检索结果-内蒙古大学图书馆

SSRN 2023年

作者： Song, Sehwan Lee, Dooyong Son, Yeongjun Choi, Yesul Kim, Jiwoong Han, Seunghoon Lee, Jisung Kim, Seokjun Jeong, Seung Gyo Lim, Si-Heon Yan, Jiafeng Kim, Songkil Choi, Woo Seok Kim, Hyun-Ho Kim, Jaeyong Bae, Jong-Seong Takesue, Naoshia Hwang, Chanyong Park, Sungkyun Department of Physics Pusan National University Busan46241 Korea Republic of Korea Basic Science Institute Korea Republic of Center for Scientific Instrumentation Korea Basic Science Institute Daejeon34133 Korea Republic of School of Mechanical Engineering Pusan National University Busan46241 Korea Republic of Department of Physics Sungkyunkwan University Suwon16419 Korea Republic of Department of Energy Engineering Convergence School of Materials Science and Engineering Kumoh National Institute of Technology Gumi39177 Korea Republic of Department of Physics Institute for High Pressure Hanyang University Seoul04763 Korea Republic of Busan Center Korea Basic Science Institute Busan46742 Korea Republic of Dearptement of Applied Physics Fukuoka University Fukuoka814-0180 Japan Quantum Spin Team Korea Research Institute of Standards & Science Daejeon34113 Korea Republic of

Vanadium oxides, such as V2O3, VO2, and V2O5, have attracted considerable attention because of the fascinating physical properties of each oxidation state. On the other hand, controlling the individual oxidation states precisely is difficult because of the sensitivity of oxygen stoichiometry. This paper reports that reactive oxygen annealing (ROA) can systematically change the oxidation state of the vanadium oxide films grown on a c-Al2O3 substrate. Structural, electrical, and chemical analysis confirmed the evolution of the vanadium oxide phase from V2O3 to V2O3/VO2, VO2, VO2/V2O5, and V2O5, showing that the ROA method could precisely control and tune the oxidation state of the high oxygen-sensitive multivalent metallic oxides. © 2023, The Authors. All rights reserved.

关键词： Vanadium dioxide

来源：评论

学校读者我要写书评

暂无评论

Eco-engineering approaches for ocean negative carbon emission

引用

science Bulletin 2022年第24期67卷 2564-2573,M0004页

作者： Chuanlun Zhang Tuo Shi Jihua Liu Zhili He Helmuth Thomas Hailiang Dong Buki Rinkevich Yuze Wang Jung-Ho Hyun Markus Weinbauer Celeste López-Abbate Qichao Tu Shucheng Xie Youhei Yamashita Pavel Tishchenko Quanrui Chen Rui Zhang Nianzhi Jiao Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Shenzhen Key Laboratory of Marine Geo-Omics Research Southern University of Science and TechnologyShenzhen 518055China Institute of Marine Science and Technology Shandong UniversityQingdao 266237China Environmental Microbiomics Research Center School of Environmental Science and EngineeringSouthern Marine Science and Engineering Guangdong LaboratorySun Yat-sen UniversityZhuhai 510006China Helmholtz-Center Hereon Institute of Carbon CyclesGeesthacht D-21502Germany Center for Geomicrobiology and Biogeochemistry Research State Key Laboratory of Biogeology and Environmental GeologyChina University of GeosciencesBeijing 100083China Israel Oceanographic&Limnological Research National Institute of OceanographyHaifa Tel Shikmona 3109701Israel Department of Ocean Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Department of Marine Science and Convergence Engineering Hanyang University ERICA CampusAnsanGyeonggi-do 15588South Korea Laboratoire d’Océanographie de Villefranche(LOV) Sorbonne Université-CNRS UMR7093Institut de la Mer de Villefranche(IMEV)Villefranche BP28France Instituto Argentino de Oceanografía Consejo Nacional de Investigaciones Científicas y TécnicasBahía Blanca 8000Argentina State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesWuhan 430074China Faculty of Environmental Earth Science Hokkaido UniversityHokkaido 060-0810Japan V.I.Il’ichev Pacific Oceanological Institute Far Eastern BranchRussian Academy of SciencesVladivostok 690041Russia State Key Laboratory of Marine Environmental Science Institute of Marine Microbes and EcospheresCollege of Ocean and Earth SciencesXiamen UniversityXiamen 361102China

