• 디지털융복합연구
• /
• 제19권12호
• /
• pp.487-494
• /
• 2021

본 연구는 중학교 축구지도자의 리더십 유형과 운동 몰입 및 팀 분위기의 관계 알아보는 데 그 목적이 있으며 다음과 같은 결과가 나왔다. 첫째, 인구통계학적 특성에 따라 분석한 결과 연령에서는 팀 분위기의 동료 관계 특성에서, 지도자와의 생활기간에 따른 변인으로는 상호적 리더십이 유의한 차이가 있는 것으로 나타났다. 둘째, 중학교 축구지도자의 리더십 유형과 운동 몰입의 관계를 알아본 결과 리더십 유형 중 서번트 리더십은 운동 몰입의 모든 하위요인에, 변혁적 리더십은 행동몰입에 영향을 미치는 것으로 나타났다. 셋째. 중학교 축구지도자의 리더십 유형과 팀 분위기의 관계를 알아본 결과 팀 분위기의 하위요인인 역할특성에는 모든 리더십 유형이, 동료 관계 특성에는 서번트 리더십이, 팀 특성에는 상호적 리더십이 영향을 미치는 것으로 나타났다.

• 공학교육연구
• /
• 제19권1호
• /
• pp.11-20
• /
• 2016

Team activities in engineering curriculum play the major role in nourishing students with problem-solving and team-working capabilities. Educators endeavor to guide students to achieve success experiences through team activities. The sense of success depends on how the students think and feel about team activities. In this study, we investigated the students thoughts on team activity in various aspects. We provided freshmen and juniors with a set of questionnaire and gathered answers, from which we tried to elicit implication that we may apply for coaching their team activities. The analysis result shows that the perception level of freshmen on team activities is less mature in a sense that the freshmen's view is more neutral than that of juniors. Regardless of the grade, they show that they put more emphasis on the team atmosphere than on the team performance. Especially the freshmen are more sensitive to the relationship between the team members than the juniors. The juniors concern more about whether they prepare well enough for the team activities or not. Both of the grades prefer self-regulation in team formation and think the leadership is essential in performing team activities. However, they both hesitate to take a role as a leader. We expect the research result will provide novel ideas for coaching students to obtain valuable experiences on team activities.

• 디지털융복합연구
• /
• 제19권11호
• /
• pp.555-564
• /
• 2021

이 연구는 전문 스포츠 육상지도자의 전문성과 팀 분위기 및 운동만족 간의 관계를 구명하는데 목적이 있다. 이러한 연구목적을 달성하기 위해 2021년 대한육상연맹에 등록되어 있는 중학생부터 대학생까지 학생선수 221명을 연구대상으로 선정하였으며, 펜데믹 상황을 고려하여 Google 온라인 설문지를 활용하여 자료를 수집하였다. 자료처리는 통계 프로그램 SPSS 22.0을 사용하여 빈도분석, 탐색적 요인분석, 신뢰도 분석, 그리고 상관관계분석과 다중회귀분석을 실시하여 다음과 같은 결론을 도출하였다. 첫째, 육상지도자의 전문성은 팀 분위기에 정적(+)인 영향을 미치는 것으로 나타났다. 둘째, 육상지도자 전문성의 하위요인 중 선수관리만 운동만족의 하위요인인 일상생활만족에 부적(-)인 영향을 미치는 것으로 나타났다. 셋째, 육상 선수 팀 분위기의 하위요인 중 역할특성과 리더특성만 운동만족의 하위요인인 사회승인만족에 정적(+)인 영향을 미치는 것으로 나타났다.

• 한국세라믹학회지
• /
• 제52권6호
• /
• pp.435-440
• /
• 2015

It is a challenge from an industrial point of view to fabricate silicon nitride substrates with high thermal conductivity and good mechanical properties for power devices from high-purity Si scrap powder by means of thick film processes such as tape casting. We characterize the residual carbon and oxygen content after the binder burnout followed by nitridation as a function of the temperature in the temperature range of $300^{\circ}C-700^{\circ}C$ and the atmosphere in a green tape sample which consists of high-purity Si powder and polymer binders such as polyvinyl butyral and dioctyl phthalate. The optimum condition of binder burnout is suggested in terms of the binder removal temperature and atmosphere. If considering nitridation, the burnout of the organic binder in air compared to that in a nitrogen atmosphere could offer an advantage when fabricating reaction-bonded $Si_3N_4$ substrates for power devices to enable low carbon and oxygen contents in green tape samples.

• 한국재료학회:학술대회논문집
• /
• 한국재료학회 1998년도 IUMRS-ICEM ABSTRACT BOOK
• /
• pp.117.3-117
• /
• 1998

• 한국산림과학회지
• /
• 제103권2호
• /
• pp.270-277
• /
• 2014

본 연구는 숲해설가의 직무만족 향상과 효율적인 조직운영을 위한 기초자료제공을 목적으로 숲해설가의 직무만족도와 관련변인에 따른 직무만족도 차이를 분석하였다. 첫째, 전체직무만족도는 평균 3.41점(5점 만점)으로 직무자체에 대한 만족도는 중위수보다 높은 것으로 나타났으나 복리후생에 관한 만족도는 상대적으로 낮은 것으로 조사되었다. 둘째, 직무만족도 요인분석결과 조직분위기, 보상수준, 직무갈등, 근무여건 네 개의 요인으로 분류되었고 조직분위기와 근무여건 요인에 대한 만족도는 높고 보상수준의 만족도는 낮은 것으로 나타났다. 셋째, 전체직무만족도는 소속기관, 활동현장, 근무경력에 따라 차이가 있는 것으로 나타났고, 직무만족도 하위요인의 경우 조직분위기는 근무경력과 소속기관에 따라 차이가 있었고 보상수준은 소속기관, 근무여건은 소속기관과 활동현장에 따라 유의한 차이가 있었다.

