Recently,reports of Unidentified Flying Objects(UFO) have been occurring frequently in China.On July 7 this year,more than 20 flights were postponed at Xiaoshan International Airport in Hangzhou,Zhejiang Province,beca...Recently,reports of Unidentified Flying Objects(UFO) have been occurring frequently in China.On July 7 this year,more than 20 flights were postponed at Xiaoshan International Airport in Hangzhou,Zhejiang Province,because of a sighting.Whenever such reported sightings occur,Wang Sichao,a research fellow at the Purple Mountain Observatory(PMO) of the Chinese Academy of Sciences(CAS) in Nanjing,Jiangsu Province,is much busier than usual.In ad-dition to studying the sightings,Wang,who started work on UFOs nearly 40 years ago,has to check and reply to mail about UFOs from all across China.Lately,Wang predicted "great events" concerning UFOs were going to come out in China in the next two years.In an interview with Beijing Review,he shared his views and stories with reporter Tang Yuankai.Edited excerpts follow:展开更多
Voluntary research organizations are becoming more significant forces in the study of ‘lights in the sky’ something unusual was happening on the quiet, clear night in Hangzhou, Zhejiang Province, on July 7 this year...Voluntary research organizations are becoming more significant forces in the study of ‘lights in the sky’ something unusual was happening on the quiet, clear night in Hangzhou, Zhejiang Province, on July 7 this year. Because of sightings of an Unidentified Flying Object (UFO), more than 20 flights were postponed for 56 minutes at the city’s Xiaoshan International Airport. Immediately the event was connected with alien spacecraft. Speculations and rumors were everywhere.展开更多
非侵入式负荷监测(non-intrusive load monitoring,NILM)技术对于实现智慧用电与管理具有重要意义。针对现有的非侵入式负荷监测方法在高噪声环境下对特征相似电器以及微小负荷变化监测精度不足的难题,提出了一种基于单位力操作视觉变...非侵入式负荷监测(non-intrusive load monitoring,NILM)技术对于实现智慧用电与管理具有重要意义。针对现有的非侵入式负荷监测方法在高噪声环境下对特征相似电器以及微小负荷变化监测精度不足的难题,提出了一种基于单位力操作视觉变换器的非侵入式负荷监测(non-intrusive load monitoring based on unit force operated vision transformer,UFONILM)模型的非侵入式负荷监测的深度学习框架。UFONILM模型的单位力操作(unit force operated,UFO)模块通过层归一化和一系列卷积层有效地提取和利用了多尺度的时间序列数据,特征。在标准的UK-DALE数据集上进行的实验显示,UFONILM模型在准确性和F1得分上均优于现有方法,特别是在细粒度的负荷监测场景中。研制了基于UFONILM模型的嵌入式系统,实现了边缘计算的非侵入式负荷监测,可实时监测和响应电网中的异常用电行为,如违规充电事件。实验检测证明,UFONILM模型嵌入式非侵入式负荷监测方法在监测效率方面具有显著的提升,具有高效、便捷安装、可扩展等特点。展开更多
文摘Recently,reports of Unidentified Flying Objects(UFO) have been occurring frequently in China.On July 7 this year,more than 20 flights were postponed at Xiaoshan International Airport in Hangzhou,Zhejiang Province,because of a sighting.Whenever such reported sightings occur,Wang Sichao,a research fellow at the Purple Mountain Observatory(PMO) of the Chinese Academy of Sciences(CAS) in Nanjing,Jiangsu Province,is much busier than usual.In ad-dition to studying the sightings,Wang,who started work on UFOs nearly 40 years ago,has to check and reply to mail about UFOs from all across China.Lately,Wang predicted "great events" concerning UFOs were going to come out in China in the next two years.In an interview with Beijing Review,he shared his views and stories with reporter Tang Yuankai.Edited excerpts follow:
文摘Voluntary research organizations are becoming more significant forces in the study of ‘lights in the sky’ something unusual was happening on the quiet, clear night in Hangzhou, Zhejiang Province, on July 7 this year. Because of sightings of an Unidentified Flying Object (UFO), more than 20 flights were postponed for 56 minutes at the city’s Xiaoshan International Airport. Immediately the event was connected with alien spacecraft. Speculations and rumors were everywhere.
文摘非侵入式负荷监测(non-intrusive load monitoring,NILM)技术对于实现智慧用电与管理具有重要意义。针对现有的非侵入式负荷监测方法在高噪声环境下对特征相似电器以及微小负荷变化监测精度不足的难题,提出了一种基于单位力操作视觉变换器的非侵入式负荷监测(non-intrusive load monitoring based on unit force operated vision transformer,UFONILM)模型的非侵入式负荷监测的深度学习框架。UFONILM模型的单位力操作(unit force operated,UFO)模块通过层归一化和一系列卷积层有效地提取和利用了多尺度的时间序列数据,特征。在标准的UK-DALE数据集上进行的实验显示,UFONILM模型在准确性和F1得分上均优于现有方法,特别是在细粒度的负荷监测场景中。研制了基于UFONILM模型的嵌入式系统,实现了边缘计算的非侵入式负荷监测,可实时监测和响应电网中的异常用电行为,如违规充电事件。实验检测证明,UFONILM模型嵌入式非侵入式负荷监测方法在监测效率方面具有显著的提升,具有高效、便捷安装、可扩展等特点。
