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The effects of blade stiffness mistuning on the natural frequencies and mode shapes in the frequency veering region were studied based on the lumped parameter model of a bladed disk. A parameter L was introduced to define the severity of mode localization.

基于叶盘集中参数模型,分析了叶片刚度失谐对频率转向区内的系统固有频率及叶片模态振型的影响,提出了一个描述模态局部化程度的参数,仿真研究了频率转向特征对失谐叶盘模态局部化程度的作用规律。

The traditional mathematical analysis of pulse tracing graph is a time domain analysis that found part parameters defining traditional Chinese medicine pulse tracings and interpreted the relation between pulse tracings and disease of entrails.

传统的脉象图形数学分析法为时域分析法,对时域内脉象图的特征形参数进行分析研究,寻找出了部分中医脉象的参数定义,解释与疾病的关系。

The traditional mathematical analysis of pulse tracing graph is a time domain analysis which found part parameters defining traditional Chinese medicine pulse tracings and interpreted the relation between pulse tracings and disease of entrails.

传统的脉象图形数学分析法为时域分析法,对时域内脉象图的特征形参数进行分析研究,寻找出了部分中医脉象的参数定义,解释了脉象三部九候与脏腑疾病的关系。

Based on the above-mentioned parameter, according to the relationship between robust estimation and nonlinear diffusion, the Turkey loss function is introduced as the diffusion function in SAR image decomposition because of its better performance, and the contour of an image is extracted by the Turkey diffusion function with the proposed diffusion parameter mentioned above. The experiment results indicate that the Turkey loss function based diffusion process can strengthen the conspicuous contour. Additionally, a Raita\'s criterion-based method, solving the automatic diffusion threshold, is proposed to automatically set the threshold in diffusion decomposition.

针对基于梯度参数和局域方差系数的扩散在对SAR图像进行分解时存在的缺陷,提出了一种局域方差系数与窗口幅度均值积的扩散系数,该系数能够更有效地实现潜在目标区域和背景区域的区分;在此基础上,根据鲁棒估计与非线性扩散的联系,引入扩散效果更好的Turkey损失函数作为图像分解中的扩散函数,并结合局域方差系数与窗口幅度均值积的扩散参数来提取图像的轮廓,结果表明:基于Turkey损失函数的扩散过程对特征突出的边缘所起的&强化作用&更加明显;此外,针对扩散分解中的阈值确定问题,提出了一种基于拉依达准则的扩散阈值自动求解方法,实现了扩散阈值的自动求解。

By field and indoor test, the paper measures soil physical property, soilmoisture constant and soil water movement parameter, provides the soil specificgravity , the soil apparent density, the soil fraction, the soil field moisturecapacity, the soil saturated moisture capacity, the soil percent moisture content ofcom germination and seedlings emergence, the corn wilting point, and alsoestablishes the equation of soil water retention curves, the equation of soil waterdispersion coefficient and the relationship between pressure and soil apparentdensity, and so those provides the parameter for numerical simulation.

通过田间和室内试验,测定了供试土壤的物理性质、土壤水分常数和土壤水分运动参数,得到了该土样的比重、容重、机械组成、田间持水率、饱和含水率、玉米种子发芽出苗土壤含水率、玉米凋萎系数,给出了土壤水分特征曲线方程、土壤水分扩散系数方程及土壤容重与土壤压紧力的关系,提供了数值模拟过程中所需的参数。

In this paper,we present a method to enhance the signal/noise ratio of three-component seismic data by an adaptive polarization filter.To achieve this aim,the matrix of spectrum density is constructed,after the introduction of multi-taper method,to compute th...

本文在引入多窗谱分析方法的基础上,通过对谱密度矩阵特征问题的求解提取三分量地震记录的偏振参数,实现频率域偏振分析;根据所求得的偏振参数以及随机噪声和有效信号的偏振特性差异,设计相应的自适应滤波器,通过该滤波器的滤波作用,最终实现压制随机噪声的目的。

In the second part of the paper, the sport techniques of the flight elements was analysised in-depth theoretically by the movement technical structure:①the giant swing was first analysised in mechanics by applying the Kane's method, the dynamic equation of 5-link multi-body model was established, and the computer simulation software of the giant swing on the high bar was developed.

