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Search Results: 1 - 10 of 3820 matches for " In-Cheol Cho "
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UTBot: A Virtual Agent Platform for Teaching Agent System Design
In-Cheol Kim
Journal of Multimedia , 2007, DOI: 10.4304/jmm.2.1.48-53
Abstract: We introduce UTBot, a virtual agent platform for teaching agent system design. UTBot implements a client for the Unreal Tournament game server and Gamebots system. It provides students with the basic functionality required to start developing their own intelligent virtual agents to play autonomously UT games. UTBot includes a generic agent architecture, CAA (Context-sensitive Agent Architecture), a domain-specific world model, a visualization tool, several basic strategies (represented by internal modes and internal behaviors), and skills (represented by external behaviors). The CAA architecture can support complex long-term behaviors as well as reactive short-term behaviors. It also realizes high context-sensitivity of behaviors. We also discuss our experience using UTBot as a pedagogical tool for teaching agent system design in undergraduate Artificial Intelligence course.
Characterization of Porcine Endogenous Retrovirus Clones from the NIH Miniature Pig BAC Library
Seong-Lan Yu,Woo-Young Jung,Kie-Chul Jung,In-Cheol Cho,Hyun-Tae Lim,Dong-Il Jin,Jun-Heon Lee
Journal of Biomedicine and Biotechnology , 2012, DOI: 10.1155/2012/482568
Abstract: Pigs have been considered as donors for xenotransplantation in the replacement of human organs and tissues. However, porcine endogenous retroviruses (PERVs) might transmit new infectious disease to humans during xenotransplantation. To investigate PERV integration sites, 45 PERV-positive BAC clones, including 12 PERV-A, 16 PERV-B, and 17 PERV-C clones, were identified from the NIH miniature pig BAC library. The analysis of 12 selected full-length sequences of PERVs, including the long terminal repeat (LTR) region, identified the expected of open reading frame length, an indicative of active PERV, in all five PERV-C clones and one of the four PERV-B clones. Premature stop codons were observed in only three PERV-A clones. Also, eleven PERV integration sites were mapped using a 5000-rad IMpRH panel. The map locations of PERV-C clones have not been reported before, thus they are novel PERV clones identified in this study. The results could provide basic information for the elimination of site-specific PERVs in selection of pigs for xenotransplantation.
Matthew’s and Paul’s inclusive tendencies: A comparison
In-Cheol Shin,Andries G. van Aarde
HTS Theological Studies/Teologiese Studies , 2009, DOI: 10.4102/hts.v61i4.488
Abstract: This article compares the inclusive tendencies of Matthew and Paul by evaluating the inclusive structure of their respective communities. The article mainly investigates two issues: Matthew’s and Paul’s practice of the Law and their perspectives on the Gentiles. The community that strictly keeps the Law is a more exclusive community. The Law is used to reject unclean and lower class people from the Israelite community. Secondly, Matthew’s perspective on the Gentiles and that of Paul are investigated to determine tendencies of inclusivity in their respective thinking. It is observed that the Law-free Gentile community is more inclusive than the Law-observant Gentile community. The approach adopted by this article is one of cross-cultural interpretation.
