• 암석학회지
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• 제25권1호
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• pp.13-27
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• 2016

거창지역의 쥬라기 화강암에 내재하는 결의 특성을 분석하였다. 미세균열의 간격에 대한 분포상은 박편의 확대사진(${\times}6.7$)에서 도출하였다. 여섯 방향의 결에 대한 평가는 (1) 미세균열의 간격의 빈도수(N), (2) 총 간격의 빈도수(N:191) 대비 빈도율(${\leq}1mm$ 및 4 mm >), (3) 총 간격(118.49 mm) 대비 간격율(${\leq}1mm$), (4) 평균 간격($S_{mean}$), (5) 평균 간격과 중앙 간격($S_{median}$) 사이의 차이값($S_{mean}-S_{median}$), (6) 간격의 밀도, (7) 중앙 간격, (8) 길이의 빈도수 대비 간격의 빈도수의 감소비율 및 (9) 도표의 분포형과 관련된 지수(${\lambda}$ and b)의 크기와 같은 9개의 파라미터를 이용하여 수행하였다. 특히 상기 간격의 파라미터 그리고 간격-누적빈도 도표에서 도출한 파라미터 사이의 밀접한 상관성을 도출하였다. 3개 결 그리고 3개 면에 대한 파라미터의 값 사이의 상관성 분석의 결과는 다음과 같다. (I) 파라미터(1, 2 및 3), (II) 파라미터(4, 5 및 6), (III) 파라미터(7), (IV) 파라미터(8) 및 (V) 파라미터(9)의 값은 H(3번 결, H1+H2) < G(2번 결, G1+G2) < R(1번 결, R1+R2), R < G < H, R < H < G, G < H < R 및 H < G < R의 다양한 순서를 각각 보여준다. 반면에 3개 면에 대한 상기 4개 그룹(I~IV)의 파라미터의 값은 역순을 보여준다. 이러한 유형의 상관성 분석은 3개 채석면의 판별에 유용하다. 여섯 간격-누적빈도 도표를 주요 파라미터($S_{mean}-S_{median}$)의 값이 증가하는 순으로 배열하였다. 이들 도표들은 관계도에서 R2 < R1 < G2 < G1 < H2 < H1의 순을 보여준다. 즉, 상기 여섯 도표는 1번 결(R1+R2) < 2번 결(G1+G2) < 3번 결(H1+H2)의 순으로 요약될 수 있다. 이러한 결과는 미세균열의 간격과 관련된 결의 상대적인 강도를 지시한다. 특히 상기 주요 파라미터는 도표 사이의 배열 순서의 예측에 대한 사전 정보를 제공할 수 있다.

• 한국식생활문화학회지
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• 제20권1호
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• pp.61-67
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• 2005

The purpose of study was to determine the organoleptic characteristics of homemade basil-pasta made in various compounding ratio according to central composite design. The optimum mixing condition for basil-pasta was optimized by response surface methodology. The texture, including color, flavor, elasticity and overall quality, was measured as sensory evaluation. The optimum mixing rates of durum wheat semolina, basil and egg were 73.97g, 5.95g and 36.17g for color, 53.14g, 4.52g and 35.85g for flavor, 48.75g, 2.95g and 36.85g for elasticity. The organoleptic overall quality of basil-pasta showed the maximum score in the mixing condition of 55.52 g durum wheat semolina, 4.55g basil paste and 35.51g egg.

• Journal of Nutrition and Health
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• 제32권7호
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• pp.802-811
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• 1999

