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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 | A Secure and Lightweight Authentication Protocol for IoT-Based Smart Homes | With the information and communication technologies (ICT) and Internet of Things (IoT) gradually advancing, smart homes have been able to provide home services to users. The user can enjoy a high level of comfort and improve his quality of life by using home services provided by smart devices. However, the smart home has security and privacy problems, since the user and smart devices communicate through an insecure channel. Therefore, a secure authentication protocol should be established between the user and smart devices. In 2020, Xiang and Zheng presented a situation-aware protocol for device authentication in smart grid-enabled smart home environments. However, we demonstrate that their protocol can suffer from stolen smart device, impersonation, and session key disclosure attacks and fails to provide secure mutual authentication. Therefore, we propose a secure and lightweight authentication protocol for IoT-based smart homes to resolve the security flaws of Xiang and Zheng's protocol. We proved the security of the proposed protocol by performing informal and formal security analyses, using the real or random (ROR) model, Burrows-Abadi-Needham (BAN) logic, and the Automated Validation of Internet Security Protocols and Applications (AVISPA) tool. Moreover, we provide a comparison of performance and security properties between the proposed protocol and related existing protocols. We demonstrate that the proposed protocol ensures better security and lower computational costs than related protocols, and is suitable for practical IoT-based smart home environments. | Oh, JiHyeon; Yu, SungJin; Lee, JoonYoung; Son, SeungHwan; Kim, MyeongHyun; Park, YoungHo | Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu 41566, South Korea; Elect & Telecommun Res Inst, Daejeon 34129, South Korea; Kyungpook Natl Univ, Sch Elect Engn, Daegu 41566, South Korea | ; Lee, JoonYoung/AAM-9838-2021 | 57222066296; 57203974524; 57203970123; 57221744477; 57210278739; 56962990300 | chldlstnr071@knu.ac.kr;darkskiln@knu.ac.kr;harry250@knu.ac.kr;sonshawn@knu.ac.kr;kimmyeong123@knu.ac.kr;parkyh@knu.ac.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 21 | 4 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2021 | 3.847 | 28.9 | 5.38 | 2025-07-30 | 58 | 85 | smart homes; IoT; authentication; BAN logic; ROR model; AVISPA | KEY MANAGEMENT PROTOCOL; PROVABLY SECURE; SCHEME; INTERNET; PRIVACY; DESIGN; ACCESS; ROBUST | Authentication; AVISPA; BAN logic; IoT; ROR model; Smart homes | Ambient intelligence; Authentication; Automation; Computation theory; Cryptography; Intelligent buildings; Network security; Comparison of performance; Device authentications; Formal security analysis; Information and Communication Technologies; Internet of Things (IOT); Lightweight authentication protocols; Mutual authentication; Secure authentications; article; home environment; internet of things; internet security; logic; validation process; Internet of things | English | 2021 | 2021-02 | 10.3390/s21041488 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | A Study on the Performance of a Silicon Photodiode Sensor for a Particle Dosimeter and Spectrometer | A lunar vehicle radiation dosimeter (LVRAD) has been proposed for studying the radiation environment on the lunar surface and evaluating its impact on human health. The LVRAD payload comprises four systems: a particle dosimeter and spectrometer (PDS), a tissue-equivalent dosimeter, a fast neutron spectrometer, and an epithermal neutron spectrometer. A silicon photodiode sensor with compact readout electronics was proposed for the PDS. The PDS system aims to measure protons with 10-100 MeV of energy and assess dose in the lunar space environment. The manufactured silicon photodiode sensor has an effective area of 20 mm x 20 mm and thickness of 650 mu m; the electronics consist of an amplifier, analog pulse processor, and a 12-bit analog-to-digital converter for signal readout. We studied the responses of silicon sensors which were manufactured with self-made electronics to gamma rays with a wide range of energies and proton beams. | Kim, Bobae; Nam, Uk-Won; Kim, Sunghwan; Youn, Sukwon; Park, Won-Kee; Sohn, Jongdae; Kim, Hong Joo; Lee, Seh-Wook; Hwang, Junga; Ye, Sung-Joon; Jun, Insoo; Choi, Young-Jun | Kyungpook Natl Univ, Dept Phys, Daegu 41566, South Korea; Korea Astron & Space Sci Inst, Div Space Sci, Daejeon 34055, South Korea; Cheongju Univ, Dept Radiol, Cheongju 28497, South Korea; Seoul Natl Univ, Grad Sch Convergence Sci & Technol, Dept Appl Bioengn, Seoul 08826, South Korea; Univ Sci & Technol, Dept Astron & Space Sci, Daejeon 34113, South Korea; CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA | Kim, Hong Joo/AAE-1178-2022; Hwang, Junga/R-8719-2019 | 57218992867; 6602840978; 36165569900; 57210900037; 35285730800; 55193404200; 59051568100; 57839727600; 35187387300; 7202088315; 6701373583; 55685945500 | bokim@cern.ch;uwnam@kasi.re.kr;kimsh@cju.ac.kr;grasshoppe5@snu.ac.kr;wkpark@kasi.re.kr;jdsohn@kasi.re.kr;hongjoo@knu.ac.kr;sehwook.lee@knu.ac.kr;jahwang@kasi.re.kr;sye@snu.ac.kr;insoo.jun@jpl.nasa.gov;yjchoi@kasi.re.