从产业关联角度分析煤电联动机制

煤电联动机制自出台以来,已经执行了两次煤电联动,电价相应两次提高,现在面临着是否进行第三次煤电联动的抉择。煤电联动缓解了电力行业的成本压力并缓和了煤电行业的紧张关系,却未能解决引发冲突的根本问题。文章拟用产业关联理论来分析煤电联动机制。     

Solving the Winner Determination Problem in a Divisible-Object Auction

In an auction of a divisible object, bidders' demand functions are often assumed to be nonincreasing, meaning that bidders are willing to pay less or the same price for every additional unit. Under this assumption, the optimal allocation that maximizes the auctioneer's revenue can be found using a greedy-based procedure. This article argues that situations may arise where a bidder may need to express her preferences through a nondecreasing demand function; when such a bidder is present in the auction, the greedy-based procedure does not guarantee the optimal allocation. Thus, this article proposes a mixed integer program that finds the optimal allocation in a divisible-object auction at which bidders submit their bids as arbitrary stepwise demand functions. The practical aspect of the mathematical program is presented by means of a simple yet illustrative example in a treasury bond auction setting. The results of the auctioneer's revenue are reported as a function of the number of bidders with nonincreasing and nondecreasing demand functions.     

植物纤维复合包装材料缓冲性能模型研究

根据农作物秸秆纤维复合材料静、动态测试数据,对该材料的缓冲性能进行分析;利用S—F本构关系框架,考虑到材料密度、形状函数、应变及应变率等影响因素,建立了复合包装材料的静态压缩本构模型和非线性动态压缩本构模型;并利用实验数据成功识别模型参数。结果表明,该本构模型和实验数据有很高的一致性,为解决农作物秸秆缓冲包装材料的缓冲包装设计、深入研究其缓冲性能、进一步开发利用农作物秸秆提供了重要的理论依据。     

重庆市柑橘区域比较优势分析

柑橘是劳动和技术密集型的产业,发挥柑橘的区域比较优势对于重庆市农业发展具有重要意义。该文采用了综合比较优势法测算了重庆市柑橘的区域比较优势,分析了重庆市柑橘表现出较高的区域比较优势的原因和进一步提高重庆市柑橘区域比较优势的限制性因素及对策。     

Military Modernization in Chinese Technical Progress and Industrial Innovation

This paper assesses the impact of military-related programs on Chinese technical progress since 1980. We argue that efforts to modernize weapons production and integrate the civilian and military sectors of the economy have increased China's innovation potential and led to an improvement in the country's overall technological capabilities. Although it is still too early to draw sweeping conclusions, China appears to be following a road taken by other great powers before it, where the pursuit of modern defense systems stimulates the development of advanced technologies.     

Corporate social responsibility perception in business students as future managers: a multifactorial analysis

This paper examines undergraduate business students' perception of corporate social responsibility (CSR) in cases in which they have not attended any specific course either dealing with CSR or providing training in ethics. A survey was conducted of 535 Spanish business students as future managers. The results show that the stakeholders' perspective deserves a huge attention for those students considering what the keys of business success are. Significant differences in perception were nevertheless identified when a multifactorial analysis was undertaken. Female students are more concerned about CSR issues. The maximization of value for shareholders is less valued by second‐ and third‐year students than by first‐year ones. The findings point to a number of important orientations for the future development of university curriculum.