• Economic and Environmental Geology
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• v.23 no.4
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• pp.425-452
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• 1990

A tentative hydrogeologic and hydrodispersive study was carried out to evaluate the groundwater pollution potential at a selected site by utilizing empirical assessment methodologies in an advanced stage of quantitative computer aided assessment. The upper most aquifer is defind as saturated overburden and weathered zone including the upper part of highly fractured rock. Representative hydraulic conductivity and storativity of the uppermost aquifer are estimated at 2.88 E-6 m/s and 0.09, respectively. Also calculated Darcian and average linear velocity of groundwater along the major pathway are 0.011 m/d and 0.12 m/d with average hydraulic gradient of 4.6% in the site. The results of empirical assessment methodologies indicate that 1) DRASTIC depicts that the site is situated on non-sensitive and non-vulnerable area. 2) Legrand numerical rating system shows that the probability of contamination and degree of acceptability are classed to "Maybe-Improbable, and Probable Acceptable and Marginally Unacceptable" with situation grade of "B". 3)Waste soil-site interaction matrix assessment categorizes that the study site is located on "Class-8 Site".

• The Journal of the Petrological Society of Korea
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• v.22 no.1
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• pp.35-47
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• 2013

The Baegdusan Volcano which erupted violently at 1000 AD is still have possibility of eruption. Therefore, it is necessary to monitor regularly the possibility of eruption. However, it is very difficult to install regular monitoring system or to get regularly monitored data due to geopolitic problems. This is why we have to develop regular monitoring technique using satellite. The geoid in the Baegdusan Volcanic area calculated from gravity data obtained from GRACE satellite, decreased from 2002 to 2005. The period of decreasing is well matched with time when magma activities were recognized in the Baegdusan Volcanic area. The decrease in geoid is interpreted to be caused by the decrease of water storage. Considering that the amount of rainfall from 2002 and 2005 is almost constant, the decrease in geoid may be related to the magma activity under the Baegdusan Volcano. The geomagnetic total force in the Baegdusan Volcanic area measured by CHAMP satellite, decreased from 2000 to 2005 and increased after 2005. The period of decrease is well matched with the time with increased activity of magma chamber under the Baegdusan Volcano indicating that the decrease of geomagnetic total force is caused by demagnetization of surrounding rocks due to the increase of temperature of magma chamber. These data indicate the possbility of using change of geoid and geomagnetic total force observed by GRACE and CHAMP satellites for the monitoring of magma activity under the Baegdusan Volcano.

• The Journal of the Korea Contents Association
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• v.18 no.1
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• pp.76-89
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• 2018

The purpose of this study is to analyze factors affecting a grade maintenance of long-term care service users. Using 2008-2014 long-term care raw data of National Health Insurance Service(NHIS), the predictors were examined through the logistic regression by long-term care beneficiaries of grade. The results showed that there are differences by 3 factor groups and grade groups(1-3 grade). In socio-demographic factors, in the 1, 3 grade, Individuals 64 or younger presented a much higher probabilities of the grade maintenance than those 85 and over. In the 3 grade, people of living alone, resident of rural area presented a much higher probabilities of the grade maintenance than others. In disease factors, In the 1 grade, people with dementia presented a much higher probabilities of the grade maintenance than other 2, 3grades. In the 2 grade, people with stroke, fracture presented a much higher probabilities of the grade maintenance than others. In the 3 grade, people with cancer presented a much higher probabilities of the grade maintenance than others. In service factors, In the 2, 3grade, people having more renewal numbers presented a much higher probabilities of the grade maintenance than others. In the 1 grade, people who use facility benefits for more days presented a much higher probabilities of the grade maintenance than others. In the 2 grade, people who use in-home benefits for more days presented a much higher probabilities of the grade maintenance than others. Based on the finding of study, implications and future research directions were discussed for policy considerations.

• Journal of Convergence for Information Technology
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• v.10 no.8
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• pp.87-98
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• 2020

This study was conducted to identify anxiety, knowledge, possibility of infection, possibility of prevention and performance level for infection prevention among the general public according to the spread of COVID-19. Data were collected from 208 adults in their 20s and 50s from April 6th to 10th in 2020 using questionnaire. Characteristics relative to variables were measured, and analyzed using SPSS 23.0 program for technical statistics, t-test, ANOVA, and correlation. The anxiety level differed according to gender, age, marital status, and live-in partner. The Knowledge score was significantly different according to age and marital status. Possibility of infection was significantly different according to age and residential area. Performance level for infection prevention was significantly different according to gender, age, marital status, and live-in partner. However, preventive possibility was not significantly different regardless of characteristics. These findings may have implications for establishing policies that work well in preventing infectious disease. It is necessary to conduct further research comparing responses of subjects by the stages of infectious disease outbreaks. Further extended studies that include more regions and larger sample sizes are required.

