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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 | Prognosis of Continuous Positive Airway Pressure Treatment to Velopharyngeal Insufficiency: Preliminary Study | Background: Cleft palate is a congenital malformation that causes hypernasality and decreases the intelligibility of pronunciation and leads to velopharyngeal insufficiency. It causes difficulty in language development. Many studies and treatments have been conducted to reduce this problem, but there are limitations. In this study, the effect obtained through continuous positive airway pressure (CPAP) treatment was analyzed by statistical methods. Methods: From May 2012 to December 2018, using patient demographics, computed tomography (CT) scan, and nasalance test was performed on 25 patient groups treated with CPAP devices for 8 weeks to confirm the effect after 6 months. Results: After CPAP treatment in a total of 25 patients, 13 patients had a therapeutic effect. The average age of the patient group with treatment effect (effective group [EG]) was 51.2months, and the patient group with no treatment effect (ineffective group [iG]) was 73.6 months. (P < 0.05). In CT data analysis, the highest palatal arch point was 6.31 mm in EG and 7.36 mm in IG, which was lower in EG (P < 0.01), and the distance from incisive foramen to posterior pharyngeal wall was 41.39 mm in EG and 49.07 mm in IG (P < 0.05). Conclusions: Through the statistical analysis, the group of patients who were effective in treatment had a low age at the beginning of treatment, the height of highest palatal arch point was low on CT data, and the length of distance from incisive foramen to posterior pharyngeal wall was short. It will be helpful to set the CPAP treatment patient group with respect to the results and age and CT data when treating VPI patients. | Kim, Jong Seong; Lee, Seung Eun; Ryu, Jeong Yeop; Lee, Joon Seok; Yang, Jung Dug; Chung, Ho Yun; Cho, Byung Chae; Choi, Kang Young | Kyungpook Natl Univ, Sch Med, Dept Plast & Reconstruct Surg, 130 Dongdeok Ro, Daegu 700421, South Korea; Kyungpook Natl Univ, Sch Med, Dept Otorhinolaryngol, Daegu, South Korea | Yang, Jung/R-7806-2019; Ryu, Jeong Yeop/GLQ-9419-2022; LEE, JIN/Q-3108-2018 | 57210152149; 58983964200; 56366349400; 56496041000; 55171704700; 7404007181; 55662871100; 57203745682 | kychoi@knu.ac.kr; | JOURNAL OF CRANIOFACIAL SURGERY | J CRANIOFAC SURG | 1049-2275 | 1536-3732 | 33 | 6 | SCIE | SURGERY | 2022 | 0.9 | 87.6 | 0.22 | 2025-06-25 | 1 | 1 | cleft palate; CPAP; language evaluation; speech therapy | CLEFT-PALATE; SPEECH; HYPERNASALITY; CHILDREN; THERAPY | cleft palate; CPAP; language evaluation; speech therapy | English | 2022 | 2022-09 | 10.1097/scs.0000000000008665 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | The Effect of Orthognathic Surgery on Changes in Masticatory Muscle Volume in Patients With Facial Asymmetry | The masseter muscle changes remarkably with orthognathic surgery and has a marked influence on the contours of the lower face. If the postoperative volume change of masticatory muscles, including the masseter muscles, can be predicted, it will facilitate preoperative planning and outcome prediction. This study investigated the association of masticatory muscle volume according to the presence or absence of facial asymmetry, and evaluated whether the volume of masticatory muscles, including that of the masseter muscle, changes after orthognathic surgery in facial asymmetry patients. Twenty patients who underwent LeFort I osteotomy and bilateral sagittal segmentation ramus osteotomy (BSSRO) with facial asymmetry between 2011 and 2017 were assigned to the asymmetric group. Additionally, 207 patients with a simple nasal fracture between 2016 and 2019 were included as the common group. Threedimensional computed tomography images were retrospectively analyzed and compared between the asymmetric group and common group. The volume of both temporal and masseter muscles differed according to facial asymmetry, with the asymmetry in the muscle volume increasing in proportion to the degree of facial asymmetry. The difference in masseter volume on the shortened and lengthened sides was significantly reduced after orthognathic surgery, but a difference of about 1 cm(3) remained. Additionally, the masticatory muscle volume on the lengthened side tended to be decreased more than that on the shortened side. Consideration of the postoperative change in the volume of the masticatory muscles may be helpful in planning orthognathic surgery in facial asymmetry patients. | Eo, Pil Seon; Park, Tae Hyun; Ryu, Jeong Yeop; Lee, Joon Seok; Yang, Jung Dug; Chung, Ho Yun; Cho, Byung Chae; Choi, Kang Young | Kyungpook Natl Univ, Sch Med, Dept Plast & Reconstruct Surg, 130 Dongdeok Ro, Daegu 41944, South Korea | Ryu, Jeong Yeop/GLQ-9419-2022; Yang, Jung/R-7806-2019; LEE, JIN/Q-3108-2018 | 57205401706; 57223690181; 56366349400; 56496041000; 55171704700; 7404007181; 55662871100; 57203745682 | kychoi@knu.ac.kr; | JOURNAL OF CRANIOFACIAL SURGERY | J CRANIOFAC SURG | 1049-2275 | 1536-3732 | 33 | 5 | SCIE | SURGERY | 2022 | 0.9 | 87.6 | 2.85 | 2025-06-25 | 11 | 13 | Facial asymmetry; imaging; masticatory muscles; orthognathic surgery; three-dimensional | TOXIN TYPE-A; MASSETER MUSCLE; HEMIFACIAL MICROSOMIA; MANDIBULAR ANGLE; HYPERTROPHY; MORPHOLOGY | Facial asymmetry; imaging; masticatory muscles; orthognathic surgery; three-dimensional | Facial Asymmetry; Humans; Mandible; Masseter Muscle; Masticatory Muscles; Orthognathic Surgery; Orthognathic Surgical Procedures; Retrospective Studies; diagnostic imaging; face asymmetry; human; mandible; masseter muscle; masticatory muscle; orthognathic surgery; procedures; retrospective study; surgery | English | 2022 | 2022 (JUL-AUG) | 10.1097/scs.0000000000008322 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Finite element design of a vibrational membrane to reduce distortion in a bone-conduction implant transducer | This paper describes the finite element design of a vibrational membrane with a cantilever structure to reduce distortion in bone conduction implant (BCI) transducers. To derive the optimal number of cantilevers, a model of ideally aligned components was established based on the structure of a previously proposed transducer, and mechanical vibration