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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 | The geometric realization of a normalized set-theoretic Yang-Baxter homology of biquandles | Biracks and biquandles, which are useful for studying the knot theory, are special families of solutions of the set-theoretic Yang-Baxter equation. A homology theory for the set-theoretic Yang-Baxter equation was developed by Carter et al. in order to construct knot invariants. In this paper, we construct a normalized (co)homology theory of a set-theoretic solution of the Yang-Baxter equation. We obtain some concrete examples of nontrivial n-cocycles for Alexander biquandles. For a biquandle X, its geometric realization BX is discussed, which has the potential to build invariants of links and knotted surfaces. In particular, we demonstrate that the second homotopy group of BX is finitely generated if the biquandle X is finite. | Wang, Xiao; Yang, Seung Yeop | Jilin Univ, Dept Math, Changchun 130012, Peoples R China; Kyungpook Natl Univ, Dept Math, Daegu 41566, South Korea | 57192084241; 56589212300 | wangxiaotop@jlu.edu.cn;seungyeop.yang@knu.ac.kr; | JOURNAL OF KNOT THEORY AND ITS RAMIFICATIONS | J KNOT THEOR RAMIF | 0218-2165 | 1793-6527 | 31 | 09 | SCIE | MATHEMATICS | 2022 | 0.5 | 83.2 | 0.75 | 2025-06-25 | 1 | 2 | Set-theoretical solution of Yang-Baxter equation; biquandle; normalized set-theoretic Yang-Baxter homology; biquandle space | INVARIANTS; EQUATION; KNOTS | biquandle; biquandle space; normalized set-theoretic Yang-Baxter homology; Set-theoretical solution of Yang-Baxter equation | English | 2022 | 2022-08 | 10.1142/s0218216522500511 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Twist moves and the affine index polynomials of virtual knots | In this paper, we give a necessary condition for two virtual knots to be related by a finite sequence of twist moves by using the affine index polynomial, which is a Vassiliev invariant of degree 1. Trapp showed that a numerical Vassiliev invariant of degree n has a polynomial growth of degree <= n on a twist sequence of knots, which can be extended to a twist sequence of virtual knots. We calculate the growth of the affine index polynomial for a twist sequence of virtual knots and find the difference of the affine index polynomials of two virtual knots, which are related by a twist move. Moreover, we give a lower bound for the number of twist moves needed to transform K to K ' if K and K ' are virtual knots related by a finite sequence of twist moves. | Jeong, Myeong-Ju; Choi, Younhee; Kim, Dojin | Korea Sci Acad KAIST, Dept Math, 111 Baekyang Gwanmun Ro, Busan 614822, South Korea; Kyungpook Natl Univ, Coll Nat Sci, Dept Math, Daegu 41566, South Korea; Dongguk Univ, Dept Math, Seoul 04620, South Korea | 26661576700; 57863909800; 57206696832 | mjjeong@ksa.kaist.ac.kr;younhee21c@knu.ac.kr;kimdojin@dongguk.edu; | JOURNAL OF KNOT THEORY AND ITS RAMIFICATIONS | J KNOT THEOR RAMIF | 0218-2165 | 1793-6527 | 31 | 07 | SCIE | MATHEMATICS | 2022 | 0.5 | 83.2 | 0.37 | 2025-06-25 | 0 | 1 | Twist move; affine index polynomial; writhe polynomial | VASSILIEV INVARIANTS; LINKS | affine index polynomial; Twist move; writhe polynomial | English | 2022 | 2022-06 | 10.1142/s0218216522500420 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Connectome-based predictive models using resting-state fMRI for studying brain aging | Changes in the brain with age can provide useful information regarding an individual's chronological age. studies have suggested that functional connectomes identified via resting-state functional magnetic resonance imaging (fMRI) could be a powerful feature for predicting an individual's age. We applied connectome-based predictive modeling (CPM) to investigate individual chronological age predictions via resting-state fMRI using open-source datasets. The significant feature for age prediction was confirmed in 168 subjects from the Southwest University Adult Lifespan Dataset. The higher contributing nodes for age production included a positive connection from the left inferior parietal sulcus and a negative connection from the right middle temporal sulcus. On the network scale, the subcortical-cerebellum network was the dominant