Genome-wide identification of quantitative trait loci in a cross between Hampshire and Landrace II: Meat quality traits
Ellen Markljung, Martin H Braunschweig, Peter Karlskov-Mortensen, Camilla S Bruun, Milena Sawera, In-Cheol Cho, Ingela Hedebro-Velander, ?sa Josell, Kerstin Lundstr?m, Gertrud von Seth, Claus B J?rgensen, Merete Fredholm, Leif Andersson
BMC Genetics , 2008, DOI: 10.1186/1471-2156-9-22
Abstract: In total, we analyzed 39 meat quality traits and identified eight genome-wide significant QTL peaks in four regions: one on chromosome 3, two on chromosome 6 and one on chromosome 16. At least two of the QTLs do not appear to have been detected in previous studies. On chromosome 6 we identified QTLs for water content in M. longissimus dorsi (LD), drip loss in LD and post mortem pH decline in LD. On chromosomes 3 and 16 we identified previously undetected QTLs for protein content in LD and for freezing and cooking loss respectively.We identified at least two new meat quality trait QTLs at the genome-wide significance level. We detected two QTLs on chromosome 6 that possibly coincide with QTLs detected in other studies. We were also able to exclude the C1843T mutation in the ryanodine receptor (RYR1) as a causative mutation for one of the chromosome 6 QTLs in this cross.Since the first Quantitative Trait Locus (QTL) analysis in pigs was published in 1994 [1], QTL analyses have been widely used to identify chromosomal regions harbouring genes for various complex traits in the pig such as growth, carcass composition and meat quality [2]. Meat quality traits have been studied before using crosses between Wild Boar and Large White [3,4], Meishan and Yorkshire [5], Meishan and Large White/Landrace [6], Duroc and Landrace/Yorkshire [7], Berkshire and Yorkshire [8], Iberian and Landrace [9], Pietrain and Meishan and Wild Boar [10], and between Duroc and Berlin Miniature pig [11].In this study we used a cross between Finnish Landrace and Swedish Hampshire set up by the Swedish breeding company Quality Genetics, as a combined intercross/backcross design. Landrace has been used in several QTL crosses before, but so far the Hampshire breed has not been used in any QTL intercross which provided an opportunity to detect specific QTL alleles that have been selected in this breed. Landrace and Hampshire pigs differ in a number of traits including coat colour, body composition, ferti
An accurate method for quantifying and analyzing copy number variation in porcine KIT by an oligonucleotide ligation assay
Bo-Young Seo, Eung-Woo Park, Sung-Jin Ahn, Sang-Ho Lee, Jae-Hwan Kim, Hyun-Tae Im, Jun-Heon Lee, In-Cheol Cho, Il-Keun Kong, Jin-Tae Jeon
BMC Genetics , 2007, DOI: 10.1186/1471-2156-8-81
Abstract: PCR followed by a quantitative oligonucleotide ligation assay (qOLA) was developed for quantifying CNVs. The accuracy and precision of the assay were evaluated for porcine KIT, which was selected as a model locus. Overall, the root mean squares of bias and standard deviation of qOLA were 2.09 and 0.45, respectively. These values are less than half of those in the published pyrosequencing assay for analyzing CNV in porcine KIT. Using a combined method of qOLA and another pyrosequencing for quantitative analysis of KIT copies with spliced forms, we confirmed the segregation of KIT alleles in 145 F1 animals with pedigree information and verified the correct assignment of genotypes. In a diagnostic test on 100 randomly sampled commercial pigs, there was perfect agreement between the genotypes obtained by grouping observations on a scatter plot and by clustering using the nearest centroid sorting method implemented in PROC FASTCLUS of the SAS package. In a test on 159 Large White pigs, there were only two discrepancies between genotypes assigned by the two clustering methods (98.7% agreement), confirming that the quantitative ligation assay established here makes genotyping possible through the accurate measurement of high KIT copy numbers (>4 per diploid genome). Moreover, the assay is sensitive enough for use on DNA from hair follicles, indicating that DNA from various sources could be used.We have established a high resolution quantification method using an oligonucleotide ligation assay to measure CNVs, and verified the reliability of genotype assignment for random animal samples using the nearest centroid sorting method. This new method will make it more practical to determine KIT CNV and to genotype the complicated Dominant White/KIT locus in pigs. This procedure could have wide applications for studying gene or segment CNVs in other species.Susceptibility to genetic disorders is known to be associated not only with single nucleotide polymorphisms (SNP), but also w
Anti-angiogenic effects of the water extract of HangAmDan (WEHAD), a Korean traditional medicine
Ji-Young Bang,Kyung-Soon Kim,Eung-Yoon Kim,Hwa-Seung Yoo,Yeon-Weol Lee,Chong-Kwan Cho,YoungJin Choi,Hyun-Ja Jeong,In-Cheol Kang
Science China Life Sciences , 2011, DOI: 10.1007/s11427-011-4144-3
Abstract: We investigated the anti-angiogenic effects of the water extract of HangAmDan (WEHAD), which is a crude extract of nine Korean medicinal substances of animal and plant origin. In human umbilical vein endothelial cells, WEHAD significantly inhibited bFGF-induced proliferation, adhesion, migration, and capillary tube formation. We used an antibody array to perform an analysis of signaling proteins, which showed up-regulated expression of various proteins including RAD51, RAD52, and p73, and down-regulated expression of pFAK. Blood vessel formation in a chick chorioallantoic membrane (CAM) treated with WEHAD was markedly reduced in length compared with a PBS-treated control group. These results suggest that inhibition of angiogenesis by WEHAD may be the mechanism of action for the anti-cancer effects of HAD.
