Research on the Decision Making of Large Public Building Maintenance Cycle

2011 ◽  
Vol 243-249 ◽  
pp. 6302-6306
Author(s):  
Qian Wu ◽  
Shu Hua Gao ◽  
Hua Tang

Combination with the characteristics of large public buildings, taking well considerations of maintenance of buildings on safety and reliability of the circumstances. Decision-making models of the large public building maintenance cycle was proposed based on maintenance of quality comprehensive evaluation. To quantify the degree of recovery of large public buildings based on the quality of maintenance using the method of AHP and Multi-level fuzzy comprehensive evaluation method. To make reasonable amendments on the reliability of experience according to the recovery degree of the reliability. In order to calculate the maintenance cycle of the large public buildings , the two models of maximum reliability and minimum total cost of building structure and equipment pipe components are applying with, and then to making dynamic arrangements of preventive maintenance cycle according to the quality of the maintenance.

2011 ◽  
Vol 219-220 ◽  
pp. 814-819 ◽  
Author(s):  
Jun Liu ◽  
Yan Li

Evaluation of teachers is one of the most important sectors for colleges and universities to foster a high-quality teaching staff influencing the training qualities of students directly. Scientific and rational evaluation of teachers has the important guide functions to improve the quality of teachers, inspire teachers' potential and creativity and encourage teachers to make constant progress. It is difficult to evaluate one teacher objectively and fairly using the ordinary evaluation method for the influencing factors are more and complex. The fuzzy comprehensive evaluation method of selecting outstanding teachers in university is proposed in this paper, its main goal is to make the scientific and rational evaluation on one teacher and select outstanding teachers. Finally, an example of fuzzy comprehensive evaluation on one certain teacher for the illustration of the proposed method is represented, the result indicates that the scientific and rational evaluate result is provided by the fuzzy comprehensive evaluation method.


2012 ◽  
Vol 239-240 ◽  
pp. 1476-1479
Author(s):  
Xin Hui Zhang ◽  
Hong Liang Pan ◽  
Shi Liang Yang ◽  
Teng Li ◽  
Qing Zhang

Aiming at the quality of ammunition management in rear depot, this paper determines an evaluation objective system and makes a detailed analysis on its structure. On the basis of this, an evaluation model for ammunition management quality--tree structure model for multi-objective and multistage fuzzy comprehensive evaluation is proposed. Examples are used to demonstrate its evaluation process.


2010 ◽  
Vol 108-111 ◽  
pp. 888-892
Author(s):  
Ya Qing Jiang ◽  
Na Na Tian ◽  
Si Jia Zhang

Self-compacting concrete (SCC) has been widely used in engineering for improving the product quality and efficiency at the construction sites, enhancing the working conditions and the appearance of concrete. Workability is an important property of SCC. But none of a single method has been developed for evaluation workability of SCC efficiently. Aiming at the quality control of fresh SCC, a fuzzy comprehensive evaluation method for evaluating workability of SCC was put forward and a case study was done by measuring slump, slump flow, L-box ratio, J-ring flow, bleeding and sieve segregation of fresh SCC in the present paper. Evaluation results indicated that fuzzy comprehensive evaluation method can give a quantitative evaluation of workability of SCC and it is convenient to establish an expert system for controlling the quality of fresh SCC by using fuzzy comprehensive evaluation method.


2011 ◽  
Vol 243-249 ◽  
pp. 4969-4974 ◽  
Author(s):  
Li Ming Wu ◽  
Zi Jian Wang

Establish a nonlinear membership function of slope stability taking the case of six different sliding blocks on a typical slope and do a second class fuzzy comprehensive evaluation on the determinate membership. Comparing the result of stability evaluated with former result determined by extension classified method, it shows that it is basically conforming to evaluate slope stability using membership function which is established according to the changing rules of impact factors of slope such as quality of rock, massiveness of rock mass and dip angle of rock. This method can be referential in a qualified sense for the forecasting and preventing of landslide disasters.


