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This paper is concerned with the problem of applying catastrophe theory in buildings fire risk assessment. Firstly, by using the Delphi method, the buildings fire risk evaluation indices system is developed. Secondly, by using the catastrophe theory, the buildings fire risk assessing model is introduced. Based on this fire risk assessing model, we can obtain the buildings' fire rating, and by analysis...
Evaluating the level and extent of urban land intensive use objectively can provide scientific basis for urban land resources reasonable allocation and the land sustainable utilization. This article takes Mudanjiang built-up area as total evaluate unit, takes Xian area, Dongan area, Yangming area, Aimin area as partition evaluate unit, obtain the land area of some kinds of the four central areas by...
In this study we selected humidity index, days of sand wind in winter and spring, the texture of soil and the vegetation coverage as four indicators, to analysis and evaluation the desertification sensitivity of ChengDe regions by using the database of GIS technique evaluation factor. Results indicates that the desertification sensitivity of Chengde regions level is divided into three levels, namely...
Aiming at the characteristic of the HJ-1A HSI data created by environmental mitigation satellite, a method, which is based on the OIF model and CN spectral sharpening, to enhance the spatial resolution of hyperspectral images is proposed. Firstly, the best combination of bands is acquired through OIF model, to obtain the color composite images with low spatial resolution. Then, the enhancement of...
The author plans to choose the best planning project in the base of the comprehensive benefit of diversified planning projects. AHP Method and Fuzzy Comprehensive Evaluation method were applied. The result indicate that the index of the added plantation amount, improved degree of the plantation quality and so on are the leading factors to affect comprehensive benefit, and are the chief factors to...
Three different plasticity index subgrade soil are selected from seasonal frozen soil region. Static triaxial test is executed on the samples exposed to 0 to 7 times closed-system freeze-thaw cycles under different confining pressures. Resilient modulus is obtained from the line segment of deviator stress-strain curve. The results show that the resilient modulus of the same kind of soil increases...
Based on RS, GIS and statistical analysis, this paper discusses the relationship of rural settlement spatial distribution and topography, landform, soil erosion, economic development, as well as achieves the classification of population pressure in Huanren County in Eastean Mountain Areas. The results show that the distribution pattern of rural settlement is affected obviously by elevation, slope,...
With the coast zone takes the function for evaluate the target, build up with the attribute of maritime space, hydrology, weather, biology, chemistry, geology, economy, transportation, resources, environment…etc. is main contents of, have simple, the ocean function evaluation mathematics model of science, objective and metered characteristic. Combine the system engineering theories, according to Multiple...
It was very difficult to acquire satisfy classification result only using spectral information and textual information on the broad land of China. This paper divided the land cover regions based on multivariate data to improve classification accuracy which were Pa, BT, DEM, AVHRR NDVI time-series data and IM. Through principal components analysis, the information percent of first three principal components...
Marketization is the inevitable way for the socialization of ecological residence. Up to now, the ecological residence market doesn't form. Of all the limiting factors, economical factor is the crucial reason for the ecological residence marketization other than social, institutional or technological factors. Economic analysis is employed in this paper, negative externality, economy of scale, special...
Analysis relevant factors of Military vehicle safety, fuzzy comprehensive evaluation model military for vehicle traffic safety evaluation is proposed. On the base of building evaluation system of vehicle security in science, the paper applies the ISM model to draw multi-level hierarchy structure and fuzzy comprehensive evaluation model is set up. The military vehicle safety evaluation system software...
Microstructure surface undulation is an important parameter to denote the loess microstructure characteristics, but the current studies are mostly qualitative and quantitative two-dimensional analysis, which difficult to reflect the situation of soil microstructure surface undulation. Analysis based on the microstructure characteristics of loess in western Liaoning, translate the gray value which...
Focus on major eco-environment problems in Dongjiangyuan area, the paper selected twelve evaluation indexes (including terrain, climate, soil, vegetation index, land use type, socio-economic data) were set up based on RS and GIS technology. Using 100 m×100 m real area as basic unit, the spatial principal components analysis method is apply to calculate the eco-environment synthesis exponent according...
Uncertainty exists in the planning program, so effective evaluation on and prevention from risk help to improve the guidance function of planning. This paper firstly classifies the risky factors into three major categories including exploration stage, development stage and the constrainted; as well as six subcategories including resources fulfillment, exploration pace, production building pace, production...
This study explored the integration of spectral and spatio-temporal information, and investigated the contribution to landscape mapping of spatio-temporal information including DEM, slope, aspect, NDVI, ratio vegetation index, FVC by an example of Nikko montane area. The results demonstrated that spatio-temporal information could effectively improve the performance of montane landscape mapping. Finally,...
Estimation of gross primary production (GPP) from remote sensing data is an important approach to study regional or global carbon cycle. In this study, a satellite-driven model, vegetation photosynthesis model (VPM) was introduced to estimate gross primary production (GPP) of the semi-arid grassland ecosystem for the growing season (2006) in North China. Meanwhile, observed GPP derived from eddy covariance...
In order to realize the sustainable development and utilization of woody biomass energy resources in Henan province of China, the authors constructed a fitting evaluating system depending on the sustainable development theory and the regionally practical condition there. This system was constructed by three subsystems, six criterion layers and thirty two evaluated indexes belonging to these different...
Microbial flocculant (MBF) was extracted from waste yeast and used as a sludge conditioner with nano SiO2 particles. The effects of the new composite material on sludge dewatering characteristics were investigated. The equivalent concentration of MBF was defined as the mole number of adsorbed Cu2+ per volume solution. An equivalent concentration of 712 µmol/L MBF can be extracted under optimal conditions...
Ecological army barrack is the trend and goal of our military camp construction, however, the lack of systematic planning and construction system leads to the difficulties of its operability. A novel system for planning and construction of ecological army barrack is presented in this paper, which consists of ecological planning making, ecologic technology selecting, ecologic culture supporting, and...
The paper achieved identifying the Agricultural Non-point Source Pollution Critical Source Area in Xingkai Lake watershed using pollution index method with the help of RS and GIS. The conclusions were that: (1) the high pollution risk area mainly clustered in the border of ZhiYi, Baipaozi, Xingkaihu and Liumao Towns and the west southern area of Yangmu Town, and the serious soil erosion and high livestock...
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