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Federated learning on non-IID and long-tailed data viadual-decoupling

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Frontiers of Information Technology & Electronic Engineering 2024年第5期25卷 728-741页

作者： Zhaohui WANG Hongjiao LI Jinguo LI Renhao HU baojin WANG College of Computer Science and Technology Shanghai University of Electric PowerShanghai 201306China

Federated learning(FL),a cutting-edge distributed machine learning training paradigm,aims to generate a global model by collaborating on the training of client models without revealing local private *** co-occurrence of non-independent and identically distributed(non-IID)and long-tailed distribution in FL is one challenge that substantially degrades aggregate *** this paper,we present a corresponding solution called federated dual-decoupling via model and logit calibration(FedDDC)for non-IID and long-tailed *** model is characterized by three ***,we decouple the global model into the feature extractor and the classifier to fine-tune the components affected by the joint *** the biased feature extractor,we propose a client confidence re-weighting scheme to assist calibration,which assigns optimal weights to each *** the biased classifier,we apply the classifier re-balancing method for ***,we calibrate and integrate the client confidence re-weighted logits with the re-balanced logits to obtain the unbiased ***,we use decoupled knowledge distillation for the first time in the joint problem to enhance the accuracy of the global model by extracting the knowledge of the unbiased *** experiments demonstrate that on non-IID and long-tailed data in FL,our approach outperforms state-of-the-art methods.

关键词： Federated learning Non-IID Long-tailed data Decoupling learning Knowledge distillation

Printable oil-NiO_(X)hole transport layer enables efficient n-i-p perovskite solar cells with a high thermal stability

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Science China Chemistry 2024年第7期67卷 2335-2340页

作者： Yazhou Xu Zhaoyang Chu Hongyu Wang Zhi Xing baojin Fan Xiaotian Hu Yiwang Chen College of Chemistry and Chemical Engineering/Institute of Polymers and Energy Chemistry(IPEC)/Film Energy Chemistry for Jiangxi Provincial Key Laboratory(FEC) Nanchang UniversityNanchang 330031China Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education Jiangxi Normal University Nanchang 330022China Peking University Yangtze Delta Institute of Optoelectronics Nantong 226010China

Currently,highly efficient n-i-p perovskite solar cells rely on an organic interface layer for high efficiency,especially 2,2',7,7'-tetrakis[N,N-bis(4-methoxyphenyl)ami-no]-9,9′-spirobifluorene(spiro-OMeTAD),but the instability of organic materials in the photothermal field compromises device *** this study,we employ the oleic acid(YS)/oleamine(YA)end-sealing method to achieve uniform dispersion of NiO_(X)nanoparticles,effectively mitigating coagulation resulting from high local concentration and secondary motion ***,the conductivity of the hole transport layer and its energy level alignment with perovskite is enhanced by the additional 2,3,5,6-tetrafluoro-7,7',8,8'-tetracyanodimethyl-p-benzoquinone(F4TCNQ),leading to a remarkable improvement of open-circuit voltage and fill factor,thus the high efficiency of 25.17%and 24.36%on 0.1 and 1.01cm2,***,by realizing an all-inorganic interface layer,an initial efficiency exceeding 90%is maintained even after 2,800 h of heating at 85℃.

关键词： oil-NiO_(X) perovskite solar cells printing technology high efficiency thermal stability

A large-scale proteogenomic atlas of pear

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Molecular Plant 2023年第3期16卷 599-615页

作者： Peng Wang Xiao Wu Zebin Shi Shutian Tao Zhe Liu Kaijie Qi Zhihua Xie Xin Qiao Chao Gu Hao Yin Mengyu Cheng Xiaoyu Gu Xueying Liu Chao Tang Peng Cao Shaohang Xu baojin zhou Tingting Gui Yangyang Bian Juyou Wu Shaoling Zhang Sanya Institute of Nanjing Agricultural University National Key Laboratory of Crop Genetics&Germplasm Enhancement and UtilizationNanjing Agricultural UniversityNanjing 210095China institute of Horticulture Zhejiang Academy of Agricutural SciencesHangzhou 310021China Deepxomics Co. LtdShenzhen 518000China College of Life Sciences Northwest UniversityXi'an 710127China

Pear is an important fruit tree that is widely distributed around the *** first pear genome map was reported from our laboratory approximately 10 years *** further study global protein expression patterns in pear,we generated pear proteome data based on 24 major *** tissue-resolved profiles provided evidence of the expression of 17953 *** identified 4294 new coding events and improved the pear genome annotation via the proteogenomic strategy based on 18090 peptide spectra with peptide spectrum matches>*** the eight randomly selected new short coding open reading frames that were expressed in the style,four promoted and one inhibited the growth of pear pollen *** on gene coexpression module analysis,we explored the key genes associated with important agronomic traits,such as stone cell formation in *** network regulating the synthesis of lignin,a major component of stone cells,was reconstructed,and receptor-like kinases were implicated as core factors in this regulatory ***,we constructed the online database PearEXP(http://***)to enable access to the pear proteogenomic *** study provides a paradigm for in-depth proteogenomic studies of woody plants.

