scholarly journals Fermatean fuzzy TOPSIS-based approach for occupational risk assessment in manufacturing

2021 ◽  
Author(s):  
Muhammet Gul ◽  
Huai-Wei Lo ◽  
Melih Yucesan
Keyword(s):  
Risk Assessment ◽  
Fuzzy Sets ◽  
Fuzzy Set ◽  
Business Processes ◽  
Occupational Injuries ◽  
Health And Safety ◽  
Fuzzy Topsis ◽  
Occupational Risk ◽  
Uncertain Information ◽  
Process Risk

AbstractThe importance of risk assessment in the context of occupational health and safety by manufacturing operators strengthens their hands in solving the problems they may encounter in business processes related to health and safety. One of the most important phases of conducting an exhaustive occupational risk assessment is to analyze potential hazards and associated risks quantitatively. Since manufacturing is one of the industries that require workers to be highly exposed to work, creating a safer environment to reduce occupational injuries is an important task. This study proposes a novel fuzzy risk assessment approach developed by integrating Fermatean fuzzy sets (FFSs) and technique for order preference by similarity to ideal solution (TOPSIS) method for ranking potential hazards in manufacturing. FFSs are a new version of fuzzy set theory that covers the intuitionistic fuzzy sets and Pythagorean fuzzy sets. This version of the fuzzy set is crucial in the decision-making process to handle uncertain information more easily and reflect uncertainty better. A linguistic scale under Fermatean fuzzy documentation has also been developed for experts/decision makers to disclose their judgments easily. Occupational risk analysts can benefit from this approach since FFSs are used for the first time in occupational risk assessment, and the approach is presented in integration with TOPSIS. The proposed approach is applied in the aluminum plate-manufacturing process risk assessment. In the conclusion of the implementation, risks arising in the production are prioritized. In addition, this study made comparisons with other fuzzy methods to demonstrate the proposed approach’s difference and practicality. This study’s results can support practitioners and risk analysts in formulating the improvement measures to increase the safety of the work environment further.

scholarly journals Evidence Theory in Picture Fuzzy Set Environment

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Harish Garg ◽  
R. Sujatha ◽  
D. Nagarajan ◽  
J. Kavikumar ◽  
Jeonghwan Gwak
Keyword(s):  
Fuzzy Sets ◽  
Fuzzy Set ◽  
Evidence Theory ◽  
Belief Function ◽  
Uncertain Information ◽  
Interval Probability ◽  
Dempster Shafer Theory ◽  
Effective Manner ◽  
Picture Fuzzy Set ◽  
Shafer Theory

Picture fuzzy set is the most widely used tool to handle the uncertainty with the account of three membership degrees, namely, positive, negative, and neutral such that their sum is bound up to 1. It is the generalization of the existing intuitionistic fuzzy and fuzzy sets. This paper studies the interval probability problems of the picture fuzzy sets and their belief structure. The belief function is a vital tool to represent the uncertain information in a more effective manner. On the other hand, the Dempster–Shafer theory (DST) is used to combine the independent sources of evidence with the low conflict. Keeping the advantages of these, in the present paper, we present the concept of the evidence theory for the picture fuzzy set environment using DST. Under this, we define the concept of interval probability distribution and discuss its properties. Finally, an illustrative example related to the decision-making process is employed to illustrate the application of the presented work.

scholarly journals Identyfication and Assessment of Occupational Hazards in the Working Environment of the Laser Cutter Operator

2020 ◽  
Vol 2 (1) ◽  
pp. 121-130
Author(s):  
Michal Palega ◽  
Marcin Krause
Keyword(s):  
Risk Factors ◽  
Risk Assessment ◽  
Research Methods ◽  
Risk Score ◽  
Preventive Measures ◽  
Health And Safety ◽  
Occupational Risk ◽  
Working Environment ◽  
Occupational Hazards ◽  
Score Method

AbstractThe purpose of this article was to identify occupational hazards at the laser cutter operator's workplace and to assess occupational risk. The article also indicates the basic requirements for the analyzed workplace. Research methods included: observation of the workplace (using a checklist), interviews with the employer, selected employees and a health and safety specialist, as well as analysis of the company's internal documents. The occupational risk assessment carried out at work using the Risk Score method showed that there are many different risk factors for accidents or diseases related to the work performed at the position of the laser cutter operator. However, thanks to the preventive measures applied, they are in the analyzed workplace at an acceptable (acceptable) level.

