129 results on '"Sung-Woo Hong"'
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2. Publisher Correction: Analysis of the serial circulating tumor cell count during neoadjuvant chemotherapy in breast cancer patients
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Sungchan Gwark, Jisun Kim, Nak-Jung Kwon, Kyoung-Yeon Kim, YongNam Kim, Cham Han Lee, Young Hun Kim, Myoung Shin Kim, Sung Woo Hong, Mi Young Choi, Byung Hee Jeon, Suhwan Chang, Jonghan Yu, Ji Yeon Park, Hee Jin Lee, Sae Byul Lee, Il Yong Chung, Beom Seok Ko, Hee Jeong Kim, Jong Won Lee, Byung Ho Son, Jin-Hee Ahn, Kyung Hae Jung, Sung-Bae Kim, Gyung-Yub Gong, and Sei Hyun Ahn
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Medicine ,Science - Abstract
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
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- 2021
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3. Elk-3 Contributes to the Progression of Liver Fibrosis by Regulating the Epithelial-Mesenchymal Transition
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Tian Zhu Li, Sung Min Kim, Wonhee Hur, Jung Eun Choi, Jung-Hee Kim, Sung Woo Hong, Eun Byul Lee, Joon Ho Lee, and Seung Kew Yoon
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epithelial-mesenchymal transition ,elk-3 ,liver cirrhosis ,early growth response-1 ,mapk pathway ,Diseases of the digestive system. Gastroenterology ,RC799-869 - Abstract
Background/AimsThe role of Elk-3 in the epithelial-mesenchymal transition (EMT) during liver fibrogenesis remains unclear. Here, we determined the expression of Elk-3 in in vitro and in vivo models and in human liver fibrotic tissues. We also investigated the molecular relationships among Elk-3, early growth response-1 (Egr-1), and the mitogen activated protein kinases (MAPK) pathway during EMT in hepatocytes.Methods : We established anin vitro EMT model in which normal mouse hepatocyte cell lines were treated with transforming growth factor (TGF)-β1 and a CCl4-induced liver fibrosis model. Characteristics of EMT were determined by evaluating the expression levels of related markers. The expression of Elk-3 and its target Egr-1 were analyzed using Western blotting. Gene silencing of Elk-3 was performed using an siRNA knockdown system.Results : The expression levels of mesenchymal markers were increased during TGF-β1-induced EMT of hepatocytes. The expression levels of Elk-3 and Egr-1 were significantly (p
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- 2017
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4. Supplementary Figure 1 from Temporal Dissection of Tumorigenesis in Primary Cancers
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Raymond J. Cho, Paul T. Spellman, Joe W. Gray, Sarah T. Arron, Lars Bolund, Jian Li, Elizabeth Purdom, Haiyan Huang, Jon C. Aster, Kristian Cibulskis, Gad Getz, Philip E. LeBoit, Pui-Yan Kwok, James E. Cleaver, Theodora M. Mauro, Roy C. Grekin, Siegrid S. Yu, Isaac M. Neuhaus, Nam Huh, Joe S. Hur, Sung-woo Hong, Kyunghee Park, Catherine Chu, Ernest T. Lam, Sai-Wing Chan, Jennifer Pons, Eric A. Collisson, Lakshmi R. Jakkula, Wilson Liao, Nicholas J. Wang, Christine Ho, and Steffen Durinck
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Supplementary Figure 1 from Temporal Dissection of Tumorigenesis in Primary Cancers
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- 2023
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5. Supplementary Figure 2 from Temporal Dissection of Tumorigenesis in Primary Cancers
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Raymond J. Cho, Paul T. Spellman, Joe W. Gray, Sarah T. Arron, Lars Bolund, Jian Li, Elizabeth Purdom, Haiyan Huang, Jon C. Aster, Kristian Cibulskis, Gad Getz, Philip E. LeBoit, Pui-Yan Kwok, James E. Cleaver, Theodora M. Mauro, Roy C. Grekin, Siegrid S. Yu, Isaac M. Neuhaus, Nam Huh, Joe S. Hur, Sung-woo Hong, Kyunghee Park, Catherine Chu, Ernest T. Lam, Sai-Wing Chan, Jennifer Pons, Eric A. Collisson, Lakshmi R. Jakkula, Wilson Liao, Nicholas J. Wang, Christine Ho, and Steffen Durinck
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Supplementary Figure 2 from Temporal Dissection of Tumorigenesis in Primary Cancers
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- 2023
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6. Supplementary Figure Legends 1-4, Methods from Temporal Dissection of Tumorigenesis in Primary Cancers
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Raymond J. Cho, Paul T. Spellman, Joe W. Gray, Sarah T. Arron, Lars Bolund, Jian Li, Elizabeth Purdom, Haiyan Huang, Jon C. Aster, Kristian Cibulskis, Gad Getz, Philip E. LeBoit, Pui-Yan Kwok, James E. Cleaver, Theodora M. Mauro, Roy C. Grekin, Siegrid S. Yu, Isaac M. Neuhaus, Nam Huh, Joe S. Hur, Sung-woo Hong, Kyunghee Park, Catherine Chu, Ernest T. Lam, Sai-Wing Chan, Jennifer Pons, Eric A. Collisson, Lakshmi R. Jakkula, Wilson Liao, Nicholas J. Wang, Christine Ho, and Steffen Durinck
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Supplementary Figure Legends 1-4, Methods from Temporal Dissection of Tumorigenesis in Primary Cancers
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- 2023
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7. Supplementary Table 2 from Temporal Dissection of Tumorigenesis in Primary Cancers
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Raymond J. Cho, Paul T. Spellman, Joe W. Gray, Sarah T. Arron, Lars Bolund, Jian Li, Elizabeth Purdom, Haiyan Huang, Jon C. Aster, Kristian Cibulskis, Gad Getz, Philip E. LeBoit, Pui-Yan Kwok, James E. Cleaver, Theodora M. Mauro, Roy C. Grekin, Siegrid S. Yu, Isaac M. Neuhaus, Nam Huh, Joe S. Hur, Sung-woo Hong, Kyunghee Park, Catherine Chu, Ernest T. Lam, Sai-Wing Chan, Jennifer Pons, Eric A. Collisson, Lakshmi R. Jakkula, Wilson Liao, Nicholas J. Wang, Christine Ho, and Steffen Durinck
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Supplementary Table 2 from Temporal Dissection of Tumorigenesis in Primary Cancers
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- 2023
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8. Supplementary Figure 3 from Temporal Dissection of Tumorigenesis in Primary Cancers
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Raymond J. Cho, Paul T. Spellman, Joe W. Gray, Sarah T. Arron, Lars Bolund, Jian Li, Elizabeth Purdom, Haiyan Huang, Jon C. Aster, Kristian Cibulskis, Gad Getz, Philip E. LeBoit, Pui-Yan Kwok, James E. Cleaver, Theodora M. Mauro, Roy C. Grekin, Siegrid S. Yu, Isaac M. Neuhaus, Nam Huh, Joe S. Hur, Sung-woo Hong, Kyunghee Park, Catherine Chu, Ernest T. Lam, Sai-Wing Chan, Jennifer Pons, Eric A. Collisson, Lakshmi R. Jakkula, Wilson Liao, Nicholas J. Wang, Christine Ho, and Steffen Durinck
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Supplementary Figure 3 from Temporal Dissection of Tumorigenesis in Primary Cancers
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- 2023
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9. Supplementary Figure 4 from Temporal Dissection of Tumorigenesis in Primary Cancers
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Raymond J. Cho, Paul T. Spellman, Joe W. Gray, Sarah T. Arron, Lars Bolund, Jian Li, Elizabeth Purdom, Haiyan Huang, Jon C. Aster, Kristian Cibulskis, Gad Getz, Philip E. LeBoit, Pui-Yan Kwok, James E. Cleaver, Theodora M. Mauro, Roy C. Grekin, Siegrid S. Yu, Isaac M. Neuhaus, Nam Huh, Joe S. Hur, Sung-woo Hong, Kyunghee Park, Catherine Chu, Ernest T. Lam, Sai-Wing Chan, Jennifer Pons, Eric A. Collisson, Lakshmi R. Jakkula, Wilson Liao, Nicholas J. Wang, Christine Ho, and Steffen Durinck
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Supplementary Figure 4 from Temporal Dissection of Tumorigenesis in Primary Cancers
