Squatting as a transition problem in South Africa

This paper applies principles of transition to land tenure and squatting in South Africa. Political transition in South Africa reassigned political property rights, which produced contestable, and rent‐seeking incentives for squatting as a means to privatize land and redistribute wealth. Government failure to establish and protect private property rights in a squatter camp resulted in common‐pool problems that resisted private and public resolution with consequent rent dissipation and social loss. In response to this retreat from duty, informal agents emerged to claim their own share of the prize. Without enforceable rules of capture, the growth of squatter camps in South Africa will continue. JEL classification: D7, H8, K1, K4, R1, R4.     

Endogenous Growth and Negative Externalities

Received March 5, 2001; revised version received August 5, 2002 Published online: April 30, 2003     

建立法人股东为主导的股权治理模式

股权结构是公司治理结构的基础,其设置状况是否合理对公司治理结构的效率有着决定性的影响.文章针对当前上市公司股权治理的弊端,设计出一种股权持有者多元化、股权集中程度分散化的股权结构,并提出我国上市公司应建立以法人股东为主导的治理模式.     

Public and Private Education in an Integrated Europe: Studying to Migrate and Teaching to Stay?

This paper investigates public and private choices between internationally applicable and country‐specific education when graduates are mobile. Human capital depends on innate skills and study effort with either type of education. It is shown that national governments provide too few students with internationally applicable education, and too many with country‐specific education. This effect is mitigated, but not entirely eliminated, by the introduction of a graduate tax, according to which graduates are required to pay part of their taxes to the country where they received their education, regardless of residence. However, private educational choices are socially optimal with suitably differentiated tuition fees.     

浅论乒乓球运动对全民健身的影响及作用

随着社会的不断发展和进步,人民生活水平的日益提高,健康已成为众人的追求目标。在不断增加的健身运动中,不受条件限制,运动量相对适中,又有娱乐性质的乒乓球运动逐渐被更多的人接受并喜爱。本文从运动生理学、人体解剖学的角度出发,从理论上阐述和剖析乒乓球运动的健身价值。     

Open access,common property and scarcity rent in fisheries

Open access resources are frequently not managed efficiently, resulting in falling stock levels and a declining income for fishermen. In the late 1970's, the policy response to this problem was the implementation of 200-mile fishing zones, which enabled the European Union to formulate and implement the Common Fisheries Policy, aimed at (among other things) conservation and distribution of available stocks. In Germany, this shift from an open access regime towards a common property regime had favourable outcomes. The trend of falling prices was reversed. The conclusion was that intertemporal efficiency had increased as a result of (inter)governmental policy. Apparently, a wedge was formed between price and marginal harvesting costs, implying that scarcity rent had returned as a component of prices.     

A Common Pool Resource Game with Sequential Decisions and Experimental Evidence

We describe a common pool resource game in which players choose how much of the stock to extract in a sequential manner. There are two choices and one represents taking a larger proportion of the stock than the other. After a player makes a choice, the remaining stock grows at a constant rate. We consider a game with a finite number of alternating moves. It is shown that changes in the larger proportion of the stock that the players are allowed to take and the growth rate affect equilibrium, but have little effect on behavior in the laboratory. In addition to observing more cooperation than predicted, we observe that parameters that are strategically irrelevant affect behavior. The results of this research might help policy makers in developing adequate policies to prevent overexploitation of some natural renewable resources.     

Sharing a River

A group of agents located along a river have quasi-linear preferences over water and money. We ask how the water should be allocated and what money transfers should be performed. The core lower bounds require that no coalition should get less than the welfare it could achieve by using the water it controls. The aspiration upper bounds demand that no coalition enjoy a welfare higher than what it could achieve in the absence of the remaining agents. Exactly one welfare distribution satisfies the core lower bounds and the aspiration upper bounds: it is the marginal contribution vector corresponding to the ordering of the agents along the river. Journal of Economic Literature Classification Numbers: D62, C71.     

混凝土质量通病产生的原因及处理办法和预防措施

混凝土成型的过程很复杂，要经过选料、配制、运输、浇筑、养护等多个环节，各环节又需多个指标控制，任何一个环节指标出现偏差、操作出现纰漏，都会有质量通病产生。如果不消除这些质量通病及混凝土缺陷，会直接影响到工程质量和结构安全，它分析了混凝土工程质量通病产生的原因，阐述了质量通病的处理办法，强调了如何预防质量通病的措施。     

一般城市融入都市经济圈一体化进程的路径选择

就都市经济圈内一般城市融入一体化进程的基本方向和主要路径进行分析,指出其具体的路径选择主要包括培育统一要素市场,对接产业分工与协作,融入都市圈快速交通圈,打造通用信息平台,遵循区域发展总体规划实施城镇体系发展分区规划,交流与共享人才资源,创新政府公共协调制度等方面.一般城市通过上述方式汇入都市圈一体化进程,以此实现整个都市圈,进而实现城市自身利益最大化的发展目标.