Agency theory and the influence of equity ownership structure on corporate diversification strategies

We articulate the agency theory view of managerial decision making and its implications for corporate diversification strategies. From agency theory, we generate testable predictions for the relation between equity ownership structure and diversification strategies and review the existing evidence on this relation. On balance, the evidence strongly supports the view that ownership structure influences corporate strategy. Copyright © 1999 John Wiley & Sons, Ltd.     

Mean square error for the Leland–Lott hedging strategy: convex pay-offs

Leland’s approach to the hedging of derivatives under proportional transaction costs is based on an approximate replication of the European-type contingent claim V _T using the classical Black–Scholes formula with a suitably enlarged volatility. The formal mathematical framework is a scheme of series, i.e., a sequence of models with transaction cost coefficients k _n =k ₀ n ^−α , where α∈[0,1/2] and n is the number of portfolio revision dates. The enlarged volatility [^(s)]_n\widehat{\sigma}_{n} in general depends on n except for the case which was investigated in detail by Lott, to whom belongs the first rigorous result on convergence of the approximating portfolio value Vⁿ_TV^{n}_{T} to the pay-off V _T . In this paper, we consider only the Lott case α=1/2. We prove first, for an arbitrary pay-off V _T =G(S _T ) where G is a convex piecewise smooth function, that the mean square approximation error converges to zero with rate n ^−1/2 in L ² and find the first order term of the asymptotics. We are working in a setting with non-uniform revision intervals and establish the asymptotic expansion when the revision dates are t_iⁿ=g(i/n)t_{i}^{n}=g(i/n), where the strictly increasing scale function g:[0,1]→[0,1] and its inverse f are continuous with their first and second derivatives on the whole interval, or g(t)=1−(1−t) ^β , β≥1. We show that the sequence n^1/2(V_Tⁿ-V_T)n^{1/2}(V_{T}^{n}-V_{T}) converges in law to a random variable which is the terminal value of a component of a two-dimensional Markov diffusion process and calculate the limit. Our central result is a functional limit theorem for the discrepancy process.     

A reconsideration of the link between vertical externality and managerial incentives

Previous research revealed that the strategic role of delegation contracts disappears if two quantity‐setting firms outsource input production to a monopolistic supplier. I show that this role is restored if the assumption of a downstream duopoly is relaxed. Thus, delegation contracts allow downstream profit‐maximizing owners to commit their firms to a behavior that differs from their preferences. This behavior varies nonmonotonically with the number of firms in the downstream market. Corresponding deviations from profit maximization are larger if the upstream monopolist makes a price precommitment. But little to no deviation occurs if the number of firms is large.     

Agricultural technology and land use futures: The UK case

This paper explores how agricultural technology has interacted with recent land use in the UK and how it might do so in the next 50 years. From 1960 to 1985, farmers successfully used technology to increase the output of crop and animal products per unit of land and particularly of labour. This reduced the number of people employed in agriculture, and promoted larger and more specialised farm enterprises. Between 1985 and 2006, food prices were relatively low, and although labour productivity continued to increase, land productivity remained relatively static. However during this period, farmers started to address the effects of agriculture on reduced water quality and habitat loss.For established agricultural products, technological innovation tends to have an incremental effect, working through genetic improvement, the removal of abiotic and biotic stress (e.g. crop nutrition and protection, irrigation and drainage, and animal nutrition, health and housing) and the substitution of labour. Whereas the first two processes tend to be scale-neutral, the substitution of labour is usually easiest to achieve on larger farms. Other key areas for technological innovation include addressing air, soil and water quality, biodiversity, waste reduction, and information management. Over the next 50 years, large step-changes in land use arising from agricultural technology are predicted to arise from the development of new markets for agricultural products. A strong bioenergy sector will strengthen the links between crop commodity and energy prices and will have a major effect on future land use. Climate change and the regulation of greenhouse gas emissions will alter the relative profitability of crop and animal production systems. Lastly, increased public awareness of the links between food, health and the environment could substantially shift the demand for specific agricultural products.Continual improvements in agricultural technology are pivotal to providing society with the flexibility to balance the challenges of improving human well-being with the management of the planet's ecosystem. Increased technological innovation increases the probability that agricultural land can be used for other purposes, but the exact relationship is dependent on trade and environmental policies. The large external effects of agriculture mean that decisions regarding the adoption of future technologies should be taken by farmers working with other stakeholders.     

