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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 | Impact of Mitral Valve Repair Case Volume on Postoperative Mortality - A Nationwide Korean Cohort Study - | Background: Although mitral valve repair is recommended over replacement due to better outcomes, repair rates vary significantly among centers. This study examined the effect of institutional mitral valve repair volume on postoperative mortality. Methods and Results: All cases of adult mitral valve repair performed in Korea between 2009 and 2016 were analyzed. The association between case volume and 1-year mortality was analyzed after categorizing centers according to the number of mitral valve repairs performed as low-, medium-, or high-volume centers (40 cases/year, respectively). The effect of case volume on cumulative all-cause mortality was also assessed. In all, 6,041 mitral valve repairs were performed in 86 centers. The 1-year mortality in low-, medium-, and high-volume centers was 10.1%, 8.7%, and 4.7%, respectively. Low- and medium-volume centers had increased risk of 1-year mortality compared with high-volume centers, with odds ratios of 2.80 (95% confidence interval [CI] 2.15-3.64; P<0.001) and 2.66 (95% CI 1.94-3.64; P<0.001), respectively. The risk of cumulative all-cause mortality was also worse in low- and medium-volume centers, with hazard ratios of 1.96 (95% CI 1.68-2.29; P<0.001) and 1.77 (95% CI 1.47-2.12; P<0.001), respectively. Conclusions: Lower institutional case volume was associated with higher mortality after mitral valve repair. A minimum volume standard may be required for hospitals performing mitral valve repair to guarantee adequate outcome. | Nam, Karam; Jang, Eun Jin; Jo, Jun Woo; Choi, Jae Woong; Jo, Jun Gi; Lee, Jaehun; Ryu, Ho Geol | Seoul Natl Univ, Seoul Natl Univ Hosp, Dept Anesthesiol & Pain Med, Coll Med, 101 Daehak Ro, Seoul 03080, South Korea; Andong Natl Univ, Dept Informat Stat, Gyeongsangbuk Do, South Korea; Kyungpook Natl Univ, Dept Stat, Daegu, South Korea; Seoul Natl Univ, Seoul Natl Univ Hosp, Dept Thorac & Cardiovasc Surg, Coll Med, Seoul, South Korea | ; Ryu, Ho/J-5463-2012 | 55750745300; 37861741600; 57210425017; 58120781500; 57218696257; 57218697527; 7202277246 | hogeol@gmail.com; | CIRCULATION JOURNAL | CIRC J | 1346-9843 | 1347-4820 | 84 | 9 | SCIE | CARDIAC & CARDIOVASCULAR SYSTEMS | 2020 | 2.993 | 51.8 | 0.08 | 2025-06-25 | 1 | 1 | Case volume; Mitral valve repair; Outcomes | BYPASS GRAFT-SURGERY; HOSPITAL VOLUME; PROCEDURAL VOLUME; OPERATIVE MORTALITY; SURGICAL VOLUME; REGURGITATION; REPLACEMENT; OUTCOMES; RATES; EVOLUTION | Case volume; Mitral valve repair; Outcomes | Adult; Aged; Female; Heart Valve Prosthesis Implantation; Hospital Mortality; Humans; Kaplan-Meier Estimate; Male; Middle Aged; Mitral Valve; Mitral Valve Annuloplasty; Mitral Valve Insufficiency; Postoperative Complications; Postoperative Period; Reoperation; Republic of Korea; Retrospective Studies; Risk Factors; Treatment Outcome; adult; all cause mortality; article; clinical article; cohort analysis; controlled study; female; human; Korea; Korean (people); male; mitral valve repair; multicenter study; surgical mortality; adverse event; aged; clinical trial; heart valve replacement; hospital mortality; Kaplan Meier method; middle aged; mitral annuloplasty; mitral valve; mitral valve regurgitation; mortality; postoperative complication; postoperative period; reoperation; retrospective study; risk factor; South Korea; treatment outcome | English | 2020 | 2020-09 | 10.1253/circj.cj-19-1148 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Letter | An Alternative Approach to the Ultrasound-Guided Intra-Articular Hip Injection | Lee, Byung Joo; Moon, Hyunseok; Hwang, Jong Moon; Park, Donghwi | Daegu Fatima Hosp, Dept Rehabil Med, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Dept Rehabil Med, Daegu, South Korea | Park, Donghwi/GYQ-6185-2022 | 57202436497; 57205240804; 56367634000; 56606561400 | PM&R | PM&R | 1934-1482 | 1934-1563 | 12 | 1 | SCIE | REHABILITATION;SPORT SCIENCES | 2020 | 2.298 | 52.2 | 0.41 | 2025-06-25 | 4 | 3 | Injections, Intra-Articular; Ultrasonography; Ultrasonography, Interventional; color Doppler flowmetry; femoral neck; fluoroscopy; human; imaging; injection; interventional ultrasonography; intra articular hip joint injection; Letter; non invasive procedure; patient positioning; priority journal; radiation exposure; recumbency; echography; intraarticular drug administration | English | 2020 | 2020-01 | 10.1002/pmrj.12277 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||||
