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Risk Assessment of Diary Cattle Brucellosis Based on Systematic Multilevel Grey Relation Entropy Method
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作者 孙向东 江慎铭 刘拥军 《Agricultural Science & Technology》 CAS 2012年第10期2169-2174,2225,共7页
[Objective] The study was to explore the major factors affecting diary cattle brucellosis risk assessment,as well as their strong-to-weak sequence,so as to provide theoretical basis for assessing diary cattle brucello... [Objective] The study was to explore the major factors affecting diary cattle brucellosis risk assessment,as well as their strong-to-weak sequence,so as to provide theoretical basis for assessing diary cattle brucellosis risk level in different regions.[Method] From 4 dimensions of feeding and importing,breeding,housing and polyculture situation,an evaluation index system was set up,and diary cattle brucellosis risk survey was conducted in 3 typical regions.Finally,systematic multilevel grey relation entropy method was applied to perform data analysis.[Result] The strong-to-weak sequence of Level 1 impact factor of diary cattle brucellosis was as follows:feeding and importinghousingpolyculture situationbreeding;the sequence of Level 2 impact factor was U32〉U12〉U11〉U31〉U21〉U42〉U43〉U23〉U22〉U41;the risk level sequence of 3 typical regions was Province A(County A1,A2,A3)Province B(County B1,B2,B3)Province C(County C1,C2,C3).[Conclusion] According to the weight of Level 1 index strata,administrative departments at all levels and dairy cattle farmers should lay emphasis on the aspects of feeding,importing and housing;viewed from the perspective of Level 2 index strata,dairy cattle farmers should value the siting of cattle field,the brucellosis surveillance before importing and milking modes most.According to the diary cattle brucellosis risk level of 3 typical regions,if administrative departments at all levels strengthen peoples' awareness of their personal health and increase investment in this area,with new healthy cultured atmosphere built,the risk level of diary cattle brucellosis will surly decline. 展开更多
关键词 Systematic multilevel grey relation entropy method Diary cattle brucellosis Risk assessment
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对象识别研究模型分析
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作者 倪德强 常明 程涛远 《电脑知识与技术(过刊)》 2012年第8X期5511-5515,共5页
由于网络信息的分散性,基于不同数据源的数据集成是目前非常重要应用领域。对象识别工作是与信息领域中的应用密切相关的。不同的应用系统会有不同的对象识别优化工作。对象识别的有效程度决定了数据集成后形成的全局数据库的质量。文... 由于网络信息的分散性,基于不同数据源的数据集成是目前非常重要应用领域。对象识别工作是与信息领域中的应用密切相关的。不同的应用系统会有不同的对象识别优化工作。对象识别的有效程度决定了数据集成后形成的全局数据库的质量。文中全面的介绍了目前比较经典的几种识别模型,并对其进行了深入的分析。 展开更多
关键词 对象识别 上下文相关 多层联系 依赖关系
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