Pub Date : 2014-12-01DOI: 10.1109/IEEM.2014.7058880
S. Mäkinen, O. Dedehayir, R. Ortt
The performance of any technological system is dependent on the performance of its subsystems. The evolution of the entire technological systems performance is determined by the performance improvements in deficient sub-systems. In this paper, we extend earlier notions of clockspeed measurement [6, 7] in our examination of the evolutionary dynamics of technological systems. We study the time lag in reverse salience improving the overall system performance and its relation with subsequent product performance. Our empirical study of the product performance investigates the product performance of the PC (personal computer) games. Our findings suggest that the evolution of the PC technological system with respect to computer gaming function is losing forward momentum on the processing speed performance front, while maintaining momentum on the graphics performance front.
{"title":"Exploring effects of ecosystem clockspeed on product performance","authors":"S. Mäkinen, O. Dedehayir, R. Ortt","doi":"10.1109/IEEM.2014.7058880","DOIUrl":"https://doi.org/10.1109/IEEM.2014.7058880","url":null,"abstract":"The performance of any technological system is dependent on the performance of its subsystems. The evolution of the entire technological systems performance is determined by the performance improvements in deficient sub-systems. In this paper, we extend earlier notions of clockspeed measurement [6, 7] in our examination of the evolutionary dynamics of technological systems. We study the time lag in reverse salience improving the overall system performance and its relation with subsequent product performance. Our empirical study of the product performance investigates the product performance of the PC (personal computer) games. Our findings suggest that the evolution of the PC technological system with respect to computer gaming function is losing forward momentum on the processing speed performance front, while maintaining momentum on the graphics performance front.","PeriodicalId":318405,"journal":{"name":"2014 IEEE International Conference on Industrial Engineering and Engineering Management","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125634165","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 : 2014-12-01DOI: 10.1109/IEEM.2014.7058605
Yuliang Su, Xuening Chu, Dongping Chen, Dexin Chu
Precedence constrained operation sequencing problem (PCOSP) is concerned with selection of feasible and efficient operation sequence with minimal machining cost in process planning. Traditional genetic algorithm (GA) generates solution sequence by using randomly selection and insertion of operations, which will break the precedence constraints between operations. The additional fixing approaches for the infeasible solutions will result in low efficiency. Some modified GAs could generate feasible solutions but have premature convergence problem when facing complicated precedence constraints. To overcome the shortcomings, this paper proposed a modified GA that use an edge selection based chromosome encoding approach to make sure all the precedence constraints are met in every step. The experiment illustrates that the proposed GA has superiority in finding optimal or near optimal solution.
{"title":"A modified genetic algorithm for precedence constrained operation sequencing problem in process planning","authors":"Yuliang Su, Xuening Chu, Dongping Chen, Dexin Chu","doi":"10.1109/IEEM.2014.7058605","DOIUrl":"https://doi.org/10.1109/IEEM.2014.7058605","url":null,"abstract":"Precedence constrained operation sequencing problem (PCOSP) is concerned with selection of feasible and efficient operation sequence with minimal machining cost in process planning. Traditional genetic algorithm (GA) generates solution sequence by using randomly selection and insertion of operations, which will break the precedence constraints between operations. The additional fixing approaches for the infeasible solutions will result in low efficiency. Some modified GAs could generate feasible solutions but have premature convergence problem when facing complicated precedence constraints. To overcome the shortcomings, this paper proposed a modified GA that use an edge selection based chromosome encoding approach to make sure all the precedence constraints are met in every step. The experiment illustrates that the proposed GA has superiority in finding optimal or near optimal solution.","PeriodicalId":318405,"journal":{"name":"2014 IEEE International Conference on Industrial Engineering and Engineering Management","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122689918","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 : 2014-12-01DOI: 10.1109/IEEM.2014.7058683
H. Lohasiriwat, Temsin Wattanapanich, Panmeq Saechan
Working with computer usually required prolonged static sitting. Both static work and awkward posture are well known as the two major ergonomic risk factors in such activity. Workstation arrangement guidelines are usually suggested based on good working posture. In this study, rather than investigating on the physical dimensions of the workstation (i.e., table and chair) like others, we look into the font size factor instead. Our research is separated into two phases. The first phase is to study the effect of font size (8 moa, 12 moa, 16 moa, and 24 moa) and viewing distance on working performance as measured by text-entering speed. Our results show that both factors are not significant (p-value = 0.464 and 0.913 respectively). Then, in the second phase, we look at whether there are tendency of sitting posture change due to the different font size. Our findings show significant difference on neck angle (p-value = 0.007) but not back angle (p-value = 0.314). Our finding suggests that there are more posture deviations under smaller font size conditions.
