as citizens and democratic participants in their own lives, as a reflection of the oft-cited Article 12 in the UN Convention on the Rights of the Child. However, educational policy and curriculum for citizenship in Australia, by and large, adheres to age and stage understandings of children that deem young children unable to conceptualise and/or articulate ideas of what it means to ‘be a good citizen’. We ask which discourses are being harnessed in educational policy for citizenship in Australia, what discourses are silenced or ignored and what this tells us about how young children are thought about in Australian politics and education.  相似文献   
92.
This paper considers two paradigms of process-aware information systems (PAIS) that are used to share knowledge about planning and executing tasks. The case-based task management (CBTM) system is based on the transduction of execution protocols, so-called cases; and the pattern-based task management (PBTM) system is based on task patterns that are derived from cases but yield more abstract information. As user motivation to contribute to a collaborative task management system is a crucial factor for its success, we consider the different motivational requirements of CBTM and PBTM from a psychological point of view. Based on experimental findings about different factors that have been shown to enhance people's motivation to contribute their knowledge to a shared pool, we compare the two approaches and assess which one is more appropriate with respect to motivation.  相似文献   
93.
The primary objective of this study was to compare a sample ofprison inmates with the norms obtained for large samples of 12year-old students on tests measuring word decoding skills,reading and spelling abilities. Theoretically, we assumed thatphonological processing deficits are a strong predictor ofdyslexic problems, and thus, only those inmates who did not seemto possess appropriate levels of phonological decoding skillsshould be defined as dyslexics. The results showed that theinmates performed better or at the same level as 12 year-oldstudents on all tasks measuring reading, spelling, and worddecoding skills, and that 4 out of 35 inmates (11%) with Swedishas their native language exhibited phonological decoding skillssubstantially below the average of grade 6 students. Thus, bycomparing the group of inmates with 12 year-old students, and byusing phonological decoding skills as an indicator of reading andwriting disabilities, our conclusion was that the frequency ofpossible dyslexic problems found in a group of prison inmateslooks very much like comparable incidence figures from a generalpopulation.  相似文献   
94.
95.
ABSTRACT

Two historic house museums, a municipal art gallery, and a provincial archive have had comprehensive risk and option assessments done by the Canadian Conservation Institute. For each institution, an average of 60 options addressing 40 risks was analyzed in terms of risk reduction, cost, and cost-effectiveness. A meta-analysis found that cost-effectiveness follows a strong economy of scale within each institution. By estimating valuation of each collection, cost-effectiveness was converted into benefit–cost ratio of dollar spent per dollar value saved and was found not to follow an economy of scale between small and large institutions. Optimization software was applied to see if precise maximization of risk reduction gave significantly different recommendations than those in the original reports which relied on the Pareto rule of addressing the largest risks first.  相似文献   
96.
97.
The medical ultrasonic phased array technology was modified for the non-destructive testing of marble sculptures and the feasibility of the approach was evaluated. For this purpose, 1?MHz, 64-channel phased array electronic and phased array transducers were developed. The specifications of the electronics and the transducers are presented and discussed. Ultrasound images of inner structures of a marble sculpture are presented. The problem of the acoustic matching layers for different states of deterioration is discussed and the developments in view of a suitable matching layer solution are presented. This matching layer is combined with a new coupling technique that protects the marble surface. The results of experiments on ultrasound phantoms and on a marble sculpture are presented.  相似文献   
98.
Index maintenance strategies employed by dynamic text retrieval systems based on inverted files can be divided into two categories: merge-based and in-place update strategies. Within each category, individual update policies can be distinguished based on whether they store their on-disk posting lists in a contiguous or in a discontiguous fashion. Contiguous inverted lists, in general, lead to higher query performance, by minimizing the disk seek overhead at query time, while discontiguous inverted lists lead to higher update performance, requiring less effort during index maintenance operations. In this paper, we focus on retrieval systems with high query load, where the on-disk posting lists have to be stored in a contiguous fashion at all times. We discuss a combination of re-merge and in-place index update, called Hybrid Immediate Merge. The method performs strictly better than the re-merge baseline policy used in our experiments, as it leads to the same query performance, but substantially better update performance. The actual time savings achievable depend on the size of the text collection being indexed; a larger collection results in greater savings. In our experiments, variations of Hybrid Immediate Merge were able to reduce the total index update overhead by up to 73% compared to the re-merge baseline.
Stefan BüttcherEmail:
  相似文献   
99.
In Sweden, but also internationally, official regimes and public health organizations conduct fairly comprehensive antidoping measures. As a consequence, numerous ‘new’ ways to learn about and access these types of drugs have emerged. Social media and different internet forums, for example, have become part of a new self-help culture in which people can anonymously approach these substances, discuss their experiences of using them and minimize the possibility of encounters with the police. This article focuses on how the use of performance- and image-enhancing drugs (PED) is perceived and negotiated socially in the context of an internet-mediated and online community called Flashback. The results are in accordance with similar studies on internet bodybuilding communities. That is, even though the participants to a certain degree are aware of the risks and health costs of this kind of physical regime, the gains of using PED clearly dominate the discussions. Adding to this research, this article found that in the imaginary world of online bodybuilding a number of ideas about the ‘genetic max’, as well as the ultimate possibility of exceeding one’s limits, and creating something special and extraordinary, circulate. These stories confirm in many ways the legitimate mission of searching for the ultimate bodybuilding adventure, using different means and methods to transcend the limits of the self/body.  相似文献   
100.
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