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Reshaping the Cortical Connectivity Gradient by Long-Term Cognitive Training During Development

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Neuroscience Bulletin 2024年第1期40卷 50-64页

作者： Tianyong Xu Yunying Wu Yi Zhang Xi-Nian Zuo Feiyan chen changsong Zhou Bio-X Laboratory School of PhysicsZhejiang UniversityHangzhou 310027China Qiushi Academy for Advanced Studies Zhejiang UniversityHangzhou 310027China State Key Laboratory of Modern Optical Instrumentation College of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China State Key Laboratory of Cognitive Neuroscience and Learning Bejing Normal UniversityBeijing 100875China Developmental Population Neuroscience Research Center IDG/McGovern Institute for Brain ResearchBeijing Normal UniversityBeijing 100875China Zhejiang Province Key Laboratory of Quantum Technology and Devices Zhejiang UniversityHangzhou 310027China Department of Physics Centre for Nonlinear Studies and Beijing-Hong Kong-Singapore Joint Centre for Nonlinear and Complex Systems(Hong Kong)Institute of Computational and Theoretical StudiesHong Kong Baptist UniversityHong Kong 999077China

The organization of the brain follows a topologi-cal hierarchy that changes dynamically during development.However,it remains unknown whether and how cognitive training administered over multiple years during develop-ment can modify this hierarchical topology.By measuring the brain and behavior of school children who had carried out abacus-based mental calculation(AMC)training for five years(starting from 7 years to 12 years old)in pre-training and post-training,we revealed the reshaping effect of long-term AMC intervention during development on the brain hierarchical topology.We observed the development-induced emergence of the default network,AMC training-promoted shifting,and regional changes in cortical gradi-ents.Moreover,the training-induced gradient changes were located in visual and somatomotor areas in association with the visuospatial/motor-imagery strategy.We found that gradient-based features can predict the math ability within groups.Our findings provide novel insights into the dynamic nature of network recruitment impacted by long-term cognitive training during development.

关键词： Connectivity gradient Cognitive training Development Neural plasticity Abacus-based mental calculation

An improved particle filter indoor fusion positioning approach based on Wi-Fi/PDR/geomagnetic field

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Defence Technology（防务技术） 2024年第2期32卷 443-458页

作者： Tianfa Wang Litao Han Qiaoli Kong Zeyu Li changsong Li Jingwei Han Qi Bai Yanfei chen College of Geodesy and Geomatics Shandong University of Science and TechnologyQingdao266590China Key Laboratory of Geomatics and Digital Technology of Shandong Province Shandong University of Science and TechnologyQingdao266590China

The existing indoor fusion positioning methods based on Pedestrian Dead Reckoning(PDR)and geomagnetic technology have the problems of large initial position error,low sensor accuracy,and geomagnetic mismatch.In this study,a novel indoor fusion positioning approach based on the improved particle filter algorithm by geomagnetic iterative matching is proposed,where Wi-Fi,PDR,and geomagnetic signals are integrated to improve indoor positioning performances.One important contribution is that geomagnetic iterative matching is firstly proposed based on the particle filter algorithm.During the positioning process,an iterative window and a constraint window are introduced to limit the particle generation range and the geomagnetic matching range respectively.The position is corrected several times based on geomagnetic iterative matching in the location correction stage when the pedestrian movement is detected,which made up for the shortage of only one time of geomagnetic correction in the existing particle filter algorithm.In addition,this study also proposes a real-time step detection algorithm based on multi-threshold constraints to judge whether pedestrians are moving,which satisfies the real-time requirement of our fusion positioning approach.Through experimental verification,the average positioning accuracy of the proposed approach reaches 1.59 m,which improves 33.2%compared with the existing particle filter fusion positioning algorithms.

关键词： Fusion positioning Particle filter Geomagnetic iterative matching Iterative window Constraint window

Key Management for Outsourced Data Security

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Wuhan University Journal of Natural Sciences 2014年第5期19卷 449-454页

作者： PEI Bei chen changsong WAN Changsheng The Third Research Institute of Ministry of Public Security School of Information Science and Engineering Southeast University

This paper analyzes the efficiency and security of bi- linear-map-based schemes and brings about an AAA based publicly auditable scheme for cloud computing, which is much more efficient. In this scheme, a trust model including four entities is designed to provide both integrity and confidentiality protection. The proposed scheme can be proved to achieve the security goals that no cheating cloud server can pass the auditing without storing users＇ data intact. The efficiency of the proposal is evaluated by analyzing the fulfillment of the design goals, including the computation cost, communication cost and storage cost of our scheme. This light weight publicly auditable Proof-of-storage scheme achieves security goals perfectly, and has an excellent efficiency performance superior to the current bilinear-map-based publicly auditable Proof-of-storage scheme.