network for age prediction. The generalizability of CPM, which was constructed using the identified features, was verified by applying this model to independent datasets that were randomly selected from the Autism Brain Imaging Data Exchange I and the Open Access Series of Imaging Studies 3. CPM via resting-state fMRI is a potential robust predictor for determining an individual's chronological age from changes in the brain. | Kim, Eunji; Kim, Seungho; Kim, Yunheung; Cha, Hyunsil; Lee, Hui Joong; Lee, Taekwan; Chang, Yongmin | Korea Inst Radiol & Med Sci, Dept Korea Radioisotope Ctr Pharmaceut, Seoul, South Korea; Kyungpook Natl Univ, Dept Med & Biol Engn, Daegu, South Korea; Kyungpook Natl Univ, Dept Radiol, Sch Med, Daegu, South Korea; Kyungpook Natl Univ Hosp, Dept Radiol, Daegu, South Korea; Korea Brain Res Inst, Chumdanro 61, Daegu 41021, South Korea; Kyungpook Natl Univ, Dept Mol Med & Radiol, Sch Med, 200 Dongduk Ro, Daegu, South Korea | 57215273419; 57218284791; 57828846900; 57189728122; 23485776600; 55501335000; 7501840633 | tklee@kbri.re.kr;ychang@knu.ac.kr; | EXPERIMENTAL BRAIN RESEARCH | EXP BRAIN RES | 0014-4819 | 1432-1106 | 240 | 9 | SCIE | NEUROSCIENCES | 2022 | 2 | 83.3 | 0.79 | 2025-06-25 | 7 | 7 | Prediction model; Resting-state functional magnetic resonance imaging; Functional connectivity; Connectome-based predictive modeling; Feature selection | FUNCTIONAL CONNECTIVITY; AGE-DIFFERENCES; WHITE-MATTER; NETWORK; TRAJECTORIES; DEFAULT; TASK | Connectome-based predictive modeling; Feature selection; Functional connectivity; Prediction model; Resting-state functional magnetic resonance imaging | Adult; Aging; Brain; Connectome; Humans; Magnetic Resonance Imaging; Nerve Net; adolescent; adult; age; age determination; aged; angular gyrus; Article; brain function; cerebellum; child; connectome; controlled study; cuneus; echo planar imaging; external validity; feature selection; female; functional connectivity; functional magnetic resonance imaging; functional neuroimaging; human; internal validity; intraparietal sulcus; k fold cross validation; leave one out cross validation; left hippocampus; major clinical study; male; parietal gyrus; postcentral gyrus; predictive model; subcortex; superior frontal gyrus; superior temporal gyrus; superior temporal sulcus; T1 weighted imaging; T2 weighted imaging; thalamus; aging; brain; diagnostic imaging; nerve cell network; nuclear magnetic resonance imaging; procedures | English | 2022 | 2022-09 | 10.1007/s00221-022-06430-7 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Objective bayesian inference for quantile ratios in normal models | In medical research, it is important to compare quantiles of certain measures obtained from treatment and control groups, with the quantile ratio showing the effect of the treatment. In particular, inference of the quantile ratio based on large sample methods can be studied using a normal model. In this paper, we develop noninformative priors such as probability matching priors and reference priors for quantile ratios in normal models. It has been proved that the one-at-a-time reference prior satisfies a first-order matching criterion, while the Jeffreys' and two-group reference priors do not when the variances are equal. Through simulation study and an example based on real data, we also confirm that the proposed probability matching priors match the target coverage probabilities in a frequentist sense even when the sample size is small. | Kang, Sang Gil; Lee, Woo Dong; Kim, Yongku | Sangji Univ, Dept Comp & Data Inforamt, Wonju, South Korea; Daegu Haany Univ, Cosmet & Pharmaceut, Gyongsan, South Korea; Kyungpook Natl Univ, Dept Stat, Daegu, South Korea | 56119861400; 8328822200; 47962102500 | kim.1252@knu.ac.kr; | COMMUNICATIONS IN STATISTICS-THEORY AND METHODS | COMMUN STAT-THEOR M | 0361-0926 | 1532-415X | 51 | 15 | SCIE | STATISTICS & PROBABILITY | 2022 | 0.8 | 83.6 | 0.36 | 2025-06-25 | 0 | 2 | Bayesian inference; matching prior; normal distribution; quantile; reference prior | FREQUENTIST VALIDITY; PARAMETER; PRIORS | Bayesian inference; matching prior; normal distribution; quantile; reference prior | Bayesian networks; Inference engines; Bayesian inference; Matching criterion; Medical