http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이재범,김선태,Lee, Jae-Bum,Kim, Seon-Tai 한국재료학회 2006 한국재료학회지 Vol.16 No.12
In this study, we report a method to synthesize the aluminum nitride (AlN) powders from aluminum oxyhydroxide (AlOOH). AlOOH powders were prepared from the aluminum hydroxide ($Al(OH)_3$) by heattreatment at the reaction temperature of $350^{\circ}C$. Simple heat treatment of AlOOH in the flow of $NH_3$ gas leads to the formation of hexagonal AlN powders through intermediate conversion of ${\delta}-,\;{\gamma}-$ and ${\alpha}-Al_2O_3$. The FTIR transmission spectra show a broad peak related to Al-N bonds centered around 690 $cm^{-1}$ confirming the presence of AlN. The major peaks in Raman spectra were observed in 250 $cm^{-1}$ and 659 $cm^{-1}$. From the results, synthesized powders from the AlOOH powders were confirmed AlN powders.
고체 입자가 부상된 충돌제트에서의 입자 거동에 관한 수치해석적 연구
이재범,서영섭,이정희,최영기,Lee, Jae-Beom,Seo, Yeong-Seop,Lee, Jeong-Hui,Choe, Yeong-Gi 대한기계학회 2001 大韓機械學會論文集B Vol.25 No.12
The purpose of this study is to analyze numerically the movement of particles included in turbulent fluid flow characteristics of metallic surfaces. To describe fluid flew, the incompressible Navier-Stokes equation discretized by the finite volume method were solved on the non-orthogonal coordinates with non-staggered variable arrangement, and the k-$\xi$ turbulence model was adapted. After fluid flow was calculated, particle movement was predicted from the Lagrangian approaches. Non-essential complexities were avoided by assuming that the particles had spherical shapes and the Stoke's drag formula only consisted of external farces acting upon them. In order to validate the numerical calculations, the results were compared with the experimental data reported in literature and agreed well with them. The drag force coefficient equation showed better agreement with the experimental data in the prediction of particle movement than the correction factor equation. Impact velocity and impact angle increased as inlet turbulence intensity decreased, relative jet height was lower. or the Reynolds number was larger.
여행사종사원들의 진로준비행동과 진로적응성 간의 영향관계 분석
김종상(Kim, Jong-Sang) 한양대학교 관광연구소 2018 觀光硏究論叢 Vol.30 No.4
본 연구는 여행사종사원들의 진로준비행동과 진로적응성 간의 영향관계를 분석하여 여행기업의 인적자원개발에 시사점을 제공하기 위한 목적으로 수행되었다. 연구방법은 정량적 연구방법을 선정하여 회귀분석 방법으로 분석하였다. 그 결과, 도구준비행동을 제외한 정보수집행동과 목표달성행동이 진로적응성의 목표의식, 대인관계, 직무능력, 긍정적 태도에 영향을 미치는 것으로 나타났다. 여행사종사원들은 진로준비과정에서 실무학습을 수행하는 것 보다, 여행사 직업관련 정보수집행동과 입사지원, 면접수행 등을 의미하는 목표달성행동을 중요하게 인식하고 있었다. 이러한 결과로부터 정보수집행동과 목표달성행동은 단순히 채용정보만을 수집하고 여행사를 선택하여 입사지원등을 수행하는 것이 아니라 변화하는 직무특성과 기업의 특성을 체험하는 행동으로 정의될 수 있음을 인식할 수 있었다. The purpose of this study was to analyze the relationship between career preparation behavior and career adaptability of travel agency employees to provide implications for the development of human resources for travel companies. To empirically test the data, regression analysis was used. The results showed that information collection behavior and goal attainment behavior, excluding tool preparation behavior, affect the sense of goals, interpersonal relationships, job competency, and positive attitude. Rather than conducting major study in preparation for the career path, travel agency employees were aware of the importance of collecting about job information related to travel agency, applying for employment, and conducting interviews. From these results, information collection behavior and goal attainment behavior can be defined as an act to experience changing job characteristics and corporate characteristics rather than simply collect employment information and select travel agencies to provide job support.