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1.
政府渔业补助政策与博弈 总被引:1,自引:0,他引:1
渔业补助政策是政府为弥补市场经济缺陷而采取的重要措施,本文应用博弈论对政府与渔民的互动博弈展开研究,并确立了混合策略模型下的政府和渔民各自最佳选择概率,达到纳什均衡,这对于解释当前政府渔业补助政策内涵与指导修订补助政策有参考意义。 相似文献
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Abstract To evaluate the suitability of angling groundbaits as a fish feed and the potential for nutrient loss, the macronutrient digestibility of four groundbaits was investigated in carp, Cyprinus carpio L., using a sieving method of faeces collection and chromic oxide. Apparent digestibility coefficients (ADCs) of protein and lipids were >80% for all angling baits. ADCs of nitrogen-free extracts and phosphorus (P) differed significantly between the test diets, probably because of divergent feed compositions and ingredient treatments. The generally high digestibility estimates indicated that fish feeding on angling groundbait will benefit from this food source. The differences in nutrient digestibility suggested that type of groundbait and ingredient used will have a major effect on potential eutrophication and fish production caused by groundbaiting. The principle of groundbaits to protect the environment should be to minimise the P-content of the groundaits and maximising P-digestibility and P-retention efficiency. 相似文献
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Relationships between catch and effort in Fijian multispecies reef fisheries subject to different levels of exploitation 总被引:2,自引:0,他引:2
Abstract The catch-per-unit-effort (CPUE) and value-of-catch-per-unit-effort (VPUE) of reef-associated fish species from six Fijian native fishing grounds ( qoliqoli ) subject to different fishing intensities were determined using records of fishing activity from a voluntary logbook scheme. Line and spear fishing techniques were used for more than half the total fishing time (h person-1 d-1 ) in all qoliqoli , and yet the favoured technique in a given qoliqoli was frequently less efficient (lower CPUE) than other techniques. The popularity of relatively ineffective fishing methods implies that fishermen did not always attempt to maximize their catch rates. To compare fishing effort in different qoliqoli , all effort was rescaled on the basis of its recorded efficiency (measured as multispecies CPUE) and expressed as hours equivalent to boat-based spear fishing over coral by day to catch fish for sale. Total fishing intensity in the six qoliqoli ranged from 72 to 4310 h km-2 reef year-1 . The relationship between catch and effort was linear at all fishing intensities, suggesting that the qoliqoli were all fished on a sustainable basis. Furthermore, whilst there was a significant difference in CPUE and VPUE between the one or two qoliqoli with lowest fishing intensity and all the others, there were no significant differences between these other qoliqoli in terms of the VPUE of the saleable multispecies boat catch or the CPUE of species from piscivorous and carnivorous genera ( Epinephelus, Lethrinus and Plectropomus ) which the fishermen prefer to catch. 相似文献
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胡大浚 《湖南农业大学学报(自然科学版)》2015,(3):31-36
研究市场需求和生产成本同时扰动时非线性需求供应链的最优应对策略.首先在稳定条件下提出供应链的收益共享协调合约;生产成本和需求扰动会导致原有的收益共享合约不再协调,提出了供应链在一体化决策时应对双因素同时发生扰动的最优策略;进一步提出了改进的收益共享合约协调分散化决策的供应链系统.最后运用数值实验对模型进行了验证. 相似文献
6.
利用博弈论的方法对国防工业发展中已进入国防工业的企业群、待进入国防工业的企业群和政府的对策进行分析,并得出结论:政府首先要指导已进入国防工业的企业群合理定位;其次要考虑制定多大程度的保护政策来保护已进入国防工业企业的发展和利益;最后政府需要对军工企业的诉讼制定合理的支持标准,使已进入国防工业企业始终处于竞争环境良性发展.当然政府作出以上决策的主要依据是在保证本国安全的前提下使国防工业企业的利润实现最大化. 相似文献
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Uses of game resources are under constant debate. One such debate focuses on hunting tourism and its contributions to rural economics. To prioritize future investment and inform policy decisions, it is necessary to identify the full economic consequences of the operation of hunting tourism companies in rural areas. However, the true economic significance of these typically small-scale companies is not apparent when examined on an industrial scale. These companies may nevertheless serve as a sustainable solution to local-scale rural challenges. In this article, the regional economic significance of hunting tourism is estimated for the East Lapland sub-region of northern Finland through the use of Computable General Equilibrium simulation models. Although these models are known to effectively evaluate short- and long-term regional economic effects of industries such as tourism, they have not previously been applied to evaluate hunting tourism. 相似文献
9.
The management of urban reconstruction is a process of game between the government and developers.It is helpful that the interest and its equilibrium for the relative parties involved in the reconstruction process are considered during the formation of government policy.This paper analyzes the environment for the policy constitution and establishes a model for strategy making based on the game theory.This model provides a basic foundation to improve the management ability of the government in the reconstruction process.Finally,in this paper some strategic issues are suggested to cope with the challenges from urban reconstruction in China. 相似文献
10.
Knowledge sharing is the important way in which enterprises create organizational knowledge and obtain competition advantage.Scholars always have difference viewpoints about the motivators in knowledge sharing.This paper(analyzes) the incomplete information game and the choice of the motivators in knowledge sharing.If the knowledge(acceptant) offers motivators to the knowledge owner,knowledge sharing might make the participants obtain knowledge-sharing incomes.If knowledge-sharing incomes can make up the participants' costs,knowledge sharing can be caught through.Because the information of knowledge's value is incomplete,enterprises need knowledge managers and organizational additional motivators promote knowledge sharing. 相似文献