检索结果-内蒙古大学图书馆

arXiv 2021年

作者： Prabadevi, B. Pham, Quoc-Viet Liyanage, Madhusanka Deepa, N. Mounik, V.V.S.S. Reddy, Shivani Reddy Maddikunta, Praveen Kumar Khare, Neelu Reddy Gadekallu, Thippa Hwang, Won-Joo The School of Information Technology Vellore Institute of Technology Tamil Nadu632014 India The Research Institute of Computer Information and Communication Pusan National University Busan46241 Korea Republic of The School of Computer Science University Collage Dublin Ireland and Centre for Wireless Communications University of Oulu Finland The Computer Science and Engineering Indian Institute of Technology Madras India The School of Electronics and Communication Engineering Vellore Institute of Technology Tamil Nadu632014 India The Department of Biomedical Convergence Engineering Pusan National University Yangsan50612 Korea Republic of

Electricity is one of the mandatory commodities for mankind today. To address challenges and issues in the transmission of electricity through the traditional grid, the concepts of smart grids and demand response have been developed. In such systems, a large amount of data is generated daily from various sources such as power generation (e.g., wind turbines), transmission and distribution (microgrids and fault detectors), load management (smart meters and smart electric appliances). Thanks to recent advancements in big data and computing technologies, Deep Learning (DL) can be leveraged to learn the patterns from the generated data and predict the demand for electricity and peak hours. Motivated by the advantages of deep learning in smart grids, this paper sets to provide a comprehensive survey on the application of DL for intelligent smart grids and demand response. Firstly, we present the fundamental of DL, smart grids, demand response, and the motivation behind the use of DL. Secondly, we review the state-of-the-art applications of DL in smart grids and demand response, including electric load forecasting, state estimation, energy theft detection, energy sharing and trading. Furthermore, we illustrate the practicality of DL via various use cases and projects. Finally, we highlight the challenges presented in existing research works and highlight important issues and potential directions in the use of DL for smart grids and demand response. Copyright © 2021, 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

Virtuous utilization of carbon dioxide in pyrolysis of polylactic acid

引用

Chemical engineering Journal 2023年第1期466卷

作者： Cho, Seong-Heon Kim, Youkwan Lee, Sangyoon Andrew Lin, Kun-Yi Chen, Wei-Hsin Jung, Sungyup Lee, Doyeon Hyun Moon, Deok Jeon, Young Jae Kwon, Eilhann E. Department of Earth Resources and Environmental Engineering Hanyang University Seoul04763 Korea Republic of Department of Environmental Engineering & Innovation and Development Center of Sustainable Agriculture National Chung Hsing University 250 Kuo-Kuang Road Taichung Taiwan 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 Department of Environmental Engineering Kyungpook National University Daegu41566 Korea Republic of Department of Civil and Environmental Engineering Hanbat National University Daejeon34158 Korea Republic of Department of Environmental Engineering Chosun University Gwangju61452 Korea Republic of Department of Microbiology Pukyong National University Busan48513 Korea Republic of School of Marine and Fisheries Life Science Pukyong National University Busan48513 Korea Republic of

Polylactic acid has been adopted as a strategic alternative to petroplastics because of its biodegradability. The waste generation rate could be proportional to its use, considering the short lifespan of polylactic acid. However, a practical disposal or recycling protocol for polylactic acid waste has not yet been developed. Thus, this study suggests a promising thermochemical platform for valorizing polylactic acid waste into energy resources (syngas). Specifically, carbon dioxide-assisted pyrolysis has been suggested to impart environmental features to polylactic acid disposal. Before the pyrolysis tests, the polylactic acid waste sample was characterized by Fourier transform-infrared spectrometer and thermogravimetric analyses, which showed that polylactic acid contained a substantial amount of additives and impurities (∼13 wt%). The impurity containing polylactic acid was converted into pyrogenic gases and biocrudes through pyrolysis process. The pyrolysis was performed under carbon dioxide condition and led to enhanced carbon monoxide formation from simultaneous homogeneous reactions between CO2 and volatile organic compounds evolved from thermal degradation of polylactic acid. CO2 was reduced and the volatile compounds were oxidized. The evolution of carbon monoxide from pyrolysis under carbon dioxide condition was 2 times higher than that from nitrogen condition. The concentration of carbon monoxide from the pyrolysis of polylactic acid waste with respect to plastics and biomass was considerably higher. This observation indicates that the susceptibility of carbon dioxide to the homogeneous reaction is highly sensitive. To seek a way to hasten the homogeneous reaction, silica supported nickel catalysts were applied. The evolution of carbon monoxide from catalytic pyrolysis under carbon dioxide condition was 4.5 times higher than inert atmosphere. © 2023 Elsevier B.V.

