生态循环农业模式有利于转变农业发展方式、治理农业生态环境,成为破解农业资源环境约束的重要突破口,而科学评估现有生态循环农业模式、了解其再利用的物质循环导向十分重要。以湖北省浠水县郁港村恒瑞蓝莓种植专业合作社的“果–草–...生态循环农业模式有利于转变农业发展方式、治理农业生态环境,成为破解农业资源环境约束的重要突破口,而科学评估现有生态循环农业模式、了解其再利用的物质循环导向十分重要。以湖北省浠水县郁港村恒瑞蓝莓种植专业合作社的“果–草–羊”参与式种养生态循环农业模式为例,在运用归纳演绎法梳理农业模式当前面临的形势和存在的主要问题的基础上,分析“果–草–羊”参与式种养生态循环农业模式的运行流程、作用机制及其效果,并对生态循环农业模式进行了总结,为其今后发展提出相应对策建议。The ecological circular agriculture model is conducive to transforming the development mode of agriculture, managing the agricultural ecological environment, and becoming an important breakthrough in breaking the constraints of agricultural resources and environment. Scientific evaluation of existing ecological circular agriculture models and understanding of their material cycle orientation for reuse are very important. Taking the “fruit-grass-sheep” participatory ecological circular agriculture model of Hengrui Blueberry Planting Professional Cooperative in Yugang Village, Xishui County, Hubei Province as an example, based on the use of inductive deduction method to sort out the current situation and main problems faced by the model, this paper analyzes the operating process, mechanism and effect of the “fruit-grass-sheep” model, and summarizes the ecological circular agriculture model, proposing corresponding countermeasures and suggestions for its future development.展开更多
By coordination and cooperation between multi-agents, this paper proposes the network of intelligent agents which can reduce the search time needed to finding a parking place. Based on multi-agent model, the fined sol...By coordination and cooperation between multi-agents, this paper proposes the network of intelligent agents which can reduce the search time needed to finding a parking place. Based on multi-agent model, the fined solution is designed to help drivers in finding a parking space at anytime and anywhere. Three services are offered: the search for a vacant place, directions to a parking space and booking a place for parking. The results of this study generated by the platform MATSim transport simulation, show that our approach optimizes the operation of vehicles in a parking need with the aim of reducing congestion, and improve traffic flow in urban area. A comparison between the first method where the vehicles are random and the second method where vehicles are steered to vacant parking spaces shows that the minimization of time looking for a parking space could improve circulation by reducing the number of cars in the morning of 2% and 0.7% of the evening. In addition, the traffic per hour per day was reduced by approximately 4.17%.展开更多
General Fission(GEF)模型是描述裂变过程的一种半经验模型,它运用了量子力学和统计力学中的物理概念,并结合经验信息调整出了一组适用于不同裂变系统的参数,可以对大量原子核的裂变可观测量给出可靠的预测.本工作使用GEF模型计算了233...General Fission(GEF)模型是描述裂变过程的一种半经验模型,它运用了量子力学和统计力学中的物理概念,并结合经验信息调整出了一组适用于不同裂变系统的参数,可以对大量原子核的裂变可观测量给出可靠的预测.本工作使用GEF模型计算了233U中子诱发裂变产额的质量分布.结果表明,随着入射中子能量增加,对称裂变贡献逐渐增大,非对称裂变贡献逐渐减小;考虑了多次机会裂变,(n,f)裂变道相对贡献随着入射中子能量增加逐渐降低,而其他裂变道贡献增加;裂变产物的产额能量变化趋势与其在质量分布上的不同位置有关.展开更多
文摘生态循环农业模式有利于转变农业发展方式、治理农业生态环境,成为破解农业资源环境约束的重要突破口,而科学评估现有生态循环农业模式、了解其再利用的物质循环导向十分重要。以湖北省浠水县郁港村恒瑞蓝莓种植专业合作社的“果–草–羊”参与式种养生态循环农业模式为例,在运用归纳演绎法梳理农业模式当前面临的形势和存在的主要问题的基础上,分析“果–草–羊”参与式种养生态循环农业模式的运行流程、作用机制及其效果,并对生态循环农业模式进行了总结,为其今后发展提出相应对策建议。The ecological circular agriculture model is conducive to transforming the development mode of agriculture, managing the agricultural ecological environment, and becoming an important breakthrough in breaking the constraints of agricultural resources and environment. Scientific evaluation of existing ecological circular agriculture models and understanding of their material cycle orientation for reuse are very important. Taking the “fruit-grass-sheep” participatory ecological circular agriculture model of Hengrui Blueberry Planting Professional Cooperative in Yugang Village, Xishui County, Hubei Province as an example, based on the use of inductive deduction method to sort out the current situation and main problems faced by the model, this paper analyzes the operating process, mechanism and effect of the “fruit-grass-sheep” model, and summarizes the ecological circular agriculture model, proposing corresponding countermeasures and suggestions for its future development.
文摘By coordination and cooperation between multi-agents, this paper proposes the network of intelligent agents which can reduce the search time needed to finding a parking place. Based on multi-agent model, the fined solution is designed to help drivers in finding a parking space at anytime and anywhere. Three services are offered: the search for a vacant place, directions to a parking space and booking a place for parking. The results of this study generated by the platform MATSim transport simulation, show that our approach optimizes the operation of vehicles in a parking need with the aim of reducing congestion, and improve traffic flow in urban area. A comparison between the first method where the vehicles are random and the second method where vehicles are steered to vacant parking spaces shows that the minimization of time looking for a parking space could improve circulation by reducing the number of cars in the morning of 2% and 0.7% of the evening. In addition, the traffic per hour per day was reduced by approximately 4.17%.
