Based on the system dynamics(SD) model, this paper puts forward a quantitative method to evaluate the earthquake emergency plan in China. Firstly, we analyze the disaster system structure and the content of plan. Usin...Based on the system dynamics(SD) model, this paper puts forward a quantitative method to evaluate the earthquake emergency plan in China. Firstly, we analyze the disaster system structure and the content of plan. Using the analysis results, we establish a system dynamics(SD) model and then carry out its simulation. According to the simulation results, the rescue effect using the plan of 2012 is better than that of 2006. From the policy level, in order to reduce loss, government should maintain communication smoothly, improve the ability of self and mutual help, strengthen the management of public opinion, and pay more attention to secondary disasters.展开更多
Is Chinese urbanization going to take a long time, or can its development goal be achieved by the government in a short time? What is the highest stable urbanization level that China can reach? When can China complete...Is Chinese urbanization going to take a long time, or can its development goal be achieved by the government in a short time? What is the highest stable urbanization level that China can reach? When can China complete its urbanization? To answer these questions, this paper presents a system dynamic(SD) model of Chinese urbanization, and its validity and simulation are justified by a stock-flow test and a sensitivity analysis using real data from 1998 to 2013. Setting the initial conditions of the simulation by referring to the real data of 2013, the multi-scenario analysis from 2013 to 2050 reveals that Chinese urbanization will reach a level higher than 70% in 2035 and then proceed to a slow urbanization stage regardless of the population policy and GDP growth rate settings; in 2050, Chinese urbanization levels will reach approximately 75%, which is a stable and equilibrium level for China. Thus, it can be argued that Chinese urbanization is a long social development process that will require approximately20 years to complete and that the ultimate urbanization level will be 75–80%, which means that in the distant future, 20–25% of China's population will still settle in rural regions of China.展开更多
推进装备高质量发展的关键是增强军队和地方系统跨组织质量管理合力,以此为目标研究两者之间的耦合协调关系。针对传统耦合协调度模型只考虑测算子系统内各个指标对整体有效程度,忽略了指标之间、指标与子系统之间相互作用对整体耦合效...推进装备高质量发展的关键是增强军队和地方系统跨组织质量管理合力,以此为目标研究两者之间的耦合协调关系。针对传统耦合协调度模型只考虑测算子系统内各个指标对整体有效程度,忽略了指标之间、指标与子系统之间相互作用对整体耦合效应产生影响的问题,采用可持续发展系统(sustainable development system, SDS)协调发展模型与耦合协调度模型结合的方法,在计算耦合度时将各子系统指标受其他子系统的总影响纳入其中,更加科学全面地测量整体耦合协调程度,最后通过实例验证了该方法的可行性。展开更多
目的探究“非遗+AI”新模式下湖南土特产包装的创新设计形式,传承和发展非遗文化,提升土特产包装的文化内涵,提高传统包装的科技含量,以适应当代消费者不断提升的审美和消费需求。方法通过问卷调查、深度访谈等方法,分析“非遗+AI”模...目的探究“非遗+AI”新模式下湖南土特产包装的创新设计形式,传承和发展非遗文化,提升土特产包装的文化内涵,提高传统包装的科技含量,以适应当代消费者不断提升的审美和消费需求。方法通过问卷调查、深度访谈等方法,分析“非遗+AI”模式与当代湖南土特产包装的设计现状,了解消费者对包装设计的不同需求,总结设计策略,并基于“非遗+AI”新模式下机器学习和深度学习技术,借助SD(Stable Diffusion,稳定扩散模型)架构下的Lora模型(Low-RankAdaptation of Large Language Models,大语言模型的低秩适用方法),进行踏虎凿花在岳阳王鸽土特产包装设计中的创新应用实践。结果生成出紧跟新时代数字技术,驱动非遗文化活态传承的包装设计图案,从而实现湖南土特产包装的创新设计探索。结论基于“非遗+AI”模式下的SD模型技术,对泸溪踏虎凿花进行创新转化并应用在湖南土特产岳阳王鸽包装设计中,既活化了传统手工艺的表达形式,又创新了土特产的包装表现手法,为其他非遗文化元素和产品包装的有机融合提供了新路径。展开更多
基金Supported by National Natural Science Foundation of China(91224007)
文摘Based on the system dynamics(SD) model, this paper puts forward a quantitative method to evaluate the earthquake emergency plan in China. Firstly, we analyze the disaster system structure and the content of plan. Using the analysis results, we establish a system dynamics(SD) model and then carry out its simulation. According to the simulation results, the rescue effect using the plan of 2012 is better than that of 2006. From the policy level, in order to reduce loss, government should maintain communication smoothly, improve the ability of self and mutual help, strengthen the management of public opinion, and pay more attention to secondary disasters.
