Advanced Materials Research Vols. 225-226

Abstract: Rapid development of communication technologies has brought revolutionary changes to language teaching and learning. The use of computer technology has become an integral aspect of language learning. A diverse array of technologies, such as online learning platform, CD-ROMs, Multimedia Network Courseware, write site and videoconferencing etc. have been used to enhance distance language teaching, but they don’t provide opportunities for oral output since most of the communication tools are text-based. This poses great impediment to language learning, so, this research strongly recommends that voice interactive technology, such as Wimba Voice, should be applied to distance language teaching especially in Radio & TV Universities—China’s largest provider of open and distance education.

Abstract: This paper measured level of corporate over-investment with DEA method. In this paper, the empirical research tested the excessive levels of investment in listed companies. Studies have been shown by investment-cash flow sensitivity and growth function in metrics when excessive levels of investment in listed companies in China. Tobin Q values are not objective enough in China's capital market, while DEA method can be more scientific measure of Chinese listed companies for the level of over-investment.

Abstract: Transport Terminals are core facilities of urban transportation system, and the joint of different transportation in urban transportation network. Because of their functions and place, they are faced with huge traffic pressure. So the research about the characteristics of resident travel in transport terminals could provide theoretical support for urban transportation planning, organizing and managing, finally improve urban transportation satisfaction among residents. Against this background, Xizhimen as the research object is a representative transport terminal in Beijing. Based on large-scale investigation, on one hand, the characteristics of residents travel behavior are analyzed qualitatively; on the other hand, by building the Disaggregate Model, analyze the utility functions of different travel modes quantitatively, to find some controllable factors to optimize transport terminal and improve their satisfaction.

Abstract: In order to design a management information system to satisfy the demand for the seedling production in China, this article takes the grafted seedling production as an example to analyze the management process (inventory management, production planning, quality control, and so on) in a seedling enterprise. The ERP (enterprise resource planning) management method is applied to design the system. In order to achieve the information management and provide decision support for the overall management, expert knowledge in the form of database and models is used as a key solution to uncertainties that affect the agricultural production. The browser/server architecture (B/S) is adopted to design the system for a flexible deployment and a low total cost of ownership (TCO). The result shows that the system is steady and effective to manage information during the seedling production, and could be a tool for data processing and information management. The research and analysis of the seeding production management system based on ERP provide theoretical basis for the standard business process of agricultural enterprises.

Abstract: For the classic three-node multiple-input multiple-output (MIMO) relay channel, a capacity enhanced transmission is proposed, using simple half-duplex tow-hop relaying based on symbol level decode-and-forward (DF) mode. For higher capacity to the destination, we assume the source node equipped with more antennas and propose the transmission strategy, where using channel precoding, the source transmits the data to the relay and destination respectively in the first hop and retransmits part of data to destination jointly with relay in the second hop. Additionally, the power allocation is designed to maximize the system capacity. Simulation results are then presented for illustration of the capacity enhancement.

Abstract: Cluster supply chain network as a new organizational system, which co-opetition is different from general enterprises and single supply chains because of their determined structural features and operational characteristics. There are single-chain co-opetition and cross-links dynamics co-opetition in cluster supply chain network organization. It analyzes cross-links non-cooperative game and cooperative game of two third-order supply chains through the expansion research of Cournot game. The results indicate that supply chain cooperative game is the best option for supply chain win-win.

Abstract: In order to make optical flow methods suitable for real-time applications, this paper presents a rapid optical flow computation method based on multigrid. Multigrid computation method is well known for being the fastest numerical method when solving elliptic boundary-value problems, so we integrate multigrid into Horn-Schunck algorithm in order to obtain rapid computation. Firstly, we analyze the convergence process of traditional methods for optical flow computation; secondly, we combine the multigrid method with Horn-Schunck method, and in this way optical flow can be calculated efficiently; finally, the experiments show that our rapid optical flow computation method is efficient for target detection and video tracking systems.

Abstract: Thanks to multi-stage full-wave or bridge rectifier energy conversion method is commonly used in electric locomotive, the resulting harmonic, reactive power and negative sequence and other hazards not only endanger the public power grid and other users, but also endanger electrified railway own safe and reliable operation. In this paper, the current electrified railway power quality control methods and means adopted are analyzed in detail, and their advantages and disadvantages are pointed out. Aiming at power quality control situation of electrified railway, the power quality comprehensive control development tendencies of electrified railway are proposed.

Abstract: The capability of matching the schemas of the databases has led to its wide use in e-commerce, data integration, and data warehousing. In this paper we develop a holistic schema matcher, which provides a match between two schemas by combining the match results from the element-level techniques as well as instance-level techniques. The experimental results demonstrate good performance of the proposed matcher.

Abstract: This paper partitioned five major coal mining areas respectively in central, southern and eastern Jilin Province for case study based on current situation of exploitation and distribution of coal resources through artificial neural network(ANN) and the 3S technology to gain soil erosion loss mass. On the basis of RUSLE equation, BP neural network is fused to gain the rainfall erosion index of higher precision than those of traditional method. By extracting of indices and raster calculation on the platform of ERDAS and ArcGIS software, we made predication of soil erosion loss of the coal mining areas. After verification, the precision of rainfall erosion index is high, and thus improved the predicting accuracy of soil erosion. Comparative analysis shows that the soil erosion in central section of Jilin Province has much lower intensity, and high degree erosion occurred in the east and south mostly.