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김별아(Byu La Kim),이종국(Jong Kuk Lee),송상영(Sang Young Song) 한국경영학회 2014 經營學硏究 Vol.43 No.2
In today’s competitive market environment, new product development has been a major source of a firm’s competitive advantage and the resulting firm value. However, researchers have previously shown that there is high level of risk involved with developing and introducing new products into the market and more than eighty percent of new products fail. Considering the greater risks associated with more innovative new products than those with less innovative ones, we distinguish between radical and incremental new products and examine their impact on firm value. We further investigate the moderating role of firm reputation on the relationship between the firm value and the radical and incremental new products. We collected data on the new product developments, firm reputation, and financial information in the pharmaceutical industries between 1997 and 2010 from various secondary data sources. Our analysis shows that radical and incremental new products have differential effects on firm value, and firm reputation plays a significant role to the effects of new products. A firm with higher reputation benefits more when they introduce radical new products but suffer when they introduce incremental new products. The findings of this study provide important theoretical and managerial implications. First, while prior research primarily focused on new products in general, this study shows that the effect of new products on firm value is dependent on the types of new products. While radical new products improve firm value, incremental new products have little impact on firm value. Second, this study offers new insights regarding the role of firm reputation in introducing new products. Depending on the level of reputation, a firm needs to foucs on different types of new products. In particular, a firm with high reputation needs to introduce more radical new products rather than leverage its reputation with incremental new products. Third, while prior research has extensively examined firm characteristics such as firm size, capability, or experience as determinats of innovation outcomes, this study extends our focus to more social factors, such as firm reputation. That is, firm reputation resulting from its past activities can magnify or limit the outcomes resulting from its innovation activities in the future. Finally, these findings provide specific suggestions to enhance firm value through new products. This study offers to distinguish between radical and incremental new products and at the same time to look at the level of firm reputation. This study guides firms to align types of new products with their level of reputation.
사범대학 평가를 위한 서울지역 사립사범대학 체육교육과 전공교과과정 현황 분석
변호광 ( Hok Wang Byu ) 건국대학교 교육연구소 2003 교사와 교육(구 교육논집) Vol.27 No.-
This study is to develop effective curriculum which preservice physical education teachers should learn as major during four years training through the objective theory of physical education in college. Current curriculum in department of physical education is composed of theory and practice. A course of theory and practice field were ranked in order of ball games, gymnastic, physiology of exercise, and sports medicine et al. A umit of theory and practice field were ranked in order of ball games, gymnastic, physiology of exercise, and physical education et al. A time of theory and practice field were ranked in order of ball games, gymnastic, physiology of exercise, and physical education et al.
개에서 기절심근 및 관동맥 내피기능 회복에 미치는 관동맥내 Propofol의 영향
유경연,김별아,김학송 대한마취과학회 1998 Korean Journal of Anesthesiology Vol.35 No.5
