Central European Journal of Operations Research最新文献_第6页

Vectors of indicators and pointer function in the Multistage Bipolar Method 多阶段双极法中指标和指针的矢量函数

IF 1.7 4区管理学

Central European Journal of Operations Research Pub Date : 2023-03-03 DOI: 10.1007/s10100-022-00833-1

T. Trzaskalik

引用次数: 2

The Hungarian insurance market structure: an empirical analysis 匈牙利保险市场结构的实证分析

IF 1.7 4区管理学

Central European Journal of Operations Research Pub Date : 2023-02-18 DOI: 10.1007/s10100-023-00842-8

Veronika Varga, Zoltán Madari

引用次数: 1

On the 2-rainbow independent domination numbers of some graphs 若干图的2彩虹独立支配数

IF 1.7 4区管理学

Central European Journal of Operations Research Pub Date : 2023-02-15 DOI: 10.1007/s10100-023-00840-w

Boštjan Gabrovšek, A. Peperko, J. Žerovnik

引用次数: 4

Evaluating the capacity of paired comparison methods to aggregate rankings of separate groups. 评估配对比较法汇总不同群体排名的能力。

IF 1.7 4区管理学

Central European Journal of Operations Research Pub Date : 2023-02-12 DOI: 10.1007/s10100-023-00839-3

Éva Orbán-Mihálykó, Csaba Mihálykó, László Gyarmati

引用次数: 0

Interval transportation problem: feasibility, optimality and the worst optimal value 区间运输问题：可行性、最优性和最差最优值

IF 1.7 4区管理学

Central European Journal of Operations Research Pub Date : 2023-01-30 DOI: 10.1007/s10100-023-00841-9

Elif Garajov'a, M. Rada

引用次数: 2

Optimal vaccination strategies using a distributed model applied to COVID-19. 基于分布式模型的COVID-19疫苗接种优化策略

IF 1.7 4区管理学

Central European Journal of Operations Research Pub Date : 2023-01-01 DOI: 10.1007/s10100-022-00819-z

Georgi Angelov, Raimund Kovacevic, Nikolaos I Stilianakis, Vladimir M Veliov

{"title":"Optimal vaccination strategies using a distributed model applied to COVID-19.","authors":"Georgi Angelov, Raimund Kovacevic, Nikolaos I Stilianakis, Vladimir M Veliov","doi":"10.1007/s10100-022-00819-z","DOIUrl":"https://doi.org/10.1007/s10100-022-00819-z","url":null,"abstract":"Optimal distribution of vaccines to achieve high population immunity levels is a desirable aim in infectious disease epidemiology. A distributed optimal control epidemiological model that accounts for vaccination was developed and applied to the case of the COVID-19 pandemic. The model proposed here is nonstandard and takes into account the heterogeneity of the infected sub-population with respect to the time since infection, which is essential in the case of COVID-19. Based on the epidemiological characteristics of COVID-19 we analyze several vaccination scenarios and an optimal vaccination policy. In particular we consider random vaccination over the whole population and the prioritization of age groups such as the elderly and compare the effects with the optimal solution. Numerical results of the model show that random vaccination is efficient in reducing the overall number of infected individuals. Prioritization of the elderly leads to lower mortality though. The optimal strategy in terms of total deaths is early prioritization of those groups having the highest contact rates.","PeriodicalId":9689,"journal":{"name":"Central European Journal of Operations Research","volume":"31 2","pages":"499-521"},"PeriodicalIF":1.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9461439/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9155908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Challenges for ATM management in times of market variability caused by the COVID-19 pandemic crisi. 在COVID-19大流行危机造成的市场波动时期，ATM管理面临的挑战。

IF 1.7 4区管理学

Central European Journal of Operations Research Pub Date : 2023-01-01 DOI: 10.1007/s10100-022-00816-2

