基于SRTM DEM 30m数据和ArcGIS软件,提取台湾岛的水系和流域盆地,计算得到台湾岛的地貌参数(坡度、地形起伏度和面积-高程积分(HI)值),并分析台湾岛水系分布对活动断裂的响应情况,得到以下结论:1)台湾岛河流受构造活动控制,以中央山脉...基于SRTM DEM 30m数据和ArcGIS软件,提取台湾岛的水系和流域盆地,计算得到台湾岛的地貌参数(坡度、地形起伏度和面积-高程积分(HI)值),并分析台湾岛水系分布对活动断裂的响应情况,得到以下结论:1)台湾岛河流受构造活动控制,以中央山脉为分水岭,西侧河流的南部水系为纵向流动,北部水系为横向流动,中央山脉以东的河流均为东西流向;2)台湾岛的HI值整体上呈现中间高、两边低的趋势,与海拔大体上呈正相关关系,沿逆冲断层边界,不同构造地质单元的HI值东西两侧差异明显;3)HI值可以反映台湾岛造山带的生成时序,流域盆地受构造抬升运动影响时间越长,HI值越大。展开更多
Mainstream media play a crucial role in constructing the cultural memory of a city.This study used 319 short videos released by“Hi Chengdu,”a new media product of Chengdu Radio and Television,as samples.Based on the...Mainstream media play a crucial role in constructing the cultural memory of a city.This study used 319 short videos released by“Hi Chengdu,”a new media product of Chengdu Radio and Television,as samples.Based on the grounded theory,a research framework encompassing“content,technology,and discourse”was established to explore the paths through which mainstream media construct the cultural memory.Regarding content,this paper emphasized temporal and spatial contexts and urban spaces,delving deep into the themes of the cultural memory and vehicles for it.In terms of technology,this paper discussed the practice of leveraging audio/visual-mode discourse to stitch together the impressions of a city and evoke emotional resonance to create a“flow”of memory.As for discourse,this paper looked at the performance of a communication ritual to frame concepts and shape urban identity.It is essential to break free from conventional thinking and leverage local culture as the primary driving force to further boost a city’s productivity,in order to excel in cultural communication.展开更多
针对当前光电跟踪系统在复杂背景下对目标跟丢的情况,设计了一款应用在交通执法领域且适用于复杂背景的光电跟踪系统。该系统采用Hi3516A处理器完成对视频图像的获取、处理,保存成H.264或H.265码流文件,通过无线WIFI和实时流传输协议RTS...针对当前光电跟踪系统在复杂背景下对目标跟丢的情况,设计了一款应用在交通执法领域且适用于复杂背景的光电跟踪系统。该系统采用Hi3516A处理器完成对视频图像的获取、处理,保存成H.264或H.265码流文件,通过无线WIFI和实时流传输协议RTSP(Real Time Streaming Protocol)将码流文件实时传输到PC端进行显示;同时,应用模糊系统对KCF跟踪算法进行改进,实现滤波模型的自适应更新。此外,该系统基于GD32F407处理器采用PD控制算法实现俯仰和航向双自由度的控制,使目标始终保持在视野的中心。实验结果表明,应用改进后的跟踪算法使得该系统能够完成在复杂背景下对目标的准确跟踪,且运行速度在每秒30帧左右。展开更多
Distribution feeders carry and supply power to industrial,commercial and residential loads from the point where sub-transmission(33 kV level)ends after stepping down to suitable voltages,such as 11 kV and further down...Distribution feeders carry and supply power to industrial,commercial and residential loads from the point where sub-transmission(33 kV level)ends after stepping down to suitable voltages,such as 11 kV and further down to 400/230 V.In recent times,high impedance(Hi-Z)faults on distribution systems are creating unique challenges to utilities both from operational and safety perspectives.Most of these Hi-Z faults occur at dis-tribution voltages of 15 kV or below,with the problem being worse at lower voltages.Hi-Z fault detection technologies emerged and were developed and incorporated on embedded platforms,such as relays,reclosers and sensors,which protect and monitor distribution systems.Although these technologies can detect Hi-Z fault on feeders,most of them cannot identify the exact location of the fault.Specifically,there is no solution available in literature for detecting Hi-Z fault location on low voltage(LV)circuits like 3-phase 4-wire 400 V distribution network.In this paper,we introduce a novel and a unique algorithm to identify the location of Hi-Z faults using proposed smart metres IoT data-based distribution system load flow and digital twin model representation of the network.Furthermore,a case study on the standard 33 bus LV system clearly depicts the func-tionality of the proposed algorithm.展开更多