analysis was performed using different numbers of cantilevers (two to five). Under the same conditions, similar analyses were performed using vibrational membranes misaligned with the transducer magnet by 0.1 and 0.2 mm. Then, the standard deviations were calculated from the analysis results to numerically compare the magnitudes of vibrations between cantilevers for each cantilever shape. The larger the number of cantilevers, the smaller the standard deviation in both the alignment and misalignment cases. Moreover, from the analysis result, it was confirmed that using a vibrational membrane composed of five cantilevers can reduce distortion in BCI transducers. | Shin, D. H.; Seong, K. W.; Kim, M. N.; Lee, K. Y. | Kyungpook Natl Univ, Inst Biomed Engn Res, Daegu, South Korea; Kyungpook Natl Univ Hosp, Dept Biomed Engn, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Dept Biomed Engn, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Dept Otorhinolaryngol Head & Neck Surg, Daegu, South Korea | Kim, Sunghoon/Z-2981-2019; Lee, Doh Young/GLR-9586-2022 | 56693502600; 23968197900; 57212315655; 22135779500 | drlky@hanmail.net; | ELECTRONICS LETTERS | ELECTRON LETT | 0013-5194 | 1350-911X | 58 | 5 | SCIE | ENGINEERING, ELECTRICAL & ELECTRONIC | 2022 | 1.1 | 87.8 | 0 | 2025-06-25 | 0 | 0 | HISTORY | Finite element method; Nanocantilevers; Statistics; Structural design; Vibration analysis; Bone conduction implants; Cantilever structures; Condition; Finite element design; Mechanical; Optimal number; Similar analysis; Standard deviation; Vibrations analysis; Transducers | English | 2022 | 2022-03 | 10.1049/ell2.12403 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Systematic evaluation of recursive approach of EEG-segment-based PCA for removal of helium-pump artefact from MRI | The cryogenic pump is a crucial component of the magnetic resonance imaging (MRI) system for delivering liquid helium to a magnet for superconductivity, thereby generating a mechanical vibration. Thus, the cryogenic pump for liquid helium (helium pump) contaminates the electroencephalography (EEG) simultaneously acquired with functional MRI. The recursive approach of EEG-segment-based principal component analysis (rsPCA) has recently demonstrated its efficacy in removing this helium pump artefact. In the rsPCA, the recursion depth and EEG-segment size are crucial hyperparameters. rsPCA's performance and computational time across recursion depth (1, 2, 3) and segment sizes (165, 220, 265) are systematically evaluated. It is found that the recursion depth of 2 yielded significant reductions in the computational time compared to the depth of 3 across all segment sizes while maintaining the denoising performance. The binary classification performance (left-hand versus right-hand clenching) was also enhanced in this scenario (especially the use of EEG-segment size of 165 and 220) by using EEG gamma-band activity (30-50 Hz), which is predominantly contaminated by the helium-pump artefact. | Kim, Hyun-Chul; Lee, Jong-Hwan | Kyungpook Natl Univ, Dept Artificial Intelligence, Daegu, South Korea; Korea Univ, Dept Brain & Cognit Engn, Seoul, South Korea | Kim, Leehyung/AAN-6760-2020; Lee, Jong-Hwan/LBH-6241-2024 | 57194876917; 36065360400 | hyunchul_kim@knu.ac.kr;jonghwan_lee@korea.ac.kr; | ELECTRONICS LETTERS | ELECTRON LETT | 0013-5194 | 1350-911X | 58 | 15 | SCIE | ENGINEERING, ELECTRICAL & ELECTRONIC | 2022 | 1.1 | 87.8 | 0.16 | 2025-06-25 | 1 | 2 | FMRI REVEALS; VALIDATION; REDUCTION; DYNAMICS | Cryogenics; Electroencephalography; Magnetic resonance imaging; Principal component analysis; Pumps; Superfluid helium; Vibrations (mechanical); Computational time; Cryogenic pumps; Liquid helium; Magnetic-resonance-imaging systems; Performance; Principal-component analysis; Recursions; Recursive approach; Segment-based; Systematic evaluation; Electrophysiology | English | 2022 | 2022-07 | 10.1049/ell2.12519 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Training data reduction for deep learning-based image classifications using random sample consensus | Training data for deep learning algorithms can have many redundancies, which should be resolved to achieve faster training speed and efficient storage usage. We proposed a random sample consensus (RANSAC)-based training data selection technique to reduce the training data size for deep learning-based image classification tasks. First, we formulate the data reduction problem as a least square problem and reformulate the equation as maximizing the accuracy of the total training set. Based on the reformulated equation, we applied an RANSAC algorithm to solve the optimization problem. We obtain superior or comparable accuracies to other data selection approaches, such as random, greedy k-means-based, and least square-based approaches. Notably, our algorithm was not degraded in small data selection, unlike other state-of the art algorithms. (C) 2022 SPIE and IS&T | Jung, Heechul; Ju, Jeongwoo | Kyungpook Natl Univ, Dept Artificial Intelligence, Daegu, South Korea; Captos Co Ltd, Yangsan, South Korea | Jung, Heechul/HTL-7199-2023 | 55652175200; 55651859700 | veryju@captos.co.kr; | JOURNAL OF ELECTRONIC IMAGING | J ELECTRON IMAGING | 1017-9909 | 1560-229X | 31 | 1 | SCIE | ENGINEERING, ELECTRICAL & ELECTRONIC;IMAGING SCIENCE & PHOTOGRAPHIC TECHNOLOGY;OPTICS | 2022 | 1.1 | 87.8 | 0.09 | 2025-06-25 | 1 | 1 | deep learning; core-set selection; data reduction; convolutional neural networks; image classification | convolutional neural networks; core-set selection; data reduction; deep learning; image classification | Classification (of information); Convolutional neural networks; Data reduction; Deep learning; Digital storage; K-means clustering; Learning algorithms; Convolutional neural network; Core set; Core-set selection; Data Selection; Deep learning; Images classification; Random sample consensus; Selection techniques; Training data; Training speed; Image classification | English | 2022 | 2022-01-01 | 10.1117/1.jei.31.1.010501 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Relationship between Apathy and Subjective Poor Night-time Sleep in de novo, Untreated Parkinson's Disease | Background: Sleep disturbance is one of the most common non-motor symptoms of Parkinson's disease (PD). However, the confounding effects of dopaminergic