关键词： pear Pyrus proteome transcriptome proteogenomics genome annotation database

A biomimetic spore nanoplatform for boosting chemodynamic therapy and bacteria-mediated antitumor immunity for synergistic cancer treatment

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Asian Journal of Pharmaceutical Sciences 2024年第3期19卷 106-118页

作者： Cuixia Zheng Lingling Sun Hongjuan Zhao Mengya Niu Dandan Zhang Xinxin Liu Qingling Song Weijie Zhong baojin Wang Yun Zhang Lei Wang Huaihe Hospital of Henan University Translational medicine Center Weihai Municipal Hospital Cheeloo College of Medicine Shandong University School of Pharmaceutical Sciences Zhengzhou University Pingyuan Lab Henan Normal University Gynecology the Third Affiliated Hospital of Zhengzhou University

Bacterial-based antitumor immunity has become a promising strategy to activate the immune system for fighting ***,the potential application of bacterial therapy is hindered by the presence of instability and susceptibility to infections within bacterial ***,monotherapy is ineffective in completely eliminating complex cancer with multiple contributing *** this study,based on our discovery that spore shell （SS） of Bacillus coagulans exhibits excellent tumor-targeting ability and adjuvant activity,we develop a biomimetic spore nanoplatform to boost bacteria-mediated antitumor therapy,chemodynamic therapy and antitumor immunity for synergistic cancer *** detail,SS is separated from probiotic spores and then attached to the surface of liposome （Lipo） that was loaded with hemoglobin （Hb）,glucose oxidase （GOx） and JQ1to construct SS@Lipo/Hb/GOx/*** tumor tissue,highly toxic hydroxyl radicals （·OH）are generated via sequential catalytic reactions:GOx catalyzing glucose into H2O2and Fe2+in Hb decomposing H2O2into·*** combination of·OH and SS adjuvant can improve tumor immunogenicity and activate immune ***,JQ1-mediated down-regulation of PD-L1 and Hb-induced hypoxia alleviation synergistically reshape immunosuppressive tumor microenvironment and potentiate immune *** this manner,SS@Lipo/Hb/GOx/JQ1 significantly suppresses tumor growth and *** summarize,the nanoplatform represents an optimum strategy to potentiate bacteria-based cancer immunotherapy.

关键词： Biomimetic spore shell Bacteria-mediated antitumor therapy Chemodynamic therapy Immunotherapy Tumor microenvironment

1000 MPa级高强钢埋弧焊熔敷金属组织及性能

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焊接 2023年第11期 6-12页

作者：冯伟于庭祥徐锴陈波张庆素周宝金哈尔滨威尔焊接有限责任公司哈尔滨150060 中国机械总院集团哈尔滨焊接研究所有限公司哈尔滨150028

针对水电用1000 MPa级高强钢设计了一种埋弧焊用焊丝、焊剂。借助JMat Pro软件对熔敷金属的组织和力学性能进行模拟,并通过拉伸试验、冲击试验、OM,SEM,EDS等手段对其进行评价。研究了熔敷金属成分和焊接热输入对熔敷金属组织及力学性... 详细信息

针对水电用1000 MPa级高强钢设计了一种埋弧焊用焊丝、焊剂。借助JMat Pro软件对熔敷金属的组织和力学性能进行模拟,并通过拉伸试验、冲击试验、OM,SEM,EDS等手段对其进行评价。研究了熔敷金属成分和焊接热输入对熔敷金属组织及力学性能的影响。试验结果表明,研制的焊材焊接工艺性优良,通过控制合金元素含量使熔敷金属力学性能远高于标准值;重点分析了Cr含量对熔敷金属组织和力学性能的影响,熔敷金属中少量的Cr元素会提高针状铁素体含量,Cr元素含量较高时,会增加贝氏体含量,使熔敷金属强度不断提高,冲击韧性先提高后降低;随着焊接热输入的升高,熔敷金属中针状铁素体含量不断减少,先共析铁素体含量提高,组织粗化,熔敷金属强韧性不断降低。

