Pub Date : 2011-09-01DOI: 10.1080/10170669.2011.614642
Chuan-li Zhao, Jia-yuarn Guo, Chou-Jung Hsu
This article explores the parallel-machine scheduling problems in which the processing time of a job is a linear function of its starting time and the job-independent deterioration rates are identical for all jobs. We implemented a rate-modifying activity to change the processing time of the jobs that followed this activity on each machine. Therefore, the actual processing time of a job varied given that it depended not only on its starting time but also on whether it was scheduled before or after the rate-modifying activity. Hence, the objective of this study was to determine the job sequence on each machine and the position of rate-modifying activity on each machine so that the total completion time was minimized. We showed that the problem could be solved in polynomial time when the number of machines was fixed.
{"title":"Parallel-machine scheduling with deteriorating jobs and rate-modifying activities to minimize total completion time","authors":"Chuan-li Zhao, Jia-yuarn Guo, Chou-Jung Hsu","doi":"10.1080/10170669.2011.614642","DOIUrl":"https://doi.org/10.1080/10170669.2011.614642","url":null,"abstract":"This article explores the parallel-machine scheduling problems in which the processing time of a job is a linear function of its starting time and the job-independent deterioration rates are identical for all jobs. We implemented a rate-modifying activity to change the processing time of the jobs that followed this activity on each machine. Therefore, the actual processing time of a job varied given that it depended not only on its starting time but also on whether it was scheduled before or after the rate-modifying activity. Hence, the objective of this study was to determine the job sequence on each machine and the position of rate-modifying activity on each machine so that the total completion time was minimized. We showed that the problem could be solved in polynomial time when the number of machines was fixed.","PeriodicalId":369256,"journal":{"name":"Journal of The Chinese Institute of Industrial Engineers","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129560550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-09-01DOI: 10.1080/10170669.2011.610365
Min-Sheng Chen, Tzu-Chang Wang, Chih-Nan Wang
The purpose of this study was to examine the effects of mental abacus training on children's working memory. To accomplish this, the role played by the visuo-spatial sketchpad and phonological loop with regard to the working memory task in three experiments, and three distraction tasks were manipulated to investigate it. The results of experiments 1–3 suggest that training to perform mental arithmetic calculations and digit span enhances participants’ ability to retain visuo-spatial and phonological loop information. Additionally, children who had not received mental abacus training depended on the phonological loop to retain numerical information. We speculate that these children may execute mental calculations using their visuo-spatial sketchpad to form mental imagery. These findings demonstrate that mental abacus training may improve basic cognitive capacities and possess utility for learning and education.
{"title":"Effect of mental abacus training on working memory for children","authors":"Min-Sheng Chen, Tzu-Chang Wang, Chih-Nan Wang","doi":"10.1080/10170669.2011.610365","DOIUrl":"https://doi.org/10.1080/10170669.2011.610365","url":null,"abstract":"The purpose of this study was to examine the effects of mental abacus training on children's working memory. To accomplish this, the role played by the visuo-spatial sketchpad and phonological loop with regard to the working memory task in three experiments, and three distraction tasks were manipulated to investigate it. The results of experiments 1–3 suggest that training to perform mental arithmetic calculations and digit span enhances participants’ ability to retain visuo-spatial and phonological loop information. Additionally, children who had not received mental abacus training depended on the phonological loop to retain numerical information. We speculate that these children may execute mental calculations using their visuo-spatial sketchpad to form mental imagery. These findings demonstrate that mental abacus training may improve basic cognitive capacities and possess utility for learning and education.","PeriodicalId":369256,"journal":{"name":"Journal of The Chinese Institute of Industrial Engineers","volume":"363 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131646589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-09-01DOI: 10.1080/10170669.2011.591843
Dong-Yuh Yang, Kuo-Hsiung Wang, W. Pearn
This article analyzes an M/G/1 queueing system with second optional service, server breakdowns, and general start-up times under (N, p)-policy. Customers arrive into the system according to a Poisson process. Service times, repair times, and start-up times are assumed to be generally distributed. The first service is essential for all arrived customers, and the second service is optional, which is demanded by some customers after their essential service is completed. For this queuing system, the expected cost function per unit time is constructed to search the joint optimum threshold values of the (N, p) at the minimum cost. We also obtain the explicit closed-form expression of the optimal solutions. A sensitivity analysis is performed to evaluate the impacts on the optimum threshold value. Finally, numerical results are presented for several cases.
