NandFlash控制器的规格设计

本文介绍了一个高速大容量NandFlash存储器控制器的设计规格的设计过程。描述了本设计规格的背景，应满足的设计要求，设计规格的特色和思考策略，提供了应用本设计规格进行设计的系统构成。     

软硬件协同容错电源控制系统的验证

本文对卫星星载软硬件协同电源控制系统容错设计进行了介绍，利用故障注入方法对创新一号小卫星电源控制系统的容错设计进行了验证，通过设计针对容错设计的测试方案，对容错设计进行了全面的测试，保证了容错设计的可靠性。     

MEMS工艺集成化设计及其可视化

针对目前MEMS设计复杂，直观性差等问题，提出了工艺集成化设计和可视化的可行性解决方案，对其中的关键技术进行了研究，并基于所提出的方案研究了工艺设计的集成化和可视化的实现技术。首先对MEMS表面加工工艺进行了详细的分析，采用面向过程的方法建立了表面工艺过程的统一模型。基于这一模型，研究了MEMS工艺设计的集成化技术，实现了工艺设计中各种信息的集成化，并设计开发了工艺设计的集成化软件环境。最后，对工艺设计中的二维版图的三维重构算法进行了详细的研究，通过Solil Works API接口的开发，在Solil Works的环境下实现了工艺过程的三维可视化。     

动态分光测色仪控制板设计

本文讨论了有关动态分光测色仪控制系统中的关键部件－控制板的设计问题，从复位，通讯，查询，存储及数据采集等功能块的设计入手，阐明了设计思想，实际调试结果证明了设计的合理性。     

EPLD器件在继电器抖动测试仪中的应用

通过继电器抖动测量设计实例，介绍了ＥＰＬＤ器件的特点，基本设计方法和设计过程，以及在设计中应用ＥＰＬＤ器件结设计带的好处。在简要介绍了继电器抖动测试仪的工作持性和ＥＰＬＤ器件的特点后，本文较详细地说明了采用原理输入方法设计ＥＰＬＤ器件的过程，并利用计算机仿真进行了设计验证。设计完成的继电器抖动测试仪在实际工作中稳定可靠，很好完成了设计要求。     

而向模块化的机械产品快速设计

市场的激烈竞争，使产品的开发设计周期在企业发展中的作用越来越重要，为缩短产品设计周期，快速设计技术受到广泛的重视。文中简述了快速设计和模块化的基本概念，介绍了快速设计的技术构成和模块化的优点，探讨了设计过程中的几个关键问题，并提出了基于功能模块的快速设计策略。结合范例设备的结构功能特点和设计过程，建立了基于功能模块的产品快速设计系统。     

模拟集成电路的特点及设计平台

讨论了常规和射频模拟集成电路(IC)设计和工艺的特点，介绍了模拟集成电路设计平台，着重论述了电子设计自动化的软件工具、硬件平台，以及设计与工艺接口的设计数据库。详细介绍了模拟IC及RFIC的设计流程和工艺设计包。     

一种新型的宽带全向高增益天线

通过对现有的同轴连续枝节天线设计方法的研究，提出了一种新的设计方法。用新方法设计出的同轴CTS天线，不仅保持了原有设计的优点，而且使得设计更加简单易行，同样采用4个CTS单元，新方法设计出来的天线比原有的设计提高了2．2dB的增益。     

AR技术在包装设计中的创新价值研究

AR技术在包装设计中的创新价值研究，是实现包装设计创新与AR技术应用价值的重要途径。分析AR技术的应用优势，可以为包装设计模式的创新提供帮助，增加包装设计的层次化，丰富包装设计的趣味性、动态交互等元素，有效提高包装设计质量。AR技术与数字化可听技术、人工智能交互技术等的有效融合，为包装设计创新提供了更多的发挥空间，提高了包装设计的品质。增强包装设计的沉浸感、体验感，为提高产品品牌关注度创造了有利条件，对AR技术的应用研究，实现了推动包装设计进步的目的。     

光缆传输系统的设计方法

介绍了光缆传输系统的三种设计方法，即最坏值（极限值）设计法、统计值设计法和准统计值设计法。重点介绍统计值设计法，并对前两种设计方法进行了比较，给出了统计值设计法的计算示例。     

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.     

Molecular dynamics study on compressive strength of monocrystalline, nanocrystalline and amorphous Si mold for nanoimprint lithography

Molecular dynamics studies are carried out to investigate the compressive strengths and the failure mechanisms of monocrystalline, nanocrystalline and amorphous Si molds for nanoimprint lithography. The stress-strain characteristics and the stress distributions are analyzed for the three types of Si molds. The stress-strain characteristics show that the strength of the monocrystalline Si mold is the greatest among the three types of Si molds. The strength of the nanocrystalline Si mold decreases as the grain size decreases. This shows the Hall-Petch effect does not hold true in the grain size of nanometer order. The visualization of the stress distribution shows that the monocrystalline, nanocrystalline and amorphous Si mold fail due to the slipping of the specific atomic plane, the sliding in the grain boundaries and the nonlocal plastic deformation, respectively. As a result, the monocrystalline Si mold is the most suitable for nanoimprint lithography among the three types of Si molds in the nanoscale regime.     

Win 2000中USB设备客户驱动程序的开发

介绍了USB(通用串行总线)总线的特点和USB接口的数据采集系统结构组成,分析了USB协议的层次关系、每个层次的功能、协议中使用的数据格式,从W indows操作系统入手分析了WDM驱动程序的结构、W indows系统的两种工作模式(用户模式和内核模式)及其通信,举例说明USB客户驱动程序的工作流程,并介绍了应用程序如何调用驱动程序以及实测的传输速度。     

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.     