NOVEL ENTROPY MEASURE OF A FUZZY SET AND ITS APPLICATION TO MULTICRITERIA DECISION MAKING WITH FUZZY TOPSIS

2021 ◽  
Vol 16 (7) ◽  
Author(s):  
Manzoor Hussain
Keyword(s):  
Decision Making ◽  
Fuzzy Set ◽  
Daily Life ◽  
Multicriteria Decision Making ◽  
Fuzzy Topsis ◽  
Vital Role ◽  
Entropy Measure ◽  
Numerical Comparison ◽  
Uncertain Information ◽  
Multicriteria Decision

Fuzzy entropy is being used to measure the uncertainty with high precision and accuracy than classical crisp set theory. It plays a vital role in handling complex daily life problems involving uncertainty. In this manuscript, we first review several existing entropy measures and then propose novel entropy to measure the uncertainty of a fuzzy set. We also construct an axiomatic definition based on the proposed entropy measure. Numerical comparison analysis is carried out with existing entropies to show the reliability and practical applicability of our proposed entropy measure. Numerical results show that our suggested entropy is reasonable and appropriate in dealing with vague and uncertain information. Finally, we utilize our proposed entropy measure to construct fuzzy TOPSIS (Technique for Ordering Preference by Similarity to Ideal Solution) method to manage Multicriteria decision-making problems related to daily life settings. The final results demonstrate the practical effectiveness and applicability of our proposed entropy measure

scholarly journals Analusis and assessment of rish as a driver

2018 ◽  
Vol 19 (6) ◽  
pp. 239-243
Author(s):  
Dominika Siwiec ◽  
Karolina Czerwińska ◽  
Andrzej Pacana
Keyword(s):  
Risk Assessment ◽  
Occupational Health ◽  
Health And Safety ◽  
Occupational Health And Safety ◽  
Occupational Risk ◽  
Theoretical Part

The article analyzes and evaluates occupational risk as a brickyard driver. In the theoretical part, an attempt was made to determine the concept of occupational risk and the process of its evaluation was specified. Particular attention was paid to activities supporting the occupational risk assessment in the aspect of PN-N 18001 standard, the objective of which is to support appropriate management of occupational health and safety. In the practical part, occupational risk was assessed and assessed as a field brickyard driver and actions were proposed to reduce the level of occupational risk at the discussed workplace. Analysis and method of occupational risk assessment may be useful in any organization that wants to take care of its employees, and thus provide them with security at the position where they work.

scholarly journals Risk Assessment Using Fuzzy TOPSIS and PRAT for Sustainable Engineering Projects

2019 ◽  
Vol 11 (3) ◽  
pp. 615 ◽  
Author(s):  
G.K. Koulinas ◽  
O.E. Demesouka ◽  
P.K. Marhavilas ◽  
A.P. Vavatsikos ◽  
D.E. Koulouriotis
Keyword(s):  
Risk Assessment ◽  
Health And Safety ◽  
Real Data ◽  
Well Being ◽  
Fuzzy Topsis ◽  
Assessment Process ◽  
Sustainable Engineering ◽  
Social Sphere ◽  
Safety Risks ◽  
Risk Managers