• Korean Journal of Soil Science and Fertilizer
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• v.40 no.1
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• pp.43-50
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• 2007

Veterinary antibiotics have been widely used to increase feed efficiency, to prevent disease, and to promote growth as well as to control disease. The antibiotics administered can be excreted through the urine and feces. One of the major routes of veterinary antibiotics entering soil and water environment is via the application of animal manure to agricultural land as an organic fertilizer source. Since little is known about impacts of antibiotics on the environment, this study was conducted to prioritize the veterinary antibiotics based on the consumption and potential to reach the environment. Among 83 veterinary antibiotics consumed in Korea, ten antibiotics were used at the greater dose than 25 Mg in 2004. Potential to reach the environment was determined according to excretion rate after administered to animals and sorption affinity to soil solids after applied to agricultural land. Seventeen antibiotic active ingredients (Ais) were classified as 'High' priority in terms of the potential to reach the environment. An overall priority score was determined by combining priority score based on consumption with the degree of potential environment exposure. Twenty veterinary antibiotic AIs were classified as 'Very high' or 'High' priority requiring detailed assessment. The antibiotic AIs were identified four aminoglycosides, two macrolides, two penicillins, five sulfonamides, three tetracyclines, two quinolones, and two miscellaneous. Eight veterinary antibiotic AIs including amoxicillin, carbadox, chlortetracycline, neomycin, oxytetracycline, sulfamethazine, sulfathiazole, and tylosin were identified to have a greater priority of environmental risk in Korea.

• Nuclear industry
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• v.15 no.4 s.146
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• pp.76-82
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• 1995

원자력발전소는 설계$\cdot$제작$\cdot$건설$\cdot$운전 등 전 단계에 걸쳐 철저한 안전성 확인과 안전을 최우선적으로 인식하는 원자력안전문화의 확산 등을 통하여 사고의 가능성을 최소화해 나가는 것이 무엇보다도 중요하다고 하겠다. 그리고 비록 발생 가능성은 희박하지만 사고의 잠재성에 따라 피해를 최소화하기 위한 방사능방지대책을 미리 강구하여, 사고가 발생하였을 경우 신속하고 총체적인 대응능력을 발휘하여 인근주민과 환경을 보호해야 할 것이다.

• Korean Journal of Logic
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• v.7 no.1
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• pp.23-40
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• 2004

실체 유물론과 인과 결정론이 개인의 자유와 동일성을 실질적으로 열어주려면 사건 원인 외에 행위자 원인의 여지를 허용해야 한다. 그 두 가지 원인은 법칙적 일반적 결정의 개념과 합리적 개성적 결정의 개념을 지니고 있다. 개성의 인과적 역할은 법칙화할 수 없는 물질성의 여지를 남긴다. 바로 그 가능성이 인간의 자유와 동일성의 실질적 복권의 가능성이다.

• Landscaping Tree
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• v.80 no.5_6
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• pp.21-26
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• 2004

인류문명이 고도의 산업사회로 접어들면서 도시의 성장은 팽창을 거듭하여 더 많은 인구를 수용하고 더 넓은 면적을 차지하는 경향은 지금도 변함없이 진행되고 있다. 따라서 도시의 팽창은 그 만큼의 자연을 잠식하는 당연한 결과를 가져오고 인구 또한 생활터전을 찾아 도시로 집중하게 되어 자연과는 접할 수 있는 기회가 점점 멀어지고 있다. (중략)

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2011.11a
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• pp.113-115
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• 2011

플로팅 건축물이 지어지는 수상은 풍력 자원이 풍부한 것으로 알려져 있다. 건축물에서 풍자원을 활용하기 위한 건축설계적인 노력이 부족한 실정이다. 이 연구에서는 플로팅건축물의 지붕 형태에 대한 수치해석을 통하여 풍력 활용 가능성을 검토하였다.

• Proceedings of the Korean Association for Survey Research Conference
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• 2000.11a
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• pp.213-227
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• 2000

이동전화의 급격한 보급으로 인하여 기존의 전화 포괄성이 변화하고 있으며, 이러한 변화의 추세를 감안하여 전화조사에서 이동전화 프레임을 함께 고려함이 바람직할 것이다. 이러한 측면에서 국내의 전화 포괄성과 이동전화 보급률을 고찰하고, 전화조사의 부분적인 대안으로 이동전화의 대체 가능성을 모색하였다.