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The happening of forest fire has the characteristics of inevitability and chance. How can we effectively control firing disaster and make use of forest fire it is urgent to implement dynamically monitoring for forest fire. This paper, which analyzing comprehensively fire spreading model and some influenced internal & external factors, is concentrated on how to study fire spreading regularity...
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In the traditional earth dam seepage calculation, the permeability coefficient of saturated soil is considered as fixed value. Actually, the seepage of earth dam carries out unsaturated characteristics. The permeability coefficient of unsaturated soil is a nonlinear function which is closely related to volumetric water content and pore water pressure. Based on the saturated-unsaturated soil seepage...
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Internet has experienced decades of rapid development, as the cornerstone of the entire network the IPv4 also has become very mature. However, due to its own limitations, it has been gradually exposed many shortcomings, so IPv6 designed by IETF as an alternative to IPv4.This paper put forward three major transition technologies: dual-stack (Dual Stack), tunnel (Tunnel), the address protocol conversion...
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On the basis of analysing the central Huazhong HNC-22M system, the most widely used in our country with independent intellectual property rights, using the CNC code characteristics and the MasterCAM X6 5- axis general post processor file format, we detect MasterCAM X6 post-processing documents related processing information, so we propose 5-coordinate machine post-processing documents' special machine...
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On the difficulty for the current pattern recognition to deal with fuzzy uncertain information, in this paper, the author tries to give a definition of intuitionistic fuzzy relative entropy, and meanwhile introduces the weighted thought into fuzzy pattern recognition, putting forward the method of Pattern Recognition based on Weighted Intuitionistic Fuzzy Relative Entropy. The new method accurately...
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The cast-in-situ prestressed concrete hollow slab is a new type of slab. It combines the unbonded prestressed and the cast-in-situ concrete technology and it has the advantage of long-span, light weight and excellent performance of isolated voice. But the research on the performance of the cast-in-situ prestressed concrete is not so more, at present investigation is mainly focused on non-prestressed...
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Numerical simulation, combined with field observation, has proved effective on measuring the main roof weighting step, while theoretical calculation and empirical formula are found to be inadequate for the working face. Considering the mining situation in Xiaohezui Mine, discrete element method is adopted to numerically simulate the working face mining pressure, and according to it, field observation...
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With outside disturbing effects, large hydraulic straightening machine's total load changes intricately and its precision is less than ideal requirements when being straightened. This paper preposes the fuzzy control strategy, and realizes high-precision control of the straightening machine.
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In order to achieve the low-carbon construction and operation in the water system of mountainous residential district, the key link of greenhouse gas (GHG) emission of water system in mountainous residential district was studied, and GHG emission was analyzed and quantified. According to the key link of GHG emission, trying to transform the traditional mode of long distance transportation of the drainage...
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In the resource constraint Wireless Sensor Network(WSN), link quality and node residual energy are the key factors that need to be considered in the routing problem. This paper proposes a routing algorithm based on game theory. Firs it sets up the game model based on the Quality of Service(QoS) and node residual energy. Then it shows that the game has a unique Nash equilibrium solution, and analyses...
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The Coal-fired power industry accounts for more than 80% of total power generating capacity in China. However, the coal-fired power stations produce approximately 10% of the global total carbon dioxide emissions. This paper uses Life Cycle Assessment (LCA) method to calculate carbon emissions of a typical coal-fired power station in China. The result shows that carbon emission per Kilowatt-Hour (kWh)...
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With the monitoring rang expanded increaingly, the topology of the network environmental monitoring system needs to be developed from the single-layer structure to the multi-layer structure, which branch node function setting and optimization problems are very important. The structure of the overlay network currently being used in the environmental monitoring system is complex, and its communication...
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Microblogging, as a new network media, is playing a positive role on guiding public opinion and on dominating utterance. It offers a new type of tool for social management, such as 'Government Affairs Microblogs' and 'Supervision of Government Microblogs'. Meanwhile, it brought some practical social problems. Overall, the positive role that microblogging could play is very important to a benign development...
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LED lighting becomes the forth generation green lighting. However, in terms of LED development and large-scale application, the reliability of LED has become one of the technical bottlenecks. This paper carried out the research on the thermal-humidity reliability of high power LED module by the means of experiment and simulation, which mainly aims at the reliability problems existed in high power...
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This paper presents a GIS-based spatial-variable model for the optimal management for in-bin stored grain and our new advances in the research of the model. The spatial variables are defined by a number of coverages. Each coverage includes a number of vector curves to present spatially the temperature, moisture and other status of stored grain. Thus, the status of stored grain at any time can be described...
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High-rise buildings dumping to the ground caused by blasting demolition will generate collapse seismic waves, which will influence or even damage to surround or underground construction in the course of its propagation. With the constantly increase of city buildings' height and volume, the increasingly complex blasting environment and the improved people's awareness of environment, the collapse vibration...
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Interpolation technique is often used in analyzing groundwater flow and physiochemical parameter distribution. In order to select an optimal interpolation method to describe the spatial distribution of groundwater properties, the spatial correlations of parameters such as groundwater level, salinity and nitrate were studies, based on which the inverse distance weighting (IDW) and Kriging interpolation...
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Transportation has entered in a critical period of enhancing the quality and level of service, and it also has got into the mode of development of transition. Setting of professional group should work closely with the current and future transport development plan in Sichuan, to pinpoint the position of higher vocational education in the transportation industry and regional economic development. This...
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Considering the water-weakening properties of completely weathered granite, a lot of tests were done to study its water stability, and the regularity between water-related stability coefficient, a notion which is introduced, and compactness, the content of cement the water content and cu ring time were discussed. Besides, the rule and mechanism of strength in the dry -wet cycles were researched by...
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With the cumulative fatigue damage theory, the residual fatigue life assessment model of crankshaft was built and its residual life was evaluated based on the history statistical working conditions. First, the three-dimension solid model of the crankshaft was formed by Pro/E software, and then imported into finite element analysis software ANSYS to perform dynamic response calculation under typical...
