This paper introduces the theory of system engineering on materiel into the management and monitoring of reliability, maintainability and supportability (RMS) activities in the aeronautic equipment's life cycle. I...This paper introduces the theory of system engineering on materiel into the management and monitoring of reliability, maintainability and supportability (RMS) activities in the aeronautic equipment's life cycle. In order to assure the science of RMS management, it analyzes the contents of RMS activities in a life cycle, provides the model of management and monitoring, and discusses the software realization of the management and monitoring system.展开更多
To improve the performance of the supply chain with one supplier and multiple retailers under deterministic price-sensitive customer demand, an optimal strategy is proposed based on knowledge discovery. First the dece...To improve the performance of the supply chain with one supplier and multiple retailers under deterministic price-sensitive customer demand, an optimal strategy is proposed based on knowledge discovery. First the decentralized system in which the supplier and the retailers are independent, profit-maximizing participants with the supplier acting as a Stackelberg game leader is studied. Numerical examples illustrate the importance of the coordination. The conventional quantity discount mechanism needs to be modified to coordinate the supply chain, so a revenue-sharing contract is proposed to coordinate such supply chain. Lastly, a special decision under certain demand rates is studied. The pricing and replenishment policies can be decided sequentially, which yields much less loss comparing with optimal decision when the demand rates are sufficiently large.展开更多
Considering the existence of multi-level fares in the alliance,and the existence of horizontal competition and vertical competition at the same time,this paper intends to maximize the revenue of airline alliance and f...Considering the existence of multi-level fares in the alliance,and the existence of horizontal competition and vertical competition at the same time,this paper intends to maximize the revenue of airline alliance and fairly distribute the revenue to member airlines.Firstly,a model is built under the centralized mechanism,in which all airlines in the alliance are regarded as a whole.By solving the model,the shadow price of each flight leg on the code-sharing route is gotten.It is used to calculate the proportion of the revenue distribution.Then,the centralized model is decomposed into the single airline model by the proportion.The seat allocation among airlines and distributed revenue can be gotten by solving the model.Three typical examples are designed to test it.The results show that,the model can effectively reflect the managerial principal of the airline alliance,that is maximizing total revenue and fairly distributing the revenue among member airlines.展开更多
基于区块链技术,提出具有身份认证和任务监管的声誉管理系统(Reputation Management System with Identity Authentication and Task Supervisor,RMS-IATS),解决群机器人内拜占庭机器人的识别问题,避免拜占庭机器人对群机器人造成安全威...基于区块链技术,提出具有身份认证和任务监管的声誉管理系统(Reputation Management System with Identity Authentication and Task Supervisor,RMS-IATS),解决群机器人内拜占庭机器人的识别问题,避免拜占庭机器人对群机器人造成安全威胁.首先,改进经典的基于区块链的群机器人声誉管理系统(Reputation Management System,RMS),引入惩罚因子,针对长期存在拜占庭行为的机器人实施更严厉的声誉值惩罚.其次,为了加快拜占庭机器人的识别速度,设计一种身份认证协议,将身份非法的机器人赋予一个较低的初始声誉值.再者,设计一种双层通信网络,用于机器人间的通信,解决群机器人系统因采用区块链技术带来的通信延迟问题.最后,通过仿真实验验证基于区块链的RMS-IATS和双层通信网络的有效性.相比经典的群机器人RMS,RMS-IATS在仿真模拟中识别不同类型拜占庭机器人所需的时间更短.相比使用区块链技术,在系统中使用双层通信网络进行通信时,可大幅减少系统的最大通信延迟.展开更多
文摘This paper introduces the theory of system engineering on materiel into the management and monitoring of reliability, maintainability and supportability (RMS) activities in the aeronautic equipment's life cycle. In order to assure the science of RMS management, it analyzes the contents of RMS activities in a life cycle, provides the model of management and monitoring, and discusses the software realization of the management and monitoring system.
基金the National Natural Science Foundation of China (70471034)the Talent Foundation of Nanjing University of Aeronautics and Astronautics (s0670-082).
文摘To improve the performance of the supply chain with one supplier and multiple retailers under deterministic price-sensitive customer demand, an optimal strategy is proposed based on knowledge discovery. First the decentralized system in which the supplier and the retailers are independent, profit-maximizing participants with the supplier acting as a Stackelberg game leader is studied. Numerical examples illustrate the importance of the coordination. The conventional quantity discount mechanism needs to be modified to coordinate the supply chain, so a revenue-sharing contract is proposed to coordinate such supply chain. Lastly, a special decision under certain demand rates is studied. The pricing and replenishment policies can be decided sequentially, which yields much less loss comparing with optimal decision when the demand rates are sufficiently large.
基金partially supported by the Natural Science Foundation of Jiangsu Province(No.BK 20151479)the Central University Basic Research Fees(No.NZ2016109)
文摘Considering the existence of multi-level fares in the alliance,and the existence of horizontal competition and vertical competition at the same time,this paper intends to maximize the revenue of airline alliance and fairly distribute the revenue to member airlines.Firstly,a model is built under the centralized mechanism,in which all airlines in the alliance are regarded as a whole.By solving the model,the shadow price of each flight leg on the code-sharing route is gotten.It is used to calculate the proportion of the revenue distribution.Then,the centralized model is decomposed into the single airline model by the proportion.The seat allocation among airlines and distributed revenue can be gotten by solving the model.Three typical examples are designed to test it.The results show that,the model can effectively reflect the managerial principal of the airline alliance,that is maximizing total revenue and fairly distributing the revenue among member airlines.
文摘基于区块链技术,提出具有身份认证和任务监管的声誉管理系统(Reputation Management System with Identity Authentication and Task Supervisor,RMS-IATS),解决群机器人内拜占庭机器人的识别问题,避免拜占庭机器人对群机器人造成安全威胁.首先,改进经典的基于区块链的群机器人声誉管理系统(Reputation Management System,RMS),引入惩罚因子,针对长期存在拜占庭行为的机器人实施更严厉的声誉值惩罚.其次,为了加快拜占庭机器人的识别速度,设计一种身份认证协议,将身份非法的机器人赋予一个较低的初始声誉值.再者,设计一种双层通信网络,用于机器人间的通信,解决群机器人系统因采用区块链技术带来的通信延迟问题.最后,通过仿真实验验证基于区块链的RMS-IATS和双层通信网络的有效性.相比经典的群机器人RMS,RMS-IATS在仿真模拟中识别不同类型拜占庭机器人所需的时间更短.相比使用区块链技术,在系统中使用双层通信网络进行通信时,可大幅减少系统的最大通信延迟.
