Kyungsung University is a private university in Busan, South Korea. It is located in the district of Nam-gu, southwest of the famous Haeundae beach. The campus is located near Kyungsung University-Pukyong National University Station on Line 2.The university was established by the late Reverend Dr. Kim Gil-Chang, a pioneer of Christianity in Korea. The university was originally called Kyungnam Teacher's College and established in 1955 under the ideals of Christian love and service, In 1979 the school was re-organized and renamed Pusan Industrial University. At the time of the founding of Pusan Industrial University, the General Construction Committee began work on expanding and improving the quality of the university's facilities. As a result, the university received official sanctioning as a general university in September,1983. The name of the university was changed to Kyungsung University in 1988 during the process of becoming an international university which can fulfill the needs of today's society.The university has 10 undergraduate colleges encompassing 7 different faculties and 54 departments at the time of 2011.There are seven graduate schools . In addition, seven affiliated organizations and seven affiliated research institutes have been established to aid teaching and research.. Kyungsung University's 700 employees and over 13,000 students are all working together to achieve the school's educational goals. Since 2002, the university has held a regional conference between South Korea and China regarding sustainable development of the Northeast Asia region.The Kyungsung University Museum has been involved in the excavation of important regional archaeological sites. In the 1990s, the university museum was responsible for excavating the Daeseong-dong site, a protohistoric cemetery Gimhae with high-status burials from the Proto–Three Kingdoms Period. Wikipedia.
Chi S.-M.,Kyungsung University
Bioinformatics | Year: 2012
We present an accurate and fast web server, WegoLoc for predicting subcellular localization of proteins based on sequence similarity and weighted Gene Ontology (GO) information. A term weighting method in the text categorization process is applied to GO terms for a support vector machine classifier. As a result, WegoLoc surpasses the state-of-the-art methods for previously used test datasets. WegoLoc supports three eukaryotic kingdoms (animals, fungi and plants) and provides human-specific analysis, and covers several sets of cellular locations. In addition, WegoLoc provides (i) multiple possible localizations of input protein(s) as well as their corresponding probability scores, (ii) weights of GO terms representing the contribution of each GO term in the prediction, and (iii) a BLAST E-value for the best hit with GO terms. If the similarity score does not meet a given threshold, an amino acid composition-based prediction is applied as a backup method. © The Author 2012. Published by Oxford University Press. All rights reserved.
News Article | February 15, 2017
SEOUL, SOUTH KOREA, February 14, 2017-- Soon-Woo Kim has been included in Marquis Who's Who. As in all Marquis Who's Who biographical volumes, individuals profiled are selected on the basis of current reference value. Factors such as position, noteworthy accomplishments, visibility, and prominence in a field are all taken into account during the selection process.Backed by a reputation for excellence, Dr. Kim is thriving at Coss Co. Ltd., where he serves as general division and executive director. Earlier in his career, he garnered experience as the director for the ACE Foreign Language Institute, the managing director and CEO of Hong-il Trading Co., and the managing director of Bukook Textile Co. Subsequently, he worked for Andong General Trading as branch manager for China, and president of Pusidol Electric Co. before earning an MBA from Pukyong National University in 2008.Dr. Kim proceeded to use his knowledge in the roles of CEO of Korea Relations Marketing Co. and Korea Asset Management Service Co., managing director of the Korea Small Business Management Association, and senior director of Changpoong Co. During his time with the Korea Relations Marketing Co., he earned a Ph.D. with a concentration in international management and marketing from his alma mater. In addition to his many management roles in the field, Dr. Kim also shared his experiences at multiple institutions, including as Kyungsung University, where he focused on logistics management, Dongguk University, where he taught international shipping theory, and the Korea Maritime and Ocean University, where he taught business management.Throughout his career, Dr. Kim has contributed his expertise to numerous articles in professional journals. In 2011, he authored "A Study on Chinese Guanxi Research from the Perspective of International Business Theory" with Su Lee Chun for the Korea Trade Research Association. Along with Su Lee Chan and another