• 한국노년학
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• 제29권4호
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• pp.1521-1538
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• 2009

본 연구는 노인의 문제음주와 우울, 자아존중감 및 삶의 만족도와의 구조적 관계에 대한 빈곤노인집단과 비빈곤노인집단간의 차이를 검증하기 위해 구조방정식모형을 적용한 다집단분석 및 잠재평균분석을 실시하였다. 2007 한국복지패널 2차년도 조사자료 중 만 65세이상 노인 3,589명을 분석대상으로 하였으며, 이 중 빈곤노인은 2,471명, 비빈곤노인은 1,118명이었다. 잠재평균분석결과, 빈곤노인이 비빈곤노인에 비해 문제음주성향과 우울감이 더 높았고 자아존중감과 삶의 만족도는 더 낮은 것으로 나타났으며, 특히 우울감과 자아존중감은 집단간 뚜렷한 차이를 보이는 것으로 나타났다. 다집단분석을 통해 각 요인간의 구조적 관계를 빈곤노인과 비빈곤노인의 집단 차이를 통해 살펴보니 문제음주와 우울의 정적인 관계는 두 집단 모두에게서 나타났고, 우울과 삶의 만족도간의 부적인 관계는 빈곤노인에게서만, 문제음주와 자존감과의 부적인 관계는 비빈곤노인에게서만 나타났다. 노인의 문제음주와 삶의 만족도와의 관계에서 우울의 매개효과는 빈곤노인집단에게서만 확인되었다. 특히 본 연구에서는 집단간 평균검증에서는 유의미한 차이가 나타나지 않았던 노인의 문제음주 변인이 오차오류를 통제한 잠재평균분석에서는 유의미한 차이가 있는 것으로 검증되어, 소득수준이 낮을수록 문제음주 경향이 더 높다는 의미있는 결과를 제시하였다. 조사결과를 통해 우리나라 노인의 삶의 질과 관련한 문제음주 대책은 노인의 사회경제적 상황을 고려한 심층적이고 체계적인 접근이 필요하며, 노인 문제음주에 대한 접근에서도 예방과 치료에 있어 우울과 자아존중감과 같은 심리정서적 요인들을 동시에 고려하여야 함을 알 수 있었다.

• Journal of Chest Surgery
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• 제23권1호
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• pp.90-94
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• 1990

Between Dec. 1958 and Oct. 1989, we had been experienced 14 cases of the esophageal corrosion carcinoma among 562 cases of corrosive esophageal stricture, which incidence was revealed 5.6 % of total esophageal carcinoma cases and 2.5 9o of total benign esophageal stricture cases. The age distribution was from 15 to 64 years, and the mean age was 45.6 years. Ten of the patients were women. The caustic agents were lye in 12 patients and hydrochloric acid in 2 patients. The latent time from injury to the development of carcinoma was from 12 years to 45 years, and the mean latent time was 29 years. In majority of cases, the developing site of carcinoma was just or just above the benign stricture portion of the esophagus. Corrective surgery were made in seven cases; three cases were made esophagectomy and esophagogastrostomy, and the other four cases were made esophagectomy and colon interposition. Palliative surgery including feeding gastrostomy were made in seven cases. All cases had a longstanding history of difficult oral swallowing especially at the site of stricture. We think chronic food irritations of stricture portion of the esophagus induced the development of corrosion carcinoma. In conclusion, we had to suspect possibility of carcinoma in patient with long standing history of benign esophageal stricture. So we recommended preoperative esophagoscopic biopsy in such cases.

• 한국환경과학회지
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• 제15권7호
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• pp.653-657
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• 2006

Based on the monthly weather report of Korea Meteorological Administration (KMA) and daily sea surface temperature (SST) data from National Fisheries Research and Development Institute (NFRDI) (1995-2004), mean heat fluxes were estimated at the port of Yeosu. Net heat flux was transported from the air to the sea surface during February to September, and it amounts to $205 Wm^{-2}$ in daily average value in May. During October to January, the transfer of net heat flux was conversed from the sea surface to the air with $-70 Wm^{-2}$ in minimum of daily average value in December. Short wave radiation was ranged from $167 Wm^{-2}$ in December to $300 Wm^{-2}$ in April. Long wave radiation (Sensible heat) was ranged from $27 (-14) Wm^{-2}$ in July to $90 (79) Wm^{-2}$ in December. Latent heat showed $42 Wm^{-2}$ with its minimum in July and $104 Wm^{-2}$ with its maximum in October in daily average value.

