Applied Mechanics and Materials Vols. 462-463

Abstract: This paper base on electromagnetism valve technology, the intake valves of a car driven by electromagnetic valve, by cooperating average torque of engine with prototype by 6000 RPM engine, then found that the average torque can be increased by 5.679% after changing the intake valves with electromagnetic valves. The increasing torque contributed to increasing the air intake in the opening stage and off stage improved, and provided a theoretical basis for the promotion of the electromagnetic variable valve in automotive.

Abstract: Relationship between information disclosure and the cost of equity capital for small and medium-sized enterprises was studied by calculating the cost of equity capital using the residual income model. A multiple regression model was built considering economic condition in China. It was found that earnings information may help the small and medium-sized enterprise to reduce the cost of equity capital. One important motivation was that significant positive correlation was seen between financial leverage and the small and medium-sized enterprises cost of equity capital. Besides, negative correlation was seen between enterprise scale and the small and medium-sized enterprises cost of equity capital.

Abstract: In different illumination, the same scene has different images. These images have different color. While adjust the image color, white balance is a very critical step. In the color adjustment, effective and automatic white balance algorithm can realize the intelligent adjustment of image color and save time. There are two kinds balance methods are Gray world method and Retinex theory. Two methods are commonly used. These have different treatment goals and have different characteristics. And their applications are relate to image attribute. Therefore, the two methods are combined and improve the white balance effect. In this paper, image was processed with gray world method firstly. Using the color constancy of Retinex, we maintain the green channel. We use nonlinear methods to adjust the pixel intensity. Through different parameters, we change the R, G, B channel value and realize the non linear adjustment of image intensity. The experimental results show that the proposed automatic white balance method can effectively avoid image distortion and keep the white balance is better.

Abstract: The purpose of this article is to empirically examine the influence of customer personality characteristics (need for social affiliation, customer relationship proneness) on relationship outcomes (customer trust, satisfaction, and loyalty). Online responses from service companies were gathered to assess the influence using Structural Equation Models (SEM). Results indicate that need for social affiliation is a strong determinant of customer relationship proneness and trust. Consumer relationship proneness has directly positive impact on trust and satisfaction. The results confirm the trust-satisfaction-loyalty paradigm in service context.

Abstract: This paper describes big data technology layers, analyses the CDR (Call Data Records) real-time query scenario of telecommunications and brings forward a fast indexing and query solution based on the open source Hadoop platform. A CDR real-time query system was built according to the solution. A performance test was conducted with the real dataset of a city with 3 million subscribers. Compared with the existing system, the big data solution can greatly improve data processing performance and support real-time query with lower hardware and software investment.

Abstract: The traditional mobile business value chain is based on linear thinking model mainly emphasizing technical guidance and enterprise sequence. Its characteristics constrain innovative thinking and innovative model of mobile commerce enterprises seriously. Under such a circumstance, the concept of value network was introduced into the mobile business field. By researching on documentation, the writer put in order relevant theories and models of mobile business value chain and value network, and further constructed mobile business value network model, which is formulated on the basis of value transmission perspective. The model enriched the prospective of research on mobile business value network, and provided scholars with theories for reference for further research.

Abstract: During the traditional collaborative filtering recommendation algorithm be impacted by itself data sparseness problem. It can not provide accurate recommendation result. In this paper, Using traditional collaborative filtering algorithm and the concept of similar level, take advantage of the idea of data populating to solve sparsity problem, then using the Weighted Slope One algorithm to recommend calculating. Experimental results show that the improved algorithm solved the problem of the recommendation results of low accuracy because of the sparse scoring matrix, and it improved the algorithm recommended results to a certain extent.

Abstract: Network-based recommendation algorithm presents a good recommended result in many aspects. The algorithm is also facing the problem of cold-start. This paper proposes a solution for cold-start problem which makes use of an algorithm based on items similarity to calculate the similarity between the new item and other items in the system, and then link the new item to the user-item matrix. Finally the new items can be recommended to users by the network-based recommendation algorithm what the traditional network-based recommendation algorithm can't do. Therefore, the problem is solved on certain degree.

Abstract: With the increasing development of e-commerce, the cybermediary faces serious challenges. As the significant event or state, growing potential opportunity restricts the development of the agency, so constructing suitable opportunity founding model has become an important problem facing to the decision maker. Based on fuzzy hypergraph theory, this paper studies on the model setting up process and model solving method in the growing potential opportunity discovery and introduces one simple application of the model with an information intermediary case.

Abstract: The author adopts Monte Carlo compute method to simulate the linear polymer chain lattice model in multiple chain systems of chain length n=20, 50, 100 while the volume fraction Φ=0.125, and makes a research on the variational situation of the solubility with changing of the interaction energy between solvent molecule and polymer chain segment molecule ε_PS. The results indicate, the solvent become not benefit to solve, the polymer chain turn into the ruleless coil shape, and the polymer groups overlap across with the increase of the interaction energy ε_PS.