In this study, we propose a safety risk assessment process using the fuzzy extension of the technique for order of preference by similarity to ideal solution (TOPSIS) for assigning priorities to risks in worksites, in order to promote the health, safety and well-being of workers, issues that are embedded within the concept of sustainability, specifically belonging to the social sphere of sustainability. The multicriteria method works in cooperation with a simple quantitative risk analysis and assessment process, the proportional risk assessment technique (PRAT), the functionality of which is based on real data. The efficiency of this approach is validated through treating a construction project example in Greece, and the results are compared with real fatal and non-fatal accidents data for the years 2014–2016. This integrated multicriteria approach can be used by risk managers as a tool for assessing safety risks and making informed decisions about the manner that a constraint budget would be spent in order to maximize health and safety in workplace.

scholarly journals Some Novel Cosine Similarity Measures Based on Complex Hesitant Fuzzy Sets and Their Applications

2021 ◽  
Vol 2021 ◽  
pp. 1-20
Author(s):  
Ronnason Chinram ◽  
Tahir Mahmood ◽  
Ubaid Ur Rehman ◽  
Zeeshan Ali ◽  
Aiyared Iampan
Keyword(s):  
Fuzzy Sets ◽  
Fuzzy Set ◽  
Similarity Measures ◽  
Cosine Function ◽  
Hesitant Fuzzy Set ◽  
Uncertain Information ◽  
Special Cases ◽  
Tangent Function ◽  
Polar Coordinate ◽  
Cosine Similarity Measures

The theory of complex hesitant fuzzy set (CHFS) is a modification technique of the complex fuzzy set (CFS) to cope with awkward and unreliable information’s in daily life issues. CHFS contains the grade of truth in the form of complex number, whose real and imaginary parts are in the form of the finite subset of the unit interval. CHFS is the mixture of hesitant fuzzy set (HFS) and CFS, which handles the complex and uncertain information in real-world issues which is compared with fuzzy sets and complex fuzzy sets. The positive membership in CHFS is in the form a polar coordinate belonging to unit disc in the complex plane. The aims of this manuscript are to explore some similarity measures (SMs), weighted SMs (WSMs) such as cosine SMs, weighted cosine SMs, SMs based on cosine function, WSMs based on cosine function, SMs based on tangent function, and WSMs based on tangent function of CHFS. Some special cases of the presented measures are discussed in detail. Moreover, we use our described SMs and weighted SMs of CHFS in the environment of medical diagnosis and pattern recognition to assess the practicality and competence of the described SMs. Finally, to find the validity and proficiency of the investigated measures based on CHFSs, the comparison between explored measures with some already defined measures and their graphical representations are also discussed in detail.

Some Score Functions on Fermatean Fuzzy Sets and Its Application to Bride Selection Based on TOPSIS Method

2021 ◽  
Vol 10 (3) ◽  
pp. 18-29
Author(s):  
Laxminarayan Sahoo
Keyword(s):  
Decision Making ◽  
Fuzzy Sets ◽  
Score Function ◽  
Fuzzy Topsis ◽  
Multi Criteria Decision Making ◽  
Uncertain Information ◽  
Topsis Method ◽  
Score Functions ◽  
Relative Closeness ◽  
Separation Measure

The aim of this paper is to propose some score functions for the fruitful ranking of fermatean fuzzy sets (FFSs) and fermatean fuzzy TOPSIS method based on proposed score functions. fermatean fuzzy sets proposed by Senapati and Yager can handle uncertain information more easily in the process of multi-criteria decision making (MCDM). In this paper, the authors have proposed three newly improved score functions for effective ranking of fermatean fuzzy sets. Here, they have applied the proposed score function to calculate the separation measure of each alternative from the positive and negative ideal solutions to determine the relative closeness coefficient. Based on different types of score functions, they have employed the TOPSIS method to solve the multi-criteria decision-making (MCDM) problem in which all preference information provided by the decision makers is expressed in terms of fermatean fuzzy decision matrices. Finally, a numerical example for selecting the bride form matrimonial site has been considered to illustrate the proposed method.

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