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 21 | 23 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2021 | 3.847 | 28.9 | 0.15 | 2025-07-30 | 3 | 2 | silicon photodiode sensor; proton spectrometer; gamma rays; radiation dosimeter | CALIBRATION; RESPONSES | Gamma rays; Proton spectrometer; Radiation dosimeter; Silicon photodiode sensor | Gamma Rays; Humans; Neutrons; Protons; Radiation Dosimeters; Radiometry; Silicon; Analog to digital conversion; Automobile manufacture; Calorimeters; Gamma rays; Neutron detectors; Neutrons; Photodiodes; Silicon; proton; silicon; A-particles; Energy; Gamma-rays; Neutrons spectrometers; Performance; Photodiode sensors; Proton spectrometer; Radiation dosimeters; Silicon photodiode; Silicon photodiode sensor; dosimeter; gamma radiation; human; neutron; radiometry; Dosimeters | English | 2021 | 2021-12 | 10.3390/s21238029 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | A Transformer-Based Neural Machine Translation Model for Arabic Dialects That Utilizes Subword Units | Languages that allow free word order, such as Arabic dialects, are of significant difficulty for neural machine translation (NMT) because of many scarce words and the inefficiency of NMT systems to translate these words. Unknown Word (UNK) tokens represent the out-of-vocabulary words for the reason that NMT systems run with vocabulary that has fixed size. Scarce words are encoded completely as sequences of subword pieces employing the Word-Piece Model. This research paper introduces the first Transformer-based neural machine translation model for Arabic vernaculars that employs subword units. The proposed solution is based on the Transformer model that has been presented lately. The use of subword units and shared vocabulary within the Arabic dialect (the source language) and modern standard Arabic (the target language) enhances the behavior of the multi-head attention sublayers for the encoder by obtaining the overall dependencies between words of input sentence for Arabic vernacular. Experiments are carried out from Levantine Arabic vernacular (LEV) to modern standard Arabic (MSA) and Maghrebi Arabic vernacular (MAG) to MSA, Gulf-MSA, Nile-MSA, Iraqi Arabic (IRQ) to MSA translation tasks. Extensive experiments confirm that the suggested model adequately addresses the unknown word issue and boosts the quality of translation from Arabic vernaculars to Modern standard Arabic (MSA). | Baniata, Laith H.; Ampomah, Isaac K. E.; Park, Seyoung | Kyungpook Natl Univ, Sch Comp Sci & Engn, 80 Daehak Ro, Daegu 41566, South Korea; Univ Durham, Dept Comp Sci, Stockton Rd, Durham DH1 3LE, England | Baniata, Laith/S-3656-2018 | 57204949968; 57196026469; 14045781800 | laith@knu.ac.kr;Isaac.k.ampomah@durham.ac.uk;seyoung@knu.ac.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 21 | 19 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2021 | 3.847 | 28.9 | 1.47 | 2025-07-30 | 12 | 23 | neural machine translation (NMT); transformer; Arabic dialects; modern standard Arabic; subword units; multi-head attention; shared vocabulary; self-attention | Arabic dialects; Modern standard Arabic; Multi-head attention; Neural machine translation (NMT); Self-attention; Shared vocabulary; Subword units; Transformer | Language; Vocabulary; Computational linguistics; Computer aided language translation; Arabic dialects; Modern standard arabic; Modern standards; Multi-head attention; Neural machine translation; Self-attention; Shared vocabulary; Standard arabics; Subword units; Transformer; language; vocabulary; Neural machine translation | English | 2021 | 2021-10 | 10.3390/s21196509 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | A Unified Approach to Spatial Proximity Query Processing in Dynamic Spatial Networks | Nearest neighbor (NN) and range (RN) queries are basic query types in spatial databases. In this study, we refer to collections of NN and RN queries as spatial proximity (SP) queries. At peak times, location-based services (LBS) need to quickly process SP queries that arrive simultaneously. Timely processing can be achieved by increasing the number of LBS servers; however, this also increases service costs. Existing solutions evaluate SP queries sequentially; thus, such solutions involve unnecessary distance calculations. This study proposes a unified batch algorithm (UBA) that can effectively process SP queries in dynamic spatial networks. With the proposed UBA, the distance between two points is indicated by the travel time on the shortest path connecting them. The shortest travel time changes frequently depending on traffic conditions. The goal of the proposed UBA is to avoid unnecessary distance calculations for nearby SP queries. Thus, the UBA clusters nearby SP queries and exploits shared distance calculations for query clusters. Extensive evaluations using real-world roadmaps demonstrated the superiority and scalability of UBA compared with state-of-the-art sequential solutions. | Cho, Hyung-Ju | Kyungpook Natl Univ, Dept Software, 2559 Gyeongsang Daero, Sangju 37224, Gyeongsangbuk D, South Korea | 55177091600 | hyungju@knu.ac.