检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

无罪推定的逻辑形式

中山大学学报（社会科学版） 2006年第1期46卷 77-80页

作者：梁庆寅罗仕国中山大学逻辑与认知研究所哲学系广东广州510275

文章区分了3种关系———事实关系、认知关系和法律拟制关系,认为无罪推定是一种法律拟制,而不是单纯的认知活动。同时对无罪推定的逻辑形式进行了分析,分析表明,无罪推定的逻辑形式是一种正确的逻辑论证,而不是“以无知为据”的错误论... 详细信息

文章区分了3种关系———事实关系、认知关系和法律拟制关系,认为无罪推定是一种法律拟制,而不是单纯的认知活动。同时对无罪推定的逻辑形式进行了分析,分析表明,无罪推定的逻辑形式是一种正确的逻辑论证,而不是“以无知为据”的错误论证,无罪推定并不违反实事求是原则。

关键词：无罪推定认知关系法律拟制关系逻辑形式

双级PFC AC/DC变流器的设计及电路实验

在线全文

学校读者我要写书评

暂无评论

电力电子技术 2007年第8期41卷 13-15页

作者：高潮罗世国深圳信息职业技术学院广东深圳518029 佛罗里达州中部大学美国奥兰多32816

系统并深入地分析了单级和双级功率因数校正(Power Factor Correction,简称PFC)AC/DC变流器的性能特征,指出了它们各自存在的优缺点。在此基础上,结合软开关技术特点,提出了一种基于集成化设计的双级PFC AC/DC开关变流器电路。该电路克... 详细信息

系统并深入地分析了单级和双级功率因数校正(Power Factor Correction,简称PFC)AC/DC变流器的性能特征,指出了它们各自存在的优缺点。在此基础上,结合软开关技术特点,提出了一种基于集成化设计的双级PFC AC/DC开关变流器电路。该电路克服了传统单级和双级变流器存在的不足,具有高效、高功率因数和低成本的特点。此外,还给出了该电路的实验结果。

关键词：变流器功率因数集成电路

Effect of Nb-V microalloying on the hot deformation behavior of medium Mn steels

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 360-368页

作者： Yumeng Wang Qinyi guo Bin Hu Haiwen luo School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China

The influence of Nb-V microalloying on the hot deformation behavior and microstructures of medium Mn steel(MMS)was investigated by uniaxial hot compression *** establishing the constitutive equations for simulating the measured flow curves,we successfully constructed deformation activation energy(Q)maps and processing maps for identifying the region of flow *** concluded the following consequences of Nb-V alloying for MMS.(i)The critical strain increases and the increment diminishes with the increasing deformation temperature,suggesting that NbC precipitates more efficiently retard dynamic recrystallization(DRX)in MMS compared with solute Nb.(ii)The deformation activation energy of MMS is significantly increased and even higher than that of some reported high Mn steels,suggesting that its ability to retard DRX is greater than that of the high Mn content.(iii)The hot workability of MMS is improved by narrowing the hot processing window for the unstable flow stress,in which fine recrystallized and coarse unrecrystallized grains are present.

关键词： medium manganese steel niobium-vanadium microalloying flow behavior dynamic recrystallization hot workability

在线全文

学校读者我要写书评

暂无评论

走出形式化的困境

河池师专学报 2003年第3期23卷 8-10,33页

作者：罗仕国河池师专广西宜州546300

逻辑的形式化是对自然语言推理的程式化、模式化、符号化 ,其实质是精确化、抽象化。抽象化到一定界限 ,它会脱离自然语言实际。实质蕴涵怪论、道义逻辑中的罗斯悖论以及认知逻辑中的厄勒克特拉悖论 ,都是抽象化、形式化的结果。要消除... 详细信息

逻辑的形式化是对自然语言推理的程式化、模式化、符号化 ,其实质是精确化、抽象化。抽象化到一定界限 ,它会脱离自然语言实际。实质蕴涵怪论、道义逻辑中的罗斯悖论以及认知逻辑中的厄勒克特拉悖论 ,都是抽象化、形式化的结果。要消除这些悖论 ,摆脱形式化的困境 ,就要由抽象回到具体 ,回归自然语言 ,研究自然语言概念、命题及推理的具体用法。

