Advanced Materials Research Vols. 268-270

Abstract: Based on the research results of light environment and thermal environment model and the principle of mass balance, the dynamic forecasting model of Humidity in Chinese solar greenhouse in the north drought cold area was established. The influenced factors correlative with water vapor change such as crop transpiration, soil evaporation, covered material condensation and natural or winded of closed situation ventilation were included in the model. To validate the correctness of the model, an experiment was carried out in the Chinese solar greenhouse in the Inner Mongolia agriculture science and technology park. The results showed that the inner relative humidity forecasted agreed well with the measured data in the north drought cold area in winter, and the relative error is less than 10%.

Abstract: In order to resolve the problems of low precision and bad real-time of traditional control methods of matching-material system, this paper has proposed the coordination control algorithm. This paper has designed a Glass matching-material system based on the Fuzzy-PID control by using of combining the traditional PID and the Fuzzy control algorithm. The system uses expert system and adjusts automatically the control parameters online learning to realize control of the best combination of precision and speed. The running result of the system has proved the feasibility and validity of the Fuzzy-PID coordination control.

Abstract: It is an inevitable trend of the development of lab management of local colleges and universities to innovate the management means or methods. By analyzing the existing problems of lab informatization management of local colleges and universities, this paper explores some ideas for realizing lab informatization management.

Abstract: Curriculum website is an effective form to realize educational informatization. How to design a good curriculum website This paper introduces its basic structure from the aspects of learning module, resource module, communication module and management module, as well as its teaching design from the aspects of teaching objective, design concept and method, the hierarchy of knowledge, learning evaluation, and also the technical design from the aspects of website navigation, website security, and website scalability.

Abstract: A moving mass control of rotating spacecraft is a kind of new control mode, it differs from other control modes because it generates an angle of attack and an angle of sideslip directly from the mass motion.The nonlinear equations of motion for rotating Maneuverable Spacecraft are derived. the variable structure attitude controller is presented according to the nonlinear equations, It’s based on two-timescale separation and with two loops, faster loop and slower loop respectively. Inertial uncertainties and aerodynamic moment uncertainties are considered simultaneously, In order to track the command signals perfectly, the sliding surface is of integral form, results of the simulation shows that this kind of attitude control system is potentially practical and robust in the presence of inertial uncertainties of guided missile and uncertainties of aerodynamic moments. Compared with the common attitude control system, it has the following advantages:(1) non linear model is directly controlled,(2)it has robust. Because the non-linear factor is considered, it has the practical use for the engineering field.

Abstract: To improve the efficiency and accuracy of work measurement of IE, system using VBA language as well as Windows API function is developed on Excel platform. It can record data, eliminate abnormal value, determine measurement times, and calculate measurement periods automatically. And like record, calculation and analysis, these primitive handworks are replaced by work measurement system now. To compare data between measurements on spot and handworks, work measurement problem is solved efficiently and accurately at last.

Abstract: In order to assess the cities' human settlement, this paper proposes a new method according to the elements of niche suitability by the following: (1) the author selects meticulously 25 leading indicators what can reflect the best coupling between the reality niche and the best approximate niche; (2) the author sets up a new quantitative model of multiplies indices using niche suitability on assessing the cities' human settlements. By the way, the indices those the author uses to set up the model are form the economical, social and environmental niche respectively. The new method and the model are used to assessing the Heng Yang City of Hu Nan Province in China in order to take an example for its effect. With the help of the SuperMap-GIS software in his experiment, the author acquires a thematic map of Heng Yang Cities' human settlement, the results of this experiment display that this method and its model are very practicable for assessing a cities' inner human settlement. By the results of this paper, the author expresses his viewpoints for promotion the cities' human settlement that this paper does a research.

Abstract: Southern Anhui contains many Huizhou cultural elements. The designer is difficult to capture the required core elements because Huizhou cultural elements are many and complex. In the paper, Huizhou cultural elements are studied from the perspective of semitics, at the same time, Huizhou cultural elements are classified according to the element symbols. This will make for the designers to select directively the design elements. This saves time and can quickly get to the point for the designers.

Abstract: Flow regime recognition of two-phase flow is of great importance in industrial process. This paper describes the role of the field-programmable gate array (FPGA) hardware, in the implementation of electrical resistance tomography (ERT), which is used to analyze gas/liquid two phase flows. Firstly, a brief introduction and some theoretical analysis are made about the basic principles of Direct Digital Synthesizer (DDS). Then a signal source for ERT system based on DDS and FPGA is designed and a kind of compression ROM is realized. The whole system has been simulated in the Quartus II 7.2 simulation environment and successfully downloaded to the chip of the Cyclone II EP2C5F256C6. The operating results and the theoretical results show that the proposed method can greatly improve the developing efficiency, save plenty of the system resources and improve the reliability and flexibility.

Abstract: It has been the academic researching subject how to objectively compare the various face identification algorithms. This paper design a system based on the Colorado State University identification evaluation system, which can compare face identification algorithms under application-specific. First of all, introduced the old system; then taken the logging system for desktop of PC as an example, designed the comparing system of face identification algorithms under application-specific, coded the process of achieving and pre-processed data and described the steps of processing data; at last tested PCA_MahCosine, LDA_ldaSoft, Bayesian_ML, PCA_Euclidean and Bayesian_MAP five common face identification methods, conclude Bayesian_ML algorithm is the best algorithm in face recognition logging system for logging on PC desktop and give the parameter in the system, provide a sample for testing face identification algorithms under application-specific.