OPTIMIZED REVERSIBLE ARITHMETIC LOGIC UNITS

Arithmetic Logic Unit(ALU) as one of the main parts of any computing hardware plays an important role in digital computers. In quantum computers which can be realized by reversible logics and circuits, reversible ALUs should be designed. In this paper, we proposed three different designs for reversible 1-bit ALUs using our proposed 3×3 and 4×4 reversible gates called MEB3 and MEB4(Moallem Ehsanpour Bolhasani) gates, respectively. The first proposed reversible ALU consists of six logical operations. The second proposed ALU consists of eight operations, two arithmetic, and six logical operations. And finally, the third proposed ALU consists of sixteen operations, four arithmetic operations, and twelve logical operations. Our proposed ALUs can be used to construct efficient quantum computers in nanotechnology, because the proposed designs are better than the existing designs in terms of quantum cost, constant input, reversible gates used, hardware complexity, and functions generated.

Canonical logic units using bidirectional four-wave mixing in highly nonlinear fiber

All-optical canonical logic units at 40 Gb/s using bidirectional four-wave mixing(FWM) in highly nonlinear fiber are proposed and experimentally demonstrated. Clear temporal waveforms and correct pattern streams are successfully observed in the experiment. This scheme can reduce the amount of nonlinear devices and enlarge the computing capacity compared with general ones. The numerical simulations are made to analyze the relationship between the FWM efficiency and the position of two interactional signals.

Logic Picture-Based Dynamic Power Estimation for Unit Gate-Delay Model CMOS Circuits

In this research, a fast methodology to calculate the exact value of the average dynamic power consumption for CMOS combinational logic circuits is developed. The delay model used is the unit-delay model where all gates have the same propagation delay. The main advantages of this method over other techniques are its accuracy, as it is deterministic and it requires less computational effort compared to exhaustive simulation approaches. The methodology uses the Logic Pictures concept for obtaining the nodes’ toggle rates. The proposed method is applied to well-known circuits and the results are compared to exhaustive simulation and Monte Carlosimulation methods.

基于三取二冗余容错架构的数字逻辑单元设计

针对新一代轨道车辆控制系统的高可靠、高安全、高冗余、高集成等要求,为了使车载计算机在复杂运行环境下快速、准确、高效地完成网络传输、数据计算和输出控制,设计了基于三取二冗余容错架构的数字逻辑单元(DLU),并在软件的配合下实现了对车辆关键控制电路的安全服役功能。该控制单元采用三取二冗余控制策略。程序采用抢占式多任务实时操作的控制逻辑。系统采用电源模块、信号采集模块、信号输出模块和处理器模块并行启动和运算电路。输出采用具有自反馈校正的同步校验信号机制。通过可用性和安全性这两个方面的综合对比分析,验证了三取二架构DLU在正常运行下基本功能的实现和在失效模式下对系统运行保护的冗余切换功能。在发生单个或多个故障时,三取二架构不仅确保了系统控制的完整性和可靠性,而且最大限度保障了系统资源的可用性。该设计为DLU在车辆的实际应用中提供了利用率高和满足高安全等级的可行设计方案。

地铁车辆LCU热设计及仿真研究

逻辑控制单元(LCU)作为一种电子设备,其工作可靠性和使用寿命主要受到温度的影响。为了提高LCU的可靠性,延长LCU的使用寿命,结合热设计理论和北京地铁某项目LCU系统方案,对LCU热设计进行优化,并通过热仿真进行验证。

美国学科专业目录的演进逻辑、建构机理与本土借鉴

自1980年以来,美国先后5次修订学科专业分类目录,已逐步形成独具特色、科学完备的成熟制度体系。美国学科专业分类目录的革新是内外部多要素、多方力量交互耦合的动态过程,其演进逻辑是以政府主持为主导的规制性驱动系统、以多主体协作为支持的规范性驱动系统、以经济转型升级为引领的社会认知性驱动系统协同作用,赋能其学科群、专业类与专业、新兴交叉学科等核心要素结构进行调整,再自下而上反馈于构建行为主体修订、发布,此过程循环往复、螺旋式提升。其建构机理即科学严谨与民主开放的建构理念;“三要求”与“四标准”的修订条件;“收集数据+统计分析”“调研论证+拟定草案”与“集体审议+公众反馈”三阶段的科学评议程序。未来应通过赋能制度创新与理顺运行机制、建立各学历层次目录协同管理与修订机制、持续推进学科专业结构布局优化、推动新兴交叉学科发展等途径加强我国学科专业目录建设。

