Applied Mechanics and Materials Vols. 58-60

Abstract: Service users in Service Oriented Architecture (SOA) need to choose provider from the candidates that respond their service requests in succession. For time-sensitive services, the user has to decide the optimal time to stop waiting for the next coming providers in order to shorten the total time. The Boundary Payoff Determination (BPD) approach is proposed in the paper to help the users to predict the payoff of each coming providers, and equips the users with practical conditions and steps to make proper decision. Simulation experiments show BPD superior to the existed methods and able to increase the QoS level of time-sensitive services in SOA.

Abstract: Based on the knowledge of the grid curves on the boundary curves, we propose a simple grid generation method by direct computing of grid curves. A kind of symmetric blend functions is given. The expressions of u-directional grid curves and v-directional grid curves with shape parameters are constructed. By choosing different shape parameters, different grid curves can be obtained. Some numerical experiments show that the presented method is effective.

Abstract: Yunji township of Jiangyou city is the particular characters of drought, poverty. The party committee and government try to find a getting wealth road with industry development goal "thousands acres of walnuts". The main contributions of this paper are: 1) Proposing improved PCA model to eliminate dimensional inconsistency and the difference of magnitude. 2) Adopting improved PCA model to analysis five fine walnut characters, and comparison with traditional PCA. 3) Getting the conclusion that Xiangling walnut is the most suitable for Yunji township cultivate.

Abstract: To expand user's actions of personalized recommendation, this paper introduces an Interest Feature Spatial based Recommendation Model. This model combines both collection behavior data of network users and content data of web pages located by URL address. The main content includes: (1) Proposing the construction of interest feature spatial based on SHG-Tree; (2) Proposing the formula to calculate interest feature values of network resources; (3) Proposing four interest match algorithms along with six types of personalized recommendation schemes. Experiments show that the recommendation service can achieve millisecond responding, the precision, especially recall metric is better than item-based collaborative filtering algorithm.

Abstract: The 6 different section shape of gas channel on the Gas-Assisted Injection Molding was researched, which is based on the same processing parameters and the same section area of gas channel.The MPI/3D GAS of Autodesk Moldflow 2010 software was used for numerical simulation.The study will provide the basis for design of gas channel selection in product.

Abstract: The paper provides a solution of tracking system on dual-DSP(ADSP-BF561, ADP-BF548), and gives the method of implementation and optimization. The system implements the complex tracking algorithm in real time on the high-performance dual-core ADSP -BF561. The multimedia processor ADSP-BF548，which has integrated a pixel composer and many interfaces internally, is used to control the entire operating of the system and complete the task of input and output flexibly. With the help of the code and decode chips ADV7181 and ADV7171, which have strong ability of adaption to varieties of video formats, the system has the features of easy- expansibility, strong adaption, stabilize, function, small size and low consumption.

Abstract: In this paper, we design a pre-coding method in cooperative multi-cell system, which is the singular value decomposition (SVD) processing followed by a power allocation scheme of minimizing the average BER of the system under a set of every base station (BS) transmit power constraints. This method further reduces the residual interference through power efficiently allocated among the data streams. Moreover, taking different channel state information (CSI) error variances among user equipments (UEs) into consideration, the proposed low-complexity pre-coding scheme is robust to imperfect CSI.

Abstract: In the architecture of wireless sensor network, routing technology at the network layer is essential. Since the clustering routing leads in good performance on data aggregation, energy minimization and so on, it has become the focus of the study routing. In this paper, a cluster-based routing tree construction algorithm for Wireless Sensor Networks is proposed. The detail of how to select the intermediate nodes to build the routing gathering tree is also described. The experiments show that the algorithm is effective to extend the network lifetime.

Abstract: This paper presents a control problem of a twin rotor MIMO system (TRMS) based on the system on programmable chip (SoPC). The control system utilizes the cerebellar model articulation controller (CMAC) as a compensator for PID control. The CMAC has fast learning capability that can provide real time compensation for PID controller. In the hardware implementation, HCTL-2016 is used to encode AB phase voltage into digital signals. Verilog HDL is utilized to encode program that can receive and trigger signals from HCTL-2016 on Altera Nios II FPGA. By coding the programmable chip control signal can be passed to the controller. The processed signal is converted by a D/A converter and is transferred into voltage. The command signal is then sent back to the TRMS to control its movement. Experimental results show that the hybrid CMAC-PID can control the TRMS to reach desired position and track specified trajectory efficiently.

Abstract: The way of Cathexis emotion model merging with personality is studied. The classic model is a model about mixed emotion synthesis, but personality isn’t included in the model. Personality and emotion space is described. The mapping between them is established via the PAD space, and the emotion model is proposed, which can accord with the human affection active role. The mapping between basic emotion and actions is also established to make new behaviors. So this theory lays a foundation for service robot working in public such as Terminal. The experiment results show that the model can remarkably reflect both the human emotion change process and how different personalities affect emotion. The interaction among emotions can also be shown by the experiment.