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Firstly, this paper investigated roundly the basic theory of the ambient vibration method, analyzed systematically the main methods of ambient vibration identification, and discussed their advantages and disadvantages. Then we established the finite element model of structural dynamics and test model and analyzed their mutual relation, improved MUSIC method and correlation function method in the harmonic identification, and gave the subspace method and correlation function method based on continuous model, which is multi-harmonic retrieve technique. And then, this paper also puts forward least-squares method to estimate directly structural physical and modal parameters; this approach replaced the derivative operator in the continuous time model with an equivalent approximation, and estimated the physical parameters of structures by the least-squares method. And then, we discussed the approximation methods of derivative and their convergence. Finally, this paper researched the modal parameters of a frame structure by the simulation and test. The results demonstrated that subspace method, correlation function method and the least-squares method are effective and stable respectively.

全面地研究环境振动识别方法的基本理论，系统地分析环境振动识别方法的主要方法，讨论它们的优点和不足；建立结(来源：6666AB44C论文网www.abclunwen.com)构动力学的有限元模型和试验模型，分析有限元模型与试验模型之间的相互关系；改进谐波识别中的MUSIC识别方法和相关函数识别方法，给出大型结构模态识别的连续型的子空间分解识别方法和相关函数识别方法，这个方法是多元谐波识别方法；提出直接识别结构的物理参数和模态参数的最小二乘方法，这个方法利用导数的近似值代替导数值，并运用最小二乘方法识别结构的物理参数，讨论导数近似值的选择方法，分析算法的收敛性；通过仿真计算和模型实验，研究高层框架结构的模态参数识别，验证子空间分解识别方法、相关函数识别方法和最小二乘识别方法的有效性，算法的稳定性；从理论和试验两个方面分析和研究噪声对识别精度的影响，影响识别精度的因素，以及部分模态成分的模态参数不能够被识别的原因。

Via the stochastic averaging method, the four-dimensional system is reduced to a two-dimensional one. Through the logarithmic polar transformation , and then Girsanov theorem and Feynmann-Kac formula, the backword differential operator is then obtained. By expanding the eigenfunctions as a Fourier cosine series, the approximate analytic expansion of the moment Lyapunov exponent is then obtained.

首先在经典二元机翼颤振方程加入随机激励，通过随机平均法，Girsanov定理和Feynmann-Kac公式得到关于矩Lyapunov指数的特征值问题，其次采用Fourier余弦级数对特征函数进行正交展开得到系统矩Lyapunov指数的近似解析式。

Then from his loftie stand on that high Tree [ 395 ] Down he alights among the sportful Herd Of those fourfooted kindes, himself now one, Now other, as thir shape servd best his end Neerer to view his prey, and unespi'd To mark what of thir state he more might learn [ 400 ] By word or action markt: about them round A Lion now he stalkes with fierie glare, Then as a Tyger, who by chance hath spi'd In some Purlieu two gentle Fawnes at play, Strait couches close, then rising changes oft [ 405 ] His couchant watch, as one who chose his ground Whence rushing he might surest seize them both Gript in each paw: when Adam first of men To first of women Eve thus moving speech, Turnd him all eare to hear new utterance flow.

魔鬼就是这样以"不得已"的暴君口实来开脱自己的罪恶的。然后从高耸的树上，高高的立脚点，降落在嬉戏着的四脚兽群之间，他自己变化无常，努力装扮成接近他的牺牲品的形状，以便神不知鬼不觉进行详细侦察，从他们的言语和行为，进一步观察他们二人的情况。

Secondly, the platform of IPTV set-top box named DM6446 is introduced, and then the AVS video coding standard which is implemented as the video coding standard of IPTV is introduced. The kernel architecture, peripheral devices of DM6446 and the key technique of AVS video coding such as transformation, quantization, intra-prediction, inter-prediction, interpolation, and loop filter is introduced in detail. Thirdly, the system procedures of set-top box which are implemented on the ARM side of DM6446 are introduced in detail. This part focuses on the demultiplex of audio and video data, the design of data interface, the playback of audio and video, and the communication between ARM and DSP. Fourthly, the loop filter algorithm of AVS video coding standard is introduced in full detail, and the optimized procedures of the algorithm on the DSP side of DM6446 are introduced, and then the optimized results are presented. Fifthly, the thesis introduces and analyzes the state-of-art technique of deblocking filter, and proposes a deblocking method, and then the results of proposed method are given. Finally, summarize of this thesis and further development is given.

首先对IPTV技术、视频编解码技术以及去块滤波技术做了简要介绍；然后介绍了IPTV机顶盒的实现平台DM6446，并介绍了该处理器的外围接口和内核结构，同时介绍了作为本IPTV系统视频标准的AVS第二部分视频标准，以及该标准中变换量化、帧内预测、帧间预测、插值和环路滤波等多个模块的算法；接着，详细介绍了机顶盒系统相应程序在DM6446 ARM核上的实现，重点介绍了音视频系统码流的解复用、数据接口设计、音视频的播放以及ARM核与DSP核之间的通信；然后，详细介绍了AVS视频标准中环路滤波算法及该算法在DM6446 C64+内核上的优化，并给出优化结果；然后对去块滤波算法进行了研究并提出了一种环路滤波方案，同时给出了此方案的实验结果；最后总结了本文的工作，并提出了可以改进的方向。

Made arrhythmia models of rats by injecting digitoxin,then treated then by injecting nifedipine and compared then with phenytoxin sodium group. Result Nifedipine can not cure arrhythmia,instead making it worse.

