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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 | Comparison of serum antimullerian hormone levels after robotic-assisted vs. laparoscopic approach for ovarian cystectomy in endometrioma | Objective: Serum antimullerian hormone (sAMH) is regarded as a useful marker in predicting for ovarian functional reserve. To evaluate whether postoperative change in ovarian reserve differs between robotic-assisted and laparoscopic single-site ovarian cystectomy in patients with ovarian endometrioma by comparing sAMH levels. Study design: The perioperative outcomes in 94 patients with ovarian endometrioma who underwent robotic assisted (n = 40) or laparoscopic (n = 54) cystectomy were compared retrospectively. The sAMH levels were measured by enzyme immunoassay preoperatively and at 3 months and 6 months after surgery. The difference and ratio of sAMH levels between preoperative and 3 months, 6 months after cystectomy were compared between robotic-assisted and laparoscopic approach for predicting which method is better for preservation of ovarian function. Result(s): The sAMH levels were obviously decreased after the surgery (ratio of sAMH levels between preoperative and 3 months, 0.49 +/- 0.46 versus 0.52 +/- 0.28 ng/mL, mean +/- standard deviation) in both groups. There was no difference of the recovery sAMH level at 6 months (ratio of 6 months sAMH to preoperative sAMH level) after cystectomy in unilateral ovarian cystectomy. However, in patients with bilateral endometrioma, the recovery of sAMH level was higher in robotic assisted approach than those of laparoscopic surgery (0.40 +/- 0.24 versus 0.21 +/- 0.23, p = 0.009). In multivariate linear regression analysis, the coefficient of robot surgery was 0.442 (p = 0.028). Conclusion(s): In our study, robotic-assisted cystectomy had higher preservation of ovarian function than the laparoscopic approach for bilateral ovarian endometrioma, but not for unilateral endometrioma. The robotic-assisted approach could be considered for preserving ovarian function in patients with bilateral ovarian endometrioma. (C) 2020 Elsevier B.V. All rights reserved. | Lee, Hyun Jung; Lee, Ji Sun; Lee, Yoon Soon | Kyungpook Natl Univ, Sch Med, Dept Obstet & Gynecol, Daegu, South Korea; Kyungpook Natl Univ Hosp, Dept Obstet & Gynecol, Daegu, South Korea; Kyungpook Natl Univ, Dept Obstet & Gynecol, Chilgok Hosp, Daegu, South Korea | 57202930844; 57216463710; 27172173100 | yslee@knu.ac.kr; | EUROPEAN JOURNAL OF OBSTETRICS & GYNECOLOGY AND REPRODUCTIVE BIOLOGY | EUR J OBSTET GYN R B | 0301-2115 | 1872-7654 | 249 | SCIE | OBSTETRICS & GYNECOLOGY;REPRODUCTIVE BIOLOGY | 2020 | 2.435 | 58.4 | 0.96 | 2025-06-25 | 12 | 13 | Endometrioma; antimullerian hormone; Robot; Laparoscopy | ANTI-MULLERIAN HORMONE; FOLLICLE GROWTH; EXCISION; RESERVE; CYSTS; DECLINE; MARKER; MOUSE | antimüllerian hormone; Endometrioma; Laparoscopy; Robot | Adult; Anti-Mullerian Hormone; Biomarkers; Endometriosis; Female; Humans; Laparoscopy; Ovarian Cysts; Ovarian Reserve; Ovariectomy; Postoperative Period; Retrospective Studies; Robotic Surgical Procedures; Treatment Outcome; dienogest; gonadorelin agonist; hemoglobin; Muellerian inhibiting factor; biological marker; Muellerian inhibiting factor; adult; Article; body mass; clinical feature; cystectomy; endometriosis; endometrium tumor; female; fertility preservation; hormone blood level; human; intermethod comparison; laparoendoscopic single site surgery; length of stay; major clinical study; operation duration; ovarian preservation; ovarian reserve; ovary cyst; ovary function; postoperative period; preoperative evaluation; priority journal; retrospective study; robot assisted surgery; study design; blood; comparative study; endometriosis; laparoscopy; ovariectomy; ovary cyst; procedures; robot assisted surgery; treatment outcome | English | 2020 | 2020-06 | 10.1016/j.ejogrb.2020.04.010 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Effects of oxygen partial pressure on the structural and electrical properties of Al and Sb co -doped p -type ZnO thin films grown by pulsed laser deposition | Koo, Han-sol; Lee, Jung-A.; Heo, Young-Woo; Lee, Joon-Hyung; Lee, Hee Young; Kim, Jeong-Joo | Kyungpook Natl Univ, Sch Mat Sci & Engn, Daegu 41566, South Korea; Yeungnam Univ, Sch Mat Sci & Engn, Gyongsan 38541, South Korea | ; Kim, Jihyun/F-6940-2013; Lee, Jung/AAP-7829-2021 | 59276481800; 55108410500; 7004298542; 57204923460; 8224736600; 8214705700 | jjkim@knu.ac.kr; | THIN SOLID FILMS | THIN SOLID FILMS | 0040-6090 | 1879-2731 | 708 | SCIE | MATERIALS SCIENCE, COATINGS & FILMS;MATERIALS SCIENCE, MULTIDISCIPLINARY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2020 | 2.183 | 58.4 | 0.38 | 2025-06-25 | 8 | 8 | ORIENTATION | Aluminum doping; Antimony doping; Oxygen partial pressure; p-type conductivity; Zinc oxide | II-VI semiconductors; Oxygen; Partial pressure; Pulsed laser deposition; Pulsed lasers; Sapphire; X ray photoelectron spectroscopy; Zinc oxide; C-axis-preferred orientation; C-plane sapphire; High oxygen partial pressure; Low oxygen partial pressure; Oxygen partial pressure; P type ZnO thin film; P-Type conduction; Structural and electrical properties; Thin films | English | 2020 | 2020-08-31 | 10.1016/j.tsf.2020.138130 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Electrochromic and pseudocapacitive behavior of hydrothermally grown WO3 nanostructures | We report the direct synthesis of various WO3 nanostructures (nanoplates, nanobricks, and stacked nanosheets) on fluorine-doped tin oxide conducting substrates for electrochromic and pseudocapacitive energy storage applications. These nanostructures were formed by varying the pH of the hydrothermal solution, which led to monoclinic and triclinic crystal structures. Among these structures, vertically aligned WO3 nanoplates showed good electrochromic properties, with rapid and reversible response of the colored and bleached states in 0.5 M H2SO4 electrolyte. Moreover, the vertically aligned WO3 nanoplates exhibited promising energy storage behavior as a negative electrode material with a higher areal capacitance of 72.6 mF cm(-2) in 0.5 M Na2SO4 electrolyte and better electrochemical performance than the nanobricks and stacked nanosheets. The two-dimensional WO3 nanoplates exhibit strong potential for use in smart windows and negative-electrode pseudocapacitors. | Kumbhar, Vijay S.; Lee, Jaewon; Choi, Yongseon; Lee, Hyeonkwon; Ryuichi, Marukawa; Nakayama, Masaharu; Lee, Wonjoo; Oh, Hyunchul; Lee, Kiyoung | Kyungpook Natl Univ, Sch Nano & Mat Sci & Engn, 2559 Gyeongsang Daero, Sangju, Gyeongbuk, South Korea; Yamaguchi Univ, Grad Sch Sci & Technol Innovat, Dept Appl Chem, 2-16-1 Tokiwadai, Ube, Yamaguchi 7558611, Japan; Daeduk Univ, Div T Mil Serv, 68 Gajeongbuk Ro, Daejeon, South Korea; Gyeongnam Natl Univ Sci & Technol GNTECH, Dept Energy Engn, Jinju 52849, Gyeongnam, South Korea | Oh, Hyunchul/G-5697-2018; Lee, Kiyoung/J-8680-2013 | 55331146700; 59830462300; 57213066729; 57208133419; 57218123698; 35355680600; 57215807492; 55340650900; 57219211501 | wjlee@ddc.ac.kr;oh@gntech.ac.kr;kiyoung@knu.ac.kr; | THIN SOLID FILMS | THIN SOLID FILMS | 0040-6090 | 1879-2731 | 709 | SCIE | MATERIALS SCIENCE, COATINGS & FILMS;MATERIALS SCIENCE, MULTIDISCIPLINARY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2020 | 2.183 | 58.4 | 1.3 | 2025-06-25 | 24 | 25 | Tungsten trioxide; Nanostructures; Hydrothermal growth; Electrochromism; Supercapacitors | THIN-FILMS; PERFORMANCE; NANOCOMPOSITE | Electrochromism; Hydrothermal growth; Nanostructures; Supercapacitors; Tungsten trioxide | Electrochemical electrodes; Electrochromism; Electrolytes; Energy storage; Nanocomposites; Sodium sulfate; Tin oxides; Tungsten compounds; Electrochemical performance; Electrochromic properties; Energy storage applications; Fluorine doped tin oxide; Hydrothermal solution; Negative electrode material; Pseudocapacitive behavior; Triclinic crystal structure; Nanosheets | English | 2020 | 2020-09-01 | 10.1016/j.tsf.2020.138214 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | High-Performance Quantum Dot-Light-Emitting Diodes with a Polyethylenimine Ethoxylated-modified Emission layer | Colloidal quantum dots (QDs) are emerging as one of the most promising candidates due to their unique optical and physical properties. Solution-processed QD-based light-emitting diodes (QLEDs) have been extensively studied and developed for next-generation displays and solid-state lighting. The most practical approach to improve device performance is to optimize charge transport and charge balance in the recombination region. Here, we applied polyethylenimine ethoxylated (PEIE) with low-work function