大型仿真模型体系的可重用性实现方法研究

实现大型仿真模型体系的可重用性是提升仿真系统开发效率的重要途径。本文分析了目前可重用方法的主要思路与瓶颈；为了满足模型体系的层次性，设计了 ASM(Agent 仿真模型)简单模型与组合模型的基本结构；研究了 ASM 的动态组合方法，分析了不同组合形式下模型元素映射关系，以及针对专业领域约束的扩展匹配规则。对某空间攻防对抗仿真的应用实例验证了该方法的可行性和实用性。     

面向云服务的仿真模型可重用技术研究

基于网络信息体系的联合作战体系论证及分析评估仿真中对大量异构模型资源联合仿真需求越发强烈,而异构仿真模型重用困难、模型重用使用灵活性差、基于面向服务的架构(Service-Oriented Architecture,SOA)技术实现模型重用的仿真系统运行实时性差等问题突出.针对上述问题,文中提出了面向云服务的仿真模型可...     

综合电子信息系统仿真环境研究

为满足综合电子信息系统复杂的仿真需求,提出建立综合电子信息系统仿真试验平台,通过分析综合电子信息系统对一体化仿真环境的需求,提出了一种开放式、可扩展的仿真环境;介绍了仿真系统的体系结构和功能组成;采用可重用仿真模型的开发过程,对系统仿真模型进行分类和重用组合,并给出了综合电子信息系统仿真环境中的仿真实例;综合电子信息系统仿真环境可扩展性好、通用性强,方便系统仿真环境的更新和扩展移植,可用于验证综合电子信息系统的作战性能、论证系统的作战需求。     

基于FLAMES的电子战仿真模型的组合建模

随着军用仿真技术的不断发展,使得多领域的模型集成变得更加困难,模型组合和可重用性不足问题显得十分突出。阐述了组合建模和柔性行为分析与建模评估系统（FLAMES）建模原理,针对FLAMES柔性仿真框架下建模灵活性的特点,并结合关联假设的组合建模理论,提出了基于FLAMES的电子战仿真模型的组合仿真概念框架和建模方法,以某型电子战飞机为例,通过仿真实验分析仿真数据。结果表明,该方法能够有效对模型进行组合建模,能为基于FLAMES柔性仿真框架的模型组件开发及其组合建模提供一定的依据。     

基于HLA的模型级仿真成员组合技术研究

基于高层体系结构(HLA)的仿真中通常以COM服务组件的形式对HLA接口进行封装,实现仿真模型的复用。随着仿真规模的进一步扩大,会产生联邦成员过多的问题,从而提高仿真成本。提出模型级别成员组合的概念,在基于COM的联邦仿真成员重用技术基础上,探讨采用有向图描述数据订购关系的相关理论问题,设计通用仿真成员依据有向图调度多个仿真模型,在不破坏成员之间数据传递关系的前提下,将多个仿真模型组合为一个联邦仿真成员,从而减少了仿真联邦成员的数量,降低了仿真的成本。     

基于模型的雷达对抗仿真系统构建技术

随着仿真需求层次的不断提高,雷达对抗仿真系统涉及到的仿真模型越来越多。仿真模型库为模型重用提供了有效的管理平台,支撑了基于模型重用的仿真系统构建。结合导弹突防背景下的雷达对抗仿真系统,分析了仿真系统的总体方案,设计了仿真系统的模型结构,提出了基于模型的仿真系统构建方法。     

可重用设计方法研究

可重用IP技术与软硬件协同设计、深亚微米设计技术是SoC设计的关键技术支撑。本文首先把片上系统的设计方法和传统的基于线负载模型的ASIC设计方法进行比较。然后较详细地探讨了可重用IP模块的定义、可重用IP模块的设计过程、可重用IP模块的选择等。     

基于SysML的飞控系统模型重用技术

针对飞控系统建模中的模型重用问题,改进面向虚拟样机的系统分析和描述方法,提出一种基于系统工程建模语言(SysML)组件(BSC)的飞行控制系统虚拟样机模型重用方法,即"部件、结构;行为、过程"(US-BP)方法;以某型四旋翼无人机为例,说明了飞控系统虚拟样机支持模型重用的实现方式,即基于SysML组件与Simulink组件的仿真设计与实现方法。本文为飞控系统建模与仿真领域中的模型重用提供了重要的技术途径。     

基于可重用构件的软件开发模式研究

传统软件开发方法因难以支持需求的早期验证而易导致项目失控。文章将软件重用思想与面向对象技术相结合,提出将面向对象的软件重用开发方法作为领域工程中软件系统的设计思想和方法。在此基础上对传统的软件开发模型作了对比分析,提出了面向对象的软件重用瀑布模型,进而针对在基于开发模型开发应用系统过程中的一些问题作了探讨。这种开发模式可以有效地缩短软件的开发周期,减少开发人员的工作量。     

可重用片上仿真调试协议结构

提出了一种可重用片上仿真调试协议结构,基于此结构设计实现的片上仿真调试逻辑,简单高效,便于重用于新的芯片和新的体系结构.     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks     

Call for Papers—Feature Topic,Vol.12,No.7,2015

正Information Centric Networking Information-Centric Networking(ICN) is an emerging direction in Future Internet architecture research,gaining significant tractions among academia and industry.Aiming to replace the conventional host-to-host communication model by a data-centric model,ICN treats data content as the first