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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 | Emergence and evolution of novel G2b-like porcine epidemic diarrhea virus inter-subgroup G1b recombinants | Porcine epidemic diarrhea virus (PEDV) is a fatal epizootic swine coronavirus that presents a financial threat to the global swine industry. Since the discovery of the low-pathogenic genotype 1b (G1b) in 2014, it has been responsible for sporadic outbreaks in South Korea. In this study, we identified novel G1b variants arising from the natural recombination of a major pandemic-like G2b virus and a minor G1b virus currently circulating in the domestic field. The whole-genome sequences of two 2018-19 G1b recombinants, KNU-1808 and KNU-1909, were determined. A genomic comparison showed that these two viruses share the highest nucleotide sequence similarity with the 2017 G1b strain but share less similarity with the 2014 G1b emergent strain KNU-1406. However, the putative recombination breakpoints spanning the first 1,170 nucleotides of the spike (S) gene were almost identical among the emergent and contemporary G1b strains. Recombination detection indicated that the inter-subgroup G1b recombinant first emerged in 2017 by introducing the N-terminal domain of S from KNU-1406 into the backbone of KNU-1703, possibly leading to antigenic shift. It then evolved into KNU-1808 and KNU-1909 through genetic drift, moving toward a more G2b-like genotype. Phylogenetic analysis revealed that the 2018-2019 G1b recombinants belong to a cluster containing other G1b strains but form a new branch. This study provides an important advance warning in regard to the emergence and prevalence of new genotypes or variants that can result from genetic recombination between two different PEDV genotypes circulating in endemic areas and continuous non-lethal mutations essential for viral fitness in the host environment. | Park, Jonghyun; Lee, Changhee | Kyungpook Natl Univ, Coll Nat Sci, BK21 Plus KNU Creat BioRes Grp, Anim Virol Lab,Sch Life Sci, Daegu 41566, South Korea | 57210160562; 55700560700 | changhee@knu.ac.kr; | ARCHIVES OF VIROLOGY | ARCH VIROL | 0304-8608 | 1432-8798 | 165 | 11 | SCIE | VIROLOGY | 2020 | 2.574 | 68.9 | 0.51 | 2025-06-25 | 17 | 16 | SEQUENCE | Animals; Coronavirus Infections; Disease Outbreaks; Evolution, Molecular; Genetic Variation; Genome, Viral; Genotype; Phylogeny; Porcine epidemic diarrhea virus; Recombination, Genetic; Republic of Korea; Spike Glycoprotein, Coronavirus; Swine; Swine Diseases; Whole Genome Sequencing; coronavirus spike glycoprotein; animal; classification; Coronavirus infection; epidemic; genetic recombination; genetic variation; genetics; genotype; molecular evolution; pathogenicity; phylogeny; pig; Porcine epidemic diarrhea virus; South Korea; swine disease; veterinary medicine; virology; virus genome; whole genome sequencing | English | 2020 | 2020-11 | 10.1007/s00705-020-04767-4 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Genomic characterization of classical swine fever virus LOM variants with 3′-UTR INDELs from pigs on Jeju Island, South Korea | Classical swine fever virus (CSFV) reemerged in naive pig herds on Jeju Island, South Korea, due to the accidental introduction of the LOM vaccine strain in 2014. Since this reemergence, the previously CSFV-free region has experienced numerous outbreaks, causing the virus to become endemic in provincial herds. In this study, we determined the complete genome sequences and investigated the molecular characteristics of LOM-derived field CSFV strains with unique insertion-deletion (INDEL) mutations in the 3 '-untranslated region (UTR) that were responsible for ongoing sporadic outbreaks on Jeju Island in 2019. The Jeju LOM-derived variants that emerged in 2019 had their own INDEL signatures in the 3 '-UTR, resulting in changes to the predicted secondary stem-loop structures. The genomes of these strains were 12,297-12,302 nucleotides in length, one nucleotide (nt) shorter or one, two, or four nt longer than the reference LOM strain. The 3 '-UTR INDEL variants shared 98.8-99.0% and 98.3-98.6% identity with the LOM strain at the polyprotein and full-genome level, respectively. The total number of genetic variations between the LOM vaccine strain and the 3 '-UTR INDEL isolates ranged from 161 to 202 and 37 to 45 at the nucleotide and amino acid level, respectively. These mutations were broadly dispersed throughout the genome and particularly clustered in NS2 and the 3 '-UTR, possibly triggering a reversion to low virulence and allowing the virus to adapt to improve its persistence in the field. This study provides important information about the genetic evolution of LOM-derived CSFV circulating in the free region, and suggests that it arose from continuous non-lethal mutations to ensure viral fitness in host animals. | Jang, Guehwan; Kim, Joo-Ah; Yoo, Hyekyung; Yang, Kyungsu; Yang, Hyoung-Seok; Park, Changnam; Jeong, Kyongju; Park, Choi-Kyu; Lyoo, Young S.; Lee, Changhee | Kyungpook Natl Univ, Coll Nat Sci, Sch Life Sci, BK21 Plus KNU Creat BioRes Grp,Anim Virol Lab, Daegu 