“互联网+”视域下大学生就业指导及价值取向引导策略研究

在信息化时代中如何利用信息技术做好大学生就业指导工作是对高校就业工作者的重要挑战。当前,“互联网+”视域下,应从思想引领、顶层设计、跟踪服务等方面研究大学生就业价值取向引导和就业指导的有效策略,引导大学生树立正确的就业观,提升就业竞争力。     

从近两届世界大赛看男子竞技体操发展趋势

通过文献资料、录像观察与数理统计等方法,系统分析了当前世界男子竞技体操运动各单项的发展趋势。结果表明单项比赛的竞争更加激烈。指出在今后的训练中,应突破重点项目,发展难、新、美动作,加强运动员动作的规范性和完成动作的稳定性训练,＂以老带新＂、＂以赛代练＂,注重心态把握。     

第41届世界体操锦标赛男子体操比赛成绩分析

通过对第41届体操锦标赛男子体操比赛成绩的统计,分析了世界体操强国在新规则下的整体实力,了解目前各体操强国的现状,为中国体操队实现2012年伦敦奥运会夺取更多的金牌提供参考。     

MCM-41中孔分子筛的全微波法合成及其表征

中孔分子筛的合成已进入了一个全新的时期,合成方法日新月异。本文首次在不需任何助表面活性剂的条件下,用全微波的合成方法（即ＭＣＭ－４１的合成和模板剂的烧除均在微波辐射的条件下完成）合成了ＭＣＭ－４１中孔分子筛,并应用ＸＲＤ、ＩＲ、ＴＧ和ＳＥＭ等方法对样品进行了表征。结果显示,此法比以往常规水热合成法具有合成时间短,晶化时间１０－１５ｍｉｎ,焙烧模板剂１ｈ左右。所得产品晶粒分布均匀,晶形以球状为主,晶粒大小约１０μｍ等优点。全微波合成法工艺简单,操作方便,产品收得率高,它将为ＭＣＭ－４１中孔子筛的快速合成探索出新的途径     

Am I missing something? The effects of absence from class on student performance

We analyse a rich dataset of Economics students at a UK university to identify causal effects of class absence on student performance, exploiting the random assignment of students and information on students’ class timetables to avoid selection problems. We use panel properties of the data to control for unobserved student factors such as ability and effort. Quantile regression results suggest that absence has adverse effects on performance – but these effects are causal only for the upper part of the conditional performance distribution.     

多晶含铜MCM-41型纳米材料的合成研究

将铜稳定、均匀分散在MCM 41型中孔材料的结构中 ,可充分发挥铜活性中心的催化活性。特定条件下 ,采用季铵盐类模板剂 ,在正硅酸乙酯 (TEOS)的水解聚沉时 ,向材料的结构中引入金属铜源 ,成功合成了分子自组装Cu MCM 41型分子筛。经XRD、FT IR、ED、HTEM、TG DTA分析 ,证实了样品属多晶态纳米材料 ,铜的骨架含量及脱模条件如焙烧温度、焙烧时间 ,对材料结构的稳定性及中孔有序度均有较大影响。     

Strategic interaction among public school districts: Evidence on spatial interdependence in school inputs

This paper provides evidence on strategic interaction among public school districts in Massachusetts. The open enrollment program in Massachusetts is unique in testing the strategic competition thesis because it allows students to attend public schools located outside their home district. For each student who transfers out, funds are deducted from the sending district's local aid distribution and added to the receiving district's local aid. Thus, school districts no longer have the assurance of a ready supply of students and funding, instead they have to compete with neighboring districts, and enact strategies that will help retain as well as attract more students. A spatial econometric framework is applied to disentangle the correlation due to strategic interaction from the one that is simply due to spatially correlated error shocks. The results show that public school districts respond positively to the expenditure decisions of neighboring districts, thereby acting strategically when setting their own spending levels.     

The effect of community college enrollment on bachelor's degree completion

Rouse [Rouse, C. E. (1995). Democratization or diversion—the effect of community-colleges on educational-attainment. Journal of Business and Economic Statistics, 13(2), 217–224] finds that enrollment in a community college may divert students from attaining a bachelor's degree. However, this result may be due to selection bias, as the population of community college students should be quite different from those who attend 4-year institutions in terms of both observable and unobservable characteristics. This study uses propensity score matching to non-parametrically balance a data set from the 1996 Beginning Postsecondary Students survey in order to overcome issues associated with selection bias. Results from a Cox proportional hazards model indicate that attendance at a community college lowers the hazard rate for completing a bachelor's degree. The results are consistent with previous studies.