基于PLC的船舶主机供油单元控制系统设计

以船舶主机供油单元控制系统为研究对象,设计一种基于可编程逻辑控制器(Programmable Logic Controller,PLC)的船舶主机供油单元控制系统。分别对控制系统的功能、硬件和软件进行设计,实现对船舶主机供油单元的自动化控制与监测,提高船舶主机供油单元的效率与稳定性。

高速动车组轴温实时监测诊断逻辑研究与应用分析

常规的轴温预报警诊断逻辑主要基于给定温度绝对值阈值及其上升斜率阈值,当被测温度值出现波动时,通常难以进行有效分析和判断。高速动车组轴温监测系统因硬件线路接触不良或电磁干扰等外部因素会导致被测温度异常跳变或缺失,进而引发误报预报警的问题,对此,文章提出了一种异常温度曲线剔除逻辑方案。该方案基于大量现场被测轴温数据分析结果,提取可以准确描述轴温曲线变化的特征量,用于描述其波动情况和上升趋势,以此判断是否存在异常温度变化。仿真结果表明了该方案在识别温度异常跳变方面的有效性和可行性。同时,文中所提方案已完成线路上长期运行考核,现场故障误报率由78.3%降低到26.5%,达到了大幅降低现场误报率的目的。

Logical and Timing Control for Diagnostic Neutral Beam Injection on HT-7

The timing and master control logic （MCL） units are the most important function units of the diagnostic neutral beam （DNB） power supply control system. The units control the operation of nine power supply subsystems of the DNB system, and provide protection for the DNB system from faults such as beam source arc down. Based on the characteristics of the DNB power supply system, the timing and MCL units have been designed, fabricated and tested. Experiments prove that the timing unit is convenient, flexible and reliable, and the MCL is functional.

α-Input and α-Unit Resolution Methods for Generalized Horn Clause Set in L_(V(n×2))F(X)

α-Input resolution and α-unit resolution for generalized Horn clause set are discussed in linguistic truth-valued lattice-valued first-order logic (LV(n×2)F(X)), which can represent and handle uncertain linguistic values-based information. Firstly the concepts of α-input resolution and α-unit resolution are presented, and the equivalence of them is shown. Then α-input (α-unit) resolution is equivalently transformed from LV(n×2)F(X) into that of LnP(X), and their soundness and completeness are also established. Finally an algorithm for α-unit resolution is contrived in LnP(X).

SD16的三值逻辑光学运算器理论和结构

为推进三值光学计算机产业化应用,同时提高现有运算器的效率和稳定性,本文论述了三值逻辑光学运算器(Ternary Optical Logic Unit,TOLU)的相关理论、工作原理和实际结构.依据降值设计理论,设计了基元特征结构,优化后形成了简洁的TOLU的光路和电路结构,并以制作成功的TOLU为核心,建成三值光学计算机原型系统SD16.在此基础上,提出了运算器实现18种三值逻辑运算基元的重构方法及重构码生成的创新思想,分析了复合运算基元的重构码,建立了复合运算基元与行运算器的关联,解决了任意三值逻辑运算器重构码生成的关键技术难题.实验表明,SD16的三值逻辑光学运算器的构造理论和结构切实可行,运算结果准确,运行稳定可靠,同时验证了三值光学运算器位数众多、按位可分配、按位可重构的优势.

