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중년 사무직 남성의 직무스트레스와 허리둘레, 체질량지수의 관계에 관한 연구
강수임,고보경,김지영,노정연,리청,송주은,이현영,이혜민,최유경,정덕유,이민경 이화여자대학교 간호과학대학 2016 이화간호학회지 Vol.- No.50
Purpose: The purpose of this study was to determine the relationship between job stress, body mass index and waist circumference among middle aged male workers. Methods: Using a descriptive correlation study design, a total of 122 middle aged male workers were recruited through convenience sampling from November 8 to December 13, 2015. The questionnaire included in this study were general characteristics and the Korean Occupational Stress Scale-Short Form (KOSS-SF). Data were statistically analyzed using SPSS windows version 22 program with Pearson’s correlation coefficient. Results: A significant relationship was found between job stress, body mass index (p=.043) and waist circumference (p=.007). Conclusion: These results suggest that high job stress are significantly associated with both body mass index and waist circumference of middle aged male workers. This implies a need for intervention that focuses on reducing obesity and metabolic syndrome influenced by job stress.
강수철(姜秀喆),남승용(南勝龍),김만배(金萬培) 한국정책과학학회 2009 한국정책과학학회보 Vol.13 No.1
본 연구에서는 날로 심각해지는 교통혼잡에 대한 대책마련의 일환으로 차량을 보유하는 요인은 무엇인가와 출근형태별로 어떤 교통수단을 선택하는가에 대하여 실제 정기적으로 통근을 하는 직장인을 대상으로 설문조사를 통해 분석하였다. 자가용 차량을 보유하는 요인으로는 연령, 소득 등이 유의한 결과를 나타냈고, 출근형태별 차량보유확률에서는 외곽에서 서울로 통근하는 경우와 외곽에서 외곽으로 통근하는 경우가 서울에서 서울로의 통근에 비해 차량을 보유 할 확률이 높았는데, 그 가운데서도 외곽에서 외곽으로 통근하는 경우가 차량보유 확률이 가장 높았다. 출근형태별 교통수단 선택 행태에 관한 다항 로짓분석 결과 서울에서 서울로의 출근의 경우 자가용보다는 대중교통을 이용할 확률이 높았다. 서울에서 외곽으로 출근하는 경우와 외곽에서 외곽으로 출근하는 경우에는 대중교통보다는 자가용을 선택할 확률이 높았으며, 외곽에서 서울로 출근하는 경우에는 자가용보다는 대중교통 선택확률이 높았으나 통계적 유의성은 없는 것으로 나타났다. This study explores the determinants of car ownership as part of preparing against traffic jams which is getting worse everyday and the mode choice classified by how people go to work. This is investigated by using a survey of office workers who go to work regularly. The reliable determinants of car ownership were age and income, etc. Also, regarding the probability of car ownership classified by how people go to work, the probability of people who go to work from outside of Seoul to inside of Seoul and from outside of Seoul to other places which are not Seoul were higher the one which people go to work from Seoul to Seoul. Especially, the probability of car ownership of people who went to work from outside of Seoul to other places was the highest. The type of travel mode choice is investigated by using multinomial logit regression which is commonly used for investigating discontinuous decision making. As a result, the probability of using public transport was higher than the one of using own cars for the people who went to work from Seoul to Seoul. Also, probabilities to choose own cars were higher than the one to choose public transport for the people who went to work from both Seoul and outside of Seoul to other places outside of Seoul. The probability of using public transport was higher than using own cars for the people who went to work from outside of Seoul to Seoul but the statistical significance was poor.
강수석,윤덕용 대한금속재료학회(대한금속학회) 1975 대한금속·재료학회지 Vol.13 No.3
The effect of cooling rate of sintering on the strength of sintered Fe-Cu has been studied. The copper conteet was varied between 0 and 12 weight %. The tensile test specimens were prepared by usual powder metallurgy techniques. The compacts were sintered at 1120℃ for 40 minutes in hydrogen atmosphere and cooled to room temperature at various cooling rates over several temperature ranges. The strength of specimens with more than 2% Cu increased greatly with increasing cooling rates between 850℃ and 600℃ the eutectoid transformation range. For 8% Cu, the ultimate tensile strengths for the fast cooled and slow cooled specimens were about 35 and 20 ㎏/㎟ respectively. This observation is explained by the decreasing size of the precipitated Cu-rich phase with fast cooling rate in the eutectoid transformation. For 2% Cu specimens, the strength increased with slow cooling rate below 600℃. This is attributed to the precipitation hardening effect of the Cu-rich phase. In general the strength of sintered Fe-Cu increased with copper content reaching the maximum strength for different Cu contents at various cooling rate. The effect of cooling rate on dimensional change was found to be negligible.