The goal of achieving carbon neutrality in the next 30-40 years is approaching worldwide consensus and requires coordinated efforts to combat the increasing threat of climate *** main sets of actions have been proposed to address this grand *** is to reduce anthropogenic CO2emissions to the atmosphere,and the other is to increase carbon sinks or negative emissions,i.e.,removing CO2from the *** we advocate eco-engineering approaches for ocean negative carbon emission(ONCE),aiming to enhance carbon sinks in the marine *** international program is being established to promote coordinated efforts in developing ONCE-relevant strategies and methodologies,taking into consideration ecological/biogeochemical processes and mechanisms related to different forms of carbon(inorganic/organic,biotic/abiotic,particulate/dissolved) for *** focus on marine ecosystem-based approaches and pay special attention to mechanisms that require transformative research,including those elucidating interactions between the biological pump(BP),the microbial carbon pump(MCP),and microbially induced carbonate precipitation(MICP).Eutrophic estuaries,hypoxic and anoxic waters,coral reef ecosystems,as well as aquaculture areas are particularly considered in the context of efforts to increase their capacity as carbon *** approaches are thus expected to be beneficial for both carbon sequestration and alleviation of environmental stresses.

关键词： Carbon neutrality Ocean negative carbon emission Biological pump Microbial carbon pump Microbially induced carbonate precipitation Ocean alkalinity

来源：评论

学校读者我要写书评

暂无评论

Applications of Distributed Machine Learning for the Internet-of-Things: A Comprehensive Survey

arXiv

引用

arXiv 2023年

作者： Le, Mai Huynh-The, Thien Do-Duy, Tan Vu, Thai-Hoc Hwang, Won-Joo Pham, Quoc-Viet The Department of Information Convergence Engineering Pusan National University Busan46241 Korea Republic of The School of Computer Science and Statistics Trinity College Dublin The University of Dublin D02 PN40 Ireland The Department of Computer and Communication Engineering Ho Chi Minh City University of Technology and Education Viet Nam The Department of Electrical Electronic and Computer Engineering University of Ulsan Ulsan44610 Korea Republic of The Department of Biomedical Convergence Engineering Pusan National University Yangsan50612 Korea Republic of The School of Computer Science and Statistics Trinity College Dublin The University of Dublin DublinD02 PN40 Ireland

The emergence of new services and applications in emerging wireless networks (e.g., beyond 5G and 6G) has shown a growing demand for the usage of artificial intelligence (AI) in the Internet of Things (IoT). However, the proliferation of massive IoT connections and the availability of computing resources distributed across future IoT systems have strongly demanded the development of distributed AI for better IoT services and applications. Therefore, existing AI-enabled IoT systems can be enhanced by implementing distributed machine learning (aka distributed learning) approaches. This work aims to provide a comprehensive survey on distributed learning for IoT services and applications in emerging networks. In particular, we first provide a background of machine learning and present a preliminary to typical distributed learning approaches, such as federated learning, multi-agent reinforcement learning, and distributed inference. Then, we provide an extensive review of distributed learning for critical IoT services (e.g., data sharing and computation offloading, localization, mobile crowdsensing, and security and privacy) and IoT applications (e.g., smart healthcare, smart grid, autonomous vehicle, aerial IoT networks, and smart industry). From the reviewed literature, we also present critical challenges of distributed learning for IoT and propose several promising solutions and research directions in this emerging area. Copyright © 2023, The Authors. All rights reserved.