注射洋地黄建立大鼠心律失常模型，分别注射硝苯地平治疗，并与注射苯妥英钠组进行比较结果：硝苯地平不能治疗心律失常，反而使心律失常加重。

The best optimum conditions of the Agrobacterium mediated genetic transfornation were that leaves explants were immersed in the diluter 10 times Agrobacterium bacilli at OD600 of 0.6 for 8 minutes after being pre-cultured for 2 days,and then co-cultivated for 3 days.Then these explants were transferred to selected and rooting medium which contained 50 mg/L Kanamycin and 500 mg/L Carbenicillin.According to the transformation system, 54 transgenic plants were initially screened,then after PCR analysis and RT-PCR analysis 25 transgenic plants were obtained.

根癌农杆菌介导的芪合酶基因遗传转化的最佳条件为：将预培养2 d的烟草外植体，用稀释10倍的GV3101菌株菌液（OD600=0.6）浸染8 min后，共培养3 d，然后转入含卡那霉素50 mg/L和羧苄青霉素500 mg/L的筛选分化培养基上诱导分化，待抗性芽长到2～3 cm后，转入含Km 50 mg/L和Cb 500 mg/L的筛选生根培养基上进行筛选，在以上最佳遗传转化条件下，初步筛选到54株转化体，经PCR和RT-PCR检测获得25株转化烟草植株。

I want to shoulder responsibility to the oneself, do not discommode the my body hair skin, the thought affection, living well, wanting to cry and then cry, wanting to smile and then smile, wanting to love for the love, want to hate and then hate, send the oneself a good heart feeling every moment and as far as possible.

我要对自己负起责任，别委屈我的身体发肤、思想感情，好好地活，想哭就哭，想笑就笑，想爱就爱，想恨就恨，时时刻刻尽量送自己一份好心情。

First scanning the known handwriting materials then number them ,In pretreatment, we convert the valid part of the image into a standard size, as images carries out duotone and go throw off chirp handling in order to achieve better effect.draw features from the known handwriting materials with the Co-occurence,especially,we divided a copy of handwriting into 25 little pieces with the size of 128*128 ,drawing features from every little piecese with four directions(0 degree, 45 degrees, 90 degrees as well as 135 degrees) and calculate the four major feature values( veins and the statistical quantity of veins contrast and the statistical quantity of veins consistency Shang the statistical quantity of statistical quantity as well as the veins correlation of gray scale ), preservation all the feature value that drawn from all known ma terials to the handwriting characteristic database,then input the unknown handwriting materials, also using the method of the Co-occurence to draw those features, recycling the minimum European Distance law match the unknown writing material feature value with the handwriting characteristic feature database, export the label of the known hand writing materials which is most similar to the unknown material with minimum European Distance, and then we can confirm who is the author of the unknown material.

首先将笔迹材料作为图象扫描输入，并对其进行编号。预处理部分可将笔迹图象的有效部分规范化到一个统一尺寸，接着对其进行二值化和去除噪声的处理，以便于更好的提取图像的特征。在此我们采用了灰度共生矩阵法提取手写笔迹材料的纹理特征，与以往有所不同的是，我们将一份手写材料分割成64块大小为80*80象素的子图象，每个小块都从四个方向（0度、45度、90度以及135度）来更全面的提取特征，并计算出四个最主要的特征值（纹理一致性的统计量、纹理反差的统计量、纹理熵的统计量以及纹理灰度相关性的统计量），将从所有已知材料提取的特征值保存到纹理特征库中，对于待检手写材料，同样采用灰度共生矩阵的方法提取其纹理特征，再利用最小欧氏距离分类法将从待检手写材料中提取的特征值与纹理特征库中的特征值进行比对，与欧氏距离比对值最小的相匹配，输出匹配成功的原材料的标号，进而识别出待检材料书写者的身份。

The neighbors said it was the doctor first, then Emmeline, then the undertaker -- the undertaker never got in ahead of Emmeline but once, and then she hung fire on a rhyme for the dead person's name, which was Whistler.

邻居们都说，最先到场的是医生，然后是哀美琳，再后面是殡仪馆里的人――殡仪馆里的人从没有能赶在哀美琳前边的，除了一回，因为押死者惠斯勒这个名字的韵，多耽误了些功夫，这才来迟了。

Methods Animals were randomly and equally divided into five groups: saline control group, positive drug control group, low-dose, medium-dose and high-dose crocetin group. Animals were anesthetized with urethane (1.2 g/kg), then followed by the perfusion of aconitine (10 μg/mL) through caudal vein in rats, or of ouabain (9 μg/mL) through external jugular vain in guinea pigs in a constant velocity of 0.1 mL/min, and the emergence time of ventricular fibrillation, ventricular extrasystole, ventricular tachycanlia and cardiac arrest were then detected and recorded. The recorded time was then translated to the cumulated amount of aconitine and ouabain. Experimental arrhythmia was induced by rapid injection of 4% CaCl2 (140 mg/kg), and the emergence time, persistence time, incidence and death of arrhythmia after the administration were observed.

将实验动物随机分为生理盐水组，阳性药物对照组，藏红花酸高、中、低剂量组，SD大鼠采用1.2 g/kg乌拉坦麻醉后，从尾静脉匀速(0.1 ml/min)灌注10μg/ml乌头碱溶液，豚鼠麻醉后从颈静脉匀速(0.1 ml/min)灌注9μg/ml哇巴因溶液，观察出现室性期前收缩、室性心动过速、室颤和心脏停搏的时间，然后换算成乌头碱和哇巴因的累积量；快速推注4%氯化钙(140 mg/kg)诱导大鼠心律失常，观察给药后心律失常出现时间、持续时间、心律失常发生数及死亡数。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。