The causes and the problems of integration of scientific ＆ technical innovation （ISTI） and inevitability are proposed. The status of domestic scientific ＆ technical innovation is analysed. A series of emergent man...The causes and the problems of integration of scientific ＆ technical innovation （ISTI） and inevitability are proposed. The status of domestic scientific ＆ technical innovation is analysed. A series of emergent managerial problems caused by the system ISTI （SISTI） are pointed out. Because of Hall three dimensions structure＇s enlightenment, a three dimensional logical net diagram in which the system integration of innovation based on problem in real world but not on disciplinary logic is drawn. The intelligent group＇ s need span is greater under the conditions of relatively low material level than common groups who have lower degree of education. The SISTI is composed by multi-rule and intelligent multi-agent behavior. It is concluded that the logical relationships of integrated technology which based on the author＇s experience and observation must be considerded for a valid management of SISTI.展开更多
The establishment and rapid rise of the European Union (EU) have increasingly made Europe an independent force. Objectively, the enlargement of both the EU and NATO has speeded up the process of European integration, ...The establishment and rapid rise of the European Union (EU) have increasingly made Europe an independent force. Objectively, the enlargement of both the EU and NATO has speeded up the process of European integration, and "One important link of Russia’s diplomacy展开更多
The Owen’s T function is presented in four new ways, one of them as a series similar to the Euler’s arctangent series divided by 2π, which is its majorant series. All possibilities enable numerically stable ...The Owen’s T function is presented in four new ways, one of them as a series similar to the Euler’s arctangent series divided by 2π, which is its majorant series. All possibilities enable numerically stable and fast convergent computation of the bivariate normal integral with simple recursion. When tested computation on a random sample of one million parameter triplets with uniformly distributed components and using double precision arithmetic, the maximum absolute error was 3.45 × 10<sup>-</sup><sup>16</sup>. In additional testing, focusing on cases with correlation coefficients close to one in absolute value, when the computation may be very sensitive to small rounding errors, the accuracy was retained. In rare potentially critical cases, a simple adjustment to the computation procedure was performed—one potentially critical computation was replaced with two equivalent non-critical ones. All new series are suitable for vector and high-precision computation, assuming they are supplemented with appropriate efficient and accurate computation of the arctangent and standard normal cumulative distribution functions. They are implemented by the R package Phi2rho, available on CRAN. Its functions allow vector arguments and are ready to work with the Rmpfr package, which enables the use of arbitrary precision instead of double precision numbers. A special test with up to 1024-bit precision computation is also presented.展开更多
为改善载货车辆极限状态的操纵稳定性和侧翻稳定性,在非线性工作域内进行主动横摆和侧倾力矩的改进型滑模控制,实现载货车辆横摆-侧倾运动的联合控制。利用扇形域建立非线性悬架和轮胎的T-S模型,结合模糊观测器获取悬架和轮胎动态模型...为改善载货车辆极限状态的操纵稳定性和侧翻稳定性,在非线性工作域内进行主动横摆和侧倾力矩的改进型滑模控制,实现载货车辆横摆-侧倾运动的联合控制。利用扇形域建立非线性悬架和轮胎的T-S模型,结合模糊观测器获取悬架和轮胎动态模型参数。基于T-S方法的横摆-侧倾联合控制模型,考虑横向载荷偏移对期望横摆角速度的影响,建立横摆状态和侧倾状态滑模面,设计了改进型滑模方法的动态滑模参数,并对控制系统进行Lyapunov稳定性分析。在Trucksim中采用Sine with Dwell转向输入进行验证,结果表明:结合模糊观测器的T-S方法能够准确模拟模型参数的非线性变化,动态滑模参数具有不同路面摩擦状态的自适应性,结合T-S模型的动态参数滑模方法能显著提高载货车辆极限状态下的稳定性,控制性能优于传统滑模方法。展开更多
基金Sponsored bythe National Innovation Basein Management on National Defense Science Technology National Economy Mobilization of the SecondPhase of"985"Project
文摘The causes and the problems of integration of scientific ＆ technical innovation （ISTI） and inevitability are proposed. The status of domestic scientific ＆ technical innovation is analysed. A series of emergent managerial problems caused by the system ISTI （SISTI） are pointed out. Because of Hall three dimensions structure＇s enlightenment, a three dimensional logical net diagram in which the system integration of innovation based on problem in real world but not on disciplinary logic is drawn. The intelligent group＇ s need span is greater under the conditions of relatively low material level than common groups who have lower degree of education. The SISTI is composed by multi-rule and intelligent multi-agent behavior. It is concluded that the logical relationships of integrated technology which based on the author＇s experience and observation must be considerded for a valid management of SISTI.
文摘The establishment and rapid rise of the European Union (EU) have increasingly made Europe an independent force. Objectively, the enlargement of both the EU and NATO has speeded up the process of European integration, and "One important link of Russia’s diplomacy
文摘The Owen’s T function is presented in four new ways, one of them as a series similar to the Euler’s arctangent series divided by 2π, which is its majorant series. All possibilities enable numerically stable and fast convergent computation of the bivariate normal integral with simple recursion. When tested computation on a random sample of one million parameter triplets with uniformly distributed components and using double precision arithmetic, the maximum absolute error was 3.45 × 10<sup>-</sup><sup>16</sup>. In additional testing, focusing on cases with correlation coefficients close to one in absolute value, when the computation may be very sensitive to small rounding errors, the accuracy was retained. In rare potentially critical cases, a simple adjustment to the computation procedure was performed—one potentially critical computation was replaced with two equivalent non-critical ones. All new series are suitable for vector and high-precision computation, assuming they are supplemented with appropriate efficient and accurate computation of the arctangent and standard normal cumulative distribution functions. They are implemented by the R package Phi2rho, available on CRAN. Its functions allow vector arguments and are ready to work with the Rmpfr package, which enables the use of arbitrary precision instead of double precision numbers. A special test with up to 1024-bit precision computation is also presented.
文摘为改善载货车辆极限状态的操纵稳定性和侧翻稳定性,在非线性工作域内进行主动横摆和侧倾力矩的改进型滑模控制,实现载货车辆横摆-侧倾运动的联合控制。利用扇形域建立非线性悬架和轮胎的T-S模型,结合模糊观测器获取悬架和轮胎动态模型参数。基于T-S方法的横摆-侧倾联合控制模型,考虑横向载荷偏移对期望横摆角速度的影响,建立横摆状态和侧倾状态滑模面,设计了改进型滑模方法的动态滑模参数,并对控制系统进行Lyapunov稳定性分析。在Trucksim中采用Sine with Dwell转向输入进行验证,结果表明:结合模糊观测器的T-S方法能够准确模拟模型参数的非线性变化,动态滑模参数具有不同路面摩擦状态的自适应性,结合T-S模型的动态参数滑模方法能显著提高载货车辆极限状态下的稳定性,控制性能优于传统滑模方法。
