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Frontiers of Materials Science 2024年第2期18卷 89-100页

作者： dandan hu Linxiu Sui Jinjin Shi Dongfeng Li Yuxuan Zhang Yimeng Li Bingbing hu Xiaoya Yuan School of Materials Science and Engineering Chongqing Jiaotong UniversityChongqing 400074China Institute of Advanced Functional Materials Chongqing Jiaotong UniversityChongqing 400074China Chongqing 2D Materials Institute Liangjiang New AreaChongqing 400044China

In this work,C@Fe_(3)O_(4) composites were prepared through a typical template method with emulsified asphalt as carbon source,ammonium ferric citrate as transition metal oxide precursor,and NaCl as *** an anode for lithium-ion batteries,the optimized C@Fe_(3)O_(4)-1:2 composite exhibits an excellent reversible capacity of 856.6 mA·h·g^(-1)after 100 cycles at 0.1A·g^(-1)and a high capacity of 531.1mA·h·g^(-1)after 300 cycles at 1 A·g^(-1),much better than those of bulk carbon/Fe_(3)O_(4) prepared without *** remarkable cycling performance mainly benefits from its well-designed structure:Fe_(3)O_(4) nanoparticles generated from ammonium ferric citrate during pyrolysis are homogenously encapsulated in graphitized and in-plane porous carbon nanocages derived from petroleum *** carbon nanocages not only improve the conductivity of Fe_(3)O_(4),but also suppress the volume expansion of FesO4 effectively during the charge discharge cycle,thus delivering a robust electrochemical *** work realizes the high value-added utilization of low-cost petroleum asphalt,and can be extended to application of other transition-metal oxides-based anodes.

关键词： emulsified asphalt Fe_(3)O_(4)nanoparticle in-plane pore lithium-ion battery anode

Gp78 regulates PMP22 and causes ER stress and autophagy in EV71-VP1-overexpressing mouse Schwann cells

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BIOCELL 2024年第4期48卷 653-664页

作者： DANPING Zhu GUANGMING LIU KUAN FENG SUYUN LI dandan hu SIDA YANG PEIQING LI Pediatric Emergency Department Guangzhou Women and Children’s Medical CenterGuangzhou Medical UniversityGuangdong Provincial Clinical Research Center for Child HealthGuangzhouChina Department of Child Health Care Guangzhou Women and Children’s Medical CenterGuangzhou Medical UniversityGuangdong Provincial Clinical Research Center for Child HealthGuangzhouChina Pediatric Neurology Department Guangzhou Women and Children’s Medical CenterGuangzhou Medical UniversityGuangdong Provincial Clinical Research Center for Child HealthGuangzhouChina

Background:During Enterovirus type 71(EV71)infection,the structural viral protein 1(VP1)activates endoplasmic reticulum(ER)stress associated with peripheral myelin protein 22(PMP22)accumulation and induces ***,the speciﬁc mechanism behind this process remains ***:In this research,we used the VP1-overexpressing mouse Schwann cells(SCs)models co-transfected with a PMP22 silencing or Autocrine motility factor receptor(AMFR/gp78)overexpressing vector to explore the regulation of gp78 on PMP22 and its relationship with autophagy and ***:The activity of gp78 could be inﬂuenced by EV71-VP1,leading to a decrease in the ubiquitination and degradation of PMP22,resulting in PMP22 accumulation in *** VP1-overexpressing mouse SCs,all three ER stress sensors,including pancreatic endoplasmic reticulum kinase(PERK),activating transcription factor 6(ATF6)and inositol-requiring enzyme 1(IRE1)and the related downstream signals(C/EBP-homologous protein(CHOP)and Caspase 12)were activated,as well as the ER-resident chaperone Glucose-regulated protein 78(GRP78).In addition,VP1 upregulated the autophagy marker Microtubule-associated protein 1 light chain 3 beta(LC3B),while PMP22 silencing or gp78 overexpression reversed the ***,PMP22 silencing or gp78 overexpression increased proliferation of EV71-VP1-transfected mouse ***:Gp78 could regulate PMP22 accumulation through ubiquitination degradation and cause ER stress and autophagy in EV71-VP1-overexpressing mouse ***,the gp78/PMP22/ER stress axis might emerge as a promising therapeutic target for myelin and neuronal damage induced by EV71 infection.

