检索结果-南通市图书馆

Evolutionary Neural Architecture Search and Its Applications in Healthcare

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2024年第4期139卷 143-185页

作者： Xin Liu Jie Li jianwei zhao Bin Cao Rongge Yan Zhihan Lyu School of Economics and Management Hebei University of TechnologyTianjin300401China School of Artificial Intelligence Hebei University of TechnologyTianjin300401China School of Electrical Engineering Hebei University of TechnologyTianjin300401China Department of Game Design Uppsala UniversityUppsalaS-75105Sweden

Most of the neural network architectures are based on human experience,which requires a long and tedious trial-and-error *** architecture search(NAS)attempts to detect effective architectures without human *** algorithms(EAs)for NAS can find better solutions than human-designed architectures by exploring a large search space for possible *** multiobjective EAs for NAS,optimal neural architectures that meet various performance criteria can be explored and discovered ***,hardware-accelerated NAS methods can improve the efficiency of the *** existing reviews have mainly focused on different strategies to complete NAS,a few studies have explored the use of EAs for *** this paper,we summarize and explore the use of EAs for NAS,as well as large-scale multiobjective optimization strategies and hardware-accelerated NAS *** performs well in healthcare applications,such as medical image analysis,classification of disease diagnosis,and health *** for NAS can automate the search process and optimize multiple objectives simultaneously in a given healthcare *** neural network has been successfully used in healthcare,but it lacks *** data is highly sensitive,and privacy leaks are frequently reported in the healthcare *** solve these problems,in healthcare,we propose an interpretable neuroevolution framework based on federated learning to address search efficiency and privacy ***,we also point out future research directions for evolutionary ***,for researchers who want to use EAs to optimize NNs in healthcare,we analyze the advantages and disadvantages of doing so to provide detailed guidance,and propose an interpretable privacy-preserving framework for healthcare applications.

关键词： Neural architecture search evolutionary computation large-scale multiobjective optimization distributed parallelism healthcare

Chiral induction and Sb3+doping in indium halides to trigger second harmonic generation and circularly polarized luminescence

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第8期35卷 503-507页

作者： Yongjing Deng Feiyang Li Zijian Zhou Mengzhu Wang Yongkang Zhu jianwei zhao Shujuan Liu Qiang zhao State Key Laboratory of Organic Electronics and Information Displays&Jiangsu Key Laboratory for Biosensors Institute of Advanced Materials(IAM)&Institute of Flexible Electronics(Future Technology)Nanjing University of Posts&Telecommunications(NJUPT)Nanjing 210023China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212100China Shenzhen HUASUAN Technology Co. Ltd.Shenzhen 518000China

Recently,organic-inorganic hybrid metal halides(HMHs)have attracted extensive attention as promis-ing multifunctional materials by virtue of their structural diversity and tunable photophysical ***,it remains a challenge to design HMHs with specific functions on ***,by introduc-ing R/S-methylbenzylamine(R/S-MBA)and doping Sb^(3+),we have achieved both second harmonic gen-eration(SHG)and circularly polarized luminescence(CPL)properties in lead-free indium *** introduction of chiral organic cations can break the symmetry and induce the indium halides to crys-tallize in the chiral space *** Sb^(3+)with ns2 electronic configuration can serve as the dopants to promote the formation of self-trapped excitons,so as to activate highly efficient *** a re-sult,the as-prepared Sb3+doped(R/S-MBA)3 InCl6 show not only SHG responses but also CPL signals with luminescence dissymmetry factor of−5.3×10^(−3) and 4.7×10^(−3).This work provides a new inspiration for the exploitation of chiral multifunctional materials.

关键词： Hybrid metal halides Self-trapped excitons Chiral induction Second-harmonic generation Circularly polarized luminescence

Regulating the inner Helmholtz plane structure at the electrolyte-electrode interface for highly reversible aqueous Zn batteries

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第8期95卷 57-67,I0002页

作者： Jianghe Liu Sanlue Hu Hexin Guo Guobin Zhang Wen Liu jianwei zhao Shenhua Song Cuiping Han Baohua Li Shenzhen Key Laboratory on Power Battery Safety and Shenzhen Geim Graphene Center Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055GuangdongChina Shenzhen Key Laboratory of Advanced Materials School of Materials Science and EngineeringHarbin Institute of TechnologyShenzhen 518055GuangdongChina Faculty of Materials Science and Energy Engineering/Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055GuangdongChina Shenzhen HUASUAN Technology Co. Ltd.Shenzhen 518055GuangdongChina