{"title":"The effect of font size on typing performance and sitting posture","authors":"H. Lohasiriwat, Temsin Wattanapanich, Panmeq Saechan","doi":"10.1109/IEEM.2014.7058683","DOIUrl":"https://doi.org/10.1109/IEEM.2014.7058683","url":null,"abstract":"Working with computer usually required prolonged static sitting. Both static work and awkward posture are well known as the two major ergonomic risk factors in such activity. Workstation arrangement guidelines are usually suggested based on good working posture. In this study, rather than investigating on the physical dimensions of the workstation (i.e., table and chair) like others, we look into the font size factor instead. Our research is separated into two phases. The first phase is to study the effect of font size (8 moa, 12 moa, 16 moa, and 24 moa) and viewing distance on working performance as measured by text-entering speed. Our results show that both factors are not significant (p-value = 0.464 and 0.913 respectively). Then, in the second phase, we look at whether there are tendency of sitting posture change due to the different font size. Our findings show significant difference on neck angle (p-value = 0.007) but not back angle (p-value = 0.314). Our finding suggests that there are more posture deviations under smaller font size conditions.","PeriodicalId":318405,"journal":{"name":"2014 IEEE International Conference on Industrial Engineering and Engineering Management","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131744518","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 : 2014-12-01DOI: 10.1109/IEEM.2014.7058883
Christopher Brandl, Alexander Mertens, J. Bützler, C. Schlick
In this industrial engineering study working postures of 57 workers in an assembly of a trailer manufacturer were analyzed according to the OWAS method and its extension to head postures. For eight especially stressful work tasks 19714 body postures were analyzed. Overall the working posture analysis identified a largely acceptable postural load. A significant influence of the work task on relative frequencies of posture categories and work posture combinations assigned to the same action category was found. Differences in working postures within the same work task could be identified. Finally it is shown that the conducted work posture analysis can help to improve the stress situation of workers through postural load balancing.
{"title":"Postural load balancing in daily personnel planning in an assembly line for trailer production by working posture analysis","authors":"Christopher Brandl, Alexander Mertens, J. Bützler, C. Schlick","doi":"10.1109/IEEM.2014.7058883","DOIUrl":"https://doi.org/10.1109/IEEM.2014.7058883","url":null,"abstract":"In this industrial engineering study working postures of 57 workers in an assembly of a trailer manufacturer were analyzed according to the OWAS method and its extension to head postures. For eight especially stressful work tasks 19714 body postures were analyzed. Overall the working posture analysis identified a largely acceptable postural load. A significant influence of the work task on relative frequencies of posture categories and work posture combinations assigned to the same action category was found. Differences in working postures within the same work task could be identified. Finally it is shown that the conducted work posture analysis can help to improve the stress situation of workers through postural load balancing.","PeriodicalId":318405,"journal":{"name":"2014 IEEE International Conference on Industrial Engineering and Engineering Management","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127665414","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 : 2014-12-01DOI: 10.1109/IEEM.2014.7058859
O. Sauer
Features of shopfloor-related information and communication technologies (ICT) or manufacturing execution systems are and will remain indispensable even in Industrie 4.0 - the industry after the forth industrial revolution. In practical operations, however, managers repeatedly wonder what development trends will appear in the automation pyramid and how shopfloor-related ICT systems will be enhanced in the future. The presented paper will highlight some of the major trends.
{"title":"Developments and trends in shopfloor-related ICT systems","authors":"O. Sauer","doi":"10.1109/IEEM.2014.7058859","DOIUrl":"https://doi.org/10.1109/IEEM.2014.7058859","url":null,"abstract":"Features of shopfloor-related information and communication technologies (ICT) or manufacturing execution systems are and will remain indispensable even in Industrie 4.0 - the industry after the forth industrial revolution. In practical operations, however, managers repeatedly wonder what development trends will appear in the automation pyramid and how shopfloor-related ICT systems will be enhanced in the future. The presented paper will highlight some of the major trends.","PeriodicalId":318405,"journal":{"name":"2014 IEEE International Conference on Industrial Engineering and Engineering Management","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133292188","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 : 2014-12-01DOI: 10.1109/IEEM.2014.7058724
Shieu-Hong Lin
For point-to-point direct delivery over the transportation network, timely delivery of commodity and reduction of total fuel cost are both important objectives to consider. Since fuel prices can vary significantly over a broad region, often there is a tradeoff between fuel cost and travel time. A short path may not be economical in terms of fuel cost while routing through areas with lower fuel prices may take more time. In this paper, we address multi-objective refueling optimization problems in the context of two priority models regarding fuel cost and travel time. Unlike the shortest path problem, optimal refueling paths may not be simple paths, which complicates the setup of mixed integer programs. We first start with arbitrage-free vehicle refueling planning that restricts refueling paths to simple paths in the network only. We then show how we can augment the mixed integer formulation for vehicle refueling planning without the arbitrage-free assumption.
