scholarly journals Quantitative safety evaluation of drilling engineering by combining analytic hierarchy process with alternating condition expectation

2021 ◽  
Vol 303 ◽  
pp. 01038
Author(s):  
Fan Kunkun ◽  
Wang Fangxiang ◽  
Wang Chunguang ◽  
Chen Shaojie ◽  
Lin Hai ◽  
...  
Keyword(s):  
Safety Evaluation ◽  
Oil Field ◽  
Evaluation Index System ◽  
Analytic Hierarchy ◽  
Great Loss ◽  
Proposed Model ◽  
Drilling Engineering ◽  
Ace Model ◽  
Potential Risks ◽  
Characteristic Values

Drilling engineering is important for development of underground resources. There are many potential risks in the process of drilling engineering. If the drilling safety is not effectively managed, it will lead to great loss. In order to predicate and prevent safety accidents, a safety evaluation index system is established and an AHP-ACE method is proposed. 23 groups of original drilling data are collected from a block of Xinjiang oil field, and the safety levels are quantitatively analyzed by characteristic values. First, the AHP method is applied to relate direct observation variables to potential variables by calculating weight and determining membership function of each index. Second, three potential variables are chosen as the input of the ACE model and a training set containing 17 groups of data is used to establish the mathematical relationship between the potential variables and drilling safety value. Finally, the validity of the proposed model is examined by matching it to the other 6 groups of data. This study provides a new and effective way to quantitatively evaluate the safety of drilling engineering.

scholarly journals An Evaluation Model for Tailings Storage Facilities Using Improved Neural Networks and Fuzzy Mathematics

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Sen Tian ◽  
Jianhong Chen
Keyword(s):  
Neural Network ◽  
Bp Neural Network ◽  
Evaluation Model ◽  
Back Propagation ◽  
Safety Evaluation ◽  
Evaluation Index System ◽  
Analytic Hierarchy ◽  
Operation Rate ◽  
Network Methods ◽  
Neural Network Algorithm

With the development of mine industry, tailings storage facility (TSF), as the important facility of mining, has attracted increasing attention for its safety problems. However, the problems of low accuracy and slow operation rate often occur in current TSF safety evaluation models. This paper establishes a reasonable TSF safety evaluation index system and puts forward a new TSF safety evaluation model by combining the theories for the analytic hierarchy process (AHP) and improved back-propagation (BP) neural network algorithm. The varying proportions of cross validation were calculated, demonstrating that this method has better evaluation performance with higher learning efficiency and faster convergence speed and avoids the oscillation in the training process in traditional BP neural network method and other primary neural network methods. The entire analysis shows the combination of the two methods increases the accuracy and reliability of the safety evaluation, and it can be well applied in the TSF safety evaluation.

Safety Evaluation of Underground Uranium Mine Ventilation System Based on Analytic Hierarchy Process and Fuzzy Comprehensive Evaluation

2014 ◽  
Vol 1010-1012 ◽  
pp. 344-352 ◽  
Author(s):  
Yong Jun Ye ◽  
Zhi Li ◽  
Jun Ting Jiang
Keyword(s):  
Comprehensive Evaluation ◽  
Ventilation System ◽  
Safety Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Mine Ventilation ◽  
Evaluation Index System ◽  
Uranium Mine ◽  
Analytic Hierarchy ◽  
Underground Uranium Mine ◽  
Safety And Reliability

Mechanical ventilation is an effective way to reduce and control radon concentration in underground uranium mine. Firstly, to meet the special requirements of radiation protection in underground uranium mine, the safety evaluation index system of underground uranium mine ventilation system based on the AHP and FCE was built from the perspective of safety and reliability. Secondly, this article elaborated how to distribute index weight by utilizing the AHP. Then, the introduction to the steps of FCE was given. Finally, these were applied to the safety evaluation of an underground uranium mine ventilation system. Subjective factors have little effect on the evaluation results due to the integrated utilization of the AHP and the FCE, moreover, the results are consistent with the real situation and are reliable. At the same time, the results point out the way to improve the safety and reliability of underground uranium mine ventilation system, which can facilitate the managers to make decisions.

A new method for ranking the usefulness of negative online reviews based on combined weighting method and improved TOPSIS

2022 ◽  
pp. 1-18
Author(s):  
Luting Yang ◽  
Yan Li
Keyword(s):  
Online Reviews ◽  
Entropy Method ◽  
Evaluation Index System ◽  
Analytic Hierarchy ◽  
Weighting Method ◽  
Fresh Food ◽  
Proposed Model ◽  
Text Feature ◽  
Improved Model ◽  
Hierarchy Process

Online shopping has gradually become an important way of consumption, and consumers are paying more and more attention to negative reviews. In order to avoid the massive amount of negative review information leading to loss of useful information, this paper proposes a method for evaluating the usefulness of negative online reviews. Firstly, the method constructs an evaluation index system for the usefulness of negative online reviews from three aspects: the form feature, text feature, and reviewer feature of negative reviews, and uses a combination weighting method based on fuzzy analytic hierarchy process (FAHP) and entropy method to determine the weight of each index. Secondly, the usefulness ranking results of negative online reviews are obtained through the improved TOPSIS method based on the combined weighting method. Finally, the empirical analysis of the proposed model is carried out by crawling the negative online reviews of JD.com Fresh Food platform, and the improved model is compared with the traditional TOPSIS model, which proves the feasibility and effectiveness of the model.

