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2008 Winter Simulation Conference最新文献

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Simplification and aggregation strategies applied for factory analysis in conceptual phase using simulation 简化聚合策略在概念阶段工厂分析中的应用
2008 Winter Simulation Conference Pub Date : 2008-12-07 DOI: 10.1109/WSC.2008.4736283
M. Moris, A. Ng, Jacob Svensson
{"title":"Simplification and aggregation strategies applied for factory analysis in conceptual phase using simulation","authors":"M. Moris, A. Ng, Jacob Svensson","doi":"10.1109/WSC.2008.4736283","DOIUrl":"https://doi.org/10.1109/WSC.2008.4736283","url":null,"abstract":"Despite that simulation possesses an establish background and offers tremendous promise for designing and analyzing complex production systems, manufacturing industry has been less successful in using it as a decision support tool, especially in the conceptual phase of factory design. This paper presents how simplification and aggregation strategies are incorporated in a modeling, simulation and analysis tool, with the aim of supporting decision making in conceptual phase. Conceptual modeling is guided by a framework using an object library with generic drag and drop system components and system control objects. Data inputs are simplified by the use of Effective Process Time distributions and a novel aggregation method for product mix cycle time differences. The out coming specification is through a Web Service interface handle by modeling system architecture, automatically generating a simulation model and analysis. Case studies confirm a breakthrough in project time reduction without appreciable effects on the model¿s fidelity.","PeriodicalId":162289,"journal":{"name":"2008 Winter Simulation Conference","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124674722","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}
引用次数: 22
Improving performance by replicating simulations with alternative synchronization approaches 通过使用可选同步方法复制模拟来提高性能
2008 Winter Simulation Conference Pub Date : 2008-12-07 DOI: 10.1109/WSC.2008.4736180
Zengxiang Li, Wentong Cai, S. Turner, K. Pan
{"title":"Improving performance by replicating simulations with alternative synchronization approaches","authors":"Zengxiang Li, Wentong Cai, S. Turner, K. Pan","doi":"10.1109/WSC.2008.4736180","DOIUrl":"https://doi.org/10.1109/WSC.2008.4736180","url":null,"abstract":"Parallel and distributed simulation facilitates the construction of a simulation application (i.e., federation in HLA terminology) with a number of simulation components (federates). Recently, an approach based on active replication technique has been proposed to improve the performance of simulations by exploring software diversity. To guarantee the correctness of the approach, all replicas of the same federate are required to be Piece-Wise-Deterministic (PWD). However, the PWD restriction will not be satisfied if the replicas achieve software diversity by employing different kinds of synchronization approaches. A replication structure is proposed in this paper, which can transparently handle the federate replicas that use either conservative or optimistic synchronization approach. The execution speed of the federation is increased by always choosing the fastest replica to represent the federate in the federation. Besides presenting the implementation details, we also report the experimental results to demonstrate the performance improvement of the replication structure.","PeriodicalId":162289,"journal":{"name":"2008 Winter Simulation Conference","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124753335","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}
引用次数: 7
Simulation as an integral part of the decision making processes in a service industry: Eircom’s field technicians 模拟是服务行业决策过程中不可或缺的一部分:Eircom的现场技术人员
2008 Winter Simulation Conference Pub Date : 2008-12-07 DOI: 10.1109/WSC.2008.4736422
F. Timon
{"title":"Simulation as an integral part of the decision making processes in a service industry: Eircom’s field technicians","authors":"F. Timon","doi":"10.1109/WSC.2008.4736422","DOIUrl":"https://doi.org/10.1109/WSC.2008.4736422","url":null,"abstract":"Eircom is Irelands main supplier of telecommunication networks. Fault arrival in these networks is unpredictable, however the pattern of fault arrivals is predictable. A key decision involves the planning of staff levels in order to meet potential peak demand (which can be excessive); as planning to meet average demand leads to very poor service levels. The model is used find an agreed balance between service level and \"productivity\". The model also provides a collaborative and transparent decision making methodology for Eircom. The main groups involved are customer service, field management, and the field workforce. The model helps in analysing these conflicting requirements and bringing the three groups together to reach a decision. The model is used to plan staffing levels.","PeriodicalId":162289,"journal":{"name":"2008 Winter Simulation Conference","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128162887","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}