关键词： cloud computing malicious cloud server key management

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广西沃柑栽培技术要点

南方农业 2024年第10期18卷 45-47页

作者：陈昌松武宣县农业农村局广西武宣545900

广西作为我国沃柑主要产区,拥有得天独厚的气候和资源条件。为提高沃柑产量与品质,推动沃柑产业的可持续发展,概述广西沃柑分布及资源现状,从选址及土壤管理、繁殖、密植、果实薄皮化等方面探讨沃柑栽培技术要点,并举例分析栽培技术的... 详细信息

广西作为我国沃柑主要产区,拥有得天独厚的气候和资源条件。为提高沃柑产量与品质,推动沃柑产业的可持续发展,概述广西沃柑分布及资源现状,从选址及土壤管理、繁殖、密植、果实薄皮化等方面探讨沃柑栽培技术要点,并举例分析栽培技术的应用成效。

关键词：沃柑栽培技术病虫害防治广西

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马克思恩格斯工业化理论对推进新型工业化的当代启示

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中共成都市委党校学报 2024年第2期 43-53,110页

作者：陈程万长松江南大学马克思主义学院江苏无锡214122

中国式现代化创造了人类文明新形态,以中国式现代化全面推进中华民族伟大复兴,必须坚持推进新型工业化,实现“数实深度融合”,建设现代化产业体系,加快形成新质生产力,实现高质量发展。中国共产党领导下的新型工业化实践对马克思恩格斯... 详细信息

中国式现代化创造了人类文明新形态,以中国式现代化全面推进中华民族伟大复兴,必须坚持推进新型工业化,实现“数实深度融合”,建设现代化产业体系,加快形成新质生产力,实现高质量发展。中国共产党领导下的新型工业化实践对马克思恩格斯工业化理论的当代发展做出了原创性贡献,是马克思恩格斯工业化理论中蕴含的科技生产力思想、生态理念和跨越式发展论述的现实展开。通过梳理马克思恩格斯工业化理论、新型工业化与中国式现代化之间的内在联系和逻辑进路,能让我们在新征程上更好地解放和发展生产力。

关键词：工业化理论新型工业化中国式现代化新质生产力现代化产业体系

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中国共产党科技思想的历史演变与实践研究

燕山大学学报（哲学社会科学版） 2024年第2期25卷 85-91页

作者：万长松陈程江南大学马克思主义学院江苏无锡214122

以“科技立国”为目标的毛泽东科技思想、以“科教兴国”为指引的邓小平、江泽民、胡锦涛科技思想和以“科技强国”为旨归的习近平科技创新思想,共同构成中国共产党科技思想体系的基本内容。在中国共产党科技思想历史演变中形成了坚持... 详细信息

以“科技立国”为目标的毛泽东科技思想、以“科教兴国”为指引的邓小平、江泽民、胡锦涛科技思想和以“科技强国”为旨归的习近平科技创新思想,共同构成中国共产党科技思想体系的基本内容。在中国共产党科技思想历史演变中形成了坚持党领导科技工作的“科学性”、坚持科技创新与社会发展紧密结合、坚持独立自主和以人为本地发展科技的历史经验,探索出以进入创新型国家前列为目标导向、以实现科技自立自强为根本要求、以注重发挥人民群众首创精神为关键依托、以营造全社会创新氛围为重要保障的实践路径,为建设世界科技强国提供理论指导和行动指南。

关键词：中国共产党科技思想高质量发展科技自立自强科技强国

Optimization of Agrobacterium tumefaciens-Mediated Transformation Systems in Tea Plant(Camellia sinensis)

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Horticultural Plant Journal 2017年第3期3卷 105-109页

作者： LV Qianru chen changsong XU Yijuan HU Shunkai WANG Le SUN Kang chen Xuan LI Xinghui Tea Research Institute Nanjing Agricultural University Tea Research Institute Fujian Academy of Agricultural Sciences