关键词： Carbon dioxide

来源：评论

学校读者我要写书评

暂无评论

Underwater acoustic vector communication using particle velocities in shallow water 49

Underwater acoustic vector communication using particle velo...

引用

49th International Congress and Exposition on Noise Control engineering, INTER-NOISE 2020

作者： Choi, Kang-Hoon Choi, Jee Woong Kim, Sunhyo Dahl, Peter H. Department of Marine Science and Convergence Engineering Hanyang University 55 Hanyangdaehak-ro Sangnok-gu Ansan Gyeonggi-do Korea Republic of Maritime Security Research Center Korea Institute of Ocean Science and Technology 385 Haeyang-ro Yeongdo-gu Busan Korea Republic of Applied Physics Laboratory University of Washington Seattle 1013 NE 40th St. SeattleWA United States

ISBN: (纸本)9788994021362

Time reversal communication is a robust method to utilize spatial diversity gain and thus reduce delay spreads causing inter-symbol interference (ISI) by focusing the sound at a single position using the channel impulse response. However, it needs a large-size array consisting of spatially separated receivers. Acoustic vector sensor is more advantageous in spatial efficiency than pressure sensor because it can simultaneously measure three orthogonal vector quantities as well as acoustic pressure at a single point in space. In this paper, the time reversal communication results obtained by acoustic vector sensor are presented. Communication data collected during Korea Reverberation Experiment (KOREX-17) conducted in shallow water off the south coast of Korea on May 2017 using a single vector sensor. The communication results showed that the block-based time reversal technique with all the vector quantities and acoustic pressure gave better performances than the passive time reversal with those in time-varying channel, and the communication system including the only horizontal components performed better than the systems including all the horizontal and vertical components in this environment. © Proceedings of 2020 International Congress on Noise Control engineering, INTER-NOISE 2020. All rights reserved.

关键词： Impulse response

来源：评论

学校读者我要写书评

暂无评论

Square nanoplate–like tungsten oxide nanostructure–based sensor for electrochemical dopamine detection in human serum and saliva

引用

Microchemical Journal 2025年

作者： Aisha Akhtar Rafiq Ahmad Abdullah Shamshad Alam Akil Ahmad Mohammed B. Alshammari Byeong-Il Lee Industry 4.0 Convergence Bionics Engineering Pukyong National University Busan 48513 Republic of Korea New-Senior' Oriented Smart Health Care Education Center Pukyong National University Busan 48513 Republic of Korea Future Energy Convergence Core Center Jeonbuk National University Jeonju 54896 Republic of Korea Department of Pharmacology & Therapeutics Roswell Park Cancer Institute Buffalo NY 14263 USA Department of Chemistry College of Science and Humanities in Al-Kharj Prince Sattam Bin Abdulaziz University Al-Kharj 11942 Saudi Arabia Digital Healthcare Research Center Institute of Information Technology and Convergence Pukyong National University Busan 48513 Republic of Korea Division of Smart Healthcare College of Information Technology and Convergence Pukyong National University Busan 48513 Republic of Korea

Developing compact, high-performance sensors for detecting biofluid disease biomarkers can significantly enhance and revolutionize health monitoring systems. In this report, we present the synthesis of square nanoplate-like tungsten oxide (SNP-WO₃) nanostructures using an acid-assisted, low-temperature hydrothermal process and characterise them using various techniques. Using the SNP-WO₃ nanostructure, we have fabricated an electrochemical-based dopamine (DA) sensor. The conductive grade poly(2,3-dihydrothieno-1,4-dioxin)-poly(styrenesulfonate) (PEDOT:PSS) was employed alongside the SNP-WO₃ nanostructure to enhance stability and synergize DA detection. The SNP-WO₃ nanostructure and PEDOT:PSS slurry were deposited onto a screen-printed carbon electrode (SPCE), and the sensor fabrication steps were examined using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The optimised WO₃-PEDOT:PSS modified SPCE sensors implemented DA detection techniques, including CV, chronoamperometry, and DPV. The sensor exhibited a linear detection range of up to 4000 μM DA during CV and chronoamperometry measurements, whereas DPV demonstrated a linear range of up to 1000 μM. Notably, DPV outperformed CV and chronoamperometry in terms of sensitivity (2.1485 μA/μM/cm 2 ) and detection limit (0.019 μM), establishing it as the most effective technique for DA quantification. Furthermore, the sensor displayed exceptional selectivity for DA and excellent fabrication reproducibility, cyclic stability, and long-term stability of up to 8 weeks, ensuring reliable performance over time. The sensor's applicability was validated by detecting DA in human blood serum and artificial saliva samples, achieving high accuracy. These findings highlight the WO₃-PEDOT:PSS nanostructure as an emerging platform for electrochemical sensing with significant potential in neurochemical analysis and clinical diagnostics.

