Analysis of computer virus propagation behaviors over complex networks: a case study of Oregon routing network

Nonlinear Dynamics - This paper mainly aims to explore the propagation behaviors of computer virus over complex networks under the combined effects of network topology and removable storage media....     

One-step nanocasting synthesis of highly ordered single crystalline indium oxide nanowire arrays from mesostructured frameworks

A one-step nanocasting route has been demonstrated to prepare highly ordered single-crystal indium oxide nanowire (IONW) arrays with mesostructured frameworks. Unlike the reported multistep nanocasting process (synthesis of mesoporous materials, and then incorporation of precursors and formation of inorganic frameworks), a highly ordered mesostructured surfactant-silica monolith with low external surface serves as both the template and the reducing agent and makes the formation of single-crystal IONWs in its channels easily in one step by using normal In(NO(3))(3) as an inorganic precursor. After silica is removed, highly ordered uniform single-crystal IONW arrays with hexagonal (p6mm) or cubic (Ia3d) mesostructures are derived. These new materials are studied by XRD, SEM, TEM, N(2) adsoption, and UV spectrum. Furthermore, this one-step nanocasting synthesis route is a generalized method and can be used to synthesized a highly ordered mesoporous silica monolith with metal oxide nanocrystals in its channels. To the best of our knowledge, this is the first report of a single crystalline mesostructured In(2)O(3) framework.     

Protein-assisted synthesis of single-crystal nanowires of bismuth compounds

Lysozyme, a protein, has been found to be a new morphology-directing agent and a simple and mild bio-molecule assisted method has been proposed for the synthesis of single-crystal bismuth sulfide and oxide nanowires.     

某些线性积分微分方程

本文讨论[1]中处理粘弹性杆非线性固有值问题时遇到的一些线性积分微分方程。它们在已有的文献中似不曾系统地被研究过。也缺乏这里的一般性。     

利用外源驱动介观RLC电路来制备压缩态光场

通过严格求解具有SU(1,1)H(3)代数结构的含源介观RLC电路系统,我们证明在外源驱动下的介观RLC电路可得到具有明显量子压缩特性的光辐射.     

Growth evolution of thin films from vapor: The role of small mobility clusters at the nucleation stage

A simple equation is introduced to reveal the kinetics for nucleation and growth of thin films from the vapor involving small mobility clusters. Applying the simple equation into the growth of diamond films, a quantitative evolution for the nucleation density was obtained. All the calculated results are agreement with experimental data. The results may provide a route for controlling the nucleation and growth by proper adjustment of the growth conditions in growth of thin films with small mobility clusters.     

A Diversity Model Based on Dimension Entropy and Its Application to Swarm Intelligence Algorithm

The swarm intelligence algorithm has become an important method to solve optimization problems because of its excellent self-organization, self-adaptation, and self-learning characteristics. However, when a traditional swarm intelligence algorithm faces high and complex multi-peak problems, population diversity is quickly lost, which leads to the premature convergence of the algorithm. In order to solve this problem, dimension entropy is proposed as a measure of population diversity, and a diversity control mechanism is proposed to guide the updating of the swarm intelligence algorithm. It maintains the diversity of the algorithm in the early stage and ensures the convergence of the algorithm in the later stage. Experimental results show that the performance of the improved algorithm is better than that of the original algorithm.