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In the analysis of the frequent spectrum and the reflection coefficients, based on Godas two-points method which fit to the normal incident wave, a modified two-points method is derived that can be used to calculate the frequent spectrum and reflection coefficient of the oblique waves from which the frequent spectra of incident waves and reflected waves incoming in arbitrary angular, the bulk reflection coefficient and the frequent spectrum of reflection coefficient could be computed, also from which in theory the waves could be measured in two wave gauges which is disposed at any direction.

为了分析单向不规则波入射波的频率谱和反射系数,本文在Goda用于分析正向不规则波的两点法的基础上,提出了可用于斜向不规则波频谱分离及其反射系数计算的改进两点法,该方法可用于计算任意波浪入射角的入、反射波谱、总体反射系数和反射系数的频率谱,并且测量波浪过程的两浪高仪可在较广的方向范围内布置。

In the analysis of the frequent spectrum and the reflection coefficients, based on Goda's two-points method which fit to the normal incident wave, a modified two-points method is derived that can be used to calculate the frequent spectrum and reflection coefficient of the oblique waves from which the frequent spectra of incident waves and reflected waves incoming in arbitrary angular, the bulk reflection coefficient and the frequent spectrum of reflection coefficient could be computed, also from which in theory the waves could be measured in two wave gauges which is disposed at any direction.

为了分析单向不规则波入射波的频率谱和反射系数,本文在Goda用于分析正向不规则波的两点法的基础上,提出了可用于斜向不规则波频谱分离及其反射系数计算的改进两点法,该方法可用于计算任意波浪入射角的入、反射波谱、总体反射系数和反射系数的频率谱,并且测量波浪过程的两浪高仪可在较广的方向范围内布置。

In this paper, fuzzy theory, Markov chain and RFM model are integrated to evaluate customer lifetime values. This approach calculates the profit contribution of customers in every purchasing situation. Firstly, customer purchasing state is updated contiguously by fuzzy theory and RFM model with transition matrix which represents the probabilities among purchasing states. Then the profit contribution of each period is computed by using revenue and cost data. Finally, the profit contribution of each customer is accumulated through some discounting consideration. This will construct the final customer lifetime values.

本研究结合模糊理论、马可夫链、和RFM(recency, frequency, monetary; RFM)模式,配合折现模式来计算顾客终身价值,其中模糊理论及RFM模型定义顾客之购买状态,马可夫链则推算顾客在每期购买状态改变的机率,然后推估出顾客在每期交易的转换机率,再结合产品的收益与成本资料,算出顾客在各期对公司的利润贡献,最后将各期的利润贡献折现加总,计算出各种购买状况下的顾客价值,利用此顾客价值就可指出哪些是对企业有利的顾客。

In chapter three, we prove that there exist solutions to the Ky Fan variation inequality, as the set-valued mappings are defined on spheres in infinite dimensional Banach spaces or odd dimensional Euclidean spaces, following from these theorems, we obtain some fixed point theorems for set-valued mappings defined on a sphere. When G is an approximate compact convex subset of E, or G is a almost quasi-convex set-valued mapping, we prove that there exist solutions to and type generalized Ky Fan variation inequality, following these theorems, we prove several best approximation theorems and coincidence theorems involving two set-valued mappings and two different spaces. In chapter four, we first present a new Simplicial algorithm for computing the Leray - Schauder fixed points, the algorithm can solve the set-valued nonlinear complementarily problem. We give a condition to guarantee the computation proceeding in a bounded region. We present integer-labeling algorithms for computing fixed points of some set-valued mappings, the best approximation points and solutions to a kind of set-valued variation inequalities.

第四章给出了计算定义在非凸集上的非自映射的Leray-Schauder不动点的算法,而现有的不动点算法都是计算凸集的上半连续集值自映射的不动点;给出了保证计算有界的一个充分条件,我们的条件大大弱于Mdrrill条件,我们的算法也可用来计算Eaves不动点;给出了集值非线性互补问题存在解的一个充分条件,此时可利用Leray-Schauder不动点算法来求解;向量标号算法以往是计算集值映射不动点的唯一有效算法,我们给出用整数标号算法计算一类集值映射的Kakutani 不动点的算法;定义在紧凸集上的连续映射不一定有不动点,但一定有最近点,最近点是不动点概念的推广,我们给出了计算最近点的算法;集值映射变分不等式尚无有效的求解算法,我们给出求解一类集值映射变分不等式的算法。

Studies the effect of extraventricular wind speed at different heights on the thermal transfer coefficients for outer window s of high-rise buildings,establishes a formula for a variety of thermal transfer coefficients for outer window s at different heights.

为研究室外风速随着建筑物高度的变化,对高层建筑外窗传热系数的影响,参考已有文献导出了外窗传热系数随高度变化的计算公式,可用于各种外窗在任意高度下的传热系数计算,对于常用的木窗和钢窗给出300m以下的传热系数和传热系数高度附加率表,可供高层建筑外窗热负荷计算参考。

For the ill conditioned load flow caused by the error produced in the transformation from electricity quantities to average power, direct current load flow and sensitivity vector are presented to find out the ill node, then by adjusting the load curve and generation curve in a certain principle, which is shown in detail with several flow charts, a new operation mode is reestablished to ensure the convergence of the calculation. Optimal multiplier method is proposed to work out the least square solution according to ill conditioned structural power network. The electricity quantities flow method enhances the reliability and accuracy of the calculation of the power transmission losses.

