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교사가 지각한 학교장의 수업지도성이 학교조직문화 및 학교조직효과성에 미치는 영향
곽상기 한국교원교육학회 2004 한국교원교육연구 Vol.21 No.1
이 연구는 학교조직문화와 학교조직효과성의 향상을 추구하기 위하여 교사가 지각한 학교장의 수업지도성과 학교조직문화 및 학교조직효과성은 어떠한 관계가 있는지를 구명하는데 그 목적이 있다.이를 위해 경인지역의 초등학교 교사들을 대상으로 교사가 지각한 학교장의 수업지도성과 학교조직문화 및 학교조직효과성 변인간의 상관관계를 분석하였고, 교사가 지각한 학교장의 수업지도성이 학교조직문화 및 학교조직효과성 변인에 미치는 영향을 분석하였다.그 결과, 교사가 지각한 학교장의 수업지도성과 학교조직문화 그리고 학교조직효과성 변인간에는 다소 높은 정적인 상관관계로 나타났다. 또한 학교장의 수업지도성은 학교조직문화에 영향을 미치고 있었으며, 그 하위변인인 수업평가활동, 수업지원활동, 학교비전제시, 수업개선활동의 순으로 종속변인인 학교조직문화를 설명하는데 기여하고 있는 것으로 나타났다. 마지막으로 학교장의 수업지도성은 학교조직효과성에 영향을 미치고 있었으며, 그 하위변인인 수업지원활동, 수업평가활동, 수업개선활동, 학교비전제시의 순으로 종속변인인 학교조직효과성을 설명하는데 기여하고 있는 것으로 나타났다.이 연구결과로 학교장의 수업지도성은 학교조직문화에 영향을 미치고 있는데, 학교장의 수업지도성 하위변인인 수업평가활동과 수업지원활동을 통해 학교조직문화를 적절히 관리하고 형성할 수 있을 것이다. 또한 학교장의 수업지도성은 학교조직효과성에 영향을 미치고 있는데, 학교장은 수업지도성 하위변인인 수업지원활동과 수업평가활동 발휘를 통해 학교조직효과성을 향상시킬 수 있을 것이다.
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폐성 고혈압환자에서 Amrinone 과 Dobutamine 이 전신 및 폐순환에 미치는 영향
민상기,김민석,유은숙,방서욱,홍용우,남상범,곽영란,김명옥 대한마취과학회 1997 Korean Journal of Anesthesiology Vol.33 No.5
Background : Dobutamine and amrinone, phosphodiesterase-III inhibitor, are known to have both inotropic and vasodilatory properties. We evaluated the effects of both drugs on systemic and pulmonary hemodynamics in patients with pulmonary hypertension(PH). Methods : With Institutional Review Board approval, 45 patients whose mean pulmonary arterial pressure was greater than 30 mmHg were studied. After sternotomy under the steady state of anesthesia and controlled ventilation(30 mmHg<PaCO2<40 mmHg), patients recieved one of following drugs for 30minutes(min); dobutamine 5.0ug/kg/min(Group I), low dose amrinone(loading dose 1.0 mg/kg, followed by infusion 7.5 g/kg/min, Group II) or high dose amrinone (loading dose 2.0 mg/kg, followed by infusion 10 g/kg/min, Group III). Hemodynamic variables were measured at 10 min and 30 min after start of infusion. Results : Dobutamine didn't decrease pulmonary arterial pressure(PAP) and cause no hemodynamic change while low and high dose amrinone reduced PAP and especcial decrease of PAP in low dose amrinone group was statistically significnat. High dose amrinone increased cardiac index(CI) and decreased both systemic vascular resistance index(SVRI) and central venous pressure(CVP) more significantly than control value. Conclusions : In patients with chronic right ventricular failure associated with PH, amrinone may decrease the PAP and improve cardiac performance more effectively than dobutamin does. Increment of dosage of amrinone may not result in significant reduction of PAP. (Korean J Anesthesiol 1997; 33: 928∼936)
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민상기,임현경,유은숙,김명옥,홍용우,남상범,곽영란,방서욱,이기문 대한마취과학회 1999 Korean Journal of Anesthesiology Vol.33 No.5
Background: Several studies of simultaneous pulmonary capillary wedge pressure (PCWP) and direct left atrial pressure (LAP) in cardiac surgical patients have shown good correlation between these measurements. However, discrepancy between PCWP and LAP have been reported after cardiopulmonary bypass (CPB). This study examined the relationship between PCWP and LAP after CPB in surgical patients undergoing mitral valve replacement and undergoing myocardial revascularization. Methods: Thirty-three patients undergoing myocardial revascularization (group 1) and fifty-two patients undergoing mitral valve replacement (group 2) were examined. Group 2 was divided into two subgroups by preoperative pulmonary hypertension (mean pulmonary artery pressure more than 30mmHg), without pulmonary hypertension (group 2a) and with pulmonary hypertension (group 2b). Simultaneous measurements of pulmonary