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多穗多蘖性 옥수수 硏究 Ⅵ. IK 自殖系統의 導入系統과의 組合能力
Heebong Lee(李喜鳳),Bongho Choe(崔鳳鎬) 한국육종학회 1991 한국육종학회지 Vol.23 No.4
This experiment was conducted to develop hybrid corn with tillers. Seven hybrids, which were made from crosses among the three derived lines from Korean local maize lines(IK₁, ₂, and IK₃) and two exotic inbreds(PI213749 and Teosinte), were compared with check hybrids(P3160). Tasseling days of tillered hybrids were generally delayed by 7 days, while stem height of hybrids tillering were similar and ear height were high compared with check hybrid. Number of tillers per plant in all tillering hybrids were about 4.0, but effective tiller of these was only 2 to 3. Average ears per plant were about 5. Especially, ear size and seed set of IK₂/PI213749 of these hybirds were very promising. Accordingly, yield per 10a of these tillered hybrids wad also higher than that of check hybrid. Fresh weight per 10a was 10.3tons in IK₂/PI213749. Dry weight of these hybrids(1.7tons) was significantly higher than that of the check hybrid(1.2 tons). Correlation coefficients between fresh weight and tillers per plant, and stem height, and tillers per plant were very high, and between yield per 10a and ears per plant, and kernels weight per plant, and ear weight per plant, and 100 kernel weight were also high. Estimated heritabilities of tillers per plant and ears per plant were very low but heritabilities for other characteristics were very high. The contribution of ear weight and tillers upon yield per 10a were assumed to be the most influential characteristics by path coefficient analysis. However, these characteristics were regared as a effective selection marker for the hybrids development with multi-ear and tillers.
경찰공무원에서 외상후스트레스장애와 기질 및 성격 특성의 관계
이정현,김옥주,남윤영,신정하,이희봉,김지애,심민영,Lee, Junghyun H.,Kim, Ok Joo,Nam, Yoon-Young,Shin, Jungha,Lee, Heebong,Kim, Jiae,Sim, Minyoung 대한불안의학회 2015 대한불안의학회지 Vol.11 No.1
Objective : Police officers are exposed to job-related traumatic events and have a high prevalence of post-traumatic stress disorder (PTSD). This study examined the relationship between PTSD symptoms and dimensions of temperament and character in police officers. Method : Thirty-six police officers participating in a psychological support program were enrolled. All subjects were asked to complete a demographic questionnaire, the Impact of Event Scale-Revised (IES-R), the Temperament and Character Inventory (TCI) and other self-reported symptoms scales. Results : Among all participants (age $40.8{\pm}10.2$, men 94.4%), the rate of 'post-traumatic stress symptoms group' was 47.2%. After controlling for confounding factors, lower self-directedness scores were significantly associated with higher PTSD symptoms (${\beta}=0.6$, p=0.03) in multiple regression analysis. Conclusion : Character traits, especially self-directedness, were associated with the severity of PTSD symptoms severity. These findings may provide useful information regarding personality factors related to PTSD in police officers.
소방공무원 대상 캠프 프로그램의 스트레스 완화 효과 추적 및 관련 요인 탐색
신정하(Jungha Shin),심민영(Minyoung Sim),이정현(Junghyun H. Lee),이다영(Da Young Lee),전경선(Kyungsun Jeon),오승아(Seunga Oh),김지애(Jiae Kim),김옥주(Okju Kim),양정일(Jungil Yang),이희봉(Heebong Lee) 대한스트레스학회 2018 스트레스硏究 Vol.26 No.2
본 연구의 목적은 캠프 프로그램에 참가한 소방공무원의 스트레스, 우울, 외상후 스트레스의 변화를 전향적으로 조사하여 캠프 프로그램의 효과를 검증하고, 스트레스 완화와 관련된 요인을 분석하는 것이다. 이를 위해 총 5회에 걸쳐 지각된 스트레스(PSS-K), 영역별 스트레스(GARS), 외상후 스트레스 증상(IES-R) 및 우울감(BDI-II)의 변화를 시간 경과에 따라 분석하고, 캠프 후 6개월 시점의 스트레스에 영향을 미치는 요인을 조사하였다. 연구결과 스트레스 수준은 캠프 참여 전보다 낮아져 캠프 후 6개월까지 지속되었으나, 우울감은 캠프 직후에만 감소를 보였다. 캠프 참여 전 직장 스트레스가 높고 질병 스트레스가 낮을수록 캠프 프로그램을 통한 스트레스 완화 효과가 큰 것으로 나타났다. Background: This study aims to test the effectiveness of a camp program and to analyze the factors related to stress relief. To this end, the present study conducted prospective research for six months on the change of stress, depression, and the level of post-traumatic stress among the firefighters who participated in the camp program. Methods: The perceived stress (PSS-K), stress by the different portion (GARS), post-traumatic stress symptoms (IES-R) and depression (BDI-II) were evaluated at five sessions over the span of six months, and the change of each measure was analyzed. Those five sessions were before the camp, right after the camp and a month, three months and six months after the camp. Moreover, this study assessed characteristics of sociodemographic, firefighting task and mental health that are related to the level of stress at six months after the camp. Results: Compared with before the camp, the level of depression was significantly lower right after the camp. However, the level did not have significant difference after a month period. At one month after the camp, the level of stress was significantly lower than before the camp, and was maintained after six months. The predictive factors of the degree of stress relief after the camp were high job stress and low disease stress. Conclusions: This study has found that the stress relief from the camp continued until six months after the camp, and the stress-relieving effect through the camp was substantial for those with higher job stress and lower disease stress.