• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2006년도 추계학술대회논문집
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• pp.492-497
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• 2006

This study gives the results of the measurements and analysises of the reverberation times in a small room such as apartment houses. We measured the RT by changing measurement conditions, which were sound sources. sound source's positions, receiving point & height, sampling time and so on. The critical factor affecting reverberation time was sound source in unoccupied houses and the reverberation time differences between result of RT using impulsive and interrupted sound source was 0.3sec at 500Hz frequency. And the difference of RT due to sound sources affected the sound insulation such as apparent sound reduction index and sound level difference about 1dB at each frequency in unoccupied houses.

• 한국보육지원학회지
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• 제14권1호
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• pp.187-202
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• 2018

Objective: The study aims to examine fathers' parental stress and the variables effecting parental stress of fathers with infants. Methods: One hundred seventeen fathers with 0 to 2 year-olds were recruited from daycare centers in Daejeon metropolitan city. The Korean version of the Parenting Stress Index Short Form (K-PSI-SF) by Lee, Jung, Park and Kim(2008), The Korean Occupational Stress Scale-Short Form (Koss-SF) by Jang and Ko(2005), and the Revised-Kansas Marital Satisfaction Scale(RKMSS) by Chung (2004) were used to measure fathers'parental stress, occupational stress, and marital satisfaction. Results: First, the most influential variable that affected father's parental stress was their marital satisfaction. The fathers felt less parental stress when they felt higher marital satisfaction. Second, fathers felt less parental stress when their occupational environments were family friendly. Conclusion/Implications: Ways to improve mariatal satisfacation and a family friendly evironment at work should be sought out in order to lessen the parental stress of fathers raising infants.

• 대한가정학회지
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• 제48권5호
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• pp.103-117
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• 2010

The purpose of this study was to examine relationships among body image attitudes and their correlates in early adolescence. The participants were 614 adolescents. The results were as follows: 1) There were significant correlations among adolescents' body image evaluation, body image investment, body mass index, depression, perceptions of parental and peer influence, and awareness of media messages regarding physical appearance, 2) There were significant differences in depression, parents' influence, peer influence, and awareness of media messages regarding physical appearance between adolescents with higher body image investment and those with lower body image investment, and 3) Awareness of media messages regarding physical appearance was the most influential predictor of adolescents' body image investment.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2006년도 춘계학술대회논문집
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• pp.443-446
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• 2006

For the satisfaction of the high engine performance and the low radiated sound pressure simultaneously, the duct length in the vehicle intake/exhaust system should be tuned carefully in the design and development stage of a vehicle. This study was concerned about the effects of intake duct length in clean and dirty sides on the radiated sound emitted from an inlet. An index derived from the existing prediction model of radiated sound pressure was employed to determine which duct was more influential to the radiated sound. Comparing the experimental and predicted results, we found that the change of dirty-side duct length caused a larger change than that in the clean side in the radiated sound level from a tested intake system.

• 한국안전학회지
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• 제25권2호
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• pp.71-77
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• 2010

According to the Korea National Statistical Office data in 2008, the population over ages of 65 years would possess to 10.7% whole population of Korea in 2009 denoting Korea is already in the aging society. In addition, the office also expected that Korea would enter in the aged population over 65 years: 14.3% and post-aged 20.8% society in 2019 and 2026 respectively, and which suggests that an averaged age of workers in Korean industries may increase rapidly in future. The main purpose of this study is to assess the work ability and the job stress of each age group in order to identity the influential factors on those items. To this end, Questionnaires about work ability and job stress were distributed to practitioners in shipbuilding industry and statistical analysis was performed to assess work ability and the job stress based on the responses from the practitioners.

• Journal of Preventive Medicine and Public Health
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• 제31권3호
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• pp.384-394
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• 1998

In order to investigate the effect of the urinary excretion of sodium and potassium on the change on blood pressure over 3 years, 668 adolescents aged 13 years living in Kangwha area were investigated in a longitudinal follow-up study. Two measurements were taken on each blood pressure (diastolic, systolic) and the average of the two readings was used in the analysis. Sodium and potassium intake were estimated by the determination of those electrolytes in 24hr urine. The mixed model regression analysis was used to identify the effect of urinary sodium and potassium on the change of blood pressure after controlling for BMI of each age. On simple bivariate analysis no relationship was found between urinary sodium excretion and systolic or diastolic blood pressure among both male and female, however, a significant positive association between urinary potassium excretion and systolic blood pressure among male. The results of mixed regression analysis showed that the body mass index (BMI) were more influential that urinary electrolytes among this study subjects. It suggested that risk factors observed from the adults, may not be identical with that of the growing aged population. After control of the BMI and age, significant association between sodium and diastolic BP among male, and association between potassium and systolic BP among female, were found. In summary, the results indicate that growth has been more influential than dietary factor on blood pressure for growing aged population.