{"title":"Optimization on (N, p)-policy for an unreliable queue with second optional service and start-up","authors":"Dong-Yuh Yang, Kuo-Hsiung Wang, W. Pearn","doi":"10.1080/10170669.2011.591843","DOIUrl":"https://doi.org/10.1080/10170669.2011.591843","url":null,"abstract":"This article analyzes an M/G/1 queueing system with second optional service, server breakdowns, and general start-up times under (N, p)-policy. Customers arrive into the system according to a Poisson process. Service times, repair times, and start-up times are assumed to be generally distributed. The first service is essential for all arrived customers, and the second service is optional, which is demanded by some customers after their essential service is completed. For this queuing system, the expected cost function per unit time is constructed to search the joint optimum threshold values of the (N, p) at the minimum cost. We also obtain the explicit closed-form expression of the optimal solutions. A sensitivity analysis is performed to evaluate the impacts on the optimum threshold value. Finally, numerical results are presented for several cases.","PeriodicalId":369256,"journal":{"name":"Journal of The Chinese Institute of Industrial Engineers","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130109832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-09-01DOI: 10.1080/10170669.2011.610366
Yen-Hui Lin, H. Liao, Shu-fang Cheng, Lien-Hsiung Lee
This study analyzed occupational accidents involving overseas blue-collar workers in Taiwan. In total, 6392 work-related accident reports were filed from 2001 to 2008. These reports were acquired from the worker compensation insurance database of the Bureau of Labor Insurance (BLI), Taiwan. The BLI data reveal that Thai workers accounted for 70% of all occupational accidents, and roughly 77.4% of these accidents involved workers aged ≤34 years. Moreover, most occupational accidents involved either companies with <30 workers or with 100–299 workers. The leading injury cause was caught in machinery (74.5%). The incidence of accidents involving foreign blue-collar workers differed according to worker sex, with male workers involved in significantly more occupational accidents than female workers during the period analyzed. The findings that worker sex, nationality, age, and company size are significantly correlated with occupational accident incidence has important implications for occupational safety and will likely prove useful when designing effective accident-prevention programs.
{"title":"Occupational fatality and injury risks for overseas blue-collar workers in Taiwan","authors":"Yen-Hui Lin, H. Liao, Shu-fang Cheng, Lien-Hsiung Lee","doi":"10.1080/10170669.2011.610366","DOIUrl":"https://doi.org/10.1080/10170669.2011.610366","url":null,"abstract":"This study analyzed occupational accidents involving overseas blue-collar workers in Taiwan. In total, 6392 work-related accident reports were filed from 2001 to 2008. These reports were acquired from the worker compensation insurance database of the Bureau of Labor Insurance (BLI), Taiwan. The BLI data reveal that Thai workers accounted for 70% of all occupational accidents, and roughly 77.4% of these accidents involved workers aged ≤34 years. Moreover, most occupational accidents involved either companies with <30 workers or with 100–299 workers. The leading injury cause was caught in machinery (74.5%). The incidence of accidents involving foreign blue-collar workers differed according to worker sex, with male workers involved in significantly more occupational accidents than female workers during the period analyzed. The findings that worker sex, nationality, age, and company size are significantly correlated with occupational accident incidence has important implications for occupational safety and will likely prove useful when designing effective accident-prevention programs.","PeriodicalId":369256,"journal":{"name":"Journal of The Chinese Institute of Industrial Engineers","volume":"7 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133439339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-09-01DOI: 10.1080/10170669.2011.613953
H. Lai, Ting-Yu Chen
Because of the importance of reducing risks in a high-tech corporation, decision makers need a useful method to help them find the alternative with the lowest risk from a given set. In particular, in an uncertain and complex situation, making a choice becomes more difficult for decision makers. In this article, we analyzed the risks of a particular decision in linguistic terms and based on interval-valued fuzzy numbers (IVFNs). We also extended a similarity measure in the technique for order preference based on similarity to the ideal solution (TOPSIS) approach by measuring the similarity of each alternative to positive and negative ideal IVFNs. Rather than calculating the distance between the alternatives and the positive/negative ideal solution in the TOPSIS method, we used the similarity measure between IVFNs to replace distance in this approach. Even with the same distance between IVFNs, the measure may have different shapes or directions, which may lead to nonintuitive results. In the proposed method, we used a fixed ideal solution that could simplify the calculations of a similarity measure between IVFNs. We also applied the similarity measure between IVFNs to the decision-making process to increase the ability of the process to account for risks in a variable, complex, and uncertain environment.