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- 2023
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10. Supplementary Table 1 from Temporal Dissection of Tumorigenesis in Primary Cancers
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Raymond J. Cho, Paul T. Spellman, Joe W. Gray, Sarah T. Arron, Lars Bolund, Jian Li, Elizabeth Purdom, Haiyan Huang, Jon C. Aster, Kristian Cibulskis, Gad Getz, Philip E. LeBoit, Pui-Yan Kwok, James E. Cleaver, Theodora M. Mauro, Roy C. Grekin, Siegrid S. Yu, Isaac M. Neuhaus, Nam Huh, Joe S. Hur, Sung-woo Hong, Kyunghee Park, Catherine Chu, Ernest T. Lam, Sai-Wing Chan, Jennifer Pons, Eric A. Collisson, Lakshmi R. Jakkula, Wilson Liao, Nicholas J. Wang, Christine Ho, and Steffen Durinck
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Supplementary Table 1 from Temporal Dissection of Tumorigenesis in Primary Cancers
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- 2023
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11. Clinical and radiological outcomes of arthroscopic en bloc repair for delaminated rotator cuff tear versus non-delaminated tear
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Jae Woo Shim, Sung Woo Hong, Yong Bok Park, Sang Min Lee, and Jae Chul Yoo
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Orthopedic surgery ,RD701-811 - Abstract
Purpose: The objective of the study is to determine clinical and radiological outcomes of arthroscopic repair for delaminated tears versus non-delaminated tears. Methods: Consecutive 138 patients with full-thickness rotator cuff tear were retrospectively enrolled. They were divided into two groups based on the presence of delamination. All delaminated tears were repaired by en bloc technique (suturing both layers by single stitch). Delaminated tears were categorized into two types: (1) posterior type, delamination involving mainly infraspinatus and (2) complete type, delamination involving both supraspinatus and infraspinatus. Clinical assessments were done using pain visual analog scale (PVAS), functional VAS, American Shoulder Elbow Surgeons score, the Constant score, and range of motion. Postoperative MRI was performed at 6 months after surgery to determine repair integrity. Results: Of the 138 patients, 78 (56.5%) had delaminated tears, including 30 cases of posterior type and 48 cases of complete type. The retear rate was 6.7% (4/60) in the non-delamination group and 5.1% (4/78) in the delamination group, showing no significant difference between the two groups. There was no significant difference in Sugaya classification between the two groups. Clinical scores were improved significantly in both delamination and non-delamination groups postoperatively, showing no significant difference between the two groups. Delamination subgroup (posterior or complete type) showed no significant correlation with retear rate, Sugaya classification, or clinical outcome. Conclusions: Arthroscopic en bloc repair for delaminated rotator cuff tear showed no significant difference in clinical or radiological outcome from that for non-delaminated rotator cuff tear. The extent of delamination did not affect outcome either. Levels of Evidence: Level III, Retrospective comparative study.
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- 2019
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12. Clinical and structural outcome of intra-articular steroid injection for early stiffness after arthroscopic rotator cuff repair
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Su Cheol Kim, Il Su Kim, Sang Soo Shin, Sung Woo Hong, Sang Hyeon Lee, and Jae Chul Yoo
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Arthroscopy ,Rotator Cuff ,Treatment Outcome ,Shoulder Joint ,Humans ,Orthopedics and Sports Medicine ,Surgery ,Range of Motion, Articular ,Magnetic Resonance Imaging ,Injections, Intra-Articular ,Retrospective Studies ,Rotator Cuff Injuries - Abstract
Direct comparative results of patients with early stiffness after arthroscopic rotator cuff repair (ARCR) with and without steroid injection are still unclear. This study aimed to evaluate the clinical and structural effect of intra-articular steroid injection for early stiffness after ARCR.From 2011 and 2016, a total of 417 patients who underwent ARCR for less than medium-sized tears with 35.8 ± 22.6 months follow-up were retrospectively analyzed. Patients with shoulder stiffness [forward flexion (FF) 120˚] or pain at 2 months after ARCR were performed intra-articular steroid injection, and four groups were established [+ stiffness/ + injection (SI, 158 patients), + stiffness/-injection (SNI, 92 patients), -stiffness/ + injection (NSI, 33 patients), and -stiffness/-injection (NSNI, 134 patients)]. Shoulder range-of-motion (ROM) and functional score changes for over two years were analyzed, and six month tendon integrity were evaluated using magnetic resonance imaging.Comparing SI and SNI group, ROM (except internal rotation) and functional score changes did not differ during the early period (2-6 and 2-12 months). However, comparing whether steroid injected (SI/NSI) or not (SNI/NSNI), the formers showed significantly higher improvement of both ROM and functional scores during the early and late period (2-24 months). A six month tendon integrity was not different across four groups and whether steroid injected or not.Intra-articular steroid injections do not appear to have a short-term clinical improving effect by comparing patients with stiff shoulders after ARCR with and without steroid injections. However, intra-articular steroid injection at two months after ARCR did not affect the tendon integrity at post-operative six months.
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- 2022
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13. Highly Self-Healable Polymeric Coating Materials with Enhanced Mechanical Properties Based on the Charge Transfer Complex
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Chanjae Ahn, Pyong Hwa Hong, Juhen Lee, Jinsil Kim, Gyeongmin Moon, Sungkoo Lee, In Park, Haksoo Han, and Sung Woo Hong
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polymer ,coating material ,self-healing ,engineering plastic ,charge transfer complex ,trade-off ,Polymers and Plastics ,General Chemistry - Abstract
Polymeric coating materials (PCMs) are promising candidates for developing next-generation flexible displays. However, PCMs are frequently subjected to external stimuli, making them highly susceptible to repeated damage. Therefore, in this study, a highly self-healing PCM based on a charge transfer complex (CTC) was developed, and its thermal, self-healing, and mechanical properties were examined. The self-healing material demonstrated improved thermal stability, fast self-healing kinetics (1 min), and a high self-healing efficiency (98.1%) via CTC-induced multiple interactions between the polymeric chains. In addition, it eliminated the trade-off between the mechanical strength and self-healing capability that is experienced by typical self-healing materials. The developed PCM achieved excellent self-healing and superior bulk (in-plane) and surface (out-of-plane) mechanical strengths compared to those of conventional engineering plastics such as polyether ether ketone (PEEK), polysulfone (PSU), and polyethersulfone (PES). These remarkable properties are attributed to the unique intermolecular structure resulting from strong CTC interactions. A mechanism for the improved self-healing and mechanical properties was also proposed by comparing the CTC-based self-healing PCMs with a non-CTC-based PCM.
