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The main factors affecting the soil-structure interface behaviors were found experimentally and theoretically, including: 1 the thickness of the interface that is five to six times the average grain size of the soil; 2 the aeolotropy of interface, which is responsible for anisotropic response of the stress-strain response of the interface; 3 two physical states, including crashing and compression of the soil near the structure surface, which govern the stress-strain response of the interface strongly; 4 two shear deformation components due to sliding and constraint of the structure surface relative to the soil respectively, which forms the deformation of the interface; 5 the volumetric strain due to dilatancy, which is found to be composed of a reversible dilatancy component and an irreversible dilatancy component. 4. A unified constitutive model of the interface, based on new elasto-plasticity damage theory, was developed. It was confirmed to be effective for the conditions considering monotonic and cyclic shearing, coupling effect of shear and volumetric strains, evolution of physical state, micro-structure aeolotropy of the soil and the resulting aeolotropy of the interface as well as the three normal boundary conditions stated above. 5. 2D and 3D finite element formulations of the present model were derived and incorporated into the FEM codes. They were applied to the evaluation of practical engineering problems with different typical interfaces between soil and structure. The new model was shown to be reasonable and effective.

确定了粗粒土与结构接触面厚度约为5~6倍的平均粒径,首次揭示了接触面的细观结构异向性以及由此所引起的宏观剪切异向性,发现了在单调和往返剪切荷载作用下土颗粒破碎和剪切压密两种物态变化机制共同支配着接触面力学性质的变化,通过细观分析证实了接触面的变形可分解为一般同时发生的土与结构交界面上的滑移变形以及结构面位移约束范围之内土体本身的剪切变形两部分,观测到接触面受剪时表现出明显的相对法向位移,并可分解为可逆性和不可逆性两个分量;(4)建立了第一个能够统一地描述单调与往返剪切特性、剪应变与体应变耦合特性、细观结构和宏观剪切异向性以及土颗粒破碎等物态变化特性的土与结构接触面弹塑性损伤本构数学模型,并采用多种法向边界条件复杂加载路径的试验成果验证了新模型的合理性和有效性;(5)提出了新模型的二、三维有限元格式并结合实际边值问题进行了应用计算分析,比较了不同接触面本构模型对计算结果的影响,证实了新模型及其有限元格式不仅能够合理地描述土与结构接触面的主要力学特性,还能够较好地反映土体与结构物在接触面处的滑移、脱开等不连续现象。

We firstly summarize the NN system modeling methods and the popular optimization algorithms, and point out the deficiencies, the limitation of noise cancellation modeling and the need of human intelligence participation, in our former optimization work after analysis. An abstract problem is extracted. It is to find out control variant that makes system output optimized using the data comprising a sample set with N x samples and their corresponding y, and it does not explore given system and achieves full automatic computation procedure. Next we propose a multi-variant controlled system optimization method utilizing CASSANDRA-I small type neural computer and program its application software. Moreover systematic experiments are made to demonstrate the method's validity, ability of noisy samples disposal and practical application.

我们总结了神经网络系统建模方法以及得到广泛采用的优化算法,并分析指出我们前阶段的优化工作中存在的去噪声建模有局限性和计算过程需人干预的不足,在此基础上把问题抽象为:已从系统获得含N个控制量样本的样本集S以及每个样本对应的系统输出,如何依据这些数据求出一个使系统输出y得到优化的控制量x,而不研究具体系统,实现不需要人智能参与自动完成的计算过程;提出应用人工神经网络硬件系统——CASSANDRA-I小型神经计算机的多变量控制系统优化方法,设计完成了其应用软件;并进行系统的实验工作,验证算法的有效性以及此方法处理带噪声样本和实际应用能力。

The inconsistencies of dimensional reduction and naive dimensional regularization in dealing withChern-Simons-matter theory are analyzed.The consistent dimensional regularization combiningwith higher covariant derivative regularization is adopted to consider Chern-Simons field theorycoupled to complex scalar and spinor field.All the local parts of one-loop two-point functionsand three-point functions are computed.Slavnov-Taylor identity is combined with these explicitcalculation results to give the one-loop local effective action.The finite gauge invariant quantumcorrection is shown and finite wave function renormalization constant for each field is defined.Thelocal part of one-loop three gauge field vertex is especially evaluated and it is verified that thereexists a renormalization choice compatible with BRST symmetry.

