Pub Date : 2023-01-01DOI: 10.1504/ijor.2023.10058404
Xinhui Zhang, Shuai Wang, Lijian Xiao
{"title":"Data Mining Techniques and Mathematical Models for the Optimal Problem at a State Public University","authors":"Xinhui Zhang, Shuai Wang, Lijian Xiao","doi":"10.1504/ijor.2023.10058404","DOIUrl":"https://doi.org/10.1504/ijor.2023.10058404","url":null,"abstract":"","PeriodicalId":35451,"journal":{"name":"International Journal of Operational Research","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75199609","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}
Pub Date : 2023-01-01DOI: 10.1504/ijor.2023.133743
Ziping Wang, Huafan Ma
Moving manufacturing back to the USA has been in many fierce debates. While many believe that reshoring is beneficial to the USA through creating more jobs, our paper intends to gain more insights into this issue by studying a sourcing game between global firms and governments. Global firms may choose between offshoring and reshoring. Governments, as tax policymakers, aim at improving social welfare. First, our analysis indicates that firms may choose reshoring even if there are cost advantages to offshoring. Secondly, while reshoring may increase employment in the USA, it may also have a negative effect on the overall social welfare. Thirdly, when the labour cost in the USA is moderately higher, the government may launch new tax policies to motivate reshoring and improve social welfare. Finally, numerical examples demonstrate that reshoring improves social welfare in labour-intensive industry, while tax policies may curb such improvement with high tax rates.
{"title":"How to bring manufacturing back - The impact of tax policies on reshoring","authors":"Ziping Wang, Huafan Ma","doi":"10.1504/ijor.2023.133743","DOIUrl":"https://doi.org/10.1504/ijor.2023.133743","url":null,"abstract":"Moving manufacturing back to the USA has been in many fierce debates. While many believe that reshoring is beneficial to the USA through creating more jobs, our paper intends to gain more insights into this issue by studying a sourcing game between global firms and governments. Global firms may choose between offshoring and reshoring. Governments, as tax policymakers, aim at improving social welfare. First, our analysis indicates that firms may choose reshoring even if there are cost advantages to offshoring. Secondly, while reshoring may increase employment in the USA, it may also have a negative effect on the overall social welfare. Thirdly, when the labour cost in the USA is moderately higher, the government may launch new tax policies to motivate reshoring and improve social welfare. Finally, numerical examples demonstrate that reshoring improves social welfare in labour-intensive industry, while tax policies may curb such improvement with high tax rates.","PeriodicalId":35451,"journal":{"name":"International Journal of Operational Research","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135952757","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}
Pub Date : 2023-01-01DOI: 10.1504/ijor.2023.10059156
Mubashir Unnissa Munavar, Jalapathy P
{"title":"A Two-Phase Extended Warranty Strategy for New and Reman Products","authors":"Mubashir Unnissa Munavar, Jalapathy P","doi":"10.1504/ijor.2023.10059156","DOIUrl":"https://doi.org/10.1504/ijor.2023.10059156","url":null,"abstract":"","PeriodicalId":35451,"journal":{"name":"International Journal of Operational Research","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135496947","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}
Pub Date : 2023-01-01DOI: 10.1504/ijor.2023.134778
S.M. Qasim, Jamal A. Farooquie
{"title":"Statistical distribution and analysis of secondary queue of railway passengers","authors":"S.M. Qasim, Jamal A. Farooquie","doi":"10.1504/ijor.2023.134778","DOIUrl":"https://doi.org/10.1504/ijor.2023.134778","url":null,"abstract":"","PeriodicalId":35451,"journal":{"name":"International Journal of Operational Research","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135611026","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}
Pub Date : 2023-01-01DOI: 10.1504/ijor.2023.134783
Tobias Wiens, Christian A. Ullrich
{"title":"Scheduling with team production effects","authors":"Tobias Wiens, Christian A. Ullrich","doi":"10.1504/ijor.2023.134783","DOIUrl":"https://doi.org/10.1504/ijor.2023.134783","url":null,"abstract":"","PeriodicalId":35451,"journal":{"name":"International Journal of Operational Research","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135612087","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}
Pub Date : 2023-01-01DOI: 10.1504/ijor.2023.129158
Vidyottama Jain, R. Raj, S. Dharmaraja
: In this study, we extend upon the model by Haring et al. (2001) by introducing retrial phenomenon in multi-server queueing system. When the most g number of guard channels are available, it allows new calls to join the retrial group. This retrial group is called orbit and can hold a maximum of m retrial calls. The impact of retrial over certain performance measures is numerically investigated. The focus of this work is to construct optimisation problems to determine the optimal number of channels, the optimal number of guard channels and the optimal orbit size. Further, it has been emphasised that the proposed model with retrial phenomenon reduces the blocking probability of new calls in the system.
{"title":"Numerical optimisation of loss system with retrial phenomenon in cellular networks","authors":"Vidyottama Jain, R. Raj, S. Dharmaraja","doi":"10.1504/ijor.2023.129158","DOIUrl":"https://doi.org/10.1504/ijor.2023.129158","url":null,"abstract":": In this study, we extend upon the model by Haring et al. (2001) by introducing retrial phenomenon in multi-server queueing system. When the most g number of guard channels are available, it allows new calls to join the retrial group. This retrial group is called orbit and can hold a maximum of m retrial calls. The impact of retrial over certain performance measures is numerically investigated. The focus of this work is to construct optimisation problems to determine the optimal number of channels, the optimal number of guard channels and the optimal orbit size. Further, it has been emphasised that the proposed model with retrial phenomenon reduces the blocking probability of new calls in the system.","PeriodicalId":35451,"journal":{"name":"International Journal of Operational Research","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85950405","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}
Pub Date : 2023-01-01DOI: 10.1504/ijor.2023.10053952
Santosh Kumar Annabattula Venkata Varaha, A. Sarma, Viswa Janith Paidisetty, A. Umasankar, Anindita Desarkar, Vishwanathan Raman, Mahesh Mahajan
{"title":"Optimizing Production and Operational Cost in a Limestone Mine by MINLP Approach: An End-to-End Case Study","authors":"Santosh Kumar Annabattula Venkata Varaha, A. Sarma, Viswa Janith Paidisetty, A. Umasankar, Anindita Desarkar, Vishwanathan Raman, Mahesh Mahajan","doi":"10.1504/ijor.2023.10053952","DOIUrl":"https://doi.org/10.1504/ijor.2023.10053952","url":null,"abstract":"","PeriodicalId":35451,"journal":{"name":"International Journal of Operational Research","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76218869","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}
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