Structure evaluation is critical to in silico 3-dimensional structure predictions for biomacromolecules such as proteins and RNAs.For proteins,structure evaluation has been paid attention over three decades along with...Structure evaluation is critical to in silico 3-dimensional structure predictions for biomacromolecules such as proteins and RNAs.For proteins,structure evaluation has been paid attention over three decades along with protein folding problem,and statistical potentials have been shown to be effective and efficient in protein structure prediction and evaluation.In recent two decades,RNA folding problem has attracted much attention and several statistical potentials have been developed for RNA structure evaluation,partially with the aid of the progress in protein structure prediction.In this review,we will firstly give a brief overview on the existing statistical potentials for protein structure evaluation.Afterwards,we will introduce the recently developed statistical potentials for RNA structure evaluation.Finally,we will emphasize the perspective on developing new statistical potentials for RNAs in the near future.展开更多
随着电网的不断扩展,电力系统过电压对输电线路和电气设备造成的危害日益严重,研究电网过电压信号对有效遏制过电压和完善系统绝缘具有关键意义。以某330 k V变电站为例,基于ATP-EMTP构建过电压仿真模型,取得单相接地、空载变压器合闸...随着电网的不断扩展,电力系统过电压对输电线路和电气设备造成的危害日益严重,研究电网过电压信号对有效遏制过电压和完善系统绝缘具有关键意义。以某330 k V变电站为例,基于ATP-EMTP构建过电压仿真模型,取得单相接地、空载变压器合闸、电容器组合闸、空载线路合闸、直击雷以及感应雷6种典型过电压波形;然后采用时域与小波分析法提取电压有效值、陡度、小波能量等14个具有良好差异性的特征量;构造了基于SVM的过电压种类识别结构,用以对过电压特征量在每层SVM中进行选择。仿真计算结果表明,上述6种过电压平均识别率为87.9%,识别速率约1 s。该方法识别精确率高,运行速度快,可满足对电网过电压自动识别的工程要求。展开更多
基金Project supported by the National Natural Science Foundation of China(Grant Nos.11774272 and 11575128)。
文摘Structure evaluation is critical to in silico 3-dimensional structure predictions for biomacromolecules such as proteins and RNAs.For proteins,structure evaluation has been paid attention over three decades along with protein folding problem,and statistical potentials have been shown to be effective and efficient in protein structure prediction and evaluation.In recent two decades,RNA folding problem has attracted much attention and several statistical potentials have been developed for RNA structure evaluation,partially with the aid of the progress in protein structure prediction.In this review,we will firstly give a brief overview on the existing statistical potentials for protein structure evaluation.Afterwards,we will introduce the recently developed statistical potentials for RNA structure evaluation.Finally,we will emphasize the perspective on developing new statistical potentials for RNAs in the near future.
文摘随着电网的不断扩展,电力系统过电压对输电线路和电气设备造成的危害日益严重,研究电网过电压信号对有效遏制过电压和完善系统绝缘具有关键意义。以某330 k V变电站为例,基于ATP-EMTP构建过电压仿真模型,取得单相接地、空载变压器合闸、电容器组合闸、空载线路合闸、直击雷以及感应雷6种典型过电压波形;然后采用时域与小波分析法提取电压有效值、陡度、小波能量等14个具有良好差异性的特征量;构造了基于SVM的过电压种类识别结构,用以对过电压特征量在每层SVM中进行选择。仿真计算结果表明,上述6种过电压平均识别率为87.9%,识别速率约1 s。该方法识别精确率高,运行速度快,可满足对电网过电压自动识别的工程要求。
