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| WoS | SCOPUS | Document Type | Document Title | Abstract | Authors | Affiliation | ResearcherID (WoS) | AuthorsID (SCOPUS) | Author Email(s) | Journal Name | JCR Abbreviation | ISSN | eISSN | Volume | Issue | WoS Edition | WoS Category | JCR Year | IF | JCR (%) | FWCI | FWCI Update Date | WoS Citation | SCOPUS Citation | Keywords (WoS) | KeywordsPlus (WoS) | Keywords (SCOPUS) | KeywordsPlus (SCOPUS) | Language | Publication Stage | Publication Year | Publication Date | DOI | JCR Link | DOI Link | WOS Link | SCOPUS Link |
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| ○ | ○ | Article | Syenite from Ulleung Island: As a window for pre-eruptive shallow alkaline magma dynamics | Ulleung Island is an alkaline volcano that consists of Pleistocene basalts (Stage I), effusive trachytes (Stages and Holocene explosive phonolitic volcanics (Stage IV). Syenites are found as volcanic ejecta in Stage Ill and IV, hence, acting as a window for pre-eruptive shallow alkaline magma dynamics. We integrate geochemical data from Ulleung Island to track the magma batch interconnection underneath this island and discuss the petrological effect of magma mixing on the resultant eruption style through shallow preconditioning. The magma mixing characteristics of syenite with melanocratic enclaves are reported in this study from a textural and geochemical context. The textural assemblage from syenite is likely to indicate a couple of magmatic conditions including quenching of hotter magma, overgrowth of orthoclase-rich feldspar, and disequilibrium of kaersutite. The magma mixing conditions were traced through the predicting models from clinopyroxene, amphibole, biotite and alkali-feldspar chemistry, and constrained by similar to 690-740 degrees C at similar to 77-180 MPa. In addition, the Zr/Ce versus Zr/Y plot indicates that the syenites can be subdivided into the Group I as felsic cumulate from Stage IV, and the Group II as mixing product of Stage IV and II. Consequently, the magma mixing of the Stage IV and II produced the Stage III. The syenite ejecta from Ulleung Island indicate the petrological significance of the shallow alkaline magma dynamics: the explosive eruption of Stage IV is induced by the volatile (especially, magmatic water) transportation from Stage II and subsequent saturation in Stage IV. Furthermore, a discussion on the manifested eruption style through magma mixing from comparative perspective implies that the explosive eruption of a volcano requires the transportation and saturation of volatile components and a short stagnant period, avoiding stabilization of magma chamber prior to its eruption. (C) 2019 Elsevier B.V. All rights reserved. | Park, Jongkyu; Lim, Hoseong; Myeong, Bora; Jang, Yun-Deuk | Kyungpook Natl Univ, Dept Geol, Daegu 41566, South Korea; Res Inst Dok Do & Ulleung Isl, Daegu 41566, South Korea; Monash Univ, Sch Earth Atmosphere & Environm, Clayton, Vic 3800, Australia; Korea Inst Ocean Sci & Technol, Deep Sea & Seabed Resources Res Ctr, Busan 49111, South Korea | 57201402980; 57201403958; 57201401851; 7201869003 | jangyd@knu.ac.kr; | LITHOS | LITHOS | 0024-4937 | 1872-6143 | 356 | SCIE | GEOCHEMISTRY & GEOPHYSICS;MINERALOGY | 2020 | 4.004 | 21.0 | 0.5 | 2025-06-25 | 7 | 7 | Alkaline magma dynamics; Magma mixing; Syenite; Eruption style; Ulleung Island | TRACE-ELEMENTS; VOLCANIC-ROCKS; ULREUNG ISLAND; PLUTONIC ROCKS; SYSTEMS; AR; SOLIDIFICATION; FRACTIONATION; SOLUBILITY; SATURATION | Alkaline magma dynamics; Eruption style; Magma mixing; Syenite; Ulleung Island | North Kyongsang; South Korea; Ulleung Island; Trachytes; alkaline rock; basalt; magma; magma chamber; magmatism; petrology; Pleistocene; syenite; trachyte; volcanic eruption | English | 2020 | 2020-03 | 10.1016/j.lithos.2019.105342 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | 3D Contact Position Estimation of Image-Based Areal Soft Tactile Sensor with Printed Array Markers and Image Sensors | Tactile sensors have been widely used and researched in various fields of medical and industrial applications. Gradually, they will be used as new input devices and contact sensors for interactive robots. If a tactile sensor is to be applied to various forms of human-machine interactions, it needs to be soft to ensure comfort and safety, and it should be easily customizable and inexpensive. The purpose of this study is to estimate 3D contact position of a novel image-based areal soft tactile sensor (IASTS) using printed array markers and multiple cameras. First, we introduce the hardware structure of the prototype IASTS, which consists of a soft material with printed array markers and multiple cameras with LEDs. Second, an estimation algorithm for the contact position is proposed based on the image processing of the array markers and their Gaussian fittings. A series of basic experiments was conducted and their results were analyzed to verify the effectiveness of the proposed IASTS hardware and its estimation software. To ensure the stability of the estimated contact positions a Kalman filter was developed. Finally, it was shown that the contact positions on the IASTS were estimated with a reasonable error value for soft haptic applications. | Lee, Jong-il; Lee, Suwoong; Oh, Hyun-Min; Cho, Bo Ram; Seo, Kap-Ho; Kim, Min Young | Korea Inst Robot & Technol Convergence, HRI Human Robot Interact Res Ctr, Pohang Si 37553, Gyeongsangbuk D, South Korea; Kyungpook Natl Univ, Sch Future Automot & IT Convergence, Daegu 41566, South Korea; Korea Inst Ind Technol, Safety Syst R&D Grp, Daegu 42994, South Korea; Kyungpook Natl Univ, Sch Elect Engn, Daegu 41566, South Korea; Pohang Univ Sci & Technol, Dept Mech Engn, Pohang Si 37673, Gyeongsangbuk D, South Korea; Kyungpook Natl Univ, Res Ctr Neurosurg Robot Syst, Daegu 41566, South Korea | 57210206280; 57188756166; 56028920100; 57201652666; 7201838999; 56739349100 | banily07@kiro.re.kr;lee@kitech.re.kr;ohm29@knu.ac.kr;jobbo@kitech.re.kr;neoworld@kiro.re.kr;minykim@knu.ac.