| ○ | ○ | Article | Clinical factors associated with suicide risk independent of depression in persons with epilepsy | Purpose: We determined whether factors related to epilepsy are associated with a risk of suicide independent of depression in persons with epilepsy. Method: This cross-sectional study included adults with epilepsy. Suicidality and depression were assessed with the Mini International Neuropsychiatric Interview (MINI). Patients were divided into two age groups ( 40 years). Presence of suicide risk was defined as a MINI suicidality score >= 1. A stepwise logistic regression analysis was conducted. Results: A total of 212 participants were recruited (52.4 % men). Suicide risk and depression were noted in 31.6 % and 22.2 % of participants, respectively. An antiepileptic drug load >= 1 (odds ratio [OR], 4.093-4.152) was significantly associated with a risk of suicide, independent of depression (OR, 5.794), and a past or family history of psychiatric disorders (OR, 2.677). When stratified by age, pregabalin usage (OR, 13.403) in the younger group and high seizure frequency (>= 1 per month) (OR, 5.748) in the older group were associated with a risk of suicide independent of current depression. Conclusion: The risk of suicide in persons with epilepsy may be associated with epilepsy-related factors such as a high antiepileptic drug load, frequent seizures, and use of pregabalin, independent of depression. Such risk factors may vary depending on the age of the patient. | Kim, Soo Jeong; Kim, Hyo Jae; Jeon, Ji-Ye; Kim, Hyun-Woo; Lee, Sang-Ahm | Univ Ulsan, Dept Neurol, Asan Med Ctr, Coll Med, 88,Olymp Ro 43 Gil, Seoul 138736, South Korea; Kyungpook Natl Univ, Chilgok Hosp, Dept Neurol, Chilgok, South Korea; Pusan Natl Univ, Yangsan Hosp, Dept Neurol, Yangsan, South Korea | ; Kim, Seong Cheol/ABD-1493-2022; Lee, Dong/J-2778-2012 | 57194115961; 57193096910; 57194943660; 57226027023; 57190211641 | salee@amc.seoul.kr; | SEIZURE-EUROPEAN JOURNAL OF EPILEPSY | SEIZURE-EUR J EPILEP | 1059-1311 | 1532-2688 | 80 | SCIE | CLINICAL NEUROLOGY;NEUROSCIENCES | 2020 | 3.184 | 52.2 | 0.65 | 2025-06-25 | 17 | 17 | Epilepsy; Depression; Suicidality; Antiepileptic drug; Pregabalin | ANTIEPILEPTIC DRUGS; PSYCHIATRIC COMORBIDITY; KOREAN PEOPLE; DISORDERS | Antiepileptic drug; Depression; Epilepsy; Pregabalin; Suicidality | Adult; Anticonvulsants; Cross-Sectional Studies; Depression; Epilepsy; Female; Humans; Male; Risk Factors; Suicide; carbamazepine; clobazam; clonazepam; lamotrigine; levetiracetam; oxcarbazepine; perampanel; phenytoin; pregabalin; topiramate; valproic acid; zonisamide; anticonvulsive agent; adult; age; Article; cross-sectional study; depression; drug use; epilepsy; epileptic patient; family history; female; human; major clinical study; male; mental disease; mini international neuropsychiatric interview; nuclear magnetic resonance imaging; priority journal; risk factor; suicidal behavior; suicide; temporal lobe; complication; depression; epilepsy | English | 2020 | 2020-08 | 10.1016/j.seizure.2020.05.026 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Comparison between the Neurological Disorders Depression Inventory for Epilepsy and the Patient Health Questionnaire-9 in patients with epilepsy according to antiepileptic drug load | Purpose: We compared the Neurological Disorders Depression Inventory for Epilepsy (NDDI-E) with the Patient Health Questionnaire-9 (PHQ-9) according to different antiepileptic drug (AED) loads in people with epilepsy (PWE). Methods: Depression and suicidality were assessed with the Mini International Neuropsychiatric Interview (MINI), the NDDI-E, and the PHQ-9. A receiver operating characteristic (ROC) curve analysis was used. Sensitivity and specificity of the NDDI-E and PHQ-9 were compared between an AED load = 2. Results: Of 213 participants included, 22.5 % were diagnosed with current depression by the MINI, and 9 % had a moderate to severe risk of suicide. Using the cutoff of 9.5 and 13.5 for the PHQ-9 and NDDI-E, respectively, in the total group, the PHQ had a higher sensitivity (91.7 %) but lower specificity (75.8 %) than the NDDI-E (66.7 % and 87.3 %, respectively) (p < 0.001). In a group with an AED load < 2, the sensitivity and specificity did not differ between the PHQ-9 and NDDI-E. In a group with an AED load 2, however, the PHQ-9 had a higher sensitivity (90.9 %, p < 0.063) but lower specificity (65.2 %, p < 0.001) than the NDDI-E (68.2 % and 81.2 %, respectively). For screening of suicide risk, the sensitivity and specificity were not different between the PHQ-9 and NDDI-E in all tested groups. The negative predictive values of both instruments were above 95 % for suicide risk. Conclusion: In patients with a low AED load, the sensitivity and specificity did not differ between the PHQ-9 and NDDI-E. In contrast, in patients with a high AED load, the PHQ-9 had a poor specificity whereas the NDDI-E had a poor sensitivity. | Kim, Hyo Jae; Jeon, Ji-Ye; Kim, Hyun-Woo; Lee, Sang-Ahm | Univ Ulsan, Coll Med, Asan Med Ctr, Dept Neurol, Seoul, South Korea; Kyungpook Natl Univ, Chilgok Hosp, Dept Neurol, Chilgok, South Korea; Pusan Natl Univ, Yangsan Hosp, Dept Neurol, Yangsan, South Korea | Lee, Dong/J-2778-2012 | 57193096910; 57194943660; 57226027023; 57190211641 | salee@amc.seoul.kr; | SEIZURE-EUROPEAN JOURNAL OF EPILEPSY | SEIZURE-EUR J EPILEP | 1059-1311 | 1532-2688 | 74 | SCIE | CLINICAL NEUROLOGY;NEUROSCIENCES | 2020 | 3.184 | 52.2 | 1.22 | 2025-06-25 | 17 | 17 | Epilepsy; PHQ-9; NDDI-E; Depression; Suicidality; Questionnaire; Validation | PHQ-9; VALIDATION; VALIDITY; VERSION; PEOPLE | Depression; Epilepsy; NDDI-E; PHQ-9; Questionnaire; Suicidality; Validation | Adult; Anticonvulsants; Brief Psychiatric Rating Scale; Depression; Epilepsy; Female; Health Surveys; Humans; Male; Middle Aged; Nervous System Diseases; Republic of Korea; Suicidal Ideation; anticonvulsive agent; anticonvulsive agent; adult; Article; clinical effectiveness; controlled study; depression assessment; epilepsy; female; high risk