• 천문학회보
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• 제40권1호
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• pp.57.3-57.3
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• 2015

We present a test observation result of the KMTNet Intensive Nearby Southern Galaxy group Survey (KINGS). The KINGS is designed to study nearby galaxy groups (NGC 55, NGC 253, NGC 5128, and M83 groups), taking the advantage of the wide field coverage of the KMTNet. The main goal of the KINGS is to produce extensive catalogs of dwarf galaxies, ultra compact dwarfs (UCDs), and intraglobular clusters in the galaxy groups. We will also investigate the spatial distribution of intragroup light in each group. We present a progress report of the project based on the test BVI observations of two galaxy groups. We discuss the result from the test observation and possible improvement for future observations.

• 대기
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• 제31권4호
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• pp.421-431
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• 2021

The Yeongdong region is frequently vulnerable to heavy snowfall in winter in terms of societal and economical damages. By virtue of a lot of previous efforts, snowfall forecast has been significantly improved, but the performance of light snowfall forecast is still poor since it is very conducive to synoptic and mesoscale interactions, largely attributable to Taeback mountains and East Sea effects. An intensive observation has been made in cooperation with Gangwon Regional Meteorological Office and National Institute of Meteorological Studies in winter seasons since 2019. Two distinctive Cold Air Damming (CAD) events (14 February 2019 and 6 February 2020) were observed for two years when the snowfall forecast was wrong specifically in its location and timing. For two CAD events, lower-level temperature below 2 km ranged to lowest limit in comparisons to those of the previous 6-years (2014~2019) rawinsonde soundings, along with the stronger inversion strength (> 2.0℃) and thicker inversion depth (> 700 m). Further, the northwesterly was predominant within the CAD layer, whereas the weak easterly wind was exhibited above the CAD layer. For the CAD events, strong cold air accumulation along the east side of Taeback Mountains appeared to prevent snow cloud and convergence zone from penetrating into the Yeongdong region. We need to investigate the influence of CAD on snowfall in the Yeongdong region using continuous intensive observation and modeling studies altogether. In addition, the effect of synoptic and mesoscale interactions on snowfall, such as nighttime drainage wind and land breeze, should be also examined.

• 한국전자통신학회논문지
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• 제16권3호
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• pp.429-436
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• 2021

기상청에서 운용 중인 윈드프로파일러는 저층을 집중 관측하는 저층 모드와 고층을 집중 관측하는 고층 모드로 나누어 관측한다. 북강릉과 창원에 설치된 LAP-3000 윈드프로파일러는 저층 모드와 고층 모드의 샘플링 주파수를 동일하게 설정한 것이 특징으로, 동일한 고도에서 두 모드로 관측한 바람을 비교해볼 수 있다. 두 지점의 2020년 1년 동안 풍속을 분석한 결과, 두 모드의 상관성이 라디오존데와의 상관성보다 최대 0.2 낮았다. 두 모드의 풍속에 대한 T-test 수행 결과는 온위, 비습이 급변하는 구간 자주 나타나는 10월에 특히 유의미한 차이를 보였다. 대기경계층의 발달 차이는 관측 모드에 따라 풍속의 정확도에 영향을 미친다.

• 간호행정학회지
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• 제9권2호
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• pp.265-282
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• 2003

Purpose : This study was conducted to provide for a basic resource, which can be used to set up a efficient management system in Cardiac Surgery Intensive Care Units(CSICU). Method: 1) Questionnaires were administered and observation methods were used, to examine the nursing activities performed in the CSICU after having reviewed related literatures and a review by the experts. Thus, the nursing activities were designating 254 activities and classified into 28 categories. 2)The 22 nurses in the 2 CSICUs filled out questionnaires about nursing activities from 12 April, 2002 to 17 April, 2002. The frequency of the nursing activities in the 28 categories counted and new nursing activities added by directly observing 12 nurses by two trained research staffs for 4 day. 3)In terms of validity, the 264 nursing activities were analysed by the 25 experts. As a result, 231 nursing activities were found valid and remained as appropriate nursing activities to be used for the careful analysis of the nursing activities in CSICUs. Result: The 22 categories are as below: assessment, monitoring, respiration management, nutrition management, elimination/drainage management, mobility management, sanitation management, safety management, temperature management, specimens collection, preparation and assistance of treatment, skin/wound management, infection management, medication management, education/support, dying patient care, recording/keeping, supplies management, environment management, communications, evaluations, professional development Conclusion : The manifest job description of the staff nurse will contribute to improving the efficiency of the nursing activities and to reducing the role conflicts among the medical staffs.

• 대기
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• 제18권2호
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• pp.147-158
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• 2008

Domestic IOP (intensive observing period) has mostly been represented by the KEOP (Korea Enhanced Observing Period), which started the 5-yr second phase in 2006 after the first phase (2001-2005). During the first phase, the KEOP had focused on special observations (e.g., frontal systems, typhoons, etc.) around the Haenam supersite, while extended observations have been attempted from the second phase, e.g., mountain and downstream meteorology in 2006 and heavy rainfall in the mid-central region and marine meteorology in 2007. So far the KEOP has collected some useful data for severe weather systems in Korea, which are very important in understanding the development mechanisms of disastrous weather systems moving into or developing in Korea. In the future, intensive observations should be made for all characteristic weather systems in Korea including the easterly in the central-eastern coastal areas, the orographically-developed systems around mountains, the heavy snowfall in the western coastal areas, the upstream/downstream effect around major mountain ranges, and the heavy rainfall in the mid-central region. Enhancing observations over the seas around the Korean Peninsula is utmost important to improve forecast accuracy on the weather systems moving into Korea through the seas. Observations of sand dust storm in the domestic and the source regions are also essential. Such various IOPs should serve as important components of international field campaign such as THORPEX (THe Observing system Research and Predictability EXperiment) through active international collaborations.

