• Title/Summary/Keyword: Research Institutes

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The Effect of Multi-ignition Strategy on the Combustion and Emission Characteristics in a Ultra Lean Burn GDI Engine (초희박 GDI엔진에서 다단점화에 의한 연소 및 배기 특성)

  • Park, Cheol-Woong;Kim, Sung-Dae;Kim, Hong-Suk;Oh, Hee-Chang;Bae, Choong-Sik
    • Transactions of the Korean Society of Automotive Engineers
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    • v.20 no.3
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    • pp.106-112
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    • 2012
  • Since air pollution problem by emissions from automotive vehicles has become social issues, lean-burn gasoline direct injection (GDI) engine is focused as an alternative to meet the requirement of reinforced emission regulation and improved fuel consumption. Spray-guided type DI combustion is promising technology, which characterized by the centrally mounted injector and closely positioned spark plug, since stable lean combustion can be realized even at ultra-lean mixture condition. In the present study, the effect of multi-ignition with developed charge coil on combustion and emission characteristics was investigated in optical accessible single cylinder engine. In order to fully understand the in-cylinder phenomena and the mechanisms of emission production, optical diagnostics, such as flame visualization was also carried out at frequently using operating condition. Multi-ignition is effective to improve fuel economy but increase NOx emission at flammability limit.

Development of Evaluation Items and Measurement Indices for Knowledge Management Performance of Government-funded Research Institutes (정부출연연구소의 지식관리 성과 평가항목 및 측정지표 개발)

  • Jung, Taik-Yeong;Kim, Sang-Hoon;Park, Il-Kyu;Kim, Chang-Kyu
    • Journal of Information Technology Services
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    • v.10 no.4
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    • pp.171-189
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    • 2011
  • KAs information and knowledge are increasingly becoming more important in the knowledge-driven society, knowledge management, as a very important management paradigm, is securing firm position in private and public sectors. Complying with this paradigm, government-funded research institutes in science-technology sector are actively utilizing knowledge management by employing knowledge management system and evaluating its applications' performance. The purpose of this study is to develop evaluation items and measurement indices to rationally measure knowledge management performance of the government-funded research institutes and to verify the feasibility of applying these evaluation items and indices. To achieve this research goal, the evaluation model of knowledge management performance was constructed by reviewing and integrating the existing studies, and subsequently, evaluation areas, evaluation items, measurement indices were derived from this evaluation model. Also, the feasibility analysis on the evaluation items and measurement indices was performed by means of FGI(Focus Group Interview) with the knowledge management experts belonging to Korean government-funded institutions in science-technology sector. The implications of this study are as follows : in theoretical perspective, this study has proposed a criterion frame to evaluate knowledge management performance, and has rationally drawn evaluation items and measurement indices from the criterion frame. And in practical perspective, this study has improved the validity and practicality of the measurement indices, which can lead to more reasonable and easier evaluation of knowledge management performance of the government-funded research institutes.

A study on the professional mobility of researchers in Korean government-funded research institutes (활용중심의 연구인력 유동성 현황 연구 : 우리나라 이공계 출연(연)을 중심으로)

  • Kim, Karp-Soo;Kwak, Chang-Gyu
    • Journal of Korea Technology Innovation Society
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    • v.10 no.2
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    • pp.334-360
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    • 2007
  • This paper presents an emerging concept, professional mobility in S&T innovation system, that focus on the utilization of highly qualified researchers without recruiting. In this paper we divided the utilization of external researcher into four types: (1)visiting/post-Doc/guest researcher, (2)collaborating research student, (3)part-timer or trainee and (4)foreign researcher. From 2002 to 2005 in 19 Korean government-funded research institutes, while total researchers have increased by 13.3%, external researchers have decreased from 39.2% to 35.7%. In 2005, visiting and foreign researchers were only 6.5% of total external researchers. It may indicate that the innovation capability of Korean research institutes is on the quite limited situation compared to foreign research institutes. The financial and institutional support programs for promoting the professional mobility are also insufficient in Korean S&T innovation system.