High food commodity prices: will they stay? who will pay?

Much of the public discussion of the food price crisis has focused on the sharply increased use of food commodities for biofuel production, framing debate in simple food versus fuel terms. Reality is more complex. Multiple forces drove food prices to high levels and, according to findings we report in this article, these forces will sustain high prices over the medium term. We also find that the distinction between high world prices for food commodities and the consumer costs of food is an important one to make. Food consumers do not buy raw food commodities at international prices. The degree to which the price of traded food commodities and the price of food are related depends on a long list of factors, most of which operate to dampen price transmission. In the search for appropriate policy response, it is essential to measure consumer effects correctly and to apportion properly the causes of current high prices.     

公共卫生支出、健康人力资本与经济增长

本文通过构建随机动态一般均衡模型（DSGE）和基于该模型的数值模拟,分析了公共卫生支出、健康人力资本和经济增长的关系。主要结论有：从长期看,扩大公共卫生支出、医疗技术革新均会带来宏观经济的繁荣和居民福利的提升;从短期看,恶性突发卫生事件的冲击将给宏观经济的波动带来显著的负面影响,但这一影响一般会在短期内得以消除。本文进一步借助中国1998～2008年的面板数据,以数据包络分析（DEA）得到的公共卫生支出投入产出效率作为健康人力资本的代理变量,进行计量分析后发现：健康人力资本对本地区和相邻地区的经济增长均有显著的促进作用;在经济增长水平较高、健康人力资本集聚的地区,健康人力资本可以更有效地促进经济增长,即存在显著的门限效应。     

从“全面禁伐”到“分类经营”的改革——关于重庆市天保工程区的调研报告

重庆市十年天保禁伐成效显著,林业分类经营改革又成为实现林业又好又快发展的一个新的转折点。其经验值得宣传与推广。针对改革中出现的公益林管护和补偿政策、森林采伐和管理、林权证使用和管理等问题,提出若干改革建议。     

Explicating the ‘like’ on Facebook brand pages: The effect of intensity of Facebook use,number of overall ‘likes’, and number of friends' ‘likes’ on consumers' brand outcomes

This study examined the relationship between the number of overall ‘likes’ and friends' ‘likes’ on Facebook brand pages in influencing consumers' brand attitude, brand trust, brand involvement, and purchase intention, drawing upon theoretical concepts including diffusion of innovations, social capital theory, strength of weak ties, sociometric versus perceptual popularity, and prior research in online impression formation. Results of a 2 × 2 experiment revealed significant main effects of number of overall ‘likes’ and friends' ‘likes’ on key dependent measures. A significant interaction effect was also found between overall ‘likes’ and friends' ‘likes’. Additionally, intensity of Facebook use also mediated the relationships between number of overall ‘likes’ and friends' ‘likes’ with brand attitude, brand trust, and purchase intention.     

Bank Regulatory Agreements and Real Estate Lending

Recent studies have found that banks with low capital ratios have significantly decreased their lending to the real estate sector. This correlation between real estate lending and bank capital could be the result of voluntary decisions by banks to recapitalize, or it could be the result of direct actions taken by bank regulators. We find that banks with low capital ratios reduce their real estate lending substantially more after formal regulatory actions have been initiated by regulators. Furthermore, this reduction in lending is particularly large for the categories of real estate borrowers most likely to be bank dependent.     

An investigation into the financial characteristics of dividend initiating firms

Dividend announcements are said to have an informational content concerning the value of the firm. Most studies on dividend announcements have involved models to predict change or to analyze that informational content. The purpose of this study is to establish the financial characteristics of firms that initiate or significantly increase dividends. One hundred firms were selected for study. Fifty of the firms had recently either initiated or significantly increased dividends; the other fifty were selected at random. Significant differences were found in the financial characteristics of the two groups. The results were generally consistent with previous studies and finance theory. There were however, two genuine surprises. The dividend initiating firms possessed lower levels of liquidity and activity than firms selected at random. This suggests that dividends may not be paid to dispose of excess cash, but to provide shareholders with some tangible reward in periods of low liquidity and little activity.