The development of aqueous Zn batteries is limited by parasitic water reactions,corrosion,and dendrite *** address these challenges,an inner Helmholtz plane(IHP)regulation method is proposed by employing low-cost,non-toxic maltitol as the electrolyte *** preferential adsorption behavior of maltitol can expel the water from the inner Helmholtz plane,and thus hinder the immediate contact between Zn metal and H_(2)***,strong interaction between maltitol and H_(2)O molecules can restrain the activity of H_(2)***,the"IHP adsorption effect"along with the low LUMO energy level of maltitol-CF_(3)SO_(3)^(-)can promote the in-situ formation of an organic-inorganic complex solid electrolyte interface(SEI)*** a result,the hydrogen/oxygen evolution side reaction,corrosion,and dendrites issues are effectively suppressed,thereby leading to highly reversible and dendrite-free Zn plating/*** Zn‖I_(2)battery with hybrid electrolytes also demonstrates high electrochemical performance and ultralong cycling stability,showing a capacity retention of 75%over 20000 charge-discharge cycles at a large current density of 5 A g^(-1).In addition,the capacity of the device has almost no obvious decay over20000 cycles even at-30℃.This work offers a successful electrolyte regulation strategy via the IHP adsorption effect to design electrolytes for high-performance rechargeable Zn-ion batteries.

关键词： Inner Helmholtz plane Adsorption effect Dendrite suppression SEI layer Zn||I_(2)battery

Engineering Cu_(2)O/Cu/N-C interface to induce directional migration of charge for driving photocatalytic homo-coupling of terminal alkynes

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第8期17卷 6895-6902页

作者： Xiaoqin Yan Tianyi Xu Wenwen Zhan Yang Yang Yang Yu Jianjian Yi Xiaoxiao He Lei Yang jianwei zhao Liming Sun Xiguang Han Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials Department of ChemistrySchool of Chemistry&Materials ScienceJiangsu Normal UniversityXuzhou 221116China State Key Laboratory of Precision Spectroscopy East China Normal UniversityShanghai 200241China College of Environmental Science and Engineering Yangzhou UniversityYangzhou 225009China Shenzhen HUASUAN Technology Co. LtdShenzhen 518055China

The efficient utilization of visible light catalysts for organic reactions necessitates not only the effective separation of photogenerated electrons and holes to participate in the reaction,but also their ability to form key intermediates with reactant *** present study successfully synthesized a crusiform-like mesoporous structure of nitrogen-doped carbon-coated Cu_(2)O/Cu(Cu_(2)O/Cu/N-C)with a Cu_(2)O/dual electron acceptor interface using etched HKUST-1 as the precursor.A series of theoretical and experimental studies have demonstrated that the Cu_(2)O/Cu/N-C interface in the photocatalytic homo-coupling of terminal alkynes not only effectively enhances the separation of photogenerated electron−hole pairs,but also facilitates the formation of the key intermediate[Cu_(2)O/Cu/N-C]-phenylacetylide and promotes the rearrangement of its internal *** a result,the homo-coupling reaction can be effectively *** primary reason for the functional role of Cu_(2)O/Cu/N-C interface lies in the downward bending of energy band from Cu_(2)O to N-doped C layers,induced by the different work functions of Cu_(2)O,Cu and N-doped C ***,Cu_(2)O/Cu/N-C photocatalysts demonstrate exceptional photocatalytic activity in the homo-coupling reaction of terminal alkynes under blue-light irradiation and air *** present study presents a novel research methodology for the development of highly efficient visible light catalysts to facilitate organic reactions in future applications.

