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exponential相关的网络例句

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与 exponential 相关的网络例句 [注:此内容来源于网络,仅供参考]

In present, the discussions of EB estimation are almost all about to exponential distribution family and truncated distribution family, but linear exponential distribution is not exponential family and truncated family, thus, Empirical Bayes estimation for parameter of linear exponential distribution are studied in chapter 4 and chapter 7 that is new aspect.

当前对经验Bayes估计的讨论,大多是对指数分布族以及截断分布族的,线性指数分布即不属于指数分布族也不同于截断型分布族,因而在论文的第四章和第七章研究线性指数分布参数的EB估计是具有一定的新颖性的。

Under the heterogeneously exponential setup,we obtain the equivalent characterization in terms of parameters for the stochastic order between the sample range from nonidentical independent exponential observations and that from i.i.d,exponential ones;also,we derive the characterization for the likelihood ratio order between the second order statistics from heterogeneous exponential random variables.

在这种设置下,样本极差X_-X_(1,n)和Y_-Y_(1,n)之间的通常随机序可以用其参数的不等式来等价刻画。另外,我们也建立了第二顺序统计量X_(2,n)和Y_(2,n)之间的似然比序的等价刻画。

We provide a substitution box, exponential permutation which has much measurable security, and give a enumerating result and a fast algorithm of calculating such permutation. An almost perfect nonlinear exponential permutation with high algebric degree is proposed. with some discussion on how to select the parameters of such permutation. The experimental result shows us a conjecture that there exists no such permutation over even dimensional space. As a way of generating substitution boxes, we briefly point out the cryptographic weakness of the exponential functions derived from such permutation. We also present two new cryptographic indexes, fixed point and cyclic structure, on which we investigate the performance of such permutation. Finally, we give a viewpoint about the application of correlation immune functions in designing substitution boxes.

提供了一种可度量安全强度的代换盒-幂置换;详细阐述了幂置换的实现和计数问题;给出了一种计算幂置换的快速算法;从几乎完善非线性幂置换角度讨论了幂置换参数的选取,并提出了一种高次几乎完善非线性置换;通过试验给出了关于偶数维空间上几乎完善非线性幂置换的一个猜想;简要给出了由幂置换派生出的幂函数的密码局限性;针对幂置换,提出了两个密码安全指标:不动点和循环结构;证明了幂置换在这两个指标下的密码性能;简要讨论了相关免疫函数与代换盒设计的关系。

On the basis of 414 soil profiles from 14 provinces, it was found that soil organic carbon, differing from soil inorganic carbon and other elements, has a trend of exponentially decreasing with depth. Integral analysis of exponential curve contrasting with the linear model affords the uncertainties of linear model and exponential model for carbon storage calculation. It was found that the integration of TOC with the linear model has errors between +20% to +100%, much higher than that of the exponential model (-10% to +20%).

在收集分析14个省市414条的土壤剖面数据的基础上,发现土壤有机碳的垂直分布与无机碳和其他元素不同,存在指数分布规律,运用面积积分运算方法发现利用直线模型计算土壤有机碳库的误差(+20%~+100%)远大于指数模型的误差(-10%~+20%)。

We establish the relation of inversion formulas among generalized Radon transform with known weight functions, the exponential Radon transform and classical Radon transform, furthermore obtain approximate inversion formula of the exponential Radon transform, the idea of approach above is applied to contour reconstruction and is generalized to n-dimentional euclidean space case. We discuss the support theorem, range condition of the exponential Radon transform.

本文建立了带权广义Radon变换、指数型Radon变换与古典Radon变换反演公式的关系,从而得到指数型Radon变换的近似反演公式,并且应用这种思想方法于轮廓重构,并将这一结果推广到任意维欧氏空间的情形;讨论了指数型Radon变换的支集定理及值域条件。

Triple exponential smoothing method and the combined of triple exponential smoothing method and Markov model both belong to time series method. Triple exponential smoothing method strongerly dependenced to short-term data. The combined method needed data which had more accurate; it must be the data of population quantity of many years continuously.

2三次指数平滑法、三次指数平滑法和马尔可夫链预测模型的组合预测方法都属于时间序列分析法,三次指数平滑法对近期数据的依赖性较强,组合预测法对数据的要求较高,必须是多年连续的种群数量变动数据。

This paper studies the exponential stability of cellular neural networks with time- varying delay by making use of the homoeomorphism theory, the idea of vector Lyapunov function, M- matrix theory and inequality - technique, offering the grounds for uniqueness of equilibrium point existence and the global exponential stability and estimating the exponential convergence rate index.

利用同胚映射理论、向量Lyapunov函数思想、M-矩阵理论和不等式技术,研究了具有变时滞的细胞神经网络模型的全局指数稳定性,给出了判定平衡点的存在唯一性以及全局指数稳定性的一个判据,并且估计了收敛速度指标。

The saturated water content, field moisture capacity, wilting coefficient, available water, readily available water, slowly available water of experimented soils respectively has negative power, logarithmic, exponential, exponential, exponential, power, logarithmic relationship with soil bulk density.

土壤容重对土壤水分蓄持能力有较大影响,土壤蓄水能力随容重增大递减,比水容量也随容重增大递减,土壤饱和含水量、毛管断裂含水量、田间持水量、凋萎系数、有效水含量、易效水含量、迟效水含量与容重分别呈幂函数、对数、指数、指数、指数、幂函数、对数关系。

By utilizing an exponential transformation and piecewise linearization technique,transforming the exponential terms into the sum of absolute terms,and linearizing each absolute term,the original problem can be transformed into a linear programming problem which can be easily solved.

使用指数变换及利用分段线性化技术转变每个指数项为一些带绝对值项的和,再将绝对值项线性化,最终将原问题转化为一个线性规划问题。

Experiments of flow conductivity closure stress of typical propping agent are done, propping agent short-term flow conductivity alteration index is defined, by this, the relation between fissure short-term flow conductivity and closure stress, it is close to exponential relation. 4. Establishing the mathematical simulator of hydraulic fractured well's production in a steady state, finding the relation curve between dimensionless flow conductivity and fracture penetration coefficient by means of calculation and analyses, it is the basis of hydraulic fracture. 5. Expatiating the importance of optimized hydraulic fracturing design in reservoir engineering, advancing the optimizing design method, fracture dimension can be calculated easily when the physical parameters are known. 6. Production rate decline standard curve of vertical fractured wells is achieved by mathematical simulation, when the flow pressure is certain , by asymptotic analyze, this decline curve is close to exponential relation.

完成了国内外典型支撑剂的导流能力闭合应力影响实验,在数据分析中定义了支撑剂短期导流能力变异系数,并由此发现裂缝短期导流能力随闭合应力变化的近似符合指数关系式; 4 建立了一种水力压裂井稳态产能的数学模拟器,计算分析找到了最优无量纲导流能力与裂缝穿透比之间的新型关系曲线,它是水力压裂优化设计的基础; 5 阐述了水力压裂油藏工程优化设计的重要性,提出了优化设计方法,在已知支撑剂物性参数条件下可简洁计算最优裂缝尺寸; 6 数学模拟给出了垂直裂缝井产量递减标准曲线,在井底定压条件下通过渐近分析表明,该递减曲线满足指数关系式。

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