• Journal of Korean Society of Transportation
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• v.27 no.3
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• pp.7-16
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• 2009

Because the transport policy of Korea has overemphasized road, the physical distribution function of railroad has dwindled a great deal relatively. Recently, the railway has started to be embossed due to the rise of oil prices and environment problems, in addition the government is investing greatly in railroad. The railway corporation took a big step in its history in changing to a public corporation in 2005, and it has been making every possible endeavor to improve management. This research analyzed the trend and stability of the efficiency of railway container handling goods station in korea from 2002 to 2007 based on time of after being changed to a public corporation in 2005 in order to look into the trend of efficiency. The DEA- AR(Data Envelopment Analysis-Assurance Region) and the DEA-Window, widely used as the estimation techniques of the efficiency, were used. According to the results, the efficiency was a little enhanced in 2003 in comparison with 2002, after which it continuously decreased up to 2006 and again rose in 2007. The efficiency of the railway corporation was 0.6777, but after changing to a public corporation, it showed a trend of better efficiency after some transition period had passed.

• Proceedings of the Korea Water Resources Association Conference
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• 2006.05a
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• pp.1362-1366
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• 2006

우리나라에서는 하천법 제11조에 의거하여 10년마다 한 번씩 수자원장기종합계획을 수립하고 있으며, 필요에 따라 5년마다 이를 수정 보완하고 있다. 2001년 7월 수자원장기종합계획(Water Vision 2020)이 수립된 이후 잦은 봄 가뭄 등 이수측면에서의 사회, 경제, 환경의 변화와 최근 이상홍수 등으로 인한 대규모 홍수피해 발생에 따른 치수측면의 종합적인 대책의 제시가 요구되면서 2001년 수립된 계획에 대한 보완 필요성이 제기되었다. 또한 수자원계획의 신뢰성에 대한 시민단체 등의 문제제기와 지역 차원의 수자원계획 및 수자원환경에 대한 국민적 관심 증대로 인해 계획 수립 과정과 결과에 대한 국민적인 공감대 형성을 위한 체제의 구축이 금번 보완 계획의 수립을 통해 추진되고 있다. 금번 수자원장기종합계획 보완은 투명성 확보라는 큰 목표를 가지고 수행되고 있으며, 이를 통해 국가 수자원 관리의 청사진을 제시하고 물 수급 전망 및 용수수급 계획을 수립하는 과정에 있다. 기 개발된 한국형 통합수자원평가계획 모형인 K-WEAP 모형을 보완 계획 수립 과정에서 활용하고 있으며, K-WEAP 모형을 통해 물 수지 분석을 수행하여 수급 균형을 판단함으로써 일반 대중에게 물 수급 관련 상황에 대한 이해력을 높일 수 있다는 장점을 확보할 수 있다. 본 연구에서는 K-WEAP 모형을 이용하여 각 권역별로 2003년의 물 수급 현황을 분석하여 이를 하천의 관측유량과 비교해봄으로써 모형의 검증을 수행하였으며, 각 권역에서 시나리오별로 추정된 용수수요량을 이용하여 물 수지 분석을 수행함으로써 목표연도별 물 수급 분석결과를 제시하였다. 물 수급 분석 시 지하수 및 농업용 저수지 등 하천과 다목적댐 이외의 지역 공급원에 대해서도 고려하였으며, 이를 통해 수자원계획 수립 시 도움이 될 수 있는 기초적인 자료를 제공할 수 있었다. 인공순환에 의한 저감효과가 크지는 않을 것으로 예측된다. 조사 기간중 H호의 현존 식물플랑크톤량의 $60%{\sim}87%$가 수심 10m 이내에 분포하였고, 녹조강과 남조강이 우점하는 하절기에는 5m 이내에 주로 분포하였다. 취수탑 지점의 수심이 연중 $25{\sim}35m$를 유지하는 H호의 경우 간헐식 폭기장치를 가동하는 기간은 물론 그 외 기간에도 취수구의 심도를 표층 10m 이하로 유지 할 경우 전체 조류 유입량을 60% 이상 저감할 수 있을 것으로 조사되었다.심볼 및 색채 디자인 등의 작업이 수반되어야 하며, 이들을 고려한 인터넷용 GIS기본도를 신규 제작한다. 상습침수지구와 관련된 각종 GIS데이타와 각 기관이 보유하고 있는 공공정보 가운데 공간정보와 연계되어야 하는 자료를 인터넷 GIS를 이용하여 효율적으로 관리하기 위해서는 단계별 구축전략이 필요하다. 따라서 본 논문에서는 인터넷 GIS를 이용하여 상습침수구역관련 정보를 검색, 처리 및 분석할 수 있는 상습침수 구역 종합정보화 시스템을 구축토록 하였다.N, 항목에서 보 상류가 높게 나타났으나, 철거되지 않은 검전보나 안양대교보에 비해 그 차이가 크지 않은 것으로 나타났다.의 기상변화가 자발성 기흉 발생에 영향을 미친다고 추론할 수 있었다. 향후 본 연구에서 추론된 기상변화와 기흉 발생과의 인과관계를 확인하고 좀 더 구체화하기 위한 연구가 필요할 것이다.게 이루어질 수 있을 것으로 기대된다.는 초과수익률이 상승하지만, 이후로는 감소하므로, 반전거래전략을 활용하는 경우 주식투자기간은 24개월이하의 중단기가 적합함을 발견하였다. 이상의 행태적 측면과 투자성과측면의 실증결과를 통하여 한국주식시장에 있어서 시장수익률을 평균적으로 초과할 수 있는 거래전략은 존재하므로 이러한 전략을 개발 및 활용할 수 있으며, 특히, 한국주

