• Title/Summary/Keyword: R&D Team

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Influence of Glass Tube Diameter in the Cold Cathode Fluorescent Lamps for 40-inch LCD-TVs

  • Lee, Min-Kyu;Lee, Kyoung-Ho;Han, Kyu-Hyeon;Lee, Jae-Wook
    • 한국정보디스플레이학회:학술대회논문집
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    • 2009.10a
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    • pp.707-710
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    • 2009
  • As the inner diameter of CCFL is increased in the range of outer diameters 3~5 mm, the luminance efficiency is increased by the low power consumption. For the outer diameter 5 mm, the efficiency is linearly increased even at the range of a high current.

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A Study on the Relationship between Intra-team Conflict and Team Innovative Performance and the Mediating Role of Team Learning Behaviors in R&D Teams (연구개발팀에서 팀내 갈등과 팀 혁신성과간의 관계에서 팀 학습행동의 매개역할)

  • Lee, Jun Ho;Kim, Hack Soo;Kim, Ji Yeon
    • Knowledge Management Research
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    • v.14 no.5
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    • pp.81-100
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    • 2013
  • In this era of cut-throat competition, innovation is a source of competitive advantage, and securing core competency through innovation plays a pivotal role in ensuring the survival and growth of an organization. In an organization, R&D team is a core division driving innovation, and creative tension and conflict among researchers fuels innovative performance. Despite heated debate over the positive and negative effects of conflict, insufficiently-identified process factors have left sophisticated mechanisms between conflicts and effects unaddressed. This study assumes that team learning behaviors can bean important process factor given that conflict propels learning, and that learning is a decisive factor in creating competitive advantage. This study conducted an empirical analysis of the relationship between relationship/task conflict and team innovative performance, and the mediating role of team learning behaviors using data collected from a questionnaire sent out to the heads of 262 R&D teams and second highest-ranking officials thereof. The analysis conducted based on structural equation model indicates that relationship conflict has negatively affected team learning behaviors, whereas task conflict has positively influenced team learning behaviors(full mediation effect), team learning behaviors has positively influenced team innovative performance. Based on these results, the study has suggested implications of intra-team conflict and team learning behaviors for team innovative performance.

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Effect of Anti-inflammation on Oryeong-san Formulation for Mix Extract Tablet (오령산 정제 개발 및 항염증 효과)

  • Kim, Se Jin;Leem, Hyun Hee;Nam, Won Hee;Son, Su Mi;Choi, Hye Min;Kim, Myung Jin;Kim, Jung Ok;Lee, Hwa Dong
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.34 no.6
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    • pp.348-354
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    • 2020
  • Oryeong-san (ORS) is a traditional Korean herbal medicine widely used for renal associated diseases, composed of five medicine herbs; Atractylodes japonica Koidzumi, Cinnamomum cassia Presl, Polyporus umbellatus Fries, Poria cocos Wolf and Alisma orientale Juzepzuk. We studied to improve the convenience of intake and portability by developing modernized dosage forms, and examined the effect on anti-inflammation of ORS. In order to develop the tablet formulation of ORS (ORS-F), the tablets were evaluated on the basis of physical characteristics include diameter, thickness, weight variation, hardness, friability and disintegration. To analyze the marker components of ORS-F, eight index markers from five herbal medicines were chosen. And the method using high performance liquid chromatography (HPLC) with diode-array detector method was established for the simultaneous analysis. The biological activities were examined the effect of ORS-F on pro-inflammation mediated by LPS-stimulation. The production of nitric oxide (NO) and cytokines were determined by reacting cultured medium with griess reagent and enzyme-linked immunosorbent assay (ELISA). The expression of cyclooxygenase-2 (COX-2) and inducible NO synthase (iNOS) were investigated by Western blot and RT-PCR. The anti-oxidant activities of OJS-F increased markedly, in a dose-dependent manner. and, The total phenolic compound and flavonoids contents of OJS-F were 10.20±0.09 ㎍/㎎ and 12.86±0.86 ㎍/㎎. OJS-F which is LPS has diminished in the LPS-induced release of inflammatory mediators (NO, iNOS, COX2 and PGE2) and pro-inflammatory cytokines (TNF-α, IL-6 and IL-1β) from the RAW264.7 macrophages. Therefore, the developed formulation for tablet of ORS-F provide efficiency and usability, and indicated effect of anti-inflammation.

