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정보통신기술산업 CEO의 변혁적 리더십과 구성원의 혁신 및 조직시민행동의 관계: CSR 조절효과
황규하,박현숙,Hwang, Kyu Ha,Park, Hyeon Suk 서비스사이언스학회 2016 서비스연구 Vol.6 No.2
본 연구는 국내 정보통신기술산업의 조직구성원들이 지각한 CEO의 변혁적 리더십과 구성원들의 자기효능감과 혁신행동, 조직시민행동 그리고 사회책임경영 수준과 조직변화수용도와의 관계를 조사하고자 실증 분석을 수행하였다. 이를 위해 ICT기업에 재직하고 있는 구성원들을 대상으로 온라인 설문조사를 통해 417부를 회수하였고, SPSS와 AMOS를 활용하여 분석한 결과는 다음과 같다. CEO의 변혁적 리더십은 자기효능감에 유의한 정(+)의 영향을 미치고, 자기효능감은 구성원의 혁신행동과 조직시민행동에 유의한 정(+)의 영향을 미칠 뿐 아니라 CEO의 변혁적 리더십과 구성원의 혁신행동과 조직 시민행동에 대해 매개역할을 하는 것을 확인하였다. 또한 사회책임경영은 변혁적 리더십과 자기효능감간의 관계에 조절효과가 있는 것으로 확인되었다. This empirical study attempted to investigate the effects of the CEO's transformational leadership on the organizational members' innovative behavior/organizational citizenship behavior, CSR and employees' acceptance of organizational change in the ICT industry. For this study, we conducted an online survey with the employees of businesses that belonged to the ICT industries and received 417 valid responses. The analysis results by SPSS & AMOS are as follows. CEO's transformational leadership had a significantly positive impact on the members' self-efficacy. The members' self-efficacy not only had a positive impact on their own innovative behavior/organizational citizenship behavior, but also had a mediating effects in the relationship between CEO's transformational leadership and the members's innovative behavior/organizational citizenship behavior. Also corporate social responsibility management had a moderating roles in the relationship between CEO's transformational leadership and the members' self-efficacy.
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A planetary lensing feature in caustic-crossing high-magnification microlensing events
정선주,황규하,류윤현,이충욱,Chung, Sun-Ju,Hwang, Kyu-Ha,Ryu, Yoon-Hyun,Lee, Chung-Uk 한국천문학회 2012 天文學會報 Vol.37 No.2
Current microlensing follow-up observations focus on high-magnification events because of the high efficiency of planet detection. However, central perturbations of high-magnification events caused by a planet can also be produced by a very close or a very wide binary companion, and the two kinds of central perturbations are not generally distinguished without time consuming detailed modeling (a planet-binary degeneracy). Hence, it is important to resolve the planet-binary degeneracy that occurs in high-magnification events. In this paper, we investigate caustic-crossing high-magnification events caused by a planet and a wide binary companion. From this study, we find that because of the different magnification excess patterns inside the central caustics induced by the planet and the binary companion, the light curves of the caustic-crossing planetary-lensing events exhibit a feature that is discriminated from those of the caustic-crossing binary-lensing events, and the feature can be used to immediately distinguish between the planetary and binary companions.
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김영욱,박호용,이영하,최규석,전수한,윤영국,황규하 대한혈관외과학회 1999 Vascular Specialist International Vol.15 No.2
Purpose: Acute limb ischemia is not only a limb-threatening but also a life-threatening condition. Despite the use of surgical and/or thrombolytic therapy for this urgent treatment-requiring condition, it is still reported to carry high morbidity and mortality rates. Methods: We analyzed the treatment outcomes of 118 limbs (11 upper limbs, 107 lower limb) with acute limb ischemia treated for 103 patients (age, median: 64, male 89 female 14) at the Department of Surgery, Kyungpook National University Hospital, from March 1993 to March 1999. The underlymg causes of acute limb ischemia included 62 limbs with acute arterial embolism in 51 patients, 39 limbs with acute arterial thrombosis in 37 patients, 15 limbs with graft occlusion in 14 patients, and 2 limbs of undetermined cause of limb ischemia in 1 patient. The retrospective, nonrandomized study was done. Results: The underlying causes of acute limb ischemia were arterial embolism in 52.5%, arterial thmmbosis in 33.1%, bypass graft occlusion 12.7%, and undetermined cause in 1.7%. Severity of ischemia according to the SVS/ISCVS classification, 107 limbs (90.7%) were classified as category II and 9 limbs (7.6%) were in category III. For the limbs with embolisms, 47 embolectomies (including 6 cases treated with adjuvant thrombolytic therapy) and 10 arterial bypasses were performed. For the limbs with thromboses, 23 arterial bypasses, 5 thrombectomies, and 4 catheter directed thrombolytic therapies were performed. For the patients with acute graft occusion, 8 redo bypasses, 4 thrombolytic therapies, and 2 thrombectomies were performed. We experienced major limb amputations in 8.1%, hospital mortality in 13.7% and recurrence of ischemic symptoms in 16.1% during the follow-up period in the embolism patients and limb amputations in 2.7%, hospital mortality in 14.3%, and recurrence of ischemic symptoms in 8.3% of the thrombosis patients. Of the patients with category II ischemia, major limb amputation and hospital mortality rates were 4.7% and 9.2%, respectively. Conclusion: In dealing with acute limb ischemia, prompt and appropriate selection of treatment modalities, if needed in combined modes, is critically important in improving the treatment outcomes.
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