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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
Article Enhancing tensile strength and ductility of high-speed-extruded Mg-5Bi-2Al through trace Mn addition The Mg-5Bi-2Al (BA52, wt%) has shown excellent extrudability despite its high alloying content. This work is conducted to enhance the strength and ductility of BA52 extrudate, which is fabricated at a very high speed, through the addition of a trace amount of Mn. The addition of 0.2 wt% Mn to BA52 causes substantial changes in the microstructure of a homogenized billet. These variations include grain refinement, formation of a semi continuous coarse-particle network along grain boundaries, and formation of fine-particle-depletion regions near the grain boundaries. These microstructural variations provide abundant nucleation sites for recrystallization near the grain boundaries during high-speed extrusion (exit speed: 70 m/min). Consequently, grain refinement of the extrudate occurs from 29.7 to 20.0 mu m with Mn addition. The BAM520 extrudate has similar basal fiber texture and internal strain energy with the BA52 extrudate. However, the former exhibits an improved tensile strength (-20 MPa greater) than the latter, which is primarily ascribed to the decreased grain size. This work demonstrates that minimal Mn addition considerably facilitates dynamic recrystallization during hot extrusion, thus improving the strength and elongation of high-speed-extruded BA52. Jin, Sang-Cheol; Cha, Jae Won; Joo, Soo-Hyun; Park, Sung Hyuk Kyungpook Natl Univ, Sch Mat Sci & Engn, Daegu 41566, South Korea; Dankook Univ, Dept Mat Sci & Engn, Cheonan 31116, South Korea Park, Sung-Hyuk/AAE-6726-2022; Joo, Soo-Hyun/E-8292-2013 57198914140; 57221282466; 35738843100; 54786002500 sh.park@knu.ac.kr; MATERIALS CHARACTERIZATION MATER CHARACT 1044-5803 1873-4189 181 SCIE MATERIALS SCIENCE, CHARACTERIZATION & TESTING;MATERIALS SCIENCE, MULTIDISCIPLINARY;METALLURGY & METALLURGICAL ENGINEERING 2021 4.537 13.3 0.8 2025-07-30 13 13 High-speed extrusion; Mg-Bi-Al; Mn addition; Tensile properties; Dynamic recrystallization MECHANICAL-PROPERTIES; DYNAMIC RECRYSTALLIZATION; EXTRUSION TEMPERATURE; DEFORMATION-BEHAVIOR; GRAIN-REFINEMENT; YIELD ASYMMETRY; MICROSTRUCTURE; MAGNESIUM; ALLOY; TEXTURE Dynamic recrystallization; High-speed extrusion; Mg–Bi–Al; Mn addition; Tensile properties Ductility; Extrusion; Grain boundaries; Grain refinement; Grain size and shape; Speed; Strain energy; Tensile strength; Textures; Dynamic recrystallisation; Extrudability; Extrudates; Grain-boundaries; Grains refinement; High Speed; High-speed extrusion; Mg–bi–al; Mn addition; Strength and ductilities; Dynamic recrystallization English 2021 2021-11 10.1016/j.matchar.2021.111500 바로가기 바로가기 바로가기 바로가기
Article Interpretation of the statistical/dynamical prediction for seasonal tropical storm frequency in the western North Pacific Despite the improving techniques for seasonal prediction of tropical storm frequency, attention seems focused on accuracy rather than on forecast interpretation. This study aims to show how seasonal predictions from a hybrid model, i.e. statistical/dynamical model, can be interpreted with probability distributions. The tropical storm frequency in the western North Pacific is modeled with environmental predictors through multiple linear regression. For a demonstration of the probabilistic structure of the prediction result, the forty-two member ensemble predictions from the Glosea5 model for June-July-August in 2020 are used as the dynamical input. Rather than dealing with the expected frequency, this study introduces the predictive probability for a single value of the frequency. From as many probability distributions, a marginal probability distribution is obtained as the final predictive probability distribution. The probability distribution is then compared to the climatological reference by terciles. Additionally, predictive probability distributions made with the individual predictors provide helpful information on how each contributes to the final prediction. This probabilistic interpretation procedure is expected to be effectively used for improving any hybrid approach. Kang, Namyoung; Elsner, James B. Kyungpook Natl Univ, Dept Geog, Daegu 41566, South Korea; Florida State Univ, Dept Geog, Tallahassee, FL 32306 USA Kang, Namyoung/J-3272-2017 nkang.fsu@gmail.com; ENVIRONMENTAL RESEARCH LETTERS ENVIRON RES LETT 1748-9326 16 1 SCIE ENVIRONMENTAL SCIENCES;METEOROLOGY & ATMOSPHERIC SCIENCES 2021 6.947 13.3 1 tropical storm; western North Pacific; seasonal prediction; hybrid model; predictive probability distribution HURRICANE FREQUENCY; CYCLONE ACTIVITY; OSCILLATION English 2021 2021-01 10.1088/1748-9326/abcdd3 바로가기 바로가기 바로가기
Article Announcement of formal controls as phase-shifting perceptions: their determinants and moderating role in the context of mobile loafing Purpose Mobile loafing, or non-work-related mobile computing, is deviant workplace behavior that can reduce productivity and increase cybersecurity risks. To thwart mobile loafing, organizations often adopt formal controls that encompass rules and policies. These formal controls can serve as a phase-shifting event. Phase shifting is a process where individuals reevaluate and revise their perceptions of the regulation of deviant behaviors. Despite the importance of understanding this process, little research has examined the announcement of formal controls as an impetus for phase shifting. The primary objectives of this study were to induce a phase-shifting perception in an organizational setting and explore its determinants and moderating role in the context of mobile loafing. Design/methodology/approach The