检索结果-内蒙古大学图书馆

arXiv 2021年

作者： Nguyen, Cong T. Van Huynh, Nguyen Chu, Nam H. Saputra, Yuris Mulya Hoang, Dinh Thai Nguyen, Diep N. Pham, Quoc-Viet Niyato, Dusit Dutkiewicz, Eryk Hwang, Won-Joo School of Electrical and Data Engineering University of Technology Sydney SydneyNSW2007 Australia Research Institute of Computer Information and Communication Pusan National University Busan46241 Korea Republic of School of Computer Science and Engineering Nanyang Technological University Singapore639798 Singapore Department of Biomedical Convergence Engineering Pusan National University Yangsan50612 Korea Republic of

With outstanding features, Machine Learning (ML) has become the backbone of numerous applications in wireless networks. However, the conventional ML approaches face many challenges in practical implementation, such as the lack of labeled data, the constantly changing wireless environments, the long training process, and the limited capacity of wireless devices. These challenges, if not addressed, can impede the effectiveness and applicability of ML in wireless networks. To address these problems, Transfer Learning (TL) has recently emerged to be a promising solution. The core idea of TL is to leverage and synthesize distilled knowledge from similar tasks as well as from valuable experiences accumulated from the past to facilitate the learning of new problems. Doing so, TL techniques can reduce the dependence on labeled data, improve the learning speed, and enhance the ML methods' robustness to different wireless environments. This article aims to provide a comprehensive survey on applications of TL in wireless networks. Particularly, we first provide an overview of TL including formal definitions, classification, and various types of TL techniques. We then discuss diverse TL approaches proposed to address emerging issues in wireless networks. The issues include spectrum management, localization, signal recognition, security, human activity recognition and caching, which are all important to next-generation networks such as 5G and beyond. Finally, we highlight important challenges, open issues, and future research directions of TL in future wireless networks. © 2021, CC BY-NC-SA.

关键词： Wireless networks

来源：评论

学校读者我要写书评

暂无评论

A Trinuclear Cobalt Complex Containing Pyridine-Based Pincer Ligand: Synthesis, Structural, and Electrocatalytic Oxygen Reduction Studies

SSRN

引用

SSRN 2024年

作者： Manohar, Ezhava Manu Bukhvalov, Danil W. Kan, Dong-Won Han, HyukSu Choi, Hyosung Gaur, Ashish Tothadi, Srinu Roy, Soumalya Joshi, Ankit kumar Bandyopadhyay, Sujoy Das, Sourav Department of Basic Sciences Chemistry Discipline Institute of Infrastructure Technology Research And Management Near Khokhra Circle Maninagar East Gujarat Ahmedabad380026 India Department of Energy Science Sungkyunkwan University Suwon16419 Korea Republic of Department of Chemistry Chonnam National University Hospital 77 Yongbong-ro Buk-gu Gwangju61186 Korea Republic of Analytical and Environmental Sciences Division and Centralized Instrumentation Facility CSIR-Central Salt and Marine Chemicals Research Institute Gijubhai Badheka Marg Bhavnagar364002 India College of Science Institute of Materials Physics and Chemistry Nanjing Forestry University Nanjing210037 China Institute of Physics and Technology Ural Federal University Yekaterinburg620002 Russia School of Energy Systems Engineering Chung-Ang University Seoul06974 Korea Republic of Department of Chemistry Research Institute for Convergence of Basic Science Research Institute for Natural Sciences Hanyang University Seoul04763 Korea Republic of Department of Chemistry Indrashil University Kadi Mehsana Gujarat Rajpur382740 India