artery diastolic pressure (PADP), PCWP and LAP were obtained after cardiopulmonary bypass and after sternal closure. Results: The correlation between PCWP and LAP showed statistically significant in all groups. Good correlation was seen in group I (r=0.72, p$lt;0.01) and in group 2a (r=0.65, p$lt;0.01). However, the correlation was not good in group 2b (r=0.53, p$lt;0.01). There was no significant difference between PCWP and LAP in group I and 2a. However, discrepancy between PCWP and LAP was showed in group 2b. There was statistical difference between PADP and LAP in all groups. The correlation coefficient between PADP and LAP was significant in all groups but the correlation was not good. Conclusions: The PCWP was shown to be a reliable index of LAP in patients without pulmonary hypertension following CPB. However, the PCWP measurement was not accurate in assessing LAP in patients who had pulmonary hypertension. Therefore, use of LAP may lead to accurate ventricular function curve and treatment. (Korean J Anesthesiol 1997; 33: 833∼838)
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동물 복지 융합형 디지털 콘텐츠 제작을 위한 야외효력시험에서 이유 자돈의 혈중 Cortisol 분석
최인학,박철,곽상기,정태호,Choi, In-Hag,Park, Chul,Kwak, Sang-Kee,Chung, Tae-Ho 한국환경과학회 2020 한국환경과학회지 Vol.29 No.5
The plasma cortisol of nurserypigs was examined using an outdoor efficacy testwith a digital content-based approach in animal welfare convergence types. Nine nurserypigs,without discriminating between female and male, were classified into 2 groups of 3 pigs each: control and group 1 (effect+nature), control and group 2(effect+nature+music). The control group was the same for group 1 and 2 to compare the effects using a t-test. There was no significant difference in plasma cortisol levels between the control group and group 1 until 4 h after stress induction. However, significant differences were subsequently found between the control group and group 1 from 8 h to 72 h (p<0.05). Further, plasma cortisol was not affected in group 2 at 0 h through 8 h and 72 h. At 12 h through 48 h, group 2 showed a reduction in plasma cortisol level compared to the control group(p<0.05). These results indicated that after stress induction, applying effect plus nature or effect plus nature plus music can effectively decrease plasma cortisol levels in nursery pigs within8 h through 72 h and may serve as a better model for digital content-based approach in animal welfare convergence types.
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남경섭,배종모,김창준,곽명아,곽상기,장인성 한국기계기술학회 2015 한국기계기술학회 학술대회논문집 Vol.2015 No.03
The performance of cascade cycle air-source heat pump has been investigated experimentally. The cascade heat pump cycle consists of high temperature of R134a and low temperature of R410a. We have complementary primary air source heat pump. As a result, we produce the products with the best performance. The rated capacity of heat pump is 25kW and the cold capacity of heat pump is 25kW. The KSCOP_C of colder condition is 2.61 and KSCOP_A of average condition is 2.74 and KSCOP_W of warmer is 2.74.
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이수정,황지현,박흥식,민상기,곽해수 한국축산식품학회 2005 심포지움 및 학술발표회 Vol.- No.35
본 연구는 개발한 batch type 동결농축장치를 이용하여 제조한 동결농축유의 일반성분 분석 및 이화학적 특성을 분석하고, 진공농축유와 비교하여 동결농축유의 우수성을 입증하기위하여 실시되었다. 동결농축유와 진공농축유는 농축방법에 따라 차이가 나타났으며, 전기영동 실험결과 진공농축유에 비하여 동결농축유의 band가 뚜렷하게 나타나 열처리한 진공농축유가 열변성이 된 것을 확인할 수 있었다. 열처리시에는 Maillard반응이 일어나거나 유효성 lysine함량이 감소되며, 유청내 용해성 칼슘이 인산이나 변성된 단백질과 결합하여 한외여과성칼슘(calcium ions in milk ultrafiltrates)함량이 감소되며, 비타민 손실, 유당의 이성체화, 휘발성 황화합물 생성에 의해 가열취가 발생될 수 있다. 따라서 전기영동 실험결과 batch type 동결농축장치를 이용하여 제조한 동결농축유의 우수성을 확인할 수 있었다.
KCI
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