Papers by Mostafa Pouyakian
Nowadays, the vital role of risk management process in controlling hazards is evident. One of the... more Nowadays, the vital role of risk management process in controlling hazards is evident. One of the main goals of this process is sought to control hazards through risk control measures. It seems, however, that the vital problem of evaluating risk control measures has been less studied. As a result, from a pool of risk control measures some are chosen and implemented just mentally without any evaluation or theoretical background. This problem can be considered as a critical factor in the risk management process due to resource restrictions of an organization. Given the importance of the process of evaluating risk control measures and ignoring it in most risk management processes, we reviewed advantages and disadvantages of the classification and prioritizing patterns of control measures extracted from literature. A conceptual framework was also proposed to develop a practical and comprehensive method in the process of evaluating risk control measures. Ethical considerations were obser...
Journal of Occupational Hygiene Engineering
There is a need for a systematic approach to reduce the consequences of the coronavirus disease-2... more There is a need for a systematic approach to reduce the consequences of the coronavirus disease-2019 (Covid-19) outbreak. The most effective way to prevent this disease is to cut off the virus transmission chain. This study aimed to propose a systematic model for the management of the Covid-19 crisis based on the bow-tie analysis model and the concept of Layers of Protection Analysis from the perspective of safety engineering. In this model, five layers of defense have been introduced to reduce the patient's referral to the hospitals and effectively manage the disease transmission chain. In addition to maintaining the health of citizens, the implementation of this model will improve the health of healthcare workers by reducing the burden of patient admission to hospitals.
International Journal of Occupational Safety and Ergonomics
In this study, a Fuzzy Bayesian network (FBN) approach was proposed to analyze the domino effects... more In this study, a Fuzzy Bayesian network (FBN) approach was proposed to analyze the domino effects of pool fire in storage tanks. Failure probabilities were calculated using triangular fuzzy numbers, the combined Center of area (CoA)/Sum-Product method, and the BN approach. Consequence modeling, probit equations, and Leaky-Noisy OR (L-NOR) gates were used to analyze the domino effects, and modify conditional probability tables (CPTs). Methanol storage tanks were selected to confirm the practical feasibility of the suggested method. Then the domino probability using bow-tie analysis (BTA), and FBN in the first and second levels was compared, and the Ratio of Variation (RoV) was used for sensitivity analysis. The probability of the domino effect in the first and second levels (FBN) was 0.0071472631 and 0.0090630640, respectively. The results confirm that this method is a suitable tool for analyzing the domino effects and using FBN and L-NOR gate is a good way for assessing the reliability of tanks.
Frontiers in Public Health
Various subdisciplines of ergonomics science have emerged during the past decades as our insight ... more Various subdisciplines of ergonomics science have emerged during the past decades as our insight has been broadened of human and performance. The three main branches of ergonomics have evolved over time focusing on the physical, cognitive, and organizational aspects. But the question is, can these disciplines focus and research enough on the ergonomic aspects of cyberspace and Industry 4.0 technologies? Cyber-technologies of the Fourth Industrial revolution are dramatically imposing themselves on our life and work. This has been led to emerging cyber-aspects for human work and life. Hence, many sciences, mainly applied ones, have upgraded to their cyber versions to deal with the emergent issues, usually with a new name, including the cyber prefix. Cyber-medicine, cyber-health, cyber-commerce, and cyberpsychology are some examples. Also, ergonomics requires a similar look. Ergonomic benefits and threats of Industry 4.0 technologies must be considered in an integrated manner. This pap...
Background and Aims: The extent of fire incidents in commercial complexes has increased the impor... more Background and Aims: The extent of fire incidents in commercial complexes has increased the importance of assessing their fire safety status. The American National Fire Protection Association has provided CFSES software for assessing the fire safety of integrated complexes. However, the applicability of this software to assess the safety of commercial fireplaces in Iran should be measured in accordance with national regulations and laws.Materials and Methods: In the first phase, the applicability of CFSES software to assess the fire safety in commercial complexes in Iran was carefully examined. In the second phase, the fire safety rules applicable to the commercial complexes of Iran were identified and listed quantitatively and qualitatively. In the third phase, by comparing the software and the content of the rules, software compliance with national standards was assessed. All stages of the study were conducted in accordance with ethical standards.Results: The rules cover all of th...
