Institution
Kyonggi University
Education•Suwon, South Korea•
About: Kyonggi University is a education organization based out in Suwon, South Korea. It is known for research contribution in the topics: Catalysis & Dielectric. The organization has 1946 authors who have published 4404 publications receiving 64791 citations.
Topics: Catalysis, Dielectric, Patch antenna, Microstrip antenna, Coating
Papers published on a yearly basis
Papers
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TL;DR: In this article, the authors evaluated the impact of ground granulated blast-furnace slag (GGBS) binder on the reduction of CO2 in secondary precast concrete products.
451 citations
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TL;DR: Combined vitamin D and calcium supplementation can reduce fracture risk, but the effects may be smaller among community-dwelling older adults than among institutionalized elderly persons, and Appropriate dose and dosing regimens require further study.
Abstract: Data Synthesis: 19 RCTs (3 for cancer and 16 for fracture outcomes) and 28 observational studies (for cancer outcomes) were analyzed. Limited data from RCTs suggested that high-dose (1000 IU/d) vitamin D supplementation can reduce the risk for total cancer, and data from observational studies suggested that higher blood 25-hydroxyvitamin D (25-[OH]D) concentrations might be associated with increased risk for cancer. Mixed-effects dose– response meta-analyses showed that each 10-nmol/L increase in blood 25-(OH)D concentration was associated with a 6% (95% CI, 3% to 9%) reduced risk for colorectal cancer but no statistically significant dose–response relationships for prostate and breast cancer. Random-effects model meta-analysis showed that combined vitamin D and calcium supplementation reduced fracture risk (pooled relative risk, 0.88 [CI, 0.78 to 0.99]) in older adults, but the effects differed according to study setting: institution (relative risk, 0.71 [CI, 0.57 to 0.89]) versus community-dwelling (relative risk, 0.89 [CI, 0.76 to 1.04]). One RCT showed adverse outcomes associated with supplementation, including increased risk for renal and urinary tract stones. Limitations: Most trial participants were older (aged 65 years) postmenopausal women. Observational studies were heterogeneous and were limited by potential confounders. Conclusion: Combined vitamin D and calcium supplementation can reduce fracture risk, but the effects may be smaller among community-dwelling older adults than among institutionalized elderly persons. Appropriate dose and dosing regimens, however, require further study. Evidence is not sufficiently robust to draw conclusions regarding the benefits or harms of vitamin D supplementation for the prevention of cancer.
386 citations
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TL;DR: In this article, the effectiveness of supplementary cementitious materials (SCMs) such as ground granulated blast-furnace slag (GGBS), fly ash (FA), and silica fume (SF) in reducing CO2 emissions from ordinary Portland cement (OPC) concrete was examined by assembling and analyzing a comprehensive database including 5294 laboratory concrete mixes and 3915 plant mixes.
376 citations
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TL;DR: In this paper, the dielectric properties of A2+B6+O4 (A2+: Ca, Pb, Ba; B6+: Mo, W) ceramics were investigated as a function of packing fraction and bond valence.
Abstract: Microwave dielectric properties of A2+B6+O4 (A2+: Ca, Pb, Ba; B6+: Mo, W) ceramics were investigated as a function of packing fraction and bond valence. For A2+B6+O4 specimens sintered at 800–1100 °C for 3 h, a single phase with a tetragonal scheelite structure was detected, and the theoretical density was higher than 93% throughout the composition. Although the ionic polarizability of Ba2+ ion was larger than that of Ca2+ ion, the dielectric constant (K) of BaB6+O4 showed a smaller value than that of CaB6+O4. These results could be attributed to changes of the packing fraction due to the effective ionic size. The Q·f value was largely dependent on the packing fraction, as well as the percentages of theoretical density. The temperature coefficients of the resonant frequencies (TCFs) of the specimens were affected by the bond valence of oxygen. The specimens of CaMoO4 sintered at 1000 °C for 3 h showed the K of 10.8, Q·f of 76,990 GHz and TCF of −22.8 ppm/°C, respectively.
362 citations
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TL;DR: In this article, a detailed, practical discussion of Industry 4.0 in Korea is presented, and the authors suggest policy implications to transition toward industry 4. 0 in Korea by considering IT security, reliability and stability needed for critical machine-to-machine communication, and a need to maintain the integrity of production processes.
361 citations
Authors
Showing all 1964 results
Name | H-index | Papers | Citations |
---|---|---|---|
Huu Hao Ngo | 75 | 624 | 24545 |
Jaejung Ko | 48 | 214 | 8615 |
Sang-Ho Lee | 39 | 354 | 4991 |
Hoon Kim | 37 | 605 | 6010 |
Soon-Gil Yoon | 36 | 393 | 4887 |
Dinh Duc Nguyen | 35 | 232 | 4313 |
Soon Woong Chang | 35 | 164 | 4004 |
Dukjoon Kim | 35 | 242 | 5133 |
Kun Chang Lee | 34 | 243 | 5077 |
Ashraf F. Ashour | 33 | 157 | 3745 |
Hyejin Lee | 31 | 154 | 2894 |
Kyung-Yong Chung | 31 | 237 | 3089 |
Eung Soo Kim | 31 | 191 | 3053 |
Choongwan Koo | 31 | 98 | 2650 |
Do-Hee Kim | 30 | 125 | 2559 |