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大连港码头荷载的统计分析 被引量:1
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作者 赵廷有 赵国藩 《大连理工大学学报》 EI CAS CSCD 北大核心 1990年第2期213-219,共7页
以大连港为例,阐述了港口码头如何收集荷载子样,选择任意时点荷载强度的概率分布.用平稳二项随机过程模型,推导出设计基准期50年内是大荷载值的分布.最后给出码头荷载均值、方差、变异系数和码头的设计荷载值.
关键词 码头 荷载 港口结构 概率分布
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Bull and Bear Dynamics of the Nigeria Stock Returns Transitory via Mingled Autoregressive Random Processes
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作者 Rasaki Olawale Olanrewaju Anthony Gichuhi Waititu Lukman Abiodun Nafiu 《Open Journal of Statistics》 2021年第5期870-885,共16页
This paper expounds the nitty-gritty of stock returns transitory, periodical behavior </span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><... This paper expounds the nitty-gritty of stock returns transitory, periodical behavior </span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">of </span></span></span><span><span><span style="font-family:""><span style="font-family:Verdana;">its markets’ demands and cyclical-like tenure-changing of number of the stocks sold. Mingling of autoregressive random processes via Poisson and Extreme-Value-Distributions (Fréchet, Gumbel, and Weibull) error terms were designed, generalized and imitated to capture stylized traits of </span><span style="font-family:Verdana;">k-serial tenures (ability to handle cycles), Markov transitional mixing weights</span><span style="font-family:Verdana;">, switching of mingling autoregressive processes and full range shape changing </span><span style="font-family:Verdana;">predictive distributions (multimodalities) that are usually caused by large fluctuation</span><span style="font-family:Verdana;">s (outliers) and long-memory in stock returns. The Poisson and Extreme-Value-Distributions Mingled Autoregressive (PMA and EVDs) models were applied to a monthly number of stocks sold in Nigeria from 1960 to 2020. It was deduced that fitted Gumbel-MAR (2:1, 1) outstripped other linear models as well as best</span></span></span></span><span><span><span style="font-family:""> </span></span></span><span><span><span style="font-family:""><span style="font-family:Verdana;">fitted among the Poisson and Extreme-Value-</span><span style="font-family:Verdana;">Distributions Mingled autoregressive models subjected to the discrete monthly</span><span style="font-family:Verdana;"> stocks sold series. 展开更多
关键词 Autoregressive Random Processes extreme-value-distributions Mingled POISSON Stock Returns
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Ⅰ型极值分布的环境因子 被引量:1
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作者 王善 盖京波 《强度与环境》 2002年第3期38-42,57,共6页
本文通过对Ⅰ型极值分布的理论分析和环境因子的二因子法 ,分别得到了Ⅰ型极大值分布和Ⅰ型极小值分布的环境因子 ,它们与正态分布的环境因子[1] 具有相同的形式。对Ⅰ型极值分布的环境因子进行了点估计 。
关键词 环境因子 二因子法 Ⅰ型极值分布 可靠性
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