International Journal of Critical Infrastructures
SSRN Electronic Journal, 2022
Iran Occupational Health Journal, 2021
Iran Occupational Health http://ioh.iums.ac.ir Iran Occupational Health. 2020 (4 Apr);17:1. Origi... more Iran Occupational Health http://ioh.iums.ac.ir Iran Occupational Health. 2020 (4 Apr);17:1. Original Article Lighting and color temperature assessment in the office workplaces and relationship to visual fatigue Rostam Golmohammadi, (*Corresponding author), Professor, Department of Occupational Health, School of Health and Center for Health Sciences Research, Hamedan University of Medical Sciences, Hamedan, Iran. [email protected] Zahra Pirmoradi, MSc, Department of Occupational Hygiene, School of Health, Hamadan University of Medical Sciences, Hamadan, Iran Majid Motamedzadeh Torghabeh, Professor, Department of Ergonomics, School of Health, Hamadan University of Medical Sciences, Hamadan, Iran Javad Fardmal, Professor, Associate Professor, Department of Biostatistics, School of Health, Hamadan University of Medical Sciences, Hamadan, Iran
Occupational Hygiene and Health Promotion, 2021
Introduction: Each year, many accidents occur in processing industries such as oil, gas, and petr... more Introduction: Each year, many accidents occur in processing industries such as oil, gas, and petrochemicals. Processing industries mostly work with hazardous chemicals and units in high temperature and high-pressure conditions like reactors and storage tanks. The study aimed to model the consequences of a complete tank rapture (explosion and fire) and specify the intensity caused by the events. Materials and methods: The applied method in this study was based on the Quantitative Risk Assessment method. This method is used for risk assessment in chemical, petroleum, gas, and petrochemical processes and transport industries. Initially, the process associated with the monomer vinyl-chloride storage tank was identified. At the next stage, the scenarios and probable hazards were identified and defined and the PHAST Risk 7.11 was run for modeling the consequences. Results: The most dangerous consequences of vinyl-chloride storage tanks include sudden fire and explosion in a complete tank ...
International Journal of Occupational Hygiene, 2020
Background: William Fine's method is one of risk assessment that has a cost justification ind... more Background: William Fine's method is one of risk assessment that has a cost justification index for the control measures. Therefore, in this study, we examined how to use this method in risk assessment studies in Iran. The present study aims at providing a better understanding of the benefits and limitations of this method and to provide a platform for improving the cost factor table in this method. Methods: In this study, based on PRISMA, scientific articles were searched from databases. The purpose of the study was to evaluate the risk using the William Fine's method, so general keywords including safety, risk assessment, William Fine were searched in Persian databases and their English equivalents in English databases. The results were analyzed qualitatively. Results: A total of 357 related articles, finally 30 qualified studies were included in the systematic review process. Investigation of studies showed that in many of them, the cost justification index of control mea...
زمینه و اهداف : بروز متعدد حوادث حریق در مجتمعهای تجاری، اهمیت ارزیابی وضعیت ایمنی حریق آنها را ... more زمینه و اهداف : بروز متعدد حوادث حریق در مجتمعهای تجاری، اهمیت ارزیابی وضعیت ایمنی حریق آنها را بیش از پیش نموده است. انجمن ملی حفاظت از حریق آمریکا، نرمافزار CFSES را جهت ارزیابی ریسک ایمنی حریق مجتمعها ارائه کرده است. لیکن قابلیت کاربرد این نرمافزار برای ارزیابی ریسک ایمنی حریق مجتمعهای تجاری در ایران باید با توجه به مقررات و قوانین ملی سنجش گردد. مواد و روشها: در فاز اول، قابلیت کاربرد نرمافزار CFSES جهت ارزیابی ریسک ایمنی حریق مجتمعهای تجاری در ایران به دقت بررسی گردید. فاز دوم، قوانین ایمنی حریق قابل کاربرد در مجتمعهای تجاری ایران شناسایی و به لحاظ کمی و کیفی فهرستبندی و در فاز سوم با مقایسه نرمافزار و محتوای قوانین، انطباق نرمافزار با قوانین ملی ارزیابی گردید. تمامی مراحل مطالعه حاضر طبق موازین اخلاقی اجرا گردید. یافتهها: قوانین موجود در مجموع تمامی 12پارامتر مورد ارزیابی در نرمافزارCFSES را پوشش میدهد. نرمافزار پارامترهای جمعیت نیروی انسانی، نوع فعالیت، وضعیت ایمنی برق و پسماند، تعمیرات، نگهداری و وجود تجهیزات اطفا غیر از آبفشانها را مورد ملاحظه قرار نمید...