patient; human; intermediate risk patient; intermethod comparison; maintenance drug dose; major clinical study; male; mini international neuropsychiatric interview; neurologic disease assessment; Neurological Disorders Depression Inventory for Epilepsy; Patient Health Questionnaire 9; predictive value; prescription; priority journal; receiver operating characteristic; risk assessment; screening; sensitivity and specificity; suicidal behavior; Brief Psychiatric Rating Scale; comparative study; depression; epilepsy; health survey; middle aged; neurologic disease; psychology; South Korea; suicidal ideation | English | 2020 | 2020-01 | 10.1016/j.seizure.2019.11.005 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Comparison of biochemical parameters and chemokine levels in pleural fluid between patients with anergic and non-anergic tuberculous pleural effusion | Pleural fluid (PF) immune response in anergic tuberculous pleural effusion (TPE) patients is poorly understood. This study aimed to compare PF biochemical parameters and chemokine levels between anergic and non-anergic TPE patients. Chemokine arrays, cytokine measurements, and flow cytometry were performed in 58 patients (TPE [non-anergic (n = 32) and anergic (n = 10)] and malignant pleural effusion (MPE) [n = 16]). PF adenosine deaminase 2 (ADA2) levels were significantly lower in anergic TPE patients than in non-anergic TPE patients (p = 0.048). Among the 40 chemokines tested, PF CCL27 levels were significantly higher in anergic TPE patients than in non-anergic TPE and MPE patients (p < 0.001). The percentage of CD4(+)CCR10(+)T cells in PF was higher in anergic TPE patients than in non-anergic TPE and MPE patients (p = 0.001). We reported here that CCL27/CCR10 interactions might contribute to pathophysiology in anergic TPE. PF CCL27 and CD4(+)CCR10(+)T cells may help in diagnosing TPE in patients with moderate elevation of PF ADA levels. | Kim, Ha-Jeong; Ryu, Suyeon; Choi, Sun Ha; Seo, Hyewon; Yoo, Seung Soo; Lee, Shin Yup; Cha, Seung Ick; Park, Jae Yong; Kim, Chang Ho; Lee, Jaehee | Kyungpook Natl Univ, Tumor Heterogene & Network THEN Res Ctr, BK21 Plus KNU Biomed Convergence Program, Dept Physiol,Cell & Matrix Res Inst,Sch Med, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Dept Internal Med, 680 Gukchaebosang Ro, Daegu 700842, South Korea; Kyungpook Natl Univ, Biomed Res Inst, Daegu, South Korea | Lee, Jaehee/S-1697-2018; Choi, Sun Ha/HPD-7234-2023; Lee, Jun Young/CAI-2335-2022 | 57191717512; 59787801600; 57199723585; 55612130200; 56479781600; 49863712700; 35227126400; 58360293800; 7409873555; 13805476000 | kimch@knu.ac.kr;jaelee@knu.ac.kr; | TUBERCULOSIS | TUBERCULOSIS | 1472-9792 | 123 | SCIE | IMMUNOLOGY;MICROBIOLOGY;RESPIRATORY SYSTEM | 2020 | 3.131 | 52.3 | 0.12 | 2025-06-25 | 1 | 3 | Tuberculous pleural effusion; Anergy; Adenosine deaminase; CCL27; CCR10 | GAMMA RELEASE ASSAYS; T-CELLS; SITE; COMPARTMENTALIZATION; DIFFERENTIATION; INFLAMMATION; RECRUITMENT; RECEPTORS | Adenosine deaminase; Anergy; CCL27; CCR10; Tuberculous pleural effusion | Adenosine Deaminase; Adult; Aged; Aged, 80 and over; Biomarkers; CD4 Lymphocyte Count; CD4-Positive T-Lymphocytes; Chemokine CCL27; Female; Flow Cytometry; Humans; Intercellular Signaling Peptides and Proteins; Male; Middle Aged; Pleural Effusion; Predictive Value of Tests; Prospective Studies; Protein Array Analysis; Receptors, CCR10; Tuberculosis, Pleural; adenosine deaminase; betacellulin; C-C motif chemokine 18; CD4 antigen; chemokine; chemokine receptor CCR10; cutaneous T cell attracting chemokine; CXCL3 chemokine; eotaxin 2; eotaxin 3; gamma interferon inducible protein 10; granulocyte chemotactic protein 2; herpesvirus entry mediator; interleukin 13; interleukin 17F; interleukin 18 binding protein; interleukin 28A; interleukin 29; interleukin 31; interleukin 9; leukemia inhibitory factor; macrophage derived chemokine; macrophage inflammatory protein 3beta; monocyte chemotactic protein 3; monocyte chemotactic protein 4; osteopontin; protein tyrosine kinase; stromal cell derived factor 1; thrombocyte factor 4; thymus and activation regulated chemokine; ADA2 protein, human; adenosine deaminase; biological marker; CCL27 protein, human; CCR10 protein, human; chemokine receptor CCR10; cutaneous T cell attracting chemokine; signal peptide; adult; aged; Article; biochemical analysis; biochemistry; comparative study; controlled study; female; flow cytometry; human; major clinical study; male; malignant pleura effusion; pathophysiology; pleura effusion; pleura fluid; priority journal; prospective study; protein interaction; T lymphocyte; tuberculosis; tuberculous pleural effusion; CD4 lymphocyte count; CD4+ T lymphocyte; immunology; microbiology; middle aged; pleura effusion; predictive value; protein microarray; tuberculous pleurisy; very elderly | English | 2020 | 2020-07 | 10.1016/j.tube.2020.101940 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Development of a photo-thermal scan head for high-speed atomic force microscope | Atomic force microscopy (AFM) is one of the frequently used microscopy techniques to capture high-resolution images in science and engineering. Since the spatial resolution limit of AFM has been mostly reached and no further improvement is likely, much of the recent attention in the development of new AFM has been on