查询词典 real time

This project was established based on the first cooperative development of optical in situ real time detecting technique probing the atomic scale layer-by-layer epitaxy growth of oxide film. Over the last three years, we have given full play to the advantages and characteristics of both sides and have finished the assumptions and plans of this subject satisfactorily. 1. In Institute of Physics, we set up advanced oblique-incidence reflectivity difference equipment and wrote one data acquisition procedure that made the simultaneous detection of optical signal and RHEED signal into reality. 2. The first observation of sustained oscillations over hundreds of monolayers in both real and imaginary signals during the epitaxy growth of SrNb0.1Ti0.9O3 on SrTiO3 substrate in LMBE testifies that oblique-incidence is an excellent method to detect and monitor film epitaxy growth real time. 3. For the first time, we verify that oblique-incidence reflectivity difference method can be used to monitor the layer-by-layer growth mode during continuous growth through the correspondence between optical signals to atomic or molecular step edge density on the growth surface. 4. Phenomenological analysis shows that optical signals comprise three parts, the first is proportional to the average thickness of the film and depends on the bulk phase dielectric response; the second is proportional to the coverage of terraces and depends on the dielectric response of atoms or unit cells in the terrace; the third is proportional to the coverage of step edges and depends on the effective dielectric response of atoms or unit cells at step edges. This makes oblique-incident reflectivity difference technique a quantitative macroscopic method to monitor film growth.

中文摘要：本课题是在合作首次发展了氧化物薄膜原子尺度层状外延生长光学原位实时探测方法的基础上立项的，三年来，我们充分发挥双方的优势和特点，圆满完成了课题的设想和计划。1、在物理所建立了一套先进的光反射差法装置，编写了计算机系统的数据采集程序，实现了两路光学信号和RHEED数据的同步采集和显示。2、用激光分子束外延在SrTiO3基底上生长SrNb0.1Ti0.9O3薄膜，首次观测到连续外延几百个原胞层，周期振荡的光反射差实部和虚部信号，证明了光反射差法是一种能原位实时探测与监控薄膜层状外延生长的好方法。3、首次验证了通过对生长表面原子或分子台阶密度的响应，光反射差法可用于原位实时监测在连续生长条件下薄膜的层式生长模式。4、通过唯象理论的研究，证明光反射差信号由三项组成，第一项只与薄膜的平均厚度和宏观光学电介质常数有关；第二项与分子台阶面覆盖度和台阶面上分子层的光学电介质常数有关；第三项与台阶边缘的覆盖度成正比，并和在台阶边缘的分子的有效光学介电常数有关。

Mainstream distributed application systems are middleware based systems presently, but common middleware lack of real-time capacity.Real-time middleware offers a common soft bus framework eliminated distributed real-time systems unhandy architecture.

实时中间件提供了真正的通用软件总线结构，它可以去掉当前分布式实时系统的不灵活结构，因此中间件与实时系统的结合自然成了今后分布式实时系统的一个重要发展方向。

Due to the development of real-time systems, more and more safety-critical applications become use real-time system as the kernel of the control system, and real-time systems become an affectable factor to determine the dependability of the safety-critical application.

摘要随着实时计算技术的飞速发展，越来越多的安全关键应用依赖实时系统作为核心控制部件，实时系统成为影响安全关键应用性能和可靠性的决定性因素。

CAN bus has been the most promising fieldbus and it has been widely used in many areas, but with the increasing of complicacy in automation systems for industrial controlling, people have more and more strict requirement to the real-time capability of information, So it is very important to study the real-time characteristic of CAN protocol for surmounting the limitation of aptotic priority in CAN protocol by taking effective measures and improving the real-time characteristic of communication system based on CAN bus.

