{"title":"$ l^{p,q/2} $-Singular values of a real partially symmetric rectangular tensor","authors":"Jianxing Zhao","doi":"10.3934/jimo.2023111","DOIUrl":"https://doi.org/10.3934/jimo.2023111","url":null,"abstract":"","PeriodicalId":16022,"journal":{"name":"Journal of Industrial and Management Optimization","volume":"50 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70081368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Government intervention in a recycling supply chain system: A strategy to make sustainable and clean environment","authors":"Mritunjoy Saha, R. Giri","doi":"10.3934/jimo.2023114","DOIUrl":"https://doi.org/10.3934/jimo.2023114","url":null,"abstract":"","PeriodicalId":16022,"journal":{"name":"Journal of Industrial and Management Optimization","volume":"60 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70081407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Previous studies believed that reducing search costs would make niches better catered to consumers, and therefore, more sellers would switch to producing niches, thus leading to the long tail effect. However, although E-commerce and related technologies have brought search costs down enough, plenty of broad products are still on the market. To address this, by introducing platform decision, this study constructs a three-way game model to analyze the proportion of broad products on the platform. The results show that when search costs are sufficiently small, the proportion of niches will decrease with the further reduction of search costs, which is inconsistent with the long tail effect. By adding platform decision, this study summarizes the relationship between search costs and the long tail effect more comprehensively and explains that a large number of broad products on the market is deliberately arranged by the platform. In addition, this article studied the extended scenario with a recommendation mechanism to supplement the basic model in which consumers search randomly. The study found that the findings in the basic model were strengthened.
{"title":"Broad or niche? decision-making options based on e-commerce platforms","authors":"Ruwen Tan, Rujin Liao, Jing Zhang, Minjiu Yu, Qinhong Yu","doi":"10.3934/jimo.2023137","DOIUrl":"https://doi.org/10.3934/jimo.2023137","url":null,"abstract":"Previous studies believed that reducing search costs would make niches better catered to consumers, and therefore, more sellers would switch to producing niches, thus leading to the long tail effect. However, although E-commerce and related technologies have brought search costs down enough, plenty of broad products are still on the market. To address this, by introducing platform decision, this study constructs a three-way game model to analyze the proportion of broad products on the platform. The results show that when search costs are sufficiently small, the proportion of niches will decrease with the further reduction of search costs, which is inconsistent with the long tail effect. By adding platform decision, this study summarizes the relationship between search costs and the long tail effect more comprehensively and explains that a large number of broad products on the market is deliberately arranged by the platform. In addition, this article studied the extended scenario with a recommendation mechanism to supplement the basic model in which consumers search randomly. The study found that the findings in the basic model were strengthened.","PeriodicalId":16022,"journal":{"name":"Journal of Industrial and Management Optimization","volume":"60 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":"136367264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Dynamic analysis of product and process innovation for a price-regulated firm in a market exhibiting network externality","authors":"Shoude Li, Changzhi Wu","doi":"10.3934/jimo.2023133","DOIUrl":"https://doi.org/10.3934/jimo.2023133","url":null,"abstract":"","PeriodicalId":16022,"journal":{"name":"Journal of Industrial and Management Optimization","volume":"34 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":"134981060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper, we introduce a new class of generalized convexity for an $ E $-differentiable multiobjective variational problem, and to solve this problem, an associated multiobjective $ E $-variational problem is formulated with the help of an $ E $-operator. The necessary and sufficient optimality conditions are derived under the assumption of $ E $-convexity. The so-called Wolfe and Mond-Weir $ E $-dual problems are defined for the considered $ E $-differentiable multiobjective variational programming problem, and several Wolfe and Mond-Weir $ E $-duality theorems are derived under the $ E $-convexity assumption. Furthermore, to emphasize the significance of the results of this study, we considered a cake-eating problem, and the solution obtained by constructing its associated $ E $-differentiable problem and the sufficiency theorem. Throughout the paper, non-trivial illustrations are presented to support the findings.