medication on sleep are a major challenge in understanding the impact of sleep disturbance in PD. We investigated the sleep disturbance and associated clinical features in patients with de novo, untreated PD. Methods: One-hundred-eight patients with de novo, untreated PD were included. Night sleep disturbance was evaluated using the night sleep subscale of the Scales for Outcomes in Parkinson's Disease (SCOPA-Sleep). Depression, anxiety, and apathy were assessed using the Geriatric Depression Scale (GDS), Beck Anxiety Inventory (BAI), and Apathy Evaluation Scale (AES), respectively. Early perfusion and dopamine transporter imaging of F-18 FP-CIT PET/CT were performed together with statistical parametric mapping analysis. Results: The night sleep SCOPA-Sleep subscore was correlated with the AES (p = 0.014), BAI (p = 0.014), and GDS (p = 0.023) scores. Patients with poor night sleep were more apathetic (p = 0.013). Additionally, there was increased perfusion in the left posterior cingulate in patients with sleep disturbance and apathy compared to those with sleep disturbance only. Conclusions: Night sleep disturbance was related to mood disorders, particularly apathy, in patients with de novo, untreated PD. | Hong, Chae-Moon; Kim, Do-Hoon; Ahn, Byeong-Cheol; Seo, Jong-Geun; Ryu, Ho-Sung | Kyungpook Natl Univ Hosp, Dept Nucl Med, Daegu 41944, South Korea; Kyungpook Natl Univ, Dept Nucl Med, Sch Med, Daegu 41944, South Korea; Kyungpook Natl Univ Hosp, Dept Neurol, Daegu 41944, South Korea; Kyungpook Natl Univ, Dept Neurol, Sch Med, Daegu 41944, South Korea | Kim, Jong/AAE-8556-2019 | 37050876700; 55624468392; 7202791511; 16040307500; 57014206500 | ryuhosung138@gmail.com; | JOURNAL OF INTEGRATIVE NEUROSCIENCE | J INTEGR NEUROSCI | 0219-6352 | 1757-448X | 21 | 3 | SCIE | NEUROSCIENCES | 2022 | 1.8 | 88.8 | 0.79 | 2025-06-25 | 8 | 7 | apathy; depression; anxiety; sleep disturbance; Parkinson's disease | DEPRESSION RATING-SCALES; NONMOTOR SYMPTOMS; KOREAN VERSION; ANXIETY; CRITIQUE; DISTURBANCE; DISORDERS; CLOCKS | anxiety; apathy; depression; Parkinson's disease; sleep disturbance | Aged; Apathy; Humans; Parkinson Disease; Positron Emission Tomography Computed Tomography; Sleep; Sleep Wake Disorders; antidepressant agent; anxiolytic agent; dopamine transporter; fluorodeoxyglucose f 18; hypnotic agent; aged; anxiety; apathy; apathy evaluation scale; Article; Beck Anxiety Inventory; brain perfusion; clinical feature; cognitive function test; controlled study; cross-sectional study; depression; disease duration; drug use; emotion assessment; female; frontal assessment battery; Geriatric Depression Scale; Hoehn and Yahr scale; human; major clinical study; male; medical record review; Mini Mental State Examination; night sleep; Parkinson disease; positron emission tomography-computed tomography; posterior cingulate; retrospective study; scale for outcome in parkinson disease sleep; sleep disorder; sleep disorder assessment; Unified Parkinson Disease Rating Scale; complication; diagnostic imaging; sleep; sleep disorder | English | 2022 | 2022-04-02 | 10.31083/j.jin2103074 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Survival and medical costs of melanoma patients with subsequent cancer diagnoses: A South Korean population-based retrospective cohort study | Aim Subsequent cancers (SCs) after melanoma diagnosis further increases the risks of mortality and medical costs. This population-based analysis aimed to evaluate risk factors for SC, mortality, and medical costs of melanoma patients with SC. Methods A retrospective cohort analysis was conducted using a nationwide claims database during 2002-2017 in South Korea. SC was defined as having other types of cancer diagnoses other than subsequent melanoma during-up to 5 years after melanoma diagnosis. Melanoma patients were divided into patients with and without SC, and the overall and subgroup survival rates, the risk of developing SC, and the total medical costs were analyzed using a Kaplan-Meier method and regressions. Results A total of 3740 melanoma patients were included in the analysis (mean age, 62.3 +/- 15.4 y; 47.2% men), and 2273 patients (1157 within 2 months, 756 after 2 months of melanoma diagnosis) had SC. Higher Charlson comorbidity index score and male sex significantly increased the risk of developing SC. Five-year survival rate and cumulative medical costs were 62.3% (95% confidence interval [CI], 60.8-63.9) and $21,413, respectively, in all patients. Patients with SC diagnosed after 2 months showed the lowest survival rate of 47.8% (95% CI, 44.3-51.4) and the highest costs of $27,081, showing a mortality hazard ratio of 1.65 (range, 1.46-1.86) and a cost ratio of 1.189 (range, 1.112-1.271) compared with those without SC. Conclusion This study presented survival outcomes and medical costs in melanoma patients and confirmed that SC after the first diagnosis of melanoma significantly increased disease burden in terms of mortality and medical costs. | Park, Hae-Young; Yang, Hyun-Ju; Jeon, Soo Min; Lee, In Hee; Kwon, Jin-Won | Kyungpook Natl Univ, Coll Pharm, BK21 FOUR Community Based Intelligent Novel Drug, Daegu, South Korea; Kyungpook Natl Univ, Res Inst Pharmaceut Sci, Daegu, South Korea; Daegu Catholic Univ, Sch Med, Dept Internal Med, Div Hematol Oncol, Daegu, South Korea | 57203771734; 57224824143; 57206855645; 56390538200; 16202951700 | jwkwon@knu.ac.kr; | ASIA-PACIFIC JOURNAL OF CLINICAL ONCOLOGY | ASIA-PAC J CLIN ONCO | 1743-7555 | 1743-7563 | 18 | 5 | SCIE | ONCOLOGY | 2022 | 1.9 | 89.0 | 0 | 2025-06-25 | 0 | 0 | costs and cost analysis; melanoma; mortality; second primary cancer; survival analysis | 2ND PRIMARY CANCERS; CUTANEOUS MALIGNANT-MELANOMA; RISK; ASSOCIATION | costs and cost analysis; melanoma; mortality; second primary cancer; survival analysis | Aged; Cohort Studies; Female; Humans; Male; Melanoma; Middle Aged; Proportional Hazards Models; Retrospective Studies; Survival Rate; antineoplastic agent; adult; aged; Article; cancer chemotherapy; cancer mortality; cancer radiotherapy; cancer risk; cancer surgery; cancer survival; Charlson Comorbidity Index; cohort analysis; comorbidity; controlled study; disease burden; drug cost; female; follow up; health care cost; high risk patient; human; Korean (people); major clinical study; male; malignant neoplasm; melanoma; middle