modifiers on top of the quantum dot emissive layer to reach a better charge balance and devices was characterized. Our QLED with a 5.4 nm PEIE layer exhibited a maximum luminance of 41,440 cd/m(2) and current efciency of 4.9 cd/A, which are signifcantly more than 2.3 times greater than that of QLED without PEIE. | Kim, Ju-Seong; Kim, Sae-Wan; Xu, Binrui; Kang, Shin-Won | Kyungpook Natl Univ, Coll IT Engn, Sch Elect Engn, 80 Daehak Ro, Daegu, South Korea | 59862748100; 56808646500; 57193731156; 7405682695 | swkang@knu.ac.kr; | THIN SOLID FILMS | THIN SOLID FILMS | 0040-6090 | 1879-2731 | 709 | SCIE | MATERIALS SCIENCE, COATINGS & FILMS;MATERIALS SCIENCE, MULTIDISCIPLINARY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2020 | 2.183 | 58.4 | 0.46 | 2025-06-25 | 6 | 8 | Cadmium selenide; Zinc sulfide; Quantum dot; Light-emitting diode; Ethoxylated polyethyleneimine; Ultraviolet photoelectron spectroscopy | EFFICIENT; ELECTROLUMINESCENCE; DEVICES; NANOCRYSTAL; POLYMER; BRIGHT | Cadmium selenide; Ethoxylated polyethyleneimine; Light-emitting diode; Quantum dot; Ultraviolet photoelectron spectroscopy; Zinc sulfide | Nanocrystals; Semiconductor quantum dots; Sols; Colloidal quantum dots; Device performance; Low work function; Maximum luminance; Polyethylenimine ethoxylated; Quantum-dot light emitting diodes; Solid state lighting; Solution-processed; Organic light emitting diodes (OLED) | English | 2020 | 2020-09-01 | 10.1016/j.tsf.2020.138179 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Multi-level resistive write-once-read-many memory device based on CdSe/ZnS quantum dots and ZnO nanoparticles | Multi-level three-state resistive memory devices were fabricated using CdSe/ZnS quantum dots (QDs) and ZnO nanoparticles (NPs). Poly-vinyl carbazole (PVK) was added to the synthesized CdSe/ZnS QDs with a core/shell structure to form a stronger charge storage layer in the QDs. The use of PVK enables the design-stage control of the state current and write voltage, along with improvement of the on/off ratio. All thin films were fabricated by the solution spin coating method. Additional quantum wells can be produced using ZnO NPs, which enables the multistate functionality. We optimized the process conditions with respect to PVK and ZnO NPs, and confirmed that the PVK concentration was optimized at 2.5 wt%. In addition, the optimized memory device had an on/off ratio of 1.43 x 10(6) at 0.5 V, the write voltages were 2.2 V and 3.5 V, and the current values in the 0, 1 and 2 states were 4.7 x 10(-9) mA, 2.1 x 10(-5) mA, 1.0 x 10(-1) mA, respectively. The fabricated device demonstrated high stability and reliability through 20 repeat cycles, and displayed a retention time of 80 h. | Kim, Na-Ri; Kim, Sae-Wan; Bae, Jin-Hyuk; Kang, Shin-Won | Kyungpook Natl Univ, Sch Elect Engn, Coll IT Engn, 1370 Sankyuk Dong, Daegu, South Korea | 57207794319; 56808646500; 35326180700; 7405682695 | swkang@knu.ac.kr; | THIN SOLID FILMS | THIN SOLID FILMS | 0040-6090 | 1879-2731 | 709 | SCIE | MATERIALS SCIENCE, COATINGS & FILMS;MATERIALS SCIENCE, MULTIDISCIPLINARY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2020 | 2.183 | 58.4 | 0.31 | 2025-06-25 | 11 | 11 | Cadmium selenide; Zinc sulfide; Quantum dots; Write-once-read-many memory; Zinc oxide particles; Multi-level; Resistive random access memory | LIGHT-EMITTING-DIODES; TRANSPARENT; MECHANISMS | Cadmium selenide; Multi-level; Quantum dots; Resistive random access memory; Write-once-read-many memory; Zinc oxide particles; Zinc sulfide | II-VI semiconductors; Metal nanoparticles; Nanocrystals; Oxide minerals; Selenium compounds; Semiconductor quantum dots; Zinc oxide; ZnO nanoparticles; CdSe/ZnS quantum dots; Core/shell structure; Fabricated device; Nanoparticle (NPs); Process condition; Spin-coating method; Stability and reliabilities; Write-once-read-many; Cadmium compounds | English | 2020 | 2020-09-01 | 10.1016/j.tsf.2020.138120 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Tetragonal-like distortion and enhanced magnetic anisotropy of the cubic spinel Fe3O4 film with a thin ZnFe2O4 capping layer | 25-nm-thick Fe3O4 films without and with 1.5-nm-thick ZnFe2O4 capping layer was deposited on (110) SrTiO3 substrate, and their structural and magnetic properties were studied. X-ray diffraction data showed that the position of the (110) peak shifted marginally to a higher