参数组

We have observed the structure of these dune sands and analyzed the grain-size,surface textural features and several main chemical elements of them,the results showed that:(1) these dune sands have some eolian structure characteristics which are similar to the recent dune sands;(2) they are also similar to the recent dune sands in grain-size components,and parameters of Mz,?滓,Sk and Kg,as well as in several main chemical components;(3) the scatter plots of Mz-?滓,SiO2-Al2O3+TOFE and the probability curves of grain-size showed that these paleo dune sands are different from paleosols and fluvio-lacustrine facies but are consistency with recent dune sands;and(4) the quartz sands have well roundness and some surface textural features such as dish-shape pits,crescent-shape pits,pockmarked pits,upturned cleavage plates,siliceous precipitates and siliceous crevasses,indicating that they had been carried for a long time by the wind.

对这些沙丘砂的沉积构造观察以及粒度、扫描电镜和常量化学元素分析结果表明：(1)这些沙丘砂具有与现代沙丘砂相似的风成沉积构造特征；(2)粒度及其参数--Mz、σ、Sk和Kg，以及主要化学组分SiO2、Al2O3和TOFE也与现代沙丘砂相近；(3)Mz-σ、SiO2-Al2O3+TOFE散点图和概率累积曲线显示这些沙丘砂与萨拉乌苏组中的河湖相、古土壤差别明显，而与现代沙丘砂一致；(4)石英砂颗粒具有良好的磨圆以及碟形坑、新月形坑、麻坑、上翻解理薄片、硅质沉淀和硅质裂纹等表面结构特征，反映其曾受持久的风力搬运作用。

Using linear discriminants,4 types of ECG beats based on MIT/BIH arrhythmia database were classified and the classification performance of the feature sets was evaluated.

心电信号是一个非线性非平稳的复杂信息，能否选择一组合适的特征矢量是精确分类的前提，因而特征参数的选取也一直是个热点问题[1]。

Some new concepts such as the Homogeneous Measure Index and Spatio-temporal Difference Index were proposed to judge the inhomogeneities of the traffic flow, and a set of linear parameters-varying model was used to describe the mechanism of the states transition of traffic flow.

首先提出了同态度量指标、时空差异度指标等概念用于定性判断交通系统的状态，并在此基础上，建立了一组变参数线性方程用以描述交通系统状态转移的正负反馈交互迭代的过程。

METHODS: A single oral dose 600 mg of 2 valaciclovir hydrochloride tablets was given to 18 healthy volunteers in an open randomized crossover study. The concentration of acyclovir in plasma was determined by HPLC at different time points within 14 h following administration. The pharmacokinetic parameters were calculated by BAPP 2.0 software and the bioequivalence was evaluated by two onesided t test and 90%confidence intervals.

采用双周期、单中心、开放、自身交叉对照的研究方法，18例健康志愿者随机分为两组，单次，交叉口服盐酸伐昔洛韦片600 mg后，以HPLC法测定血浆中阿昔洛韦的浓度，采用BAPP2.0软件进行数据处理，计算药代动力学参数。

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。

Application of uniform free resolutions shows what family of polynomials with parametric exponents is good.

一致性自由分解的直接应用表明什么是好的带指数参数的多项式组。

The Simulink emulation model was established based on the six-group delayed neutron point reactor model and the core lumped parameter model with two sections to emulate the dynamic process of marine reactor, and the results were compared with those of related literature.

以6组缓发中子点堆模型和堆芯双区集总参数模型为基础，建立Simulink仿真模型，对船用反应堆动态过程进行仿真分析，并与相关文献作比较。

The Y(4260) and Y(4360) observed by the BaBar collaboration are confirmed, and the resonance parameters improved. Two new resonant structures, the Y(4008) and Y(4660) have been observed for the first time.

证实了BaBar合作组发现的Y(4260)和Y(4360)的存在，并更新了其共振参数，同时发现了Y(4008)和Y(4660)两个共振结构。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。