• 한국해양학회지
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• 제19권2호
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• pp.163-171
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• 1984

대기 및 해양적 요인들이 동해의 해면을 통한 열교환에 미치는 영향을 구명 하기 위하여, 해양의 열수지에 근거한 해석적인 모델을 만들고, 이 모델을 통하여 동해상 해면 열교환의 각 성분과 대기 온도의 연변화를 해석적으로 재현 (simulation) 하였다. 모델에 의한 이론적인 결과에 의하면, 동해에서 난류에 의한 열수송이 클수록 열복사, 잠열 및 현열의 방출이 증가한다. 그리고 표면수온이 증 가 함에 따라 잠열은 증가하지만, 역복사와 현열은 감소한다. 동해에서 연평균 수온이 1$^{\circ}C$ 증가하면 해상 기온의 연평균이 1.2$^{\circ}C$ 증가하는 효과를 가져오며, 해양의 저열량의 크기는 해면을 통한 열교환의 연변화에 지대한 영향을 미친다.

• 과학교육연구지
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• 제43권1호
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• pp.1-16
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• 2019

This exploratory study is aimed at exploring the validity of the Science Motivation Questionnaire (SMQ) developed for university students, to measure the science motivation of middle school students and analyze the differences on gender and country factors of SMQ. A total of 371 students participated in this study: 171 middle school students from the USA and 200 secondary students from Korea. All participants were enrolled in the STEM program and activities in Utah, USA (for US students) and at a Korean university institute for gifted and talented students (for Korean students). In this study, exploratory and confirmatory factor analyses and latent mean analysis were used to analyze the gender and country differences. The results indicated that the 25 items of SMQ scale were theoretically meaningful and valid for middle school students. The latent mean difference by gender indicated that male students have higher intrinsic motivation, career motivation, grade motivation, and self-determination than female students. Moreover, a significant difference exists in these factors between the two countries. Further findings reveal that Korean students scored higher than US students in terms of the aforementioned factors. This study will provide significant insights in and contribution to science motivation issues in STEM education and the development of design-based engineering programs.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2016년도 춘계 종합학술대회 논문집
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• pp.383-384
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• 2016

The Special Needs Education Assessment Tool (SNEAT) were verified of reliability and validity. However, the reliability and validity has been verified is only Okinawa Prefecture, the national data has not been analyzed. Therefore, this study aimed to verify the reliability and construct validity of SNEAT in Miyagi Prefecture as part of the national survey. SNEAT using 55 children collected from the classes on independent activities of daily living for children with disabilities in Miyagi Prefecture between November and December 2015. Survey data were collected in a longitudinal prospective cohort study. The reliability of SNEAT was verified via the internal consistency method; the coefficient of Cronbach's ${\alpha}$ were over 0.7. The validity of SNEAT was also verified via the latent growth curve model. SNEAT is valid based on its goodness-of-fit values obtained using the latent growth curve model, where the values of comparative fit index (0.997), tucker-lewis index (0.996) and root mean square error of approximation (0.025) were within the goodness-of-fit range. These results indicate that SNEAT has high reliability and construct validity.

• 한국환경과학회지
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• 제18권1호
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• pp.33-39
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• 2009

Based on the monthly weather report of Korea Meteorological Administration (KMA) and daily sea surface temperature (SST) data from National Fisheries Research and Development Institute (NFRDI) in 2006, heat budget was estimated at Gampo in the eastern coast of Korea, the region occuring the cold water known as upwelling in summer. Net heat flux was transported from the air to the sea surface during February to November, and it amounts to $345Wm^{-2}$ in monthly mean value. During December to January, the transfer of net heat flux was conversed from the sea surface to the air with $-56Wm^{-2}$ in minimum of monthly mean value in January. Long wave radiation was ranged from $6Wm^{-2}\;to\;106Wm^{-2}$. Sensible heat was varied from $-36Wm^{-2}$(June) to $61Wm^{-2}$(February) and showed negative values from April to August. Latent heat showed $20Wm^{-2}$(July) with its minimum in July and $49Wm^{-2}$ with its maximum in March in monthly mean value. The annual mean of net heat flux is $129Wm^{-2}$, giving an annual heat surplus of $22Wm^{-2}$. Thus, during summer, the upwelled cold water at Gampo, appears to compensate the heat gain. However the ways in which these compensations are accomplished remains to be clarified.