该方法可根据当前输电网中各个变电站24小时的电量记录,利用电量潮流计算对输电网总线损和各条线路损耗进行计算,使计算的精度满足降损措施分析和指标考核的要求;并且对于由负荷出力曲线转化成平均功率计算潮流时引入的误差,进而导致潮流计算不收敛的情况,采用直流潮流法,依据相角对有功功率的灵敏度向量判断出"网络异常点",并且给出了解决此种情况的方法流程图;针对结构病态的电力系统潮流计算不收敛的情况,运用非线性约束优化方法中的最优乘子法求解潮流方程的最小二乘解,从而解决了电量潮流法计算理论线损时的收敛性问题,增强了该方法的适用性。

That is to utilize general MPI programming environment, program on the NHBL parallel computational model, analyze and predicate the running cost of program by using the cost function of this model, and analyze the scalability of program by using the time-scale scalability metric. Finally, we analyze the numeric algorithm example---matrix multiplication and the nonnumeric algorithm example---PSRS sorting on Dawning-1000 MPP and NHPCC-cluster NOW system by using the integrative method.

提出了将并行计算模型、算法、编程进行一体化的研究的方法,即利用通用的标准的MPI编程环境,将编程建立在NHBL并行计算模型上,并且利用该并行计算模型的评价函数进行分析、预测程序的运行代价,再利用时间比例的可扩放性分析方法来分析程序的可扩放性性能;最后我们用PSRS排序算法和矩阵乘法这两个典型的数值和非数值的算法,在曙光-1000并行机和NHPCC-Cluster工作站集群上进行了一体化的分析。

Strip limit minimum rollable gauge and minimum rollable gauge considering productivity are analyzed and derived using new rolling pressure model, work roll surface temperature rise formulae is derived on the basis of mill stand thermal balance. The affecting factors of work roll surface temperature and the influences on the choice of roll size are discussed.

本文从轧机结构设计、力能参数计算、强度设计计算等方面综合论述了辊系参数设计计算的基本理论,在理论上提出了采用考虑粘着摩擦的混合摩擦模型和考虑轧件的弹性变形计算冷轧薄板轧制压力的方法,推导并以冷轧机实测轧制压力验证了轧制压力新模型;应用新的轧制压力模型分析并推导了轧件极限最小可轧厚度和考虑生产率的最小可轧厚度公式;根据工作机座热量平衡原理推导了工作辊温升公式,分析了工作辊温度的影响因素,研究了工作辊温升对轧辊参数选择的影响。

Then, according to phase space reconstruct technique from one-dimensional and multi-dimensional time series, the quantitative criterion and rule of system chaos which combine neural network, analyses, computations and sort are conducted on EEG signals of five kinds of human consciousness activities. The author finds that statistic results of the determinism computation in time series indicate that chaos characteristic may lie in human consciousness activities, and central tendency measure is consistent with phase graph, so it may become one division way of attractor; approximate entropy of different subjects exists discrepancy; correlation dimension and Lyapunov exponent of different consciousness activities indicate that attractors of human activities are all fractional; nonlinear quantitative criterion and rule, which unites neural network, can distinguish different styles of consciousness activity in principle, and the result of sortation takes on that consciousness activity type of arithmetic is distinguished more easily than that of abstract.

采用一维与多维时间序列相空间重构技术和系统混沌的定量判据准则,结合神经网络,对五种思维作业方式的脑电信号进行了分析、计算与分类,发现确定性计算的统计结果表明人类的意识活动中可能蕴含混沌特性,中心趋向测量(Central Tendency Measure,CTM)与相图吻合较好,可作为EEG吸引子的区分方法之一;功率谱分析反映出单个受试者的各种意识形态的差异很小,但是不同意识活动谱中的活跃频段还是略有差异的;个体之间的近似熵存在差异,同种状态下近似熵大的人可能具有更好的创新性;关联维数和Lyapunov指数的计算结果表明大脑的运动落在具有分维的奇怪吸引子上;非线性量化方法与神经网络相结合,可对人脑思维活动进行较好的分类,并且从分类结果来看数理计算类思维活动较抽象类思维活动有着更好的区分度。

On the safe side, we should use active soil pressure and passive soil pressure to calculate the support strength before T increased. That is RA=EA-EP Among them: RA ………… holding strength EA ………… composite force of active soil pressure EP ………… composite force of passive soil pressure Immediately, flexural torque distribution of enclosure wall can be counted. Mmax is the location of shear force zero. Equivalence beam method abridges. No matter which kind of supporting structure form, the key problem lies in the establishment depth of catch point, severity of support and enclosure wall, penetration depth and pit bottom quality of soil property.

单道锚杆支护结构计算分别采用静力平衡法及等值梁法,根据试算法插入深度t值需先进行假定墙的插入深度确定后来计算支撑力,为了安全起见,可按插入深度增大前的主动与被动土压力合力计算支撑力即 RA=EA-EP 式中:RA …………支撑力 EA …………主动土压力合力 EP …………被动土压力合力随之可求围护墙的弯矩分布,Mmax为剪力为零点的位置,等值梁法的计算略述。

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推荐网络例句

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

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