• Proceedings of the National Institute of Ecology of the Republic of Korea
• /
• 제1권1호
• /
• pp.58-67
• /
• 2020

Terrestrial ecosystems influence climate change via their climate regulation function, which is manifested within the carbon, water, and energy circulation between the atmosphere and surface. However, it has been challenging to quantify the climate regulation of terrestrial ecosystems and identify its regional distribution, which provides useful information for establishing regional climate-mitigation plans as well as facilitates better understanding of the interactions between the climate and land processes. In this study, a land surface model (LSM) that represents the land-atmosphere interactions and plant phenological variations was introduced to assess the contributions of terrestrial ecosystems to atmospheric warming or cooling effects over East Asia over the last half century. Three main climate-regulating components were simulated: net radiation flux, carbon exchange, and moisture flux at the surface. Then, the contribution of each component to the atmospheric warming or cooling (negative or positive feedback to the atmosphere, respectively) was investigated. The results showed that the terrestrial ecosystem over the Siberian region has shown a relatively large increase in positive feedback due to the enhancement of biogeochemical processes, indicating an offset effect to delay global warming. Meanwhile, the Gobi Desert shows different regional variations: increase in positive feedback in its southern part but increase in negative one in its eastern part, which implies the eastward movements of desert areas. As such, even though the LSM has limitations, this model approach to quantify the climate regulation is useful to extract the relevant characteristics in its spatio-temporal variations.

• 도시과학
• /
• 제9권1호
• /
• pp.91-108
• /
• 2020

The purpose of this study is to study how Peter Zumthor construct an atmosphere throughout the process of his architecture. Peter Zumthor revels the atmosphere through his architecture works in architectural language. The beholders recognize the architectural ambience of Peter Zumthor through their various physical senses and reaction. Peter Zumthor placed a delicate attention on how to build and use of the material in order to encourage them to recognize the intended atmosphere, causing the atmosphere to the particular beholders.

• 한국재료학회지
• /
• 제12권12호
• /
• pp.941-946
• /
• 2002

Both Cu and Cu-oxide nanopowders have great potential as conductive paste, solid lubricant, effective catalysts and super conducting materials because of their unique properties compared with those of commercial micro-sized ones. In this study, Cu and Cu-oxide nanopowders were prepared by Pulsed Wire Evaporation (PWE) method which has been very useful for producing nanometer-sized metal, alloy and ceramic powders. In this process, the metal wire is explosively converted into ultrafine particles under high electric pulse current (between $10^4$ and $10^{ 6}$ $A/mm^2$) within a micro second time. To prevent full oxidations of Cu powder, the surface of powder has been slightly passivated with thin CuO layer. X-ray diffraction analysis has shown that pure Cu nanopowders were obtained at $N_2$ atmosphere. As the oxygen partial pressure increased in $N_2$ atmosphere, the gradual phase transformation occurred from Cu to $Cu_2$O and finally CuO nanopowders. The spherical Cu nanopowders had a uniform size distribution of about 100nm in diameter. The Cu-oxide nanopowders were less than 70nm with sphere-like shape and their mean particle size was 54nm. Smaller size of Cu-oxide nanopowders compared with that of the Cu nanopowders results from the secondary explosion of Cu nanopowders at oxygen atmosphere. Thin passivated oxygen layer on the Cu surface has been proved by XPS and HRPD.

• Fisheries and Aquatic Sciences
• /
• 제8권3호
• /
• pp.167-176
• /
• 2005

Atmospheric deposition and riverine waters were sampled throughout a year, to estimate the loading fluxes of polycyclic aromatic hydrocarbons (PAHs) into the Masan Bay and its vicinity, Korea. Atmospheric deposition fluxes of total PAHs in the surveyed area varied from 62.2 to 464 ${\mu}g/m^2/year$. Concentration of total PAHs in water samples from six rivers ranged from 34.6 to 239 ng/L. Contribution of the carcinogenic PAHs to the total PAHs occupied $38\%$ and $50\%$ for atmospheric deposition and river waters, respectively. Atmospheric deposition fluxes and water concentrations of PAHs were slightly low or moderate to those in locations from some countries. Correspondence analysis was used to investigate the loading characteristics of PAHs according to transport routes. Atmospheric deposition samples were corresponded to higher molecular aromatics of PAHs, while riverine water samples were associated with lower molecular weight of PAHs. The results indicate that the higher-molecular-weight PAHs can be primarily transported by atmosphere deposition and the lower-molecular-weight PAHs can be mainly contaminated by riverine discharge into the Masan Bay and its vicinity. Loadings fluxes of PAHs into the Masan Bay and its vicinity were 39.2 g/day via atmosphere and 10.3 g/day via rivers, showing that atmospheric input was about 4 times higher than riverine one. Therefore, in order to minimize the contamination burden of PAHs from terrestrial sources to the Masan Bay and its vicinity, the control and management of PAHs deriving from atmosphere will be necessary.