Advanced Materials Research Vols. 1079-1080

Abstract: Engine intake system is one of the important parts of the engine which affects the engine’s volume efficiency and the uniformity of air entering to each cylinder directly Wherein the intake manifold with variable length is the important part of the intake system , has great significance value to research. Due to the structure of the manifold is complex, considering the manifold structure which affects the simulation accuracy, the principle of reverse engineering was used in this paper. Firstly, the laser scanning technology was used to obtain the point cloud data of the intake manifold.And then the cloud data was dealed by software Geomagic Studio12、NX Imageware13.The software UG8.0 was used to reconstructure the 3d intake manifold with variable length model.

Abstract: In this paper, the design and construction of the acousto-optic double control automatic alarm and lighting circuit. Through analyzing the existing solutions, using an infrared tube, electret sensor as well as the main device, by 555 multivibrator principle of design and production. This system sound control circuit, control circuit and the infrared light control circuit, and the door alarm circuit, and has the function of alarm lighting using infrared good concealment, the alarm can be used in day and night, at the same time controlling light lamp has the effect of energy saving.

Abstract: This paper describes a kind of smart home control system. The system can intelligently adjust the indoor environment, according to the temperature and humidity, the light intensity, the combustible gas levels and other parameters. The smart home control system can intelligently control household appliances in order to achieve energy saving purpose. It uses embedded microprocessor as control unit,and uses RFID technology for household staff identity recognition. The smart home control system uses sensor system to get indoor environment parameters. Through the real-time measurement and control, it helps people to achieve comfortable, intelligent household environment.

Abstract: This paper can be used as acar key toothed recognition and detection technology and computer vision, imageprocessing technology combined with interdisciplinary applications. Car lockassembly complicated procedures, identification and car keys tooth detection isone of the key aspects of automotive lock assembly, lock a direct impact on theefficiency of the assembly process. The system can effectively improve theexisting car key tooth detection technology to reduce the cost of car keystooth detection recognition, while also rapid and accurate identification, sothat the entire lock assembly process much more efficient.

Abstract: With the development of social economy, has become more and more concern about the burglar. Iron bars can't bring too much sense of security, such as the societal demand for alarm equipment is becoming more and more urgent. Intelligent anti-theft system, is made for the purpose of safety technology to prevent system. He includes on modern physics and electronic technology in invasion into vandalism. Produce sound and light alarm effectively deter criminals and remind the personnel on duty to take appropriate preventive measures. This paper simply introduces the needs of the original design, and then focuses on the interior control system of intelligent anti-theft system circuit system..

Abstract: logistics management system is a new thing in China, the logistics cost accounting method can be also used some be inopportune or inappropriate, and therefore have a very negative impact on the operation of enterprises. The current or on the accrual basis of accounting, and have set up a special accounting system to the operation mechanism of logistics, lead to the definition of logistics cost according to the comprehensive accounting. The following describes the logistics cost accounting method of manufacturing enterprises, discusses the reasons for the logistics cost accounting, research on some problems in current logistics cost accounting, and gives specific suggestions for improvement.

Abstract: Engineeringcontract confirmed the project’global goals like cost、time、quality、safety and environment, clearly stipulated the rights and obligationsof the responsible party. So contract management wass the core of projectmanagement. A good contract credit had a positive effect on the contractmanagement. This article analyzed the LCM (Life-cycle management) of theconstruction project, and attempted toestablish a set of scientific、reasonable credit evaluation system. Based on the SEM (StructuralEquation Model) theory, this paperanalyzed and identified the structure of the contract credit and built the quantitativeevaluation model for the construction contract credit. Through the investigation of the empirical dataanalysis, the model’s fitting results shownthe more reliability and stability.

Abstract: Investment management is becoming increasingly popular among college students, college student has become a financial investment groups that cannot be ignored. This paper is divided into three parts, the first part focuses on the contemporary situation of college students' financial investment; the second part focuses on that based on the Logit model state the factors that affect College students' financial investment., the last part introduced that high institutions how to improve the students' financial investment capacity.

Abstract: Effect of BOT financing mode in the housing is more and more obvious in the diversifieddevelopment，how to evaluate the risk of this kind of mode is an issue. The article analysis the detailed of the various potential risks of BOT financing mode; the fault tree method into the risk assessment of public rental housing in the BOT project, to test the effectiveness of the final project risk evaluation.

Abstract: Construction of affordable housing is not possible, their development and the development of commodity housing market should adapt to achieve coordinated development. Based on previous studies, drawing on ideas put forward specific judgment of affordable housing and the coordinated development of commodity housing, that is, under the premise to meet the total demand, through reasonable adjustments to the proportion of affordable housing and the supply of commodity housing, thereby affecting the price of commodity housing, strikes a reasonable price earnings ratio. In this coordination criteria, the paper uses system dynamics theory constructed residential market system dynamics model, and in Xi'an City, for 2003 and 2020 in Xi'an residential market simulation, testing the validity of the model; Furthermore performed by adjusting the supply of affordable housing a large number of simulation experiments, and ultimately determining the affordable housing and the coordinated development of commodity housing supply ratio between the two is 21.88%: 78.12%, and accordingly proposed to promote the coordinated development of both policy recommendations.