• Title/Summary/Keyword: 주요 변화

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A study on Design and Evaluation of The Continuous Flow Intersection (연속교차로의 설계 및 평가에 관한 연구)

  • 박창수
    • Journal of Korean Society of Transportation
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    • v.17 no.5
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    • pp.79-86
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    • 1999
  • Traffic jams of our country are due to the shortage of roadway as compared with the traffic, however. they are sometimes due to inconsistency of the roadway capacity. Inconsistency of the roadway capacity comes from the difference of cycle length, phase length and number of Phase between major intersection and minor intersection. Specialty increasing number of Phase due to left-turn movements bring out decrease of the arterial capacity, deterioration of the arterial offset. The Purpose of this research is to introduce and analyze the continuous flow intersection to solve the bottleneck of the major intersection. The major contents of this research introduce the concept and design consideration for the continuous flow intersection and also analyze delay, fuel consumption and emissions among multiphase intersection, grade separated intersection and continuous flow intersection. This research analyze the sensitivities according to change of the left-turn traffic volume and also evaluate the cost-effectiveness through the total cost analysis among three of them.

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Generation of Corporate risk Contents using Financial Data (국제경쟁력 강화를 위한 중소규모기업 부실예측 콘텐츠)

  • Kim, Young-Sook
    • Proceedings of the Korea Contents Association Conference
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    • 2007.11a
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    • pp.951-953
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    • 2007
  • Generation of Corporate risk Contents using Financial Data The purpose of this paper is to capture risk profiles of smaller-sized Korean firms vis-$\grave{a}$-vis larger-sized firms during the Asian financial crisis. For this purpose, risk profiles are provided by estimating expected default risks and by tracking how these have changed during this period with respect to their magnitude, volatility, and sensitivity measures. Methodology used in this study employs the Black-Scholes-Merton model for producing estimates of default risks. And the conventional trans-log function is utilized for obtaining sensitivity measures of the estimated default risks. According to empirical evidence obtained here, it is revealed that contractions of corporate loans associated with IMF austerity policy was the main factor responsible for the drastic change in the default risk profile of Korean firms after occurrence of the Asian financial crisis.

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Changes of Fatty acids and Free Amino Acids in Raw and Salted-dried Red Tongue Sole During Cooking (생.건 참서대의 조리방법별 지방산과 유리아미노산 함량변화)

  • 신애숙;홍정훈;김경자
    • Korean journal of food and cookery science
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    • v.14 no.5
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    • pp.535-540
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    • 1998
  • Changes in fatty acids and free amino acids of raw .ed tongue sole (RRT) and dried red tongue sole (SRT). were analyzed after steaming, boiling, or baking. 1. RRT was composed of moisture 78.4%, ash 1.2%, crude lipid 1.1%, and crude protein 18.3%. 2. The main fatty acid of RRT and SRT were palmitic acid (21.5%) and lignoceric acid (43.1%) which cover 64.5% of total fatty acid. Steamed RRT or SRT had higher content of fatty acids than boiled or baked ones. 3. The main free amino acids of RRT or SRT were glutamic acid (14.9%), aspartic acid (12.2%), Iysine (10%), leucine (8.4%), and arginine (6.8%) covering more than 52.3% of total free amino acids.

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Spatio-temporal Evaluation of Air Temperature-Water Quality Elasticity in Tributary Streams According To Climate Change (기후변화에 따른 지류 하천의 시공간적 기온-수질 탄성도 영향 평가)

  • Park, Jaebeom;Kal, Byungseok;Kim, Seongmin
    • Journal of Wetlands Research
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    • v.23 no.4
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    • pp.296-306
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    • 2021
  • Elasticity is a statistical technique that interprets the changing pattern of another variable according to a change in one variable as a quantitative numerical value and provides more information than correlation analysis and is widely used in climate change research. In this study the elasticity was calculated and sensitivity analysis was performed using air temperature and water quality data of the major tributaries of the Nakdong River. In addition the confidence interval for the elasticity was calculated using the T-Test and the validity of the elasticity was examined. The strength of elasticity shows high strength in the order of summer>fall>spring>winter and the direction shows regional characteristics with both negative and positive elasticity. After performing hierarchical cluster analysis on monthly observation data they were classified into 5 clusters and the characteristics of each cluster were visually analyzed using a parallel coordinate graph. The direction and intensity of the air temperature elasticity show regional characteristics due to the relatively high population density and complex influencing factors such as sewage treatment plants, small-scale livestock houses and agricultural activities. In the case of TP it shows great regional variability according to the circulation of nutrients in the ecosystem caused by algae growth and death according to temperature changes. Since the air temperature elasticity of the major tributaries of the Nakdong River is over weak and is valid at the significance level of 5%, it was analyzed that there is a change in water quality according to the air temperature change.