This paper studies the evolutionary process of cooperative behavior in a public goods game model with heterogeneous investment strategies in square lattices.In the proposed model,players are divided into defectors,coo...This paper studies the evolutionary process of cooperative behavior in a public goods game model with heterogeneous investment strategies in square lattices.In the proposed model,players are divided into defectors,cooperators and discreet investors.Among these,defectors do not participate in investing,discreet investors make heterogeneous investments based on the investment behavior and cooperation value of their neighbors,and cooperators invest equally in each neighbor.In real life,heterogeneous investment is often accompanied by time or economic costs.The discreet investors in this paper pay a certain price to obtain their neighbors'investment behavior and cooperation value,which quantifies the time and economic costs of the heterogeneous investment process.The results of Monte Carlo simulation experiments in this study show that discreet investors can effectively resist the invasion of the defectors,form a stable cooperative group and expand the cooperative advantage in evolution.However,when discreet investors pay too high a price,they lose their strategic advantage.The results in this paper help us understand the role of heterogeneous investment in promoting and maintaining human social cooperation.展开更多
With the increased number of PMUs in the power grid, effective high speed, realtime methods to ascertain relevant data for situational awareness are needed. Several techniques have used data from PMUs in conjunction w...With the increased number of PMUs in the power grid, effective high speed, realtime methods to ascertain relevant data for situational awareness are needed. Several techniques have used data from PMUs in conjunction with state estimation to assess system stability and event detection. However, these techniques require system topology and a large computational time. This paper presents a novel approach that uses real-time PMU data streams without the need of system connectivity or additional state estimation. The new development is based on the approximation of the eigenvalues related to the decoupled discreet-time power flow Jacobian matrix using direct openPDC data in real-time. Results are compared with other methods, such as Prony’s method, which can be too slow to handle big data. The newly developed Discreet-Time Jacobian Eigenvalue Approximation (DDJEA) method not only proves its accuracy, but also shows its effectiveness with minimal computational time: an essential element when considering situational awareness.展开更多
Discreet在中国的认证体系正式建于2001年。Discreet认证教师（DCI）和认证工程师（DEC）证书由DTC（Discreet Training Center)即Discreet授权培训中心颁发，目前全国范围内正式授权的DTC有近百家。只有参加了DTC培训，并通过了在线考...Discreet在中国的认证体系正式建于2001年。Discreet认证教师（DCI）和认证工程师（DEC）证书由DTC（Discreet Training Center)即Discreet授权培训中心颁发，目前全国范围内正式授权的DTC有近百家。只有参加了DTC培训，并通过了在线考试，才能获得由Discreet公司签发的认证证书。展开更多
2004年8月3日，Discreet公司在北京发布了3ds max 7，这是享有盛誉的三维建模、动画、渲染软件的最新版本。Discreet的3ds max7软件于8月10日至12日在加利福尼亚洛杉矾举行的国际SIGGRAPH展览会上首次公开亮相。3ds max在全世界的注册...2004年8月3日，Discreet公司在北京发布了3ds max 7，这是享有盛誉的三维建模、动画、渲染软件的最新版本。Discreet的3ds max7软件于8月10日至12日在加利福尼亚洛杉矾举行的国际SIGGRAPH展览会上首次公开亮相。3ds max在全世界的注册用户已超过280,000．去年销售额增长19％，毫无疑问，它是目前市场上最流行的专业三维建模和动画应用。展开更多
1.项目构成情况综合介绍: Smoke for IBM IntelliStation on Linux实现在同一个系统平台上实现剪辑和特效的全部工作,并提供了卓越的速度和工作流程的表现、实时互动,是行业领先的视觉特效工具。2.项目技术及工艺创新要点: 剪辑:(1)在...1.项目构成情况综合介绍: Smoke for IBM IntelliStation on Linux实现在同一个系统平台上实现剪辑和特效的全部工作,并提供了卓越的速度和工作流程的表现、实时互动,是行业领先的视觉特效工具。2.项目技术及工艺创新要点: 剪辑:(1)在同一时间线上实现多种不同格式的多主控格式编辑方式:(2)展开更多
基金Project supported by the Open Foundation of Key Laboratory of Software Engineering of Yunnan Province(Grant Nos.2020SE308 and 2020SE309).
文摘This paper studies the evolutionary process of cooperative behavior in a public goods game model with heterogeneous investment strategies in square lattices.In the proposed model,players are divided into defectors,cooperators and discreet investors.Among these,defectors do not participate in investing,discreet investors make heterogeneous investments based on the investment behavior and cooperation value of their neighbors,and cooperators invest equally in each neighbor.In real life,heterogeneous investment is often accompanied by time or economic costs.The discreet investors in this paper pay a certain price to obtain their neighbors'investment behavior and cooperation value,which quantifies the time and economic costs of the heterogeneous investment process.The results of Monte Carlo simulation experiments in this study show that discreet investors can effectively resist the invasion of the defectors,form a stable cooperative group and expand the cooperative advantage in evolution.However,when discreet investors pay too high a price,they lose their strategic advantage.The results in this paper help us understand the role of heterogeneous investment in promoting and maintaining human social cooperation.
文摘With the increased number of PMUs in the power grid, effective high speed, realtime methods to ascertain relevant data for situational awareness are needed. Several techniques have used data from PMUs in conjunction with state estimation to assess system stability and event detection. However, these techniques require system topology and a large computational time. This paper presents a novel approach that uses real-time PMU data streams without the need of system connectivity or additional state estimation. The new development is based on the approximation of the eigenvalues related to the decoupled discreet-time power flow Jacobian matrix using direct openPDC data in real-time. Results are compared with other methods, such as Prony’s method, which can be too slow to handle big data. The newly developed Discreet-Time Jacobian Eigenvalue Approximation (DDJEA) method not only proves its accuracy, but also shows its effectiveness with minimal computational time: an essential element when considering situational awareness.
文摘Discreet在中国的认证体系正式建于2001年。Discreet认证教师（DCI）和认证工程师（DEC）证书由DTC（Discreet Training Center)即Discreet授权培训中心颁发，目前全国范围内正式授权的DTC有近百家。只有参加了DTC培训，并通过了在线考试，才能获得由Discreet公司签发的认证证书。
文摘2004年8月3日，Discreet公司在北京发布了3ds max 7，这是享有盛誉的三维建模、动画、渲染软件的最新版本。Discreet的3ds max7软件于8月10日至12日在加利福尼亚洛杉矾举行的国际SIGGRAPH展览会上首次公开亮相。3ds max在全世界的注册用户已超过280,000．去年销售额增长19％，毫无疑问，它是目前市场上最流行的专业三维建模和动画应用。
文摘1.项目构成情况综合介绍: Smoke for IBM IntelliStation on Linux实现在同一个系统平台上实现剪辑和特效的全部工作,并提供了卓越的速度和工作流程的表现、实时互动,是行业领先的视觉特效工具。2.项目技术及工艺创新要点: 剪辑:(1)在同一时间线上实现多种不同格式的多主控格式编辑方式:(2)
