A multi-division efficiency evaluation of U.S. electric power companies using a weighted slacks-based measure

Prior to the 1990s, the electric power industry was highly regulated across the world. Under a liberalization policy to open markets and to grow competition commenced in the early 1990s, efficient management has become a necessity for companies in this industry. The current study examines the divisional efficiencies of multi-functional, vertically integrated companies seeking to optimize their overall management efficiency. For this purpose, divisional cost data are used as input into a slacks-based measure (SBM) model. This provides divisional efficiency indices based on slacks, as well as one for the larger firm-level management function. Further, given the important role of cost structure, we introduce a modified SBM, named the weighted SBM (WSBM), which directly incorporates division-specific weights into the objective function. Results reveal that the power generation divisions of the companies studied have significant influence on the overall cost, whereas the impact of the other four divisions - transmission, distribution, sales and general administrative - is limited.     

Inset appointments: meeting supply through trading water rights

There are conflicting views as to the efficiency and effectiveness of the water industry in England and Wales. Projections put forward by both water companies and OFWAT will, if unchallenged, lead to a significant escalation in the costs of this essential service as the industry invests heavily to meet a seemingly inexorable demand for more water and higher environmental standards. Real market competition (as opposed to comparative competition) is starting to introduce innovation and is challenging assumptions about economies of scale. The impact of competition on the future of Britain's water industry could be profound.     

Efficiency, productivity, and scale economies in the U.S. property-liability insurance industry

The paper examines efficiency, productivity and scale economies in the U.S. property-liability insurance industry. Productivity change is analyzed using Malmquist indices, and efficiency is estimated using data envelopment analysis. The results indicate that the majority of firms below median size in the industry are operating with increasing returns to scale, and the majority of firms above median size are operating with decreasing returns to scale. However, a significant number of firms in each size decile have achieved constant returns to scale. Over the sample period, the industry experienced significant gains in total factor productivity, and there is an upward trend in scale and allocative efficiency. More diversified firms and insurance groups were more likely to achieve efficiency and productivity gains. Higher technology investment is positively related to efficiency and productivity improvements.     

Optimal Timing of Foreign Direct Investment Under Uncertainty

Foreign-trade zone (FTZ) use by international marketers vrovides them with the mlential to gain cost savings and increak operating efficiencies. However, no empirical research has yet been conducted to examine whether operating cost efficiency is better for international marketers using FTZs (FTZ firms) than those not using FTZs (non-FTZ firms). The operating cost efficiency of FTZ and non-FIZ firms is examined through a comparison of their cost structures. Using translog production functions, the surprising results in this paper suggest that FTZ firms tend to be less efficient than non-FTZ firms. Some possible explanations for this result are advanced, and public policy implications are discussed.     

Wal-Mart and the geography of grocery retailing

This paper empirically examines the impact of entry by Wal-Mart on competition in the supermarket industry. Using a detailed panel dataset spanning 1994–2006, we estimate the impact of Wal-Mart on firm outcomes and market structure, controlling for persistent local trends and systematic differences across markets by exploiting the detailed spatial structure of our store-level census. We find that Wal-Mart’s impact is highly localized, affecting firms only within a tight, two-mile radius of its location. Within this radius, the bulk of the impact falls on declining firms and mostly on the intensive margin. Entry of new firms is essentially unaffected. Moreover, the stores most damaged by Wal-Mart’s entry are the outlets of larger chains. This suggests that Wal-Mart’s expansion into groceries is quite distinct from its earlier experience in the discount industry, where the primary casualties were small chains and sole proprietorships that were forced to exit the market. This contrast sheds light on the role density economies play in shaping both equilibrium market structure and economic geography. In the case of grocery competition, high travel costs and the perishable nature of groceries appear to impart horizontal differentiation between firms. This differentiation in demand appears to reduce impact of scale economies advantages that Wal-Mart exploited to the detriment of far-flung competitors in the discount store industry.     

Estimation of market power in the presence of firm level inefficiencies

“The quiet life hypothesis” (QLH) by Hicks (1935) argues that, due to management’s subjective cost of reaching optimal profits, firms use their market power to allow inefficient allocation of resources. Increasing competitive pressure is therefore likely to force management to work harder to reach optimal profits. Another hypothesis, which also relates market power to efficiency is “the efficient structure hypothesis” (ESH) by Demsetz (1973). ESH argues that firms with superior efficiencies or technologies have lower costs and therefore higher profits. These firms are assumed to gain larger market shares which lead to higher concentration. Ignoring the efficiency levels of the firms in a market power model might cause both estimation and interpretation problems. Unfortunately, the literature on market power measurement largely ignores this relationship. In the context of a dynamic setting, we estimate the market power of US airlines in two city-pairs by both allowing inefficiencies of the firms and not allowing inefficiencies of the firms. Using industry level cost data, we estimate the cost function parameters and time-varying efficiencies. An instrumental variables version of the square root Kalman filter is used to estimate time-varying conduct parameters.     

