Research on the Occurrence Mechanism and Evaluation of Coal Mine Accidents

2013 ◽  
Vol 295-298 ◽  
pp. 2889-2892
Author(s):  
Qi Zeng ◽  
Yan Yan Wu

Based on the analysis of the coal mine accidents dangerous sources and essential factors of occurrence mechanism, the coal mine accidents causation model is built by combing with system security theory and dangerous sources theory. This paper analyzes a large number of accidents causation factors and screens the main factors; finally the coal mine accidents hierarchical structure model is constructed. What’s more, combined with examples, the fuzzy analytic hierarchy process is applied to evaluate the accidents causation analysis.

2021 ◽  
Vol 2133 (1) ◽  
pp. 012041
Author(s):  
Junwei Zhang ◽  
Bowen Xiao ◽  
Miaomiao Cai ◽  
Jiangyu Fang ◽  
Zeguang Nie ◽  
...  

Abstract This paper will use analytic hierarchy process to evaluate abnormal vibration of diesel engine in operation. The possible abnormal vibration factors of diesel engine in use are further analyzed to ensure the normal operation of diesel engine in use. Combined with analytic hierarchy process, the hierarchical structure model is determined, and the problems are analyzed from different angles to reduce the influence of subjective factors.


2012 ◽  
Vol 193-194 ◽  
pp. 780-784
Author(s):  
Yin Zhang ◽  
Hui Yang

This article mainly study on AHP application in cave dwelling construction system, based on the combination with professional experience and the investigation of the folk, put forward the influence factors of building in caves, By establishing the hierarchical structure model ladder to explain the interaction of the various factors relationship,And then calculate and recognize the key factors in influencing of the cave-building, in the hope of improving the construction quality of a cave reference function.


2019 ◽  
Vol 37 (9) ◽  
pp. 876-884 ◽  
Author(s):  
Emre Eren ◽  
Umut Rıfat Tuzkaya

The outstanding pace of technological development around the world coupled with increasing population and rapid urbanization have brought along an ever-increasing demand for healthcare services. This trend results in an increasing amount and variety of medical wastes. Accordingly, the issue of effective collection, transportation and disposal of medical wastes, specifically in large cities, has become a critical concern from the viewpoint of urban logistics and holds great importance in terms of safety. This study aims to determine the safety of hospitals in their medical waste management function. The study involves the determination of medical waste management steps, establishment of a hierarchical structure, and weighting of the criteria within the established hierarchical structure by means of the analytic hierarchy process method. Afterwards, the extent to which these criteria are adopted in hospitals was evaluated by the medical waste management officers of those hospitals, and safety scores were obtained for each hospital by associating the results with the weighted values obtained by the analytic hierarchy process method. The model proposed for medical waste management problems encountered by healthcare institutions in Istanbul was implemented for a specific region of Istanbul province, and the obtained results were analyzed. Evaluation of the opinions of the healthcare officials for determination of the medical waste management safety scores showed that the “collection” criterion has significantly higher importance than the “temporary storage” and “transportation” criteria. “The effect on hospital personnel” sub-criterion of the “collection” criterion had the highest score. This revealed the importance of the collection process that takes place between storage and transportation, for evaluating the human waste-based risks.


2011 ◽  
Vol 14 (4) ◽  
pp. 41-50
Author(s):  
Ngan Truong Nguyen

Soil erosion is a global environmental problem. The affecting main factors for soil erosion processes are different due to the specific areas. The calculated results of soil erosion, by Ha Quang Hai and Tran Tuan Tu, demonstrated that Song Be basin is eroded very huge, about 321 tons/ha/year. The article is based on factors proposed by R.P.C Morgan in 2005, using the analytic hierarchy process AHP (Thomas L. Saaty, 1970) to determine the weights for these factors. Since then, the article concluded main factors affecting soil erosion at Song Be basin. Research results showed that the Terrain factor has the largest weight (0.30), followed by two factors: Plant cover (0.29) and Rain (0.28). The article also identified four main factors impacting on the soil erosion at Song Be basin, including: slope, land cover ratio, intensity of rainfall and slope length. These results will be the basis for subsequent studies to adjust USLE model more applicably for erosion characteristics in the researched area.


2022 ◽  
Vol 355 ◽  
pp. 02026
Author(s):  
Xuanhang Wang ◽  
Zhijian Liang

Relatively independent evaluation parameters are selected from many parameters through pedigree clustering.Learning the analytic hierarchy process (ahp) and entropy weight method can determine the weight, and at the same time to understand the error of the analytic hierarchy process (ahp) and entropy weight method is large, so the combination of the subjective and objective weight obtained by the two methods, using the improved entropy weight-ahp method to determine the weight. The improved weight calculation method has a clear hierarchical structure, which not only considers the influence of subjective and objective factors, but also makes full use of the weight information in the hierarchical structure. Considering the uncertainty of information, gray relation is adopted to deal with the data, so as to make maintenance rules.


Author(s):  
Javad Rezaeian ◽  
F. Talebi ◽  
R. Alizadeh Foroutan

Today, the use of herbal medicine like artichoke is rapidly increasing worldwide. The consumption of artichoke as a food source is raising too. Therefore, it is necessary to determine the main factors affecting the growth of this plant which is investigated in this study. A comprehensive analysis of the literature is performed to detect these factors. A fuzzy Analytic Hierarchy Process (AHP) is employed to prioritize the factors. Results indicate that the conditions of irrigation and soil are the most important ones. In addition, the best conditions for artichoke growth are the medium level of irrigation, soil with suitable drainage, low temperature and sufficient sunlight.


Sign in / Sign up

Export Citation Format

Share Document