Zolpidem, as an imidazopyridine agent, is a widely prescribed drug among practitioners for short-term treatment of insomnia. Nevertheless, there have been a number of cases associated with the adverse effects of the s...Zolpidem, as an imidazopyridine agent, is a widely prescribed drug among practitioners for short-term treatment of insomnia. Nevertheless, there have been a number of cases associated with the adverse effects of the stated drug recently. Many cases of serious complications induced by high dose of zolpidem have been reported. Further to the existing reports of adverse reactions to zolpidem, throughout the current manuscript, another case of zolpidem-induced loss of consciousness is going to be presented. The case had taken 100 mg of zolpidem and afterwards, went into an unknown status of narcolepsy, faint, seizure or transient coma. Overdosing zolpidem and being affected by its central effects, he performed risky actions such as cooking by a gas oven and eating meal while intoxicated. The current case suggests that zolpidem overdose might contribute to loss of consciousness and exhibition of high-risk behaviors.展开更多
A measurement system for the scattering characteristics of warhead fragments based on high-speed imaging systems offers advantages such as simple deployment,flexible maneuverability,and high spatiotemporal resolution,...A measurement system for the scattering characteristics of warhead fragments based on high-speed imaging systems offers advantages such as simple deployment,flexible maneuverability,and high spatiotemporal resolution,enabling the acquisition of full-process data of the fragment scattering process.However,mismatches between camera frame rates and target velocities can lead to long motion blur tails of high-speed fragment targets,resulting in low signal-to-noise ratios and rendering conventional detection algorithms ineffective in dynamic strong interference testing environments.In this study,we propose a detection framework centered on dynamic strong interference disturbance signal separation and suppression.We introduce a mixture Gaussian model constrained under a joint spatialtemporal-transform domain Dirichlet process,combined with total variation regularization to achieve disturbance signal suppression.Experimental results demonstrate that the proposed disturbance suppression method can be integrated with certain conventional motion target detection tasks,enabling adaptation to real-world data to a certain extent.Moreover,we provide a specific implementation of this process,which achieves a detection rate close to 100%with an approximate 0%false alarm rate in multiple sets of real target field test data.This research effectively advances the development of the field of damage parameter testing.展开更多
遥感图像的目标检测在各领域有着广泛的应用场景,由于遥感图像中检测目标存在形态多变、弱小目标较多以及背景复杂等原因,导致遥感图像在目标检测方面存在检测精度识别不高、模型参数过大等问题。为提升算法对遥感图像目标的检测准确率...遥感图像的目标检测在各领域有着广泛的应用场景,由于遥感图像中检测目标存在形态多变、弱小目标较多以及背景复杂等原因,导致遥感图像在目标检测方面存在检测精度识别不高、模型参数过大等问题。为提升算法对遥感图像目标的检测准确率以及缩减算法模型量,提出了动态聚焦多维注意力检测算法——YOLO-WiseGOD。在YOLOv8n基线网络中使用WIoU(Wise-IoU)构建动态聚焦机制的边界框损失,弱化因几何因素导致的梯度增益泛化能力不足的问题,在协调高低质量锚框竞争力的同时,使之适用于聚焦普通锚框,提高网络模型检测的定位能力。在网络末端融合改进的L-ODConv(Leaky ReLU-Omni-Dimensional Dynamic Convolution)多维注意力机制,避免梯度锯齿问题,在减少模型参数的同时,优化输出特征和卷积权值的调制,提升网络加权特征融合。在主干网络中引入轻量化注意力模块C2FGhostV2,在更好地捕捉输入特征图中的多尺度特征和全局上下文信息的同时,保持较低的参数量和计算复杂度,更好地平衡训练精度和模型量之间的关系。所提算法在遥感数据集NWPU VHR-10(Northwestern Polytechnical University Very High Resolution-10)和RSOD(Remote Sensing Object Detection)上进行实验验证,对比当前主流算法模型YOLOv8n,其平均检测准确率(mean Average Precision,mAP)分别提高了2.0%和2.3%,模型参数量减少4.5%,计算量减少10.9%,能有效提高遥感图像中微小目标的检测精度和实现一定的模型轻量化。展开更多
This paper makes a study of the cause of manufacturing fault,develops the and/or- fault-tree of manufacturing quality fault for MC,and presents a new concept of faint manufacturing quality fault(FMQF)and the decision ...This paper makes a study of the cause of manufacturing fault,develops the and/or- fault-tree of manufacturing quality fault for MC,and presents a new concept of faint manufacturing quality fault(FMQF)and the decision making tree with which the fault of manufacturing system would be found out from FMQF.An approach to identification of FMQF,based on fuzzy set theory,is presented,which can be used for estimating the status of equipment with the deviation of control charts.Based on the study above,an expert system for the flexible manufacturing system's FMQF detection and prediction is built.展开更多
对于一些复杂信号中的弱故障特征信息,以往的两种小波—奇异值分解(Singular value decompositiom,SVD)组合模式的特征提取效果不佳,从小波的频率窗特性出发分析了出现这种问题的原因,进而对复杂信号的奇异值分布规律进行研究,据此提出...对于一些复杂信号中的弱故障特征信息,以往的两种小波—奇异值分解(Singular value decompositiom,SVD)组合模式的特征提取效果不佳,从小波的频率窗特性出发分析了出现这种问题的原因,进而对复杂信号的奇异值分布规律进行研究,据此提出一种新的小波-SVD差分谱组合模式。对原始信号做小波分解得到一系列细节信号后,不再将这些信号简单地排列成矩阵,而是利用每个细节信号构造特定结构的Hankel矩阵,再通过SVD对每个矩阵做正交化分解,并利用奇异值差分谱来选择特征奇异值进行SVD重构,由此实现对弱故障特征信息的提取。对一个轴承振动信号的处理结果证实该方法对复杂信号中的弱故障特征信息具有优良的提取效果,其获得的故障特征波形非常清晰,克服了以往小波-SVD组合模式对弱故障特征提取效果不佳的缺陷。展开更多
文摘Zolpidem, as an imidazopyridine agent, is a widely prescribed drug among practitioners for short-term treatment of insomnia. Nevertheless, there have been a number of cases associated with the adverse effects of the stated drug recently. Many cases of serious complications induced by high dose of zolpidem have been reported. Further to the existing reports of adverse reactions to zolpidem, throughout the current manuscript, another case of zolpidem-induced loss of consciousness is going to be presented. The case had taken 100 mg of zolpidem and afterwards, went into an unknown status of narcolepsy, faint, seizure or transient coma. Overdosing zolpidem and being affected by its central effects, he performed risky actions such as cooking by a gas oven and eating meal while intoxicated. The current case suggests that zolpidem overdose might contribute to loss of consciousness and exhibition of high-risk behaviors.
