{"title":"Dynamic Cross Impact Analysis with Markov Chain","authors":"A. Mamdouh, A. Ahmed, M. Saleh, Nedaa Agami","doi":"10.1109/IEOM.2015.7093728","DOIUrl":"https://doi.org/10.1109/IEOM.2015.7093728","url":null,"abstract":"Early warning and intelligent decisions have proved to be important tools to handle the unprecedented events (wildcards) that might emerge in the future. Relying on forecasting techniques only are not enough to shape the future, since they depend only on the historical shape and they generate one image of the future. The Futures Methodologies are capable of overcoming the constraints imposed on the Forecasting techniques. This is so since they explore, create, and test both possible and desirable futures to improve the decision making process and combine quantitative and qualitative techniques. Cross Impact Analysis generates occurrence probabilities of wildcards taking into account the interdependencies between their occurrences at a specific point in the future. Cross Impact Analysis is a hybrid quantitative and qualitative futures methodology and is very prominent in the Futures Studies literature. This paper introduces a novel contribution to the Futures Studies literature. The Dynamic Cross Impact Analysis is an enhancement to the traditional Cross Impact Analysis by adding the dynamic behavior, time dimension, through the use of Markov Chains. It generates dependent wildcards occurrence probabilities for a number of future years. As a result of this hybridization, a more realistic and rational anticipation of the future is obtained and hence allows for better decision making. The proposed hybrid methodology is applied to the tourism sector to study different wildcards.","PeriodicalId":410110,"journal":{"name":"2015 International Conference on Industrial Engineering and Operations Management (IEOM)","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134451641","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}
{"title":"Minimizing total weighted tardiness in single machine problem with non-identical job sizes","authors":"M. Bijari, Omid Rajabi","doi":"10.1109/IEOM.2015.7093753","DOIUrl":"https://doi.org/10.1109/IEOM.2015.7093753","url":null,"abstract":"In this paper, minimizing total weighted tardiness in single machine problem has been considered. Jobs have different size, also batch processing assumption is considered. We developed a new Mixed Integer Linear Programming (MILP) to the problem. The model solves the problem faster than previous model; due to the proposed model restricted the solution space. Some instances problems are generated in order to evaluate the proposed model. Comparing the solution time of the proposed model with the old model shows the efficiency of the new model. Computational result is shown that the proposed model decrease CPU time at more than 90% instances. In some instance CPU time decreased about 70%.","PeriodicalId":410110,"journal":{"name":"2015 International Conference on Industrial Engineering and Operations Management (IEOM)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115724175","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}
{"title":"Statistical analysis of total process capability index in two-stage processes with measurement errors","authors":"A. Amiri, E. Nikzad","doi":"10.1109/IEOM.2015.7093750","DOIUrl":"https://doi.org/10.1109/IEOM.2015.7093750","url":null,"abstract":"The manufacturing processes often involve multistage processes where the process capability of each stage is affected by the process capability of its previous stages. This property is known as cascade property. Therefore, the measured process capability indices in each stage represent the total capability of that stage. In the multistage processes two kinds of process capability index are defined in each stage of the multistage processes as follows: total process capability index and specific process capability index. The process capability indices are proposed under the assumption that there are no measurement errors. However, sometimes in the real application, this assumption is violated. The measurement errors affect the process capability indices significantly. In this paper, the effect of measurement errors on the total process capability index in the second stage of two-stage processes is statistically analyzed.","PeriodicalId":410110,"journal":{"name":"2015 International Conference on Industrial Engineering and Operations Management (IEOM)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114538964","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}
{"title":"Achieving competitiveness through setup time reduction","authors":"Minerva Mayela Orta-Lozano, B. Villarreal","doi":"10.1109/IEOM.2015.7093897","DOIUrl":"https://doi.org/10.1109/IEOM.2015.7093897","url":null,"abstract":"This paper has the purpose of describing the efforts of a Mexican company with several galvanizing lines, located in Monterrey, Mexico, to diminish setup time. The firm's operations strategy requires a better performance of the plant in terms of line capacity utilization, more productivity and quicker response to market's orders. The setup reduction project set to obtain those goals was organized to attack two fronts; The reduction of the time per setup, and the decrease of the number of setups.","PeriodicalId":410110,"journal":{"name":"2015 International Conference on Industrial Engineering and Operations Management (IEOM)","volume":"2012 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114586992","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}