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 21 | 16 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2021 | 3.847 | 28.9 | 0 | 2025-07-30 | 0 | 0 | spatial proximity query; nearest neighbor query; range query; unified batch algorithm; dynamic spatial network | EFFICIENT SHARED EXECUTION; ROAD NETWORKS; SHORTEST-PATH; JOINS | Dynamic spatial network; Nearest neighbor query; Range query; Spatial proximity query; Unified batch algorithm | Algorithms; Databases, Factual; Telecommunication services; Travel time; Batch algorithms; Distance calculation; Nearest neighbors; Shortest travel time; Spatial proximity; State of the art; Traffic conditions; Unified approach; algorithm; factual database; Location based services | English | 2021 | 2021-08 | 10.3390/s21165258 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Aerodynamic Characteristics and Lateral Displacements of a Set of Two Buildings in a Linked Tall Building System | This study evaluates the aerodynamic characteristics and lateral displacements of two staggered buildings in a linked-building (LB) system. Particle image velocimetry and pressure measurements are employed, and the lateral displacement is evaluated using a 3-dimensional analytical model. When the gap distance between two non-linked buildings is small, the wind flows in a narrow jet, and a strong suction is generated on the inner surfaces of the two buildings, leading to a large cross-wind-induced response. However, the cross-wind-induced response is significantly reduced when a link is installed, because the suction forces generated from the buildings are in opposite directions and have a negative aerodynamic correlation. Conversely, with a large gap distance, the buildings at the front obstruct the wind blowing toward the rear buildings. Therefore, while the pressure distribution, wind-force coefficients, and wind-induced responses of the front and rear buildings show similar trends, the magnitude of impact on the front building is larger than that on the rear building. Installing a link is demonstrated to reduce the wind-induced response of the buildings in an LB system. However, the reduction in the along-wind-induced response is less than that in the cross-wind-induced response when the gap distance is small. | Chen, Zengshun; Kim, Bubryur; Lee, Dong-Eun | Chongqing Univ, Sch Civil Engn, Chongqing 400045, Peoples R China; Dong A Univ, Dept Architectural Engn, Busan 49315, South Korea; Dong A Univ, Dept ICT Integrated Ocean Smart Cities Engn, Busan 49315, South Korea; Kyungpook Natl Univ, Sch Architecture Civil Environm & Energy Engn, 80 Daehak Ro, Daegu 41566, South Korea | 55866149500; 57198355299; 56605563300 | zengshunchen@cqu.edu.cn;rlaqjqfuf@dau.ac.kr;dolee@knu.ac.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 21 | 12 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2021 | 3.847 | 28.9 | 0.52 | 2025-07-30 | 7 | 7 | linked tall building; particle image velocimetry; pressure measurement; staggered arrangement; wind-induced response | STAGGERED CIRCULAR-CYLINDERS; EQUAL DIAMETER; FLOW PATTERNS; POD ANALYSIS; INTERFERENCE; PRESSURE; RESPONSES; BEHAVIOR; FORCES | Linked tall building; Particle image velocimetry; Pressure measurement; Staggered arrangement; Wind-induced response | Tall buildings; Velocity measurement; 3-dimensional; Aerodynamic characteristics; Building systems; Inner surfaces; Lateral displacements; Particle image velocimetries; Wind force coefficient; Wind-induced response; article; controlled study; particle image velocimetry; pressure measurement; suction; Aerodynamics | English | 2021 | 2021-06 | 10.3390/s21124046 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | An Enhanced Indoor Positioning Algorithm Based on Fingerprint Using Fine-Grained CSI and RSSI Measurements of IEEE 802.11n WLAN | Received signal strength indication (RSSI) obtained by Medium Access Control (MAC) layer is widely used in range-based and fingerprint location systems due to its low cost and low complexity. However, RSS is affected by noise signals and multi-path, and its positioning performance is not stable. In recent years, many commercial WiFi devices support the acquisition of physical layer channel state information (CSI). CSI is an index that can characterize the signal characteristics with more fine granularity than RSS. Compared with RSS, CSI can avoid the effects of multi-path and noise by analyzing the characteristics of multi-channel sub-carriers. To improve the indoor location accuracy and algorithm efficiency, this paper proposes a hybrid fingerprint location technology based on RSS and CSI. In the off-line phase, to overcome the problems of low positioning accuracy and fingerprint drift caused by signal instability, a methodology based on the Kalman filter and a Gaussian function is proposed to preprocess the RSSI value and CSI amplitude value, and the improved CSI phase is incorporated after the linear transformation. The mutation and noisy data are then effectively eliminated, and the accurate and smoother outputs of the RSSI and CSI values can be achieved. Then, the accurate hybrid fingerprint database is established after dimensionality reduction of the obtained high-dimensional data values. The weighted k-nearest neighbor (WKNN) algorithm is applied to reduce the complexity of the algorithm during the online positioning stage, and the accurate indoor positioning algorithm is accomplished. Experimental results show that the proposed algorithm exhibits good performance on anti-noise ability, fusion positioning accuracy, and real-time filtering. Compared with CSI-MIMO, FIFS, and RSSI-based methods, the proposed fusion correction method has higher positioning accuracy and smaller positioning error. | Wang, Jingjing; Park, Joongoo | Kyungpook Natl Univ, Sch Elect & Elect Engn, 80 Daehak Ro, Daegu 41566, South Korea; Kyungpook Natl Univ, Mobile Software & Nav Lab, Room 723,IT-1,80 Daehak Ro, Deagu 41566, South Korea | 57202161515; 24329712800 | wjj0219@naver.com;jgpark@knu.ac.