关键词： Internet of things

来源：评论

学校读者我要写书评

暂无评论

Dietary inclusion effect of yacon, ginger, and blueberry on growth, body composition, and disease resistance of juvenile black rockfish (Sebastes schlegeli) against Vibrio anguillarum

引用

Fisheries and Aquatic sciences 2020年第1期23卷 1-8页

作者： Lee, Ki Wook Jeong, Hae Seung Cho, Sung Hwoan East Sea Fisheries Research Institute National Institute of Fisheries Science Gangwon-do 25435 South Korea Department of Convergence Study on the Ocean Science and Technology Korea Maritime and Ocean University Busan 49112 South Korea Division of Marine Bioscience Korea Maritime and Ocean University Busan 49112 South Korea

Background: To minimize the use of antibiotics and to obtain a more sustainable fish culture and aquaculture industry, development of alternative natural source of immunostimulant to replace antibiotic in aquafeed is highly needed. Objective: Dietary inclusion effect of yacon (YC), ginger (GG), and blueberry (BB) on growth, body composition, and disease resistance of black rockfish against Vibrio anguillarum was compared to ethoxyquin (EQ). Methods: Four hundred eighty juvenile (an initial weight of 4.2 g) fish were randomly distributed into 12 of 50 L flow-through tanks (forty fish per tank). Four experimental diets were prepared;the control (Con) diet with 0.01% EQ inclusion, and YC, GG, and BB diets at 1% each additive inclusion. Each additive was included into the experimental diets at the expense of wheat flour. Each diet was assigned to triplicate tanks of fish and hand-fed to satiation twice daily for 8 weeks. At the end of 8-week feeding trial, 20 fish from each tank fish were artificially infected by intraperitoneal injection with 0.1 mL of culture suspension of pathogenic V. anguillarum containing 3.3 × 106 cfu/mL respectively. Fish were monitored for the following 8 days after V. anguillarum infection and dead fish were removed every 6 h for the first 4 days and 12 h for the rest of the study. Results: Weight gain, specific growth rate (SGR), and feed efficiency ratio (FER) of fish fed the YC diet was higher than those of fish fed all other diets. However, feed consumption, protein efficiency ratio, and protein retention was not affected by dietary additive. Moisture, crude protein, and crude lipid content of the whole body of fish were affected by dietary additive. Analysis of the Kaplan-Meier survival curves showed that survival of fish fed the YC, BB, and GG diets was higher than the Con diet. Conclusion: Oral administration of YC can improve not only weight gain, SGR, and FER of black rockfish, but lower mortality of rockfish at occurrence of V. angui

关键词： Black rockfish (Sebastes schlegeli) Blueberry Ginger Vibrio anguillarum Yacon

来源：评论

学校读者我要写书评

暂无评论

Spatial single mode laser source interaction with measured pulse based parabolic index multimode fiber

引用

Journal of Optical Communications 2024年第0期45卷 s465-s473页

作者： Rashed, Ahmed Nabih Zaki Ahammad, S.K. Hasane Daher, Malek G. Sorathiya, Vishal Siddique, Abrar Asaduzzaman, Sayed Rehana, Hasin Dutta, Nitul Patel, Shobhit K. Nyangaresi, Vincent Omollo Jibon, Rayhan Habib Abdelhamid, Huda Said Electronics and Electrical Communications Engineering Department Faculty of Electronic Engineering Menoufia University Menouf32951 Egypt Department of ECE Koneru Lakshmaiah Education Foundation Andhra Pradesh Vaddeswaram522302 India Physics Department Islamic University of Gaza P.O. Box 108 Gaza Palestine Department of Information and Communication Technology Marwadi University Rajkot India Department of Smart Robot Convergence and Application Engineering Pukyong National University Busan48513 Korea Republic of Department of Electrical and Computer Engineering University of Waterloo WaterlooONN2L 3G1 Canada Department of Computer Science and Engineering Rangamati Science and Technology University Rangamati Bangladesh Department of Computer Science and Engineering Daffodil International University Dhaka Bangladesh Computer Sc and Engg. Dept. SRM University Andhra Pradesh Guntur India Electronics and Communication Engg. Department Marwadi University Gujarat Rajkot India Tom Mboya University College P.O. Box 199-40300 Homabay Kenya Electronics and Communication Engineering Discipline Khulna University Khulna9208 Bangladesh

