Anticipated foreign military threat, arms accumulation, and the current account in a small open economy

This paper examines the effects of an anticipated foreign military threat on consumption, the home weapons stock, and net foreign asset position in a small open economy. If the utility function is separable between butter and guns, the economy decreases both butter and guns when the news arrives, accumulates foreign assets prior to the foreign threat realization, and increases guns as the foreign threat realizes. If the utility function is nonseparable between butter and guns, the economy may have two dynamic responses. The first is similar to the separable case, except that consumption exhibits a discrete jump when the foreign threat realizes. The second is that the economy increases both butter and guns on impact, decumulates foreign assets prior to the foreign threat implementation, but either increases or decreases guns as the foreign threat realizes.     

Pre-positioning hurricane supplies in a commercial supply chain

Inventory control for retailers situated in the projected path of an observed hurricane or tropical storm can be challenging due to the inherent uncertainties associated with storm forecasts and demand requirements. In many cases, retailers react to pre- and post-storm demand surge by ordering emergency supplies from manufacturers posthumously. This wait-and-see approach often leads to stockout of the critical supplies and equipment used to support post-storm disaster relief operations, which compromises the performance of emergency response efforts and proliferates lost sales in the commercial supply chain. This paper proposes a proactive approach to managing disaster relief inventories from the perspective of a single manufacturing facility, where emergency supplies are pre-positioned throughout a network of geographically dispersed retailers in anticipation of an observed storm's landfall. Once the requirements of a specific disaster scenario are observed, supplies are then transshipped among retailers, with possible direct shipments from the manufacturer, to satisfy any unfulfilled demands. The manufacturer's pre-positioning problem is formulated as a two-stage stochastic programming model which is illustrated via a case study comprised of real-world hurricane scenarios. Our findings indicate that the expected performance of the proposed pre-positioning strategy over a variety of hurricane scenarios is more effective than the wait-and-see approach; currently used in practice.     

内生增长理论的生成机理研究

对传统生产方式内在限制的发现促成了依靠知识进步带动现代经济增长的努力; 通过对不同增长速度来源的分析导致内生经济增长理论的形成; 发展经济学家关于复兴开发教训的研究进一步证实“知识进展是长期的真实的生产率提高的基本要素”。知识经济实际上是一种“内生的经济增长方式”。与此相适应, 内生增长产生了一组新的政策结构。     

构建和谐劳动关系 促进企业稳定发展探讨

劳动关系是最基本的社会关系是构建和谐社会的基石,同时也为企业发展营造了一个健康、稳定、和谐的环境。随着社会主义市场经济体制改革不断深入,社会各领域市场竞争力日渐激烈,企业若想在市场中更好的立足和发展,就必须通过相关措施,构建和谐劳动关系,促进企业稳定、可持续发展。     

当前大学生职业生涯规划教育存在的问题与对策分析——以黑龙江科技学院例

随着高校扩招以及经济大环境的不断起伏,大学生的就业越来越受到社会各界的关注,目前的毕业生就业市场上出现了很多"先就业后择业"的情况发生,当前国内很多高校已经开展了职业生涯规划教育等课程,本文以黑龙江科技学院开展职业生涯规划教育课程为例,以问卷调查的方式分析了当前大学生职业生涯规划教育存在的问题及其对策。     

试论信息时代下如何加强企业财务管理内部控制

信息技术高速发展,把整个地球连接成了地球村,对企业的财务管理也提出了更高的要求,在信息技术的大背景下,如何保证企业财务管理内部控制制度的有效开展,成为我们当今社会应该研究的课题,本文从信息化时代对企业财务管理带来的影响入手,论述了信息化时代背景下如何加强企业财务管理内部控制的具体措施.     

Comparative advantage and unemployment

Worker heterogeneity in productivity and labor supply is introduced into a matching model. Workers who earn high wages and work high-hours are identified as those with strong market comparative advantage—high rents from being employed. The model is calibrated to match separation, job finding, and employment in the SIPP data. The model predicts a big drop in employment for workers with weak comparative advantage during recessions. But the data show that workers with strong comparative advantage also display sizable employment fluctuations, implying that aggregate employment fluctuations are not explained by the responses of workers with small rents to employment.     

信阳农村留守儿童教育问题调查

<正>随着社会的不断发展和城市化进程的不断推进,农村剩余劳动力大规模涌入城市,并衍生出大量留守儿童,使城市流动人口急剧加速的同时,大量的农村留守     

Off‐farm work,technical efficiency,and rice production risk in Taiwan

This article investigates the differences in yield production, production efficiency, and yield risk for farmers both with and without off‐farm work. Using a nationwide survey of rice farmers in Taiwan, we estimate two stochastic production frontier models that accommodate technical inefficiency and production risk simultaneously for farmers both with and without off‐farm work. The stochastic dominance criterion is then applied to compare the differences in the distributions of the estimated technical efficiency and yield risk between groups. The empirical results indicate that these two groups of farmers use resources in different ways, and off‐farm work is not necessarily associated with lower technical efficiency. For farmers in the lower percentiles of the efficiency distribution, those with off‐farm work are more efficient than their counterparts without off‐farm work. In addition, farmers with off‐farm work face higher production risk and this result is robust for the entire distribution.     

关于粗糙模糊支持向量机的探索

基于粗糙集理论和模糊支持向量机思想,提出了一种新的支持向量机模型-粗糙模糊支持向量机(RFSVM).采用UCI机器学习数据库中的数据,对比实验,RFSVM比传统支持向量机(SVM)和模糊支持向量机(FSVM)都有明显高的测试精度.