In this study, an efficient plant regeneration protocol in vitro and transformation by Agrobacterium-mediated method of Camellia sinensis was achieved, which would lay the foundation for genetic improvement of tea plant by genetic engineering technology. The cotyledon callus of C.sinensis were used as the receptors for transformation by Agrobacterium tumefaciens EHA105 containing PS1aG-3. Some factors which affected the result of Agrobacterium-mediated transformation of C. sinensis were studied on the basis of GUS transient expression system. The optimum system of Agrobacterium-mediated transformation was that the cotyledon callus were pre-cultured for 3 d, and then infected by EHA105 for 15 min followed by 3 d co-culture in the dark on the YEB medium containing 150 μmol·L^(-1) acetosyringone(AS). The transient expression rate of GUS gene was 62.6%. After being delayed selective culture for 3 d, infected callus were transferred into the differentiation medium and the root induction medium both of which were supplemented with 100 mg·L^(-1) spectinomycin, and then resistant seedlings of C. sinensis were obtained. The conversion rate was 3.6%.

关键词： Camellia sinensis cotyledon callus Agrobacterium-mediated GUS transient expression transformation ratio

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基于归纳矩阵填充预测中药潜在活性成分

中草药 2024年第9期55卷 3057-3063页

作者：李旺珍赵紫一陈悦杨晓艳贺福元丁长松湖南中医药大学信息科学与工程学院湖南长沙410208 湖南中医药大学药学院湖南长沙410208

目的为解决中药有效成分信息缺失、药效物质基础不清楚导致其现代作用机制不明的问题,借助中药药性信息和成分的化学结构信息,利用归纳矩阵填充方法预测中药潜在活性成分。方法首先,基于中药药性和化学成分信息构建中药-成分关联矩阵... 详细信息

目的为解决中药有效成分信息缺失、药效物质基础不清楚导致其现代作用机制不明的问题,借助中药药性信息和成分的化学结构信息,利用归纳矩阵填充方法预测中药潜在活性成分。方法首先,基于中药药性和化学成分信息构建中药-成分关联矩阵;其次,利用中药-成分关联矩阵中潜在的结构信息、中药药性信息和成分的化学结构信息,构建中药相似度矩阵和成分相似度矩阵;最后,基于中药相似度矩阵和成分相似度矩阵填充中药-成分关联矩阵。结果归纳矩阵填充在中药数据集中使用留一法交叉验证得到的曲线下面积(areaundercurve,AUC)值为0.7688。对丹参进行分析,丹参的活性化学成分隐丹参酮、丹参酮ⅡA、丹参酚醌和丹参醇等分别获得了较高的评分,该预测结果与实际相一致。结论借助归纳矩阵填充结合中药药性信息和成分的化学结构信息,可有效预测中药的潜在活性成分,为研究中药的现代作用机制提供了新的途径。

关键词：矩阵填充化学结构关联矩阵相似矩阵活性成分预测

用于低能耗人工视觉系统的具有互补光调制和低功耗的双极突触有机/无机异质结晶体管

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Science China Materials 2024年第5期67卷 1500-1508页

作者：刘常飞高昌松黄伟龙连敏锐许晨晖陈惠鹏郭太良胡文平 Institute of Optoelectronic Display National&Local United Engineering Lab of Flat Panel Display TechnologyFuzhou UniversityFuzhou350002China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou350100China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou350207China Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of ChemistrySchool of ScienceTianjin University&Collaborative InnovationCenter of Chemical Science and Engineering(Tianjin)Tianjin300072China

光电突触晶体管将光传感和突触功能集成到单个器件中,在视觉信息采集、识别、记忆和处理的神经形态计算具有显著的优势.然而,现有光电突触的权重更新主要是基于光刺激和电刺激分别调节突触的兴奋和抑制.这种方式严重限制了器件的处理速... 详细信息

光电突触晶体管将光传感和突触功能集成到单个器件中,在视觉信息采集、识别、记忆和处理的神经形态计算具有显著的优势.然而,现有光电突触的权重更新主要是基于光刺激和电刺激分别调节突触的兴奋和抑制.这种方式严重限制了器件的处理速度和应用场景.在这项工作中,我们提出了双极突触有机/无机异质结晶体管(BSOIHT),可以有效地模拟光刺激下的双向(兴奋/抑制)突触行为.此外,通过优化电极接触位置以及电极材料,晶体管的载流子注入得到了显著改善,使得突触事件功耗降至2.4 fJ.此外,采用BSOIHT构建的神经形态视觉系统,有效地促进了图像预处理,将识别准确率从44.93%大幅提高到87.01%.这为构建低能耗的人工视觉系统提供了新的途径.

关键词： photoelectric synaptic transistor artificial vision system low energy consumption bipolar heterojunction transistor