网络考试系统中的命题库设计与组卷算法——以“计算机应用基础”课程为例

以＂计算机应用基础＂课程的网络考试系统开发为基础,讨论了使用面向对象分析方法建立与改进命题库数据模型并将其映射为关系模型的过程。该命题库是网络考试系统的关键组成部分即题库子系统中的核心内容。最后,在网络考试系统组卷功能的实现方面,给出了随机组卷算法的具体实现。     

从用人单位英语需求角度看高职英语课程改革

通过分析用人单位对应聘者英语水平的要求情况,结合目前高职英语课程设置的状况,提出了高职英语课程改革的可行性建议。为使高职毕业生的英语水平达到用人单位的需求,应引入多元化英语测试体系,采用＂1＋X＂课程设置模式,积极推广职业英语。     

U.S. and Latin American stock market linkages

This paper examines to what extent the Latin American equity markets of Argentina, Brazil, Chile and Mexico have become more integrated with the US equity market. We empirically measure integration by finding the dynamic conditional correlation (DCC) between each market and that in the U.S. using a DCC multivariate GARCH model. We then track how these correlations evolve over time using a smooth transition model which not only shows when greater integration first occurred but also how long it took these correlations to transition to their new levels. Our sample period stretches from December 30th, 1988 to March 26th, 2004. Results show an increase in the degree of co-movement between these countries’ equity returns and those in the U.S. although the magnitude and speed of these increases greatly varies across these four countries.     

金融开放背景下金融发展对跨境资本流动的影响研究

金融开放能够促进跨境资本流动,也具有引发跨境资本流动失衡和波动性增加的风险,而一国金融发展水平在其金融开放效应中发挥着重要作用。本文基于58个国家及地区1999-2016年的数据建立动态面板模型,研究金融开放背景下金融发展对直接投资和证券投资流入、流出以及总跨境资本流动波动性的影响。研究结果表明:金融开放本身有可能造成跨境资本流出大于流入的失衡现象,并显著增加跨境资本流动波动性风险,而金融发展水平的提高有助于在一定程度上抑制金融开放带来的跨境资本流动失衡现象和波动性风险。因此,在扩大金融开放进程中,为获得跨境资本流动的积极效应,应密切关注跨境资本流向和资本波动性变化,提高国内金融发展水平,使之与金融开放水平相匹配。     

基于投资效能的分配决策模型在工程建设投资决策中的应用

在基于投资效能最大化的基础上,对工程建设投资分配模型的建立进行了初步的分析,为提高投资分配的决策提供了科学依据。     

Recursive Nash bargaining over a productive asset

We propose an equilibrium concept (the recursive Nash bargaining solution) that describes the outcome of repeated negotiations between two rational agents under the assumptions that the state of the economic system under consideration changes according to the actions of the players and that neither party can make binding commitments to future behavior. This equilibrium is dynamically consistent but typically not Pareto-efficient. As an application, we compute the recursive Nash bargaining solution in a model of two heterogeneous agents bargaining over the use of a productive asset with constant gross rate of return and study how the time-preference rates and the elasticities of substitution affect the solution.     

经贸往来会推动社科学界的国际合作吗？--来自引力模型的证据

合作研究在当代学术界渐渐替代了独立研究,成为当前研究的主要类型之一,而且随着前沿领域的进一步扩展,研究创新的难度进一步提升,跨国的合作研究也愈发重要。选择2004～2010年间SSCI论文作者所在机构的国别,通过引力模型实证检验了贸易往来对于论文合作的推动作用。同时分析了双边贸易协定、产业结构趋同与发展水平的趋近等因素的影响,发现这些因素都会对学界的国际合作产生正向影响。     

土地监察博弈与策略抉择

违法用地问题,一直是当前国家土地管理中的热点和难点问题。针对当前违法用地的现状,文章提出了土地监察员和地方政府之间的监察与反监察的博弈观点,并建立了他们之间的博弈模型。通过分析模型中的有关参数,提出了解决违法用地监察中信息不对称问题的方法,并探究了国家减少违法用地行为的对策和措施。     

A model of adjuncts in higher education

We examine the phenomenon of the expanded use of non-tenure-track positions (“adjuncts”) and construct a supply-side Harris–Todaro model. Low adjunct wages are attributable to a “Hope Rent” from the gap between private opportunities and tenure-track utility.