引用次数: 1
An experimental study of an iterative simulation-optimization algorithm for production planning 生产计划迭代模拟优化算法的实验研究
2008 Winter Simulation Conference Pub Date : 2008-12-07 DOI: 10.1109/WSC.2008.4736317
D. F. Irdem, N. B. Kacar, R. Uzsoy
{"title":"An experimental study of an iterative simulation-optimization algorithm for production planning","authors":"D. F. Irdem, N. B. Kacar, R. Uzsoy","doi":"10.1109/WSC.2008.4736317","DOIUrl":"https://doi.org/10.1109/WSC.2008.4736317","url":null,"abstract":"It is well known from queueing and simulation models that cycle times in capacitated production systems increase nonlinearly with resource utilization, which poses considerable difficulty for the conventional linear programming (LP) models used for this purpose. Hung and Leachman (1996) propose a highly intuitive iterative approach where a detailed simulation model of the production facility is used to estimate flow time parameters used in an LP model We examine the convergence of this method under different experimental conditions, and conclude that it is hard to determine precisely when the method converges.","PeriodicalId":162289,"journal":{"name":"2008 Winter Simulation Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127476915","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}
引用次数: 17
DGHPSim: Supporting smart thinking to improve hospital performance DGHPSim:支持智慧思维，提高医院绩效
2008 Winter Simulation Conference Pub Date : 2008-12-07 DOI: 10.1109/WSC.2008.4736228
M. Gunal, M. Pidd
{"title":"DGHPSim: Supporting smart thinking to improve hospital performance","authors":"M. Gunal, M. Pidd","doi":"10.1109/WSC.2008.4736228","DOIUrl":"https://doi.org/10.1109/WSC.2008.4736228","url":null,"abstract":"DGHPSim is a suite of discrete event simulation models that enable managers and clinicians to investigate improvement scenarios for UK general hospitals. The models were developed in Micro Saint Sharp and are configured using hospital data and nationally available health episode statistics. The models can be separately but function best as a single, overall system model that allow users to develop understanding of the interaction effects of possible changes. An example of the use of DGHPSim is given, using UK NHS data, demonstrating how it can be used to investigate improvement options whilst keeping an eye on side effects.","PeriodicalId":162289,"journal":{"name":"2008 Winter Simulation Conference","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129115035","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}
引用次数: 20
System dynamics: What’s in it for healthcare simulation modelers 系统动力学:对医疗保健模拟建模者有什么好处
2008 Winter Simulation Conference Pub Date : 2008-12-07 DOI: 10.1109/WSC.2008.4736227
S. Brailsford
{"title":"System dynamics: What’s in it for healthcare simulation modelers","authors":"S. Brailsford","doi":"10.1109/WSC.2008.4736227","DOIUrl":"https://doi.org/10.1109/WSC.2008.4736227","url":null,"abstract":"In the past decade there has been an explosion in the use of system dynamics modeling in healthcare. Despite this, the approach is still far less well known than discrete-event simulation in the mainstream Operations Research community. This paper contains an introduction to system dynamics, illustrated by several examples in the field of healthcare, and discusses some of the possible reasons for the growth in the popularity of this approach for healthcare modeling.","PeriodicalId":162289,"journal":{"name":"2008 Winter Simulation Conference","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130719813","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}
引用次数: 123
Incorporating information networks into military simulations 将信息网络纳入军事模拟
2008 Winter Simulation Conference Pub Date : 2008-12-07 DOI: 10.1109/WSC.2008.4736063
D. Ahner, Jonathon K. Alt, F. Baez, John Jackson, S. Sanchez, T. Seitz
{"title":"Incorporating information networks into military simulations","authors":"D. Ahner, Jonathon K. Alt, F. Baez, John Jackson, S. Sanchez, T. Seitz","doi":"10.1109/WSC.2008.4736063","DOIUrl":"https://doi.org/10.1109/WSC.2008.4736063","url":null,"abstract":"Information superiority is considered a critical capability for future joint forces. As advances in technology continue to boost our ability to communicate in new and different ways, military forces are restructuring to incorporate these technologies. Yet we are still limited in our ability to measure the contributions made by information networks. We describe three recent studies at the Naval Postgraduate School that involve information networks. First, we examine a simulation model expanded from a two-person, zero-sum game to explore how information superiority contributes to battlefield results and how sensitive it is to information quality. Second, we examine how network-enabled communications affect the logistics operations in a centralized receiving and shipping point. The results are intended to provide operational insights for terminal node operations within a sustainment base. Third, we explore how social networks might be incorporated into agent-based models representing civilian populations in stability operations.","PeriodicalId":162289,"journal":{"name":"2008 Winter Simulation Conference","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130228150","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}
