Study on Spare Part Requirement Prediction Model of Aircraft Battle Damage Assessment and Repair Based on Layer Analysis Method

2013 ◽  
Vol 331 ◽  
pp. 626-630 ◽  
Author(s):  
Wu Wen Yao ◽  
Kai Long Cai ◽  
Ping Zhou ◽  
Yan Li

The necessity and actuality of spare part requirement prediction on aircraft battle damage assessment and repair were analysised. The calculation models, such as the quantity of the battle damage aircraft, the battle damage number of aircraft component, the equipment of aircraft battle damage assessment and repair, were set up. They could provide the reference and basis for constituting the advance project of aircraft battle damage assessment and repair and for repair guarantee.

2013 ◽  
Vol 321-324 ◽  
pp. 1168-1171
Author(s):  
Xiao Nan Zhang ◽  
Jun Feng Yang ◽  
Si Liang Du ◽  
Jun Zhi

Battle Damage Assessment (BDA) is to assess the damage degree of enemy’s target after being attacked. In modern war, combat commanders always make decision on the basis of BDA. In this paper, an automatic method for assessing the damage extent of an attacked airport based on the image taken before and after a strike is described. Firstly, the airport blockade condition is analyzed and damage assessment criteria of airport are proposed. Secondly, three steps of the image information pretreatment are carried out and a reliability analysis method of image information is proposed. Lastly, damage assessment result is calculated to verify the validity and availability of the proposed method.


2013 ◽  
Vol 321-324 ◽  
pp. 2367-2370
Author(s):  
Xiao Nan Zhang ◽  
Si Lang Du ◽  
Jun Feng Yang ◽  
Wei Cao

It is found that the traditional BDA methods are not appropriate the system target BDA. A new method of the system target BDA is proposed in this paper. Firstly, based on Hierarchy Analysis Method (AHP), the system target function index system is set up. Secondly, the step of system target function damage assessment method is analyzed and proposed based on Fuzzy Analytic Hierarchy Process (FAHP). Finally, an example of air base damage assessment is given to verify the validity and availability of the proposed method.


2013 ◽  
Vol 331 ◽  
pp. 31-34
Author(s):  
Wu Wen Yao ◽  
Ping Zhou ◽  
Sheng Li Hou ◽  
Yun Kui Gao

In order to solve the fight problem of damaged airplane in war, based on linear elasticity, elastoplasticity and net section yield criterion, the calculation model for residual strength of plate with smooth circular hole is founded. Furthermore, the flexibility of calculation models using these three methods is analyzed through examples. All above can be basis for airplane battle damage assessment.


2000 ◽  
Author(s):  
Scott MacBeth ◽  
Johnnie Jernigan ◽  
Jackie Grody ◽  
Donald L. Thomas ◽  
Michael E. Clark

The selection of hospital sites is one of the most important choice a decision maker has to take so as to resist the pandemic. The decision may considerably affect the outbreak transmission in terms of efficiency , budget, etc. The main targeted objective of this study is to find the ideal location where to set up a hospital in the willaya of Oran Alg. For this reason, we have used a geographic information system coupled to the multi-criteria analysis method AHP in order to evaluate diverse criteria of physiological positioning , environmental and economical. Another objective of this study is to evaluate the advanced techniques of the automatic learning . the method of the random forest (RF) for the patterning of the hospital site selection in the willaya of Oran. The result of our study may be useful to decision makers to know the suitability of the sites as it provides a high level of confidence and consequently accelerate the power to control the COVID19 pandemic.


2005 ◽  
Vol 492-493 ◽  
pp. 471-476 ◽  
Author(s):  
Zhi Guang Zhou ◽  
Lian Meng Zhang ◽  
Qiang Shen ◽  
Dao Ren Gong

From the process of sedimentation the mathematical relationship between deposition volume and powder properties as well as sedimentation parameters was deduced in this paper. The relationship was expressed by using indirect method. Based on the formula, design model and prediction model were set up. The models can be used to design powder properties and predict the volume fraction of FGM. Programs to solve the models were developed in numerical methods. As examples, TiC-Ni system FGM were designed and predicted. The prediction results fit well with the design. Experiment of Mo-Ti system FGM was used to validate the prediction model.


2014 ◽  
Vol 548-549 ◽  
pp. 641-645
Author(s):  
Mao Hua Liu ◽  
Xiu Bo Sun

Grey prediction model is a model to predict the trend maturely, its application in the subway safety monitoring is of great significance. Set up by MATLAB software to complete the grey prediction model, and take the surface monitoring point for example, Comparing the prediction value with the actual measured value, analysis by the accuracy, obtain the trend of surface change around the subway station.


2015 ◽  
Vol 14 (4) ◽  
pp. 101-108
Author(s):  
Pinchao Meng ◽  
Weishi Yin ◽  
Yanzhong Li

Abstract In this paper 12 economic indices of the software industry in 30 cities/provinces in China are used to set up an evaluation system for the competitiveness of the regional software industry. By using the statistical analysis method of factor analysis, an evaluation model of the comprehensive competitiveness of the software industry for each city/province is built. Taking Beijing and Shanghai as examples, the comprehensive competitiveness and problems of the software industry in Jilin province are compared and analyzed.


2012 ◽  
Vol 503-504 ◽  
pp. 1301-1305
Author(s):  
Xia Chen ◽  
Min Liu ◽  
Lin Li

With respect to airport damage assessment problem, the analysis method is proposed. The airport damage is assessed according to the secondary fuzzy comprehensive evaluation model. Then the evaluation method of target damage level is given by the compare methods of interval numbers. Finally, the example calculations are given to demonstrating the effectiveness of this method.


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