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      • KCI등재후보

        베트남 급성장 도시지역의 기후변화 홍수재해 위험성 분석

        김소윤,이병재,이종소,Kim, So Yoon,Lee, Byoung Jae,Lee, Jongso 한국방재안전학회 2020 한국방재안전학회 논문집 Vol.13 No.2

        Vietnamese cities have a high risk of flooding under climate change due to their geographical characteristics. In this situation, the urban area is expanding with rapid growth of urban population. However, the risk of flooding is increasing due to the increase in impermeable areas and insufficient infrastructure. This study analyzed the urban expansion trend at the national level in Vietnam for the past 10 years (2007-2017) by using the Urban Expansion Intensity Index. Also, this study selected Hue City as a region with a large impact of climate change and a rapid expansion and found the possibility of flooding in the urban expansion area. The result showed that cities have been expanded around major cities in the Red River Delta, Mekong Delta, and coastal areas. In the case of Hue City, the area with fast expansion rate has a higher expected flood area. It implies that the risk of flood disasters may increase if the urabn expansion is carried out without disaster prevention measures. It is expected that Korean urban disaster prevention policies such as urban climate change disaster vulnerability analysis system will be helpful in establishing urban plans considering climate change in the fast growing regions such as Vietnam. 베트남의 도시들은 지리적 특성으로 인해 기후변화에 따른 홍수 위험성이 높은 상황인데, 빠르게 도시지역이 확장됨에 따라 홍수위험성은 더욱 가중되고 있다. 본 연구에서는 도시확장강도지수를 활용하여 지난 10년간(2007년-2017년) 베트남 국가차원에서의 도시확장 추세를 확인한 후, 기후변화 영향이 크고 확장속도가 빠른 지역으로서 후에시를 선정하여 홍수발생가능성을 확인하였다. 그 결과 홍강델타, 메콩델타, 해안지역의 주요 도시 주변으로 확장되었으며, 후에시의 경우 확장속도가 빠른 지역일수록 예상침수면적이 높은 것으로 나타났다. 이는 향후에 홍수재해 위험성이 더욱 커질 수 있음을 의미한다. 재해취약성분석 제도 등 국내의 도시방재정책은 베트남 급성장지역에서 기후변화를 고려한 도시계획 수립 시 도움이 될 것이다.

      • KCI등재후보

        Teaching strategies for promoting young children's prosocial behavior

        김소윤,김유진 대한아동복지학회 2014 아동복지연구 Vol.12 No.4

        As early childhood is a very important period of developing sociality, it is very important to promotechildren's prosocial behavior in that period. Prosocial behavior can be defined as voluntary behavior forgiving benefits and help to others by internal motive instead of expecting external reward. Prosocialbehavior development, together with a child's behavior that brings benefits and help to others, has apositive influence on a child's social development, helping a child's grow up as a desirable adultneeded by the future society. Therefore, teachers should help children behave adaptively and considereffective teaching methods for it. This study examined children's prosocial behavior, introduced diverseteaching strategies(natural teaching strategy, environmental arrangement strategy, peer tutoring strategy,self-instruction strategy, teacher-child conversation strategy, modeling, etc.) for teachers to promoteprosocial behavior in education field and considered methods of using such strategies. Children haveindividually different characteristics, such as disposition, developmental level, and interest, etc., soteachers are supposed to utilize these various teaching strategies.

      • KCI등재

        Emergency department utilization and risk factors for mortality in older patients: an analysis of Korean National Emergency Department Information System data

        김소윤,강형구,조영길,이희경,이성우,정진우,김원영,김수진,한갑수 대한응급의학회 2021 Clinical and Experimental Emergency Medicine Vol.8 No.2

        Objective With trends in population aging an increasing number of older patients are visiting the emergency department (ED). This study aimed to identify the characteristics of ED utilization and risk factors for in-hospital mortality in older patients who visited EDs. Methods This nationwide observational study used National Emergency Department Information System data collected during a 2-year period from January 2016 to December 2017. The characteristics of older patients aged 70 years or older were compared with those of younger patients aged 20 to 69 years. Risk factors associated with in-hospital mortality were analyzed by multivariable logistic regression. Results A total of 6,596,423 younger patients and 1,737,799 older patients were included. In the medical and nonmedical older patient groups, significantly higher proportions of patients were transferred from another hospital, utilized emergency medical services, had Korean Triage and Acuity Scale scores of 1 and 2, required hospitalization, and required intensive care unit admission in the older patient group than in the younger patient group. ED and post-hospitalization mortality rates increased with age; in particular, older medical patients aged 90 or older had an in-hospital mortality rate of 9%. Older age, male sex, transfer from another hospital, emergency medical service utilization, a high Korean Triage and Acuity Scale score, systolic blood pressure <100 mmHg, respiratory rate >20/min, heart rate >100/min, body temperature <36°C, and altered mental status were associated with in-hospital mortality. Conclusion Development of appropriate decision-making algorithms and treatment protocols for high risk older patients visiting the ED might facilitate appropriate allocation of medical resources to optimize outcomes.