aged; onset age; overall survival; retrospective study; risk assessment; sex difference; South Korean; subsequent cancer; survival rate; young adult; melanoma; proportional hazards model | English | 2022 | 2022-10 | 10.1111/ajco.13582 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Effects of intravenous iron therapy on mortality and hospitalization of hemodialysis patients: A prospective cohort study in Korea | Iron replacement therapy is necessary for anemia treatment in patients with advanced chronic kidney disease. Intra-venous (IV) iron therapy is an efficient meth-od for iron replacement. However, there are concerns regarding its considerable side effects, including increased risks of infec-tion or major adverse cardiovascular events (MACE). This is a longitudinal study from a multicenter prospective cohort study con-ducted in the Korean end-stage renal dis-ease population. All-cause mortality, death due to infection or MACE, hospitalization due to infection or MACE, and all adverse event of death or hospitalization due to in-fection or MACE were compared according to the iron replacement methods during the first 3 months of enrollment. Among 1,680 hemodialysis patients, 29.3% of patients re-ceived IV iron therapy, and 38% of patients received oral iron therapy. During the me-dian 632 days follow-up, all-cause mortality, mortality or hospitalization due to infection or MACE, and all adverse events did not dif -fer among iron replacement groups. There were significant differences related to the risk of all adverse events among iron re-placement therapies in the log-rank test and univariate Cox regression analysis only in the prevalent dialysis patients; however, the sig-nificance was lost in multivariate Cox regres-sion analysis. Similar results were observed in the 1-year short-term outcome analysis. High-dose IV iron did not increase adverse outcomes. All-cause mortality or all adverse events due to infection or MACE were not higher with the current clinical regimen of IV iron replacement therapy than with oral or no iron therapy in Korean hemodialysis patients. | Ryu, Hyunjin; Lee, Jung Pyo; Oh, Sohee; Cho, Jang-Hee; Chung, Byung Ha; Chung, Sungjin; Chang, Jae Hyun; Hwang, Jin Ho; Kang, Shin-Wook; Lim, Chun Soo | Seoul Natl Univ Hosp, Dept Internal Med, Seoul, South Korea; Seoul Natl Univ, Dept Internal Med, Boramae Med Ctr, Seoul, South Korea; Seoul Natl Univ, Dept Internal Med, Coll Med, Seoul, South Korea; Seoul Natl Univ, Dept Biostat, Boramae Med Ctr, Seoul, South Korea; Kyungpook Natl Univ, Dept Internal Med, Sch Med, Daegu, South Korea; Catholic Univ, Dept Internal Med, Korea Coll Med, Seoul, South Korea; Gachon Univ Med & Sci, Dept Internal Med, Incheon, South Korea; Chung Ang Univ Hosp, Dept Internal Med, Seoul, South Korea; Yonsei Univ, Dept Internal Med, Coll Med, Seoul, South Korea | Chung, Sungjin/AAJ-8836-2020; Lee, Jun-Young/N-5963-2019; Cho, Jang-hee/ABD-3534-2020 | 56029712400; 56028990400; 55509767900; 7403536291; 57201863822; 23388171000; 56673191200; 55561465000; 34768359700; 15019536200 | cslimjy@snu.ac.kr; | CLINICAL NEPHROLOGY | CLIN NEPHROL | 0301-0430 | 97 | 2 | SCIE | UROLOGY & NEPHROLOGY | 2022 | 1.1 | 89.2 | 0 | 2025-06-25 | 0 | 0 | chronic kidney disease; dialysis; iron usage; intravenous iron; outcome | CHRONIC KIDNEY-DISEASE; ANEMIA; DIALYSIS; RISK; CKD | chronic kidney disease; dialysis; intravenous iron; iron usage; outcome | Hospitalization; Humans; Iron; Kidney Failure, Chronic; Longitudinal Studies; Prospective Studies; Renal Dialysis; antianemic agent; iron; iron; adult; adverse outcome; all cause mortality; anemia; Article; cardiovascular disease; cardiovascular risk; cohort analysis; comparative study; controlled study; death; drug efficacy; drug megadose; drug safety; drug use; end stage renal disease; female; follow up; hemodialysis patient; high risk patient; hospitalization; human; incidence; infection; infection risk; iron therapy; longitudinal study; major clinical study; male; mortality; observational study; prevalence; prospective study; South Korea; South Korean; substitution therapy; chronic kidney failure; clinical trial; complication; hemodialysis; hospitalization; multicenter study | English | 2022 | 2022-02 | 10.5414/cn110042 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Deep Learning-Based Automatic CT Quantification of Coronavirus Disease 2019 Pneumonia: An International Collaborative Study | Objective We aimed to develop and validate the automatic quantification of coronavirus disease 2019 (COVID-19) pneumonia on computed tomography (CT) images. Methods This retrospective study included 176 chest CT scans of 131 COVID-19 patients from 14 Korean and Chinese institutions from January 23 to March 15, 2020. Two experienced radiologists semiautomatically drew pneumonia masks on CT images to develop the 2D U-Net for segmenting pneumonia. External validation was performed using Japanese (n = 101), Italian (n = 99), Radiopaedia (n = 9), and Chinese data sets (n = 10). The primary measures for the system's performance were correlation coefficients for extent (%) and weight (g) of pneumonia in comparison with visual CT scores or human-derived segmentation. Multivariable logistic regression analyses were performed to evaluate the association of the extent and weight with symptoms in the Japanese data set and composite outcome (respiratory failure and death) in the Spanish data set (n = 115). Results In the internal test data set, the intraclass correlation coefficients between U-Net outputs and references for the extent and weight were 0.990 and 0.993. In the Japanese data set, the Pearson correlation coefficients between U-Net outputs and visual CT scores were 0.908 and 0.899. In the other external data sets, intraclass correlation coefficients were between 0.949-0.965 (extent) and between 0.978-0.993 (weight). Extent and weight in the top quartile were independently associated with symptoms (odds ratio, 5.523 and 10.561; P = 0.041 and 0.016) and the composite outcome (odds ratio, 9.365 and 7.085; P = 0.021 and P = 0.035). Conclusions Automatically quantified CT extent and weight of COVID-19 pneumonia were well correlated with human-derived references and independently associated with symptoms and prognosis in multinational external data