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플립러닝 기반의 간호관리학 교육이 자기주도학습 준비도, 학업적 자기효능감, 학습몰입도, 학습실재감에 미치는 효과
유영선(Young Seun Ryu),김현진(Hyun Jin Kim) 학습자중심교과교육학회 2021 학습자중심교과교육연구 Vol.21 No.24
목적 플립러닝 기반 간호관리학 교육이 간호대학생의 자기주도학습 준비도, 학업적 자기효능감, 학습몰입도 및 학습실재감에 미치는 효과를 파악하여 향후 간호교육의 기초자료를 제공하기 위함이다. 방법 간호관리학 과목을 수강한 4학년 간호학생 중 연구의 목적을 이해하고 연구참여에 동의한 56명을 대상으로 플립러닝 기반 간호관리학 교육이 간호대학생의 자기주도학습 준비도, 학업적 자기효능감, 학습몰입도 및 학습실재감에 미치는 효과를 검증하기 위한 단일군 전후 설계의 유사 실험연구이다. 결과 자기주도적 학습능력은 (t=-1.79, p=.079)과 학업적 자기효능감은(t=-0.64, p=.520) 사전사후 통계적으로 유의한 차이가 없는 것으로 나타났으나 자기주도적 학습능력의 하위항목인 자기확신과, 자기효능감에 있어서는 자기조절 효능감은 유의한 차이가 있는 것으로 나타났다. 학습몰입도 (t=-4.91, p=<.001)와 학습실재감은 (t=-4.40, p=<.001) 사전사후 통계적으로 유의한 차이가 있는 것으로 나타났다. 결론 본 연구를 통해 플립러닝 기반 간호관리학 수업이 간호대학생의 학습몰입도와 학습실재감을 향상시키는데 효과적임이 확인되었다. 이에 플립러닝 기반 간호관리학 교수법은 현재의 코로나-19등의 상황으로 인한 비대면 수업 진행에 적절히 활용한다면 학습역량 강화를 위한 간호관리학 수업에 효과적으로 활용될 수 있을 것이다. Objectives The purpose of this study is to provide basic data for future nursing education by identifying the effects of flip learning-based nursing management education on self-directed learning readiness, academic self-efficacy, learning immersion, and learning presence Methods Flip-learning-based nursing management education for 56 students who understood the purpose of the study and agreed to participate in the nursing management course who completed the research participation agreement and reflection log. This is a similar experimental study of a single-group before-and-after design to verify the effects on, academic self-efficacy, learning immersion, and learning presence. Results Self-directed learning ability (t=-1.79, p=.079) and academic self-efficacy (t=-0.64, p=.520) showed no statistically significant difference before and after, but self-directed learning ability There was a significant difference in self-confidence and self-efficacy, which are sub-items of self-regulation. There was a statistically significant difference between learning immersion (t=-4.91, p=<.001) and learning presence (t=-4.40, p=<.001). Conclusions Through this study, it was confirmed that the flipped learning-based nursing management class was effective in improving the learning presence and learning immersion of nursing students. Therefore, if the flipped learning-based nursing management teaching method is appropriately used in the non-face-to-face class situation due to the current situation such as COVID-19, it can be effectively used in nursing management classes to strengthen learning capacity.
유능환 ( Ryu Neung Hwan ),( Alan Mcgown ),유영선 ( Ryu Young Sun ) 한국농공학회 1990 韓國農工學會誌 : 전원과 자원 Vol.32 No.2
This study was carried out to find the effects of freeze thaw behaviour on the thermal characteristics of soil layer, for the measurement of thermal conductivity, the styrofoam base and the base replased with gravely sand were constructed and their results were as follows ; 1. The frost heave was appeared to be top around the end of January, and the value in the case of base insulated with styrofoam was shown to be eight times larger than that of the base replased with gravely sand. 2. The frost penetration depth was peaked between the 20th and 30th of January, the depth in case of styrofoam base was about 80 cm and the gravely sand base, 140 cm, and the former was seemed to be more effective on the thermal conductivity than the latter. 3. The relationship between frost heave and frost penetration depth was expressed as y=e 0.571x-4.087, and that we can easily estimate the frost penetration depth on the ground of the equation through the simple measurement of the frost heave. 4. It was appeared that construction cost was decreased by 40% in the case of base insulated with styrofoam compared to the base replased with gravely sand on the same frost resistance capacity. The economic construction range was seemed to be more than 100 meters.