The study clarified spatial single mode laser interaction with measured pulse based parabolic index multimode fiber. Peak power level margin, maximum/minimum signal amplitude margin after parabolic index multimode fiber are measured with core radius of 25 μm, cladding thickness of 10 μm, refractive index peak of 1.4142, length of 300 m, and refractive index step of 1%. Maximum signal power margin against spectral frequency after PIN light detector based parabolic fiber properties is tested under the same operating parameters. The signal power amplitude/power within parabolic index multimode fiber is also measured based on variations of fiber lengths and relative refractive index step. The study implies the multimode graded index fibers with parabolic or near parabolic index profile cores have transmission bandwidths than other multimode fibers. © 2022 Walter de Gruyter GmbH, Berlin/Boston.

关键词： Multimode fibers

来源：评论

学校读者我要写书评

暂无评论

Journey across extrinsic tactics for power improvements of triboelectric energy harvesting beyond intrinsic materials and device structures: A concise review

Nano Trends

引用

Nano Trends 2025年 9卷

作者： Tamim, Ahmed Mahfuz Lee, Yebin Park, Jung Hwan Hwang, Geon-Tae Jeong, Chang Kyu Department of Energy Storage/Conversion Engineering of Graduate School & Hydrogen and Fuel Cell Research Center Jeonbuk National University Jeonbuk Jeonju 54896 South Korea Division of Advanced Materials Engineering Jeonbuk National University Jeonbuk Jeonju 54896 South Korea Department of JBNU-KIST Industry-Academia Convergence Research Jeonbuk National University Jeonbuk Jeonju 54896 South Korea Department of Mechanical Engineering (Department of Aeronautics Mechanical and Electronic Convergence Engineering) Kumoh National Institute of Technology Gyeongbuk Gumi 39177 South Korea Department of Materials Science and Engineering Pukyong National University Busan 48513 South Korea

The swift evolution of technologies like the Internet of Things (IoT), artificial intelligence (AI), and big data has created an unparalleled need for self-powered sensors and devices. While traditional power sources such as batteries remain in use, triboelectric nanogenerators (TENGs) have emerged as a promising alternative, capable of converting mechanical energy into electrical energy to power these sensors and devices. However, the practical application of TENGs largely depends on their power output and efficiency. The most promising approaches involve the optimization of material selection, surface modification, and chemical modification techniques to increase the triboelectric effect. Additionally, innovative device designs and charge mechanisms have evolved to improve charge generation and transfer mechanisms, thereby boosting TENG output. This review examines recent progress in methods to improve the power output and power density of TENGs. Rather than concentrating solely on approaches such as material selection, surface modification, or chemical modification, this review explores various strategies for enhancing output power and power density based on solid-solid interactions and alternating current (AC) TENGs. This comprehensive analysis provides valuable insights into current developments in TENG technology, paving the way for future innovations aimed at creating high-performance, self-powered systems for next-generation applications. © 2025 The Author(s)

关键词： Charging mechanism Intermediate layer Power management circuit Power output Switching mechanism

来源：评论

学校读者我要写书评

暂无评论

Hybridization of the thermo-chemical process of polyvinyl chloride in the production of bioethanol using horse hay