Marcin Suder, Tomasz Wójtowicz, Rafał Kusa, Henryk Gurgul

{"title":"Challenges for ATM management in times of market variability caused by the COVID-19 pandemic crisi.","authors":"Marcin Suder, Tomasz Wójtowicz, Rafał Kusa, Henryk Gurgul","doi":"10.1007/s10100-022-00816-2","DOIUrl":"https://doi.org/10.1007/s10100-022-00816-2","url":null,"abstract":"One of the most important issues related to the management of an Automatic Teller Machine (ATM) network is the correct forecasting of the demand for cash. Typically, this demand, expressed as the value or number of ATM withdrawals, has some regularities that can be used to evaluate future values for these variables. However, forecasting becomes a challenge when a crisis occurs that could affect the behavior of ATM users. In this context, it is important to identify how the development of the crisis and the various information concerning it may affect people's attitudes to cash. This study aims to examine the impact of the COVID-19 pandemic on the behavior of ATM customers. On the basis of daily data from 81 ATMs, we analyze the changes in the value and number of withdrawals just before and during the COVID-19 pandemic in Poland. An event study analysis allows us to determine precisely the moments in which changes in user behavior took place. This means that it is also possible to examine the reaction of ATM users to the announcement and implementation of the pandemic restrictions, and to determine the factors that had an impact on the change in people's attitude to cash. Such a study is also important from a sociological point of view, as it enables one to understand people's reactions to the emerging crisis. Hence, its results may be useful not only for managers of ATM networks, but also for various authorities and policy makers.","PeriodicalId":9689,"journal":{"name":"Central European Journal of Operations Research","volume":"31 2","pages":"445-465"},"PeriodicalIF":1.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9648898/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9212527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Robust portfolio optimization for banking foundations: a CVaR approach for asset allocation with mandatory constraints. 银行基础的稳健投资组合优化:具有强制性约束的资产配置CVaR方法。

IF 1.7 4区管理学

Central European Journal of Operations Research Pub Date : 2023-01-01 DOI: 10.1007/s10100-022-00821-5

Maria Cristina Arcuri, Gino Gandolfi, Fabrizio Laurini

引用次数: 0

A goal programming model for two-stage COVID19 test sampling centers location-allocation problem. 两阶段covid - 19测试采样中心定位-分配问题的目标规划模型。

IF 1.7 4区管理学

Central European Journal of Operations Research Pub Date : 2023-01-01 DOI: 10.1007/s10100-022-00797-2

Yusuf Kuvvetli

{"title":"A goal programming model for two-stage COVID19 test sampling centers location-allocation problem.","authors":"Yusuf Kuvvetli","doi":"10.1007/s10100-022-00797-2","DOIUrl":"https://doi.org/10.1007/s10100-022-00797-2","url":null,"abstract":"The COVID19 virus, which first appeared in Wuhan, China, and has become a pandemic in a short time, has threatened the health system in many countries and put it into a bottleneck. Simultaneously, the second wave's expectation spread it necessary to plan the health services correctly. In this study, a location-allocation problem in the two-echelon system, which considers different test sampling alternatives, is examined to obtain test sampling centers' location-allocation. The problem is modeled as a goal programming model to create a network that tests samples at a minimum total distance, establishes a minimum number of test sampling centers, and reaches the distance of PCR test laboratories at minimum total distances. The proposed model is applied as a case study for the two cities located in Turkey, and the obtained locations and inventory levels of each location are presented. Besides, different scenarios are examined to understand the structure of the model. As a result, only testing in hospitals will increase the risk of contamination. Since testing at all points will not be possible administratively, it will be ensured that the most appropriate location-allocation decisions are taken by considering all the proposed model's objectives.","PeriodicalId":9689,"journal":{"name":"Central European Journal of Operations Research","volume":"31 1","pages":"1-20"},"PeriodicalIF":1.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9034448/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10569379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Possible new applications of the interactive programming based on aspiration levels—case of pure and mixed strategies 基于期望水平的交互式规划可能的新应用——纯策略和混合策略的情况

IF 1.7 4区管理学

Central European Journal of Operations Research Pub Date : 2022-12-28 DOI: 10.1007/s10100-022-00836-y

Helena Gaspars-Wieloch

引用次数: 2