The Experts below are selected from a list of 18819 Experts worldwide ranked by ideXlab platform
Nirwan Ansari - One of the best experts on this subject based on the ideXlab platform.
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Profit Maximization for Geographically Dispersed Green Data Centers
IEEE Transactions on Smart Grid, 2018Co-Authors: Abbas Kiani, Nirwan AnsariAbstract:This paper aims at maximizing the Profit associated with running geographically dispersed green data centers, which offer multiple classes of service. To this end, we formulate an optimization framework which relies on the accuracy of the G/D/1 queue in characterizing the workload distribution, and taps on the merits of the workload’s decomposition into green and brown workloads served by green and brown energy resources, respectively. Moreover, we take into account not only the service level agreements between the data centers and clients but also different deregulated electricity markets of data centers located at different regions. We prove the convexity of our optimization problem, and the performance of the proposed workload distribution strategy is evaluated via extensive simulations.
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toward hierarchical mobile edge computing an auction based Profit Maximization approach
IEEE Internet of Things Journal, 2017Co-Authors: Abbas Kiani, Nirwan AnsariAbstract:The multitiered concept of Internet of Things (IoT) devices, cloudlets, and clouds is facilitating a user-centric IoT. However, in such three tier network, it is still desirable to investigate efficient strategies to offer the computing, storage, and communications resources to the users. To this end, this paper proposes a new hierarchical model by introducing the concept of field , shallow , and deep cloudlets where the cloudlet tier itself is designed in three hierarchical levels based on the principle of LTE-advanced backhaul network. Accordingly, we explore a two time scale approach in which the computing resources are offered in an auction-based Profit Maximization manner and then the communications resources are allocated to satisfy the users’ quality of service.
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Towards Hierarchical Mobile Edge Computing: An Auction-Based Profit Maximization Approach
IEEE Internet of Things Journal, 2017Co-Authors: Abbas Kiani, Nirwan AnsariAbstract:The multi-tiered concept of Internet of Things (IoT) devices, cloudlets and clouds is facilitating a user-centric IoT. However, in such three tier network, it is still desirable to investigate efficient strategies to offer the computing, storage and communications resources to the users. To this end, this paper proposes a new hierarchical model by introducing the concept of field, shallow, and deep cloudlets where the cloudlet tier itself is designed in three hierarchical levels based on the principle of LTE-Advanced backhaul network. Accordingly, we explore a two time scale approach in which the computing resources are offered in an auction-based Profit Maximization manner and then the communications resources are allocated to satisfy the users’ QoS.
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primal Profit Maximization avatar placement for mobile edge computing
International Conference on Communications, 2016Co-Authors: Nirwan AnsariAbstract:We propose a cloudlet network architecture to bring the computing resources from the centralized cloud to the edge. Thus, each User Equipment (UE) can communicate with its Avatar, a software clone located in a cloudlet, and can thus lower the end-to-end (E2E) delay. However, UEs are moving over time, and so the low E2E delay may not be maintained if UEs' Avatars stay in their original cloudlets. Thus, live Avatar migration (i.e., migrating a UE's Avatar to a suitable cloudlet based on the UE's location) is enabled to maintain the low E2E delay between each UE and its Avatar. On the other hand, the migration itself incurs extra overheads in terms of resources of the Avatar, which compromise the performance of applications running in the Avatar. By considering the gain (i.e., the E2E delay reduction) and the cost (i.e., the migration overheads) of the live Avatar migration, we propose a Profit Maximization Avatar pLacement (PRIMAL) strategy for the cloudlet network in order to optimize the tradeoff between the migration gain and the migration cost by selectively migrating the Avatars to their optimal locations. Simulation results demonstrate that as compared to the other two strategies (i.e., Follow Me Avatar and Static), PRIMAL maximizes the Profit in terms of maintaining the low average E2E delay between UEs and their Avatars and minimizing the migration cost simultaneously.