The purposes of this study were to 1) examine the dietary patterns of fatty acids and the fatty acid composition in serum, 2) determine selenium (Se) concentrations, and 3) investigate how serum fatty acid compositon affects serum levels of Se in Korean elementary school children. The subjects consisted of 168 school children(82 boys & 86 girls) belonging to 1st through 6th grades, and their dietary assessment was evaluated. The serum fatty acid composition was analyzed by GLC, and the ICP/MS method was employed to measure serum Se concentration. Total average intake of PUFA, MUFA and SFA were 10.5g, 12.7g, 11.2g respectively. Total average dietary P/M/S ratio was 1.10/1.18/1.0. The average intake of $\omega$3 fatty acids and $\omega$6 fatty acids were 1.33g, 9.19g, respectively. The $\omega$6/$\omega$3ratio was 14.2 which is higher than the recommended range. In serum fatty acid composition, PUFA, MUFA, SFA were 40.6%, 28.1% and 31.6% respectively. The average $\omega$3 fatty acid composition was 3.80%, and the mean value of $\omega$6 series was 36.8%. The M/S ratio of girls was significantly higher than boy's in fatty acids intake and in serum composition. Mean Se concentration of total subjects was 416.7ug/l and it was significantly higher in the lower grades(1st-3rd)than in the upper grades(4th~6th, p<0.05). Although the mean serum Se concentration was negatively correlated with PUFA composition in total boys and girls, it was not significant. Serum Se concentration was negatively correlated with P/S ratio and C24:1 concentration(p<0.05). In addition, serum composition of $\omega$6 PUFA and C24:1 showed negative correlations with serum Se in only lower grades girl(1st~3rd), and further studies are needed to clarify in these phenomena. In conclusion, the mean serum Se concentration was significantly lower in upper grades (4th~6th)than in lower grades(1st~3rd) of elementary school children and was negatively correlated with P/S ratio of serum fatty acids. More detailed studies on relationship between Se and fatty acids are required.

• 한국군사과학기술학회지
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• 제6권4호
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• pp.132-144
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• 2003

Numerical analysis of the spray angles of Dual swirl injector were investigated to obtain basic design data and to predict the combustion performance. Using the commercial thermal hydraulic program, discharge coefficients and spray angles were numerically analyzed with recess length, pressure drop, velocity ratio, mixture ratio and back hole length. Water was used as simulants for oxidizer and fuel, respectively to compare the experimental results. Swirl injectors were designed to inject oxidizer of 70.5g/s and fuel of 29.5g/s at the pressure drop of 1MPa and two recess lengths were considered. In addition, the effect of injector geometry coefficient and velocity ratio on the discharge coefficient was studied.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1998년도 하계학술대회 논문집 D
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• pp.1493-1494
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• 1998

We have investigated the influence of Ti/Ba mole ratio in the characteristics of the modified $BaTiO_3$ systems with Ca addition. The specimens were fabricated with variations in Ti/Ba mole ratio between 0.995 and 1.01, and sintered in the temperature range between $1325^{\circ}C$ and $1375^{\circ}C$. When Ti/Ba mole ratio was 1.005 and sintering temperature was $1350^{\circ}C$, the breakdown voltage shows 260[V /mm].

• 한국식품과학회지
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• 제53권5호
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• pp.527-534
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• 2021

The demand for sustainable extraction of bioactive compounds from food matrices has been increasing. Water extraction of anthocyanins in aronia was investigated using conventional and ultrasonic-assisted methods. The optimum extraction conditions for the conventional method included a sample-to-water ratio of 1:40 g/mL, extraction temperature 71℃, and extraction time of 39 min. The optimized conditions for ultrasonic-assisted extraction were a sample-to-water ratio of 1:40 g/mL, extraction temperature 80℃, extraction time of 20 min, and an amplitude of 87.2 ㎛. The anthocyanin contents of the two extracts were 155.32 and 158.02 mg/100 g fresh weight, respectively. The major anthocyanins were cyanidin 3-galactoside (65% of the total) and cyanidin 3-arabinoside (30% of the total). The contents of individual anthocyanins and phenolic acids were not significantly different between the two optimized extracts.

• 한국정보과학회논문지:시스템및이론
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• 제34권5_6호
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• pp.187-194
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• 2007

Local alignment 알고리즘은 두 문자열을 비교하여 크기가 l, 유사도 점수가 s인 부분 문자열쌍을 찾는다. 크기가 충분히 크고 유사도 점수도 높은 부분 문자열 쌍을 찾기 위해 단위 길이당 유사도 점수 s/l을 최대화하는 정규화 방법이 제안되어있다. 본 논문에서는 증가함수 f, g를 도입하여 f(s)/g(l)을 최대화하는, 함수에 의한 정규화 방법을 제시한다. 여기서 함수 f, g는 DNA 서열을 비교하는 실험을 통해 정한다. 이러한 실험에서 함수에 의한 정규화 방법이 좋은 local alignment를 찾는다. 또한 유사도 점수의 기준으로 longest common subsequence를 채택한 경우, 기존의 정규화 알고리즘을 이용하면 별다른 시간 손실 없이 함수에 의해 정규화된 점수 f(s)/g(l)을 최대화 할 수 있음을 보인다.