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 21 | 8 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2021 | 3.847 | 28.9 | 3.61 | 2025-07-30 | 42 | 55 | indoor fingerprinting localization; Gaussian filter; Kalman filter; received signal strength indicator; channel state information | CHANNEL STATE INFORMATION; LOCALIZATION | Channel state information; Gaussian filter; Indoor fingerprinting localization; Kalman filter; Received signal strength indicator | Clustering algorithms; Computational complexity; Dimensionality reduction; IEEE Standards; Indoor positioning systems; Kalman filters; Linear transformations; Location; Mathematical transformations; Medium access control; Mobile computing; Nearest neighbor search; Algorithm efficiency; High dimensional data; Medium access control layer; Positioning performance; Received signal strength indication; Signal characteristic; Signal instabilities; Weighted k-nearest neighbors; Channel state information | English | 2021 | 2021-04 | 10.3390/s21082769 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Analysis of PLA Blends Using Weighted Relaxation Spectrum | This paper suggests a viscoelastic method to analyze microscopic structure of polymer blends which could be characterized by DMA and TEM. The viscoelastic method is to use weighted relaxation spectrum. We used poly(lactic acid)/poly(butylene adipate-co-terephthalate) and poly(lactic acid)/poly(vinyl acetate) blends in order to check the validity of the viscoelastic method. The former is an immiscible blend and the latter is a miscible blend. | Jang, Hyunkyu; Lee, Junghaeng; Kwon, Mi Kyung; Seo, Kwan Ho; Cho, Kwang Soo | Kyungpook Natl Univ, Dept Polymer Sci & Engn, Daegu 41566, South Korea; Daegu Gyeongbuk Inst Sci & Technol DGIST, Div Biotechnol, Daegu 42988, South Korea | 57221782583; 57198781113; 57150067700; 7201838965; 56316379300 | polphy@knu.ac.kr; | FIBERS AND POLYMERS | FIBER POLYM | 1229-9197 | 1875-0052 | 22 | 2 | SCIE | MATERIALS SCIENCE, TEXTILES;POLYMER SCIENCE | 2021 | 2.347 | 28.9 | 0.2 | 2025-07-30 | 5 | 4 | Poly(lactic acid); Poly(butylene adipate-co-terephthalate); Poly(vinyl acetate); Weighted relaxation spectrum; Microstructure | ADIPATE-CO-TEREPHTHALATE) BLENDS; RHEOLOGICAL PROPERTIES; MORPHOLOGY; MISCIBILITY; PLA/PBAT; ACID) | Microstructure; Poly(butylene adipate-co-terephthalate); Poly(lactic acid); Poly(vinyl acetate); Weighted relaxation spectrum | Adipates; Lactic Acid; Mixtures; Paper; Relaxation; Transmission Electron Microscopy; Viscoelasticity; Lactic acid; Viscoelasticity; Adipates; Immiscible blends; Microscopic structures; Miscible blend; Poly lactic acid; Relaxation spectrum; Terephthalate; Vinyl acetates; Polymer blends | English | 2021 | 2021-02 | 10.1007/s12221-021-0121-z | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Asymmetric Diffraction in Plasmonic Meta-Gratings Using an IT-Shaped Nanoslit Array | Diffraction is a fundamental phenomenon that reveals the wave nature of light. When a plane wave is transmitted or reflected from a grating or other periodic structures, diffracted light waves propagate at several angles that are specified by the period of the given structure. When the optical period is shorter than the wavelength, constructive interference of diffracted light rays from the subwavelength-scale grating forms a uniform plane wave. Many studies have shown that through the appropriate design of meta-atom geometry, metasurfaces can be used to control light properties. However, most semitransparent metasurfaces are designed to perform symmetric operation with regard to diffraction, meaning that light diffraction occurs identically for front- and back-side illumination. We propose a simple single-layer plasmonic metasurface that achieves asymmetric diffraction by optimizing the transmission phase from two types of nanoslits with I- and T-shaped structures. As the proposed structure is designed to have a different effective period for each observation side, it is either diffractive or nondiffractive depending on the direction of observation. The designed structure exhibits a diffraction angle of 54 degrees, which can be further tuned by applying different period conditions. We expect the proposed asymmetric diffraction meta-grating to have great potential for the miniaturized optical diffraction control systems in the infrared band and compact optical diffraction filters for integrated optics. | Jeong, Hee-Dong; Moon, Seong-Won; Lee, Seung-Yeol | Kyungpook Natl Univ, Coll IT Engn, Sch Elect & Elect Engn, Daegu 41566, South Korea; Pohang Univ Sci & Technol, Dept Mech Engn, Pohang 37673, South Korea | Lee, Seungwoo/U-8056-2017 | 57193707766; 57214123350; 55881869300 | heedong@knu.ac.kr;swmoon@postech.ac.kr;seungyeol@knu.ac.