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141.
Joaquim Silvestre 《Economic Theory》2002,20(2):413-425
Summary. Starr (1973) showed that, if people have different subjective probabilities, ex ante and ex post efficiency conflict. Conversely, under the simple preferences that he considered, the discrepancy between ex ante and ex post efficiency disappears when subjective probabilities are identical. Here I consider identical subjective probabilities, but
more general preferences. First, risk attraction is admitted. Second, I dispense with the double requirement (dubbed IZU)
of additive separability and state-independence of the utility of zero-date consumption, an unrealistic requirement when modeling
the investment in durable goods. I find that, under IZU, and as long as ex post preferences satisfy the natural assumption of quasiconcavity (and satisfy some technical qualifications), an ex ante efficient allocation is indeed ex post efficient, but the converse is not necessarily true under risk attraction. If, on the other hand, IZU is violated, then one
can have ex ante efficient allocations that are not ex post efficient, and vice-versa, even under risk aversion.
Received: June 25, 1999; revised version: March 2001 相似文献
142.
Despite the abundant research on material flows and the growing recognition of the need to dematerialize the economy, business enterprises are still not making the best possible use of the many opportunities for material efficiency improvements. This article proposes one possible solution: material efficiency services provided by outside suppliers. It also introduces a conceptual framework for the analysis of different business models for eco-efficient services and applies the framework to material efficiency services. Four business models are outlined and their feasibility is studied from an empirical vantage point. In contrast to much of the previous research, special emphasis is laid on the financial aspects. It appears that the most promising business models are ‘material efficiency as additional service’ and ‘material flow management service’. Depending on the business model, prominent material efficiency service providers differ from large companies that offer multiple products and/or services to smaller, specialized providers. Potential clients (users) typically lack the resources (expertise, management's time or initial funds) to conduct material efficiency improvements themselves. Customers are more likely to use material efficiency services that relate to support materials or side-streams rather than those that are at the core of production. Potential client organizations with a strategy of outsourcing support activities and with experience of outsourcing are more keen to use material efficiency services. 相似文献
143.
我国民间审计发展的制约因素刍议 总被引:1,自引:0,他引:1
建立和维护社会经济秩序是民间审计的基本职能,我国的民间审计自20世纪80年代恢复以来,经过20年的发展已经初具规模.但与发达国家相比,仍处于初始阶段.为推动民间审计事业的快速健康发展,从我国民间审计的发展现状出发,分析我国民间审计发展的制约因素. 相似文献
144.
Recently, applications of cooperative game theory to economic allocation problems have gained popularity. We investigate a
class of cooperative games that generalizes some economic applications with a similar structure. These are the so-called line-graph
games being cooperative TU-games in which the players are linearly ordered. Examples of situations that can be modeled like
this are sequencing situations and water distribution problems. We define four properties with respect to deleting edges that
each selects a unique component efficient solution on the class of line-graph games. We interpret these solutions and properties
in terms of dividend distributions, and apply them to economic situations.
This research has been done while the third author was visiting Tinbergen Institute at the Free University, Amsterdam. The
research is part of the Research Programme “Strategic and Cooperative Decision Making” at the Department of Econometrics.
Financial support from the Netherlands Organization for Scientific Research (NWO) in the framework of the Russian-Dutch programme
for scientific cooperation, is gratefully acknowledged. The third author also appreciates partial financial support from the
Russian Leading Scientific Schools Fund (grant 80.2003.6) and Russian Humanitarian Scientific Fund (grant 02-02-00189a). We
thank three anonymous referees for their valuable comments. 相似文献
145.
We consider the problem of allocating a set of indivisible objects to agents in a fair and efficient manner. In a recent paper, Bogomolnaia and Moulin consider the case in which all agents have strict preferences, and propose the probabilistic serial (PS) mechanism; they define a new notion of efficiency, called ordinal efficiency, and prove that the probabilistic serial mechanism finds an envy-free ordinally efficient assignment. However, the restrictive assumption of strict preferences is critical to their algorithm. Our main contribution is an analogous algorithm for the full preference domain in which agents are allowed to be indifferent between objects. Our algorithm is based on a reinterpretation of the PS mechanism as an iterative algorithm to compute a “flow” in an associated network. In addition we show that on the full preference domain it is impossible for even a weak strategyproof mechanism to find a random assignment that is both ordinally efficient and envy-free. 相似文献
146.