{"title":"Modeling distributed product development processes in Small and Medium Enterprises","authors":"A. Mkrtchyan, Jayakanth Srinivasan","doi":"10.1109/IEOM.2015.7093882","DOIUrl":"https://doi.org/10.1109/IEOM.2015.7093882","url":null,"abstract":"The literature on Small and Medium Enterprises often discusses the emergent nature of the product development processes, however; it often does not address the lack of planning tools within such organizations. We aim to fill the gap in tool support for the planning process, by developing a discrete event simulation model to compute lead times of product development projects. The developed model explicitly captures the various tasks, teams, and developers within a distributed product development setting. Furthermore, it captures the iterative nature of the product development process and specifies the contextual relationships among tasks and among developers. The model was validated on a historical data set, as well as with case data from an ongoing project with a small-sized software firm. The model has been encapsulated into a tool using an easy-to-use desktop and iPad application. This work contributes to the practice of product development by allowing managers to model distributed product development teams, individual developers with varying levels of skills and expertise, as well as analyze and optimize the impact of various product development architectures on completion schedule and cost.","PeriodicalId":410110,"journal":{"name":"2015 International Conference on Industrial Engineering and Operations Management (IEOM)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116808082","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}
A. Al-Ahmari, E. A. Nasr, K. Moiduddin, M. Alkindi, A. Kamrani
{"title":"Patient specific mandibular implant for maxillofacial surgery using additive manufacturing","authors":"A. Al-Ahmari, E. A. Nasr, K. Moiduddin, M. Alkindi, A. Kamrani","doi":"10.1109/IEOM.2015.7093788","DOIUrl":"https://doi.org/10.1109/IEOM.2015.7093788","url":null,"abstract":"The reconstruction of mandible bone defects by the intraoperative planning of design implant results in the aesthetic and cosmetic deviation leading to increase surgical time and implant revision. The maxillofacial surgery can be improved using advanced manufacturing technique such as additive manufacturing technology with the medical modeling software to design patient specific implant which can custom fit the patient's jaw precisely and accurately. The commercial produced mandible reconstruction implants are of standard size and shape which needs manual bending before surgery, using trial and error method to custom fit the patient's jaw. Even a slight mismatch between the bone-plate interface results in the implant loosening and failure. With the integration of computer aided design (CAD), additive manufacturing, and advanced imaging systems (CT or MRI), the patient CT scan images are analyzed and processed using medical modeling software into a 3D format to produce a customized or patient specific design implant via additive manufacturing technique, such as fused deposition modeling and Electron beam melting technology. The produced customized implant fits accurately onto the patient's jaw, thus reducing the implant revision and surgery time. The customized mandible implant design and its fabrication using Additive manufacturing is an effective method in the mandible reconstruction surgery. In this study, a digital design route for patient specific mandible implant is proposed.","PeriodicalId":410110,"journal":{"name":"2015 International Conference on Industrial Engineering and Operations Management (IEOM)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124870463","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}
{"title":"Development of a framework to customize design methodologies for product service systems","authors":"Tuan-anh Tran, J. Park","doi":"10.1109/IEOM.2015.7093816","DOIUrl":"https://doi.org/10.1109/IEOM.2015.7093816","url":null,"abstract":"This work introduces the development of a framework that allows researchers and practitioners to customize design methodologies for their own specific product service system (PSS) design problems. PSS has been researched for more than a decade but despite its economical and ecological benefits to customers, providers, the environment and the society, the adoption of PSS in industry is limited for its potential. One of the main reasons is that designing PSS is a difficult task because when designing PSS, designers have to deal with products, services, stakeholders, outsiders, etc. simultaneously. Many researchers worked on proposing new methodologies for designing PSS but the results were not sufficiently effective. In this work, the authors propose a new approach of customizing new design methodologies for PSS through the use of a framework which consists of the generation and selection processes of possible methodologies. We also include an illustrating example to demonstrate the use of this framework in actual cases.","PeriodicalId":410110,"journal":{"name":"2015 International Conference on Industrial Engineering and Operations Management (IEOM)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122623761","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}
