检索结果-南通市图书馆

journal of Library Science in China 2020年 117-126页

作者： Shelia X.WEI ronda j.zhang Howell Y.WANG CAO Cong Fred Y.YE International joint Informatics Laboratory & jiangsu Key Laboratory of Data Engineering and Knowledge Services School of Information Management Nanjing University Nottingham University Business School University of Nottingham

By comparing quantitative ranking with qualitative contributions, we reveal that academic assessment has to put real contributions ahead of quantitative indicators and that rankings have nothing to do with universities’ and their libraries’ true values. The greatness of a university lies in its impacts on the progress for human knowledge and the promotion for social development. Although ranking of universities by way of quantitative indicators can reflect some information, we should pay more attention to qualitative contributions.

关键词：

Measuring academic contributions via keyword analytics

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journal of Library Science in China 2019年 186-187页

作者： Charles C.HUANG Star X.ZHAO BIAN Yangyi ronda j.zhang Helena H.zhang Fred Y.YE 不详

As a tool of logical thinking and derivation,the basic element of language is the *** words reflect concepts,and core concepts construct knowledge,while knowledge evolution contributes to academic *** on the theoretical foundation that keywords in the academic literature characterize concepts,this work attempts to get beyond traditional citation analysis and introduce a framework of academic contribution analysis based on keywords.

关键词： Measuring academic contributions

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中国文科论文的层级结构及量化特征之学术分析

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中国图书馆学报 2020年第4期46卷 85-98页

作者：张家榕晏超韩松涛叶鹰南京大学信息管理学院浙江大学图书馆

中国文科论文与一般科技论文之间存在差异已是共识,而具体差异何在却并未明确,本文旨在探讨文科论文的结构性量化特征。以2013—2018年我国人文社科发表的论文为基础,采用统计方法,以《新华文摘》《中国社会科学文摘》《高等学校文科学... 详细信息

中国文科论文与一般科技论文之间存在差异已是共识,而具体差异何在却并未明确,本文旨在探讨文科论文的结构性量化特征。以2013—2018年我国人文社科发表的论文为基础,采用统计方法,以《新华文摘》《中国社会科学文摘》《高等学校文科学术文摘》所转载的论文作为第一层级,《复印报刊资料》所转载的论文作为第二层级,《中文社会科学引文索引》(CSSCI)所索引的论文作为第三层级,CNKI入库所有人文社科论文作为第四层级,概括中国人文社科论文的层级结构;其中,第一层级论文仅占总入库量的0.21%,第二层级占0.66%,第三层级占4.9%,说明这种层级结构对于全部论文有着较高的凝练荟萃效用;进而分析这种层级结构对学术热点的关注特征,并探讨其在学科、机构、期刊评价中的潜在应用前景。研究发现:各机构被转载论文情况符合幂律,具有高度不平衡性;CSSCI收录的期刊论文占高层级转载论文的七成左右,非C刊在层级结构中也有一定贡献;高层级文摘类期刊转载论文学科偏好不尽相同,各校各学科被转载论文比例存在差异性;三大文科文摘能够很好地把握热点前沿,各文摘类在理论性、实践性和可读性方面也有不同特点。本文结果可望为洞悉和评价中国文科研究成果提供一个综合参照系,从而有效发挥中国文科论文独特层级结构的学术评价功能。图6。表6。参考文献27。

关键词：人文社会科学层级结构量化特征三大文摘人大复印报刊资料 CSSCI CNKI

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元宇宙研究的理论原则与实用场景探讨

中国图书馆学报 2022年第6期48卷 6-15页

作者：赵星乔利利张家榕张慧叶鹰华东师范大学元宇宙与数智人实验室复旦大学国家智能评价与治理实验基地复旦大学元宇宙与虚实交互联合研究院元宇宙与虚实交互联合研究院南京大学信息管理学院上海大学文化遗产与信息管理学院

围绕热点“元宇宙”的研究和讨论正风靡各界，而研讨其理论原则与实用场景至关重要。本文以逻辑方法分析元宇宙研究的理论原则与实用场景，提出元宇宙研究的三大理论原则：虚实互动原则、技术互联原则、人文互利原则，并在实用场景中选... 详细信息

围绕热点“元宇宙”的研究和讨论正风靡各界，而研讨其理论原则与实用场景至关重要。本文以逻辑方法分析元宇宙研究的理论原则与实用场景，提出元宇宙研究的三大理论原则：虚实互动原则、技术互联原则、人文互利原则，并在实用场景中选择三类典型场景对应讨论了理论原则与实践应用。本文阐明了元宇宙研究的理论意义与应用场景价值，特别指出图书馆元宇宙作为一种实用场景对图书情报领域的重要意义。图3。表1。参考文献22。

