Tariffication of a Distorted Economy: A CGE Analysis

This paper examines the consequences of the tariffication of a quota when there are several potential distortions present in a country, including domestic monopoly and wage rigidities. It is generally presumed that tariffs are superior to quotas because of their transparency and revenue-raising attributes. However, in the presence of multiple distortions, liberalization of a single policy instrument may result in net welfare losses. The findings suggest that, in a general equilibrium context, such a liberalization policy will have ambiguous effects upon aggregate domestic welfare in the country undertaking the tariffication.     

THE SCOPE FOR COLLUSION AND COMPETITION IN A REGULATED VERTICALLY INTEGRATED INDUSTRY*

This paper investigates the competitive implications of input price controls in a partially regulated industry where a vertically integrated firm has exclusive control over an input with natural monopoly characteristics. Such industry structures are commonly encountered in activities such as telecommunications, railways, electricity and water supply. It is shown that in a Cournot game such input price controls are unambiguously benefical to consumers. However, it is further demonstrated that there exist circumstances in which these controls may make the non-integrated firm worse off. Thus if the objective of input price regulation is to protect the non-integrated firm, such controls may prove to be counterproductive.     

Market concentration measurement,administrative monopoly effect and efficiency improvement: empirical data from China civil aviation industry 2001-2015

China’s civil aviation transportation industry is a natural monopoly industry field, and the effect of administrative monopoly is obviously. This paper uses absolute market concentration (CRn) and relative market concentration (HHI) to quantitatively analyze the competition and monopoly degree of Chinese civil aviation transportation in 2001–2015. It is found that although the monopoly degree of Chinese civil aviation industry has declined in the time period, it still belongs to the oligopoly monopoly market. Then, this paper calculates the production efficiency of the industry by DEA method, and makes an empirical test on the relationship between the two factors using the econometric models. With taking into account the calculated results and the HHI index. Relevant research results show that the equilibrium between the existing production efficiency and the degree of administrative monopoly in China’s civil aviation transportation industry long-term stably from the time period. In order to realize the rapid development and improve the efficiency of the industry, the Chinese civil aviation transportation industry must carry out the market-oriented reform. By realizing the separation of government and enterprises, it is necessary to promote the good competition rules in order to benefit the consumers.     

The quiet life of a monopolist: The efficiency losses of monopoly reconsidered

We study the efficiency losses of monopoly in a model where the firm’s total cost of production decreases with the manager’s effort to control cost. In contrast to the existing analyses of oligopolistic and monopolistically competitive markets that find an ambiguous relationship between competition intensity and managerial slack, we demonstrate that, under the same kind of cost condition, monopoly unambiguously reduces effort level and, in the case where ownership and control are separate, magnifies the effects of the moral hazard problem. Furthermore, under an alternative cost condition monopoly raises effort level rather than reducing it. In such a situation the separation of ownership and control may mitigate the productive inefficiency of monopoly.     

日本行政垄断规制改革及启示

日本是"政府主导性"市场经济国家,其政府对行政垄断行业的规制事无巨细.但在20世纪80年代后,日本为适应国内变化了的经济形势,对其规制进行了以"原则上实行经济自由化"为目标的规制改革,其改革采取了渐进式改革方式.日本对规制的改革对我国的国有企业改革和非国营经济进入行政垄断行业以及促进经济竞争、提高行政垄断行业的效率具有启示意义.     

A welfare analysis of tariffs and equivalent quotas under demand uncertainty: Implications for tariffication

Under market demand uncertainty, we show that quotas can result in a welfare advantage over tariffs for an importing country despite that its government does not capture any quota rents. Specifically, the conditions under which an equivalent quota yields higher expected welfare than a tariff are shown to depend on a set of economic variables. These variables include the initial tariff rate, the relative efficiency in production between home and foreign firms, the probability distribution of random demand shocks that make the quota binding or non-binding under uncertainty, as well as the variance of the stochastic market demand. The analysis of this paper has welfare implications for tariffication.     