authors proposed and tested a model using two-wave data collected from 231 Amazon Mechanical Turk workers. To test the research hypotheses, they used covariance-based structural equation modeling and logistic regression. Findings The authors found that peer's mobile loafing and neutralization positively influence mobile-loafing intention before and after the announcement of formal controls. This research also shows that the higher an employee's neutralization, the likelier they perceive the announcement of formal controls as phase shifting. Also, the authors found that the moderating effect of phase-shifting perceptions functions in such a way that the relationship between T1 and T2 mobile-loafing intention is weaker when employees perceive the announcement of formal controls as a phase-shifting event. Practical implications The authors' results provide managers with useful insights into effectively using formal controls to mitigate employees' deviant behavior. To effectively use formal controls, managers should articulate formal controls that can trigger employees to revise their perceptions of counterproductive workplace behavior policies. Originality/value This study is one of the first in information systems research to empirically examine the announcement of formal controls as a phase-shifting event and explore its antecedents and moderating role in the context of deviant workplace behavior in general and mobile loafing in particular. Kwak, Dong-Heon; Lee, Saerom; Ma, Xiao; Lee, Jaeung; Lara, Khansa; Brandyberry, Alan Kent State Univ, Sch Management, Coll Business Adm & Grad, Kent, OH 44242 USA; Kyungpook Natl Univ, Daegu, South Korea; Univ Houston, CT Bauer Coll Business, Houston, TX USA; Louisiana Tech Univ, Ruston, LA 71270 USA; Virginia Tech Univ, RB Pamplin Coll Business, Blacksburg, VA USA; Kent State Univ, Kent, OH 44242 USA Ma, Xiao/H-8302-2015 57188818439; 56023428700; 55755221400; 56681231700; 24759114300; 6506911228 dkwak@kent.edu;saeromlee@knu.ac.kr;xma@bauer.uh.edu;jakelee@latech.edu;arak@vt.edu;abrandyb@kent.edu; INTERNET RESEARCH INTERNET RES 1066-2243 31 5 SSCI;SCIE BUSINESS;COMPUTER SCIENCE, INFORMATION SYSTEMS;TELECOMMUNICATIONS 2021 6.353 13.4 0.77 2025-07-30 9 9 Phase-shifting perceptions; Dual-systems theory; Formal controls; Mobile loafing COMMON METHOD VARIANCE; PERSONAL INTERNET USE; IMPULSIVE DETERMINANTS; TECHNOLOGY ACCEPTANCE; SYSTEMS; WORKPLACE; EMPLOYEES; IMPACT; MODEL; NEUTRALIZATION Dual-systems theory; Formal controls; Mobile loafing; Phase-shifting perceptions English 2021 2021-11-01 10.1108/intr-10-2020-0581 바로가기 바로가기 바로가기 바로가기
Article Antioxidative and anti-inflammatory activity of psiguadial B and its halogenated analogues as potential neuroprotective agents Psiguadial B (8), and its fluoro- (8a), chloro- (8b), and bromo- (8c) derivatives were synthesized using a sodium acetate-catalyzed single step coupling of three components: beta-caryophyllene (5), diformylphloroglucinol (11), and benzaldehyde (12). These compounds efficiently and dose-dependently decreased H2O2-induced cell death, a quantitative marker of cell death, in primary cultures of mouse cortical neurons. Psiguadial B also decreased neuronal death and accumulation of ROS induced by FeCl2 in cortical cultures. The in vitro effects of these compounds in lipopolysaccharide (LPS)-induced expression of nitric oxide (NO), and TNF-alpha and IL-6 by suppressing the NF-kappa B pathway in immune cells demonstrated their antioxidative and anti-inflammatory activity. The present findings warrant further research on the development of psiguadial B-based neuroprotective agents for the treatment of neurodegenerative diseases, acute brain injuries and immunological disorders. Kadayat, Tara Man; Kim, Dong Eun; Lee, Sang Bong; Jung, Kyungjin; Park, Sang Eun; Hong, Ji-Ye; Kim, Jina; Shrestha, Aarajana; Kim, Dong-Su; An, Hongchan; Kim, Nayeon; Lee, Su-Jeong; Kwon, Sugyeong; Kim, Suhui; Hwang, Jun Yeon; Kim, Shinae; Hahn, Dongyup; Choi, Hyukjae; Nam, Sang-Jip; Jeon, Yong Hyun; Hwang, Jung Jin; Cho, Sung Jin; Chin, Jungwook Daegu Gyeongbuk Med Innovat Fdn, New Drug Dev Ctr, Daegu 41061, South Korea; Asan Med Ctr, Asan Inst Life Sci, Seoul 05505, South Korea; Gyeongbuk Inst Bio Ind, Vaccine Commercializat Ctr, Andong 33618, South Korea; Korea Res Inst Chem Technol, Therapeut & Biotechnol Div, Daejeon 34114, South Korea; Kyungpook Natl Univ, Sch Food Sci & Biotechnol, Daegu 41566, South Korea; Yeungnam Univ, Coll Pharm, Gyeongbuk 38541, South Korea; Ewha Womans Univ, Dept Chem & Nanosci, Seoul 03760, South Korea; Daegu Gyeongbuk Med Innovat Fdn, Lab Anim Ctr, Daegu 41061, South Korea; Univ Ulsan, Asan Med Ctr, Dept Convergence Med, Coll Med, Seoul 05505, South Korea; Korea Inst Sci & Technol, Convergence Res Ctr Diag Treatment & Care Syst De, Seoul 02792, South Korea Kim, Dong-Su/M-6819-2017; Chin, Jungwook/E-7611-2013; Lee, Sang/I-8954-2014; Jeon, Yong/N-6910-2019; Kim, SOOCHI/AAD-6959-2020; Lee, sujeong/KUD-4735-2024; An, Hongchan/J-3148-2014 57201881897; 57224956473; 57224954265; 57203728292; 57224955448; 57224948144; 56949261900; 56604752500; 57223664495; 40260891900; 57224952267; 57204076126; 56645470600; 57224948890; 56748085900; 57203773299; 36554163400; 7404339587; 57208839798; 57224951685; 7403897177; 58735369700; 36554007700 jjhwang@amc.seoul.kr;sjcho@kist.re.kr;jwchin@dgmif.re.kr; BIOORGANIC CHEMISTRY BIOORG CHEM 0045-2068 1090-2120 113 SCIE BIOCHEMISTRY & MOLECULAR BIOLOGY;CHEMISTRY, ORGANIC 2021 5.307 13.4 0.16 2025-07-30 2 2 Psiguadial B; Reactive oxygen species; Antioxidative effect; Anti-inflammatory effect; Neuroprotective agent; Short synthetic route 3 UNUSUAL MEROTERPENOIDS; PSIDIUM-GUAJAVA L.; NEURODEGENERATIVE DISEASES; BIOMIMETIC SYNTHESIS; OXIDATIVE