关键词：元宇宙元宇宙理论产业元宇宙科教元宇宙政务元宇宙图书馆元宇宙

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测量学术贡献的关键词分析法探析

中国图书馆学报 2019年第6期45卷 84-99页

作者：黄晨赵星卞杨奕张家榕张慧叶鹰浙江大学图书馆华东师范大学信息管理系南京大学信息管理学院

语言作为逻辑思维和推理工具,其基本要素是语词。重要语词映射成概念,核心概念建构知识,而知识演进促成学术发展。本文以学术文献中的关键词作为概念演化基础,尝试超越传统引文分析法探讨测量学术贡献的关键词分析法。研究发现以一个学... 详细信息

语言作为逻辑思维和推理工具,其基本要素是语词。重要语词映射成概念,核心概念建构知识,而知识演进促成学术发展。本文以学术文献中的关键词作为概念演化基础,尝试超越传统引文分析法探讨测量学术贡献的关键词分析法。研究发现以一个学科内的关键词向量和关键词流量为基准,可分别定义关键词向量通量谱和累积通量谱的h截断和g截断,构成h核和g核内主流关键词,进而可定义主流率和主流指数,用作测量对主流学术研究之学术贡献的新型学术测评参数。合并CNKI、万方、维普三大中文数据库元数据和WoS、Ei里的中文记录元数据建立了2008—2017年数据支持平台,具体探讨了针对学术团体和学术期刊的中观层面实证案例。本文给出的关键词分析法基础框架重点是挖掘学术主体或客体对主流研究的学术贡献,建议在试用和应用中进一步改良和完善。图5。表5。参考文献23。

关键词：分析法关键词向量关键词流量关键词通量主流率主流指数学术评价

Surface engineering with ionic polymers on membranes for boron removal

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Frontiers of Chemical Science and Engineering 2024年第5期18卷 61-69页

作者： Xiting zhang Chenyi Fang j Paul Chen Sui zhang Department of Chemical and Biomolecular Engineering National University of SingaporeSingapore 117576Singapore Department of Civil and Environmental Engineering National University of SingaporeSingapore 119260Singapore College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060China

Removal of boric acid from seawater and wastewater using reverse osmosis membrane technologies is imperative and yet remains inadequately addressed by current commercial *** research efforts performed post-modification of reverse osmosis membranes to enhance boron rejection,which is usually accompanied by substantial sacrifice in water *** study delves into the surface engineering of low-pressure reverse osmosis membranes,aiming to elevate boron removal efficiency while maintaining optimal salt rejection and water *** were modified by the self-polymerization and co-deposition of dopamine and polystyrene sulfonate at varying ratios and *** surfaces became smoother and more hydrophilic after *** optimum membrane exhibited a water permeability of 9.2±0.1 L·m^(-2)·h^(-1)·bar^(-1),NaCl rejection of 95.8%±0.3%,and boron rejection of 49.7%±0.1% and 99.6%±0.3% at neutral and alkaline pH,*** water permeability is reduced by less than 15%,while the boron rejection is 3.7 times higher compared to the blank *** research provides a promising avenue for enhancing boron removal in reverse osmosis membranes and addressing water quality concerns in the desalination process.

关键词： membrane low-pressure reverse osmosis boron surface engineering

Theoretical and experimental investigations on an X-shaped vibration isolator with active controlled variable stiffness

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Applied Mathematics and Mechanics(English Edition) 2024年第8期45卷 1371-1386页

作者： Zeyu CHAI j.T.HAN Xuyuan SONG jian ZANG Yewei zhang Zhen zhang College of Aerospace Engineering Shenyang Aerospace UniversityShenyang 110136China jacobs School of Engineering University of California San DiegoSan Diego CA 92122U.S.A. Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of EducationNortheastern UniversityShenyang 110819China

A novel X-shaped variable stiffness vibration isolator(X-VSVI)is *** Runge-Kutta method,harmonic balance method,and wavelet transform spectra are introduced to evaluate the performance of the X-VSVI under various *** layer number,the installation angle of the X-shaped structure,the stiffness,and the active control parameters are systematically *** addition,a prototype of the X-VSVI is manufactured,and vibration tests are carried *** results show that the proposed X-VSVI has a superior adaptability to that of a traditional X-shaped mechanism,and shows excellent vibration isolation performance in response to different amplitudes and forms of ***,the vibration isolation efficiency of the device can be improved by appropriate adjustment of parameters.

关键词： bionic vibration isolation X-shaped structure variable stiffness structure nonlinear dynamics prototype experiment

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Thermo-kinetic characteristics on stabilizing hetero-phase interface of metal matrix composites by crystal plasticity finite element method

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journal of Materials Science & Technology 2024年第2期169卷 53-67页

作者： Y.B.zhang S.j.Song F.Liu State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China Analytical&Testing Center Northwestern Polytechnical UniversityXi’an 710072China

