检索结果-南通市图书馆

Wafer‑Scale Ag_(2)S‑Based Memristive Crossbar Arrays with Ultra‑Low Switching‑Energies Reaching Biological Synapses

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第3期17卷 328-339页

作者： Yuan Zhu Tomas Nyberg Leif Nyholm Daniel Primetzhofer xun Shi Zhen zhang Division of Solid‑State Electronics Department of Electrical EngineeringUppsala University75121 UppsalaSweden Department of Chemistry Uppsala UniversityUppsalaSweden Department of Physics and Astronomy Uppsala UniversityUppsalaSweden State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China

Memristive crossbar arrays(MCAs)offer parallel data storage and processing for energy-efficient neuromorphic ***,most wafer-scale MCAs that are compatible with complementary metal-oxide-semiconductor(CMOS)technology still suffer from substantially larger energy consumption than biological synapses,due to the slow kinetics of forming conductive paths inside the memristive *** we report wafer-scale Ag_(2)S-based MCAs realized using CMOS-compatible processes at temperatures below 160℃.Ag_(2)S electrolytes supply highly mobile Ag+ions,and provide the Ag/Ag_(2)S interface with low silver nucleation barrier to form silver filaments at low energy *** further enhancing Ag+migration in Ag_(2)S electrolytes via microstructure modulation,the integrated memristors exhibit a record low threshold of approximately−0.1 V,and demonstrate ultra-low switching-energies reaching femtojoule values as observed in biological *** low-temperature process also enables MCA integration on polyimide substrates for applications in flexible ***,the intrinsic nonidealities of the memristive units for deep learning can be compensated by employing an advanced training *** impressive accuracy of 92.6%in image recognition simulations is demonstrated with the MCAs after the *** demonstrated MCAs provide a promising device option for neuromorphic computing with ultra-high energy-efficiency.

关键词： Wafer-scale Ag_(2)S films Reactive sputter Silver nucleation Ag^(+)migration Energy-efficient neuromorphic computing

Study on Equation of State for Isospin Asymmetric Matter of Nucleons and Deltas

在线全文

学校读者我要写书评

暂无评论

Study on Equation of State for Isospin Asymmetric Matter of ...

作者： LU Xiao-hua zhang ying-xun LI Zhu-xia ZHAO Zhi-xiang

An investigation on the equation of state of the isospin asymmetric,hot,dense matter of nucleons and deltas is performed based on the relativistic mean field *** QHD-Ⅱtype effective Lagrangian extending to delta degree of freedom is *** this study,the chemical equilibrium conditions are adopted when the delta resonance appears,i.e.:

关键词：

Constraints on Symmetry Energy and Nucleon Effective Mass Splitting With Heavy Ion Collisions

在线全文

cnki会议

学校读者我要写书评

暂无评论

Constraints on Symmetry Energy and Nucleon Effective Mass Sp...

作者： zhang ying-xun M.B.Tsang LI Zhu-xia LIU Hang Department of Nuclear Physics National Superconducting Cyclotron Laboratory of the United State of America Texas Advanced Computing Center University of Texas

The symmetry energy is of fundamental importance in our understanding of nature’s asymmetric objects including neutron stars as well as heavy nuclei with very different number of neutrons and *** predictions on the symmetry energy have large *** stimulates a lot of efforts in the nuclear physics communities to provide experimental constraints on the density dependence of

关键词：

在线全文

cnki会议

学校读者我要写书评

暂无评论

健康成人碎裂QRS波的发生及影响因素分析

中国循环杂志 2013年第5期28卷 364-366页

作者：张迅英王蒙山东省交通医院心内科济南市250031

目的：研究健康成人碎裂QRS波的发生率、分布规律及影响因素。方法：本研究入选1491名健康成年体检者，年龄20～88岁，其中男性878名，女性613名，采集静息状态下常规12导联心电图。观察碎裂QRS波发生率及性别差异。将入选者分为〈50岁... 详细信息

目的：研究健康成人碎裂QRS波的发生率、分布规律及影响因素。方法：本研究入选1491名健康成年体检者，年龄20～88岁，其中男性878名，女性613名，采集静息状态下常规12导联心电图。观察碎裂QRS波发生率及性别差异。将入选者分为〈50岁者和≥50岁者两个年龄段，分析其碎裂QRS波的发生率、分布规律及影响因素。结果：碎裂QRS波发生率：①1494名发生率9．66％（144／1491），男、女性发生率分别为11．50%（101／878）和7．01％（43／613）；②≥50岁者碎裂QRS波发生率明显高于〈50岁者（13．29％vs7．88％），女性发生率增加尤为明显（11．73％vs4．50％），男性不明显（13．33％VS10．55％）；③碎裂QRS波发生在下壁导联的比例为90．97％（131／144），发生在胸前导联的比例为8．33％（12／144），均多在V1～V3导联。高侧壁导联发生率7．64％（11／144），几乎均伴随下壁导联发生。结论：①碎裂QRS波在健康成人中比较常见，并且多发生在下壁导联；②碎裂QRS波发生与年龄和性别相关。

关键词：碎裂QRS波健康成人影响因素

Probing Dissipation Mechanism in Ternary Reactions of197Au+197 Au by Mean Free Path of Nucleons

在线全文

学校读者我要写书评

暂无评论

Probing Dissipation Mechanism in Ternary Reactions of197Au+1...