41566, South Korea; Anim Hlth Div, Jeju 63122, Jeju Special Se, South Korea; Farm & Pharm Vet Hosp, Jeju 63029, South Korea; Vet Res Inst, Jeju 63344, Jeju Special Se, South Korea; Kyungpook Natl Univ, Coll Vet Med, Daegu 41566, South Korea; Konkuk Univ, Coll Vet Med, Seoul 05029, South Korea | 56608747100; 57205599443; 57208907611; 57216744385; 43762119800; 57205596067; 57205598439; 24768064900; 35501431200; 55700560700 | changhee@knu.ac.kr; | ARCHIVES OF VIROLOGY | ARCH VIROL | 0304-8608 | 1432-8798 | 165 | 7 | SCIE | VIROLOGY | 2020 | 2.574 | 68.9 | 0.36 | 2025-06-25 | 8 | 9 | STRAIN; SEQUENCE | 3' Untranslated Regions; Animals; Classical Swine Fever; Classical Swine Fever Virus; Genome, Viral; Genomics; INDEL Mutation; Islands; Phylogeny; Swine; 3' untranslated region; animal; classical swine fever; Classical swine fever virus; classification; genetics; genomics; indel mutation; island (geological); isolation and purification; phylogeny; pig; virology; virus genome | English | 2020 | 2020-07 | 10.1007/s00705-020-04651-1 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Novel lineage 1 recombinants of porcine reproductive and respiratory syndrome virus isolated from vaccinated herds: genome sequences and cytokine production profiles | Porcine reproductive and respiratory syndrome virus (PRRSV) is a widely disseminated, macrophage-tropic arterivirus that exhibits profound genetic and pathogenic heterogeneity. The present study was conducted to determine the complete genome sequences of two novel Korean lineage 1 PRRSV-2 strains, KNU-1901 and KNU-1902, which were isolated from vaccinated pig farms experiencing unusually high morbidity and mortality. Both isolates contained notable discontinuous 423-nucleotide deletions (DELs) within the genes encoding nonstructural protein 2 (nsp2) and GP3 when compared with the prototype strain VR-2332. In particular, the nsp2 DEL viruses had unique quadripartite discontinuous DEL signatures (111-1-19-9) in nsp2; this is an expanded version of the tripartite 111-1-19 DEL previously identified in virulent lineage 1 PRRSV-2 strains. Phylogenetic analysis revealed that both novel nsp2 DEL viruses belong to the Korean clade (KOR C) of lineage 1 isolates based on ORF5 but cluster with lineage KOR A strains based on the nsp2 or complete genome sequence. Recombination detection analysis suggested that both novel isolates are recombinants and may have evolved via natural inter-lineage recombination between circulating KOR A and KOR C strains. Interestingly, compared with the prototype VR-2332 virus, the novel nsp2 DEL variants were less efficient at promoting the expression of immune response genes in porcine alveolar macrophage culture. Taken together, we conclude that KNU-1901 and KNU-1902 are recently evolved recombinant variants of the virulent lineage 1 family that caused the regional severe PRRS outbreaks. | Park, Jonghyun; Choi, Subin; Jeon, Ji Hyun; Lee, Kyung-Won; Lee, Changhee | Kyungpook Natl Univ, Anim Virol Lab, Sch Life Sci, Coll Nat Sci,BK21 Plus KNU Creat BioRes Grp, Daegu 41566, South Korea; Smart Pig Clin, Cheonan 31008, South Korea | 57210160562; 57212113962; 57189574512; 56255326100; 55700560700 | changhee@knu.ac.kr; | ARCHIVES OF VIROLOGY | ARCH VIROL | 0304-8608 | 1432-8798 | 165 | 10 | SCIE | VIROLOGY | 2020 | 2.574 | 68.9 | 0.51 | 2025-06-25 | 14 | 14 | GENETIC-RECOMBINATION; NSP2; REPLICATION; DELETION; PROTEIN; EXPRESSION; STRAINS; SUSCEPTIBILITY; IDENTIFICATION; PATHOGENESIS | Amino Acid Sequence; Animals; Base Sequence; Cell Line, Transformed; Cytokines; Evolution, Molecular; Gene Expression; Genome, Viral; Macrophages, Alveolar; Open Reading Frames; Phylogeny; Porcine Reproductive and Respiratory Syndrome; Porcine respiratory and reproductive syndrome virus; Recombination, Genetic; Republic of Korea; Sequence Alignment; Sequence Homology, Amino Acid; Swine; Viral Nonstructural Proteins; Virulence; cytokine; viral protein; amino acid sequence; animal; classification; gene expression; genetic recombination; genetics; immunology; isolation and purification; lung alveolus macrophage; molecular evolution; nucleotide sequence; open reading frame; pathogenicity; pathology; phylogeny; pig; porcine reproductive and respiratory syndrome; Porcine reproductive and respiratory syndrome virus; sequence alignment; sequence homology; South Korea; transformed cell line; virology; virulence; virus genome | English | 2020 | 2020-10 | 10.1007/s00705-020-04743-y | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Chronological changes in quality of life and body composition after gastrectomy for locally advanced gastric cancer | Purpose: We evaluated the changes in body composition (BC) and quality of life (QoL) in patients who underwent gastrectomy for advanced gastric cancer. Methods: BC data using segmental multifrequency bioelectrical impedance analysis and QoL data from the EORTC (European Organisation for the Research and Treatment of Cancer) gathered via QLQ-C30 and QLQ-ST022 questionnaires were obtained from 300 patients preoperatively and at 1, 2, and 3 years after surgery. In total, 114 patients