In this paper, we propose a non-cooperative differential game theory based resource allocation approach for the network security risk assessment. For the risk assessment, the resource will be used for risk assess, inc...In this paper, we propose a non-cooperative differential game theory based resource allocation approach for the network security risk assessment. For the risk assessment, the resource will be used for risk assess, including response cost and response negative cost. The whole assessment process is considered as a differential game for optimal resource control. The proposed scheme can be obtained through the Nash Equilibrium. It is proved that the game theory based algorithm is applicable and the optimal resource level can be achieved based on the proposed algorithm.展开更多
<p> <span style="font-family:Verdana;">Under the Nigerian privatisation programme, the issues of risk allocation and mitigation were never always properly handled. Historically, there had always ...<p> <span style="font-family:Verdana;">Under the Nigerian privatisation programme, the issues of risk allocation and mitigation were never always properly handled. Historically, there had always been a tendency to dump all the project risks on the private sector partner without properly evaluating whether it was capable of managing them. Extant literature has shown that where the comparative advantages of parties to handle risks are not properly taken into consideration, the allocation of risk is unbalanced and the tendency for the project to run into difficulties and/or fail increases. This paper looks at the electric power sector privatisation, distilling how key project risks were handled under the exercise. This should be a good pointer as to whether the privatisation exercise wo</span><span style="font-family:Verdana;">u</span><span style="font-family:Verdana;">ld be a success in the long run.</span><span></span> </p>展开更多
Public-Private Partnership （PPP） financing modalily has the ability of alleviating the budgetary pressure to the government. fulfilling the need of infrastructure development, and improving the efficiency of investm...Public-Private Partnership （PPP） financing modalily has the ability of alleviating the budgetary pressure to the government. fulfilling the need of infrastructure development, and improving the efficiency of investment and operation. However, the negotiations between the government and the investors are time-consuming and costly, due to the perspective differences in risk allocation and revenue distribution. Disputes often arise during concession period because of changes in various risks or non-performance of its obligalions, especially when one sector was forced to accept the requirements by the other as a result of the unequal status, the project urgency or other reasons. Only a few PPP projects in China could perform successfully. There is therefore a need to develop an equitable risk allocation mechanism for the delivery of PPP projects in China so as to improve the efficiency of private investment in infrastructure development.展开更多
In the context of risk measures,the capital allocation problem is widely studied in the literature where different approaches have been developed,also in connection with cooperative game theory and systemic risk.Altho...In the context of risk measures,the capital allocation problem is widely studied in the literature where different approaches have been developed,also in connection with cooperative game theory and systemic risk.Although static capital allocation rules have been extensively studied in the recent years,only few works deal with dynamic capital allocations and its relation with BSDEs.Moreover,all those works only examine the case of an underneath risk measure satisfying cash-additivity and,moreover,a large part of them focuses on the specific case of the gradient allocation where Gateaux differentiability is assumed.The main goal of this paper is,instead,to study general dynamic capital allocations associated to cash-subadditive risk measures,generalizing the approaches already existing in the literature and motivated by the presence of(ambiguity on)interest rates.Starting from an axiomatic approach,we then focus on the case where the underlying risk measures are induced by BSDEs whose drivers depend also on the yvariable.In this setting,we surprisingly find that the corresponding capital allocation rules solve special kinds of Backward Stochastic Volterra Integral Equations(BSVIEs).展开更多
With the help of advanced information technology,real-time monitoring and control levels of cyber-physical distribution systems(CPDS)have been significantly improved.However due to the deep integration of cyber and ph...With the help of advanced information technology,real-time monitoring and control levels of cyber-physical distribution systems(CPDS)have been significantly improved.However due to the deep integration of cyber and physical systems,attackers could still threaten the stable operation of CPDS by launching cyber-attacks,such as denial-of-service(DoS)attacks.Thus,it is necessary to study the CPDS risk assessment and defense resource allocation methods under DoS attacks.This paper analyzes the impact of DoS attacks on the physical system based on the CPDS fault self-healing control.Then,considering attacker and defender strategies and attack damage,a CPDS risk assessment framework is established.Furthermore,risk assessment and defense resource allocation methods,based on the Stackelberg dynamic game model,are proposed under conditions in which the cyber and physical systems are launched simultaneously.Finally,a simulation based on an actual CPDS is performed,and the calculation results verify the effectiveness of the algorithm.展开更多
Traditional profit allocation solutions cannot be effectively applied to the practice for the limitations in their premises and principles. This paper based on the practical processes of virtual supply chain performs ...Traditional profit allocation solutions cannot be effectively applied to the practice for the limitations in their premises and principles. This paper based on the practical processes of virtual supply chain performs analysis on major factors relative to cost and risk which effect the profit allocation among the partners, and then proposes the quantitative relations between the factors and profit allocation. The relations can serve as a base for further research on extensive profit allocation model.展开更多
In this study, we propose new dynamic spectrum allocations in multi-cells and intra-cell of cognitive network to enhance system performance in terms of decreasing probability of interruption and spectrum handoff of co...In this study, we propose new dynamic spectrum allocations in multi-cells and intra-cell of cognitive network to enhance system performance in terms of decreasing probability of interruption and spectrum handoff of communication services in a cognitive system. The inter-cells of the spectrum allocation mechanism is designed to share the risk of vacating spectrum caused by licensed incumbents re-occupying the spectrum and minimize probability of service interruption in the cognitive network. This mechanism also can guarantee fairness among multi-cells. The intra-cell of the proposed spectrum allocation is based on a service data hierarchical model and establishes a mapping mechanism between layered data and the spectrum. It can reduce probability of spectrum handoff. Finally, simulation results are given and show that the new mechanism can reduce service interruption ratio and the probability of spectrum handoff caused by licensed incumbents with re-occupying the spectrum.展开更多
基金supported by the China Postdoctoral Science Foundation(No.2015M570936)National Science Foundation Project of P.R.China(No.61501026,61272506)Fundamental Research Funds for the Central Universities(No.FRF-TP-15032A1)
文摘In this paper, we propose a non-cooperative differential game theory based resource allocation approach for the network security risk assessment. For the risk assessment, the resource will be used for risk assess, including response cost and response negative cost. The whole assessment process is considered as a differential game for optimal resource control. The proposed scheme can be obtained through the Nash Equilibrium. It is proved that the game theory based algorithm is applicable and the optimal resource level can be achieved based on the proposed algorithm.