The reaction between pentadentate multistage coordinating organic ligands such as 2,2′-[{(1E,1′E)-pyridine-2,6-diyl-bis(methaneylylidene)bis(azaneylylidene)} diphenol] (LH2) with Co(ClO4)***2O in the presence of acetonitrile (MeCN) forms a trinuclear coordination complex, [Co3(L)2(CH3CN)5]∙2ClO4 (1). Single crystal X-ray analysis revealed that complex 1 crystallized in a monoclinic system with space group P2/n (Z = 2). Complex 1 consisted of three CoII metal ions with two deprotonated ligands and two perchlorates as counter-anions. SHAPE analysis studies have shown that CoII has distorted trigonal bipyramidal geometry. Complex 1 demonstrated an electrocatalytic oxygen reduction reaction is 0.52 V at a limiting current density of 1.17 mA cm -2. Furthermore, the Tafel slope was calculated for the catalyst and the obtained Tafel slope was 136 mV dec. The electrocatalytic oxygen reduction was rationalized by DFT studies. © 2024, The Authors. All rights reserved.

关键词： Pyridine

来源：评论

学校读者我要写书评

暂无评论

Gum based functional binder for high-performance artificial graphite anode for lithium-ion batteries

Sustainable Chemistry for the Environment

引用

Sustainable Chemistry for the Environment 2023年 2卷

作者： Chang, Joon Ha Pin, Min Wook Choi, Jiman Park, Jaewon Choi, Gyeong Min Yun, Jeongsik Cho, Kie Yong Chandio, Zubair Ahmed Kim, Inhye Kim, Youngjin Padil, Vinod V.T. Cheong, Jun Young LiB Materials Research Group Secondary Battery Materials Research Laboratory Research Institute of Industrial Science and Technology (RIST) 67 Cheongam-ro Pohang 37673 South Korea Industrial Materials R&D Group Korea Institute of Industrial Technology Incheon 21999 South Korea Quantum Technology Institute Korea Research Institute of Standards and Science Daejeon 34113 South Korea Department of Industrial Chemistry Pukyong National University 45 Yongso-ro Nam-gu Busan 48513 South Korea Bavarian Center for Battery Technology (BayBatt) and Department of Chemistry University of Bayreuth Universitätsstraße 30 Bayreuth 95447 Germany Department of Battery Convergence Engineering Kangwon National University Chuncheon 24341 South Korea Amrita School for Sustainable Development (AST) Amrita Vishwa Vidyapeetham Amrita University Amritapuri Kerala Kollam India

Artificial graphite (AG), in contrast to natural graphite, has received much attention due to its superior rate capabilities and stability under high current density. Although the rate capabilities can be enhanced by employing artificial graphite, there is room for improvement in the cycle retention characteristics of artificial graphite. In particular, further optimization on the binder type on anodes is necessary, as commercially used polyvinylidene fluoride (PVdF) has limitations in long-term cycling stability. Furthermore, PVdF is dissolved in N-Methyl-2-pyrrolidone (NMP), which is not environmentally- and eco-friendly. In this work, we have introduced a water-soluble binder based on deacetylated kondagogu gum (KG) for AG anodes, which are derived from the gum tree. Upon deacetylation, kondagogu gum can be dissolved in water, which can be directly used together with active materials and conductive agents in a slurry. Replacing a PVdF binder with a KG binder results in an enhanced cycle retention and comparable rate capabilities, without the changes in the overall redox reactions with Li⁺. Postmortem analysis reveals that the improved electrochemical performance of the AG anode contributed to the excellent structural integrity of the KG binder compared with the PVdF binder. © 2023 The Author(s)

关键词： Anode Binder Graphite Kondagogu gum Lithium

来源：评论

学校读者我要写书评

暂无评论

Adaptive Modification of Fading Channel Models for Terrestrial SFN Environments

Adaptive Modification of Fading Channel Models for Terrestri...