Competition for Managers and Product Market Efficiency

We investigate whether competition between two firms to hire managers with different abilities might affect efficiency in the product market, when a manager's effort is his/her private information. We conclude that competition for managers might lead to an improvement in efficiency in the market of the firm that attracts the most efficient manager. Competition for managers might even eliminate the productive efficiency loss due to the asymmetry of information in the firm-manager relationship.     

Labour scarcity and the survival of small firms: a resource‐based view of the road haulage industry

This article is concerned with the problem of labour scarcity in the road haulage industry and how it affects small firms. The recruitment and retention of lorry drivers is critically important for the industry because driving is no longer seen as an attractive occupation, and there are worries that there is an insufficient supply of new recruits to replace the experienced drivers who are leaving the industry. In order to investigate this issue, we make use of a modified version of the resource‐based view (RBV) of the firm, focusing on the notion that a minimum set of ‘table stakes’(HR practices) is necessary for the continued survival of small firms. Drawing on longitudinal data from seven small road haulage companies, we argue that owner‐managers have developed an astute combination of path‐dependent and socially complex networking abilities, embedded within an extensive understanding of both product and local labour markets. We conclude that the RBV needs extending to make greater allowance for different ownership goals and diversity in markets, and to consider the forces that promote similarity rather than difference among firms within an industry.     

EVA在我国保险公司绩效评价中应用的思考

我国保险市场竞争日趋激烈,各家保险公司在保费规模增长的同时,更加注重业务结构的调整和经营效益的提升。但保险公司在绩效考评等内部管理环节上存在的一些问题影响了保险公司经营绩效的真实反映,制约了保险行业的进一步发展。在保险公司实施基于EVA的绩效评价体系,有利于提高保险公司价值管理水平,增强其核心竞争能力。     

DEA evaluations of long- and short-run efficiencies of digital vs. physical product “dot com” companies

This paper applies Data Envelopment Analysis to determine relative efficiencies between internet dot com companies that produce only physical products and those that produce only digital products. To allow for the fact that the latter are relatively inexperienced, a distinction is made between long- and short-run efficiencies and inefficiencies, with a finding of no statistically significant difference in the short run but digital product companies are significantly more efficient in the long run. A new way of distinguishing between long- and short-run performances is utilized that avoids the need for identifying the time periods associated with long-run vs. short-run efficiencies and inefficiencies. In place of “time,” this paper utilizes differences in the “properties” that economic theory associates with long- and short-run performances.     

The post-1990 rebirth of the US machine tool industry: a temporary recovery?

After several decades of decline, the US machine tool (MT) industry entered a modest period of recovery in the mid-1990s. With the slowdown of the global economy in the early 2000s, however, this recovery has stalled. By now, there are clear signs that rates of firm exit are increasing. This paper compares the results of a survey of MT producers (conducted in 2000) with more recent industry data (2004). Four years after the optimistic findings of the 2000 survey were reported, we find that many of the small-to-medium sized producers have either ceased operations or have downscaled substantially. While virtually every US manufacturer of MT products has been negatively affected by the global economic downswing, adverse business conditions have had a disproportionately severe impact upon firms that cater primarily to local markets. MT manufacturers located within the nation's traditional industrial heartland have been the hardest hit, notably as a result of rising import competition. In contrast to locally-oriented producers, our findings suggest that a small number of innovative MT companies have been faring quite well as a result of continued export development. The paper concludes with a brief discussion of several futures for the domestic MT sector.     

Efficiency and productivity in the Thai non-life insurance industry

This paper estimates a stochastic cost frontier for a sample of the non-life insurance industry in Thailand from 2000 to 2007. Our model explicitly considers the heteroscedasticity in the variances of the noise and inefficiency components that could affect the position of the cost frontier as well as the measurement of efficiency. Tests for double heteroscedasticity and appropriate specification for the cost frontier are performed. The chosen model is used to examine whether economies of scale and a change in technology exist. In addition, this paper calculates total factor productivity (TFP) change and decomposes it into scale effect, cost efficiency effect, technology effect, output effect, price effect, and environmental effect. Our results reveal that, on average, Thai non-life insurance firms are between 74 and 79 % efficient, that economies of scale exist, and that regress in technology shifts the cost frontier upward by 2.2 %. The regress in technology is the dominant contributor to a negative TFP growth of 1.15 %. The restructuring of the industry following the 1997 Asian financial crisis finally paid off when the industry experienced technology progress in 2005 and beyond. Between 2005 and 2007, technology progress and productivity growth occurred at a little over 2 % a year. In-depth analysis of the most and the least efficient firms reveals that most efficient firms tend to strategically select types of insurance services and underwrite average and small size sum insured per policy to diversify their risks. In addition, they tend to be savvy investors. The opposite holds for the least efficient firms which concentrate in providing labor-intensive, small sum automobile insurance policies or underwrite large coverage policies for fewer policyholders. Balancing the mix of insurance types, spreading risk across insurance types or across number of policyholders, investing in high yield assets, or developing a market niche may prove beneficial for improving cost efficiency.     