引用次数: 3
The mathematics of continuous-variable simulation optimization 连续变量仿真优化的数学方法
2008 Winter Simulation Conference Pub Date : 2008-12-07 DOI: 10.1109/WSC.2008.4736062
Sujin Kim, S. Henderson
{"title":"The mathematics of continuous-variable simulation optimization","authors":"Sujin Kim, S. Henderson","doi":"10.1109/WSC.2008.4736062","DOIUrl":"https://doi.org/10.1109/WSC.2008.4736062","url":null,"abstract":"Continuous-variable simulation optimization problems are those optimization problems where the objective function is computed through stochastic simulation and the decision variables are continuous. We discuss verifiable conditions under which the objective function is continuous or differentiable, and outline some key properties of two classes of methods for solving such problems, namely sample-average approximation and stochastic approximation.","PeriodicalId":162289,"journal":{"name":"2008 Winter Simulation Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127911640","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}
引用次数: 14
A comparison of sequential design methods for RF circuit block modeling 射频电路模块建模顺序设计方法的比较
2008 Winter Simulation Conference Pub Date : 2008-12-07 DOI: 10.1109/WSC.2008.4736432
K. Crombecq, L. D. Tommasi, D. Gorissen, T. Dhaene
{"title":"A comparison of sequential design methods for RF circuit block modeling","authors":"K. Crombecq, L. D. Tommasi, D. Gorissen, T. Dhaene","doi":"10.1109/WSC.2008.4736432","DOIUrl":"https://doi.org/10.1109/WSC.2008.4736432","url":null,"abstract":"When modeling complex systems, the locations of the data points are essential to the success of the algorithm. Sequential design methods are iterative algorithms that use data acquired from previous iterations to guide future sample selection. They are often used to improve an initial design such as a Latin hypercube or a simple grid, in order to focus on highly dynamic parts of the design space. In this paper, a comparison is made between different sequential design methods on a real-world electronics problem. Error-based and density-based methods are compared against a novel hybrid technique which incorporates both an error-based measure, using gradient estimations of the objective function, and a density-based measure, using a Voronoi tessellation approximation. The test results indicate that a considerable improvement of the average model accuracy can be achieved by using this new approach.","PeriodicalId":162289,"journal":{"name":"2008 Winter Simulation Conference","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121320090","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}
引用次数: 0
Managing workforce resource actions with multiple feedback control schemes 通过多种反馈控制方案管理劳动力资源操作
2008 Winter Simulation Conference Pub Date : 2008-12-07 DOI: 10.1109/WSC.2008.4736398
Young M. Lee, L. An, D. Connors
{"title":"Managing workforce resource actions with multiple feedback control schemes","authors":"Young M. Lee, L. An, D. Connors","doi":"10.1109/WSC.2008.4736398","DOIUrl":"https://doi.org/10.1109/WSC.2008.4736398","url":null,"abstract":"Demand disturbances in service businesses are typically managed by resource actions such as hiring, releasing and cross training of the workforce. The magnitudes of resource actions are often decided by estimating the discrepancy between the demand for services and the supply of workforce. However, naive feedback control of the resource actions by policies that equate the discrepancy to the control action can produce undesirable effects such as oscillation between hiring and releasing of workforce, and amplified oscillation through the stages of the service processes. Effective combination of multiple feedback control schemes can produce desirable policies of workforce resource actions. In this work, we study application of control theoretic principles in managing resource actions to see how various feedback control schemes can improve costs, utilization and stability of workforce.","PeriodicalId":162289,"journal":{"name":"2008 Winter Simulation Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125860976","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}
引用次数: 1
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