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 20 | 13 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2020 | 3.576 | 21.1 | 0.31 | 2025-06-25 | 5 | 4 | tactile sensor; image processing; soft material; printed array markers; camera; contact position | Camera; Contact position; Image processing; Printed array markers; Soft material; Tactile sensor | Humans; Image Processing, Computer-Assisted; Software; Touch; Cameras; Image processing; Contact position; Estimation algorithm; Gaussian fitting; Haptic applications; Hardware structures; Interactive robot; Multiple cameras; Reasonable errors; human; image processing; software; touch; End effectors | English | 2020 | 2020-07 | 10.3390/s20133796 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | A Multi-Objective Approach for Optimal Energy Management in Smart Home Using the Reinforcement Learning | Maintaining a fair use of energy consumption in smart homes with many household appliances requires sophisticated algorithms working together in real time. Similarly, choosing a proper schedule for appliances operation can be used to reduce inappropriate energy consumption. However, scheduling appliances always depend on the behavior of a smart home user. Thus, modeling human interaction with appliances is needed to design an efficient scheduling algorithm with real-time support. In this regard, we propose a scheduling algorithm based on human appliances interaction in smart homes using reinforcement learning (RL). The proposed scheduling algorithm divides the entire day into various states. In each state, the agents attached to household appliances perform various actions to obtain the highest reward. To adjust the discomfort which arises due to performing inappropriate action, the household appliances are categorized into three groups i.e., (1) adoptable, (2) un-adoptable, (3) manageable. Finally, the proposed system is tested for the energy consumption and discomfort level of the home user against our previous scheduling algorithm based on least slack time phenomenon. The proposed scheme outperforms the Least Slack Time (LST) based scheduling in context of energy consumption and discomfort level of the home user. | Diyan, Muhammad; Silva, Bhagya Nathali; Han, Kijun | Kyungpook Natl Univ, Sch Comp Sci & Engn, Daegu 41566, South Korea | ; Diyan, Muhammad/AAM-5848-2021; Silva, Bhagya/AAW-1014-2021 | 26028317800; 57192304387; 7402963670 | m.diyan@knu.ac.kr;nathalis@netopia.knu.ac.kr;kjhan@knu.ac.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 20 | 12 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2020 | 3.576 | 21.1 | 1.31 | 2025-06-25 | 21 | 29 | reinforcement learning; home energy management; appliance scheduling; human-appliance interaction; user comfort | DEMAND-RESPONSE; COMMERCIAL BUILDINGS; CONSUMPTION; ALGORITHM; SYSTEM | Appliance scheduling; Home energy management; Human-appliance interaction; Reinforcement learning; User comfort | Algorithms; Housing; Humans; Machine Learning; Smart Materials; Automation; Domestic appliances; Intelligent buildings; Reinforcement learning; Scheduling; Scheduling algorithms; Discomfort level; Efficient scheduling; Home users; Human interactions; In contexts; Least slack time; Multi objective; Smart homes; algorithm; housing; human; machine learning; Energy utilization | English | 2020 | 2020-06 | 10.3390/s20123450 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | A novel off-on fluorescent probe for specific detection and imaging of cysteine in live cells and in vivo | Cysteine (Cys) plays a pivotal role in many physiological and pathological processes, including detoxification and protein synthesis. The abnormal levels of Cys are linked to many diseases. In this study, a novel red-emitting off-on fluorescent probe Cys-TCF was masterly constructed for discriminative detection of Cys. After a series of experimental assessment, Cys-TCF displayed higher selectivity and sensitivity for Cys over other biothilols with a low detection limit (0.04 mu mol/L). More notably, the probe was also successfully applied to image Cys in live cells and live zebrafishes with low cytotoxicity. (C) 2019 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved. | Zhang, Baoxin; Zhang, Haijuan; Zhong, Miao; Wang, Song; Xu, Qianhe; Cho, Dong-Hyung; Qiu, Hongdeng | Lanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China; Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China; Chinese Acad Sci, Lanzhou Inst Chem Phys, CAS Key Lab Chem Northwestern Plant Resources, Key Lab Nat Med Gansu Prov, Lanzhou 730000, Peoples R China; Kyungpook Natl Univ, Sch Life Sci, Daegu 41566, South Korea | Choi, Hye Rin/JDV-9065-2023; Wang, Song/IZE-0223-2023; Zhang, Baoxin/HGU-2483-2022 | 56026398800; 55102682600; 57209236001; 59880757200; 57207253404; 35093684400; 11141910200 | zhanghj@licp.cas.cn;hdqiu@licp.cas.cn; | CHINESE CHEMICAL LETTERS | CHINESE CHEM LETT | 1001-8417 | 1878-5964 | 31 | 1 | SCIE | CHEMISTRY, MULTIDISCIPLINARY | 2020 | 6.779 | 21.1 | 1.83 | 2025-06-25 | 48 | 44 | Cysteine; Fluorescent probe; Red emission; Low detection limit; Fluorescent imaging | HIGHLY SELECTIVE DETECTION; RECENT PROGRESS; CHEMODOSIMETER; HOMOCYSTEINE; GLUTATHIONE; THIOLS; SENSOR | Cysteine; Fluorescent imaging; Fluorescent probe; Low detection limit; Red emission | English | 2020 | 2020-01 | 10.1016/j.cclet.2019.05.061 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Accuracy-Power Controllable LiDAR Sensor System with 3D Object Recognition for Autonomous Vehicle | Light detection and ranging (LiDAR) sensors help autonomous vehicles detect the surrounding environment and the exact distance to an object's position. Conventional LiDAR sensors require a certain amount of power consumption because they detect objects by transmitting lasers at a regular interval according to a horizontal angular resolution (HAR). However, because the LiDAR sensors, which continuously consume power inefficiently, have a fatal effect on autonomous and electric vehicles using battery power, power consumption efficiency needs to be improved. In this paper, we propose algorithms to improve the inefficient power consumption of conventional LiDAR sensors, and efficiently reduce power consumption in two ways: (a) controlling the HAR to vary the laser transmission period (TP) of a laser diode (LD) depending on the vehicle's speed and (b) reducing the static power consumption using a sleep mode, depending on the surrounding environment. The proposed LiDAR sensor with the HAR control algorithm reduces the power consumption of the LD by 6.92% to 32.43% depending on the vehicle's speed, compared to the maximum number of laser transmissions (Nx.max). The sleep mode with a surrounding environment-sensing algorithm reduces the power consumption by 61.09%. The algorithm of the proposed LiDAR sensor was tested on a commercial processor chip, and the integrated processor was designed as an IC using the Global Foundries 55 nm CMOS process. | Lee, Sanghoon; Lee, Dongkyu; Choi, Pyung; Park, Daejin | Carnavicom Co Ltd, Incheon 21984, South Korea; Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu 41566, South Korea | 57254873100; 55698915100; 7102909167; 55463943600 | shlee@carnavi.com;dklee1215@knu.ac.kr;p0choi@ee.knu.ac.kr;boltanut@knu.ac.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 20 | 19 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2020 | 3.576 | 21.1 | 1.89 | 2025-06-25 | 34 | 39 | LiDAR sensor processor; low-power circuit design; 3D object recognition; autonomous vehicle | 3D object recognition; Autonomous vehicle; LiDAR sensor processor; Low-power circuit design | Autonomous vehicles; Electric power utilization; Energy efficiency; Object detection; Object recognition; Power control; Vehicle transmissions; 3d object recognition; Angular resolution; Integrated processors; Laser transmission; Light detection and ranging; Processor chips; Static power consumption; Surrounding environment; Optical radar | English | 2020 | 2020-10 | 10.3390/s20195706 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Active Volume Control in Smart Phones Based on User Activity and Ambient Noise | To communicate efficiently with a prospective user, auditory interfaces are employed in mobile communication devices. Diverse sounds in different volumes are used to alert the user in various devices such as mobile phones, modern laptops and domestic appliances. These alert noises behave erroneously in dynamic noise environments, leading to major annoyances to the user. In noisy environments, as sounds can be played quietly, this leads to the improper masked rendering of the necessary information. To overcome these issues, a multi-model sensing technique is developed as a smartphone application to achieve automatic volume control in a smart phone. Based on the ambient environment, the volume is automatically controlled such that it is maintained at an appropriate level for the user. By identifying the average noise level of the ambient environment from dynamic microphone and together with the activity recognition data obtained from the inertial sensors, the automatic volume control is achieved. Experiments are conducted with five different mobile devices at various noise-level environments and different user activity states. Results demonstrate the effectiveness of the proposed application for active volume control in dynamic environments. | Kumar, V. D. Ambeth; Malathi, S.; Kumar, Abhishek; Prakash, M.; Veluvolu, Kalyana C. | Anna Univ, Panimalar Engn Coll, Comp Sci & Engn, Chennai 600123, Tamil Nadu, India; Banaras Hindu Univ, Dept Comp Sci, Varanasi 221005, Uttar Pradesh, India; Anna Univ, Karpagam Coll Engn, Coimbatore 641032, Tamil Nadu, India; Kyungpook Natl Univ, Sch Elect Engn, Daegu 41566, South Korea | Veluvolu, Kalyana/C-6366-2011; KUMAR/AAG-3938-2019; Kumar, Abhishek/G-7260-2018; Mohan, Prakash/D-9499-2018; Subramanian, Malathi/G-3291-2017; Veluvolu, Kalyana Chakravarthy/C-6366-2011; KUMAR, DR.V.D.AMBETH/G-2788-2017; M, Prakash/D-9499-2018 | 57219240462; 57195331995; 37085909200; 57472037100; 8703318200 | vdambethkumar@panimalar.ac.in;smalathi@panimalar.ac.in;abhishekryan@bhu.ac.in;prakashmohan@kce.ac.in;veluvolu@ee.knu.ac.