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Search Results: 1 - 10 of 403643 matches for " Heon M. Lim "
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Division Technique Training Tool for Problem Solving Methods of IPR  [PDF]
Gil Su Yoon, You Heon Kim, Sung Ju Lim
Creative Education (CE) , 2012, DOI: 10.4236/ce.2012.38205
Abstract: We have developed a training tool of division technique among 5 techniques in ASIT for problem solving method for Intellectual Property Right. Even though with its good capability, there were not yet an applicable training tool to use for division training because of its easy disassembled shape with small disturbance. To develop a division technique training tool, we have applied ASIT to game T. We have chosen game shape parts with magnetic rubber and board as the plate coated with zinc. The adhesive strength of the game shape parts to board is enough to keep fixed position even in turn down. Developed division training tool is expected to be used for the e-learning of problem solving training for student education and lifelong education. It is under Korean utility model application. E-learning with open resources including beneficial training for solving problem will be developed together with the foundation of life-long education. This division training device is proposed to younger generation as the educational auxiliary training tool for problem solving method. We are looking for the international cooperation with this division training tool. With the encouragement of this division training tool we have patented Korean patent of the lifting method of methane hydrate which can be extended to various fields of IPR.
Division Technique Training Tool for Problem Solving Methods of IPR  [PDF]
Gil Su Yoon, You Heon Kim, Sung Ju Lim
Creative Education (CE) , 2012, DOI: 10.4236/ce.2012.38B027
Abstract: We have developed a training tool of division technique among 5 techniques in ASIT for problem solving method for Intellectual Property Right.  Even though with its good capability, there were no applicable training tool to use for division training because of its easy disassembled shape with small disturbance. To develop a division technique training tool, we have applied ASIT to game T. We have chosen game shape parts with magnetic rubber and board as the plate coated with zinc. The adhesive strength of the game shape parts to board is enough to keep fixed position even in turn down. Developed tool is expected to use for the e-learning of problem solving training for student education and lifelong education. It is under Korean utility model application. E-learning with open resources including beneficial training for solving problem will develop together in foundation of life-long education. This division training device is proposed to younger generation as the educational auxiliary training tool for problem solving method. We have applied for Korean patent of the lifting method of methan hydrate which can be extended to various fields of IPR.
In Vivo Transcription Dynamics of the Galactose Operon: A Study on the Promoter Transition from P1 to P2 at Onset of Stationary Phase
Sang Chun Ji,Xun Wang,Sang Hoon Yun,Heung Jin Jeon,Hee Jung Lee,Hackjin Kim,Heon M. Lim
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0017646
Abstract: Quantitative analyses of the 5′ end of gal transcripts indicate that transcription from the galactose operon P1 promoter is higher during cell division. When cells are no longer dividing, however, transcription is initiated more often from the P2 promoter. Escherichia coli cells divide six times before the onset of the stationary phase when grown in LB containing 0.5% galactose at 37°C. Transcription from the two promoters increases, although at different rates, during early exponential phase (until the third cell division, OD600 0.4), and then reaches a plateau. The steady-state transcription from P1 continues in late exponential phase (the next three cell divisions, OD600 3.0), after which transcription from this promoter decreases. However, steady-state transcription from P2 continues 1 h longer into the stationary phase, before decreasing. This longer steady-state P2 transcription constitutes the promoter transition from P1 to P2 at the onset of the stationary phase. The intracellular cAMP concentration dictates P1 transcription dynamics; therefore, promoter transition may result from a lack of cAMP-CRP complex binding to the gal operon. The decay rate of gal-specific transcripts is constant through the six consecutive cell divisions that comprise the exponential growth phase, increases at the onset of the stationary phase, and is too low to be measured during the stationary phase. These data suggest that a regulatory mechanism coordinates the synthesis and decay of gal mRNAs to maintain the observed gal transcription. Our analysis indicates that the increase in P1 transcription is the result of cAMP-CRP binding to increasing numbers of galactose operons in the cell population.
