IIE Transactions最新文献_第10页

Analysis of dual tandem queues with a finite buffer capacity and non-overlapping service times and subject to breakdowns 有限缓冲容量、服务时间不重叠且易发生故障的双串联队列分析

IIE Transactions Pub Date : 2015-06-22 DOI: 10.1080/0740817X.2015.1055389

Kan Wu, Ning Zhao

引用次数: 15

A symmetric capacity-constrained differentiated oligopoly model for the United States pediatric vaccine market with linear demand 具有线性需求的美国儿童疫苗市场的对称容量约束差异化寡头垄断模型

IIE Transactions Pub Date : 2015-06-19 DOI: 10.1080/0740817X.2015.1009759

Banafsheh Behzad, S. Jacobson, M. Robbins

{"title":"A symmetric capacity-constrained differentiated oligopoly model for the United States pediatric vaccine market with linear demand","authors":"Banafsheh Behzad, S. Jacobson, M. Robbins","doi":"10.1080/0740817X.2015.1009759","DOIUrl":"https://doi.org/10.1080/0740817X.2015.1009759","url":null,"abstract":"The United States pediatric vaccine market is examined using Bertrand–Edgeworth–Chamberlin price competition. The proposed game captures interactions between symmetric, capacity-constrained manufacturers in a differentiated, single-product market with linear demand. Results indicate that a unique pure strategy equilibrium exists in the case where the capacities of the manufacturers are at their extreme. For the capacity region where no pure strategy equilibrium exists, there exists a mixed strategy equilibrium where the distribution function, its support, and the expected profit of the manufacturers are characterized. Three game instances are introduced to model the United States pediatric vaccine market. In each instance, the manufacturers are assumed to have equal capacity in producing vaccines. Vaccines are differentiated based upon the number of reported adverse medical events for that vaccine. Using a game-theoretic model, equilibrium prices are computed for each monovalent vaccine. Results indicate that the equilibrium prices for monovalent vaccines are lower than the federal contract prices. The numerical results provide both a lower and upper bound for the vaccine equilibrium prices in the public sector, based on the capacity of the vaccine manufacturers. Results illustrate the importance of several model parameters such as market demand and vaccine adverse events on the equilibrium prices. Supplementary materials are available for this article. Go to the publisher’s online edition of IIE Transactions for datasets, additional tables, detailed proofs, etc.","PeriodicalId":13379,"journal":{"name":"IIE Transactions","volume":"52 1","pages":"1252 - 1266"},"PeriodicalIF":0.0,"publicationDate":"2015-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0740817X.2015.1009759","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59749116","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: 9

Algorithms for optimizing the placement of stationary monitors 优化固定监视器放置的算法

IIE Transactions Pub Date : 2015-06-03 DOI: 10.1080/0740817X.2014.953646

Andrew Romich, Guanghui Lan, J. C. Smith

{"title":"Algorithms for optimizing the placement of stationary monitors","authors":"Andrew Romich, Guanghui Lan, J. C. Smith","doi":"10.1080/0740817X.2014.953646","DOIUrl":"https://doi.org/10.1080/0740817X.2014.953646","url":null,"abstract":"This article examines the problem of placing stationary monitors in a continuous space, with the goal of minimizing an adversary’s maximum probability of traversing an origin–destination route without being detected. The problem arises, for instance, in defending against the transport of illicit material through some area of interest. In particular, we consider the deployment of monitors whose probability of detecting an intruder is a function of the distance between the monitor and the intruder. Under the assumption that the detection probabilities are mutually independent, a two-stage mixed-integer nonlinear programming formulation is constructed for the problem. An algorithm is provided that optimally locates monitors in a continuous space. Then, this problem is examined for the case where the monitor locations are restricted to two different discretized subsets of continuous space. The analysis provides optimization algorithms for each case and derives bounds on the worst-case optimality gap between the restrictions and the initial (continuous-space) problem. Empirically, it is shown that discretized solutions can be obtained whose worst-case and actual optimality gaps are well within practical limits.","PeriodicalId":13379,"journal":{"name":"IIE Transactions","volume":"47 1","pages":"556 - 576"},"PeriodicalIF":0.0,"publicationDate":"2015-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0740817X.2014.953646","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59746479","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: 5

Improving the accuracy of airport emissions inventories using disparate datasets 使用不同的数据集提高机场排放清单的准确性

IIE Transactions Pub Date : 2015-06-03 DOI: 10.1080/0740817X.2014.938845

L. Sherry

引用次数: 13

Approximations to optimal sequences in single-gripper and dual-gripper robotic cells with circular layouts 圆形布局单爪和双爪机器人单元中最优序列的逼近