关键词： photocatalysis homo-coupling of terminal alkynes directional migration of charges heterojunction interface Cu_(2)O carbon coated

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

美国战略学术界对“全球南方”的认知与辩论

国际论坛 2024年第4期26卷 65-86,157页

作者：赵建伟北京大学国际战略研究院北京100871

俄乌冲突爆发后,美国战略学术界出现讨论“全球南方”的热潮。其中,“全球南方”概念、使用情境及战略运用成为议论焦点。对于“全球南方”概念的迅速复兴,一些人排斥且强调谨慎对待,另一些人则接受并主张创造性使用。美国战略学术界主... 详细信息

俄乌冲突爆发后,美国战略学术界出现讨论“全球南方”的热潮。其中,“全球南方”概念、使用情境及战略运用成为议论焦点。对于“全球南方”概念的迅速复兴,一些人排斥且强调谨慎对待,另一些人则接受并主张创造性使用。美国战略学术界主要从六个层面探讨“全球南方”的使用情境。在传统安全领域,“全球南方”成为美国拉拢的对象,正逐步获得更多的战略自主权;在非传统安全领域,“全球南方”是利益受损的集体,但其影响力逐渐增强;在地区秩序层面,“全球南方”被视为中国和印度争夺地区领导权的竞技场;在全球秩序层面,“全球南方”被看作是中俄与美西方争夺的焦点。在地缘政治经济层面,“全球南方”中的关键摇摆国家代表了国际格局中的重要力量。在意识形态与政治制度层面,“全球南方”是一个多元化的混合体。研究发现,美国战略学术界的辩论起始于现实政治的迫切性,服务于美国的战略需求;其认知兼具多样性与局限性,具有强烈的地缘政治倾向;其主流观点在美国外交政策实践中获得认可,未来可能会提出更具挑战性的观点和方案。面对美国对“全球南方”采取的新攻势,中国须深化对“全球南方”的认知,避免陷入美方设定的议题陷阱,进一步明确本国的国际定位,并坚定地同“全球南方”站在一起,不断为“全球南方”的发展与合作注入强大动力。

关键词：美国战略学术界全球南方地缘政治全球秩序国家安全

在线全文

学校读者我要写书评

暂无评论

红米米糠非淀粉多糖的提取纯化与结构表征

食品与发酵工业 2024年第9期50卷 157-163页

作者：李雪超赵建伟周星金征宇江南大学食品学院江苏无锡214122

红米是我国产量最大的有色米,具有抗氧化、抗炎等功能,但其水溶性多糖资源并未被开发利用。该文以红米米糠为原料,脱脂后利用热水提取,经脱色、除蛋白、醇沉、透析制得红米米糠非淀粉多糖(non-starch polysaccharides from red rice bra... 详细信息

红米是我国产量最大的有色米,具有抗氧化、抗炎等功能,但其水溶性多糖资源并未被开发利用。该文以红米米糠为原料,脱脂后利用热水提取,经脱色、除蛋白、醇沉、透析制得红米米糠非淀粉多糖(non-starch polysaccharides from red rice bran,RRBP)。利用DEAE-52 Cellulose和Sephadex G-200分离纯化得到不同的部分,其中比例最大的为RRBP4组分。通过高效液相色谱、傅里叶红外光谱与完全酸水解、部分酸水解、β-消除、I 2-KI实验、刚果红实验等方法对RRBP4的分子质量、单糖组成、主链与侧链、糖苷键、分支程度与三螺旋构象进行分析。结果表明,RRBP4的相对分子质量为1.65×10^(5)Da,由甘露糖、核糖、鼠李糖、葡萄糖醛酸、半乳糖醛酸、葡萄糖、半乳糖、木糖和阿拉伯糖组成,其摩尔比例为0.29∶1.93∶0.35∶1.41∶0.50∶1.00∶5.58∶1.67∶2.56,是一种以半乳糖为主的酸性杂聚糖。RRBP4中有62.40%的多糖集中于侧链,是一种高度支化的多糖。RRBP4是以α-糖苷键为主且含有氨基酸的多糖,同时具有三螺旋结构。红米米糠非淀粉多糖的结构分析能够为开发其在食品工业中的应用提供科学基础数据。

关键词：红米米糠多糖提取纯化结构

在线全文

学校读者我要写书评

暂无评论

元宇宙时代主体发展完善的哲学阐释

浙江理工大学学报（社会科学版） 2024年第2期52卷 195-205页

作者：赵建伟江门职业技术学院马克思主义学院广东江门529000

元宇宙通过对现实世界底层逻辑的复制,为人类提供了虚实相融的具身互动和普遍交往世界、全新文明和价值创造世界,从而吸引人类向元宇宙虚拟世界大规模迁移,世界由此分化为虚拟世界和现实世界,世界二分化推动着主体二分化为虚拟主体和现... 详细信息

