芯钢管混凝土节点的芯管壁厚与节点承载力关系的数值分析

对一种已经通过试验研究的钢管混凝土结构的新型节点进行数值分析。这种节点将钢管混凝土柱的钢管在节点区间断,在节点区设置芯钢管,使梁中的纵筋在节点中直通、梁与节点区混凝土成为一体可靠的传递梁中的弯矩、剪力及轴力。本文利用数值分析弥补模型试验数量少的缺陷。选择不同芯钢管壁厚的节点模型进行非线性有限元分析,得出芯钢管壁厚对节点承载力的影响规律。分析结果表明芯钢管壁厚是影响节点承载力的主要因素之一。     

The lexicographic composition of abstract games

The lexicographic composition of reflexive and complete binary relations (which are often called abstract games) is studied. The necessary and sufficient conditions are obtained for a lexicographic composition of quasi transitive relations to be quasi transitive.The case of acyclicity of lexicographic composition of two relations is also investigated. Received: September 25, 2000; revised version: November 28, 2000     

Inter-local relations and trans-scaling through finance in Poland

Inter-local cooperation is difficult to measure. In Poland, however, the data-set concerning financial transfers between local government budgets (one of the most popular quantitative measures of cooperation) has never been described in scientific literature. This paper aims at contributing to fill this gap. On the basis of the budget expenditures of all Polish local governments, we applied two research methods: OLS regression and Heckman two-stage regression. The results show that the decision whether to get into cooperation, and the decision on the extent of involvement are driven by different factors.     

Fiscal federalism in rentier regions: Evidence from Russia

When does sub-national fiscal autonomy prompt regional growth and recovery and, under what conditions, does it have adverse effects? We argue that unearned income streams, particularly in the form of revenues from natural resource production or from budgetary transfers from the central government, transform regions dependent on these income sources into rentier regions. Governments in these regions can use local control over revenues and expenditures to shelter certain firms, i.e., natural resource producers or loss-making enterprises, from market forces. Using fiscal data from 80 Russian regions from 1996 to 1999, we test this hypothesis in both cross-sectional and panel specifications. Our results indicate that tax retention, which is a proxy for fiscal autonomy, has had a positive effect on regional reform and investment since the break-up of the Soviet Union. However, we also find that this effect decreases as rentable income streams to regions increase. Journal of Comparative Economics 33 (4) (2005) 814–834.     

上市公司的关联交易及其信息披露

本文分析了上市公司的关联方关系和关联交易,针对目前存在的上市公司关联交易信息披露问题,提出了一些对策及解决办法。     

A multiregional model of China and its application

China's rapid economic transformation since 1979 has been accompanied by a stark regional disparity with the coastal provinces integrating swiftly into the world markets while inland regions lagging far behind in the industrialisation process. The growth imbalance has placed China's provinces into different stages of development and called for different policy responses to deal with different challenges they are facing. Similarly, a national policy initiated by the central government is likely to be interpreted and implemented in different ways when local governments take into consideration the different conditions in their localities. Therefore, it would be extremely valuable for policy makers and researchers to have an analytical tool that is capable of studying interactions among the provincial economies and the dynamic relationship between the centre and local governments. The multiregional econometric model of China presented in this paper is the first attempt to provide such a tool. The pioneering model consists of over 1200 equations, covering 30 provinces of China that are linked by inter-regional flows of goods and services. The model is used to study the impact of fiscal recentralisation in the 1990s. The counterfactual simulation results show that when China's central government diverted tax revenue from provincial governments, it achieved higher budgetary revenue for the central government but at the expense of lower overall budgetary revenue and slower economic growth.     

关于我国企业目前实施CRM的理性思考

在绝大部分市场领域中 ,顾客已取得绝对的支配权。作为一种新兴的竞争手段 ,客户关系管理 (CRM)正备受瞩目。然而 ,作为一种先进的管理技术 ,ERP在中国的实施情况至少可以说是远远低于理论界和企业界的预期 ,ERP是CRM的物质和思想基础 ,同时CRM相对于ERP的实施具有更大的不确定性 ,这一不确定性主要来源于市场的不确定性。面对CRM的兴起 ,我们是否必要、是否有能力引进和实施CRM系统 ,还需要对实施CRM的成本收益和环境约束作出详细的分析。     

Modeling and Measuring Economic Reality: Reply to the Reviews

To begin with, we'd like to express our appreciation to our three commentators for their thoughtful and helpful reviews. Like the founders of the subject, we believe, and our reviewers seem to agree, that structural econometrics has the potential to enable us to develop serious working models of how different economies actually operate, and also to tell us something about the changing patterns of their growth and transformation. But both we and our reviewers agree that there is a great deal wrong with the way econometrics is practiced today.     

Beyond Asymmetry: Substantive Beliefs in Preference Formation and Efficiency of Asymmetrical Negotiations

Contrary to extant propositions on the primacy of trade dependency in compelling faster agreement by subordinate states in asymmetrical economic negotiations, in the European Union–Africa, Caribbean and Pacific (EU–ACP) Economic Partnership Agreement (EPA) negotiations, it is the states that were least materially vulnerable that were quickest to accept an EPA. Why so? I argue that the speed and propensity of ACP states to accept and ratify their EPAs were principally hinged on variances in preference formation based on what Ikenberry and Kupchan [(1990), ‘Socialization and Hegemonic Power’, International Organization, 44 (3), pp. 283–315: 283] call ‘substantive beliefs rather than material payoffs’. The quickest states to ratify an EPA were those which most intensely shared the EU's neoliberal belief in an automatic correlation between trade liberalisation and economic growth, rather than those that were most materially vulnerable. Therefore, by taking the normative sources of preference formation by subordinate states seriously, we can not only derive a parsimonious explanation of EPA negotiating efficiency but also form a foundational conceptual model of predicting efficiency in asymmetrical negotiations that unifies the role of both normative and material considerations.     

The Sexual Economy,Gender Relations and Narratives of Infant Death on a Tomato Farm in Northern South Africa

Based on an extended case study of a large‐scale tomato farm in northern Limpopo province, the paper examines how the restructuring of agriculture transforms the sexual economy through shifts in the composition of labour and management practices on farms in this area. The employment of Zimbabwean migrants, rather than relatively permanent Venda families, suggests a potentially greater variety of people participating in the sexual economy. While families as units of employment have declined, black supervisors increasingly serve as a primary locus of coercion on the farm and in the sexual economy. The monetization of erstwhile paternalistic services places pressure on women to earn income however they can, including transactional sex. Contested interpretations over the causes of infant deaths on the farm, in the form of hygiene, blood‐mixing and infanticide, provide an ethnographic framework for a deeper analysis of the sexual economy and its social effects. While the sexual economy presents opportunities for women to increase their income, it also exposes them to the risks of HIV/AIDS and unwanted pregnancies, resulting in contradictory implications for the status of women on farms.