Decision analysis and methods
A. Lazar Farokhi
Abstract
Today, the use of risk assessment methods in various industries is expanding, as there are currently more than 70 different types of qualitative and quantitative risk assessment methods in the world. These methods are usually used to identify, control and mitigate the effects of hazards. Organizations ...
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Today, the use of risk assessment methods in various industries is expanding, as there are currently more than 70 different types of qualitative and quantitative risk assessment methods in the world. These methods are usually used to identify, control and mitigate the effects of hazards. Organizations should be able to select one or a combination of several types of risk assessment methods that are explored and studied in this article. In some cases, and for the direction of some sensitive processes, especially in the chemical industry, the production of explosive and combustion products such as the gas transmission company should be analyzed before determining the type of method of all methods and the best approach with regard to financial resources, requires qualitative or quantitative or qualitative and quantitative information, time limits, trained personnel limitations, the type of application of the risk identification method, the advantages, and disadvantages of each of these systems. Generally, acceptable risk levels are different for each organization or individual, depending on financial and economic resources, technological constraints, experienced human resources, discretion and management, and underlying risks such as hidden risks. Organizations usually require a system that, in addition to assessing their activities and processes can help them determine the risk situation, determine risk tolerance criteria, and accurately determine the exact risk of their processes, and ... lead them, depending on the complexity of the activity of each industry, the type of system that can bring them to the target. Is different. In this study, the assessment of the risks of gas Transmission facilities in the 9 regions, has been studied and reviewed. After identifying the various activities of the facility, which included three safety measures for equipment, personal and environmental health, and 28 sub-criteria, from previous studies and surveys, and staff comments. Then, using AHP, the fuzzy questionnaire was completed. Pairwise comparison of criteria and sub-criteria by experts and the use of excel software resulted in the weight of the sub-criteria and the compatibility rate. Then, using the verbal variables, five boost pressure facility with Fuzzy TOPSIS was ranked according to the relevant criteria, and the Rasht boost pressure gained the first rank.
Azad Abbasi
Abstract
In today's business landscape, the concept of the supply chain has gained significant prominence. An efficient supply chain is essential for guiding a business in an organized manner. This importance extends to supermarkets, where effective supply chain management necessitates improved communication ...
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In today's business landscape, the concept of the supply chain has gained significant prominence. An efficient supply chain is essential for guiding a business in an organized manner. This importance extends to supermarkets, where effective supply chain management necessitates improved communication with suppliers, customers, and internal management. Each facet of the supply chain plays a pivotal role in its own right. This study aims to investigate the crucial factors within the supermarket supply chain, drawing insights from existing literature and input from supply chain experts. The objective is to construct a framework that prioritizes these factors, considering each facet of the supply chain and arranging them from most to least critical. This research focuses on the analysis of a specific supermarket in Bangladesh, namely Save 'n' Safe, utilizing the FAHP methodology, a Multi-Criteria Decision-Making (MCDM) tool, to identify the most influential factors. The findings highlight that inventory management, internal information sharing, and accurate demand forecasting are the key determinants for Save 'n' Safe, a supermarket. Furthermore, the paper offers recommendations to enhance the current supply chain situation. The implications of this study extend not only to other supermarkets but also to various retail and grocery stores.
Decision analysis and methods
H. R. Seiti; A. Behnampour; D. M. Imani; M. Houshmand
Abstract
Failure Modes and Effects Analysis (FMEA) is being widely used to detect and eliminate known and/or potential failures, problems, errors and so on from system design, process, and/or service, before they reach the customer. It can be done by calculating the risk priority number which is the product of ...
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Failure Modes and Effects Analysis (FMEA) is being widely used to detect and eliminate known and/or potential failures, problems, errors and so on from system design, process, and/or service, before they reach the customer. It can be done by calculating the risk priority number which is the product of three factors: occurrence, severity and detectability. A lot of efforts have been made to overcome the shortcomings of the crisp RPN calculation and extend it to fuzzy environment. In this study, the presented fuzzy approach allows experts to describe the variables of risk priority number using linguistic terms by applying the method of fuzzy axiomatic design (FAD). At the final part of this paper a hypothetical case study demonstrated the applicability of the FMEA model under fuzzy environment.
S. Zamani; H. Farughi; M. Soolaki
Volume 2, Issue 4 , December 2013, , Pages 26-40
Abstract
In recent years, contractors play a major role in construction projects of buildings, roads, or waterworks under supervision of project owners or employers of these projects. So, that is why contractor selection is an important decision for employers. Contractor selection is a multicriterion decision ...
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In recent years, contractors play a major role in construction projects of buildings, roads, or waterworks under supervision of project owners or employers of these projects. So, that is why contractor selection is an important decision for employers. Contractor selection is a multicriterion decision problem and resolving the problem of evaluation and although ranking the candidate contractors has become a key factor for firms and enterprises. In this article, the proposed a new hybrid AHP and VIKOR methodology is applied to select the best contractor. Because of dealing with uncertain values for the criteria, fuzzy logic is used to solve this problem and the evaluation data for the alternatives have been expressed in linguistic terms. So, both AHP and VIKOR methods are performed under fuzzy environment. The fuzzy AHP is applied to form the structure of the contractor selection problem and also to obtain weights of the evaluation criteria, and fuzzy VIKOR method is used to determine final ranking. A numerical example is proposed to illustrate an application of the proposed method that demonstrates the effectiveness of the proposed model.