关键词：

来源：评论

学校读者我要写书评

暂无评论

High-frequency acoustic backscattering characteristics for acoustic detection of the red tide species Akashiwo sanguinea and Alexandrium affine

引用

Journal of Oceanology and Limnology 2019年第4期37卷 1268-1276页

作者： KIM Hansoo KANG Donhyug JUNG Seung Won KIM Mira Maritime Security and Safety Research Center Korea Institute of Ocean Science & Technology (KIOST) Busan 49111 Korea Department of Ocean System Engineering Jeju National University Jeju 63243 Korea Library of Marine Samples Korea Institute of Ocean Science & Technology (KIOST) Geoje 53201 Korea

Harmful algal blooms (HABs), caused by the overgrowth of certain phytoplankton species, have negative effects on marine environments and coastal fisheries. In addition to cell-counting methods using phytoplankton nets, a hydroacoustic technique based on acoustic backscattering has been proposed for the detection of phytoplankton blooms. However, little is known of the acoustic properties of HAB species. In this study, as essential data to support this technique, we measured the acoustic properties of two HAB species, Akashiwo sanguinea and Alexandrium affine, which occur in the South Sea off the coast of Korea. Due to the small size of the target, we used ultrasound for the measurements. Experiments were conducted under laboratory and field conditions. In the laboratory experiment, the acoustic signal received from each species was directly proportional to the cell abundance. We derived a relationship between the cell abundance and acoustic signal received for each species. The measured signals were compared to predictions of a fluid sphere scattering model. When A. sanguinea blooms appeared at an abundance greater than 3 500 cells/mL, the acoustic signals varied with cell abundance, showing a good correlation. These results confirm that acoustic measurements can be used to detect HAB species.

关键词： acoustic backscattering Akashiwo sanguinea Alexandrium affine fluid-sphere scattering model harmful algal blooms (HABs) red tide

来源：评论

学校读者我要写书评

暂无评论

Federated learning for big data: A survey on opportunities, applications, and future directions

arXiv

引用

arXiv 2021年

作者： Gadekallu, Thippa Reddy Pham, Quoc-Viet Huynh-The, Thien Bhattacharya, Sweta Maddikunta, Praveen Kumar Reddy Liyanage, Madhusanka School of Information Technology and Engineering Vellore Institute of Technology India Korean Southeast Center for the 4th Industrial Revolution Leader Education Pusan National University Busan46241 Korea Republic of ICT Convergence Research Center Kumoh National Institute of Technology Korea Republic of School of Computer Science University Collage Dublin Ireland and Centre for Wireless Communications University of Oulu Finland

Big data has remarkably evolved over the last few years to realize an enormous volume of data generated from newly emerging services and applications and a massive number of Internet-of-Things (IoT) devices. The potential of big data can be realized via analytic and learning techniques, in which the data from various sources is transferred to a central cloud for central storage, processing, and training. However, this conventional approach faces critical issues in terms of data privacy as the data may include sensitive data such as personal information, governments, banking accounts. To overcome this challenge, federated learning (FL) appeared to be a promising learning technique. However, a gap exists in the literature that a comprehensive survey on FL for big data services and applications is yet to be conducted. In this article, we present a survey on the use of FL for big data services and applications, aiming to provide general readers with an overview of FL, big data, and the motivations behind the use of FL for big data. In particular, we extensively review the use of FL for key big data services, including big data acquisition, big data storage, big data analytics, and big data privacy preservation. Subsequently, we review the potential of FL for big data applications, such as smart city, smart healthcare, smart transportation, smart grid, and social media. Further, we summarize a number of important projects on FL-big data and discuss key challenges of this interesting topic along with several promising solutions and directions. © 2021, CC BY-NC-ND.