research; Non-informative prior; Probability matching; Reference prior; Simulation studies; Target coverage; Probability | English | 2022 | 2022-06-30 | 10.1080/03610926.2020.1833220 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Effect of the manufacturing process on the equivalency qualification of glass fiber reinforced polymer | Glass Fiber Reinforced Polymer (GFRP) is widely used as aerospace material requiring high specific strength, specific stiffness, and excellent mechanical and chemical properties. To apply the already approved composite materials to other processes, an equivalency test that compares the mechanical properties of the composite materials based on the database is required. For the successful completion of the equivalency test, it is important to control the factors affecting the mechanical properties. The resin content and density of the specimens are manufactured differently according to the process. The effect of these factors on the change of mechanical properties required for equivalency qualification has not been sufficiently reported. In this study, an equivalency test was performed on the GFRP applied to the aircraft radome based on the procedure of the equivalency test and acceptance test proposed by the National Center for Advanced Materials Performance. The causes of problems occurring between equivalency tests were analyzed. It was confirmed that the resin content, density, and voids of the specimen affect the mechanical properties. As the resin content decreases, the density and voids were controlled, and it was confirmed that the average strength and modulus increase by 13.12 and 6.78%, respectively. The equivalency qualification was completed by applying an improved process in which these factors were controlled. | Kim, Dong-Chul; Choi, Jeoung Sik; Shin, Hyo-Soon; Jung, InKyun; Heo, Young Woo | Korea Inst Ceram Engn & Technol, Emerging Mat R Div, Nano Convergence Mat Ctr, Jinju 52851, South Korea; Kyungpook Natl Univ, Shool Mat Sci & Engn, Daegu 702701, South Korea; Korea Aerosp Ind Ltd, Air Vehicle Anal Dept, Sacheon 52529, South Korea | 57226389154; 57478171200; 35273922400; 57969038800; 7004298542 | hshin@kicet.re.kr; | SCIENCE AND ENGINEERING OF COMPOSITE MATERIALS | SCI ENG COMPOS MATER | 0792-1233 | 2191-0359 | 29 | 1 | SCIE | MATERIALS SCIENCE, COMPOSITES | 2022 | 1.9 | 83.9 | 0.23 | 2025-06-25 | 2 | 3 | glass fiber reinforced polymer; equivalency test; resin content; void; mechanical properties | VOID FORMATION; RESIN; GFRP; COMPOSITES; MOISTURE; BEHAVIOR; FLOW | equivalency test; glass fiber reinforced polymer; mechanical properties; resin content; void | Density (specific gravity); Fiber reinforced plastics; Glass fibers; Process control; Resins; Aerospace materials; Composites material; Equivalency test; Glassfiber reinforced polymers (GFRP); High specific strength; Manufacturing process; Material-based; Resin content; Specific stiffness; Void; Acceptance tests | English | 2022 | 2022-11-14 | 10.1515/secm-2022-0164 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Magnetic Force between a Multilayered Solenoid and a Magnet | A solenoid is a coil wound many times on a cylinder of length greater than its diameter. Solenoids are mainly used as electromagnets, because a magnetic field is formed when current flows through a solenoid. The solenoid described in secondary school and university textbooks is a single-layered solenoid. Further, textbooks and papers focusing on education primarily describe the magnetic fields caused by infinite solenoids. However, most solenoids used in laboratory or daily life are finite solenoids with multiple layers to achieve a strong magnetic field. Examples include solenoid valves, Faraday rotators, and modulators. | Ha, Hyejin; Jang, Taehun; Sohn, Sang Ho; Kim, Junghwa | Kyungpook Natl Univ, Sci Educ, Daegu, South Korea; Kyungpook Natl Univ, Daegu, South Korea; Kyungpook Natl Univ, Phys, Daegu, South Korea; Daegu Il Sci High Sch, Daegu, South Korea | 57023054500; 57202406456; 7101646506; 57963567800 | shsohn@knu.ac.kr; | PHYSICS TEACHER | PHYS TEACH | 0031-921X | 1943-4928 | 60 | 8 | SCIE | EDUCATION, SCIENTIFIC DISCIPLINES;PHYSICS, MULTIDISCIPLINARY | 2022 | 0.9 | 84.1 | 0.23 | 2025-06-25 | 2 | 2 | CYLINDRICAL MAGNETS; FIELD | English | 2022 | 2022-11 | 10.1119/5.0053248 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||||
