Does Facebook Use Predict College Students’ Social Capital? A Replication of Ellison,Steinfield, and Lampe’s (2007) Study Using the Original and More Recent Measures of Facebook Use and Social Capital

In 2007 Ellison, Steinfield, and Lampe published an article on the positive association between Facebook use and social capital that started a decade of research on the social outcomes of social network site use. Although cited almost 9,000 times, it received critique on the conceptualization and operationalization of Facebook use and social capital. In this study we replicate Ellison et al.’s study with original and alternative measures of social capital and Facebook use, thereby shedding light on the robustness, stability, and ecological validity of the original findings. We found that Facebook intensity positively predicts the original social capital measures, lending support to the validity of the original findings. Its relationship with structural measures, however, was weak for bridging and absent for bonding social capital.     

太阳能多晶硅铸锭用熔融石英坩埚氮化硅涂层的制备

熔融石英坩埚是生产太阳能多晶硅铸锭的必要容器,为脱模方便,需在其内表面喷涂一层氮化硅．采用高纯氮化硅粉在国产石英坩埚上喷涂,研究喷涂氮化硅浆液时石英基底温度和涂膜厚度对石英坩埚氮化硅涂层结合强度的影响．结果表明：采用高纯氮化硅粉喷涂石英坩埚基底,温度应在40℃以下且喷涂涂层厚度不宜超过80μm．     

加强工程保证担保市场监管工作的思路和对策

工程保证担保市场是一个经营信用风险的市场,保持担保主体的信用是这一市场赖以存在的关键。为了保持市场担保主体的信用,防止因担保主体无力承担赔付责任而造成市场信用的崩溃,需要加强对工程保证担保市场的监督管理工作,制定相应的防范措施。     

基于瞬时液相扩散连接的多压力工艺模型

针对压力在瞬时液相扩散（TLP）连接不同阶段的不同作用,提出了多压力工艺模型。采用多压力工艺模型,在1230-1260℃,氩气保护,对T91钢管进行了瞬时液相扩散连接（TLP）,研究了多压力工艺模型下接头的力学性能和显微组织。结果表明：在多压力工艺模型下,T91钢管TLP接头的力学性能和显微组织远优于一般工艺。分析得出多压力工艺模型既能充分发挥压力在TLP连接中的作用,又能避免高压带来的不利影响。     

提高大口径PVC螺旋管粘接强度的措施

本文介绍了大口径PVC螺旋管生产的方法及存在的问题，通过分析，采用了在配方上减少软、硬料中的外润滑剂和对机头口模处进行改革的办法，有效地提高了PVC螺旋管的粘接强度。     

加强工程保证担保市场监管工作的思路和对策

工程保证担保市场是一个经营信用风险的市场,保持担保主体的信用是这一市场赖以存在的关键。为了保持市场担保主体的信用,防止因担保主体无力承担赔付责任而造成市场信用的崩溃,需要加强对工程保证担保市场的监督管理工作,制定相应的防范措施。     

Social adjustment and dynamics of segregation in higher education – Scrutinising the role of open-mindedness and empathy

Earlier research has suggested that ethnic minority students have a significantly lower chance of attaining academic success compared to their peers without an ethnic minority background. Numerous research has also illustrated the importance of social capital for being academically successful. In two studies we examine the particular role of interethnic interactions in the social and academic adjustment of students in higher education. We use a Flemish university as a case study. Study 1 (N = 1549) uses mediation analysis, and Study 2 (N = 2479) replicates the first study using SEM (structural equation modelling). We first found that social adjustment is necessary for adjusting academically, and that it has a small, but positive effect on study success. While adjusting socially by interacting with students from other ethnic groups is of little benefit to native Flemish students, the opposite is true for students with a migration background. Furthermore, the more open-minded native students are, the less socially adjusted they tend to be, and they seem to benefit from a more close-minded stance than from open-mindedness in terms of adjusting to the social (and academic) context of a university.     

父母教养方式对高中生运动员自我同一性地位的影响*

目的：：为了探讨高中生运动员自我同一性地位特征及父母教养方式对其影响,方法：以215名广东省省队高中生运动员作为研究对象进行问卷调查。结果：同一性扩散———积极的延缓中间地位的人数最多,高中阶段自我同一性的发展在性别、年级上均无差异;以父母教养方式为自变量,以同一性发展因素为自变量的回归分析,获得3个有意义的回归方程。结论：高中生运动员的同一性发展有自己的特点;父母的教养方式对高中生运动员同一性地位的形成有影响;母亲的关爱是影响同一性扩散———积极的延缓中间地位形成的重要因素,母亲的控制是影响同一性扩散———积极的延缓中间地位形成的关键因素。     

The prevention of child abuse and neglect: A review of the literature with recommendations for application

Families at high risk for inadequate parenting can be identified during the perinatal period, or during later health care visits. Effective intervention can be implemented for these special families. During the maternity ward stay, intervention can include early delivery room contact, rooming-in arrangements, and increased teaching sessions on child care. The primary physician can provide frequent office visits, telephone contacts and helpful advice during acute illnesses and developmental phases which might precipitate child abuse. The physician can seek assistance from outreach workers such as public health nurses, lay health visitors, and child welfare caseworkers. Community prevention programs such as parenting classes, Parent's Anonymous groups, crisis nurseries and crisis hotlines should also be integrated into the family's treatment. When provided in concert, these actions can stabilize most dysfunctional families.     

拓扑空间逆系统的基本性质

介绍拓扑空间的逆系统及其极限空间的一些基本性质,讨论了投射与键映射之间的关系及由逆极限空间的开子集诱导出的子逆系统的性质,最后给出了利用拓扑空间族逆极限性质推导其Tychonoff乘积性质的一个定理.