      • KCI등재

        가중선형회귀를 통한 순항항공기의 궤적예측

        김소윤,이금진,Kim, Soyeun,Lee, Keumjin 한국항공운항학회 2016 한국항공운항학회지 Vol.24 No.4

        The departure flow management is the planning tool to optimize the schedule of the departure aircraft and allows them to join smoothly into the overhead traffic flow. To that end, the arrival time prediction to the merge point for the cruising aircraft is necessary to determined. This paper proposes a trajectory prediction model for the cruising aircraft based on the machine learning approach. The proposed method includes the trajectory vectored from the procedural route and is applied to the historical data to evaluate the prediction performances.

      • KCI등재

        Stem Cell In Adult Pancreas: Its Activation and Induction of Beta Cell Differentiation

        김소윤,김은호,이송,이건옥,민본홍,박인선 대한해부학회 2004 Anatomy & Cell Biology Vol.37 No.2

        Stem cells in adult pancreas and their specific marker are poorly characterized. We hypothesized that pancreatic stemcells could evolve from the duct system in response to neogenic stimulation. Following partial pancreatectomy (Px), wefound extensive formation of ductules consisting of nestin-positive epithelial cells with higher replicating ability in theneogenic foci after Px. The neogenic ductules were isolated for the culture of nestin-positive duct cells. These nestinpositiveduct cells were numerous and displayed extensive self-replication in the duct cell explants, thus depicted asnestin-positive duct stem (NPDS) cells. Endocrine cells, mostly insulin cells were present in the explants at day 2 assingle cells or as small clusters adjacent to the NPDS cells, and formed islet-like masses at day 3 of culture, implyingislet cell differentiation from NPDS cells. We found transient up-regulation of PDX-1 expression by RT-PCR at day 3after Px in pancreatic tissue. We investigated the effect of clusterin overexpression on differentiation of insulin betacells from duct cells We found that the number of insulin producing cells increased 11.5 fold when clusterin was overexpressed.Insulin expression, both insulin mRNA and peptide levels, was increased in clusterin cDNA transfectedcells.In conclusion, we suggest that NPDS cells could be generated from adult pancreas by neogenic motivations and theymay differentiate into insulin-secreting-cells, and clusterin could stimulate not only differentiation of precursor cells inthe pancreatic duct, but also proliferation of predifferentiated beta cells. Those differentiated beta cells are functionalcells secreting insulin in response to glucose stimulation.

      • KCI우수등재

        보행자우선도로사업으로 인한 보행자 교통사고 저감효과 분석

        김소윤,이경환 대한건축학회 2020 대한건축학회논문집 Vol.36 No.11

        This research analyzed the number of pedestrian traffic accidents before and after the pedestrian priority street project was introduced bythe Seoul Metropolitan Government in 2013; the Project has since been implemented nationwide. Research has not been carried out muchto analyze the effects of the introduction of pedestrian priority street projects, especially how much the reduction of pedestrian trafficaccidents has been made, which is the most important goal of the pedestrian priority street project, and how the creation ofpedestrian priority streets affects pedestrian traffic accidents. The Project uses the Traffic Authority’s Traffic Accident Analysis System(TAAS) to identify the physical factors involved in reducing pedestrian traffic accidents, and the Poisson regression model to verify theProject’s effectiveness and to prepare detailed improvement measures. Toward this end, the Seoul Metropolitan Government analyzed thefactors affecting the number of pedestrian traffic accidents before and after the Project using the T-Test, and the number of pedestrian trafficaccidents through Poisson regression analysis. The T-Test analysis showed statistically significant results, and the Poisson regression analysisshowed that commercial areas, population density, floating population, road width, one-way traffic, crosswalk density, and closed-circuittelevision (CCTV) presence all were land-use characteristics that had an effect on pedestrian safety. These findings should be considered notonly for pedestrian convenience or budget, but also for their effect on pedestrian safety when making land-use or installation decisions. 본 연구는 서울시에서 시행하고 있는 보행자우선도로사업을 대상으로 사업 전후 보행자 교통사고가 감소하였는지 분석하고 저감에 영향을 미치는 물리적 특성을 도로교통공단에서 제공하는 교통사고분석시스템(TAAS)을 활용하여 사업 전후 보행자 교통사고 수 변화를 통계적으로 검정하고 보행자 교통사고에 영향을 미치는 요인을 포아송 회귀분석을 이용하여 분석하였다. 분석결과 보행자 교통사고가 약 29% 감소한 것으로 나타났으며, 포아송 회귀분석 결과 지역의 용도지역, 유동인구 특성, 도로 및 교통여건이 영향을 미치는 것으로 나타났다.

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