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偏好市场下制造/再制造系统最优生产决策 被引量:39
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作者 谢家平 王爽 《管理科学学报》 CSSCI 北大核心 2011年第3期24-33,共10页
从消费者对再制造产品和新产品有着不同的需求偏好入手,引入市场需求偏好函数,构建单一垄断生产商利润最大化的带约束生产决策模型,探讨偏好市场下的两期和无限期的最优产量-价格决策策略.此外,通过对再制造经济优化模型的数据模拟,分... 从消费者对再制造产品和新产品有着不同的需求偏好入手,引入市场需求偏好函数,构建单一垄断生产商利润最大化的带约束生产决策模型,探讨偏好市场下的两期和无限期的最优产量-价格决策策略.此外,通过对再制造经济优化模型的数据模拟,分析消费者偏好系数对生产商利润、成本节约、产品价格的影响,为生产商的生产决策,以及政府如何影响消费者偏好决策提供指导建议. 展开更多
关键词 再制造 生产策略 有偏好市场 经济优化
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Econometric Analysis of Risk Preference Patterns among Smallholder Organic Producers in South Africa
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作者 Maggie Kisaka-Lwayo Ajuruchukwu Obi 《Journal of Agricultural Science and Technology(B)》 2013年第3期171-181,共11页
The article assesses the determinants of farmers' decisions to participate in organic farming, eliciting farmers risk preferences and empirically analysing farmer's sources of risk and risk management strategies. Th... The article assesses the determinants of farmers' decisions to participate in organic farming, eliciting farmers risk preferences and empirically analysing farmer's sources of risk and risk management strategies. The ordered probit results indicate that older farmers, who are less risk averse and reside in the sub-ward Ogagwini, Ezigani and Hwayi were more likely to be certified organic. Similarly, the propensity to adopt organic farming is positively correlated to household size, livestock ownership, asset base and tenure security. At higher pay-offs, farmers were intermediate to moderately risk-averse, with little variation according to personal characteristics. In general, price, production and financial risks were perceived as important sources of risk. Seven principal components, explaining 66.13% of the variation were extracted. Socio-economic factors having a significant effect on the various sources of risk were age, gender, education, location, information access and risk taking ability. The dimensions of risk strategies were named as diversification, precautionary savings and social networks. Results provide practical insights for policy changes relevant in motivating the adoption of organic practices, increasing smallholder farmers' capacity to manage risk and driving growth in the organic food market. 展开更多
关键词 Organic farming ordered probit principal components risk preferences.
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