| ○ | ○ | Editorial Material | Measurement of hydraulic coefficients using a Mariotte bottle and a smartphone | Ha, Hyejin; Jang, Taehun; Sohn, Sang Ho | Kyungpook Natl Univ, Daegu 41566, South Korea | 57023054500; 57202406456; 7101646506 | shsohn@knu.ac.kr; | PHYSICS TEACHER | PHYS TEACH | 0031-921X | 1943-4928 | 60 | 7 | SCIE | EDUCATION, SCIENTIFIC DISCIPLINES;PHYSICS, MULTIDISCIPLINARY | 2022 | 0.9 | 84.1 | 0.12 | 2025-06-25 | 1 | 1 | English | 2022 | 2022-10 | 10.1119/5.0095916 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||||||
| ○ | ○ | Editorial Material | Temporal Change of a Parallel Plate Capacitor's Voltage after Dielectric Insertion | Oh, Youngmin; Jang, Taehun; Ha, Hyejin; Sohn, Sangho | Cheongsong High Sch, Gyeongbuk, South Korea; Kyungpook Natl Univ, Daegu, South Korea; Kyungpook Natl Univ, Sci Educ, Daegu, South Korea; Kyungpook Natl Univ, Phys, Daegu, South Korea | 57444070000; 57202406456; 57023054500; 7101646506 | shsohn@knu.ac.kr; | PHYSICS TEACHER | PHYS TEACH | 0031-921X | 1943-4928 | 60 | 2 | SCIE | EDUCATION, SCIENTIFIC DISCIPLINES;PHYSICS, MULTIDISCIPLINARY | 2022 | 0.9 | 84.1 | 0.23 | 2025-06-25 | 2 | 2 | English | 2022 | 2022-02 | 10.1119/10.0009419 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||||||
| ○ | ○ | Article | Combined feedback-feedforward control of Cuk CCM converter for achieving fast transient response | The Cuk converters operating in continuous conduction mode (CCM) can be preferred in applications such as microprocessor power delivery and pulsed load because these circuits have advantages of being able to step up/down, a small number of power components, and low input/output current ripples. However, they show poor transient performance due to right-half-plane-zeros (RHPZs) in the closed-loop transfer function of the Cuk CCM converter. To enhance the transient response, a combined feedback-feedforward control for the Cuk CCM converter is proposed. The proposed control scheme comprises a feedback control signal based on a Lyapunov function and a duty-ratio feedforward control signal. A Lyapunov-function-based controller (LBC) achieves fast dynamic response even under large-signal variations from the operating point. The duty ratio feedforward controller (DFFC) is developed to predict the effect of the disturbances and compensate it, while alleviating the burden of LBC. The proposed control logic makes the closed-loop system of the Cuk CCM converter globally exponentially stable and thus provides a fast transient response even under large-signal variations. To construct the proposed controller, the authors make use of the large-signal averaged model of the Cuk CCM converter, and consider the parasitic elements. To verify the proposed control scheme, numerical simulations and experimental tests are conducted. | Han, Byeongcheol; Wi, Seok-Min; Kim, Minsung | Kyungpook Natl Univ, Sch Elect Engn, Daegu, South Korea; Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu, South Korea; Samsung Elect, Mechatron R&D Ctr, Hwasung, South Korea; Dongguk Univ, Div Elect & Elect Engn, Seoul 04620, South Korea | ; Kim, Minsung/AAT-7092-2021; Han, Byeongcheol/W-7608-2019 | 57188622752; 56348834400; 57201445330 | mkim@dgu.ac.kr; | IET CIRCUITS DEVICES & SYSTEMS | IET CIRC DEVICE SYST | 1751-858X | 1751-8598 | 16 | 1 | SCIE | ENGINEERING, ELECTRICAL & ELECTRONIC | 2022 | 1.3 | 84.2 | 0 | 2025-06-25 | 0 | 0 | Closed loop systems; Controllers; Electric power transmission; Feedforward control; Lyapunov functions; Transient analysis; Closed loop transfer function; Continuous conduction mode; Fast transient response; Feed-forward control signals; Feed-forward controllers; Feedback control signals; Globally exponentially stable; Lyapunov function-based controllers; Feedback | English | 2022 | 2022-01 | 10.1049/cds2.12085 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Review | Mass spectrometry imaging of small molecules from live cells and tissues using nanomaterials | We review recently developed methods for analyzing live cells and tissues in ambient conditions without the use of harsh chemical fixation or physical