underwent total gastrectomy (TO group) and 186 underwent distal gastrectomy (DO group). Results: According to BC analysis, at 3 years postoperatively, the average body weight (P = 0.0021, protein mass (P = 0.0281, body fat mass (P = 0.009), skeletal muscle mass (P = 0.037), and visceral fat area (P = 0.012) was significantly decreased in the TG group than in the DG group compared to the preoperative. In the QLQ-C30, physical functioning (P = 0.001), role functioning (P = 0.0131, and fatigue (P = 0.0051 showed significantly worse QoL in the TG group than in the DO group at 2 and 3 years postoperatively. In the QLQ-ST022, pain (P = 0.0011, reflux symptoms (P = 0.0091, eating restrictions (P = 0.0011, anxiety (P = 0.008), taste (P = 0.011), and body image (P = 0,014) showed greater continuous deterioration postoperatively in the TG group than in the DG group. Conclusion: Persistent deterioration of BC and QoL is a serious concern following total gastrectomy. Long-term management of BC is required after gastrectomy and efforts should be made to improve the QoL in patients as soon as possible, postoperatively. | Park, Ki Bum; Park, Jeong Yoon; Lee, Seung Soo; Chung, Ho Young; Kwon, Oh Kyoung | Kyungpook Natl Univ, Gastr Canc Ctr, Chilgok Hosp, 807 Hoguk Ro, Daegu 41404, South Korea; Kyungpook Natl Univ, Sch Med, Dept Surg, Daegu, South Korea; Kyungpook Natl Univ Hosp, Dept Surg, Daegu, South Korea | ; Park, Ji Yeon/AAV-2471-2020 | 57220965452; 57196405216; 54400392100; 56008255800; 26536109900 | quack72@naver.com; | ANNALS OF SURGICAL TREATMENT AND RESEARCH | ANN SURG TREAT RES | 2288-6575 | 2288-6796 | 98 | 5 | SCIE | SURGERY | 2020 | 1.859 | 69.0 | 1.04 | 2025-06-25 | 11 | 10 | Body composition; Gastrectomy; Quality of life; Stomach neoplasms | OPEN DISTAL GASTRECTOMY | Body composition; Gastrectomy; Quality of life; Stomach neoplasms | English | 2020 | 2020-05 | 10.4174/astr.2020.98.5.262 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | Article | Data-Driven Approach for the Rapid Simulation of Urban Flood Prediction | Flooding due to the increase of heavy rainfall caused even larger damage in metropolitan areas. Therefore, numerical simulation and probabilistic models have been used for flood prediction, but the methodologies for real-time flood prediction by drainage district in metropolitan areas are still not sufficient. In this study, a flood scenario database was established by using one- and two-dimensional hydraulic analysis models to propose a realtime urban flood prediction method by drainage districts in metropolitan areas. Flood prediction models were constructed for each drainage district through the Nonlinear Auto-Regressive with eXogenous inputs and Self-Organizing Map (NARX-SOM). Suggested prediction model is a data-driven model because it is based on flood database which composed with diverse flood simulation results. To evaluate the predictive capacity of the models, flood prediction was performed for the actual heavy rainfall in 2010 and 2011 that caused severe flooding in Seoul, Republic of Korea. Flood prediction models for a total of 24 drainage districts were constructed, and it was found that the goodness of fit on the flood area ranged from 68.7 to 89.7%. In terms of the expected inundation map, the predictive power was found to be high when the SOM result with 5 × 5 dimension was mainly used. Through this study, it was possible to identify the predictive capability of the NARX-SOM flood prediction algorithm. The time for inundation map prediction for each area was within two minutes, but the one- and two-dimensional flood simulation usually takes 60–80 minutes. Moreover, when the calculated goodness of fit was examined, the proposed method was found to be a practical methodology that can be helpful in improving flood response capabilities. © 2020, Korean Society of Civil Engineers. | Kim, Hyun Il; Han, Kun Yeun | Member, Dept. of Civil Engineering, Kyungpook National University, Daegu, 41566, South Korea; Member, Dept. of Civil Engineering, Kyungpook National University, Daegu, 41566, South Korea | 57205686299; 7402963477 | kshanj@knu.ac.kr; | KSCE Journal of Civil Engineering | KSCE J CIV ENG | 1226-7988 | 1976-3808 | 24 | 6 | SCIE | ENGINEERING, CIVIL | 2020 | 1.805 | 69.0 | 0.83 | 2025-06-25 | 19 | Data-driven Model; Drainage system; Flood prediction system; Hydraulic analysis; Machine learning; One- and two-dimensional; Urban flood | Conformal mapping; Forecasting; Rain; Self organizing maps; Data-driven approach; Data-driven model; Drainage districts; Hydraulic analysis models; Metropolitan area; Predictive capabilities; Predictive capacity; Probabilistic models; Floods | English | Final | 2020 | 10.1007/s12205-020-1304-7 | 바로가기 | 바로가기 | 바로가기 | |||||||
