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电力变压器故障类型与关键状态量关联规则分析 被引量:9
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作者 董翔 赵璧 +1 位作者 戴瑞成 董小兵 《浙江电力》 2020年第2期23-27,共5页
传统电力变压器设备运维大多采用状态检修技术,但积累的状态监测和检测数据没有得到充分挖掘利用,造成信息资源的浪费。以故障特征量为前项,以故障类型为后项,设置最小支持度和最小置信度,运用Apriori数据挖掘经典算法挖掘出变压器故障... 传统电力变压器设备运维大多采用状态检修技术,但积累的状态监测和检测数据没有得到充分挖掘利用,造成信息资源的浪费。以故障特征量为前项,以故障类型为后项,设置最小支持度和最小置信度,运用Apriori数据挖掘经典算法挖掘出变压器故障和关键状态量之间的关联规则。基于关联规则挖掘原理,利用SPSS Modeler软件平台建立电力变压器故障关联规则挖掘模型进行分析,得出了故障诊断的具体流程,旨在采取关联规则挖掘的方法发现状态特征量和故障类别之间的内在联系,对故障进行判定。 展开更多
关键词 电力设备 变压器 故障推理 数据挖掘 状态量关联
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Genetic Diversity and Interrelationship Among Mulberry Genotypes 被引量:1
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作者 Rita Banerjee Sukhen Roychowdhuri +3 位作者 Haradhan Sau Bimal Kumar Das Pannalal Ghosh Beera Saratchandra 《Journal of Genetics and Genomics》 SCIE CAS CSCD 北大核心 2007年第8期691-697,共7页
Fourteen morphometric traits were used to examine the genetic divergence of 25 mulberry (Morus spp.) genotypes from varied agroclimatic conditions of India. Wide variation was observed for all the traits. The genoty... Fourteen morphometric traits were used to examine the genetic divergence of 25 mulberry (Morus spp.) genotypes from varied agroclimatic conditions of India. Wide variation was observed for all the traits. The genotypes irrespective of their place of collection were grouped into 10 different clusters. Seven accessions, that is, Baragura-2, Gorabandha-2, Kalimpong, Herbertpur, Kollegal, Resham majri-7, and UP-14 each a cluster of unique entries will be of useful for genetic resources. Nevertheless, the correlation and path analysis suggest the direct selection of lamina length, fresh leaf weight, leaf area, and single leaf weight will be rewarding for mulberry leaf yield improvement. 展开更多
关键词 MULBERRY morphometric traits genetic divergence CORRELATION path analysis
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One-Way Information Deficit and Geometry for a Class of Two-Qubit States
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作者 王耀坤 马腾 +1 位作者 李波 王志玺 《Communications in Theoretical Physics》 SCIE CAS CSCD 2013年第5期540-546,共7页
The work deficit, as introduced by Jonathan Oppenheim et al. [Phys. Rev. Left. 89 (2002) 180402] is a good measure of the quantum correlations in a state and provides a new standpoint for understanding quantum non-l... The work deficit, as introduced by Jonathan Oppenheim et al. [Phys. Rev. Left. 89 (2002) 180402] is a good measure of the quantum correlations in a state and provides a new standpoint for understanding quantum non-locality. In this paper, we analytically evaluate the one-way information deficit (OWID) for the Bell-diagonai states and a class of two-qubit states and further give the geometry picture for OWID. The dynamic behavior of the OWID under decoherence channel is investigated and it is shown that the OWID of some classes of X states is more robust against the decoherence than the entanglement. 展开更多
关键词 quantum discord one-way information deficit Bell-diagonal entropy
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