News Article | February 17, 2017
SEOUL, SOUTH KOREA--(Marketwired - Feb 17, 2017) - TV Chosun announced 40 leaders of various companies, governments, and non-profit organizations as the 'The Korea's Influential CEO in 2017'. Hosted by TV Chosun and sponsored by Chosunilbo, Ministry of Science, ICT, and Future Planning, and Ministry of Trade, Industry and Energy, the award ceremony for "The Korea's Influential CEO in 2017" was at Millennium Hilton Hotel in Seoul on January 25th with the award winners and their peers and family. The following is the list of the award winners: Won-Suk, Oh (Chairman / Korea Fuel Tech Corporation) Sung-Hee, Kang (Chairman / CLK Corporation) Un-Ha, Roh (CEO / Panasonic Korea, Ltd.) In-Gyu, Park (Chairman / DGB Financial Group Co., Ltd.) Hwa-Sun, Shin (CEO / Shinwha Real Estate Research & Development Institute) Se-Jong, Lee (Vice-president / Suncore, Inc.) Yoshimi, Takahashi (CEO / SBI Investment Korea Co., Ltd.) Joo-Hyun, Moon (Chairman / Mdmworld.co.kr & Marketing Co., Ltd.) Kuk-Hyun, Kim (Chairman / Inist bio Co., Ltd.) Hong-Goo, Lee (CEO / Tobesoft, Inc.) Yoon-Chai, Lee (Chairman / Pigeon Corporation) Dong-Won, Kwak (CEO / Busan Metropolitan Corporation) Gi-Woo, Lee (President / JEI University) Soon-Ja, Lee (President / Gyeongju University) Ji-Ha, Lee (CEO / Saemaul Globalization Foundation) Soon-Chul, Kim (Chairman / Korea Federation of Credit Guarantee Foundations) Yeo-Pyo, Yun (President / Chungbuk National University) Yeu-Keun, Choi (CEO / KEPCO Plant Service & Engineering) Bo-Saeng, Park (Mayor / Gimcheon City) Joo-Soo, Kim (Governor / Uiseong County) Byung-Soo, Suh (Mayor / Busan Metropolitan City) Chung-Sik, Kim (Governor / Changnyeong County) Dong-Soo, Han (Governor / CheongSong County) Sung-Woo, Kim (Governor / Goryeong County) Woo-Jeong, Park (Governor / Gochang County) Hyun-Bok, Jeong (Mayor / Gwangyang City) Yoon-Joo, Kim (Mayor / Gunpo City) Dong-Chell, Park (Governor / Geumsan County) Suk-Woo, Lee (Mayor / Namyangju City) Moon-Oh, Kim (Governor / Dalseong County) Hong-Jang, Kim (Mayor / Dangjin City) Chun-Hee, Park(Mayor / Songpagu Office) Kyu-Sun, Kim (Governor / Yeoncheon County) Saeng-Gi, Kim (Mayor / Jeongeup City) Chang-Hee, Lee (Mayor / Jinju City) Seung-Yool, Lee (Governor / Cheongdo County) Seok-Hwa, Lee (Governor / Cheongyang County) Sang-Ki, Han (Governor / Taean County) Seok-Hwan, Kim (Governor / HongSeong County) Moon-Soon, Choi (Governor / Hwacheon County)
Kim K.W.,Gyeongju University
Environmental Monitoring and Assessment | Year: 2015
Optical-based visibility measurement instruments have been widely used to quantify atmospheric light extinction for decades. The light extinction coefficient is converted to visual range using a well-known formula since visibility is defined as the longest distance at which a black object can be observed against the horizon. In this study, a camera-based visibility monitoring technique was introduced to directly estimate visual range using a visual image obtained from a camera system. It was denoted as image visual range. The visual, optical, and geographical visibility monitoring were conducted to investigate the relationship between image visual range and distance from camera installed at the monitoring site. The visibility estimation formula, which is the function of the y position of the coordinates in the visual image, was introduced. And image visual range was estimated from the visual image using the chromatic analysis. It was found that the relationship between the image visual range and the y position of the visual image was a nonlinear function. The average relative error of image visual range less than 50 km was acceptable from the results of the relationship between optical-based visual range and image visual range. It was estimated that the relative error between two variables was not only attributed to the perspective and the faint outline of the visual image in the chromatic analysis but also associated with the assumption of the uniform distribution of the light extinction by aerosol within the field of view in the optical monitoring. © 2015, Springer International Publishing Switzerland.