IIE Transactions Pub Date : 2015-06-03 DOI: 10.1080/0740817X.2014.937019

Kyung Sung Jung, H. N. Geismar, Michael Pinedo, C. Sriskandarajah

{"title":"Approximations to optimal sequences in single-gripper and dual-gripper robotic cells with circular layouts","authors":"Kyung Sung Jung, H. N. Geismar, Michael Pinedo, C. Sriskandarajah","doi":"10.1080/0740817X.2014.937019","DOIUrl":"https://doi.org/10.1080/0740817X.2014.937019","url":null,"abstract":"This article considers the problems of scheduling operations in single-gripper and dual-gripper bufferless robotic cells in which the arrangement of machines is circular. The cells are designed to produce identical parts under the free-pickup criterion with additive intermachine travel time. The objective is to find a cyclic sequence of robot moves that minimizes the long-run average time required to produce a part or, equivalently, that maximizes the throughput. Obtaining an efficient algorithm for an approximation to an optimal k-unit cyclic solution (over all k ≥ 1) is the focus of this article. The proposed algorithms introduce a new class of schedules, which are refered to as epi-cyclic cycles. A polynomial algorithm with a 5/3-approximation to an optimal k-unit cycle over all cells is developed. The performed structural analysis for dual-gripper cells leads to a polynomial-time algorithm that provides at worst a 3/2-approximation for the practically relevant case in which the dual-gripper switch time is less than twice the intermachine robot movement time. A computational study demonstrates that the algorithm performs much better on average than this worst-case bound suggests. The performed theoretical studies are a stepping stone for researching the complexity status of the corresponding domain. They also provide theoretical as well as practical insights that are useful in maximizing productivity of any cell configuration with either type of robot.","PeriodicalId":13379,"journal":{"name":"IIE Transactions","volume":"47 1","pages":"634 - 652"},"PeriodicalIF":0.0,"publicationDate":"2015-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0740817X.2014.937019","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59745669","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: 10

On the value of terrorist’s private information in a government’s defensive resource allocation problem 论恐怖分子私人信息在政府防卫资源配置中的价值

IIE Transactions Pub Date : 2015-06-03 DOI: 10.1080/0740817X.2014.938844

M. E. Nikoofal, M. Gümüş

{"title":"On the value of terrorist’s private information in a government’s defensive resource allocation problem","authors":"M. E. Nikoofal, M. Gümüş","doi":"10.1080/0740817X.2014.938844","DOIUrl":"https://doi.org/10.1080/0740817X.2014.938844","url":null,"abstract":"The ability to understand and predict the sequence of events leading to a terrorist attack is one of the main issues in developing pre-emptive defense strategies for homeland security. This article, explores the value of terrorist’s private information on a government’s defense allocation decision. In particular, two settings with different informational structures are considered. In the first setting, the government knows the terrorist’s target preference but does not know whether the terrorist is fully rational in his target selection decision. In the second setting, the government knows the degree of rationality of the terrorist but does not know the terrorist’s target preference. The government’s equilibrium budget allocation strategy for each setting is fully characterized and it is shown that the government makes resource allocation decisions by comparing her valuation for each target with a set of thresholds. The Value Of Information (VOI) from the perspective of the government for each setting is derived. The obtained results show that VOI mainly depends on the government’s budget and the degree of heterogeneity among the targets. In general, VOI goes to zero when the government’s budget is high enough. However, the impact of heterogeneity among the targets on VOI further depends on whether the terrorist’s target preference matches those of the government’s or not. Finally, various extensions on the baseline model are performed and it is shown that the structural properties of budget allocation equilibrium still hold true.","PeriodicalId":13379,"journal":{"name":"IIE Transactions","volume":"47 1","pages":"533 - 555"},"PeriodicalIF":0.0,"publicationDate":"2015-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0740817X.2014.938844","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59745777","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: 11

VAMP1RE: a single criterion for rating and ranking confidence-interval procedures VAMP1RE:对置信区间程序进行评级和排序的单一标准