freezing and drying. The first method is based on laser ablation in atmospheric pressure assisted by atmospheric pressure plasma and nanomaterials such as nanoparticles and graphene to enhance laser ablation. The second method is based on secondary ion mass spectrometry imaging of live cells in solution capped with single-layer graphene to preserve intact and hydrated biological samples even under ultrahigh vacuum for secondary ion mass spectrometry bio-imaging in solution with subcellular spatial resolution. Mass spectrometry imaging of small molecules from live cells and tissues can provide an innovative molecular imaging methodology for several biomedical and material research applications. | Kim, Jae Young; Lim, Heejin; Moon, Dae Won | Kyungpook Natl Univ, Coll IT Engn, Sch Elect & Elect Engn, Daegu Campus, Daegu, South Korea; Daegu Gyeongbuk Inst Sci & Technol DGIST, Dept New Biol, Daegu 42988, South Korea; Daegu Gyeongbuk Inst Sci & Technol DGIST, Sch Undergrad Studies, Daegu, South Korea | 57205191453; 57200994073; 16433239500 | dwmoon@dgist.ac.kr; | SURFACE AND INTERFACE ANALYSIS | SURF INTERFACE ANAL | 0142-2421 | 1096-9918 | 54 | 4 | SCIE | CHEMISTRY, PHYSICAL | 2022 | 1.7 | 84.2 | 0.05 | 2025-06-25 | 2 | 2 | ambient mass spectrometry imaging; live cells and tissues; nanomaterials; secondary ion mass spectrometry | DESORPTION | ambient mass spectrometry imaging; live cells and tissues; nanomaterials; secondary ion mass spectrometry | Atmospheric chemistry; Atmospheric pressure; Cells; Chemical analysis; Cytology; Graphene; Histology; Laser ablation; Molecular imaging; Molecules; Nanostructured materials; Secondary emission; Secondary ion mass spectrometry; Tissue; Ambient conditions; Ambient mass spectrometries; Ambient mass spectrometry imaging; Chemical fixation; Lasers ablations; Live cell; Live tissue; Mass-spectrometry imaging; Secondary ion-mass spectrometry; Small molecules; Ions | English | 2022 | 2022-04 | 10.1002/sia.7070 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Activation of Complement System in Henoch-Schonlein Purpura Nephritis | Introduction: We studied the association between Henoch-Schonlein purpura nephritis (HSPN) and complement system activation. Methods: We retrospectively reviewed the pathologic findings and medical records of 35 children and 12 adults with HSPN and compared the differences according to C4d positivity in three groups consisting of total 47 patients, 35 pediatric and 12 adult patients, respectively. C4d staining of renal biopsy was additionally performed at the time of diagnosis or retrospectively using archival biopsy material. Results: The overall rate of C4d positivity was 53.2%: 20 (57.1%) of the 35 children and five (41.7%) of the 12 adults. Among the groups there was no significant difference in the severity of proteinuria, renal function, presence of crescents or mesangial proliferation stratified by C4d positivity, unlike IgA nephropathy. Conclusions: We suggest that the activation of complement system is not correlated with the clinical or pathological severity of HSPN. | Jang, Hea Min; Baek, Heesun; Han, Man Hoon; Kim, Yong Jin; Kim, Chan-Duck; Kim, Yong-Lim; Park, Sun-Hee; Cho, Min Hyun | Kyungpook Natl Univ, Sch Med, Dept Pediat, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Dept Pathol, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Dept Internal Med, Daegu, South Korea | Kim, Yong-Jin/J-2745-2012; Kim, Yong-Lim/AGK-3172-2022 | 57216601178; 56689379700; 57194067936; 56150365500; 8558530700; 55633533600; 7501831741; 7401727726 | chomh@knu.ac.kr; | FETAL AND PEDIATRIC PATHOLOGY | FETAL PEDIATR PATHOL | 1551-3815 | 1551-3823 | 41 | 1 | SCIE | PATHOLOGY;PEDIATRICS | 2022 | 1.1 | 84.9 | 0.79 | 2025-06-25 | 6 | 5 | Henoch-Schonlein purpura nephritis; children; complement system; C4d; IgA nephropathy | C4D DEPOSITION; LECTIN PATHWAY | C4d; children; complement system; Henoch-Schönlein purpura nephritis; IgA nephropathy | Adult; Child; Glomerulonephritis, IGA; Humans; IgA Vasculitis; Nephritis; Proteinuria; Retrospective Studies; complement component C3; complement component C4; complement component C4d; creatinine; adult; age; anaphylactoid purpura; Article; cell proliferation; child; clinical article; complement