• In a long period, the deviation ratio of stock price tends to zero, the market is efficient.

    一个较长的时期内,如果噪声导致股票价格价值偏离度的均值能趋于股市有效率的;

    dict.cnki.net

  • The standard deviation and concentration ratio of local evaluation was used to identify and control collusion attack.

    采用基于局部评价标准差局部评价集中度方法识别抑制共谋攻击

    www.joca.cn

  • Moreover, the profit of contrarian strategies is significantly improved when the mean-standard deviation ratio optimization allocation is used.

    均值-标准差比率优化配置可以显著地提高反向策略赢利

    dict.cnki.net

  • According as compare of voltage deviation and its variable ratio, optimal control of voltage and current is realized with querying fuzzy control sheet and adjusting adverse variable pulse width.

    比较电压偏差及其变化率查询模糊控制调节逆变实现电压电流理想控制

    dict.cnki.net

  • For plastic deformation theory, it is assumed that the plastic strain tensor is proportional to the total strain deviation tensor and the ratio is a sealer 'function of the effective total strain.

    对于形变理论假定塑性应变应变量张量比例比例因子有效应变标量函数

    dict.cnki.net

  • I've heard you don't do your own programming. Do you understand the full significance of the results, and various components like standard deviation. and Sharpe ratio. ?

    据说不会编程能明白不同参数导致结果吗,比如标准违离夏普

    2008henan.com

  • ERROR - the deviation (difference or ratio) of a measurement from its true value.

    误差ERROR-测量相比测量偏差差值比值)。

    www.eefocus.com

  • Comparing the ratio of standard deviation to the average for these two distributions shows that they are similar.

    标准差两次平均值相比较,我们就能发现他们相像,(因为我们知道重力加速度是个常数)。

    article.yeeyan.org

  • The nonuniform coefficient is defined as the ratio of mean square deviation of mean interval discharges in a year to mean annual discharge of the year and it is a standard statistics.

    方法年内时段平均流量方差平均流量比值作为径流年内分配均匀系数,用标准统计量定量描述径流年内分配均匀性;

    dict.cnki.net

  • The quality model whose hit ratio of 5% deviation reach 0.508 is established by applying the technology of basic artificial neural network.

    普通神经网络建立起工艺参数预测力学性能质量模型模型预测结果5%命中率0.508

    dict.cnki.net

  • It is concluded that at low frequencies there is more deviation if signal-to-noise ratio is low or the reverberation time is short.

    结果表明,不同的数据处理方法频段信噪比较以及混响时间的情况下声学参量的影响较大;

    www.magsci.org

  • One method was getting the maximum and the minimum of the structural performance function by optimization, and then calculating the ratio of mean-value to deviation of the performance function.

    一种方法优化得到结构功能函数最大最小值计算功能函数均值比值

    dict.cnki.net

  • The comparison result of computation value and measure value shows that their deviation is within 3% for low load ratio, and has increasing tendency for high load ratio, but it is within 5%.

    对于较小负荷变化率,压力计算测量偏差小于3%,较大的负荷变化率时,偏差增大趋势误差小于5%。

    dict.cnki.net

  • The ratio of monthly mean error to standard deviation is used to find out where the systematic errors should be applied.

    系统性误差标准差比值分布可以看出需要适合于进行系统性误差订正地区

    epub.cnki.net

  • Good reappears were obtained in control of reasonable operation parameters, U'1 and U'2, under the suitable dilution ratio, within 2.5% relatively standard deviation.

    控制合理操作参数U1U2适宜稀释相对标准偏差2.5%以内得到良好重现性

    http://dict.cnki.net

  • In order to improve the precision, a microprocessor is used to modulate the duty ratio of PWM in PID regulation according to the deviation between the expected value and the feedback voltage.

    本设计采用电压反馈根据期望值反馈偏差PWM占空进行PID调节提高稳压电源的精度

    www.dictall.com

  • The leftward deviation of the cardiac apex, aortic root dilation and abnormal ratio of pulmonary artery to aorta were helpful to the prenatal diagnosis of fetal tetralogy of Fallot.

    主动脉根部内径增宽和肺动脉主动脉内径比值减小亦有助于产前诊断

    dict.cnki.net

  • Sludge settlement ratio is one of the main analysis items. The traditional detection of sludge settlement ratio is operated manually, which may make too much deviation.

    污泥沉降污水处理过程中的主要分析项目之一传统污泥沉降测量人工操作误差较大

    www.iwt.cn

  • In this paper, we first eliminate random factor based on the standard deviation of random factor, then detect the P phase with window energy ratio factors.

    本文提出对质点位移序列基于随机干扰标准差消除部分随机干扰影响然后通过窗口能量因子识别P到时的方法。

    www.dictall.com

  • The text adopts two methods named local standard deviation and de-correlation to estimate the signal-to-noise ratio of operational modular imaging spectrometer (OMIS) multi-spectral images.

    采用局部标准差相关实用型模块化成像光谱仪光谱图像信噪进行估算

    www.dictall.com

  • Random media are generated with different model characteristics which are heterogeneity aspect ratio, vertical spectral exponent, horizontal spectral exponent and fluctuation standard deviation.

    利用模型特征纵横纵向指数横向指数以及扰动标准差等模拟不同随机介质

    www.dictall.com

  • The compression work or the total pressure ratio of a compressor is determined through the use of cascade element performance data concerning deviation angle.

    压气机增压基元叶栅落后确定

    dict.cnki.net

  • Cpm is an overall capability index defined as the ratio of the specification spread (USL - LSL) to the square root of the mean squared deviation from the target.

    Cpm一个总体能力指数定义均值偏离目标值方差平方根规范宽度之间比值

    www.6sq.net

  • For a fixed standard deviation of the phase's fluctuation and the quantity , the larger the number of the constituent fields is, the bigger the fringe contrast ratio is.

    给定情况下,参与相干合束激光个数越多,远干涉条纹对比度越大

    www.jgjs.net.cn

  • For a fixed standard deviation of the phase's fluctuation and the quantity , the larger the number of the constituent fields is, the bigger the fringe contrast ratio is.

    给定情况下,参与相干合束激光个数越多,远干涉条纹对比度越大

    www.jgjs.net.cn

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