• Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
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• v.7 no.11
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• pp.525-536
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• 2017

Purpose: The aim of this study was to identify the factors influencing ICU (intensive care units) length of stay of adult patients with critical illness. Methods: This study was adopted descriptive design. 270 patients who were admitted to ICU in general hospital, Seoul were analyzed. Results: A total of 270 patients, 116 (43%) patients had stayed more than 5 days. The length of stay of intensive care unit was significant positive correlation with the FCI(Functional Comobidity Index) score(r=0.33, p<.001) and APACHE(Aacute Physiology and Chronic Health Evlauaion) II(r=0.19, p=.001). In multiple logistic regression, the predictors of ICU length of stay were admission route (p=0.013), FCI score (p<0.001), APACHE II(p=0.012). Conclusions: Heatlh care providers in ICU should be aware that patients who admit to emergency departments and have higher disease severity are more considered to reduce their ICU length of stays.

• 전기의세계
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• v.23 no.6
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• pp.7-11
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• 1974

본고는 UNESCO 교환교수계획에 의거, 지난 6월 25일부터 7월 18일까지의 약 3주간 일본 동경대학 공학부 전기.전자공학과에 체류하면서 그곳에서의 교육과 연구체제에 접할 기회가 있었다. 체류기간중 필자가 직접 보고, 듣고, 느낀 그곳에서의 교육, 연구 및 산학협동체제에 관하여 기술하겠다.

• The Journal of the Korea Contents Association
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• v.12 no.6
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• pp.111-119
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• 2012

This study examines determinants of user immersion for Korean drama and entertainment genre programs among Chinese students in Korea. The major results are as follows: firstly, user immersion for entertainment genre was more greater than that of drama genre. Although drama was tended to evaluated based on star appearance and narrative structure, entertainment program was favored by its pleasure and vividness. Secondly, there were gender differences for entertainment and drama genre programs between male and female respondents. Also, there was a correlation between drama immersion and duration of stay. Thirdly, although determinants of drama immersion were program characteristics, duration of stay and drama preference, those of entertainment immersion were program characteristics, appearance of star players and entertainment preference.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2002.02a
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• pp.383-388
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• 2002

본 연구에서 구성한 바이오필터 시스템은 암모니아 가스를 대상으로 여러 조건에서 성능을 구명하였으며, 필터 설계시 중요 인자인 송풍량, 온도, 함수율, 압력강하, 체류시간들간의 관계를 구명하였다. 필터 내부의 온도 변화는 체류시간 및 압력손실에 거의 영향을 주지 않았으며, 함수율의 변화가 체류시간과 압력손실에 미치는 영향은 함수율 값이 증가할수록 체류시간은 감소했으며 반대로 압력손실은 증가하는 결과를 보였다. 이는 필터 내부의 공극률 변화로 생긴 결과라 판단된다. 송풍량은 바이오필터 효율에 절대적으로 영향을 미치며 송풍량이 증가할수록 체류시간은 감소하며 초기 제거율도 떨어진다. 미생물의 투입 여부에 따른 제거율은 미생물 접종을 하지 않은 경우 초기 흡착에 의한 영향으로 제거율이 높다가 시간이 지남에 따라 차츰 낮아져 90% 이하로 떨어지는 경향을 보였고, 균주를 접종한 경우에 있어서는 시운전 기간 동안 거의 100% 가까운 제거 성능을 보였다. 본 연구는 실험실에서 암모니아 가스만을 대상을 하여 실험하였다. 따라서 실제 축사에서 발생하는 다양한 성분의 악취와 농도에 대한 성능 검증과 개선에 대한 연구가 보다 장기간에 걸쳐 이루어져야 할 것이다. 또한 소요되는 에너지와 운전비용의 절감 등의 유지관리, 바이오필터와 타 방식과의 조합, 그리고 다양한 전처리 방식의 개발 등 여러 측면에서 바이오필터 성능 개선에 대한 연구가 병행되어야 할 것으로 판단된다.

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.12 no.3
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• pp.211-216
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• 2014

Corrosion products are released to the primary coolant in the corrosion process of structural materials. They are deposited on fuel surfaces and activated on exposure to a neutron flux with formation of radionuclides that can become incorporated into out-of-core surface films. To get a clear understanding of activated crud formation process, the specific activity and core residence time of fuel cruds was calculated as a function of exposure time to the core neutron flux on the assumption that parent nuclide is being deposited continuously. Fuel cruds were sampled in the fuel scraping campaign from Hanul Unit 1 Cycle 17 and analyzed for elemental concentration and radioisotope activity.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.13 no.1
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• pp.221-232
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• 1993

