Advanced Materials Research Vols. 433-440

Abstract: This paper describes the latest research progress of the hydrodynamic characteristics of structures exerted by internal waves in a continuously stratified fluid. In particular, the research of internal waves in the two-layer fluid has done a detailed description.

Abstract: We investigate the expected discounted penalty function in which the discount interest process is driven by markov process. We obtain the integro-differential equation satisfied by the expected discounted penalty function when interest process is perturbed by standard Wiener process and Poisson-Geometric process. A system of Laplace transforms of the expected discounted penalty function, given the initial environment state, is established from a system of integro-differential equations. One example is given with claim sizes that have exponential distributions.

Abstract: Based on the best producting plan for multi-objective question, making the simulation model by increasing anti-disruption factors,or increasing the cost and the budget through undertaking the research on the inner system and the outer system's disruption .At the same time drawing the most close scheme by using the classical genetic algorithm for multiple-objective problem. The experiment shows that the system of internal and external factors causing the very different results to the allocation, but increasing the allocation costs and the opportunity costs is necessary in the actual operation.

Abstract: Through the in-depth study of the MPEG-4 face model definition standard and animation-driven principles, learning from the existing generation technology of facial animation, this paper presents a 3D facial animation system design program. This program can accept driver information to generate a realistic facial expression animation and simulate the real face actions. At the same time, in the implementation process it also uses FAP frame with a mask and implementation method of FAP intermediate frame calculation, insert to reduce the amount of animation-driven data, and then improve the continuous effect of facial animation.

Abstract: This study aims to analyze the relevant mechanical properties of woodball shafts by applying numerical methods. The structures of woodball were constructed in Solidworks 2007 to form the solid models, and the numerical model was analyzed in ABAQUS to acquire the simulation resluts. The collision speed between ball and mallet was from the experiment of motion analysis. As the maximal stress of mallet was concentrated in the proximal part of bottle, some enforcement design could be carried out in this part to reduce the fracture incidence. Another important finding is the contact area at the mallet head was really small, the rubber cover at head part may thicken at the centre part and thinner at the outside area. For further study, it is important to represent the higher fidelity of the input conditions for the finite element analysis (FEA).

Abstract: With the wide applications of machine learning techniques in spam filtering, malicious adversaries have been increasingly launching attacks against the filtering systems. In this paper, we model the interaction between the data miner and the adversary as Stackelberg games. Though existing algorithms for Stackelberg games efficiently find optimal solutions, they critically assume the follower plays optimally and rationally. Unfortunately, in real-world applications, because of follower's bounded rationality and limited observation of the leader's strategy, it may deviate from their expected optimal response. Considering this crucial problem, this paper solve for the Nash equilibrium. Experiments on real spam dataset demonstrate that bounded rationality and limited observation can make Stackelberg games more practical and provide interesting insights about the interaction between the data miner and the spammer in spam filtering.

Abstract: The development of wireless networks brings people great convenience. More state-of-the-art communication protocols of wireless networks are getting mature. People attach more importance to the QoS provisioning in heterogeneous wireless networks. This study proposes a cross-layer-based mobility management Quality-of-Service (QoS) architecture that includesthe QoS manager、the cross-layer scheme and the access control algorithm.In order to provide the QoS support for mobile user, the overall architecture for QoS management is required in heterogeneous wireless environment, where various mobile users are connected to the different access network through the core network. The QoS manager is composed of ANQM (Access Network QoS Manger) and IANQM (Inter-Access Network QoS Manger) which are used to provide consistent QoS management over an integrated wireless access network environment. The access control algorithm is based on the QoS mapping mechanism between the access network and the core network.The simulation result shows that the QoS for mobile user is guaranteed more effectively and this mechanism provides an end-to-end QoS between different access networks.

Abstract: Supporting QoS is one of notable features in IEEE 802.16 networks. In this study, we used the queuing-theoretic approach to model the uplink air interface of IEEE 802.16 networks as M/D^b/1 queues. The justification for this modeling argument was given in the paper. The average queuing delay and system delay were derived with embedded Markov chain technique. We also pointed out that the created Markov chain exhibits geometric tail behavior so that the Markov chain can be solved more efficient. The analytical results were verified through computer simulations. The derived results would be supporting the design of packet scheduling or admission control.

Abstract: The high transmission rate for IEEE 802.16e (WiMAX) system can afford many kinds of high quality mobile services but also induces the higher power consumption. Therefore, the IEEE 802.16e specification proposes the power saving function for MSs. However, the actual implemented sleep duration for MS is fragmentary and short. In this paper, we have proposed a complete solution of the power saving function, which includes the Call Admission Control (CAC) algorithm, the Bandwidth Allocation (BWA) algorithm, and the packet scheduling algorithm to prolong the sleep duration of MS for UGS/ertPS, rtPS, nrtPS, and BE traffics. The simulation result reveals the efficiency of sleeping mode and the excellent performances in packet delay and dropping probability.

Abstract: Information theory has made great impact on the research of communication systems. However, analyze and design of networks has not benefited too much from information theory. Therefore, in this paper, we propose the information-theoretical framework of context aware network to explore the relationship between the information and the network performance. We also analyze the information traffic process in context aware network. To illustrate our approach, we analyze the architecture of context aware network by the information entropy produced in the network, and discuss the way to improve the performance of context aware in an information-theoretic perspective. The results in this paper may be also used to design other network and guide the future network design.