元宇宙通过对现实世界底层逻辑的复制,为人类提供了虚实相融的具身互动和普遍交往世界、全新文明和价值创造世界,从而吸引人类向元宇宙虚拟世界大规模迁移,世界由此分化为虚拟世界和现实世界,世界二分化推动着主体二分化为虚拟主体和现实主体。通过唯物辩证法的理论视角,在深入揭示虚实相融的具体路径、主体分化为现实主体和虚拟主体的机制,以及二者统一机制的基础上,厘清虚拟主体和现实主体通过互为根据与相互扬弃,在具身交往实践和全面性认识中统一于主体系统的过程,从而科学揭示虚拟主体和现实主体通过内部相互作用推动人的发展的机制,开创虚拟主体研究新领域,推动主体发展完善和元宇宙文明发展。

关键词：元宇宙虚实相融具身互动主体分化虚拟主体

中空铜纳米线的拉伸断裂分布与初始滑移分布的关系

在线全文

学校读者我要写书评

暂无评论

无机化学学报 2024年第2期40卷 394-404页

作者：刘守涛赵健伟王奋英马汉杰浙江理工大学信息科学与工程学院杭州310018 嘉兴学院材料与纺织工程学院嘉兴314001 南昌大学化学化工学院南昌330031 浙江理工大学计算机科学与技术学院(人工智能学院) 杭州310018

构建了系列球形中空结构的纳米线(NW),采用分子动力学(MD)对每个模型300个不同初始态的样本开展拉伸形变模拟。并利用基于密度的噪声应用空间聚类(density-based spatial clustering of applications with noise,DBSCAN)机器学习算法,... 详细信息

构建了系列球形中空结构的纳米线(NW),采用分子动力学(MD)对每个模型300个不同初始态的样本开展拉伸形变模拟。并利用基于密度的噪声应用空间聚类(density-based spatial clustering of applications with noise,DBSCAN)机器学习算法,获得了初始滑移面的位置。基于大数据统计,分析了初始滑移位置分布以及断裂位置分布两者之间的相关性。研究结果表明:当内部中空半径较小时,断裂位置分布形成于塑性形变阶段,初始滑移分布与断裂位置分布之间无显著的相关性;但是对于脆性特征明显的大中空半径的NW,高能内表面诱导产生的滑移面迅速积累,产生颈缩并导致最终的断裂。因此当内部中空结构达到一定尺寸时初始滑移位置的分布与最终断裂位置的分布之间有明确的因果关系。

关键词：分子动力学中空结构基于密度的噪声应用空间聚类算法初始滑移断裂失效

基于轻量级对称CNN-Transformer的图像超分辨率重建方法

在线全文

学校读者我要写书评

暂无评论

模式识别与人工智能 2024年第7期37卷 626-637页

作者：王庭伟赵建伟周正华中国计量大学信息工程学院杭州310018 浙江财经大学数据科学学院杭州310018

针对现有基于Transformer的图像超分辨率重建方法存在参数量过大和训练成本过高等问题,提出基于轻量级对称CNN-Transformer的图像超分辨率重建方法.首先,利用权值共享设计对称CNN-Transformer模块,经由通道注意模块充分融合上、下分支... 详细信息

针对现有基于Transformer的图像超分辨率重建方法存在参数量过大和训练成本过高等问题,提出基于轻量级对称CNN-Transformer的图像超分辨率重建方法.首先,利用权值共享设计对称CNN-Transformer模块,经由通道注意模块充分融合上、下分支提取的信息,提高对局部特征和全局特征的捕获和利用.同时,通过深度可分离卷积并计算自注意跨通道的协方差矩阵,有效减少Transformer的参数量,降低计算成本和显存消耗.然后,引入HFERB(High-Frequency Enhancement Residual Block),进一步关注高频区间的纹理和细节信息.最后,探讨Transformer生成自注意时所需激活函数的选择,分析可知GELU激活函数能较好地促进特征聚合,提升网络性能.实验表明文中方法在保持轻量化的同时,能有效重建图像更多的纹理与细节.

关键词：图像超分辨率重建深度学习 Transformer 对称网络