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    It is a valuable filed on how to design the correct protocol in various environments.
    在不同的环境下如何设计正确的认证协议是一个值得研究的题目,这包括协议的设计过程和分析过程。
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    How to combine grey theory and digital image processing technology together and develop a kind of new image process method, it is a question that is worth probing into.
    如何将灰理论与数字图像处理技术结合起来发展一种新的图像处理方法,是一个值得探讨的问题。
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    The generationand propagation process of human pulse signal is analyzed. The pulse signal is re- garded as the convolution of the heart excitation source signal and the pulse system impulse response. It is a "blind sigh-source separation" problem to extract the characteristics of the pulse source and the system from the pulse signal.
    分析了脉搏信号的产生与传播过程.指出人体脉搏信号可看成是由心脏激励源信号与脉搏系统冲激响应的卷积,提取脉搏源特征与脉搏系统的传播特性是一个“盲信源分离”问题.因此,本文采用同态解卷技术对脉搏信号进行处理,获得了脉搏源的特征和脉搏系统的传递函数。
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    Third Generation Mobile Communication System,It is a complex problem about how to how to realize Iu Interface between Mobile services Switching Centre(MSC)and Radio Network Controller(RNC).
    在第三代移动通信系统中,如何实现移动业务交换中心(MSC)和无线网络控制器(RNC)之间的Iu接口是一个复杂的问题。
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    It is a significative attempt to apply the new theory of Hilbert-Huang transform to detect pitch period from a speech signal.
    最后,需要指出的是,H ilbert-Huang变换作为一种新的信号分析方法,被成功地用于提取语音信号的基音周期,这本身是一个有意义的探索,它为拓展H ilbert-Huang变换理论的应用给出了一个新的尝试.
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  is one of
    When the medium access control (MAC) protocol is taken into consideration, it is one of the important factors in performance and QoS problem of wireless networks.
    同有线网络相比,无线网络在性能和服务质量方面还有很大差距,这除了其物理传输介质的固有特点之外,实现介质共享的MAC层协议是一个非常重要的因素。
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    Target detection techniques based on SAR images is one of the most important techniques in the whole Auto Target Recognition (ATR) system.
    目前,许多研究机构都致力于研发SAR图像自动目标识别系统(ATR),SAR图像目标检测技术在整个目标识别系统中是一个重要的环节。
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    The problem of base-on MPEG-4 video object segment is one of kernel problems of MPEG-4 and a very complicated problem.
    基于MPEG-4的视频对象分割是MPEG-4标准的核心问题,同时,也是一个非常复杂的问题。
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    In MAGNET(My Personal Adaptive Global Net) air interfaces for PANs(Personal Area Networks) are investigated. SISO-MC-SS(single input single output Multi-Carrier Spread Spectrum) System is one of Candidate air interfaces for the high data rate (HDR). SISO-MC-SS is an OFDM based air interface with spreading in frequency domain.
    在MAGNET(My Personal Adaptive Global Net)项目中,为个域网(PANs,Personal Area Networks)开发的各种空中接口被广泛研究,单输入单输出多载波扩频系统(SISO-MC-SS,single input single output Multi-Carrier Spread Spectrum)是高速数据通信的候选空中接口,单输入单输出多载波扩频系统是一个基于OFDM在频域进行扩频的空中接口。
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    In ATM networks, switching is one of the major bottlenecks.
    在ATM网络中,交换机是一个主要的瓶颈。
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    At the same time, to adapt to the development of the communicationnetworks the communication system must be an Intranet system thatis isolated to Internet by using TCP/IP protocols.
    同时,通信总台也是一个基于TCP/IP协议、具有良好的开放性、能适应通信网的不断发展、与Internet完全隔离的Intranet系统。
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    To a (n, k, t) RS code, when v, the number of the errorsymbol in its received words r(x), is equal to t, rn-1 must be an inaccurate symbol if and only if det(Njt+1) = 0 and nonzero element B = det(Njt)/det(Mjt-1) exist.
    对于一个(n,k,t)RS码,其接收码字,r(x)中错误符号的个数v=t时,仅当非零元素β=det(N_t~j)/det(M_(t-1)~j)存在以及det(N′_(t+1)~j)=0时,符号r_(n-j)才是一个错误的符号。
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    4G system is going to be an IP-based convergence network with many heterogeneous structures.
    4G系统将是一个在IP基础上融合的、具有多种异构性的网络。
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    It is expected to provide audio, data, video and multimedia service, and should be an open packet network architecture based on uniform protocols.
    下一代网络应是一个能够提供包括话音、数据、视频和多媒体业务的网络,是一个基于统一协议的分组网络,采用开放的网络架构体系。
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    Multicast could prove to be an efficient way of providing necessary services for these kinds of application, so it is a good solution to use multicast in the wireless education.
    组播是一种能够有效地节省网络资源的传输方式,因此在无线网络教育中使用组播是一个很好的解决方案。
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    Frequency assignment problems are NP-Complete problems.
    频率分配的问题是一个典型的NP-Complete问题。
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    How to apply video services on network and ensuring the reliable and steady operation of the system services is a problem that need to be discussed and studied.
    如何在网络上应用视频服务,并确保系统服务的可靠稳定运行是一个需要研究探讨的问题。
    The first one is the two-state susceptible infected- susceptible (SIS) model.
    一个是SIS模型,这是一个双态模型。
    Through the analysis in this paper, it can prove that INS/GPS/SAR integrated navigation system is a system of high reliability, independence, fault-tolerance and navigation precision.
    通过本文的研究,证明INS/GPS/SAR组合导航系统是一个具有高可靠性、高自主性、高容错性、高精度的组合导航系统。
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    In this dissertation, some approaches are given to optimize the memory usage of SOC. Since the MPEG-2 decoding chip is a SOC, 32-bits embedded RISC CPU core is used to decode the AC3 and TS bit stream.
    论文设计的MPEG-2系统集成解码芯片是一个SoC,该SoC采用32位嵌入式RISC CPU核Virgo进行音频AC3和TS流解码的计算任务,并承担SoC的管理;
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  it is a
We describe a basis forY, show that it is a polynomial algebra and describe its rank, which we compute explicitly in a number of cases.
      
