Multiproduct Outputs and Scale Economies in Electric Power Production: Some New Estimates

The present study offers an argument, through a technical exposition, which suggests that there are cost differences inherent in serving different types of buyers in the electric utilities industry. To this end, we employ a translog joint cost function (for electricity production) with three outputs, which allows for the examination of the cost differences between wholesale and retail trade for vertically integrated, investor-owned companies in the industry. The regression estimates suggest different costs at the means, however the estimated marginal cost curve for wholesale power is not as robust as those for low-voltage and industrial power.     

Productivity and Wage Effects of Firm-Level Collective Agreements: Evidence from Belgian Linked Panel Data

How do firm-level collective agreements affect firm performance in a multi-level bargaining system? Using detailed Belgian-linked employer–employee panel data, our findings show that firm-level agreements increase both wage costs and labour productivity (with respect to sector-level agreements). Relying on approaches developed by Bartolucci and Hellerstein et al., they also indicate that firm-level agreements exert a stronger impact on wages than on productivity, so that profitability is hampered. However, this rent-sharing effect mostly holds in sectors where firms are more concentrated or less exposed to international competition. Firm agreements are thus mainly found to raise wages beyond labour productivity when the rents to be shared between workers and firms are relatively big. Overall, this suggests that firm-level agreements benefit both employers and employees — through higher productivity and wages — without being very detrimental to firms’ performance.     

Technological Opportunity and Economies of Scale in Research Productivity: A Study on Three Global Industries

In this study, the author tests for economies of scale with the use of patent citationsand assesses the impacts of technological opportunity on research productivity inthree global industries, namely, computer, chemical, and electrical and electronic.Technological opportunity in an industry is jointly represented by knowledgespillovers, inter-firm research overlap and scope of research. In particular, the effect of knowledge spillovers is decomposed into internal, intra-industry and inter-industry spillovers. The results suggest no evidence for economies of scale, but the impacts of various aspects of technological opportunity on research productivity are significantly positive. Moreover, the data indicate that if the number of firms in each overlapping research area is small, a rise in the number of these areas enhances research productivity.     

The Dynamic Effects of Works Councils on Labour Productivity: First Evidence from Panel Data

We estimate dynamic effects of works councils on labour productivity using newly available information from West German establishment panel data. Conditioning on plant fixed effects and control variables, we find negative productivity effects during the first five years after council introduction but a steady and substantial increase in the councils’ productivity effect thereafter. Our findings support a causal interpretation for the positive correlation between council existence and plant productivity that has been frequently reported in previous studies.     

企业规模、规模经济与产业集群

企业规模问题一直存在着截然相反的观点和主张,造成冲突的原因在于“企业规模”是一个各取所需的含混的概念。具有经济学意义的企业规模应该从两个相互正交的维度上———企业的横向规模和纵向规模———来度量。规模经济来自于横向规模的扩张,而纵向规模的扩张可能会带来规模不经济。产业集群是观察企业横向、纵向规模一个好的样本。区分企业规模的不同性质,将会使与规模经济相关的理论研究出现明晰的路径。     

Economies of Scale and Scope in Australian Telecommunications

This paper employs a composite cost function toexamine the cost structure of Australian telephoneservices. The composite cost model combines thelog-quadratic input price structure of the translogmodel with a quadratic structure for multiple outputs. Quadratic output structures permit the measurement ofeconomies of scale, economies of scope, andsubadditivity without prejudging their presence. Model estimates, on Telstra system data from 1926 to1991, show that the production of Australian telephoneservices exhibits economies of scope but no rayeconomies of scale.     

Learning by Doing and Spillovers: Evidence from Firm-Level Panel Data

In this paper we extend the Bahk and Gort (1993) (Journal of Political Economy, 101, 561–583) approach of testing for the impact of learning by doing (LBD) on firm productivity using data on a panel of Spanish manufacturing firms. Specifically, we show that support for firm specific LBD and spillovers from sector-wide LBD seems to hinge crucially on the econometric methodology, and hence the underlying assumptions, employed. Once potential biases due to unobserved time invariant firm specific effects and endogeneity are taken account of, there is only support for spillovers from sector-wide LBD. Moreover, results depend on the definition of LBD employed.     

Determinants of the Wage Share: A Panel Analysis of Advanced and Developing Economies

Wage shares have declined substantially in all OECD countries and most developing economies since 1980. This study uses a new ILO/IILS dataset on adjusted wage shares for a panel of up to 43 developing and 28 advanced economies (1970–2007) to explain changes in wage shares and assess the relative contributions of technological change, financialization, globalization and welfare state retrenchment. We find strong negative effects of financialization as well as negative effects of welfare state retrenchment. Globalization has (in production) robust negative effects in advanced as well as in developing economies, which is at odds with the Stolper–Samuelson theorem. We find small, and for developing countries positive effects of technological change. Our results support a Political Economy approach to explaining income distribution.     

