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基于FastDTW的道岔故障智能诊断方法 被引量:8
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作者 姬文江 左元 +2 位作者 黑新宏 高橋聖 中村英夫 《模式识别与人工智能》 EI CSCD 北大核心 2020年第11期1013-1022,共10页
道岔控制列车的行驶方向,是轨道交通系统的关键设备.文中采用ZD7型号道岔转辙机动作电流数据,提出基于快速动态时间规整算法(FastDTW)的道岔故障智能诊断方法.根据原始电流曲线特性将曲线分段处理,通过FastDTW计算待诊断电流曲线与模板... 道岔控制列车的行驶方向,是轨道交通系统的关键设备.文中采用ZD7型号道岔转辙机动作电流数据,提出基于快速动态时间规整算法(FastDTW)的道岔故障智能诊断方法.根据原始电流曲线特性将曲线分段处理,通过FastDTW计算待诊断电流曲线与模板电流曲线的扭曲路径距离,根据动态确定的最优阈值诊断故障.实验表明,该方法可适用于单动、双动型号道岔故障诊断问题,仅需200条道岔动作电流历史数据.该方法诊断准确率较高,时间较短,也适用于准确性、实时性要求较高的新型列控系统. 展开更多
关键词 道岔 转辙机 故障诊断 快速动态时间规整算法(FastDTW)
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Association of advanced glycation endproduct accumulation with overactive bladder in community-dwelling elderly: A cross-sectional Sukagawa study
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作者 Kenji Omae Noriaki Kurita +4 位作者 sei takahashi Shingo Fukuma Yosuke Yamamoto Shunichi Fukuhara The Sukagawa Study Group 《Asian Journal of Urology》 CSCD 2021年第2期189-196,共8页
Objective:This study aimed to evaluate the influence of advanced glycation end-product(AGE)accumulation on the prevalence and severity of overactive bladder(OAB)in community-dwelling elderly adults.Methods:We conducte... Objective:This study aimed to evaluate the influence of advanced glycation end-product(AGE)accumulation on the prevalence and severity of overactive bladder(OAB)in community-dwelling elderly adults.Methods:We conducted a cross-sectional study involving 269 Japanese community dwellers aged≥75 years in 2015.AGE accumulation was non-invasively measured via skin autofluorescence(SAF)values using AGE Reader.The primary and secondary outcomes were the presence and severity of OAB evaluated using the Overactive Bladder Symptom Score(OABSS).Individuals with an urgency score of≥2 and sum score of≥3 were considered to have OAB.The associations of SAF with the prevalence and severity of OAB were assessed using logistic and linear regression models,respectively,adjusted for clinically important confounders.Results:The median age of participants was 78 years.Of 269 participants,110(40.9%)were men and 75(27.9%)had OAB.The median SAF was 2.2 arbitrary units(AUs).Increasing median SAF was observed with increasing age.Multivariable analysis revealed that SAF was not associated with either the likelihood of having OAB(odds ratio per AU=0.77,95%confidence interval:0.37-1.62)or the natural log-transformed OABSS(0 per AU=-0.07,95%confidence interval:-0.26-0.12).Conclusions:In this study,AGE accumulation,as assessed by SAF,was not associated with the prevalence and severity of OAB in Japanese community-dwelling elderly people aged≥75 years. 展开更多
关键词 Advanced glycation end-products ELDERLY Overactive bladder Skin autofluorescence Urinary incontinence
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