世界电力产业的发展趋势对我国的启示--研究电力产业自然垄断、竞争和管制的重要意义

近年来,以打破垄断、促进竞争、提高效益、降低电价、改进服务为基本取向的电力产业改革,已成为国际电力产业的发展趋势。本文总结了以竞争为出发点的各国电力产业改革的共同点,并且针对我国电力产业的特殊性,提出研究电力产业改革的战略思路,并分析了电力产业自然垄断、竞争和管制的关系,是非常必要的。     

效率工资、租金分享与企业工资收入差距——基于第一次全国经济普查工业企业数据的实证研究

企业利润对工资差距的影响究竟来自效率工资还是来自租金分享,这是理论界和政策制定者共同关心的问题。文章利用2004年第一次全国经济普查数据实证分析发现:(1)企业利润是解释我国企业工资差距的重要因素,这主要由效率工资导致。(2)国有企业存在租金共享,但它不是通过企业利润实现的,而是利用行业垄断地位直接将职工高工资转化为企业成本实现的。(3)集体企业存在着租金共享。(4)外资企业也存在租金共享,但存在租金共享的外资企业同时具有更高的效率。(5)私营企业存在效率工资。与其他所有制企业不同的是,对私营企业而言,行业垄断不但不能提高反而会降低职工工资水平,或反过来说,产品市场竞争有利于提高职工工资水平。最后,文章针对性地给出了一些缩小企业工资差距的政策建议。     

Effects of Transport Regulation on the Oil Market: Does Market Power Matter?

Instruments used to regulate the consumption of oil in the transport sector include fuel taxes, biofuel requirements, and fuel‐efficiency standards. However, the effects that these have on oil consumption and price vary. If market power is present in the oil market, the directions of change in consumption and price might contrast with those in a competitive market. As a result, the market structure affects not only the effectiveness of the policy instruments used to reduce oil consumption, but also the terms of trade and carbon leakage. In particular, reduced oil consumption, as a result of increased fuel‐efficiency standards, will unambiguously increase the price of oil under a monopoly.     

Macroeconomic implications of a sharing compensation scheme in a model of endogenous growth

This paper develops an endogenous growth model that sheds light on the roles of the revenue-sharing scheme in a macro-economy. We show that a higher sharing ratio attributable to labor unambiguously promotes the equilibrium working time, but has an ambiguous effect on the balanced-growth rate. Of interest, if the economy is characterized by a higher degree of monopoly, a sharing compensation system is more likely to boost the balanced growth rate. In a normative analysis, we show that to remedy the distortions caused by the sharing scheme and market imperfections, the government should provide a subsidy to capital incomes, while it may either tax or subsidize labor incomes.     

Quantitative Trade Restrictions in Unionized Economies

This paper models the interactions of a labor union and a monopoly firm under an import quota in a small open economy. The distorted equilibrium is depicted in a diagram, in which wages and employment in both sectors, and the monopoly rent, can be identified. The imposition of an import quota in the unionized sector reduces monopoly rent, union employment, and wages in both sectors, compared with the case of autarky. In addition, the paper presents several surprising comparative statics results. For instance, an increase in the world price causes the protected (i.e., "wrong") sector to shrink, wages to decrease, and national income to rise if the initial world price is low.     

BERTRAND COMPETITION CAN YIELD HIGHER PRICES THAN MONOPOLY

If we take into account the spatial dimension of markets, prices of incumbent firms may be higher and consumer surplus may be lower with competition than with monopoly. This result obtains unambiguously, even in the supposedly highly competitive case of Bertrand competition. Moreover, we are able to show that consumers of the commodity may be worse off with duopoly, if the distance between the firms' sites is sufficiently large.     

CONCENTRATION-PROFITS MONOPOLY VS. EFFICIENCY DEBATE: SOUTH AFRICAN EVIDENCE

Using the new official measures of concentration, this study finds a strong and highly significant correlation between concentration and industry profitability for South African manufacturing industries. This correlation is consistent with both the monopoly hypothesis of the traditional structure-conduct-performance paradigm and Demsetz's efficiency hypothesis that concentration of industry reflects the dominance of superior low-cost firms. Using the four-firm concentration ratio, this study applies Chappell and Cottle's extension of the Demsetz test to distinguish between the monopoly explanation of this correlation and the efficiency explanation. Using a conventional regression specification of the concentration-profits relationship with no control for efficiency, this study finds a statistically significant coefficient only for the industry and large size class regressions. Because small firms should do at least as well as large firms, under the price umbrella provided by large firms, this result is inconsistent with the monopoly hypothesis but consistent with the efficiency hypothesis. Specifying a variable that measures the efficiency of large plants relative to smaller plants—the cost advantage ratio—yields striking results. Similar to the results obtained by Chappell and Cottle for the United States, this study finds the efficiency variable to be highly significant in the industry and large size class regressions, while concentration becomes insignificant. Moreover, the efficiency variable is insignificant in the smaller size classes Both the statistical insignificance of concentration and the pattern of the efficiency variable coefficients suggest that including concentration in the regression specification without the efficiency variable simply highlights the effect of the efficiency variable. Coming as they do from an environment as different from the United States as the South Africa of the 1980s, these results strongly support the Demsetz efficiency hypothesis.     