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The physical properties of several HTS coated conductors

  • Lee, Nam-Jin;Oh, Sang-Soo;Song, Kyu-Jeong;Ha, Dong-Woo;Kim, Ho-Sup;Ha, Hong-Soo;Ko, Rock-Kil;Kim, Tae-Hyung;Kim, Sang-Cheol;Yu, Kwon-Kuk;Moon, Seung-Hyun;Youm, Do-Jun
    • Progress in Superconductivity and Cryogenics
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    • v.9 no.4
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    • pp.19-23
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    • 2007
  • The superconducting properties of several HTS coated conductors (CC), which had different tape structures, fabricated by KERI, X and Y institutes were compared. We have fabricated the $high-J_c$ SmBCO CC, which has 273.5 A/cm, $1.2MA/cm^2$ and 93.5 K for $I_C,\;J_C\;and\;T_{c-zero}$, respectively, using the EDDC (Evaporation using Drum in Dual Chambers) process. Both X and Y institutes CCs, however, were purchased. The n-values of KERI, X and Y institutes CCs are 58.5, 40.7 and 31.5 in $V=1{\sim}10{\mu}V$ criterion, respectively. The in-field properties of $I_C$ at 77K were investigated and the $J_C(B)/J_C(0G)$ at 0.5 T with $B{\perp}$ ab-plane are 0.31, 0.19 and 0.24 for KERI, X and Y institutes CCs, respectively. From the $I_C-{\theta}-B$ measurement, we observed that the ab-plane of ReBCO phase was tilted for the ab-plane of substrate in the KERI and X institutes CCs. The tilted angle is about 5 degree. We confirmed that the peak shift (as an inclined texture) was observed by X-ray (102) pole figures of the SmBCO for the KERI CC.

Research Institutes on Traditional Medicine in East Asian Countries and U.S.A. (세계 전통의학 연구기관의 연구 동향 분석)

  • Shin, Hyeon-Kyoo;Lim, Byung-Mook
    • Korean Journal of Oriental Medicine
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    • v.8 no.2 s.9
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    • pp.67-74
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    • 2002
  • The Objective of this study was to investigate present conditions of research institutes on traditional medicine in China, Chinese taipei, Japan and U.S.A. The subject institutes were China academy of traditional chinese medicine, National research institute of chinese medicine, Oriental medicine research center of the Kitasato institute, Institute of natural medicine in Toyama medical and pharmaceutical university, National center for complementary and alternative medicine. Various publications printed by each institute were collected and each web site wis searched. For further analysis, Interviews with managers and researchers of each institute were carried out.

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Organizational Composition and R&D Performance in Science and Technology Government-funded Research Institutes (과학기술분야 출연연 인력 다양성과 성과간의 관계분석)

  • Han, Sang-Yeon;Gwak, Gyu-Tae;Kim, Seung-Tae
    • Proceedings of the Korea Technology Innovation Society Conference
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    • 2017.11a
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    • pp.1213-1244
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    • 2017
  • This study used a resource-based perspective to analyse the effects of organizational composition on the R&D performance of science and technology government-funded research institutes (GFRIs). We assumed that the composition of each GFRI would eventually be regarded as absorptive capacity and act as a moderating variable between R&D investment and performance. We used a panel generalized least squares (GLS) model with fixed effects to analyse panel data from 115 Korean GFRIs between 2011 and 2015. Our findings show that R&D investment of GFRIs has a direct and positive effect on performance. We also analysed how organizational composition can moderate the effect of R&D investment on performance. The findings provide evidence that organizational composition plays a moderating role between R&D investment and performance. Finally, this study discusses policy implications, its limitations, and also highlights future research directions.