引用

Chemical engineering Journal 2023年 477卷

作者： Lee, Dong-Jun Cho, Seong-Heon Park, Jonghyun Yim, Jun Ho Jung, Sungyup Park, Junsu Tsang, Yiu Fai Chen, Wei-Hsin Jeon, Young Jae Kwon, Eilhann E. Department of Earth Resources and Environmental Engineering Hanyang University Seoul04763 Korea Republic of Wanju55365 Korea Republic of Department of Microbiology Pukyong National University Busan48513 Korea Republic of Department of Environmental Engineering Kyungpook National University Daegu41566 Korea Republic of Department of Science and Environmental Studies and State Key Laboratory in Marine Pollution The Education University of Hong Kong Tai po New Territories 999077 Hong Kong Department of Aeronautics and Astronautics National Cheng Kung University Tainan701 Taiwan Research Center for Smart Sustainable Circular Economy Tunghai University Taichung407 Taiwan Department of Mechanical Engineering National Chin-Yi University of Technology Taichung411 Taiwan School of Marine and Fisheries Life Science Pukyong National University Busan48513 Korea Republic of

The improper disposal of polyvinyl chloride (PVC) is hazardous to the environment. To rectify the inappropriate disposal of PVC, this study proposes a sustainable method to valorize hydrogen chloride (HCl) (from the thermolysis of PVC) in bioethanol (BE) production. Prior to saccharification, lignocellulosic biomass (horse hay) was treated with HCl. The optimized parameters for acid treatment were determined from a series of saccharification tests. In detail, the sugar recovery yield was 75 % after 2 % HCl, 120 °C, and 2 h treatment of horse hay. In addition, this study suggests that a nitrogen source is required during fermentation to enhance BE productivity. To valorize the residual materials from the saccharification of horse hay and dechlorination of PVC, they were pyrolyzed. Co-pyrolysis of the residues was performed in a CO2 gas environment. The gas-phase reaction of CO2 and volatiles stemming from the two residues was observed, which directly led to the enhanced generation of carbon monoxide (CO). These observations are attributed to the simultaneous redox mechanisms of CO2 and volatiles. To accelerate the reaction rate of the redox mechanisms, catalytic co-pyrolysis of the residues over Co/SiO2 was performed, and such attempts were confirmed by the enhanced formation of H2 and CO. This study highlights that the hybridization of the thermochemical process of PVC in the production of BE could be a viable approach for waste valorization. © 2023 Elsevier B.V.

关键词： Chlorine compounds

来源：评论

学校读者我要写书评

暂无评论

AI-enabled mm-Waveform Configuration for Autonomous Vehicles with Integrated Communication and Sensing

arXiv

引用

arXiv 2022年

作者： Chu, Nam H. Nguyen, Diep N. Hoang, Dinh Thai Pham, Quoc-Viet Phan, Khoa T. Hwang, Won-Joo Dutkiewicz, Eryk The School of Electrical and Data Engineering University of Technology Sydney Australia The Korean Southeast Center for the 4th Industrial Revolution Leader Education Pusan National University Busan46241 Korea Republic of School of Engineering and Mathematical Sciences Department of Computer Science and Information Technology La Trobe University Melbourne Australia The Department of Biomedical Convergence Engineering Pusan National University Yangsan50612 Korea Republic of

Integrated Communications and Sensing (ICS) has recently emerged as an enabling technology for ubiquitous sensing and IoT applications. For ICS application to Autonomous Vehicles (AVs), optimizing the waveform structure is one of the most challenging tasks due to strong influences between sensing and data communication functions. Specifically, the preamble of a data communication frame is typically leveraged for the sensing function. As such, the higher number of preambles in a Coherent Processing Interval (CPI) is, the greater sensing task's performance is. In contrast, communication efficiency is inversely proportional to the number of preambles. Moreover, surrounding radio environments are usually dynamic with high uncertainties due to their high mobility, making the ICS's waveform optimization problem even more challenging. To that end, this paper develops a novel ICS framework established on the Markov decision process and recent advanced techniques in deep reinforcement learning. By doing so, without requiring complete knowledge of the surrounding environment in advance, the ICS-AV can adaptively optimize its waveform structure (i.e., number of frames in the CPI) to maximize sensing and data communication performance under the surrounding environment's dynamic and uncertainty. Extensive simulations show that our proposed approach can improve the joint communication and sensing performance up to 46.26% compared with other baseline methods. Copyright © 2022, The Authors. All rights reserved.