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PRIMAL: Profit Maximization Avatar pLacement for mobile edge computing
2016 IEEE International Conference on Communications, ICC 2016, 2016Co-Authors: Xiang Sun, Nirwan AnsariAbstract:We propose a cloudlet network architecture to bring the computing resources from the centralized cloud to the edge. Thus, each User Equipment (UE) can communicate with its Avatar, a software clone located in a cloudlet, with lower end-to-end (E2E) delay. However, UEs are moving over time, and so the low E2E delay may not be maintained if UEs' Avatars stay in their original cloudlets. Thus, live Avatar migration (i.e., migrating a UE's Avatar to a suitable cloudlet based on the UE's location) is enabled to maintain low E2E delay between each UE and its Avatar. On the other hand, the migration itself incurs extra overheads in terms of resources of the Avatar, which compromise the performance of applications running in the Avatar. By considering the gain (i.e., the E2E delay reduction) and the cost (i.e., the migration overheads) of the live Avatar migration, we propose a Profit Maximization Avatar pLacement (PRIMAL) strategy for the cloudlet network in order to optimize the tradeoff between the migration gain and the migration cost by selectively migrating the Avatars to their optimal locations. Simulation results demonstrate that as compared to the other two strategies (i.e., Follow Me Avatar and Static), PRIMAL maximizes the Profit in terms of maintaining the low average E2E delay between UEs and their Avatars and minimizing the migration cost simultaneously.
Yasuhito Tanaka - One of the best experts on this subject based on the ideXlab platform.
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free entry oligopoly cournot bertrand and relative Profit Maximization
International journal of business and economics, 2015Co-Authors: Atsuhiro Satoh, Yasuhito TanakaAbstract:We study a symmetric free entry oligopoly in which firms produce differentiated goods so as to maximize their relative Profits. The relative Profit of each firm is the difference between its Profit and the average of the Profits of other firms. We show that whether firms determine their outputs or prices, the equilibrium price when firms maximize their relative Profits is lower than the equilibrium price when firms maximize their absolute Profits, but the equilibrium number of firms under relative Profit Maximization is smaller than the equilibrium number of firms under absolute Profit Maximization. This is because each firm is more aggressive and produces larger output under relative Profit Maximization than under absolute Profit Maximization.
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relative Profit Maximization and bertrand equilibrium with quadratic cost functions
Research Papers in Economics, 2014Co-Authors: Atsuhiro Satoh, Yasuhito TanakaAbstract:We study the Bertrand equilibrium in duopoly in which two firms produce a homogeneous good under quadratic cost functions, and they seek to maximize the weighted sum of their absolute and relative Profits. We show that there exists a range of the equilibrium price in duopolistic equilibria. This range of equilibrium price is narrower and lower than the range of the equilibrium price in duopolistic equilibria under pure absolute Profit Maximization, and the larger the weight on the relative Profit, the narrower and lower the range of the equilibrium price. In this sense relative Profit Maximization by the firms is more aggressive than absolute Profit Maximization.
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irrelevance of conjectural variations in duopoly under relative Profit Maximization and consistent conjectures
Journal of Economics and Management, 2014Co-Authors: Atsuhiro Satoh, Yasuhito TanakaAbstract:We study the equilibrium with quantity setting behavior and price setting behavior of firms in duopoly under relative Profit Maximization with constant conjectural variations, and show mainly the following results. 1) Conjectural variations of firms are irrelevant to the equilibrium of a duopoly. 2) Quantity setting behavior and price setting behavior are equivalent with any conjectural variation of each firm. 3) Any pair of conjectural variations of firms which satisfies some relation is consistent. In particular, if firms have the same cost functions or the cost functions are linear, and both firms determine the outputs or both firms determine the prices, any conjectural variations which are common to both firms are consistent. Therefore, there are multiple consistent conjectures.
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equivalance of cournot and bertrand equilibria in differentiated duopoly under relative Profit Maximization with linear demand
MPRA Paper, 2014Co-Authors: Yasuhito TanakaAbstract:In this note we investigate the relation between a Cournot equilibrium and a Bertrand equilibrium in a duopoly with differentiated goods in which each firm maximizes its relative Profit that is the difference between its Profit and the Profit of the rival firm. We will show that when firms maximize relative Profits, a Cournot equilibrium and a Bertrand equilibrium coincide, and the equilibrium outputs under relative Maximization is larger than both of the equilibrium outputs at the Cournot equilibrium and the Bertrand equilibrium under absolute Profit Maximization. We assume that demand functions for the goods of the firms are linear, the marginal costs of the firms are constant and the fixed costs are zero.
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free entry oligopoly cournot bertrand and
2014Co-Authors: Atsuhiro Satoh, Yasuhito TanakaAbstract:We study a symmetric free entry oligopoly in which firms produce differentiated goods so as to maximize their relative Profits. The relative Profit of each firm is the difference between its Profit and the average of the Profits of other firms. We show that, whether firms determine their outputs or prices, the equilibrium price when firms maximize their relative Profits is lower than the equilibrium price when firms maximize their absolute Profits, but the equilibrium number of firms under relative Profit Maximization is smaller than the equilibrium number of firms under absolute Profit Maximization. This is because each firm is more aggressive and produces larger output under relative Profit Maximization than under absolute Profit Maximization.