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- 2022
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14. The Dilemma among Irrationality of Poverty-Suffering of the Poor-Existence of Transcendent God: On the Focus of Jon Sobrino’s Theodicy
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Tak Jang Han and Sung Woo Hong
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Dilemma ,Focus (computing) ,Poverty ,Theodicy ,Materials Chemistry ,Irrationality ,Sociology ,Positive economics - Published
- 2021
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15. Carborane Reinforced PS-b-P2VP Block Copolymer Nanopatterns
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Sung Woo Hong and Hong Kyoon Choi
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Crystallography ,Materials science ,Polymers and Plastics ,General Chemical Engineering ,Materials Chemistry ,Copolymer ,Carborane ,Etching selectivity - Abstract
블록공중합체를 이용한 저비용, 고효율 나노패턴 제조 기술은 다양한 분야에 활용성을 가지고 활발히 연구되고 있다. Polystyrenre-b-poly(2-vinyl pyridine)(PS-b-P2VP) 블록공중합체는 패턴 정렬의 용이성, 대면적 배향 가능, 금속 치환 가능 등의 장점으로 범용적으로 사용되는 블록공중합체이지만 유기물로만 구성되어 있기에 패턴 전사에 필요한 식각 선택도(etching selectivity)가 부족한 한계를 가지고 있다. 본 연구에서는 간단한 공정으로 carborane 화합물을 PS-b-P2VP의 P2VP 블록에 선택적으로 도입시킬 수 있는 방법을 제시하여 P2VP 블록의 식각 저항성을 크게 향상시킬 수 있음을 보였다. 이 연구 결과는 유기물로만 이루어진 대부분의 블록공중합체의 낮은 식각 선택도 문제를 극복하는데 중요한 단서를 제공해 줄 수 있을 것이며 향후 블록공중합체의 다양한 나노 패턴 주형으로서의 활용성을 더욱 넓힐 수 있을 것으로 기대한다.
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- 2021
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16. Analysis of the serial circulating tumor cell count during neoadjuvant chemotherapy in breast cancer patients
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Gyungyub Gong, Byung Hee Jeon, Kyoung-Yeon Kim, Sei Hyun Ahn, YongNam Kim, Hee Jin Lee, Cham Han Lee, Il Yong Chung, Sung-chan Gwark, Mi Young Choi, Myoung Shin Kim, Ji Yeon Park, Jong Won Lee, Jisun Kim, Sae Byul Lee, Young Hun Kim, Kyung Hae Jung, Jin-Hee Ahn, Nak-Jung Kwon, Byung Ho Son, Suhwan Chang, Jonghan Yu, Sung Bae Kim, Hee Jeong Kim, Sung Woo Hong, and Beom Seok Ko
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0301 basic medicine ,Oncology ,medicine.medical_specialty ,Treatment response ,medicine.medical_treatment ,lcsh:Medicine ,Circulating Tumor Cell Count ,Article ,Tumour biomarkers ,03 medical and health sciences ,Breast cancer ,0302 clinical medicine ,Circulating tumor cell ,Internal medicine ,Biopsy ,parasitic diseases ,medicine ,skin and connective tissue diseases ,lcsh:Science ,Complete response ,Chemotherapy ,Multidisciplinary ,medicine.diagnostic_test ,business.industry ,lcsh:R ,medicine.disease ,030104 developmental biology ,030220 oncology & carcinogenesis ,Cohort ,lcsh:Q ,business - Abstract
We evaluated the prognostic implications of the circulating tumor cell (CTC) count in non-metastatic, HER2-negative breast cancer patients who failed to achieve pathologic complete response (pCR) after neoadjuvant chemotherapy (NCT). A total of 173, non-metastatic breast cancer patients treated with NCT were prospectively enrolled. CTCs were obtained from blood drawn pre-NCT and post-NCT using a SMART BIOPSY SYSTEM isolation kit (Cytogen Inc., Seoul, Korea) with immunofluorescence staining. Excluding 26 HER2-positive patients, Relapse-free survival (RFS) and overall survival (OS) related to the CTC count and the association of the CTC count with the treatment response to given therapy were analyzed in 147 HER2-negative patients. Among 147 HER2-negative patients, 28 relapses (19.0%) and 13 deaths (8.8%, all breast cancer-specific) were observed during a median follow-up of 37.3 months. One hundred and seven patients (72.8%) were hormone receptor-positive, and 40 patients (27.2%) had triple-negative breast cancer (TNBC). One or more CTCs were identified in 88 of the 147 patients (59.9%) before NCT and 77 of the 134 patients (52.4%) after NCT. In the entire HER2-negative patient cohort, the initial nodal status was the most significant factor influencing RFS and OS. In TNBC, 11 patients (27.5%) achieved pCR and patients that failed to achieve pCR with ≥ 5 CTCs after NCT, showed worse RFS (HR, 10.66; 95% CI, 1.80–63.07; p = 0.009) and OS (HR, 14.00; 95% CI, 1.26–155.53; p = 0.032). The patients with residual tumor and a high number of the CTCs after NCT displayed the worse outcome. These findings could provide justification to launch a future, well designed trial with longer follow-up data to obtain regulatory approval for clinical use of the assay, especially for the ER-positive, HER2-negative breast cancer subset.
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- 2020
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17. An Integrative Conceptual Framework of Public-Private from the Perspectives of the Hundred Schools of Thought (諸子百家)
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홍성우 ( Sung-woo Hong ) and 배수호 ( Suho Bae )
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General Earth and Planetary Sciences ,General Environmental Science - Abstract
이 연구는 오늘날 우리 사회의 공공성 위기 현상은 공(公)과 사(私) 개념이 혼란스럽게 뒤엉키면서 나타난 개념적 혼란에 일정 부분 기인한다는 문제의식에서 출발한다. 과거 서세동점의 시기에 서양 사상에서 ‘public’과 ‘private’가 동양 사회에서 오랫동안 사용되던 ‘공’, ‘사’로 단순 번역되면서 많은 오해와 혼란을 불러일으켰던 것이다. 이 연구에서는 공사관(公私觀)에 대한 개념적 혼란을 극복하고 공공성을 올바르게 이해하기 위해서 공과 사 개념을 두 차원, 즉 윤리·도덕적 차원과 영역·대립적 차원으로 구분하여 4개 사분면으로 접근할 것을 제안한다. 이 두 차원에서 공사관의 통합적 개념틀을 탐색하게 되면, 공과 사 개념은 1 사분면(公, 人), 2 사분면(公, 己), 3 사분면(私, 己), 4 사분면(私, 人)으로 세분화할 수 있어 공과 사 개념에 대한 이해도를 높이고 공공성에 대한 접근과 이해 제고에도 기여할 수 있으리라 본다. 즉, 여기서 공공성은 ‘공적 영역과 사적 영역 모두에서 윤리·도덕적 정당성이 온전하게 확보되고 실현된 상태’라고 정의할 수 있다.
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- 2020
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18. Highly Self-Healable Polymeric Blend Synthesized Using Polymeric Glue with Outstanding Mechanical Properties
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Wonsik Eom, Jungsoon Kang, Min Jae Ko, Jinsil Kim, Kiwon Choi, Seoyun Lee, Jae Beom Ahn, Pyong Hwa Hong, Sung Woo Hong, Gyeongmin Moon, and Sungkoo Lee
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Materials science ,Polymers and Plastics ,Organic Chemistry ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,Inorganic Chemistry ,chemistry.chemical_compound ,chemistry ,Chemical engineering ,Materials Chemistry ,Ft ir spectra ,0210 nano-technology ,GLUE ,Self-healing material ,Polyimide ,Polyurethane - Abstract
A highly self-healable polymeric system with enhanced mechanical properties is prepared by blending conventional polyurethane (PU) with functional polyimide (PI). PU and PI synthesized in this stud...