angle after deposition of the capping layer in oxygen environment. Transmission electron microscopy images showed that the Fe3O4 film on the (110) SrTiO3 substrate appeared epitaxial, and the capping layer on the Fe3O4 film appeared polycrystalline. Reciprocal space mapping and pole-figure measurements revealed that a structural distortion of the Fe3O4 layer from cubic to tetragonal-like was presumably induced by a slight change in oxygen content during the deposition of the capping layer in oxygen environment. Compared with the cubic Fe3O4 film, magnetic hysteresis loops of the tetragonal-like Fe3O4 showed increased coercivity and enhanced uniaxial magnetic anisotropy, which were presumably attributed to an increase of crystalline anisotropy level in the tetragonal-like structure. | Ghimire, Santosh; Dho, Joonghoe; Lee, Sang Geul | Kyungpook Natl Univ, Dept Phys, Daegu 702701, South Korea; Korea Basic Sci Inst, Daegu Ctr, Daegu 702701, South Korea | 57203357807; 6602898623; 35278819800 | jhdho@knu.ac.kr; | THIN SOLID FILMS | THIN SOLID FILMS | 0040-6090 | 1879-2731 | 707 | SCIE | MATERIALS SCIENCE, COATINGS & FILMS;MATERIALS SCIENCE, MULTIDISCIPLINARY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2020 | 2.183 | 58.4 | 0.31 | 2025-06-25 | 3 | 4 | Cubic spinel; Magnetite; Tetragonal-like distortion; Magnetic anisotropy | FABRICATION; MORPHOLOGY | Cubic spinel; Magnetic anisotropy; Magnetite; Tetragonal-like distortion | Deposition; High resolution transmission electron microscopy; Iron oxides; Magnetic anisotropy; Magnetic materials; Magnetic thick films; Magnetism; Magnetite; Oxygen; Strontium titanates; Titanium compounds; Crystalline anisotropy; Pole figure measurements; Reciprocal space mapping; Structural and magnetic properties; Structural distortions; Transmission electron microscopy images; Uniaxial magnetic anisotropy; X-ray diffraction data; Zinc compounds | English | 2020 | 2020-08-01 | 10.1016/j.tsf.2020.138073 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | A Novel Security Model for Cooperative Virtual Networks in the IoT Era | The Internet of Things (IoT) has particular applications in public safety as well as other domains such as smart cities, health monitoring, smart homes and environments, smart industry, and various types of pervasive systems. The attacker can simply attack the IoT device in such applications, because it is randomly distributed, dynamic topology and not reliable due to energy and communication limitation. Moreover, the threat to confidentiality and security is increasing as the number of devices connected in IoT is increasing. As the numbers of devices connected to the Internet is expanding, the threat to confidentiality and security is increasing. The aim of this paper is design a typical network security model for cooperative virtual networks in the IoT era. This paper presents and discusses network security vulnerabilities, threats, attacks and risks in switches, firewalls and routers, in addition to a policy to mitigate those risks. The paper provides the fundamentals of secure networking system including firewall, router, AAA server and VLAN technology. It presents a novel security model to defense the network from internal and external attacks and threats in the IoT Era. A testbed is built to investigate the proposed model, and the performed assessment show an effective security performance with a good network performance. | Alabady, Salah A.; Al-Turjman, Fadi; Din, Sadia | Univ Mosul, Coll Engn, Comp Engn Dept, Mosul, Iraq; Antalya Bilim Univ, Dept Comp Engn, Antalya, Turkey; Kyungpook Natl Univ, Daegu, South Korea | Alabady, Salah/B-6684-2018; Alabady, Prof. Dr. Salah/B-6684-2018; Din, Sadia/ADU-4679-2022; Al-Turjman, Fadi/L-2998-2019 | 24528111700; 20336944100; 57188997144 | eng.salah@uomosul.edu.iq;fadi.alturjman@antalya.edu.tr;saadia.deen@gmail.com; | INTERNATIONAL JOURNAL OF PARALLEL PROGRAMMING | INT J PARALLEL PROG | 0885-7458 | 1573-7640 | 48 | 2 | SCIE | COMPUTER SCIENCE, THEORY & METHODS | 2020 | 1.382 | 58.6 | 2.22 | 2025-06-25 | 42 | 46 | Network security policy; Attacks; Internal and external threats; Configuration weaknesses; Security of IoT | MECHANISM | Attacks; Configuration weaknesses; Internal and external threats; Network security policy; Security of IoT | Accident prevention; Automation; Computer system firewalls; Information