| 1. | Kinetic energy distribution of raindrops on loess plateau 黄土高原降雨雨滴动能的分布律 |
| 2. | Design and application of kp test for target detection distribution law 目标探测分布律kp法检验设计及应用 |
| 3. | Concomitant of order statistics ; extreme - value distribution laws ; weak convergence of distribution 伴随次序统计量极值分布律型分布函数弱收敛 |
| 4. | In this papcr , wc discussed the fully discrete multi - type risk model and several random variables relate to the time of ruin . the recursive formulas and explicit expressions of ruin probability and the distribution law of the surplus immediately before ruin were obtained . by " martingale approach " , wc get an upper bound of ruin probability 本文在经典风险模型的基础上建立了完全离散的多险种风险模型并对该模型讨论了几个和破产时刻有关的随机变量。得到了破产概率以及破产前盈余的分布律的递推解和显式解,采用鞅方法,我们得到了一个破产概率的一个上界。 |
| 5. | The paper explored the pdf of the spatial distribution of the day precipitation . the result shows that the weibull distribution is good on describing the heterogeneous of the spatial distribution of the day precipitation in china . the exponential distribution is n ' t ideally suited to the day precipitation 利用负指数分布和weibull分布拟合全国范围内的逐日降水水平空间概率分布模式,发现负指数分布模式并不能很好的拟合大范围区域逐日降水量场空间分布型,而weibull分布的拟合效果很好,表明用weibull分布描述中国区域逐日降水量空间分布非均匀性的分布律是非常适宜的。 |
| 6. | Validation of the observing velocity data in different channels indicates that the velocity distribution law given by authors is in accordance with the real velocity - distribution perfectly in open channel ; and the relative error between observing value and calculating value of point velocity is small , which can satisfy the precision requirement in the calculation of velocity distribution and discharge in open channel 采用不同管道流速资料进行验证,表明所提出的明渠流速分布律与实际分布一致,对应测点流速相对误差较小,可以满足明渠流速分布及流量计算精度要求。 |
| 7. | The scheme is on the basis of the heterogeneity of soil water content ' s horizontal spatial distribution in the region and the evaporative power of relatively saturated region . if the probability density function ( pdf ) of soil water content ' s horizontal spatial distribution and the evaporative power of relatively saturated region are attainable , the mean evapotranspiration flux of the region can be calculated 该方案以区域内土壤水分在水平空间上分布的非均匀性和相对饱和区地表蒸发力为基础,在已知土壤水分水平空间分布律的概率密度函数( pdf )和饱和区地表蒸发力的前提下,实现区域平均蒸发散量的计算。 |
| 8. | At first , based on the 272 station monthly precipitation in china , the paper described the heterogeneous of the spatial distribution precipitation by use of the curve of lorenz and the coefficient of g . the results show that the heterogeneous of the spatial monthly precipitation in summer is stronger than in winter . based on this describing , the probability distributions function of the spatial distributions are fitted by use of the gamma distribution model , and this general principle is examined . the results show that the gamma distribution is good on describing the heterogeneous of the spatial distribution precipitation in china 并以分布拟合中国区域月降水量的空间概率分布,拟合效果优良,表明描述中国区域月降水量水平空间分布非均匀性的普适分布律以分布的pdf最为适宜;以1 、 4 、 7 、 10月具有代表性的资料为例分析了各季月降水量空间分布型的主要特征及其形成原因,并从一个侧面表明我国月降水量空间分布的偏态性正是我国降水气候的最显著统计特征之一,这也与我国大陆性季风气候特点密切相关;并且月降水量的基尼系数和分布模式形状参数值都是夏季大于冬季,说明月降水量的空间分布非均匀性夏季比冬季弱。 |
| 9. | The method plays an important role in distinguishing and studying the complicated and confused spectral characteristics and mechanisms of the rare earth . ( 2 ) it is found and explained that due to the boltzmann distribution law at room temperature , the positions of the fine peaks of the photoluminescence band stemming from the transitions between an excited state and the ground state of a re3 + , match these of the absorption bands from the transitions between the ground state and the excited state . the stark split energy levels of the ground state 4i15 / 2 and two excited states 2s3 / 2 and 4f9 / 2 of the er3 + in er203 have been determined 薛理辉武汉理工大学博士学位论文摘要( 2 )发现在常温下,由于boltzm ~分布律的作用,在re3 +的基态电子态和激发态间跃迁所产生的发光谱带和吸收谱带中的精细谱峰的位置一一相同,解释了产生这种关系的原因,并弄清了er203中er3 +的基态电子态4lts . 12和激发态电子态2凡/ 2 、 4凡/ 2的stark能级分裂情况,确定了常温下erzo3中er3 +的4了15 / 2一2凡/ 2和‘ i , 5 / 2一‘凡/ 2精细能级间的跃迁形式。 |