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- 2020
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19. Facile Synthesis of Fluorinated Polysilazanes and Their Durable Icephobicity on Rough Al Surfaces
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Ha Soo Hwang, Tien Lo, Sung Woo Hong, and In Park
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fluorinated polysilazane ,QD241-441 ,Polymers and Plastics ,ice adhesion ,Organic chemistry ,anti-icing ,superhydrophobic ,General Chemistry ,freezing delay ,icephobic ,Article - Abstract
Superhydrophobic Al surfaces with excellent durability and anti-icing properties were fabricated by coating dual-scale rough Al substrates with fluorinated polysilazane (FPSZ). Flat Al plates were etched using an acidic solution, followed by immersion in boiling water to generate hierarchical micro-nano structures on their surfaces. The FPSZ coatings were synthesized by grafting 1H,1H,2H,2H-perfluorodecyltrimethoxysilane (FAS-17), a fluoroalkyl silane), onto methylpolysilazane, an organopolysilazane (OPSZ) backbone. The high water contact angle (175°) and low sliding angle (1.6°) of the FPSZ-coated sample with an FAS-17 content of 17.3 wt% promoted the efficient removal of a frozen ice column with a low ice adhesion strength of 78 kPa at −20.0 °C (70% relative humidity), which was 4.3 times smaller than that of an OPSZ-coated surface. The FPSZ-coated Al surface suppressed ice nucleation, leading to a decrease in ice nucleation temperature from −19.5 to −21.9 °C and a delay in freezing time from 334 to 4914 s at −19.0 °C compared with the OPSZ-coated Al surface. Moreover, after 40 icing–melting cycles the freezing temperature of a water droplet on the FPSZ-coated Al surface remained unchanged, whereas that on the FAS-17-coated Al surface increased from −22.3 to −20.7 °C. Therefore, the durability of the polymeric FPSZ coating was superior to that of the FAS-17 monolayer coating.
- Published
- 2022
20. The Mediating Effect of Trust in Supervisors in the Relationship between Constructive Performance Feedback and Perceived Fairness of Performance Appraisal
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Geunpil Ryu and Sung-Woo Hong
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Performance feedback ,Performance appraisal ,Public Administration ,Strategy and Management ,0502 economics and business ,05 social sciences ,Applied psychology ,050602 political science & public administration ,Research questions ,Psychology ,Constructive ,050203 business & management ,0506 political science - Abstract
This research addressed two main research questions: (1) Is constructive performance feedback positively related to perceived fairness of performance appraisal? (2) Does trust in supervisors mediat...
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- 2019
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21. 지방분권 인식 정도가 정부간 관계 인식에 미치는 영향 - 분쟁조정제도의 매개효과를 중심으로
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Sung-Woo Hong and Chang-jin Kim
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Political science ,Gender studies - Published
- 2019
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22. A Study on the Effect of Behavior Modeling Factors on Intention to Use Digital Financial Services : Focusing on Information Vulnerable Classes
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Sung-Woo Hong, Seok-Hee Lee, Gwang-Yong Gim, and Jae Hyun Kim
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business.industry ,Advertising ,Intention to use ,business ,Psychology ,Financial services - Abstract
4차 산업혁명 시대는 다양한 금융소비자를 위해 개인화된 금융상품의 제공과 혁신적인 금융서비스로 발전하고 있다. 그러나, 금융 디지털서비스의 다양한 서비스가 확대와 활용이 높아지더라도 금융 소외계층은 더 확대될 수 있다. 본 연구에서는 소비자보호원 정책연구의 실증데이터(2017년)를 활용하여 디지털 금융소외계층을 대상으로 디지털 금융서비스 사용의도에 대한 영향을 도출하고자 한다.
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- 2019
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23. 53‐2: Highly Self‐healable Coating Materials with Improved Mechanical Surface Properties for Flexible Electronic Displays
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Sung Ku Lee and Sung Woo Hong
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Surface (mathematics) ,Materials science ,Coating materials ,engineering.material ,Hardness ,chemistry.chemical_compound ,Coating ,chemistry ,Self-healing ,engineering ,Composite material ,Elastic modulus ,Polyimide ,Polyurethane - Published
- 2019
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24. Comparative Evaluation of the Biodegradability and Wrinkle Reduction Efficacy of Human-Derived Collagen Filler and Hyaluronic Acid Filler
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Sung Woo Hong, Sung Won Han, Jong Hwan Kim, Beom Joon Kim, Tae-Rin Kwon, Jae Min Kim, Ji Yeon Hong, Sung Eun Lee, and Joon Seok
- Subjects
Filler (packaging) ,Injections, Intradermal ,Wrinkle reduction ,030230 surgery ,Comparative evaluation ,Mice ,Random Allocation ,030207 dermatology & venereal diseases ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Dermal Fillers ,Absorbable Implants ,Skin surface ,Hyaluronic acid ,Animals ,Humans ,Medicine ,Hyaluronic Acid ,Wrinkle ,Analysis of Variance ,Mice, Hairless ,business.industry ,Biopsy, Needle ,Biodegradation ,Immunohistochemistry ,Skin Aging ,Disease Models, Animal ,chemistry ,Female ,Surgery ,Collagen ,medicine.symptom ,business ,Skin roughness ,Biomedical engineering - Abstract
The development of fillers for wrinkle prevention is growing to meet rising demands to reduce the aging of skin. In this experiment, we confirmed the effects of human collagen and hyaluronic acid filler biodegradation for wrinkle reduction using a photo-aging mouse model. A total of 10 hairless mice (SKH1-Hrhr) were randomly divided into two groups and injected with hyaluronic acid and human-derived collagen filler. At 0, 2, 4, 8, and 12 weeks, PRIMOSlite®, folliscope, and MRI were used to evaluate the biodegradability of the fillers after the injections. We also studied the photo-aging mouse model for skin roughness and histological evaluation and confirmed that the filler injection had excellent anti-wrinkle effects. Human-derived collagen fillers had excellent biodegradability compared to that of hyaluronic acid fillers. The skin surface roughness in the photo-aging mouse models was significantly reduced after injections of human-derived collagen filler. Our results showed that the human-derived collagen filler had excellent biodegradability and effectively reduced wrinkle formation in a photo-aging mouse model. This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
- Published
- 2019
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25. Does a trough on the anterior glenoid rim make difference in arthroscopic Bankart repair using suture anchors? Mid-term follow-up study
- Author
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Sung Woo Hong and Jae Chul Yoo
- Subjects
Sports medicine ,RC1200-1245 - Published
- 2017
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26. Publisher Correction: Analysis of the serial circulating tumor cell count during neoadjuvant chemotherapy in breast cancer patients
- Author
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Jong Won Lee, Jonghan Yu, Ji Yeon Park, Hee Jeong Kim, Suhwan Chang, Mi Young Choi, Byung Ho Son, Young Hun Kim, Sung Woo Hong, Kyung Hae Jung, Kyoung-Yeon Kim, Sei Hyun Ahn, Hee Jin Lee, Jisun Kim, Il Yong Chung, Sung Bae Kim, YongNam Kim, Nak-Jung Kwon, Beom Seok Ko, Sae Byul Lee, Myoung Shin Kim, Jin-Hee Ahn, Cham Han Lee, Byung Hee Jeon, Sung-chan Gwark, and Gyungyub Gong
- Subjects
Oncology ,Adult ,medicine.medical_specialty ,Neoplasm, Residual ,Receptor, ErbB-2 ,medicine.medical_treatment ,Science ,MEDLINE ,Circulating Tumor Cell Count ,Breast Neoplasms ,Cell Count ,Triple Negative Breast Neoplasms ,Disease-Free Survival ,Text mining ,Breast cancer ,Recurrence ,Internal medicine ,medicine ,Biomarkers, Tumor ,Humans ,Aged ,Chemotherapy ,Multidisciplinary ,business.industry ,Estrogen Receptor alpha ,Middle Aged ,medicine.disease ,Neoplastic Cells, Circulating ,Prognosis ,Publisher Correction ,Neoadjuvant Therapy ,Treatment Outcome ,Microscopy, Fluorescence ,Chemotherapy, Adjuvant ,MCF-7 Cells ,Medicine ,Female ,Neoplasm Recurrence, Local ,business ,Follow-Up Studies - Abstract
We evaluated the prognostic implications of the circulating tumor cell (CTC) count in non-metastatic, HER2-negative breast cancer patients who failed to achieve pathologic complete response (pCR) after neoadjuvant chemotherapy (NCT). A total of 173, non-metastatic breast cancer patients treated with NCT were prospectively enrolled. CTCs were obtained from blood drawn pre-NCT and post-NCT using a SMART BIOPSY SYSTEM isolation kit (Cytogen Inc., Seoul, Korea) with immunofluorescence staining. Excluding 26 HER2-positive patients, Relapse-free survival (RFS) and overall survival (OS) related to the CTC count and the association of the CTC count with the treatment response to given therapy were analyzed in 147 HER2-negative patients. Among 147 HER2-negative patients, 28 relapses (19.0%) and 13 deaths (8.8%, all breast cancer-specific) were observed during a median follow-up of 37.3 months. One hundred and seven patients (72.8%) were hormone receptor-positive, and 40 patients (27.2%) had triple-negative breast cancer (TNBC). One or more CTCs were identified in 88 of the 147 patients (59.9%) before NCT and 77 of the 134 patients (52.4%) after NCT. In the entire HER2-negative patient cohort, the initial nodal status was the most significant factor influencing RFS and OS. In TNBC, 11 patients (27.5%) achieved pCR and patients that failed to achieve pCR with ≥ 5 CTCs after NCT, showed worse RFS (HR, 10.66; 95% CI, 1.80-63.07; p = 0.009) and OS (HR, 14.00; 95% CI, 1.26-155.53; p = 0.032). The patients with residual tumor and a high number of the CTCs after NCT displayed the worse outcome. These findings could provide justification to launch a future, well designed trial with longer follow-up data to obtain regulatory approval for clinical use of the assay, especially for the ER-positive, HER2-negative breast cancer subset.
