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沂蒙山区中华蜜蜂色型多样性研究
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作者 李馥霞 宋美英 杨燕 《中国蜂业》 2024年第9期70-72,共3页
色型标记是蜜蜂形态学标记中的一项重要指标。试验采集了沂蒙山中华蜜蜂(北方型)保护区内活框养殖中华蜜蜂样本125群、原生态养殖中华蜜蜂样本25群,对2250只工蜂进行唇部、小盾片及背板7项色型指标的分析,研究保护区内中华蜜蜂色型多样... 色型标记是蜜蜂形态学标记中的一项重要指标。试验采集了沂蒙山中华蜜蜂(北方型)保护区内活框养殖中华蜜蜂样本125群、原生态养殖中华蜜蜂样本25群,对2250只工蜂进行唇部、小盾片及背板7项色型指标的分析,研究保护区内中华蜜蜂色型多样性。结果表明:沂蒙山区中华蜜蜂色型较为丰富,活框养殖中蜂不同色型指标差异显著(P<0.05),原生态养殖中蜂上唇主要色型与活框养殖中蜂结果相同,以6型为主。上述结果可为沂蒙山区北方型中华蜜蜂种质资源评价和保护利用提供理论依据。 展开更多
关键词 中华蜜蜂 色型指标 沂蒙山区
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An effective method for performance evaluation of ACLS based on improved grey analytic hierarchy
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作者 LI Yan YIN Haitao 《Journal of Measurement Science and Instrumentation》 CAS CSCD 2022年第2期166-172,共7页
The performance evaluation of automatic carrier landing system(ACLS)is an important part in the field of carrier aircraft landing control.Combining grey analytic hierarchy theory and data normalization theory,an impro... The performance evaluation of automatic carrier landing system(ACLS)is an important part in the field of carrier aircraft landing control.Combining grey analytic hierarchy theory and data normalization theory,an improved grey analytic hierarchy method is introduced to evaluate the performance of ACLS.A complete performance evaluation indicators system of ACLS is established,and the definition and calculation formula of each indicator are provided.The grey analytic hierarchy model is modified to improve the real-time performance of the algorithm,where traditional expert scoring sampling matrix is substituted by an indicator normalized sample matrix.Taking a certain ACLS as an example,the experimental simulation is carried out,and the simulation results verify the reliability and the accuracy of the improved grey analytic hierarchy method. 展开更多
关键词 automatic carrier landing system(ACLS) evaluation indicators system grey analytic hierarchy model normalization sample matrix
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