作者： TIAN Jun-long WU Xi-zhen ZHAO Kai zhang ying-xun LI Zhu-xia Beijing Normal University

To make clear the dissipation mechanism microscopically,we choose mean free path of nucleons to probe the energy dissipation ***-body nuclear dissipation connects with the long mean free path of nucleons,which arises from nucleons colliding with the moving potential wall rather than with another ***-body dissipation proceeds from collisions between individual nucleons,which should apply only to systems for which the collision mean free path is smaller compared to the spatial *** of very heavy nuclei Au+Au at the energy of 15 AMeV have been studied within the improved quantum molecular dynamics model(ImQMD).A class of ternary events satisfying

关键词：

Study on Behaviors in Ternary Fission of 197Au+197Au at 15 AMeV

在线全文

cnki会议

学校读者我要写书评

暂无评论

Study on Behaviors in Ternary Fission of 197Au+197Au at 15 A...

作者： WU Xi-zhen TIAN Jun-long ZHAO Kai zhang ying-xun LI Zhu-xia

The ternary fission found in the reaction Au+ Au at 15 AMeV are completely different from the well known normal ternary *** normal ternary fission means that in addition to two main fission fragments a light charged particle is emitted from the *** kind of ternary fission appearing in actinide elements U,Cf and so on has been studied for *** ternary fission for very heavy systems such as Au+Au systems was studied previously within framework of the liquid-drop model with

关键词：

Inner Am monium Salt Carbocyanine Filmson SiSurface and Their Photoelectric Properties

在线全文

cnki会议

学校读者我要写书评

暂无评论

Semiconductor Photonics and Technology 1999年第4期5卷 211-215页

作者： GU Ji-xian, WANG Lan-ying, zhang Zu-xun zhang Xiao-hong,CAO Zi-xiang (Northwest University, Xi’an 710069,CHN) 西北大学陕西西安

Two inner salt carbocyanines were filmed chemically on the Si surface through Si-O-C bond. The structures were characterized by SERS and XPS. And the spectral response and surface photovoltage spectrum were measured. ... 详细信息

关键词： Photoelectric Properties Photosensitive Dye Silicon

在线全文

学校读者我要写书评

暂无评论

分布算术并行结构设计研究

计算机工程与应用 2010年第12期46卷 75-78页

作者：梁刚赵伟张洵颖河南大学计算机与信息工程学院河南开封475004 河南大学国际教育学院河南开封475001 西安微电子技术研究所西安710054

提出一种基于DA实现的可扩展的阵列结构,通过对阵列的配置使其具有良好的扩展能力以及并行处理的高效特性。该结构与传统的采用ASIC电路的实现方式相比,较好地解决了ASIC电路中阶数、数据字宽不可自适应调整以及存储量需求较大、吞吐量... 详细信息

提出一种基于DA实现的可扩展的阵列结构,通过对阵列的配置使其具有良好的扩展能力以及并行处理的高效特性。该结构与传统的采用ASIC电路的实现方式相比,较好地解决了ASIC电路中阶数、数据字宽不可自适应调整以及存储量需求较大、吞吐量偏低的问题。最后在实现代价和性能方面与典型结构进行了比较,证明了该结构存储量需求小,运算时间少,具有较好的性价比。

关键词：分布算术并行DA PE阵列前缀求和

Influence of Isospin Dependence of In-Medium NN Cross Sections on Emitted Neutron to Proton Ratio in HICs

在线全文

学校读者我要写书评

暂无评论

Influence of Isospin Dependence of In-Medium NN Cross Sectio...

作者： JIA Yi-jian zhang ying-xun LI Zhu-xia LU Xiao-hua WU Xi-zhen ZHAO Kai

The equation of state for isospin asymmetry nuclear matter is related to many areas,such as nuclear structure and reactions for isospin asymmetry nuclei and the properties and the evolution of neutron stars. But the behavior of the density dependence of the asymmetry nuclear equation of state is poorly known. So,constraining the density dependence of the isospin asymmetry nuclear equation of state becomes a hot topic in heavy ion collisions and stimulates lot of theorists and experimentalists to explore ***,

关键词：