Research on Applied Technology with Optimization Methodology of Bottom Dead Center Accuracy Evaluation

2014 ◽  
Vol 1014 ◽  
pp. 443-446
Author(s):  
Qiu Shui Yao ◽  
Guo Ping Li

Bottom dead center (BDC) is an important performance index of press,but how to precisely evaluate the accuracy of BDC is a technical problem faced by the press industry. Based on fuzzy judgment method and analytic hierarchy process (AHP), this paper constructs a comprehensive evaluation index to analyze and evaluate the position of the BDC accuracy.Evaluation step is a system operated by selecting evaluation factors and building evaluation set to determine the comparison matrix, to calculate the weight of each factor, and to establish fuzzy evaluation matrix, and through comprehensive evaluation model to judge the BDC accuracy level. It shows that this evaluation method can effectively evaluate the accuracy of press.

Author(s):  
Chun-Quan Dai ◽  
Zeng-Hui Zhao

On the basis of expert questionnaire and the relevant specification, multi-factors influencing weight matrix was constructed by Analytic Hierarchy Process (AHP) improved in transfer matrix algorithm, and influential factors were fuzzy classified to construct the fuzzy evaluation matrix by using trapezoidal fuzzy membership function. Fuzzy evaluation analysis was carried out through multistage fuzzy comprehensive evaluation method, and verified in combination with engineering construction condition of shallow buried tunnel with large span of Zhongshan Park Station in Qingdao Metro, and four kinds of risk control schemes were established and compared on the analysis of tunnel construction risk. Results show that the model was feasible and the improved construction scheme was very effective to reduce the construction risk.


2013 ◽  
Vol 732-733 ◽  
pp. 1303-1307 ◽  
Author(s):  
Gui Shen Tian ◽  
Ji Cheng Liu ◽  
Jing Jing Zhou ◽  
Jun Li Liu ◽  
Bing Li

This article builds an efficiency evaluation model. Using AHP method, an evaluation indicator system is established, and the weights of the indicators are calculated. This paper applies Fuzzy Evaluation method to determine the membership function of qualitative and quantitative indicators, and then synthesizes the indicator weights and the evaluation matrix to get the fuzzy comprehensive evaluation result. Finally, a case of a certain power transmission & transformation project is studied, and the comprehensive evaluation result of its economic benefit is moderate.


2014 ◽  
Vol 571-572 ◽  
pp. 312-317
Author(s):  
Hai Yong Wang ◽  
Xiao Ming Wang ◽  
Jian Wu Dang

The fuzzy comprehensive evaluation model of comfort of high-speed train was established by using Fuzzy-ANP. In this model,firstly, the weight of each multiple index was determined by employing ANP; Secondly, the fuzzy evaluation matrix of multiple index was assessed by the expert scoring method; Finally, the evaluation grade of comfort of high-speed train under multi-hierarchy was discussed by using the fuzzy comprehensive evaluation method combined with the weight and the fuzzy evaluation matrix of each multiple index . The evaluation method provided an effective theoretical support for comprehensive assessment research of comfort of high-speed train through the analysis of an example. This template explains and demonstrates how to prepare your camera-ready paper for Trans Tech Publications.


2020 ◽  
Vol 64 (1-4) ◽  
pp. 1365-1372
Author(s):  
Xiaohui Mao ◽  
Liping Fei ◽  
Xianping Shang ◽  
Jie Chen ◽  
Zhihao Zhao

The measurement performance of road vehicle automatic weighing instrument installed on highways is directly related to the safety of roads and bridges. The fuzzy number indicates that the uncertain quantization problem has obvious advantages. By analyzing the factors affecting the metrological performance of the road vehicle automatic weighing instrument, combined with the fuzzy mathematics theory, the weight evaluation model of the dynamic performance evaluation of the road vehicle automatic weighing instrument is proposed. The factors of measurement performance are summarized and calculated, and the comprehensive evaluation standard of the metering performance of the weighing equipment is obtained, so as to realize the quantifiable analysis and evaluation of the metering performance of the dynamic road vehicle automatic weighing instrument in use, and provide data reference for adopting a more scientific measurement supervision method.