Journal of Medical Education and Development, 2020
Introduction: Holding classes based on a university-set date is a form of discipline and complian... more Introduction: Holding classes based on a university-set date is a form of discipline and compliance with educational regulations. But what we currently observe is one or more weeks of delay in starting the semester. This study aimed to determine the causes of irregularities at the beginning of each semester in medical universities from the viewpoint of faculty members. Methods: This cross-sectional descriptive study was conducted in 2016, using the available sampling method on 59 faculty members of three Universities of Medical Sciences (Babol, Shahid Beheshti and Iran). The research tool was a 22-item questionnaire consisting of four sections on factors affecting irregularities. The validity of the research tool was confirmed by six faculty members and its reliability was confirmed by the test-retest method (r = 0.82). Result: The majority of faculty members participating in the study were male (34 people), most of them were assistant professors (23 people) with the average work ex...
Journal of Loss Prevention in the Process Industries, 2018
The index-based approach is one of the most popular ways to measure the inherent safety degree of... more The index-based approach is one of the most popular ways to measure the inherent safety degree of a chemical route or process during the early design stages. One of the main shortcomings of current indices is the limited set of aspects which are considered and are influencing inherent safety. In addition, the minimal knowledge of process designers regarding inherent safety hazards can exacerbate this problem. In this study, we identify the inherent safety indicators (within the period 1990-2017) used to measure the inherent safety degree of a process, and describe existing approaches to estimate these indicators. Bibliographic sites, including the Web of Science, ScienceDirect, Springer, ACS publications and Online Library, were searched based on various search strategies. A total of 62 resources were selected, and 35 indicators were found that were classified into six categories: (i) the 'chemical and physical properties of a chemical substance (11 indicators); (ii) the 'process conditions' (5 indicators); (iii) the 'equipment' (5 indicators); (iv) the 'reaction/decomposition properties' (3 indicators); (v) the 'activities and operations characteristics' (4 indicators); and (vi) the 'consequences' (7 indicators). We also found six estimation approaches, including the relative rating, an advanced mathematical approach (statistical, numerical descriptive and fuzziness), the riskbased, graphical, equational (or formula) based approach and the hybrid approach. This study can provide a quick guide for non-experienced researchers being enthusiast to work on inherent safety measurements using an index-based approach.
Traffic Injury Prevention, 2016
ABSTRACT Objective: Lane departure, caused by inattention, distraction, drowsiness, or any unusua... more ABSTRACT Objective: Lane departure, caused by inattention, distraction, drowsiness, or any unusual driver behavior, is a typical risk threatening the driver as well as other road users. Accurate perception of such situations through effective warnings would help drivers to avoid serious consequences. With regard to critical functions of warning symbols for risk communication, the present study focused on providing effective and easily perceivable symbols, compatible with human cognitive capabilities. Thus, the main purpose of the present study was to design and cognitively appraise 6 newly designed dynamic symbols, candidates for a new type of lane departure warning system. Methods: Simplicity, familiarity, concreteness, meaningfulness, and semantic closeness were the major assessment criteria, defining cognitive features by the earlier researchers in the field. A total number of 187 driving license applicants, with a mean age of 20.58 years (SD = 3.20), participated in the present survey. The participants rated cognitive features of the 6 dynamic symbols along a 0–100 scale. Results: Significant main effect of the element factor type of the designed symbols on rating cognitive features revealed that the existence of car element was the best predictor for illustrating lane departure. The interaction of both element factor and location of element factor significantly affected the ratings. However, the location of element factor did not solely have any strong effect on the ratings. The results also demonstrated that semantic closeness received the highest overall mean score across symbols (M = 61.80), especially within the symbols that include the car element (M = 75.67). Moreover, a significant difference was observed between the average ratings of the cognitive features, despite the fact that a significant correlation was found between cognitive features. Conclusion: The most considerable result of the current study was the match between the symbol with the highest ratings and the International Organization for Standardization (ISO)-related icon in appearance. Because previous studies demonstrated a strong correlation between comprehension scores of the symbol and both semantic closeness and meaningfulness, high-level comprehensibility of the best ranked symbol is expected.