China's Oil Imports Supply Chain Safety Evaluation

2014 ◽  
Vol 1030-1032 ◽  
pp. 2538-2543
Author(s):  
Yao Wang ◽  
Jing Lu
Keyword(s):  
Supply Chain ◽  
Continuous Improvement ◽  
Safety Evaluation ◽  
Evaluation Index System ◽  
Evaluation Index ◽  
Analytic Hierarchy ◽  
Supply Chain Security ◽  
Oil Supply ◽  
Imported Oil ◽  
Hierarchy Process

Oil is an important energy source and it plays an significant role in the economic development of a country. With the continuous improvement of our dependence on foreign oil, supply chain security of imported oil has become the focus in all aspects. This paper analyzes the various factors that affect the supply chain security of China's imported oil, establishes the evaluation index system and uses fuzzy analytic hierarchy process to evaluate the supply chain security of China’s imported oil, at last proposes suggestions to strengthen oil supply chain security.

Research on Construction Safety Evaluation Based on Fuzzy-Set Pair Analysis Model

2011 ◽  
Vol 383-390 ◽  
pp. 6587-6593
Author(s):  
Guo Zhong Huang ◽  
Zhong Guang Wu ◽  
Can Sheng Yang ◽  
Hui Liu
Keyword(s):  
Fuzzy Set ◽  
Evaluation Model ◽  
Safety Evaluation ◽  
Construction Safety ◽  
Evaluation Index System ◽  
Set Pair Analysis ◽  
Analysis Method ◽  
Analysis Model ◽  
Analytic Hierarchy ◽  
Pair Analysis

Given factors influencing construction safety has characteristics of fuzziness and uncertainty, an evaluation model based on Fuzzy-Set Pair Analysis is put forward, which combines advantages of fuzzy comprehensive analysis method and set pair analysis method. According to characteristics of construction, the construction safety evaluation index system is constructed, the weight of each index is determined by Interval Analytic Hierarchy Process （IAHP） and connection degree is calculated, so the safety condition development and uncertainty rank of evaluated construction sites are calculated. It is shown that the model can deal with certainty and uncertainty of information in safety evaluation at the same time, thus good results can be obtained through application of the model.

Construction Safety Evaluation Based on Extension Theory

2011 ◽  
Vol 368-373 ◽  
pp. 1273-1277
Author(s):  
Mao Sheng Yang ◽  
Lei Liu
Keyword(s):  
Evaluation Method ◽  
Safety Evaluation ◽  
Element Model ◽  
Construction Safety ◽  
Building Construction ◽  
Extension Theory ◽  
Evaluation Index System ◽  
Analytic Hierarchy ◽  
Matter Element Model ◽  
Hierarchy Process

In order to assess the standardization of safety accurately and objectively, this paper establishes the safety evaluation index system for the building construction according to engineering experience. The weight of each index is decided reasonably by the Analytic Hierarchy Process. Based on extension theory, the evaluation matter —element model for evaluation of construction safety is established, and the extensional evaluation method with correlative functions is put forward. Thus, construction safety is systematically evaluated. Finally it verified by project example, the result proves its feasibility.

Study on Safety Assessment Modeling in Sijiaying Open-Pit Iron Mine

2012 ◽  
Vol 429 ◽  
pp. 200-205
Author(s):  
Ming Juan Lu ◽  
Ming Zhu ◽  
Wen Sheng Liu ◽  
Ai Xia Zhang ◽  
Li Xin Ai ◽  
...  
Keyword(s):  
Evaluation Method ◽  
Safety Evaluation ◽  
Mathematic Model ◽  
Evaluation Index System ◽  
Open Pit ◽  
Fuzzy Membership Function ◽  
Analytic Hierarchy ◽  
Potential Safety ◽  
Iron Mine ◽  
Expert Evaluation Method

Based on the analysis of potential safety problems and main factors effecting on safety in mining process, safety evaluation index system was constructed for Sijiaying Open-pit Iron Mine. The fuzzy subjection degrees are determined by setting up the fuzzy membership function, numerical value statistic and expert evaluation method. Analytic hierarchy process and fuzzy set method have been used to build the mathematic model, and then the evaluation results were given for reveal the disfigurement in mining process.