Using dislocation-based constitutive modeling in three-dimension crystal plasticity finite element(3D CPFE)simulations,co-deformation and instability of hetero-phase interface in different material systems were herein studied for polycrystalline metal matrix composites(MMCs).Local stress and strain fields in two types of 3layer MMCs such as fcc/fcc Cu-Ag and fcc/bcc Cu-Nb have been predicted under simple compressive ***,more severe strain-induced interface instability can be observed in the fcc/bcc systems than in the fcc/fcc systems upon refining to metallic nanolayered composites(MNCs).By detailed analysis of stress and strain localization,it has been demonstrated that the interface instability is always accompanied by high-stress concentration,i.e.,thermodynamic characteristics,or high strain prevention i.e.,kinetic characteristics,at the hetero-phase *** then follows that the thermodynamic driving forceG and the kinetic energy barrier Q during dislocation and shear banding can be adopted to classify the deformation modes,following the so-called thermo-kinetic *** by inserting a high density of high-energy interfaces into the Cu-Nb composites,such thermo-kinetic integration at the hetero-phase interface allows a successful establishment of MMCs with the high△G-high Q deformation mode,which ensures high hardening and uniform strain distri-bution,thus efficiently suppressing the shear band,stabilizing the hetero-phase interface,and obtaining an exceptional combination in strength and *** hetero-phase interface chosen by a couple of thermodynamics and kinetics can be defined as breaking the thermo-kinetic correlation and has been proposed for artificially designing MNCs.

关键词： Thermodynamics and kinetics Physics-based constitutive modeling Hetero-phase interface Crystal plasticity finite element

Bioactive compounds in Hericium erinaceus and their biological properties:a review

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Food Science and Human Wellness 2024年第4期13卷 1825-1844页

作者： Yue Qiu Genglan Lin Weiming Liu Fuming zhang Robert j.Linhardt Xingli Wang Anqiang zhang College of Food Science and Engineering Zhejiang University of TechnologyHangzhou 310014China Zhejiang Biosan Biotech Co. Ltd.Hangzhou 310052China Department of Chemical and Biological Engineering Center for Biotechnology and Interdisciplinary StudiesRensselaer Polytechnic InstituteTroyNY 12180USA Departments of Chemistry and Chemical Biology and Biomedical Engineering Biological ScienceCenter for Biotechnology and Interdisciplinary StudiesRensselaer Polytechnic InstituteTroyNY 12180USA

Hericium erinaceus is a nutritious edible and medicinal fungi,rich in a variety of functional active ingredients,with various physiological functions such as antioxidation,anticancer,and enhancing *** is also effective in protecting the digestive system and preventing neurodegenerative *** this review paper,we summarize the sources,structures and efficacies of the main active components in *** fruiting body,mycelium,and culture media,and update the latest research progress on their biological activities and the related molecular *** on this information,we provide detailed challenges in current research,industrialization and information on the active ingredients of *** for future studies and new applications of *** are proposed.

关键词： Hericium erinaceus Bioactive compounds Biological activities Antioxidation Neuroprotection Immunoregulation

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A proton birdcage coil integrated with interchangeable single loops for multi-nuclear MRI/MRS

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journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2024年第2期25卷 168-180页

作者： Yi zhang Zhiyan QUAN Feiyang LOU Yujiao FANG Garth j.THOMPSON Gao CHEN Xiaotong zhang Department of Neurosurgery the Second Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhou310009China Key Laboratory of Precise Treatment and Clinical Translational Research of Neurological Diseases Hangzhou310009China MOE Frontier Science Center for Brain Science and Brain-machine Integration Zhejiang UniversityHangzhou310058China Interdisciplinary Institute of Neuroscience and Technology College of Biomedical Engineering&Instrument ScienceZhejiang UniversityHangzhou310027China School of Medicine Zhejiang UniversityHangzhou310020China iHuman Institute School of Life Science and TechnologyShanghaiTech UniversityShanghai201210China College of Electrical Engineering Zhejiang UniversityHangzhou310027China

Energy metabolism is fundamental for *** encompasses the utilization of carbohydrates,lipids,and proteins for internal processes,while aberrant energy metabolism is implicated in many *** the present study,using three-dimensional(3D)printing from polycarbonate via fused deposition modeling,we propose a multi-nuclear radiofrequency(RF)coil design with integrated 1H birdcage and interchangeable X-nuclei(^(2)H,^(13)C,^(23)Na,and^(31)P)single-loop coils for magnetic resonance imaging(MRI)/magnetic resonance spectroscopy(MRS).The single-loop coil for each nucleus attaches to an arc bracket that slides unrestrictedly along the birdcage coil inner surface,enabling convenient switching among various nuclei and animal *** to a commercial 1H birdcage coil,the proposed 1H birdcage coil exhibited superior signal-excitation homogeneity and imaging signal-to-noise ratio(SNR).For X-nuclei study,prominent peaks in spectroscopy for phantom solutions showed excellent SNR,and the static and dynamic peaks of in vivo spectroscopy validated the efficacy of the coil design in structural imaging and energy metabolism detection simultaneously.

关键词： Energy metabolism Magnetic resonance imaging(MRI) Magnetic resonance spectroscopy(MRS) Multi-nuclear Radiofrequency coil Three-dimensional(3D)printing