摘要：In order to investigate the problem of quadratic stability of switched linear systems via cascading, all the real invariant subspaces of a given linear system were investigated, and the result was used to provide comparable cascading form of switching models. Using the common cascading form, a common quadratic Lyapunov function (CQLF) can be found by the set of CQLF of diagonal blocks.
摘要：由于传感器节点能量受限,定位算法需要综合考虑定位误差、通信和计算开销等多方面的因素。分析了DV-Hop算法定位过程并总结出误差产生的主要原因,针对不同位置锚节点对定位误差的影响,提出了一种基于最优锚节点的定位算法—DV-Hop_Bon(DV-Hopbased on optimal nodes),最后使用Matlab进行了仿真实验,结果表明:新提出的定位算法在拥有较小通信半径情况下,能有效提高定位精度,并可广泛应用于无线传感器网络中。
摘要：A fractional-integral multiple ordering method was proposed to improve the integral multiple ordering method in material procurements. To illustrate the improvement effect, a new model considering a fractional-integral multiple ordering method was presented to extend the model proposed by Woo, Hsu, and Wu (2001), and a genetic algorithm was developed to resolve the modified model. Finally a numerical study based on the example used by Woo, Hsu, and Wu was presented to illustrate that the proposed model provided a lower or equal joint total relevant cost compared with Woo, Hsu, and Wu’s model.