Multitemas, Mar 30, 2015
Thermal stress in many industries, including iron and steel industries is a serious risk to the h... more Thermal stress in many industries, including iron and steel industries is a serious risk to the health and safety of workers. Evaluation of Thermal stress not only for prevention of diseases caused by exposure to heat, but it is also important in terms of performance and safety of workers at work. Indices that are used to evaluate heat stress are abundant and selection of an appropriate indicator for a wide range of weather conditions is difficult. The purpose of this study is to provide an optimal index based on physiological parameters in rolling industry. This study was conducted in rolling industry in Garmsar and 90 male workers were entered the study. Simultaneously by measurement of physiological parameters, the needed parameters to atmospheric conditions to calculate the wet- bulb globe temperature (WBGT), the amount of required sweat rate (SWreq), discomfort index (DI) and four-hour sweat rate (P4SR) were measured. In this study, the physiological parameters of core temperature, (tympanic temperature) has the most relationship and correlation with the DI index (R = 0.98) and the least Relationship and correlation with P4SR index (R=0.44). Also In this study the physiological parameters of heart rate with has the most relationship and correlation with the P4SR index(R=0.55) and the least Relationship and correlation with DI index. Which is optimal to determine psychological P4SR parameter of heart rate. Also, it was found in this study, to determine P4SR index, diastolic blood pressure has the highest correlation (0.8) and WBGT is the slightest correlation. In the end, it should be mentioned that respiratory physiological parameters has the most correlation with WBGT index (0.39) and the least correlation with P4SR index (0.07). current study showed that WBGT index indicates a more accurate assessment of heat stress in employees of rolling industry and core temperature has significant relationship with heat stress indices
Journal of Ergonomics, Sep 15, 2013
Introduction: Lack of attention to the ergonomic measures and standards in making PowerPoint slid... more Introduction: Lack of attention to the ergonomic measures and standards in making PowerPoint slides can result in visual fatigue, less attention to the content of the lecture and lower quality of training. This study aimed to identify the most popular Persian fonts and font sizes used by students in making PowerPoint slides and to investigate the students' subjective perception of the three features of legibility, formality and attractiveness of these fonts. Materials and Methods: At first, five most widely used Persian fonts in providing PowerPoint slides were identified in 84 students from Tehran University of Welfare and Rehabilitation Sciences. Then, ten slides were prepared containing simple and familiar sentences based on the five popular fonts and two Different font sizes (24 and 28). Afterwards.40 college students evaluated the eligibility, formality and attractiveness of the fonts and font sizes used in each slide by a seven-item Likert scale. Results: One-way ANOVA Revealed significant differences between the students' subjective perception of legibility, formality and attractiveness of the fonts used in the slides. In terms of eligibility and attractiveness, slide 10 (B Titr, 28) was top rated and slide 4 (lotus, 24) was ranked as lowest by the participants. In terms of eligibility and attractiveness, slide 10 (B Titr, 28) was top rated and slide 4 (lotus, 24) was ranked as lowest by the participants. Conclusion: This study explored the effects of anatomical characteristics of the B Nazanin, B Titr and Lotus Persian fonts on the Students' perception of legibility, formality and attractiveness. The findings suggested that the type of Selected font in PowerPoint slide design could influence the viewers' perceptual features of legibility, attractiveness and formality. Thus, disregarding the ergonomic aspects of selected Persian fonts may deteriorate the quality of training. Further studies are needed to examine the ergonomics aspects of wider types of Persian fonts in broader sample sizes.
