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不确定性数学分析方法在河流水质评价中的应用 被引量:6
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作者 王玲杰 孙世群 田丰 《合肥工业大学学报(自然科学版)》 CAS CSCD 2004年第11期1425-1429,共5页
对几种常用不确定性数学分析方法在河流水质评价中的应用结合实例从各自适用范围、数学模型建立、权重确定方式、评价结果可信度等方面进行分析、对比。物元分析法能解决水质评价中的不相容问题并能刻画水质动态转化趋势,优于模糊综合... 对几种常用不确定性数学分析方法在河流水质评价中的应用结合实例从各自适用范围、数学模型建立、权重确定方式、评价结果可信度等方面进行分析、对比。物元分析法能解决水质评价中的不相容问题并能刻画水质动态转化趋势,优于模糊综合评价法和灰关联法。针对模糊综合评价法在运用最大隶属度原则得出评价结果时所存在的问题提出改进的加权平均法。 展开更多
关键词 河流水质评价 不确定性数学分析 模糊综合评价 灰关联 物元分析
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The new method of prediction on mining subsidence and deformation
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作者 姜岩 张玉卓 +2 位作者 宋振骐 A.SROKA 田茂义 《Journal of Coal Science & Engineering(China)》 2001年第1期25-29,共5页
A new probability function of mining overlying strata and subsidence is put forward that has a general statistical significance based on the ideal stochastic medium displacement model. It establishes a new system of p... A new probability function of mining overlying strata and subsidence is put forward that has a general statistical significance based on the ideal stochastic medium displacement model. It establishes a new system of prediction on horizontal mining subsidence and deformation, which gives a new method for prediction on mining subsidence and deformation. 展开更多
关键词 stochastic medium subsidence probability mining subsidence prediction method
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The New Criteria Robust Stability of Uncertain Neutral Systems with Discrete and Distributed Delays 被引量:1
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作者 XIONG Liang Lin ZHONG Shou Ming TIAN Jun Kang 《Journal of Mathematical Research and Exposition》 CSCD 北大核心 2008年第3期521-528,共8页
The robust stability of uncertain linear neutral systems with discrete and distributed delays is investigated. The uncertainties under consideration are norm bounded, and possibly time varying. By means of the equival... The robust stability of uncertain linear neutral systems with discrete and distributed delays is investigated. The uncertainties under consideration are norm bounded, and possibly time varying. By means of the equivalent equation of zero in the derivative of the Lyapunov-Krasovskli function, the proposed stability criteria are formulated in the form of a linear matrix inequality and it is easy to check the robust stability of the considered systems. Numerical examples demonstrate that the proposed criteria are effective. 展开更多
关键词 STABILITY discrete delay distributed delay neutral system linear matrix inequality (LMI).
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