Application of Fuzzy Analytic Hierarchy Process in Selection of Electrical Heat Tracing Elements in Oil Pipelines

2013 ◽  
Vol 367 ◽  
pp. 452-456 ◽  
Author(s):  
Xiao Gang Zhao ◽  
Yi Zhou ◽  
Jian Yu Zhao

The Fuzzy Analytic Hierarchy Process (FAHP), based on the combination of Fuzzy Comprehensive Evaluation and AHP, is introduced in this paper and C# language is proposed to program its mathematical model. Moreover, such program is applied in the actual selection of the electrical heat tracing elements in oil pipeline system. The application shows that it is scientific, reliable, accurate, simple and rapid, which makes it suitable for other evaluations.

2013 ◽  
Vol 787 ◽  
pp. 1002-1005 ◽  
Author(s):  
Jian Yu Zhao ◽  
Yi Zhou ◽  
Xiao Yang Cai

With the growing development of the society nowadays, the economic growth in China is also increasing fast, which deeply influences the decisions and options that university students make to plan for their future and to seek for the opportunities of the internship. This paper analyzes the attitude and the aims towards to internship for the university students, especially for those who major in engineering management, combining the actual cases analysis, this paper introduces the Fuzzy Comprehensive Evaluation (FCE) and Analytic Hierarchy Process (AHP) to build the combination model named Fuzzy Analytic Hierarchy Process (FAHP). It is applied to better selection of the internship for whom majoring in engineering management. The actual results show that it can solve such multi-factor, multi-level and uncertain decision making problems, which is of practical significance to the university students who are searching for the internship of engineering management.


2014 ◽  
Vol 687-691 ◽  
pp. 1641-1644 ◽  
Author(s):  
Xi Shang Dong ◽  
Huai Zhi Ma ◽  
Zhen Yang

Analytic Hierarchy Process (AHP) and Fuzzy Analytic Hierarchy Process (FAHP) are important methods in model prediction. In this paper, a case concerning in how to estimate the serial criminal’s next possible crime location is researched. Two models are devised to determine the “geographical profile” of a suspected serial criminal. Model 1 is proposed that we use the AHP and consider many factors which may influence a criminal to choose his next crime location. Model 2 is an improvement of Model 1. It is a combination of the FAHP and the Fuzzy Comprehensive Evaluation Theory (FCET). And it overcomes the difficulty of dealing with uncertain factors, which model 1 cannot work. In the end, performances of the above models are analyzed.


2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Yang Li ◽  
Yahui Li ◽  
Zijiao Han ◽  
Guoqing Li ◽  
Kai Gao ◽  
...  

Studying optimization and decision for opening electromagnetic loop networks plays an important role in planning and operation of power grids. First, the basic principle of fuzzy analytic hierarchy process (FAHP) is introduced, and then an improved FAHP-based scheme evaluation method is proposed for decoupling electromagnetic loop networks based on a set of indicators reflecting the performance of the candidate schemes. The proposed method combines the advantages of analytic hierarchy process (AHP) and fuzzy comprehensive evaluation. On the one hand, AHP effectively combines qualitative and quantitative analysis to ensure the rationality of the evaluation model; on the other hand, the judgment matrix and qualitative indicators are expressed with trapezoidal fuzzy numbers to make decision-making more realistic. The effectiveness of the proposed method is validated by the application results on the real power system of Liaoning province of China.


2019 ◽  
Vol 2019 ◽  
pp. 1-10
Author(s):  
Xin Liu ◽  
Chengwei Ni ◽  
Liye Zhang ◽  
Ke Sheng ◽  
Baoning Hong

The durability of lightweight cellular concrete (LCC) and the corresponding assessment method are studied in this paper to improve the utilization of LCC in subgrade construction engineering. The durability assessment method is established by combining the analytic hierarchy process (AHP) with fuzzy comprehensive evaluation (FCE). The main assessment processes are as follows. Firstly, based on the physical and mechanical properties of LCC, the influencing factors are selected in terms of preliminary design, construction technology, and operation and management after completion of construction. The grading standard of influencing factors is established as well. Secondly, a multilevel assessment model with targets level, criteria level, and indexes level is established. AHP determines the effective weight of the lower level relative to the upper level. The consistency check of the judgment matrix is conducted to prove the rationality of the distribution of influencing factors’ effect weight. Thirdly, the membership function which is suitable for each influencing factor is built to calculate the membership degree. Besides, the practicality and reliability of AHP combined with FCE are demonstrated through a practical engineering case, which is the third section of a highway in Guangdong Province, China.


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