排序方式： 共有121条查询结果，搜索用时 15 毫秒
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Zahide Yildirim Charles M. Reigeluth Seolim Kwon Yuichi Kageto Zihang Shao 《Interactive Learning Environments》2013,21(6):721-736
This study explored the use of several learning management systems (LMS), their benefits, and their limitations in relation to the desired characteristics of an ideal Personalized Integrated Educational System (PIES) for the information age. A qualitative research design was used. The participants of the study were teachers, administrators, and technology coordinators in a small suburban school district. The data were collected through interviews and were subjected to content analysis. The findings of the study indicated that each of the LMSs investigated in this study still has some significant limitations, for none of them provides all the information-age functions of PIES, and what an ideal PIES should possess as information-age functions can be categorized under students’ learning, assessment and system-related preferences. 相似文献
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Bridget A. Franks David J. Therriault Miriam I. Buhr Evelyn S. Chiang Claire M. Gonzalez Heekyung K. Kwon Jenni L. Schelble Xuesong Wang 《Metacognition and Learning》2013,8(2):145-171
This study explored the abilities of 5th, 8th, and 10th graders, and College students to reason logically about what they read. Both students’ metacognitive behavior (looking back at previously read text) and their performance on logical deduction questions were recorded and analyzed in a reading task. Conditional logic premises and deductive questions were embedded in three narratives containing premise information that was factual (True Story), contrary to fact (False Story), or unverifiable via common world knowledge (Neutral Story). The texts and questions were presented one sentence at a time on a computer screen; participants controlled the presentation of sentences. For answering the questions, three response tasks were devised. One task (labeled Generate) required readers to generate their own logical conclusions in response to deduction questions. Two tasks (labeled Valid and Invalid) required readers to evaluate logically valid or logically invalid conclusions drawn by story characters in the texts. Students in early and late adolescence looked back more when asked to evaluate logical conclusions than when asked to generate conclusions on their own; College students’ lookback frequencies were not significantly affected by response task, but were greater overall than those of younger students. With conditional forms requiring an uncertainty response (Affirmed Consequent and Denied Antecedent), readers looked back more when evaluating logically invalid conclusions than when evaluating logically valid ones. Readers of all ages were more likely to agree with story characters’ (valid) uncertain conclusions with the AC and DA forms than they were to disagree with story characters’ (invalid) certain conclusions to these forms. Both lookback frequency and performance on logic questions were lowest when readers were required to reason from contrary to fact premises. 相似文献
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R. Sakthivel R. Sakthivel V. Nithya P. Selvaraj O.M. Kwon 《Journal of The Franklin Institute》2018,355(14):6353-6370
This paper studies the robust stochastic stabilization problem for a class of fuzzy Markovian jump systems with time-varying delay and external disturbances via sliding mode control scheme. Based on the equivalent-input-disturbance (EID) approach, an online disturbance estimator is implemented to reject the unknown disturbance effect on the considered system. Specifically, to obtain exact EID estimation Luenberger fuzzy state observer and a low-pass filter incorporated to the closed-loop system. Moreover, novel fuzzy EID-based sliding mode control law is constructed to ensure the stability of the closed-loop system with satisfactory disturbance rejection performance. By employing Lyapunov stability theory and some integral inequalities, a new set of delay-dependent robust stability conditions is derived in terms of linear matrix inequalities (LMIs). The resulting LMI is used to find the gains of the state-feedback controller and the state observer a for the resulting closed-loop system. At last, numerical simulations based on the single-link arm robot model are provided to illustrate the proposed design technique. 相似文献
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As a part of the National Digital Information Infrastructure and Preservation Program (NDIIPP), the Library of Congress (LC), partnering with the Center for Technology in Government (CTG), launched an effort in 2005 to integrate state governmental entities into the national network to preserve born-digital information that is both significant and at risk of loss. The main theme that emerged from the efforts of LC, CTG, and the state and federal digital preservation community was the importance of partnership efforts and collaborative strategies for the preservation of state government digital information. Based on the findings of the initiative, this paper discusses challenges and opportunities regarding interorganizational collaboration and community building for digital preservation of state government information. Following the community of practice framework, it is recommended that a “state government digital information preservation community” be developed to facilitate collaboration across agencies and knowledge professionals in state governments. 相似文献
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This study identifies characteristics of Americans who chose the library as their primary cancer information source over the Internet by examining demographic characteristics, online use experience, concerns of information quality, and perceptions of cancer information seeking. A secondary data analysis is conducted using the Health Information National Trends Survey (HINTS) of the National Cancer Institute (NCI). Findings reveal that people who are more likely to choose the library are, compared to their Internet counterparts, people who lack online experience, are distrustful of online cancer information, and are more aware of cancer sources. However, they are not necessarily more adept cancer information seekers and do not have a greater expectation of getting quality information from the library. These findings suggest how the library plays its role as an information source for cancer information consumers in the e-health environment. Implications of the findings are discussed in a way that libraries could invest their efforts to reduce the digital health divide and to advance consumer health information literacy. 相似文献
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The purpose of this study is to explore USA educators＇ resistance toward cultural awareness for Korean students and families in the New York metropolitan area. The authors aim to challenge teachers＇ color-blindness that is widely spread among USA educators. Guided by critical race theory, the authors show that the perceived fairness of color-blindness could cause struggles for Korean parents and students in American schools. The authors posit USA teachers need to thoroughly understand that if a teacher does not see color, then s/he does not really see children. This study, hopefully, will help educators recognize the necessity of understanding diverse ethnic parents＇ perspectives and needs. Also, this study will provide an opportunity for educators to rethink assumptions that are embedded in color-blindness, and advance muiticultural education that is more culturally relevant and responsive for different ethnic/racial groups＇ needs. 相似文献
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Although 21% of all Chinese students studying at Korean universities are in graduate schools (Korean Educational Development Institute, 2008), little is known about their sociocultural adjustment. This study explores Chinese graduate students’ perceptions regarding their sociocultural adjustment experiences and capture the essence of the influences on their sociocultural adjustment during their early cross-cultural transition. The study is based on interview data from nine Chinese graduate students who attended three universities in Seoul in 2009. The model of sociocultural adjustment is employed as a conceptual framework to explore the perceptions of Chinese graduate students regarding their sociocultural adjustment. The four main themes emerged from the in-depth interview sessions were perceived cultural distance, language competency, low level of interaction with host nationals, and biased stereotypes. 相似文献
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Social media rumors are improvised and expressive forms of public opinion that especially arise under uncertain sociopolitical situations. This study utilizes early rumor studies as theoretical framework for textual analysis of Twitter public opinion. A content and semantic network analysis of Twitter messages spread during Korean saber rattling in 2013 was conducted for understanding public opinion in an uncertain context. The results show that, while non-rumor narratives focus on policy-level responses to the threat situation in a similar manner to institutionalized opinion polling, rumors are less concerned with official responses, instead reflective of hegemonic tensions between anti-leftwing political sentiments and the counteractive accounts. Some rumors reveal the public's coping with fears in the form of humor, guesswork, or wishes. Online rumor analysis helps understand how the society's collective memories interact with the current situational uncertainty in shaping public opinions and sentiments. 相似文献