文摘在软件定义网络(software-defined networking,SDN)中,OpenFlow交换机通常采用三态内容可寻址存储器(ternary content addressable memory,TCAM)存储流表,以支持快速通配查找.然而,TCAM采用并行查找方式,查找能耗高,因此有必要为OpenFlow交换机选择合适的TCAM容量,以平衡分组转发时延和能耗.针对软件定义数据中心网络(software-defined data center network,SD-DCN)这一典型应用场景,利用多优先级M/G/1排队模型刻画OpenFlow交换机的分组处理过程,进而建立OpenFlow分组转发时延模型.同时,基于网络流分布特性,建立TCAM流表命中率模型,以求解OpenFlow分组转发时延与TCAM容量的关系式.在此基础上,结合TCAM查找能耗,建立OpenFlow分组转发能效联合优化模型,并设计优化算法求解TCAM最优容量.实验结果表明:所提时延模型比现有模型更能准确刻画OpenFlow分组转发时延.同时,利用优化算法求解不同参数配置下的TCAM最优容量,为SD-DCN实际部署提供参考依据.
基金supported by the Key Project of the National Natural Science Foundation of China “the SD model and threshold value prediction of the interactive coupled effects between urbanization and eco-environment in mega-urban agglomerations” (Grant No. 41590844)the Independent Research Program of Tsinghua University (Grant No. 2015THZ01)
文摘Is Chinese urbanization going to take a long time, or can its development goal be achieved by the government in a short time? What is the highest stable urbanization level that China can reach? When can China complete its urbanization? To answer these questions, this paper presents a system dynamic(SD) model of Chinese urbanization, and its validity and simulation are justified by a stock-flow test and a sensitivity analysis using real data from 1998 to 2013. Setting the initial conditions of the simulation by referring to the real data of 2013, the multi-scenario analysis from 2013 to 2050 reveals that Chinese urbanization will reach a level higher than 70% in 2035 and then proceed to a slow urbanization stage regardless of the population policy and GDP growth rate settings; in 2050, Chinese urbanization levels will reach approximately 75%, which is a stable and equilibrium level for China. Thus, it can be argued that Chinese urbanization is a long social development process that will require approximately20 years to complete and that the ultimate urbanization level will be 75–80%, which means that in the distant future, 20–25% of China's population will still settle in rural regions of China.
文摘推进装备高质量发展的关键是增强军队和地方系统跨组织质量管理合力,以此为目标研究两者之间的耦合协调关系。针对传统耦合协调度模型只考虑测算子系统内各个指标对整体有效程度,忽略了指标之间、指标与子系统之间相互作用对整体耦合效应产生影响的问题,采用可持续发展系统(sustainable development system, SDS)协调发展模型与耦合协调度模型结合的方法,在计算耦合度时将各子系统指标受其他子系统的总影响纳入其中,更加科学全面地测量整体耦合协调程度,最后通过实例验证了该方法的可行性。
文摘目的探究“非遗+AI”新模式下湖南土特产包装的创新设计形式,传承和发展非遗文化,提升土特产包装的文化内涵,提高传统包装的科技含量,以适应当代消费者不断提升的审美和消费需求。方法通过问卷调查、深度访谈等方法,分析“非遗+AI”模式与当代湖南土特产包装的设计现状,了解消费者对包装设计的不同需求,总结设计策略,并基于“非遗+AI”新模式下机器学习和深度学习技术,借助SD(Stable Diffusion,稳定扩散模型)架构下的Lora模型(Low-RankAdaptation of Large Language Models,大语言模型的低秩适用方法),进行踏虎凿花在岳阳王鸽土特产包装设计中的创新应用实践。结果生成出紧跟新时代数字技术,驱动非遗文化活态传承的包装设计图案,从而实现湖南土特产包装的创新设计探索。结论基于“非遗+AI”模式下的SD模型技术,对泸溪踏虎凿花进行创新转化并应用在湖南土特产岳阳王鸽包装设计中,既活化了传统手工艺的表达形式,又创新了土特产的包装表现手法,为其他非遗文化元素和产品包装的有机融合提供了新路径。