引用

IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB)

作者： Sungjun Ahn Seok-Ki Ahn Sung-Ik Park Jeongchang Kim Sungho Jeon Mats Ek Sesh Simha Mark Aitken Anindya Saha Prashant M. Maru Parag Naik Joonhyuk Kang Media Research Division Electronics and Telecommunications Research Institute (ETRI) Yuseong-gu South Korea School of Electrical Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon South Korea Interdisciplinary Major of Maritime AI Convergence the Division of Electronics and Electrical Information Engineering Korea Maritime and Ocean University Busan South Korea Media Transmission Department Korean Broadcasting System Seoul South Korea Progira Radio Communication AB Luleå Sweden ONE Media 3.0 Sinclair Broadcast Group Inc. Hunt Valley MD USA Saankhya Labs Bengaluru India

This paper introduces a model modification procedure to adapt single-frequency network (SFN) channel models to the receiver directivity. The presented work is a sequel of [1], extending the modeling framework in a parametrically adjustable form. Behind this extension, it is remarked that channel fading in SFNs can be realized differently if the receiver changes antenna beam pattern or orientation. To reflect this aspect, the proposed method recalculates the channel response gain of each signal incidence as dependent on the network’s geometric layout and antenna directivity figure. By virtue of this reconfiguration ability, measurement-driven SFN channel models acquire an extra capability of more realistic simulations on various transmission scenarios. The existing channel characterization and modeling results would accordingly become more versatile, possibly beyond digital television use cases. For explicit demonstration, we present a modification example of S 3 -Extended model.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Effect of heat treatment on the intermetallic phase transformation and corrosion performance of Zn-Al-Mg alloy coated steel sheets in chloride-containing environments

引用

Journal of Alloys and Compounds 2025年 1036卷

作者： Sang-Hee Kim Jeong-Min Choi Sang-heon Kim Jun Kang Myeong-Hoon Lee Min-Suk Oh Yong-Sup Yun Korea Institute of Corrosion Science & Technology National Korea Maritime and Ocean University Busan 49112 Republic of Korea Division of Marine Engineering National Korea Maritime and Ocean University Busan 49112 Republic of Korea M.E.C. Co. LTD. Technical Research Laboratories Gwangyang 57714 Republic of Korea Division of Marine System Engineering National Korea Maritime and Ocean University Busan 49112 Republic of Korea Division of Advanced Materials Engineering Department of Energy Storage/Conversion Engineering of Graduate School Jeonbuk National University Jeonju 54896 Republic of Korea Division of Coast Guard Studies National Korea Maritime and Ocean University Busan 49112 Republic of Korea

A heat-treated Zn-Al-Mg alloy-coated steel sheet is studied to investigate its corrosion resistance in chloride-containing environments. The study focuses on the intermetallic phase transformation and its influence on corrosion performance. Corrosion resistance is evaluated using salt spray tests and electrochemical tests, along with an analysis of corrosion product formation. The heat treatment facilitates the transformation of MgZn₂ to Mg₂Zn₁₁, resulting in a more balanced area distribution between Zn and Mg₂Zn₁₁ phases. This structural balance promotes the formation of a protective Zn₅(OH)₈Cl₂·H₂O layer on the surface. This protective layer acts as an effective barrier to chloride ions, preventing further corrosion. These findings demonstrate that heat treatment enhances the durability and corrosion resistance of Zn-Al-Mg alloy-coated steel sheets by stabilizing the surface structure and promoting the formation of corrosion-resistant phases.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Enzymatic depolymerization of polyethylene using a small laccase and its potential for bio-upcycling

引用

Journal of Hazardous Materials 2025年 495卷

作者： Hyeoncheol Francis Son Sungmin Hwang Yujin Kim Jung Ho Ahn Ja Kyong Ko Gyeongtaek Gong Youngsoon Um Jong Hyuk Park Hyun June Park Sun-Mi Lee School of Biological Sciences and Biotechnology Graduate School Chonnam National University Gwangju 61186 Republic of Korea School of Biological Sciences and Technology Chonnam National University Gwangju 61186 Republic of Korea Institute of Synthetic Biology for Carbon Neutralization Chonnam National University Gwangju 61186 Republic of Korea Institute of Systems Biology and Life Science Informatics Chonnam National University Gwangju 61186 Republic of Korea Division of Convergence on Marine Science Korea Maritime & Ocean University Busan 49112 Republic of Korea Clean Energy Research Center Korea Institute of Science and Technology Seoul 02792 Republic of Korea Convergence Research Center for Solutions to Electromagnetic Interference in Future-mobility Korea Institute of Science and Technology Seoul 02792 Republic of Korea Department of Biotechnology Duksung Women’s University Seoul 01369 Republic of Korea Division of Environmental Science and Ecological Engineering Korea University Seoul 02841 Republic of Korea