activation; creatinine blood level; disease severity; estimated glomerular filtration rate; female; hematuria; histopathology; human; human tissue; immunoglobulin A nephropathy; immunohistochemistry; kidney biopsy; kidney function; male; mesangium cell; middle aged; pathogenesis; protein creatinine ratio; proteinuria; retrospective study; sex; sex ratio; immunoglobulin A nephropathy; nephritis | English | 2022 | 2022-02-07 | 10.1080/15513815.2020.1761914 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Application of Shadow Matching Technique to Improve Smartphone-based Global Navigation Satellite System Positioning Accuracy | In this study, the smartphone global navigation satellite system (GNSS) positioning accuracy was improved by selecting optimal visible satellites through a 3D surface model and the shadow matching (SM) technique. A 3D surface model was constructed using an unmanned aerial vehicle (UAV) to obtain an accurate terrain model and perform visibility analysis. Additionally, we used the geographic information system (GIS) analysis as well as the skyline and barrier analysis methods to calculate the visibility between smartphones and satellites. The altitudes of the satellites were calculated to analyze the visibility between the analyzed smartphone and the satellites, and the visible satellites were selected by a sky mask method. Visible satellites were classified through the analysis of the signal characteristics by investigating the observed elevation angle of the satellite signal, the carrier-to-noise ratio (C/No), and the pseudorange ratio consistency (Prc). Moreover, the satellites were categorized via two classification methods and then recombined by statistical analysis to optimally select the visible satellites. Furthermore, the smartphone's location was computed using the optimal combination of satellites, and the accuracy was evaluated by comparing the calculated location coordinates with the true position coordinates. As a result, the maximum rates of improvement were 880, 356, and 5% in environments of low-rise building urban, high-rise building urban, and surrounded by tall buildings, respectively. | Kim, Dokyun; Jang, Mingyun; Lee, Kirim; Lee, Wonhee | Gyeongbuk Prov Univ, Dept Civil Engn, Yecheon 36830, South Korea; Kyungpook Natl Univ, Sch Convergence & Fus Syst Engn, Sangju 37224, South Korea; Kyungpook Natl Univ, Dept Spatial Informat, Daegu 41566, South Korea | 57452216400; 57452370900; 57193932338; 57190774365 | wlee33@knu.ac.kr; | SENSORS AND MATERIALS | SENSOR MATER | 0914-4935 | 34 | 1 | SCIE | INSTRUMENTS & INSTRUMENTATION;MATERIALS SCIENCE, MULTIDISCIPLINARY | 2022 | 1.2 | 84.9 | 0.08 | 2025-06-25 | 1 | 1 | GNSS; shadow matching; 3D surface model; GIS; sky mask method; skyline analysis; barrier analysis | GNSS; MODEL | 3D surface model; Barrier analysis; GIS; GNSS; Shadow matching; Sky mask method; Skyline analysis | 3D modeling; Antennas; Geographic information systems; Satellites; Smartphones; Tall buildings; Three dimensional computer graphics; Unmanned aerial vehicles (UAV); Visibility; 3D surface models; Barrier analyse; Global Navigation Satellite Systems; MASK method; Matching techniques; Matchings; Shadow matching; Sky mask method; Skyline analysis; Smart phones; Global positioning system | English | 2022 | 2022 | 10.18494/sam3714 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Comparative Evaluation of Tracking Capability of Spatial Patterns on Defective Urban Solar Panels between Unmanned Aerial Vehicle Video Stream and Photomosaics | Unmanned aerial vehicle (UAV) autopilot flight requires a specific altitude when inspecting defective urban solar panels to avoid obstacles such as high-rise buildings, trees, and telegraph poles. Therefore, autopilot-based thermal imaging has severe data redundancy because the non -solar panel area occupies more than 99% of the ground target. We aim to explore the tracking capability of a UAV video stream for defective urban solar panels by comparing spatial and clustering patterns with autopilot-based photomosaics. The spatial patterns of distributions and clusters in defective solar panels have high similarity (80-100%) to those of autopilot-based photomosaics. The results of this study can