Abbas Kiani - One of the best experts on this subject based on the ideXlab platform.
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Profit Maximization for Geographically Dispersed Green Data Centers
IEEE Transactions on Smart Grid, 2018Co-Authors: Abbas Kiani, Nirwan AnsariAbstract:This paper aims at maximizing the Profit associated with running geographically dispersed green data centers, which offer multiple classes of service. To this end, we formulate an optimization framework which relies on the accuracy of the G/D/1 queue in characterizing the workload distribution, and taps on the merits of the workload’s decomposition into green and brown workloads served by green and brown energy resources, respectively. Moreover, we take into account not only the service level agreements between the data centers and clients but also different deregulated electricity markets of data centers located at different regions. We prove the convexity of our optimization problem, and the performance of the proposed workload distribution strategy is evaluated via extensive simulations.
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toward hierarchical mobile edge computing an auction based Profit Maximization approach
IEEE Internet of Things Journal, 2017Co-Authors: Abbas Kiani, Nirwan AnsariAbstract:The multitiered concept of Internet of Things (IoT) devices, cloudlets, and clouds is facilitating a user-centric IoT. However, in such three tier network, it is still desirable to investigate efficient strategies to offer the computing, storage, and communications resources to the users. To this end, this paper proposes a new hierarchical model by introducing the concept of field , shallow , and deep cloudlets where the cloudlet tier itself is designed in three hierarchical levels based on the principle of LTE-advanced backhaul network. Accordingly, we explore a two time scale approach in which the computing resources are offered in an auction-based Profit Maximization manner and then the communications resources are allocated to satisfy the users’ quality of service.
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Towards Hierarchical Mobile Edge Computing: An Auction-Based Profit Maximization Approach
IEEE Internet of Things Journal, 2017Co-Authors: Abbas Kiani, Nirwan AnsariAbstract:The multi-tiered concept of Internet of Things (IoT) devices, cloudlets and clouds is facilitating a user-centric IoT. However, in such three tier network, it is still desirable to investigate efficient strategies to offer the computing, storage and communications resources to the users. To this end, this paper proposes a new hierarchical model by introducing the concept of field, shallow, and deep cloudlets where the cloudlet tier itself is designed in three hierarchical levels based on the principle of LTE-Advanced backhaul network. Accordingly, we explore a two time scale approach in which the computing resources are offered in an auction-based Profit Maximization manner and then the communications resources are allocated to satisfy the users’ QoS.
Dale T Miller - One of the best experts on this subject based on the ideXlab platform.
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Profit Maximization versus disadvantageous inequality the impact of self categorization
Journal of Behavioral Decision Making, 2005Co-Authors: Stephen M Garcia, Avishalom Tor, Max H Bazerman, Dale T MillerAbstract:Choice behavior researchers (e.g., Bazerman, Loewenstein, & White, 1992) have found that individuals tend to choose a more lucrative but disadvantageously unequal payoff (e.g., self—$600/other—$800) over a less Profitable but equal one (e.g., self—$500/ other—$500); greater Profit trumps interpersonal social comparison concerns in the choice setting. We suggest, however, that self-categorization (e.g., Hogg, 2000) can shift interpersonal social comparison concerns to the intergroup level and make trading disadvantageous inequality for greater Profit more difficult. Studies 1–3 show that Profit Maximization diminishes when recipients belong to different social categories (e.g., genders, universities). Study 2 further implicates self-categorization, as selfcategorized individuals tend to forgo Profit whether making a choice for themselves or another ingroup member. Study 3, moreover, reveals that social categorization alone is not sufficient to diminish Profit Maximization; individuals must self-categorize and identify with their categorization. Copyright # 2005 John Wiley & Sons, Ltd.
