The paper discusses the relationship between weights and control vertices of two rational NURBS curves of degree two or three with all weights larger than zero when they represent the same curve parametrically and geo...The paper discusses the relationship between weights and control vertices of two rational NURBS curves of degree two or three with all weights larger than zero when they represent the same curve parametrically and geometrically, and gives sufficient and necessary conditions for coincidence of two rational NURBS curves in non-degeneracy case.展开更多
A new method on the interval stability of networked control systems （NCSs） with random delay and data packet dropout is studied. Combining interval systems and NCSs, a graphic condition on judging interval stability...A new method on the interval stability of networked control systems （NCSs） with random delay and data packet dropout is studied. Combining interval systems and NCSs, a graphic condition on judging interval stability is presented in terms of the weighted diagraph theory in graph theory. Furthermore, utilizing the graph-theoretic algorithm, the delay-depended controller gains are obtained. Aiming at the same delay and data packed dropout, several controller gains are obtained, simultaneously. The example and simulation illustrate the effectiveness of the proposed method.展开更多
主要从图的角度研究了布尔控制网络(Boolean Control Network,BCN)可重构的条件。首先,从状态可区分的角度给出了BCN可重构的定义,为后续从状态转移图的角度来研究可重构问题奠定了基础。其次,给出了BCN中完美顶点划分的概念及其相关推...主要从图的角度研究了布尔控制网络(Boolean Control Network,BCN)可重构的条件。首先,从状态可区分的角度给出了BCN可重构的定义,为后续从状态转移图的角度来研究可重构问题奠定了基础。其次,给出了BCN中完美顶点划分的概念及其相关推论。随后,提出了可重构的一些充分和必要的条件。其中一个结果表明,当处理大型逻辑网络系统时,只需要考虑更少的节点来避免维数诅咒。最后,通过一个具体的生物学实例和一个具体的例子说明所得到的结果。展开更多
文摘The paper discusses the relationship between weights and control vertices of two rational NURBS curves of degree two or three with all weights larger than zero when they represent the same curve parametrically and geometrically, and gives sufficient and necessary conditions for coincidence of two rational NURBS curves in non-degeneracy case.
基金partially supported by the National Natural Science Foundation of China (60574011).
文摘A new method on the interval stability of networked control systems （NCSs） with random delay and data packet dropout is studied. Combining interval systems and NCSs, a graphic condition on judging interval stability is presented in terms of the weighted diagraph theory in graph theory. Furthermore, utilizing the graph-theoretic algorithm, the delay-depended controller gains are obtained. Aiming at the same delay and data packed dropout, several controller gains are obtained, simultaneously. The example and simulation illustrate the effectiveness of the proposed method.
文摘主要从图的角度研究了布尔控制网络(Boolean Control Network,BCN)可重构的条件。首先,从状态可区分的角度给出了BCN可重构的定义,为后续从状态转移图的角度来研究可重构问题奠定了基础。其次,给出了BCN中完美顶点划分的概念及其相关推论。随后,提出了可重构的一些充分和必要的条件。其中一个结果表明,当处理大型逻辑网络系统时,只需要考虑更少的节点来避免维数诅咒。最后,通过一个具体的生物学实例和一个具体的例子说明所得到的结果。
