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Wavelet modulus maxima with high frequency and low frequency coefficients were obtained firstly through multiscale decomposition of well logging data;then important wavelet coefficients were chosen according to the fusion principle where high frequency coefficients were taken as maximal absolute values and low frequency coefficients were selected by edge detection principle;finally alternating projection algorithm was applied to reconstruct the fusion curve.

首先对原始测井曲线进行多尺度分解,得到不同尺度下的小波低频系数和高频模极大值;然后选用高频系数取绝对值极大、低频系数采用边缘法的融合规则,选取重要的小波系数;最后利用交替投影算法重构融合曲线。

It influences tidal flat development that this kind of alongshore transport and shoreward net transport of water and sediment might result in large-scale circulations, which contain some small-scale ones.

这种大尺度水平水沙输移,与较小尺度的水平水沙余循环一起,影响着潮滩的发育过程。

Based on this, the assimilative effect of the scale factor to the detected edges of adjacent corners is discussed and the inequality of the distinguishable resolution of the corners in scale-space with the scale factor is given.

以此为基础,讨论了尺度因子对相邻角点检测边缘的同化效应,给出了角最小分辨率与分析尺度的关系不等式。

On the basis of the 1 degree girded data of the seasonal mean temperature and salinity at standard levels in the South China Sea, mean Brunt-Visl frequency profiles were derived in order to compute numerically the vertical normal-mode for different seasons in various part of the South China Sea, and the associate linearized equation for horizontal large-scale waves is solved numerically with a improved thompson-Haskell algorithm.

根据南海1°×1°网格的标准层季节平均温、盐度资料,在未引入Boussinesq近似条件下,采用改进的Thompson-Haskell算法求解线性化斜压海洋水平大尺度波的垂直结构方程,从而得到了南海各网格点的第一斜压重力波相速度和相应的罗斯贝变形半径,并探讨其地理分布和季节变化特征,以期有助于南海环流和中尺度涡旋以及有关海洋侧边界效应的研究。

A novel algorithm for detecting corners is presented based on Curvature Scale Space and Multi-scale Curvature Product.

在曲率尺度空间和多尺度曲率积的基础上,提出了一种基于多尺度曲率多项式的角点检测算法。

The first step of this method is to remove the noises of image edge using wavelet modulus maximum's performance in multi-scale and Lipschitz exponent relation,and then adopts dynamic threshold,that is,former scale modulus image's mean modulus is used as next scale's modulus image threshold.Finally,this arithmetic is tested in image databases of cars.

一种改进的小波模极大值不变矩算法,首先利用小波模极大值在多尺度上的表现与Lipschitz指数的关系去除图像边缘的噪声点,然后采用动态确定阈值的方法,利用前一个尺度下模图像的平均模值作为后一个尺度下模图像的阈值,最后将此算法应用于汽车图像库。

The new calculation method of structural surfaces with different scales is given on the basis of block discrete element method in which contacts face to face. Moreover, a new discrete element model for simulating rock and soil blasting problem is built. The elements of new model can be split by itself in the program. There are small scale blocks around the charge, and large scale blocks are adopted in far zone.

在块体离散元面-面接触的基础上,给出不同尺度结构面的计算方法,建立离散元对岩土爆破模拟的计算模型,实现块体白分裂计算程序,在药包附近采用小尺度块体,远区采用大尺度块体,可以更为准确地描述爆破载荷下岩体结构面的尺寸效应。

In order to develop and modify Gregory scheme for cumulus convective parameterization,we make the improvement as follows:(1) The large-scale moisture convergence is taken into account and the organized inflow,which occurs in the area of large-scale moisture convergence and is directly proportional to it, is added to turbulent airflow.(2) The influence on saturation vapor pressure exerted by supercooled water is taken into account and the initial mass flux is adjusted. Based on diagnosis of the air heating and moistening, the downdraft airflow is adjusted.(3) Based on the character of our country heavy rainfall,which usually occurs in the mixed cloud consisted of stratocumulus and cumulus, the process of excessive convection is restrained by organized outflow in the top of cloud and improving downdraft current and by reducing the evaporation of rainfall and release of latent heat.

为了改进和发展Gregory积云参数化方案,(1)考虑了大尺度水汽辐合对积云对流的影响,即在混合卷入中加入有组织的卷入,让有组织的卷入存在于有大尺度水汽辐合的层次上,并且与大尺度水汽辐合直接成比例;(2)考虑了过冷水存在对饱和比湿的影响,调整了初始的质量通量,并且根据对大气加热加湿的诊断,调整了大气向下拖曳的强度;(3)根据我国降水多由层状云和嵌入其中的对流云混合产生的这一特点,对于过强对流过程进行抑制,在云顶加入有组织的卷出,同时加大向下拖曳的强度,减少蒸发以降低潜热的释放,抑制过强对流的发生。

Especially, the size and volume of sand-mound has constant variation at under the 100 m scale in the alluvial fan, and has random spatial pattern without law.

湖盆低地由自相关因素引起的沙堆大小和积沙体积空间异质性占主要部分,分别体现在1.2~84 m和1.2~505 m尺度;而山前冲积扇的随机因素引起的沙堆大小和积沙体积空间异质性占到100%,在100 m以下尺度该区白刺灌丛沙堆大小和积沙体积具有恒定的变异,其空间分布格局在这个尺度无规律体现呈随机分布。

Based on the return map and the principle of closed vectors, a new method is proposed to extract unstable periodic orbits embedded in chaotic attractors. As examples, the UPOs embedded in chaotic attractors of Logistic, Hénon and Lorenz are extracted respectively by this method. And our results of Skewed Hénon map also be compared with Nusse's. These results suggest that this method is valid for unstable periodic orbits from period one to period infinite of arbitrary dimension chaotic system. The dynamic considerations of spiking and UPO coding for individual neuron and neural system under external periodic and chaotic exciting stimulus also be studied in this dissertation. A lot of spiking phenomena, such as synchronization, period, and chaos appear alternatively with the changing of the stimulus frequency. For the small stimulus frequency the neuron could completely convey the periodic signal in synchronous anti-phase into interspike intervals sequences. For the slow time–scale chaotic input, the output two ISI sequences are reciprocally related to input signals, and their oscillation wave shape in time course can be derived from that of the input signals variation, furthermore, the similar input sequence and order of UPOs, distribution of LES and value of KYD remain in attractors reconstructed from ISI sequences.

发现周期信号在单个神经元传递过程中,随着激励频率的改变,神经元输出的峰峰间期interspike interval时间序列呈现出周期、混沌和准周期的交错变化,特别当外加激励信号频率较低时,周期信号可以通过神经元ISI序列以反相同步的周期运动形式传递下去;同时无论是周期还是混沌激励信号,在神经系统中的传递均与其自身强度和神经元之间的耦合强度的大小密切相关;快变时间尺度的混沌激励信号在耦合的神经系统传递过程中,会造成大量基本信息的丢失;而慢变时间尺度的混沌激励信号在神经系统传递中,它的非线性特征信息,如混沌吸引子、不稳定周期轨道、Lyapunov指数谱和分形维数,会通过系统输出的ISI序列部分地重现出来,如与输入慢变时间尺度的混沌激励信号相比,神经系统输出的ISI序列具有:相似几何形状的混沌吸引子、相近的Lyapunov指数谱和分形维数、局部结构相同的不稳定周期轨道的排列方式。

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歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车,和一双合并为一移交&整个lotta爱&。

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