• 근관절건강학회지
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• 제27권3호
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• pp.247-254
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• 2020

Purpose: This was a descriptive observational study examining the reasons for, frequency of, and factors affecting work interruption among intensive care unit (ICU) nurses. Methods: Convenience sampling was used to recruit 46 regular nurses who had been working in an ICU at D tertiary hospital in B metropolitan city for at least six months. To measure the degree of work interruption, this study revised a tool used by Brixey et al. (2007) for analyzing the type of work interruption. Results: A total of 1,787 work interruptions occurred during 368 hours of observation, i.e., at an average of 4.85 times per hour. Communication-related factors caused work interruption most frequently, followed by environmental, work-related, and personal factors. As for the work-related characteristics of nurses, participants experienced work interruption more frequently while working on weekdays, when the medical staff were stationed, than on weekends. Conclusion: ICU nurses experienced work interruption frequently. With the health care system expected to become more complicated in the future, efforts should be made to reduce unnecessary work interruptions to improve the operation efficiency of ICUs.

• Child Health Nursing Research
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• 제26권2호
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• pp.173-180
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• 2020

Purpose: The purpose of this study was to explore nursing students' recognition and understanding of the clinical environment of high-risk neonatal nursing care after watching a documentary about the neonatal intensive care unit (NICU), where high-risk newborns are treated. Methods: This study was a qualitative content analysis. In total, 151 nursing students' personal essays describing their reactions to a documentary about the NICU were analyzed using the NVivo 12 program. Results: Nursing students' experiences of engaging with a documentary about the NICU were structured into four thematic categories: 'actual observations of the imagined NICU', 'observation and recognition of nursing knowledge', 'empathy with people related to the baby', and 'establishing attitudes and values as a nurse'. Conclusion: Based on the results of this study, it is suggested that documentaries can be applied in nursing education about high-risk newborns.

• 한국해양공학회지
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• 제20권4호
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• pp.50-57
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• 2006

The effect of discharges from the Seomjin River on the dispersion of thermal effluent from the Hadong Power Plant, located along the south coast of Korea, was investigatedusing intensive field observation and three-dimensinal Princeton Ocean Model simulations. A POM and observed CTD data was used to predict the mixing behaviour of the Summer freshet, during the July 2005 intensive observing period. The dispersal of the river discharge anomaly, associated with the Seomjin River plume, was seen to be highly responsive to tidal currents and river flows during the spring tide.

• 대기
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• 제34권2호
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• pp.139-151
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• 2024

The Yeongdong region has suffered from severe snowstorms and the relevant damage such as traffic accidents on slippery roads, and the collapse of greenhouses and temporary buildings. While a lot of research on snowfall has been conducted, the detailed study of snow crystals' phase and habit through intensive observations and the relevant microphysical analysis is still lacking. Therefore, a snowflake camera, PARSIVEL, and intensive radiosonde soundings were utilized to investigate phase and habit changes in solid precipitation. Two remarkable episodes of phase and habit changes were selected such as 19 March 2022 and 15 February 2023. Both events occurred in the synoptic condition of the High in the north and the Low passing by the south, which was accompanied by rapid temperature cooling below 2.5 km. During the events of a short period between 3 to 6 hours, the temperature at 850 hPa decreased by about 4 to 6℃. This cooling led to a change in the main habit of snow particles from riming to aggregate, identified with both MASC and PARSIVEL. Meanwhile, the LDAPS model analyses do not successively represent the rapid cooling and short-term variations of solid precipitation, probably by virtue of overestimating low-level equivalent potential temperature during these periods. The underlying causes of these the low-level temperature variations within 6 hours, still remain unclear. It might be associated with mesoscale orographic phenomenon due to the mountains and East Sea effects, which certainly needs an intensive and comprehensive observation campaign.

• Applied Microscopy
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• 제27권4호
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• pp.453-460
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• 1997

주사 전자현미경상에서 Hypoxylon속 4종(H. archeri, H. bovei, H. fragiforme와 H. stygium)의 자낭자좌 조직 형태를 중점적으로 관찰하였다. 본 연구는 Hypoxylon속의 자낭자좌의 각 층의 조직상 형태를 가장 심도있게 연구하였으며, 이 자낭자좌들은 동결파쇄법에 의하여 종단 및 횡단 절단되었다. 여러 개의 균일 된 자낭자좌 조직의 형태가 속내의 종간에 각기 다르게 형성되었다. 자낭자좌 조직의 형태는 Hypoxylon속의 종 수준에서의 분리동정을 위한 주검색 표로서는 미흡하나 보조 검색 표로는 매우 유용하다.