Jeju National University is a South Korean national university, which is situated in Jeju City, the provincial capital of Jeju Province. The university was founded in 1952.Jeju National University is one of the universities among 10 flagship Korean national universities in South Korea along with Seoul National University, Busan National University, Kyungpook National University, Chonnam National University, Chungnam National University, Chonbuk National University, Gyeongsang National University, Chungbuk National University and Kangwon National University.In 2008, Cheju National University and Jeju National University of Education were merged into Jeju National University.In Jeju National University, there are more than 1,402 instructors. About 2,500 first-year students are admitted each year. In addition, a graduate enrollment of around 2,364 is carried.Jeju island is a member of "The Provincial New 7 Wonders of Nature". Wikipedia.
Kim M.C.,Jeju National University
Korean Journal of Chemical Engineering | Year: 2013
A theoretical analysis of buoyancy-driven instability under transient basic fields is conducted in an initially quiescent, fluid-saturated, horizontal porous layer. Darcy's law is used to explain characteristics of fluid motion, and the anisotropy of permeability is considered. Under the Boussinesq approximation, the energy stability equations are derived following the energy formulation. The stability equations are analyzed numerically under the relaxed energy stability concept. For the various anisotropic ratios, the critical times are predicted as a function of the Darcy-Rayleigh number, and the critical Darcy-Rayleigh number is also obtained. The present predictions are compared with existing theoretical ones. © 2013 Korean Institute of Chemical Engineers, Seoul, Korea.
Kim M.C.,Jeju National University
Physics of Fluids | Year: 2014
To simulate a CO2 sequestration process, some researchers employed a water/propylene glycol (PPG) system which shows a non-monotonic density profile. Motivated by this fact, the stability of the diffusion layer of two miscible fluids saturated in a porous medium is analyzed. For a non-monotonic density profile system, linear stability equations are derived in a global domain, and then transformed into a system of ordinary differential equations in an infinite domain. Initial growth rate analysis is conducted without the quasi-steady state approximation (QSSA) and shows that initially the system is unconditionally stable for the least stable disturbance. For the time evolving case, the ordinary differential equations are solved applying the eigen-analysis and numerical shooting scheme with and without the QSSA. To support these theoretical results, direct numerical simulations are conducted using the Fourier spectral method. The results of theoretical linear stability analyses and numerical simulations validate one another. The present linear and nonlinear analyses show that the water/PPG system is more unstable than the CO2/brine one, and the flow characteristics of these two systems are quite different from each other. © 2014 AIP Publishing LLC.
Kim S.H.,Jeju National University
Epilepsy & behavior : E&B | Year: 2012
The purpose of the study was to evaluate the clinical characteristics of paroxysmal nonepileptic events (PNEs) in pediatric patients. Reports of 1108 patients who underwent long-term video-EEG monitoring at Seoul National University Children's Hospital were reviewed retrospectively. One hundred forty-three (12.9%) patients were diagnosed as having PNEs. The most common type of PNE was staring. Staring, tonic posturing, sleep myoclonus, and sleep-related disorders were more common in patients younger than 6 years old. Psychogenic nonepileptic seizure was the most common PNE in patients older than 6 years. Patients who were younger than 6 years old showed shorter disease duration and more varied types of PNEs when compared to older patients (6 years old or older). Presence of epilepsy was not significantly related to clinical difference in PNEs. In patients with developmental delay, staring and tonic posture were significantly more frequent than patients without developmental delay. Thirty-two patients without concurrent epilepsy were misdiagnosed with epilepsy, and AEDs were discontinued after the correct diagnosis of PNEs. Whenever the diagnosis of paroxysmal abnormal behavior is uncertain, correct diagnosis should be made using long-term video-EEG monitoring, especially in younger pediatric patients and patients with developmental delay. Copyright © 2012 Elsevier Inc. All rights reserved.
Shin T.,Jeju National University
Acta Histochemica | Year: 2013
The β-galactoside-binding lectin, galectin-3, is expressed in a variety of mammalian cells and tissues. It is involved in cell adhesion, activation, proliferation, apoptosis and cell migration. It also plays an important role in inflammation as a pro-inflammatory mediator. The involvement of galectin-3 in various inflammation models, including those of autoimmune disease, skin disease, and cancer, has been investigated extensively. Moreover, galectin-3 has been suggested to be a therapeutic target for various diseases. The present review deals with the expression of galectin-3 in central nervous system (CNS) tissues during normal development and in various models of inflammation. The available information indicates that galectin-3 is essential for normal brain development and plays diverse roles in CNS inflammation, combining pro-inflammatory roles with re-modeling capacity in damaged CNS tissues. © 2012 Elsevier GmbH.
Park N.,Jeju National University
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2011
In the mobile RFID (Radio-Frequency Identification) environment, scanning RFID tags which are personalized can bring some privacy infringement issues. In spite of the case that private information is not stored in those tags, one can identify entities, analyze their preferences, and track them by collecting data related with the tags and aggregating it. Especially, it might be more serious at the point of that data collection may be done not only by enterprises and government, but also by individuals. In this paper, we describe privacy infringements for the mobile RFID service environment. The proposed framework provides a means for securing the stability of mobile RFID services by suggesting personal policy based access control for personalized tags. © 2011 Springer-Verlag Berlin Heidelberg.