{"title":"Multi-objective vehicle refueling planning using mixed integer programming","authors":"Shieu-Hong Lin","doi":"10.1109/IEEM.2014.7058724","DOIUrl":"https://doi.org/10.1109/IEEM.2014.7058724","url":null,"abstract":"For point-to-point direct delivery over the transportation network, timely delivery of commodity and reduction of total fuel cost are both important objectives to consider. Since fuel prices can vary significantly over a broad region, often there is a tradeoff between fuel cost and travel time. A short path may not be economical in terms of fuel cost while routing through areas with lower fuel prices may take more time. In this paper, we address multi-objective refueling optimization problems in the context of two priority models regarding fuel cost and travel time. Unlike the shortest path problem, optimal refueling paths may not be simple paths, which complicates the setup of mixed integer programs. We first start with arbitrage-free vehicle refueling planning that restricts refueling paths to simple paths in the network only. We then show how we can augment the mixed integer formulation for vehicle refueling planning without the arbitrage-free assumption.","PeriodicalId":318405,"journal":{"name":"2014 IEEE International Conference on Industrial Engineering and Engineering Management","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133652384","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 : 2014-12-01DOI: 10.1109/IEEM.2014.7058780
A. A. Kadir, X. Xu
Virtual machining systems that are adaptive and responsive towards real machining environment are crucial to leverage a deep understanding of the underlying machining operations. It must retain radical behavior in order to enhance process planning and machining performance, in response to ever-changing manufacturing activities. Therefore, the study aims to develop an interactive virtual machining system that is responsive to on-site machine tool condition utilizing STEP-NC as the data structure. Signals from sensors are acquired, processed and converted into meaningful values where they were then incorporated in the system enabling tool-path simulation in a realistic environment. The system platform was constructed using C# programming software, EXPRESS for constructing the data structure, and LABWindows for signal processing. The tested capabilities of the system functions showed that the up-to-date information obtained, truly supports the inter-working concept in a virtual-real systems interaction which leads to reduction of the total production time.
{"title":"Interactive virtual machining system using informative data structure and on-site machine tool status","authors":"A. A. Kadir, X. Xu","doi":"10.1109/IEEM.2014.7058780","DOIUrl":"https://doi.org/10.1109/IEEM.2014.7058780","url":null,"abstract":"Virtual machining systems that are adaptive and responsive towards real machining environment are crucial to leverage a deep understanding of the underlying machining operations. It must retain radical behavior in order to enhance process planning and machining performance, in response to ever-changing manufacturing activities. Therefore, the study aims to develop an interactive virtual machining system that is responsive to on-site machine tool condition utilizing STEP-NC as the data structure. Signals from sensors are acquired, processed and converted into meaningful values where they were then incorporated in the system enabling tool-path simulation in a realistic environment. The system platform was constructed using C# programming software, EXPRESS for constructing the data structure, and LABWindows for signal processing. The tested capabilities of the system functions showed that the up-to-date information obtained, truly supports the inter-working concept in a virtual-real systems interaction which leads to reduction of the total production time.","PeriodicalId":318405,"journal":{"name":"2014 IEEE International Conference on Industrial Engineering and Engineering Management","volume":"432 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133917957","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 : 2014-12-01DOI: 10.1109/IEEM.2014.7058752
Diego A. Tlapa, Jorge Limon, Y. A. Báez, D. Valles-Rosales
Main objectives of this work are to describe the current situation and increase the understanding of successful Six Sigma (SS) implementations through a study of Critical Success Factors (CSFs) reported by researchers and practitioners. The work integrates lessons learned from successful projects and considers additional progress to the approach, through an extended literature review. In order to provide a comprehensive investigation with emphasis on establishing the evolution of SS, two periods of time were analyzed using odds-ratio and a meta-analytic summary was conducted to study 17 CSFs reported in 234 studies from different countries. Main findings support the notion that CSFs reported in the literature are changing their frequency of use in the recent years. Top management involvement and commitment remains as the most important CSF whereas project selection and prioritization seems to decrease its presence nowadays.