STRESS; LEAVES; EXTRACTS Anti-inflammatory effect; Antioxidative effect; Neuroprotective agent; Psiguadial B; Reactive oxygen species; Short synthetic route Animals; Anti-Inflammatory Agents; Antioxidants; Cell Proliferation; Cell Survival; Cerebral Cortex; Ferrous Compounds; Halogenation; Hydrogen Peroxide; Lipopolysaccharides; Mice; Mice, Inbred ICR; Neuroprotective Agents; NF-kappa B; Nitric Oxide; Psidium; Reactive Oxygen Species; Terpenes; Tumor Necrosis Factor-alpha; acetic acid; antiinflammatory agent; antioxidant; benzaldehyde; bromo psiguadial B; caryophyllene; chloro psiguadial B; dexamethasone; diformylphloroglucinol; ferric chloride; fluoro psiguadial B; hydrogen peroxide; immunoglobulin enhancer binding protein; interleukin 6; lactate dehydrogenase; lipopolysaccharide; neuroprotective agent; nitric oxide; psiguadial B; reactive oxygen metabolite; tumor necrosis factor; unclassified drug; antiinflammatory agent; antioxidant; ferrous chloride; ferrous ion; hydrogen peroxide; immunoglobulin enhancer binding protein; lipopolysaccharide; neuroprotective agent; nitric oxide; psiguadial B; reactive oxygen metabolite; terpene; tumor necrosis factor; A2780 cell line; animal cell; animal experiment; antiinflammatory activity; antioxidant activity; Article; brain cell culture; CHO cell line; controlled study; cyclization; degenerative disease; dose; drug synthesis; enzyme assay; female; halogenation; immunocompetent cell; in vitro study; lactate dehydrogenase blood level; mouse; nerve degeneration; neuroapoptosis; neuroprotection; NF kB signaling; nonhuman; oxidative stress; primary culture; promoter region; protein expression; RAW 264.7 cell line; reporter gene; thyroid cancer cell line; animal; brain cortex; cell proliferation; cell survival; chemistry; cytology; drug effect; halogenation; Institute for Cancer Research mouse; metabolism; Psidium; synthesis English 2021 2021-08 10.1016/j.bioorg.2021.105027 바로가기 바로가기 바로가기 바로가기
Article Flavonoids from the peels of Citrus unshiu Markov. and their inhibitory effects on RANKL-induced osteoclastogenesis through the downregulation of c-Fos signaling in vitro Phytochemical investigation of Citrus unshiu peels led to the isolation of eight new flavonols (7-9, 11-15) and sixteen known compounds (1-6, 10, 16-24). Their structures were elucidated using spectroscopic analysis (1D, 2D NMR, and HR-MS). Besides, all isolated compounds (1-24) were evaluated for their inhibitory effects on receptor activator of RANKL-induced osteoclastogenesis in BMMs. Among them, dimethylmikanin (1), quercetogetin (2), 3,3',4',5,7,8-hexamethoxyflavone (3), 3-methoxynobiletin (4) showed a significant inhibitory effect on RANKL-induced osteoclast differentiation at a concentration of 10 mu M. Moreover, 3-methoxynobiletin (4) suppressed RANKL-induced osteoclastogenesis by decreasing the number of osteoclasts and osteoclast actin-ring formation in a dose-dependent manner without causing any cytotoxic effects on BMMs. At the molecular level, 3-methoxynobiletin (4) inhibited RANKL-induced c-Fos expression and subsequently NFATc1 activation, as well as the expression of osteoclastogenesis-related marker genes c-Src and CtsK. These findings suggested that 3-methoxynobiletin (4) attenuated osteoclast differentiation by inhibiting RANKL-mediated c-Fos signaling and that it may have therapeutic potential for treating or preventing bone resorption-related diseases, such as osteoporosis. Vu, Thi Oanh; Tran, Phuong Thao; Seo, Wonyoung; Lee, Jeong Hyung; Min, Byung Sun; Kim, Jeong Ah Kyungpook Natl Univ, Res Inst Pharmaceut Sci, Coll Pharm, Daegu 41566, South Korea; Kyungpook Natl Univ, Coll Pharm, VOICE MRC, Vessel Organ Interact Res Ctr, Daegu 41566, South Korea; Kangwon Natl Univ, Coll Nat Sci, Dept Biochem, Chunchon 24341, Gangwon Do, South Korea; Daegu Catholic Univ, Drug Res & Dev Ctr, Coll Pharm, Gyeongbuk 38430, South Korea 57208535085; 56701990600; 57218325002; 26662839900; 55663638200; 24722570900 jkim6923@knu.ac.kr; BIOORGANIC CHEMISTRY BIOORG CHEM 0045-2068 1090-2120 107 SCIE BIOCHEMISTRY & MOLECULAR BIOLOGY;CHEMISTRY, ORGANIC 2021 5.307 13.4 0.63 2025-07-30 10 10 Citrus unshiu peels; Flavonols; Flavones; RANKL; Osteoclastogenesis Citrus unshiu peels; Flavones; Flavonols; Osteoclastogenesis; RANKL Animals; Bone Marrow Cells; Cell Differentiation; Citrus; Down-Regulation; Flavonoids; Fruit; Mice; Molecular Conformation; Osteoclasts; Osteogenesis; Plant Extracts; Proto-Oncogene Proteins c-fos; RANK Ligand; RAW 264.7 Cells; Signal Transduction; Structure-Activity Relationship; 3 methoxynobiletin; 3 methoxynobiletin (3,5,6,7,8,3',4' heptamethoxyflavone); 3,3',4',5,7,8 hexamethoxyflavone; 5,6,7,4' tetramethoxyflavone; 5,7,8,2',3',4',5' heptamethoxyflavone; 6 demethoxynobiletin (3',4',5,7,8 pentamethoxyflavone); 6 demethoxytangeretin; citrusunshin a; citrusunshin b; citrusunshin c; citrusunshin d; citrusunshin e; citrusunshin f; citrusunshin g; citrusunshin h; dimethylmikanin; diosmetin 6 c glucoside; diosmetin 8 c glucoside; flavonoid; isorhamnetin 7 o rutinoside; limocitrunshin; maslinic acid; nobiletin; osteoclast differentiation factor; protein c fos; quercetogetin 3,3',4',5,7,8 hexamethoxyflavone; rutoside; tangeretin; unclassified drug; vitexin 2'' o xyloside; flavonoid; osteoclast differentiation factor; plant extract; protein c fos; animal cell; Article; bone marrow derived macrophage; carbon nuclear magnetic resonance; controlled study; dose response; drug isolation; drug structure; fruit peel; in vitro study; male; mass spectrometry; mouse; nonhuman; oncogene src; osteoclast; osteoclastogenesis; osteolysis; priority journal; protein expression; proton nuclear magnetic resonance; satsuma; signal transduction; animal; bone development; bone marrow cell; cell differentiation; chemistry; Citrus; conformation; cytology; down regulation; drug effect; fruit; isolation and purification; metabolism; RAW 264.7 cell line; signal transduction; structure activity relation English 2021 2021-02 10.1016/j.bioorg.2020.104613 바로가기 바로가기 바로가기 바로가기
