查询词典 correlation function

Using lag\|correlation analysis method, in terpretative variances analysis method,phrase comparing method to the wavelet an alysis result,we not only gained the variation at different scales of the globa l temperature and El Nino signals,the location of the jump points and latent sca le of these series,but also indicated the magnitude,extent of the effect of exte rnal forcing factors on ...

利用小波分析方法，辅之以滞后相关分析、解释方差分析及位相对应比较方法，得到了气温变化及ENSO活动在各尺度层次上的变化，突变点位置及特征尺度，并确定了太阳活动、火山活动和温室效应等外强迫因子对气温及ENSO的影响尺度、幅度及响应时间。

Soil carbon,soil total N,and pH belonged to high and soil total P belonged to medium degree spatial correlation at 60m lag intervals,respectively.However,there were significant differences in ranges of spatial autocorrelation among four soil properties,among which the effective range of soil organic carbon was the highest(261m),followed with soil total N(208m),pH(156m),and soil total P(133m).

在60m步长间隔尺度下，土壤有机碳、全氮和pH有强烈的空间相关性，土壤全磷空间相关性为中等程度。4种土壤养分的空间自相关范围具有明显的差异，有机碳的有效变程最大(为261m)，全氮(208m)和pH(156m)次之，全磷的有效变程最小(133m)。

When the signal sources have different cycle frequencies, a method to estimate the optimal time lag is presented. It solves the severe problem that the conventional Cyclic MUSIC requires knowing the optimal time lag in computing the cyclic correlation matrix. A method of two-step search for DOA estimation by employing an interleaving technique and a Joint Estimation Strategy is developed to overcome the inadequency of signal sources with the same cycle frequency having no optimal time lag.

当信源的循环频率各不相同时，提出了一种估计最佳延时的方法，解决了传统Cyclic MUSIC算法计算循环相关矩阵需要已知最佳延时的问题；为克服多个具有相同循环频率信源不存在最佳延时的不足，利用交错技术和联合估计策略，提出了两步搜索估计DOA的方法。

Analysis of lag correlation suggests that minimum cloud hydrometeors leads the maximum precipitation rate by 4-5 hour, and maximum cloud hydrometeors lags maximum precipitation rate by 1-2 hour.

滞后相关分析表明，降水率的峰值到来之前4-5小时云中水凝物含量最少，降水率的峰值到来之后1-2小时，云中水凝物含量最多。

The lag correlation indicates that the eastern Pacific SST in winter correlates with the WPSH anomaly two or three months later to the highest degree; the SST in the tropical Indian Ocean and the WPSH anomaly in the corresponding period significantly correlates with each other in winter; and the SST in the western Pacific in winter and spring negatively correlates to the WPSH anomaly in the corresponding period.

选取各关键海区分析海温与西太副高在不同时段上的超前滞后相关，结果表明，冬季东太平洋海温与滞后其2—3个月的副高异常达最大正相关，热带印度洋海温异常与冬季同期副高异常的正相关最显著；西太平洋海温在冬春季与同期的副高负相关最显著；北太平洋海温在冬春季滞后副高1—2个月时存在负相关，大西洋暖池区6月与西太副高的同期正相关最大；对南太平洋来说，冬季的西太副高与从前秋到春季的SST都存在最大负相关。

Based on weekly mean OISST, pentad averaged OLR and daily NCEP/NCAR reanalysis data, the intraseasonal variability of SST in the SCS is examined by using lag correlation analysis and composite analysis, respectively.

本文使用1982-1997年OISST周平均格点资料、OLR侯平均资料以及NCEP／NCAR再分析日平均资料集中的海表热通量、850 hPa风场以及海平面气压场等资料，采用不同的谱分析方法确认了南海全区SST季节内变化（30-90天）的存在性，并通过相关分析以及位相合成技术，分别研究了夏季风期间与冬季风期间南海SST季节内变化的基本特征和形成机制。

The correlation analysis between some properties of the lanthanides and their total angular quantum number L at ground state was made with satisfactory results.

将对应因子分析法用于磺酰脲类除草剂的构效关系研究，基于化合物的结构参数信息实现其除草活性的分类与预测。

Since Leptokurtosis, skewness and fat-tail are always used to depict market risk, this paper introduces the improved Laplace distribution to risk management of stock portfolio. Empirical results show, improved Laplace distribution and asymmetric Laplace distribution are similar for estimating Leptokurtosis, while improved Laplace distribution is better for estimating skewness.In order to analyze the correlation between return distribution and volatility, the thesis uses ARCH-M Models to simulate the return series of China's Stock Market and developed markets ao as to discover the relation between investment return and time-varying risk.

对尖峰、厚尾、偏态的刻画有助于正确估计市场风险，本文将改进型Laplace分布引入到股票组合的风险管理中，实证结果发现，改进型Laplace分布和非对称Laplace分布对尖峰、厚尾的刻画效果接近；而非对称Laplace分布对负偏性考察不足，改进型Laplace分布的拟合结果能够准确地反映股指收益的负偏态，这也正是改进型Laplace分布相对于传统的非对称Laplace分布的优势所在。

Empirical results show, improved Laplace distribution and asymmetric Laplace distribution are similar for estimating Leptokurtosis, while improved Laplace distribution is better for estimating skewness.In order to analyze the correlation between return distribution and volatility, the thesis uses ARCH-M Models to simulate the return series of China\'s Stock Market and developed markets ao as to discover the relation between investment return and time-varying risk.

在分布和波动相关性建模方面，本文利用ARCH-M族模型来模拟我国股市和成熟证券市场的收益序列，以揭示股票市场中投资收益与时变风险的关系，并对我国股市和成熟市场的风险补偿系数以及投资者风险承受能力进行比较研究。

According to the result, the confidence region of unknown parameters in single-index models is constructed. Finally, we consider the test of correlation and heterogeneity for hierarchical nonlinear mixed-effects models. According to Laplace approximation expansion of integrated log-quasilikelihood, a class of score test statistics is proposed. Under some very mild conditions, we prove the asymptotic distribution of the test statistics is a standard X~2-distribution. Through a Monte Carlo simulation study, the finite sample performance is examined.

最后，我们研究的第四个问题是分层非线性随机混合效应模型的相关性与异方差性检验问题，依据对数拟积分似然的Laplace近似展开提出了检验统计量，在一些正则条件下，得到了检验统计量的渐近分布是一个标准的χ~2-(来源：d7d7A65BC论文网www.abclunwen.com)分布，通过Monte Carlo模拟研究了其小样本的表现，实例验证了其实际应用。

Although translator has turned from being a crystal ball by which the original culture can unrestrainedly penetrate to another crystal ball by which the target culture can freely traverse, the translator's personal embodiment, in the process of cognitive act, are still absent in translation studies. Translators are still subjects without body or simply disembodied subjects.

译者虽然由原语文化可以自由穿透的玻璃球变成了译语文化可以自由穿越的玻璃球，但译者认知过程中的个体体验在翻译研究中依然缺席，译者依然仅仅是一个没有躯体体验的主体。

Chillingly, he claimed our technology is 'not nearly as sophisticated' as theirs and "had they been hostile", he warned 'we would be been gone by now'.

令人毛骨悚然的，他声称我们的技术是'并不那么复杂，像他们一样，和"如果他们敌意"，他警告说，'我们将现在已经过去了。