摘要：介绍了static关键词定义Java类变量,类方法及初始化器,static在main()方法和单例设计模式中的应用,使Java编程人员对static关键词的使用有更深入的理解,并能灵活应用于Java编程中。

摘要：In this paper, we examine the problem of designing power system stabilizer (PSS). A new technique is developed using particle swarm optimization (PSO) combined with linear matrix inequality (LMI). The main feature of PSO, not sticking into a local minimum, is used to eliminate the conservativeness of designing a static output feedback (SOF) stabilizer within an iterative solution of LMIs. The technique is further extended to guarantee robustness against uncertainties wherein power systems operation is changing continuously due to load changes. Numerical simulation ahs illustrated the utility of the developed technique.

摘要：In Georgian the verbal form comprises the names expressing the subjective-objective references of certain quantity,which shows the representing signs to express the category of the subjective and objective ***,sometimes the subjective person is expressed by the sign of the objective person or vice versa,which is called inversion in Georgian *** are many options about the reason of *** static verbs are considered as the oldest verbs as believed by many *** are the verbs of feeling and owning;they are inverse,bipersonal and hold the dative *** think that inversion cannot be only explained with the static *** are the verbs,which are not static but are *** believe that it must be one and the same aspect in every case:perfect *** Indo-European languages,the verbs of the perfect semantics have been converted from the class of the lexical words into the grammar *** the Georgian language encountered the need to express the perfect forms respective to Indo-European languages,thus,the third series has been generated and it used the form as the model,belonging to the verbs of bipersonal non-transitional“perfect semantics”in *** form has been supplemented by preverb and has become dynamic and gradually acquired various semantic nuances characterizing the perfect tense:resultativity,will,evidentiality,interrogative and negative,*** our opinion such verbs are not the continuation of the I and II series;they are the standalone link of the verb system,namely the perfect group characterized with the dative construction,which is inverse and always bipersonal.

摘要：In this paper, the Authors present the designing of power system stabilizer (PSS) and static var compensator (SVC) based on chaos, particle swarm optimization (PSO) and shuffled frog leaping (SFL) Algorithms has been presented to improve the power system stability. Single machine infinite bus (SMIB) system with SVC located at the terminal of generator has been considered to evaluate the proposed SVC and PSS controllers. The coefficients of PSS and SVC controller have been optimized by Chaos, PSO and SFL algorithms. Fi-nally the system with proposed controllers is simulated for the special disturbance in input power of genera-tor, and then the dynamic responses of generator have been presented. The simulation results show that the system composed with recommended controller has outstanding operation in fast damping of oscillations of power system and describes an application of Chaos, PSO and SFL algorithms to the problem of designing a Lead-Lag controller used in PSS and SVC in power system.

摘要：CMOS devices play a major role in most of the digital design, since CMOS devices have larger density and consume less power. The integrated circuit performance mostly depends on the basic devices and its scaling methods, but in conventional CMOS devices in ultra deep submicron technology, leakage power becomes the major portion apart of dynamic power. The demerits of the conventional CMOS is less speed and, more leakage, for any digital design PDP is the figure of merit which can be used to determine energy consumed per switching event, hence we designed a NOVEL NMOS and PMOS which has superior performance than conventional PMOS and NMOS, the design and performance checked at 90 nm, 180 nm and 45 nm technology and calculate the performance values.

摘要：With regard to the human exploration of Mars, low energy transfer trajectory is designed for Mars exploration based on the combination of invariant manifolds, differential correction and aerobraking methods. The whole transfer trajectory is composed of four stages: 1) from the Earth parking orbit to the Lyapunov orbit around Lagrange point L2 in the Sun-Earth system;2) from the Lyapunov orbit around L2 to the Lyapunov orbit around L1 in the Sun-Mars system;3) from the Lyapunov orbit around L1 in the Sun-Mars system to the large elliptical orbit around Mars;and 4) from the large elliptical orbit around Mars to the near-Mars parking orbit. In the first three stages, the circular restricted three-body problem is considered, and the trajectory is designed by using invariant manifolds and the differential correction method. The simulation results show that the transfer trajectory designed by means of the invariant manifolds of the Lyapunov orbit costs lower energy and shorter time of flight than that designed by means of the invariant manifold of the Halo orbit. In the fourth stage, the two-body problem is considered, and the aerobraking method is applied. A comparative performance analysis of static and rotating atmospheric models is carried out by using the details of duration, aerodynamic loading of the Mars vehicle, and other orbital parameters. It is shown that, on the low periareon where the influence of the atmospheric density increases, the changes of orbit parameters between rotating and static atmospheric environments are in large difference, such as orbital semimajor axis, orbital eccentricity, and so on. The influence of Martian rotating atmospheric environment should be considered.

摘要：Power consumption is the bottleneck of system performance. Power reduction has become an important issue in digital circuit design, especially for high performance portable devices (such as cell phones, PDAs, etc.). Many power reduction techniques have also been proposed from the system level down to the circuit level. High-speed computation has thus become the expected norm from the average user, instead of being the province of the few with access to a powerful mainframe. Power must be added to the portable unit, even when power is available in non-portable applications, the issue of low-power design is becoming critical. Thus, it is evident that methodologies for the design of high-throughput, low-power digital systems are needed. Techniques for low-power operation are shown in this paper, which use the lowest possible supply voltage coupled with architectural, logic style, circuit, and technology optimizations. The threshold vol-tages of the MTCMOS devices for both low and high Vth are constructed as the low threshold Vth is approximately 150 - 200 mv whereas the high threshold Vth is managed by varying the thickness of the oxide Tox. Hence we are using different threshold voltages with minimum voltages and hence considered this project as ultra-low power designing.

摘要：单粒子辐射效应严重制约FPGA的空间应用,为提高FPGA在辐射环境中的可靠性,深入研究抗辐射加固FPGA单粒子效应评估方法,设计优化单粒子效应评估方案,开发相应的评估系统,提出基于SRAM时序修正的码流存储比较技术和基于SelectMAP端口配置回读技术。借助国内高能量大注量率的辐照试验环境,完成FPGA单粒子翻转(SEU)、单粒子闩锁(SEL)和单粒子功能中断(SEFI)等单粒子效应的检测,试验结果表明,该方法可以科学有效地对SRAM型FPGA抗单粒子辐射性能进行评估。

摘要：本文以COSMOS/M在西安车辆厂的成功应用为例,介绍了该软件静强度分析的Linerstatic部分对工程设计的帮助。

摘要：本文主要讲述VB程序设计变量的作用,变量的定义、类型及其作用域和生存期问题。对于初学程序设计的读者具有非常重要的参考和借鉴意义。