• 한국문헌정보학회지
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• 제47권3호
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• pp.343-361
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• 2013

본 연구는 스피치 요약을 위해서 태그를 확장하고 또한 태그 간의 의미적 관계 정보를 이용할 수 있는 태그의미분석 방법을 제안하고 평가하였다. 이를 위해서, 먼저 비디오 태그를 확장하고 태그 간의 의미적 관계를 분석하는데 있어서 플리커의 태그 클러스터와 워드넷의 동의어 정보가 얼마나 효과적으로 이용될 수 있는가 조사해 보았다. 그런 다음 태그의미분석 방법의 특성과 효율성을 조사해 보기 위해서 제안한 방법을 잠재의미분석(Latent Semantic Analysis) 방법과 비교해 보았다. 분석 결과, 플리커의 태그 클러스터는 효과적으로 이용되었지만 워드넷은 효과적으로 이용되지 못한 것으로 나타났다. F측정을 사용하여 두 방법의 효율성을 비교한 결과, 제안한 방법의 F값(0.27)이 잠재의미분석 방법의 F값(0.22)보다 높게 나타났다.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2006년도 Proceedings of ISRS 2006 PORSEC Volume II
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• pp.752-755
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• 2006

Evaportranspiration is an important factor in hydrology cycle. Traditionally, it is measured by using basin or empirical formula with meteorology data, while it does not represent the evaportranspiration over a regional area. With the advent of improved remote sensing technology, it becomes a surface parameter of research interest in the field of remote sensing. Airborne and satellite imagery are utilized in this study. The high resolution airborne images include visible, near infrared, and thermal infrared bands and the satellite images are acquired by MODIS. Surface heat fluxes such as latent heat flux and sensible heat flux are estimate by using airborne and satellite images with surface meteorological measurements. We develop a new method to estimate the evaportranspiration over the rice paddy. The surface heat fluxes are initialized with a surface energy balance concept and iterated for convergent solution with atmospheric correct functions associated with aerodynamic resistance of heat transport. Furthermore, we redistribute the total net energy into sensible heat and latent heat fluxes. The result reveals that radiation and evaporation controlled extremes can be properly decided with both airborne and satellite images. The correlation coefficient of latent heat flux and sensible heat flux with corresponding in situ observations are 0.66 and 0.76, respectively. The relative root mean squared errors (RMSEs) for latent heat flux and sensible heat flux are 97.81 $(W/m^2)$ and 124.33 $(W/m^2)$, respectively. It is also shown that the newly developed retrieval scheme performs well when it is tested by using MODIS date.

• 한국심리학회지 : 문화 및 사회문제
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• 제27권4호
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• pp.561-584
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• 2021

본 연구는 한국 성인 601명을 대상으로 이들의 사랑유형에 따른 잠재집단을 분류하고, 각 집단별 우울 수준의 차이 및 잠재집단 구분에 영향을 주는 변인(성차, 연령, 결혼여부, 신경증, 불안애착, 정서조절)을 파악하고자 수행되었다. 잠재집단분석(LCA)을 실시한 결과, 한국성인의 사랑유형의 잠재집단은 친밀감, 열정, 책임감의 세 요인 모두에 대해 가장 높은 수준을 보이는 L-H(7.7%)집단, 세 요인 모두 평균보다 높은 수준을 나타내는 L-MH(33.6%)집단, 세 요인 모두 평균 수준을 나타내는 L-M(39.8%)집단, 세 요인 모두 평균보다 낮은 수준을 보이는 L-ML(14.6%)집단, 세 요인 모두가 가장 낮은 수준을 보이는 L-L(4.3%)집단으로 분류됨을 확인하였다. 또한, 한국 성인의 사랑유형 각 잠재집단에 따라 우울 수준에 차이가 있는지 ANOVA 검증 결과, L-MH집단이 L-ML집단에 비해 심리적으로 보다 건강하고 적응적인 집단으로 나타났다. 다항로지스틱 분석 결과, 여성은 남성에 비해 L-M, L-ML 및 L-L집단에 속할 가능성이 높았고, 미혼은 기혼에 비해 L-M, L-ML집단에 속할 가능성이 높았다. 또한, 불안애착 수준이 높을수록 L-H, L-MH집단보다 L-M, L-ML, L-L집단에, L-M집단보다 L-ML와 L-L집단에, L-ML집단보다 L-L집단에 속할 가능성이 높았으나, 연령과 신경증, 정서조절은 잠재집단 구분에 영향을 미치지 않았다. 본 연구는 한국 성인의 사랑유형에 대한 다양한 하위 잠재집단을 보다 입체적으로 파악하여 집단별 특성에 따른 차별적 개입의 가능성을 제시했다는 점에서 의미가 있다.