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 21 | 12 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2021 | 3.847 | 28.9 | 0.29 | 2025-07-30 | 4 | 5 | asymmetric diffraction; metasurface; nanostructured optical filter; non-reciprocal | METASURFACE; ULTRATHIN; DISPLAY; PHASE; TRANSMISSION | Asymmetric diffraction; Metasurface; Nanostructured optical filter; Non‐reciprocal | Diffraction; Elastic waves; Flight control systems; Geometry; Light; Nanostructures; Plasmonics; Appropriate designs; Backside illumination; Constructive interference; Diffraction angle; Light diffraction; Optical diffractions; Shaped structures; Transmission phase; Diffraction gratings | English | 2021 | 2021-06 | 10.3390/s21124097 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | BA-MPCUBIC: Bottleneck-Aware Multipath CUBIC for Multipath-TCP | The Congestion Control Algorithm (CCA) in the Multipath Transmission Control Protocol (MPTCP) is fundamental to controlling the flow of data through multiple subflows (SF) simultaneously. The MPTCP CCA has two design goals: first, always ensure better throughput than single path TCP (SPTCP) flows, and second, collectively, MPTCP SFs going through a shared bottleneck (SB) should occupy bandwidth fairly, i.e., close to the bandwidth occupied by an SPTCP flow. Although several MPTCP CCAs exist, they primarily focus on specific scenarios and could not satisfy the design goals in diverse and dynamic scenarios. Recently, CUBIC has become a widely used CCA for SPTCP for its better compatibility with high-speed internet. CUBIC's effective implementation in the MPTCP is expected to provide improved throughput and fairer behavior, thus satisfying the design goals. However, although the current multipath CUBIC (MPCUBIC) implementation ensures better fairness, it fails to ensure better throughput. We believe the application of same rule for SFs going through an SB and non-shared bottleneck (NSB) makes it difficult for MPCUBIC to adapt to diverse and dynamically changing network scenarios, thus resulting in poor throughput. Therefore, we present an improved version of MPCUBIC, namely bottleneck-aware MPCUBIC (BA-MPCUBIC), to resolve the throughput issue. First, we deploy an innovative bottleneck detection method that successfully differentiates between an SB and NSB based on round-trip-time, enhanced congestion notification, and packet loss. Then, we implement SPTCP CUBIC and MPCUBIC as the CCAs for SFs going through NSBs and SBs, respectively. Extensive emulation experiments demonstrate that the BA-MPCUBIC successfully detects SBs and NSBs with the highest detection accuracy and the lowest detection time compared with other approaches. Moreover, BA-MPCUBIC successfully satisfies the MPTCP design goals in the considered diverse and dynamic scenarios by ensuring both better throughput and fairness. | Mahmud, Imtiaz; Lubna, Tabassum; Kim, Geon-Hwan; Cho, You-Ze | Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu 41566, South Korea | Mahmud, Imtiaz/R-1089-2019 | 56203487900; 57205303733; 57189040274; 7404469829 | imtiaz@knu.ac.kr;lubna@knu.ac.kr;kgh76@ee.knu.ac.kr;yzcho@ee.knu.ac.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 21 | 18 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2021 | 3.847 | 28.9 | 0.22 | 2025-07-30 | 3 | 3 | multipath-TCP; shared bottleneck detection; multipath CUBIC; coupled multipath CUBIC; coupled congestion control | CONGESTION CONTROL | Coupled congestion control; Coupled multipath CUBIC; Multipath CUBIC; Multipath-TCP; Shared bottleneck detection | Algorithms; Internet; Bandwidth; Bottles; Bottleneck detection; Detection accuracy; Detection time; Dynamic scenarios; High speed internet; Multi-path transmission; Network scenario; Round-trip time; algorithm; Internet; Traffic congestion | English | 2021 | 2021-09 | 10.3390/s21186289 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Case Report: Development of Type 1 Autoimmune Pancreatitis in an Adolescent With Ulcerative Colitis Mimicking Pancreatic Cancer | Introduction: Autoimmune pancreatitis (AIP) is a rare extraintestinal manifestation of inflammatory bowel disease (IBD) which is typically responsive to corticosteroid treatment. Case Presentation: We report a case of a 17-year-old male diagnosed with ulcerative colitis who subsequently developed acute pancreatitis. Blood tests demonstrated elevated pancreatic enzyme levels of amylase (1319 U/L) and lipase (809 U/L). Abdominal computed tomography revealed peripancreatic fat stranding and the presence of a perisplenic pseudocyst. Azathioprine and mesalazine were stopped as possible causes of drug-induced pancreatitis. However, pancreatic enzymes remained elevated and corticosteroid treatment was started. Despite corticosteroid therapy, amylase and lipase levels continued to increase. Infliximab was started due to a flare in gastrointestinal symptoms of ulcerative colitis. Follow-up abdominal ultrasonography revealed a pancreatic tail mass. Tumor markers, including CA 19-9, were elevated and atypical cells were seen on histological examination of an endoscopic ultrasonography-guided fine needle aspiration biopsy. Surgical pancreaticosplenectomy was performed for suspected pancreatic neoplasm. Surprisingly, histology revealed chronic pancreatitis with storiform fibrosis and infiltration of IgG4-positive cells, compatible with AIP type 1. Thereafter, pancreatic enzymes gradually decreased to normal levels and the patient has been in remission for 9 months on infliximab monotherapy. Conclusion: Pediatric gastroenterologists should keep in mind that AIP may develop during the natural course of pediatric IBD. Moreover, the development of pancreatic fibrosis may be non-responsive to corticosteroid treatment and mimic pancreatic neoplasia. | Choi, Sujin; Lee, Hae Jeong; Seo, An Na; Bae, Han Ik; Kwon, Hyung Jun; Cho, Chang Min; Lee, So Mi; Choe, Byung-Ho; Kang, Ben | Kyungpook Natl Univ, Sch Med, Dept Pediat, Daegu, South Korea; Sungkyunkwan Univ, Samsung Changwon Hosp, Dept Pediat, Sch Med, Chang Won, South Korea; Kyungpook Natl Univ, Sch Med, Dept Pathol, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Dept Surg, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Dept Internal Med, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Dept Radiol, Daegu, South