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Search Results: 1 - 10 of 29323 matches for " Yong-Gil; "
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Perspectives on Technology Transfer Strategies of Korean Companies in Point of Resource and Capability Based View
Park,Seung-Ho; Lee,Yong-Gil;
Journal of technology management & innovation , 2011, DOI: 10.4067/S0718-27242011000100013
Abstract: technology transfer (or sharing) is a common way to share external sources. there have been many studies on the relationship of self-r&d and technology transfer regarding its theoretical background and its efficiency. this present research has been developed by examining how a concrete measure of a company or a firm's real performance (increased sales ratio; growth rate) is related to the variables of resources and capabilities using the resource-based theory and open innovation model. the approach of this research is unique in that it examines a sample comprising of licensing-in and technological cooperation variables, categorizes forms according to industry, and looks at such unique variables as a "process" (the ratio of ceo's and related-person's stocks). the data on 361 korean firms was gathered from korea's data analysis, retrieval, and transfer system and worldwide intellectual property search. findings show that human, technology, and fixed assets are related positively to financial performance, and searching, absorbing, and openness capabilities as a control effect is related positively to a firm's increased sales ratio. strategic plans for technology transfer companies are also included in this research.
Interleukin-34 produced by human fibroblast-like synovial cells in rheumatoid arthritis supports osteoclastogenesis
Seung-Jun Hwang, Bongkun Choi, Soon-Suk Kang, Jae-Ho Chang, Yong-Gil Kim, Yeon-Ho Chung, Dong Sohn, Min So, Chang-Keun Lee, William H Robinson, Eun-Ju Chang
Arthritis Research & Therapy , 2012, DOI: 10.1186/ar3693
Abstract: IL-34 levels were determined in the RA synovium, synovial fluid (SF) and fibroblast-like synovial cells (FLS) by immunohistochemistry, real-time PCR, enzyme-linked immunosorbent assay and immunoblotting. RA activity was assessed using Disease Activity Score 28 (DAS28) activity in the plasma collected at baseline and one year after treatment. Conditioned media (CM) were prepared from RA FLS culture with tumor necrosis factor alpha (TNFα) for 24 hours and used for functional assay.IL-34 was expressed in the synovium, SF, and FLS from RA patients. The production of IL-34 in FLS was up-regulated by TNFα in RA samples compared with osteoarthritis (OA) patients. Importantly, the preferential induction of IL-34 rather than M-CSF by TNFα in RAFLS was mediated by the transcription factor nuclear factor kappa B (NF-κB) and activation of c-Jun N-terminal kinase (JNK). IL-34 elevation in plasma from RA patients was decreased after the administration of disease-modifying anti-rheumatic drugs (DMARDs) in accordance with a decrease in DAS28. CM from RAFLS cultured with TNFα promoted chemotactic migration of human peripheral blood mononuclear cells (PBMCs) and subsequent osteoclast (OC) formation, effects that were attenuated by an anti-IL-34 antibody.These data provide novel information about the production of IL-34 in RA FLS and indicate that IL-34 is an additional osteoclastogenic factor regulated by TNFα in RA, suggesting a discrete role of IL-34 in inflammatory RA diseases.Rheumatoid arthritis (RA) is an autoimmune chronic inflammatory disease characterized by bone and cartilage destruction that is mediated by bone-resorbing osteoclasts (OCs) [1,2]. OCs differentiate from the monocyte/macrophage lineage of hematopoietic myeloid progenitors in response to macrophage colony-stimulating factor (M-CSF) and RANKL (receptor activator of NF-κB ligand) [3,4] and participate in a variety of inflammatory bone degenerative diseases. OC differentiation correlates with the severity of the
The Teaching Method of Creative Education  [PDF]
Yong Gil Lee
Creative Education (CE) , 2013, DOI: 10.4236/ce.2013.48A006
Abstract: This paper is the study on the meaning of 5 stages of teaching in creative education. The five-stage teaching of creative education is one of the teaching methods set up as educational methodology for the education purpose of human creativity cultivation. Creativity is understood as universal and holistic aspect of human in creative education, and the spheres of creativity can be classified into physical-physiological sphere, social sphere, rational sphere, moral sphere, artistic sphere, and religious sphere in human life and the properties of value ability in each sphere are presented. Vividness in physical-physiological sphere, cooperation in social sphere, quest in rational sphere, virtue in moral sphere, beauty in artistic sphere, and belief in religious sphere are defined as the properties of value ability and presented the educational purpose. Such spheres of creativity distinguish universal human life and the cultivation of creativity are established as the educational