关键词： 1000MPa级高强钢熔敷金属埋弧焊大热输入

单刃螺旋铣刀铣削中密度纤维板的表面粗糙度建模与优化

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林业工程学报 2024年第3期9卷 61-68页

作者：张云王宝金南京林业大学材料科学与工程学院南京210037

中密度纤维板(MDF)被广泛应用于木质家具行业,螺旋齿铣削加工具有加工过程稳定、加工表面质量好等优点,与多刃螺旋铣刀相比,单刃螺旋铣刀在板材铣削加工中具有独特的优势。在实际生产中,常采用单刃螺旋铣刀对中密度纤维板进行开料铣削加... 详细信息

中密度纤维板(MDF)被广泛应用于木质家具行业,螺旋齿铣削加工具有加工过程稳定、加工表面质量好等优点,与多刃螺旋铣刀相比,单刃螺旋铣刀在板材铣削加工中具有独特的优势。在实际生产中,常采用单刃螺旋铣刀对中密度纤维板进行开料铣削加工,故研究单刃螺旋铣刀铣削加工中密度纤维板的切削性能具有一定的理论意义和实用价值。采用直径为6 mm的单刃螺旋铣刀对中密度纤维板进行了铣削试验研究。在采用折线图法考察进给速度和铣削深度对铣削加工表面粗糙度Ra影响的基础上,结合Design-Expert软件,采用响应曲面法建立了描述输入变量与响应变量关系的二次模型,以确定表面粗糙度与切削条件的关系,确定了铣削参数的优化组合。结果表明:采用单刃螺旋铣刀铣削中密度纤维板时,其加工表面粗糙度Ra与进给速度和切削深度之间均呈正相关,即加工表面粗糙度Ra均随进给速度的增大和铣削深度的增大而增大;加工表面粗糙度Ra受铣削深度的影响最大,受进给速度的影响次之,而受两者之间相互作用的影响很小;优化组合后的进给速度和铣削深度分别为933.75 mm/min和0.86 mm,此时最小表面粗糙度Ra为7.70μm。

关键词：单刃螺旋铣刀中密度纤维板表面粗糙度Ra 响应曲面法优化

多层异种钢复合波纹管与SUS304接管的焊接

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焊接 2005年第12期 34-36页

作者：周宝金李向阳李伟任彬王毅民机械科学研究院哈尔滨焊接研究所 150080 北京弗莱希波.泰格金属波纹管有限公司 100010 哈尔滨北方特种车辆制造有限公司 150056

根据多层波纹管产品特点,通过试验制定了多层异种钢复合波纹管一层耐蚀层为IN800,基层为4层SUS316的膨胀节与SUS304接管的焊接工艺。经工艺评定和产品性能试验证明,按该工艺焊接的接头可以满足设计和使用要求。

关键词：多层波纹管膨胀节焊接工艺

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铁路车辆用TCS耐蚀钢的焊接性研究

焊接 2006年第10期 46-50页

作者：李晓波王志彬王立新周宝金周世锋王慧源太原钢铁集团有限公司 030003 机械科学研究院哈尔滨焊接研究所 150080

通过冷裂敏感性试验、焊接热影响区最高硬度试验及可调拘束试验,对新型铁路车辆用TCS耐蚀钢的焊接性进行了深入系统分析。结果表明,TCS钢具有良好的抗冷裂敏感性和抗结晶热裂敏感性能。

关键词：冷裂敏感性焊接热影响区可调拘束试验 TCS耐蚀材料

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防撞梁结构设计与碰撞性能研究

包装工程 2024年第3期45卷 308-316页

作者：邱保金许迅东华理工大学美术与设计学院南昌330032

目的研究汽车防撞梁材料选择和结构设计对汽车安全性的影响。方法通过对汽车防撞梁的概念及特性进行总结归纳,并比对不同材料和不同结构的防撞梁对其安全性的影响,并通过仿真模拟探究不同材料下的碰撞性能。结果结构最优情况下,增强竹... 详细信息

目的研究汽车防撞梁材料选择和结构设计对汽车安全性的影响。方法通过对汽车防撞梁的概念及特性进行总结归纳,并比对不同材料和不同结构的防撞梁对其安全性的影响,并通过仿真模拟探究不同材料下的碰撞性能。结果结构最优情况下,增强竹纤维复合材料防撞梁在其碰撞测试过程中表现出位移较低且修复性能较强等特性。结论该结果表明了增强竹纤维复合材料具有较好的保护性能,增强竹纤维复合材料相较于其他传统材料而言具有可降解的优异特性和良好的可回收性,为现代汽车设计提供了良好的参考建议,有利于汽车工业的良性发展,也有助于进一步提升整车的安全性能。

关键词：增强竹纤维复合材料汽车防撞梁结构碰撞性能仿真