| 天津港主航道船舶到达规律的统计分析 |
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| 引用本文： | 刘敬贤,李云斌.天津港主航道船舶到达规律的统计分析[J].武汉理工大学学报(交通科学与工程版),2008,32(2):351-354. |
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| 作者姓名： | 刘敬贤 李云斌 |
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| 作者单位： | 武汉理工大学航运学院,武汉,430063 |
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| 摘 要： | 以天津港2003~2005年船舶日到港统计量为样本,运用数理统计方法,给出了天津港日到港船舶分布的假设检验,并用正态分布密度函数曲线、泊松分布密度函数曲线对统计样本进行拟合,描绘了统计直方图.通过卡方检验,得出了正态分布的拟合程度优于泊松分布,研究结果表明,天津港主航道船舶日到达艘数服从正态分布.
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| 关 键 词： | 到港规律 概率密度 拟合 正态分布 |
| 修稿时间： | 2007年12月2日 |
Distribution Regularity Analysis of Ship Arrival and Department at the Tianjin Port Main Channel |
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| Liu Jingxian,Li Yunbin.Distribution Regularity Analysis of Ship Arrival and Department at the Tianjin Port Main Channel[J].journal of wuhan university of technology(transportation science&engineering),2008,32(2):351-354. |
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| Authors: | Liu Jingxian Li Yunbin |
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| Abstract: | In order to analyze the distribution characteristic of fleet of ships passing main channel of Tianjin port,the distribution of hypothesis testing of ship number through fairway of Tianjin port is given using mathematical statistic methods based on the samples of ship-to-port statistics of Tianjin port from 2003 to 2005.With normal density function curves and Poisson density function curves to fit the statistical samples,a histogram is obtained.By the chi-square testing,the fitting with the normal distribution is superior to Poisson distribution.Results show that the number of arrived ships at Tianjin port main channel is fitting the normal distribution. |
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| Keywords: | distribution regularity of arrival density of probability function fitting normal distribution |
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