The Application and Verification of the 2MVA Battery Energy Storage System(BESS) with Wind-turbine in Micro-grid of Gapado, Jeju (가파도 마이크로그리드에서의 풍력발전 연계를 위한 2MVA급 배터리 에너지 저장시스템(BESS) 적용 및 실증)

  • Kim, Seung-Mo;Oh, Seung-Jin;Lee, Jong-Hak;Kim, Tae-Hyeong;Kwon, Byung-Ki;Ahn, Jae-Min;Jin, Kyung-Min;Choi, Chang-Ho
    • The Transactions of the Korean Institute of Power Electronics
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    • v.19 no.4
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    • pp.303-311
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    • 2014
  • This paper shows the test result of 2MVA BESS(Battery Energy Storage System) with wind-turbine in micro-grid of the Gapado. To implement of micro-grid with BESS, characteristics of generator and customer load in grid are considered. Also, to operate of 2-parallel PCU(Power Conversion Unit) in BESS, the droop control is adopted with operating mode of grid independent. Performances of BESS with wind-turbine were verified by analysis of power quality such as voltage harmonics, ratio of voltage and frequency regulation, and by measurement of waveform such as output voltage and current.

Development of Recombinant Human $Interferon-{\beta}-1a$ Analogs using Serum Free Suspension Culture of CHO Cell

  • Lee, Jong-Min;Oh, Han-Kyu;So, Moon-Kyoung;Yang, Ji-Hye;Yoon, Ho-Chul;Ahn, Ji-Soo;Kim, Ji-Tai;Yoo, Ji-Uk;Byun, Tae-Ho
    • 한국생물공학회:학술대회논문집
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    • 2005.04a
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    • pp.35-35
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    • 2005
  • Recombinant human $interferon-{\beta}-1a(rIFN-{\beta})$ is a single glycosylated protein (at N80, 1N) with anti-viral activity. However, present drugs have a relatively short serum half-life of $rIFN-{\beta}$, thus patients suffer from frequent $infections.^{1)}$ To improve its half-life, eight glycosylation analogs were prepared, which have additional N-linked glycosylation consensus sequences (N-X-T/S) within the $IFN-{\beta}$ molecule and/or at C-terminal. Each $rIFN-{\beta}$ analog was examined for the presence of additional N-linked glycosylation and the maintenance of anti-viral activity in CHO cells. The molecular weights of five analogs were not changed. However, two analogs, R27T within $rIFN-{\beta}$ (27 kDa, 2N) and GNITVNITV at C-terminal (29kDa, 2N), showed a clear increase in molecular weights, compared to native $rIFN-{\beta}$ (23 kDa, 1N). And another combined analog of R27T+GNITVNITV showed increased molecular weight (33 kDa, 3N). It was confimed that the molecular weight increment of analogs was caued by the N-linked glycosylation with the treatment of N-glycansae. In the case of anti-viral activity, the analog GNITVNITV showed a reduction in activity compared to native $IFN-{\beta}$, whereas the analogs R27T and R27T+GNITVNITV were found to have distinctly increased activities. Pharmacokinetic study in rats also disclosed that the analogs R27T and R27T+GNITVNITV had 2 3 fold increased serum half-life, respectively. In conclusion, the addition of N-linked glycosylation in $rIFN-{\beta}$ increased serum half-life, thereby its less frequent administration will be expected.

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Analysis of Water Quality caused by Improvement of Sewage Treatment Plant in Masan Bay (하수처리장 개선이 마산만 수질에 미치는 영향분석)

  • Oh Hyun-Taik;Goo Jun-Ho;Park Sung-Eun;Choi Yun-Sun;Jung Rae-Hong;Choi Woo-Jeung;Lee Won-Chan;Park Jong-Soo
    • Journal of Environmental Science International
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    • v.14 no.8
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    • pp.777-783
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    • 2005
  • For the sustainable management of marine ecosystem in Masan Bay, we have to assess the carrying capacity and standard of target water quality. In this research, we assume that all pollutants loads are treated in Dukdong sewage treatment plant, then we simulate the physical-biological model for prediction water quality for the achievement of standard water quality. In 2001 year, for the achievement of COD 2.5 mg/L, we need to reduce COD $90\%$, nitrogen $30\%$, phosphate $90\%$ than that of the present value, According to these results, the water quality of sewage treatment plant is required to treat COD 13.5 mg/L, nitrogen 33.3 mg/L, phosphate 6,0 mg/L. If the sewage treatment plant will be expanded much larger in 2011, it will need to be treated in COD 6.6 mg/L, nitrogen 2.5 mg/L, phosphate 5 mg/L for the achievement of water quality standard in COD 2.5 mg/L.