- Published
- 2021
27. Q: If you could have dinner with any historical or fictional legal figure, who would it be and why?
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TRISKO, CURT, BAKER, TÉA, JOHNSON, KARL, SJOQUIST, GERI, and SUNG WOO HONG
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LEGAL professions ,SUPPERS - Abstract
The article provides answer to a question concerning which historical or fictional legal figure each contributor would choose to have dinner with and why.
- Published
- 2024
28. Discordance Between Apolipoprotein B and Low-Density Lipoprotein Cholesterol and Progression of Coronary Artery Calcification in Middle Age
- Author
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Hocheol Shin, Chan-Won Kim, Yoosoo Chang, Jung Ah Lee, Sung woo Hong, and Seungho Ryu
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Adult ,Male ,medicine.medical_specialty ,Apolipoprotein B ,Coronary Artery Disease ,030204 cardiovascular system & hematology ,Coronary artery disease ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Insulin resistance ,Risk Factors ,Internal medicine ,medicine ,Humans ,030212 general & internal medicine ,Coronary atherosclerosis ,Subclinical infection ,Apolipoproteins B ,biology ,business.industry ,Cholesterol ,nutritional and metabolic diseases ,Calcinosis ,General Medicine ,Cholesterol, LDL ,Middle Aged ,medicine.disease ,Middle age ,chemistry ,Relative risk ,Cardiology ,biology.protein ,Disease Progression ,lipids (amino acids, peptides, and proteins) ,Cardiology and Cardiovascular Medicine ,business - Abstract
BACKGROUND A high level of apolipoprotein B (apoB) is associated with incident coronary artery disease (CAD) when low-density lipoprotein cholesterol (LDL-C) level is discordantly low or concordantly high. However, data on the relationship of apoB with subclinical measure of CAD are limited.Methods and Results:A total of 14,205 men (mean age 41.0 years) who were free of cardiovascular disease at baseline and who underwent a health checkup exam, including measurement of coronary artery calcium (CAC), were studied. Of the study group, 2,773 participants (19.5%) had CAC at baseline, and CAC progression was observed in 2,550 (18.0%). The multivariate-adjusted CAC score ratios (95% confidence interval) comparing discordantly high apoB/low LDL-C and concordantly high apoB/high LDL-C with concordantly low apoB/low LDL-C were 1.51 (0.98-2.32) and 2.70 (2.19-3.33), respectively. The corresponding relative risks for CAC progression were 1.26 (1.02-1.56) and 1.49 (1.34-1.66), respectively. These associations did not change appreciably after adjustment for insulin resistance and subclinical inflammation. CONCLUSIONS Discordant analysis showed that a high apoB level was strongly associated with prevalence and progression of CAC independent of LDL-C in a large cohort of healthy adults. The present study results highlighted the importance of an apoB measure as a potential target for primary prevention of coronary atherosclerosis in healthy adults.
- Published
- 2020
29. A Heterocyclic Polyurethane with Enhanced Self-Healing Efficiency and Outstanding Recovery of Mechanical Properties
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Min Jae Ko, Sungkoo Lee, Jungsoon Kang, Pyong Hwa Hong, Gyeongmin Moon, Kiwon Choi, Seoyun Lee, Sung Woo Hong, Hyun Wook Jung, and Jinsil Kim
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chemistry.chemical_classification ,Materials science ,Polymers and Plastics ,Hydrogen bond ,hydrogen bonding interaction ,Supramolecular chemistry ,General Chemistry ,Isocyanate ,heterocyclic ,Article ,lcsh:QD241-441 ,chemistry.chemical_compound ,lcsh:Organic chemistry ,Polyol ,chemistry ,Heterocyclic compound ,polyurethane ,Self-healing ,flexible display ,Organic chemistry ,self-healing ,Polyurethane - Abstract
A functional polyurethane based on the heterocyclic group was synthesized and its self-healing and mechanical properties were examined. To synthesize a heterocyclic polyurethane, a polyol and a heterocyclic compound with di-hydroxyl groups at both ends were blended and the blended solution was reacted with a crosslinker containing multiple isocyanate groups. The heterocyclic polyurethane demonstrates better self-healing efficiency than the conventional polyurethane with no heterocyclic groups. Furthermore, unlike the conventional self-healing materials, the heterocyclic polyurethane examined in this study shows an outstanding recovery of the mechanical properties after the self-healing process. These results are attributed to the unique supramolecular network resulting from the strong hydrogen bonding interaction between the urethane group and the heterocyclic group in the heterocyclic polyurethane matrix.
- Published
- 2020
30. Highly Transparent, Colorless Optical Film with Outstanding Mechanical Strength and Folding Reliability Using Mismatched Charge‐Transfer Complex Intensification (Adv. Funct. Mater. 20/2022)
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Chanjae Ahn, Tae Yong Kim, Pyong Hwa Hong, Sungwon Choi, Yea‐Jin Lee, Hanui Kwon, Hyeryeon Jeon, Dong Won Ko, In Park, Haksoo Han, and Sung Woo Hong
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Biomaterials ,Electrochemistry ,Condensed Matter Physics ,Electronic, Optical and Magnetic Materials - Published
- 2022
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31. Molecularly Engineered Islet Cell Clusters for Diabetes Mellitus Treatment
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Simmyung Yook, Jee-Heon Jeong, Yoon Suk Jung, Sung Woo Hong, Bok Hyeon Im, Jin Won Seo, Jun Beom Park, Minhyung Lee, Cheol-Hee Ahn, Haeshin Lee, Dong Yun Lee, and Youngro Byun Ph.D.
- Subjects
Medicine - Abstract
Pancreatic islet transplantation is a promising method for curing diabetes mellitus. We proposed in this study a molecularly engineered islet cell clusters (ICCs) that could overcome problems posed by islet transplantation circumstances and host's immune reactions. A gene containing highly releasable exendin-4, an insulinotropic protein, was delivered into single islet cells to enhance glucose sensitivity; thereafter, the cells were reaggregated into small size ICCs. Then the surface of ICCs was modified with biocompatible poly(ethylene glycol)-lipid (PEG) (C18) for preventing immune reactions. The regimen of ICCs with low doses of anti-CD154 mAb and tacrolimus could effectively maintain the normal glucose level in diabetic mice. This molecularly engineered PEG-Sp-Ex-4 ICC regimen prevented cell death in transplantation site, partly through improving the regulation of glucose metabolism and by preventing hypoxia- and immune response-induced apoptosis. Application of this remedy is also potentially far-reaching; one would be to help overcome islet supply shortage due to the limited availability of pancreas donors and reduce the immunosuppressant regimens to eliminate their adverse effects.