{"title":"A fuzzy risk-assessment method using a TOPSIS approach based on interval-valued fuzzy numbers","authors":"H. Lai, Ting-Yu Chen","doi":"10.1080/10170669.2011.613953","DOIUrl":"https://doi.org/10.1080/10170669.2011.613953","url":null,"abstract":"Because of the importance of reducing risks in a high-tech corporation, decision makers need a useful method to help them find the alternative with the lowest risk from a given set. In particular, in an uncertain and complex situation, making a choice becomes more difficult for decision makers. In this article, we analyzed the risks of a particular decision in linguistic terms and based on interval-valued fuzzy numbers (IVFNs). We also extended a similarity measure in the technique for order preference based on similarity to the ideal solution (TOPSIS) approach by measuring the similarity of each alternative to positive and negative ideal IVFNs. Rather than calculating the distance between the alternatives and the positive/negative ideal solution in the TOPSIS method, we used the similarity measure between IVFNs to replace distance in this approach. Even with the same distance between IVFNs, the measure may have different shapes or directions, which may lead to nonintuitive results. In the proposed method, we used a fixed ideal solution that could simplify the calculations of a similarity measure between IVFNs. We also applied the similarity measure between IVFNs to the decision-making process to increase the ability of the process to account for risks in a variable, complex, and uncertain environment.","PeriodicalId":369256,"journal":{"name":"Journal of The Chinese Institute of Industrial Engineers","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130819648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-09-01DOI: 10.1080/10170669.2011.599432
Jia‐Yen Huang, Po-Chien Tsai
Daily meal boxes are perishable goods which, if not sold within their limited lifetimes, will be discarded. Convenience stores generally make their order decisions according to point of sale (POS) analysis. However, due to the effects of uncertain factors, such as the weather, temperature, the number of customers, and promotion activity of substitute products, the order quantity based on POS may not actually match with real demand, especially for perishable items. In this study, a novel warning system is established by employing the support vector machine (SVM) to modify the order quantity; and the Taguchi method is applied to determine the optimal portfolio of the factors that may influence the prediction accuracy of the SVM. Using actual data from a convenience store, which is a part of the President Chain Store Corporation in Taiwan, the prediction accuracy of the warning system was evaluated. Through numerical experiments, that the proposed methodology can significantly raise the profit is confirmed.
