Entanglement of Formation for Qubit-Qudit System Using Partition of Qudit System into a Set of Qubit System

Gerjuoy (Phys. Rev. A 67:052308, 2003) has derived a closed-form lower bound for the entanglement of formation of a mixed qubit-qudit system (qudit system has d levels with d≥3). In this paper, inspired by Gerjuoy’s method, we propose a scheme that partitions a qubit-qudit system into d(d?1)/2 qubit-qubit systems, which can be treated by all known methods pertinent to qubit-qubit system. The method is demonstrated by a qubit-qudit system (the levels of qudit are d=3 and d=5, respectively).     

Initial-Value Problem of a Coupled Dispersionless System: Dynamical System Approach

We investigate the dynamical behaviour of a coupled dispersionless system （CDS） by solving its initial-value problem following a dynamical system approach. As a result, we unearth a typical miscellaneous travelling waves including the localized and periodic ones. We also investigate the energy density of such waves and find that under some boundary conditions, the localized waves moving towards positive direction are more stable than the periodic waves which on contrary stand for the most conditions. stable travelling waves in another situation of boundary conditions.     

生物芯片检测系统中荧光信号强度及系统灵敏度分析

从生物芯片荧光信号检测系统结构出发,分析了荧光信号强度与激发光光学系统特性,荧光收集光学系统特性及构成系统的各元件的参量间的关系.建立了荧光信号强度与检测系统中各参量间的表达式,以及对系统灵敏度进行了分析.建立了系统最少可检测的荧光分子数与各参量的函数关系,并对所设计的悬浮生物芯片检测装置的系统灵敏度进行了估算,其灵敏度在曝光时间为1 s时可达7.9个荧光分子/μm2.     

基于嵌入式操作系统的无线电力监测系统设计

为了对各个用电设备或用电用户的电力使用情况进行精细化监测,从而对电力评估、管理起到基础性作用,设计了一种基于Contiki嵌入式操作系统的无线电力监测系统,以6LoWPAN作为无线通信协议;该系统由终端节点、路由节点、接入节点、GPRS模块及计算机数据中心构成;介绍了基于TV3154、TA5212及信号调理滤波网络、ADE7653电力测量、MSP430F1611主控及CC2420射频的终端节点、接入节点硬件设计方法;介绍了基于Contiki,结合6LoWPAN无线协议及I²C、UART等串口通信协议的终端节点、接入节点软件设计方法;实验结果表明,系统对电压、电流、功率的测量误差均保持在2% 以内,能够实现组网,两个节点之间的无线通信距离可达80 m。     

美国ABL计划的新进展

"ABL"系统是一个非常典型的高能激光应用系统,具有高度机动、高度精确及对目标进行闪电打击的特性,以及对多个目标进行毁灭性打击的能力.该系统能适应各种复杂环境,并能以最小的和可恢复的毁伤实现政治、军事上的双赢.因此, "ABL"系统也是美国投入大量人力、物力优先发展的弹道导弹防御武器系统.介绍"ABL"系统的历史、组成及研制分工,详述其近期的技术进展和战场优异性能.     

System of HPC content archiving

This work is aimed to develop a system, that will effectively solve the problem of storing and analyzing files containing text data, by using modern software development tools, techniques and approaches. The main challenge of storing a large number of text documents defined at the problem formulation stage, have to be resolved with such functionality as full text search and document clustering depends on their contents. Main system features could be described with notions of distributed multilevel architecture, flexibility and interchangeability of components, achieved through the standard functionality incapsulation in independent executable modules.     

Axioms of an Experimental System

In this paper a system of axioms is presented todefine the notion of an experimental system. The primaryfeature of these axioms is that they are based solely onthe mathematical notion of a direct product decomposition of a set. Properties ofexperimental systems are then developed. This includesdefining negation, implication, conjunction, anddisjunction on the set of all binaryexperiments of the system and showing that the resulting structure is aregular orthomodular poset. The theory of observables ofexperimental systems is also developed. Finally, theusual models of experiments from classical as well as quantum physics are shown to satisfythe axioms of an experimental system, and a mechanism tocreate new models of the axioms is given.     

直升机传动系统试车台测控系统设计

直升机传动系统的研制,需要大量试车台对其设计合理性进行试验验证。在满足传动系统试车台技术指标的基础上,采用分布式结构和C/S模式测控网络,设计了一种具有通用性的测控系统。详细阐述了测控系统工作原理和软硬件设计。该系统减少了试车台建设和适应性改造的周期和难度,增强试车台的灵活性和可维护性。系统已成功应用于多个传动系统试车台,且运行稳定可靠。     

DWDM System Components

The hottest word in telecommunications technology is dense wavelength division multiplexing (DWDM). In this paper, a review of the DWDM component market is presented together with a worldwide forecast over the next 5 years. The most dramatic changes in telecommunications have taken place in the last several years with the advent of DWDM to exploit the potential of unlimited bandwidth on a fiber pair. Originally installed to solve the problem of fiber exhaust in long-distance networks, DWDM is becoming the leading driver to an all-topical network. DWDM is insensitive to bit rate and format and permits a telecommunications network to increase capacity without installing new fiber, and at a decreased cost with much greater flexibility. DWDM places narrowly spaced channels onto the same fiber and increases capacity on existing fiber routes by factors of 16, 32, 40, or more. DWDM has also made it possible for new carriers to enter the market using IP-based rather than circuit-switched networks at considerably lower costs.     