improvement of speed. We present a photo-thermal, high-speed atomic force microscope scan head capable of exciting cantilevers photo-thermally and detecting cantilever motions with an optical beam bounce technique. The design features a unique Z-collar that permits direct mounting of a Z-scanner onto a microscope objective lens to achieve a high mechanical bandwidth. We demonstrate the performance of the developed scan head by imaging data tracks of a Blu-ray disk in tapping and contact modes. | Alunda, Bernard Ouma; Otieno, Luke Oduor; Park, Sang Joon; Choi, Si Geun; Kim, Jong Hyoung; Lee, Yong Joong | Kyungpook Natl Univ, Sch Mech Engn, 80 Daehak Ro, Daegu 41566, South Korea; Korea Inst Ind Technol KITECH, Extreme Fabricat Technol Grp, 320 Technosunhwan Ro, Daegu 42994, South Korea | ; Kim, Hyung-Kwan/ITU-6159-2023; Otieno, Luke/KHW-8698-2024 | 55354745500; 57205578290; 56819450700; 54880449100; 35753433900; 57183248500 | yjlee76@knu.ac.kr; | MEASUREMENT SCIENCE AND TECHNOLOGY | MEAS SCI TECHNOL | 0957-0233 | 1361-6501 | 31 | 4 | SCIE | ENGINEERING, MULTIDISCIPLINARY;INSTRUMENTS & INSTRUMENTATION | 2020 | 2.046 | 52.3 | 0.1 | 2025-06-25 | 2 | 2 | high-speed atomic force microscopy; optical beam deflection; finite element analysis | SURFACE; SEMICONDUCTOR; VISUALIZATION; CANTILEVERS | finite element analysis; high-speed atomic force microscopy; optical beam deflection | Finite element method; Nanocantilevers; High resolution image; High Speed; Mechanical bandwidth; Microscope objective; Microscopy technique; Optical beam deflection; Science and engineering; Spatial resolution; Microscopes | English | 2020 | 2020-04 | 10.1088/1361-6501/ab5292 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Structural insights into the psychrophilic germinal protease Pa GPR and its autoinhibitory loop | In spore forming microbes, germination protease (GPR) plays a key role in the initiation of the germination process. A critical step during germination is the degradation of small acid-soluble proteins (SASPs), which protect spore DNA from external stresses (UV, heat, low temperature, etc.). Inactive zymogen GPR can be activated by autoprocessing of the N-terminal pro-sequence domain. Activated GPR initiates the degradation of SASPs; however, the detailed mechanisms underlying the activation, catalysis, regulation, and substrate recognition of GPR remain elusive. In this study, we determined the crystal structure of GPR fromPaenisporosarcinasp. TG-20 (PaGPR) in its inactive form at a resolution of 2.5 A. Structural analysis showed that the active site of PaGPR is sterically occluded by an inhibitory loop region (residues 202-216). The N-terminal region interacts directly with the self-inhibitory loop region, suggesting that the removal of the N-terminal pro-sequence induces conformational changes, which lead to the release of the self-inhibitory loop region from the active site. In addition, comparative sequence and structural analyses revealed thatPaGPR contains two highly conserved Asp residues (D123 and D182) in the active site, similar to the putative aspartic acid protease GPR fromBacillus megaterium.The catalytic domain structure of PaGPR also shares similarities with the sequentially non-homologous proteins HycI and HybD. HycI and HybD are metal-loproteases that also contain two Asp (or Glu) residues in their active site, playing a role in metal binding. In summary, our results provide useful insights into the activation process ofPaGPR and its active conformation. | Lee, Chang Woo; Lee, Saeyoung; Jeong, Chang-Sook; Hwang, Jisub; Chang, Jeong Ho; Choi, In-Geol; Kim, T. Doohun; Park, HaJeung; Kim, Hye-Yeon; Lee, Jun Hyuck | Korea Polar Res Inst, Unit Res Pract Applicat, Incheon 21990, South Korea; Korea Basic Sci Inst, Res Ctr Bioconvergence Anal, Chungbuk 34133, South Korea; Korea Univ, Coll Life Sci & Biotechnol, Dept Biotechnol, Seoul 02841, South Korea; Univ Sci & Technol, Dept Polar Sci, Incheon 21990, South Korea; Kyungpook Natl Univ, Dept Biol Educ, Daegu 41566, South Korea; Sookmyung Womans Univ, Coll Nat Sci, Dept Chem, Seoul 04310, South Korea; Scripps Res Inst, Scripps Florida, Xray Core, 130 Scripps Way 1A1, Jupiter, FL 33458 USA; Korea Res Inst Chem Technol, Ctr Convergent Res Emerging Virus Infect CEVI, Daejeon 34114, South Korea | Choi, In-Geol/F-3152-2013; Lee, Chang-Woo/L-5093-2015 | 57897934100; 35771032400; 7102419365; 57223119103; 57203598905; 7401471671; 7407120687; 7601570080; 56002614500; 57214247889 | hajpark@scripps.edu;hyeyeon@kbsi.re.kr;junhyuklee@kopri.re.kr;junhyucklee@kopri.re.kr; | JOURNAL OF MICROBIOLOGY | J MICROBIOL | 1225-8873 | 1976-3794 | 58 | 9 | SCIE | MICROBIOLOGY | 2020 | 3.422 | 52.6 | 0.16 | 2025-06-25 | 2 | 2 | crystal structure; germination protease; X-ray crystallography; zymogen | ACID-SOLUBLE PROTEINS; CRYSTAL-STRUCTURE; BACILLUS-MEGATERIUM; DEGRADES SMALL; CATHEPSIN-L; SPORES; PROPEPTIDE; REFINEMENT; STABILITY; MECHANISM | crystal structure; germination protease; X-ray crystallography; zymogen | Amino Acid Sequence; Bacillus megaterium; Catalytic Domain; Crystallography, X-Ray; DNA, Bacterial; Endopeptidases; Enzyme Precursors; Planococcaceae; Protein Structure, Tertiary; Sequence Alignment; Spores, Bacterial; bacterial DNA; enzyme precursor; proteinase; spore germination protease; amino acid sequence; Bacillus