{"title":"Determination of order quantity for perishable products by using the support vector machine","authors":"Jia‐Yen Huang, Po-Chien Tsai","doi":"10.1080/10170669.2011.599432","DOIUrl":"https://doi.org/10.1080/10170669.2011.599432","url":null,"abstract":"Daily meal boxes are perishable goods which, if not sold within their limited lifetimes, will be discarded. Convenience stores generally make their order decisions according to point of sale (POS) analysis. However, due to the effects of uncertain factors, such as the weather, temperature, the number of customers, and promotion activity of substitute products, the order quantity based on POS may not actually match with real demand, especially for perishable items. In this study, a novel warning system is established by employing the support vector machine (SVM) to modify the order quantity; and the Taguchi method is applied to determine the optimal portfolio of the factors that may influence the prediction accuracy of the SVM. Using actual data from a convenience store, which is a part of the President Chain Store Corporation in Taiwan, the prediction accuracy of the warning system was evaluated. Through numerical experiments, that the proposed methodology can significantly raise the profit is confirmed.","PeriodicalId":369256,"journal":{"name":"Journal of The Chinese Institute of Industrial Engineers","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131695153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-07-01DOI: 10.1080/10170669.2011.579708
Chun-Chen Huang, John Yuan
This study proposes a general maintenance policy for a system whose deterioration process is in a Gamma process. Such systems under scheduled inspection will be modeled by a multi-state Markov system with time-dependent transition probabilities. Such a policy is mainly to determine, at each inspection time nd, the optimal maintenance action from multiple candidates under the conditions that: (1) the transition probabilities and the risks of each maintenance action are updated at each nd, (2) both the times spent on inspection and maintenance are ignored, etc. Finally, a numerical example is presented through simulation to illustrate how such a policy can be carried out.
{"title":"A general maintenance policy for a multi-state deterioration system with multiple choices of imperfect maintenances","authors":"Chun-Chen Huang, John Yuan","doi":"10.1080/10170669.2011.579708","DOIUrl":"https://doi.org/10.1080/10170669.2011.579708","url":null,"abstract":"This study proposes a general maintenance policy for a system whose deterioration process is in a Gamma process. Such systems under scheduled inspection will be modeled by a multi-state Markov system with time-dependent transition probabilities. Such a policy is mainly to determine, at each inspection time nd, the optimal maintenance action from multiple candidates under the conditions that: (1) the transition probabilities and the risks of each maintenance action are updated at each nd, (2) both the times spent on inspection and maintenance are ignored, etc. Finally, a numerical example is presented through simulation to illustrate how such a policy can be carried out.","PeriodicalId":369256,"journal":{"name":"Journal of The Chinese Institute of Industrial Engineers","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127094722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-07-01DOI: 10.1080/10170669.2011.599431
Shengli Lv, Jingbo Li, Dequan Yue
We consider the machine repair system in which K identical unreliable machines are maintained by N servers. Each server is subject to breakdown even if no failed machines are in the system. There are c reliable repairmen in the system to repair the breakdown servers. Failure and service times of the machines, and breakdown and repair times of the servers, are assumed to follow a negative exponential distribution. Each unreliable server has different breakdown rates in its busy times and idle times. The system performance measures are obtained by a matrix geometric method. Some important relationships between the system performance measures are given. An optimization model is developed for the optimum numbers of servers and repairmen to minimize the expected total cost of the system. A numerical example is given for illustration.
{"title":"Uunreliable multi-server machine repairable system with variable breakdown rates","authors":"Shengli Lv, Jingbo Li, Dequan Yue","doi":"10.1080/10170669.2011.599431","DOIUrl":"https://doi.org/10.1080/10170669.2011.599431","url":null,"abstract":"We consider the machine repair system in which K identical unreliable machines are maintained by N servers. Each server is subject to breakdown even if no failed machines are in the system. There are c reliable repairmen in the system to repair the breakdown servers. Failure and service times of the machines, and breakdown and repair times of the servers, are assumed to follow a negative exponential distribution. Each unreliable server has different breakdown rates in its busy times and idle times. The system performance measures are obtained by a matrix geometric method. Some important relationships between the system performance measures are given. An optimization model is developed for the optimum numbers of servers and repairmen to minimize the expected total cost of the system. A numerical example is given for illustration.","PeriodicalId":369256,"journal":{"name":"Journal of The Chinese Institute of Industrial Engineers","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125934466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-07-01DOI: 10.1080/10170669.2011.580468
Wei-Yang Chen, Gwo-Ji Sheen
This study investigates a single-machine scheduling problem with release times. The objective is to minimize the summation of the weighted earliness and tardiness, subject to the number of tardy jobs. The given n jobs with different earliness and tardiness weights have different release times but the same due date. An algorithm is proposed to efficiently generate Pareto-optimal solutions for any possible number of tardy jobs. The accuracy and run time of our algorithm are discussed. In addition, the results show that the proposed algorithm can eliminate most nodes in the branching tree to efficiently find solutions.