关键词： Big data

来源：评论

学校读者我要写书评

暂无评论

Correction to: Al-12Si Alloy Fabricated Via Selective Laser Melting: Residual Stress and Microstructural Factors after Heat Treatment

引用

Journal of Materials engineering and Performance 2023年第5期33卷 2166-2166页

作者： Park, Seonghwan Kim, Sang Hoon Park, Jiyong Lee, Eunkyung Advanced Joining and Additive Manufacturing R&D Department Korea Institute of Industrial Technology Incheon Republic of Korea Department of Convergence Manufacturing System Engineering University of Science and Technology (UST) Daejeon Republic of Korea Additive Manufacturing Innovation Agency Korea Institute of Industrial Technology Siheung Republic of Korea Interdisciplinary Major of Maritime AI Convergence Department of Ocean Advanced Materials Convergence Engineering Korea Maritime and Ocean University Busan South Korea

来源：评论

学校读者我要写书评

暂无评论

Comparison of 2 Different Paclitaxel-Coated Balloons in Coronary In-Stent Restenosis: A Randomized Controlled Trial

引用

JACC: Asia 2022年第2期2卷 170-179页

作者： Jun, Eun Jung Shin, Eun-Seok Yuan, Song Lin Bhak, Youngjune Garg, Scot Kang, Woong Chol Kim, Je Sang Kim, June-Hong Bae, Jang-Whan Rha, Seung-Woon Chae, In-Ho Division of Cardiology Department of Internal Medicine Ulsan University Hospital University of Ulsan College of Medicine Ulsan South Korea Division of Cardiology Department of Internal Medicine Ulsan Medical Center Ulsan South Korea Department of Cardiology Dong-A University Hospital Busan South Korea Department of Biomedical Engineering College of Information-Bio Convergence Engineering Ulsan National Institute of Science and Technology Ulsan South Korea Department of Cardiology East Lancashire Hospitals NHS Trust Blackburn United Kingdom Cardiology Division Department of Internal Medicine Gil Medical Center Gachon University College of Medicine Incheon South Korea Department of Cardiology Dongguk University Ilsan Hospital Goyang South Korea Cardiovascular Center Pusan National University Yangsan Hospital Yangsan South Korea Division of Cardiology Department of Internal Medicine College of Medicine Chungbuk National University Cheongju South Korea Cardiovascular Center Korea University Guro Hospital Seoul South Korea Division of Cardiology Department of Internal Medicine Seoul National University Bundang Hospital Seongnam South Korea

Background: Drug-coated balloons (DCBs) offer an effective treatment for in-stent restenosis (ISR). The Genoss DCB is a novel paclitaxel-coated balloon with a shellac plus vitamin E excipient that enhances drug delivery to the target lesion, minimizing restenosis. Objectives: This study aimed to investigate the angiographic efficacy, clinical safety, and effectiveness of the novel shellac plus vitamin E–based DCB in a randomized controlled trial designed to enable regulatory approval of this new device in South Korea. Methods: This noninferiority trial randomized patients experiencing their first ISR to the novel shellac plus vitamin E–based DCB or the reference SeQuent Please iopromide-based DCB in a 1:1 ratio. All patients underwent planned angiographic and clinical follow-up at 6 months. The study was powered for the primary endpoint of 6 months in-segment late lumen loss (LLL). Results: A total of 82 patients from 7 centers were randomized to either the novel shellac plus vitamin E–based DCB group (n = 41) or the reference iopromide-based DCB group (n = 41). The 6-month in-segment LLL was 0.15 ± 0.43 mm with the novel DCB compared with 0.24 ± 0.39 mm with the reference device. The 1-sided 97.5% upper confidence limit of the difference was 0.13 mm, lower than the noninferiority limit of 0.29 mm, achieving noninferiority (P for noninferiority = 0.001). Major cardiovascular events were comparable between 2 groups at 6 months (7.7% for the novel DCB vs 10.3% for the reference DCB;P = 0.692). Conclusions: In this multicenter, head-to-head comparison randomized trial, the novel shellac plus vitamin E–based DCB showed a comparable result to the reference iopromide-based device for the primary endpoint of 6-month in-segment LLL for the treatment of coronary ISR. (Compare the Safety and Efficacy of Genoss® DCB and SeQuent® Please in Korean Patient With Coronary In-stent Restenosis;NCT04405063) © 2022 The Authors

