从联合概率密度的角度分析随机非线性系统的随机分岔行为,现有研究通常需要人为判断概率密度特征有无本质变化,并且此过程无法自动化.该文提出了一种新的计算方法,能够实现随机分岔点的自动计算.以强噪声激励下的双稳态Van der Pol系统...从联合概率密度的角度分析随机非线性系统的随机分岔行为,现有研究通常需要人为判断概率密度特征有无本质变化,并且此过程无法自动化.该文提出了一种新的计算方法,能够实现随机分岔点的自动计算.以强噪声激励下的双稳态Van der Pol系统为例,分析了阻尼系数变化对随机动力学响应的影响.研究结果表明,随着阻尼系数的增加,系统的联合概率密度会发生三次分岔,呈现四种不同类型的几何特征.该文提出的方法有望应用于其他随机非线性系统的随机分岔行为研究.展开更多
Key shipbuilding enterprise:main force Fujian Chuanzheng Shipbuilding Industry is a key shipbuilding enterprise in Fujian province,acting as the main force in the high-quality development of the provincial shipbuildin...Key shipbuilding enterprise:main force Fujian Chuanzheng Shipbuilding Industry is a key shipbuilding enterprise in Fujian province,acting as the main force in the high-quality development of the provincial shipbuilding and offshore engineering industry.In the first three quarters of 2022,the company completed a total industrial output value of 3.519 billion yuan,accounting for 77.4%of the annual plan of 4.549 billion yuan,a year-on-year growth of 28.5%,ranking in the forefront of the province's shipbuilding industry.展开更多
The“Exploration 2”survey ship embodies wisdom and hard work of the Chinese Academy of Sciences(CAS)Deep-Sea Institute expert team,Fujian Mawei Shipbuilding Co.,Ltd.technical team and many of domestic powerful resear...The“Exploration 2”survey ship embodies wisdom and hard work of the Chinese Academy of Sciences(CAS)Deep-Sea Institute expert team,Fujian Mawei Shipbuilding Co.,Ltd.technical team and many of domestic powerful research and test participating units.展开更多
Ningde Dongyang Shipbuilding Engineering Co., Ltd., located in the east of Fujian Province, has achieved a breakthrough in five aspects of "ship supervision ,"nondeslrut-live testing",''welder t...Ningde Dongyang Shipbuilding Engineering Co., Ltd., located in the east of Fujian Province, has achieved a breakthrough in five aspects of "ship supervision ,"nondeslrut-live testing",''welder training","ship repair" and ''building overseas maintenance basr*, by breaking the traditional concept and adhering to the operation road with its own characteristics.展开更多
文摘从联合概率密度的角度分析随机非线性系统的随机分岔行为,现有研究通常需要人为判断概率密度特征有无本质变化,并且此过程无法自动化.该文提出了一种新的计算方法,能够实现随机分岔点的自动计算.以强噪声激励下的双稳态Van der Pol系统为例,分析了阻尼系数变化对随机动力学响应的影响.研究结果表明,随着阻尼系数的增加,系统的联合概率密度会发生三次分岔,呈现四种不同类型的几何特征.该文提出的方法有望应用于其他随机非线性系统的随机分岔行为研究.
文摘Key shipbuilding enterprise:main force Fujian Chuanzheng Shipbuilding Industry is a key shipbuilding enterprise in Fujian province,acting as the main force in the high-quality development of the provincial shipbuilding and offshore engineering industry.In the first three quarters of 2022,the company completed a total industrial output value of 3.519 billion yuan,accounting for 77.4%of the annual plan of 4.549 billion yuan,a year-on-year growth of 28.5%,ranking in the forefront of the province's shipbuilding industry.
文摘The“Exploration 2”survey ship embodies wisdom and hard work of the Chinese Academy of Sciences(CAS)Deep-Sea Institute expert team,Fujian Mawei Shipbuilding Co.,Ltd.technical team and many of domestic powerful research and test participating units.
文摘Ningde Dongyang Shipbuilding Engineering Co., Ltd., located in the east of Fujian Province, has achieved a breakthrough in five aspects of "ship supervision ,"nondeslrut-live testing",''welder training","ship repair" and ''building overseas maintenance basr*, by breaking the traditional concept and adhering to the operation road with its own characteristics.