{"title":"A Pareto-optimal solution procedure for the single-machine scheduling problem with release time and multiple performance measures","authors":"Wei-Yang Chen, Gwo-Ji Sheen","doi":"10.1080/10170669.2011.580468","DOIUrl":"https://doi.org/10.1080/10170669.2011.580468","url":null,"abstract":"This study investigates a single-machine scheduling problem with release times. The objective is to minimize the summation of the weighted earliness and tardiness, subject to the number of tardy jobs. The given n jobs with different earliness and tardiness weights have different release times but the same due date. An algorithm is proposed to efficiently generate Pareto-optimal solutions for any possible number of tardy jobs. The accuracy and run time of our algorithm are discussed. In addition, the results show that the proposed algorithm can eliminate most nodes in the branching tree to efficiently find solutions.","PeriodicalId":369256,"journal":{"name":"Journal of The Chinese Institute of Industrial Engineers","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130814764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study investigated musculoskeletal symptoms prevalence and risk factors for restaurant cooks in Taiwan. A cross-sectional survey of a convenient sample of 765 participants was conducted in 2009. The results showed that 652 (85.2%) participants reported that they had at least one musculoskeletal symptom within the previous year. The most common musculoskeletal symptoms-affected body sites included the shoulders (63.5%), neck (59.9%), and lower back (56.9%). Multiple logistic regression analysis suggested that frequent lifting of objects has a strong relationship with musculoskeletal symptoms of the neck (odds ratio, OR = 1.70), shoulders (OR = 1.70), upper back (OR = 1.58), lower back (OR = 1.75), elbow (OR = 1.61), fingers/wrists (OR = 1.68), hips/thighs (OR = 1.50), and knees (OR = 1.53). The working hours per day were associated with elbow (OR = 1.11), fingers/wrists (OR = 1.09), and knees (OR = 1.12). Female cooks had a higher risk of musculoskeletal symptoms in the upper back than male cooks (OR = 1.55). Higher body mass index was also related to musculoskeletal symptoms of the shoulders and ankles/feet. In conclusion, this study shows that cooks are at high risk for musculoskeletal symptoms, and some lifestyle and occupational factors are related to this higher prevalence among cooks.
{"title":"Prevalence and risk factors of subjective musculoskeletal symptoms among cooks in Taiwan","authors":"Liwen Liu, An-Hsiang Wang, Su-Lun Hwang, Yung-hui Lee, Chih-Yong Chen","doi":"10.1080/10170669.2011.573005","DOIUrl":"https://doi.org/10.1080/10170669.2011.573005","url":null,"abstract":"This study investigated musculoskeletal symptoms prevalence and risk factors for restaurant cooks in Taiwan. A cross-sectional survey of a convenient sample of 765 participants was conducted in 2009. The results showed that 652 (85.2%) participants reported that they had at least one musculoskeletal symptom within the previous year. The most common musculoskeletal symptoms-affected body sites included the shoulders (63.5%), neck (59.9%), and lower back (56.9%). Multiple logistic regression analysis suggested that frequent lifting of objects has a strong relationship with musculoskeletal symptoms of the neck (odds ratio, OR = 1.70), shoulders (OR = 1.70), upper back (OR = 1.58), lower back (OR = 1.75), elbow (OR = 1.61), fingers/wrists (OR = 1.68), hips/thighs (OR = 1.50), and knees (OR = 1.53). The working hours per day were associated with elbow (OR = 1.11), fingers/wrists (OR = 1.09), and knees (OR = 1.12). Female cooks had a higher risk of musculoskeletal symptoms in the upper back than male cooks (OR = 1.55). Higher body mass index was also related to musculoskeletal symptoms of the shoulders and ankles/feet. In conclusion, this study shows that cooks are at high risk for musculoskeletal symptoms, and some lifestyle and occupational factors are related to this higher prevalence among cooks.","PeriodicalId":369256,"journal":{"name":"Journal of The Chinese Institute of Industrial Engineers","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116105452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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