• 정보관리학회지
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• 제32권4호
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• pp.205-221
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• 2015

학술지의 인용빈도를 특정하여 산출된 지수로 단일 논문의 영향력을 평가하는 것에 대한 비판으로 인해 단일 논문의 인용 영향력을 측정하는 인용지수에 대한 연구가 다양하게 시도되었다. 이 연구에서는 8개의 단일 논문 인용영향력 평가 지수를 살펴보고 KCI 논문 데이터베이스를 대상으로 각 인용지수의 분야별 편향성을 조사하여 보았다. 대상 지수는 단순 인용빈도, 페이지랭크, f-값, CCI, c-지수, 단일문헌 h-지수, 단일문헌 hs-지수, cl-지수였다. 분석결과 페이지랭크가 학문 분야별 균등성, 학문 분야 내에서 학술지별 균등성 영역에서 가장 편향성이 없는 것으로 나타났다. 반면에 단순 인용빈도는 특정 학문분야나 특정 학술지에 편향된 결과를 산출할 가능성이 높은 것으로 나타났다. KCI 데이터베이스에서는 논문의 단순 인용빈도만 제공하고 있는데, 분야별 균등성을 가장 잘 유지하는 지수인 논문 페이지랭크를 함께 제공할 필요가 있다. 아울러 인용한 문헌의 인용빈도만으로 산출이 가능해서 이용자의 검색 결과로부터 바로 산출할 수 있는 지역 네크워크 지수 중에서는 cl-지수가 가장 균등성을 잘 유지하므로 계산 과정과 서비스가 손쉬운 지수로 함께 제공하는 것도 검토해야 한다.

• 벤처혁신연구
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• 제1권2호
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• pp.61-73
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• 2018

고객충성도에 영향을 미치는 변인과 이들 변인의 예측력 향상을 위한 노력은 계속되어져 왔다. 고객만족도가 고객 충성도에 가장 큰 영향을 미치는 것으로 간주되어왔으나, 2003년 고객추천지수(NPS)가 나오면서 이 방법의 예측력이 우수하다는 연구 결과도 많이 나왔다. 이후 2010년 고객노력지수(CES)가 등장하면서 서비스 기업의 충성도 예측은 고객노력지수가 우수하다는 주장도 있어왔다. 이에 본 연구에서는 3가지 측정방법을 기본가정, 시간관점, 측정항목, 활용 목적에 따른 유용성, 적용분야, 적용한계라는 6가지 기준으로 비교 분석하였다. 지금까지의 실증 연구결과를 보면 어느 하나의 방법이 모든 산업분야에 걸쳐 예측력이 뛰어나다고 할 수 없으며 산업별, 활용 목적에 따라 측정 방법을 단독 혹은 혼합해서 사용하는 것이 예측력을 보다 제고 할 수 있다.

• Journal of Nutrition and Health
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• 제24권1호
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• pp.30-39
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• 1991

This study was designed to investigate the effects of dietary calcium. serum estrogen level and physical activity on the bone status of 116 healthy elderly women living in urban area. Current calcium intake was assessed by convenient method(refered to as Ca intake) and calcium containing food frequency method(refered to as Ca index) Daily activity record was used for the estimation of physical activity level, and serum estrogen level was measured from fasting blood of subjects. The rate of bone resorption was evaluated by the determination of hydroxyproline(Hpr) in fasting urine with correction for creatinine excretion. The results of this study are summarized as follows : 1) Average daily Ca intake of subjects was 621.4$\pm$155.8mg, which is above the Korean recommended dietary allowances. However 44.8% of the subjects consumed Ca below RDA level. Ca index score was significantly correlated with the bone status(P<0.05), Ca intake did not show significant correlation with the bone status although a positive trend of influence was evident. 2) Average serum estrogen level of subjects was 18.7$\pm$9.8pg Contrary to our anticipation. estrogen level did not show any significant relation to age and bone status. 3) Daily physical activity was classified into four categories by activity intensity : sedentary. moderate, active and severe. The average physical activity of subjects belong to moderate level. and the bone status was significantly related to the physical activity(P<0.01) 4) Among other influential factors such as age, pocket-money. family type. drinking, smoking and BMI, there was a significant difference between bone status and BMI(P<0.05). 5) Multiple regression analysis of variables showed that physical activity has greater effect than other variables when the entire subjects were taken into account. However. eliminating the subjects whose bone status rated as excellent(Hpr/cr<0.009), Ca index showed higher correlation than physical activity. These results have demonstrated that dietary calcium intake is the primary important factor for keeping good bone health and that bone status of subjects with a sufficient calcium intake is affected by various factors such as physical activity, age, smoking. BMI and others.

• 한국산학기술학회논문지
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• 제17권2호
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• pp.672-677
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• 2016

본 논문은 LQ(Location Quotient) 분석을 기준으로 경기도 권역 특성에 맞는 산업생태계 기반의 경쟁력 있는 문화콘텐츠 산업을 분석하였다. 매출액 기준의 경우 만화, 캐릭터, 출판, 지식정보 산업이, 사업체 수 지표의 경우 만화, 음악, 게임, 캐릭터, 지식정보 산업, 종사자수의 경우 출판, 만화, 게임, 영화, 캐릭터 산업이 LQ 1.0 이상의 경쟁력 있는 콘텐츠 산업으로 제시되었다. 또한 경기지역의 매출액, 사업체수와 종사자수의 산업생태계 기초 지표 모두에서 입지분석인 LQ 1.0 이상의 고 경쟁력을 보인 핵심역량을 가진 산업은 만화와 캐릭터산업으로 나타났다. 본 연구의 시사점은 산업 클러스터의 형성을 통한 지식과 정보, 인력의 흐름은 산업성장을 이끌 수 있으므로 경쟁력 있는 산업군의 파악은 지역 클러스터의 핵심역량강화의 가장 중요한 핵심요소라는 점이다.