共查询到20条相似文献,搜索用时 20 毫秒
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本文基于电子计算机在实现实时系统中遇到的难题,提出了一种光电混合的智能决策系统--急诊决策系统。ETDS硬件是由3个N×N空间光调制器,N个电子处理器及一套微机系统组成。ETDS是基于贝叶斯概率理论,利用空间调制器的并行乘、存储、互连等特点实现实时决策系统。 相似文献
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介绍了5ESS交换机的软件补丁SU(Software Update)的基本知识,做SU前的准备工作,SU的安装过程和常见故障处理. 相似文献
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实时视频网络传输需要稳定的、大的数据带宽和高效的视频压缩方法。小波变换是一种新型的压缩方法,能够满足实时视频传输的低速率要求,文章针对实时视频的网络传输进行了研究,提出小波变换压缩方法及的具体实现,讨论了容错、纠错处理方法,并对系统进行了实验验证,结果表明基于小波变换的实时视频网络传输可以实现。 相似文献
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有线电视网络管理系统能适应CATV网络多任务管理的需要 ,提高整个网络的运行效益 ,减轻网台管理维护人员的劳动强度。介绍了CATV网络实时监控管理系统的硬件组成和系统特点 ,阐述了CATV网络实时监控管理系统中监控软件系统的设计思想、系统功能、各类视图的设计与实现以及监控参数的实时控制实现等。 相似文献
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以锁模光纤激光器为研究平台,利用色散傅里叶变换技术,实时观察到调制频率成比例的三周期隐形孤子脉动现象。通过分析孤子的演化特性,笔者所在课题组认为孤子的调制不稳定性引起了色散波和孤子的参量耦合过程,导致了色散波和孤子的能量交换,从而产生了参量边带和隐形孤子脉动。部分能量在色散波和孤子间的交换使得孤子总能量几乎不变。因此这种孤子脉动难以通过时域脉冲序列分辨。此外,文中实验分析了隐形孤子脉动完整的演化路径,即仅通过增加泵浦功率使得脉动产生至消失的过程。与传统的可见脉动过程相比,这种隐形孤子脉动的调制周期随泵浦功率的变化较小。该工作不仅加强了对孤子脉动动力学现象的理解,还对锁模激光稳定性的提升具有重要意义。 相似文献
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随着4G+技术的应用,5G时代的到来,电信运营商面临着被管道化和业务边缘化的风险。同时,跨界竞争不断加剧,传统通信业务市场趋于饱和,随着5G技术的部署与发展,世界正从“人人互联”向“万物互联”迈进,物联网和VR等互联网应用场景多样化,运维复杂程度越来越高。传统运维方式成本高、协作困难、效率低下,难以满足业务发展需求。近年来大数据和AI新技术的兴起,为加速运营商数字化创新提供了新的契机。运营商应紧抓机遇,积极探索AI网络运维应用场景,逐步推进人工智能与网络运维深度融合。 相似文献
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《Microwave Theory and Techniques》1985,33(2):149-152
Phase matching by the artificial anisotropic structure and its application to a mode converter are proposed for millimeter-wave dielectric circuitry. A phase-matched dielectric planar waveguide is designed and mode conversion characteristics are studied. An experimental result of the nonreciprocal mode converter are presented to show the usefulness of the structure. 相似文献
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This paper presents a table of coefficients for best linear unbiased predictors (BLUPs) using the earliest r failure times to predict the n-th (last) failure time of a sample from a s-normal (or lognormal) life distribution. They are used to predict how long a sample of components will run until all fail, that is, how long a life test will last. This includes prediction of the life of a parallel system of n identical components from the first r component failure times. The table covers n = 2(1)10, r = 2(1)n - 1. The BLUPs are exact (approximate) for failure (time) censored data. 相似文献
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(1064/1319,532/659nm)Nd:YAG激光治疗仪的实验研究 总被引:4,自引:0,他引:4
叙述了激光治疗仪双波长(1064/1319nm)输出的最佳方案及其性能指标:介绍了双波长输出的CW-Nd:YAG激光器参数的确定及其倍频实验,提出了用Ti:Mgo:LiNbo3晶体倍频的4波长Nd:YAG激光器5种输出的可行性方案。 相似文献
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分析及对比了各种定位方法和时间间隔的测量方法,针对室内定位系统,采用了到达时间差法(TDOA)来定位。设计了一种基于FPGA 的延时链内插型时间数字转换(TDC)电路,采用Xilinx公司的Spartan‐6系列FPGA实现这一设计。整个T DC系统分为精细时间测量模块、逻辑控制模块、粗计数器模块以及数据显示模块。首先介绍了室内定位技术和TDC的研究现状,然后描述了TDC的系统框架和每个部分的原理与设计,重点讲述了精细时间测量模块的设计,最后给出了仿真结果和TDC系统的实测结果,时间间隔测量精度小于200 ps ,满足室内定位系统的需求。 相似文献
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Ji Hoon Park 《The Journal of communication》2009,59(1):152-171
Through MTV's The Real World, this study examines the ideological implications of reality TV that recurrently constructs racial conflict between an urban Black and a rural White. The ideological potential in the audience reading of racial conflict on The Real World seems limited because the text's ideological premise, the idea that racial problems are matters that can be resolved through interpersonal reconciliation rather than challenging racism as a system, was forcefully reinforced in the audiences' discussion about the show. However, the depiction of racial conflict on reality TV has a progressive potential in that it may make race a focal point, helping some viewers be aware of the importance of an open dialogue about different racial perspectives and experiences, which is an indispensable step toward recognizing racial problems in the broader society. 相似文献
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From a systems standpoint, Lambda Pi Eta is an influential subsystem within the Communication discipline. The input–throughput–output teaching-learning dialectic arguably achieves maximum potential at the point where the student is positioned. The evolution of the Arkansas Alpha LPH chapter into an accredited national honor society, documented in the words of the founding student and professor, illustrate key concepts of systems thinking, sense-making, and “learning organizations.” Envisioning the student-scholar, the honor society, NCA and its institutional members, and their interconnected partners as a transformative “super-system” fosters appreciation of the active role students play in networked realms of 21st century communication and education. 相似文献
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Franco Stellari Peilin Song John Hryckowian Otto A. Torreiter Steve Wilson Phil Wu Alberto Tosi 《Microelectronics Reliability》2005,45(9-11):1550
The Picosecond Imaging Circuit Analysis (PICA) technique using the Superconducting Single-Photon Detector (SSPD) allows the detailed characterization of pulse width variations along the delay chain of a high speed Self Timing Interface (STI). Pulses gradually shrink and finally disappear along the delay chain. 相似文献