Temperature-Compensated Damage Monitoring by Using Wireless Acceleration-Impedance Sensor Nodes in Steel Girder Connection
Dong-Soo Hong,Khac-Duy Nguyen,In-Cheol Lee,Jeong-Tae Kim
International Journal of Distributed Sensor Networks , 2012, DOI: 10.1155/2012/167120
Abstract: Temperature-compensated damage monitoring in steel girder connections by using wireless acceleration-impedance sensor nodes is experimentally examined. To achieve the objective, the following approaches are implemented. Firstly, wireless acceleration-impedance sensor nodes are described on the design of hardware components to operate. Secondly, temperature-compensated damage monitoring scheme for steel girder connections is designed by using the temperature compensation model and acceleration-impedance-based structural health monitoring methods. Finally, the feasibility of temperature-compensated damage monitoring scheme by using wireless acceleration-impedance sensor nodes is experimentally evaluated from damage monitoring in a lab-scaled steel girder with bolted connection joints.
Frustrated two-dimensional Josephson junction array near incommensurability
In-Cheol Baek,Young-Je Yun,Mu-Yong Choi
Physics , 2004, DOI: 10.1103/PhysRevB.69.172501
Abstract: To study the properties of frustrated two-dimensional Josephson junction arrays near incommensurability, we examine the current-voltage characteristics of a square proximity-coupled Josephson junction array at a sequence of frustrations f=3/8, 8/21, 0.382 $(\approx (3-\sqrt{5})/2)$, 2/5, and 5/12. Detailed scaling analyses of the current-voltage characteristics reveal approximately universal scaling behaviors for f=3/8, 8/21, 0.382, and 2/5. The approximately universal scaling behaviors and high superconducting transition temperatures indicate that both the nature of the superconducting transition and the vortex configuration near the transition at the high-order rational frustrations f=3/8, 8/21, and 0.382 are similar to those at the nearby simple frustration f=2/5. This finding suggests that the behaviors of Josephson junction arrays in the wide range of frustrations might be understood from those of a few simple rational frustrations.
Superconducting phase transitions in frustrated Josephson-junction arrays on a dice lattice
In-Cheol Baek,Young-Je Yun,Mu-Yong Choi
Physics , 2008, DOI: 10.1016/j.physc.2008.07.004
Abstract: Transport measurements are carried out on dice Josephson-junction arrays with the frustration index $f=1/3$ and 1/2 which possess, within the limit of the $XY$ model, an accidental degeneracy of the ground states as a consequence of the formation of zero-energy domain walls. The measurements demonstrate that both the systems undergo a phase transition to a superconducting vortex-ordered state at considerably high temperatures. The experimental findings are in apparent contradiction with the theoretical expectation that frustration effects in the $f=1/3$ system are particularly strong enough to suppress a vortex-ordering transition down to near zero temperature. The data for $f=1/2$ are more consistent with theoretical evaluations. The agreement between the experiments and the Monte Carlo simulations of a $XY$ model for $f=1/3$ suggests that the order-from-disorder mechanism for the removal of an accidental degeneracy may still be effective in the $f=1/3$ system. The transport data also reveal that the dice arrays with zero-energy domain walls experience a much slower critical relaxation than other frustrated arrays only with finite-energy walls.
Critical Behavior of Frustrated Josephson Junction Arrays with Bond Disorder
Young-Je Yun,In-Cheol Baek,Mu-Yong Choi
Physics , 2002, DOI: 10.1103/PhysRevLett.89.037004
Abstract: The scaling behavior of the current-voltage ($IV$) characteristics of a two-dimensional proximity-coupled Josephson junction array (JJA) with quenched bond disorder was investigated for frustrations $f=1/5$, 1/3, 2/5, and 1/2. For all these frustrations including 1/5 and 2/5 where a strongly first-order phase transition is expected in the absence of disorder, the $IV$ characteristics exhibited a good scaling behavior. The critical exponent $\nu$ indicates that bond disorder may drive the phase transitions of frustrated JJA's to be continuous but not into the Ising universality class, contrary to what was observed in Monte Carlo simulations. The dynamic critical exponent $z$ for JJA's was found to be only 0.60 - 0.77.
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