The CnuK9E H-NS Complex Antagonizes DNA Binding of DicA and Leads to Temperature-Dependent Filamentous Growth in E. coli
Sang Hoon Yun, Sang Chun Ji, Heung Jin Jeon, Xun Wang, Si Wouk Kim, Geunu Bak, Younghoon Lee, Heon M. Lim
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0045236
Abstract: Cnu (an OriC-binding nucleoid protein) associates with H-NS. A variant of Cnu was identified as a key factor for filamentous growth of a wild-type Escherichia coli strain at 37°C. This variant (CnuK9E) bears a substitution of a lysine to glutamic acid, causing a charge reversal in the first helix. The temperature-dependent filamentous growth of E. coli bearing CnuK9E could be reversed by either lowering the temperature to 25°C or lowering the CnuK9E concentration in the cell. Gene expression analysis suggested that downregulation of dicA by CnuK9E causes a burst of dicB transcription, which, in turn, elicits filamentous growth. In vivo assays indicated that DicA transcriptionally activates its own gene, by binding to its operator in a temperature-dependent manner. The antagonizing effect of CnuK9E with H-NS on DNA-binding activity of DicA was stronger at 37°C, presumably due to the lower operator binding of DicA at 37°C. These data suggest that the temperature-dependent negative effect of CnuK9E on DicA binding plays a major role in filamentous growth. The C-terminus of DicA shows significant amino acid sequence similarity to the DNA-binding domains of RovA and SlyA, regulators of pathogenic genes in Yersinia and Salmonella, respectively, which also show better DNA-binding activity at 25°C.
Structure of optimal martingale transport in general dimensions
Nassif Ghoussoub,Young-Heon Kim,Tongseok Lim
Mathematics , 2015,
Abstract: Given two probability measures $\mu$ and $\nu$ in convex order on $\R^d$, we study the profile of one-step martingale plans $\pi$ on $\R^d\times \R^d$ that optimize the expected value of the modulus of their increment among all martingales having $\mu$ and $\nu$ as marginals. While there is a great deal of results for the real line (i.e., when $d=1$) much less is known in the richer and more delicate higher dimensional case that we tackle in this paper. We show that many structural results can be obtained whenever a natural dual optimization problem is attained, provided the initial measure $\mu$ is absolutely continuous with respect to Lebesgue measure. %One such a property is that $\mu$-almost every $x$ in $\R^d$ is mapped by the optimal transport plan into a probability measure $\pi_x$ concentrated on the set $\Gamma_x$ of %extreme points of the closed convex hull of its support. In some cases, the sets $\Gamma_x$ consist of the vertices of a $k(x)$-dimensional polytope. We also give a remarkable decomposition of any given "martingale supporting" Borel subset of $\R^d\times \R^d$ into a collection of mutually disjoint components in such a way that whenever the martingale is optimal, then each of the components in the decomposition support an optimal solution for a properly restricted martingale transport problem for which duality is achieved. We use the decomposition to obtain structural results in certain cases where duality is not attained. On the other hand, we also run into optimal martingale transports that reflect the pathologies of Nikodym sets in dimension $d\geq 3$.
Adaptive Square-Shaped Trajectory-Based Service Location Protocol in Wireless Sensor Networks
Hwa-Jung Lim,Joa-Hyoung Lee,Heon-Guil Lee
Sensors , 2010, DOI: 10.3390/s100504497
Abstract: In this paper we propose an adaptive square-shaped trajectory (ASST)-based service location method to ensure load scalability in wireless sensor networks. This first establishes a square-shaped trajectory over the nodes that surround a target point computed by the hash function and any user can access it, using the hash. Both the width and the size of the trajectory are dynamically adjustable, depending on the number of queries made to the service information on the trajectory. The number of sensor nodes on the trajectory varies in proportion to the changing trajectory shape, allowing high loads to be distributed around the hot spot area.