{"title":"Critical success factors of six sigma: An overview","authors":"Diego A. Tlapa, Jorge Limon, Y. A. Báez, D. Valles-Rosales","doi":"10.1109/IEEM.2014.7058752","DOIUrl":"https://doi.org/10.1109/IEEM.2014.7058752","url":null,"abstract":"Main objectives of this work are to describe the current situation and increase the understanding of successful Six Sigma (SS) implementations through a study of Critical Success Factors (CSFs) reported by researchers and practitioners. The work integrates lessons learned from successful projects and considers additional progress to the approach, through an extended literature review. In order to provide a comprehensive investigation with emphasis on establishing the evolution of SS, two periods of time were analyzed using odds-ratio and a meta-analytic summary was conducted to study 17 CSFs reported in 234 studies from different countries. Main findings support the notion that CSFs reported in the literature are changing their frequency of use in the recent years. Top management involvement and commitment remains as the most important CSF whereas project selection and prioritization seems to decrease its presence nowadays.","PeriodicalId":318405,"journal":{"name":"2014 IEEE International Conference on Industrial Engineering and Engineering Management","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131795921","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 : 2014-12-01DOI: 10.1109/IEEM.2014.7058657
M. Mutingi, C. Mbohwa
Inspired by the biological concepts of metamorphosis evolution, this paper presents a novel simulated metamorphosis (SM) algorithm for solving the homecare nurse scheduling problem in a fuzzy environment. The algorithm is motivated by the need for interactive, multi-objective, and efficient optimization approaches to solving problems with fuzzy conflicting goals and constraints. The SM goes through initialization, growth, and maturation phases, mimicking the metamorphosis process. Initialization generates a candidate solution which successively goes through growth and maturation loops. Comparative computational tests on benchmark problems show that, when compared to other algorithms, SM is more efficient and effective, producing near-optimal solutions within reasonable computation times.
{"title":"A novel simulated metamorphosis algorithm for homecare nurse scheduling","authors":"M. Mutingi, C. Mbohwa","doi":"10.1109/IEEM.2014.7058657","DOIUrl":"https://doi.org/10.1109/IEEM.2014.7058657","url":null,"abstract":"Inspired by the biological concepts of metamorphosis evolution, this paper presents a novel simulated metamorphosis (SM) algorithm for solving the homecare nurse scheduling problem in a fuzzy environment. The algorithm is motivated by the need for interactive, multi-objective, and efficient optimization approaches to solving problems with fuzzy conflicting goals and constraints. The SM goes through initialization, growth, and maturation phases, mimicking the metamorphosis process. Initialization generates a candidate solution which successively goes through growth and maturation loops. Comparative computational tests on benchmark problems show that, when compared to other algorithms, SM is more efficient and effective, producing near-optimal solutions within reasonable computation times.","PeriodicalId":318405,"journal":{"name":"2014 IEEE International Conference on Industrial Engineering and Engineering Management","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132253105","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 : 2014-12-01DOI: 10.1109/IEEM.2014.7058623
T. Wolfenstetter, K. Kernschmidt, C. Munzberg, D. Kammerl, Suparna Goswami, U. Lindemann, B. Vogel‐Heuser, H. Krcmar
During the development of product-service systems (PSS), various artifacts are modeled by the different involved disciplines, e.g. mechanics, electrics, electronics, software and services. Each of these artifacts represents different aspects of the PSS as a whole. In order to reuse the respective information that are contained in each artifact but which are represented using different ways of modeling, transformations are needed. In this paper we present a conceptual methodology how the relevant PSS elements and their attributes can be transformed from one specific language to another, in order to facilitate the cross-disciplinary use of model-based information during the development process of mechatronic PSS.
{"title":"Supporting the cross-disciplinary development of product-service systems through model transformations","authors":"T. Wolfenstetter, K. Kernschmidt, C. Munzberg, D. Kammerl, Suparna Goswami, U. Lindemann, B. Vogel‐Heuser, H. Krcmar","doi":"10.1109/IEEM.2014.7058623","DOIUrl":"https://doi.org/10.1109/IEEM.2014.7058623","url":null,"abstract":"During the development of product-service systems (PSS), various artifacts are modeled by the different involved disciplines, e.g. mechanics, electrics, electronics, software and services. Each of these artifacts represents different aspects of the PSS as a whole. In order to reuse the respective information that are contained in each artifact but which are represented using different ways of modeling, transformations are needed. In this paper we present a conceptual methodology how the relevant PSS elements and their attributes can be transformed from one specific language to another, in order to facilitate the cross-disciplinary use of model-based information during the development process of mechatronic PSS.","PeriodicalId":318405,"journal":{"name":"2014 IEEE International Conference on Industrial Engineering and Engineering Management","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130357736","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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