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61.
Ronnie S. Natawidjaja Irlan A. Rum Lies Sulistyowati Zumi Saidah 《International Review of Retail, Distribution & Consumer Research》2014,24(5):564-580
Demand for fresh fruits and vegetables in Indonesia has been continuously growing as the result of increasing incomes, high growth of the urban population, and modern retail development. The growth of modern retail chains in Indonesia in the last few decades has intrigued some development experts and practitioners because it had been expected to provide greater opportunities for linking small farmers to high value globalized market chains. The modern private sector would, it was hoped, incorporate small producers with the goal of both securing supply and contributing to poverty reduction. However, in terms of mangoes, previous studies have indicated that only a very small proportion of local production is marketed to modern retail chains and/or exported. The main objective of this study is to identify the factors affecting farmers' participation in modernizing retail channels. The study randomly selected 636 mango farmers from the two main mango production zones in Indonesia, West Java and East Java provinces. The study shows that an expansion of the modernized retail segment has not always benefitted local producers, especially smallholder farmers. It is demonstrated that smallholder farmer participation could be higher when the level of commercialization in the market is high and/or retail procurement was already more modernized. Factors that increase farmer capacity to participate in the modern retail chain are irrigation, farm tools, and infrastructure. To increase smallholder farmer participation, the study suggests a policy of encouraging enforcement of quality standards at wholesale markets, technical assistance to farmers relating to value-adding postharvest activities, and improvements in rural infrastructure. 相似文献
62.
Pollution, Factor Taxation and Unemployment 总被引:2,自引:2,他引:0
When consumers choose between clean and dirty goods and the labour market clears, a green tax reform may not bring about a double dividend in the sense of increasing environmental quality and increasing employment. However, when firms choose between clean and dirty factors of production, and when there is unemployment, such a result is very likely to occur. The paper investigates a model of a monopolistic firm where labour and energy are factors of production and trade unions negotiate the wage rate, accepting some unemployment as a result of aggressive wage demands. It is shown that, in such a framework, a green tax reform will boost employment provided it does not increase the net-of-tax wage rate by too much. This is the case when the elasticity of substitution between labour and energy is greater than one, equal to one or not too far below one. 相似文献
63.
We study optimal hedging of barrier options, using a combination of a static position in vanilla options and dynamic trading of the underlying asset. The problem reduces to computing the Fenchel–Legendre transform of the utility-indifference price as a function of the number of vanilla options used to hedge. Using the well-known duality between exponential utility and relative entropy, we provide a new characterization of the indifference price in terms of the minimal entropy measure, and give conditions guaranteeing differentiability and strict convexity in the hedging quantity, and hence a unique solution to the hedging problem. We discuss computational approaches within the context of Markovian stochastic volatility models. 相似文献
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Multiscale stochastic volatility models have been developed as an efficient way to capture the principal effects on derivative pricing and portfolio optimization of randomly varying volatility. The recent book by Fouque et al. (Multiscale Stochastic Volatility for Equity, Interest-Rate and Credit Derivatives, 2011) analyzes models in which the volatility of the underlying is driven by two diffusions – one fast mean-reverting and one slowly varying – and provides a first order approximation for European option prices and for the implied volatility surface, which is calibrated to market data. Here, we present the full second order asymptotics, which are considerably more complicated due to a terminal layer near the option expiration time. We find that to second order, the implied volatility approximation depends quadratically on log-moneyness, capturing the convexity of the implied volatility curve seen in data. We introduce a new probabilistic approach to the terminal layer analysis needed for the derivation of the second order singular perturbation term, and calibrate to S&P 500 options data. 相似文献
66.
Ronnie Schöb 《Environmental and Resource Economics》1996,8(4):399-416
This paper analyses the optimal choice of second-best optimal environmental policies. Using a partial equilibrium model, the paper first reconfirms the well-known result that the existence of a double dividend (in its weak definition) favours environmental policy instruments which maximise tax revenues for a given improvement in environmental quality. Additional revenues can be used to reduce the distortion of existing taxes such as taxes on labour and capital income. Without uncertainty, environmental taxes and auctioned permits are equally appropriate. In the presence of uncertainty, however, the optimal choice of taxes or tradable permits depends on the relative magnitudes of the marginal environmental damage and the marginal benefit from consuming a polluting good. In the second part, the paper, therefore, analyses how the revenue capacity affects the optimal choice of environmental policy instruments in the presence of uncertainty. The paper shows that the first-best choice rule between price and quantity regulation (Weitzman, 1974) remains valid in a second-best world with distortionary taxation. 相似文献
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Ronnie Lessem 《Accounting, Organizations and Society》1977,2(4):279-294
This paper presents a critical assessment of the social report practices of 400 large companies. The major shortfalls encountered involved, firstly, an overconcentration on conventional wisdom; secondly, a lack of inclination to fully exploit new avenues which had been tentatively opened up; thirdly, a tendency to rationalise away inadequate performance; and, finally, an inclination to simplify unduly in the face of complexity. 相似文献
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