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WRF, MM5, RSM 모형에서 모의한 2004년 7월 11-18일의 동아시아 몬순의 비교
함수련(Su-Ryun Ham),박선주(Seon-Joo Park),방철한(Cheol-Han Bang),정병주(Byoung-Joo Jung),홍성유(Song-You Hong) 한국기상학회 2005 대기 Vol.15 No.2
This study compares the summer monsoon circulations during a heavy rainfall period over the Korean peninsular from 11 to 18 July 2004, simulated by three widely used regional models; WRF, MM5, and RSM. An identical model setup is carried out for all the experiments, except for the physical option differences in the RSM. The three models with a nominal resolution of about 50 km over Korea are nested by NCEP-DOE reanalysis data. Another RSM experiment with the same cumulus parameterization scheme as in the WRF and MM5 is designed to investigate the importance of the representation of subgrid-scale parameterized convection in reproducing monsoonal circulations in East Asia. All thee models are found to be capable of reproducing the general distribution of monsoonal precipitation, extending northeastward from south China across the Korean peninsula, to northern Japan. The results from the WRF and MM5 are similar in terms of accumulated precipitation, but a slightly better performance in the WRF than in the MM5. The RSM improves the bias for precipitation as compared to those from the WRF and MM5, but the pattern correlation is degraded due to overestimation of precipitation in northern China. In the comparison of simulated synoptic scale features, the RSM is found to reproduce the large-scale features well compared to the results from the MM5 and WRF. On the other hand, the simulated precipitation from the RSM with the convection scheme used in the MM5 and WRF is closer to that from the WRF and MM5 simulations, indicating the significant dependency of simulated precipitation in East Asia on the cumulus parameterization scheme.
제품평가요소가 소비자태도에 미치는 영향 : 셀롤러폰과 PCS를 중심으로 Focus on Cellular-Phone and PCS
차수련,함영봉 동국대학교 경영대학원 1998 經營論叢-東國大學校 經營大學院 Vol.22 No.-
The purpose of this study is to offer some cue that to predict consumer attitude in the future market, to make an attitude on the product through the evaluation factors. The attitude was measured with four category as the factor of personal effect : experience, involvement, product knowledge, subjective norm. Involvement was used not to measure the attitude. but to extract of high-involvement. This study largely consist of literature review. hypothesis generation and experiment. At first this studies involved in this topic, and then built systematic models based on literature review and generated several hypothesis about personal factors : experience, product knowledge and subjective norms. On experiment objective, the reason of it to choice, it's definition, and recent situation are reviewed to base the hypotheses. To test hypotheses, I examine reliability, validity, and multi-regression analysis. In experience category, the factors passively influenced the attitude. In product knowledge, is influenced positively or negatively the attitude. Finally, in subjective norm, it's all factors negatively influence the attitude. It is to be against that the previous studies(SB influence positively the attitude.). Shortly, experience and product knowledge influence the consumer attitude, but subjective norm is not on the cellular-phone and PCS. This study has also a limitation that the results difficult generalization because the sample is limited by 20-30 ages. But the study can offer some cue that to predict the attitude and to make an attitude on the products in the future market.