한우 수송아지에 대한 황토, 일라이트, 올리고당, 활성탄 및 크롬 급여가 성장발육 및 면역기능에 미치는 영향
강수원,조창연,김준식,안병석,정하연,서국현 한국동물자원과학회 2002 한국축산학회지 Vol.44 No.5
한우 수송아지에 대한 육성기 항병력 증진물질 투여 효과를 규명하기 위하여 75일령에 이유된 한우수송아지 30두를 대상으로 사료내 항병력 증진물질 첨가 종류에 따라 6개 처리(T1: 관행사육, T2: 황토 2%첨가, T3: Illite 2%첨가, T4: Oligosacharides 0.04% 첨가, T5: Charcoal powder 2% 첨가, T6: Chromium picolinate 0.1% 첨가)를 두어 3개월령부터 7개월령까지 120일간 사양시험을 실시한 결과, 처리구별 일당 증체량은 T3, T6, T4, T5, T2 및 T1이 각각 0.92, 0.90, 0.90, 0.88, 0.83 및 0.82㎏으로 Illite 및 크롬은 이유직후 송아지의 성장발육에 영향을 미쳤으나 가공되지 않은 황토급여는 성장발육에 뚜렷한 효과가 없었다. 육성기 120일간 1일 평균 농후사료 섭취량 및 체중대비 섭취비율은 각각 3.91∼4.15㎏, 평균 4.03㎏ 및 3.1∼3.31%, 평균 3.21%였고, 1㎏ 증체에 소요된 TDN 량은 3.20∼3.57㎏, 평균 3.35㎏으로 T5, T3, T6, T4, T2 및 T1 순으로 우수하였다. 송아지의 혈청 내 IgG 농도는 처리구별로 10.2∼11.6㎎/㎖ 내에서 변화하여 정상 축에서 볼 수 있는 범위 내에 있었지만, T3 및 T5는 개시시에 비해 각각 6.9 및 2.8% 증가하였으며, 질병발생은 처리구별로 뚜렷한 차이가 없었다. 이상과 같은 결과들로 볼 때, 점토광물인 Illite는 다른 항병력 중진물질과 마찬가지로 어린 송아지의 발육 및 사료이용성을 증진시키지만 가공되지 않은 황토의 급여는 발육 및 사료 이용성에 뚜렷한 차이가 없는 것으로 나타났다. This study was conducted to examine the effect of Hwangto, Illite, and any other disease resistant materials as dietary supplements on the growth performance and immunity for growing period with 30 Hanwoo male calves weaned 75days in age. Feeding trial was conducted with 6 treatments(five heads/treatment), which were T1(Control), T2(Control + 2% Hwangto), T3(Control + 2% Illite), T4(Control + 0.04% Oligosacharides), T5(Control + 2% Charcoal powder) and T6(Control + 0.1% Chromium picolinate) for 120 days from three to seven months in age. The results obtained are summarized as follows; During the experimental period, average daily gains were 0.82 to 0.92㎏, and were high in the order of T3, T6, T4, T5, T2 and T1. Especially the growth rate of calves for growing period was higher in Illite, chromium-picolinate and oligo- sacharides feeding groups than in any other groups. Average daily intakes and intake ratio to body weight of concentrates for 120 days were 3.91 to 4.15㎏(average 4.03㎏) and 3.10 to 3.31% (average 3.21%), respectively. TDN intakes per kilogram gains were 3.20 to 3.57㎏(average 3.35㎏) and were smaller in the order of T5, T3, T6, T4, T2 and T1, respectively. Density of IgG in serum of calves measured by the IgG SDID Kit was 10.2 to 11.6㎎/㎖, and especially increase rate of IgG for experimental period was high in T3 and T5 by 6.9 and 2.8%, respectively. But incidence of disease was not found to be different by treatments. According to the above results it may be concluded that Illite is a sort of clay minerals increased the growth rate, feed efficiency and immunity of early weaned calves for growing period, but was not in unprocessed Hwangto.