• Korean journal of communication and information
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• v.35
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• pp.329-361
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• 2006

This study focuses those periods of Kim Young-Sam and Kim Dae-Jung administration. This study tries to analyze any change in terms of ideological tendency and report attitude on the assessment of the government policy in the Korean newspapers from Kim Young-Sam to Kim Dae-Jung administration. Although these two civilian regimes were born after long periods of military dictatorship, there are many distinguished differences dividing these two. Kim Young-Sam could succeed through joining with the establishment of the power, while Kim Dae-Jung was elected as President through the horizontal shift of the power, opposition party becoming ruling party. Their power base was different. Another big difference is their North Korea policy. Kim Young-Sam administration's policy was conservative, while Kim Dae-Jung administration's policy was liberal. This study selected four Korean newspapers that represent each aspect of ideological spectrum in Korean media, and focused on the editorials of each paper as major analysis base. The four papers are Dong-a Ilbo, Chosun Ilbo, JoongAng Ilbo, and Hankyoreh. The study concludes that in terms of the report attitude on the assessment of the government policy, Dong-a, Chosun, JoongAng were more critical under Kim Dae-Jung administration than Kim Young-Sam administration. And Hankyoreh became more supportive of Kim Dae-Jung policy. In terms of the ideological tendency, four newspapers altogether did not change their ideological color regardless of the change in the administration. However conservative color became thinner( Dong-a, Chosun, JoongAng) and liberal color became thicker(Hankyoreh) a little under Kim Dae-Jung administration than Kim Young-Sam administration. Each newspaper tried to show their ideological tendency clearly in order to influence on government policy.

• Journal of Environmental Science International
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• v.20 no.7
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• pp.819-828
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• 2011

This research was done to clarify the cooling effect of water particles generated from a fountain. This effect is a one way to control the heat island effect of big cities. The result of this research was drawn by setting the jets of water in a certain height, and then studying the diffusion of water particles, which is affected by the size of the particles and the wind speed, and the cooling effect caused by the diffusion. 1) When a diameter of a water drop was 500 ${\mu}m$ and the wind speed was 2.0 to 6.0 m/sec, the water drop diffused 75 to 190m, and the water vapor spread over 175 to 440 m. As a result, there was more than $0.5^{\circ}C$ of cooling effect on the temperature in the atmosphere 130 to 330m around the water fountain. 2) When a diameter of a water drop was 750 ${\mu}m$ and the wind speed was 2.0 to 6.0 m/sec, the water drop diffused 65 to 150 m, and the water vapor spread over 160 to 405 m. Moreover, there was more than $0.5^{\circ}C$ of cooling effect on the temperature in the atmosphere 110 to 275 m around the water fountain. 3) After studying on the relationship between the diameter of water drop and the wind speed, and the diffusion of water particles and the range of the atmosphere that was cooled, a result could be drawn from the research that the smaller the diameter of the water vapor gets and the faster the wind speed becomes, the wider the water particles diffuse and the cooler the atmosphere around the fountain becomes. 4) This research further extrapolates that when the ordinary water(tap water, water from river and stream) is used in a fountain, the cooling effect of the air near the fountain can be approached similarly. If the seawater is used in a fountain, there is to be more to concern not only on cooling effect on the air, but also on other effects on surrounding environment generated by the salt in seawater.