sets. | Yoo, Seung-Jin; Qi, Xiaolong; Inui, Shohei; Kim, Hyungjin; Jeong, Yeon Joo; Lee, Kyung Hee; Lee, Young Kyung; Lee, Bae Young; Kim, Jin Yong; Jin, Kwang Nam; Lim, Jae-Kwang; Kim, Yun-Hyeon; Kim, Ki Beom; Jiang, Zicheng; Shao, Chuxiao; Lei, Junqiang; Zou, Shengqiang; Pan, Hongqiu; Gu, Ye; Zhang, Guo; Goo, Jin Mo; Yoon, Soon Ho | Hanyang Univ, Coll Med, Dept Radiol, Med Ctr, Seoul, South Korea; Lanzhou Univ, CHESS Ctr, Hosp 1, Lanzhou, Peoples R China; Univ Tokyo, Grad Sch Med, Dept Radiol, Tokyo, Japan; Japan Self Def Forces Cent Hosp, Dept Radiol, Tokyo, Japan; Seoul Natl Univ Hosp, Dept Radiol, Seoul Natl Coll Med, 101 Daehak Ro, Seoul 03080, South Korea; Pusan Natl Univ, Sch Med, Dept Radiol, Pusan Natl Univ Hosp, Busan, South Korea; Biomed Res Inst, Busan, South Korea; Seoul Natl Univ, Dept Radiol, Bundang Hosp, Seongnam, South Korea; Seoul Med Ctr, Dept Radiol, Seoul, South Korea; Catholic Univ Korea, Dept Radiol, Eunpyeong St Marys Hosp, Coll Med, Seoul, South Korea; Incheon Med Ctr, Dept Internal Med, Div Infect Dis, Incheon, South Korea; Seoul Natl Univ, Dept Radiol, Seoul Metropolitan Govt, Boramae Med Ctr, Seoul, South Korea; Kyungpook Natl Univ, Dept Radiol, Sch Med, Daegu, South Korea; Honnam Natl Univ, Dept Radiol, Med Sch, Gwangju, South Korea; Daegu Fatima Hosp Daegu, Dept Radiol, Daegu, South Korea; Ankang Cent Hosp, Dept Infect Dis, Ankang, South Korea; Lishui Cent Hosp, CHESS COVID 19 Grp, Lishui, Peoples R China; Lanzhou Univ, Dept Radiol, Hosp 1, Lanzhou, Peoples R China; Jiangsu Univ, Dept Infect Dis, Affiliated Hosp 3, Zhenjiang, Jiangsu, Peoples R China; Sixth Peoples Hosp Shenyang, CHESS COVID 19 Grp, Shenyang, Peoples R China; Peoples Hosp Guangxi Auang Autonomous Reg, CHESS COVID 19 Grp, Nanning, Peoples R China; UMass Mem Med Ctr, Dept Radiol, Worcester, MA USA | ; Kim, Hyungjin/JED-7172-2023; Goo, Jin Mo/AFT-4543-2022; jiang, zicheng/JAX-7607-2023; ZHANG, GUO/D-2556-2014 | 57676569700; 55753297300; 57208347141; 57207824165; 57706214000; 26643166000; 56436943800; 8532413500; 57211142178; 22035230800; 55515341400; 35313444300; 59080545400; 57210265235; 36112056200; 13807859500; 56405068900; 53880267800; 57216336556; 7405270483; 7006253916; 57219956574 | yshoka@gmail.com; | JOURNAL OF COMPUTER ASSISTED TOMOGRAPHY | J COMPUT ASSIST TOMO | 0363-8715 | 1532-3145 | 46 | 3 | SCIE | RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING | 2022 | 1.3 | 89.3 | 0.55 | 2025-06-25 | 3 | 4 | COVID-19; pneumonia; deep learning; computed tomography | CHEST CT; COVID-19 PNEUMONIA; SEVERITY; SEGMENTATION | computed tomography; COVID-19; deep learning; pneumonia | COVID-19; Deep Learning; Humans; Pneumonia; Retrospective Studies; Tomography, X-Ray Computed; Computerized tomography; Correlation methods; Deep learning; Diagnosis; Regression analysis; Statistical tests; Automatic quantification; Computed tomography; Computed tomography images; Computed tomography scan; Data set; Deep learning; Intraclass correlation coefficients; Odd ratios; Pneumonia; Systems performance; adult; aged; Article; automation; cerebrovascular disease; chronic kidney failure; comorbidity; cone beam computed tomography; controlled study; coronary artery disease; coronavirus disease 2019; correlation coefficient; deep learning; deep neural network; digital imaging and communications in medicine; female; follow up; heart failure; human; hypertension; image quality; image segmentation; lung parenchyma; lymphocyte count; major clinical study; male; multidetector computed tomography; non insulin dependent diabetes mellitus; pleura effusion; prognosis; real time polymerase chain reaction; retrospective study; segmentation algorithm; x-ray computed tomography; diagnostic imaging; pneumonia; procedures; x-ray computed tomography; COVID-19 | English | 2022 | 2022 (MAY-JUN) | 10.1097/rct.0000000000001303 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Feasibility of Deep Learning-Based Noise and Artifact Reduction in Coronal Reformation of Contrast-Enhanced Chest Computed Tomography | Purpose: This study aimed to evaluate the feasibility of a deep learning method for imaging artifact and noise reduction in coronal reformation of contrast-enhanced chest computed tomography (CT). Methods: A total of 19,052 coronal reformatted chest CT images of 110 CT image sets (55 pairs of concordant 16- and 320-row CT image sets) were included and used to train a deep learning algorithm for artifact and noise correction. For internal validation, 4093 coronal reformatted CT images of 25 patients from 16-row CT images underwent correction processing. For external validation, chest CT images of 30 patients (1028 coronal reformatted CT images), acquired in other institutions using different scanners, were subjected to correction processing. For both validations, image quality was compared between original ("CTorigin") and deep learning-based corrected ("CTcorrect") CTimages. Quantitative analysis for stair-step artifact (coefficient of variance of CT density on coronal reformation), image noise, signal-to-noise ratio, and contrast-to-noise ratio were evaluated. Subjective image quality scores were assigned for image contrast, artifact, and conspicuity of major structures. Results: CTcorrect showed significantly reduced stair-step artifact (mean coefficient of variance: CTorigin 7.35 +/- 2.0 vs CTcorrect 5.17 +/- 2.4, P < 0.001) and image noise and improved signal-to-noise ratio and contrast-to-noise ratio in the aorta, pulmonary artery, and liver, compared with those of CTorigin (P < 0.01). On subjective analysis, CTcorrect had higher image contrast, lower artifact, and better conspicuity than CTorigin. Most results of the external validation were consistent with those obtained from the internal validation, except for those concerning the pulmonary artery. Conclusions: Deep learning-based artifact correction significantly improved the image quality of coronal reformation chest CT by reducing image noise and artifacts. | Kang, Eun-Ju; Park, Hyoung Suk; Jeon, Kiwan; Lee, Ji Won; Lim, Jae-Kwang | Dong A Univ, Coll Med, Dept Radiol, 1,3 Ga Dongdaesin Dong, Busan 49201, South Korea; Natl Inst Math Sci, Div Med Math, Daejeon, South Korea; Pusan Natl Univ, Sch Med, Pusan Natl Univ Hosp, Dept Radiol, Busan, South Korea; Med Res Inst, Busan, South Korea; Kyungpook Natl Univ, Sch Med, Dept Radiol, Daegu, South