关键词： Enterovirus type 71 AMFR/gp78 PMP22 Autophagy Schwann cells

Mg(NO_(3))_(2)·6H_(2O)-Assisted insitu-Fabrication of Tea Residual Biochar for Ultra-Fast and High Adsorption of Rhodamine B

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Wuhan University Journal of Natural Sciences 2024年第2期29卷 165-176页

作者： hu dandan XUE Yangfan LIU Bo WU Yongjuan LI Zichen School of Chemistry&Chemical Engineering Shaanxi Xueqian Normal UniversityXi'an 710100ShaanxiChina Safe College Xi􀆳an University of Science and TechnologyXi'an 710054ShaanxiChina

In this work,porous biochar(MN-TRB_(750))was fabricated via direct pyrolysis of tea residue(TR)and Mg(NO_(3))_(2)·6H_(2)O(MN).The as-synthesized MN-TRB_(750) reached a specific surface area of 839.54 m^(2)·g^(-1)and an average pore size of 3.75 nm with multi-level pore *** decreased TR's carbonization temperature and promoted the aromatics extent,pore structure for the frizzly flake-like *** B(RhB)was chosen as the adsorbate to explore the removal performance of organic dyes in this *** results indicated that the maximum adsorption capacity of RhB on MN-TRB_(750) at 20℃ is up to 809.0 mg·g^(-1)with isotherms fitted well to Freundlich and Dubinin-Radushkevic *** adsorption kinetics followed pseudo-second-order and Elovich models with an equilibrium adsorption capacity of 757.6 mg·g^(-1)as the initial concentration of RhB is 260 mg·L^(-1).High pore filling,hydrogen bond,π-πinteraction determined the adsorption of RhB onto MN-TRB850 through a multi-active center and exothermic chemical sorption process.

关键词： Mg(NO_(3))_(2)·6H_(2)O porous biochar mechanism rhodamine B adsorption

The occurrence,inheritance,and segregation of complex genomic structural variation in synthetic Brassica napus

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The Crop Journal 2024年第2期12卷 515-528页

作者： dandan hu Jin Lu Wenwen Li Yinghui Yang Junxiong Xu Han Qin Hao Wang Yan Niu huaiqi Zhang Qingqing Liu Xiangxiang He Annaliese S.Mason JChris Pires Zhiyong Xiong Jun Zou National Key Laboratory of Crop Genetic Improvement College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhan 430070HubeiChina College of Agronomy Henan Agricultural UniversityZhengzhou 450002HenanChina Key Laboratory of Herbage and Endemic Crop Biotechnology Inner Mongolia UniversityHohhot 010070Inner MongoliaChina Plant Breeding Department University of BonnBonn 53115Germany Department of Soil and Crop Sciences Colorado State UniversityFort CollinsCO 80523USA

"Synthetic"allopolyploids recreated by interspecific hybridization play an important role in providing novel genomic variation for crop *** synthetic allopolyploids often undergo rapid genomic structural variation(SV).However,how such SV arises,is inherited and fixed,and how it affects important traits,has rarely been comprehensively and quantitively studied in advanced generation synthetic lines.A better understanding of these processes will aid breeders in knowing how to best utilize synthetic allopolyploids in breeding ***,we analyzed three genetic mapping populations(735 DH lines)derived from crosses between advanced synthetic and conventional Brassica napus(rapeseed)lines,using whole-genome sequencing to determine genome *** observed high tolerance of large structural variants,particularly toward the telomeres,and preferential selection for balanced homoeologous exchanges(duplication/deletion events between the A and C genomes resulting in retention of gene/chromosome dosage between homoeologous chromosome pairs),including stable events involving whole chromosomes("pseudoeuploidy").Given the experimental design(all three populations shared a common parent),we were able to observe that parental SV was regularly inherited,showed genetic hitchhiking effects on segregation,and was one of the major factors inducing adjacent novel and larger ***,novel SV occurred at low frequencies with no significant impacts on observed fertility and yield-related traits in the advanced generation synthetic ***,incorporating genome-wide SV in linkage mapping explained significantly more genetic variance for *** results provide a framework for detecting and understanding the occurrence and inheritance of genomic SV in breeding programs,and support the use of synthetic parents as an important source of novel trait variation.