• Korean Journal of Plant Resources
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• v.8 no.2
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• pp.189-193
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• 1995

A new paeony variety 'Euiseongjakyak' was developed by Gyeongbug Provincial Rural Development Administration in 1993. This variety was selected from pure lint selection. It is characterized by red flower of single type, deep white flesh colour, straight and big radixs. When compared with 'Punggi jerye' a check variety, it is more resistant to lodging, disease and insect injury, and outyielded by 32% in total radix and 17% in marketable radix during 3 years regional performance trials. In the radix, the content of starch and sugar was higher by $9.8\sim12.22%$, crude protein and ash was similar and fiber was lower by 1.17% compared to 'Punggi jerye'.

• Environmental Mutagens and Carcinogens
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• v.26 no.3
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• pp.63-68
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• 2006

There are $10{\sim}30%$ polyphenol and $2{\sim}4%$ caffeine in green tea. Caffeine is a kind of alkaloid containing nitrogen which cause stimulation, impatience, headache, insomnia, low birth weight infant. Because of these negative effect, decaffeined beverage came out and decaffeined coffee already have a big market since 1970s. Having proving the physiologic functions of green tea, high consumption of coffee is shifting to green tea. Because of the carcinogenic effect of the organic solvents, decaffeine processing with supercritical carbon dioxide has industrialized and have an advantage in environment-friendly and minimized flavor loss. Decaffeined green tea using supercritical carbon dioxide is considered to be safe but there are not enough study, We investigated the chromosome aberration test with mammalian cell line, CHL. When the cells were treated with 5000, 2000, 1000 ${\mu}g/ml$ and compared with the negative controls, there were no significant (P>0.05) increased chromosome aberration. Same results was observed when adding S9 mixture or not. As a result, water extract of decaffeined green tea using supercritical carbon dioxide does not induce chromosome aberration.

• 대한공업교육학회지
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• v.40 no.1
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• pp.40-63
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• 2015

The purpose of this research is to identify internal and external factors that affect specialized technical high school students' career decision status. It then uses career decision types to predict the variables which have the impact on emotional aspects of specialized technical high school student who feel comfortable or uncomfortable after career decision in order to help specialized technical high school students choose their career. The subject of this study consist a total of 809 male and female students attending specialized technical high school located in South Korea. Data were analyzed to investigate the types of career decision status of specialized technical high school students using the SPSS 21.0 program. The results obtained through the study were as follows. Types of career decision status of specialized technical high school students were divided into four groups based on career decision status and types of emotional state. Results showed the decision-comfort(51.3%), decision-discomfort(25.6%), indecision- discomfort(15.3%), indecision-comfort(1.3%) in order. Social support were selected as variables affecting the comfort and discomfort of two groups and the determining factor which distinguished four groups. Result of the analysis showed that social support has statistically significant impact on whether it was decision or not and comfort or not. But career decision-making self-efficacy has no big impact on career decision types. Taking all results of this study together, we can see that specialized technical high school students feel comfortable and they decide the career, but still many students feel uncomfortable on their decision after deciding their career. It suggests the need of development and operation of program about emotional status of career decision which can help specialized technical high school students prepare their career comfortably after they decide on the career, and the need of segmented career counseling approach including social support group.