dissemination; Intelligent buildings; Internet of things; Attacks; Configuration weaknesses; Internal and external threats; Network security policy; Security of IoT; Network security | English | 2020 | 2020-04 | 10.1007/s10766-018-0580-z | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Big Data Processing using Internet of Software Defined Things in Smart Cities | Software Defined Networks (SDN) has been attracting researchers, scientist, and technology experts from both academia and industry to enhance the current ICT stakes and networking paradigm. The beauty of SDN is the division of Control and Data planes and make it easy for the engineers to modify the networking protocols without visiting onsite devices. Similarly, smart cities concept has been coined recently, where a plethora of smart devices will be connected and providing tons of services to the citizens, officials, and governmental departments. The Internet of Things (IoT) plays a vital role in guaranteeing such services. Few efforts have been made to merge SDN and IoT with the sole purpose of efficient Data retrieval and achieve remotely configurable networks. In this paper, we explicitly define the Internet of Software Defined Things architecture and bring it to Smart Cities as a use-case. Our 3-tier architecture consists of Data Collection, Data Management, and Application levels that are further connected via two intermediate levels working on SDN principles. Followed by the potentials of SDN and IoT for Smart Cities, we evaluated our proposed architecture using Spark and GraphX with Hadoop Ecosystem and the results shows that efficient transfer of Data over SDN for real-time processing is achieved. | Khan, Murad; Iqbal, Javed; Talha, Muhammad; Arshad, Muhammad; Diyan, Muhammad; Han, Kijun | Sarhad Univ Sci & Informat Technol, Dept Comp Sci, Peshawar, Kpk, Pakistan; King Saud Univ, Sci Res, Riyadh, Saudi Arabia; Sohar Univ, Dept Comp Sci, Sohar, Oman; Kyungpook Natl Univ, Sch Comp Sci & Engn, Daegu, South Korea | Talha, Muhammad/E-3273-2012; Khan, Murad/AAB-6060-2019; Arshad, Muhammad/Q-9915-2019; Diyan, Muhammad/AAM-5848-2021; Iqbal, Javed/K-6084-2019 | 56151971600; 58855585800; 59492752400; 23009421700; 26028317800; 7402963670 | murad.csit@suit.edu.pk;javed.ee@suit.edu.pk;mnaseem@ksu.edu.sa;amuhammad@soharuni.edu.om;m.diyan@netopia.knu.ac.kr;kjhan@knu.ac.kr; | INTERNATIONAL JOURNAL OF PARALLEL PROGRAMMING | INT J PARALLEL PROG | 0885-7458 | 1573-7640 | 48 | 2 | SCIE | COMPUTER SCIENCE, THEORY & METHODS | 2020 | 1.382 | 58.6 | 1.11 | 2025-06-25 | 11 | 18 | Software Defined Networks; Big data analytics; Internet of Things; Smart devices; Smart city | Big data analytics; Internet of Things; Smart city; Smart devices; Software Defined Networks | Big data; Data acquisition; Data Analytics; Data handling; Data transfer; Information management; Network architecture; Smart city; Software defined networking; Configurable networks; Governmental departments; Internet of thing (IOT); Networking protocols; Proposed architectures; Realtime processing; Smart devices; Technology experts; Internet of things | English | 2020 | 2020-04 | 10.1007/s10766-018-0573-y | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Letter | Coronavirus disease 2019 pneumonia may present as an acute exacerbation of idiopathic pulmonary fibrosis | Lee, Yong Hoon; Kim, Chang Ho; Lee, Jaehee | Kyungpook Natl Univ, Sch Med, Dept Internal Med, 680 Gukchaebosang Ro, Daegu 41944, South Korea | Lee, Jun Young/CAI-2335-2022; Lee, Jaehee/S-1697-2018 | 57199022948; 7409873555; 13805476000 | jaelee@knu.ac.kr; | JOURNAL OF THORACIC DISEASE | J THORAC DIS | 2072-1439 | 2077-6624 | 12 | 7 | SCIE | RESPIRATORY SYSTEM | 2020 | 2.895 | 58.6 | 0.41 | 2025-06-25 | 6 | 8 | hydroxychloroquine; levofloxacin; lopinavir plus ritonavir; methylprednisolone; piperacillin plus tazobactam; pirfenidone; aged; antibiotic therapy; artificial ventilation; bronchiectasis; case report; clinical article; computer assisted tomography; coronavirus disease 2019; coughing; disease exacerbation; dyspnea; fever; fibrosing alveolitis; human; Letter; male; pneumonia; real time reverse transcription polymerase chain reaction; thorax radiography | English | 2020 | 2020-07 | 10.21037/jtd-20-1658 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||||