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 20 | 15 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2020 | 3.576 | 21.1 | 2.65 | 2025-06-25 | 17 | 39 | volume; decibel value; signal; multisensing; social network; sensor introduction | ACCELEROMETER; SENSOR | Decibel value; Multisensing; Sensor introduction; Signal; Social network; Volume | Communication; Noise; Prospective Studies; Smartphone; Domestic appliances; Mobile telecommunication systems; Smartphones; Activity recognition; Ambient environment; Auditory interfaces; Dynamic environments; Mobile communication devices; Noisy environment; Sensing techniques; Smart-phone applications; interpersonal communication; noise; prospective study; smartphone; User interfaces | English | 2020 | 2020-08 | 10.3390/s20154117 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Adaptive Real-Time Routing Protocol for (m,k)-Firm in Industrial Wireless Multimedia Sensor Networks | Many applications are able to obtain enriched information by employing a wireless multimedia sensor network (WMSN) in industrial environments, which consists of nodes that are capable of processing multimedia data. However, as many aspects of WMSNs still need to be refined, this remains a potential research area. An efficient application needs the ability to capture and store the latest information about an object or event, which requires real-time multimedia data to be delivered to the sink timely. Motivated to achieve this goal, we developed a new adaptive QoS routing protocol based on the (m,k)-firm model. The proposed model processes captured information by employing a multimedia stream in the (m,k)-firm format. In addition, the model includes a new adaptive real-time protocol and traffic handling scheme to transmit event information by selecting the next hop according to the flow status as well as the requirement of the (m,k)-firm model. Different from the previous approach, two level adjustment in routing protocol and traffic management are able to increase the number of successful packets within the deadline as well as path setup schemes along the previous route is able to reduce the packet loss until a new path is established. Our simulation results demonstrate that the proposed schemes are able to improve the stream dynamic success ratio and network lifetime compared to previous work by meeting the requirement of the (m,k)-firm model regardless of the amount of traffic. | Kim, Beom-Su; Kim, Sangdae; Kim, Kyong Hoon; Sung, Tae-Eung; Shah, Babar; Kim, Ki-Il | Chungnam Natl Univ, Dept Comp Sci & Engn, Daejeon 34134, South Korea; Kyungpook Natl Univ, Sch Comp Sci & Engn, Daegu 41566, South Korea; Yonsei Univ, Dept Comp & Telecommun Engn, Wonju 26493, South Korea; Zayed Univ, Coll Technol Innovat, POB 144534, Abu Dhabi, U Arab Emirates | Kim, Beomsu/MBG-6090-2025; Shah, Babar/AFL-0756-2022; Kim, Honghyok/LDF-5356-2024 | 57201846676; 57189460733; 15065463500; 59837575500; 55354253000; 57193788419 | bumsou10@cnu.ac.kr;sdkim.cse@gmail.com;kyong.kim@knu.ac.kr;tesung@yonsei.ac.kr;Babar.Shah@zu.ac.ae;kikim@cnu.ac.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 20 | 6 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2020 | 3.576 | 21.1 | 0.38 | 2025-06-25 | 3 | 6 | (m,k)-firm model; adaptive real-time routing; traffic management; industrial wireless multimedia sensor network | STREAMS; (M; EFFICIENT; SCHEME | (m,k)-firm model; Adaptive real-time routing; Industrial wireless multimedia sensor network; Traffic management | Data handling; Packet networks; Routing protocols; Sensor networks; Sensor nodes; Industrial environments; Industrial wireless; Potential researches; Real-time routing; Real-time routing protocol; Traffic handling schemes; Traffic management; Wireless multimedia sensor networks (WMSN); Network routing | English | 2020 | 2020-03 | 10.3390/s20061633 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | An Efficient, Anonymous and Robust Authentication Scheme for Smart Home Environments | In recent years, the Internet of Things (IoT) has exploded in popularity. The smart home, as an important facet of IoT, has gained its focus for smart intelligent systems. As users communicate with smart devices over an insecure communication medium, the sensitive information exchanged among them becomes vulnerable to an adversary. Thus, there is a great thrust in developing an anonymous authentication scheme to provide secure communication for smart home environments. Most recently, an anonymous authentication scheme for smart home environments with provable security has been proposed in the literature. In this paper, we analyze the recent scheme to highlight its several vulnerabilities. We then address the security drawbacks and present a more secure and robust authentication scheme that overcomes the drawbacks found in the analyzed scheme, while incorporating its advantages too. Finally, through a detailed comparative study, we demonstrate that the proposed scheme provides significantly better security and more functionality features with comparable communication and computational overheads with similar schemes. | Banerjee, Soumya; Odelu, Vanga; Das, Ashok Kumar; Chattopadhyay, Samiran; Park, Youngho | Jadavpur Univ, Dept Informat Technol, Kolkata 700098, India; Birla Inst Technol & Sci, Dept Comp Sci & Informat Syst, Pilani Hyderabad Campus, Hyderabad 500078, India; Int Inst Informat Technol, Ctr Secur Theory & Algorithm Res, Hyderabad 500032, India; Northumbria Univ, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England; Kyungpook Natl Univ, Sch Elect Engn, 80 Daehak Ro, Daegu 41566, South Korea | Chattopadhyay, Samiran/AAW-3145-2021; Banerjee, Soumya/AAD-3011-2019; Das, Ashok Kumar/U-2790-2019; Vanga, Odelu/AAD-3174-2021; vanga, odelu/B-5428-2017 | 55477346700; 55418632300; 55450732800; 55424776200; 56962990300 | soumyaBanerjee@outlook.in;odelu.vanga@hyderabad.bits-pilani.ac.in;ashok.das@iiit.ac.in;samirancju@gmail.com;parkyh@knu.ac.