• Korea Multimedia Society
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• v.9 no.3_4
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• pp.27-35
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• 2005

The technologies related to the development of cultural contents we known as cultural technology (CT). CT should evolve with the changes in the cultural contents market. Currently there are five major trends in cultural market change. First, consumers are seeking more and more sensible quality from products. Second, consumers are becoming less sensitive to the cognitive quality of products. Third, consumers demand more than what contemporary technology can offer. Fourth, as the cultural products market grows, the goal of content developments has shifted from producing a 'big hit product' to producing a product which will maintain market share. Fifth, cultural products are diversifying. All these trends make the cultural products developer's job more challenging. Sensation & emotional engineering (SE engineering) can be a useful tool for cultural products developers. SE engineering is a study of the somatic sensation and the aesthetic sensation for both fundamentals and applications aspects. By quantifying the physiological and psychological responses of consumers, it studies the physical nature of stimulants, providing basic knowledge for future applications and industrialization. One widely spread myth is that a sparkling idea from a talented individual will make a difference in the cultural products industry. The careful examinations of many successful cultural products prove this is not correct. Many successful cultural products are the result of a substantial amount of investment and employment of well polished marketing technology. A scientific approach is highly required for this matter and the SE engineering is an answer

• Korean Journal of Oriental Medicine
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• v.12 no.3 s.18
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• pp.101-115
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• 2006

The purpose of this study was to introduce the differential standard of the types of Angelicae Pubescentis Radix. We established the classificatory standard according to the external and internal morphology and the physicochemistrical pattern for the four types of Aucklandiae Radix. The results follow: 1. At the external shape, Angelica pubescens f. biserrata has rising lenticel and dark brown surface, Its section is light gray and its xylem is yellow gray. Aralia continentalis has big stem mark in upper portion, its section has no dense tissue with yellow gray. Heracleum hemsleyanum has dark brown surface and little lenticel, its cortical layer is white yellow and xylem is isabella and powdered. 2. At the internal shape, Angelica pubescens f. biserrata has phloem with half of the root and rare vessel. Aralia continentalis has phloem with two-thirds of the root and it has broad cutting and putting vessel that formed 1-2 row. Heracleum hemsleyanum also has phloem with half of the root and wide scattered latex tube and many large vessel. 3. At the TLC pattern, Heracleum hemsleyanum has remarkable dark spot at $R_{f}$ 0.23 on the sulphuric acid color pattern test, but others have faint. 4. At the HPLC pattern, all samples have generally patterns. But Angelica pubescens f. biserrata shows diminutive continentalic acid content and the peak at Rt 20.278min comes out on Heracleum hemsleyanum, but do not come out on Aralia continentalis and Angelica pubescens f. biserrata. Heracleum hemsleyanum has remarkable peak at Rt 20.278min, but shows no peak at Rt 29.023min unlike Aralia continentalis or Angelica pubescens f. biserrata. Also Aralia continentalis and Angelica pubescens f. biserrata show one remarkable peak at Rt 29.023, but Heracleum hemsleyanum do not show. Consequently, Aralia continentalis and Angelica pubescens f. biserrata are comparable whit continentalic acid content and Heracleum hemsleyanum is comparable with the peak at Rt 20.273 and Rt 29.023. So it is thought that content of continentalic acid and the peaks at Rt 20.278 and Rt 29.023 can apply to differentiate a species from other. It is considered the results of this study will be furnished the basis to succeeding studies and it is needed to extensive comparative study for the same genus-degree of relatedness.

• Journal of the Korea Organic Resources Recycling Association
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• v.6 no.1
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• pp.53-66
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• 1998

This study was carried out to investigate the typical composition of food waste from municipal solid wastes (MSW) and unit food waste generation rates from different sources in the model cities and to study the food waste management system from unit household to composting facilities. The annual average food waste composition of MSW was determined as 49% in Taejon and 52% in Chungnam Province, respectively. No big difference in food waste composition was found among the different sources. Since the paper waste generally occupied the half of food waste, over 75% of MSW was found to be compostable or biodegradable. Per capita food waste generation rate, 200~250g/capita day was determined by the direct measurement from 32 households, while 380g/capita day for Chungnam Province and 400 g/capita day for Taejon were estimated by the load count analysis In the sanitary landfills. This difference means people contribute generating food waste at outside house approximately twice as much as that at inside house. Per capita food waste generation rates from several sources were determined as follows; 166~215g/capita day at municipalities, 400g/visitor day at a first class hotel, 170g/student day at a university restaurant. Food waste generation from restaurant was strongly dependant upon it's level or quality; 670g/capita day at the high level restaurant, 190g/capita day at the middle class and 60 g/capita day at the lower class restaurant. The food waste reduction rate in a In situ fermentor showed 30~40g/kg day.