在影子空间里开展数字实践

为解决当前网络教学和未来数字教育中如何开展实习、实验等实践教学的难题,基于数字教育的概念,提出开展"数字实践"的新构想.定义了影子空间和数字实践的概念,研究了数字实践的特征和可开展的数字实践项目,研究并给出了影子空间里开展数字实践的途径与方式.结果 显示,与生产实践一样,数字实践也可以认知工程现场,领悟结构原理和工作原...     

贫困高中学生社会支持与心理健康调查研究

选用获学校贫困补助的学生57名为研究组，相对应的52名非贫困生为对照组，采用症状自评量表（SCL－90）、社会支持评定理表和自编教师评价问卷对贫困高中学生心理健康状况和社会支持状况进行调查，为高中贫困学生心理卫生工作提供科学依据。结果：1）贫困生SCL－90量表测量的总分、躯体化水平、强迫症状、人际敏感、抑郁、偏执、精神病性、其他各因子分显高于非贫困生；2）社会支持评定量表的主观支持和支持利用度评分贫困生普遍得分低于非贫困生；3）贫困生社会支持量表评分与SCL－90各因子负相关。结论：1）高中贫困学生心理健康问题值得学校心理卫生工作关注；2）应提高贫困学生对社会支持的感受性和对支持源的利用。     

Students' reasoning about chemical bonding: The lacuna of repulsion

This article concerns a lacuna in chemistry students' reasoning about chemical bonding. Although chemistry students are familiar with the charges that make up the atom––both positive and negative––they refer only to the attraction between unlike charges. Specifically, they ignore the repulsion between the positive nuclei. We named this disregard of repulsion the lacuna of repulsion. Repulsion is a crucial component in the force-based explanation of chemical bonding, presenting the bond as a dynamic equilibrium between attraction and repulsion electrical forces. We noticed this lacuna incidentally while interviewing chemistry students for a bigger project aimed at supporting students in understanding the force-based explanation of chemical bonding. This article describes our systematic qualitative study of the lacuna of repulsion and its impact on mental models of 23 high school chemistry students. Our findings show that students use six mental models, most of them built upon each other. Beginning from a simple mental model that describes the chemical bond as electrons, continuing with the including attraction forces, and completing with repulsion and a dynamic view of the bond. Only when one considers both attraction and repulsion forces and understands the dynamic balance between them is it possible to build the force-based dynamic mental model of chemical bonding.     

穆旦在新中国的诗歌创作及意义

在意识形态话语的压抑下，新中国的穆旦领旦领悟到了生命个体的虚弱与渺小，因此诗人重审自己的生存位置，确认了自我的“小人物”身份，在自动疏离主流话语之后，诗人在诗歌创作中自由表达生命个体对于时代与自我的独特感受，从而在诗歌本中建构起一个独立自足的主体空间。     

基于神经网络的垃圾邮件过滤

垃圾邮件的过滤是一个具有重要现实意义的课题．将交叉覆盖学习算法和向量空间模型等技术相结合可得到一种新的垃圾邮件过滤方法．实验结果表明该方法识别率较高，具有较强的实用价值．     

对海南师范学院体育专业学生心理健康状况的调查与研究

用SCL-90症状自评量表、陈勇嘉研究的体育专业学生心理健康量表对海南师范学院148名大学生进行测评，发现SCL-90各因子分均高于全国青年组常模，在躯体化、强迫、精神病方面的得分高于全国大学生常模；对海南师范体育专业学生心理健康的各因子得分进行了性别比较，未发现差异；海南师范体育专业二年级学生的心理问题多于一年级学生．此结果提示我们要重视海南省体育专业学生的心理健康，积极采取相应措施，及时预防和治疗体育生的心理疾病．     

广东省两所高职院校大学新生心理健康状况调查比较研究

通过采用症状自评量表（SCL-90）,对广东省两所职业院校2008级1640名大一学生心理健康状况进行调查了分析,为高职院校开展心理健康教育和心理咨询服务提供依据。     

What makes learners a good fit for hybrid learning? Learning competences as predictors of experience and satisfaction in hybrid learning space

Compared with fully face-to-face or online learning environments, implementation of hybrid learning spaces is costly given the spaces making all learning options available for learners. Therefore, decisions on investments in hybrid learning are critical for institutions. Satisfaction and experience of learners is one of the important indicators for assessing the cost-effectiveness of learning space implementation; thus, predictions of learners' satisfaction and experience can inform institutions' decision making on learning space investments. Moreover, learning competences are found correlated with learners' satisfaction and experience in general and e-learning settings. Therefore, the present study aimed at exploring predictive learning competences for hybrid learners' experience and satisfaction. A hybrid learning space was built upon a proposed model at Shanghai Open University. 211 students’ learning competences and their satisfaction and experience in the hybrid learning space were examined. The results showed that except cognitive engagement competence, most predictive competences were not significantly associated with hybrid learners' satisfaction and experience. The findings indicated that since hybrid learning keeps all options available, to experience satisfying learning, students need not have certain competences but cognitive engagement competence, which is correlated with learners' cognitive ability to figure out the right mix of learning options.     

构建小学立体的心理健康教育模式的研究

在小学开展心理健康教育是全面提升小学生素质的重要途径。实验表明 ,构建课内与课外、班主任与科任教师、主体与环境、学校、家庭与社会相互配合与协作的立体的心理健康教育模式是适合小学生的心理发展特点的行之有效的模式     

基于照片的抽象线条画生成

绘画作品以其鲜明的表达方式常常能给观众留下深刻的印象。但其对创作者的高要求使普通大众难以得心应手的自己进行创作。随着科学技术的发展,基于数码照片对各种绘画风格进行模拟成为了非真实感图形学研究的热点。本文在总结前人研究成果的基础上,结合尺度空间理论和边缘检测技术,提出了一种基于照片生成抽象线条画的方法。通过实验证明,本方法能较好的模拟线条画的主要特点。