Polyethylene (PE) plastics present significant environmental challenges due to their recalcitrant nature and widespread usage. This study explores the biological degradation of PE using a novel enzyme, small laccase from Amycolatopsis sp. ATCC 39116 (ASLAC). Among four selected laccases, ASLAC demonstrated the highest biomass production using PE as a carbon source when expressed by Yarrowia lipolytica . Surface analysis of PE films treated with purified ASLAC, using scanning electron microscopy (SEM) and atomic force microscopy (AFM), revealed substantial degradation of the material. The degradation products were successfully utilized by Y. lipolytica , underscoring its potential for converting PE into bioenergy. Structural analysis and molecular docking simulations revealed that the substrate binding site of ASLAC, characterized by a hydrophobic planner configuration, is highly optimized for binding and cleaving PE polymers. This unique structure distinguishes it from other laccases with narrower or obstructed binding sites. Phylogenetic analysis of 311 small laccase sequences classified ASLAC into the Type-Ia subgroup, which exhibited superior potential for PE degradation. This study establishes ASLAC as a promising biocatalyst for sustainable PE management, providing a foundation for future applications in bioremediation and polymer upcycling.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Corrigendum to “Effects of hydrogen mixture ratio and scavenging air temperature on combustion and emission characteristics of a 2-stroke marine engine” [Energy Rep. 9 (2023) 195–216]

引用

Energy Reports 2023年 9卷 1886-1886页

作者： Van Chien Pham Jun-Soo Kim Won-Ju Lee Jae-Hyuk Choi Division of Marine System Engineering Korea Maritime and Ocean University 727 Taejong-ro Yeongdo-gu Busan 49112 Republic of Korea Korea Institute of Maritime and Fisheries Technology 367 Haeyang-ro Yeongdo-gu Busan 49111 Republic of Korea Interdisciplinary Major of Maritime AI Convergence Korea Maritime and Ocean University 727 Taejong-ro Yeongdo-gu Busan 49112 Republic of Korea

来源：评论

学校读者我要写书评

暂无评论

Blockchain for Edge of Things: Applications, Opportunities, and Challenges

arXiv

引用

arXiv 2021年

作者： Reddy Gadekallu, Thippa Pham, Quoc-Viet Nguyen, Dinh C. Reddy Maddikunta, Praveen Kumar Deepa, N. Prabadevi, B. Pathirana, Pubudu N. Zhao, Jun Hwang, Won-Joo The School of Information Technology and Engineering Vellore Institute of Technology Tamilnadu India The Korean Southeast Center for the 4th Industrial Revolution Leader Education Pusan National University Busan46241 Korea Republic of The School of Engineering Deakin University Waurn PondsVIC3216 Australia The Data61 CSIRO DocklandsMelbourne Australia The School of Computer Science and Engineering Nanyang Technological University 50 Nanyang Avenue 639798 Singapore The Department of Biomedical Convergence Engineering Pusan National University Yangsan50612 Korea Republic of

—In recent years, blockchain networks have attracted significant attention in many research areas beyond cryptocurrency, one of them being the Edge of Things (EoT) that is enabled by the combination of edge computing and the Internet of Things (IoT). In this context, blockchain networks enabled with unique features such as decentralization, immutability, and traceability, have the potential to reshape and transform the conventional EoT systems with higher security levels. Particularly, the convergence of blockchain and EoT leads to a new paradigm, called BEoT that has been regarded as a promising enabler for future services and applications. In this paper, we present a state-of-the-art review of recent developments in BEoT technology and discover its great opportunities in many application domains. We start our survey by providing an updated introduction to blockchain and EoT along with their recent advances. Subsequently, we discuss the use of BEoT in a wide range of industrial applications, from smart transportation, smart city, smart healthcare to smart home and smart grid. Security challenges in BEoT paradigm are also discussed and analyzed, with some key services such as access authentication, data privacy preservation, attack detection, and trust management. Finally, some key research challenges and future directions are also highlighted to instigate further research in this promising area. © 2021, CC BY-NC-SA.