Foreign aid and weakest-link international public goods: An experimental study

In this paper, we investigate efficiency differences between income and in-kind transfers as distribution mechanisms of foreign aid to weakest-link international public goods in a laboratory environment. We find that if there is relatively small difference in country size, then income transfers seem to provide a higher provision of the international public good, and thus higher overall welfare level than that of in-kind transfers. However, if there is a large disparity in country size, then in-kind transfers appear to provide a higher level of IPG provision and higher accompanying global welfare.     

我国自然垄断行业的价格研究

自然垄断行业是一个特殊的行业,我国自然垄断行业的产品和服务价格明显偏高,效率低下,政府必须对其价格进行规制。然而,常用的价格规制方法也有一定的局限性。自然垄断行业的价格管理改革,需要通过市场机制、竞争机制以及政府有效的规制共同对其价格发挥作用。     

When imperfect collusion is profitable

This paper studies cartel stability under the assumption that member firms can choose intermediate degrees of collusion as well as the joint-profit-maximizing solution in determining the quota to be produced by each firm. After showing that firms can increase the number of participants by decreasing the degree of collusion, I prove that individual members' profits are maximized when firms choose a (possibly low) degree of collusion such that all firms in the industry want to take part in the cartel. More precisely, if the number of firms in the industry is four or less, then all of them want to take part in the cartel even if the maximum degree of collusion is chosen (i.e., the monopoly output is produced); if the number of firms is greater than four, firms will still create an industry-wide cartel but they will produce a higher quantity than the monopoly output.     

International trade and consumption network externalities

This paper studies the effects of trade liberalization in the presence of consumption network externalities. The framework is applicable to the choice of network products and sheds light on the debate on globalization and culture. In an extended Ricardian model of international trade the paper shows that: (i) trade is not Pareto inferior to autarky if the free trade equilibrium is unique; (ii) trade is not Pareto superior to autarky if both countries are diverse (network competition) under free trade, but can be if each country is homogenous (network monopoly); (iii) and when multiple free trade equilibria exist everybody in a country can lose from free trade if that country is homogenous under autarky. Consumers of imported network goods tend to gain, while consumers of exported network goods tend to lose from trade liberalization.     

The Loss from Trade under International Cournot Oligopoly with Cost Asymmetry

This paper examines the efficiency and welfare effects of intra‐industry trade in the presence of imperfect competition and heterogeneous technologies. We show that when a Southern country has a relatively less concentrated industry and faces low demand, the output of the Northern country may contract after initiating trade. Production inefficiencies can outweigh the gain effected by trade‐induced competition and lower price in trade, resulting in a net loss in the global welfare. In some circumstances, voluntary technology transfer, managed trade through VERs, or the introduction of a tariff can improve both trading partners' welfare.     

混业经营与金融体系稳定性:基于银行危机的全球实证分析

银行混业经营不仅关系到自身效率的提高,更关系到银行体系乃至整个金融体系的稳定性。对全球范围内61个国家的跨国数据进行的实证分析表明,一个国家对银行混业经营的限制越少,该国的金融体系越趋于稳定,发生银行危机的概率也越小。不仅如此,在宏观经济越不稳定的国家,其一般性银行危机演变为系统性银行危机的概率也越大。     

劳动力市场行政垄断行业分割与劳动收入比重——基于中国省级面板数据的分析

通过对我国劳动收入比重变动的原因研究发现:劳动力市场行政垄断行业分割与劳动收入比重之间互为因果。我国劳动力市场行政垄断行业分割会使行政垄断行业就业人数占总就业人数比例下降,行政垄断行业和竞争行业间收入差距扩大,导致劳动收入比重下降,进而会使资本实际价格下降,增强行政垄断企业的市场力量,加剧劳动力市场行政垄断行业分割程度。因此,减弱劳动力市场行政垄断行业分割是稳定劳动收入比重的关键。