We next show that this result is best possible by including a result of Kalton: A frame can be represented as a linear combination of two orthonormal bases if and only if it is a Riesz basis.
      
It is a genuine Clifford analysis construct, which is shown to be a refinement of the classical multi-dimensional Fourier transform.
      
It is a fact that the feedback delay actually arises in digital control systems.
      
A new SQP type feasible method for inequality constrained optimization is presented, it is a combination of a master algorithm and an auxiliary algorithm which is taken only in finite iterations.
      
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The Calderón Projector, is one of the most important tools in the study of boundary value problems for elliptic operators.
      
The Density Theorem for Gabor Frames is one of the fundamental results of time-frequency analysis.
      
Spontaneous potential well-logging is one of the important techniques in petroleum exploitation.
      
The FFD algorithm is one of the most famous algorithms for the classical bin packing problem.
      
A seaweed-chamber experiment was performed, indicating that gaseous I2 is one of the important precursors that lead to new particle formation in the presence of solar light in the ambient air at the coastal tidal area.
      
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  be an
Let denote an orthogonal symmetric Lie algbra and let (G, K) be an associated pair, i.e., Lie(G = and Lie(K°) =.
      
Let k be an integral domain, n a positive integer, X a generic n × n matrix over k (i.e., the matrix (xij over a polynomial ring k[xij] in n2 indeterminates xij), and adj(X) its classical adjoint.
      
Let k be an algebraically closed field of characteristic p ≥ 0.
      
Let G be an algebraic group acting on an irreducible variety X.
      
Let X be an affine irreducible variety over an algebraically closed field k of characteristic zero.
      
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This article introduces a new circuit of wide band square-wave generator, producing square-waves from 15 Hz to 1.2 MHz in seven steps, with rise time, of about 0.04 μs., the highest out put-signal level being13.5 v. peak to peak.Finally, some experimental examples of square-wave application are given.

本文介绍一个矩形波发生器的新电路,可以产生七种不同频率(由15赫至1.2兆赫)的矩形电压,建立时间约0.04微秒,轮出的最大振幅达13.5伏。后面还提出一些应用矩形电压的实验范例。

This article, a result of research work caried On in connection with Teaching, aims at presenting an analysis of the basic circuit of the resistance strain gage withaut amplifier, including therin (1) a computation of the relation between the resistance of each branch of the bridge and the sensitivity of galvanometer on the one hand and the sensitivity of the gage on the other and (2) a brief discussion of the limitations in regard to both the construction and the utilization of the strain gage without amplifier...

This article, a result of research work caried On in connection with Teaching, aims at presenting an analysis of the basic circuit of the resistance strain gage withaut amplifier, including therin (1) a computation of the relation between the resistance of each branch of the bridge and the sensitivity of galvanometer on the one hand and the sensitivity of the gage on the other and (2) a brief discussion of the limitations in regard to both the construction and the utilization of the strain gage without amplifier Itconcludes with a constructive critieism of Comrade Yu-chuan Chia's article appeared in the second issue of the periodical with the title "The Resistance Strain Gage for Static Deformation—Its Design and Its Construction."

本文是結合敎學工作進行研究的一個結果,提供了對不帶放大器的電阻應變儀基本電路的分析,包括(1)電橋各臂的電阻和檢流計的靈敏度與應變儀靈敏度的關係的計算;和(2)對不帶放大器的應變儀在製造和使用方面的限制的簡短討論。並提出對本刊第二期贾有權同志:“测靜荷的電阻式應變儀的設計和製造”一文的一些改進意見。

~~

这篇試驗报告的内容分三部分:1.电传机內在畸变的校正,2.双音調通信,3.調幅制載波电报改裝为移頻制。我国目前使用的电报設备中,电传机和調幅制載波电报机占很大的比重,这两項設备工作性能的优劣和电报通信的質量有密切的关系。存在的間題是:1.电傳机依照說明書的规定和凭工作人員的经驗不易調整到理想的狀况;2.調幅制載波电报設备不能耐受电平的突然波动,如果电传机調整得不够理想,以及通信时电平发生突然的变动,就会产生变字,在通信中造成技术性的差错,降低了电报的質量。这里第一部分敘述一个計算电传机内在畸变的方法,从計算出的各項內在畸变的数值,可以迅速地將电传机調整到比較理想的狀况;第二部分是講將两个調幅通信路作为一路使用,以提高对于电平突然波动的耐受能力;第三部分是关于直接將一个調幅通信路改裝为移頻制,既可得移頻制能耐受电平突然波动的优点,又可不致浪費使用通信路,一个通信路仍可进行一路通信。一、引言二、电传机內在畸变的校正三、双音調通信四、調幅制載波电报改裝为移頻制

 
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