Article Synthesis and evaluation of curcumin-based near-infrared fluorescent probes for the in vivo optical imaging of amyloid-β plaques The abnormal self-assembly of amyloid-beta (A beta) peptides into oligomers, as well as insoluble fibrils, has been identified as a key factor for monitoring the progression of Alzheimer's disease (AD). The noninvasive imaging of A beta aggregates utilizing chemical probes can be a powerful and practical technique for accurately diagnosing and monitoring the progress of AD, as well as evaluating the effectiveness of therapeutic drug candidates in treating or managing it. Particularly, the near-infrared (NIR) fluorescence imaging of A beta plaques is a potentially promising approach toward the efficient detection of the biomarker. In this study, we describe a new NIR fluorophore, which was based on curcumin derivatives. The fluorophore is equipped with desirable optical properties for in vivo brain imaging. The emission wavelength of the probe, 8b, is 667 nm, and its fluorescent intensity is significantly increased through binding with the A beta aggregates. The probe allows the clear visualization of the A beta plaques 10 min post administration, and the intensity of the fluorescent signal in the brain of a 5XFAD transgenic mouse model is more than three times higher than that of the normal control group. These results demonstrate that the designed probe can be an effective tool for visualizing A beta plaques, as well as investigating the pathological progress of AD. Park, Yong Dae; Kinger, Mayank; Min, Changho; Lee, Sang Yeob; Byun, Youngjoo; Park, Jin Woo; Jeon, Jongho Korea Atom Energy Res Inst, Adv Radiat Technol Inst, Jeongeup 580185, South Korea; Chaudhary Bansi Lal Univ, Dept Chem, Bhiwani 127021, Haryana, India; Kyungpook Natl Univ, Dept Appl Chem, Coll Engn, Daegu 41566, South Korea; Korea Univ, Dept Pharm, Coll Pharm, 2511 Sejong Ro, Sejong 30019, South Korea; BioActs Co Ltd, Cheongneung Daero, Incheon 21666, South Korea 16425858100; 10045258300; 57222256181; 57210801270; 7102768481; 57209247977; 35082028100 jeonj@knu.ac.kr; BIOORGANIC CHEMISTRY BIOORG CHEM 0045-2068 1090-2120 115 SCIE BIOCHEMISTRY & MOLECULAR BIOLOGY;CHEMISTRY, ORGANIC 2021 5.307 13.4 1.57 2025-07-30 24 22 Curcumin; Diagnosis; Fluorescent probe; In vivo imaging; Alzheimer's disease ALZHEIMERS-DISEASE; EARLY-DIAGNOSIS; CROSS-LINKING; BIOMARKERS Alzheimer's disease; Curcumin; Diagnosis; Fluorescent probe; In vivo imaging Alzheimer Disease; Amyloid beta-Peptides; Animals; Binding Sites; Brain; Curcumin; Female; Fluorescent Dyes; Humans; Mice; Mice, Transgenic; Molecular Docking Simulation; Optical Imaging; Protein Aggregates; Spectroscopy, Near-Infrared; amyloid beta protein; curcumin; fluorescent dye; protein aggregate; Alzheimer disease; animal; binding site; brain; chemistry; diagnostic imaging; female; fluorescence imaging; human; metabolism; molecular docking; mouse; near infrared spectroscopy; pathology; procedures; synthesis; transgenic mouse English 2021 2021-10 10.1016/j.bioorg.2021.105167 바로가기 바로가기 바로가기 바로가기
Article Antifungal and antiaflatoxigenic properties of naphthoquinones toward Aspergillus flavus and their mode of inhibitory action on aflatoxin biosynthesis Aflatoxins, currently thought to be the strongest natural carcinogens widely found in a variety of foods and feedstuffs, cause significant health problems to humans and animals alike. Prevention strategies for aflatoxin contamination are important for food safety issues, and control methods are continuously being developed and improved. In this study, the antifungal effects of six 1,4-naphthoquinones (1,4-NQ) on Aspergillus flavus growth were measured and it was confirmed whether similar structural moieties produced similar level of antifungal effects and whether these antifungal activities would be related to the presence of aflatoxin-producing ability in Aspergillus spp. Among the treated 1,4-NQs, only 5-hydroxy-2-methyl-1,4-NQ showed potent inhibitory effect on aflatoxin production with strong antifungal effects. Regarding 2-methyl-1,4-NQ, antifungal effects were observed, but aflatoxin production increased when the treated concentration of 2-methyl-1,4-NQ increased. The inhibitory effect of 5-hydroxy-2-methyl-1,4-NQ on aflatoxin production was primarily resulted in inhibiting the expression of aflC, which is codes for the enzyme polyketide synthase involved in the early stages of the aflatoxin biosynthesis pathway. Furthermore, 5-hydroxy-2-methyl-1,4-NQ inhibits erg28 expression, which codes for 14-alpha-demethylase, a precursor for ergosterol synthesis in fungal membrane components. For future practical uses, it is essential to study the efficacy of 5-hydroxy-2-methyl-1,4-NQ in storage containers on food systems and safety profile on mammalian system. Kim, Gayoung; Lee, Sung-Eun Kyungpook Natl Univ, Sch Appl Biosci, Daegu 41566, South Korea 57211274816; 55890041600 selpest@knu.ac.kr; FOOD CONTROL FOOD CONTROL 0956-7135 1873-7129 119 SCIE FOOD SCIENCE & TECHNOLOGY 2021 6.652 13.5 1.11 2025-07-30 17 19 Aflatoxins; Aspergillus flavus; 1,4-Naphthoquinones; 5-Hydroxy-2-methyl-1,4-naphthoquinones; Antiaflatoxigenic activity ORGANIC-ACIDS; RESISTANCE 1,4-Naphthoquinones; 5-Hydroxy-2-methyl-1,4- naphthoquinones; Aflatoxins; Antiaflatoxigenic activity; Aspergillus flavus English 2021 2021-01 10.1016/j.foodcont.2020.107506 바로가기 바로가기 바로가기 바로가기
