Every year, around the world, between 250,000 and 500,000 people suffer a spinal cord injury(SCI). SCI is a devastating medical condition that arises from trauma or disease-induced damage to the spinal cord, disruptin...Every year, around the world, between 250,000 and 500,000 people suffer a spinal cord injury(SCI). SCI is a devastating medical condition that arises from trauma or disease-induced damage to the spinal cord, disrupting the neural connections that allow communication between the brain and the rest of the body, which results in varying degrees of motor and sensory impairment. Disconnection in the spinal tracts is an irreversible condition owing to the poor capacity for spontaneous axonal regeneration in the affected neurons.展开更多
During the use of robotics in applications such as antiterrorism or combat,a motion-constrained pursuer vehicle,such as a Dubins unmanned surface vehicle(USV),must get close enough(within a prescribed zero or positive...During the use of robotics in applications such as antiterrorism or combat,a motion-constrained pursuer vehicle,such as a Dubins unmanned surface vehicle(USV),must get close enough(within a prescribed zero or positive distance)to a moving target as quickly as possible,resulting in the extended minimum-time intercept problem(EMTIP).Existing research has primarily focused on the zero-distance intercept problem,MTIP,establishing the necessary or sufficient conditions for MTIP optimality,and utilizing analytic algorithms,such as root-finding algorithms,to calculate the optimal solutions.However,these approaches depend heavily on the properties of the analytic algorithm,making them inapplicable when problem settings change,such as in the case of a positive effective range or complicated target motions outside uniform rectilinear motion.In this study,an approach employing a high-accuracy and quality-guaranteed mixed-integer piecewise-linear program(QG-PWL)is proposed for the EMTIP.This program can accommodate different effective interception ranges and complicated target motions(variable velocity or complicated trajectories).The high accuracy and quality guarantees of QG-PWL originate from elegant strategies such as piecewise linearization and other developed operation strategies.The approximate error in the intercept path length is proved to be bounded to h^(2)/(4√2),where h is the piecewise length.展开更多
随着网络业务的快速发展和网络技术的快速演进,人们对网络运维的要求也随之提高。当下的网络运维存在自动化程度不足、人才短缺,运维一致性差等问题。AI运维机器人基于NLP(Natural Language Processing,自然语言处理)技术,为运维人员提...随着网络业务的快速发展和网络技术的快速演进,人们对网络运维的要求也随之提高。当下的网络运维存在自动化程度不足、人才短缺,运维一致性差等问题。AI运维机器人基于NLP(Natural Language Processing,自然语言处理)技术,为运维人员提供极简的“对话式”运维操作,智能识别运维意图和操作对象,高效自动化执行任务,有效降低了运维人员的技术门槛,替代烦琐人工操作,有效提升了运维效率,实现了网络运维的提质增效。展开更多
为解决自然语言数据处理模型进行数据处理时存在效果差、资源消耗大等问题,提出一种基于多尺度特征提取和注意力机制的融合算法。通过不同尺度的特征数据提取,并在特征图上应用加权算法,从而增强对某些特定尺度特征的关注,并基于该融合...为解决自然语言数据处理模型进行数据处理时存在效果差、资源消耗大等问题,提出一种基于多尺度特征提取和注意力机制的融合算法。通过不同尺度的特征数据提取,并在特征图上应用加权算法,从而增强对某些特定尺度特征的关注,并基于该融合算法对自然语言数据处理模型进行优化。仿真实验的结果表明:该融合算法特征提取效果较好,显著提升了计算机进行数据处理的各项能力。将优化后的自然语言处理(natural language processing,NLP)数据处理模型与CSAMT数据处理模型、BETG数据处理模型和优化前的NLP数据处理模型的性能进行对比可知:经过CBAM-MS-CNN优化的NLP数据处理模型的各项性能均优于其他模型。研究结果表明:该融合算法可以满足电子化移交流程中非结构化数据管理领域中的高可靠性、智能处理等业务需求,能提升数据处理效率和数据质量,减少人工录入数据和人工复核数据的工作量。展开更多
基金financially supported by Ministerio de Ciencia e Innovación projects SAF2017-82736-C2-1-R to MTMFin Universidad Autónoma de Madrid and by Fundación Universidad Francisco de Vitoria to JS+2 种基金a predoctoral scholarship from Fundación Universidad Francisco de Vitoriafinancial support from a 6-month contract from Universidad Autónoma de Madrida 3-month contract from the School of Medicine of Universidad Francisco de Vitoria。
文摘Every year, around the world, between 250,000 and 500,000 people suffer a spinal cord injury(SCI). SCI is a devastating medical condition that arises from trauma or disease-induced damage to the spinal cord, disrupting the neural connections that allow communication between the brain and the rest of the body, which results in varying degrees of motor and sensory impairment. Disconnection in the spinal tracts is an irreversible condition owing to the poor capacity for spontaneous axonal regeneration in the affected neurons.
基金supported by the National Natural Sci‐ence Foundation of China(Grant No.62306325)。
文摘During the use of robotics in applications such as antiterrorism or combat,a motion-constrained pursuer vehicle,such as a Dubins unmanned surface vehicle(USV),must get close enough(within a prescribed zero or positive distance)to a moving target as quickly as possible,resulting in the extended minimum-time intercept problem(EMTIP).Existing research has primarily focused on the zero-distance intercept problem,MTIP,establishing the necessary or sufficient conditions for MTIP optimality,and utilizing analytic algorithms,such as root-finding algorithms,to calculate the optimal solutions.However,these approaches depend heavily on the properties of the analytic algorithm,making them inapplicable when problem settings change,such as in the case of a positive effective range or complicated target motions outside uniform rectilinear motion.In this study,an approach employing a high-accuracy and quality-guaranteed mixed-integer piecewise-linear program(QG-PWL)is proposed for the EMTIP.This program can accommodate different effective interception ranges and complicated target motions(variable velocity or complicated trajectories).The high accuracy and quality guarantees of QG-PWL originate from elegant strategies such as piecewise linearization and other developed operation strategies.The approximate error in the intercept path length is proved to be bounded to h^(2)/(4√2),where h is the piecewise length.
文摘随着网络业务的快速发展和网络技术的快速演进,人们对网络运维的要求也随之提高。当下的网络运维存在自动化程度不足、人才短缺,运维一致性差等问题。AI运维机器人基于NLP(Natural Language Processing,自然语言处理)技术,为运维人员提供极简的“对话式”运维操作,智能识别运维意图和操作对象,高效自动化执行任务,有效降低了运维人员的技术门槛,替代烦琐人工操作,有效提升了运维效率,实现了网络运维的提质增效。
文摘为解决自然语言数据处理模型进行数据处理时存在效果差、资源消耗大等问题,提出一种基于多尺度特征提取和注意力机制的融合算法。通过不同尺度的特征数据提取,并在特征图上应用加权算法,从而增强对某些特定尺度特征的关注,并基于该融合算法对自然语言数据处理模型进行优化。仿真实验的结果表明:该融合算法特征提取效果较好,显著提升了计算机进行数据处理的各项能力。将优化后的自然语言处理(natural language processing,NLP)数据处理模型与CSAMT数据处理模型、BETG数据处理模型和优化前的NLP数据处理模型的性能进行对比可知:经过CBAM-MS-CNN优化的NLP数据处理模型的各项性能均优于其他模型。研究结果表明:该融合算法可以满足电子化移交流程中非结构化数据管理领域中的高可靠性、智能处理等业务需求,能提升数据处理效率和数据质量,减少人工录入数据和人工复核数据的工作量。
