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Developmental State in Crisis : Managing Its Decline and Corporate Restructuring in South Korea
Kim, Eun Mee,Suh, Sukyoung THE MANAGEMENT RESEARCH CENTRE YONSEI UNIVERSITY 2000 SANGNAM FORUM Vol.- No.-
The developmental state in South Korea, which was once a powerful engine of economic development, has been under great pressure to limit its functions and to reduce its size almost overnight the aftermath of the financial crisis of 1997. The international Monetary Fund and the current South Korea administration have suggested that the developmental state should no longer intervene so heavily in the economy, which was at least partly responsible for the financial crisis. The government restructuring, which has been promoted by the Kim Dae Jung administration, however, has not produced a "small, but efficient" government. It has resulted in some reshuffling of economy-related government offices, but has not brought any significant reduction in terms of the overall function or scope of the developmental state. Furthermore, the developmental state has also been in charge of corporate restructuring. This makes it difficult for the developmental state to reform itself, when it is at the same time supposed to manage the restructuring of other important sectors of society including the corporate and financial institutions. The Kim Dae Jung administration publicly announced that it would not intervene in the corporate restructuring process, as the previous administrations have done. However, the method in which it intervened in the restructuring process of two important industries-i.e., semiconductor and automobile-, can only be defined as "coercive." Thus, the paper concludes that the government reform and corporate restructuring are far from over, and that the developmental state is not in a crisis.
Stress analysis in a pedicle screw fixation system with flexible rods in the lumbar spine
Kim, Kyungsoo,Park, Won Man,Kim, Yoon Hyuk,Lee, SuKyoung SAGE Publications 2010 Proceedings of the Institution of Mechanical Engin Vol.224 No.3
<P>Breakage of screws has been one of the most common complications in spinal fixation systems. However, no studies have examined the breakage risk of pedicle screw fixation systems that use flexible rods, even though flexible rods are currently being used for dynamic stabilization. In this study, the risk of breakage of screws for the rods with various flexibilities in pedicle screw fixation systems is investigated by calculating the von Mises stress as a breakage risk factor using finite element analysis. Three-dimensional finite element models of the lumbar spine with posterior one-level spinal fixations at L4-L5 using four types of rod (a straight rod, a 4 mm spring rod, a 3 mm spring rod, and a 2 mm spring rod) were developed. The von Mises stresses in both the pedicle screws and the rods were analysed under flexion, extension, lateral bending, and torsion moments of 10 Nm with a follower load of 400 N. The maximum von Mises stress, which was concentrated on the neck region of the pedicle screw, decreased as the flexibility of the rod increased. However, the ratio of the maximum stress in the rod to the yield stress increased substantially when a highly flexible rod was used. Thus, the level of rod flexibility should be considered carefully when using flexible rods for dynamic stabilization because the intersegmental motion facilitated by the flexible rod results in rod breakage.</P>
A Study on Emotional Recovery Elasticity according to Non-invasive EEG Source Experience
( Sukyoung Kim ) 한국감성과학회 2017 한국감성과학회 국제학술대회(ICES) Vol.2017 No.-
In many studies, negative emotions such as depression / anxiety / irritation are negatively correlated with "learning achievement", ie, higher negative emotions can have a negative effect on academic achievement. In addition, the rapid spread of the Internet and smartphones and the exposure of irrelevant negative content, it causes many psycho-emotional problems in the educational setting and social environment and especially in the case of "anger control disorder" which is shown in various ages including youth recently, it may be caused by lack of adequate control ability on experiences of unexpected or unwanted stressors from outside. Negative Psychological - Methods such as medical approaches or psychological counseling to solve emotional problems require time and money, therefore, this study was aimed to investigate the relationship between preventive and ongoing solutions to these problems are difficult. We investigated that the experience of noninvasive EEG sources can reduce negative emotions that can occur when exposed to external stress and change them into positive emotions. Emotional ontology based emotion rule and emotional response test. Experimental results according to designed method when exposed to external stress, ie external negative stimuli. When experiencing EEG sources, it is desirable to reduce negative emotions and enhance positive emotions rather than to experience EEG sources can be. Therefore, the continuous experience of non-invasive EEG sources that emotional resilience is improved and it is proved to be an effective means to change negative emotions to positive emotions and to maintain positive emotions longer.
Robustness of Whole Spine Reconstruction using Anterior-Posterior and Lateral Planar X-ray Images
Kim, Kyungsoo,Jargalsuren, Sainjargal,Khuyagbaatar, Batbayar,Park, Won Man,Lee, SuKyoung,Kim, Yoon Hyuk Korean Society for Precision Engineering 2018 International Journal of Precision Engineering and Vol.19 No.2
The X-ray-based reconstruction methods using anterior-posterior (AP) and lateral (LAT) images assumes that the angle between the AP and LAT images is perpendicular. However, it is difficult to maintain the perfect perpendicular angle between the AP and LAT images when taking those two images sequentially in real situations. In this study, the robustness of a three-dimensional (3D) whole spine reconstruction method using AP and LAT planar X-ray images was analyzed by investigating cases in which the AP and LAT images were not taken perpendicularly. 3D models of the patient-specific spine from five subjects were reconstructed using AP and LAT X-Ray images and the 3D template models of C1 to L5 vertebrae based on B-spline free-form deformation (FFD) technology. The shape error, projected area error, and relative error in length were quantified by comparing the reconstructed model (FFD model) to the reference model (CT model). The results indicated that the reconstruction method might be considered robust in case that there is a small angular error, such as <TEX>$5^{\circ}$</TEX>, between the AP and LAT images. This study suggested that simple technical indications to obtain the perpendicular AP and LAT images in real situations can improve accuracy of 3D spine reconstruction.
