安徽省区域旅游发展的聚类分析

安徽旅游资源丰富,但在省内各区域的分布不平衡,且各区域旅游资源开发起步时间各异,因此区域间的旅游发展现状存在较大的差异。量化研究旅游发展的区域差异,进行横向比较,既可以看出安徽省整体的旅游发展格局,也能为各区域的旅游业发展规划提供参考依据。安徽省共有17个省辖市,以这17个市为区域单位进行研究,构造了旅游发展现状评价的三级层次指标体系,运用AHP方法确定各级指标的权系数,根据统计数据计算并聚类分析。研究表明,安徽省区域旅游现状大致可以分为6个等级:黄山市为第一等级;合肥为第二等级;池州市、安庆市为第三等级;芜湖市、宣城市为第四等级;滁州市、蚌埠市、六安市、阜阳市为第五等级,淮南市、巢湖市、宿州市、亳州市、淮北市、铜陵市为第六等级。     

一种多周期易腐品库存路径问题模型及其求解算法

通过分析一个供应商用多个相同车辆向多个客户配送一种易腐品,在随机需求下,满足多个周期中客户的服务水平、决策计划期内的配送路线和配送量,以库存持有成本、货损成本、运输成本最小化为目标,建立随机需求的多周期易腐品库存路径问题模型,将库存控制和运输问题整合优化。还针对该模型设计了一种改进的遗传算法,能够保证初始种群以及变异、交叉后的种群的多样性和优越性,有足够搜索全局最优解的能力。     

知识经济时代:传统经济学面临挑战

知识经济的迅猛发展 ,引起了整个社会生产和生活的巨大变革 ,传统经济学也面临挑战 ,在诸如经济学的基本假设、基本原理、微观和宏观经济等方面都显示了一些新的经济现象和经济规律 ,它表明 ,传统经济学需要修正、补充和创新。     

An Entrepreneurial Perspective of Institutional Change

Utilizing Kirzner's theory of entrepreneurial discovery, Schumpeter's two types of economic responses and the Austrian theory of institutions as building blocks, this paper constructs an entrepreneurial theory of institutional change. Focusing on the coordinating role of human institutions, this paper argues that entrepreneurial extraordinary discovery destroys the stability of institutions and creates uncertainty in the market (creative response). As a result, institutions are incapable of coordinating economic activities because market participants' stocks of knowledge are no longer adequate to solve new problems. Hence, profit gaps or mismatches of market participants' plans occur. Given new technologies, new relative prices and tastes, imitative entrepreneurs soon identify and capitalize on the opportunities created by Schumpeterian extraordinary discoveries (adaptive response). Imitators improve production methods, modify rules and alter property rights in order to improve coordination. Through learning, experimentation, trial and error, the more rewarding methods are then selected. Successful actions are imitated and repeated in the market, and gradually crystallized into new institutions which once again serve as social coordinators.     

Abuse of Market Dominance Under China’s Anti-Monopoly Law: The Case of Tetra Pak

Review of Industrial Organization - In this paper, we analyze a recent antitrust case of abuse of dominance that was decided by a Chinese administrative enforcement agency under China’s...     

我国服务业FDI结构、技术进步与经济增长

服务业外商直接投资可分为生产性服务业外商直接投资和消费性服务业外商直接投资,二者对国家经济增长有着不同的影响。本文从技术进步的角度,利用面板模型,研究了我国不同类型服务业外商直接投资对经济增长的影响,并分别讨论了东西部地区服务业外商直接投资对技术进步和经济增长的差异性影响。研究结果表明生产性服务业外商直接投资对经济增长和服务业技术进步均有明显促进作用,消费性服务业外商直接投资对经济增长有促进作用,但对服务业技术进步有阻碍作用,且这一趋势在我国东西部地区之间存在显著差异。     

欠发达农村生态治理创新--以甘肃为例

综合人口结构、民族分布、地理环境来看,甘肃的生态屏障战略地位凸显.老庄、孔孟等先贤奠定了生态治理的思想基础,之后与时俱进地变迁,政府的践行力度也持续强化,然而现实农村生态情况不容乐观,甘肃的形势也十分严峻.从公共治理理论出发,主要有三个方面的深层动因：企业逐利罔顾其他,政府绩效考核缺陷,农户人为加剧破坏.新农村生态治理亟待创新：以地方政府为主导力量、以乡镇企业为重点客体、以社会组织为桥梁纽带、以个体农户为核心依靠,综合多种手段统筹保护、恢复、建设,实现生态、经济、社会三维效益的整体优化.     

沙井子灌区棉花滴灌设计中日耗水强度的确定

依据1992年联合国粮农组织提出的最新修正彭曼-蒙特斯公式,采用沙井子灌区气象站近十年逐日气象资料,计算出参考作物蒸散量,利用距离本灌区最近的国家灌溉试验站(焉耆灌溉试验站)提供的棉花作物系数对参考作物蒸散量进行修正,得出沙井子灌区棉花生育期逐日的耗水量.对该数据统计分析,即可得出棉花生育期的月均耗水量的峰值-日耗水强度.     

Overinvestment and the Operating Performance of SEO Firms

Prior studies have documented that firms' operating performance deteriorates following seasoned equity offerings (SEOs). This paper proposes and empirically tests the hypothesis that this poor performance is the result of managers' overinvestment. I find that, subsequent to the offering, SEO firms tend to invest more heavily than nonissuing control firms that are in the same industry and have enough financial slack and similar investment opportunities. More importantly, I find a negative correlation between postissue investment and operating performance, controlling for investment opportunities and preissue performance. Overinvestment results in a reduction in asset productivity and is more severe for firms with relatively fewer investment opportunities.     

从中国医药卫生体制改革看卫生教育的发展方向

新医改方案的出台,对卫生管理人才队伍建设和医学教育发展提出了更高的要求。新医改方案并不是最终的方案,需要不断地试点、摸索,加大对卫生管理人才队伍建设是当务之急。探讨我国卫生教育的发展方向,提出应大力培养医学创新人才和应用型卫生管理人才,加强人文素质教育,并使中医教育回归。