megaterium; bacterial spore; enzyme active site; genetics; growth, development and aging; metabolism; physiology; Planococcaceae; protein tertiary structure; sequence alignment; X ray crystallography | English | 2020 | 2020-09 | 10.1007/s12275-020-0292-0 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | A Cloud-Based Enterprise Resource Planning Architecture for Women's Education in Remote Areas | This research provides an approach to exploring a suitable enterprise resource planning system using cloud management architecture for the educational environment. It enables enterprises to get into the competition. Enterprise resource planning for educational firms provides an approach to address the targeted female population. To achieve this goal, a system has been established that has an infrastructure basis on governments, nongovernment organizations (NGOs), universities, and other social service providers. This paper helps to present the architecture of cloud computing for the overall educational environment concerns around the world. This research aims to contribute to women's education with respect to modern technology. It ensures that technology is cost-efficiently available for women's education in view of the availability and consistency of the system and in accordance with goals. An architecture is proposed to solve and take over the limitations that have been faced and are the reasons for the failure of the available systems. After designing the architecture, a survey questionnaire was designed and conducted with students and professionals of Air University, Bahria University, and Preston University. | Nasim, Raheela; Ullah, Halim; Rizvi, Sanam Shahla; Abbasi, Almas; Khan, Sajid; Riaz, Rabia; Paul, Anand | Preston Univ, Dept Comp Sci, Islamabad 44000, Pakistan; Raptor Interact Pty Ltd, Eco Blvd,Witch Hazel Ave, ZA-0157 Centurion, South Africa; Int Islamic Univ, Dept Comp Sci & Software Engn, Islamabad 44000, Pakistan; Huazhong Univ Sci & Technol, Sch Comp Sci & Technol, Wuhan 430074, Peoples R China; Univ Azad Jammu & Kashmir, Dept CS & IT, Muzaffarabad 13100, Pakistan; Kyungpook Natl Univ, Sch Comp Sci & Engn, Daegu 702701, South Korea | Khan, Dr. Sajid/ABH-3675-2020; Rizvi, Sanam Shahla/GQQ-8390-2022; Riaz, Rabia/HJI-6429-2023; Paul, Anand/V-6724-2017 | 57219650346; 57219649568; 25927493500; 36863336500; 57209825240; 24475180100; 56650522400 | raheelach913@gmail.com;halimktk@gmail.com;sanam.shahla@raptorinteractive.com;almas.abbasi@iiu.edu.pk;Khansajid@hust.edu.cn;rabiaiqbal18@gmail.com;paul.editor@gmail.com; | ELECTRONICS | ELECTRONICS-SWITZ | 2079-9292 | 9 | 11 | SCIE | COMPUTER SCIENCE, INFORMATION SYSTEMS;ENGINEERING, ELECTRICAL & ELECTRONIC;PHYSICS, APPLIED | 2020 | 2.397 | 52.9 | 0.34 | 2025-06-25 | 4 | 8 | ERP; cloud computing; network management; cloud architecture; women's education; higher education | Cloud architecture; Cloud computing; ERP; Higher education; Network management; Women’s education | English | 2020 | 2020-11 | 10.3390/electronics9111758 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | A Compact C-Band Bandpass Filter with an Adjustable Dual-Band Suitable for Satellite Communication Systems | A narrowband dual-band bandpass filter (BPF) with independently tunable passbands is presented through a systematic design approach. A size-efficient coupling system is proposed with the capability of being integrated with additional resonators without increasing the size of the circuit. Two flag-shaped resonators along with two stepped-impedance resonators are integrated with the coupling system to firstly enhance the quality response of the filter, and secondly to add an independent adjustability feature to the filter. The dual passband of the filter is centered at 4.42 GHz and 7.2 GHz, respectively, with narrow passbands of 2.12% and 1.15%. The lower and upper passbands can be swept independently over 600 MHz and 1000 MHz by changing only one parameter of the filter without any destructive effects on the frequency response. According to United States frequency allocations, the first passband is convenient for mobile communications and the second passband can be used for satellite communications. The filter has very good in- and out-of-band performance with very small passband insertion losses of 0.5 dB and 0.86 dB as well as a relatively strong stopband attenuation of 30 dB and 25 dB, respectively, for the case of lower and upper bands. To verify the proposed approach, a prototype of the filter is fabricated and measured showing a good agreement between numerically calculated and measured results. | Lalbakhsh, Ali; Ghaderi, Amirhossein; Mohyuddin, Wahab; Simorangkir, Roy B. V. B.; Bayat-Makou, Nima; Ahmad, Muhammad Sajjad; Lee, Gwan Hui; Kim, Kang Wook | Macquarie Univ, Sch Engn, Sydney, NSW 2109, Australia; Islamic Azad Univ, Kermanshah Branch, Young Researchers & Elite Club, Kermanshah 6718997551, Iran; Natl Univ Sci & Technol, Res Inst Microwave & Millimeter Wave Studies, Islamabad 44000, Pakistan; Univ Rennes 1, Inst Elect & Telecommun Rennes IETR, F-35000 Rennes, France; Univ Toronto, Edward S Rogers Sr Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada; Queens Univ, Sch Elect Elect Engn & Comp Sci, Belfast BT9 5BN, Antrim, North Ireland; Kyungpook Natl Univ, Sch Elect Engn, Daegu 41566, South Korea | ; Mohyuddin, Wahab/ABE-4183-2021; Simorangkir, Roy B. V. B./I-8199-2019; Lalbakhsh, Ali/N-2053-2019 | 36662381400; 57212431663; 56179736900; 55847312400; 57044745000; 56082248400; 57201689364; 57204432422 | ali.lalbakhsh@mq.edu.au;Amir92h@yahoo.com;wahab.mohyuddin@seecs.edu.pk;roy.simorangkir@ieee.org;nima.bayatmakou@utoronto.ca;m.ahmad@qub.ac.uk;gwan6088@knu.ac.kr;kang_kim@ee.knu.ac.kr; | ELECTRONICS | ELECTRONICS-SWITZ | 2079-9292 | 9 | 7 | SCIE | COMPUTER SCIENCE, INFORMATION SYSTEMS;ENGINEERING, ELECTRICAL & ELECTRONIC;PHYSICS, APPLIED | 2020 | 2.397 | 52.9 | 2.84 | 2025-06-25 | 42 | 48 | dual-band bandpass filter (BPF); end-coupled transmission lines; flag-shaped resonator; lumped circuit model; microstrip technology; microwave passive components; tunable passbands | WILKINSON POWER DIVIDER; LOW-PASS FILTER; COMMON-MODE; LOWPASS FILTER; QUARTER-WAVELENGTH; DESIGN; SUPPRESSION; OPTIMIZATION | Dual-band bandpass filter (BPF); End-coupled transmission lines; Flag-shaped resonator; Lumped circuit model; Microstrip technology; Microwave passive components; Tunable passbands | English | 2020 | 2020-07 | 10.3390/electronics9071088 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | A Design of Hybrid Appliance Local Network (HALN) Communication Architecture | Recently, appliance networks have been widely adopted in many home applications. Usually, an appliance network requires a server. However, as the number of network users increases, there is not only the problem of costs due to extension of the server and the increase in power consumption, but also the problem that the functions of appliances are restricted when the connection to a server is unavailable. This paper presents a hybrid appliance local network (HALN) communication architecture to tackle the problems with server-based appliance networks. The HALN architecture is designed to remove and/or minimize the utilization of servers by offering the capability of communicating directly with other appliance products. The proposed architecture can also be integrated with existing server-based communication architectures. The HALN architecture is based on the simple service discovery protocol (SSDP) and HTTP protocol (RESTful HTTP server/client architecture) technologies. The effectiveness of HALN is experimentally demonstrated using a smartphone and a set of Linux-based Wi-Fi modems on which the functions that can be provided by typical appliances are implemented. Using the proposed architecture, the communication reliability is also improved by 1.6% as compared with that of an existing server-based communication architecture. | Park, Hyoung-Jun; Lee, Dongik | Kyungpook Natl Univ, 80 Daehak Ro, Daegu 41566, South Korea | 57214123240; 55698910600 | hjpark40400@gmail.com;dilee@knu.ac.kr; | ELECTRONICS | ELECTRONICS-SWITZ | 2079-9292 | 9 | 1 | SCIE | COMPUTER SCIENCE, INFORMATION SYSTEMS;ENGINEERING, ELECTRICAL & ELECTRONIC;PHYSICS, APPLIED | 2020 | 2.397 | 52.9 | 0 | 2025-06-25 | 0 | 0 | appliances; appliance network; communication network; local network architecture | Appliance network; Appliances; Communication network; Local network architecture | English | 2020 | 2020-01 | 10.3390/electronics9010170 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||||
| ○ | ○ | Article | A Novel 8T Cell-Based Subthreshold Static RAM for Ultra-Low Power Platform Applications | Subthreshold SRAMs profit various energy-constrained applications. The traditional 6T SRAMs exhibit poor cell stability with voltage scaling. To this end, several 8T to 16T cell designs have been reported to improve the stability. However, they either suffer one of disturbances or consume large bit-area overhead. Furthermore, some cell options have a limited write-ability. This paper presents a novel 8T static RAM for reliable subthreshold operation. The cell employs a fully differential scheme and features cross-point access. An adaptive cell bias for each operating mode eliminates the read disturbance and enlarges the write-ability as well as the half-select stability in a cost-effective small bit-area. The bit-cell also can support efficient bit-interleaving. To verify the SRAM technique, a 32-kbit macro incorporating the proposed cell was implemented with an industrial 180 nm low-power CMOS process. At 0.4 V and room temperature, the proposed cell achieves 3.6x better write-ability and 2.6x higher dummy-read stability compared with the commercialized 8T cell. The 32-kbit SRAM successfully operates down to 0.21 V (similar to 0.27 V lower than transistor threshold voltage). At its lowest operating voltage, the sleep-mode leakage power of entire SRAM is 7.75 nW. Many design results indicate that the proposed SRAM design, which is applicable to an aggressively-scaled process, might be quite useful in realizing cost-effective robust ultra-low voltage SRAMs. | Kim, Taehoon; Manisankar, Sivasundar; Chung, Yeonbae | Kyungpook Natl Univ, Sch Elect Engn, Daegu 41566, South Korea | Manisankar, Sivasundar/HGE-7389-2022 | 58260454500; 57188576950; 7404387325 | thkim7@ee.knu.ac.kr;siva@ee.knu.ac.kr;ybchung@ee.knu.ac.kr; | ELECTRONICS | ELECTRONICS-SWITZ | 2079-9292 | 9 | 6 | SCIE | COMPUTER SCIENCE, INFORMATION SYSTEMS;ENGINEERING, ELECTRICAL & ELECTRONIC;PHYSICS, APPLIED | 2020 | 2.397 | 52.9 | 0.34 | 2025-06-25 | 3 | 7 | subthreshold