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This paper investigates the robust H∞ dynamic output feedback control problem for networked control systems (NCSs) with quantized measurements. The measurement losses of the communicated information are considered in an unreliable communication channel. The robust H∞ dynamic output feedback controllers are designed to handle the measurement losses and mitigate the quantization effects such that the resultant closed-loop NCS is mean-square stochastically stable with a prescribed H∞ disturbance attenuation performance. The controller existence conditions can be derived in terms of linear matrix inequalities (LMIs). Finally, an example is provided to illustrate the effectiveness of the proposed approach. 相似文献
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While there is an increased interest in describing attitudes of teachers, parents and peers towards students with special educational needs in regular education, there is a lack of knowledge about various variables relating to the attitudes of these three groups. The aims of this study are: (1) to examine which variables relate to the attitudes of teachers (N?=?44), parents (N?=?508) and peers (N?=?1113) towards students with Attention Deficit/Hyperactivity Disorder, Autistic Spectrum Syndrome or a cognitive disability in regular primary education and (2) to examine whether teachers and parents’ attitudes affect the attitudes of peers. An attitude survey was used to assess attitudes and data were analysed by means of multilevel analyses. The variables found in this study relating to attitudes can be used as a foundation to develop interventions to change attitudes. 相似文献
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Anke de Boer Sip Jan Pijl Alexander Minnaert 《International Journal of Inclusive Education》2013,17(3):331-353
Teachers are seen as key persons to implement inclusive education. Positive attitudes are therefore argued as playing a considerable role in implementing this educational change successfully. The aim of this study is to examine what attitudes teachers hold towards inclusive education, which variables are related to their attitudes and if these affect the social participation of pupils with special needs in regular schools. A review of 26 studies revealed that the majority of teachers hold neutral or negative attitudes towards the inclusion of pupils with special needs in regular primary education. No studies reported clear positive results. Several variables are found which relate to teachers’ attitudes, such as training, experience with inclusive education and pupils’ type of disability. No conclusion could be drawn regarding the effects of teachers’ attitudes on the social participation of pupils with special needs. 相似文献
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Greening the German book industry is a large-scale task. This article, based in part on the results of a one-day conference titled “Bio im Bücherregal?” (Engl. translation: “Eco-friendly products on the bookshelf?”) that was held in Mainz in January 2013, considers different perspectives on green publishing in Germany and presents the status quo as well as an outlook. After a brief historical and theoretical overview on the media and the environmental movement, the article presents current developments such as the initiative “Nachhaltig Publizieren” (“Green Publishing”). Initiated in 2011 by the publisher Oekom, the project has become a catalyst for the green publishing movement in Germany. In addition, this contribution introduces publishers and imprints, in particular of children’s books, that strive to fulfill the highest possible criteria for green publishing in certain project areas. Finally, the close connection between green publishing and green content is discussed. 相似文献
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The “prestige factor” has been known to social scientists for many‐years. It shows up in the “over‐reporting” that occurs whenever people are asked, to tell an interviewer their income, or the amount of schooling they have had—or the amount of viewing of an educational television station they do. The management of ETV stations is well aware that their audience often isn't as large as reported, and that the same “prestige factor” prevents them from receiving sufficient data from their audience as to the reason why they do or do not view ETV. In the present study, an experimental approach was made. Three different kinds of appeal were used in a promotional campaign designed to cause people to watch an ETV station more often. The results, of each appeal were compared to a group of ETV viewers and non‐viewers who were not exposed to the promotional material. These data were derived from the Oregon Educational Television Project, which was financed in part by a grant from the Department of Health, Education and Welfare. John Shepherd received his Ph.D. from the University of Southern California, and is presently Associate Professor of Speech and Director of the Division of Broadcast Services and Televised Instruction at the University of Oregon. 相似文献
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In this study the effects of different learning environments on the promotion of decision-making competence for the socioscientific issue of genetically modified crops is investigated. The comparison focuses on direct vs. indirect instructions. Therefore on the one hand a sophisticated decision-making strategy was presented to the directly instructed experimental group (1) and had to be applied correctly. On the other hand indirectly instructed students had to invent an appropriate strategy by themselves (2) based on the given information and the structure of the problem context. Group discussions are analysed qualitatively in order (1) to outline how the given strategy was understood and its results were reflected on by the students and (2) to explore the characteristics of invented strategies and their degree of complexity. Results indicate that the direct instruction of complex decision-making strategies may lead to a lack of understanding of the decision process when the given strategy is applied and therefore may cause rejection of the final decision. Indirectly instructed students were able to invent sophisticated decision-making strategies containing compensatory trade-offs. It is concluded that when directly instructing complex decision-making strategies, essential parts of reflection have to be integrated in order to gain greater transparency. Accordingly, empirical evidence has been found to consider indirect instruction as a possible way to foster decision-making strategies for complex socioscientific issues even if compensatory procedures are considered to be necessary. 相似文献
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This study raises the question what makes school texts comprehensible by analyzing whether students’ genre expectations about literary or expository texts moderate the impact of different forms of text cohesion on reading comprehension, even when the texts are similar regarding their genre. 754 students (Grade 9) from comprehensive schools read one of four text versions with similar content, but different degrees of local and global text cohesion. The four more or less cohesive texts were introduced as literary texts (part of a story) or as expository texts (newspaper article), although the different genres were only purported and the texts contained both literary and expository passages. Reading comprehension was assessed with multiple-choice-items, semi-open, and open-ended questions. Results demonstrate that global cohesion was profitable for reading comprehension with expository expectations, but not with literary ones. Local text cohesion and both forms of cohesion in combination did not interact with students’ genre expectations and had no main effect on comprehension. When students reading skills and prior knowledge were considered, the interaction was still apparent. Moreover, students with lower levels of reading skills tended to profit especially from texts with global cohesion, whereas the readers with higher reading skills achieved equal means in reading comprehension irrespective of the degree of global text cohesion. The findings are discussed with respect to theoretical aspects of text–reader-interactions, cognitive and emotional components of genre expectations, and the composition and instruction of comprehensible school texts. 相似文献
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Beside parents, teachers in early childhood education and care have the greatest potential to foster language acquisition in children. This is especially important for children with language delays, language disorders or bi-/multilingual children. However, they present teachers with a particular challenge in language support. Therefore, integrated language facilitation programmes are needed to promote language acquisition in the daily routine of daycare facilities and kindergartens. In this article, the Heidelberg Interaction Training for Language Promotion in Early Childhood Settings (HIT) is presented as a systematic approach to improve daily interactions between preschool teachers and children. This group training comprises six half-day sessions over a period of six months. The objective is to expand teachers’ knowledge about language development in general and more specifically regarding children with language problems or bi-/multilingual children. Furthermore, teachers learn a responsive interaction style and various strategies of language modelling by means of video supervision and feedback. Teachers’ satisfaction with the training has been evaluated and its efficacy in terms of changes in their behaviour and children's language performance has been proven in several intervention studies and meta-analytic reviews. Lastly, implementation considerations for lasting effects following the HIT are discussed. 相似文献