scholar, Young-Sik Seo, he penned "An Empirical Study on Preferences of Automobile Choice Attributes between Chinese and Korean Consumers in 2015 for The e-Business Studies. As a result of his efforts, he won the Best Paper Award for Future Scholars from the Korea International Trade Association. Looking ahead, Dr. Kim intends to continue parlaying his knowledge of the field to others.About Marquis Who's Who :Since 1899, when A. N. Marquis printed the First Edition of Who's Who in America , Marquis Who's Who has chronicled the lives of the most accomplished individuals and innovators from every significant field of endeavor, including politics, business, medicine, law, education, art, religion and entertainment. Today, Who's Who in America remains an essential biographical source for thousands of researchers, journalists, librarians and executive search firms around the world. Marquis now publishes many Who's Who titles, including Who's Who in America , Who's Who in the World , Who's Who in American Law , Who's Who in Medicine and Healthcare , Who's Who in Science and Engineering , and Who's Who in Asia . Marquis publications may be visited at the official Marquis Who's Who website at www.marquiswhoswho.com
Lee D.-H.,Kyungsung University |
Pham T.H.,Kyungsung University |
Ahn J.-W.,Kyungsung University
IEEE Transactions on Industrial Electronics | Year: 2013
This paper presents the design and operation of a two-phase four-two pole switched reluctance motor (SRM) for a high-speed air blower. The air blower has unidirectional rotation and requires a wide positive torque region without torque dead zone. In order to achieve the requirements, a nonuniform air gap with asymmetric inductance profile is considered. For a flattop torque with a low torque ripple, the nonuniform air gap is also effective. Based on the output torque analysis at the rotor position for the given air gap, the air gap is modified to reduce the torque ripple. The optimized air gap at a given position cannot feel the effect of the air gap at a previous rotor position. Therefore, the output torque cannot fully satisfy the target torque in one optimization process. In order to satisfy the target torque and reduce the torque ripple, the second optimization process is implemented considering the output torque of the initial optimization process. The second target torque is determined by the torque error of the initial output torque and target torque of the first process. From this optimization sequence, the final air gap, as a function of the rotor position, can be determined to satisfy the torque ripple requirement. The proposed high-speed four-two pole SRM is tested to verify the high-efficiency and low-acoustic-noise characteristics. © 1982-2012 IEEE.
Kim M.-S.,Pusan National University |
Baek I.-H.,Kyungsung University
International journal of nanomedicine | Year: 2014
The aim of this study was to fabricate valsartan composite nanoparticles by using the supercritical antisolvent (SAS) process, and to evaluate the correlation between in vitro dissolution and in vivo pharmacokinetic parameters for the poorly water-soluble drug valsartan. Spherical composite nanoparticles with a mean size smaller than 400 nm, which contained valsartan, were successfully fabricated by using the SAS process. X-ray diffraction and thermal analyses indicated that valsartan was present in an amorphous form within the composite nanoparticles. The in vitro dissolution and oral bioavailability of valsartan were dramatically enhanced by the composite nanoparticles. Valsartan-hydroxypropyl methylcellulose-poloxamer 407 nanoparticles exhibited faster drug release (up to 90% within 10 minutes under all dissolution conditions) and higher oral bioavailability than the raw material, with an approximately 7.2-fold higher maximum plasma concentration. In addition, there was a positive linear correlation between the pharmacokinetic parameters and the in vitro dissolution efficiency. Therefore, the preparation of composite nanoparticles with valsartan-hydroxypropyl methylcellulose and poloxamer 407 by using the SAS process could be an effective formulation strategy for the development of a new dosage form of valsartan with high oral bioavailability.
Kim S.-M.,Kyungsung University
Journal of the Optical Society of Korea | Year: 2012
In an earlier work, we proposed the chromatic dispersion monitoring technique of non-return to zero (NRZ) signal based on clock-frequency component (CFC) through numerical simulations. However, we have not yet shown any experimental demonstration or analytic derivation of it. In this paper, we show an experimental demonstration and analytic derivation of the proposed chromatic dispersion monitoring technique. We confirm that the experimental results and the analytic results correspond with the simulation results. We also demonstrate that monitoring range and accuracy can be improved by using a simple clock-extraction method.
