手机文化时代下高校思想政治教育新途径探索

手机作为新的信息载体,其独特的手机文化越来越受到人们的重视。本文通过对手机文化的阐述,分析了手机文化对大学生群体的影响,结合其特征提出了四种利用手机文化进行高校思想政治教育的有效途径,同时,提出了三种遏制手机文化消极影响的途径,拓展了新时期高校思想政治教育载体的内涵、功能和形态,增添了高校思想政治教育信息化的特色,增强了思想政治教育的有效性和时效性。     

钙离子电流对螺旋波的稳定性的影响

基于LuoRudy91模型研究了心脏组织中的钙离子电流对螺旋波的稳定性的影响。研究表明,通过有效减弱钙离子电流的大小,可以有效减小心肌细胞的动作电住持续时间ADP恢复曲线的斜率,从而有效地增加了心脏组织中的螺旋波的稳定性。     

Structures and biogenetic analysis of lipofuscin bis-retinoids

Age-related macular degeneration (AMD) is still an incurable blinding eye disease because of complex pathogenic mechanisms and unusual diseased regions.With the use of chemical biology tools,great progress has been achieved in improving the understanding of AMD pathogenesis.The severity of AMD is,at least in part,linked to the non-degradable lipofuscin bis-retinoids in retinal pigment epithelial (RPE).This material is thought to result from the lifelong accumulation of lysosomal residual bodies containing the end products derived from the daily phagocytosis of rod outer segments by RPE cells.Here,we present previously recognized bis-retinoids with focus on structures and biosynthetic pathways.In addition to a brief discussion on the mutual conversion relationships of bis-retinoids,future perspectives and the medical relevance of such studies on these lipofuscin constituents are also highlighted.     

大学生考试作弊行为变化的一般过程及影响因素概论

大学生考试作弊的本质是有意识的人的实践行为.行为的产生和发展是有其内在规律可循的.深入把握学生作弊的行为规律和影响因素是有效防治作弊的前提基础.作弊行为产生一般而言可分为考试期望形成、作弊意识形成、考试作弊策划和准备、实施作弊行为前的权衡、作弊行为实施以及作弊结果对价值观念影响等六个阶段.在各个阶段中,学生思想、行为和行为决策都是在各种主客观因素的综合影响下产生变化的.     

可移动扫描仪的空间频率响应测量

本文以符合ISO 12233标准的测试图和专业图像质量分析软件测量了可移动扫描仪的空间频率响应。与平台式扫描仪测量数据的比较表明,可移动扫描仪的综合性能占优。     

空间填充曲线的数字半色调应用

本文讨论如何合理地应用空间填充曲线,包括以空间填充曲线控制误差扩散算法的扫描轨迹、用于幅度调制网点的记录点集聚和标量彩色半色调处理。     

Information for social and economic participation: A review of related research on the information needs and acquisition of rural Chinese

This paper provides an analytical overview of related literature published during the past decade on rural population's information needs and acquisition in China, with a view to informing the world research community and policy makers of what has been found about the information needs of the world's largest rural population and to promoting dialogue between interested researchers within and outside China. Results from related studies are summarized; major methodological features of these studies are noted; practical and theoretical implications of major findings are critically analyzed. Although the results from related studies are not directly comparable due to their differences in research methods and contexts, it is nevertheless possible to draw some common conclusions regarding the rural population's information needs and information source preferences. Related research has overwhelmingly showed that rural residents have an extensive range of information needs, with agricultural technological information, market information, income generation information and policy information being the most needed; and that they rely very much on interpersonal relationships for acquiring both general information and information for agriculture production. The primary objectives of most studies are pragmatic rather than theoretical.     

公共财政资助学科项目监理制度改革探讨与建议

从促进宝贵的学科项目管理经验有效推广的角度,揭示当前公共财政资助学科建设项目考评中存在的问 题,围绕全程参与和全面反馈两个着眼点,提出面向项目管理考评的第三方监理实施的总体架构、功能改变及具体建 议,希望能为国家科技项目的管理改革提供一定的决策借鉴作用。     

文本分类中基于训练样本空间分布的K近邻改进算法

KNN算法是文本分类中广泛应用的算法.作为一种基于实例的算法,训练样本的数量和分布位置影响KNN分类器分类性能.合理的样本剪裁以及样本赋权方法可以提高分类器的效率.提出了一种基于样本分布状况的KNN改进模型.首先基于样本位置对训练集进行删减以节约计算开销,然后针对类偏斜现象对分类器的赋权方式进行优化,改善k近邻选择时大类别、高密度训练样本的占优现象.试验结果表明,本文提出的改进KNN文本分类算法提高了KNN的分类效率.     

我国青少年网络阅读现状分析

我国官方权威机构发布的国民阅读调查和互联网发展状况统计报告表明,青少年正逐渐成为网络阅读的主力军。在对部分青少年网络用户的抽样调查中发现,青少年网络文学阅读的读者数量大,但阅读质量的经典性仍有待提高。