查询词典 reliability coefficient

The paper is based on the rupture-dynamical theory and DNV RP-F101 recommendatory method, through the study of three corrosion models, we have built up rational estimation model, adopted subentry safety coefficient method and allowed stress method to estimate the remaining strength of corrodent pipelines, and finally, introduced the Genetic Algorithms method to compute the reliability of corrodent pipelines, gaining the reliability index, and provided corresponding program.

本文以断裂力学理论为基础，以 DNV RP-F101 腐蚀管道评估的推荐作法为蓝本，通过对管道腐蚀损伤的三种腐蚀形式具体研究，建立了合理的评估计算模型，采用了分项安全系数法和许用应力法对腐蚀管道的剩余强度进行了失效压力的计算，最后较详细的介绍了遗传算法的基本理论，并把它应用到对腐蚀管道的进行可靠性评估中，得出其可靠性指标，并给出了相应的计算程序。

According to actual condition, a model of wall thickness of rotary kiln is established. The constant coefficients in the model, including thermal conductivity, heat transfer coefficient, Fourier coefficient and contact resistance, are closely calculated. A formula of contact resistance is draw from a great deal of data of surface and inner temperature of rotary kiln. The wall thickness of rotary kiln is simulated by MATLAB. The simulation result is transmitted from MATLAB to DELPHI through a group of interface functions compiled by VC++. The basic graphs-circle and line are analyzed by the means of the technique of Visualization in Scientific Computing and the Bresenham arithmetic, and are realized the visualization of the wall thickness. The contents of communication between master computer and slaver computer are designed and the error control technique, the idea of multi-thread and the embedded assembly language are applied to realize the temperature data transmission and graph transmission, which largely improved the speed of transmission and the reliability and stability of system.

建立了符合现场实际的回转窑壁厚数学模型；结合现场采用红外测温仪测量所得的温度数据和回转窑的实际结构数据，确定出适合该模型的定常系数(包括导热系数、换热系数、傅立叶系数、接触热阻等)，并得出与回转窑工况的相近的接触热阻公式ln=T~(0.5154)-36.7868；利用MATLAB软件仿真出回转窑壁厚，并将运算结果通过在VC++的编译环境下编译出MATLAB和DELPHI的接口函数传输到该监测系统中，实现了温度数据的转换和交换；运用科学计算可视化技术和Bresenham扫描转换算法对基本图形——圆和直线进行分析，从而实现了仿真后的壁厚数据可视化；在研究异步串行通信方式的基础上，设计了该系统上下位机功能和通信内容，并运用差错控制技术、多线程思想以及嵌入式汇编语言实现了温度数据和图形数据在上下位机之间的远程传输，提高了数据传输的速率和系统的可靠性、稳定性。

RESULTS: Reliability of RNADL, intra-rater and inter-rater, was good;each interclass coefficient correlation was within 0. 966 -0. 998, r= 0. 996 - 0. 997; The index of intra-rater agreement α= 0. 822; and that of inter-rater reliability α= 0. 925, RNADL internal concordance was good.

结果：RNADL评测者内部和评测者之间的信度良好，各项组内相关系数范围为0.966～0.998，r=0.996～0.997；内部一致性信度系数α=0.822，各项之间α=0.925，RNADL内部一致性较好。

In order to determine the convergence of the line samplingbased reliability sensitivity method,the variance and the variation coefficient were derived for the reliability sensitivity estimation based on the line sampling.

为判别线抽样可靠性灵敏度分析的收敛性，推导了线抽样可靠性灵敏度估计量的方差和变异系数的计算公式，近似计算了线抽样可靠性灵敏度在给定置信度下的置信区间。

In order to determine the convergence of the line sampling -based reliability sensitivity method,the variance and the variation coefficient were derived for the reliability sensitivity estimation based on the line sampling .

为判别线抽样可靠性灵敏度分析的收敛性，推导了线抽样可靠性灵敏度估计量的方差和变异系数的计算公式，近似计算了线抽样可靠性灵敏度在给定置信度下的置信区间。

At the same time it is shown the population dissociation coefficient method is abetter calculating method for structural reliability in solid rocket motors and themajor factor affecting structural strength reliability is the standard deviation.

在置信度为0.90时，其结构可靠度大于0.9954。同时表明总体变异系数法是较佳方法，影响结构可靠性的主要因素是样本标准差。

The factors that influence the reliability index of retaining wall, such as base friction coefficient and inclined base, are discussed. The objective reliability index of anti-slide , anti-overturning of retaining wall and stability of bearing capacity of foundation soil have been obtained.

对按现行设计方法设计的重力式挡土墙的抗滑动和抗倾覆稳定性以及基底承载力的可靠指标进行了系统的计算和分析，并对影响可靠指标的因素进行了探讨。

Mental self-supporting of university students was a multi-level and multi-dimensional model. It included tow levels: the core trait and the basic trait. The core trait included autonomy , self-control ?sociality. The basic trait included self-conviction, self taking responsibility, goal management , self-solace % opening and containingx self-cognition and self-decide. 2 . Test-retest reliability , split-half reliability , internal concordance coefficient,content validity, construct validity and index validity of the mental self-supporting questionnaire of university students were good. This questionnaire could be used to test the mental self-supporting of university students.

有关研究结果如下：(1)大学生心理自立是一个多层次多维度的心理结构，可以划分为&核心特质&、&基本特质&两个层次，核心特质层次包含&自主性&、&自控—社会性&两个维度，基本特质层次包括&自我坚信&、&自我负责&、&目标管理&、&自我抚慰&、&开放包容&、&自我认识&、&自我做主&七个维度，(2)根据大学生心理自立结构的理论构想编制的《大学生心理自立问卷》的重测信度、折半信度、内部一致性信度、内容效度、构念效度、效标效度等信效度指标均较佳，该问卷可以作为评价大学生心理自立的适宜工具。

For reliability, results showed appropriate internal consistency coefficient and composite reliability.

在信度分析方面，内部一致性系数及组合信度亦属良好。

The methodology proposed in the paper was illustrated by an example, from which the information of the maximum error of the reliability analysis caused by the correlation coefficients and the effect of the correlation coefficient on the reliability analysis was obtained.

实例计算以及编写的相应分析程序获得基本随机变量间相关系数引起的最大可靠性分析误差、对结构可靠性的影响程度等信息，说明了本文的方法在工程实际中的应用。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。