Kyungsung University | Date: 2011-12-08
Disclosed is a method for suppressing a speed ripple occurring during an operation of an AC motor by using a torque compensator based on an activation function. The method includes the steps of calculating a speed error _(err )based on a reference speed _(ref )and an actual speed _(act); calculating a controller output T_(rm )by using the speed error _(err )as an input of a PI control and an operation of a compensated torque T_(com); and determining a torque variation based on the controller output T_(rm )and a reference torque T_(ref )and operating the torque variation in relation to an anti-windup gain K_(a )to use torque variation as an input of an integral (I) control. The method suppresses the speed ripple by compensating for the torque ripple through a controller which calculates the compensated torque by taking the signs of the speed error and the differential speed error into consideration.
Kyungsung University | Date: 2010-09-16
Disclosed is an active boost power converter for driving a single-phase SRM, capable of rapidly establishing excitation current in the excitation mode and reducing tail current and negative torque in the demagnetization mode under the high-speed operation of the SRM. The active boost power converter includes a boost module and a converter module connected to the boost module. The boost module includes first and second capacitors, first and second diodes and a switch device turned on/off to connect the first and second capacitors to each other in series or parallel. The switch device includes an insulated gate bipolar transistor (IGBT). The power converter is operated with first and second input modes and first and second output modes. Voltage of the first capacitor is equal to dc-link voltage and first and second capacitors are controlled to be operated in series or parallel by simply controlling the IGBT.
Chi S.-M.,Kyungsung University
Biochemical and Biophysical Research Communications | Year: 2010
We develop a new weighting approach of gene ontology (GO) terms for predicting protein subcellular localization. The weights of individual GO terms, corresponding to their contribution to the prediction algorithm, are determined by the term-weighting methods used in text categorization. We evaluate several term-weighting methods, which are based on inverse document frequency, information gain, gain ratio, odds ratio, and chi-square and its variants. Additionally, we propose a new term-weighting method based on the logarithmic transformation of chi-square. The proposed term-weighting method performs better than other term-weighting methods, and also outperforms state-of-the-art subcellular prediction methods. Our proposed method achieves 98.1%, 99.3%, 98.1%, 98.1%, and 95.9% overall accuracies for the animal BaCelLo independent dataset (IDS), fungal BaCelLo IDS, animal Höglund IDS, fungal Höglund IDS, and PLOC dataset, respectively. Furthermore, the close correlation between high-weighted GO terms and subcellular localizations suggests that our proposed method appropriately weights GO terms according to their relevance to the localizations. © 2010 Elsevier Inc.
Kyungsung University | Date: 2010-04-16
Disclosed is a passive converter for a drive device of a switched reluctance motor (SRM), in which high demagnetization voltage for the SRM is provided. The converter includes a rectifier which smoothes input voltage to supply DC voltage, a boost circuit connected with the rectifier, and an asymmetric converter connected with the boost circuit, and the boost circuit includes first to third diodes and first and second capacitors. The high demagnetization voltage is generated at current duration of a single phase or poly-phase SRM by using the passive converter for the drive device of the SRM, so that the driving
Auto Power Co. and Kyungsung University | Date: 2011-11-14
Disclosed is a dead-time compensation method of a 3-phase inverter using an SVPWM scheme. The dead-time compensation method includes generating a switching signal having dead-time with respect to the power semiconductor switches of the upper and lower arms in order to obtain a predetermined output through the SVPWM scheme, detecting medium phase current from each phase current output through the switching signal, determining polarity of the medium phase current, and generating a switching signal by calculating switching time in order to compensate for time to apply effective voltage according to the polarity of the medium phase current. Through the dead-time compensation method, the distortion of the output voltage and the reduction of voltage having a fundamental wave in the output voltage, which are caused by the dead-time, are minimized through the switching of compensating for the time to apply effective voltage based on the polarity of the load current.