MC-ROV导航系统研究

针对研制的新型模态切换水下机器人(Mode-Converted ROV, MC-ROV),设计了一套以MEMS器件为主的微惯性组合导航系统,包括陀螺仪、加速度计、磁力计、深度传感器及微处理器等。系统采用互补滤波方法抑制陀螺漂移,设计卡尔曼滤波器计算姿态角。本文采用了改进的自适用卡尔曼滤波器,增大新近数据的作用,减小陈旧数据的作用,避免滤波发散,提高导航精度。水池实验表明结合互补滤波、自适应卡尔曼滤波能够获得比较精确、稳定的水下机器人导航信息。同时,基于实测数据进行的算法仿真表明改进后的渐消记忆指数加权自适应卡尔曼滤波可以在一定程度上改善导航效果。     

HIRFL-CSR主环加速腔系统设计

正在建设中的兰州重离子加速器冷却储存环 ( HIRFL- CSR)的主环加速腔系统用于将累积的重离子束流进行加速 .其频率范围为 0 .2 5 - 1 .7MHz,峰值电压为 8.0 k V.重点介绍了主环加速腔系统的设计及主要高频参数 ,包括高频腔体的设计及低电平控制部分的设计. An ion cooler storage ring HIRFL CSR is constructing at Institute of Modern Physics(IMP). It consists of two rings--main ring (CSRm) and experimental ring (CSRe). For the CSRm, two RF systems will be employed. One is for RF stacking, and another is for beam accelerating. The designed parameters of CSRm accelerating system and the control block diagram of RF system are described. The RF accelerating system has a specification of lower and wider frequency range from 0.25 to 1.7 MHz...     

关于K-p两体问题的相对论修正

从基本理论出发，导出并求解了含有相对论修正的K^-介子与质子的两体薛定谔方程。其解可看作有统计解释的波函数。计算了K^p的散射长度，结果表明相对论效应是很明显的。A two-body equation of the kaon-proton system with relativistic correction is derived and solved. The solution can be considered as a wave function with the probability interpretation. The scattering lengths are calculated, and the numerical result shows that the relativistic effect is apparent.     

航空电子设备自动测试系统的软件架构设计

为检测和定位航空电子设备的故障,研究并设计了一种自动测试系统的软件架构;该架构包含了测试软件和测试数据库,测试数据库存储有测试被测设备的相关数据,测试软件将其作为输入,通过自动测试设备输送给被测设备,最终测试软件接收被测设备的输出并将其与测试数据库的预期数据相比较得出测试的结果;测试软件由手动测试模块、自动测试模块、系统自检测模块、测试记录读取和测试结果记录模块4个功能模块组成,自动测试和手动测试可以自由切换;该系统不仅能使用自动测试功能仿真被测设备的飞行环境,还可以使用手动测试功能具体定位分析故障,降低了设备的维护成本,缩短了维修时间。     

消热差光学系统设计

引入光学材料的规化热差系数T和规化色差系数C,和到对无热差光系统设计的材料选择具有指导作用的T-C图.提出基于热差互补原理的无热差光学系统设计方法,建立了一组既消热差又消色差的方程组.给出了应用这种设计方法设计的密接三片和三分离两种结构型式的无热差系统在不同温度时的像面位移、垂轴像差和各色传递函数曲线.     

Tuning Exchange Anisotropy of Exchange-Biased System

Exchange anisotropy in FM/AFM bilayers has given a lot of static magnetization properties such as enhanced coercivity and magnetization loop shifts. These phenomena are primarily from the effective anisotropies introduced into a ferromagnet by exchange coupling with a strongly anisotropic antiferromagnet. These effective anisotropies can also be used to explain the dynamic consequences of exchange-biased bilayers. In this article, the dynamic consequences such as exchange-induced susceptibility, exchange-induced permeability, and the corresponding domain wall characteristics in the exchange-biased structures of ferromagnet/antiferromagnet1/antiferromagnet2 are studied. The results show that the second antiferromagnetic layer can largely affect the dynamic consequences of exchange-biased bilayers. Especially in the case of critical temperature, the effects become more obvious. Practically, the exchange anisotropy of biased bilayer system can be tuned by exchange coupling with the second antiferromagnetic layer.     

Computerized System of Multiphoton Ionization Spectroscopy

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Impulsive Synchronization of Laser Plasma System

The issue of impulsive synchronization of the coupled chaotic laser plasma system is investigated. A new framework for impulsive synchronization of such chaotic systems is presented, which makes the synchronization error system a linear impulsive control system. We derive some sufficient conditions for the synchronization of a laser plasma system via impulsive control with the varying impulsive intervals, which allows us to derive the impulsive synchronization law easily. To illustrate the effectiveness of the proposed results, two numerical examples are given.     

CIELUV色差计算公式的实验修正

通过在彩色显示器上所做的主观色差评价实验获得了对ＣＩＥＬＵＶ颜色空间差公式的线性校正，利用校正后的色差公式计算的结果与视觉的主观色差评价十分吻合。