| ○ | ○ | Article | Duration Estimate at Completion: Improving Earned Value Management Forecasting Accuracy | Earned Value Management (EVM) has been established as a project management technique for project monitoring and control. The traditional EVM performs well in forecasting Cost Performance index and other cost metrics. However, in terms of schedule performance, the accuracy of the forecasted schedule metrics through the traditional EVM approach are always questionable. The schedule performance is not measured in time unit but rather in monetary units or uses cost information, which may cause misleading in the interpretation of the EVM schedule metrics. The schedule performance is not accurately forecasted, resulting in underestimating the estimate at completion (t). Even the renowned Earned Schedule also uses cost as a proxy to determine the earned schedule. This paper presents a new EVM tool, Duration estimate at completion (DEAC-model) developed to accurately forecast the time estimate at completion. DEAC-model uses the actual time spent on each activity, either in progress or upon completion, where the Performance is measured in time units. The benefits of DEAC-model to project management team and researchers are that it can be used: 1) to forecast schedule metrics accurately so that resources can be effectively allocated to complete the remaining activities, 2) as a gauge to assess if the project can be completed within the plan schedule, and 3) to apply time series and simple linear regression model concepts using excel worksheet syntax to forecast duration estimate at completion that is easily applicable. | Sackey, Solomon; Lee, Dong-Eun; Kim, Byung-Soo | Kyungpook Natl Univ, Dept Civil Engn, Daegu 41566, South Korea; Kyungpook Natl Univ, Dept Architectural Engn, Daegu 41566, South Korea | ; Sackey, Solomon/F-4906-2019; SACKEY, Ph.D., A.M.ASCE, SOLOMON/F-4906-2019 | 57202849575; 56605563300; 57013677400 | bskim65@knu.ac.kr; | KSCE JOURNAL OF CIVIL ENGINEERING | KSCE J CIV ENG | 1226-7988 | 1976-3808 | 24 | 3 | SCIE | ENGINEERING, CIVIL | 2020 | 1.805 | 69.0 | 0.6 | 2025-06-25 | 17 | 17 | Earned value management; Forecasting; Performance measurement; Project duration; Earned schedule | Earned schedule; Earned value management; Forecasting; Performance measurement; Project duration | Budget control; Forecasting; Human resource management; Project management; Regression analysis; Cost performance index; Earned schedules; Earned value management; Estimate at completions; Performance measurements; Project duration; Project monitoring and control; Simple linear regression; Value engineering | English | 2020 | 2020-03 | 10.1007/s12205-020-0407-5 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Flood Hazard Rating Prediction for Urban Areas Using Random Forest and LSTM | A flood hazard rating prediction model was developed that is based on a long short-term memory (LSTM) neural network and random forest. The target area was Samseong District in Seoul, which has a history of severe flooding. The Storm Water Management Model was used to generate training data for the LSTM model to predict the total overflow as the rainfall input data. Two-dimensional numerical analysis was performed to calculate inundation and flow velocity maps for training the random forest, which was used to generate a map of the predicted flood hazard rating of grid units given the total accumulative overflow of the target area. To confirm the goodness of fit, the proposed model was used to predict a flood hazard rating map for a rainfall event observed on July 27, 2011. The prediction accuracy for the flood hazard rating of each grid was 99.86% when the debris factor was considered and 99.99% when the debris factor was not considered. | Kim, Hyun Il; Kim, Byung Hyun | Nakdong River Flood Control Off, Busan 49300, South Korea; Kyungpook Natl Univ, Dept Civil Engn, Daegu 41566, South Korea | 57205686299; 56097886500 | bhkimc@knu.ac.kr; | KSCE JOURNAL OF CIVIL ENGINEERING | KSCE J CIV ENG | 1226-7988 | 1976-3808 | 24 | 12 | SCIE | ENGINEERING, CIVIL | 2020 | 1.805 | 69.0 | 1.73 | 2025-06-25 | 34 | 42 | Urban flooding; Observed rainfall; Hazard rating; Machine learning; Flood prediction; Random forest | REGRESSION | Flood prediction; Hazard rating; Machine learning; Observed rainfall; Random forest; Urban flooding | Debris; Decision trees; Floods; Flow velocity; Hazards; Long short-term memory; Predictive analytics; Rain; Random forests; Water management; Flood hazards; Goodness of fit; Input datas; Prediction accuracy; Prediction model; Rainfall event; Storm water management model; Training data; Forecasting | English | 2020 | 2020-12 | 10.1007/s12205-020-0951-z | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Helicobacter pylori Eradication Regressed Gastric Hyperplastic Polyp: A Randomized Controlled Trial | Background Helicobacter pylori infection and hyperplastic polyp are known to have strong connections, but there are not enough randomized controlled trial data. Aims To evaluate the effect of H. pylori eradication on gastric hyperplastic polyp. Method This is an open-labeled, single-center, randomized controlled trial. Patients with hyperplastic polyp and current infection of H. pylori were randomly assigned to eradication or non-eradication groups. All participants underwent follow-up endoscopy to investigate the regression of gastric polyps. Gastric polyp regression was defined as the disappearance of polyps or a reduction of more