西北地区电力外送规模与目标市场优化研究

西北地区能源资源优势突出,经济发展相对落后,通过电力外送,将资源优势转化为经济优势,有助于我国区域经济协调发展,符合国家能源资源优化配置和“资源节约型、环境友好型”社会建设的要求。在分析西北地区的电力外送能力、中东部受端地区的受电市场空间的基础上,对西北电力外送的规模、目标市场及效益进行了分析,提出了相关建议。     

The Nature and the Determinants of Labor Market Transitions in Former Socialist Economies: Evidence from Bulgaria

To generate stylized facts on transitions between different labor market states during early transition, panel data for a sample of the registered unemployed in Bulgaria were collected. We find that about 60 percent of the unemployed are long-term unemployed. From logit regressions we find that women who had higher education and had not received unemployment benefits are more likely to be reemployed. For men, these factors are not significant, although participation in a training program is significant.     

Market Diversion and Market Power: California Eggs

Allegations of price-fixing by US egg producers maintain that the industry’s strategic use of export programs softens competition in the domestic market. This study provides an empirical investigation into these allegations using retail market data from a specific California retail market. Our findings suggest that the antitrust complaints have economic merit, but the deviations from competitive behavior are small.     

中国银行业规模经济效益与相关产业组织政策

大银行具有规模优势,但银行规模并不是越大越好,最佳规模是位于一定区域之内的。同时,银行业的规模经济要受到市场结构、银行制度、管理体制以及金融创新等因素的影响。本文运用指标分析、“生存竞争法”分析,以及Translog成本函数对中国银行业进行了实证考察。结果表明,规模经济在中国银行业中的确存在,但“最大”并不是“最好”,四大国有商业银行呈现一种规模不经济的状态,本文对其原因进行了剖析,并提出相应的政策建议。     

Unions and the Employment Growth: Panel Data Evidence

This study adds to the small empirical literature on the impact unions have on employment growth using data from Australia. Unlike previous studies, the data used are from a panel of firms surveyed at two points in time rather than a single cross section. The results indicate a negative union effect on employment in private-sector firms of about 2.5 percent per annum that, despite the very different institutional framework that prevails in Australia, is consistent with results obtained with North American data.     

市场扭曲、跨企业的资源配置与制造业部门的生产率

近年来,在中国制造业部门的各个产业里,不同企业之间的生产率表现出很大的差异,而且,企业的规模分布与生产率分布只有微弱的关联。在这篇文章里,我们讨论了市场扭曲与产业内不同企业之间生产率差异的内在联系。我们的研究结果显示,在几个代表性产业里,市场不完全引起的产业内跨企业的资源配置扭曲解释了企业间基本生产要素的生产率差异和全要素生产率差异的实质性部分,并导致了总量层面40%以上的全要素生产率损失。进一步,我们还发现,地区市场分割和金融市场的不完全是造成产品和要素市场扭曲的重要原因,而企业所有制和政府补贴对跨企业的资源配置没有显著的影响。     

Market Power in Chinese Taipei: Laws, Policies and Treatments

The experience of Chinese Taipei shows that opening up a previously protected market to new entrants can be a more effective and reliable way to enhance competition than regulating the behavior of dominant or monopolistic firms. Moreover, when opening up the market, the liberalizing measures adopted by government should be market-structure-neutral. That is, it should not try to dictate the direction and results of market competition. A more pressure-resistant mechanism should be designed to deal with market power, taking the form of a regime that is cross-sector, independent and collective in its decision-making, such as has been the case with Chinese Taipei's Fair Trade Commission.     

The Structure of the Wage Gap for Temporary Workers: Evidence from Australian Panel Data

This study uses panel data for Australia to estimate the wage differential between workers in temporary jobs and workers in permanent jobs. It is the first study to use unconditional quantile regression methods in combination with fixed effects to examine how this gap varies over the entire wage distribution. While the wages of fixed‐term contract workers are found to be similar to those of permanent workers, low‐paid casual workers experience a wage penalty and high‐paid casual workers a wage premium compared to their permanent counterparts. Temporary agency workers also usually receive a wage premium, which is particularly large for the most well paid.     

中国商业银行规模经济与范围经济的实证分析

本文通过对中国商业银行1996年到2001年的经营情况进行实证分析，估算出各家银行的规模经济系数和范围经济系数，发现大部分商业银行规模不经济而范围经济，规模不经济的程度与银行资产规模呈正相关关系，股份制商业银行的范围经济系数高于国有商业银行的范围经济系数，范围经济与银行资产规模没有必然的联系。在此基础上，本文提出了相应的政策主张。