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Methods Firstly, 2-D matrix X with each ECG-cycle as a column vector was constructed. Secondly, the principal components of X based on Karhunen-Loeve Transform were gotten to reconstruct X from the first eigenvector of XXT.

首先以逐拍心电波形为列矢量构造二维矩阵X，再通过KL变换得到X的主分量，然后由X的最大特征向量重构X。

Paul Erds once posed the following problem about real line R: is it true that, for every infinite set X, there is a closed set E with positive lebesgue measure such that E doesn't contain any subset similar to X (I.e., there is no subset of E, which is a linear homeomorphic image of X). In 1984, K. J. Falconer proved the following: for a decreasing sequence of positive numbers {xn} such that \%lim\%xn=0 and \%lim\%(xn+1)/=1, Erds problem has a partial positive answer.

叶盛 Paul Erds曾提出如下关于实直线R的问题：是否对R的每一个无限子集X，都存在一个具有正测度的闭子集E，使得E的任何子集都不相似于X(E的任何子集都不与X线性同胚)。1984年，Falconer证明了如下结论：对于一个满足limxn=0和lim(xn+1)/=1的单调递减的正实数列{x n}，Erds问题有一个部分肯定的解答。

The OQO model 02 with pocketable ultra mobile form factor incorporates 1.2GHz or 1.5GHz VIA C7M VLA ultramobile processor, and features 30GB or 60GB hard drive shock-mounted with active drop detection, 512MB or 1GB DDR2 SDRAM, 5 800 X 480 native but interpolated up to 1200 x 720 indoor/outdoor readable LCD display, HDMI output for connectivity to HDTV displays or DVI monitors up to 1920 x 1200, VGA output through bundled VGA/Ethernet adapter for analog monitors up to 1920 x 1200, DisplaySense for detection and recall of external display settings, ergonomic thumb keyboard with SmartLock modifier keys on ergonomic backlit keyboard, mouse buttons and integrated track stick pointing device, integrated capacitive TouchScrollers for horizontal and vertical scrolling, integrated EV-DO WWAN for Sprint, WiFi 802.11a/b/g, Bluetooth 2.0 wireless with EDR with A2DP support, USB 2.0 port, 3.5mm audio out jack, line-in port, microphone port, integrated active digitizer with optional digital pen, up to 6 hours of battery life, embedded hardware AES encryption engine, integrated TPM 1.2.

该电脑模型02与超便携移动形式的因素，包含1.2 GHz主频，或1.5 GHz主频的经c7m vla超处理器，并具有30GB或60GB硬盘驱动器休克式与积极的下降检测， 512MB或1GB的DDR2 SDRAM ， 5 800 × 480 ，但本土插值高达1200 x 720户内/户外可读的LCD显示器， HDMI输出连接到HDTV显示器或DVI显示器最多为1920 x 1200 ， VGA输出，通过捆绑的VGA /以太网适配器模拟监视器最多为1920 x 1200 ， displaysense检测和还记得对外显示设置，符合人体工程学拇指键盘与smartlock修改键就人体工学背光键盘，滑鼠按钮和综合的轨道，坚持指向装置，集成电容touchscrollers为水平和垂直滚动，综合的EV - DO ，为Sprint的无线广域网，无线网络的802.11 a /的B /克， Bluetooth 2.0无线与EDR的与您需要的支持， USB 2.0端口， 3.5毫米音频输出端子，线在港口，麦克风端口，集成的数字化仪积极与任择数字笔，最多6小时的电池寿命，嵌入式硬件AES加密引擎集成TPM的1.2。

Inmodel is either a logical vector, whose length is the number of columns in X, or a vector of indices, whose values range from 1 to the number of columns in X, specifying the predictors that are included in the initial model. The default is to include no columns of X.

其中 X 为自变量矩阵， y 为因变量矩阵， inmodel 可以为一个逻辑向量，它的长度为 X 中列向量的个数或者说变量的个数；也可以一个序列向量，它的取值范围为1－ X 中列向量的个数，用来指定模型中的初始变量，默认值是没有选取任何 X 的列向量。

By calculating the sub-cluster parameters and the total antioxidant capability parameter of some kinds of fresh vegetable with diet therapy function, we found that there is clear linear correlation between distribution parameters of biopolymer active center elements (1-x)1/3ln(r1r2/k)、(1-x)1/3ln(k2r1/r2) and antioxidant capability parameter ln[F(1-x)3], and which show monotone decreasing and monotone increasing respectively.

同时对更大范围内的9大类蔬菜和5大类水果的生物高分子活性中心元素分布及其维生素C及维生素E含量进行了考察，结果发现群子统计参数(1-x)1/3ln(r1r2/k)、(1-x)1/3ln(k2r1/r2)与维生素C、E含量参数lnVc(1-x)3、lnVe(1-x)3均分别呈单减和单增的线性关系。

Analysis was done for the parameter selection of Montgomery algorithm in ringF_p /x·p(x. Through suitable algorithm parameter and representation change in ring, wereduce the complexity of multiplication in F_p /x.

分析了一类商环F_p／x·p(x上乘法的快速实现问题，通过选择合适的参数，并基于欧几里德算法改变了商环中元素的表示形式，降低了商环F_p／x·p(x上乘法运算的复杂度。

Find the volume of the solid of revolution of the area bounded by the curves y = tan x, y = 2c os x and x = 0

c 求由曲线 y = tan x、y = 2c os x 及 x = 0 所围成的区域绕 x 轴旋转所得旋转体的体积。

The genotype frequences of X -X - and X +X - did not differ significantly between hyperlipidemic patients and control group. No matter whether it was in the hyperlipidernic or in the control group the plasma cholesterol and triglyceride level showed not much difference...

无论正常血脂组成高血脂组，不同基因型的血浆总胆固醇及甘油三酯水平差别均不显著，高血酯组与正常血酯组相比，X＋X－与X－X－的发生频率差别也无显著性·冠心病患者69例与对照75例的载脂蛋白B基因EcoRI多态性分析显示全部于第29外显子均存在切点，无多态现象

A decrease in Qef value (x = 0 ~ 0.10) with increasing x was dominated by a decrease in the degree of 1:2 order. A increase in relative dielectric constant (x = 0 ~ 0.50) and the positively change of temperature coefficient of resonance frequency (x = 0.10 ~ 0.50) with increasing x were dominated by a decrease in the proportion of [NbO6] octahedra.

扭曲的 [NbO6] 八面体之比率主导本系统之相对介电系数随著 x 的增加而升高以及 x = 0.10 ~ 0.50之共振频率温度系数随著 x 的增加而往正的方向变动的趋势。

The clearance rate of creatinine was calculated by simply formula : [( 140 - age ) x weight ]/[ 72 x Scr ] and [ ( 140 - age) x weight ]/ [ 85 x Scr ] raised by Cockcroft and Gault et al.Statistical analysisAll data were presented as the mean ± SD.

以 Cockcroft和 Gault等提出的简易公式计算肌配清除率（Ccr（1llHmin》：Ccr＝【（140一年龄）X体重」／【72 x血肌研」；Ccr＝I（140一年龄）x体重」／［85 x血肌配」。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。