关键词： Edge computing

来源：评论

学校读者我要写书评

暂无评论

2D Sn halide perovskite transistors with interface-enhancing organic molecules via side group modulation

引用

Nano Energy 2025年 142卷

作者： Hakjun Kim Juan Anthony Prayogo Bum Ho Jeong Dong Ryeol Whang Dong Wook Chang Hui Joon Park Department of Organic and Nano Engineering & Human-Tech Convergence Program Hanyang University Seoul 04763 Republic of Korea Human-Tech Convergence Program Hanyang University Seoul 04763 Republic of Korea Department of Energy and Chemical Materials Engineering and CECS Core Research Institute Pukyong National University Busan 48513 Republic of Korea Department of Advanced Materials Hannam University Daejeon 34054 Republic of Korea Department of Semiconductor Engineering Hanyang University Seoul 04763 Republic of Korea Institute of Nano Science and Technology Hanyang University Seoul 04763 Republic of Korea

Tin (Sn) halide perovskites have emerged as promising lead-free candidates for thin-film transistor (TFT) channels due to their low effective mass and reduced carrier scattering. However, their inherent instability and susceptibility to oxidation—which generates defects and degrades film quality—have limited their practical application. In this study, we demonstrate that molecular interlayers with defect-passivating functional groups improve film quality and reduce oxidation in Sn halide perovskites. Moreover, by modulating their dipole moments, these interlayers lower the energy barrier between the perovskite and the source/drain contacts, facilitating charge transport. Consequently, an interface-modified p-channel PEA 2 SnI 4 TFT achieves exceptional performance, with a field-effect mobility of 14.89 cmVs, an on/off ratio of 9.87 × 10 6 , reduced hysteresis, and outstanding reproducibility and operational stability—attributes essential for low-energy-consumption, CMOS-like electronics.

关键词： Defect passivation Field-effect transistor Interlayer Molecular design Tin halide perovskite

来源：评论

学校读者我要写书评

暂无评论

Ultimate Strength Assessment of Steel-Welded Hemispheres under External Hydrostatic Pressure

引用

Journal of marine science and Application 2020年第4期19卷 615-633页

作者： Sang-Rai Cho Teguh Muttaqie Seung Hyun Lee Jaewoo Paek Jung Min Sohn Ulsan Lab Inc.UlsanSouth Korea School of Naval Architecture and Ocean Engineering University of UlsanUlsanSouth Korea Department of Naval Architecture and Marine Systems Engineering Pukyong National UniversityBusanSouth Korea Agency for the Assessment and Application of Technology Center of Technology for Defense and Security Industries-BPPTJakartaIndonesia Hyundai Mipo Dockyard UlsanSouth Korea Hyundai Heavy Industries UlsanSouth Korea Interdisciplinary Program of Marine Convergence Design Pukyong National UniversityBusanSouth Korea

This paper focusses on steel-welded hemispherical shells subjected to external hydrostatic *** experimental and numerical investigations were performed to study their failure *** model was fabricated from mild steel and made through press forming and *** therefore considered the effect of initial shape imperfection,variation of thickness and residual stress obtained from the actual *** hemisphere models designed with R/t from 50 to 130 were tested until *** to the test,the actual geometric imperfection and shell thickness were carefully *** comparisons of available design codes(PD 5500,ABS,DNV-GL)in calculating the collapse pressure were also highlighted against the available published test data on steel-welded ***,the nonlinear FE simulations were also conducted to substantiate the ultimate load capacity and plastic deformation of the models that were *** dependence of the level of sphericity,varying thickness and residual welding stresses were also numerically considered in the benchmark *** structure behaviour from the experiments was used to verify the numerical *** this work,both collapse pressure and failure mode in the numerical model were consistent with the experimental model.

关键词： Steel-welded hemisphere Collapse pressure Experiment Nonlinear FEA Ultimate strength formulation

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：