| ○ | ○ | Article | On the nonexistence of pseudo-generalized quadrangles | In this paper, we consider the question of when a strongly regular graph with parameters ((s + 1)(st + 1), s(t + 1), s - 1, t +1) can exist. A strongly regular graph with such parameters is called a pseudo-generalized quadrangle. A pseudo-generalized quadrangle can be derived from a generalized quadrangle, but there are other examples which do not arise in this manner. If the graph is derived from a generalized quadrangle then t <= s(2) and s <= t(2), while for pseudo-generalized quadrangles we still have the former bound but not the latter. Previously, Neumaier has proved a bound for s which is cubic in t, but we improve this to one which is quadratic. The proof involves a careful analysis of cliques and cocliques in the graph. This improved bound eliminates many potential parameter sets which were otherwise feasible. (C) 2020 Elsevier Ltd. All rights reserved. | Guo, Ivan; Koolen, Jack H.; Markowsky, Greg; Park, Jongyook | USTC, Wen Tsun Wu Key Lab CAS, Hefei, Peoples R China; USTC, Sch Math Sci, Hefei, Peoples R China; Monash Univ, Sch Math, Melbourne, Vic, Australia; Kyungpook Natl Univ, Dept Math, Daegu 41566, South Korea | ; Markowsky, Greg/AAR-6391-2021 | 54994965200; 7004991766; 24481803700; 36091826300 | ivan.guo@monash.edu;koolen@ustc.edu.cn;greg.markowsky@monash.edu;jongyook@knu.ac.kr; | EUROPEAN JOURNAL OF COMBINATORICS | EUR J COMBIN | 0195-6698 | 1095-9971 | 89 | SCIE | MATHEMATICS | 2020 | 0.847 | 58.6 | 0 | 2025-06-25 | 0 | 0 | English | 2020 | 2020-10 | 10.1016/j.ejc.2020.103128 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||||
| ○ | ○ | Article | Reconfiguring graph homomorphisms on the sphere | Given a loop-free graph H, the reconfiguration problem for homomorphisms to H (also called H-colourings) asks: given two H-colourings f of g of a graph G, is it possible to transform f into g by a sequence of single-vertex colour changes such that every intermediate mapping is an H-colouring? This problem is known to be polynomial-time solvable for a wide variety of graphs H (e.g. all C-4-free graphs) but only a handful of hard cases are known. We prove that this problem is PSPACE-complete whenever H is a K-2,K-3-free quadrangulation of the 2-sphere (equivalently, the plane) which is not a 4-cycle. From this result, we deduce an analogous statement for non-bipartite K-2,K-3-free quadrangulations of the projective plane. This include several interesting classes of graphs, such as odd wheels, for which the complexity was known, and 4-chromatic generalized Mycielski graphs, for which it was not. If we instead consider graphs G and H with loops on every vertex (i.e. reflexive graphs), then the reconfiguration problem is defined in a similar way except that a vertex can only change its colour to a neighbour of its current colour. In this setting, we use similar ideas to show that the reconfiguration problem for H-colourings is PSPACE-complete whenever H is a reflexive K-4-free triangulation of the 2-sphere which is not a reflexive triangle. This proof applies more generally to reflexive graphs which, roughly speaking, resemble a triangulation locally around a particular vertex. This provides the first graphs for which the reconfiguration problem is known to be PSPACE-complete for reflexive instances. (C) 2020 Elsevier Ltd. All rights reserved. | Lee, Jae-Baek; Noel, Jonathan A.; Siggers, Mark | Kyungpook Natl Univ, Coll Nat Sci, Daegu 702701, South Korea; Univ Warwick, Dept Comp Sci, Coventry CV4 7AL, W Midlands, England; Univ Warwick, DIMAP, Coventry CV4 7AL, W Midlands, England; Univ Warwick, Math Inst, Coventry CV4 7AL, W Midlands, England | Lee, Juhyung/JQV-8143-2023 | 57201389745; 36998759100; 14519683600 | dlwoqor0923@gmail.com;j.noel@warwick.ac.uk;mhsiggers@knu.ac.kr; | EUROPEAN JOURNAL OF COMBINATORICS | EUR J COMBIN | 0195-6698 | 1095-9971 | 86 | SCIE | MATHEMATICS | 2020 | 0.847 | 58.6 | 1.22 | 2025-06-25 | 5 | 6 | English | 2020 | 2020-05 | 10.1016/j.ejc.2020.103086 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||||