• 유기물자원화
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• 제14권2호
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• pp.63-70
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• 2006

본 연구에서는 폐기물매립지의 안정화 정도를 용이하게 평가하기 위하여 매립폐기물의 분해정도를 수치화 할 수 있는 매립지의 안정화 지수 개발을 목적으로 하였다. 안정화 지수를 개발하기 위하여 50개소의 사용종료 매립지를 대상으로 침출수 수질, 매립가스 조성, 매립폐기물의 물리화학적 특성 자료를 수집하여 이들의 매립연령별 환경특성을 고찰하였다. 그리고 이들 환경지표중 폐기물매립지의 안정화와 상관도가 높은세부 환경지표로서 침출수의 BOD/CODcr, 발생가스중의 $CH_4$농도, 매립폐기물의 C/N가 안정화 지표로 선정하였다. 각 지표에 대한 매립연령별 추세선을 이용하여 지수화한 결과 매립지 안정화 지수로 다음과 같은 식을 얻을 수 있었다. $$I_{LS}=S_L+S_G+S_W$$ $$S_L=-\{4.892+16.587{\cdot}ln[BOD/COD_{Cr]\}$$ $$S_G=53.872-12.782{\cdot}ln[CH_4]$$ $$S_W=79.382-20.013{\cdot}ln[C/N]$$ (단, $S_L$, $S_G$, and $S_W$는 각각 33.3점이 최대값이다.) 여기서, $I_{LS}$ : 매립지 안정화 지수 $S_L$ : 침출수의 안정화 점수 $S_G$ : 매립가스의 안정화 점수 $S_W$ : 폐기물의 안정화 점수.

• 한국경영과학회지
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• 제39권4호
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• pp.33-49
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• 2014

This study empirically examines the impact of firms' environmental (E), social (S), and governancial (G) factors on their short-term and long-term values. To measure firms' non-financial performance, we use ESG performance grades published by KCGS (Korea Corporate Governance Service). We employ stock log return as the proxy of each firm's short-term value, and Tobin's Q ratio as that of its long-term value. From a series of regression analyses, we find each of the ESG factors generally has a negative impact on stock return while it has a positive impact on the Tobin's Q ratio. These results imply that firms' effort for enhancing their non-financial performance may adversely affect their financial performance in a short term; but in the long-term point of view, firms' values increase through their good images engraved by their respective social, environmental and governancial efforts. In addition, we compare the relative strength of impact among E, S, G, the three non-financial factors on the firms' value measured in Tobin's Q ratio, and find that S (social factor) and G (governancial factor) give statistically significant impact on the firms' value respectively. This result tells us it would be advised to strategically embed CSV (creating shared value) pursuing both of profits and social responsibility in the firms' future agenda. While E (environmental factor) is shown to be an insignificant factor for the firms' value, it should be emphasized as a major concern by all the stakeholders in order to form a sound business ecosystem.

• Journal of Nutrition and Health
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• 제27권7호
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• pp.687-698
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• 1994

The effects of age and dietary fatty acid composition on lipid metabolism were investigated in Sprague-Dawley strain male rats. These animals weighing 88.6$\pm$2.2g were fed 10% dietary fat(W/W, 20% of total energy) with 0.5, 1, 2 P/S ratio and in each P/S ratio there were three different levels of n-6/n-3 fatty acid ratio ; 2, 4, 8. The experimental period was 1 month, 6 months and 12 months. The results of this study were as follows. The body weight of rats increased rapidly for the first two months, then increased slowly until 7 to 8 months. After 10 months of dietary regimen their weight decreased. The weight of liver, kidney and epidydimal fat pad increased along with the body weight and then decreased in the 12 months. Plasma total lipid increased with age and it decreased significantly when P/S ratio of dietary fatty acid was high. In creased with age and it decreased significantly when P/S ratio of dietary fatty acid was high. In creasing n-3 fatty acid intake in each P/S ratio resulted in lower plasma total lipid although was not statistically significant. The amount of plasma total cholesterol increased at 6 months, but decreased at 12 months. In case of 1, 12 months, increasing P/S ratio significantly plasma total cholesterol and LDL-cholesterol were decreased and hepatic cholesterol was increased, VLDL-HDL-cholesterol did not changed. The n-6/n-3 ratio did not affect any of theses. The amount of plasma triglyceride and VLDL-triglyceride increased at 6 month then decreased. When the rats consumed higher amount of n-3 fatty acid in each P/S ratio, their plasma triglyceride and hepatic triglyceride increased at 1, 12months.