SRAM; ultra-low power; cell stability; 8T cell | SRAM; OPERATION | 8T cell; Cell stability; Subthreshold SRAM; Ultra-low power | English | 2020 | 2020-06 | 10.3390/electronics9060928 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | A Trustworthy SIoT Aware Mechanism as an Enabler for Citizen Services in Smart Cities | In the recent era, new information technologies have a significant impact on social networks. Initial integration of information and communication technologies (ICT) into city operations has promoted information city, ease of communication and principles of smart communities. Subsequently, the idea of the Internet of Things (IoT) with the specific focus of social IoT (SIoT) has contributed towards the smart cities (SC), which support the city operations with minimal human interaction. The user-generated data obtained by SIoT can be exploited to produce new useful information for creating citizen-centered smart services for SC. The aim of this research is twofold. Firstly, we used the concept of local and global trust to provide new services in SC based on popular online social networks (OSN) data used by the citizens. Secondly, the sustainability of the three different OSN is assessed. This paper investigates the social network domain with regard to the SC. Although in SC, OSN are increasing day by day, there is still an unresolved issue of trust among their users and also OSN are not much sustainable. In this research, we are analyzing the sustainability of different OSN for the SC. We employ datasets of three different social networks for our analyses. A local trust model is used to identify the central user within the local cluster while the global trust-based framework is used to identify the opinion leaders. Our analysis based on the datasets of Facebook, Twitter, and Slashdot unveil that filtration of these central-local users and opinion leaders result in the dispersion and significant reduction in a network. A novel model is being developed that outlines the relationship between local and global trust for the protection of OSN users in SC. Furthermore, the proposed mechanism uses the data posted by citizens on OSN to propose new services by mitigating the effect of untrusted users. | Rehman, Ateeq Ur; Naqvi, Rizwan Ali; Rehman, Abdul; Paul, Anand; Sadiq, Muhammad Tariq; Hussain, Dildar | Hohai Univ, Coll Internet Things Engn, Changzhou 213022, Peoples R China; Sejong Univ, Dept Unmanned Vehicle Engn, 209 Neungdong Ro, Seoul 05006, South Korea; Kyungpook Natl Univ, Dept Comp Sci & Engn, Daegu 41566, South Korea; Northwestern Polytech Univ, Sch Automat, 127 West Youyi Rd, Xian 710072, Peoples R China; Korea Inst Adv Study KIAS, Sch Computat Sci, 85 Hoegiro, Seoul 02455, South Korea | Sadiq, Dr Muhammad Tariq/AAA-6162-2020; Naqvi, Rizwan/AAW-9242-2020; Hussain, Dr. Dildar/AAS-6731-2020; REHMAN, ATEEQ UR/AAI-6344-2020; Paul, Anand/V-6724-2017; Rehman, Abdul/D-5630-2019; Sadiq, Muhammad/HMP-3877-2023; Hussain, Dildar/LZI-0327-2025 | 57210246601; 55975847900; 57200894071; 56650522400; 57211516602; 57196185189 | ategrehman@gmail.com;rizwanali@sejong.ac.kr;a.rehman.iiui@gmail.com;paul.editor@gmail.com;tariq.sadiq@mail.nwpu.edu.cn;hussain@kias.re.kr; | ELECTRONICS | ELECTRONICS-SWITZ | 2079-9292 | 9 | 6 | SCIE | COMPUTER SCIENCE, INFORMATION SYSTEMS;ENGINEERING, ELECTRICAL & ELECTRONIC;PHYSICS, APPLIED | 2020 | 2.397 | 52.9 | 2.91 | 2025-06-25 | 39 | 47 | social internet of things; global trust; local trust; opinion leader; communication in smart cities | TRUST; ONLINE; INFORMATION; MODELS | Communication in smart cities; Global trust; Local trust; Opinion leader; Social internet of things | English | 2020 | 2020-06 | 10.3390/electronics9060918 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Agent-Based In-Vehicle Infotainment Services in Internet-of-Things Environments | With the growth of Internet-of-Things (IoT) technology and the automobile industry, various In-Vehicle Infotainment (IVI) services have been developed, in which users can exploit a variety of IVI devices, such as navigation systems, cameras, speakers, headrest displays and heated seats. A typical IVI system is based on the peer-to-peer model, in which the user will directly control each device. This tends to induce a large overhead and inconvenience to the user. To overcome the drawbacks of the peer-to-peer model, the centralized IVI (C-IVI) scheme was recently proposed in which an IVI master is employed to provide IVI services between users and devices. However, the centralized model gives lower performance, as the number of users and devices gets larger. To improve the performance of IVI services, in this paper, we propose an agent-based IVI (A-IVI) scheme. In the proposed A-IVI scheme, a new entity called 'agent' is introduced, based on the C-IVI model. Each IVI agent will be used to manage a group of devices and also to perform the communication with the IVI master, on behalf of the concerned devices. The proposed scheme can be used to provide scalability and perform enhancement. The IVI agents are also helpful for supporting a variety of constrained IVI devices, such as speakers or cameras, which may usually have too low power to perform IoT communications. The proposed A-IVI scheme is implemented by using the IoT messaging protocols. For performance