Game Theory
Hamed Jafari
Abstract
Purpose: In this research, a recyclable waste is used to manufacture a specific product. For this reason, a supply chain is considered containing manufacturer, recycler, and waste warehouse. First, the customers’ demand for the considered product is determined based on its price. Then, the manufacturer ...
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Purpose: In this research, a recyclable waste is used to manufacture a specific product. For this reason, a supply chain is considered containing manufacturer, recycler, and waste warehouse. First, the customers’ demand for the considered product is determined based on its price. Then, the manufacturer produces it from a waste with specific recyclability rate. The waste warehouse collects the waste and the recycler recycles it. The manufacturer meets his requirements through two different channels. He can procure the non-recycled waste from the waste warehouse and then recycles it himself, or can buy the recycled waste from the recycler. The manufacturer selects these channels based on the established situations.Methodology: The game theory is applied to make the decisions under two considered channels. In this setting, a Stackelberg game is developed based on the competitive situation established among the members, where the manufacturer has higher decision power than the waste warehouse and recycler.Findings: Eventually, the given strategies are discussed and the obtained results are presented. Results indicate that the manufacturer selects each channel as a threshold is met. Moreover, more recyclability rate of the considered waste leads to higher profits for the members.Originality/Value: In this research, to provide the waste materials required for producing a product, the game-theoretic approach as well as the concept of the channel-selection are used. It can be stated that this issue has been proposed for the first time in the literature.
Game Theory
Mohammad Tabrizian; Hosein Seifi; Mohamad Kazem Sheikh-al-Eslami; Hamidreza Shahmirzad
Abstract
Purpose: Finding the best situation for the expected profit by each of the participants (players) in the secondary auction market of financial congestion transmission rights.Methodology: From the point of view of game theory, finding at least one Nash equilibrium point for this competition takes into ...
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Purpose: Finding the best situation for the expected profit by each of the participants (players) in the secondary auction market of financial congestion transmission rights.Methodology: From the point of view of game theory, finding at least one Nash equilibrium point for this competition takes into account the various constraints of the secondary auction market.Findings: This paper study the issue of financial transmission congestion contracts then uses the game theory to analyze the short-term (weekly) secondary FTR markets, in which the players manage the transmission risk through optimal biddings.Originality/Value: Congestion risk management is one of the most important topics of transmission network management in restructured power systems and electricity markets in the world, especially markets based on regional or local pricing, whose main tool is transmission financial contracts. In the other scientific articles published so far, mainly the modeling and analysis of the primary auction markets of transission congestion financial rights have been discussed, and the secondary auction markets of these contracts, which have a different pattern, have not been scientifically analyzed. The main innovation of this article is to pay attention to this issue using application of game theory.
Game Theory
Hamed Jafari
Abstract
Purpose: The purpose of this paper is to consider products such as disposable tableware produced from plastic waste. In this setting, plastic waste is collected, recycled, and reused. In this research, a supply chain including waste depot, recycler, and manufacturer is considered in which plastic waste ...
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Purpose: The purpose of this paper is to consider products such as disposable tableware produced from plastic waste. In this setting, plastic waste is collected, recycled, and reused. In this research, a supply chain including waste depot, recycler, and manufacturer is considered in which plastic waste is reused in order to manufacture a product. Under this supply chain, the waste depot collects non-recycled plastic waste and the recycler recycles it. Then, the manufacturer uses recycled plastic waste to produce final product and meet customer demand. In this structure, the waste depot, recycler, and manufacturer set the price of non-recycled plastic waste, the price of recycled plastic waste, and the price of final product, respectively.Methodology: The game theory is used to make the decisions under the considered supply chain. It is assumed that the decision power of the manufacturer is more than of the waste depot and recycler. In this setting, Stackelberg game-theoretic model is established in order to specify the prices adopted by the members.Findings: Results indicate that decision powers of the waste depot and recycler have no effect on the price and demand of final product. The profits allocated to the manufacturer are the same when decision powers of the waste depot and recycler are different. Moreover, more the price elasticity of the demand for final product leads to lower profits for the members.Originality/Value: Using plastic waste is an effective approach to sustain environment and reduce pollution. In this research, plastic waste is used to produce products such as disposable tableware in a supply chain including manufacturer, recycler and waste depot. The game theory approach is also used to make decisions. To our knowledge, the idea of applying the game theory to use plastic waste in production of products under the considered supply chain has been raised for the first time in the literature.
Game Theory
Hamidreza Navidi; Mahdi Ghasemi
Abstract
In the real world, the diffusion of some contagions at the same time on the social network is very important. Due to a large number of contagions that have been diffused on a social network at the same time, in order to reduce the model parameters and also being scalable, the contagions have been grouped ...
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In the real world, the diffusion of some contagions at the same time on the social network is very important. Due to a large number of contagions that have been diffused on a social network at the same time, in order to reduce the model parameters and also being scalable, the contagions have been grouped and clustered and also all the clusters have been set equal on some of the researches, While this assumption is not acceptable and far from the facts of the real world. To eliminate and fix this issue in this thesis, we try to elaborate the different categories of contagions and consider, analyze and study the whole story as evolutionary game theory and will calculate its evolution dynamics of contagions and evolutionarily stable strategy. Evolutionary dynamics and evolutionarily stable of the contagions show the impact of a contagion in the process of diffusion from the point of view of users in two consecutive interval timing and whether it is promoted or suppressed.