This article summarizes the accuracy and coverage evaluation survey (A. C. E. survey) of the American census 2000. It includes sampling design, post-stratification, dual-system estimation and so on.
本文概要地叙述了美国2000年人口普查后所进行的准确性和数字评估调查（A.C.E。调查）。它包括：抽样设计、事后分层、双系统估计等等。
In other words, your estimation should be based on transactions being "round trips," not system steps.
换句话说，您的估算应该基于“环形的”事务，而不是系统步骤。
Furthermore, because of software's inherent flexibility, we can build a system in almost any way we like, using whatever means we like, further exacerbating the problems of accurate estimation.
此外，由于软件自身固有的灵活性，我们能够随心所欲的建造系统，这就进一步增加了精确评估问题的困难程度。
Channel estimation is the key technique to implement OFDM system, and is also the hotspot of research.
信道估计是实现OFDM系统的关键技术之一，也是目前研究热点。
The space-time channel estimation and multiuser detection algorithm for the uplink of multicarrier CDMA (MC-CDMA) system in frequency selective Rayleigh fading channel were investigated.
研究了频率选择性瑞利衰落信道中的同步MC-CDMA系统上行链路空时信道估计及多用户检测算法。
Power system state estimation is the core of electric energy management system and the bases of dispatch, control, security evaluation and so on.
电力系统状态估计是电力系统调度、控制、安全评估等方面的基础，也是电能管理系统的核心组成部分。
The method of state estimation is discussed, when radars have different observation dimension in one distributed data fusion system with feedback.
论述了带反馈分布式信息融合系统中传感器观测维数不同时的状态估计方法。
Empirical estimation of cost functions requires statistical techniques which relate the cost of constructing or operating a facility to a few important characteristics or attributes of the system.
利用基于经验的成本函数估算成本需要一些统计技术，这些技术将建造或运营某设施与系统的一些重要特征或属性联系起来。
The parameter estimation and system identification of nonlinear structures is a subject which serves to obtain and verify mathematical model of nonlinear structures.
非线性结构的参数估计和系统识别是取得和验证非线性结构数学模型的一门学科。
To improve system performance, there are many key technologies need to be solved or improved in OFDM and SC-FDE systems, where channel estimation is one of them.
为了进一步提高系统性能，OFDM和SC -FDE系统都还有很多关键技术需要进一步的解决和完善，信道估计就是其中之一。
The experiment result indicated that the system improved the ranging precision, at the same time got more accurate estimation of the distance.
实验结果表明，系统提高了整体测距精度，得到了被测距离更加准确的估计。
A high precision and high performance servo-drive system needs a rotating speed estimation algorithm which has high accuracy, fast response and high resolution in a wide range.
高精度高性能的伺服驱动系统需要在宽范围内有精度高、响应快及分辩率高的转速估计算法。
Last, MATLAB6.1 as simulation tool is used to make research for the whole SRD system and operating characteristics and rotor position Angle estimation.
最后采用MATLAB6.1软件作为仿真工具，对SRD系统以及SR电机的控制特性和转子位置估算方法进行了仿真研究。
A careful selection of the best measured FRFs will generally produce much better global poles of the system for the modal parameter estimation process.
在模态参数估计过程中，仔细选择最好的测量频响通常会得到更好的系统全局极点。
Specially, by use of this method, we can give high precision estimation of system error only using the tracking data of a set of MISTRAM.
运用该方法，只要一套MISTRAM系统的跟踪数据，就能给出自由飞行段常值系统误差的估计。
The navigation subsystem of the mobile robot fuses the position estimation obtained by a vision system with the position estimated by odometry using a Kalman filter.
移动机器人的导航子系统利用卡尔曼滤波器，融合由视觉系统与由里程计获得的位置估计值。
The design of controller is based directly on pseudo- partial-derivatives (PPD) derived on-line from the input and output information of the system using a novel parameter estimation algorithm.
控制器的设计是直接基于称为伪偏导数的向量，伪偏导数是通过新型参数估计算法，根据给出的永磁直流直线电机非线性系统模型的输入输出信息在线导出的。
Moreover, based on this modified fuzzy system, the paper presents an on line identifying algorithm with which the on line parameter estimation of nonlinear system is realized.
在被调整模糊系统基础上，提出了一种非线性系统在线估计参数的在线辨识算法。
System error estimation for active radar and passive radar is the key for realizing high precision Information fusion of passive radar and active radar.
有源雷达和无源雷达系统误差估计是实现有源无源雷达信息高精度融合的关键环节之一。
There are four key issues in the system, that is communication carriers, source coding, designation of virtual keyboard, and the single-trial estimation of its message carriers.
在这个系统中，通信载体、信源编码、虚拟键盘的设计和脑-机接口信号的单次提取是四个最核心的问题。
The operator was applied to simulating parameter estimation of nonlinear system, and the resulted showed its validity and its superiority over a general crossover operator.
通过应用于非线性参数估计的仿真计算，表明了这种杂交算子的有效性及其相对于普通杂交算子的优点。
In a speed sensorless vector control system, the precision of speed estimation is relied on the precision of motor parameter.
在无速度传感器矢量控制系统中，转速估算的精度在很大程度上依赖于电机参数。
The Successive Orthogonalization Decentralized Kalman Filter (SODKF ) is a new method which is used for large system state estimation.
逐次正交化分布式卡尔曼滤波器是对大系统进行状态估计的一种新方法。
While only continuous signals are utilized in traditional system states estimation approach, information contained in discrete measurements is ignored.
传统的系统状态估计方法只用到连续信号，而离散测量信号所包含的信息没有得到利用。
The application of system transfer function in measuring night airglow, the temperature shift and the error estimation of the system are also briefly discussed.
另外对系统传输函数在实际气辉测量中的应用、系统的温度漂移以及误差估计也进行了简要讨论。
A new observability analysis algorithm for power system state estimation based on reduced network Jacobian matrix is proposed.
提出了一种新的基于降阶网络雅可比矩阵的电力系统状态估计可观测性分析方法。
This article mainly introduces the establishment and structure of physical property estimation system for organic compound.
主要介绍了有机化合物物性估算系统软件的建立及其结构。
This article mainly introduces the establishment and structure of physical property estimation system for organic compound.
主要介绍了有机化合物物性估算系统软件的建立及其结构。
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