通常，数据库问题可能是指由数据库导致的任何瓶颈问题，包括SQL查询、数据库优化参数、索引问题和数据分布问题。
Generally, database problems can refer to any bottleneck due to database, including SQL queries, database tuning parameters, indexing issues, and data distribution problems.
针对上述问题，本文首先通过传输线理论建立了机车用电缆的分布参数模型，以及变频调速牵引电机的高频等效电路。
In allusion to the problems mentioned above, firstly, the paper models the distribution parameter circuit of the cable and the high frequency circuit of motor through the transmission theory.
对于功能函数中含有模糊分布参数(FDP)的随机变量问题，如何准确且简便地评估其可靠性，是十分重要的。
For a problem with performance functions which include random variables with fuzzy distribution parameters (FDP), it is important to evaluate their reliability accurately and rapidly.
对于残缺的样本观测数据，讨论了正态分布总体尺度参数的区间估计问题。
A question of formation confidence interval for scale parameter of normal distribution from incomplete observational data is discussed.
本文分析总结了现有的国内外故障定位的理论与技术以及存在的问题，并在此基础上提出了基于分布参数的牵引网故障测距原理。
Based on the comprehensive analysis of the application status and the existed problem of traction line fault location, the thesis present a new fault locator principle based on distributed parameter.
考虑用二阶复合型偏微分方程所描述的分布参数系统，研究了它的一个使平方性能指标达到最小值的边界最优控制问题。
Consider the distributed parameter system described by the second order partial differential equation of composed type, we discuss its a boundary optimal control problem with quadratic performance.
最后讨论了如何选择联合验前分布中的参数的问题，并给出了趋势检验方法。
At last, the problem of how to select the parameters of joint prior distribution is discussed and the trend testing approaches are given.
它有助于实现可渗透管网络跨壁传输问题分布参数模型的大规模数值计算。
It is helpful in the computation of large scale mathematical model with distributed parameters in concern with transport problems across the wall of the network of permeable tubes.
对一般线性回归模型中有关参数估计分布的模拟问题，给出一种随机加权逼近的再构造方法。
A reconstructing method for random weighting approximations is proposed in approach to the distributions of the parameter estimates in general linear regression model.
采用零截尾计数模型分析，不仅可以解决零截尾计数分布问题，且参数估计结果更准确，拟合效果更合理。
Zero-truncated count model could not only solve the issue of zero-truncated count distribution, but also the parameter estimates were more accurate, the fitting results were more reasonable.
讨论了随机参数服从非正态分布前轴的可靠性优化设计问题。
This paper examines the reliability optimization design for front-axle with non-normal distribution parameters.
本文研究了一类多时滞分布参数系统的变结构控制问题，通过非奇线性变换建立了系统的滑动模运动方程，并分析了它的稳定性。
The variable structure control problems for a class of distributed parameter systems with several delays are investigated. The sliding mode equation is established and its stability is discussed.
讨论了随机参数服从任意分布时拉杆的可靠性优化设计问题。
Optimization design of drag rod reliability with random distributed parameters is discussed.
第二章，研究了一类不确定分布参数系统的变结构控制问题。
In the second chapter, the variable structure control problem of a class of uncertain distributed parameter system is studied.
论述了广义分布参数系统产生的历史背景，讨论了该领域研究的主要问题的进展状况，提出了一些有待继续研究的问题。
The background of generalized distributed parameter system and the research status for generalized distributed parameter system are discussed, and put forward some problems need to be researched.
物性参数的分布一直是油藏描述的关键问题和难点。
Distribution of reservoir physical parameter is always the bottleneck problem and difficulty of reservoir description.
由于分布参数随机系统控制问题比较复杂，目前，这类系统还没有被深入研究。
As the control problems of the stochastic systems with distributed parameters are more difficult, these systems have not been studied still in a deepgoing way by now.
在研究测量误差分析、模型误差统计检验、变形分析、可靠性分析和优化设计等问题中，经常需要对统计量分布的非中心参数进行估计。
The noncentral parameter of statistic distribution often needs to be estimated in error analysis, statistical test, deformational analysis, reliability analysis, and optimum design, etc.
这对研究广义分布参数系统的状态反馈稳定性问题具有重要的理论价值。
This research is theoretical important for studying the stabilization by state feedback of the singular distributed parameter systems.
广义分布参数系统是比分布参数系统更广的一类系统，在研究复合材料热导体中的温度分布等问题时会出现这样的系统。
Singular distributed parameter systems is a system which is broader than distributed parameter systems, it appears in the study of the temperature distribution in a composite heat conductor, etc.
针对分布参数滤波网络存在寄生通带问题，本文提出一种新的微带带通滤波电路。
In view of parasitic passband in the filtering networks composed of distributed elements, a novel circuit of microstrip bandpass filters is presented in this paper.
通过应用极大似然估计方法，解决了产品寿命和维修时间分布中未知参数估计的问题。
By using the maximum likelihood estimation method, the unknown parameters in the lifetime and repair time distribution are solved.
首先，我们确证了全同感测器系统在指数分布族的参数辨识问题上的最佳性。
Firstly, the optimality of identical sensor system for the exponential distribution family has been verified.
研究广义分布参数扰动系统的变结构及其一致收敛问题。
The variable structure control problem of singular distributed parameter system is studied and uniformly convergence is considered.
算法采用分布参数线路模型，利用了双端数据和六序分量法，并考虑了对不准确线路参数识别的问题。
The algorithm adopts the line' s model of distributing parameter, uses two-end data and six-order component and considers the problem to identifying inaccurate parameter.
应用分布参数系统最优化控制理论，对此最优化问题进行了分析求解。
This optimization problem is analyzed with the optimal control theory of separated parameter system.
研究广义分布参数系统的控制综合问题，给出了直接控制形式和分布控制形式的变结构控制设计的方法，并结合例子说明了控制的设计过程。
This paper considers the synthesis problem of control of singular distributed parameter systems, the design methods of variable structure control for direct control or distributed control are given.
应用分布参数理论，研究直流架线电网漏电保护问题，建立了架线电网的数学模型。
Distribution parameter theory is applied to study earth leakage protection of DC trolley network and a mathematic model of trolley network is established.
该文考虑了混合分布为三参数伽玛分布时的参数估计以及位置参数的检验问题。
In this paper, the research on the parameter estimation of Gamma distribution with three parameters and the test of the location parameters has been made.
该文考虑了混合分布为三参数伽玛分布时的参数估计以及位置参数的检验问题。
In this paper, the research on the parameter estimation of Gamma distribution with three parameters and the test of the location parameters has been made.
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