IMA Journal of Management Mathematics最新文献_第4页

A new approach to the joint order batching and picker routing problem with alternative locations 有备选地点的联合订单批处理和拣选机路由问题的新方法

IF 1.7 3区工程技术

IMA Journal of Management Mathematics Pub Date : 2023-08-22 DOI: 10.1093/imaman/dpad016

Sajjad Hedayati, Mostafa Setak, E. Demir, T. van Woensel

{"title":"A new approach to the joint order batching and picker routing problem with alternative locations","authors":"Sajjad Hedayati, Mostafa Setak, E. Demir, T. van Woensel","doi":"10.1093/imaman/dpad016","DOIUrl":"https://doi.org/10.1093/imaman/dpad016","url":null,"abstract":"\u0000 The clustered and generalized vehicle routing problem (CGVRP) extends the well-known vehicle routing problem by grouping the demand points into multiple distinct zones, and within each zone, further separation is made by forming clusters. The objective of the CGVRP is to determine the optimal routes for a fleet of vehicles dispatched from a depot, visiting all zones within each cluster. This requires making two simultaneous optimization decisions. Firstly, each zone must be visited by exactly one node, and secondly, all zones within a cluster must be visited by the same vehicle. In this paper, we introduce two mixed-integer linear programming formulations for the CGVRP, aimed at solving a joint order batching and picker routing problem with alternative locations (JOBPR-AL) in a warehouse environment featuring mixed-shelves configuration. Both formulations are tested on three scenarios of randomly generated small- and medium-sized instances. Additionally, we propose a general rule approach for calculating a cost matrix in a rectangular environment. The results demonstrate the effectiveness of the proposed mathematical formulations in efficiently solving problems with up to 180 nodes.","PeriodicalId":56296,"journal":{"name":"IMA Journal of Management Mathematics","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44025881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A new Malmquist productivity index with an application to commercial banks 一种新的Malmquist生产率指数及其在商业银行中的应用

IF 1.7 3区工程技术

IMA Journal of Management Mathematics Pub Date : 2023-08-16 DOI: 10.1093/imaman/dpad015

Chuanjin Zhu, Nan Zhu, Ali Emrouznejad, Tao-feng Ye

{"title":"A new Malmquist productivity index with an application to commercial banks","authors":"Chuanjin Zhu, Nan Zhu, Ali Emrouznejad, Tao-feng Ye","doi":"10.1093/imaman/dpad015","DOIUrl":"https://doi.org/10.1093/imaman/dpad015","url":null,"abstract":"\u0000 Management-led productivity improvements are crucial for achieving sustainable development, and the Malmquist productivity index is known to be useful in relevant contexts. This study aims to extend such index by using non-parametric mathematical modeling of production processes. Specifically, and in the spirit of the existing index, we introduce the directional distance function to develop a new one applicable to the joint production of desirable and undesirable outputs. Furthermore, we decompose the new index into two constituent components to provide more intuitive explanations when revealing the root sources of productivity changes over time. Under the cost minimization assumption, the new index is applicable when producers implement resource allocation management, and the input–output quantities and the micro-level input prices are known. The index emphasizes that the allocative efficiency should be regarded as an important aspect of productivity assessment like the technical efficiency. As a practical benchmarking tool, it can offer valuable information and provide appropriate strategies for managerial decision-making. The index’s application and usefulness is demonstrated in the commercial bank sector in China.","PeriodicalId":56296,"journal":{"name":"IMA Journal of Management Mathematics","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43343972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modelling player ratings in one day international cricket using the modified Duckworth-Lewis method 使用改进的Duckworth-Lewis方法模拟一天国际板球比赛中的球员评分

IF 1.7 3区工程技术

IMA Journal of Management Mathematics Pub Date : 2023-08-15 DOI: 10.1093/imaman/dpad014

M. Asif, M. Yousaf

引用次数: 0

In memory of Professor John Edward Boylan, 1959 – 2023 纪念约翰·爱德华·博伊兰教授，1959 - 2023年