Review Abiotic stress-induced anthocyanins in plants: Their role in tolerance to abiotic stresses Abiotic stresses, such as heat, drought, salinity, low temperature, and heavy metals, inhibit plant growth and reduce crop productivity. Abiotic stresses are becoming increasingly extreme worldwide due to the ongoing deterioration of the global climate and the increase in agrochemical utilization and industrialization. Plants grown in fields are affected by one or more abiotic stresses. The consequent stress response of plants induces reactive oxygen species (ROS), which are then used as signaling molecules to activate stress-tolerance mechanism. However, under extreme stress conditions, ROS are overproduced and cause oxidative damage to plants. In such conditions, plants produce anthocyanins after ROS signaling via the transcription of anthocyanin biosynthesis genes. These anthocyanins are then utilized in antioxidant activities by scavenging excess ROS for their sustainability. In this review, we discuss the physiological, biochemical, and molecular mechanisms underlying abiotic stress-induced anthocyanins in plants and their role in abiotic stress tolerance. In addition, we highlight the current progress in the development of anthocyanin-enriched transgenic plants and their ability to increase abiotic stress tolerance. Overall, this review provides valuable information that increases our understanding of the mechanisms by which anthocyanins respond to abiotic stress and protect plants against it. This review also provides practical guidance for plant biologists who are engineering stress-tolerant crops using anthocyanin biosynthesis or regulatory genes. Naing, Aung Htay; Kim, Chang Kil Kyungpook Natl Univ, Dept Hort, Daegu, South Korea Naing, Aung Htay/AAF-4277-2019 37112768100; 7409880701 ckkim@knu.ac.kr; PHYSIOLOGIA PLANTARUM PHYSIOL PLANTARUM 0031-9317 1399-3054 172 3 SCIE PLANT SCIENCES 2021 5.081 13.6 7.7 2025-07-30 322 324 TRANSCRIPTION FACTOR GENE; LOW-TEMPERATURE STRESS; ORYZA-SATIVA L.; REACTIVE OXYGEN; SALT-TOLERANCE; DROUGHT STRESS; PHENYLPROPANOID PATHWAY; TRANSGENIC ARABIDOPSIS; OXIDATIVE STRESS; FLAVONOIDS ACCUMULATION Anthocyanins; Oxidative Stress; Plants, Genetically Modified; Reactive Oxygen Species; Stress, Physiological; anthocyanin; reactive oxygen metabolite; metabolism; oxidative stress; physiological stress; transgenic plant English 2021 2021-07 10.1111/ppl.13373 바로가기 바로가기 바로가기 바로가기
Article Block-CLAP: Blockchain-Assisted Certificateless Key Agreement Protocol for Internet of Vehicles in Smart Transportation In the Internet of Vehicles (IoV), numerous potential applications have come up with the use of the Internet of Things (IoT)-empowered smart devices. In IoV, vehicles, roads, street signs and traffic lights can accordingly adjust to changing conditions in order to assist drivers, and also to improve safety, ease congestion and pollution reduction. Since various entities in an IoV environment make communications over public channels, there are potential security threats. To deal with such serious threats, we design a new blockchain-assisted certificateless key agreement protocol for IoV in smart transportation context, called Block-CLAP. In Block-CLAP, through authentication key management, traffic-centric data reach to a cluster head (CH) and then to its nearby road-side unit (RSU) securely using the established secret keys. A cloud server (CS) then securely collects the information from its attached RSUs and create the transactions. Later, the transactions are formed into blocks by the CS in a Peer-to-Peer (P2P) cloud servers network, and the blocks are verified and added through voting-based consensus algorithm in the blockchain. The detailed security analysis through formal, informal and formal security verification, and comparative study show that Block-CLAP provides superior security and has low communication and computational overheads as compared with other existing competing authentication schemes in the IoV environment. Finally, the blockchain-based implementation of Block-CLAP has been performed to measure computational time needed for a varied number of transactions per block and also for a varied number of blocks mined in the blockchain. Chattaraj, Durbadal; Bera, Basudeb; Das, Ashok Kumar; Saha, Sourav; Lorenz, Pascal; Park, YoungHo Int Inst Informat Technol, Ctr Secur Theory & Algorithm Res, Hyderabad 500032, Andhra Pradesh, India; JIS Coll Engn, Dept Informat Technol, Nadia 741235, W Bengal, India; JIS Coll Engn, Dept Comp Sci & Engn, Nadia 741235, W Bengal, India; Int Inst Informat Technol, Ctr Secur Theory & Algorithm Res, Hyderabad 500032, India; Univ Haute Alsace, F-68008 Colmar, France; Kyungpook Natl Univ, Sch Elect Engn, Daegu 41566, South Korea Das, Ashok Kumar/U-2790-2019; Saha, Sourav/LSL-9012-2024; Bera, Basudeb/ACC-6233-2022; Chattaraj, Durbadal/Y-1724-2019; , LORENZ/ABH-9737-2020 36613016900; 57214777647; 55450732800; 57207760870; 7101942080; 56962990300 durbadal.chattaraj@jiscollege.ac.in;basudeb.bera@research.iiit.ac.in;ashok.das@iiit.ac.in;sourav.saha@research.iiit.ac.in;lorenz@ieee.org;parkyh@knu.ac.kr; IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY IEEE T VEH TECHNOL 0018-9545 1939-9359 70 8 SCIE ENGINEERING, ELECTRICAL & ELECTRONIC;TELECOMMUNICATIONS;TRANSPORTATION SCIENCE & TECHNOLOGY 2021 6.239 13.6 5.84 2025-07-30 66 77 Security; Protocols; Servers; Blockchain; Roads; Cloud computing; Authentication; Internet of Vehicles; blockchain; authentication; key agreement; security IOT-ENABLED INTERNET; SECURE AUTHENTICATION; SCHEME; EFFICIENT; NETWORK; COMMUNICATION; INTELLIGENT; MANAGEMENT; MECHANISM; PRIVACY authentication; blockchain; Internet of Vehicles; key agreement; security Authentication; Blockchain; Cloud computing; Internet of things; Peer to peer networks; Road vehicles; Security systems; Traffic congestion; Vehicle to vehicle communications; Authentication scheme; Comparative studies; Computational overheads; Computational time; Consensus algorithms; Internet of thing (IOT); Key agreement protocol; Pollution reduction; Traffic signs English 2021 2021-08 10.1109/tvt.2021.3091163 바로가기 바로가기 바로가기 바로가기