Background : Oxygen-derived free radicals are known to contribute to tissue injury during myocardial ischemia and reperfusion. Recent in vitro studies have shown that propofol has potent antioxidant properties. The present study was aimed to investigate the effects of propofol on recovery of mechanical and coronary endothelial function in a myocardial stunning model. Methods : Thirty-five dogs were acutely instrumented under halothane anesthesia to measure aortic and left ventricular pressure, pulmonary and left anterior descending coronary artery (LAD) flow, and subendocardial segment length. After completion of the surgery, halothane was replaced by fentanyl- midazolam. Animals were then subjected to 15 min of LAD occlusion and 3 hrs of reperfusion under either intracoronary (i.c.) propofol (5 g/mL, n=11; 20 g/mL LAD flow, n=12) or vehicle (saline, n=12) for 1 hr beginning 30 min before LAD occlusion. Percent segment shortening (%SS) and the slope of the preload recruitable stroke work (Mw), as an index of regional myocardial contractility, and peak lengthening rate (dL/dtmax) and percent post-systolic shortening (%PSS), as an index of regional diastolic function, were evaluated. Coronary endothelial function was assessed by examining LAD flow response to i.c. acetylcholine (ACh, 1 g over I min) and i.c. sodium nitroprusside (SNP, 20 g over I min). The myocardial content of malondialdehyde (MDA) from LAD area was measured to evaluate lipid peroxidation. Results : Despite equally severe ischemic dysfunction during LAD occlusion, recovery of %SS was significantly improved during reperfusion by either dose of propofol compared to controls. However, Mw recovered to the baseline within 60 min of reperfusion in all three groups. In addition, propofol-treated dogs showed better recovery of both indices of regional diastolic function (dL/dtmax and %PSS) as compared to controls. Ischemia-reperfusion similarly attenuated the increases in the LAD flow by ACh in all the groups, whereas it had no significant effect on these increases in LAD flow by SNP. The increase in MDA induced by ischemia and reperfusion was significantly suppressed by either dose of propofol. Conclusions : The results indicate that propofol attenuates mechanical but not coronary endothelial dysfunction in postischemic, reperfused myocardium in an open-chest canine model. The protective action of propofol against mechanical dysfunction is probably due to its effect to reduce lipid peroxidation. (Korean J Anesthesiol 1998; 35: 812∼824)
여행사 종사원의 심리적자본과 조직몰입 간 관계에서 개인 창의성의 매개효과
나용근 ( Yong Geun Na ),변광인 ( Gwang In Byu ) 대한관광경영학회 2016 觀光硏究 Vol.31 No.2
본 연구는 심리적자본, 개인 창의성 및 조직몰입의 관계를 파악하고, 심리적자본과 조직몰입의 관계에서 개인 창의성의 매개효과를 검증하는 것이다. 국내 10개 여행사의 종사원들을 대상으로 설문지를 활용하여 조사하였으며, 319부를 회수하여 유효하지 않은 설문을 제외하고 289부를 중심으로 SPSS Win. Ver. 12.0 통계패키지를 이용하여 분석하였다. 연구의 결과 첫째, 심리적자본은 개인 창의성와 조직몰입에 긍정적 영향을 미치는 것으로 확인되었다. 둘째, 개인 창의성은 조직몰입에 유의한 영향을 미치는 것으로 확인되었다. 셋째, 개인 창의성의 매개효과를 확인한 결과, 개인 창의성은 심리적자본과 조직몰입 사이에서 부분매개하면서 유의한 영향을 미치는 것으로 분석되었다. 본 연구는 여행사 종사원들의 심리적자본의 하부 요인들과 개인 창의성 및 조직몰입에 대해 실증적 분석을 통하여 통계적 유의성을 제시하였다는 것에 의의가 있다. 이러한 각 변수들 간의 영향관계에 대한 실증적 분석은 향후 이와 관련된 연구의 기초자료로 활용될 수 있다는 이론적 시사점과 함께 조직 구성원의 심리적자본 강화 및 개인 창의성 발휘를 위해 여행사 조직 차원의 실무적 시사점을 얻었으며, 구체적인 사항은 본문에 제시하였다. This study examined the relationship among psychological capital, individual creativity, organizational commitment and verified the mediated effects of individual creativity in this relationship using the SPSS WIN 12.0 version of software package. For this study, the data was collected through off-line surveys of travel agency`s employees from 10 different travel agency. Among the 319 answers from voluntary participating employees, 289 answers were finally used for statistical analysis. The results were as follows. First, psychological capital had a positive influence on the individual creativity and organizational commitment. Second, Individual creativity had a positive influence on organizational commitment. Third, Individual creativity had a meaningful influence by partially mediating and Individual creativity but completely mediated psychological capital and organizational commitment. This study focused on psychological capital factors that have influences on showing personal creativity and has importance in the point that it has suggested the statistical significance by analyzing the psychological capital and individual creativity to reinforce this organizational commitment in a positive way. Positive analysis on the relationships among these variables suggests a theoretical meaning on providing a future direction for the study and practical meaning on providing ideas to reinforce the employees` psychological capital and personal creativity. The details of this study are followed in the main text.