than 50% in size. Results Thirty-two patients were randomized to eradication (n = 17) and non-eradication groups (n = 15). Final included patients were 14 in eradication group and 13 in non-eradication group. All patients showed polyp regression in eradication group, whereas no regression was observed in non-eradication group (P < 0.001). Disappearance of polyp (n = 7) and decrease in size (n = 7) were observed in eradication group. In non-eradication group, no change (n = 5), increase of size (n = 5), and increase of number (n = 3) were observed. Mean regression time was 6.8 months, and disappearance time was 9.8 months. In non-eradication group, hyperglycemia was noted in 50% of progression group but not noted in no change group (P = 0.057). Conclusions H. pylori eradication induced regression of hyperplastic polyp, and persistent H. pylori infection was related to progression of gastric polyp. | Nam, Su Youn; Lee, Sang Won; Jeon, Seong Woo; Kwon, Yong Hwan; Lee, Hyun Seok | Kyungpook Natl Univ, Kyungpook Natl Univ Hosp Chilgok, Sch Med, Dept Gastroenterol, 807 Hoguk Ro, Daegu 41404, South Korea | ; Jeon, Seongwoo/AAU-4618-2020 | 55617028500; 57214076852; 9733636500; 55775556800; 36647886100 | nam20131114@gmail.com; | DIGESTIVE DISEASES AND SCIENCES | DIGEST DIS SCI | 0163-2116 | 1573-2568 | 65 | 12 | SCIE | GASTROENTEROLOGY & HEPATOLOGY | 2020 | 3.199 | 69.0 | 0.94 | 2025-06-25 | 13 | 14 | Gastric polyp; Helicobacter pylori; Eradication; Regression | MALIGNANT-TRANSFORMATION; DISAPPEARANCE; MANAGEMENT; CARCINOMA | Eradication; Gastric polyp; Helicobacter pylori; Regression | Adenomatous Polyps; Amoxicillin; Anti-Bacterial Agents; Breath Tests; Clarithromycin; Drug Monitoring; Endoscopy, Digestive System; Female; Helicobacter Infections; Helicobacter pylori; Humans; Lansoprazole; Male; Middle Aged; Outcome Assessment, Health Care; Proton Pump Inhibitors; Stomach Neoplasms; amoxicillin; bismuth citrate; clarithromycin; lansoprazole; metronidazole; tetracycline; amoxicillin; antiinfective agent; clarithromycin; lansoprazole; proton pump inhibitor; adult; Article; bacterial clearance; case report; clinical article; controlled study; esophagogastroduodenoscopy; female; follow up; Helicobacter infection; Helicobacter pylori; human; male; nonhuman; outcome assessment; priority journal; randomized controlled trial; stomach polyp; treatment duration; adenomatous polyp; breath analysis; diagnostic imaging; digestive tract endoscopy; drug effect; drug monitoring; Helicobacter infection; Helicobacter pylori; isolation and purification; microbiology; middle aged; pathophysiology; procedures; stomach tumor | English | 2020 | 2020-12 | 10.1007/s10620-020-06065-0 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Image Denoising and Refinement Based on an Iteratively Reweighted Least Squares Filter | This paper presents a method to reduce noise and refine detail features of a scene based on an iteratively reweighted least squares method. The performance of the proposed filter, called the iteratively reweighted least squares filter (IRLSF), was compared with the state-of-the-art filters by checking their ability to recover simulated edge models under various degrees of noise contamination. The results of the simulation comparison show that IRLSF is superior to the other filters in terms of its ability to recover the original edge models. To apply IRLSF to real images of a scene captured by a camera, a procedure composed of corner detection, least squares matching, bilinear resampling, and iteratively reweighted least squares is proposed. The experimental results show that IRLSF produces mean images that are effectively denoised, and that its accuracy is less than one half of grey-level-quantization-unit of test images captured by a commercial camera. | Seo, Suyoung | Kyungpook Natl Univ, Dept Civil Engn, Daegu 41566, South Korea | Seo, Suyoung/AAB-8465-2020 | 35198914000 | syseo@knu.ac.kr; | KSCE JOURNAL OF CIVIL ENGINEERING | KSCE J CIV ENG | 1226-7988 | 1976-3808 | 24 | 3 | SCIE | ENGINEERING, CIVIL | 2020 | 1.805 | 69.0 | 0.83 | 2025-06-25 | 9 | 12 | Denoising; Least squares matching; Iteratively reweighted least squares | Denoising; Iteratively reweighted least squares; Least squares matching | Cameras; Edge detection; Image denoising; Iterative methods; Corner detection; De-noising; Grey levels; Iteratively reweighted least squares; Least-squares matching; Noise contamination; Simulation comparison; State of the art; Least squares approximations | English | 2020 | 2020-03 | 10.1007/s12205-020-2103-x | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Real-Time Flood Disaster Prediction System by Applying Machine Learning Technique | As rainfall intensity varies irregularly, urban floods can cause extreme damage. Furthermore, they are extremely nonlinear phenomena that are complex to analyze. Therefore, a classification-based real-time flood prediction model for urban areas is constructed in this study, by combining a numerical analysis model based on hydraulic theory with a machine learning model. Flood databases are constructed in advance for different rainfall