本文引入了$ E $可微多目标变分问题的一类新的广义凸性，并利用$ E $-算子构造了相应的$ E $-变分问题。在E -凸性的假设下，导出了最优性的充分必要条件。针对所考虑的$ E $可微多目标变分规划问题，定义了所谓的Wolfe和Mond-Weir $ E $-对偶问题，并在$ E $-凸性假设下导出了几个Wolfe和Mond-Weir $ E $-对偶定理。进一步，为了强调本研究结果的意义，我们考虑了一个吃蛋糕问题，并通过构造其关联的$ E $可微问题和充分性定理得到了解。在整个论文中，提出了非琐碎的插图来支持研究结果。
{"title":"$ E $-Optimality and $ E $-duality results for multiobjective variational problems and application to the cake-eating problem","authors":"Nisha Pokharna, Indira P. Tripathi","doi":"10.3934/jimo.2023146","DOIUrl":"https://doi.org/10.3934/jimo.2023146","url":null,"abstract":"In this paper, we introduce a new class of generalized convexity for an $ E $-differentiable multiobjective variational problem, and to solve this problem, an associated multiobjective $ E $-variational problem is formulated with the help of an $ E $-operator. The necessary and sufficient optimality conditions are derived under the assumption of $ E $-convexity. The so-called Wolfe and Mond-Weir $ E $-dual problems are defined for the considered $ E $-differentiable multiobjective variational programming problem, and several Wolfe and Mond-Weir $ E $-duality theorems are derived under the $ E $-convexity assumption. Furthermore, to emphasize the significance of the results of this study, we considered a cake-eating problem, and the solution obtained by constructing its associated $ E $-differentiable problem and the sufficiency theorem. Throughout the paper, non-trivial illustrations are presented to support the findings.","PeriodicalId":16022,"journal":{"name":"Journal of Industrial and Management Optimization","volume":"70 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":"135319726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Peiya Zhu, Xiaofei Qian, Xinbao Liu, Panos M. Pardalos
{"title":"Sales or rentals? price and service decisions for electric vehicle manufacturers","authors":"Peiya Zhu, Xiaofei Qian, Xinbao Liu, Panos M. Pardalos","doi":"10.3934/jimo.2023116","DOIUrl":"https://doi.org/10.3934/jimo.2023116","url":null,"abstract":"","PeriodicalId":16022,"journal":{"name":"Journal of Industrial and Management Optimization","volume":"15 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":"135400794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Robust optimal proportional reinsurance and investment strategy for an insurer and a reinsurer with delay and jumps","authors":"Qiang Zhang","doi":"10.3934/jimo.2023036","DOIUrl":"https://doi.org/10.3934/jimo.2023036","url":null,"abstract":"","PeriodicalId":16022,"journal":{"name":"Journal of Industrial and Management Optimization","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70079390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Competition and cooperation strategiesin the supply chains with remanufacturing and refurbishing","authors":"Jing Liu, K. Li, Nenggui Zhao, H. Fu","doi":"10.3934/jimo.2023049","DOIUrl":"https://doi.org/10.3934/jimo.2023049","url":null,"abstract":"","PeriodicalId":16022,"journal":{"name":"Journal of Industrial and Management Optimization","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70079913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Modelling and a hybrid genetic algorithm for the equity-oriented worker assignment problem in seru production systems","authors":"Yinghui Wu, Shaoyu Zeng, Yang Yu","doi":"10.3934/jimo.2023068","DOIUrl":"https://doi.org/10.3934/jimo.2023068","url":null,"abstract":"","PeriodicalId":16022,"journal":{"name":"Journal of Industrial and Management Optimization","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70080036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A new vendor-managed inventory four-tier model based on reducing environmental impacts and optimal suppliers selection under uncertainty","authors":"Azam Modares, N. M. Farimani, F. Dehghanian","doi":"10.3934/jimo.2023074","DOIUrl":"https://doi.org/10.3934/jimo.2023074","url":null,"abstract":"","PeriodicalId":16022,"journal":{"name":"Journal of Industrial and Management Optimization","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70080184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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