CAN总线是目前最有前途的现场总线之一，它已经在多个领域得到了广泛的应用，然而随着工业控制自动化系统复杂性的增加，对信息实时性的要求越来越高，因此，研究CAN协议的实时性问题，采取合理的措施克服CAN协议中固定优先级机制的缺陷，提高CAN总线通讯系统的实时性具有重要的应用价值。

A better algorithm and corresponding real time implementation scheme are proposed. By methodic arranging the clocks of CPU and AD/DA, the scheme can not only scale the pitch in two octave range effectively, but also process the real time input audio for synchronous scaling output. The experimental results on Windows platform indicate the modest CPU and memory consumption, so as to meet the requirement of real time applications.

改造后的实时变调算法与实现方案通过合理控制CPU时钟和AD/DA时钟的时序关系，不仅能够在两个八度音范围内进行有效的变调，而且能够对实时输入的音频信号进行同步变调输出，在Windows平台上验证实验还表明新方案具有较低的CPU占用率和内存消耗，能够满足实时应用的要求。

The application status of Real time and Embedded softwa re is introduced in this paper firstly ,and based on analyzing character of Real time and Embedded softwar e including real time nature ,embed nature and reactive nature, the paper summar izes the current domestic and foreign research thing of this field ,including va rious kinds of test method, test ...

本文首先概括地介绍了实时嵌入式软件的应用现状，在详细分析了实时嵌入式软件的特征—实时性、嵌入特性和反应性—的基础上，综述了在该领域的国内外测试现状，包括各种测试方法、测试工具、测试策略和存在的问题。最后，对实时嵌入式软件的测试进行了小结。

The application status of Real time and Embedded softwa re is introduced in this paper firstly ,and based on analyzing character of Real time and Embedded softwar e including real time nature ,embed nature and reactive nature, the paper summar izes the current domestic and foreign research thing of this field ,including va rious kinds of test method, test tool, test strategy and problems.

这些特性主要表现为实时性、反应性和嵌入特性。这些特点向实时嵌入式软件的测试提出了许多新的挑战。本文首先详细分析了实时嵌入式软件的应用特点，分析了这些特点对测试带来的困难，并详尽地介绍实时嵌入式软件的测试技术，包括测试方法、测试策略和测试现状。

This article is based on the research of " the helicopter ' s aviating load - data harmonized loading and sampling technology ". we studied the question of real - time in the helicopter ' s aviating load - data sampling system , and finally realized the real - time extension of the system which based on windows2000 to improve the real - time performance of the system

直升机飞行载荷数字化协调加载及数据采集技术研究，对数据采集系统中的实时性问题和实时扩展技术展开深入研究，最终实现了基于windows2000测控系统的实时扩展，并将其应用于实际的采集系统研制和开发中。

This study choose Changle Gaoya reservoir irrigation areas as the study sites, through the installation of different ultrasonic equipment on open channel of non-uniform flow to study the flow gauging of non-uniform flow in open channel:(1)5 tracks ultrasonic open channel flow meter used to real-time monitoring the flow of velocity ,water depth and discharge;(2)Ultrasonic liquid level gauge used to real-time measure the upper level and tail level of the two sections ,then the computer calculated average water level, gradient of water table and discharge;(3)Change the open channel water conveyance into pipeline full flow water conveyance, installed the ultrasonic liquid level gauge and pipe flow gauge on the inflow point and surface of pipe, water level and discharge would detect in real time.

本研究以山东省昌乐县高崖水库灌区为研究地点，通过安装在灌溉明渠上的不同超声波设备对明渠非均匀流的测流进行了研究：(1)用五声波超声波明渠流量计对测流渠段的流速、水深及流量进行了实时监测；(2)用超声波液位计将测流渠段的上下游两断面水位实时测出，再用计算机分时段算出平均水位、水面坡降及流量；(3)将测流渠段明渠输水改造成管道满流输水，分别在管道进口前及管管上安装超声波液位计和管道式流量计，将水位和流量实时测出。

On the theory of real-time CGH, using LCD, spherical and helical wavefronts are produced real-time, and compared with wavefront whose CGH is recorded by film. An aspheric is tested with real-time CGH.

运用实时计算全息技术，采用液晶板，实时产生了球面、螺旋面波前，经与胶片记录的计算全息图对应比较，其结果良好；并进行了实时计算全息测量非球面的实验。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。