2010 ◽  
Vol 143-144 ◽  
pp. 503-508
Author(s):  
Shan Lu

In this paper, based on theoretical research and empirical investigation, an index system is created for the evaluation of express companies’ emergency logistics capability from three types of capabilities, namely, emergency decision-making, implementing emergency plans and information assurance, by taking into consideration the characteristics of emergency logistics of express companies. In the issue of weight determination of the indices, given the subjectivity caused by individual evaluation, the approach of group decision making by multi-experts is introduced, which is the combination of we have introduced a group decision-making approach, that is to combine identically scaled weighting of judgment matrix and clustering weight determination. Multi-level fuzzy comprehensive evaluation method is chosen to evaluate express companies’ emergency logistics capabilities.Through empirical study, the validity and practicability of the index system and the evaluation method are both confirmed(verified).


2012 ◽  
Vol 490-495 ◽  
pp. 698-705
Author(s):  
Hong Bing Qiao ◽  
Ao Shuang Pang ◽  
Hai Long Xu

This paper first introduces fuzzy comprehensive evaluation method to mine machinery. We evaluate the mine elevator braking system's reliability comprehensively from the perspective of the system. Application of the engineering calculation method can prove the reliability of the whole braking system systemically and completely. The precise data of real-time reliability could supply scientific and reliable information directly to hoist staff. The introduction of the method makes up the blank of analysis for elevator braking system safety and reliability, and provides a new thinking for performance evaluation of mining machinery.


2012 ◽  
Vol 594-597 ◽  
pp. 2061-2065
Author(s):  
Dan Liu ◽  
Na Hu ◽  
Han Yong Liu ◽  
An Gong

The water of Shenwo reservoir has been seriously polluted. In order to avoid the inaccurate evaluation results of a single index, the variable fuzzy comprehensive evaluation method has been adopted to comprehensively evaluate the water quality of Shenwo reservoir based on the water quality data of Lan River section of Shenwo reservoir in 2011. The evaluation results have shown that the water quality of Shenwo reservoir belongs to grade Ⅳ, which tends to be grade Ⅲ. The evaluation results based on this approach will be more stable and reliable.


Author(s):  
Qingzhong Xu ◽  
Jun Zhao ◽  
Xing Ai ◽  
Weimin Huang ◽  
Guijie Wang

To provide guidance for the tool materials selection in the machining of high-strength steels, this article outlines the application of fuzzy comprehensive evaluation method for the cutting performance evaluation of cemented carbide tools, ceramic tools, and cermet tools. The results indicate that cermets with the best comprehensive cutting performance are chosen as the optimum tool materials for the machining of high-strength steels. Moreover, the severe adhesion wear characteristics of cemented carbide tools are detrimental to the surface quality of workpieces. The obvious crater wear and furrow-like scratches caused mainly by abrasive wear, as well as adhesive wear can shorten the life of ceramic tools. The sharp cutting edge and good wear resistance of cermet tools are not only beneficial to the machined surface quality of workpieces, but also prolong the tool life. The analysis of tool wear proves the reliability and accuracy of fuzzy comprehensive evaluation method.


Author(s):  
Z. Wu ◽  
Z. Luo ◽  
Y. Zhang ◽  
F. Guo ◽  
L. He

A Modulation Transfer Function (MTF)-based fuzzy comprehensive evaluation method was proposed in this paper for the purpose of evaluating high-resolution satellite image quality. To establish the factor set, two MTF features and seven radiant features were extracted from the knife-edge region of image patch, which included Nyquist, MTF0.5, entropy, peak signal to noise ratio (PSNR), average difference, edge intensity, average gradient, contrast and ground spatial distance (GSD). After analyzing the statistical distribution of above features, a fuzzy evaluation threshold table and fuzzy evaluation membership functions was established. The experiments for comprehensive quality assessment of different natural and artificial objects was done with GF2 image patches. The results showed that the calibration field image has the highest quality scores. The water image has closest image quality to the calibration field, quality of building image is a little poor than water image, but much higher than farmland image. In order to test the influence of different features on quality evaluation, the experiment with different weights were tested on GF2 and SPOT7 images. The results showed that different weights correspond different evaluating effectiveness. In the case of setting up the weights of edge features and GSD, the image quality of GF2 is better than SPOT7. However, when setting MTF and PSNR as main factor, the image quality of SPOT7 is better than GF2.


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