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Gwangju, South Korea

GIST , formerly known as the Kwangju Institute of Science and Technology , is a leading research-oriented institute of Korea located in Gwangju, South Korea. Students in GIST can attend classes in the institute and participate in research. Wikipedia.

Oh K.-K.,Korea Electronics Technology Institute | Ahn H.-S.,Gwangju Institute of Science and Technology
IEEE Transactions on Automatic Control | Year: 2014

We propose a formation control strategy based on inter-agent displacements for single-integrator modeled agents in the plane. Since the orientations of the local reference frames of the agents are not aligned with each other due to the absence of a common sense of orientation, the proposed strategy consists of an orientation alignment law and a formation control law. Under the proposed strategy, if the interaction graph is uniformly connected and all the initial orientation angles belong to an interval with length less than $\pi $, the orientations are exponentially aligned and the formation exponentially converges to the desired formation. We also show that the proposed strategy can be utilized for network localization as a dual problem. © 1963-2012 IEEE. Source

Lee Y.,Gwangju Institute of Science and Technology | Geckeler K.E.,Korea Institute of Materials Science
Advanced Materials | Year: 2010

With the increasing interest in the biological applications of carbon nanotubes, their interactions in the biological interphase and their general cytotoxicity have become major issues. In spite of their salient properties, major hurdles still exist for their use in biological applications, due to their main characteristics, including their hydrophobic surfaces and tendency to aggregate, as well as their unknown interactions in the cellular interphase. In this Research News, these characteristics of carbon nanotubes, a model nanomaterial, are investigated. Thus, the cytotoxicity of carbon nanotubes, the infl uence of functionalization, as well as their interactions with different mammalian cell lines are studied. Moreover, suggestions for the improvement of their biocompatibility and the design of biocompatible carbon nanotube-based systems are provided. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source

Evans N.,University of Southampton | Kim K.-Y.,Gwangju Institute of Science and Technology
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Year: 2014

We study the D3/probe D5 system with two domain wall hypermultiplets. The conformal symmetry can be broken by a magnetic field, B (or running coupling), which promotes condensation of the fermions on each individual domain wall. Separation of the domain walls promotes condensation of the fermions between one wall and the other. We study the competition between these two effects showing a first order phase transition when the separation is ~ 0.56λ1/4B -1/2. We identify extremal brane configurations which exhibit both condensations simultaneously but they are not the preferred ground state. © 2013 The Authors. Published by Elsevier B.V. Source

Cho C.,Gwangju Institute of Science and Technology
Nature Reviews Urology | Year: 2012

The disintegrin and metalloprotease domain-containing protein (ADAM) family of multidomain membrane proteins comprises at least 34 members in mammals. More than half of these proteins are expressed specifically or predominantly in mammalian testes and epididymis, implying their prominence in male reproduction. These reproductive ADAMs can be classified into three phylogenetic groups; designated I, II, and III. Each group displays remarkably contrasting features. Group I contains 11 ADAMs expressed in the testis. The genes that encode these proteins lack introns in their coding sequences and most of the proteins are processed into prodomain-lacking forms in mature sperm. Five ADAMs - encoded by genes with multiple exons and introns - belong to phylogenetic group II. These ADAMs are also expressed in testicular germ cells, but both prodomains and metalloprotease domains are lacking in mature sperm. Two phylogenetic group III ADAMs are synthesized in the epididymis; one of which is secreted and transferred to the sperm surface. Some of these sperm ADAMs are assembled into potentially functional complexes, including ADAM1B-ADAM2, ADAM2-ADAM3-ADAM4, ADAM2-ADAM3-ADAM5, and ADAM2-ADAM3-ADAM6. It has been suggested that ADAM2 and ADAM3 have roles in sperm-egg interactions. Mouse knockout studies have revealed that the ADAM2-ADAM3 complex is critical for in vivo sperm migratory function in the female reproductive tract. © 2012 Macmillan Publishers Limited. All rights reserved. Source

Kim J.,Gwangju Institute of Science and Technology
Nucleic acids research | Year: 2013

Biological events such as gene expression, regulation, phosphorylation, localization and protein catabolism play important roles in the development of diseases. Understanding the association between diseases and genes can be enhanced with the identification of involved biological events in this association. Although biological knowledge has been accumulated in several databases and can be accessed through the Web, there is no specialized Web tool yet allowing for a query into the relationship among diseases, genes and biological events. For this task, we developed DigSee to search MEDLINE abstracts for evidence sentences describing that 'genes' are involved in the development of 'cancer' through 'biological events'. DigSee is available through http://gcancer.org/digsee. Source

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