Based on an integrated refining/chemical plant processing 15 Mt/a of crude and manufacturing 1.0 Mt/a of ethylene under the guideline of＂engaging in refining, olefins and aromatics by whatever appropriate means＂ to ...Based on an integrated refining/chemical plant processing 15 Mt/a of crude and manufacturing 1.0 Mt/a of ethylene under the guideline of＂engaging in refining, olefins and aromatics by whatever appropriate means＂ to maximize the overall value of the integrated refining/chemical plant, it is necessary to concentrate on working on the flow diagram and the solution for mutual supply of materials between the refinery and ethylene plant. After analyzing the feedstock slate, the composition and properties of products, it is proposed to optimize the integrated refming/chemical plant in order to reduce investment and operating cost to realize maximization of the value of the integrated plant.展开更多
This study aims to demonstrate the importance of the role of quantitative methods to maximize corporate profits, where the researcher reviewed the related literature, where most of them pointed out that the industrial...This study aims to demonstrate the importance of the role of quantitative methods to maximize corporate profits, where the researcher reviewed the related literature, where most of them pointed out that the industrial companies, and service providers also apply these methods, especially breakeven point, and linear programming in order to maximize profits.展开更多
This paper considers a firm that sells a durable product with a given market potential.The purpose of the firm is to maximize its profit by determining how much capacity to install before the sales horizon, how many p...This paper considers a firm that sells a durable product with a given market potential.The purpose of the firm is to maximize its profit by determining how much capacity to install before the sales horizon, how many products to produce in accordance with the capacity, and how many products to sell by pricing. Appealing to Pontryagin maximum principle in control theory, the authors obtain the closed-forms of all optimal decisions the firm should make. Furthermore, the optimal production rate and optimal sales rate are both equal to the demand rate, which is caused by the optimal pricing policy during the whole horizon, and the optimal pricing path is increasing with the cost of installing a unit of capacity. Furthermore, numerical analysis reveals the visual impression of the relationship of the parameters.展开更多
This article investigates the order problem in a two-stage supply chain consisting of retail- ers, primary suppliers and backup suppliers. From retailers＇ perspectives, the optimal offering strategies in unidirection...This article investigates the order problem in a two-stage supply chain consisting of retail- ers, primary suppliers and backup suppliers. From retailers＇ perspectives, the optimal offering strategies in unidirectional transshipments are analyzed on the basis of disruption risks in supply chains. With a focus on retailers＇ profits, it develops the decision model of retailers＇ orders in the dual sourcing mode and in the mode of capacity options, to maximize the retailers＇ expected profits. The simulation shows that retailers＇ optimal order decisions are not correlated with the joint disruption probability in the two order modes without service constraints; retailers＇ optimal decisions are influenced by the joint disruption probability in the two order modes with service constraints, and the impact of the joint disruption probability of the primary suppliers＇ optimal order from retailers differs in the two modes. Retailers＇ order decisions in respect of backup suppliers are more sensitive to the changing volumes of transshipments. The contribution of this article is the impact of main parameters on retailers＇ decisions, providing some guidance for enterprises to make order decisions.展开更多
文摘Based on an integrated refining/chemical plant processing 15 Mt/a of crude and manufacturing 1.0 Mt/a of ethylene under the guideline of＂engaging in refining, olefins and aromatics by whatever appropriate means＂ to maximize the overall value of the integrated refining/chemical plant, it is necessary to concentrate on working on the flow diagram and the solution for mutual supply of materials between the refinery and ethylene plant. After analyzing the feedstock slate, the composition and properties of products, it is proposed to optimize the integrated refming/chemical plant in order to reduce investment and operating cost to realize maximization of the value of the integrated plant.
文摘This study aims to demonstrate the importance of the role of quantitative methods to maximize corporate profits, where the researcher reviewed the related literature, where most of them pointed out that the industrial companies, and service providers also apply these methods, especially breakeven point, and linear programming in order to maximize profits.
基金supported by the National Natural Science Foundation of China under Grant Nos.71201027,71272085,71390334,and 11271356973 Project under Grant No.2010CB731400+3 种基金Humanity and Social Science Youth Foundation of Ministry of Education of China under Grant No.12YJC630260Guangdong Natural Science Foundation under Grant No.S2012040007919Foundation for Distinguished Young Talents in Higher Education of Guangdong under Grant No.LYM11121the Open Fund of Chongqing Key Laboratory of Logistics under Grant No.CQKLL12003
文摘This paper considers a firm that sells a durable product with a given market potential.The purpose of the firm is to maximize its profit by determining how much capacity to install before the sales horizon, how many products to produce in accordance with the capacity, and how many products to sell by pricing. Appealing to Pontryagin maximum principle in control theory, the authors obtain the closed-forms of all optimal decisions the firm should make. Furthermore, the optimal production rate and optimal sales rate are both equal to the demand rate, which is caused by the optimal pricing policy during the whole horizon, and the optimal pricing path is increasing with the cost of installing a unit of capacity. Furthermore, numerical analysis reveals the visual impression of the relationship of the parameters.
基金supported by the National Natural Science Foundation of China under Grant Nos.71771080,71172194,71521061,71790593,71642006,71473155,71390335,71571065Hunan Provincial Innovation Foundation for Postgraduate under Grant No.CX2016B078
文摘This article investigates the order problem in a two-stage supply chain consisting of retail- ers, primary suppliers and backup suppliers. From retailers＇ perspectives, the optimal offering strategies in unidirectional transshipments are analyzed on the basis of disruption risks in supply chains. With a focus on retailers＇ profits, it develops the decision model of retailers＇ orders in the dual sourcing mode and in the mode of capacity options, to maximize the retailers＇ expected profits. The simulation shows that retailers＇ optimal order decisions are not correlated with the joint disruption probability in the two order modes without service constraints; retailers＇ optimal decisions are influenced by the joint disruption probability in the two order modes with service constraints, and the impact of the joint disruption probability of the primary suppliers＇ optimal order from retailers differs in the two modes. Retailers＇ order decisions in respect of backup suppliers are more sensitive to the changing volumes of transshipments. The contribution of this article is the impact of main parameters on retailers＇ decisions, providing some guidance for enterprises to make order decisions.