Article Cooperative Inference of DNNs Over Noisy Wireless Channels This work studies cooperative inference of deep neural networks (DNNs), in which the inference process is performed in a cooperative manner by an edge device and an edge server. In particular, a practical noisy wireless channel between the edge device and the edge server is considered in this work, unlike the previous works which only considered ideal and simplistic error-free communications between them. To prevent the prediction of DNNs from being inaccurate, the communication errors caused by the noisy wireless channel must be appropriately mitigated. Thus, in the proposed cooperative DNN inference, a hybrid automatic repeat request with chase combining (HARQ-CC) is adopted with a practical error correction code (ECC). Analyzing the end-to-end latency of the proposed cooperative DNN inference, we jointly determine the optimal code rate of the ECC and the optimal location at which the DNN must be split into two parts for the edge device and the edge server to minimize the end-to-end latency. The experimental results show that the proposed cooperative DNN inference considerably outperforms other comparable schemes in previous works. Yun, Sangseok; Kang, Jae-Mo; Choi, Sooyong; Kim, Il-Min Pukyong Natl Univ, Dept Informat & Commun Engn, Busan 48513, South Korea; Kyungpook Natl Univ, Dept Artificial Intelligence, Daegu 41566, South Korea; Yonsei Univ, Sch Elect & Elect Engn, Seoul 03722, South Korea; Queens Univ, Dept Elect & Comp Engn, Kingston, ON K7L 3N6, Canada 56115729600; 56024930400; 7408121387; 36040390300 ssyun@pknu.ac.kr;jmkang@knu.ac.kr;csyong@yonsei.ac.kr;ilmin.kim@queensu.ca; IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY IEEE T VEH TECHNOL 0018-9545 1939-9359 70 8 SCIE ENGINEERING, ELECTRICAL & ELECTRONIC;TELECOMMUNICATIONS;TRANSPORTATION SCIENCE & TECHNOLOGY 2021 6.239 13.6 0.54 2025-07-30 8 10 Servers; Wireless communication; Noise measurement; Error correction codes; Performance evaluation; Error probability; Neural networks; Artificial intelligence (AI); deep neural network (DNN); cooperative inference; edge computing; edge intelligence DEEP NEURAL-NETWORKS; INTELLIGENCE Artificial intelligence (AI); cooperative inference; deep neural network (DNN); edge computing; edge intelligence Deep neural networks; Optimal systems; Communication errors; End to end latencies; Error correction codes; Error free communications; Hybrid automatic repeat request; Inference process; Optimal locations; Wireless channel; Error correction English 2021 2021-08 10.1109/tvt.2021.3092179 바로가기 바로가기 바로가기 바로가기
Article Effects of Root Canal Curvature and Mechanical Properties of Nickel-Titanium Files on Torque Generation Introduction: This study aimed to compare the torque generated by 4 different files in root canals with 4 different curvature angles. Methods: Four brands of nickel-titanium (NiTi) endodontic files were selected: WaveOne Primary (Dentsply Sirona, Ballaigues, Switzerland), WaveOne Gold Primary (Dentsply Sirona), ProTaper Universal F2 (Dentsply Sirona), and ProTaper Next X2 (Dentsply Sirona). A tempered steel block containing artificial canals with 4 different canal curvatures (15 degrees, 25 degrees, 35 degrees, and 45 degrees) was constructed. Each file was used according to the manufacturer's instructions in the dynamic model, with an added 15 axial upand-down movements of 4 mm at the end of the canal. The generated torque was recorded, and the total and maximum torque values were measured. Two-way analysis of variance and the Duncan post hoc comparison test were performed at a significance level of 95%. Results: A significant correlation between the curvature angle and the type of file system was observed (P < .05). As the degree of canal curvature increased, the generated total and maximum torque increased. At 15 degrees and 25 degrees, the NiTi files with reciprocating motion generated a higher total and maximum torque than files with continuous rotation. ProTaper Universal of conventional NiTi alloy showed the steepest increase in the generated total and maximum torque with the increasing curvature angle. The ProTaper Next file had the lowest torque values at the higher canal angles of 35 degrees and 45 degrees (P < .05). Conclusions: Despite the study limitations, it can be concluded that root canal curvature, design, and heat treatment of NiTi files and file kinematics affect the generated torque during instrumentation. Kwak, Sang Won; Ha, Jung-Hong; Shen, Ya; Haapasalo, Markus; Kim, Hyeon-Cheol Pusan Natl Univ, Dent Res Inst, Dept Conservat Dent, Sch Dent,Dent & Life Sci Inst, Yangsan, South Korea; Kyungpook Natl Univ, Sch Dent, Dept Conservat Dent, Daegu, South Korea; Univ British Columbia, Fac Dent, Dept Oral Biol & Med Sci, Div Endodont, Vancouver, BC, Canada ; Kim, Hyeon/AAQ-9057-2021; Shen, Ya/IUN-0320-2023 54787794900; 55549831900; 7404767171; 7003569249; 35746710200 golddent@pusan.ac.kr; JOURNAL OF ENDODONTICS J ENDODONT 0099-2399 1878-3554 47 9 SCIE DENTISTRY, ORAL SURGERY & MEDICINE 2021 4.422 13.6 1.59 2025-07-30 9 13 Curvature angle; heat-treated file; nickel-titanium file; reciprocation; torque CYCLIC FATIGUE RESISTANCE; ENDODONTIC INSTRUMENTS; GLIDE PATH; ROTARY; PROTAPER; FRACTURE; DEFECTS Curvature angle; heat-treated file; nickel-titanium file; reciprocation; torque Alloys; Dental Alloys; Dental Pulp Cavity; Equipment Design; Nickel; Root Canal Preparation; Rotation; Titanium; Torque; alloy; dental alloy; nickel; titanium; dental pulp cavity; equipment design; root canal preparation; rotation; torque English 2021 2021-09 10.1016/j.joen.2021.06.019 바로가기 바로가기 바로가기 바로가기