其次,作为单杠上飞行动作系统性研究的另一主要方面,本论文对飞行动作一般技术结构中的各技术环节进行了深入的理论分析:①着重对飞行动作准备阶段的回环运动技术进行了动力学分析,主要采用了多体力学理论中的Kane方法,建立了5环节人体回环运动的动力学方程,并应用计算机数值仿真技术研制开发了用于回环运动动力学分析的数值仿真软件,进而以动作实例对回环运动进行了数值仿真与误差分析,其所得到的数值仿真结果能够满足对人体回环运动的动力学分析和仿真要求;②对于飞行动作的撒手技术环节,本论文从人体环节相对运动角度,来分析撒手时人体质心的运动以及撒手时角动量参数,并列举了几种飞行动作撒手技术的基本力学指标;③关于飞行动作的空中技术,论文在总结了空翻转体动力学机理的研究成果基础上,对人体空中运动定量化问题进行了一般性描述,并进一步应用刚体动力学理论,着重建立起了描述空翻与转体技术之间定量化的关系,讨论了空翻转体运动的稳定性及其运动模式的转换问题,它对于定量地评定空翻转体技术以及今后对空翻转体动作进行数值仿真都具有理论上和实践上的重要意义;④关于飞行动作再握技术环节,本论文避免了以再握瞬时性的力学参数指标来描述再握技术特征的简单化途径,提出以再握下摆与回环下摆相对比的方法来研究再握技术,并以飞行动作再握技术的具体实例进行了对比分析,表明再握下摆技术相比回环下摆技术有着相当的困难性和复杂性,运动员对再握下摆过程中各环节的相对运动实施有效的控制,是连接高难动作以及顺利流畅地完成成套动作的关键。

Soil water characteristic curve was measured with a sand column for both drying and wetting processes, and the data were used to fit the van Genuchten model. The fitted curve is in good agreement with the actual measurements, residual water content and other factors used in the van Genuchten model were obtained. For the sand studied,. The results from this study may provide reference for research of water and solute movement in unsaturated soil.

利用Van Genuchten模型对用砂性漏斗测量中砂的吸湿过程和脱湿过程土壤水分特征曲线进行拟合,结果表明实测曲线和拟合曲线吻合很好,并得出Van Genuchten模型中的残余含水量、特性参数α和n,模拟计算表明,中砂有α=1.69α的关系,为研究水分和污染物在非饱和土壤中运移问题提供土壤水分运动键参数。

Bringing security metric as a QoS parameter is a new strategy in QoS routing.Aiming at the problems that the way of characterizing the link safety using only one security metric in QoS routing,a strategy that using multi-security metric as routing parameter is proposed.This will characterize the link safety much more exact.The authors will use the strategy mentioned before for secure routing based on differentiated service.

将安全度量作为一种QoS参数进行路由选择是目前网络安全路由研究的一个新思路,针对现有方法采用一个安全度量参数描述链路安全性,进行路由选择存在的问题,提出一种多安全度量的链路安全性描述策略,能够更加全面准确地描述网络链路的安全特征;该描述策略应用于区分服务模型下的安全路由选择,并提出了基于改进的非支配遗传算法的多目标最优化安全路由算法求解这一多目标多约束的NP完全问题。

Bringing security metric as a QoS parameter is a new strategy in QoS routing.Aiming at the problems that the way of characterizing the link safety using only one security metric in QoS routing,a strategy that using multi-security metric as routing parameter is proposed.This will characterize the link safety much more exact.The authors will use the strategy mentioned before for secure routing based on differentiated service.An algorithm named MOSRA(Multi-Object Optimal Secure Routing Algorithm)based on nondominated sorting genetic algorithm under Differentiated Service Model is proposed to solve the NP complete.

将安全度量作为一种QoS参数进行路由选择是目前网络安全路由研究的一个新思路,针对现有方法采用一个安全度量参数描述链路安全性,进行路由选择存在的问题,提出一种多安全度量的链路安全性描述策略,能够更加全面准确地描述网络链路的安全特征;该描述策略应用于区分服务模型下的安全路由选择,并提出了基于改进的非支配遗传算法的多目标最优化安全路由算法求解这一多目标多约束的NP完全问题。

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推荐网络例句

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里,举止就文雅一些,因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计,这件高贵的制服是香港本土制造,是我们第一套不配帽子的制服。

Do not 'inflate' your achievements and/or qualifications or skills .

不要 '夸大' 你的业绩或成果,条件或者技能。