scenarios using the Environmental Protection Agency-Storm Water Management Model (EPA-SWMM) and a two-dimensional inundation model. The flood depth data for each map grid are divided into five categories based on the average flood depth using the Latin hypercube sampling (LHS) and probabilistic neural network (PNN) classification techniques for higher-precision flood range prediction. A model is constructed to predict the representative cumulative volume if the observed rainfall is entered. For spatial expansion of the flood depth with the predicted representative cumulative volume, a system capable of generating a real-time flood map is constructed by linking the cumulative volume of each grid with the representative cumulative volume using linear and nonlinear regression. When compared with the results of a verified two-dimensional (2D) flood model, the developed-model goodness-of-fit is 85%, with a required run time of 1 min 12 s. Using the developed system, rainfall-induced flooding can potentially be predicted, facilitating disaster risk management and minimizing damage to property and health. | Keum, Ho Jun; Han, Kun Yeun; Kim, Hyun Il | Natl Disaster Management Res Inst, Ulsan 44429, South Korea; Kyungpook Natl Univ, Dept Civil Engn, Daegu 41566, South Korea | 57205691827; 7402963477; 57205686299 | hyunn228@gmail.com; | KSCE JOURNAL OF CIVIL ENGINEERING | KSCE J CIV ENG | 1226-7988 | 1976-3808 | 24 | 9 | SCIE | ENGINEERING, CIVIL | 2020 | 1.805 | 69.0 | 1.96 | 2025-06-25 | 28 | 37 | Urban flood prediction; Drainage system; Urban inundation model; Rainfall-inundation database; Artificial neural network (ANN) | RAINFALL; MODELS | Artificial neural network (ANN); Drainage system; Rainfall-inundation database; Urban flood prediction; Urban inundation model | Disasters; Environmental Protection Agency; Floods; Forecasting; Health risks; Machine learning; Rain; Risk management; Water management; Classification technique; Latin hypercube sampling; Machine learning models; Machine learning techniques; Numerical analysis models; Probabilistic neural networks; Storm water management model; Two Dimensional (2 D); Predictive analytics | English | 2020 | 2020-09 | 10.1007/s12205-020-1677-7 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | The characteristics of antireflux surgery compared to proton pump inhibitor treatment in Korea: a nationwide study using claim data from 2007 to 2016 | Purpose: Laparoscopic antireflux surgery is not widely used in Korea, but published data suggest that its results are comparable to those of Western countries. The purpose of this study was to compare the clinical characteristics, medical utilization, and medical costs of antireflux surgery and proton pump inhibitor (PPI) treatments. Methods: We used Korean patients who underwent fundoplication In = 342, surgery group) and a 25% random sample of all patients diagnosed with gastroesophageal reflux disease (GERD) who were prescribed PPIs for more than 12 weeks (n = 130,987, medication group) between 2007 to 2016. We compared medical costs and utilization between the 2 groups. Results: The average cost of fundoplication was $4,631. The costs of GERD treatment in the first year after surgery and during the follow-up period were $78.1 and $50.1 per month, respectively. In the surgery group, the average monthly medical expenses decreased as the year progressed, but the average monthly medical expenses ($137.5 per month) did not decrease in the medication group. After stratifying by age group, the medical costs of the surgery group were tower than those of the medication group for all ages except for patients between the ages of 70 and 79. The cost difference between the 2 groups was prominent between the ages of 20 and 49. Conclusion: This study showed that a significant decrease in cost was observed 1 year after surgery, and it was more apparent in younger patients. Further research is needed to determine the appropriateness of antireflux surgery for each group of patients. | Park, Susan; Kwon, Jin-Won; Park, Joong-Min; Park, Sungsoo; Hwang, Jinseub; Seo, Kyung Won | Kyungpook Natl Univ, Coll Pharm, Daegu, South Korea; Kyungpook Natl Univ, Res Inst Pharmaceut Sci, Daegu, South Korea; Chung Ang Univ, Dept Surg, Coll Med, Seoul, South Korea; Korea Univ, Dept Surg, Coll Med, Seoul, South Korea; Daegu Univ, Div Math & Big Data Sci, Daegu, South Korea; Kosin Univ, Dept Surg, Coll Med, 262 Gamcheon Ro, Busan 49267, South Korea | Park, Susan/JRY-5671-2023; Park, Sun-Young/B-4634-2014; 박, 중민/GMW-4506-2022 | 57964951700; 16202951700; 14030287200; 57187346700; 57189231296; 55436089700 | kwseo@kosin.ac.kr; | ANNALS OF SURGICAL TREATMENT AND RESEARCH | ANN SURG TREAT RES | 2288-6575 | 2288-6796 | 98 | 5 | SCIE | SURGERY | 2020 | 1.859 | 69.0 | 0.09 | 2025-06-25 | 4 | 3 | Costs; Fundoplication; Gastroesophageal reflux disease; Proton pump inhibitor | GASTROESOPHAGEAL-REFLUX DISEASE; LAPAROSCOPIC NISSEN FUNDOPLICATION; TERM COST-EFFECTIVENESS; MANAGEMENT; GUIDELINES; DIAGNOSIS; THERAPY | Costs; Fundoplication; Gastroesophageal reflux disease; Proton pump inhibitor | English | 2020 | 