关键词： cardiovascular events drug-coated balloon in-segment late lumen loss major adverse

来源：评论

学校读者我要写书评

暂无评论

Corrigendum to `High-energy density ultra-thick drying-free Ni-rich cathode electrodes for application in lithium-ion batteries’ [Energy Storage Materials 71 (2024) Start page(1)–End page(13)/103542]

引用

Energy Storage Materials 2024年 71卷

作者： Tom James Embleton Jae Hong Choi Sung-Jae Won Jahanzaib Ali Kashif Saleem Saqib Kyungmok Ko Mina Jo Junhyeok Hwang Joohyuk Park Jin Hong Lee Jinsoo Kim Min Kyung Kim Ji-Won Jung Minjoon Park Pilgun Oh Department of Smart Green Technology Engineering and Department of Nanotechnology Engineering Pukyong National University Busan 48547 Republic of Korea Department of Advanced Materials Engineering Keimyung University 1095 Dalgubeol-daero Dalseo-gu Daegu 42601 Republic of Korea School of Chemical Engineering Pusan National University Busan 46421 Republic of Korea Ulsan Advanced Energy Technology R&D Center Korea Institute of Energy Research (KIER) Ulsan 44776 Republic of Korea School of Materials Science and Engineering University of Ulsan (UOU) Ulsan 44776 Republic of Korea Division of Chemical Engineering Konkuk University Seoul 05029 Republic of Korea Department of Nanoenergy Engineering Department of Nano Fusion Technology Research Center of Energy Convergence Technology Pusan National University 50 Busan daehak-ro 63 beon-gil 2 Geumjeong-gu Busan 46241 Republic of Korea

来源：评论

学校读者我要写书评

暂无评论

Effect of thermal and alkaline pretreatments on polyhydroxybutyrate solubilization and subsequent anaerobic digestion: Solubilization efficiency, methane production and microbial community

引用

Energy Conversion and Management: X 2024年

作者： Minjae Kim Trang Thi Nhu Le Minsu Song Sungyun Jung Mi Na Rhie Thien Truc Thanh Ngo Seonmin Kang Chaeyoung Rhee Seung Gu Shin Joonyeob Lee Division of Earth Environmental System Science (Major of Environmental Engineering) Pukyong National University Busan 48513 Republic of Korea Institute of Sustainable Earth and Environmental Dynamics (SEED) Pukyong National University Busan 48547 Republic of Korea National Fishery Products Quality Management Service Busan 49111 Republic of Korea Department of Energy Engineering Future Convergence Technology Research Institute Gyeongsang National University Jinju Gyeongnam 52828 Republic of Korea

The effects of temperature T (37–91 °C), pH (7–13) and reaction time t (24–120 h) of thermal-alkaline pretreatment on polyhydroxybutyrate (PHB) solubilization and anaerobic methane production were investigated using a 3 2  × 4 mixed-level full factorial experiment. Nearly complete solubilization (99.6 %) of PHB was achieved under thermal-alkaline pretreatment conditions of 91 °C, pH 13, and 120 h. The anaerobic digestion (AD) of pretreated PHB resulted in a substantial improvement in methane production, with a 15.6-times increase in methane production rate (56.3 mL-CH 4 /g-VSS/d), a 86 % reduction in the time required for complete AD of PHB, yielding 362.8 mL-CH 4 /g-COD PHB , compared to AD of unpretreated PHB. All three pretreatment factors significantly affected PHB solubilization and anaerobic methane production, and a synergistic effect was observed between pH and temperature. The quantitative relationships between T , pH, and t of the thermal-alkaline pretreatment on solubilization efficiency and methane production were successfully expressed using partial cubic models. Positive correlations were found between these responses. Distinct microbial communities were enriched during AD of unpretreated and pretreated PHBs. Spirochaetaceae, Christensenellaceae R-7 group , Mesotoga , Syntrophomonas , Sedimentibacter , candidatus Methanofastidiosum , and Methanosaeta were identified as active microbial communities involved in the AD of PHB. These results demonstrate that optimized thermal-alkaline pretreatment can effectively improve the AD of PHB, highlighting the potential of PHB waste as a promising feedstock for AD

关键词： Biogas production Anaerobic digestion Polyhydroxybutyrate Thermal-alkaline pretreatment Microbial communities

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：