基于地理信息系统与斜坡单元的峨边县地质灾害易发性评价

斜坡单元依据山脊线和山谷线划分的单元,能够体现研究区的真实地质环境条件,作为评价单元在地质灾害易发性评价中具有重要意义。采用地理信息系统(geographic information system,GIS),运用水文分析工具提取峨边县斜坡单元,选取归一化植被指数、坡度、高程、地形起伏度、地层岩性、距水系的距离、距断层距离、距道路的距离8个因子,使用逻辑回归模型(logistic regression,LR),制得地质灾害易发性概率图,将其划分为非易发区、低易发区、中易发区、高易发区和极高易发区。结果表明:ROC(receiver operating characteristic curve)曲线的线下面积(area under curve,AUC)精度检验值为0.917,极高易发区和高易发区内地质灾害点数占总灾害点数的81.3%,说明对峨边县进行基于斜坡单元使用逻辑回归进行地质灾害的易发性评价具有可行性和较高精度。

新时代党的宗教工作的三重逻辑

统战、安全与治理是新时代党的宗教工作的三重逻辑。着眼于统战逻辑,“群众工作”的本质决定了新时代党的宗教工作应为统一战线“画出最大同心圆”贡献自己的力量;着眼于安全逻辑,国家安全这件“头等大事”决定了新时代党的宗教工作应为践行总体国家安全观贡献自己的力量;着眼于治理逻辑,全面深化改革的总目标决定了新时代党的宗教工作应努力提升治理能力。从一定意义上讲,统战、安全与治理这三重逻辑三位一体,共同推进新时代党的宗教工作健康发展。马克思主义无神论这个大原则对于我们深化认识新时代党的宗教工作中的统战、安全与治理的逻辑,同样具有重要意义。

Investigation of the ^(121)Sb(α,γ)^(125)I reaction cross-section calculations at astrophysical energies

Proton-rich nuclei are synthesized via photodisintegration and reverse reactions.To examine this mechanism and reproduce the observed p-nucleus abundances,it is crucial to know the reaction rates and thereby the reaction cross sections of many isotopes.Given that the number of experiments on the reactions in astrophysical energy regions is very rare,the reaction cross sections are determined by theoretical methods whose accuracy should be tested.In this study,given that ^(121)Sb is a stable seed isotope located in the region of medium-mass p-nuclei,we investigated the cross sections and reaction rates of the ^(121)Sb(α,γ)^(125)I reaction using the TALYS computer code with 432 different combinations of input parameters(OMP,LDM,and SFM).The optimal model combinations were determined using the threshold logic unit method.The theoretical reaction cross-sectional results were compared with the experimental results reported in the literature.The reaction rates were determined using the two input parameter sets most compatible with the measurements,and they were compared with the reaction rate databases:STARLIB and REACLIB.

Fin Field Effect Transistor with Active 4-Bit Arithmetic Operations in 22 nm Technology

A design of a high-speed multi-core processor with compact size is a trending approach in the Integrated Circuits(ICs)fabrication industries.Because whenever device size comes down into narrow,designers facing many power den-sity issues should be reduced by scaling threshold voltage and supply voltage.Initially,Complementary Metal Oxide Semiconductor(CMOS)technology sup-ports power saving up to 32 nm gate length,but further scaling causes short severe channel effects such as threshold voltage swing,mobility degradation,and more leakage power(less than 32)at gate length.Hence,it directly affects the arithmetic logic unit(ALU),which suffers a significant power density of the scaled multi-core architecture.Therefore,it losses reliability features to get overheating and increased temperature.This paper presents a novel power mini-mization technique for active 4-bit ALU operations using Fin Field Effect Tran-sistor(FinFET)at 22 nm technology.Based on this,a diode is directly connected to the load transistor,and it is active only at the saturation region as a function.Thereby,the access transistor can cutoff of the leakage current,and sleep transis-tors control theflow of leakage current corresponding to each instant ALU opera-tion.The combination of transistors(access and sleep)reduces the leakage current from micro to nano-ampere.Further,the power minimization is achieved by con-necting the number of transistors(6T and 10T)of the FinFET structure to ALU with 22 nm technology.For simulation concerns,a Tanner(T-Spice)with 22 nm technology implements the proposed design,which reduces threshold vol-tage swing,supply power,leakage current,gate length delay,etc.As a result,it is quite suitable for the ALU architecture of a high-speed multi-core processor.