In this study, the period for stabilization in the case of recycling leachate was compared and analyzed with the case of non-cycle type, using lysimeters filled with municipal organic refuse. The lysimeters were operated with various detention time. In addition, the degree of stabilization was estimated by the way of measuring the quantity of gas from landfills. As the results, the recycle of leachate, which was modified as the neutral level of pH, accelerated the biological decomposition of organics with the raped growth of anaerobic bacteria in the system, and reduced the period for the stabilization. In the case of BOD and COD in leachate, COD. which had been originality similar to BOD, had increased more rapidly than BOD as time lapsed. Moreover, the quantity of gas from the recycle reactor was larger than from the non-cycle reactor. The shorter the detention time of leachate gas, the larger the quantity of gas produced in the lysimeters.

• Journal of the Korean Society of Clothing and Textiles
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• v.28 no.12 s.138
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• pp.1644-1654
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• 2004

As globalization has been accelerating in recent years, more people have opportunities to live abroad for an extended period of time, which is known to have strong influence on consumers. The main purposes of this study were to examine if and how sojourning experience could bring changes to people in general and in clothing styles with focus on Korean adults. The researchers conducted in-depth interviews on a total of thirty-six women and twenty-one men who lived in foreign countries more than two years and have been back in Korea longer than one year. The major results indicated that in addition to personalities, age, length of stay, activities during stay, gender, and cultural distances played important roles in bringing long-term changes on people. Re-established self-identity, changes in values, and openness toward diversity were major common changes observed in the interviewees. In addition, they became educated consumers with good knowledge of diverse brands and prices, and emphasized value as opposed to price. Changes in clothing styles were noted mainly among women. They placed high importance on having their own style, coordination and appropriateness, which were consistent with the general changes. Influences of different cultures were also noted.

• 전기의세계
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• v.24 no.2
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• pp.40-41
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• 1975

필자는 한전자체내의 초고압건설에 관한 해외기술훈련계획에 의거 1974년 6원 12일부터 약 4주간 자유중국 진만전력공사의 345KV 송변전설비건설현장을 견학할 기회가 있어서 체류기간중에 필자가 보고 느낀 초고압건설의 일면을 한국전력의 경우와 비교하여 소개하기로 한다.

• Journal of the Korean Society for Marine Environment & Energy
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• v.7 no.3
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• pp.116-121
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• 2004

Treatability tests were conducted to study the feasibility of EMMC process as a recycling-water treatment system in high density seawater aquaculture farm. To study the effect of organic and ammonia nitrogen loading rate on system performance, hydraulic retention time was reduced gradually from 12hr to 10min. The conclusions are can be summarized as follows. When the system HRT was reduced from 12hr to 2hr gradually, there was little noticeable change(reduction) in ammonia nitrogen removal efficiencies. However, removal efficiencies were decreased dramatically when the system was operated under the HRT of less than 2hr. In case of organics(COD), there was no dramatic change in removal efficiencies depending on HRT reduction. COD removal efficiencies were maintained successfully higher than 9％ when the system was operated at tile HRT of 10 min. System performances depending on media packing ratio in the reactors were also evaluated. There were little differences in each reactor performances depending on media packing ratio in reactor when the reactors were operated under the HRT of longer than 1hr. However, differences in reactor performances were considerably evident when the reactors were operated under the HRT of shorter than 1hr. When comparing reactor performance among 25％, 50％,7 5％ packed reactor, it can be judged that media packing ratio more than 50％ plays no significant role in increasing reactor performance. For this reason, packing the media less than 50％ is more reasonable way in view of economic. Such a tendency shown in COD removal efficiencies well agreed with the variation of ammonia-nitrogen removal efficiencies according to the media packing ratio in reactors at each HRT. Difference in effluent ammonia-nitrogen concentration between 50％ media packing reactor and 75％ media packing reactor was negligible. When comparing with the results of 25％ packing reactor, difference was not so great.

• Korean Journal of School Psychology
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• v.8 no.3
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• pp.379-403
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• 2011

This study examined coping strategies and perceived changes of the Chinese international students in South Korea. A total of 56 Chinese students participated and data was analyzed using the concept mapping method. The results showed that Chinese international students adopted developing language proficiency and using social networks as important coping strategies. They also perceived a wide range of changes including changes in the cultural and personal self. However, the perception of these coping strategies and changes differed by the length of stay. Chinese international students who stayed longer reported using specific coping strategies for mood regulation, which was distinctive from the coping strategies used by students who stayed for a shorter period of time. Students who stayed longer perceived negative changes as well as positive changes, while students who stayed for a shorter period reported predominantly positive changes. The findings indicate that university staff needs to understand and sensitively respond to the distinctive experiences of Chinese international students which vary across time.