Salāmat-i kār-i Īrān, 2020
Background and aims: International Labor Organization (ILO) 2015 report shows that about 40% of t... more Background and aims: International Labor Organization (ILO) 2015 report shows that about 40% of the all total compensation for work-related diseases and accidents in the world is due to musculoskeletal disorders. According to UK Health and Safety Executive (2019) 41% of all registered Work related Musculoskeletal Disorders (WMSDs) are due to upper limbs. Barr et al. (2004) reported that most absence from work in the United States was due to musculoskeletal injuries to the hand and wrist. Hand, arm, and forearm are most important limbs of human body to work. Hand tools, especially non-powered hand tools, are responsible for a significant portion of damages. Many different types of hand tools are used in industrial, services, and domestic activities including wrenches, pliers, screwdrivers, clamps, snips, saws, etc. The use of hand tools is accompanied by repetitive movements and previous studies have shown that inappropriate design of hand tool can damage human joints, tendons and mu...
Traffic Injury Prevention, 2013
Safety and Health at Work, 2018
Background: Increasing the establishment of integrated management systems (IMSs) is done with the... more Background: Increasing the establishment of integrated management systems (IMSs) is done with the purpose of leaving traditional management methods and replacing them with modern management methods. Thus, the present study sought to analyze the events and investigate the impact of IMS on health and safety performance indices in an Iranian combined cycle power plants. Methods: This case study was conducted in 2012 in all units of the Yazd Combined Cycle Power Plant on accident victims before and after the implementation of IMS. For data analysis and prediction of indices after the implementation of IMS, descriptive statistics and KolmogoroveSmirnov test, Chi-square, linear regression, and Cubic tests were conducted using SPSS software. Results: The number of people employed in the power plant in an 8-year period (2004e2011) was 1,189, and 287 cases of work-related accidents were recorded. The highest accident frequency rate and accident severity rate were in 2004 (32.65) and 2008 (209), respectively. Safe T-score reached to below À3 during 2010e2011. In addition, given the regression results, the relation between all predictor variables with outcomes was significant (p < 0.05), except for the variable X 1 belonging to the accident severity rate index. Conclusion: The implementation of safety programs especially that of IMS and its annual audits has had a significant impact on reducing accident indices and improving safety within the study period. Accordingly, health and safety management systems are appropriate tools for reducing accident rate, and the use of regression models and accident indices is also a suitable way for monitoring safety performance.
Patient safety is a basic principle of health care, and the purpose of the patient safety culture... more Patient safety is a basic principle of health care, and the purpose of the patient safety culture is to provide safe conditions for the care of patients. The present study aimed to evaluate the patient safety culture in the clinics and hospitals of Chabahar, Iran. Materials and Methods: This cross-sectional study was conducted on three groups of physicians, nurses, and paraclinical staff in 2017. Data were collected by using the hospital survey on patient safety culture (HSOPS). Data analysis was performed in SPSS version 21 using descriptive statistics, ANOVA, and Tukey's post-hoc test. Results: In total, 255.85 subjects were enrolled in the study and equally divided into three groups (33.3%). The minimum and maximum work experience was one and 27 years, respectively. Among the participants, 116 cases (45.49%) were female, and 139 cases (54.50%) were male. Mean total score of the patient safety culture was 149.87±25.20. The lowest and highest scores were observed in the dimensions of 'non-punitive response to errors' (3.23±9.11) and 'teamwork within units' (3.86±15.41), respectively. The results indicated a significant difference between the three study groups in terms of the patient safety culture (P<0.001). However, mean score of the general perception of the safety culture had no significant difference between the physicians and nurses (P=0.064). Conclusion: Findings of the present study could help justify the establishment of a positive patient safety culture in the healthcare systems. In addition, recruitment of capable managers, who are committed to eliminating medical errors, is required for implementing the patient safety culture. Therefore, it is recommended that interventions in the field of the patient safety culture be planned and the association of patient safety and clinical outcomes be assessed in further investigations.
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Papers by Mostafa Pouyakian