purpose. Teaching method in creative education consists of the five stages of teaching as integrated teaching-studying to cultivate the properties of value ability in each sphere of creativity, which is the stage of idea-discovery-digging-manifestation-development to encourage learner’s freedom and willingness with teacher’s love and guide. Learner is the subject in the study course in the five-stage teaching and it is the teaching-studying theory to cultivate value ability through the learner’s thinking and experience, connecting the ideal type of thinking for value creation to the ideal type of teaching-studying. Freedom and willingness as the ideal type of thinking for value creation are explained in theoretical level and the actual measure for education is tried in the teaching theory by the five-stage teaching of idea-discovery-digging-manifestation-development as the ideal type of teaching-studying. In other words, creative education is to build the ideal type of thinking for value creation in advance and then present the corresponding teaching-studying. The five-stage of teaching in creative education is to build theoretical system of education to allow students to make creative value by themselves through the cultivation of human ability, changing logical order to time series in thinking and then applying it to education. The five-stage of teaching in creative education is the formulization of thinking for value education applied to studying. It is theoretical composition of the stages to develop thinking for value creation through the experiences of the activity spheres,
Increased vitamin D is associated with decline of naïve, but accumulation of effector, CD8 T cells during early aging  [PDF]
Yong Gil Hwang, Hui-Chen Hsu, Fei Chu Lim, Qi Wu, PingAr Yang, Gordon Fisher, Gary R. Hunter, John D. Mountz
Advances in Aging Research (AAR) , 2013, DOI: 10.4236/aar.2013.22010
Abstract:

Given the protective roles of 25-hydroxyvitamin D (25(OH)D or vitamin D) in musculoskeletal health and the potential beneficial effects of vitamin D supplementation in reducing the risk of various chronic diseases, intensive repletion of vitamin D has been widely advocated. Of note, CD8 T cells have the highest levels of the vitamin D receptor compared with other major immune cells. The effects of vitamin D on CD8 T cells during aging, however, remain unclear. This study determined the relationship between vitamin D levels and CD8 T cell status in 34 healthy female subjects (all >60 years old). The CD8 T-cell phenotype was defined by the surface expression of CD28 and CD95. The low-25(OH)D serum groups (≤30 ng/ml) had higher percentages of CD28+CD95CD8+ (na?ve) T cells and lower percentages of CD28+CD95+CD8+ (effector) T cells. By contrast, subjects with high levels of 25(OH)D had very low percentages of na?ve CD8 T cells but very high percentages of effector CD8 T cells. There was a significant inverse correlation between 25(OH)D levels and the frequency of na?ve CD8 T cells. The results show that higher levels of vitamin D are correlated with decreased frequencies of na?ve CD8 T cells during early aging, suggesting that higher levels of 25(OH)D accelerate CD8 T cell senescence. These results warrant further evaluation of the effects of vitamin D supplementation in immune aging.

Carbon Sequestration in Soil Cooperated with Organic Composts and Bio-Char during Corn (Zea mays) Cultivation  [PDF]
JoungDu Shin, Sun-Il Lee, Woo-Kyun Park, Yong-Su Choi, Seung-Gil Hong, Sang-Won Park
Journal of Agricultural Chemistry and Environment (JACEN) , 2014, DOI: 10.4236/jacen.2014.34018
Abstract: Background: The objective of this study was to estimate the carbon sequestration in soils cooperated with organic composts and bio-char during corn cultivation. Methods and Results: For the experiment, the soil texture used in this study was clay loam, and application rates of chemical fertilizer and bio-char were 230-107-190 kg·ha-1 (N-P2O5-K2O) as recommended amount after soil test and 0.2% to soil weight. The soil samples were periodically taken at every 15-day intervals during the experimental periods. The treatments consisted of cow compost, pig compost, swine digestate from aerobic digestion system, and their bio-char cooperation. For estimating soil C sequestration, it is determined by the net balance between carbon inputs and outputs during corn cultivation periods. For the experimental results, it found that applications of aerobic swine digestate, cow compost, and pig compost could sequester C by 38.9%, 82.2% and 19.7% in soil, respectively, when bio-char from rice hulls was cooperated with soil. For plant responses, application of bio-char in the corn field for carbon sequestration was not occurred the damage of corn growth. Conclusion: When bio-char from rice hulls was cooperated with soil, applications of aerobic swine digestate, cow compost, and pig compost could sequester C by 38.9%, 82.2% and 19.7% in soil, respectively. Therefore, addition of bio-char with organic composts could have a potential soil C sequestration in agricultural practices.