关键词：形式化抽象化形式语言自然语言悖论

Interfacial Zn2+-solvation regulator towards reversible and stable Zn anode

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 684-692页

作者： Miao Zhou Xiongbin luo Hang Li Shan guo Zhuang Tong Xiaotao Zhou Xu Li Zhaohui Hou Shuquan Liang guozhao Fang College of Mechanical Engineering Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials Hunan Institute of Science and Technology School of Materials Science and Engineering Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province Central South University College of Materials and Metallurgy Guizhou University National Energy Metal Resources and New Materials Key Laboratory Central South University

Aqueous zinc-ion batteries （AZIBs） are fundamentally challenged by the instability of the electrode/electrolyte interface,predominantly due to irreversible zinc （Zn） deposition and hydrogen ***,the intricate mechanisms behind the electrochemical discrepancies induced by interfacial Zn2+-solvation and deposition behavior demand comprehensive *** molecules endowed with special functional groups （such as hydroxyl,carboxyl,etc.） have the potential to significantly optimize the solvation structure of Zn2+and regulate the interfacial electric double layer （EDL）.By increasing nucleation overpotential and decreasing interfacial free energy,these functional groups facilitate a lower critical nucleation radius,thereby forming an asymptotic nucleation model to promote uniform Zn ***,this study presents a pioneering approach by introducing trace amounts of n-butanol as solvation regulators to engineer the homogenized Zn （H-Zn） anode with a uniform and dense *** interfacial reaction and structure evolution are explored by in/ex-situ experimental techniques,indicating that the H-Zn anode exhibits dendrite-free growth,no by-products,and weak hydrogen evolution,in sharp contrast to the bare ***,the H-Zn anode achieves a remarkable Zn utilization rate of approximately 20% and simultaneously sustains a prolonged cycle life exceeding 500 ***,the H-Zn//NH4V4O10（NVO） full battery showcases exceptional cycle stability,retaining 95.04%capacity retention after 400 cycles at a large current density of 5 A *** study enlightens solvation-regulated additives to develop Zn anode with superior utilization efficiency and extended operational lifespan.

关键词： Aqueous zinc-ion batteries Interfacial reaction Asymptotic nucleation model Reversible and stable Zn anode

Multiple Tin Compounds Modified Carbon Fibers to Construct Heterogeneous Interfaces for Corrosion Prevention and Electromagnetic Wave Absorption

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第1期17卷 507-527页

作者： Zhiqiang guo Di Lan Zirui Jia Zhenguo Gao Xuetao shi Mukun He Hua guo Guanglei Wu Pengfei Yin College of Science Sichuan Agricultural UniversityYa’an 625014People’s Republic of China School of Materials Science and Engineering Hubei University of Automotive TechnologyShiyan 442002People’s Republic of China Institute of Materials for Energy and Environment State Key Laboratory of Bio‑Fibers and Eco‑TextilesCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071People’s Republic of China Shaanxi Key Laboratory of Macromolecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’anShaanxi 710072People’s Republic of China

Currently,the demand for electromagnetic wave(EMW)absorbing materials with specific functions and capable of withstanding harsh environments is becoming increasingly ***-component interface engineering is considered an effective means to achieve high-efficiency EMW ***,interface modulation engineering has not been fully discussed and has great potential in the field of EMW *** this study,multi-component tin compound fiber composites based on carbon fiber(CF)substrate were prepared by electrospinning,hydrothermal synthesis,and high-temperature thermal *** utilizing the different properties of different substances,rich heterogeneous interfaces are *** effectively promotes charge transfer and enhances interfacial polarization and conduction *** prepared SnS/SnS_(2)/SnO_(2)/CF composites with abundant heterogeneous interfaces have and exhibit excellent EMW absorption properties at a loading of 50 wt%in epoxy *** minimum reflection loss(RL)is−46.74 dB and the maximum effective absorption bandwidth is 5.28 ***,SnS/SnS_(2)/SnO_(2)/CF epoxy composite coatings exhibited long-term corrosion resistance on Q235 steel ***,this study provides an effective strategy for the design of high-efficiency EMW absorbing materials in complex and harsh environments.