关键词： Autonomous vehicles

来源：评论

学校读者我要写书评

暂无评论

Spectral studies of Eu3+-activated Na2Zn5Mo6O24: A novel red-emitting nanophosphor with high quantum efficiency and thermal stability

引用

Journal of Alloys and Compounds 2025年 1033卷

作者： Huang, Yanlin Xiang, Cong Xu, Rui Fang, Jingyi Yang, Hyun Kyoung College of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou215123 China Department of Chemical Engineering and Materials Science University of Minnesota Twin-Cities United States Marine-Bionics Convergence Technology Center Pukyong National University Busan48513 Korea Republic of Department of Electrical Electronics and Software Engineering Pukyong National University Busan48513 Korea Republic of

This study investigates the development of a novel red-emitting nanophosphor, Eu3+-doped Na2Zn5Mo6O24, synthesized via a sol-gel method for optoelectronic applications. Eu3+ ions, known for the red luminescence via 5D0 → 7F2 hypersensitive transition (∼615 nm), face intrinsic limitations due to weak oscillation absorption in the UV to blue spectral range. To solve this problem, the effective excitation of Eu3+ ions in the near-ultraviolet wavelength range was achieved by using the molybdate host Na2Zn5Mo6O24. Structural analysis confirmed a triclinic phase (space group P-1) with phase purity across doping concentrations (x = 0.01–0.06). The nanophosphor exhibited intense red emission (CIE: 0.65, 0.34) under 395 nm excitation, with a quantum efficiency (QE) of 68.5 % and superior thermal stability (activation energy ΔE = 0.279 eV). Optimal performance was observed at x = 0.05, balancing radiative efficiency and concentration quenching. Prototype LEDs integrating the nanophosphor demonstrated high color purity, and a warm-white LED achieved a color rendering index (CRI) of 90, validating its potential for solid-state lighting. © 2025 Elsevier B.V.

关键词： Photoluminescence

来源：评论

学校读者我要写书评

暂无评论

Tuning the Sensing Responses Towards Room-Temperature Hypersensitive Methanol Gas Sensor Using Exfoliated Graphene-Enhanced Zno Quantum Dot Nanostructures

SSRN

引用

SSRN 2022年

作者： Park, Ji Young Kwak, Yeonsu Lim, Hyo-Ryoung Park, Si-Woo Lim, Min Seob Cho, Hong-Baek Myung, Nosang Vincent Choa, Yong-Ho Department of Materials Science and Chemical Engineering Hanyang University Ansan15588 Korea Republic of Department of Chemical and Biomolecular Engineering University of Delaware Newark19716 United States College of Information Technology and Convergence Pukyong National University Busan48513 Korea Republic of Department of Chemical and Biomolecular Engineering University of Notre Dame Notre Dame46556 United States

A suitable methanol sensor workable in ambient temperature conditions with a high response has gained wide interest to prevent detrimental consequences from its low-level intoxication. In this work, we present a tunable and highly responsive ppb-level methanol gas sensor device working at room temperature, using an exfoliated graphene sheet (EGs) and ZnO quantum dots (QDs) on an aluminum anodic oxide (AAO) template. It is verified that EGs-supported AAO with a vertical electrode configuration enabled high and fast-responsive methanol sensing. Moreover, the hydroxyl and carboxyl groups of the high surface area EGs and ZnO QDs with a 3.37 eV bandgap absorbed UV light lead to a 56 times high response due to the enhanced polarization on the sensor surface compared to EGs/AAO without UV light at 800 ppb of methanol. The optimal resonance frequency of methanol is determined to be 100 kHz, which could detect methanol with high response of 2.65% at 100 ppm. The limit of detection (LOD) concentration is obtained at 360 ppb. This study demonstrates the potential of ZnO and exfoliated graphene-based capacitance sensor material for rapidly detecting hazardous gaseous light organic molecules. © 2022, The Authors. All rights reserved.

关键词： Graphene

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：