Microstructure and Mechanical Properties of Heterogeneous Ceramic-Polymer Composite Using Interpenetrating Network
Eun-Hee Kim,Yeon-Gil Jung,Chang-Yong Jo
Journal of Nanomaterials , 2012, DOI: 10.1155/2012/932059
Abstract: Prepolymer, which can be polymerized by a photo, has been infiltrated into a porous ceramic to improve the addition effect of polymer into the ceramic, as a function of the functionality of prepolymer. It induces the increase in the mechanical properties of the ceramic. The porous alumina (Al2O3) and the polyurethane acrylate (PUA) with a network structure by photo-polymerization were used as the matrix and infiltration materials, respectively. The porous Al2O3 matrix without the polymer shows lower values in fracture strength than the composites, since the stress is transmitted more quickly via propagation of cracks from intrinsic defects in the porous matrix. However, in the case of composites, the distribution of stress between heterophases results in the improved mechanical properties. In addition, the mechanical properties of composites, such as elastic modulus and fracture strength, are enhanced with increasing the functionality of prepolymer attributed to the crosslinking density of polymer.
Dyon condensation in topological Mott insulators
Gil Young Cho,Cenke Xu,Joel E. Moore,Yong Baek Kim
Physics , 2012, DOI: 10.1088/1367-2630/14/11/115030
Abstract: We consider quantum phase transitions out of topological Mott insulators in which the ground state of the fractionalized excitations (fermionic spinons) is topologically non-trivial. The spinons in topological Mott insulators are coupled to an emergent compact U(1) gauge field with a so-called "axion" term. We study the confinement transitions from the topological Mott insulator to broken symmetry phases, which may occur via the condensation of dyons. Dyons carry both "electric" and "magnetic" charges, and arise naturally in this system because the monopoles of the emergent U(1) gauge theory acquires gauge charge due to the axion term. It is shown that the dyon condensate, in general, induces simultaneous current and bond orders. To demonstrate this, we study the confined phase of the topological Mott insulator on the cubic lattice. When the magnetic transition is driven by dyon condensation, we identify the bond order as valence bond solid order and the current order as scalar spin chirality order. Hence, the confined phase of the topological Mott insulator is an exotic phase where the scalar spin chirality and the valence bond order coexist and appear via a single transition. We discuss implications of our results for generic models of topological Mott insulators.
Evolution or Revolution of Organizational Information Technology – Modeling  [PDF]
Niv Ahituv, Gil Greenstein
Journal of Service Science and Management (JSSM) , 2010, DOI: 10.4236/jssm.2010.31006
Abstract: This paper suggests a new normative model that attempts to analyze why improvement of versions of existing decision support systems do not necessarily increase the effectiveness and the productivity of decision making processes. Moreover, the paper suggests some constructive ideas, formulated through a normative analytic model, how to select a strategy for the design and switching to a new version of a decision support system, without having to immediately run through a mega conversion and training process while temporarily losing productivity. The analysis employs the information structure model prevailing in Information Economics. The study analytically defines and examines a systematic informativeness ratio between two information structures. The analysis leads to a better understanding of the performances of decision support information systems during their life-cycle. Moreover, this approach explains normatively the phenomenon of “leaks of productivity”, namely, the decrease in productivity of information systems, after they have been upgraded or replaced with new ones. Such an explanation may partially illuminate findings regarding the phenomenon known as the Productivity Paradox. It can be assumed that the usage of the methodology that is presented in this paper to improve or replace information structure with systematically more informative versions of information structures over time may facilitate the achievement of the following major targets: increase the expected payoffs over time, reduce the risk of failure of new versions of information systems, and reduce the need to cope with complicated and expensive training processes.
Electrically Tunable Macroscopic Quantum Tunneling in a Graphene-based Josephson Junction
Gil-Ho Lee,Dongchan Jeong,Jae-Hyun Choi,Yong-Joo Doh,Hu-Jong Lee
Physics , 2011, DOI: 10.1103/PhysRevLett.107.146605
Abstract: Stochastic switching-current distribution in a graphene-based Josephson junction exhibits a crossover from the classical to quantum regime, revealing the macroscopic quantum tunneling (MQT) of a Josephson phase particle at low temperatures. Microwave spectroscopy measurements indicate a multi-photon absorption process occurring via discrete energy levels in washboard potential well. The crossover temperature for MQT and the quantized level spacing are controlled with the gate voltage, implying its potential application to gate-tunable superconducting quantum bits.
Coexisting multiple dynamic states generated by magnetic field in Bi-2212 stacked Josephson junctions
Yong-Duk Jin,Hu-Jong Lee,A. E. Koshelev,Gil-Ho Lee,Myung-Ho Bae
Physics , 2009, DOI: 10.1209/0295-5075/88/27007
Abstract: Josephson vortices in naturally stacked Bi-2212 tunneling junctions display rich dynamic behavior that derives from the coexistence of three basic states: static Josephson vortex lattice, coherently moving lattice, and incoherent quasiparticle tunneling state. Rich structure of hysteretic branches observed in the current-voltage characteristics can be understood as combinatorial combinations of these three states which are realized in different junctions and evolve separately with magnetic field and bias current. In particular, the multiple Josephson-vortex-flow branches at low bias currents arise from the individual depinning of Josephson vortex rows in each junction.
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