| ○ | ○ | Article | Building worker power for day laborers in South Korea's construction industry | This article examines how unions build worker power for day laborers in South Korea's construction industry in the context of widespread informality. Drawing upon regional case studies of the Korean Construction Workers Union (KCWU), we find that construction day laborers experience poor working conditions and rampant employment violations under multiple layers of subcontracting that enable capital to bypass existing labor laws and regulations. Despite the regulatory challenges of complex subcontracting systems, unions can still exert direct pressure on firms to improve informal working conditions by securing and enforcing creative collective agreements. Key to this process is the development of regionally-specific forms of worker power that target firms located higher up the subcontracting chain to take responsibility for informal working conditions. Although the scope of influence varies depending on the type of worker power that unions cultivate (e.g. structural, associational, and symbolic), each form of worker power has enabled unions in different regional contexts to establish uniform standards regarding job quality and job security despite formal restrictions on the legal authority of unions as bargaining agents for informal workers. While such approaches require a high level of organizational and strategic capacity, they demonstrate the ongoing relevance of unions in challenging the global turn to informal work through workplace organizing and collective bargaining. | Yi, Sohoon; Chun, Jennifer Jihye | Kyungpook Natl Univ, Daegu, South Korea; Univ Calif Los Angeles, Los Angeles, CA 90024 USA | ; Yi, Sohoon/AAS-7454-2020 | 57191161678; 23982022300 | sohoon.yi@knu.ac.kr; | INTERNATIONAL JOURNAL OF COMPARATIVE SOCIOLOGY | INT J COMP SOCIOL | 0020-7152 | 1745-2554 | 61 | 2-3 | SSCI | SOCIOLOGY | 2020 | 1.722 | 58.7 | 0.14 | 2025-06-25 | 4 | 3 | Construction industry; day laborers; informal workers; subcontracting; South Korea; unions; worker power | Construction industry; day laborers; informal workers; South Korea; subcontracting; unions; worker power | South Korea; construction industry; employment; informal sector; labor policy; labor relations; regulatory framework; trade union; working conditions | English | 2020 | 2020-04 | 10.1177/0020715219889383 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Numerical Investigation of the Pressure Drop Characteristics of Isothermal Ice Slurry Flow under Variable Ice Particle Diameter | Ice slurry is an advanced secondary refrigerant that has been attracting considerable attention for the past decade due to the growing concerns regarding energy shortage and environmental protection. To stimulate the potential applications of ice slurry, the corresponding pressure drop of this refrigerant must be comprehensively investigated. The flow of ice slurry is a complex phenomenon that is affected by various parameters, including flow velocity, ice particle size, and ice mass fraction. To predict the pressure drop of ice slurry flow in pipes, a mixture computational fluid dynamic model was adopted to simulate a two-phase flow without considering ice melting. The numerical calculations were performed on a wide range of six ice particle sizes (0.1, 0.3, 0.5, 0.75, 1, and 1.2 mm) and ice mass fraction ranging within 5%-20% in the laminar range of ice slurry flow. The numerical model was validated using experimental data. Results showed that the ice volumetric loading and flow velocity have a direct effect on pressure drop; it increases with the increase in volumetric concentration and flow velocity. The findings also confirmed that for constant ice mass fraction and flow velocity, the pressure drop is directly and inversely related to the particle and pipe diameters, respectively. Moreover, the rise in pressure drop is more significant for large ice particle diameter in comparison to smaller size ice particles at high values of ice concentration and flow velocity. | Akhtar, Shehnaz; Cheema, Taqi Ahmad; Ali, Haider; Kwak, Moon Kyu; Park, Cheol Woo | Kyungpook Natl Univ, Sch Mech Engn, 80 Daehakro Bukgu, Daegu 41566, South Korea; GIK Inst Engn Sci & Technol, Dept Mech Engn, Topi 23460, Pakistan; Norwegian Univ Sci & Technol, Dept Chem Engn, NO-7491 Trondheim, Norway | ; Akhtar, Shehnaz/IST-0523-2023; Kwak, Moon/AGQ-6058-2022 | 57202696797; 36522492600; 59272327100; 57203947984; 7408416474 | shehnazakhtar073@gmail.com;taqi_cheema39@hotmail.com;haider.ali@ntnu.no;mkkwak@knu.ac.kr;chwoopark@knu.ac.kr; | JOURNAL OF CHEMISTRY | J CHEM-NY | 2090-9063 | 2090-9071 | 2020 | SCIE | CHEMISTRY, MULTIDISCIPLINARY | 2020 | 2.506 | 58.7 | 0.21 | 2025-06-25 | 7 | 8 | THERMO-FLUIDIC CHARACTERISTICS; PHASE-CHANGE MATERIALS; HEAT-TRANSFER; ENERGY-CONSUMPTION; MIXTURE MODEL; 2-PHASE FLOW; PERFORMANCE; BUILDINGS; STORAGE; SYSTEM | English | 2020 | 2020-11-11 | 10.1155/2020/6154152 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||||
