排序方式： 共有43条查询结果，搜索用时 15 毫秒
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网络虚拟实验中二进制数据的XML传输方法 总被引：1，自引：0，他引：1
网络虚拟实验中二进制数据的XML直接传输方法存在节点数目多,解析困难,不利于网络传输等问题.针对上述情况,采用XML的CDATA域封装的方法对二进制数据进行传输.为了解决由ASCII字符引起的语法错误以及CDATA域的异常结束问题,通过Base 64编码技术对二进制数据进行处理.通过一个虚实结合的球杆系统网络虚拟实验对上述方法进行了验证. 相似文献
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Erica Rosenfeld Halverson Damiana Gibbons Shelby Copeland Alon Andrews Belen Hernando Llorens Michelle B. Bass 《Learning, Media and Technology》2014,39(3):386-403
In this article, we explore how youth audiences evaluate the quality of youth-produced films. Our interest stems from a dearth of ways to measure the quality of what youth produce in artistic production processes. As a result, making art in formal learning settings devolves into either romanticized creativity or instrumental work to improve skills in core content areas. We conducted focus groups with 38 youth participants where they viewed four different films produced by the same youth media arts organization that works with young people to produce short-form, autobiographical documentaries. We found that youth focused their evaluations on identifying the films' genre and content and on assessing how well the filmmakers' creative decisions fit with identifications of genre and content. Evaluations were mediated by audiences' expectations and seemed to inform judgments of quality and creativity. We hope that our work can inform the design of formal learning spaces where young people are producing narrative art. 相似文献
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This study was conducted to determine if there is or is not a difference in attitudes toward educational media between older adults and younger adults. Attitudinal information was gathered from the two groups utilizing an instrument entitled “Controversy in Academia” a 39‐item Likert‐type questionnaire. The questions from the instrument were divided into six groups, and six operational hypotheses were generated to effect testing. The results indicated that there were no basic differences between the attitudes toward educational media expressed by older adults and those expressed by younger adults. 相似文献
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How can researchers in K–12 contexts stay true to the principles of rigorous evaluation designs within the constraints of classroom settings and limited funding? This paper explores this question by presenting a small-scale randomized controlled trial (RCT) designed to test the efficacy of curricular supplemental materials on epigenetics. The researchers asked whether the curricular materials improved students’ understanding of the content more than an alternative set of activities. The field test was conducted in a diverse public high school setting with 145 students who were randomly assigned to a treatment or comparison condition. Findings indicate that students in the treatment condition scored significantly higher on the posttest than did students in the comparison group (effect size: Cohen''s d = 0.40). The paper discusses the strengths and limitations of the RCT, the contextual factors that influenced its enactment, and recommendations for others wishing to conduct small-scale rigorous evaluations in educational settings. Our intention is for this paper to serve as a case study for university science faculty members who wish to employ scientifically rigorous evaluations in K–12 settings while limiting the scope and budget of their work. 相似文献
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Lisa Bass 《Peabody Journal of Education》2015,90(5):711-728
In this analysis, I argue that inequitable social and educational policies and practices hinder equity in the U.S. educational system. I challenge and critique the status quo, and the nation's current efforts toward educational equity. I then propose a radical shift in educational policy – a surrendering of social and political systems for the purpose of promoting equitable schooling conditions. 相似文献
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Hossein Parastvand Airlie Chapman Octavian Bass Stefan Lachowicz 《Journal of The Franklin Institute》2021,358(7):3919-3942
This study investigates on a strong correlation between complex network (CN) controllability (characterized by the number of required driver nodes) and graph symmetry (described by automorphism groups) in undirected and unweighted networks. Based on the properties of permutation products of elementary automorphisms, novel necessary conditions for CN controllability are presented which are computationally more effective than previous method. In addition, a novel index of symmetry is proposed upon which a more meaningful understanding of symmetry impact on CN controllability can be comprehended. Based on this new index, a modification strategy is suggested aiming to satisfy CN controllability with a lower number of driver nodes. The study shows that the proposed modification approach can result in a minimal set of driver nodes with a reasonable computational complexity. Further, the critical components of complex networks, in terms of their impact on the number of required driver nodes, are identified. The results of the proposed methodologies have been verified for several synthetic and real test systems including small, medium, and large power networks. 相似文献
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医学期刊的网络化现状与发展 总被引：5，自引：0，他引：5
文章分析了我国医学期刊网络化的意义、现状与问题，提出网络化不仅是医学期刊也是出版业发展的必然趋势，应该转变观念，加速人才培养，健全政策法规，统一技术标准，促进我国医学期刊网络化进一步发展。 相似文献