Korea | Lee, Jiwon/CAJ-1171-2022; Kang, Eun-Ju/N-7376-2015 | 8395421600; 55946430300; 15831595800; 25936568300; 55515341400 | medcarrot@dau.ac.kr; | JOURNAL OF COMPUTER ASSISTED TOMOGRAPHY | J COMPUT ASSIST TOMO | 0363-8715 | 1532-3145 | 46 | 4 | SCIE | RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING | 2022 | 1.3 | 89.3 | 0.14 | 2025-06-25 | 1 | 1 | chest; tomography x-ray; image reconstruction; deep learning; artificial intelligence | MOTION-CORRECTION ALGORITHM; ITERATIVE RECONSTRUCTION; IMAGE QUALITY; CT ANGIOGRAPHY; NETWORK | artificial intelligence; chest; deep learning; image reconstruction; tomography x-ray | Algorithms; Artifacts; Deep Learning; Feasibility Studies; Humans; Image Processing, Computer-Assisted; Radiographic Image Interpretation, Computer-Assisted; Signal-To-Noise Ratio; Tomography, X-Ray Computed; Computerized tomography; Deep learning; Image analysis; Image enhancement; Image quality; Learning algorithms; Signal to noise ratio; Stairs; Artefact correction; Chest; Computed tomography images; Contrast-enhanced; Deep learning; Image noise; Images reconstruction; Images sets; Stair-step; Tomography x-ray; adult; algorithm; aorta; article; artifact reduction; artificial intelligence; computer assisted tomography; contrast enhancement; contrast to noise ratio; controlled study; deep learning; feasibility study; female; human; image artifact; image quality; image reconstruction; liver; major clinical study; male; noise; noise reduction; pulmonary artery; quantitative analysis; signal noise ratio; thorax; validation process; X ray; algorithm; artifact; computer assisted diagnosis; feasibility study; image processing; procedures; x-ray computed tomography; Image reconstruction | English | 2022 | 2022 (JUL-AUG) | 10.1097/rct.0000000000001326 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Spectral dynamic causal modeling of mindfulness, mind-wandering, and resting-state in the triple network using fMRI | Objective Functional connectivity in intrinsic brain networks, namely, the triple network, which includes the salience network, default mode network (DMN) and central executive network (CEN), has been suggested as prominent, major networks involved in human cognition and mental state-mindfulness, mind-wandering and resting-state. Despite the established roles of functional connections within and between intrinsic networks, there has been limited research on the effective connectivity of mindfulness, mind-wandering and resting-state using the triple network, as well as on their direct comparisons. Methods We employed spectral dynamic causal modeling to compare effective connectivity patterns across mindfulness (i.e. attention focused on physical sensations of breathing), mind-wandering (i.e. connecting thoughts) and resting-state (i.e. relaxing while remaining calm and awake) conditions using functional MRI data of healthy subjects who underwent ambulatory training by practicing mindfulness and mind-wandering (N = 59). Results When comparing mindfulness and mindwandering conditions, our analysis results revealed that salience network and CEN interacted depending on mindfulness or mind-wandering. When mindfulness or mind-wandering was compared to resting-state, mindfulness increased the effective connectivity from the left CEN to salience network through DMN, whereas mindwandering increased the effective connectivity from the DMN to right CEN. Conclusion To the best of our knowledge, this is the first study to examine possible differences in effective connectivity patterns among mindfulness, mind-wandering and resting-state using the triple network. We believe that our findings will provide deeper insights into the neural substrates of mindfulness compared to mind-wandering and resting-state. | Kim, Hyun-Chul; Lee, Jong-Hwan | Kyungpook Natl Univ, Dept Artificial Intelligence, 80 Daehak Ro, Daegu 41556, South Korea; Korea Univ, Dept Brain & Cognit Engn, Seoul, South Korea | ; Kim, Leehyung/AAN-6760-2020; Lee, Jong-Hwan/LBH-6241-2024 | 57194876917; 36065360400 | hyunchul_kim@knu.ac.kr; | NEUROREPORT | NEUROREPORT | 0959-4965 | 1473-558X | 33 | 5 | SCIE | NEUROSCIENCES | 2022 | 1.7 | 89.9 | 0.79 | 2025-06-25 | 4 | 7 | central executive network; default mode network; dynamic causal modeling; effective connectivity; fMRI; mindfulness; mind-wandering; resting-state; salience network; triple network | BRAIN; EXPERIENCE; MEDITATION; CORTEX | central executive network; default mode network; dynamic causal modeling; effective connectivity; fMRI; mind-wandering; mindfulness; resting-state; salience network; triple network | Attention; Brain; Brain Mapping; Humans; Magnetic Resonance Imaging; Mindfulness; Nerve Net; article; causal modeling; controlled study; default mode network; executive network; functional magnetic resonance imaging; human; human experiment; major clinical study; mind wandering; mindfulness; salience network; attention; brain; brain mapping; diagnostic imaging; nerve cell network; nuclear magnetic resonance imaging; procedures | English | 2022 | 2022-03-23 | 10.1097/wnr.0000000000001772 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Assessment of variables associated with prolonged admission duration in children with Mycoplasma pneumoniae pneumonia | Introduction: Macrolide-resistant Mycoplasma pneumoniae (MRMP) has become prevalent in children. This study investigated the clinical and laboratory variables of MRMP and macrolide-sensitive M. pneumoniae (MSMP) and identified factors associated with prolonged hospital admission in children. Methods: A prospective multicenter study was conducted in 1063 children <18 years old in July 2018-June 2020. The 454 had a positive M. pneumoniae polymerase chain reaction assay. Results: Most subjects had MRMP (78.4%), and all mutated strains had the A2063G transition. We defined MRMP* (n = 285) as MRMP pneumonia requiring admission and MSMP* (n = 72) as MSMP pneumonia requiring admission. Patients with MRMP pneumonia were older, more likely to have segmental/lobar pneumonia, and had more febrile days than those with MSMP pneumonia. C-reactive protein (CRP), lactate dehydrogenase (LDH), and percentage neutrophils were more strongly associated with MRMP* than MSMP* groups. Percentage neutrophils, CRP, and alanine aminotransferase significantly changed between