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Progress and Achievements of Multi-sensor Fusion Navigation in China during 2019—2023
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作者 Xingxing LI Xiaohong ZHANG +12 位作者 Xiaoji NIU Jian WANG Ling PEI fangwen yu Hongjuan ZHANG Cheng YANG Zhouzheng GAO Quan ZHANG Feng ZHU Weisong WEN Tuan LI Jianchi LIAO Xin LI 《Journal of Geodesy and Geoinformation Science》 CSCD 2023年第3期102-114,共13页
Global Navigation Satellite System(GNSS)can provide all-weather,all-time,high-precision positioning,navigation and timing services,which plays an important role in national security,national economy,public life and ot... Global Navigation Satellite System(GNSS)can provide all-weather,all-time,high-precision positioning,navigation and timing services,which plays an important role in national security,national economy,public life and other aspects.However,in environments with limited satellite signals such as urban canyons,tunnels,and indoor spaces,it is difficult to provide accurate and reliable positioning services only by satellite navigation.Multi-source sensor integrated navigation can effectively overcome the limitations of single-sensor navigation through the fusion of different types of sensor data such as Inertial Measurement Unit(IMU),vision sensor,and LiDAR,and provide more accurate,stable and robust navigation information in complex environments.We summarizes the research status of multi-source sensor integrated navigation technology,and focuses on the representative innovations and applications of integrated navigation and positioning technology by major domestic scientific research institutions in China during 2019—2023. 展开更多
关键词 Simultaneous Localization And Mapping(SLAM) integrated navigation multi-sensor fusion
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冲突控制中比例效应的理论争议与进展
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作者 余方文 王祥鹏 《心理学进展》 2017年第1期88-95,共8页
冲突控制在过去几十年里主要关注于研究冲突适应现象的行为表现和神经机制,却忽略了另一个影响冲突解决的重要方面——任务背景。比例效应是指冲突效应的大小会随着不一致试次比例的升高而减小的现象,其反映了执行控制根据不同的任务背... 冲突控制在过去几十年里主要关注于研究冲突适应现象的行为表现和神经机制,却忽略了另一个影响冲突解决的重要方面——任务背景。比例效应是指冲突效应的大小会随着不一致试次比例的升高而减小的现象,其反映了执行控制根据不同的任务背景进行自上而下调整的能力。本文梳理了比例效应相关研究,总结了有关比例效应的主流理论解释。关于比例效应争议主要存在于两方面:比例效应是否由认知控制主导;以及来源于LWPC还是ISPC。借助于行为和神经影响的研究证据,作者认为比例效应反映了不同任务背景下的冲突控制加工,并在此基础上提出从认知策略灵活性角度来解释比例效应的可能性。 展开更多
关键词 冲突控制 比例效应 神经机制 认知控制策略 灵活性
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Accurate and efficient floor localization with scalable spiking graph neural networks
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作者 Fuqiang Gu Fangming Guo +6 位作者 fangwen yu Xianlei Long Chao Chen Kai Liu Xuke Hu Jianga Shang Songtao Guo 《Satellite Navigation》 SCIE EI CSCD 2024年第1期191-206,共16页
Floor localization is crucial for various applications such as emergency response and rescue,indoor positioning,and recommender systems.The existing floor localization systems have many drawbacks,like low accuracy,poo... Floor localization is crucial for various applications such as emergency response and rescue,indoor positioning,and recommender systems.The existing floor localization systems have many drawbacks,like low accuracy,poor scalability,and high computational costs.In this paper,we first frame the problem of floor localization as one of learning node embeddings to predict the floor label of a subgraph.Then,we introduce FloorLocator,a deep learning-based method for floor localization that integrates efficient spiking neural networks with powerful graph neural networks.This approach offers high accuracy,easy scalability to new buildings,and computational efficiency.Experimental results on using several public datasets demonstrate that FloorLocator outperforms state-of-the-art methods.Notably,in building B0,FloorLocator achieved recognition accuracy of 95.9%,exceeding state-of-the-art methods by at least 10%.In building B1,it reached an accuracy of 82.1%,surpassing the latest methods by at least 4%.These results indicate FloorLocator’s superiority in multi-floor building environment localization. 展开更多
关键词 Indoor positioning Deep learning Floor localization Spiking neural networks Graph neural networks
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Associations between levels of Internet Gaming Disorder symptoms and striatal morphology–replication and associations with social anxiety 被引量:1
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作者 Benjamin Klugah-Brown Xinqi Zhou +9 位作者 LanWang Xianyang Gan Ran Zhang Xiqin Liu Xinwei Song Weihua Zhao Bharat B.Biswal fangwen yu Christian Montag Benjamin Becker 《Psychoradiology》 2022年第4期207-215,共9页
Background:Brain structural alterations of the striatum have been frequently observed in internet gaming disorder(IGD);however,the replicability of the results and the associations with social-affective dysregulations... Background:Brain structural alterations of the striatum have been frequently observed in internet gaming disorder(IGD);however,the replicability of the results and the associations with social-affective dysregulations such as social anxiety remain to be determined.Methods:The present study combined a dimensional neuroimaging approach with both voxel-wise and data-driven multivariate approaches to(i)replicate our previous results on a negative association between IGD symptom load(assessed by the Internet Gaming Disorder Scale-Short Form)and striatal volume,(ii)extend these findings to female individuals,and(iii)employ multivariate and mediation models to determine common brain structural representations of IGD and social anxiety(assessed by the Liebowitz Social Anxiety Scale).Results:In line with the original study,the voxel-wise analyses revealed a negative association between IGD and volumes of the bilateral caudate.Going beyond the earlier study investigating only male participants,the present study demonstrates that the association in the right caudate was comparable in both the male and the female subsamples.Further examination using themultivariate approach revealed regionally different associations between IGD and social anxiety with striatal density representations in the dorsal striatum(caudate)and ventral striatum(nucleus accumbens).Higher levels of IGD were associated with higher social anxiety and the association was critically mediated by the multivariate neurostructural density variations of the striatum.Conclusions:Altered striatal volumes may represent a replicable and generalizable marker of IGD symptoms.However,exploratory multivariate analyses revealed more complex and regional specific associations between striatal density and IGD as well as social anxiety symptoms.Variations in both tendencies may share common structural brain representations,which mediate the association between increased IGD and social anxiety. 展开更多
关键词 internet gaming disorder social anxiety source-based morphometry gray matter MRI REPLICATION
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