Understanding the majority opinion formation process in online environments: An exploratory approach to Facebook

Majority opinions are often observed in the process of social interaction in online communities, but few studies have addressed this issue with empirical data. To identify an appropriate theoretical lens for explaining majority opinions in online environments, this study investigates the skewness statistic, which indicates how many “Likes” are skewed to major comments on a Facebook post; 3489 posts are gathered from the New York Times Facebook page for 100 days. Results show that time is not an influential factor for skewness increase, but the number of comments has a logarithmic relation to skewness increase. Regression models and Chow tests show that this relationship differs depending on topic contents, but majority opinions are significant in overall. These results suggest that the bandwagon effect due to social affordance can be a suitable mechanism for explaining majority opinion formation in an online environment and that majority opinions in online communities can be misperceived due to overestimation.     

上海市公共体育设施建设效应评价研究

上海市公共体育设施建设的主要矛盾是市民日益增长的多元化体育需求和公共体育设施建设不平衡、不充分发展之间的矛盾。作为迈向卓越的全球城市，上海正为向市民提供多元化需求的公共体育设施而努力。本文根据“30分钟体育生活圈”的要求，对上海市公共体育设施建设效应进行研判，得出：（1）上海市公共体育设施布局呈现等级性，空间上呈现“中心-外围”特征，形成了“市-区-街道”三级空间尺度的公共体育设施空间布局。（2）上海市公共体育设施空间布局与人口密度分布呈正相关关系。健身点密度、市民球场、市民健身房、市民健身步道与人口密度分布呈现较强的正相关关系；农民健身工程与人口密度分布呈现较强的负相关关系。（3）上海市公共体育设施密度区域差异显著。公共体育设施建设正处于数量增加向质量提升的过渡阶段，正建设与卓越的全球城市和社会主义国际化大都市相匹配的公共体育设施与配套服务。（4）上海市公共体育设施建设总体评价较好，但存在难以满足多元化需求等问题。调查显示，居民对上海市公共体育设施建设的总体评价较好，满意度评价较高，但未满足个性化、多元化需求，在软件环境建设上仍有很大提升空间。     

大学生群体极化现象的社会心理学分析

群体极化现象是指群体成员一开始具有某种偏向,在经过讨论后群体朝偏向的方向继续移动,直至形成极端的结果。大学生是一个特殊的群体,他们朝气蓬勃、富于激情,看重个人名誉,充满正义感,具备较强的集体观念,组织性纪律性强。大学生的这些特征也使得这一群体在事实上更加容易发生极端化的情况。防治大学生群体极化要从重视传统,加强极端化后果教育,注重观点和意见的多样性与平衡,融入协商民主理念等多个方面共同着手。     

Until when does the effect of age on academic achievement persist? Evidence from Korean data

According to an analysis of Korean student panel survey data, monthly differences in age had a significant influence on academic achievement until middle school (lower secondary education). However, this age effect did not persist when students graduated from high school (upper secondary education). Furthermore, some evidence is found that younger students, upon entering high school, were more likely to concentrate on academic studies, and less likely to experience minor distractions, thereby compensating for their poor academic achievement in middle school.     

影响高职思政课学生学习效果的关键因素与对策

高职思想政治课的学习效果直接关系到立德树人这一根本任务的落实。在影响高职思想政治课学习效果的诸多因素中,学生自身需求是关键因素。针对这一关键因素,高职思想政治课教师需要综合运用多种措施满足学生需求,提高思想政治课学习效果,真正落实立德树人的根本任务。     

How to detect indications of potential sources of bias in peer review: A generalized latent variable modeling approach exemplified by a gender study

The universalism norm of the ethos of science requires that contributions to science are not excluded because of the contributors’ gender, nationality, social status, or other irrelevant criteria. Here, a generalized latent variable modeling approach is presented that grant program managers at a funding organization can use in order to obtain indications of potential sources of bias in their peer review process (such as the applicants’ gender). To implement the method, the data required are the number of approved and number of rejected applicants for grants among different groups (for example, women and men or natural and social scientists). Using the generalized latent variable modeling approach indications of potential sources of bias can be examined not only for grant peer review but also for journal peer review.     

艾滋病药品试验分析与预测

对治疗艾滋病的药品进行试验是医学界一直探讨的重要内容。本文结合2006 年全国数学建模竞赛本科组B 题的数据, 采用距离分配增量和曲线拟合的方法, 对300 多名艾滋病患者同时服用三种药物后的CD4和HIV 的周平均增量进行了分析, 预测了继续服药后的效果, 确定了最佳的停药时间。     

政府组织规模的内涵及其扩张

如何把政府组织规模控制在适度的范围,始终是世界各国行政改革所追求的目标之一。从宏观上看,政府组织规模涉及到政府组织与市场、社会之间的关系问题。从微观上,政府组织规模涉及其职能规模和数量规模,职能规模揭示了政府组织的内在规模,属于定性探究和实践的范畴,而数量规模则反映了政府组织的外在形式。一方面,政府组织规模的扩张具有合理性,但在另一方面,政府组织规模的过度扩张则会产生诸多负面效应。     

活动积温及其不等效性研究

本文从农业生产的角度出发,提出等效积温的概念,从理论上分析了活动积温与等效积温的关系和海拔高度对气温等效性的影响.以等效积温取代活动积温更能反映气温与农业景观的关系.