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Profit Maximization versus disadvantageous inequality the impact of self categorization
Social Science Research Network, 2004Co-Authors: Stephen M Garcia, Avishalom Tor, Max H Bazerman, Dale T MillerAbstract:Research on the separate versus joint evaluation of payoff allocations (e.g., Bazerman, Loewenstein, & White, 1992) has found that individuals prefer an equitable allocation between themselves and another person (e.g., self-$500/other-$500) to an alternative allocation where they receive a higher absolute but disadvantageously unequal outcome (e.g., self-$600/other-$800) when these alternatives are evaluated separately. On the other hand, when evaluating these alternatives jointly, individuals show the opposite pattern, preferring Profit Maximization. This paper argues, however, that the more rational preference for Profit Maximization in joint evaluation is limited to those circumstances where the payoff recipients share a social identity. When social identity differs between recipients, individuals no longer prefer Profit Maximization under joint evaluation. Four experiments support the hypothesis that overlaying social categories onto payoff recipients shifts preferences from Profit Maximization to equitable allocation, even under joint evaluation. Implications for organizations, which are inevitably rife with different social identities, are discussed.
Atsuhiro Satoh - One of the best experts on this subject based on the ideXlab platform.
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free entry oligopoly cournot bertrand and relative Profit Maximization
International journal of business and economics, 2015Co-Authors: Atsuhiro Satoh, Yasuhito TanakaAbstract:We study a symmetric free entry oligopoly in which firms produce differentiated goods so as to maximize their relative Profits. The relative Profit of each firm is the difference between its Profit and the average of the Profits of other firms. We show that whether firms determine their outputs or prices, the equilibrium price when firms maximize their relative Profits is lower than the equilibrium price when firms maximize their absolute Profits, but the equilibrium number of firms under relative Profit Maximization is smaller than the equilibrium number of firms under absolute Profit Maximization. This is because each firm is more aggressive and produces larger output under relative Profit Maximization than under absolute Profit Maximization.
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relative Profit Maximization and bertrand equilibrium with quadratic cost functions
Research Papers in Economics, 2014Co-Authors: Atsuhiro Satoh, Yasuhito TanakaAbstract:We study the Bertrand equilibrium in duopoly in which two firms produce a homogeneous good under quadratic cost functions, and they seek to maximize the weighted sum of their absolute and relative Profits. We show that there exists a range of the equilibrium price in duopolistic equilibria. This range of equilibrium price is narrower and lower than the range of the equilibrium price in duopolistic equilibria under pure absolute Profit Maximization, and the larger the weight on the relative Profit, the narrower and lower the range of the equilibrium price. In this sense relative Profit Maximization by the firms is more aggressive than absolute Profit Maximization.
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irrelevance of conjectural variations in duopoly under relative Profit Maximization and consistent conjectures
Journal of Economics and Management, 2014Co-Authors: Atsuhiro Satoh, Yasuhito TanakaAbstract:We study the equilibrium with quantity setting behavior and price setting behavior of firms in duopoly under relative Profit Maximization with constant conjectural variations, and show mainly the following results. 1) Conjectural variations of firms are irrelevant to the equilibrium of a duopoly. 2) Quantity setting behavior and price setting behavior are equivalent with any conjectural variation of each firm. 3) Any pair of conjectural variations of firms which satisfies some relation is consistent. In particular, if firms have the same cost functions or the cost functions are linear, and both firms determine the outputs or both firms determine the prices, any conjectural variations which are common to both firms are consistent. Therefore, there are multiple consistent conjectures.
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free entry oligopoly cournot bertrand and
2014Co-Authors: Atsuhiro Satoh, Yasuhito TanakaAbstract:We study a symmetric free entry oligopoly in which firms produce differentiated goods so as to maximize their relative Profits. The relative Profit of each firm is the difference between its Profit and the average of the Profits of other firms. We show that, whether firms determine their outputs or prices, the equilibrium price when firms maximize their relative Profits is lower than the equilibrium price when firms maximize their absolute Profits, but the equilibrium number of firms under relative Profit Maximization is smaller than the equilibrium number of firms under absolute Profit Maximization. This is because each firm is more aggressive and produces larger output under relative Profit Maximization than under absolute Profit Maximization.
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relative Profit Maximization and bertrand equilibrium with quadratic cost functions
Economics and Business Letters, 2013Co-Authors: Atsuhiro Satoh, Yasuhito TanakaAbstract:We study the Bertrand equilibrium in duopoly in which two firms produce a homogeneous good under quadratic cost functions, and they seek to maximize the weighted sum of their absolute and relative Profits. We show that there exists a range of the equilibrium prices in duopolistic equilibria. This range of equilibrium prices is narrower and lower than the range of the equilibrium prices in duopolistic equilibria under pure absolute Profit Maximization, and the larger the weight on the relative Profit, the narrower and lower the range of the equilibrium prices. In this sense relative Profit Maximization is more aggressive than absolute Profit Maximization.
