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    A joint duty cycle scheduling and energy aware routing approach based on evolutionary game for wireless sensor networks

    , Article Iranian Journal of Fuzzy Systems ; Volume 14, Issue 2 , 2017 , Pages 23-44 ; 17350654 (ISSN) Kordafshari, M. S ; Movaghar, A ; Meybodi, M. R ; Sharif University of Technology
    University of Sistan and Baluchestan  2017
    Network throughput and energy conservation are two conflicting important performance metrics for wireless sensor networks. Since these two objectives are in conflict with each other, it is difficult to achieve them simultaneously. In this paper, a joint duty cycle scheduling and energy aware routing approach is proposed based on evolutionary game theory which is called DREG. Making a trade-off cand network throughput, the proposed approach prolongs the network lifetime. The paper is divided into the following sections: Initially, the discussion is presented on how the sensor nodes can be scheduled to sleep or wake up in order to reduce energy consumption in idle listening. The sensor... 

    Analysis of the Evolution of the Strategies in a Two-Tier Supply Chain Using Evolutionary Game Theory

    , M.Sc. Thesis Sharif University of Technology Taki, Setareh (Author) ; Kianfar, Farhad (Supervisor)
    In this thesis a two-tier supply chain containing an upstream supplier and a downstream producer have been modeled. This model presents a replicator interaction in supply chain. In this model supplier has to choose between two different production strategies which provide two types of output-quality. It is obvious the method with better output-quality has more production cost and the one with lower output-quality has lower production cost. The strategy of producer is to choose whether test the production before process it in production line or not. By the tool of evolutionary game theory trends of changing in players' strategies have been modeled and Nash equilibrium points and the types of... 

    Analysis of Group Formation in Social Networks Using Evolutionary Game Theory

    , M.Sc. Thesis Sharif University of Technology Rahimi Gorji, Saeed (Author) ; Ramezanian, Rasoul (Supervisor)
    Evolutionary game theory is a relatively new branch of game theory (in contrast to the classical game theory) which has overcome some of the common problems of the classical version such as highly rational agents assumption. Because of this, it has gained popularity among different sciences. On the other hand, social network as one of the branches of complex networks is a pretty novel research area and has application in several fields. Networks are everywhere and most real-world networks are complex ones. Group formation and evolution are among important subjects in studying social networks and some works has been done in analyzing and modeling them. In this thesis we have presented a... 

    Modeling of Cancer Progression by Using Evolutionary Game Theory

    , M.Sc. Thesis Sharif University of Technology Malekian Boroujeni, Negin (Author) ; Habibi, Jafar (Supervisor)
    Mathematical modeling and computer simulation are powerful tools to help cancer research because they provide a good insight of cancer progression and an efficient framework to test biological hypothesis. Most of the previous studies ignored many intracellular communication between tumor cells. Gap junction is one of the interaction ways between tumor cells which plays a crucial role in cancer progression. In the first phase of this thesis, a model of intracellular communication through gap junction using evolutionary game theory scoring is proposed. In the second phase of this thesis, cancer is modeled by Markov decision process (MDP). Given that considering nutrient level constant is one... 

    Analysis of Seismic Vulnerability Reduction Policies of Residential Buildings Using a Multi-agent Evolutionary Game Model Based on Prospect Theory

    , M.Sc. Thesis Sharif University of Technology Hosseini, Ahmad (Author) ; Kashani, Hamed (Supervisor)
    Due to the vulnerability of urban fabric and residential buildings to earthquakes and considering its destructive social and economic effects on society, the need to adopt appropriate policies to prevent and reduce vulnerability, has been increasingly considered by policy makers. Despite the laws, regulations, incentives and penalties that policymakers have envisioned to prevent unprincipled and unsafe construction, evidence shows that a significant number of new buildings being built in the country are not earthquake resistant and there are many violations in design, implementation and supervision that is done by the stakeholders. To solve this problem, research has been done on the... 

    Integrating evolutionary game theory into an agent-based model of ductal carcinoma in situ: Role of gap junctions in cancer progression

    , Article Computer Methods and Programs in Biomedicine ; Volume 136 , 2016 , Pages 107-117 ; 01692607 (ISSN) Malekian, N ; Habibi, J ; Zangooei, M. H ; Aghakhani, H ; Sharif University of Technology
    Elsevier Ireland Ltd 
    Background and objective There are many cells with various phenotypic behaviors in cancer interacting with each other. For example, an apoptotic cell may induce apoptosis in adjacent cells. A living cell can also protect cells from undergoing apoptosis and necrosis. These survival and death signals are propagated through interaction pathways between adjacent cells called gap junctions. The function of these signals depends on the cellular context of the cell receiving them. For instance, a receiver cell experiencing a low level of oxygen may interpret a received survival signal as an apoptosis signal. In this study, we examine the effect of these signals on tumor growth. Methods We make an...