关键词： Allopolyploid Large Genome structural variation Linkage mapping Synthetic polyploids Inheritance and segregation

融合CBAM注意力机制与可变形卷积的车道线检测

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北京航空航天大学学报 2024年第7期50卷 2150-2160页

作者：胡丹丹张忠婷牛国臣中国民航大学机器人研究所天津300300 中国民航大学民航智慧机场理论与系统重点实验室天津300300

为满足自动驾驶及汽车高级驾驶辅助系统(ADAS)对车道线检测准确性和实时性的要求,提出一种融合卷积块注意力机制(CBAM)与可变形卷积网络(DCN)的车道线检测方法CADCN。在特征提取模块中嵌入CBAM注意力机制,增强有用特征并抑制无用特征响... 详细信息

为满足自动驾驶及汽车高级驾驶辅助系统(ADAS)对车道线检测准确性和实时性的要求,提出一种融合卷积块注意力机制(CBAM)与可变形卷积网络(DCN)的车道线检测方法CADCN。在特征提取模块中嵌入CBAM注意力机制,增强有用特征并抑制无用特征响应;引入可变形卷积替换常规卷积,用带偏移的采样学习车道线的几何形变,提高卷积核的建模能力;基于行锚分类思想,对行方向上的位置进行选择和分类分析,预测车道线的位置信息,提高车道线检测模型的实时性。在车道线公开数据集上对所提CADCN方法进行训练及验证,在满足实时性的情况下,CADCN方法在TuSimple数据集上准确率达到96.63%,在CULane数据集上综合评估指标F1平均值达到74.4%,验证了所提方法的有效性。

关键词：车道线检测特征提取注意力机制可变形卷积网络行锚分类

A Deep Reinforcement Learning Approach For Multi-Robot Task Allocation

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A Deep Reinforcement Learning Approach For Multi-Robot Task ...

基于改进YOLOv5s的面向自动驾驶场景的道路目标检测算法

第35届中国过程控制会议

作者： huantao Mao Dingxin He Hong Chen Yong Yang dandan hu Zhi-Wei Liu School of Artificial Intelligence and Automation Huazhong University of Science and Technology School of Management South-Central Minzu University

Research on multi-robot task execution is gaining increasing attention. To solve the above task allocation problem,deep reinforcement learning(DRL) methods have an advantage over conventional heuristic due to the reduced reliance on predefined rules. However, with the increase in problem scale, the decision space also expands accordingly, resulting in decreased computational efficiency. To address aforementioned challenges, we propose a novel architecture based on DRL for solving the multi-robot task allocation(MRTA) problem. We design an encoder-decoder structured policy network based on attention layers in the DRL model to allocate each task to a specific robot and train the model using the rollout-based REINFORCE *** results demonstrate the effectiveness of our approach compared to both learning based and conventional baselines,particularly in uncertain scenarios with up to 100 nodes. Furthermore, we evaluate our approach's generalization performance by applying it to tasks with up to 500 nodes.

关键词： deep reinforcement learning(DRL) multi-robot task allocation(MRTA) attention layers scalability

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智能系统学报 2024年第3期19卷 653-660页

作者：胡丹丹张忠婷中国民航大学机器人研究所天津300300

在复杂道路场景中检测车辆、行人、自行车等目标时,存在因多尺度目标及部分遮挡易造成漏检及误检等情况,提出一种基于改进YOLOv5s的面向自动驾驶场景的道路目标检测算法。首先,利用深度可分离卷积替换部分普通卷积,减少模型的参数量以... 详细信息

在复杂道路场景中检测车辆、行人、自行车等目标时,存在因多尺度目标及部分遮挡易造成漏检及误检等情况,提出一种基于改进YOLOv5s的面向自动驾驶场景的道路目标检测算法。首先,利用深度可分离卷积替换部分普通卷积,减少模型的参数量以提升检测速度。其次,在特征融合网络中引入基于感受野模块(receptive field block,RFB)改进的RFB-s,通过模仿人类视觉感知,增强特征图的有效感受野区域,提高网络特征表达能力及对目标特征的可辨识性。最后,使用自适应空间特征融合(adaptively spatial feature fusion,ASFF)方式以提升PANet对多尺度特征融合的效果。实验结果表明,在PASCAL VOC数据集上,所提算法检测平均精度均值相较于YOLOv5s提高1.71个百分点,达到84.01%,在满足自动驾驶汽车实时性要求的前提下,在一定程度上减少目标检测时的误检及漏检情况,有效提升模型在复杂驾驶场景下的检测性能。

