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To ensure the reliability and safety, hydraulic/electro-hydrostatic dissimilar dual redundant actuation system is widely used in advanced civil aircraft. Considering the change of dynamic performance of hydraulic actuator (HA) and electro-hydrostatic actuator (EHA), this paper establishes performance reliability model based on parameter drift model, and presents the calculation methods of performance...
With regard to the frequent food supply chain risk incidents situation, This paper divides the hierarchical structure of food supply chain risk factors with F-AHP, and buildes a food supply chain risk factor identification system and risk fuzzy comprehensive evaluation model on the basis of definition of food supply chain. Meanwhile, by taking the food supply chain of one diary producer for example,...
The basic task of Major Function Oriented Zone (MFOZ) is to optimize the structure of national land use. The research is concentrated on the process of applying 3S technologies. Based on the analysis of the need, identity, and content, we investigate the theory foundation and appliance of various 3S technologies, including database, model-base, spatial analysis, spatial multi-criteria decision, cellular...
With the continuous urbanization in China, to meet the demand of current urban 3D cadastre development and management, the necessity and probability of 3D cadastre firstly are discussed, and then according to the building flow of 3D cadastre, key techniques that include data collection, store, management, display and apply are analyzed. And taking an example of Nanjing City, with the introduction...
By using the regional climate model RegCM3 this paper simulated the drought over Southwest China during 2009 and 2010. By using to the NCEP reanalysis data this paper analyzed the impact of the atmospheric precipitable water, the water vapor transport and the water vapor budget. The result showed that: atmospheric precipitable water was less about 20% than normal years during the drought. The meridional...
After explaining the concept of universities and colleges, and review the relative research of the learning organization and learning university, the issue analyzed the necessity and possibility of the universities organization change based on the learning organization. Based on the learning organization theory, the issue advanced the basic principles of the model conceiving and then the issue tentatively...
In order to investigate the global financial crisis's impact on logistics industry quantitatively, this paper selects 10 logistics listed companies respectively from China and US stock market as samples, calculates the default distances of the companies based on KMV model which is first proposed by US KMV company, analyzes the trend of credit risk change from the third quarter of 2008 to the third...
Hydrologic model setup is an important process in the whole model simulation. This study introduces an approach for hydrological simulation analysis based on extracting watershed features from DEM using Arc Hydro Tools. This method consists of two steps: firstly, extracting watershed features from DEM using Arc Hydro Tools. Then, process hydrological simulation analysis with hydrologic model HSPF...
In recent years, assembly cells as a new manufacturing system have clearly shown that it have the ability to generate significant performance improvements over unbuffered, multi-model, linked assembly lines and multi-model assembly lines with a finite buffer of inventory between stations. However, some effective methods for scheduling in real time in this manufacturing system are sparse. In this paper,...
Extracting watershed features from DEM (Digital Elevation Model) is a very important task in Hydrologic study, and also it is the pre-process of hydrological simulation analysis. This paper introduces a very useful method for Hydrological simulation analysis based on extracting watershed features from DEM using Arc Hydro Tools. Arc Hydro is a geospatial data model especially GIS for Water Resources,...
The paper has built a quantitative fuzzy decision model for FM (facility management) outsourcing. Firstly, an evaluation index system has been built based on SWOT analysis. Then a mathematical method integrating AHP, Fuzzy math and geometry is introduced for computing the geometric decision vector of FM outsourcing. Through a geometrical analysis on the vector, the dominant factor of the FM outsourcing...
In order to solve a series questions at present existing in machining technology of the disc with complex shape such as long process flow, great affects among working procedures and high cost, according to the outline of the part, the drawing process has been finished by one process instead of two, which is on the basic of the finite element numerical simulation and the experiment on simple dies....
A Tokamak is an important research device in controlled nuclear fusion. A toroidal field coil (TFC) system is an important part of a Tokamak, it produces a toroidal field (TF) to confine the plasma, so it is crucial to analyze the force-structure of the TFC in Tokamak design. In order to research the design method of TFC, we analyze the structural force and deformation of the TFC. The results are...
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