Advanced Materials Research Vols. 468-471

Abstract: According to the water quality monitoring data for Bashang section of Huangbizhuang reservoir conveying water for South-North Water Transfer Project from 2006 to 2009, individual evaluation, quarterly evaluation and overall merit were employed for water environmental quality evaluation with visualize classification on the ground of water quality standard classification, the results indicated most of individual evaluation indexes were within class Ⅰ or Ⅱand the indexes of quarterly evaluation and overall merit were with class Ⅰ which the third quarterly evaluation index was higher than that of the other three quarters, thus overall water quality was good enough for satisfying water quality

Abstract: The index system of urban ecological safety evaluation includes 26 indicators. The method system of urban ecological safety evaluation include data processing, key elements definition, the calculation of urban ecological safety level and standard formulation of urban ecological safety evaluation. The paper takes city Harbin for example and makes the empirical research.

Abstract: A hypothesized model of the influence order and interrelation about three main measure factors (communication, trust and relationship commitment) on long term relationship-oriented was established from the formation of supply chain cooperative relationship. Structural equation model was used to verify the model. And relationship commitment was measured from three dimensions of income commitment, affective commitment and witching cost. With the questionnaire survey of supply, manufacture, distribution and retail companies, the empirical results show that during the formation process of supply chain cooperative relationships, cooperative enterprises start from communication, and then create the mutual trust, thus develop long term relationship by enterprises commitment. Communication and relationship commitment have a direct impact of long term relationship-oriented, while trust has an indirect effect on long term relationship-oriented. Trust has a significant effect on witching cost in relationship commitment, while witching cost has a significant effect on long term relationship-oriented.

Abstract: Research on economic growth in the past concerns only with physical capital and human capital in the absolute amount of effects at the expense of the efficiency of the present situation, we use the 1981-2008 China's annual time-series data, with uniform measurement to build econometric models to study China's economic growth in the efficiency of physical capital and human capital. Our research results indicate that in the long term, human capital is of much higher output efficiency than physical capital; In the short term, increased input ratio of human capital causes average labour output to grow sustainably, and increased input ratio of physical capital only between the 1th and 2nd period dues to rapid increase in average labour output and then declined rapidly.

Abstract: In this paper，it is analyzed the problem in building the complex virtual scene modeling. A model reuse method is proposed to construct the complex model. And to use the model reuse method achieves to build a complex building in a virtual scene.

Abstract: In this paper, refractory castables was used for the simulated erosion experiment of RH snorkel in the laboratory, then these data which were got from experiment were analyzed by using spss software, and two mathematical models at slag-gas interface and slag-steel interface of refractory castables were obtained, this models established two relations between slag compositions and erosion degree. Subsequently, the two models were analyzed detailedly, the results indicated two models were consistent with the corrosion of refractory castables . Therefore, the two mathematical models have a certain guidance to the practical production.

Abstract: SMS automatic alarm system monitors the operation parameters of the fan in real time mainly through PLC and sends the detected abnormal state before the accident to the PLC. SMS Monitor module receives the results of PLC treatment. Once the PLC sends alarm signal to start the SMS Monitor module and sends a warning message to the default person, the real-time dynamic can be inquired and disposed remotely through the interactive function of the module. This system builds distributed PLC control system on GSM business communications platform of China Mobile and China Unicom. The realization of PLC wireless data transmission has advantages such as utilizing existing networks, shortening the construction period, lowering construction costs. The easy installation and the simple maintenance of the equipment have great practical significance.

Abstract: Car-following is a radical traffic Car-following theory. Driving behavior and vehicles’ driving characteristic is very important in making intelligent traffic system. This paper investigates the headways of multi-lane, finds that there existed small headway in multi-lane highway in city Changchun, and its percentage can not be negligible, analyses several reasons of changing lanes in the car-following and the headway distributions with the abnormal behavior. Finally the theory small headway is generated by influence of traffic flow and the ratio of the left and right turning is concluded.

Abstract: Polycyclic aromatic hydrocarbons are harmful to human body and environment. In order to know the formatting rules of benzene and polycyclic aromatic hydrocarbons in gasoline combustion process, a series of tests are done in a constant volume combustion bomb. The emissions of benzene and polycyclic aromatic hydrocarbons are measured by a gas chromatography-mass spectrometry analyzer. The test results show that the benzene in combustion products comes from the incomplete combustion fuel. The free radicals out of cracking fuel may also become benzene in combustion process. Adding ethanol in fuels does not necessarily increase the emission of benzene. Formation of polycyclic aromatic hydrocarbons varies with temperature.

Abstract: In order to evaluate the speaker's pronunciation quality, a speech evaluation system based on MFCC is designed by using some techniques including pre-processing, feature extraction and pattern matching and so on. The MFCC parameters of the standard speech and those of the original speech are extracted. The result is given by the mechanism. Experimental results show that the scores assessed by the system is relating to people’s subjective feeling closely. The software is developed by VC++ and runs on windows XP.