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      • Energy conseiVation researeh on Kang, walls of rural houses in north areas of China

        Tiemao Shi,Xiaodong Xia,Yuxiang An 국제온돌학회 2007 International Journal of Ondol Vol.2 No.1

        With the lacking of electricity and coal, people have to face the scarce of energy. more and more problems about the air pollution, the environment and such series of aspects appearing, which make people to realize the importance of the ecological environment. Through theenergy conservation analysis about the rural houses in north areas and the application of some typical energy conservation methods, this article shows the necessity of energy conservation of rural houses in north areas and the future trend of development.

      • Diffusion effect analysis of pollution gas under the impact of urban three-dimensional pattern

        Zhou Shiwen,Li Sui,Shi Tiemao 국제온돌학회 2017 International Journal of Ondol Vol.10 No.1

        The paper applies CFD numerical simulation technology, selects the typical urban commercial block as the research object, uses PM 10 which are from automobile exhausted gas as the source of pollution, simulates the spatial density distribution of the inhalable particle, verifies the accuracy based on the monitoring data and reveals the diffusion rule of atmospheric pollutants in the three dimensional block space. The results show that there is a close relationship between the diffusion effect of the contaminated gas and three dimensional landscape pattern in blocks. At different height levels such as 10 meters, 30 meters and 50 meters, the decreasing trend of the density of the pollutants and the uniformity of the spatial distribution are quite obvious. The height of the buildings along the streets, the space combination and the shape of the buildings themselves determine the inner smoothness of the streets. In the urban planning, one must fully consider the effect of three dimensional pattern on air pollution in blocks. From the aspects of urban ventilation, open space, height of the horizon line and disheartened space of the bottom, three dimensional landscape pattern of urban blocks should be optimized, which can effectively improve the current situation of severe atmospheric pollution.

      • Optimization of urban ecological security and spatial pattern based on remote sensing monitoring- A case study of Shenyang

        Jiang Mingzhuo,Li Sui,Li zhenxing,Shi Tiemao 국제온돌학회 2016 International Journal of Ondol Vol.9 No.2

        The study concentrates on the status of ecological environment development in Shenyang, uses the remote sensing images and social statistics in different periods as the data base, establishes a dynamic monitoring system and model of urbanization and ecological security. Through the identification and quantitative analysis of ecological security dynamic monitoring information, with the support of spatial information technology, we have formed a key technology system which combines ecological security warning with ecological security structure optimization. Moreover, the spatial database of ecological key elements in Shenyang city was constructed. The vertical pattern, horizontal pattern and ecological function of urban ecological system is organically combined, which provides the basic data for the layout and regulation of green space and water system. With these efforts, a key technology system is formed, including the warning of urban ecological security- the space regulation of economic development- the optimization of urban ecological security pattern - the regulation of urban elements’ spatial layout. The research results provide scientific and accurate data base for ecological planning and regulation in Shenyang City, carry out effective ecological security monitoring and management for the development of Shenyang, protect the ecological integrity of the system as well as the healthy development of the economy in Shenyang City during the urbanization process.

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