| ○ | ○ | Article | Quantitative analysis of observed signatures in phonon reflection experiment | For phonons propagating in a crystal at low temperature, we develop a phonon reflection model and an analysis framework to fully understand reflection peaks from underlying physics principles. Our study shows that the specular reflection structure of peaks contains detailed information about properties of the crystal material, and provides a solid quantitative link between phonon theory and experimental signals. For both kinds of experiments that either use crystal as a particle detector or as a target material for study, this analysis provides a novel and essential method to understand the experimental signatures. | Li, Jin | Kyungpook Natl Univ, Dept Phys, Daegu 41566, South Korea | 55870040700 | lijin@knu.ac.kr; | JOURNAL OF PHYSICS-CONDENSED MATTER | J PHYS-CONDENS MAT | 0953-8984 | 1361-648X | 33 | 5 | SCIE | PHYSICS, CONDENSED MATTER | 2020 | 2.333 | 58.7 | 0 | 2025-06-25 | 0 | 0 | phonon; reflection; cryogenic detectors; lattice dynamics | SAPPHIRE; TRANSMISSION; SILICON; PULSES; QUARTZ | cryogenic detectors; lattice dynamics; phonon; reflection | article; crystal structure; low temperature; phonon; physics; quantitative analysis; theoretical study | English | 2020 | 2020-02-03 | 10.1088/1361-648x/abbf2a | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Comparative effect of different insecticides on the growth and yield of soybeans | The yield of soybeans, an economically important crop worldwide, is substantially reduced by different abiotic and biotic factors, including insect pests. Different insecticides are applied to control soybean insect pests. The application of insecticides may also affect the plants along with the pests. The effects of four insecticides (fenitrothion, etofenprox, thiamethoxam, and lambda-cyhalothrin-cum-thiamethoxam; LT) on the growth and yield of two soybean cultivars over two years were investigated. The plant height (PH), pod number, shoot dry matter without seed (SDWS), total shoot dry matter, seed yield per plant (SYP), harvest index (HI), and hundred-seed weight significantly varied with the insecticides. However, the primary branch number was not significantly affected by the insecticides. Significant interactions between the year and insecticide, except for the SDWS and HI, indicated that the growing environment also affected the influence of the insecticides. The PH was significantly tall in the thiamethoxam (50.07 cm) and short for the LT (46.66 cm) application. The SYP was significantly high for the LT (20.51 g) and low for the fenitrothion (11.51 g). This study showed that the type of insecticide could significantly affect the plant growth and yield of the soybean. | Dhungana, Sanjeev Kumar; Adhikari, Bishnu; Adhikari, Arjun; Kim, Il-Doo; Kim, Jeong-Ho; Shin, Dong-Hyun | Kyungpook Natl Univ, Sch Appl Biosci, Daegu, South Korea; Rural Dev Adm, Natl Inst Crop Sci, Miryang, South Korea; Kyungpook Natl Univ, Int Inst Res & Dev, Daegu, South Korea; Konkuk Univ, Dept Green Technol Convergence, Chungju Si, Chungcheongbuk, South Korea | Kim, Il-Doo/C-1850-2011; Adhikari, Arjun/AAV-6297-2021; Adhikari, Arjun/JCO-3306-2023; Dhungana, Sanjeev/O-4097-2017; Kim, Jeong-Ho/A-7641-2018; Adhikari, Bishnu/LXV-9116-2024; Dhungana, Sanjeev Kumar/O-4097-2017 | 56269940800; 57195228054; 57195601415; 56269995600; 57221537227; 7403352903 | dhshin@knu.ac.kr; | PLANT PROTECTION SCIENCE | PLANT PROTECT SCI | 1212-2580 | 1805-9341 | 56 | 3 | SCIE | AGRONOMY;PLANT SCIENCES | 2020 | 1.464 | 58.8 | 0.27 | 2025-06-25 | 6 | 4 | crop; insecticide spray; harvest index; plant height; pod number; shoot dry matter | EARLY SEEDLING GROWTH; NEONICOTINOID INSECTICIDES; PLANT-GROWTH; STINK BUG; GERMINATION; THIAMETHOXAM; METABOLISM; HORMONES; FENITROTHION; PESTICIDES | Crop; Harvest index; Insecticide spray; Plant height; Pod number; Shoot dry matter | English | 2020 | 2020 | 10.17221/77/2019-pps | 바로가기 | 바로가기 | 바로가기 | 바로가기 |
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