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Based on a classic six-degree fixed wing aircraft, a flight control experimental platform based on FlightGear simulator is presented in this paper. Aircraft model and flight control GUI are written based on Matlab/Simulink, and flight simulation data are fed to the FlightGear simulator through its I/O port, then the real-time 3D visual flight simulation is implemented. At the meantime, the curves of the flight parameters are obtained in the flight GUI, the relevance between mathematical variables and their physical meanings can be enhanced and the understanding of the linking theory with practical can be improved. The simulator presented in this paper has high openness, and can be not only operated by teachers for demonstration but also can be used by students for designing flight systems with different difficulty rating. Therefore, the ability of the application of the aircraft control theory can be advanced. [ABSTRACT FROM AUTHOR]

Automatic detection and conversion technology is a highly practical subject，but students often only listen to the principle of the physical and can not see the internal structure in the teaching process，and result in low efficiency. Sensor device is bulky， the teacher carry it to the class is inconvenience，the classroom scene dismantling delay time influence teaching. By using 3D visualization technique，using electromagnetic flowmeter as research object，this paper designs a 3D simulation system for electromagnetic flowmeter. Firstly，3ds Max modeling software is used to build three-dimensional model of the electromagnetic flowmeter，and then the model is imported into video editing software Premiere. A three-dimensional simulation system for electromagnetic flowmeter is developed by Premiere powerful editing functions， it realizes the explanation principle of electromagnetic flowmeter， shows the internal structure and the simulation of electromagnetic flowmeter measurement principle. The experimental results show that the system has the advantages of vivid picture，clear sound and easy for use. [ABSTRACT FROM AUTHOR]

In order to increase the visibility and contrast effect of air pollutants, and more visually demonstrate the impact of the meteorological characteristics on the air pollutants concentrations, this paper firstly conducts a periodical analysis of PM2.5 pollutant concentration in Ningbo. The data are obtained by the extracting the seasonal variations of PM2.5 pollutant concentration. Secondly, a reliability lest on Ningbo meteorological data and air pollution data is carried out. The results show that the confidence interval is over 90% . Thirdly, the paper analyzes the data concerning the wind power and direction in Ningbo, using Python language to conduct a polar coordinate transformation, and also an analyzes the visibility test on wind power and direction. Finally, by using Python language, a demonstration of the PM2.5, PM10, SO2, NO2, O3 and CO concentrations through the 3D coordinate system has been completed. After the four steps, we conclude that through reliability test, polar coordinative transformation, frequency comparison, by directly using the air and meteorological data, visibility contrast and correlation analysis could be positively completed. [ABSTRACT FROM AUTHOR]

In medical computer assisted instruction and clinical diagnosis，3D visualization of medical CT data can heljD researchers to observe and detect the internal information. In view of this， in order to achieve better visual effect of medical CT images，we propose an development platform based on visualization toollcit and VC + +6.0，and analyze the basis composition and the principle of VTIK Marching Cubes algorithm of surface render and )ay Casting algorithm of volume render are used to realize 3D visualization of CT images. Experimental results show that this algorithm can effectively obtain the good 3D reconstruction effect of CT images. [ABSTRACT FROM AUTHOR]