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- 2012
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32. Determinants of Disaster Management Budget in Local Autonomies - Focused on Disaster Vulnerability Factors
- Author
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Chang Jin Kim and Sung Woo Hong
- Subjects
Moment (mathematics) ,Livelihood security ,Incrementalism ,Standard error ,Public economics ,Emergency management ,business.industry ,Disaster vulnerability ,General Medicine ,Business ,Endogeneity ,Panel data - Abstract
The purpose of this study is to explore the determinants affecting the disaster management budget, focusing on disaster-vulnerable groups in local autonomies. For this purpose, we analyzed the five-year panel data of 226 local governments in South Korea from 2012 to 2016 using the Panel Corrected Standard Error (PCSE) and Generalized Method of Moment (GMM) methods. The PCSE method showed that the ratio of elderly population and the number of businesses had a positive effect, while the ratio of basic livelihood security recipients and local share tax had a negative effect. However, the GMM method controlling endogeneity revealed that incrementalism was a positive factor but the ratio of elderly population and the ratio of basic livelihood security recipients were found insignificant. These results confirmed that the role of disaster- vulnerable groups as determinants of disaster management budget is unclear for local autonomies in South Korea.
- Published
- 2018
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33. A Study on the Policy Adoption of Local Autonomy by the Policy Attributes
- Author
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sung-woo Hong
- Subjects
Local autonomy ,Public economics ,Business - Published
- 2018
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34. Colonic diverticular perforation by a migrated biliary stent
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Tae Young Park, Sung Woo Hong, Hyoung-Chul Oh, and Jae Hyuk Do
- Subjects
General Medicine - Published
- 2021
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35. A water-triggered highly self-healable elastomer with enhanced mechanical properties achieved using localized zwitterionic assemblies
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Pyong Hwa Hong, Kiwon Choi, Jinsil Kim, Seoyun Lee, Min Jae Ko, Sung Woo Hong, Hee Jeong Park, Young Kyung Kim, Hyeryeon Jeon, Jungsoon Kang, Gyeongmin Moon, and Kiseung Kim
- Subjects
chemistry.chemical_classification ,Materials science ,General Chemical Engineering ,Intermolecular force ,Ionic bonding ,02 engineering and technology ,General Chemistry ,Polymer ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Elastomer ,01 natural sciences ,Industrial and Manufacturing Engineering ,0104 chemical sciences ,Ion ,chemistry.chemical_compound ,chemistry ,Chemical engineering ,Zwitterion ,Self-healing ,Transmittance ,Environmental Chemistry ,0210 nano-technology - Abstract
In this study, the synthesis of a water-triggered highly self-healable elastomer with excellent optical and mechanical properties through localized zwitterionic assemblies is demonstrated for the first time using a newly proposed blending method. The self-healable elastomer obtained by blending conventional polyol and zwitterionic polyol shows a high transmittance (~92%) and low yellow index value (1.9). The fabricated material with localized zwitterionic clusters shows superior self-healing efficiency (94–100%) under both dry and wet conditions compared with conventional nonionic elastomers (~69%) and ionic elastomers with randomly distributed ions (80–87%). This is attributed to the significantly higher probability of contact between the localized zwitterionic assemblies of this material in the damaged area. More importantly, conventional self-healing materials have obtained the self-healing properties of polymers at the expense of their mechanical properties. An elastomer with localized zwitterions eliminates this trade-off between self-healing and mechanical properties. These properties are attributed to the unique intermolecular network resulting from strong interactions between localized zwitterionic clusters. As a result, the zwitterionic self-healable elastomer, based on the blending system proposed in this study, can maximize its self-healing capabilities and overcome the limitations of conventional self-healing materials via the concentration of zwitterions into a local domain.
- Published
- 2021
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36. Developing students’ moral virtues in high school English class: Focused on the analysis of high school English textbooks
- Author
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Hae Sung Sohng and Sung Woo Hong
- Subjects
Class (computer programming) ,Mathematics education ,Psychology - Published
- 2017
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37. Three Phase Current Reconstruction Method of Three Shunt Sensing 3-Phase Inverter by Predictive Current Technique
- Author
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Sung-Woo Hong, Il-Kuen Won, Chung-Yuen Wo, Young-Hee Jang, Do-Yun Kim, and Kyoung-Min Choo
- Subjects
Materials science ,Three-phase ,Control theory ,General Medicine ,Reconstruction method ,Shunt (electrical) - Published
- 2017
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38. Clinical Results after Arthroscopic Treatment of Septic Shoulder with Proximal Bone Involvement
- Author
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Sang Min Lee, Jeung Yeol Jeong, Jae Chul Yoo, Sung Woo Hong, and Jaewoo Shim
- Subjects
030222 orthopedics ,medicine.medical_specialty ,medicine.diagnostic_test ,business.industry ,Osteomyelitis ,Arthroscopy ,Elbow ,030229 sport sciences ,medicine.disease ,Surgery ,03 medical and health sciences ,Diaphysis ,0302 clinical medicine ,medicine.anatomical_structure ,medicine ,Shoulder arthritis ,Orthopedics and Sports Medicine ,Rotator cuff ,Humerus ,Original Article ,Range of motion ,business - Abstract
BACKGROUND: If osteomyelitis is confined to the proximal humerus, arthroscopic debridement with multiple punctures at the infected bone might be sufficient to eradicate the septic shoulder with bone involvement. MATERIALS AND METHODS: From 2005 to 2017, 15 patients received arthroscopic debridement with multiple punctures. We included patients with septic shoulder arthritis with proximal bone involvement and excluded patients with glenohumeral joint destruction or extension of bone involvement to the diaphysis of the humerus. We performed multiple punctures for drainage of proximal humerus after complete arthroscopic debridement of septic soft tissue. Infection laboratory studies and postoperative magnetic resonance image were evaluated. For clinical outcome measurements, range of motion, pain visual analog scale, functional visual analog scale, American shoulder elbow surgeon scores, constant scores, and simple shoulder test were evaluated. RESULTS: There were 11 males and 4 females with a mean age of 53 years (range 28–73 years). Mean follow-up was 32 months (range 12–115 months). There was no reinfection case. The postoperative C-reactive protein levels were normalized in all. The postoperative magnetic resonance image showed no bony involvement of the proximal humerus in all patients except one patient. The clinical scores and range of motion were significantly improved postoperatively. Six patients underwent secondary surgery for rotator cuff tear at a mean time period of 25 months (range 4–104 months) from the index period. CONCLUSION: Septic shoulder with proximal bone involvement can be successfully treated with arthroscopic debridement with multiple punctures. LEVEL OF EVIDENCE: Level IV, treatment study
- Published
- 2020
39. A Variation of Settling Velocities of Kaolinite Cohesive Sediments due to the Existence of Salinity
- Author
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Sung-Woo Hong, Kyu-Nam Hwang, and Dong-Ho Kim
- Subjects
Salinity ,Settling ,Kaolinite ,Soil science ,Variation (astronomy) ,Geomorphology ,Geology - Published
- 2016
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40. What Is the Role of Epidural Steroid Injections in Lumbar Spinal Disease with Moderate Disability?