IF 1.7 3区工程技术

IMA Journal of Management Mathematics Pub Date : 2023-08-10 DOI: 10.1093/imaman/dpad013

A. Syntetos

引用次数: 0

Optimal reinsurance contract and investment strategy for multiple competitive-cooperative insurers and a reinsurer 多家竞争性合作保险公司和再保险人的最优再保险合同和投资策略

IF 1.7 3区工程技术

IMA Journal of Management Mathematics Pub Date : 2023-07-15 DOI: 10.1093/imaman/dpad012

Tao Wang, Zhiping Chen, Peng Yang

{"title":"Optimal reinsurance contract and investment strategy for multiple competitive-cooperative insurers and a reinsurer","authors":"Tao Wang, Zhiping Chen, Peng Yang","doi":"10.1093/imaman/dpad012","DOIUrl":"https://doi.org/10.1093/imaman/dpad012","url":null,"abstract":"\u0000 In this article, we consider a reinsurance contract design by taking into account the joint interests of multiple insurers and a reinsurer. The reinsurance contract consists of optimal reinsurance strategies and reinsurance prices. The former are chosen by the competitive-cooperative insurers and the latter are determined by a reinsurer. Both insurers and the reinsurer can invest in the common risk-free asset and one different risky asset. The optimal time-consistent reinsurance-investment strategies of the insurers and the optimal reinsurance prices and investment strategy of the reinsurer are derived analytically. Numerical experiments are carried out to illustrate the influences of model parameters on the optimal reinsurance contract and optimal investment strategies. We find that the establishment of the reinsurance contract is affected by the correlation between the claim sizes of insurers as well as that of claim numbers. The results reveal that competition and cooperation will lead to a decrease and increase of the reinsurance price, respectively, showing the importance of opting for cooperation among insurers. Both competition and cooperation are beneficial to insurers, especially for those with high risk aversion.","PeriodicalId":56296,"journal":{"name":"IMA Journal of Management Mathematics","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42166970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solving Non-Linear Optimization Problems by a Trajectory Approach 用轨迹法求解非线性优化问题

IF 1.7 3区工程技术

IMA Journal of Management Mathematics Pub Date : 2023-07-10 DOI: 10.1093/imaman/dpad011

Z. Drezner, Malgorzata Miklas-Kalczynska

{"title":"Solving Non-Linear Optimization Problems by a Trajectory Approach","authors":"Z. Drezner, Malgorzata Miklas-Kalczynska","doi":"10.1093/imaman/dpad011","DOIUrl":"https://doi.org/10.1093/imaman/dpad011","url":null,"abstract":"\u0000 We propose solving non-linear optimization problems by a trajectory method. A parameter is introduced into the optimization problem. For example, a variable in the original formulation is replaced by its squared value. The parameter is the power at which the variable is raised. For a particular value of the parameter (power of 2), the optimal solution is easily obtained. The original optimization problem is defined for another value of the parameter (power of 1). As another example, the means and standard deviations of a function based on a set of variables can be calculated. We multiply the standard deviations by a factor (the parameter) between 0 and 1. Suppose that the problem is easily solvable for zero standard deviations (factor of 0). If we “slowly” increase the factor, the solution moves to the desired solution for a factor of 1. A trajectory connects the easily obtained solution to the desired solution. We trace the trajectory and the solution for the optimization problem is at the end of the trajectory. The procedure is applied for solving the single facility Weber location problem, and a competitive location problem with good results.","PeriodicalId":56296,"journal":{"name":"IMA Journal of Management Mathematics","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43668358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An advanced acceptance reliability sampling plan for heterogeneous items subject to external shocks 外部冲击下异质项目的先进验收可靠性抽样计划

IF 1.7 3区工程技术

IMA Journal of Management Mathematics Pub Date : 2023-05-22 DOI: 10.1093/imaman/dpad010

J. Cha, M. Finkelstein

引用次数: 0

Probabilistic forecasting of daily COVID-19 admissions using machine learning 使用机器学习对每日新冠肺炎入院人数的概率预测