Korea | Choe, Byung-Ho/KSM-6251-2024; 康, 奔/JMQ-0812-2023 | 57223972405; 35722209100; 55804153700; 7103224222; 57199757347; 57158287600; 56824903400; 57574977300; 57194823199 | benkang@knu.ac.kr; | FRONTIERS IN PEDIATRICS | FRONT PEDIATR | 2296-2360 | 9 | SCIE | PEDIATRICS | 2021 | 3.569 | 28.9 | 0.47 | 2025-07-30 | 3 | 3 | autoimmune pancreatitis; ulcerative colitis; inflammatory bowel disease; pancreatic cancer; IgG4 | INFLAMMATORY-BOWEL-DISEASE; FEATURES; CHILDREN | autoimmune pancreatitis; IgG4; inflammatory bowel disease; pancreatic cancer; ulcerative colitis | amylase; azathioprine; C reactive protein; calgranulin; carbohydrate antigen; immunoglobulin G4; infliximab; mesalazine; methylprednisolone; prednisolone; triacylglycerol lipase; abdomen; abdominal pain; acute pancreatitis; adolescent; amylase blood level; Article; autoimmune pancreatitis; body weight loss; case report; cell infiltration; chronic pancreatitis; clinical article; colonoscopy; computer assisted tomography; cystic fibrosis; disease severity; drug induced disease; drug withdrawal; endoscopic ultrasound guided fine needle biopsy; erosion; erythrocyte sedimentation rate; hematochezia; hemoglobin blood level; histopathology; hospital admission; human; human tissue; laboratory test; laparoscopy; leukocyte count; maintenance therapy; male; nuclear magnetic resonance imaging; occult blood test; pancolitis; pancreas cancer; pancreas pseudocyst; pancreas surgery; pancreatitis; patient referral; pediatric hospital; physical examination; platelet count; positron emission tomography-computed tomography; preoperative period; protein blood level; rectum ulcer; recurrent disease; remission; sigmoidoscopy; triacylglycerol lipase blood level; ulcerative colitis | English | 2021 | 2021-11-26 | 10.3389/fped.2021.791840 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Change of Ruminoreticular Temperature and Body Activity before and after Parturition in Hanwoo (Bos taurus coreanae) Cows | How do body temperature and activity change before and after parturition in pregnant cows? Changes in body temperature such as ruminal, rectal, and vaginal temperature during the parturition have been reported, but there are no results of the simultaneous observation of body temperature and activity. The aim of this study was to simultaneously confirm changes in the ruminoreticular temperature and body activity before and after parturition using the ruminoreticular bio-capsule sensor every 1 h. The 55 pregnant cows were used for the experiment, the ruminoreticular bio-capsule sensor was inserted and stabilized, and the ruminoreticular temperature and body activity were measured. The ruminoreticular temperature was lower by 0.5 degrees from -24 h to -3 h in parturition compared to 48 h before parturition and then recovered again after parturition. Body activity increased temporarily at the time of parturition and 12 h after parturition. Therefore, the ruminoreticular temperature and body activity before and after parturition was simultaneously confirmed in pregnant cows. | Kim, Daehyun; Ha, Jaejung; Kwon, Woo-Sung; Moon, Joonho; Gim, Gyeong-Min; Yi, Junkoo | Livestock Res Inst, 186 Daeryongsan Ro, Yeongju 36052, Gyeongsangbuk D, South Korea; Kyungpook Natl Univ, Dept Anim Sci & Biotechnol, Sangju 41566, South Korea; Lartbio Co Ltd, 12 Floor,234 Teheran Ro, Seoul 06221, South Korea; Seoul Natl Univ, Lab Theriogenol & Biotechnol, Dept Vet Clin Sci, Coll Vet Med, 1 Gwanak Ro, Seoul 08826, South Korea | Yi, Junkoo/JBR-8507-2023; Moon, Joonho/KFQ-2464-2024; Kwon, Woo-Sung/J-6731-2019; Kwon, Woo-Sung/J-4391-2014 | 57211228843; 55848402300; 54383715800; 56410309500; 57221405051; 56182537200 | chunja2411@korea.kr;hjjggo@korea.kr;wskwon@knu.ac.kr;kuma618@gmail.com;tty4447@naver.com;79lee38@korea.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 21 | 23 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2021 | 3.847 | 28.9 | 0.15 | 2025-07-30 | 2 | 3 | parturition; bio-capsule sensor; ruminoreticular temperature; body activity; Hanwoo | DAIRY-COWS; PERIOD | Bio‐capsule sensor; Body activity; Hanwoo; Parturition; Ruminoreticular temperature | Animals; Body Temperature; Cattle; Female; Parturition; Physiological Phenomena; Pregnancy; Temperature; Vagina; Bio‐capsule sensor; Body activities; Body temperature; Bos taurus; Hanwoo; Parturition; Ruminoreticular temperature; Simultaneous observation; animal; birth; body temperature; bovine; case report; female; physiological process; pregnancy; temperature; vagina; Physiology | English | 2021 | 2021-12 | 10.3390/s21237892 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Cobalt(II) complexes supported by iminomethylpyridine derived ligands: Synthesis, characterization and catalytic application towards methyl methacrylate and rac-lactide polymerisations | A series of cobalt(II) complexes, [LnCoCl2] (L-n = L-A - L-F), supported by iminomethylpyridine derivatives have been synthesized. The crystal structures of [LACoCl2], [LDCoCl2] and [LECoCl2] were identified by X-ray diffraction studies and they showed five-coordinated distorted square pyramidal geometries. All the complexes synthesized were evaluated as potential mediators for the coordination polymerisation of methyl methacrylate (MMA), in the presence of modified methylaluminoxane (MMAO). The Co(II) complex with the ligand (E)-N-1,N-1-dimethyl-N-3-(pyridin-2-ylmethylene)propane-1,3-diamine displayed the highest catalytic activity (4.48 x 10(4) g PMMA / mol Co h) for MMA