- Author
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Jae Young Hong, Jae Ho Choi, Seung Woo Suh, Si Young Park, Jung Ho Park, Jae Hyuk Yang, and Sung Woo Hong
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Adult ,Male ,Visual analogue scale ,medicine.medical_treatment ,Injections, Epidural ,Lumbar vertebrae ,Spinal disease ,030218 nuclear medicine & medical imaging ,03 medical and health sciences ,0302 clinical medicine ,Lumbar ,Outcome Assessment, Health Care ,medicine ,Humans ,Prospective Studies ,Radiculopathy ,Prospective cohort study ,Aged ,Lumbar Vertebrae ,Epidural steroid injection ,business.industry ,Middle Aged ,medicine.disease ,Low back pain ,Anesthesiology and Pain Medicine ,medicine.anatomical_structure ,Radicular pain ,Anesthesia ,Female ,Spinal Diseases ,Steroids ,medicine.symptom ,business ,Low Back Pain ,030217 neurology & neurosurgery - Abstract
Epidural steroid injections have been gaining popularity as an alternative to surgical treatment of radicular pain with associated spinal derangement. To determine the effectiveness and indications of lumbar epidural steroid injections in patients with or without surgery, we performed a prospective observational study. We gathered data from 262 degenerative short-segment spinal disease patients (affected at one or 2 levels) with greater than 12 weeks of medication-resistant radicular pain without neurological deficits but with moderate disability (visual analog scale < 6.5; Oswestry Disability Index < 35). All patients received initial fluoroscopically guided transforaminal epidural steroid injections of the affected vertebral level(s) corresponding to their symptoms. Those with inadequate responses or who wanted subsequently surgery underwent decompression surgery. Clinical and demographic characteristics were assessed to compare the differences between the groups. Results: Of the 262 patients who received epidural steroid injections, 204 did not have operations for up to one year. However, 58 patients experienced inadequate relief of pain or wanted operations and therefore underwent surgery. At baseline, the 2 groups had similar mean disability indices and pain scores, as well as gender ratios, ages, and durations of symptoms (P > 0.05). In the patients who underwent surgery, the mean disability and pain scores were not significantly decreased after injection compared to those in the injection-alone group, although the scores for the injection plus surgery patients decreased significantly after surgery (P < 0.05). In contrast, patients who underwent epidural steroid injection alone experienced a significant decrease in disability and pain after injection, and that persisted up to one year of follow-up (P < 0.05). Epidural steroid injection can decrease the pain and disability in the majority of a moderate disability group for up to one year, although a significant number of patients underwent surgery regardless of injection. We recommend epidural steroid injection as a first-line treatment in patients with moderate disability that can be converted to surgery without significant delay. Key words: Epidural steroid injection, spinal surgery, lumbar spinal disease, lumbar radiculopathy, lumbar radicular pain
- Published
- 2016
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41. A Study on the Degradation of Mechanical Properties for the Carbon Composite at a High Temperature and High Humidity of Environment
- Author
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Sung Woo Hong, Lee Ku Kwac, Hong Gun Kim, and Sun Ho Go
- Subjects
Materials science ,chemistry ,Composite number ,chemistry.chemical_element ,Degradation (geology) ,Composite material ,Carbon ,High humidity - Published
- 2016
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42. Role of ADAM17 in invasion and migration of CD133-expressing liver cancer stem cells after irradiation
- Author
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Daehee Hwang, Wonhee Hur, Sung Woo Hong, Jung-Hee Kim, Seung Kew Yoon, and Jung Eun Choi
- Subjects
cancer stem cells ,Male ,0301 basic medicine ,Pathology ,Apoptosis ,migration ,Mice ,chemistry.chemical_compound ,0302 clinical medicine ,Cell Movement ,Tumor Cells, Cultured ,Medicine ,AC133 Antigen ,ADAM17 ,Mice, Inbred BALB C ,Liver Neoplasms ,hepatocellular carcinoma ,radioresistance ,Vascular endothelial growth factor ,Oncology ,030220 oncology & carcinogenesis ,Hepatocellular carcinoma ,Neoplastic Stem Cells ,Stem cell ,Liver cancer ,Research Paper ,Signal Transduction ,medicine.medical_specialty ,Carcinoma, Hepatocellular ,Notch signaling pathway ,Mice, Nude ,ADAM17 Protein ,03 medical and health sciences ,Cancer stem cell ,Radioresistance ,Biomarkers, Tumor ,Cell Adhesion ,Animals ,Humans ,Neoplasm Invasiveness ,neoplasms ,Cell Proliferation ,business.industry ,Cell growth ,medicine.disease ,Xenograft Model Antitumor Assays ,030104 developmental biology ,chemistry ,Gamma Rays ,Cancer research ,business - Abstract
// Sung Woo Hong 1 , Wonhee Hur 1 , Jung Eun Choi 1 , Jung-Hee Kim 1 , Daehee Hwang 2 , Seung Kew Yoon 1 1 The Catholic University Liver Research Center and WHO Collaborating Center of Viral Hepatitis, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea 2 Department of New Biology and Center for Plant Aging Research, Institute for Basic Science, DGIST, Daegu, Republic of Korea Correspondence to: Seung Kew Yoon, e-mail: yoonsk@catholic.ac.kr Keywords: cancer stem cells, hepatocellular carcinoma, radioresistance, ADAM17, migration Received: August 20, 2015 Accepted: February 28, 2016 Published: March 16, 2016 ABSTRACT We investigated the biological role of CD133-expressing liver cancer stem cells (CSCs) enriched after irradiation of Huh7 cells in cell invasion and migration. We also explored whether a disintegrin and metalloproteinase-17 (ADAM17) influences the metastatic potential of CSC-enriched hepatocellular carcinoma (HCC) cells after irradiation. A CD133-expressing Huh7 cell subpopulation showed greater resistance to sublethal irradiation and specifically enhanced cell invasion and migration capabilities. We also demonstrated that the radiation-induced MMP-2 and MMP-9 enzyme activities as well as the secretion of vascular endothelial growth factor were increased more predominantly in Huh7 CD133+ cell subpopulations than Huh7 CD133− cell subpopulations. Furthermore, we showed that silencing ADAM17 significantly inhibited the migration and invasiveness of enriched Huh7 CD133+ cells after irradiation; moreover, Notch signaling was significantly reduced in irradiated CD133-expressing liver CSCs following stable knockdown of the ADAM17 gene. In conclusion, our findings indicate that CD133-expressing liver CSCs have considerable metastatic capabilities after irradiation of HCC cells, and their metastatic capabilities might be maintained by ADAM17. Therefore, suppression of ADAM17 shows promise for improving the efficiency of current radiotherapies and reducing the metastatic potential of liver CSCs during HCC treatment.
- Published
- 2016
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43. Analysis on the Conflicts and Damage by Military Installations in Terms of Environmental Justice: Focusing on the Youngpyeong Firing Range
- Author
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Sung-Woo Hong and Huh Hun
- Subjects
Environmental justice ,Range (biology) ,Political science ,Environmental planning - Published
- 2015
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44. Helicobacter pylori: A Possible Risk Factor for Bone Health
- Author
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Seung Won Oh, Jong Seop Gwak, Cheol Min Lee, Sung Woo Hong, Hyuktae Kwon, Yun Hee Chung, and Jung Hyeon Hyeon
- Subjects
Bone mineral ,medicine.medical_specialty ,Bone density ,biology ,Helicobacter pylori ,business.industry ,Osteoporosis ,medicine.disease ,biology.organism_classification ,Gastroenterology ,medicine.anatomical_structure ,Bone Density ,Internal medicine ,Immunology ,Medicine ,Femur ,Original Article ,Risk factor ,Family Practice ,business ,Body mass index ,Femoral neck - Abstract
Background: Helicobacter pylori (H. pylori) infection may cause systemic inflammation and increase the production of tumor necrosis factor-α, interleukin-1, and interleukin-6. Unfortunately, bone mineral density also may be affected by these cytokines. This study aimed to evaluate the association between bone mineral density and H. pylori infection. Methods: A cross-sectional study evaluated 1,126 men undergoing a comprehensive health screening in a private Korean screening center. Subjects’ sera were tested for H. pylori antibodies (immunoglobulin G) using an enzymelinked immunosorbent assay, and bone mineral densities (g/cm 2 ) of the lumbar spine, femoral neck, and total femur were obtained using dual-energy X-ray absorptiometry. To evaluate the difference in bone mineral density according to H. pylori infection status, the adjusted mean bone mineral densities at each site were compared after adjusting for potential confounders, including age, sex, body mass index, smoking, alcohol consumption, and exercise. Results: H. pylori infection was associated with a significant decrease in mean lumbar bone mineral density (H. pylori-positive, 1.190 g/cm 2 ; H. pylori-negative, 1.219 g/cm 2 ; P = 0.006), which was greatest among men who were ≥ 50 years old (H. pylori-positive, 1.193 g/cm 2 ; H. pylori-negative, 1.233 g/cm 2 ; P = 0.006). However, no significant association was observed in the bone mineral densities of the total femur and femoral neck. Conclusion: In men, H. pylori infection was negatively associated with lumbar bone mineral density. This association may be useful in the early detection, prevention, and management of male osteoporosis.