2021 ◽  
pp. 1-13
Author(s):  
Guoyi Chen ◽  
Jiansheng Zhang ◽  
Shangmin Zhang ◽  
Bangquan Yan

With the fierce competition under the background of knowledge-based economy, tourism enterprises are increasingly aware that they must turn their focus from traditional products to customers for the sake of survival and development. Integrating the customer relationship management and knowledge management, the customer knowledge management (CKM) has aroused higher attention from the tourism enterprises. As for how to determine the factors influencing the Customer knowledge management competence (CKMC) of tourism enterprises and their weights, an index system was established for evaluating CKMC of tourism enterprises based on the balanced score card (BSC) and knowledge management process, the weight design and consistency check of the indexes were implemented using the analytic hierarchy process (AHP), and the overall evaluation value and concrete index scores at all levels were obtained via the fuzzy comprehensive evaluation model. In the end, the scientificity and operability of the evaluation model were verified through an empirical analysis of China Youth Travel Service (CYTS). The results show that: (1) The business process, customer communication, system support, and market performance are important level I indexes used to measure the CKMC; (2) The key Level II factors influencing the CKMC of enterprises include customer knowledge sharing mechanism, timeliness of customer communication, degree of importance attached by senior leadership, and customer acquisition rate; (3) The evaluation model based on AHP and fuzzy evaluation method can objectively describe the overall up-to-standard degree of enterprises’ CKMC, and clearly identify the strengths and weaknesses. This research shows that the combination of AHP and fuzzy evaluation-based method is capable of more scientific and complete evaluation of CKMC, compensates for the deficiencies of single evaluation model, and provides a new method for the effective improvement of enterprises’ CKMC.


2014 ◽  
Vol 584-586 ◽  
pp. 2215-2219
Author(s):  
Yi Xuan Wang ◽  
Ying Wei Ren ◽  
Yong Heng Yao

According to the characteristics of resource allocation for engineering construction programme, the comprehensive evaluation model of resource allocation rationality for programme is established with the combination of analytic hierarchy process and fuzzy comprehensive evaluation method. The rationality of resource allocation for programme is evaluated objectively based on the assessment of correlation degree between monomer project and the programme and the evaluation of resource allocation rationality for monomer projects. And the evaluation results have been analyzed and sorted through the principle of weighted average.


2012 ◽  
Vol 482-484 ◽  
pp. 2390-2395
Author(s):  
De Qiang Li

In the paper, we establish an evaluation system in the study of four aspects such as people, regulation, equipment and technology management, field management and engineering construction. We present an entropy weight multi-level fuzzy comprehensive evaluation model in power plant security on the basis of reliability identification. Firstly, it identifies the reliability of power plant security evaluation system. Secondly, it can meet the condition that the system is reliable. Then it obtains the indicator weight of all levels in the evaluation system by the entropy weight method. Finally, it carries out a comprehensive evaluation in power plant security by the multi-level fuzzy evaluation method.


2010 ◽  
Vol 156-157 ◽  
pp. 79-83 ◽  
Author(s):  
Jian Yu Chu ◽  
You Po Su

The site selection for earthquake emergency shelter is important to ensure the safety and service ability of shelter in earthquake disaster. It is aim to establish earthquake emergency shelter site evaluation index system, make use of analytic hierarchy process method to determine the index weight, using comprehensive fuzzy evaluation method to evaluate and order the shelters in certain areas, and ultimately select earquake emergency shelters.


2014 ◽  
Vol 584-586 ◽  
pp. 2613-2617
Author(s):  
Li Shen ◽  
Yun Ting Zhou ◽  
Ji Rong Song

With the development of construction industry, engineering projects are becoming more and more large and complicated that makes the informatization more and more important, at the same time it produced a need of evaluation of engineering project informatization. A rough evaluation of engineering project informatization is established, and using the Fuzzy Comprehensive Evaluation Method based on Analytic Hierarchy Process (AHP) to evaluate the model quantitatively. Authors run the rough evaluation model by using the data of a simulation investigation performed on one project and obtain a result of the project's informatization level.


2014 ◽  
Vol 989-994 ◽  
pp. 5228-5231
Author(s):  
Wen Dan Zhang ◽  
Zhi Xia Jiang ◽  
Yan Zhong Li ◽  
Su Zhang

This paper attempts to employ the matrix of Strengths, Weaknesses, Opportunities, Threats (SWOT) to establish an evaluative index system for software enterprises in Jilin Province. The SWOT analysis is performed in combination with the Analytic Hierarchy Process (AHP) to determine the relative weights of various criteria in the analytic hierarchy as they are related to the overarching goal. The ultimate assessment of the developmental status of those provincial IT enterprises from the local (departmental/segmental) to the global (corporate/industrial) level will then be derived by applying a fuzzy comprehensive evaluation matrix in accordance with the principle of maximum associations. This approach promises to overcome drawbacks commonly found in conventional hierarchical analyses, where frequent adjustments and tests are often required to make results from judgmental matrix consistent. Examples with concrete analytic results have shown that this innovative, synthetic method is of promising guiding significance to corporate strategic formulations.


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