Essential Oil Inhalation on Blood Pressure and Salivary Cortisol Levels in Prehypertensive and Hypertensive Subjects
In-Hee Kim,Chan Kim,Kayeon Seong,Myung-Haeng Hur,Heon Man Lim,Myeong Soo Lee
Evidence-Based Complementary and Alternative Medicine , 2012, DOI: 10.1155/2012/984203
Abstract: The purpose of this study was to identify the effects of essential oil inhalation on the 24-hour ambulatory blood pressure (BP) and salivary cortisol level in 83 prehypertensive and hypertensive subjects. The experimental group () was asked to inhale an essential oil blended with lavender, ylang-ylang, marjoram, and neroli (20 : 15 : 10 : 2), whereas the placebo group () was asked to inhale an artificial fragrance for 24 hours and the control group received no treatment (). The SBP () and DBP () measured at home in the experimental group were significantly decreased compared with the placebo group and the control group after treatment. The daytime SBP during the 24-hour ambulatory BP measurement of the experimental group presented with significant decreases in comparison with the measurements of the placebo group and the control group (). There was no statistically significant difference in the nighttime SBPs. The daytime DBPs during the 24-hour ambulatory BP measurements of the experimental group presented with significant decreases in comparison with the measurements of the placebo group and the control group (). There was no significant difference in the night time DBPs. The experimental group showed significant decreases in the concentration of salivary cortisol in comparison with the concentrations of the placebo group and the control group (). In conclusion, the inhalation of an essential oil had immediate and continuous effects on the home SBP, daytime BP, and the stress reduction. Essential oils may have relaxation effects for controlling hypertension.
Angular Magnetoresistance Oscillations in Organic Conductors
A. G. Lebed,Heon-Ick Ha,M. J. Naughton
Physics , 2004, DOI: 10.1103/PhysRevB.71.132504
Abstract: We demonstrate that electron wave functions change their dimensionality at some commensurate directions of a magnetic field in conductors with open [quasi-one-dimensional (Q1D)] sheets of Fermi surface. These 1D -> 2D dimensional crossovers lead to delocalization of wave functions and are responsible for angular magnetoresistance oscillations. As an example, we show that suggested theory is in qualitative and quantitative agreements with the recent experimental data obtained on (TMTSF)2ClO4 conductor.
Boltzmann-equation approach to anomalous transport in a Weyl metal
Ki-Seok Kim,Heon-Jung Kim,M. Sasaki
Physics , 2014, DOI: 10.1103/PhysRevB.89.195137
Abstract: Weyl metal is regarded as a platform toward interacting topological states of matter, where its topological structure gives rise to anomalous transport phenomena, referred to as chiral magnetic effect and "negative" magneto-resistivity, the origin of which is chiral anomaly. Recently, the negative magneto-resistivity has been observed with the signature of weak anti-localization at $x = 3 \sim 4 ~ \%$ in Bi$_{1-x}$Sb$_{x}$, where magnetic field is applied in parallel with electric field. Based on the Boltzmann-equation approach, we find the negative magneto-resistivity in the presence of weak anti-localization. An essential ingredient is to introduce the topological structure of chiral anomaly into the Boltzmann-equation approach, resorting to semi-classical equations of motion with Berry curvature.
A REVIEW OF SCHISTOSOMIASIS IN INDONESIA WITH REFERENCE TO SCHISTOSOMA JAPONICUM
Lim Boo Liat,M. Sudomo
Bulletin of Health Research , 2012,
Abstract: Tinjauan tentang Schistosoma di Indonesia ini mencakup Schistosoma japonicum, S. incognitum, S. spindale dan Trichohilharzia brevis. Tinjauan dibuat atas dasar laporan-laporan penelitian yang telah diterbitkan. Di dalamnya dapat dijumpai uraian singkat tentang S. spinale dan T. brevis. Dari banyak publikasi tentang S. japonicum dan S. incoganitum dapat disajikan uraian tentang peranan kedua parasit tersebut sebagai penyebab penyakit baik manusia maupun hewan.
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