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刘家小流域系统农林牧生产优化结构模式的研究
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作者 王棣 郝水平 《山西林业科技》 北大核心 1992年第3期24-29,共6页
本文对刘家小流域系统农林牧生产优化结构模式进行了研究。根据刘家小流域系统内的自然资源,以及农林牧各项投入——产出分析,按生态经济系统理论,采用数学规划方法,以纯收益最大为目标函数,进行了优化求解,到2000年刘家小流域年纯收益... 本文对刘家小流域系统农林牧生产优化结构模式进行了研究。根据刘家小流域系统内的自然资源,以及农林牧各项投入——产出分析,按生态经济系统理论,采用数学规划方法,以纯收益最大为目标函数,进行了优化求解,到2000年刘家小流域年纯收益可达108.5万元,人均1120元。并对模型中所有变量和约束方程常系数进行了敏感性分析和影子价格计算。 展开更多
关键词 水流域系统 生产优化结构 模式
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Research on the Supply-Side Reform Promotes Economic Growth Model in Xi’an
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作者 Weifeng Chen 《International Journal of Technology Management》 2017年第1期38-40,共3页
Xi’an is situated at west China, the industrial structure the restriction function which grows to the economy is not balanced more obvious, uni? es the Xi’an actual situation, speeds up the supplies side constituti... Xi’an is situated at west China, the industrial structure the restriction function which grows to the economy is not balanced more obvious, uni? es the Xi’an actual situation, speeds up the supplies side constitutive property reform, the promotion industrial structure optimized promotion appears especially importantly. Firstly, this paper analyzes the present situation and development trend of supply-side reform at home and abroad. Based on the situation of Xi’an, the author analyzes ? ve production-side reforms, such as “de-production,” “de-stocking,” “deleveraging”, “cost reduction” The author puts forward the main problems of Xi’an’s supply-side reform to promote economic growth. Finally, it puts forward the path choice of supply-side reform to promote economic growth in Xi’an. Adhere to reform and expand and demand side, supply side in xian accurate docking, supply and demand in xi ‘an supply side reform should constantly improve production quality, give full play to the market on the supply side of the reform main body role and foster the subject of the new. 展开更多
关键词 Xi’an City Supply-side Structural Reform Economic Growth
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Optimizing forestry industrial structure based on the framework of rationalization,advancement and ecologicalization
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作者 XING Mei-hua HUANG Guang-ti +1 位作者 ZHANG Jun-biao TAN Shi-ming 《Ecological Economy》 2010年第4期395-406,共12页
Under the target of the sustainable development,optimization of forestry industrial structure contains rationalization and advancement of forestry industrial structure in the traditional sense,as well as ecologicaliza... Under the target of the sustainable development,optimization of forestry industrial structure contains rationalization and advancement of forestry industrial structure in the traditional sense,as well as ecologicalization of forestry industrial structure.The connotation of optimization of forestry industrial structure is analyzed at first,and then the paper chooses the typical evaluation indexes from the three sides of rationalization,advancement and ecologicalization to evaluate the current situation of the regional forestry industrial structure.With the aid of the theory of fuzzy mathematics and information entropy,the paper establishes a fuzzy evaluation model which is based on information entropy for optimization of forestry industrial structure,and the evaluation model is applied in the study for the current situation of forestry industrial structure from 2000 to 2006 in Hubei province.The results show that the grade of forestry industrial structure is bad basically during the research,of which the overall level of forestry industrial structure of Hubei province is poor,the degree of utilizing forest resource is lower,and ecological environment in the forest region has been damaged to some extent.On this basis,the author presents the countermeasure to promote the optimization of forestry industrial structure. 展开更多
关键词 Forestry industrial structure OPTIMIZATION Ecologicalization Fuzzy mathematics Entropy method
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An Empirical Research of Producer Services' Cluster Development To Regional Industrial Structure Optimization And Upgrading --Based on the Research of 16 central cities' Panel Data in Yangtze River Delta
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作者 LI Zhen-bo ZHANG ming-dou 《International Journal of Technology Management》 2015年第10期80-87,共8页
Based on the 16 central cities' Panel Data in Yangtze River Delta, location quotient index is used in this paper to measure and analyze the current cluster situation of producer services in Yangtze River Delta, fixed... Based on the 16 central cities' Panel Data in Yangtze River Delta, location quotient index is used in this paper to measure and analyze the current cluster situation of producer services in Yangtze River Delta, fixed effects model of Panel Data model is also used in this paper, and the industrial structure is taken as the dependent variable, while the core explanatory variables is the degree of producer services' cluster development, which is calculated by location quotient, moreover, three control variables introduced in this paper and they are technology advantage, education level and R&D spending, and the mentioned above is to empirically study the impacts of producer services' cluster development to the regional industrial structure. As a result, producer services' cluster development has a significant positive role in promoting the regional industrial structure optimization and upgrading, though the extent is not yet a big push and is still to be further strengthened. In this paper, it has provided a strong evidence that under China' s new normal economy, producer services is badly needed to promote regional industrial structure, and finally it makes specific suggestions based on the current cluster situation of producer services in Yangtze River Delta. 展开更多
关键词 producer services location quotient regional industrial structure optimization and upgrading
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