关键词： YOLOv5s 自动驾驶目标检测算法深度可分离卷积感受野模块自适应空间特征融合 PANet 多尺度特征融合

电动汽车充/换电装置的选址定容改建优化策略

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重庆理工大学学报（自然科学） 2024年第5期38卷 30-37页

作者：胡丹丹寇竞泽中南民族大学管理学院武汉430074

针对电动汽车在快速发展中面临的问题,在改建现有设施的思路下,以现有的加油站和停车场作为候选地点,基于M/M/a排队系统,通过构建充/换电装置选址定容模型,将需求分配和充电站定容融入遗传算法进行仿真求解。优化的目标是最小化换电站... 详细信息

针对电动汽车在快速发展中面临的问题,在改建现有设施的思路下,以现有的加油站和停车场作为候选地点,基于M/M/a排队系统,通过构建充/换电装置选址定容模型,将需求分配和充电站定容融入遗传算法进行仿真求解。优化的目标是最小化换电站建设总成本、充电站建设总成本、未覆盖需求的总惩罚成本以及用户排队时间总成本之和。在算例中对单位惩罚成本、充电桩功率、覆盖范围、单位换电站建设成本进行敏感性分析。结果表明:在公共充电站内安装的充电桩并不是功率越大越好,应同时兼顾经济性和适用性。同时,政府可以采用补贴等形式鼓励企业建设换电站。

关键词：电动汽车选址定容模型遗传算法改建充/换电装置

关系治理能力对联盟知识转移的影响——目标协同的中介作用与环境动态性的调节作用

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科技进步与对策 2024年第14期41卷 93-101页

作者：李嘉李红旭胡丹丹南京大学商学院江苏南京210093 南京大学苏州校区党群团工作办公室江苏苏州215163

企业牵头引领联盟合作创新是国家发展所需、企业立身之本。在此背景下,基于协同创新理论,利用584份CEO与CTO填写的问卷数据进行分析,揭示关系治理能力对联盟知识转移的影响,并探讨目标协同的中介作用和环境动态性的调节作用。结果发现:... 详细信息

企业牵头引领联盟合作创新是国家发展所需、企业立身之本。在此背景下,基于协同创新理论,利用584份CEO与CTO填写的问卷数据进行分析,揭示关系治理能力对联盟知识转移的影响,并探讨目标协同的中介作用和环境动态性的调节作用。结果发现:关系治理能力与联盟伙伴目标协同正向影响知识转移;联盟伙伴目标协同在关系治理能力与知识转移之间具有显著中介作用;环境动态性是重要的情境变量,能够正向调节联盟伙伴目标协同与知识转移关系。

关键词：关系治理能力知识转移协同创新理论联盟伙伴目标协同环境动态性

数字技术创新赋能传统企业数字化转型的机理与路径

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科技创业月刊 2024年第9期37卷 160-167页

作者：胡丹丹中南建筑设计院股份有限公司湖北武汉430071

在全球数字化转型浪潮中,数字技术的应用成为重要驱动力,通过计算机辅助设计与数字技术深度融合,可以有效解决传统工业领域设计研发协同难题,并逐步拓展延伸至行业全产业链的全生命周期管理。基于此,围绕数字技术赋能数字化转型开展研... 详细信息

在全球数字化转型浪潮中,数字技术的应用成为重要驱动力,通过计算机辅助设计与数字技术深度融合,可以有效解决传统工业领域设计研发协同难题,并逐步拓展延伸至行业全产业链的全生命周期管理。基于此,围绕数字技术赋能数字化转型开展研究述评,深入探究数字化转型促进传统产业迈向高质量发展的机理与路径,以传统建筑设计企业中南建筑设计院基于PLM创新推进数字化转型为例,厘清PLM系统的数字技术创新关键环节,并且关注设计流程数字化向产品全生命周期数字化管理的升级过程,剖析企业内部数字化转型的机理,呈现全产业链协同合作创新转型的探索实践。研究揭示了传统建设设计企业利用数字技术创新实现数字化转型升级的内在逻辑,探究其对建筑行业全产业链数字化转型升级的支撑作用,为建筑产业及企业数字化转型提供理论启示与实践参考。

关键词：数字化转型数字技术技术创新建设设计企业传统企业 PLM系统