地震波传播速度参数贯穿于整个地震勘探过程,对于地震成像至关重要。传统的地震速度建模方法存在计算效率低等问题,本文提出一种基于交互注意力分解融合的地震速度建模网络,即IADMU模型。本文网络提出分解融合卷积(DMUC)和交互注意力模...地震波传播速度参数贯穿于整个地震勘探过程,对于地震成像至关重要。传统的地震速度建模方法存在计算效率低等问题,本文提出一种基于交互注意力分解融合的地震速度建模网络,即IADMU模型。本文网络提出分解融合卷积(DMUC)和交互注意力模块(IAB)这2个组件。原始地震炮记录经过分解融合卷积模块,从全局和局部维度提取其高级特征信息,送入反卷积和交互注意力模块,在跨通道交互的帮助下,预测对应的速度模型。在模拟数据和SEG salt data数据集上进行大量实验,消融实验验证了本文提出的DMUC和IAB的有效性;对比实验结果显示,相比U-Net、Res-UNet和DeepLabV3网络,本文网络在这2种数据集上都有更好的性能,验证了本文所提网络的优越性。展开更多
Autotomy of appendages is a self-protection mechanism in crustaceans,which is defined as the reflexive loss of a limb in response to predation,competition,or other environmental factors.Single-limb injuries were the m...Autotomy of appendages is a self-protection mechanism in crustaceans,which is defined as the reflexive loss of a limb in response to predation,competition,or other environmental factors.Single-limb injuries were the most common among the species surveyed in the present study,and the chelicerae were the most frequently lost appendages.After autotomy,hormones and signaling pathways are altered.Loss of limbs can affect foraging efficiency,although cheliped loss may be compensated by shifting to alternative prey or using both motor and oral appendages.In heterogeneous species,the loss of the major chelae may affect the selectivity of feeding.Autotomy can affect crustacean growth by reducing size increases at molting and altering the timing of ecdysis.In commercial production,removing chelicerae is an effective strategy to reduce cannibalism,and production of soft-shell crabs can be increased via autotomy.After autotomy,a new limb will regrow through regeneration and molting.This process involves the regulation of hormones,regrowth of nerves,and a number of signaling pathways that include the Wnt/β-catenin signaling pathway and transforming growth factorβsignaling pathway.Crustaceans are somewhat different from vertebrates in terms of regeneration.This review provides theoretical guidance about autotomy and regeneration applied in artificial aquaculture,and we offer several suggestions for future research on autotomy and regeneration in crustaceans.展开更多
文摘地震波传播速度参数贯穿于整个地震勘探过程,对于地震成像至关重要。传统的地震速度建模方法存在计算效率低等问题,本文提出一种基于交互注意力分解融合的地震速度建模网络,即IADMU模型。本文网络提出分解融合卷积(DMUC)和交互注意力模块(IAB)这2个组件。原始地震炮记录经过分解融合卷积模块,从全局和局部维度提取其高级特征信息,送入反卷积和交互注意力模块,在跨通道交互的帮助下,预测对应的速度模型。在模拟数据和SEG salt data数据集上进行大量实验,消融实验验证了本文提出的DMUC和IAB的有效性;对比实验结果显示,相比U-Net、Res-UNet和DeepLabV3网络,本文网络在这2种数据集上都有更好的性能,验证了本文所提网络的优越性。
基金funded by the National Natural Science Foundation of China(Nos.32172993,42106104)the Ningbo Provincial Natural Science Foundation of China(No.202003N4181).
文摘Autotomy of appendages is a self-protection mechanism in crustaceans,which is defined as the reflexive loss of a limb in response to predation,competition,or other environmental factors.Single-limb injuries were the most common among the species surveyed in the present study,and the chelicerae were the most frequently lost appendages.After autotomy,hormones and signaling pathways are altered.Loss of limbs can affect foraging efficiency,although cheliped loss may be compensated by shifting to alternative prey or using both motor and oral appendages.In heterogeneous species,the loss of the major chelae may affect the selectivity of feeding.Autotomy can affect crustacean growth by reducing size increases at molting and altering the timing of ecdysis.In commercial production,removing chelicerae is an effective strategy to reduce cannibalism,and production of soft-shell crabs can be increased via autotomy.After autotomy,a new limb will regrow through regeneration and molting.This process involves the regulation of hormones,regrowth of nerves,and a number of signaling pathways that include the Wnt/β-catenin signaling pathway and transforming growth factorβsignaling pathway.Crustaceans are somewhat different from vertebrates in terms of regeneration.This review provides theoretical guidance about autotomy and regeneration applied in artificial aquaculture,and we offer several suggestions for future research on autotomy and regeneration in crustaceans.