Won Kim K.,Gyeongju University
Aerosol and Air Quality Research | Year: 2015
Long-term visibility observations, including that of aerosol chemistry, is necessary to improve the visibility of the mega-city of Seoul. In this study, the contributions of size-resolved aerosols to light extinction were estimated during an extensive visibility monitoring period, from 2007 to 2009. Optical measurements of a light extinction coefficient, a light scattering coefficient, and a light absorption coefficient were made using a transmissometer, nephelometer, and aethalometer. Size-resolved aerosol measurements, including the collection of submicron (Dp< 1.0 µm), fine (Dp< 2.5 µm), and coarse (2.5 < Dp< 10 µm) particles were conducted for the determination of their mass extinction coefficients and contributions of chemical components to light extinction. A total of 386 measurement data sets were used to construct the predictive mass extinction coefficients for the size-resolved particles using regression analysis. The mass extinction coefficients of the sized-resolved aerosols of PM1.0, PM2.5, and PM10were found to be 8.7 ± 0.8, 4.7 ± 0.2, and 2.7 ± 0.2 m2/g, respectively. The aerosol light extinction varied with aerosol size distribution, the chemical composition of the aerosol, and ambient relative humidity. It was found that the ammonium sulfates were the largest contributor to light extinction and visibility impairment due to aged aerosols in the urban atmosphere of Seoul. © Taiwan Association for Aerosol Research.
Kim K.W.,Gyeongju University
Korean Journal of Chemical Engineering | Year: 2013
Size-resolved aerosol monitoring for PM10, PM2.5, and PM1.0 was performed to qualify and quantify the elements and ions by using proton induced X-ray emission (PIXE), inductively coupled plasma optical emission spectrometry (ICP-OES), and ion chromatography (IC) analysis. Time-resolved aerosol samplings based on 2-hour and 14-hour intervals were carried out during daytime and nighttime, respectively. Physical and chemical properties of size-resolved aerosols were investigated to characterize air quality in the national park area of Gyeongju, Korea. The PIXE and ICPOES methods made elemental mass of Al, Si, S, K, Ca, Ti, Cr, Fe, Sr, and Pb. And ions of Na+, NH4 +, Ca2+, Cl-, NO 3 -, and SO 4 2- were analyzed by the IC method. The mass concentrations of Si, S, Ti, and Pb determined by PIXE showed relatively good correlation with those determined by ICP-OES. But Fe and Sr had worse correlations with an average R2 of 0.4703 and 0.4825, respectively. The PIXE method was a good alternative to measure chemical species of Al, Si, S, K, Ca, Ti, Cr, and Pb for size-resolved aerosols except Fe and Sr in this study. The average relative errors of sizeresolved elements for 2-hour and 14-hour interval collections were 10.1±5.7% (0.1-28.3%) and 9.9±7.7% (1.3-38.4%). Ammonium sulfates (AS), mineral dust (MD), and sea salt (SS) aerosols were reconstructed from the elements determined by PIXE and ICP-OES and ions obtained by IC. The mass concentration of MD was calculated with crustal elements of Al, Si, Ca, Ti, and Fe, which are associated with soil erosion. The average relative error of MD was the lowest value of 0.8% in the PM10 regime and the highest value of 10.0% in the PM1.0 regime. The average relative errors of AS for PM10, PM2.5, and PM1.0 determined by PIXE, ICP-OES, and IC showed relatively lower values of 0.8-5.7%, 1.7-5.9%, and 3.3-8.3%, respectively. The average mass concentrations of AS, MD, and SS of PM10, PM2.5, and PM1.0 except submicron SS determined by PIXE were comparable to those determined by ICP-OES and IC within the acceptable relative errors. © 2013 Korean Institute of Chemical Engineers, Seoul, Korea.
Kim K.W.,Gyeongju University
Journal of the Korean Physical Society | Year: 2011
Visibility change can be perceived on a few-hour interval in real-time. In general, the light attenuation coefficients of an aerosol can be obtained by continuous measurements in the open path, thus provide real-time behavior for the aerosol optical properties. In order to characterize the chemical composition of particulate matters and their optical properties in the atmosphere, a complementary time and size-resolved collection for particulate matters is required. In this study, the mass concentrations of the elements reconstructing fine soil mass were analyzed using a proton induced X-ray emission (PIXE) method. Size-resolved particles of PM1.0, PM2.5, and PM10 were collected using cyclones with denuder systems during the summer and the fall intensive monitoring periods. A transmissometer, a nephelometer, and an aethalometer produced the light extinction, the scattering, and the absorption coefficients, respectively. Light extinction budgets for visibility impairing aerosol components were calculated using the well-known hygroscopic growth factors for ammonium sulfates, ammonium nitrates, and organics in the small and large particles size modes. During the intensive monitoring periods, the visual range was seriously reduced to less than 5 km due to high mass loading of PMs and increase of relatively humidity. NHSO was the largest contributor to light extinction. The light extinction coefficients are well correlated to PM10, PM2.5, and PM1.0, leading to mass extinction efficiencies of 4.6, 7.2, and 12.6 m2 g-1, respectively, in wet condition. Contributions of NHSO, NHNO, and OMC to light extinction increased in the large particle size mode than in the small particle size mode during the diurnal variation of the seriously hazy days. These results were obtained from the time-resolved mass concentrations of elements converting to light attenuating chemical species. An assessment of the variations of optical properties in real-time is possible because the PIXE method provides time-resolved measurement data.