{"title":"Assessment of total productive maintenance implementation in a semiautomated manufacturing company through downtime and mean downtime analysis","authors":"Chowdury M. L. Rahman","doi":"10.1109/IEOM.2015.7093762","DOIUrl":"https://doi.org/10.1109/IEOM.2015.7093762","url":null,"abstract":"Total productive maintenance (TPM) has become one of the most popular maintenance strategies to ensure high machine reliability since it is regarded as an integral part of lean Manufacturing. One of the main objectives of TPM is to increase the overall equipment effectiveness of plant equipment with a modest investment in maintenance. Companies around the world spend a lot of money on buying new machinery to increase the production, however a little is done to get hundred percent output from the machines. Nevertheless, because of increased competition and demand of quality products at lower costs, buying latest equipment is not a solution unless it is fully utilized. Therefore machine maintenance and in particular, implementing an appropriate maintenance strategy has become increasingly important for manufacturing industries to fulfill these requirements. In this regard, this paper has focused on a case-study work with the aim of evaluating the effects of total productive maintenance implementation onto the existing production scenario of a selected semi-automated manufacturing company of Bangladesh by measuring downtime and mean downtime reduction and performing mean downtime analysis (MDT). Pareto analysis and statistical analysis of downtimes have been conducted to identify the most affecting downtime factors hierarchically. According to the results observed, modern maintenance management and production improvement techniques have been suggested to improve the maintenance procedure and at the same time to enhance the volume of production as well.","PeriodicalId":410110,"journal":{"name":"2015 International Conference on Industrial Engineering and Operations Management (IEOM)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125534532","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}
Basel Alsayyed Ahmad, Hoda H. ElSheikh, Abbas Fadoun
{"title":"Review of power quality monitoring systems","authors":"Basel Alsayyed Ahmad, Hoda H. ElSheikh, Abbas Fadoun","doi":"10.1109/IEOM.2015.7093825","DOIUrl":"https://doi.org/10.1109/IEOM.2015.7093825","url":null,"abstract":"Power quality is gaining a lot of interest lately by researchers and engineers as electricity is a vital part of our daily life. The aim of this paper is to survey some of the recent existing systems, techniques and methods that are being used to monitor power quality. The survey focuses mainly on power quality monitoring systems which are composed of various tools, software, communication links etc. that work together as one coherent system. Another goal is to develop an understanding about the quality management in the area of power industry. Some of the methods and techniques that are presented discuss about power quality meter placement techniques. Finding the best locations to place the power quality monitors in the electrical grid is done by developing algorithms and approaches to find the appropriate number of monitors and the appropriate locations to place them in order to reduce the cost of the PQM system and increase its efficiency. The paper discusses the basic idea of each method or system in order to have an understanding about its importance and role. Then, a simple comparison is made between the techniques in terms of their advantages and disadvantages. After that, international industry practices and guidelines for power quality monitoring and management are discussed. Lastly, some examples for the efforts that are made in the area of power quality improvement are discussed.","PeriodicalId":410110,"journal":{"name":"2015 International Conference on Industrial Engineering and Operations Management (IEOM)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129248866","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}
A. Elkamel, L. Simon, E. Tsai, V. Vinayagamoorthy, I. Bagshaw, S. Al-Adwani, K. Mahdi
{"title":"Modeling the mechanical properties of biopolymers for automotive applications","authors":"A. Elkamel, L. Simon, E. Tsai, V. Vinayagamoorthy, I. Bagshaw, S. Al-Adwani, K. Mahdi","doi":"10.1109/IEOM.2015.7093885","DOIUrl":"https://doi.org/10.1109/IEOM.2015.7093885","url":null,"abstract":"The automotive industry is constantly looking for alternative solutions to reduce manufacturing cost and use renewable materials. Implementing agro-fibres as polymer fillers in thermoplastic matrix will satisfy the automotive criteria without sacrificing the mechanical properties currently set by the conventional fillers such as glass fibre, talc, or mica. This paper proposes the use of wheat straw as filler in polypropylene for automotive industry and investigates models for determining compositions of the materials to correspond to mechanical properties. Data collection is performed by varying weight percentages of wheat straw and polypropylene to create the biocomposites through an extrusion process. The end products are molded into proper shapes for mechanical testing. Different modeling approaches that include polynomial regression, artificial neural networks and support vector machines are investigated to prepare predictive models for the biocomposite properties. A comparison between the methods shows that support vector machines produced the best model, followed by artificial neural networks, and then polynomial regression.","PeriodicalId":410110,"journal":{"name":"2015 International Conference on Industrial Engineering and Operations Management (IEOM)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129492372","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}