文摘A measurement system for the scattering characteristics of warhead fragments based on high-speed imaging systems offers advantages such as simple deployment,flexible maneuverability,and high spatiotemporal resolution,enabling the acquisition of full-process data of the fragment scattering process.However,mismatches between camera frame rates and target velocities can lead to long motion blur tails of high-speed fragment targets,resulting in low signal-to-noise ratios and rendering conventional detection algorithms ineffective in dynamic strong interference testing environments.In this study,we propose a detection framework centered on dynamic strong interference disturbance signal separation and suppression.We introduce a mixture Gaussian model constrained under a joint spatialtemporal-transform domain Dirichlet process,combined with total variation regularization to achieve disturbance signal suppression.Experimental results demonstrate that the proposed disturbance suppression method can be integrated with certain conventional motion target detection tasks,enabling adaptation to real-world data to a certain extent.Moreover,we provide a specific implementation of this process,which achieves a detection rate close to 100%with an approximate 0%false alarm rate in multiple sets of real target field test data.This research effectively advances the development of the field of damage parameter testing.
文摘遥感图像的目标检测在各领域有着广泛的应用场景,由于遥感图像中检测目标存在形态多变、弱小目标较多以及背景复杂等原因,导致遥感图像在目标检测方面存在检测精度识别不高、模型参数过大等问题。为提升算法对遥感图像目标的检测准确率以及缩减算法模型量,提出了动态聚焦多维注意力检测算法——YOLO-WiseGOD。在YOLOv8n基线网络中使用WIoU(Wise-IoU)构建动态聚焦机制的边界框损失,弱化因几何因素导致的梯度增益泛化能力不足的问题,在协调高低质量锚框竞争力的同时,使之适用于聚焦普通锚框,提高网络模型检测的定位能力。在网络末端融合改进的L-ODConv(Leaky ReLU-Omni-Dimensional Dynamic Convolution)多维注意力机制,避免梯度锯齿问题,在减少模型参数的同时,优化输出特征和卷积权值的调制,提升网络加权特征融合。在主干网络中引入轻量化注意力模块C2FGhostV2,在更好地捕捉输入特征图中的多尺度特征和全局上下文信息的同时,保持较低的参数量和计算复杂度,更好地平衡训练精度和模型量之间的关系。所提算法在遥感数据集NWPU VHR-10(Northwestern Polytechnical University Very High Resolution-10)和RSOD(Remote Sensing Object Detection)上进行实验验证,对比当前主流算法模型YOLOv8n,其平均检测准确率(mean Average Precision,mAP)分别提高了2.0%和2.3%,模型参数量减少4.5%,计算量减少10.9%,能有效提高遥感图像中微小目标的检测精度和实现一定的模型轻量化。
文摘This paper makes a study of the cause of manufacturing fault,develops the and/or- fault-tree of manufacturing quality fault for MC,and presents a new concept of faint manufacturing quality fault(FMQF)and the decision making tree with which the fault of manufacturing system would be found out from FMQF.An approach to identification of FMQF,based on fuzzy set theory,is presented,which can be used for estimating the status of equipment with the deviation of control charts.Based on the study above,an expert system for the flexible manufacturing system's FMQF detection and prediction is built.
文摘对于一些复杂信号中的弱故障特征信息,以往的两种小波—奇异值分解(Singular value decompositiom,SVD)组合模式的特征提取效果不佳,从小波的频率窗特性出发分析了出现这种问题的原因,进而对复杂信号的奇异值分布规律进行研究,据此提出一种新的小波-SVD差分谱组合模式。对原始信号做小波分解得到一系列细节信号后,不再将这些信号简单地排列成矩阵,而是利用每个细节信号构造特定结构的Hankel矩阵,再通过SVD对每个矩阵做正交化分解,并利用奇异值差分谱来选择特征奇异值进行SVD重构,由此实现对弱故障特征信息的提取。对一个轴承振动信号的处理结果证实该方法对复杂信号中的弱故障特征信息具有优良的提取效果,其获得的故障特征波形非常清晰,克服了以往小波-SVD组合模式对弱故障特征提取效果不佳的缺陷。
