Applied Mechanics and Materials Vols. 325-326

Abstract: The EDA (Electronic Design Automation) technique which provides us an alternative method of circuit system based on the PC and information technology is a novel technique in modern electronic engineering field. Research on implementation of the DES (data encryption standard) has been paid much attention. In this paper, a description of the DES implementation on EDA box is presented in an alternative method which is suitable for EDA experimental teaching. The DES is set to different parts according to EDA experimental content. We introduce in detail the sub-circuits which consist of the circuits of the DES from simple units to large scale parts, which is easy for students or beginners to learn hardware implementation of cipher algorithm.

Abstract: A kind of adaptive subcarrier, bit and power allocation method utilizing Hopfield neural network (HNN) to minimize the overall transmit power of multiuser OFDM is studied in this paper. In order to find the power optimal subcarrier, bit and power allocation under the constraints that one subcarrier can only be allocated to one user and all users are allocated the same numbers of subcarrier, the number of bits of each subcarrier is finite, bit data can be allocated to each subcarrier, two kinds of new energy constrained functions are constructed for the HNN. It is shown through numerical simulations that the proposed methods can find the optimal allocation with less complexity compared with the exhaustive method.

Abstract: The artificial fish swarm algorithm is a new bionic optimization algorithm, which focuses on constructing an optimization model of autonomous animats. Researches on it have been applied in many fields. This paper makes an in-depth study of the artificial fish swarm algorithm model, and tries to optimize and expand it for the use of building a game dynamical system, so as to serve as a technical and theoretical reference in designing and applying the game engine of AI movement.

Abstract: The design of mechanism is used to calculate node reliability of incredible P2P network. The mechanism through matrix shows the trust relationship between nodes in the network, through matrix operation realizes the trust transfer process fast, and through a trusted server provides calculation service of trust degree for nodes in P2P network.

Abstract: In this paper, we propose a new hybrid algorithm based on artificial fish swarm algorithm and genetic algorithm to solve the capacitated vehicle routing problem (CVRP). The proposed algorithm is a swarm intelligence optimization algorithm based on the animal behavior. The experimental result show the effectiveness of this proposed method.

Abstract: BP neural network modeling is introduced using MATLAB neural network toolbox function, In order to find the non-linear mathematical model between data. And process parameters is optimized combination the neural network and genetic algorithm, The method has been applied to optimize parameters for nitric acid device, and proved to be highly importance, Programming with MATLAB is very brief and practicable to optimize parameters using neural network and genetic algorithm.

Abstract: Numerous part of the energy-aware resource provision research for cloud data center just considers how to maximize the resource utilization, i.e. minimize the required servers, without considering the overhead of a virtual machine (abbreviated as a VM) placement change. In this work, we propose a new method to minimize the energy consumption and VM placement change at the same time, moreover we also design a network-flow-theory based approximate algorithm to solve it. The simulation results show that, compared to existing work, the proposed method can slightly decrease the energy consumption but greatly decrease the number of VM placement change

Abstract: According to the process of drilling characteristics which include complexity and uncertainty, this paper will propose using the technology of neural network in order to making stuck drill accident prewarning, setting the model of sticking prewarning, finally shows that the accuracy of the models by field data. Choosing mean impact value (MIV) algorithm for the variables influence screening, then selecting variables which influences on the accident of stuck drill largely as the input of the network, collecting the data of drilling and building the sticking prewarning model, eventually the the accuracy of the models is proved.

Abstract: Along with the development of information technology, the Wireless Mesh Network gradually unfolded itself. This paper presents the development of Wireless Mesh Network, the existing research results and safety performance analysis.

Abstract: The P2P system was build with the topological structure of the network at the application layer, network topological structure for an P2P system has a very important significance. There is currently a wide range of different topology structure of P2P network, HCPON uses two-level clustering structure, based on HCPON, we propose an efficient overlay network model based on clustering (PONM), it solves the problem that the super node only uses a single backup node as a redundant backup leading system robustness improvement is limited in unstructured P2P system. The model through a directory server to manage all nodes on the network, The results of the simulation demonstrates that,compared with HCPON, PONM has a relatively stable path stretching rate and lower average link pressure, can meet the requirements of Large-Scale P2P streaming media service needs.