查询词典 sampling methods

Research interests encompass sampling, estimation, semi/non-parametric methods, multivariate statistics, data mining and complex data analysis.

研究兴趣包括采样，估计，半/非参数方法，多元统计，数据挖掘和分析复杂的数据。

METHODS: By cluster sampling, 214 cadets from a military academy were investigated with Modified Big Five Personality Scale and selfdesigned decisionmaking scale. The cadets were randomly divided into 2 groups. After noneffective questionnaires were eliminated, the first group (n=110) were in a positive framing and the second group (n=104) in a negative framing. A chisquare test was used to analyze the results of program chosen and t test was used to determine the relationship between personality dimension and risky choice.

采用自编决策问题问卷和大五人格量表中国修订版，以整群抽样的方法，抽取某军校大学生220人为研究对象，随机分为两组，剔除无效问卷后，正面框架组(n=110)，负面框架组(n=104)，对两组间被试的方案选择进行χ2检验，方案选择与人格特征的关系进行t检验。

Methods Get the norm of solution vector to the equivalent integral equation using numerical calculation in every sampling point at imaging region,and represent the norm with gray to reconstruct the scattering shape.

方法通过数值计算，求解等效积分方程，获取解向量在成像区域内每一采样点的范数，利用灰度表示其范数，重构散射体形状。

Adopting peak detection, AGC based on receiving duty cycle and multi-phase synchronization, the method can be an optional scheme for lowering sampling rate and system realization cost.engineering methods of IR-UWB wireless systems which focus on the RF front-end of the transceiver are studied by theoretical analysis and experimental verification.

文中还给出了综合这些方法时在室内多径信号下接收性能的仿真结果，仿真表明这种方法在室内环境下可以可靠工作在数兆到数十兆的传输速率上。

Methods The osmolality of sodium hyaluronate gels with sodium hyaluronate concentration of 0.5%, 1.0% and 2.3% respectively were determined by VAPRO 5520 pressure osmometry. The sampling system with pipette or weighing method was compared.

用VAPRO 5520渗透压仪分别测定0.5%，1.0%和2.3%透明质酸钠凝胶渗透压；比较0.5%透明质酸钠凝胶称量加样与取样器加样的测定结果。

Methods: A recently deeloped method of sampling perilymph from the cochlear apex of guinea pigs was used in which the samples represent fluid originating from different regions along the scala tympani.

一种最近发展的从豚鼠耳蜗顶部进行外淋巴液采样的方法被应用于该项研究，采取这种方法可以获得代表沿着鼓阶不同区域产生的液体的样本。

The instrument simultaneously sample for three phase voltage and current. Rotary photoelectric coding switch and LCD are used for human-computer interaction. it makes the interface compact and efficient. Utilizing the function of positive and negative edge trigger of the programmable counter array unit in MPU, signal zero-cross is captured for the phase detected based on double way. The software synchronism sampling method based on real-time parameter self-optimizing minishes period truncation error, and the measurement accuracy is improved. The digitization power measure imports traditional two-unit and three-unit methods and expands application range of the instrument. The capacity is discriminated by soft ware table-look-up on the load loss. The value of a quantity is converted to the value when reference temperature (75 ℃) from test temperature.

该仪器具有以下特点：仪器对三相电压电流同时采样；基于旋转式光电编码器和液晶显示屏的人机交互界面简洁而高效；可编程计数器阵列PCA"捕获"信号的过零点用于双向过零平均鉴相，得到准确的相位差和周期；基于实时参数自寻优的软件同步采样，有效地减小了周期截断误差，提高了测量准确度；数字化功率测量引入了传统的二表法和三表法，扩展了仪器的使用范围；实际容量根据负载损耗用软件查表的方法来判别；测量值已从试验温度折算到了参考温度(75℃)时的值。

Within methods of this class, tracking is solved by sequential building posterior probability distribution of target state, and sampling based Monte Carlo computing acts as one of the key technologies.

这类方法通过序贯构造目标状态的后验概率分布来求解跟踪问题，而基于抽样的蒙特卡罗计算方法则是其中关键的统计计算技术。

Methods A Probability Proportionate to Size Sampling was used, and 7913 female sex workers were visited to fill in a questionnaire.

采用按规模大小成比例的概率抽样方法对7913例暗娼进行问卷调查。

Methods According to the classification of east, middle and west areas in China, as well as urban and rural, the multi-stage cluster probability sampling was used to select randomly total 17607 children under 5 years, whose weight and height were measured in standard method.

方法采用多阶段分层整群随机抽样的方法，按照东、中、西三类地区和城市、农村的分层原则，在全国选取17607名5岁以下儿童，测量儿童的身高和体重。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。