Food waste treatment option selection through spherical fuzzy AHP

2021 ◽  
pp. 1-11
Author(s):  
Aysu Melis Buyuk ◽  
Gul T. Temur
Keyword(s):  
Treatment Option ◽  
Food Waste ◽  
Waste Treatment ◽  
Fuzzy Ahp ◽  
Treatment Options ◽  
Analytic Hierarchy ◽  
Food Treatment ◽  
Novel Approach ◽  
Proposed Model ◽  
Option Selection

In line with the increase in consciousness on sustainability in today’s global world, great emphasis has been attached to food waste management. Food waste is a complex issue to manage due to uncertainties on quality, quantity, location, and time of wastes, and it involves different decisions at many stages from seed to post-consumption. These ambiguities re-quire that some decisions should be handled in a linguistic and ambiguous environment. That forces researchers to benefit from fuzzy sets mostly utilized to deal with subjectivity that causes uncertainty. In this study, as a novel approach, the spherical fuzzy analytic hierarchy process (SFAHP) was used to select the best food treatment option. In the model, four main criteria (infrastructural, governmental, economic, and environmental) and their thirteen sub-criteria are considered. A real case is conducted to show how the proposed model can be used to assess four food waste treatment options (composting, anaerobic digestion, landfilling, and incineration). Also, a sensitivity analysis is generated to check whether the evaluations on the main criteria can change the results or not. The proposed model aims to create a subsidiary tool for decision makers in relevant companies and institutions.

Grassland resource evaluation based on improved bp network model and analytic hierarchy process

2020 ◽  
pp. 1-12
Author(s):  
Zhou Jiang ◽  
Zhenwu Wei
Keyword(s):  
Sustainable Development ◽  
Analytic Hierarchy Process ◽  
Carrying Capacity ◽  
Index System ◽  
Evaluation Index System ◽  
Analytic Hierarchy ◽  
Bp Network ◽  
Resource Evaluation ◽  
Environmental Carrying Capacity ◽  
Hierarchy Process

Grassland resources are an important part of land resources. Moreover, it has the functions of regulating the climate, windproof and sand fixation, conserving water sources, maintaining water and soil, raising livestock, providing food, purifying the air, and beautifying the environment in terrestrial ecosystems. Grassland resource evaluation is of great significance to the sustainable development of grassland resources. Therefore, this paper improves the BP neural network, uses the comprehensive index method to calculate the weights in the analytic hierarchy process, and constructs a water resources carrying capacity research and analysis system based on the entropy weight extension decision theory. Meanwhile, this paper analyzes different levels of resource and environmental carrying capacity to achieve the purpose of comprehensive evaluation of resource and environmental carrying capacity. In addition, based on the theory of sustainable development, under the guidance of the principle of index system construction, this paper studies the actual situation of grassland resources and the availability and operability of data, and combines with the opinions given by experts to form an evaluation index system of grassland resources and environmental carrying capacity. Finally, through the actual case study analysis, it is concluded that the model constructed in this paper has a certain effect.

Analysis of the Safety Factors of Municipal Road Undercrossing Existing Bridge Based on Fuzzy Analytic Hierarchy Process Methods

2021 ◽  
pp. 036119812110318
Author(s):  
Yonghong Yang ◽  
Yu Chen ◽  
Zude Tang
Keyword(s):  
Safety Assessment ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Safety Evaluation ◽  
Safety Factors ◽  
Analytic Hierarchy ◽  
Road Engineering ◽  
Existing Bridges ◽  
Hierarchy Process ◽  
Engineering Projects

Increasing traffic volume and insufficient road lanes often require municipal roads to be reconstructed and expanded. Where a road passes under a bridge, the reconstruction and expansion project will inevitably have an impact on the bridge. To evaluate the safety impact of road engineering projects on bridges, this paper evaluates the safety of the roads and ancillary facilities of highway bridges involved in municipal road engineering projects. Based on a comprehensive analysis of the safety factors of municipal roads undercrossing existing bridges, a fuzzy comprehensive analytic hierarchy process (AHP) evaluation method for the influence of road construction on the safety of existing bridges is proposed. First, AHP is used to select 11 evaluation factors. Second, the target layer, criterion layer, and index layer of evaluation factors are established, then a safety evaluation factor system is formed. The three-scale AHP model is used to determine the weight of assessment indexes. Third, through the fuzzy comprehensive AHP evaluation model, the fuzzy hierarchical comprehensive evaluation is carried out for the safety assessment index system. Finally, the fuzzy comprehensive evaluation method is applied to the engineering example of a municipal road undercrossing an existing expressway bridge. The comprehensive safety evaluation of the existing bridge reflects the practicability and feasibility of the method. It is expected that, with further development, the method will improve the decision-making process in bridge safety assessment systems.

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