admission and follow-up measurements in patients with MRMP* (P < 0.05). The duration of admission positively correlated with the number of febrile days after initiation of antibiotic medication and laboratory variables (white blood cell count, CRP, and aspartate aminotransferase [AST]) (P < 0.05). Random forest analysis indicated that the number of febrile days after initiation of antibiotic medication, AST, and percentage neutrophils at admission was over five. Conclusions: This study indicated that children with M. pneumoniae pneumonia with a higher number of febrile days after initiation of antibiotic medication, AST, and percentage neutrophils at admission were more likely to have prolonged admission duration. | Sung, Myongsoon; Roh, Eui Jeong; Lee, Eun Sil; Lee, Ji Young; Kim, Hyo-Bin; Ahn, Youngmin; Eun, Byung Wook; Kim, Ja Kyoung; Kim, Hyoung Young; Jung, Sung-Su; Kim, Minji; Kang, Eun Kyeong; Yang, Eun-Ae; Lee, Soo Jin; Park, Yang; Seo, Ju-Hee; Lee, Eun; Yang, Eun Seok; Cho, Hyung Min; Shin, Meeyong; Chung, Hai Lee; Jang, Yoon Young; Choi, Bong Seok; Kim, Hyeona; Jung, Jin-A; You, Seung Taek; Lee, Mi-Hee; Kim, Jin Tack; Kim, Bong Seong; Hwang, Yoon Ha; Shim, Jung Yeon; Yang, Hyeon-Jong; Han, Man Yong; Yew, Hae Young; Kim, Dong Hyeok; Jeong, Sang Oun; Whang, Kyujam; Lee, Eunjoo; Jeon, You Hoon; Chung, Eun Hee | Soonchunhyang Univ Hosp, Dept Pediat, Gumi, South Korea; Chungnam Natl Univ Hosp, Dept Pediat, Daejeon, South Korea; Hallym Univ, Dept Pediat, Chuncheon Sacred Heart Hosp, Chunchon, South Korea; Inje Univ, Dept Pediat, Sanggye Paik Hosp, Seoul, South Korea; Eulji Univ Hosp, Dept Pediat, Seoul, South Korea; Kangwon Natl Univ, Dept Pediat, Sch Med, Chunchon, South Korea; Pusan Natl Univ, Sch Med, Childrens Hosp, Dept Pediat, Yangsan, South Korea; Chungnam Natl Univ, Coll Med, Chungnam Univ, Dept Pediat,Sejeong Hosp, Sejong, South Korea; Dongguk Univ, Dept Pediat, Ilsan Hosp, Goyang, South Korea; Catholic Univ Korea, Daejeon St Marys Hosp, Coll Med, Dept Pediat, Daejeon, South Korea; Eulji Univ Hosp, Dept Pediat, Daejeon, South Korea; Wonkwang Univ, Dept Pediat, Sch Med, Iksan, South Korea; Dankook Univ, Dept Pediat, Coll Med, Cheonan, South Korea; Chonnam Natl Univ, Sch Med, Dept Pediat, Chonnam Natl Univ Hosp, Gwangju, South Korea; Chosun Univ, Coll Med, Dept Pediat, Chosun Univ Hosp, Gwangju, South Korea; Presbyterian Med Ctr, Dept Pediat, Jeonju, South Korea; Soonchunhyang Univ, Dept Pediat, Bucheon Hosp, Bucheon, South Korea; Daegu Catholic Univ, Dept Pediat, Med Ctr, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Dept Pediat, Daegu, South Korea; Donga A Univ, Dept Pediat, Coll Med, Busan, South Korea; Incheon Med Ctr, Dept Pediat, Incheon, South Korea; Catholic Univ Korea, Uijeongbu St Marys Hosp, Coll Med, Dept Pediat, Uijongbu, South Korea; Univ Ulsan, Dept Pediat, Coll Med, Gangneung Asan Hosp, Kangnung, South Korea; Busan ST Marys Hosp, Dept Pediat, Busan, South Korea; Sungkyunkwan Univ, Kangbuk Samsung Hosp, Dept Pediat, Sch Med, Seoul, South Korea; Soonchunhyang Univ Hosp, Dept Pediat, Seoul, South Korea; CHA Univ, CHA Bundang Med Ctr, Dept Pediat, Sch Med, Seongnam, South Korea; Kogel Hosp, Dept Pediat, Daejeon, South Korea; Korea Dis Control & Prevent Agcy KDCA, Bur Infect Dis Diag Control, Div Bacterial Dis, Sejong, South Korea; Inje Univ, Dept Pediat, Haeundae Paik Hosp, Busan, South Korea; Hallym Univ, Dept Pediat, Dongtan Sacred Heart Hosp, Hwasung, South Korea; Chungnam Natl Univ, Dept Pediat, Coll Med, 282 Munhwa Ro, Daejeon 35015, South Korea | Lee, Ha/ABF-6005-2020; kim, jeeyoung/AFK-5620-2022; Lee, Min Young/GMX-1345-2022; Kim, Min-Hyuk/ITV-2946-2023; Eun, Byungwook/NAZ-8644-2025; Lee, Soo/ABA-5444-2020; Chung, Eunhee/AAX-6863-2020; Lee, Hoan/J-5616-2012; Kim, Ju-Hyoung/N-1450-2019 | 57191221568; 57218885323; 57560987500; 57144743100; 57191720302; 56735321800; 12762260900; 7601384283; 59051653300; 57202732881; 56984405900; 55485131500; 55607660500; 57203597389; 57192714127; 22981399000; 58678989600; 36764244300; 59036050700; 8063810800; 7404006674; 57194429050; 56547873100; 59865310700; 7402897005; 57778145200; 56903238400; 35201365200; 35210645200; 57212011693; 7201856163; 15053595400; 16301607700; 57559889700; 57560987600; 57918997800; 57779501400; 57207364950; 26537543200; 35975693800 | jy7.shim@samsung.com;ehchung@cnu.ac.kr; | CLINICAL RESPIRATORY JOURNAL | CLIN RESPIR J | 1752-6981 | 1752-699X | 16 | 11 | SCIE | RESPIRATORY SYSTEM | 2022 | 1.7 | 90.2 | 1.2 | 2025-06-25 | 12 | 12 | aspartate aminotransferase; children; M. pneumoniae; macrolide-resistant M. pneumoniae; neutrophil portion | COMMUNITY-ACQUIRED PNEUMONIA; MACROLIDE RESISTANCE; INFECTIONS; THERAPY | aspartate aminotransferase; children; M. pneumoniae; macrolide-resistant M. pneumoniae; neutrophil portion | Adolescent; Anti-Bacterial Agents; C-Reactive Protein; Child; Drug Resistance, Bacterial; Humans; Macrolides; Mycoplasma pneumoniae; Pneumonia, Mycoplasma; Prospective Studies; alanine aminotransferase; aspartate aminotransferase; beta lactam; C reactive protein; cephalosporin; lactate dehydrogenase; quinolone; RNA 23S; tetracycline; antiinfective agent; C reactive protein; macrolide; antibiotic resistance; Article; child; controlled study; DNA extraction; female; fever; follow up; gene amplification; gene mutation; hospital admission; hospitalization; human; hypoxia; leukocyte count; macrolide resistance; major clinical study; male; medical record; Mycoplasma pneumonia; Mycoplasma pneumoniae; neutrophil; pleura effusion; pneumonia; point mutation; polymerase chain reaction; preschool child; prospective study; school child; adolescent; clinical trial; genetics; multicenter study | English | 2022 | 2022-11 | 10.1111/crj.13549 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | An Empirical Study on Rule Violation History of JavaScript Code Blocks on Stack Overflow | JavaScript code blocks on Stack Overflow (SO) are often used in software projects. However, little is known about the issue of rule violation risk in SO JavaScript code blocks. Rule violation is one of the factors which degrades the quality of Java Script code. To prevent prevalence of rule violation by reusing SO JavaScript code blocks, it is needed to investigate how secure SO JavaScript code blocks are against rule violation. To examine the issue, we performed a quantitative