基于三粒子纠缠态的量子安全直接通信协议

提出了一种新的三粒子量子安全直接通信协议。通信过程利用decoy光子来检测窃听,保证信道安全。发送方将秘密消息编码在不同幺正操作上,通信双方通过Bell基和Z基测量可直接传递秘密消息。由于所有粒子都用于传输秘密消息,且传输一次可获得两比特信息,该协议具有较高的量子比特及量子密码协议效率;三粒子纠缠态的制备是已实现技术,该协议具有实际操作的意义。此外,该协议在量子信道中也是安全的。     

量子雷达及其目标探测性能综述

量子技术与传统技术相结合以提升经典系统性能是近年来电子信息、计算机技术等众多科学领域研究热点。由于隐身和电子对抗技术的进步和日益成熟,雷达作为一类典型的电子信息系统,其目标探测受到了越来越多的挑战。从雷达目标探测角度出发,介绍了量子雷达的基本概念与分类、若干实现模型,重点剖析、归纳了量子纠缠等量子效应增强雷达目标探测性能的物理机理与研究现状,指出了量子雷达研究和实现中的关键技术与研究方向。     

数字签名技术改进方案研究

分析了采用秘密密钥和公开密钥的数字签名技术的不足,提出了相应的改进方案,从而可实现数字签名的各种功能,最后提出一种更为安全的多方数字签名方案。     

Inventory sharing under decentralized preventive transshipments

We consider preventive transshipments between two stores in a decentralized system with two demand subperiods. Replenishment orders are made before the first subperiod, and the stores may make transshipments to one another between the subperiods. We prove that the transshipment decision has a dominant strategy, called a control‐band conserving transfer policy, under which each store chooses a quantity to transship in or out that will keep its second‐subperiod starting inventory level within a range called a control band. We prove that the optimal replenishment policy is a threshold policy in which the threshold depends on the capacity level at the other store. Finally, we prove that there does not exist a transfer price that coordinates the decentralized supply chain. Our research also explains many of the differences between preventive and emergency transshipments, including differences in the optimal transfer policies and the existence or nonexistence of transfer prices that coordinate the system. © 2010 Wiley Periodicals, Inc. Naval Research Logistics, 2010     

一种防空导弹无线分布式信息共享系统

以PCI04嵌入式工控机为核心设计主控单元,以嵌入式单片机为核心设计从属单元,并应用GPS OEM接收板、AMAI)4550无线通信模块等,构建无线主从分布式信息共享系统.在该系统的支持下,大型防空导弹武器系统和若十便携式防空导弹间可以进行信息共享和交互,集成为一个以大型防空导弹武器系统为中心的防空作战体系,通过优势互补和邯同作战,能够实现作战效能的倍增.     

基于多Agent协作的战场信息共享系统研究与实现

针对联合作战中分布、动态的战场环境和海量的战场信息,满足不同作战实体对战场信息资源共享的需求,构建了一个基于多智能体的、面向作战任务的信息资源共享模型,并提出了一种新颖的基于相似度的用户动态聚类方法。从用户的资源请求中发现用户兴趣和用户之间的相似度,通过交互机制有效地将相同兴趣的用户及资源智能体关联起来,提高作战主体获取战场信息的能力。实验证明该算法具有较高的效率和良好的可扩展性。     

斯蒂芬-玻耳兹曼定律的微观证明研究

斯蒂芬-玻耳兹曼定律是热辐射理论中的一个重要规律,准确地理解该规律对掌握辐射传热和在实际消防灭火中灵活应用具有重要的意义。从经典热力学统计理论和微观量子波动理论两个不同的角度对该定律进行了详细地证明,得到了统一的结果,并对此加以讨论。     

基于改进量子遗传算法的有源噪声控制方法

提出了一种基于改进量子遗传算法的格型IIR滤波器结构的有源噪声控制方法——改进的量子遗传算法(IQGA)。其核心是在对量子门更新过程进行改进的基础上,引入群体灾变和自适应搜索网格的策略。IQGA不仅收敛速度快,还可以改变基本遗传算法(GA)的局部搜索能力,克服基本遗传算法存在的未成熟收敛问题。仿真结果表明,该算法可以有效地实现噪声控制。     

Lateral capacity exchange and its impact on capacity investment decisions

We study the problem of capacity exchange between two firms in anticipation of the mismatch between demand and capacity, and its impact on firm's capacity investment decisions. For given capacity investment levels of the two firms, we demonstrate how capacity price may be determined and how much capacity should be exchanged when either manufacturer acts as a Stackelberg leader in the capacity exchange game. By benchmarking against the centralized system, we show that a side payment may be used to coordinate the capacity exchange decisions. We then study the firms' capacity investment decisions using a biform game framework in which capacity investment decisions are made individually and exchange decisions are made as in a centralized system. We demonstrate the existence and uniqueness of the Nash equilibrium capacity investment levels and study the impact of firms' share of the capacity exchange surplus on their capacity investment levels.© 2007 Wiley Periodicals, Inc. Naval Research Logistics, 2007     

量子计算和量子计算机简述

介绍了量子计算和量子计算机的历史和发展，说明了量子计算机在什么地方超出经典计算机，介绍了量子计算机的原理和网络模型以及量子计算机实现中的困难。