查询词典 confidence interval

This study consists of three parts. Firstly the equivalently accelerative corrosive environment is determined through the analysis of statistic data of corrosion environment. Secondly the fatigue test is carried out under the constant amplitude cyclic loading for the specimens which are exposed in the corrosive environment for equivalent calendar time of zero year, 3 years, 8 years and 13 years. Four S-N curves with different corrosive time are obtained based on the fatigue experiment. Finally the regression method of S-N curves for experimental data is researched and a weighted least square fit is put forward in which the weigh of a group of test data is inversely proportional to the length of the confidence interval.

进行了以下几个方面的工作：(1)通过实测、统计、分析得到了当量加速环境谱；(2)完成了在当量加速环境谱下预腐蚀日历年限0年、3年、8年和13年的腐蚀试验，并进行了成组常幅疲劳试验，得到了不同预腐蚀年限下的S-N曲线；(3)进行预腐蚀后的S-N曲线的数据拟合方法的研究，提出了考虑置信区间长度影响的加权最小二乘法。

As the upper bound of the 90 percent confidence interval for RMSEA was 0.37 and the lower bound was 0.03, the degree of approximation for the comprehensive model in the population was acceptable.

对于初中学生学习有望模式与高小学生学习有望模式，χ〓差别测验显示两个模式的差别是显著的(Δχ〓=34.436；Δdf=13；p＜0.05)，这个结果表示初中学生与高小学生有著不同的学习有望模式。

Fisher's exact test and odds ratio with its 95% confidence interval were used to analyze the relationship of pulmonary artery to lesion with the possibility of malignancy. The degree of pulmonary arterial encasement in the benign lesion and malignancy was evaluated by Wilcoxon rank sum test. The agreement between 2 observers was evaluated by kappa statistics. In addition, the sensitivity and specificity profiles of the degree of encasement in diagnosis of malignancy were determined by plotting an empirical ROC curve.

肺部病灶及其邻近肺动脉之关系来预估恶性的可能的资料分析方法为费氏分析检定法(Fisher's exact test)，胜算比以及95%信赖区间；评估肺动脉被包埋压迫的程度用在预估恶性肿瘤之能力是使用威尔科克逊秩和检定；2位观察者间的同意度之检定是用Kappa 统计分析；除此之外，用肺动脉被包埋压迫的程度来预估恶性肿瘤之能力的敏感度以及特异性是用接受者操作特徵的曲线来评估。

Choosing reliability simulation data as a sample, the parameter confidence interval as coding space and the reciprocal of errors between empirical distribution function and acquired distribution function as a fitness function, the point estimation model of age distribution is established based on the genetic algorithm, and the reliability function of complex systems is acquired.

以可靠性仿真数据为寿命样本，待估计参数的置信区间为编码空间，以经验分布与所求分布误差倒数为适应度函数，建立了基于遗传算法的寿命分布参数点估计模型，求得了复杂系统可靠度函数。

In adjusted models, NRG-1β was independently associated with an increased risk of death or cardiac transplantation over a median follow-up of 2.4 years (adjusted hazard ratio, 1.58; 95% confidence interval, 1.04 to 2.39; P=0.03 comparing fourth versus first NRG-1β quartile).

在校正的模型中，NRG-1β与死亡风险增加或心脏移植独立相关（平均随访2.4年，NRG-1β第四分位数与第一分位数相比，校正的风险比为1.58；95% CI，1.04~2.39；P=0.03）。

This paper advances that Bayesian methods can be used to analyze small sample or single replication simulation output data, and presents some Bayesian methods and estimating method of confidence interval of Gamma distribution.

提出用Bayes方法对小样本或单次运行的仿真输出进行分析，给出了几种条件下的Bayes方法和伽玛分布置信区间的估计方法，提出了Bayes方法中先验分布的确定方法和准则。

Sensitive range from 49.1% to 100%, specificity range from 18.2% to 90%,accurate range from 45.5% to 88.3%, PPV range from 34.1% to 95.2,NPV range from 22.2% to 100%,the combine sensitive was 82.7%,specificity was 63.3%;there were not obvious publish bias in the 9 articles, and there was heterology of the 9 articles, the forest figure show RR was 2.34[1.43,3.05],and its 95% confidence interval did not include 1,the chance of malignancy nodules'SUV above 2.5 were more than benign nodules.

文献报道的敏感性49.1-100%，特异性18.2-90.0%，准确性45.5-88.3%，阳性预测值34.1-95.2%，阴性预测值22.2-100%，Meta分析合并后的敏感性82.7%，特异性为63.3%，准确性为71.8%，阳性预测值80.8%，阴性预测值57.0%；漏斗图成近似倒三角形，认为文献无明显发表偏移；对文献异质性检验，P小于0.05，认为文献来源存在异质性；选用随机效应模式得到森林图，RR为2.34[1.43，3.05]，其95%的可信区间不包括1，认为肿瘤病人最大SUV 2.5法呈阳性的可能性大于非肿瘤病人，二者之间具有统计学差异；两篇来源于日本的文献显示日本国的18F-FDG PET肺占位显像假阴性率高于我国。

Bayes statistics is applied to confidence interval estimation for parameters of J-M model.

目前，国内外关于软件可靠性模型参数的点估计方法的研究已较为深入[1，2]。

The performances of the confidence interval estimation are also studied numerically via Monte Carlo simulation in terms of coverage probability.

除了以实际例子说明建议的区间估计方法外，藉由蒙地卡罗模拟分析，建议的区间方法在覆盖机率上也得到不错的结果。

Incremental cost-effectiveness ratio statistics can cause biases for traditional statistical methods of confidence interval estimation.

传统的统计学方法计算率的可信区间会带来偏倚。

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。