Key Engineering Materials Vols. 467-469

Abstract: Applying D&M IS success model, the study integrates three web quality factors (web quality: system quality, information quality, and service quality) and online trust to explore the IS success model of health websites. A survey of 1076 users of five teaching hospitals’ websites was conducted to validate the proposed model. According to the statistical results, the proposed model fits very well for the samples. The findings also show that three web quality factors have all significantly positive effect on web usage and web satisfaction. In addition, this study also confirms that online trust is important antecedent of web outcomes. System quality, Information quality, service quality and online trust jointly have significantly positive effect on web usage and web satisfaction. This study emphasizes the importance of both technological and social psychological factors in the progress towards success health websites. By integrating online trust into the success model of health websites, the proposed model extends beyond traditional technology-based view of web systems, and can provide academics and practitioners with better assessment of web success.

Abstract: To speed up grid resources’ clustering, this paper presents a grid resource fuzzy clustering model based on mobile agent. A fuzzy clustering task is decomposed into some parallel subtasks which then are distributed to some grid nodes for parallel processing by using mobile agents through B-shift algorithm so as to improve clustering efficiency. This paper implements grid resources’ fuzzy clustering based on mobile agent with Aglet platform, and evaluates the performances through simulation experiments. The experiments show that the clustering time of this method is shorter than that of center fuzzy clustering method.

Abstract: This paper presents a single-domain boundary element method (BEM) for linear elastic fracture mechanics analysis in the two-dimensional anisotropic bi-materials. In this formulation, the displacement integral equation is applied on the outer boundary only, and the traction integral equation is applied on one side of the crack surface only. A special interfacial crack-tip element was introduced to capture exactly the oscillatory behavior. The computer program with the FORTRAN code has been developed to effectively calculate the stress intensity factors (SIFs) of an interfacial crack within anisotropic bi-materials. This BEM program has been verified having a good accuracy with the previous researches. Furthermore, by analyzing the different anisotropic degree of interfacial crack in an infinite domain, we found that the stress intensity factors of interfacial crack tips had apparent influence by the geometry forms of cracks and media with different anisotropic degrees.

Abstract: In order to test the Correctness of output characteristics in different parts in the designing process of AC servo system and provide it with necessary design parameters, the speed of PMSM control system and a electric double closed loop simulation model of the vector control PMSM are established on basis of AC by using Simulink toolbox in Matlab. Moreover, MATLAB simulation is also conducted and on this basis come up with the design project using infineon XC878 chip to realize the PMSM vector control system. The system testing results show that it has the characteristics of quick start and response and high precision．A feasibility proposal is provided by the system to the research and development of PMSM vector control system based on MCU.

Abstract: With the growing number of aging population and chronic illnesses, how to help elderly residents access the health care service timely is a challenge for health care institutions in Taiwan. Recent advances in information, communication and biomedical technologies have combined to allow the development of various types of telemedicine technology designed to enhance or expand the health care services of elderly residents. However, most telecare studies focused only on medical care or development of technology rather than on comprehensive evaluation of residents’ (or patients’) perception about service processes. The purpose of this study was to explore rural residents’ perceptions and usage intention of a telecare system after they have used it. Results from this exploratory study showed that most elderly people have never heard or touched telecare systems before the study was conducted. However, the general perceptions of such systems included improvement of interacting with medical staffs, safety protection, convenient care, and one needed item of services in daily life. Especially, the mostly risk perception was privacy risk, that is, data confidentiality and individual privacy. Generally, most elderly residents evaluated their telecare experiences and perceptions as being positive. Besides, most elderly resident were willing to use the telecare system without fees. However, they felt risky about confidentiality and privacy toward this technology. To improve trustworthy perception of this novel technology, telecare providers should implement appropriate safeguards to protect patient health information exchanged in a telecare setting. Also, the physicians/nurses should take the time to communicate with the residents, especially in the form of education, about the benefits of technology. To optimize the effectiveness of this promising technique, more research on the relationship between residents’ (or patients’) perceptions and influences of technology will need to be conducted continually in future.

Abstract: Taking the full-vehicle eight-freedom dynamic model of a type of bus as the simulation object , a new optimal control method is introduced. This method is based on the genetic algorithm, and the full-vehicle optimal control model is built in the MatLab. The weight matrix of the optimal control is optimized through the genetic algorithm; then the outcome is compared with the artificially-set optimal control simulation, which shows that the genetic-algorithm based optimal control presents better performance, thereby creating a smoother ride and improving the steering stability of the vehicle.

Abstract: A method of vehicle interior noise order analysis was presented to resolve the loud noise problem in a new indigenous vehicle. Sound and vibration properties of the vehicle were tested. The interior noise and vibration acceleration signals at different positions were obtained, and the major sources of noise and vibration were identified. Base on these results, modifications were proposed for different noise sources. The results provide a reference for the optimal design of vehicle motor and transmission system and the internal noise control.

Abstract: The well-posed problem for the fully nonlinear Aceive diffusion and dispersion equation on the domain [0, 1] is investigated by using boundary control. The existence and uniqueness of the solutions with the help of the Banach fixed point theorem and the theory of operator semigroups are verified. By using some inequalities and integration by parts, the exponential stability of the fully nonlinear Aceive diffusion and dispersion equation with the designed boundary feedback is also proved.

Abstract: Modified bamboo-charcoal (MBC) was prepared by Ferric sulfate dipping and microwave radiation with 20～30 mesh bamboo-charcoal (BC) pretreated by water boiling as the support. The original and modified BC were characterized by SEM, FTIR, XRD, BET and BJH. Fluoride removal from simulated drinking water containing fluoride was probed into with MBC. The results indicated that MBC took on minor average pore diameter (1.172nm), major microspores and greater specific surface area (99.891 m2/g). Loaded iron combined with BC by bonds from BC such as H-O-H bond, C-O bond and O-H bond. The increase of fluoride removal after BC being modified suggests that MBC is a more potential defluorinate agent.

Abstract: An evaluation method of three edges isometric polygonal cylinder errors was proposed, and its minimum area model was built in the condition which there was no unity and maturity criteria and method for evaluating the isometric polygonal cylinder errors. an engineer experiment was done. The results indicated that the method and model can be used to evaluate three edges isometric polygonal cylinder errors. These works were done has certain practical value for promoting the practical application of isometric polygonal cylinder in engineer.