Advanced Materials Research Vols. 204-210

Abstract: In western countries, “Business Platform” is considered the most successful model to operate audio-book market. We provide an enhanced business model that introducing watermark for copyright protection enhancement. The enhanced model will both increase the profit of audio-book industry and give an impulse to industrial expansion even it has some disadvantages as well.

Abstract: A new bamboo weaving machine, in which automatic control system is employed, is introduced in this paper. The system deals with the images firstly, and then controls bamboo weaving by means of electromotor and transmission devices. Different algorithms, such as lift wavelet, bivariate rational interpolation and Ostu are used in image processing. The minimum width of the bamboo filament is 0.7mm. The maximum number of the bamboo filament in the warp and weft direction is 360 and 430 respectively. Various beautiful bamboo artware can be weaved automatically by this machine in a short time.

Abstract: In order to improve the efficiency of service discovery for mobile application, we present a new method of service discovery. Reference the ring topology of chord algorithm and the algorithm used by DHT, the traditional single finger table maintained by each node in the ring will be changed into double finger table: the Neighbor Finger Table (NFT) and Long-distance Finger Table (LFT). The LFT can construct small-world network. The new method is different from that, which is by the calculation of the local node, ensure the scope of service can cover the entire network. The simulation shows that the algorithm can effectively reduce the path length of service discovery, improve the service success rate, and control the path length.

Abstract: A new method of machine learning based on examples is given in this paper. This method improves the classical method ID3 which learns from static examples. Its limits lie on no comprehension and no memory, and no dynamic correlation. In the new method, it can learn from dynamic examples, the change of data can be learned because the training data is the initial and end process in the interval. All varieties and correlation can be understood and remembered. By experiments, the method can be used as classifier and it has special use in the field of information mining.

Abstract: online shopping is becoming more and more common in our daily lives. There are many studies in this field, in which perceived risk is proved to be a very important factor when people considering online business. But the relationship between perceived risk and consumer decision making style has not been studied yet. We use SEM to find out the link between perceived risk and consumer decision making style. As a result, we found fashion and brand style can reduce perceived risk, on the other hand perfect and customary style can increase perceived risk.

Abstract: In this paper, electro-thermal-mechanical theoretical analysis of micro-hotplate-based micro gas pressure sensor is carried out, which is on basis of the classical heat transfer theory and rarefied gas dynamics. Combined with micro-hotplate (MHP) theory analysis of heat transfer and thermal-mechanical finite element modeling, electro-thermal-mechanical coupled analysis of theoretical models with regard to the MHP-based micro gas pressure sensor is built. Then, through the ANSYS-one of the finite element analysis software-the simulation analysis of MHP went well. The simulation results show that MHP generates a smaller deformation because of adding the thermal conductivity, and MHP provides a more feasible analysis method in the theoretical study of micro hotplate.

Abstract: The theory of system core is given a method to determine key elements of the system based on graph theory, but it is difficult to apply in practice for the question of how to change a system to a graph and multi-core in a system, this paper give a method to change a system to a graph based on correlation analysis, and give a modle to select system core based on cluster analysis, More, in the case of the real estate system of Wuhan, a diffusion index curve is given based on the elements of system core selected by the model, the result illustrates that Wuhan real estate arises in 1991 and to its peak in 1993, and then declines to the bottom in 1996; next, it fluctuates in a small range and becomes smooth since 1999, but a slight upward trend during 2000, this conclusion is consistent with the actual development status of the real estate in Wuhan and prove the validity of the model.

Abstract: This paper researched the forming theory of the cutting tools with helical teeth and complex surfaces. Deduced the nonlinear equations of the movement of NC system to generate such tools, presented the way to find the solution of the equations, calculate the cross section graphics of the teeth profile and made computer simulation for NC machining. In the former research, the position of the work, the point to be machined, and the position of the grinder are undetermined. They must be solved out by a group of mathematical equations, so that the method can be called as analytical method. In this paper, the position of the work, the point to be machined on the work, are deliberately determined before hand, while the position of the grinder is determined by solving a group of mathematical equations. Because of these, this method can be called as the half analytical method, or the half-forming method. The cutting edge A is deliberately turned to special position, some kind like the forming method, while contact point on the cutting edge B is determined by the contact condition, so that this method can be also called as half- forming method. The concept of this method is very clear, the mathematical form is very simple, and the calculation is very easy.

Abstract: This paper find a new expression to the mining of the flexion circle, presented a new method which combined the analysis method and the graphic method together, to draw the flexion circle. The paper found the relationship between the accelerate center and the flexion circle. Based on these achievements, this paper presented a new method to find the curvature of the profile of the conjugating gearing.

Abstract: The excitation control system of variable speed constantfrequency(VSCF)doubly-fed induction generator(DFIG)for wind turbine was developed，the excitation controller was achieved using fuzzy-PID control. Based on these，the variable-speed constant-frequency DFIG running in the whole working wind speed range is studied by simulations．Fast response, small overshoot, high precision, strong adaptability and highly robustness are obtained by the proposed strategy．