Some Problems of 2D Morphological and Median Filters     

朱广进  李介谷 《上海大学学报(英文版)》1997,1(3):245-248

lintroductionMOrpnologicalandnlediantiltersasaclassofnonlineardiscretetilters11avegotWideapplicationsinsignalandimageprocessing.Incontrastwithlinearfilters,medianfiltersandtheirgenerationsareattractivebecausetheyareeasytoimplenlentandcansuppressimpulsenoi…  相似文献   

触摸屏技术的原理及应用   总被引：4，自引：0，他引：4  

曲海波  陈莉 《中国教育技术装备》2006,(11):49-51

触摸屏技术被认为是未来人机交互科技的主流方向之一。相关的产业及其产品的应用也正在成为一个技术热点。阐述了触摸屏技术的基本原理，应用场合及发展趋势。  相似文献   

城市社区体育组织结构"小型化"探索     

杨丽红  丁长海 《泉州师范学院学报》2003,21(2):115-118

为适应城市居民生活“小区”化和以建设“明小区”为重点的社会工作路线，改变目前社区体育组织以“街道”为单一层次的基本结构，本课题采用献法、调查法、比较及逻辑法等，对“小型化”社区体育组织的现状、目标及发展模式进行了深入研究，并提出了辐射型、网络型、独立型三种递进式组织结构模式，为社区体育组织结构的转型发展提供参考依据。  相似文献   

白居易的妇女诗作解读     

徐黎 《开封教育学院学报》2002,22(3):15-17

本文对唐代现实主义杰出诗白居易关注妇女问题的诗作进行归类解读，从贫妇、宫妇、商妇、弃妇、征妇、歌妓等几类人中，审视中国封建社会复杂的文化环境，揭示出妇女充满崎岖和痛苦的悲惨命运，进一步分析了白居易的现实主义创作观。  相似文献   

高职大学生英语学习动机和取向的调查研究     

李华 《新疆教育学院学报》2005,21(4):55-57

本文调查了非英语专业一年级高职大学生英语学习的动机和取向，并运用因子分析和多元回归分析对数据进行了分析。分析结果显示，最能反映学生英语学习动机的四种取向为：学业（工具型）取向、知识取向、事业（工具型）取向、社交取向；这四种取向可以解释83％的动机。  相似文献   

Florida and Puerto Rico Secondary Science Teachers’ Knowledge and Teaching of Climate Change Science     

Benjamin C. Herman  Allan Feldman  Vanessa Vernaza-Hernandez 《International Journal of Science and Mathematics Education》2017,15(3):451-471

Misconceptions about climate change science are pervasive among the US public. This study investigated the possibility that these misconceptions may be reflective of science teachers’ knowledge and teaching of climate change science. Florida and Puerto Rico secondary science teachers who claim to teach extensively about climate change were surveyed in regard to their conceptions of climate change science and the climate change-related topics they teach. Results show that many teachers hold naïve views about climate change (e.g. that ozone layer depletion is a primary cause of climate change) and climate change science (e.g. that it must be based on controlled experiments for it to be valid). In addition, teachers in both groups neglect crucial topics such as how evidence for climate change is developed and the social, political, and economic dimensions of climate change. Our results suggest the need for teachers to understand how to teach climate change and the nature of climate change science using authentic contexts that promote effective socioscientific decision-making and climate change mitigation.  相似文献   

Integrating Tinbergen's inquiries: Mimicry and play in humans and other social mammals     

Elisabetta Palagi  Chiara Scopa 《Learning & behavior》2017,45(4):378-389

Visual signals convey emotions and intentions between individuals. Darwin underlined that human facial expressions represent a shared heritage between our species and many other social mammals. Social play is a fertile field to examine the role and the potential communicative function of facial expressions. The relaxed open-mouth (or play face) is a context-specific playful expression, which is widespread in human and non-human mammals. Here, we focus on playful communication by applying Tinbergen’s four areas of inquiry: proximate causation, ontogeny, function, and evolution. First of all we explore mimicry by focusing on its neural substrates and factors of modulation within playful and non-playful context (proximate causation). Play face is one of the earliest facial expressions to appear and be mimicked in neonates. The motor resonance between infants and their caregivers is essential later in life when individuals begin to engage in increasingly complex social interactions, including play (ontogeny). The success of a playful session can be evaluated by its duration in time. Mirroring facial expressions prolongs the session by favoring individuals to fine-tune their own motor sequences accordingly (function). Finally, through a comparative approach we also demonstrate that the elements constituting play communication and mimicry are sensitive to the quality of interindividual relationships of a species, thus reflecting the nature of its social network and style (evolution). In conclusion, our goal is to integrate Tinbergen’s four areas of ethological inquiry to provide a broader framework regarding the importance of communication and mimicry in the play domain of humans and other social mammals.  相似文献   

Editorial: Data Use—a Key to Improve Teaching and Learning?     

Stephan Gerhard Huber  Guri Skedsmo 《Educational Assessment, Evaluation and Accountability》2016,28(1):1-3

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抗战初期中国知识界关于文化发展方向的探讨     

李小尉 《历史教学》2006,11(8):30-34

1937年7月,抗日战争全面爆发初期,面对空前严重的民族危机,中国知识界开始探讨中国文化的发展方向,掀起了关于文化问题的反思和讨论.知识界关于文化问题的讨论,不仅有力地促进了抗战文化运动的兴起和发展,而且为中国共产党新民主主义文化理论的形成奠定了一定的基础.  相似文献   

学校转型性变革中的评价改革——基于"新基础教育"成型性研究中期评估的探究     

叶澜  李政涛  吴亚萍 《教育发展研究》2007,(7):1-10

"新基础教育"通过成型性研究中期评估的研究和实践,形成了"推进型评价"概念.本文在分析学校转型性变革中推进型评价的性质基础上,介绍了推进型评价指标体系构成的特点与权重分配,同时揭示了"新基础教育"成型性研究中期评估活动过程中的方法论思想,及评估活动对所有参与者产生的评估效应和发展价值.  相似文献