polymerisation. Regardless of the ligand architecture, syndio-enriched poly(methyl methacrylate) (PMMAs) with high molecular weights (11.1 x 10(5) g/mol) have been furnished. Additionally, the in situ generated dimethyl Co(II) complexes polymerized racemic-lactide (rac-LA), yielding hetero-enriched polylactide (PLA). Importantly, the stereoselectivities of the Co(II) complexes towards PLA have been found to be influenced by the steric and electronic properties of the amine substituents. (C) 2020 Published by Elsevier Ltd. | Lee, Jaegyeong; Kim, Kyeonghun; Lee, Hyosun; Nayab, Saira | Kyungpook Natl Univ, Dept Chem, 80 Daehakro, Daegu 41566, South Korea; Kyungpook Natl Univ, Greennano Mat Res Ctr, 80 Daehakro, Daegu 41566, South Korea; Shaheed Benazir Bhutto Univ, Dept Chem, Sheringal Dir U, Khyber Pakhtunk, Pakistan | ; Nayab, Saira/JBS-3013-2023 | 57202254509; 57221464273; 15750846000; 36490286400 | hyosunlee@knu.ac.kr;drnayab@sbbu.edu.pk; | POLYHEDRON | POLYHEDRON | 0277-5387 | 1873-3719 | 196 | SCIE | CHEMISTRY, INORGANIC & NUCLEAR;CRYSTALLOGRAPHY | 2021 | 2.975 | 28.9 | 1 | 2025-07-30 | 13 | 13 | Cobalt(II) complexes; Iminomethylpyridine; Polymerization; Methyl methacrylate; Raclactide | Cobalt(II) complexes; Iminomethylpyridine; Methyl methacrylate; Polymerization; Raclactide | Acrylic monomers; Catalyst activity; Chelation; Cobalt compounds; Electronic properties; Esters; Ligands; Synthesis (chemical); Catalytic applications; Cobalt(II) complex; Crystals structures; Iminomethylpyridine; Lactide polymerization; Methyl methacrylates; Poly lactide; Rac-lactide; Synthesised; X-ray diffraction studies; Polymerization | English | 2021 | 2021-03-01 | 10.1016/j.poly.2020.115003 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Comparative Study on Estimation Methods of Dynamic Resistance Using Dynamic Cone Penetrometer | Dynamic resistance, which can be used to express strength in the unit of stress and improve the reliability of the dynamic cone penetration test (DCPT), has been estimated by numerous methods. This study aims to compare different dynamic resistance estimation methods by using an instrumented dynamic cone penetrometer (IDCP). DCPTs are conducted using a standard dynamic cone penetrometer (DCP) and IDCP in the laboratory and field. Dynamic responses are obtained from the strain gauges and an accelerometer installed at the cone tip of the IDCP. The test results show that dynamic resistance is more efficient in distinguishing profiles than the dynamic cone penetration index. Among the methods to estimate the dynamic resistance at the cone tip, the force-velocity integration method and force integration method are more related to the conventional dynamic resistance considering the potential energy of the hammer than the force squared integration method. Additionally, the dynamic resistance estimated for a longer time period is more reliable, particularly for small driving rod lengths. Regarding the limitation of the dynamic response from an accelerometer in a previous study, the force-based dynamic resistance estimated for a longer time period can be used as the most reliable approach for further soil strength characterization. | Kim, Sang Yeob; Lee, Jong-Sub; Kim, Dong-Ju; Byun, Yong-Hoon | Univ Illinois, Dept Civil & Environm Engn, 205 North Mathews Ave, Urbana, IL 61801 USA; Korea Univ, Sch Civil Environm & Architectural Engn, 145 Anam Ro, Seoul 02841, South Korea; Kyungpook Natl Univ, Sch Agr Civil & Bioind Engn, 80 Daehak Ro, Daegu 41566, South Korea | Lee, Jong-Sub/G-2752-2012; Byun, Yong-Hoon/JKI-8441-2023 | 57202787920; 55690048400; 7409760881; 42761048000 | s3778@illinois.edu;jongsub@korea.ac.kr;kyrix1028@korea.ac.kr;yhbyun@knu.ac.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 21 | 9 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2021 | 3.847 | 28.9 | 0.96 | 2025-07-30 | 12 | 18 | DCP; dynamic penetration; dynamic resistance; integration method; transferred energy | PENETRATION RESISTANCE; STRENGTH; STIFFNESS; DCP | DCP; Dynamic penetration; Dynamic resistance; Integration method; Transferred energy | Reproducibility of Results; Soil; Accelerometers; Integration; Potential energy; Comparative studies; Dynamic cone penetration indices; Dynamic cone penetration test; Dynamic cone penetrometer; Dynamic resistance; Estimation methods; Force-velocity; Integration method; reproducibility; soil; Dynamic response | English | 2021 | 2021-05 | 10.3390/s21093085 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | D-OLIA: A Hybrid MPTCP Congestion Control Algorithm with Network Delay Estimation | With the recent evolution of mobile technology, modern devices equipped with multiple communication interfaces have become popular. The multipath transmission control protocol (MPTCP) has evolved to facilitate multiple communication interfaces through a single TCP connection for faster Internet access. MPTCP congestion control algorithms (MPTCP-CCAs) control data flow by fulfilling three design goals, i.e., ensuring improvement over single-path flows, ensuring fairness, and balancing congestion. Current MPTCP-CCAs cannot fulfill these design goals. For example, the opportunistic-linked increase algorithm (OLIA), a well-known MPTCP-CCA in load balancing, often results in low throughput because it cannot properly utilize the underlying network. In addition, the current Internet has a rapidly changing characteristic due to a large amount of short-lived traffic, making it difficult for MPTCP-CCAs to cope. An awareness