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 20 | 4 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2020 | 3.576 | 21.1 | 3.55 | 2025-06-25 | 49 | 61 | Internet of Things (IoT); smart homes; anonymous authentication; session key agreement; security; Automated Validation of Internet Security Protocols and Applications (AVISPA) | KEY EXCHANGE; SECURE; INTERNET; THINGS; PROTOCOL; BIOMETRICS; CARD | Anonymous authentication; Automated Validation of Internet Security Protocols and Applications (AVISPA); Internet of Things (IoT); Security; Session key agreement; Smart homes | Authentication; Automation; Cryptography; Intelligent buildings; Intelligent systems; Network security; Anonymous authentication; Internet of Things (IOT); Internet security; Security; Session key; Smart homes; article; comparative study; home environment; internet of things; Internet of things | English | 2020 | 2020-02 | 10.3390/s20041215 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Analysis of Electric Motor Magnetic Core Loss under Axial Mechanical Stress | The electrical machine core is subjected to mechanical stresses during manufacturing processes. These stresses include radial, circumferential and axial components that may have significant influence on the magnetic properties and it further leads to increase in iron loss and permeability in the stator core. In this research work, analysis of magnetic core iron loss under axial mechanical stress is investigated. The magnetic core is designed with Magnetic Flux Density (MF) ranging from 1.0 T to 1.5 T with estimated dimensions under various input voltages from 5 V to 85 V. Iron losses are predicted by the axial pressure created manually wherever required and is further applied to the designed magnetic core in the range of 5 MPa to 50 MPa. Finite element analysis is employed to estimate the magnetic core parameters and the magnetic core dimensions. A ring core is designed with the selected dimensions for the experimental evaluation. The analysis of iron loss at 50 Hz frequency for non-oriented electrical steel of M400-50A is tested experimentally using the Epstein frame test and force-fit setup test. Experimental evaluation concludes that the magnetic core saturates when it reaches its knee point of the B-H curve of the chosen material and also reveals that the axial pressure has a high impact on the magnetic properties of the material. | Kumar, L. Ashok; Raj, Bagianathan Madhan; Vijayakumar, Varadarajan; Indragandhi, Vairavasundaram; Subramaniyaswamy, Vairavasundaram; Karimi, Hamid R.; Veluvolu, Kalyana C. | PSG Coll Technol, Coimbatore 641004, Tamil Nadu, India; ELGI Equipment Ltd, Specialist Motors, Coimbatore 641005, Tamil Nadu, India; Univ New South Wales, Dept Sch Comp Sci & Engn, Sydney, NSW 2052, Australia; Vellore Inst Technol, Vellore 632014, Tamil Nadu, India; SASTRA Deemed Univ, Sch Comp, Thanjavur 613401, India; Politecn Milan, Dept Mech Engn, I-20156 Milan, Italy; Kyungpook Natl Univ, Sch Elect Engn, Daegu 41566, South Korea | varadarajan, vijayakumar/K-8007-2017; Karimi, Hamid Reza/Y-2403-2019; v, indragandhi/F-3023-2019; Veluvolu, Kalyana Chakravarthy/C-6366-2011; Veluvolu, Kalyana/C-6366-2011 | 35955655300; 57220103726; 57200993506; 55759761300; 54888993500; 59268604900; 8703318200 | lak@eee.psgtech.ac.in;madhanrajb@magna.com;v.varadarajan@unsw.edu.au;indragandhi.v@vit.ac.in;swamy@cse.sastra.edu;hamidreza.karimi@polimi.it;veluvolu@ee.knu.ac.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 20 | 23 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2020 | 3.576 | 21.1 | 0.15 | 2025-06-25 | 3 | 3 | ansys maxwell software; axial pressure; iron loss; magnetic core; mechanical stress | MODEL | Ansys maxwell software; Axial pressure; Iron loss; Magnetic core; Mechanical stress | Electric losses; Electric motors; Iron; Iron analysis; Iron research; Magnetic cores; Magnetic properties; Silicon steel; Axial components; Electrical machine; Epstein frame tests; Experimental evaluation; Magnetic core loss; Manufacturing process; Mechanical stress; Non-oriented electrical steel; Magnetism | English | 2020 | 2020-12 | 10.3390/s20236818 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Application of Adaptive Wave Cancellation Underwater to a Piezoelectric-Material-Based Multilayer Sensor | This paper concerns the use of adaptive wave cancellation in a new multilayer smart skin sensor to attenuate the primary low-frequency noise underwater. The proposed multilayered system is designed with a piezoelectric actuator (Pb(In1/2Nb1/2)O-3-Pb(Mg1/3Nb2/3)O-3-PbTiO3 composite) and two layers of polyvinylidene fluoride to accelerate wave absorption. Furthermore, the use of a combination of an adaptive control scheme and a time-delay signal separation method has the potential to provide the proposed absorber system with a wave cancellation capability and thereby enable the absorber system to respond to environmental changes underwater. The use of smart piezoelectric materials and an adaptive control approach enables the absorber system to achieve the high attenuation level of the reflected waves, unlike typical absorber systems based on active noise control. Echo reduction experiments showed that the proposed piezoelectric-based multilayer sensor with an adaptive controller could attenuate reflected wave signals effectively. | Lee, Hyodong; Park, Hwijin; Park, Kwan Kyu; Yi, Hak | Kyungpook Natl Univ, Dept Mech Engn, Daegu 41566, South Korea; Kyungpook Natl Univ, Dept Robot Engn, Daegu 41566, South Korea; Hanyang Univ, Dept Mech Engn, Seoul 133791, South Korea | Park, Kwan/AAC-1269-2021; Park, Kwan Kyu/L-1074-2016 | 57212647850; 57212660551; 55827729700; 56567311000 | puppet7@knu.ac.kr;parkhj0917@knu.ac.kr;kwankyu@hanyang.ac.kr;yihak@knu.ac.