IF 1.7 3区工程技术

IMA Journal of Management Mathematics Pub Date : 2023-05-14 DOI: 10.1093/imaman/dpad009

B. Rostami-Tabar, Siddharth Arora, J. Rendon-Sanchez, Thanos E. Goltsos

{"title":"Probabilistic forecasting of daily COVID-19 admissions using machine learning","authors":"B. Rostami-Tabar, Siddharth Arora, J. Rendon-Sanchez, Thanos E. Goltsos","doi":"10.1093/imaman/dpad009","DOIUrl":"https://doi.org/10.1093/imaman/dpad009","url":null,"abstract":"\u0000 Accurate forecasts of daily COVID-19 admissions are critical for healthcare planners and decision-makers to better manage scarce resources during and around infection peaks. Numerous studies have focused on forecasting COVID-19 admissions at the national or global levels. Localised predictions are vital, as they allow for resource planning redistribution, but also scarce and harder to get right. Several possible indicators can be used to predict COVID-19 admissions. The inherent variability in the admissions necessitates the generation and evaluation of the forecast distribution of admissions, as opposed to producing only a point forecast. In this study, we propose a quantile regression forest (QRF) model for probabilistic forecasting of daily COVID-19 admissions for a local hospital trust (aggregation of 3 hospitals), up to 7-days ahead, using a multitude of different predictors. We evaluate point forecast accuracy as well as the accuracy of the forecast distribution using appropriate measures. We provide evidence that QRF outperforms univariate time series methods and other more sophisticated benchmarks. Our findings also show that lagged admissions, total positive cases, daily tests performed, and Google grocery and Apple driving are the most salient predictors. Finally, we highlight areas where further research is needed.","PeriodicalId":56296,"journal":{"name":"IMA Journal of Management Mathematics","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49491967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Supply chain pricing strategies for advance selling with a deposit 预付款销售的供应链定价策略

IF 1.7 3区工程技术

IMA Journal of Management Mathematics Pub Date : 2023-05-02 DOI: 10.1093/imaman/dpad008

Qingfang Lyu, Shuang Wu, B. Li, Yawen Zhang

引用次数: 0

Mathematical modelling of mission-abort policies: a review 任务中止策略的数学建模:综述

IF 1.7 3区工程技术

IMA Journal of Management Mathematics Pub Date : 2023-04-18 DOI: 10.1093/imaman/dpad005

Augusto José Silva Rodrigues, C. Cavalcante, A. R. Alberti, Phillip Scarf, N. M. Alotaibi

{"title":"Mathematical modelling of mission-abort policies: a review","authors":"Augusto José Silva Rodrigues, C. Cavalcante, A. R. Alberti, Phillip Scarf, N. M. Alotaibi","doi":"10.1093/imaman/dpad005","DOIUrl":"https://doi.org/10.1093/imaman/dpad005","url":null,"abstract":"\u0000 This paper reviews works that consider the mathematical modelling of mission-abort policies. In a mission-abort policy (MAP), a valuable, and perhaps vulnerable system performs a mission with two, sometimes conflicting objectives, mission success and system survival, and the purpose of modelling is to determine conditions under which a mission should be aborted. Such problems are important in defence, and emerging in transportation and health management. We classify models by: the nature of the mission and the system; the nature of the return or rescue; type of deterioration model; and the decision objectives. We show that the majority of works consider a model of a one system, one target mission in which the mission is aborted once the hazard of failure reaches a critical level and the operating environment is the same for the outbound and inbound parts of the mission. Typically, the hazard of failure depends on the number of shocks received so far. Our analysis indicates that there has been little modelling development for multiple systems that can multi-task and dependent systems with common-cause failures, for example. We find no evidence that MAPs are used in practice and no works reviewed develop software demonstrators. We think there is considerable scope for modelling applications in transportation (e.g. dynamic train re-scheduling, last-mile logistics) and medical treatments, and MAPs may be more general than the literature that we have reviewed suggests.","PeriodicalId":56296,"journal":{"name":"IMA Journal of Management Mathematics","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48222100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2