简述UPS的集成化发展趋势

随着信息技术的发展,UPS(不间断电源)系统的应用越来越广泛,系统的发展趋势是提高可用性和可靠性,实现集成化。数字化的语言、文字、图像等信息产品迅速普及,网络传输中数字接口的接入网技术的成熟,将电信网、计算机网和广播电视网融合为一的“三合一”工程已进入实质性运作阶段。在这个变化中,电源保护也经历了由点到面的转变,以及从对硬件和数据的保护扩展到对整个网络可用性的保护。为了适应这种变化的需要,UPS系统变得越来越复杂。使用者在设计和构建UPS系统过程中,以及在长期使用维护中发现,UPS设备仅仅是整个系统的一个核心环节,供电系统设计的合理性以及系统中其他环节和设备的质量,不仅会直接影响系统的可用性和供电质量,同时还直接或间接地影响了UPS设备运行的可靠性。     

Preparation and Characterization of TaN ALD Precursors

High purity organic-tantalum precursors for thin film ALD TaN were synthesized and characterized.Vapor pressure and thermal stability of these precursors were studied.From the vapor pressure analysis,it was found that TBTEMT has a higher vapor pressure than any other published liquid TaN precursor,including TBTDET,TAITMATA,and IPTDET.Thermal stability of the alkyl groups on the precursors was investigated using a 1H NMR technique.The results indicated that the tertbutylimino group is the most stable group on TBTDET and TBTEMT as compared to the dialkylamido groups.Thermal stability of TaN precursors decreased in the following order:TBTDET ＞ PDMAT ＞ TBTEMT.In conclusion,precursor vapor pressure and thermal stability were tuned by making slight variations in the ligand sphere around the metal center.     

Design and FPGA Implementation of Self-Tuned Wave-Pipelined Filters with Distributed Arithmetic Algorithm

Wave-pipelining enables a digital circuit to be operated at a higher frequency. In the literature, only trial-and-error and manual procedures are adopted for the choice of the optimum value of clock frequency and clock skew between the input and output registers of wave-pipelined circuits. One of the major contributions of this paper is the proposal for automating the above procedure. A second contribution is the study of how logic depths determine the superiority of wave-pipelining over pipelining with regard to power dissipation. For the study and implementation of wave-pipelined circuits, filters using the distributed arithmetic algorithm are considered. In this paper, two automation schemes are proposed for the implementation of the wave-pipelined filters on both Xilinx and Altera field programmable gate arrays (FPGAs). In the first scheme, a self-tuning finite state machine (FSM) is used to choose the clock skew and clock period for I/O registers between the wave-pipelined blocks. In the second approach, an on-chip soft-core processor is used to choose the clock skew and clock period. To test the efficacy of the schemes proposed, filters with different taps are implemented using three schemes: synchronous pipelining, sub-optimal wave-pipelining and no pipelining (i.e. using neither synchronous pipelining nor wave-pipelining). From the implementation results, it is observed that wave-pipelined distributed arithmetic (DA) filters are faster by a factor of 1.31–1.61 compared to non-pipelined DA filters. The synchronous pipelined DA filters are in turn faster by a factor of 1.73–3.27 compared to the wave-pipelined DA filters. The increased speeds are achieved in the pipelined filters at the cost of an increase in the number of slices by 15–33% and in the number of registers by 350–530%. To compare the power dissipation, both pipelined and wave-pipelined DA filters are tested by operating them at the same frequency. For medium logic depths, the wave-pipelined DA filters dissipate less power than pipelined filters. This work is carried out with the funding received from the Department of Information Technology, Ministry of information and Telecommunication, New Delhi, India.     

一种新型的代理签名方案

可识别性是一般代理签名方案的一个特点,即验证者能够从代理签名中确定代理者的身份.在一些特殊的应用中,原始签名者希望在代理签名中隐藏代理签名者身份,验证者无法从代理签名中识别代理者身份,在出现争议时,验证者能通过原始签名者揭示代理者的身份,该文提出的方案能满足这种需求.     

基于ADAMS的铁路桥梁有砟道床力学特性研究

文中运用软件仿真分析了动力稳定装置在铁路桥梁上作业时有砟道床力学特性的问题.首先,在UG中建立稳定装置-轨道-桥梁系统各部件三维实体图并进行装配;然后,通过特定格式导入到ADAMS软件中,完善建立系统模型;最后,通过ADAMS对系统模型进行动力学仿真.文中还研究了稳定装置以不同激振频率作业,轨枕受力时的动态响应.在得到...     

Broadband-Facilitated Inter-WLAN Mobility Architecture

The existing WLAN architecture does not have the capabilities to leverage the wired and wireless broadband-accessed network control for the Inter-WLAN mobility. This paper presents a broadband-facilitated inter-WLAN mobility system architecture including its realization with the wired and wireless broadband-accessed network control for the WLAN mobility management. The proposed broadband-based inter-WLAN mobility management concept has changed the notion of the traditional WLAN mobility. Secondly, an implementation of the distribution system with broadband-accessed central network control for the IEEE 802.11 inter-WLAN mobility along with its management protocol is presented. In addition, this paper provides the modification to the enhanced IAPP protocol signaling messaging required for the broadband-facilitated WLAN mobility management. Finally, simulation experimental results for the proposed inter-WLAN communications architecture’s performance vs. WLAN mobility management performance employing standard and optimized MIP are presented. We believe that the proposed architecture would greatly enhance the Inter-WLAN IP mobility performance. This paper serves as a foundation work for future research in inter-WLAN mobility management using broadband, wired and wireless that integrates high-speed wide area network and WLANs.