然后计算了所有的两点函数和三点函数单圈修正的定域部分,利用S-T恒等式给出了单圈定域有效作用量,定义了场的重正化常数,发现物质场和规范场都存在有限的规范不变的量子修正,并讨论了这些有限的规范不变的量子修正的物理意义,进而通过考察单圈三规范场顶角,表明存在与BRST对称性相容的重正化选择。5、在背景场方法的框架下,选择高阶协变导数正规化与维数正规化的杂化正规化方案计算了背景场两点函数的两圈量子修正,结果表明,标志紫外发散的极点项恰好抵消;进一步利用背景场方法中明显的规范对称性,证明背景场三点函数的两圈图贡献也是有限的。

If the operator does not grasp now market development this trend, cannot manage the modernized management to take develops diligently goal, if the operator does not grasp the market development this to be unable to cause the management detachably now, the source of wealth to be luxuriant, uses the advanced data bank administration software management, may solve puzzle enterprise information questions and so on work security, reliability, single plane/Uses under the advanced number network environment the running rate to be quicker, the performance is stapler, data exchange speed even more quickly, accurate, running rate to be possible to hold the many client side concurrent operation quickly.

在此基础上现在有很多的商品批发商还是用手工出货,进货,计算,统计,那么成本方面和效率方面一定不高,如果达到以最小的成本得到最大的利润,那么一定需要选择科学,自动的管理方式。经营者如果不掌握当今市场发展的这一走向,就不能将现代化经营方式作为努力开拓的目标,就无法科学经营管理,让自己财源茂盛。如果采用先进的数据库管理软件管理,可以解决困扰企业信息化工作高成本、低产出、安全性、可靠性等问题,计算机/网络的管理软件运行速度快,性能更稳定,数据交换速度更加快捷、准确,可容纳多个客户端同时操作。

Shim current calculation When shim coils are excited by appropriate current, they can generate correcting magnetic field to compensate the imaging magnetic field unhomogeneity. Based on the indirect calculation method, we proposed a novel iterative optimization algorithm to calculate shim current. Because there is a direct proportion relationship between FID signal and magnetic field homogeneity, we use the intensity of FID signal as feedback information to the calculation. Shim current can be worked out in less than 3 minutes. This satisfied the requirement that active shimming should be performed in real time.

5匀场电流计算对匀场线圈施加适当的电流后才能产生校正磁场消除成像磁场的非均匀分量,本文在匀场电流间接计算方法的基础上,利用磁共振成像原理中磁场均匀性与系统FID信号强度成正比的关系提出了一种电流迭代优化算法,将系统FID信号强度的变化作为反馈信息,能够快速计算出匀场电流对成像磁场进行补偿校正,平均耗时不到三分钟,满足磁共振成像系统对有源匀场的实时性要求。

Shim current calculationWhen shim coils are excited by appropriate current, they can generate correcting magnetic field to compensate the imaging magnetic field unhomogeneity. Based on the indirect calculation method, we proposed a novel iterative optimization algorithm to calculate shim current. Because there is a direct proportion relationship between FID signal and magnetic field homogeneity, we use the intensity of FID signal as feedback information to the calculation. Shim current can be worked out in less than 3 minutes. This satisfied the requirement that active shimming should be performed in real time.

5匀场电流计算对匀场线圈施加适当的电流后才能产生校正磁场消除成像磁场的非均匀分量,本文在匀场电流间接计算方法的基础上,利用磁共振成像原理中磁场均匀性与系统FID信号强度成正比的关系提出了一种电流迭代优化算法,将系统FID信号强度的变化作为反馈信息,能够快速计算出匀场电流对成像磁场进行补偿校正,平均耗时不到三分钟,满足磁共振成像系统对有源匀场的实时性要求。

In this paper, basted on the sum-up and investigation of simulation calculation of long-span bridge construction in nation and international, the detailed approach of imitated calculation of long-span CFST arch bridge is given out, and the reason why the general backward analysis is not suitable for the application of the rib-hoisting of CFST arch bridge is analyzed. And an applied method for forward analysis based on iterative theory is put forward.