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 20 | 1 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2020 | 3.576 | 21.1 | 0.39 | 2025-06-25 | 5 | 7 | piezoelectricity; multilayer sensor; active noise canceling; underwater; adaptive gain control | TRANSDUCERS; COMPOSITES | Active noise canceling; Adaptive gain control; Multilayer sensor; Piezoelectricity; Underwater | Active noise control; Crystallography; Delay control systems; Fluorine compounds; Lead titanate; Multilayers; Piezoelectric actuators; Piezoelectric materials; Piezoelectricity; Underwater acoustics; Active noise canceling; Adaptive control schemes; Adaptive gain control; Environmental change; Multi-layer sensors; Multi-layered systems; Polyvinylidene fluorides; Underwater; Adaptive control systems | English | 2020 | 2020-01 | 10.3390/s20010134 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | CMOS Depth Image Sensor with Offset Pixel Aperture Using a Back-Side Illumination Structure for Improving Disparity | This paper presents a CMOS depth image sensor with offset pixel aperture (OPA) using a back-side illumination structure to improve disparity. The OPA method is an efficient way to obtain depth information with a single image sensor without additional external factors. Two types of apertures (i.e., left-OPA (LOPA) and right-OPA (ROPA)) are applied to pixels. The depth information is obtained from the disparity caused by the phase difference between the LOPA and ROPA images. In a CMOS depth image sensor with OPA, disparity is important information. Improving disparity is an easy way of improving the performance of the CMOS depth image sensor with OPA. Disparity is affected by pixel height. Therefore, this paper compared two CMOS depth image sensors with OPA using front-side illumination (FSI) and back-side illumination (BSI) structures. As FSI and BSI chips are fabricated via different processes, two similar chips were used for measurement by calculating the ratio of the OPA offset to pixel size. Both chips were evaluated for chief ray angle (CRA) and disparity in the same measurement environment. Experimental results were then compared and analyzed for the two CMOS depth image sensors with OPA. | Lee, Jimin; Kim, Sang-Hwan; Kwen, Hyeunwoo; Jang, Juneyoung; Chang, Seunghyuk; Park, JongHo; Lee, Sang-Jin; Shin, Jang-Kyoo | Kyungpook Natl Univ, Sch Elect Engn, 80 Deahak Ro, Daegu 41566, South Korea; Korea Adv Inst Sci & Technol, Ctr Integrated Smart Sensors, 291 Daehak Ro, Daejeon 34141, South Korea | 57193811541; 57190684837; 57216127432; 58524452400; 12759772300; 57196405801; 57213176195; 7402723873 | jmLee@ee.knu.ac.kr;shkim7@knu.ac.kr;hwkwen@knu.ac.kr;jyjang@knu.ac.kr;schang71@kaist.ac.kr;parkjh20@kaist.ac.kr;sjlee82@kaist.ac.kr;jkshin@ee.knu.ac.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 20 | 18 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2020 | 3.576 | 21.1 | 0.1 | 2025-06-25 | 1 | 1 | offset pixel aperture; CMOS depth image sensor; back-side illumination structure; improving disparity | Back-side illumination structure; CMOS depth image sensor; Improving disparity; Offset pixel aperture | CMOS integrated circuits; Image sensors; Pixels; Depth image sensors; Depth information; External factors; Phase difference; Pixel size; Single images; Image enhancement | English | 2020 | 2020-09 | 10.3390/s20185138 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Design of a Scalable and Fast YOLO for Edge-Computing Devices | With the increase in research cases of the application of a convolutional neural network (CNN)-based object detection technology, studies on the light-weight CNN models that can be performed in real time on the edge-computing devices are also increasing. This paper proposed scalable convolutional blocks that can be easily designed CNN networks of You Only Look Once (YOLO) detector which have the balanced processing speed and accuracy of the target edge-computing devices considering different performances by exchanging the proposed blocks simply. The maximum number of kernels of the convolutional layer was determined through simple but intuitive speed comparison tests for three edge-computing devices to be considered. The scalable convolutional blocks were designed in consideration of the limited maximum number of kernels to detect objects in real time on these edge-computing devices. Three scalable and fast YOLO detectors (SF-YOLO) which designed using the proposed scalable convolutional blocks compared the processing speed and accuracy with several conventional light-weight YOLO detectors on the edge-computing devices. When compared with YOLOv3-tiny, SF-YOLO was seen to be 2 times faster than the previous processing speed but with the same accuracy as YOLOv3-tiny, and also, a 48% improved processing speed than the YOLOv3-tiny-PRN which is the processing speed improvement model. Also, even in the large SF-YOLO model that focuses on the accuracy performance, it achieved a 10% faster processing speed with better accuracy of 40.4% mAP@0.5 in the MS COCO dataset than YOLOv4-tiny model. | Han, Byung-Gil; Lee, Joon-Goo; Lim, Kil-Taek; Choi, Doo-Hyun | Elect & Telecommun Res Inst, Daegu 42994, South Korea; Kyungpook Natl Univ, Sch Elect Engn, Grad Sch Elect & Elect Engn, Daegu 41566, South Korea | 55985294200; 56465647200; 7403175725; 7401642881 | kilyhan@etri.re.kr;leejg01679@etri.re.kr;ktl@etri.re.kr;dhc@ee.knu.ac.