IIE Transactions Pub Date : 2015-05-15 DOI: 10.1080/0740817X.2015.1047068

Yingchieh Yeh, B. Schmeiser

{"title":"VAMP1RE: a single criterion for rating and ranking confidence-interval procedures","authors":"Yingchieh Yeh, B. Schmeiser","doi":"10.1080/0740817X.2015.1047068","DOIUrl":"https://doi.org/10.1080/0740817X.2015.1047068","url":null,"abstract":"We propose VAMP1RE, a single criterion for rating and ranking confidence-interval procedures (CIPs) that use a fixed sample size. The quality of a CIP is traditionally thought to be many dimensional, typically composed of the probability of covering the unknown performance measure and the mean (and sometimes the standard deviation) of interval width, each of these over some set of nominal coverage probabilities. These many criteria reflect symptoms, rather than causes, of CIP quality. The VAMP1RE criterion focuses on two causes: departure from validity—violation of assumptions—and inability to mimic—the dissimilarity, for every data set, of a CIP’s interval to that of an ideal CIP. The ideal CIP is both valid (that is, adheres to all assumptions) and is an agreed-upon standard; possibly the ideal CIP is allowed knowledge not available to the real-world CIPs of interest. A high inability to mimic the ideal CIP implies that a CIP uses data inefficiently. For a given CIP, the VAMP1RE criterion is the expected squared difference between Schruben’s coverage values (analogous to p values) arising from the given CIP and from the ideal CIP. The implication is that an interval arising from a particular data set is good not because it is large or small but, rather, it is good to the extent that it is similar to the interval provided by the ideal CIP. We discuss the relationship to Schruben’s coverage function, provide a graphical interpretation, decompose the VAMP1RE criterion into the two cause components, and provide examples to illustrate that the VAMP1RE criterion provides numerical values that are useful for rating and ranking CIPs.","PeriodicalId":13379,"journal":{"name":"IIE Transactions","volume":"47 1","pages":"1203 - 1216"},"PeriodicalIF":0.0,"publicationDate":"2015-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0740817X.2015.1047068","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59750211","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

Simulation-based optimization for surgery appointment scheduling of multiple operating rooms 基于仿真的多手术室手术预约调度优化

IIE Transactions Pub Date : 2015-05-13 DOI: 10.1080/0740817X.2014.999900

Zheng Zhang, Xiaolan Xie

{"title":"Simulation-based optimization for surgery appointment scheduling of multiple operating rooms","authors":"Zheng Zhang, Xiaolan Xie","doi":"10.1080/0740817X.2014.999900","DOIUrl":"https://doi.org/10.1080/0740817X.2014.999900","url":null,"abstract":"This study is devoted to the appointment scheduling (AS) for a sequence of surgeries with random durations served by multiple operating rooms (Multi-OR). Surgeries are assigned to ORs dynamically on a first-come, first-serve (FCFS) basis. It materially differs from past literature in the sense that dynamic assignments are proactively anticipated in the determination of appointment times. A discrete-event framework is proposed to model the execution of the surgery schedule and to evaluate the sample path gradient of a total cost incurred by surgeon waiting, OR idling, and OR overtime. The sample path cost function is shown to be unimodal, Lipchitz-continuous, and differentiable w.p.1 and the expected cost function continuously differentiable. A stochastic approximation algorithm based on unbiased gradient estimators is proposed and extensive numerical experiments suggest that it converges to a global optimum. A series of numerical experiments is performed to show the significant benefits of the Multi-OR setting and properties of the optimal solution with respect to various system parameters such as cost structure and numbers of surgeries and ORs.","PeriodicalId":13379,"journal":{"name":"IIE Transactions","volume":"67 1","pages":"1012 - 998"},"PeriodicalIF":0.0,"publicationDate":"2015-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0740817X.2014.999900","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59748875","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: 51

Analysis and optimization of the edge effect for III–V nanowire synthesis via selective area metal-organic chemical vapor deposition 选择性区金属-有机化学气相沉积法合成III-V纳米线边缘效应分析与优化

IIE Transactions Pub Date : 2015-04-28 DOI: 10.1080/0740817X.2015.1033038

Y. Duanmu, Qiang Huang

{"title":"Analysis and optimization of the edge effect for III–V nanowire synthesis via selective area metal-organic chemical vapor deposition","authors":"Y. Duanmu, Qiang Huang","doi":"10.1080/0740817X.2015.1033038","DOIUrl":"https://doi.org/10.1080/0740817X.2015.1033038","url":null,"abstract":"Selective Area Metal-Organic Chemical Vapor Deposition (SA-MOCVD) is a promising technique for the scale-up of nanowire fabrication. Our previous study investigated the growth mechanism of SA-MOCVD processes by quantifying contributions from various diffusion sources. However, the edge effect on nanostructure uniformity captured by skirt area diffusion was not quantitatively analyzed. This work further improves our understanding of the process by considering the edge effect as a superposition of skirt area diffusion and “blocking effect” and optimizing the edge effect for uniformity control of nanowire growth. We directly model the blocking effect of nanowires in the process of precursor diffusion from the skirt area to the center of a substrate. The improved model closely captures the distribution of the nanowire length across the substrate. Physical interpretation of the edge effect is provided. With the established model, we provide a method to optimize the width of the skirt area to improve the predicted structural uniformity of SA-MOCVD growth.","PeriodicalId":13379,"journal":{"name":"IIE Transactions","volume":"47 1","pages":"1424 - 1431"},"PeriodicalIF":0.0,"publicationDate":"2015-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0740817X.2015.1033038","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59750382","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: 2

A location–allocation problem with concentric circles 具有同心圆的位置分配问题

IIE Transactions Pub Date : 2015-04-28 DOI: 10.1080/0740817X.2015.1034897

J. Brimberg, Z. Drezner

引用次数: 4