本论文通过对国内外桥梁施工仿真计算成果的总结和研究,给出了大跨度钢管混凝土拱桥仿真计算的具体步骤,分析了一般的倒退仿真计算方法不适合应用于钢管混凝土拱桥吊装的原因,并为此提出了基于迭代理论的前进分析实用方法。

First, calculates the fast moving average (usually 12 days) and slow moving average (usually 26 days) by exponential calculation method; second, make fast line value minus slow line value to gain the difference of relative distance. In order to make the trend signals more clear and less influence exerted by of excessive price fluctuation, the difference should be smoothly calculated (general elect 9 days) to get average of difference value. Chart the difference and its average in a coordinate with time for horizontal axis and MACD for vertical axis. Then we can apply the identical, contrary or cross signals through observing their direction, relative and absolute positions.

它首先以指数平滑计算法计算出快速移动平均线(一般选12日)慢速移动平均线(一般选26日),再以快速线数值减慢速线数值即得到快慢线相对距离的差离值,为使趋势信号更明显并且不受股价过分波动的影响,对差离值也进行平滑计算(一般选9日),得到差离值的平均值,把差离值和差离平均值画在以时间为横轴,以MACD为纵轴的坐标上,通过观察差离值和差离平均值的方向、绝对位置和相对位置关系,把它们的同向、异向和交叉现象作为买卖信号的提示。

Using the relative reflection as weighting factor, the weighted mean of the surface albedo over Dunhuang Gobi in typical arid region is calculated and its values are 0.255 ± 0.021. After canceling the interference of the buildings, the mean values of the roughness length averaged with logarithm is 0.0019 ± 0.00071 m. After removing the influence of the oasis, the soil wetness factor computed with data under condition of no precipitation is 0.0045. After removing the influence of the precipitation .the mean values of the soil heat capacity over Dunhuang Gobi in typical ac-id region is 112 × 10 ~6 m~(-3)K~(-1), a bit smaller than the values observed i n HEIFE. But the soil heat diffusivity and conductivity are about one of those observed in HEIFE. The soil water content over Dunhuang Gobi in typical synoptic condition is very little and does not exceed 1% basically.

并且利用相对反射为权重加权平均,计算得到典型干旱区敦煌荒漠戈壁的平均反射率为0.255±0.021;剔除建筑物干扰后,利用对数平均法计算的粗糙度长度平均值为0,0019±0.00071 m;剔除绿洲影响后,用无降水影响的资料确定出土壤湿度影响因子为0.0045;剔除降水影响后,用观测资料计算的敦煌典型干旱区荒漠戈壁的热容量平均值为1.12×10~6m~(-3)K~(-1),比&黑河试验&在戈壁和在其它沙漠观测的有关值略小一些,但热扩散率和热传导率都比&黑河试验&在戈壁观测的值小一倍左右;观测的敦煌戈壁典型天气条件下的土壤含水量非常小,基本上不超过1%。

A novel numerical boundary condition is presented in the paper, which is compared with the method of measured equation of invariance on computational time and memory requirement. It is demonstrated that the new boundary condition is of benefit both on the time and memory, therefore is an efficient method for computation of electrically large dimension objects.

本文给出了一种新的吸收边界条件,并与不变性测试方程法、矩量法在计算时间、存贮空间方面进行比较,结果表明运用这个条件在计算时间和存贮空间上都具有优点,是计算电大尺寸媒质柱体电磁散射特性的一种有效手段。

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Methods: Five patients with parkinsonism or dystonia were assigned to general anesthesia using an modified endotracheal tube.

本实验依照人体实验之相关规定进行,五位患有帕金森氏症或肌张力异常的病人接受神经立体定位手术。

If you can benefit from this book, it is our honour.

如果您能从本书获益,这将是我们的荣幸。

The report also shows that the proportion of unmarried men and women living together has doubled between 1986 and 2006, with 13 per cent of those aged 16 to 59 now cohabiting.

报告还指出,从1986年至2006年,英国未婚男女同居的比例增长了一倍,在16岁至59岁的人群中,有13%的人同居。