Article High-Voltage-Gain Soft-Switching Converter Employing Bidirectional Switch for Fuel-Cell Vehicles Conventional current-fed resonant converter suffers from high turn-off loss over wide range of fuel-cell voltage. To alleviate this problem, we propose high voltage gain current-fed resonant converter that achieves almost ZVS turn-off over a wide range of voltage gain. By employing a bidirectional switch across center nodes of the voltage doubler and corresponding modulation, the presented converter achieved almost ZVS at the turn-off instant; this trait significantly increases the power conversion efficiency even under high frequency operation. The inherent boost function of the current doubler, an additional boosting operation using a bidirectional switch, and double boosting of the voltage doubler enable the presented converter to achieve high voltage gain without having to use a transformer that has a high turns-ratio. Moreover, 180 degrees phase interleaving reduces the input current ripple to zero. The steady-state operation is analyzed comprehensively, and design considerations of the proposed converter are given. Finally, a prototype with input of 48-72 V, output of 380 V, and rated power of 1 kW is developed to validate the effectiveness and feasibility of the proposed converter. Kim, Nam-Gyeong; Han, Byeongcheol; Jo, Seung-Won; Kim, Minsung Dongguk Univ, Div Elect & Elect Engn, Seoul 04620, South Korea; Kyungpook Natl Univ, Sch Elect Engn, Daegu 41566, South Korea; Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu 41566, South Korea; Dongguk Univ, Div Elect & Elect Engn, Seoul 04620, South Korea; Hanwha Solut, Syst Dev Ctr, Seoul 08506, South Korea ; Han, Byeongcheol/W-7608-2019 57220177838; 57188622752; 57217022071; 57201445330 namgygkim@dongguk.edu;hbychol@knu.ac.kr;vsw3127@naver.com;mkim@dgu.ac.kr; IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY IEEE T VEH TECHNOL 0018-9545 1939-9359 70 9 SCIE ENGINEERING, ELECTRICAL & ELECTRONIC;TELECOMMUNICATIONS;TRANSPORTATION SCIENCE & TECHNOLOGY 2021 6.239 13.6 1.79 2025-07-30 21 29 Switching loss; wide voltage range; current-fed; zero ripple; life time DC-DC CONVERTER current-fed; life time; Switching loss; wide voltage range; zero ripple Conversion efficiency; Fuel cells; Gain measurement; Power converters; Bidirectional switch; Conventional currents; Design considerations; High frequency operation; Input current ripple; Power conversion efficiencies; Softswitching converters; Steady-state operation; Zero voltage switching English 2021 2021-09 10.1109/tvt.2021.3100008 바로가기 바로가기 바로가기 바로가기
Article Knowledge Distillation-Aided End-to-End Learning for Linear Precoding in Multiuser MIMO Downlink Systems With Finite-Rate Feedback We propose a deep learning-based channel estimation, quantization, feedback, and precoding method for downlink multiuser multiple-input and multiple-output systems. In the proposed system, channel estimation and quantization for limited feedback are handled by a receiver deep neural network (DNN). Precoder selection is handled by a transmitter DNN. To emulate the traditional channel quantization, a binarization layer is adopted at each receiver DNN, and the binarization layer is also used to enable end-to-end learning. However, this can lead to inaccurate gradients, which can trap the receiver DNNs at a poor local minimum during training. To address this, we consider knowledge distillation, in which the existing DNNs are jointly trained with an auxiliary transmitter DNN. The use of an auxiliary DNN as a teacher network allows the receiver DNNs to additionally exploit lossless gradients, which is useful in avoiding a poor local minimum. For the same number of feedback bits, our DNN-based precoding scheme can achieve a higher downlink rate compared to conventional linear precoding with codebook-based limited feedback. Kong, Kyeongbo; Song, Woo-Jin; Min, Moonsik Pukyong Natl Univ, Coll Liberal Arts, Busan 48513, South Korea; Pohang Univ Sci & Technol, Dept Elect Engn, Pohang 37673, South Korea; Kyungpook Natl Univ, Sch Elect Engn, Daegu 41566, South Korea; Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu 41566, South Korea ; Kong, Kyeongbo/HKV-1044-2023 57198436525; 35264932800; 55386299100 kkb4723@postech.ac.kr;wjsong@postech.ac.kr;msmin@knu.ac.kr; IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY IEEE T VEH TECHNOL 0018-9545 1939-9359 70 10 SCIE ENGINEERING, ELECTRICAL & ELECTRONIC;TELECOMMUNICATIONS;TRANSPORTATION SCIENCE & TECHNOLOGY 2021 6.239 13.6 1.09 2025-07-30 15 15 Precoding; Receivers; Channel estimation; Auxiliary transmitters; Downlink; MIMO communication; Quantization (signal); Deep learning; multiple-input multiple-output; limited feedback; spatial multiplexing; linear precoding DESIGN Deep learning; limited feedback; linear precoding; multiple-input multiple-output; spatial multiplexing Channel estimation; Deep neural networks; Distillation; Distilleries; Learning systems; Transmitters; Channel quantization; Finite-rate feedback; Limited feedback; Linear pre-coding; Multi-user MIMO downlinks; Multiple input and multiple output systems; Precoder selections; Precoding scheme; Deep learning English 2021 2021-10 10.1109/tvt.2021.3110608 바로가기 바로가기 바로가기 바로가기
