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정예지(Ye Jee Jeong),이수정(Soo Jung Lee),김문주(Moon Joo Kim) 한국경영학회 2012 經營學硏究 Vol.41 No.3
In recent years, we are facing with a serious problem of the market-capitalist system caused by immorality and unethical practice of leaders who have led capitalism. This research analyzes the effectiveness of authentic leadership which has emerged recently as one of the most interesting fields in leadership studies. It selects South Korea as the empirical case study. Researchers on authentic leadership have pointed out the limitation of traditional leadership theories which only concentrating on the skill and style of leaders. They also insist that authentic leaders can make a greater contribution to both long-term and short-term performance than any other types of leaders. In this research, we define authentic leadership as ``a very basic, genuine element and a root construct of positive leadership.`` Authentic leaders are sincere to themselves and exhibit behavior positively and transform or develop associates into leaders themselves. An authentic leader mainly shows two kinds of character which are self-awareness and self-regulation. Selfawareness is the starting point of authentic leadership and it means that leaders know mission, visions, identity, emotions, motives, and values of leader themselves and their organizations. And authentic leaders also need to be fully aware of themselves. Self-regulation is a kind of self-control mechanism where authentic leaders try to reduce discrepancies between the actual-self and ideal-self. Self-regulation of authentic leadership helps the leader to endure the external influence and pressure. To verify the effect of authentic leadership, authors compare the effects of transformational leadership on team effectiveness. Although the primary purpose of this study is to test persuasiveness of the authentic leadership theory, we also try to analyze the effect of transformational leadership at the same time as it is well known for its universality in leadership studies. The results show that both leaderships have a positive effect on change-related performance(team performance and teaminnovativeness) and order-related performance (organizational commitment) and have a negative effect on perceived organizational politics. However, if the authentic leadership is controlled, the effect of transformational leadership on order-related performance(organizational commitment and perceived organizational politics) disappears. The effects of authentic leadership on team performance, whereas, team innovativeness, organizational commitment, and perceived organizational politics are all still significant. In conclusion, authors found the possibilities of authentic leadership in Korean firms and argue that various type of leaderships without authenticity could be just skills, gesture, and style of leaders. Even though transformational leadership has a strong effect on changerelated performance, we suggest that it is necessary to distinguish ``pseudo`` transformational leadership from ``authentic`` transformational leadership and their effect on team effectiveness. We also discussed the managerial implications of our claims.
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적외선등을 이용한 실외 실험적 온난화 처리가 소나무 묘목의 생장과 생리적 특성에 미치는 영향
이선정 ( Sun Jeoung Lee ),한새롬 ( Sae Rom Han ),윤태경 ( Tae Kyung Yoon ),한승현 ( Seung Hyun Han ),정예지 ( Ye Jee Jung ),윤순진 ( Soon Jin Yun ),손요환 ( Yo Whan Son ) 한국산림과학회 2013 한국산림과학회지 Vol.102 No.4
Climate change will affect the physiological traits and growth of forest trees. This study was conducted to investigate the effects of an experimental warming on growth and physiological characteristics of Pinus densiflora S. et Z. seedlings. One-year-old P. densiflora seedlings were planted in control and warmed plots in April 2010. The air temperature of warmed plots was increased by 3oC using infrared lamps from November 2010. We measured shoot height, root collar diameter, above and below ground biomass, chlorophyll contents and leaf nitrogen concentration from March 2011 to March 2013. Seedling height and root collar diameter showed no significant difference between warmed and control plots except for root collar diameter measured in June 2012. Seedling leaf biomass was lower in the warmed (23.94±2.10 g) than in the control (26.08±1.72 g) plots in 2013. Shoot to root ratio (S/R ratio) was lower in the warmed (1.09±0.07) than in the control (1.31±0.10) plots in 2013. Leaf nitrogen concentrations and chlorophyll contents were not significantly different between warmed and control plots except for leaf nitrogen concentration in 2011. Leaf C/N ratio was increased in 2012 under the warming treatment. Low growth and S/R ratio in warmed plots might be related to the higher temperature and water stress. In the future, the below-ground carbon allocation of P. densiflora might be increased by global warming due to temperature and water stress.
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기후변화 영향 모의를 위한 실외 실험적 온난화 및 강수 조절 시스템 설계 연구
윤순진 ( Soon Jin Yun ),한새롬 ( Sae Rom Han ),한승현 ( Seung Hyun Han ),이선정 ( Sun Jeoung Lee ),정예지 ( Ye Jee Jung ),김성준 ( Seoung Jun Kim ),손요환 ( Yow Han Son ) 한국임학회 2014 한국산림과학회지 Vol.103 No.2
소나무 묘목을 대상으로 한반도 기후변화 시나리오에 근거한 50년 후 온도 3℃ 증가와 강수량 30% 변화의 영향을 모의하고자 실외에서 온난화 처리와 강수 조절을 수행할 수 있는 시스템을 설계하였다. 이를 위하여 2013년 4월에 묘포장을 조성하고 2년생 소나무 묘목을 식재한 다음 5월부터 적외선등을 이용하여 온난화 처리구(W)의 대기온도를 대조구(C)에 비하여 3.0℃ 높게 설정하여 가열하였으며, 강수 대조구(P0)와 강수 차단 덮개를 이용한 강수 감소(대조구 대비 -30%; P-) 조절, 그리고 펌프와 점적관수를 통한 강수 증가(대조구 대비 +30%; P+) 조절을 실행하였다. 온난화 처리구의 대기 온도는 초기에 대조구에 비하여 평균 2.2℃ 높았으나 이후 점차 목표치에 근접한 3.0℃로유지되었다. 또한 온난화 처리에 따른 평균 토양 온도는 온난화 처리구에서 대조구보다 평균 3.1℃ 높게 나타났다. 강수 증가 및 감소 조절에 따른 평균 토양 수분 함량은 온난화 처리구에서 P0W에 비하여 P+W는 13.9% 증가하고, P-W는 10.0% 감소하였으며, 온난화 대조구 중에서 P+C는 23.7% 증가하고, P-C는 7.6% 감소하였다. 환경요인의 모니터링을 통하여 실외 실험적 온난화와 강수 조절 시스템이 적정하게 설계되고 가동됨을 확인할 수 있었다. The objective of this study was to establish an open-field experimental warming treatment and precipitation manipulation system to simulate climate change impact for Pinus densiflora seedlings based on a climate change scenario in Korea. Two-year-old seedlings were planted in a nursery in April, 2013. The air temperature of warmed plots (W) was set to increase by 3.0℃ compared to control plots (C) using infrared lamps from May, 2013. The three precipitation manipulation consisted of precipitation decrease using transparent panel (-30%; P-), precipitation increase using pump and drip-irrigation (+30%; P+) and precipitation control (0%; P0). Initially, the air temperature was 2.2℃ higher in warmed plots than in control plots and later air temperature was maintained close to the target temperature of 3.0℃. The average soil temperature was 3.1℃ higher in warmed plots than in control plots. Also the average soil moisture content after the precipitation manipulation increased by 13.9% in P+W and decreased by 10.0% in P-W compared to P0W, and increased by 23.7% in P+C and decreased by 7.6% in P-C compared to P0C. It was confirmed that the open-field experimental warming and precipitation manipulation system was properly designed and operating.
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