研究出

The optimal collocated positions of secondary source with two microphones are studied and the separate of transfer function method that reduce the influence of acoustic feedback are developed based on plane wave transmission theory of sound and concept of transfer function in a duct. After, In order to identify the variation of the signals and find out individual correlation coefficient, cross correlation function analysis between primary noise signal and reference input signal is processed.

本文根据管道声场的平面波传递理论，进行第二声源与两个感测麦克风之间的位置配置研究，配合数位讯号处理的技术，发展出转移函数分离法，以消除声场回授的影响，之后，再将使用和未使用转移函数分离法的讯号个别与主要噪音源讯号做交互相关函数的运算处理，辨识讯号之间的差异，找出个别的相关性系数。

The main job and contribution of this paper are as follows:Based on narrowband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, compute the cross-correlation function of FH signals from multichannels, then we get the cross power spectral density matrixCSDM Secondly, select the hops of FH signals from the CSDM via processing and analyzing the CSDM, meanwhile reduce the influence coming from noise, fixed frequency signal and other interferences; Lastly, estimating the DOA of every hop and according to the DOA, we can separate the hops, get the number of FH signals and their parameters. Propose a new method for designing the threshold in FH signal detection. This method makes it easy to get the threshold by theoretic computing and it can extremely reduce the interference of non-FH signals.Based on broadband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, get the DOA of the signals by wideband spatial spectrum estimation; secondly, separate the signals by spatial filtering using wideband beamformer; Lastly, we propose two methods for FH signal blind detection and blind parameter estimation, one is for several constant hop-rate FH signals whose dwell-time are different and another is for a single FH signal whose hop-rate is alterable.By employing spatial interpolation in broadband signal beamforming, it can reduce the number of antenna elements and corresponding RF modules, A/D converters, etc. It can also eliminate the mutual coupling between antenna elements while getting the narrower main beamwidth and lower sidelobe level.

本文的主要研究工作和贡献如下：●提出了一种基于窄带处理的FH信号盲检测和参数盲估计的实现方法，即首先求出多路信号之间的互相关，进而得到互功率谱密度矩阵，然后通过对CSDM进行对折处理来抑制噪声、定频信号及其他干扰的影响，并将所有属于FH信号的hop(每一跳的驻留时间在时频图上持续的线段)从CSDM中筛选出来，最后用阵列信号处理中的到达方向估计理论在频域中估计出各个hop的方向参数，利用方位信息完成FH信号分离并得到FH信号的数目及其各自的参数集；●提出了一种确定FH信号检测门限的策略，该策略不仅使得检测门限能够通过理论计算得到，而且还显著地抑制了非跳频信号的干扰，从而能有效地检测出FH信号；●提出了一种基于宽带处理的短波FH信号盲检测和参数盲估计的实现方法，即首先利用宽带空间谱测向技术得到接收信号的DOA，然后采用宽带波束形成技术对特定方向进行空间滤波，实现多个信号的分离，最后分别提出了两种FH信号的盲检测和参数盲估计方法，第一种方法适用于空间某个特定方向上存在着几个驻留时间不同的恒跳速FH信号和其他干扰信号的混合信号，第二种方法适用于空间某个特定方向上仅含一个可变跳速的FH信号和噪声的混合信号；●将空间插值的概念和宽带波束形成技术结合起来，提出了一种基于频域处理的宽带恒定束宽的波束形成方法。

Various technologies of cyanidation have been studied systematically for gold extraction from a low copper-containing ore.

首先研究了铜矿物类型对金氰化浸出的影响，提出了氰化易溶铜的概念，结果表明，当浸出原料中氰化易溶铜含量大于0.1％时就不适于采用直接氰化法提金。

A new process for treatment of high-sulphur and high-arsenic gold concentrate was studied, with included the roasting at lower temperature with the addition of alkali fusion agent and the cyanidation leaching with the addition of active additive.

摘 要：研究富硫高砷金精矿在加入碱熔剂经低温焙烧预处理后，再加活性添加剂条件下的氰化工艺，结果表明，金的氰化浸出率从直接氰化或沸腾炉焙烧后的焙砂氰化的30%～50%提高到87%～93%，浸出速度也有很大提高。

Through study of cyclic active database rule sets and analysis of triggering graph and activation graph, we present the concept of united formula and the algorithm to determine termination of a rule set corresponding to a cyclic triggering graph. We also present the time complexity analysis of the algorithm.

我们针对有环时的规则集的终止性进行了研究，通过对触发图、活化图的分析，提出了联合公式的概念，在此基础上给出了判定有环触发图对应的主动规则集的终止性算法，并给出了时间复杂度分析。

With the application of concept and method of programme stratigraphy and event stratigraphy,starting with the research for the cycle sediment,where the cyclothem of sequence of the outcropping stratum of mesoproteroxoic and neoproteroxoic era grade may be classificated into four different grade there occur from old to new one in Fangjinshan monutain group,one in Xiajiang group the same as one first stratum,and two in Sinian system involving Ti...

应用层序地层学及事件地层学的概念和方法，从沉积旋回的研究入手，首次在该区出露的中、新元古代地层中划分出 4个不同级别的旋回层，即梵净山群 1个(相当于 1个一级层序)、下江群 1个(相当于 1个一级层序)、震旦系 2个(即铁丝坳组—大塘坡组和南沱组—灯影组，相当于 2个二级层序)。

Src l was an acidic cytolysin, which was reported forthe first time. The cDNA encoding the mature Src l was cloned into non-fusion expression vectorpBV220 and expressed successfully in E.coli DH5α in inclusion body. After washing anddenaturing-renaturing, the recombinant Src l protein was purified by Q Sepharose FastFlow ion exchange chromatograph and Phenyl Sepharose hydrophobic interactionchromatograph.

首先构建了Src I基因的非融合蛋白表达质粒pBV220-Src I，并成功地在原核细胞E.coli进行了重组表达，筛选出稳定表达的工程菌株DH5α，摸索了稳定表达的条件，摸索了包涵体的洗涤、变性和复性条件，摸索出了复性蛋白Src I的纯化工艺，纯化过程简单，经QSepharose Fast Flow阴离子交换层析和Phenyl Sepharose疏水层析两步纯化，就可获得了高纯度的重组蛋白样品(纯度达99％以上)，该纯化方法适合重组蛋白的大量纯化，为Src I的性质、结构和功能研究奠定了良好的基础。

The study use Input-Output method and Dartboard approach, utilize the data , such as "I/O Tables "Industry production Index", in order to finding out "space distribution" and "space concentration of the pharmaceutical industry ,and figure out the high relationship between pharmacy and manufacturing industry, in order to find out the industry cluster of Pharmaceutical industry.

本研究以投入产出法、标靶分析法，并利用「产业关联表」、「台闽地区工厂名录」等资料，找出制药产业的「空间集中」及「空间分布」，以及制药产业的高度关联产业，以期找出制药产业群聚现象。

It's important to point out that the aim of this study was not to find out whether DCA could treat glioblastoma, but to figure out the safest dose to use for cancer patients.

重要的是要指出，这一研究的目的是不是要找出DCA是否可以治疗胶质母细胞瘤，而是找出最安全的使用剂量为癌症病人。

On thebasis of Ds pure leptonic decays, the Ds decay constant is given by:By using the traditional method, that is, taging a Ds first, checking the remaining part of theevents, the consistant and compatible results are got.

利用Ds的单标记，即先标记出Ds，再研究事例的剩余部分，给出了一致的结果。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。