关键词： Electrostatic spinning Component regulation Heterogeneous interfaces Electromagnetic wave absorption Corrosion protection

在线全文

学校读者我要写书评

暂无评论

论蕴涵规律在形式逻辑中的基本规律地位

上饶师范学院学报 2003年第1期23卷 100-103页

作者：罗仕国河池师专广西河池546300

在对蕴涵关系规律的内容、要求及公式进行界定的基础上 ,对该规律在形式逻辑中的地位、历史上逻辑学家们对该规律重要地位的认识、它的性质和客观基础问题进行了考察 ,认为蕴涵规律符合作为形式逻辑基本规律的条件 ,应该是除同一律。

关键词：蕴涵规律形式逻辑基本规律地位公式性质客观基础思维理论

在线全文

学校读者我要写书评

暂无评论

基于PEL模型的管理制度评价思考

中南大学学报（社会科学版） 2009年第6期15卷 743-747页

作者：罗仕国孙明湘广西大学公共管理学院广西南宁530004 中南大学政治学与行政管理学院湖南长沙410083

随着社会关系的变革速度的加快,管理制度创新成为一种趋势。对新的管理制度进行一定的评价是必要的。高奇在《科学方法实践》中提出的PEL模型,是提供所需要的预设、证据和逻辑去支持一个给定的科学结论的科学证明模型,也是对科学理论进... 详细信息

随着社会关系的变革速度的加快,管理制度创新成为一种趋势。对新的管理制度进行一定的评价是必要的。高奇在《科学方法实践》中提出的PEL模型,是提供所需要的预设、证据和逻辑去支持一个给定的科学结论的科学证明模型,也是对科学理论进行评价的模型。本文尝试将这一模型运用于管理评价中,分别从管理预设、管理中的制度以及管理论证中的逻辑三个方面对管理制度的科学性评价进行研究。

关键词：管理制度 PEL模型科学性评价

Low‑Temperature Oxidation Induced Phase Evolution with Gradient Magnetic Heterointerfaces for Superior Electromagnetic Wave Absorption

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第1期17卷 191-204页

作者： Zizhuang He Lingzi shi Ran Sun Lianfei Ding Mukun He Jiaming Li Hua guo Tiande Gao Panbo Liu School of Chemistry and Chemical Engineering Northwestern Polytechnical UniversityXi’an 710129People’s Republic of China School of Marine Science and Technology Northwestern Polytechnical UniversityXi’an 710072People’s Republic of China

Gradient magnetic heterointerfaces have injected infinite vitality in optimizing impedance matching,adjusting dielectric/magnetic resonance and promoting electromagnetic(EM)wave absorption,but still exist a significant challenging in regulating local phase ***,accordion-shaped Co/Co_(3)O_(4)@N-doped carbon nanosheets(Co/Co_(3)O_(4)@NC)with gradient magnetic heterointerfaces have been fabricated via the cooperative high-temperature carbonization and lowtemperature oxidation *** results indicate that the surface epitaxial growth of crystal Co_(3)O_(4) domains on local Co nanoparticles realizes the adjustment of magnetic-heteroatomic components,which are beneficial for optimizing impedance matching and interfacial ***,gradient magnetic heterointerfaces simultaneously realize magnetic coupling,and long-range magnetic ***,the synthesized Co/Co_(3)O_(4)@NC absorbents display the strong electromagnetic wave attenuation capability of−53.5 dB at a thickness of 3.0 mm with an effective absorption bandwidth of 5.36 GHz,both are superior to those of single magnetic domains embedded in carbon *** design concept provides us an inspiration in optimizing interfacial polarization,regulating magnetic coupling and promoting electromagnetic wave absorption.

关键词： Magnetic heterointerfaces Phase evolution Interfacial polarization Magnetic coupling Electromagnetic wave absorption