文摘<p> <span style="font-family:Verdana;">Under the Nigerian privatisation programme, the issues of risk allocation and mitigation were never always properly handled. Historically, there had always been a tendency to dump all the project risks on the private sector partner without properly evaluating whether it was capable of managing them. Extant literature has shown that where the comparative advantages of parties to handle risks are not properly taken into consideration, the allocation of risk is unbalanced and the tendency for the project to run into difficulties and/or fail increases. This paper looks at the electric power sector privatisation, distilling how key project risks were handled under the exercise. This should be a good pointer as to whether the privatisation exercise wo</span><span style="font-family:Verdana;">u</span><span style="font-family:Verdana;">ld be a success in the long run.</span><span></span> </p>
文摘Public-Private Partnership （PPP） financing modalily has the ability of alleviating the budgetary pressure to the government. fulfilling the need of infrastructure development, and improving the efficiency of investment and operation. However, the negotiations between the government and the investors are time-consuming and costly, due to the perspective differences in risk allocation and revenue distribution. Disputes often arise during concession period because of changes in various risks or non-performance of its obligalions, especially when one sector was forced to accept the requirements by the other as a result of the unequal status, the project urgency or other reasons. Only a few PPP projects in China could perform successfully. There is therefore a need to develop an equitable risk allocation mechanism for the delivery of PPP projects in China so as to improve the efficiency of private investment in infrastructure development.
基金financial support of Gnampa Research Project 2024 (Grant No.PRR-20231026-073916-203)funded in part by an Ermenegildo Zegna Founder's Scholarship (Zullino)。
文摘In the context of risk measures,the capital allocation problem is widely studied in the literature where different approaches have been developed,also in connection with cooperative game theory and systemic risk.Although static capital allocation rules have been extensively studied in the recent years,only few works deal with dynamic capital allocations and its relation with BSDEs.Moreover,all those works only examine the case of an underneath risk measure satisfying cash-additivity and,moreover,a large part of them focuses on the specific case of the gradient allocation where Gateaux differentiability is assumed.The main goal of this paper is,instead,to study general dynamic capital allocations associated to cash-subadditive risk measures,generalizing the approaches already existing in the literature and motivated by the presence of(ambiguity on)interest rates.Starting from an axiomatic approach,we then focus on the case where the underlying risk measures are induced by BSDEs whose drivers depend also on the yvariable.In this setting,we surprisingly find that the corresponding capital allocation rules solve special kinds of Backward Stochastic Volterra Integral Equations(BSVIEs).
基金supported in part by the National Key Research and Development Program of China(2017YFB0903000)in part by the National Natural Science Foundation of China(No.51677116).
文摘With the help of advanced information technology,real-time monitoring and control levels of cyber-physical distribution systems(CPDS)have been significantly improved.However due to the deep integration of cyber and physical systems,attackers could still threaten the stable operation of CPDS by launching cyber-attacks,such as denial-of-service(DoS)attacks.Thus,it is necessary to study the CPDS risk assessment and defense resource allocation methods under DoS attacks.This paper analyzes the impact of DoS attacks on the physical system based on the CPDS fault self-healing control.Then,considering attacker and defender strategies and attack damage,a CPDS risk assessment framework is established.Furthermore,risk assessment and defense resource allocation methods,based on the Stackelberg dynamic game model,are proposed under conditions in which the cyber and physical systems are launched simultaneously.Finally,a simulation based on an actual CPDS is performed,and the calculation results verify the effectiveness of the algorithm.
文摘Traditional profit allocation solutions cannot be effectively applied to the practice for the limitations in their premises and principles. This paper based on the practical processes of virtual supply chain performs analysis on major factors relative to cost and risk which effect the profit allocation among the partners, and then proposes the quantitative relations between the factors and profit allocation. The relations can serve as a base for further research on extensive profit allocation model.
文摘In this study, we propose new dynamic spectrum allocations in multi-cells and intra-cell of cognitive network to enhance system performance in terms of decreasing probability of interruption and spectrum handoff of communication services in a cognitive system. The inter-cells of the spectrum allocation mechanism is designed to share the risk of vacating spectrum caused by licensed incumbents re-occupying the spectrum and minimize probability of service interruption in the cognitive network. This mechanism also can guarantee fairness among multi-cells. The intra-cell of the proposed spectrum allocation is based on a service data hierarchical model and establishes a mapping mechanism between layered data and the spectrum. It can reduce probability of spectrum handoff. Finally, simulation results are given and show that the new mechanism can reduce service interruption ratio and the probability of spectrum handoff caused by licensed incumbents with re-occupying the spectrum.