serve as a valuable reference for video-stream-based thermal deficiency inspections of defective solar panels in urban areas. | Hwang, Young-Seok; Um, Jung-Sup; Kim, Jun-Hyun | Korea Environm Inst, Sicheong daero 370, Sejong 30147, South Korea; Kyungpook Natl Univ, Dept Geog, Univ Rd 80, Daegu 41566, South Korea | Kim, Jonghwan/AAR-2815-2021; Um, Jung-Sup/F-5351-2018 | 57218585482; 35173565000; 57201192219 | kamcho78@knu.ac.kr; | SENSORS AND MATERIALS | SENSOR MATER | 0914-4935 | 34 | 12 | SCIE | INSTRUMENTS & INSTRUMENTATION;MATERIALS SCIENCE, MULTIDISCIPLINARY | 2022 | 1.2 | 84.9 | 0.08 | 2025-06-25 | 1 | 1 | unmanned aerial vehicle (UAV); video; solar panel; photomosaic; thermal deficiency; hot spots; clustering | UAV VIDEO; SIGNATURES; CO2 | clustering; hot spots; photomosaic; solar panel; thermal deficiency; unmanned aerial vehicle (UAV); video | Air navigation; Aircraft detection; Antennas; Defects; Infrared imaging; Solar concentrators; Solar panels; Tall buildings; Video streaming; Aerial vehicle; Clusterings; Hotspots; Photomosaic; Solar panels; Thermal; Thermal deficiency; Tracking capability; Unmanned aerial vehicle; Video; Unmanned aerial vehicles (UAV) | English | 2022 | 2022 | 10.18494/sam3999 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Factors associated with prolonged viral detection in asymptomatic and mildly symptomatic patients with SARS-CoV-2 infection | Introduction: Data on the clinical course and duration of viral RNA detection in patients with mild or asymptomatic coronavirus disease 2019 are limited. Methodology: In this retrospective analysis, clinical characteristics and serial real-time reverse transcriptase-polymerase chain reaction (RTPCR) results were reviewed in a cohort of 1186 asymptomatic and mildly symptomatic coronavirus disease 2019 patients in South Korea. Factors associated with prolonged duration of RT-PCR positivity for severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2) were also evaluated. Patients with two consecutive negative RT-PCR tests >= 24 hours apart were considered to be in virologic remission and discharged. Results: The average virologic remission period, defined as the number of days from diagnosis to virologic remission, was 22.0 +/- 9.7 days; patients with longer than 30 days accounted for 21.2% (251/1186) of the population. Patients who took longer than 30 days to achieve virologic remission had a higher frequency of overall symptoms (p < 0.001) and respiratory symptoms (p < 0.001). In multivariate analysis using Coxproportional hazard regression, it was confirmed that respiratory symptoms (hazard ratio [HR], 0.7372; 95% confidence interval [CI], 0.65400.8311) and gastrointestinal symptoms (HR, 0.8213; 95% CI, 0.6970-0.9679) were independent factors associated with prolonged virologic remission. Age and co-morbidity such as diabetes and hypertension were not associated with the prolonged RT-PCR positivity. Conclusions: A considerable percentage of asymptomatic and mildly symptomatic patients with coronavirus disease 2019 showed prolonged RT-PCR positivity for SARS-CoV-2; which was independently associated with the presence of symptoms, but not with age and co-morbidity. | Lee, Yong Hoon; Hong, Chae Moon; Lee, Taek Hoo; Hwang, Yoon Jin; Kim, Dae Hyun; Lee, Jaetae | Kyungpook Natl Univ, Sch Med, Dept Internal Med, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Dept Nucl Med, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Dept Obstet & Gynecol, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Dept Surg, Daegu, South Korea; Keimyung Univ, Dept Family Med, Dongsan Med Ctr, Daegu, South Korea | Lee, Sang-Jun/A-3892-2015 | 57199022948; 37050876700; 56122334300; 7402310967; 57203012896; 7601451907 | jaetae@knu.ac.kr; | JOURNAL OF INFECTION IN DEVELOPING COUNTRIES | J INFECT DEV COUNTR | 1972-2680 | 16 | 2 | SCIE | INFECTIOUS DISEASES | 2022 | 1.9 | 84.9 | 0.59 | 2025-06-25 | 5 | 5 | SARS-CoV-2; COVID-19; Community Treatment Center; RT-PCR; Symptoms; Comorbidity | COMMUNITY TREATMENT CENTERS; CORONAVIRUS DISEASE; COVID-19 PATIENTS; SPECIMENS | Community Treatment Center; Comorbidity; COVID-19; RT-PCR; SARS-CoV-2; Symptoms | Cohort Studies; COVID-19; Humans; Retrospective Studies; RNA, Viral; SARS-CoV-2; antipyretic