- Published
- 2015
45. An Analysis on the Procedure of Regulatory Policy to Mobile Handset Subsidies in terms of Policy Network
- Author
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Sung-Woo Hong and Kim Dae Youn
- Subjects
Public economics ,law ,Network security policy ,Subsidy ,Business ,Regulatory policy ,Handset ,Industrial organization ,law.invention - Published
- 2015
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46. A Study on Small Foreign Currency Remittances Based on Block Chain Between South Korea and Vietnam
- Author
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Jae Hyun Kim, Gwang-Yong Gim, Sung-In Jo, and Sung-Woo Hong
- Subjects
Chain (algebraic topology) ,Currency ,Block (telecommunications) ,Financial system ,Business - Published
- 2018
- Full Text
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47. A Study on the Effect of Technological Factors on the Change of Financial branch in the 4th Industrial Revolution
- Author
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Sung-Won Jung, Sung-Woo Hong, Jae Hyun Kim, and Gwang-Yong Gim
- Subjects
Market economy ,Economics ,Industrial Revolution - Published
- 2018
- Full Text
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48. FDG PET–CT for Lymph Node Staging of Bladder Cancer: A Prospective Study of Patients with Extended Pelvic Lymphadenectomy
- Author
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Jun Hyuk Hong, Dalsan You, Choung-Soo Kim, Hanjong Ahn, Sung Woo Hong, and In Gab Jeong
- Subjects
Adult ,Male ,medicine.medical_specialty ,Pathological staging ,medicine.medical_treatment ,Multimodal Imaging ,Metastasis ,Cystectomy ,Fluorodeoxyglucose F18 ,medicine ,Humans ,Neoplasm Invasiveness ,Pelvic Neoplasms ,Prospective Studies ,Lymph node ,Aged ,Neoplasm Staging ,Fluorodeoxyglucose ,Bladder cancer ,medicine.diagnostic_test ,business.industry ,Middle Aged ,Prognosis ,medicine.disease ,Survival Rate ,medicine.anatomical_structure ,Urinary Bladder Neoplasms ,Oncology ,Positron emission tomography ,Lymphatic Metastasis ,Positron-Emission Tomography ,Female ,Surgery ,Lymph Nodes ,Radiology ,Radiopharmaceuticals ,Tomography, X-Ray Computed ,business ,Follow-Up Studies ,medicine.drug - Abstract
The purpose of this study was to evaluate the diagnostic accuracy of [18F] fluorodeoxyglucose (FDG) positron emission tomography–computed tomography (PET–CT) for lymph node (LN) staging of bladder cancer patients undergoing radical cystectomy (RC) with extended pelvic lymphadenectomy compared to conventional CT. A total of 61 patients underwent FDG PET–CT before RC and extended pelvic lymphadenectomy. A template for extended pelvic lymphadenectomy to the level of the inferior mesenteric artery was divided into 11 anatomic nodal packets. Definitive pathologic findings of resected LNs were correlated with the results of FDG PET–CT and CT alone in a patient- and nodal packet-based manner. Among the 61 patients, pathological staging confirmed LN metastasis in 17 patients (27.9 %). In total, 627 LN packets (2580 LNs) were resected and histologically evaluated. The mean number of LNs removed was 42 (median 40; range 22–118). Of the 627 LN packets removed, 27 packets (4.3 %) were positive for LN metastasis based on pathologic analysis. On a patient-based analysis, FDG PET–CT and conventional CT showed a sensitivity of 47.1 and 29.4 %, respectively, specificity of 93.2 and 97.7 %, respectively, positive predictive value (PPV) of 72.7 and 78.2 %, respectively, and negative predictive value (NPV) of 82.0 and 78.2 %, respectively. On a nodal packet-based analysis, sensitivity, specificity, PPV, and NPV were 14.8, 97.8, 23.5, and 96.2 %, respectively, for PET-CT and 11.1, 98.7, 27.3, and 96.1 %, respectively, for conventional CT. Combined FDG PET–CT did not improve the diagnostic accuracy of conventional CT for the detection of LN metastasis in bladder cancer patients scheduled for RC.
- Published
- 2015
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- View/download PDF
49. Hyaluronate–Flt1 peptide conjugate/epirubicin micelles for theranostic application to liver cancers
- Author
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Seung Kew Yoon, Sei Kwang Hahn, Sung Woo Hong, Seonghoon Kim, Hyemin Kim, Minsoo Cho, Seok Hyun Yun, Ki Su Kim, and Wonhee Hur
- Subjects
Chemistry ,General Chemical Engineering ,Cancer ,General Chemistry ,Pharmacology ,medicine.disease ,Peptide conjugate ,Micelle ,In vivo ,Hepatocellular carcinoma ,medicine ,Doxorubicin ,medicine.drug ,Conjugate ,Epirubicin - Abstract
Cancer theranostic systems using polymeric micelles are emerging for simultaneous diagnosis and therapy. In this work, we have developed hyaluronate (HA)–Flt1 peptide conjugate micelles encapsulating epirubicin for theranostic treatment of hepatocellular carcinoma. Intravital bioimaging without labelling and in vivo anti-tumor therapeutic effect clearly confirmed the feasibility of HA–Flt1 peptide conjugate/epirubicin micelles for target-specific theranostic treatment of liver cancers.
- Published
- 2015
- Full Text
- View/download PDF
50. Position sensorless control method of IPMSM applying three shunt sensing PWM inverter using predictive current
- Author
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Chung-Yuen Won, Woo-Jae Kim, Sung-Woo Hong, Jun-Chan Kim, Il-Kuen Won, Kyoung-Min Choo, and Jung-Hyo Lee
- Subjects
010302 applied physics ,Engineering ,business.industry ,020208 electrical & electronic engineering ,Modulation index ,Motor control ,02 engineering and technology ,01 natural sciences ,law.invention ,Motor drive ,Three-phase ,Control theory ,law ,0103 physical sciences ,0202 electrical engineering, electronic engineering, information engineering ,Electronic engineering ,Resistor ,business ,Control methods ,Shunt (electrical) ,Voltage - Abstract
In this paper, position sensorless control method of IPMSM applying three shunt sensing PWM inverter using predictive current for phase current reconstruction and EMF calculation is proposed. Considering the price and volume of the system, a motor drive system applied with shunt and sensorless has been recently studied. However, there is some area that cannot measure three phase current especially in high-speed motor operation where the MI (Modulation index) is increased. It deteriorates the control stability because of the phase current distortion in motor control. In this paper, the boundary where phase currents cannot be obtained is defined and the method for reconstructing the phases current are proposed by predicting phase current in the area which phase current measurement is impossible. Also, the EMF observer and synchronous voltage recalculation method are applied for sensorless control considering both linear area and over-modulated area.
- Published
- 2017
- Full Text
- View/download PDF
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