of prevailing network delay conditions might help MPTCP-CCAs to utilize the network capacity fully. Therefore, we propose dynamic OLIA (D-OLIA), a hybrid MPTCP-CCA that enhances the performance of OLIA by integrating an awareness of the current network delay condition for deciding the congestion window (CWND) decrease factor. We estimate the current network delay condition, i.e., less-congested or congested, by observing the changes in the round-trip-time (RTT). Based on the estimated network delay condition, we decide the CWND decrease factor in real-time for reducing the CWND during packet loss events. We implemented D-OLIA in the Linux kernel and experimented using the Mininet emulator. The emulation results demonstrate that D-OLIA successfully estimates current network delay conditions and results in approximately a 20% increased throughput compared to the original OLIA. Compared to certain MPTCP-CCAs, it also yields a highly improved performance in terms of throughput, RTT, packet retransmissions, and fairness among the MPTCP sub-flows. | Lubna, Tabassum; Mahmud, Imtiaz; Kim, Geon-Hwan; Cho, You-Ze | Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu 41566, South Korea | Mahmud, Imtiaz/R-1089-2019 | 57205303733; 56203487900; 57189040274; 7404469829 | lubna@knu.ac.kr;imtiaz@knu.ac.kr;kgh76@ee.knu.ac.kr;yzcho@ee.knu.ac.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 21 | 17 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2021 | 3.847 | 28.9 | 0.59 | 2025-07-30 | 9 | 9 | D-OLIA; MPTCP congestion control algorithm; network condition estimation; network delay estimation | D-OLIA; MPTCP congestion control algorithm; Network condition estimation; Network delay estimation | Computer operating systems; Transmission control protocol; Communication interface; Congestion windows (cwnd); Mobile Technology; Multi-path transmission control protocols; Network delay estimation; Packet retransmissions; Short-lived traffic; Underlying networks; algorithm; article; awareness; controlled study; Internet; internet access; Packet networks | English | 2021 | 2021-09 | 10.3390/s21175764 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Deep Learning-Based Optimal Smart Shoes Sensor Selection for Energy Expenditure and Heart Rate Estimation | Wearable technologies are known to improve our quality of life. Among the various wearable devices, shoes are non-intrusive, lightweight, and can be used for outdoor activities. In this study, we estimated the energy consumption and heart rate in an environment (i.e., running on a treadmill) using smart shoes equipped with triaxial acceleration, triaxial gyroscope, and four-point pressure sensors. The proposed model uses the latest deep learning architecture which does not require any separate preprocessing. Moreover, it is possible to select the optimal sensor using a channel-wise attention mechanism to weigh the sensors depending on their contributions to the estimation of energy expenditure (EE) and heart rate (HR). The performance of the proposed model was evaluated using the root mean squared error (RMSE), mean absolute error (MAE), and coefficient of determination (R2). Moreover, the RMSE was 1.05 & PLUSMN; 0.15, MAE 0.83 & PLUSMN; 0.12 and R2 0.922 & PLUSMN; 0.005 in EE estimation. On the other hand, and RMSE was 7.87 & PLUSMN; 1.12, MAE 6.21 & PLUSMN; 0.86, and R2 0.897 & PLUSMN; 0.017 in HR estimation. In both estimations, the most effective sensor was the z axis of the accelerometer and gyroscope sensors. Through these results, it is demonstrated that the proposed model could contribute to the improvement of the performance of both EE and HR estimations by effectively selecting the optimal sensors during the active movements of participants. | Eom, Heesang; Roh, Jongryun; Hariyani, Yuli Sun; Baek, Suwhan; Lee, Sukho; Kim, Sayup; Park, Cheolsoo | Kwangwoon Univ, Dept Comp Engn, Seoul 01897, South Korea; Korea Inst Ind Technol KITECH, Digital Transformat R&D Dept, 143 Hanggaulro, Ansan 15588, South Korea; Telkom Univ, Sch Appl Sci, Bandung 40257, Indonesia; Kyungpook Natl Univ, Coll Ecol Environm, Dept Leisure Sports, Sangju Si 37224, South Korea | Hariyani, Yuli/AAC-6414-2021 | 57214450792; 57188969066; 57208390475; 57221332098; 57303876500; 35750102100; 35729107400 | 9200heesang@gmail.com;ssaccn@kitech.re.kr;yulisun@telkomuniversity.ac.id;zhsjzhsj@gmail.com;ehduq132@gmail.com;sayub@kitech.re.kr;parkcheolsoo@kw.ac.kr; | SENSORS | SENSORS-BASEL | 1424-8220 | 21 | 21 | SCIE | CHEMISTRY, ANALYTICAL;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION | 2021 | 3.847 | 28.9 | 0.52 | 2025-07-30 | 7 | 9 | smart shoe; energy expenditure; heart rate; channel wise attention; DenseNet; accelerometer; gyroscope; pressure sensor; deep learning | PHYSICAL-ACTIVITY; NETWORK; DENSENET; PEOPLE | Accelerometer; Channel wise attention; Deep learning; DenseNet; Energy expenditure; Gyroscope; Heart rate; Pressure sensor; Smart shoe | Deep Learning; Energy Metabolism; Heart Rate; Humans; Quality of Life; Shoes; Deep learning; Energy utilization; Gyroscopes; Heart; Mean square error; Pressure sensors; Wearable sensors; Channel wise attention; Deep learning; Densenet; Energy expenditure; Heart-rate; Mean absolute error; Optimal sensor; Rate estimation; Root mean squared errors; Smart shoe; energy metabolism; heart rate; human; quality of life; shoe; Accelerometers | English | 2021 | 2021-11 | 10.3390/s21217058 | 바로가기 | 바로가기 | 바로가기 | 바로가기 |
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