• Proceedings of the Korean Radioactive Waste Society Conference
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• 2005.11a
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• pp.134-142
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• 2005

The experimental setups for flow visualization and processes identification in laboratory scale (so cal led Flow Lab.) has developed to get ideas and answer fundamental questions of flow and migration in geologic media. The setup was made of a granite block of $50{\times}50cm$ scale and a transparent acrylate plate. The tracers used in this experiments were tritiated water, anions, and sorbing cations as well as an organic dye, eosine, to visualize migration paths. The migration plumes were taken with a digital camera as a function of time and stored as digital images. A migration model was also developed to describe and identify the transport processes. Computer simulation was carried out not only for the hydraulic behavior such as distributions of pressure and flow vectors in the fracture but also for the migration plume and the elution curves.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 1993.10a
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• pp.143-145
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• 1993

• KDI Journal of Economic Policy
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• v.27 no.2
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• pp.155-203
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• 2005

This paper intends to provide information about whichgroups should receive particular attention from policies aimed at raising participation and employment. A detailed portrait of the diversity of non-employment is presented with description of the extent the under-represented groups stayed in situations of labor inactivity. Also, once in employment, how these groups move from one sector to another is a main interest in the analysis. Using longitudinal data (1998-2002) constructed from 'the economically active population survey', I followed individuals over a five-year period and analyzed how frequently inactive persons enter the labor market and how they change industries and statuses.

• Proceedings of the Korean Vacuum Society Conference
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• 2005.02a
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• pp.102-102
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• 2005

• Proceedings of the Korean Vacuum Society Conference
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• 2004.08a
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• pp.153-153
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• 2004

• Proceedings of the Korea Information Processing Society Conference
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• 2019.05a
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• pp.723-726
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• 2019

사람은 한 장소를 방문할 때 순환 패턴이 있으며, 이 패턴에 여러 싸이클의 경향이 있다. 요즘은 스마트폰 및 기타 휴대용 장치로 개인 이동성 데이터를 수집하는 것이 가능하다. 이러한 장치는 다양한 위치 데이터를 수집하고 여러가지 방법으로 분석할 수 있게 해준다. 위치 수집기를 기반으로 지구 위치 데이터에서 추출된 사람의 이동성 모델을 수립하고, 위치 클러스터를 방문자의 순환 패턴을 조사할 수 있다. 수년 동안 수집된 개인의 이동성 모델을 토대로 클러스터 재방문 시간을 계산 후 분석하여 그래프로 시각화하였다. 시간 순서의 위치 클러스터와 방문 클러스터에 대한 위치 데이터는 1 분 단위로 측정된다. 전체 데이터 방문 횟수는 15 분마다 정규화하고, 자원 봉사자의 다양한 지리적 위치 데이터 셋에 대해 방문의 순환 패턴은 자기 상관, 자기 공분산 및 재방문 시간으로 살펴볼 수 있다.

• Journal of Chest Surgery
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• v.21 no.5
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• pp.924-928
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• 1988

Diffuse esophageal spasm[DES] is a rare disease, and its surgical management is controversial. We experienced one case of diffuse esophageal spasm with a large epiphrenic diverticulum. We resected the diverticulum with right side approach and underwent extended esophageal myotomy from the apex of the chest to 3 cm above the diaphragm. And then we preserved the LES without antireflux procedure.

• Journal of Chest Surgery
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• v.21 no.5
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• pp.929-934
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• 1988

Progressive systemic sclerosis is a disease of unknown origin and uncommon in the east area. We experienced one case of severe peptic esophageal stricture due to esophageal scleroderma. The patient`s life quality was improved with the esophageal reconstructive procedure using reversed tubed gastric pedicle and his body weight was normalized with regular diet.

• Proceedings of the Korean Nuclear Society Conference
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• 1996.11b
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• pp.611-616
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• 1996

원자력 발전소에서 대기중으로 방출된 방사성 물질의 이동 양태는 지형과 기상조건에 의해 크게 좌우되므로, 해안가에 위치해 있는 월성부지의 경우는 빈번히 발생하는 해륙풍 특성을 규명하여 이에 적합한 환경영향평가 및 비상대응체제를 구축해야 한다. 월성부지의 해륙풍 순환구조를 파악하기 위해 봄철 해륙풍 상층기상 특별관측을 월성부지를 중심으로 4개 지점에서 실시하였다. 관측결과를 분석하여 해륙풍이 방사성 물질의 대기확산에 미치는 영향을 분석하고, 해륙풍을 반영할 수 있는 새로운 환경영향평가 방법론을 고찰하였다.

• Korean Journal of Ichthyology
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• v.3 no.1
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• pp.11-23
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• 1991

To study the distribution of inhthyoplankton in the adjacent water of Wolsong, samples were collected using Bongo net from the surface water in November of 1989, and February, May and July of 1990. Fish eggs were divided into Engrualis japonicus, Callionymidae, Maurolicus muelleri, Konosirus punctatus, and others. The dominant species of fish eggs were Maurolicus muelleri and Callionymidae accounting for 60.1% and 13.7% of the total egg abundance, respectively. Total of 21 taxa of fish larvae occurred. The predominant species was Engraulis japonicas accounting for 61.2% of the total lavae, and bollowed by Callionymidae(11.9%). Other major species were Maurolicus muelleri, Gobiidae sp., Ammodytes personatus, Sebastes inermis, S. Pachycephalus, Scartella cristata, and Sebastiscus marmoratus. These 9 taxa constituted 96.5% of the total larvae collected. In this area, where upwelling occasionally occurs the distribution of fish eggs and larvae appeared to be affected by the transport of the surface water during the upwelling period.