Joo J.,Gyeongju University
Journal of Theoretical and Applied Electronic Commerce Research | Year: 2015
The buyer’s trust in seller in consumer to consumer e-commerce plays a critical role in consumer purchase decisions. Thus, this paper aims at analyzing the relationships between buyer’s trust in seller, price discount, and price premium by using product price as a moderator variable. A trust function for sellers was calculated through a questionnaire, by using the feedback mechanism and by applying Analytical Hierarchy Process. Our empirical study, using historical transaction data, indicates that buyer’s trust in seller in the case of an expensive product is more important than that in an inexpensive product. Buyers’behavior when purchasing a higher-priced product was more sensitive to the buyer’s trust in seller than to product price. Product price played the role of a moderator variable in the relationship between buyer’s trust in seller and price discount. However, there was no evidence that product price performs the function of a moderator variable in the relationship between buyer’s trust in seller and price premium. © 2015 Universidad de Talca - Chile.
Pourdana N.,Islamic Azad University at Karaj |
Pourdana N.,Gyeongju University
International Journal of Applied Linguistics and English Literature | Year: 2014
This study is an endeavor to demonstrate the presence of various kinds of cohesive devices through English Textbook and their possible impacts on Iranian High school students’ reading comprehension. . To homogenize the subjects and divide them into two intact groups of experimental and control, Nelson Battery Test of English was administered as the pre-test. In the 12-session treatment, the experimental group read through eight selected short passages from Learning to Read English (Birjandi, AnaniSarab & Samimi 2000) for 20 minutes per session, while the control group practiced the questions in English final exams back to previous academic years as a placebo. Both groups partook in a piloted and validated post-test. Four passages, extracted from the University Entrance Examinations in 2006, 2007, 2009 and 2011 in Iran, were read and followed by 20 multiple-choice items. The post-test was piloted and revised for an acceptable reliability estimate (Cronbach α=.761). The collected data were analyzed for normality with Kolmogorov-Smirnov Test. Statistics from pre- and post-tests supported the benefits Iranian high school EFL learners would gain from a high frequency of cohesive devices in their reading texts. Moreover, the EFL learners' moderately improved proficiency level accounted for the benefits they would gain from English texts flourished with frequent cohesive devices. Findings could have some important pedagogical implications in favor of explicit teaching of cohesive devices by EFL teachers and material developers. © Australian International Academic Centre, Australia.
Gyeongju University | Date: 2013-01-16
The present invention relates to an improved wave activated power generator. The power generator includes a pile 20, a chain 30 secured at opposite ends thereof to the pile 20 and a floating body 50, respectively, a suction pipe 70 communicating at one end thereof with an interior of the pile 20 and secured at the other end thereof to the floating body 50 to be exposed from a sea surface, and an air supply pipe 90 connected at one end thereof to an upper end of the tube to communicate with a tube 60 and secured at the other end thereof to the floating body 50 to be exposed from the sea surface. The chain 30 is sealed and surrounded with the tube 60 filled with air. The suction pipe 70 is disposed to pass through the tube 60. Accordingly, since the weight of the chain is reduced, vertical shifting of the floating body caused by waves is not disturbed, thereby increasing the total vertical shifting of the floating body. Further, the anchor may be easily installed to and disassembled from the sea bed, thereby facilitating movement of the resonance-type wave power generator.
Gyeongju University | Date: 2014-12-11
The present invention relates to a measurement system for calculating visual range using perspective and geometrical information of an image captured by a camera, CCTV, camcorder, or other imaging device and a method for measuring visual range from a non-linear function through pattern recognition on an image. The present measurement system and method may make up for uncertainty due to assumption that aerosol is evenly distributed and limit to measurement space in the optimal measurement method, thus offering more objective data.
Gyeongju University | Date: 2011-10-24
The present invention relates to an improved wave activated power generator. The power generator includes a pile, a chain secured at opposite ends thereof to the pile and a floating body, respectively, a suction pipe communicating at one end thereof with an interior of the pile and secured at the other end thereof to the floating body to be exposed from a sea surface, and an air supply pipe connected at one end thereof to an upper end of the tube to communicate with a tube and secured at the other end thereof to the floating body to be exposed from the sea surface. The chain is sealed and surrounded with the tube filled with air. The suction pipe is disposed to pass through the tube.