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 20 | 23 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2020 | 3.576 | 21.1 | 1.93 | 2025-06-25 | 25 | 36 | edge-computing; light-weight; mobile device; object detector; scalable; SF-YOLO | Edge-computing; Light-weight; Mobile device; Object detector; Scalable; SF-YOLO | Convolution; Edge computing; Large dataset; Object detection; Speed; CNN models; CNN network; Comparison test; Computing devices; Detection technology; Light weight; Processing speed; Real time; article; convolutional neural network; processing speed; Convolutional neural networks | English | 2020 | 2020-12 | 10.3390/s20236779 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Design of Secure Protocol for Cloud-Assisted Electronic Health Record System Using Blockchain | In the traditional electronic health record (EHR) management system, each medical service center manages their own health records, respectively, which are difficult to share on the different medical platforms. Recently, blockchain technology is one of the popular alternatives to enable medical service centers based on different platforms to share EHRs. However, it is hard to store whole EHR data in blockchain because of the size and the price of blockchain. To resolve this problem, cloud computing is considered as a promising solution. Cloud computing offers advantageous properties such as storage availability and scalability. Unfortunately, the EHR system with cloud computing can be vulnerable to various attacks because the sensitive data is sent over a public channel. We propose the secure protocol for cloud-assisted EHR system using blockchain. In the proposed scheme, blockchain technology is used to provide data integrity and access control using log transactions and the cloud server stores and manages the patient's EHRs to provide secure storage resources. We use an elliptic curve cryptosystems (ECC) to provide secure health data sharing with cloud computing. We demonstrate that the proposed EHR system can prevent various attacks by using informal security analysis and automated validation of internet security protocols and applications (AVISPA) simulation. Furthermore, we prove that the proposed EHR system provides secure mutual authentication using BAN logic analysis. We then compare the computation overhead, communication overhead, and security properties with existing schemes. Consequently, the proposed EHR system is suitable for the practical healthcare system considering security and efficiency. | Kim, MyeongHyun; Yu, SungJin; Lee, JoonYoung; Park, YoHan; Park, YoungHo | Kyungpook Natl Univ, Sch Elect Engn, Daegu 41566, South Korea; Keimyung Univ, Sch Comp Engn, Daegu 42601, South Korea | ; Lee, JoonYoung/AAM-9838-2021 | 57210278739; 57203974524; 57203970123; 55660095600; 56962990300 | kimmyeong123@knu.ac.kr;darkskiln@knu.ac.kr;harry250@knu.ac.kr;yhpark@kmu.ac.kr;parkyh@knu.ac.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 20 | 10 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2020 | 3.576 | 21.1 | 3.93 | 2025-06-25 | 51 | 84 | security protocol; cloud; blockchain; electronic health record; BAN logic; AVISPA simulation | AUTHENTICATION PROTOCOL; MANAGEMENT; SCHEME | AVISPA simulation; BAN logic; Blockchain; Cloud; Electronic health record; Security protocol | Blockchain; Cloud Computing; Computer Security; Computer Systems; Confidentiality; Electronic Health Records; Humans; Technology; Access control; Cloud computing; Computation theory; Cryptography; Data Sharing; Digital storage; eHealth; Network security; Records management; Communication overheads; Computation overheads; Electronic health record; Electronic health record systems; Elliptic Curve cryptosystems; Management systems; Mutual authentication; Security properties; cloud computing; computer security; computer system; confidentiality; electronic health record; human; technology; Blockchain | English | 2020 | 2020-05 | 10.3390/s20102913 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Designing Efficient Sinkhole Attack Detection Mechanism in Edge-Based IoT Deployment | The sinkhole attack in an edge-based Internet of Things (IoT) environment (EIoT) can devastate and ruin the whole functioning of the communication. The sinkhole attacker nodes (SHA s) have some properties (for example, they first attract the other normal nodes for the shortest path to the destination and when normal nodes initiate the process of sending their packets through that path (i.e., via SHA), the attacker nodes start disrupting the traffic flow of the network). In the presence of SHAs, the destination (for example, sink node i.e., gateway/base station) does not receive the required information or it may receive partial or modified information. This results in reduction of the network performance and degradation in efficiency and reliability of the communication. In the presence of such an attack, the throughput decreases, end-to-end delay increases and packet delivery ratio decreases. Moreover, it may harm other network performance parameters. Hence, it becomes extremely essential to provide an effective and competent scheme to mitigate this attack in EIoT. In this paper, an intrusion detection scheme to protect EIoT environment against