基于多媒体传感网络的实验教学环境监测方法

为了有效提高实验教学监控方法的适应性,研究了基于多媒体传感网络的实验教学环境监测方法。通过传感网络提取当前教学环境可测监控信息流作为前导性数据,以节点和门为单位构建检测关系分析模型,导出监控关系分析矩阵,最后引入信息流和超差环境数据,获取最终实验教学环境监控结果。实验结果表明,常规环境下该监控方法的反应速率提高了32%,复杂环境下其反应速率提高了28%,整体适应性更强。

基于斜坡单元划分和逻辑回归模型的滑坡易发性评价——以山阳县高坝店镇为例

斜坡单元作为基本评价单元,常被用于地质灾害易发性评价中,在地质灾害易发性评价中具有极其重要的作用。使用GIS平台中的水文分析工具提取高坝店镇斜坡单元,选取坡度、地势起伏度、海拔高度、灾害点密度、距断层距离、距水系距离、距道路距离、NDVI指数8个评价因子,进行多重共线性计算,据逻辑回归模型求得各因子逻辑回归系数及常量,制出高坝店镇滑坡易发性概率图。采用自然间断法将其划分为极高、高、中、低、非易发区,面积分别为19.41 km^(2)、27.20 km^(2)、46.42 km^(2)、60.52 km^(2)、94.99 km^(2);占研究区总面积的7.81%、10.94%、18.68%、24.35%、38.22%;各区灾害比率随易发性等级升高而增加。采用受试者工作特征(ROC)曲线方法检验评价模型结果的可靠性,得到AUC为0.8117。说明对高坝店镇进行基于斜坡单元划分和逻辑回归模型的滑坡地质灾害易发性评价具较好的适用性。

中国式脱贫攻坚实践:驻村帮扶工作队治贫的单位逻辑与行动策略研究——以湖南省P镇为例

驻村帮扶作为一种长期持续的扶贫机制,已成为中国农民脱贫和农村社会治理的重要制度安排,亦是国家与基层社会建立连接的重要手段。驻村帮扶工作队参与农村脱贫与社会发展振兴的具体实践模式得以制度化运行。不同配置样态下的单位协同村庄发展的实践呈现出“和合共生”和“仪式展演”的具体行动策略,单位化的科层运行逻辑和项目化的耦合治理逻辑再现了单位派驻的工作队在脱贫攻坚过程中的运行机制。由工作队的驻村实践所形塑的中国式脱贫攻坚实践是一种具有乡土特色的村庄治理模式,不同单位的派出逻辑影响着工作队在贫困治理场域中的具体实践,是中国式脱贫攻坚实践发挥效用的前提,而由不同单位派出的驻村工作队形塑的不同村庄治理形态是中国式脱贫攻坚实践的核心内容。

改进的风电机组转矩控制策略

风电机组的变桨控制和转矩控制均基于转速信号设计,二者在额定转速附近发生耦合,造成转速波动,传统转矩控制将依据转速频繁进行控制逻辑切换,致使转速、功率大幅跌落;且在额定风速以上,传统转矩控制包含恒转矩和恒功率策略,二者在转矩、功率、传动链载荷方面各有优劣。为此,引入与桨距角相关的状态变量对转矩控制在额定转速附近的区域切换逻辑加以限制,并将转矩-转速控制曲线中的功率满发曲线段扩充到发电机额定转速以下的区域,以消除因转矩控制的区域频繁切换引起的转矩和功率跌落;然后,对转矩-转速控制曲线中的功率满发曲线段进行权值规划,兼顾风电机组额定转速附近的功率、转矩波动性能,并对连接最佳叶尖速比曲线段和功率满发曲线段间的过渡曲线进行动态优化。在典型湍流工况下对所提出的方法进行仿真验证,结果表明:改进的转矩控制策略提升了额定风速附近的风能捕获效率,消除了高风速区发电机转矩和功率跌落现象,合理地权值规划能兼顾转矩和功率性能。

SCADA与DCS一体化监控技术分析

面对油气田、LNG接收站、城市燃气、储气库不断高质量的发展、管理理念的创新、管理水平的进步,着重从行业自动化水平的角度对企业进行了分析,提出自动化水平提升的关键点和技术路线。从上述四个子行业的发展需求出发,分析集中调控、远程操作、一体化监控的必要性和关键性。通过分析多行业常用的数据采集与监控系统(SCADA)与分散控制系统(DCS)特性,指出实现一体化监控面临的主要问题,确定SCADA对DCS一体化监控的技术线路。