comparison with the existing schemes, we performed testbed experimentations. From the results, we see that the proposed A-IVI scheme can provide better performance than the existing IVI systems in terms of transmission delays, throughput and master's loads. It is expected that the proposed scheme may be used effectively for IVI systems with a large number of users/devices, as seen in public transportation, such as public trains or airplanes. | Choi, Dong-Kyu; Jung, Joong-Hwa; Nam, Hye-Been; Koh, Seok-Joo | Kyungpook Natl Univ, Sch Comp Sci & Engn, Daegu 41566, South Korea | 57194053880; 57194055389; 57218775577; 8958394800 | supergint@gmail.com;godopu16@gmail.com;hbnam129@gmail.com;sjkoh@knu.ac.kr; | ELECTRONICS | ELECTRONICS-SWITZ | 2079-9292 | 9 | 8 | SCIE | COMPUTER SCIENCE, INFORMATION SYSTEMS;ENGINEERING, ELECTRICAL & ELECTRONIC;PHYSICS, APPLIED | 2020 | 2.397 | 52.9 | 0.14 | 2025-06-25 | 3 | 5 | Internet-of-Thing (IoT); In-Vehicle Infotainment (IVI); master; agents | Agents; In-Vehicle Infotainment (IVI); Internet-of-Thing (IoT); Master | English | 2020 | 2020-08 | 10.3390/electronics9081288 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||||
| ○ | ○ | Article | An Ultra-Low Quiescent Current Under-Voltage Lockout Circuit for a High-Voltage Gate Driver IC | An ultra-low quiescent current under-voltage lockout (UVLO) circuit for a high-voltage gate driver integrated circuit (HVIC) is described for application in portable devices. The UVLO circuit consumes the static current in the high-side circuitry and the resistive divider used to detect the supply-voltage was the major consumer of power in the circuit. Hence, a supply-voltage sensor based on a diode-connected metal-oxide-semiconductor field-effect transistor (MOSFET) with a voltage limiter design is proposed to ensure low power consumption. Unlike the conventional UVLO design, where a resistive divider is used, the proposed structure dissipates the negligible current at a low supply-voltage and significantly reduces the static current at the nominal and high supply-voltage. The high-side quiescent current using the proposed design and the conventional designs at various supply-voltage levels are analyzed. In the proposed structure, the size of the voltage sensor is considerably smaller when compared with those in conventional designs. | Cho, Kunhee | Kyungpook Natl Univ, Sch Elect Engn, Daegu 41566, South Korea; Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu 41566, South Korea | 57069360800 | kunhee@knu.ac.kr; | ELECTRONICS | ELECTRONICS-SWITZ | 2079-9292 | 9 | 10 | SCIE | COMPUTER SCIENCE, INFORMATION SYSTEMS;ENGINEERING, ELECTRICAL & ELECTRONIC;PHYSICS, APPLIED | 2020 | 2.397 | 52.9 | 0.14 | 2025-06-25 | 2 | 4 | high-voltage gate driver; HVIC; supply-voltage sensing; under-voltage lockout circuit; UVLO; voltage limiter | NOISE-IMMUNITY | High-voltage gate driver; HVIC; Supply-voltage sensing; Under-voltage lockout circuit; UVLO; Voltage limiter | English | 2020 | 2020-10 | 10.3390/electronics9101729 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Battery Energy Management of Autonomous Electric Vehicles Using Computationally Inexpensive Model Predictive Control | With the emergence of vehicle-communication technologies, many researchers have strongly focused their interest in vehicle energy-efficiency control using this connectivity. For instance, the exploitation of preview traffic enables the vehicle to plan its speed and position trajectories given a prediction horizon so that energy consumption is minimized. To handle the strong uncertainties in the traffic model in the future, a constrained controller is generally employed in the existing researches. However, its expensive computational feature largely prevents its commercialization. This paper addresses computational burden of the constrained controller by proposing a computationally tractable model prediction control (MPC) for real-time implementation in autonomous electric vehicles. We present several remedies to achieve a computationally manageable constrained control, and analyze its real-time computation feasibility and effectiveness in various driving conditions. In particular, both warmstarting and move-blocking methods could relax the computations significantly. Through the validations, we confirm the effectiveness of the proposed approach while maintaining good performance compared to other alternative schemes. | Han, Kyoungseok; Nguyen, Tam W.; Nam, Kanghyun | Kyungpook Natl Univ, Sch Mech Engn, Daegu 41566, South Korea; Univ Michigan, Dept Aerosp Engn, Ann Arbor, MI 48109 USA; Yeungnam Univ, Dept Mech Engn, Gyongsan 38541, South Korea | 56465294700; 57191616168; 36810398500 | kyoungsh@knu.ac.kr;twnguyen@umich.edu;khnam@yu.ac.kr; | ELECTRONICS | ELECTRONICS-SWITZ | 2079-9292 | 9 | 8 | SCIE | COMPUTER SCIENCE, INFORMATION SYSTEMS;ENGINEERING, ELECTRICAL & ELECTRONIC;PHYSICS, APPLIED | 2020 | 2.397 | 52.9 | 0.68 | 2025-06-25 | 10 | 11 | self-driving car; model predictive control; dynamic programming; prediction horizon; move-blocking; warmstarting | STRATEGIES | Dynamic programming; Model predictive control; Move-blocking; Prediction horizon; Self-driving car; Warmstarting | English | 2020 | 2020-08 | 10.3390/electronics9081277 | 바로가기 | 바로가기 | 바로가기 | 바로가기 |
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