sinkhole attack is proposed, which is named as SAD-EIoT. In SAD-EIoT, the resource rich edge nodes (edge servers) perform the detection of different types of sinkhole attacker nodes with the help of exchanging messages. The practical demonstration of SAD-EIoT is also provided using the well known NS2 simulator to compute the various performance parameters. Additionally, the security analysis of SAD-EIoT is conducted to prove its resiliency against various types of SHAs. SAD-EIoT achieves around 95.83% detection rate and 1.03% false positive rate, which are considerably better than other related existing schemes. Apart from those, SAD-EIoT is proficient with respect to computation and communication costs. Eventually, SAD-EIoT will be a suitable match for those applications which can be used in critical and sensitive operations (for example, surveillance, security and monitoring systems). | Pundir, Sumit; Wazid, Mohammad; Singh, Devesh Pratap; Das, Ashok Kumar; Rodrigues, Joel J. P. C.; Park, Youngho | Graph Era Deemed Be Univ, Dept Comp Sci & Engn, Dehra Dun 248002, Uttarakhand, India; Int Inst Informat Technol, Ctr Secur Theory & Algorithm Res, Hyderabad 500032, India; Fed Univ Piaui UFPI, BR-64049550 Teresina, PI, Brazil; Inst Telecomunicacoes, P-1049001 Lisbon, Portugal; Kyungpook Natl Univ, Sch Elect Engn, 80 Daehak Ro, Daegu 41566, South Korea | ; wazid, mohammad/X-4211-2018; WAZID, MOHAMMAD/X-4211-2018; Singh, Devesh/KIC-3651-2024; Rodrigues, Joel/A-8103-2013; Das, Ashok Kumar/U-2790-2019 | 56046765500; 55480987400; 55639324300; 55450732800; 25930566300; 56962990300 | sumitpundir.it@geu.ac.in;wazidkec2005@gmail.com;devesh.geu@gmail.com;iitkgp.akdas@gmail.com;joeljr@ieee.org;parkyh@knu.ac.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 20 | 5 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2020 | 3.576 | 21.1 | 1.89 | 2025-06-25 | 27 | 38 | sinkhole attack; internet of things (IoT); intrusion detection; edge computing; NS2 simulation; security | USER AUTHENTICATION SCHEME; INTRUSION DETECTION SYSTEM; RPL-BASED INTERNET; WIRELESS; SECURITY; MITIGATION; PERFORMANCE; THINGS | Edge computing; Internet of things (IoT); Intrusion detection; NS2 simulation; Security; Sinkhole attack | Edge computing; Gateways (computer networks); Intrusion detection; Network performance; Network security; Efficiency and reliability; Internet of Things (IOT); Intrusion detection scheme; NS-2 simulations; Performance parameters; Security; Security and monitoring; Sinkhole attack; Internet of things | English | 2020 | 2020-03 | 10.3390/s20051300 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Determining the Fracture Process Zone Length and Mode I Stress Intensity Factor in Concrete Structures via Mechanoluminescent Technology | The mechanoluminescent (ML) technology that is being developed as a new and substitutive technology for structural health monitoring systems (SHMS) comprises stress/strain sensing micro-/nanoparticles embedded in a suitable binder, digital imaging system, and digital image processing techniques. The potential of ML technology to reveal the fracture process zone (FPZ) that is commonly found in structural materials like concrete and to calculate the stress intensity factor (SIF) of concrete, which are crucial for SHMS, has never been done before. Therefore, the potential of ML technology to measure the length of the FPZ and to calculate the SIF has been demonstrated in this work by considering a single-edge notched bend (SENB) test of the concrete structures. The image segmentation approach based on the histogram of an ML image as well the skeletonization of an ML image have been introduced in this work to facilitate the measurement of the length of ML pattern, crack, and FPZ. The results show ML technology has the potential to determine fracture toughness, to visualize FPZ and cracks, and to measure their lengths in structural material like concrete, which makes it applicable to structural health monitoring systems (SHMS) to characterize the structural integrity of structures. | Kim, Seong-Kyum; Shin, Ho Geun; Timilsina, Suman; Kim, Ji Sik | Kumoh Natl Inst Technol, Dept Civil Engn, 61 Daehak Ro, Gumi Si 39177, Gyeongsangbuk D, South Korea; Kyungpook Natl Univ, Sch Nano & Adv Mat Engn, Kyeongbuk 37224, South Korea | Timilisina, Suman/GLT-8029-2022 | 36706342900; 57215092476; 55844969100; 16444690100 | skim@kumoh.ac.kr;ghrms98@gmail.com;sumantimilsina@knu.ac.kr;jisikkim@knu.ac.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 20 | 5 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2020 | 3.576 | 21.1 | 0.46 | 2025-06-25 | 7 | 9 | fracture process zone; stress intensity factor; mechanoluminescent (ML) technology; image segmentation; skeletonization; structural health monitoring | CRACK-PROPAGATION; VISUALIZATION; SRAL2O4EU2+ | Fracture process zone; Image segmentation; Mechanoluminescent (ML) technology; Skeletonization; Stress intensity factor; Structural health monitoring | Concrete buildings; Concrete construction; Concretes; Cracks; Digital image storage; Embedded systems; Fracture toughness; Image segmentation; Monitoring; Stress intensity factors; Digital image processing technique; Digital imaging system; Fracture process zone; Mode I stress intensity factor; Skeletonization; Stress intensity factor (SIF); Stress/strain; Structural health monitoring systems; Structural health monitoring | English | 2020 | 2020-03 | 10.3390/s20051257 | 바로가기 | 바로가기 | 바로가기 | 바로가기 |
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