Then a smart threshold is obtained from the minimum mean of different segments of background noise and used to detect the meteor trail echo. 再根据流星干扰的分布特点分段计算背景噪声均值,求取流星干扰检测门限;
Segmentation results were obtained by mean shift filtering and merging regions. 最后,进行区域合并得到分割结果。
Firstly, after the route with minimal perceived impedance is obtained with mean area method, a choice set of paths is produced by dominance check. 首先采用均值面积度量法度量路径的感知阻抗找到具有最小感知阻抗的路径,并通过优势检测产生出行者备选路径集合;
Experimental results show that a maximum etching rate of about 194 nm/ min can be obtained, the root mean square ( RMS) of roughness and the Cl/ Si atom ratio on the etched surface are 1.237 nm and 0.97% ∶ 99.3%, respectively. 得到的最大蚀速率为194nm/min,表面均方根粗糙度为1.237nm,Cl/Si原子浓度比约为0.97%∶99.3%。
The error equations of modulus, strain and damping ratio are obtained by the root mean square method. The affecting factors and affecting degree of error are analyzed. 提出了固定-自由型共振柱仪剪切模量、应变和阻尼比误差的分析公式,得到了关于几种主要控制因素和其影响程度的新认识,并用于指导试验和分析工作。
Combined estimation of time-delay between two channels is obtained with a minimum mean square error criterion by using similarity of the signals. 提出依据最小均方误差准则,利用波形相似性来联合估计两个信道的时延差值。
On the basis of reference~(), the calculated scheme of soil moisture flux presented by Giorgi ( 1996) is further spread to be the simplified form of asymmetrical distribution, so as to obtained the mean flux of heterogeneous surface region. 在文献[1]的基础上,将Giorgi(1996)提出的通量计算方案进一步推广为非对称分布的简化形式,求得非均匀地表区域平均通量。
Variance and coefficient of variation were calculated for quadrantic retinal nerve fiber layer obtained from the mean image. 计算3天中全周平均及各象限视网膜神经纤维层厚度的标准差及变异系数。
Result: The model of the framework and obturator metal based were obtained. The mean retentive force was 47N. 结果:获得了所设计的附着体支架及赝复体金属基托的实物模型,平均固位力达47N。
A good CT staging diagnosis was obtained in the mean time. CT同时提供了较好的肿瘤分期诊断。
In this paper, fixed point theorems are obtained for mean nonexpansive mappings on star-shaped subsets of a convex met-ric space. Our results improve and generalize Fu Junyi's results on convex subsets of Banach space. 本文获得了关于凸距离空间内星形子集的平均非扩张映射的几个不动点定理,这些结果改进和推广了傅俊义关于Banach空间内凸子集的一些结果。
Whereas those large coefficients are modeled as zero-mean Gaussian random variables with high local correlation and the estimation are obtained by Minimum Mean Squared Error criterion. 对小系数直接置零,对大系数则采用一种具有局部空间强相关性的零均值高斯模型,通过最小均方误差准则得到其估计。
Meanwhile the vortex shift waveform is obtained from the estimated mean frequency waveform using a suitable low-pass filter. Then the vortex shedding frequency and amplitude can be calculated. 用合适的滤波器可以从估计出的平均频率曲线中得到涡流的波形,并且计算表征涡流的涡流经过频率和幅度特征参数。
Based on the circular sample window method theory, the trace midpoint density of joint is obtained to estimate the mean trace length. 利用圆形窗口法原理,在估计节理迹线平均长度的同时计算出节理迹线中点面密度。
Firstly, an accurate distribution of the magnetic field on rotor cross section is obtained by mean of FEM. Secondly, magnetic stress distribution on air/ core interfaces is obtained via a new formula considering the saturation effect, based on Maxwell Stress Method. 首先通过有限元计算得到转子横截面上磁场的精确分布,进而基于麦克斯韦应力方法,采用考虑饱和等多种因素影响的一个新的公式,获得了空气/铁心界面上的磁应力分布。
The higher dimensional generalization of Jensen 'inequality is established, As by-products, a series of different function inequalities on m-dimensional space are obtained which extend the A-G mean inequality and Cauchy's inequality. 将琴生(Jensen)不等式作了高维推广,并由它得到了m维空间的一系列不同类型的函数不等式,它们是算术&几何平均值不等式、柯西不等式的联合推广。
Results In all 7 patients cardioversion of atrial fibrillation to sinus rhythm was successfully obtained. A mean of 2 ± 1 shocks per patient has been delivered with a total amount of 13 shocks. The average delivered energy was 7.8 ± 2.2 Joules. 结果所有患者经低能量体内电转复后均恢复为窦性心律,共除颤13次(平均2次/例),能量为(7.8±2.2)焦耳。
Results showed that in the sequences obtained, mean A+ T content was about 78.6% and 7 nucleotide sites were substituted. 结果表明,在用于分析的447bp序列中,A+T平均含量为78.6%,其中7个位点存在变异。
An equation of state ( EOS) applicable to both the uniform and non-uniform fluid was established using the second-order perturbation theory, the Duh-Mier-Y-Teran EOS and the direct correlation function obtained by mean spherical approximation ( MSA). 应用二阶微扰理论,Duh-Mier-Y-Teran状态方程和在平均球近似(meansphericalapproximation,MSA)的基础上获得的直接相关函数,建立了适用于均匀流体和非均匀流体的状态方程。
Comparing the lunar speed data of the 6 calendars with the modern data, we obtained that the mean square deviation is about 0.4 ancient degree of China. 利用这两类数据与现代月亮日行数据比较,其均方偏离也只有0.4古度左右。
By decomposing the distribution function f lattice gauge system into the product of single link distribution functions, we obtained a mean field solution to the Fokker-Planck equation in Lattice Gauge Theories. 将格点规范理论中的演化分布函数逐步地分解为单链变量分布函数的乘积,我们得到了Fokker-Planck方程的平均场近似解。
By introducing the rectangular wave packet, we have obtained the mean expectation values of the coordinates, momenta, and the square of these operators. 论文中引入了一种特殊的经典波包&矩形波包,计算了笛卡尔坐标、动量以及它们平方的平均值。