Policies such as the SEC’s Fair Disclosure Rule, and technologies such as SEC EDGAR, aim to disseminate corporate disclosures
to a wider audience of investors in risky assets. In this study, we adopt an experimental approach to measure whether this
wider disclosure is beneficial to these investors. Price-clearing equilibrium models based on utility maximization and non-revealing
and fully-revealing prices predict that in a pure exchange economy, an arbitrary trader would prefer that no investors are
informed rather than all are informed; non-revealing theory further predicts that an arbitrary trader would prefer a situation
in which all traders are informed rather than half the traders are informed. These predictions can be summarized as “None
> All > Half”. A laboratory study was conducted to test these predictions. Where previous studies have largely focused on
information dissemination and its effects on equilibrium price and insider profits, we focus instead on traders’ expected
utility, as measured by their preferences for markets in which none, half, or all traders are informed. Our experimental result
contradicts the prediction and indicates “Half > None > All”, i.e. subjects favor a situation where a random half is informed.
The implication is that in addition to testing predictions of price equilibrium, experiments should also be used to verify
analytical welfare predictions of expected utility under different policy choices.
JEL Classification D82, D53, G14, L86
This work was largely completed while this author was at The Hong Kong University of Science and Technology. 相似文献
147.
It is recommended for economists to examine China’s Urban-Rural disparity from the perspective of transaction efficiency,
in that it can provide us with a systematic explanation to both the cases of different countries and development stages. China’s
Urban-Rural disparity is special and virtually a demonstration of its special transaction efficiency structure. Exploration
of China’s Urban-Rural disparity from such perspective indicates that, different from those in countries with a market economy,
China’s case involves many exogenous and contrived factors. Therefore, the solutions are to improve the whole transaction
efficiency in the economy, which includes eliminating its regionally unfavorable policies and institutions, and enforcing
more favorable and regionally balanced institutional reforms.
__________
Translated from Fudan Journal (复旦学报, Social Science Edition), 2006, (1) (in Chinese) 相似文献
148.
149.
This paper examines the short and long-term price linkages among major art and equity markets over the period 1976–2001. The art markets examined are Contemporary Masters, French Impressionists, Modern European, 19th Century European, Old Masters, Surrealists, 20th Century English and Modern US paintings. A global equity index (with dividends and capitalisation changes) is also included. Multivariate cointegration procedures, Granger non-causality tests, level VAR and generalised variance decomposition analyses based on error-correction and vector autoregressive models are conducted to analyse short and long-run relationships among these markets. The results indicate that there is a stationary long-run relationship and significant short and long run causal linkages between the various painting markets and between the equity market and painting markets. However, in terms of the percentage of variance explained most painting markets are relatively isolated, and other painting markets are generally more important than the equity market in explaining the variance that is not caused by innovations in the market itself. This suggests that opportunities for portfolio diversification in art works alone and in conjunction with equity markets exist, though in common with the literature in this area the study finds that the returns on paintings are much lower and the risks much higher than in conventional financial markets.The authors would like to thank delegates to the 14th Australasian Finance and Banking Conference, University of New South Wales, seminar participants at the Queensland University of Technology and Massey University, Masaki Katsuura, and two anonymous referees for helpful comments on earlier versions of this paper. The financial assistance of a Queensland University of Technology, Faculty of Business Research Initiative Grant is also gratefully acknowledged. 相似文献
150.
By using Data Envelopment Analysis approach, we treat the health production system in a certain province as a Decision Making
Unit (DMU), identify its inputs and outputs, evaluate its technical efficiency in 1982, 1990 and 2000 respectively, and further
analyze the relationship between efficiency scores and social-environmental variables. This paper has found several interesting
findings. Firstly, provinces on frontier in different year are different, but provinces far from the frontier keep unchanged.
The average efficiency of health production has made a significant progress from 1982 to 2000. Secondly, all provinces in
China can be divided into six categories in terms of health production outcome and efficiency, and each category has specific
approach of improving health production efficiency. Thirdly, significant differences in health production efficiencies have
been found among the eastern, middle and western regions in China, and among the eastern and middle regions. At last, there
is significant positive relationship between population density and health production efficiency but negative relationship
(not very significant) between the proportions of public health expenditure in total expense and efficiency. Maybe it is the
result of inappropriate tendency of public expenditure. The relationship between abilities to pay for health care services
and efficiency in urban areas is opposite to that in rural areas. One possible reason is the totally different income and
public services treatments between rural and urban residents. Therefore, it is necessary to adjust health policies and service
provisions which are specifically designed to different population groups.
__________
Translated from Jingji Yanjiu 经济研究 (Economic Research Journal), 2006, (7): 92–105 相似文献