agent; virus RNA; adult; alertness; Article; asymptomatic disease; conservative treatment; constipation; coronavirus disease 2019; coughing; diabetes mellitus; diarrhea; dyslipidemia; dyspepsia; dyspnea; female; gastrointestinal symptom; headache; human; hypertension; major clinical study; male; middle aged; nasopharyngeal swab; real time reverse transcription polymerase chain reaction; respiratory tract infection; retrospective study; rhinorrhea; sore throat; thorax radiography; virus detection; cohort analysis; diagnosis; genetics | English | 2022 | 2022-02 | 10.3855/jidc.15072 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Forest Burn Severity Mapping Using Multispectral Unmanned Aerial Vehicle Images and Light Detection and Ranging (LiDAR) Data: Comparison of Maximum Likelihood, Spectral Angle Mapper, and U-Net Classifiers | The automated mapping of forest burn severity using remote sensing imagery has been popular over the last decade. However, there is a lack of studies examining the performance of a range of classifiers for forest burn severity mapping for different burn severity classes. In this study, the performance of three supervised classifiers, maximum likelihood (ML), spectral angle mapper (SAM), and deep learning (U-Net), was evaluated for mapping forest burn severity under different burn severity class settings (two-level burn severity classes: burned and unburned; four-level burn severity classes: crown fire, heat-damaged, ground fire, and unburned). Multispectral unmanned aerial vehicle (UAV) images and light detection and ranging (LiDAR) points obtained from forest fire areas of Andong in South Korea were used to evaluate burn severity. The results show that all classifiers were capable of mapping the two-level burn severity with high overall accuracy (OA) (SAM: OA = 92.05%, kappa coefficient (K) = 0.84; U-Net: OA = 91.83%, K = 0.83; ML: OA = 90.92%, K = 0.82). For four-level burn severity mapping, U-Net (OA = 79.23%, K = 0.64) outperformed the conventional classifiers of SAM (OA = 50.61%, K = 0.38) and ML (OA = 46.85%, K = 0.34). Regarding class separability, SAM and U-Net showed good performance in detecting the severe burn severity class (crown fire areas), whereas a high rate of misclassification occurred in identifying the moderate burn severity classes (heat-damaged, ground fire) for all classifiers. In particular, ML and SAM showed a low capability in identifying unburned areas, while U-Net showed the lowest capability in mapping heat-damaged and ground fire areas. Overall, our study demonstrated that the reliable mapping of burn severity for Korea's forest fires largely depends on the number of levels of burn severity classes as well as the classifier's capability in discriminating moderate burn severity classes. | Lee, Boknam; Kim, Bomi; Woo, Choongshik; Jung, Geonhwi; Kwon, Gyeongwon; Park, Joowon | Kyungpook Natl Univ, Human Resources Dev Ctr Big Data Based Glocal Fore, Daegu 41566, South Korea; Chungnam Forest Environm Res Inst, Sejong 30085, South Korea; Natl Inst Forest Sci, Div Forest Disaster Management, Seoul 02455, South Korea; Kyungpook Natl Univ, Dept Forestry, Daegu 41566, South Korea | 58043441900; 57219031676; 55767522300; 57219031456; 58043226700; 55791550500 | joowon72@knu.ac.kr; | SENSORS AND MATERIALS | SENSOR MATER | 0914-4935 | 34 | 12 | SCIE | INSTRUMENTS & INSTRUMENTATION;MATERIALS SCIENCE, MULTIDISCIPLINARY | 2022 | 1.2 | 84.9 | 0.08 | 2025-06-25 | 1 | 1 | forest burn severity mapping; carbon emission; maximum likelihood; spectral angle mapper; U-Net | FIRE SEVERITY; CLASSIFICATION; AREA; SEGMENTATION; INTENSITY; ALGORITHM; INDEXES; RATIO | carbon emission; forest burn severity mapping; maximum likelihood; spectral angle mapper; U-Net | Aircraft detection; Antennas; Carbon; Deep learning; Fire hazards; Fires; Maximum likelihood; Optical radar; Photomapping; Remote sensing; Unmanned aerial vehicles (UAV); Burn Severity; Carbon emissions; Fire areas; Forest burn severity mapping; Ma ximum likelihoods; Maximum-likelihood; Overall accuracies; Performance; Spectral angle mappers; U-net; Deforestation | English | 2022 | 2022 | 10.18494/sam4159 | 바로가기 | 바로가기 | 바로가기 | 바로가기 |
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