2020-05 | 10.4174/astr.2020.98.5.254 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | THE ENVIRONMENTAL VALUE OF SOUTH KOREA'S MOUNTAINS: A CONTINGENT VALUATION STUDY | To address the lack of awareness on environmental values, this study estimates the environmental value of mountain ranges (Jeongmaek) connected to the Baekdudaegan mountain system in South Korea. Seven Jeongmaek are studied during 2011-2016 using a questionnaire survey and the contingent valuation method. Based on willingness to pay (WTP) for biodiversity, this study finds that the lowest estimated WTP was KRW 5813 for Geumbuk and Hannam-Geumbuk Jeongmaek, and the highest value was KRW 120,471 for Hanbuk Jeongmaek. These differences in WTP appear to be significantly determined by education level and number of visits of respondents. | KIM, DONG-PIL; KANG, KEE-RAE; LEE, HAE-JOO; KIM, HEE-CHAE; LEE, WOO-SUNG; CHUNG, BO-KWANG; CHAE, SU-BOK; KIM, CHA-KWON | Pusan Natl Univ, Dept Landscape Architecture, Busan, South Korea; Pusan Natl Univ, Inst Comprehens Bio Ind, Busan, South Korea; Korea Natl Arboretum, Pochon, South Korea; Daegu Univ, Dept Landscape Architecture, Gyongsan, South Korea; Baekdudaegan Natl Arboretum, Bonghwa, South Korea; Busan Dev Inst, Busan, South Korea; Kyungpook Natl Univ, Grad Sch, Dept Landscape Architecture, Daegu, South Korea | Chae, Subok/JUV-5264-2023 | 56109773200; 57219313339; 57219312907; 57219312771; 57219310258; 57219315273; 57214320841; 57219319318 | kr4yn@naver.com; | SINGAPORE ECONOMIC REVIEW | SINGAP ECON REV | 0217-5908 | 1793-6837 | 65 | 6 | SSCI | ECONOMICS | 2020 | 1.315 | 69.0 | 0 | 2025-06-25 | 0 | 0 | Environmental goods; environmental value; public goods; CVM; willingness to pay | CVM; Environmental goods; environmental value; public goods; willingness to pay | Baekdudaegan; South Korea; contingent valuation; environmental economics; environmental values; mountain region; public goods; willingness to pay | English | 2020 | 2020-12 | 10.1142/s0217590820500459 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Equality of the Kelvin and Korteweg-Helmholtz Force Densities Inside Dielectric Materials | The net force is enough to predict the motion of an object, but to predict its deformation, the distribution of the force inside the object should be known. In the continuum electromechanics, various expressions are used to calculate the electric forces acting on a dielectric object. The Kelvin and the Korteweg-Helmholtz forces are the most common electric body forces. The net force resulting from both of these "forces" is equal, but the distribution of these two forces inside a dielectric material is different because the expressions of both these forces lose their physical manifestation in the derivation process. This article is primarily aimed at revealing the common mistakes that are made when deriving volumetric force density. Then, the concept of an infinitesimal particle and external electric field is introduced. By using this concept, the electric force density inside a dielectric material is uniquely determined irrespective of the force expression, which is shown analytically and numerically. | Park, B. S.; Choi, H. S.; Park, J. O.; Wang, J. H.; Park, I. H. | Sungkyunkwan Univ, Dept Elect & Comp Engn, Suwon 16419, South Korea; Kyungpook Natl Univ, Dept Elect Engn, Daegu 41566, South Korea | ; Juyoung, Park/LMQ-3664-2024 | 56591130200; 7404338767; 57212577723; 57215926406; 56737616500 | ihpark@skku.ac.kr; | IEEE TRANSACTIONS ON MAGNETICS | IEEE T MAGN | 0018-9464 | 1941-0069 | 56 | 4 | SCIE | ENGINEERING, ELECTRICAL & ELECTRONIC;PHYSICS, APPLIED | 2020 | 1.7 | 69.1 | 0.38 | 2025-06-25 | 7 | 6 | Electric force density; external electric field; infinitesimal particle; Kelvin force; Korteweg-Helmholtz force | Electric force density; external electric field; infinitesimal particle; Kelvin force; Korteweg-Helmholtz force | Electric fields; Electric force; External electric field; Helmholtz forces; Infinitesimal particles; Kelvin force; Dielectric materials | English | 2020 | 2020-04 | 10.1109/tmag.2019.2952448 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Hybrid Analysis Method Considering the Axial Flux Leakage in Spoke-Type Permanent Magnet Machines | In this article, a novel hybrid analysis method for spoke-type permanent magnet (PM) machines (STPMMs) is presented, which considers axial flux leakage using the machine's lumped magnetic circuit. The STPMM can increase its air-gap flux density due to its effective flux concentration, but high flux leakage occurs in the axial end of its PMs. This results in a discrepancy between conventional 2-D finite-element analysis results and experimental data. To correct the discrepancy resulting from the unwanted axial flux leakage, a virtual residual flux density of the PM is proposed through equivalent circuits and a finite analysis model. The modified residual flux density is applied to 2-D numerical analyses, and the accuracy and usefulness of the proposed method are confirmed through 3-D numerical analyses. | Seo, Jung-Moo; Ro, Ah-Reum; Kim, Rae-Eun; Seo, Jangho | Korea Elect Technol Inst, Intelligent