随机

METHODS: An open, randomized, twoperiod crossover study was conducted in 18 healthy volunteers. Concentrations of gatifloxacin in plasma were assayed by HPLC after a single oral dose of 400 mg of the tested capsules or the referenced tablets. The main pharmacokinetic parameters ［AUC（0-24h）, Cmax and Tmax］ were analyzed by two onesided t test. RESULTS: The concentrationtime curve after medication conformed to onecompartment open model with a first order absorption.

采用双周期随机交叉、自身对照试验设计法，将18例男性健康志愿者随机分为两组，分别单剂量口服甲磺酸加替沙星胶囊400 mg和甲磺酸加替沙星片400 mg，经1 w清洗期后交叉换药，以高效液相色谱法测定受试者服药后血浆中加替沙星的经时浓度，计算加替沙星药动学参数，以双单侧t检验统计法比较两种甲磺酸加替沙星制剂是否具有生物等效性。

In a randomized,placebo-controlled study, 30 pediatric patients undergoing openheart surgery were randomly assigned to one of two equal groups.

在一项随机安慰剂对照的研究中，将30个行开心手术的患儿随机平分到两组中。

Patients were randomly assigned by a computer-generated randomisation scheme to receive oral dimebon, 20 mg three times a day (60 mg/day [n=89]), or matched placebo (n=94). Other antidementia drugs were not allowed.

根据计算机生成的随机方案，随机分配患者接受口服dimebon 20 mg，3次/d（60 mg/d，n＝89）或匹配的安慰剂（n＝94），不允许服用其他抗痴呆药物。

Methods: After a 3-week run-in period, 5926 patients, many of whom were receiving concomitant proven therapies, were randomised to receive telmisartan 80 mg/day (n=2954) or placebo (n=2972) by use of a central automated randomisation system.

在3周的导入期后，5926例患者（多数患者同时接受标准治疗）通过中心自动随机化系统随机接受替米沙坦80mg/天（n＝2954）或安慰剂（n＝2972）治疗。

Objective:To explore the clinical effects of early postoperative intestinal nutrition with Selfcontrol Non-elemental Diet for patients with esophageal cancer .

方法选择120例食管癌手术病人随机分为自制非要素膳组和商品化组各60例，同时随机抽取以前的38例肠外营养组，分析比较三组术后的营养指标及住院费用，进行统计学处理，了解其效果。

The coverage properties of them were analyzed based on the spatial tessellations theory.In addition,since previous works on random structured wireless networks...

同时，针对现有随机结构无线网络中相变现象的分析工具复杂的问题，采用箱覆盖技术推导了随机结构三维传感器网络的临界覆盖半径。

Two-dimensional percolation lattices are used to describe urban wireless propagation environment, and random walks are employed to model radio wave propagation. The probability that a generic ray undergoes certain number of collisions at specific spatial location is derived from the Bernoulli equiprobable experiments and the maximum entropy principle.

使用二维渗流网格描述城市无线传播环境，使用随机游动过程对在该环境中传播的无线电波进行建模，在此基础上分别使用Bernoulli等概率试验和最大熵原理方法计算随机射线在传播空间的概率分布。

The present paper outlines this theory and method,especially the Hamiltonian theoretical framework of nonlinear stochastic dynamics and control proposed and developed by the present auth...

本文概述该理论方法，特别是作者提出与发展的非线性随机动力学与控制的Hamilton理论体系框架。最后建议各领域随机动力学与控制研究者进行跨学科的合作研究。

Especially, the size and volume of sand-mound has constant variation at under the 100 m scale in the alluvial fan, and has random spatial pattern without law.

湖盆低地由自相关因素引起的沙堆大小和积沙体积空间异质性占主要部分，分别体现在1.2～84 m和1.2～505 m尺度；而山前冲积扇的随机因素引起的沙堆大小和积沙体积空间异质性占到100％，在100 m以下尺度该区白刺灌丛沙堆大小和积沙体积具有恒定的变异，其空间分布格局在这个尺度无规律体现呈随机分布。

Due to spatial variability of material property, Young\'s modulus is assumed to be a stochastic process.

考虑随机因素的有限元称为随机有限元。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。