Effects of curricular emphasis in college on the GRE and its impact on the gender gap in performance

Previous research has indicated positive relations between a curricular emphasis during college and improvements in GRE performance for content that matches that emphasis. However, measurement issues and a lack of a theoretical approach have contributed to a lack of precision and detail in the estimates of the relation between college experiences and performance for relevant content. In the current study, we hypothesized that differences in training between students majoring in math related majors and students majoring in reading and writing related majors would be differentially related to the size of the changes on GRE performance. Further, we hypothesized the gender gap in GRE-Quant performance would be reduced when the higher likelihood of males majoring in math related majors was modelled. The expert performance approach was used to develop three path models (including curricular emphasis, college grade performance, previous performance on the SAT, and gender) to compare the effects of the relation of a curricular emphasis in math on GRE-Quant performance to the effects of the relation of an emphasis in reading and writing on GRE-Verbal performance. The results indicated support for our predictions that a math course emphasis was related to larger GRE performance gains and that gender differences in curricular emphasis during college partially mediated the large gender gap in GRE-Quant performance. Additionally, higher grade performance average was found to positively predict GRE performance with college experiences and previous performance statistically controlled. Implications for the relation between training accrued during college courses and changes in GRE performance are discussed.     

基于多维灰关联熵模型的高科技产业绩效评价研究

目前,高科技产业(Hi-Tech Industry)的成长与发展对于区域创新和国家创新都具有极其重要的战略意义,但由于高技术产业在技术创新和投资中的高风险,其产业结构的变化具有极大不确定性.构建多维熵变复合模型,以辽宁省为例全面地揭示高科技产业发展规律,即要实现高科技产业高效成长,就必须通过各种"负熵"的大力引进,使整个系统处于低熵运行状态,通过系统整体的"巨涨落"导致系统发生突变,达到更高层次的稳定有序状态.     

虚拟专用网中的隧道技术研究

虚拟专用网(VPN)代替传统拨号网络和租用线路实现企业与企业之间,企业的分支机构之间以及企业与其雇员之间的信息交换是当前的一种趋势,而隧道技术是实现VPN的关键技术.本文结合VPN的实现要求,对现有的一些隧道协议(包括GRE,L2TP,IPSec和IP/IP)进行了比较研究,并且提出了在现有条件下实现VPN的隧道协议的集成方案.,It is a trend of virtual private networks (VPNs) to be used for information exchange between enterprises, branches of enterprises and enterprises and their employees instead of traditional dial networks and leased lines. The tunneling technique is the key technique to implement VPN. In this paper, with the VPN implementation requirements in mind, we perform a comparative research on the existing tunneling protocols including GRE, L2TP, IPSec and IP/IP. We also propose an integrated scheme of tunneling mechanism that supports VPN under the current condition.     

多区域分布式网络互连的设计与实现

为解决某大型企业跨Internet的内部网络互连问题,本文在基于IPSec保证数据安全传输的基础上,为该企业提出了点到点的GRE隧道、DMVPN、DVPN三种解决方案及实现方法,可使其所使用的动态路由协议OSPF跨Internet安全地传输,并分析了这三种方案各自的优缺点及适用场合。     

利用L2TP技术构建VPN虚拟网

分析了L2TP技术的原理及使用L2TP技术构建家庭办公虚拟网的优点.提出了使用L2TP技术构建VPN虚拟网的解决方案.     

社会认知视野的自我参照效应相对性哲学辨析

通过对自我参照效应相关研究的分析和总结,探讨了个体、群体、本体自我三个层面的自我参照效应,包括自我参照效应的概念、研究范式、研究对象等.进而从对立统一规律的视角归纳出自我参照效应的相对性,指出了自我参照效应研究中的不足及其展望.     

基于GRE over IPSec VPN技术实现异地网络互连

随着公司规模的不断扩大,很多公司成立了分支机构,为了实现网络资源共享,需要对公司总部与分公司局域网之间的网络互连进行研究。利用GRE over IPSec VPN技术既可以实现异地网络互连,同时又可保证内部保密数据安全地在网络中进行传输。     

基于GNS3的IPv6隧道技术配置与实现

计算机网络由Ipv4技术向Ipv6技术过渡是发展的必然趋势,这个过渡过程同时是一个循序渐进、相互共存的过程。IPv6过渡技术包括双协议栈技术、隧道技术和网络(协议)地址转换技术3类。GNS3是一款专业的路由器交换机模拟软件,为学习计算机网络技术配置、排除网络故障提供了网络模拟环境。本文主要介绍目前两种最主流的隧道技术的在GNS3软件上的配置与实现。     

Testing the Predictive Validity of the GRE Exam on Communication Graduate Student Success: A Case Study at University at Buffalo

GRE scores for entering M.A. and Ph.D. students in Communication at University at Buffalo from 1990 to 2001 were used to predict graduate student success. Graduate student success was measured in two ways: grade point average (GGPA) and graduation rates. Preliminary analyses on Master's students (M.A.) revealed that international students, compared to domestic students, earned lower GRE verbal (GRE-V) scores, higher GRE quantitative (GRE-Q) scores, had higher undergraduate grade point averages and were more likely to graduate from the program (82% vs. 49%). Only GRE scores were different for International vs. Domestic students when examining doctoral students. For M.A. students, GRE-V was positively correlated with GGPA and GRE-Q was positively related to earning the M.A. degree. Regression analyses controlling for several factors, including domestic student status, found only undergraduate GPA to predict GGPA and graduation for M.A. students. GGPA and GRE-V predicted graduation rates for M.A. students when GGPA was included in logistic regression analysis. GRE, GPA, and GGPA failed to predict Ph.D. success when examined together.     

基于GRE over IPSec的多区域分布式网络互联

本文使用GRE over IPSec技术,为分布在3个城市的某大型设计公司解决了其内网的跨区域互联问题,使其所使用的动态路由协议OSPF在基于IPSec的GRE隧道中安全传输,并在分公司的防火墙上使用了路由重发布技术,实现了该公司全网互通、数据安全传输。