基于DEA的机械制造业上市公司生产经营效率评价

文章建立评价东部地区25家机械制造行业上市公司生产经营效率的数据包络分析模型,测算了各上市公司的总体效率、技术效率、规模效率及其规模效益状况;分析了各类机械制造业上市公司在投入、产出及资源配置效率等方面的特点,进而提出促进机械制造业高效发展的若干建议。     

Knowledge capital,CEO power,and firm value: Evidence from the IT industry

Disruptive innovation dramatically changes the demand of a product market in the information technology (IT) industry. In response to the impact of disruptive innovation, IT firms that may be eliminated from the competitive race actively develop innovative products and adjust their operating strategies to strengthen their survivability in the fiercely competitive market. Thus, this study explores the factors that affect firm value in the IT industry under the impact of disruptive innovation. The empirical results reveal that knowledge capital and CEO power play crucial roles in explaining firm value. IT firms with powerful CEOs and increased knowledge capital have high firm values. The effects of knowledge capital and CEO power on firm value are especially significant for founder and duality CEO firms. Furthermore, the influence of CEO power is more prominent in periods of financial crisis.     

基于DEA的机械制造业上市公司生产经营效率评价

文章建立评价东部地区25家机械制造行业上市公司生产经营效率的数据包络分析模型,测算了各上市公司的总体效率、技术效率、规模效率及其规模效益状况;分析了各类机械制造业上市公司在投入、产出及资源配置效率等方面的特点,进而提出促进机械制造业高效发展的若干建议。     

Is the enterprise software sector still in transition? A research note

Advances in information technology have not only promoted competition since the 1980s, but they also advanced globalization in the 1990s. The information technology group has lost its momentum since 2000. One of its vital segments was the enterprise software software sector. The sector’s products—such as ERP, CRM—have spurred the speed and efficiency of scores of U.S. companies and service firms in the past fifty months. In 2000, the majority of enterprise software firms incurred losses. Were one to assume that these innovative firms have a real contribution to augment client firms’ efficiency, the question of how to analyze their performance in the absence of positive net income becomes a Gordian knot. To unravel, we have employed selected non-income based measures as proxy criteria. We classify twenty-two firms into three subsets: Pre-1990 and post-1990 firms, full-line and partial-line firms, and large-capitalized and small-capitalized firms, and perform a comparative analysis on the basis of the proxy measures. While pointing to significant differences in productivity and perceived risks among these subsets, our findings allow us to speculate that, one, cottage-industry status of the sector has ended, and, two, new beginnings, in the post-September era of anxiety, will crystallize in the form of a consolidated industry comprising a few firms that possess the intrinsic value of leveraging their innovative capabilities.     

Differentiated Duopoly with Asymmetric Costs

In this paper, we compare Bertrand and Cournot equilibria in a differentiated duopoly with linear demand and cost functions. We extend the Singh and Vives (1984) model by allowing for a wider range of cost and demand (product quality) asymmetry between firms. Focusing on the case of substitute goods, we show that both the efficient firm's profits and industry profits are higher under Bertrand competition when asymmetry is strong and/or products are weakly differentiated. Therefore, Singh and Vives's ranking of profits between the two modes of competition is reversed in a sizeable portion of the relevant parameter space. Contrary to the standard result with symmetric firms, we also show that product differentiation can reduce both the efficient firm's and industry profits, implying that a local incentive towards less differentiation may arise.     

Upstream Mergers,Downstream Competition,and R&D Investments

In this paper, we provide an explanation for why upstream firms merge, highlighting the role of R&D investments and their nature, as well as the role of downstream competition. We show that an upstream merger generates two distinct efficiency gains when downstream competition is not too strong and R&D investments are sufficiently generic: The merger increases R&D investments and decreases wholesale prices. We also show that upstream firms merge unless R&D investments are too specific and downstream competition is neither too weak nor too strong. When the merger materializes, the merger‐generated efficiencies pass on to consumers, and thus, consumers can be better off.     

What is the environmental performance of firms overseas? An empirical investigation of the global gold mining industry

Using a large plant level data set, this paper carries out an econometric analysis of the environmental performance of multinational firms in the gold mining industry worldwide. The aim of the analysis is to determine if, by looking at the actual environmental performance of firms (as opposed to inferring such behavior from location decisions), we can shed any light on important questions in the literature on firm location decisions: Do pollution havens exist in the gold mining industry? Do foreign controlled gold mines perform environmentally worse or better than their domestic counterparts? We develop different ways of measuring environmental performance within the context of a Bayesian stochastic production frontier approach. In particular, we derive different ways of measuring technical and environmental efficiency. When we implement these methods in our empirical work, we find that results are robust across different models and ways of measuring efficiency. We find that gold mines exhibit a wide range of environmental efficiencies; some are clearly more efficient than others. However, and most importantly for our questions, we find that this variation in efficiencies cannot be systematically related to mine characteristics such as whether they are foreign or domestically controlled or whether they are located in developed versus developing countries.