Article Large-Scale Beamforming for Massive MIMO via Randomized Sketching Massive MIMO system yields significant improvements in spectral and energy efficiency for future wireless communication systems. The regularized zero-forcing (RZF) beamforming is able to provide good performance with the capability of achieving numerical stability and robustness to the channel uncertainty. However, in massive MIMO systems, the matrix inversion operation in RZF beamforming becomes computationally expensive. To address this computational issue, we shall propose a novel randomized sketching based RZF beamforming approach with low computational complexity. This is achieved by solving a linear system via randomized sketching based on the preconditioned Richard iteration, which guarantees high quality approximations to the optimal solution. We theoretically prove that the sequence of approximations obtained iteratively converges to the exact RZF beamforming matrix linearly fast as the number of iterations increases. Also, it turns out that the system sum-rate for such sequence of approximations converges to the exact one at a linear convergence rate. Our simulation results verify our theoretical findings. Choi, Hayoung; Jiang, Tao; Shi, Yuanming; Liu, Xuan; Zhou, Yong; Letaief, Khaled B. Kyungpook Natl Univ, Dept Math, Daegu 41566, South Korea; ShanghaiTech Univ, Sch Informat Sci & Technol, Shanghai 201210, Peoples R China; Yoke Intelligence, Shanghai 201210, Peoples R China; Univ New South Wales, Sch Elect Engn & Telecommun, Sydney, NSW 2052, Australia; Hong Kong Univ Sci & Technol, Dept Elect & Comp Engn, Kowloon, Hong Kong 999077, Peoples R China ; Choi, Hayoung/U-7046-2019; Shi, Yuanming/LSK-2577-2024; Letaief, Khaled/LSJ-2311-2024; Jiang, Tao/ACK-3502-2022 56942685000; 57208173904; 55695283900; 59640004600; 35732808900; 55666697100 hchoi@shanghaitech.edu.cn;jiangtaol@shanghaitech.edu.cn;shiym@shanghaitech.edu.cn;xuan.liu@unsw.edu.au;zhouyong@shanghaitech.edu.cn;eekhaled@ust.hk; IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY IEEE T VEH TECHNOL 0018-9545 1939-9359 70 5 SCIE ENGINEERING, ELECTRICAL & ELECTRONIC;TELECOMMUNICATIONS;TRANSPORTATION SCIENCE & TECHNOLOGY 2021 6.239 13.6 0.23 2025-07-30 5 3 Linear systems; Uncertainty; Array signal processing; Simulation; Wireless networks; Massive MIMO; Linear algebra; Regularized zero-forcing beamforming; massive MIMO; randomized sketching algorithm; sketching method ALGORITHMS; SPARSE; COMMUNICATION; OPTIMIZATION massive MIMO; randomized sketching algorithm; Regularized zero-forcing beamforming; sketching method Energy efficiency; Linear systems; Matrix algebra; MIMO systems; Beamforming matrix; Channel uncertainties; Computational issues; Linear convergence rate; Low computational complexity; Number of iterations; Stability and robustness; Wireless communication system; Beamforming English 2021 2021-05 10.1109/tvt.2021.3071543 바로가기 바로가기 바로가기 바로가기
Article Low-Complexity MIMO Detection Based on Reinforcement Learning With One-Bit ADCs This paper proposes a low-complexity reinforcement learning detection (RLD) algorithm for multi-input multi-output systems with one-bit analog-to-digital converters. The proposed algorithm exploits pairs of quantized received signals and detected symbols as training examples to train the likelihood function (LF) of the system. A major challenge in optimizing the RLD algorithm is to determine the optimal policy that decides whether to exploit the training examples based on their reliabilities. Determining the optimal policy inherently involves huge complexities in reflecting all possible transitions among candidate symbols. Thus, we simplify the optimal policy by considering only the most probable candidates among all possible decisions to reduce this complexity. Another major challenge in applying the RLD algorithm is that it requires high computational complexity to produce soft information for detection. Thus, we define new branch and path metrics derived from the LF and then remove the candidate symbols whose path metrics are smaller than a pre-defined value to alleviate the complexity. Moreover, we analyze the complexity of the proposed algorithm by deriving the expected number of surviving candidates. Simulation results show that the proposed algorithm provides a better performance-complexity tradeoff than the conventional RLD algorithm. Kim, Tae-Kyoung; Jeon, Yo-Seb; Min, Moonsik Mokpo Natl Univ, Dept Elect Informat & Commun Engn, Muan 58554, Jeonnam, South Korea; Pohang Univ Sci & Technol POSTECH, Dept Elect Engn, Pohang 37673, Gyeongbuk, South Korea; Kyungpook Natl Univ, Sch Elect Engn, Daegu 41566, South Korea; Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu 41566, South Korea Jeon, Yo-Seb/U-8637-2019 57216708769; 58254434200; 55386299100 tk415kim@gmail.com;yoseb.jeon@postech.ac.kr;msmin@knu.ac.kr; IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY IEEE T VEH TECHNOL 0018-9545 1939-9359 70 9 SCIE ENGINEERING, ELECTRICAL & ELECTRONIC;TELECOMMUNICATIONS;TRANSPORTATION SCIENCE & TECHNOLOGY 2021 6.239 13.6 0.54 2025-07-30 4 7 Complexity theory; Training; Measurement; Probability density function; Low-frequency noise; Detectors; Superluminescent diodes; One-bit ADC; maximum likelihood detection; likelihood function; reinforcement learning WAVE MASSIVE MIMO; DISTRIBUTED RECEPTION; WIRELESS SYSTEMS; COMMUNICATION likelihood function; maximum likelihood detection; One-bit ADC; reinforcement learning Analog to digital conversion; Decoding; MIMO systems; Multiplexing equipment; Analog to digital converters; Likelihood functions; Multi input multi output systems; Optimal policies; Performance-complexity tradeoffs; Received signals; Soft information; Training example; Reinforcement learning English 2021 2021-09 10.1109/tvt.2021.3099228 바로가기 바로가기 바로가기 바로가기
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