analysis to investigate how many rule violations are, when first rule violation occurs and what is the trend of rule violations in evolution history of Stack Overflow JavaScript code blocks. We collected SO posts related to JavaScript and extracted the code blocks contained in the posts. By using ESLint, the most popular rule violation detection tool, we identified rule violations in the evolution history of our target code blocks. We then performed quantitative analyses on the identified rule violations. As the results of the analyses, we found that: (1) 60% of the studied code blocks evolve with any rule violations. (2) In the rule violated code blocks, 92% of the code blocks get first rule violation occurrence in the early phase of their evolution. (3) 80% of the rule violated code blocks never fix existing rule violations during their evolution. Our findings suggest that SO should provide a policy which can reduce rule violations in submitted JavaScript code blocks. The findings can also make SO users attend to rule violations when reusing SO JavaScript code blocks. | Kim, Jungil; Lee, Eunjoo | Kyungpook Natl Univ, Res Ctr, Dept Software Technol, Daegu 41566, South Korea; Kyungpook Natl Univ, Sch Comp Sci & Engn, Daegu 41566, South Korea | 55560317100; 23388933500 | 2009307043@knu.ac.kr;helloejlee@gmail.com; | INTERNATIONAL JOURNAL OF SOFTWARE ENGINEERING AND KNOWLEDGE ENGINEERING | INT J SOFTW ENG KNOW | 0218-1940 | 1793-6403 | 32 | 05 | SCIE | COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE;COMPUTER SCIENCE, SOFTWARE ENGINEERING;ENGINEERING, ELECTRICAL & ELECTRONIC | 2022 | 0.9 | 90.4 | 0.07 | 2025-06-25 | 1 | 1 | Software engineering; stack overflow; JavaScript code block; rule violation; evolution analysis | DEVELOPERS USE; STACKOVERFLOW | evolution analysis; JavaScript code block; rule violation; Software engineering; stack overflow | Codes (symbols); Software engineering; Code blocks; Empirical studies; Evolution analysis; Evolution history; Java scripts; Javascript; Javascript code block; Rule violation; Software project; Stack overflow; High level languages | English | 2022 | 2022-05 | 10.1142/s0218194022500310 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Carbonization of polymer sheets using UV diode laser in N2 atmospheric condition | We investigated the carbonization process of polymer sheets such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polyimide (PI) using an UV diode laser in N-2 atmospheric condition, and proposed the carbonization mechanism. After the laser treatment, oxygen and nitrogen-related products in polymer sheets remarkably decreased, and carbon phase appeared in the sheets. This implied that the laser treatment using UV diode laser was an effective technique for polymer carbonization. Thus, it was concluded that the laser-treated process was expected to modify and control the properties of polymer sheet for various applications. | Lee, Sung-Youp; Kim, Hong Tak | Kyungpook Natl Univ, Dept Phys, Daegu, South Korea; Yeungnam Univ, Sch Chem Engn, Gyongsan 31566, South Korea | 14830491400; 7410138212 | zam89blue@gmail.com; | MOLECULAR CRYSTALS AND LIQUID CRYSTALS | MOL CRYST LIQ CRYST | 1542-1406 | 1563-5287 | 735 | 1 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;CRYSTALLOGRAPHY;MATERIALS SCIENCE, MULTIDISCIPLINARY | 2022 | 0.7 | 90.4 | 0.15 | 2025-06-25 | 1 | 2 | carbonization; polymer sheet; UV diode laser; laser treatment; thermal treatment | XPS | carbonization; laser treatment; polymer sheet; thermal treatment; UV diode laser | Aliphatic compounds; Carbonization; Diodes; Plastic bottles; Polyethylene terephthalates; Polymers; Semiconductor lasers; Atmospheric conditions; Carbonization mechanism; Carbonization process; Laser treatment; Oxygen and nitrogens; Polyethylene naphthalate; Polyethylene terephthalates (PET); Related products; Ultraviolet lasers | English | 2022 | 2022-03-04 | 10.1080/15421406.2021.1972223 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Characteristics of polyaniline nanoparticles prepared by electrochemical solution plasma process for flexible devices | This paper systematically investigates the characteristics of polyaniline (PANI) nanoparticles (NPs) synthesized by an electrochemical solution plasma process (SPP) method in terms of various case studies such as gas flow rates, synthesis times, and post-heating temperatures. The FE-SEM and XRD results show that PANI NPs have spherical particles with a nanoscale and crystalline phases of PANI NPs show amorphous nature with the (020) and (200) crystallographic planes. In FT-IR and XPS spectra, several peaks are observed in PANI NPs powders, which are related to carbon-containing groups and nitrogen-containing groups due to PANI polymer units. | Jung, Eun Young; Park, Choon-Sang; Shin, Jun-Goo; Jang, Hyo Jun; Bae, Gyu Tae; Shin, Bhum Jae; Tae, Heung-Sik | Kyungpook Natl Univ, Coll IT Engn, Sch Elect & Elect Engn, Daegu 41566, South Korea; Kansas State Univ, Coll Engn, Dept Elect & Comp Engn, Manhattan, KS 66506 USA; Sejong Univ, Dept Elect Engn, Seoul 05006, South Korea; Kyungpook Natl Univ, Coll IT Engn, Sch Elect Engn, Daegu 41566, South Korea | Shin, BhumJae/AEV-2572-2022 | 57203199724; 16025295400; 57202231746; 57207956623; 57202369078; 7103027782; 7006298844 | hstae@ee.knu.ac.kr; | MOLECULAR CRYSTALS AND LIQUID CRYSTALS | MOL CRYST LIQ CRYST | 1542-1406 | 1563-5287 | 733 | 1 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;CRYSTALLOGRAPHY;MATERIALS SCIENCE, MULTIDISCIPLINARY | 2022 | 0.7 | 90.4 | 0.15 | 2025-06-25 | 2 | 2 | Electrochemical solution plasma process (SPP); flexible devices; gas flow rates; polyaniline nanoparticles (PANI NPs); post-heating temperatures; synthesis times | NANOCOMPOSITE; GRAPHENE; FILMS | Electrochemical solution plasma process (SPP); flexible devices; gas flow rates; polyaniline nanoparticles (PANI NPs); post-heating temperatures; synthesis times | Chlorine containing polymers; Flow of gases; Nanoparticles; Polyaniline; Carbon containing; Crystalline phasis; Crystallographic plane; Electrochemical solutions; Flexible device; Heating temperatures; Polyaniline nanoparticles; Spherical particle; Synthesis (chemical) | English | 2022 | 2022-06-21 | 10.1080/15421406.2021.1972206 | 바로가기 | 바로가기 | 바로가기 | 바로가기 |
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