文摘基于SRTM DEM 30m数据和ArcGIS软件,提取台湾岛的水系和流域盆地,计算得到台湾岛的地貌参数(坡度、地形起伏度和面积-高程积分(HI)值),并分析台湾岛水系分布对活动断裂的响应情况,得到以下结论:1)台湾岛河流受构造活动控制,以中央山脉为分水岭,西侧河流的南部水系为纵向流动,北部水系为横向流动,中央山脉以东的河流均为东西流向;2)台湾岛的HI值整体上呈现中间高、两边低的趋势,与海拔大体上呈正相关关系,沿逆冲断层边界,不同构造地质单元的HI值东西两侧差异明显;3)HI值可以反映台湾岛造山带的生成时序,流域盆地受构造抬升运动影响时间越长,HI值越大。
文摘Mainstream media play a crucial role in constructing the cultural memory of a city.This study used 319 short videos released by“Hi Chengdu,”a new media product of Chengdu Radio and Television,as samples.Based on the grounded theory,a research framework encompassing“content,technology,and discourse”was established to explore the paths through which mainstream media construct the cultural memory.Regarding content,this paper emphasized temporal and spatial contexts and urban spaces,delving deep into the themes of the cultural memory and vehicles for it.In terms of technology,this paper discussed the practice of leveraging audio/visual-mode discourse to stitch together the impressions of a city and evoke emotional resonance to create a“flow”of memory.As for discourse,this paper looked at the performance of a communication ritual to frame concepts and shape urban identity.It is essential to break free from conventional thinking and leverage local culture as the primary driving force to further boost a city’s productivity,in order to excel in cultural communication.
文摘针对当前光电跟踪系统在复杂背景下对目标跟丢的情况,设计了一款应用在交通执法领域且适用于复杂背景的光电跟踪系统。该系统采用Hi3516A处理器完成对视频图像的获取、处理,保存成H.264或H.265码流文件,通过无线WIFI和实时流传输协议RTSP(Real Time Streaming Protocol)将码流文件实时传输到PC端进行显示;同时,应用模糊系统对KCF跟踪算法进行改进,实现滤波模型的自适应更新。此外,该系统基于GD32F407处理器采用PD控制算法实现俯仰和航向双自由度的控制,使目标始终保持在视野的中心。实验结果表明,应用改进后的跟踪算法使得该系统能够完成在复杂背景下对目标的准确跟踪,且运行速度在每秒30帧左右。
文摘Distribution feeders carry and supply power to industrial,commercial and residential loads from the point where sub-transmission(33 kV level)ends after stepping down to suitable voltages,such as 11 kV and further down to 400/230 V.In recent times,high impedance(Hi-Z)faults on distribution systems are creating unique challenges to utilities both from operational and safety perspectives.Most of these Hi-Z faults occur at dis-tribution voltages of 15 kV or below,with the problem being worse at lower voltages.Hi-Z fault detection technologies emerged and were developed and incorporated on embedded platforms,such as relays,reclosers and sensors,which protect and monitor distribution systems.Although these technologies can detect Hi-Z fault on feeders,most of them cannot identify the exact location of the fault.Specifically,there is no solution available in literature for detecting Hi-Z fault location on low voltage(LV)circuits like 3-phase 4-wire 400 V distribution network.In this paper,we introduce a novel and a unique algorithm to identify the location of Hi-Z faults using proposed smart metres IoT data-based distribution system load flow and digital twin model representation of the network.Furthermore,a case study on the standard 33 bus LV system clearly depicts the func-tionality of the proposed algorithm.