SuKyoung Lee,Sriram, K.,Kyungsoo Kim,Yoon Hyuk Kim,Golmie, N. IEEE 2009 IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY Vol.58 No.2
<P>There are currently a large variety of wireless access networks, including the emerging vehicular ad hoc networks (VANETs). A large variety of applications utilizing these networks will demand features such as real-time, high-availability, and even instantaneous high-bandwidth in some cases. Therefore, it is imperative for network service providers to make the best possible use of the combined resources of available heterogeneous networks (wireless area networks (WLANs), Universal Mobile Telecommunications Systems, VANETs, Worldwide Interoperability for Microwave Access (WiMAX), etc.) for connection support. When connections need to migrate between heterogeneous networks for performance and high-availability reasons, seamless vertical handoff (VHO) is a necessary first step. In the near future, vehicular and other mobile applications will be expected to have seamless VHO between heterogeneous access networks. With regard to VHO performance, there is a critical need to develop algorithms for connection management and optimal resource allocation for seamless mobility. In this paper, we develop a VHO decision algorithm that enables a wireless access network to not only balance the overall load among all attachment points (e.g., base stations and access points) but also maximize the collective battery lifetime of mobile nodes (MNs). In addition, when ad hoc mode is applied to 3/4G wireless data networks, VANETs, and IEEE 802.11 WLANs for a more seamless integration of heterogeneous wireless networks, we devise a route-selection algorithm for forwarding data packets to the most appropriate attachment point to maximize collective battery lifetime and maintain load balancing. Results based on a detailed performance evaluation study are also presented here to demonstrate the efficacy of the proposed algorithms.</P>
A probabilistic call admission control algorithm for WLAN in heterogeneous wireless environment
SuKyoung Lee,Kyungsoo Kim,Kunho Hong,Griffith, D.,Yoon Hyuk Kim,Golmie, N. IEEE 2009 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS Vol.8 No.4
<P>In an integrated WLAN and cellular network, if all mobile users whose connections originate in the cellular network migrate to the WLAN whenever they enter the double coverage area, the WLAN will be severely congested and its users will suffer from performance degradation. Therefore, we propose a Call Admission Control (CAC) algorithm that allows the WLAN to limit downward Vertical Handovers (VHOs) from the cellular network to reduce unnecessary VHO processing. Numerical and simulation results demonstrate that our CAC scheme reduces the unnecessary VHO processing while keeping the DVHO blocking rate within acceptable limits and maintaining reasonable throughput in the WLAN.</P>
Composite nanofiber mats consisting of hydroxyapatite and titania for biomedical applications
Kim, Hong Mi,Chae, Won-Pyo,Chang, Ki-Whan,Chun, Sungsu,Kim, Sukyoung,Jeong, Yongsoo,Kang, Inn-Kyu Wiley Subscription Services, Inc., A Wiley Company 2010 JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B Vol.94 No.2
<P>Composite nanofiber mats (HA/TiO<SUB>2</SUB>) consisting of hydroxyapatite (HA) and titania (TiO<SUB>2</SUB>) were fabricated via an electrospinning technique and then collagen (type I) was immobilized on the surface of the HA/TiO<SUB>2</SUB> composite nanofiber mat to improve tissue compatibility. The structure and morphology of the collagen-immobilized composite nanofiber mat (HA/TiO<SUB>2</SUB>-col) was investigated using an X-ray diffractometer, electron spectroscopy for chemical analysis, and scanning electron microscope. The potential of the HA/TiO<SUB>2</SUB>-col composite nanofiber mat for use as a bone scaffold was assessed by an experiment with osteoblastic cells (MC3T3-E1) in terms of cell adhesion, proliferation, and differentiation. The results showed that the HA/TiO<SUB>2</SUB>-col composite nanofiber mats possess better cell adhesion and significantly higher proliferation and differentiation than untreated HA/TiO<SUB>2</SUB> composite nanofiber mats. This result suggests that the HA/TiO<SUB>2</SUB>-col composite nanofiber mat has a high-potential for use in the field of bone regeneration and tissue engineering. © 2010 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2010.</P>
Korean Participation in the Galaxy Evolution Explorer. II. Instruments
Sukyoung Yi,Young-Wook Lee,Yong-Ik Byun,Gyu-Suk Choi,Myung-Kook Jee,Jong-Myung Joo,Sug-Whan Kim,Yong-Cheol Kim,Hyun-chul Lee,Yoon Kyung Lee,Soo-Chang Rey,Myung-Hyun Rhee,Young-Jong Sohn,Jong-Hak Woo,S 한국천문학회 1999 天文學會報 Vol.24 No.1
Transition in micro/nano-scale mechanical properties of ZrO2/multi-wall carbon nanotube composites
KIM, Doo-In,VU, Duc-Thuan,ZHANG, Tengfei,LI, Minghan,SHEN, Lu,ZHOU, Xiaobing,JEONG, Myung Yung,HAN, Young-Hwan,KIM, Sukyoung,YUN, Jondo,HUANG, Qing,LEE, Dong-Yeon Ceramic Society of Japan 2014 JOURNAL OF THE CERAMIC SOCIETY OF JAPAN - Vol.122 No.1432