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An Exploratory Study of the Relationship Between Creativity Management Factors and Perceived R&D Performance in Korean Government-Supported Research Institutes (창의성경영과 지각된 R&D성과의 관계에 관한 탐색적 연구 - 과학기술분야 정부출연연구기관을 중심으로 -)

  • Son, Tae-Won;Shin, You-Jung;Yu, Sung-Jae
    • Knowledge Management Research
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    • v.4 no.1
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    • pp.1-19
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    • 2003
  • The purpose of this study is to explore the effect of creativity management factors on perceived R&D performance. To do this, the data (885cases) were collected from 19 Korean Government-supported Research Institutes, and 3 hypotheses derived from the model of creativity management(after here CM) were tested. Major findings are as follows: 1) CM constructs are grouped into diversity, autonomy, connectivity, redundancy and flexibility factors; 2) The major factors that can explain R&D performance perceived by scientists and engineers are connectivity, autonomy, diversity and flexibility; 3) All CM factors have significant relationship with satisfaction of the employees; 4) Flexibility and connectivity factors give effects on turnover intention of the members. This study has some limitations in model building and empirical testing. This study, however, provides theoretical and managerial implications about CM and R&D management, particularly Government-supported Research Institutes in Korea.

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Pain Control Effects of $Myprodol^{(R)}$ after Periodontal Surgery and Dental Implant Surgery (치주 수술 및 인공 치아 매식술 후 $Myprodol^{(R)}$의 동통 억제 효과에 대한 연구)

  • Cho, Kyoo-Sung;Lee, Jung-Hoon;Kim, Hyun-Young;Suh, Jong-Gin;Choi, Seong-Ho;Chai, Jung-Kiu;Kim, Chong-Kwan
    • Journal of Periodontal and Implant Science
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    • v.30 no.1
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    • pp.1-11
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    • 2000
  • Although various analgesics have been administrated for postoperative pain control, postoperative pain has not been adequately controlled . The purpose of this study was to evaluate the effects and patient's satisfaction of $Myprodol^{(R)}$(combination analgesics with codeine, ibuprofen, paracetamol) compared to Acetamionphen and placebo drug after periodontal surgery and dental implant surgery. We studied 98 cases of outpatients which were composed of 67 cases of flap operation(which separated to 3 groups: Placebo group(n=25), $Myprodol^{(R)}$ group(n=22), Acetaminophen group(n=20)) and 21 cases of dental implant surgery(which separated to 3 groups : Placebo group(n=10), $Myprodol^{(R)}$ group(n=12), Acetaminophen group(n=9)). We evaluated the postoperative pain(Pain 1), Pain after first drug administraion(Pain 2), the degrees of pain reduction(pain 3), patient's satisfaction for drug, and side-effects. We obtained following results; 1. In Pain 1, making a comparison among groups, there was no significant difference in both cases of flap operation-group and dental implant surgery-group 2. In Pain 2, establishing a comparison among groups, there was no significant difference in flap operation-group, but significant difference was seen between placebo group and $Myprodol^{(R)}$ group in cases of dental implant surgery group(P<0.05). 3. In Pain 3, making a comparison among groups, $Myprodol^{(R)}$ group showed significant differences compared to placebo group and Acetaminophen group in both cases of flap operation group and dental implant surgery group(P<0.05). 4. In patient's satisfactory score, making a comparison among groups, there were significant differences between placebo group and $Myprodol^{(R)}$ group in cases of flap operation group and between $Myprodol^{(R)}$ group and Acetaminophen group in cases of dental implant surgery group(P<0.05). 5. Making a comparison in side-dffect, no significant differrence was seen. Our conclusion is that $Myprodol^{(R)}$ is a effective oral analgesics to the patients who underwent periodontal surgery or implant surgery for it's synergism among three dugs.

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INTRODUCTION TO FIRE SCIENCE RESEARCH IN KOREA

  • 이윤영
    • Fire Science and Engineering
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    • v.12 no.2
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    • pp.69-75
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    • 1998
  • Overall view of fire science research in Korea is introduced by observing research papers published in the Journal of Korean Institute of Fire Science and Engineering, together with research interests and researchs undergoing at universities and research institutes. The role of Koran Institute of Fire Science and Engineering in promoting fire reseaches in Korea is described. In addition, research projects conducted Korean Institute of Fire Science and Engineering in cooperation with universities and research institutes are introduced.

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