Mechatron Res Ctr, Gyeonggi 420140, South Korea; Kyungpook Natl Univ, Sch Automot Engn, Sangju 742711, South Korea | 8570719900; 57204980402; 57189235125; 12791073600 | j.seo@knu.ac.kr; | IEEE TRANSACTIONS ON MAGNETICS | IEEE T MAGN | 0018-9464 | 1941-0069 | 56 | 9 | SCIE | ENGINEERING, ELECTRICAL & ELECTRONIC;PHYSICS, APPLIED | 2020 | 1.7 | 69.1 | 0.68 | 2025-06-25 | 10 | 11 | Axial flux leakage; lumped magnetic circuit; residual flux density; spoke-type permanent magnet machine (STPMM) | Axial flux leakage; lumped magnetic circuit; residual flux density; spoke-type permanent magnet machine (STPMM) | Electric machinery; Equivalent circuits; Magnetic circuits; Magnetic leakage; Numerical analysis; Numerical methods; 2D finite element analysis; 3-D numerical analysis; Air gap flux density; Finite analysis; Flux concentration; Hybrid analysis method; Lumped magnetic circuits; Permanent-magnet machine; Permanent magnets | English | 2020 | 2020-09 | 10.1109/tmag.2020.3003268 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Knockdown of TRPM7 prevents tumor growth, migration, and invasion through the Src, Akt, and JNK pathway in bladder cancer | Background Bladder cancer (BC) is one of the most common malignancies of the urinary tract. The role of transient receptor potential melastatin 7 (TRPM7) in BC remains unclear. The aim of this study was to investigate the function and signal transduction pathway of TRPM7 in BC. Methods T24 and UMUC3 cells were used to evaluate the molecular mechanism of TRPM7 by immunoblot analysis. Small interfering RNA was used to knockdown TRPM7, and the effect of silencing TRPM7 was studied by wound healing, migration, and invasion assays in T24 and UMUC3 cells. Xenograft model study was obtained to analyze the effect of TRPM7 inhibition in vivo. Results Silencing of TRPM7 decreased the migration and invasion ability of T24 and UMUC3 cells. The phosphorylation of Src, Akt, and JNK (c-Jun N-terminal kinase) was also suppressed by TRPM7 silencing. Src, Akt, and JNK inhibitors effectively inhibited the migration and invasion of T24 and UMUC3 cells. In addition, the TRPM7 inhibitor, carvacrol, limited the tumor size in a xenograft model. Conclusion Our data reveal that TRPM7 regulates the migration and invasion of T24 and UMUC3 cells via the Src, Akt, and JNK signaling pathway. Therefore, TRPM7 suppression could be a potential treatment for BC patients. | Lee, Eun Hye; Chun, So Young; Kim, Bomi; Yoon, Bo Hyun; Lee, Jun Nyung; Kim, Bum Soo; Yoo, Eun Sang; Lee, Sangkyu; Song, Phil Hyun; Kwon, Tae Gyun; Ha, Yun-Sok | Kyungpook Natl Univ Hosp, Joint Inst Regenerat Med, Daegu, South Korea; Kyungpook Natl Univ Hosp, Biomed Res Inst, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Dept Urol, Daegu, South Korea; Kyungpook Natl Univ, Chilgok Hosp, Sch Med, Dept Urol, Daegu, South Korea; Kyungpook Natl Univ, Kyungpook Natl Univ Hosp, Sch Med, Dept Urol, Daegu, South Korea; Kyungpook Natl Univ, Res Inst Pharmaceut Sci, Coll Pharm, BK21 Plus KNU Multiom Based Creat Drug Res Team, Daegu, South Korea; Yeungnam Univ, Coll Med, Dept Urol, Daegu, South Korea | Kim, Soo-Yeon/ADR-9663-2022 | 57189661699; 8688166900; 57218929773; 57218931150; 16301364600; 57202817150; 7006609239; 57209046767; 8644562400; 15073765400; 35487226400 | tgkwon@knu.ac.kr;yunsokha@gmail.com; | BMC UROLOGY | BMC UROL | 1471-2490 | 20 | 1 | SCIE | UROLOGY & NEPHROLOGY | 2020 | 2.264 | 69.1 | 1.8 | 2025-06-25 | 19 | 18 | Bladder cancer; TRPM7; Src; Akt; JNK | CELLS; METASTASIS; ACTIVATION; PROLIFERATION; TRANSPORTER; SUPPRESSION; INHIBITION; EXPRESSION; ADHESION; CHANNEL | Akt; Bladder cancer; JNK; Src; TRPM7 | Animals; Cell Movement; Cell Proliferation; Female; Gene Knockdown Techniques; Humans; MAP Kinase Signaling System; Mice; Mice, Inbred BALB C; Neoplasm Invasiveness; Oncogene Protein pp60(v-src); Protein-Serine-Threonine Kinases; Proto-Oncogene Proteins c-akt; Signal Transduction; TRPM Cation Channels; Tumor Cells, Cultured; Urinary Bladder Neoplasms; carvacrol; protein tyrosine kinase; small interfering RNA; stress activated protein kinase; transient receptor potential channel M7; protein kinase B; protein kinase p60; protein serine threonine kinase; transient receptor potential channel M; TRPM7 protein, human; Akt signaling; animal experiment; animal model; animal tissue; antineoplastic activity; Article; bladder cancer; cancer inhibition; cell proliferation; cell viability assay; controlled study; female; gene knockdown; gene silencing; human; human cell; immunoblotting; immunohistochemistry; in vitro study; in vivo study; metastasis; mouse; nonhuman; protein expression; protein function; protein phosphorylation; T24 cell line; tumor growth; tumor invasion; tumor volume; tumor xenograft; UM-UC-3 cell line; wound healing; wound healing assay; animal; Bagg albino mouse; bladder tumor; cell motion; gene knockdown; genetics; MAPK signaling; pathology; physiology; signal transduction; tumor cell culture; tumor invasion | English | 2020 | 2020-09-09 | 10.1186/s12894-020-00714-2 | 바로가기 | 바로가기 | 바로가기 | 바로가기 |
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