동결토(凍結土)의 압축강도(壓縮强度)에 관한 실험적(實驗的) 연구(硏究)
유능환 ( Ryu Neung Hwang ),최중돈 ( Choi Joong Dae ),유영선 ( Ryu Young Sun ),조영택 ( Jo Young Tack ) 한국농공학회 1993 韓國農工學會誌 : 전원과 자원 Vol.35 No.4
Upon freezing a soil swells due to phase change and its compression stress increase a lot. As the soil undergo thawing, however, it becomes a soft soil layer because the soil changes from a solid state to a plastic state. These changes are largely dependent of freezing temperature and repeated freezing-thawing cycle as well as the density of the soil and applied lading condition. This study was initiated to describe the effect of the freezing temperature and repeated freezing-thawaing cycle on the unconfined compressive strength. Soil samples were collected at about 20 sites where soil structures were installed in Kangwon Provincial area and necessary laboratory tests were conducted. The results could be used to help manage effectively the field structures and can be used as a basic data for designing and constructing new projects in the future. The results were as follows : 1. Unconfined compressive strength decreased as the number of freezing and thawing cycle went up. But the strength increased as compression speed, water content and tempera-ture decreased. The largest effect on the strength was observed at the first freezing and thawing cycle. 2. Compression strain went up with the increase of deformation speed, and was largely influenced by the number of the freezing-thawing cycle. 3. Scant modulus was responded sensitively to material of the loading plates, increased with decrease of temperature down to -10℃, but was nearly constant below the temperature. Thixotropic ratio Characteristic became large as compression strain got smaller and was significantly larger in the controlled soil than in the soil treated with freezing and thawing processes 4. Vertical compression strength of ice crystal(development direction) was 3 to 4 times larger than that of perpendicular to the crystal. The vertical compression strength was agreed well with Clausius-Clapeyrons equation when temperature were between 0 to 5℃, but the strength below -5℃ were different from the equation and showed a strong dependency on temperature and deformation speed. When the skew was less then 20 degress, the vertical compression strength was gradually decreased but when the skew was higher than that, the strength became nearly constant. Almost all samples showed ductile failure. As considered above, strength reduction of the soil due to cyclic freezing-thawing prosses must be considered when trenching and cutting the soil to construct soil structures if the soil is likely subject to the processes. Expecially, if a soil no freezing-thawing history, cares for the strength reduction must be given before any design or construction works begin. It is suggested that special design and construction technique for the strength reduction be developed.
동결(凍結) 및 동결(凍結)-융해작용(融解作用)을 받는 점성토(粘性土)의 강도(强度)와 그의 변형거동(變形擧動)
유능환 ( Ryu Neung Hwan ),유영선 ( Ryu Young Son ),유연택 ( Ryu Yeon Taek ) 한국농공학회 1991 韓國農工學會誌 : 전원과 자원 Vol.33 No.2
Some experiments were carried out to investigate the effects of freezing and thawing on the strength and strain characteristics of alluvial silty clay under the different temperatures, loading and moisture conditions. The results were as follows; 1. The soil used was proved to be consisted of silty clay with honey-combed structure, and showed higher dilatancy, frost activity and lower stability in natural state. 2. Soil treated with freezing and thawing cycles showed lower compressive strength compared with the non treated, The strength decreased with incement of freezing and thawing cycles. It's shapes of stress-strain curves were flat and did not formulate a peak while the peak strength of higher moisture content soil decreased with the increment of moisture content. It's decrement ratio was most distinctly shown at the first one cycle of freezing and thawing. 3. The cohesion decreased due to freezing and thawing cycles but internal frcition angle was not changed. 4. The liquid limit decreased with increment of freezing and thawing cycles, and became almost constant after three cycles of freezing and thawing. 5. The strength under simple loading at failure mode was appeared to be higher compared with the cyclic loading after freezing and thawing but initial moisture content effect was not observed. 6. Ice lense was not observed within 50% of ice content ratio but observed over 100%. The higher the ice content ratio, the higher the peak strength. As a matter of fact, it seems that an optimum ice content ratio exists for plastic mode and the least compressive strength.
동결(凍結)-융해작용(融解作用)이 흙의 강도특성(强度特性)에 미치는 영향(影響) (IV) - 단열재(斷熱材)를 삽입(揷入)한 동결성토(凍結盛土)의 단열거동(斷熱擧動) -
유능환 ( Ryu Neung Hwan ),박승범 ( Park Seung Bum ),유영선 ( Ryu Young Sun ) 한국농공학회 1990 韓國農工學會誌 : 전원과 자원 Vol.32 No.3
This paper was analized the thermal conductivity of polystylene (TENSAR- GEOGRID) embeding into the subbase through frost penetration depth, frost heave, change of bearing capacity, and soil moisture movement due to freezing, thawing and icing actions, and their results were as follows : 1. The change of temperature into the sub-base was much increased by the Tensar-Geogrid insertion, and the frost penetration and frost heave were decreased as the thinner of the insulation thickness but the thawing velocity of melting period was appeared to be faster in case of non-insulated. 2. The frost heave had a close relationship with the thickness of insulations which was reasonably included anti-frost effects. 3. The moisture content during the freezing period of upper layer of the insulation insertion was increased by 15 per cent but it was returned to initial state of the thawing period, and at the down layer temporarily increased by 10 per cent and returned to the original state at once. 4. The insulation was acted as a function of distribution of surcharge, and the settlement of the sub-base was about 1.5 mm under 15 tonnage of load and which was included within the allowable limits. 5. The sliding resistance due to the icing which was induced by the insulation insertion into the sub-base was appeared as more 40 per cent than noninsulation area, so that the insulations should be restricted on the place such as mountains, curved and cross area which were required the braking power under the traffics.