• 디지털융복합연구
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• 제19권1호
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• pp.229-237
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• 2021

본 연구의 목적은 시뮬레이션 기반 흉관배액관리 간호교육이 간호학생의 시나리오 경험에 대한 반응, 학습에 대한 자신감 및 문제해결능력에 미치는 효과를 검증하는 것이다, 본 연구는 단일군 전후설계 실험 연구로 133명의 3학년 간호학생을 31개조로 시뮬레이션 교육 중재를 시행하였다. 연구결과, 시뮬레이션 실습교육 시행 전보다 시행 후에 시나리오 경험에 대한 반응은 긍정적인 결과로 나타났고, 학습에 대한 자신감 및 문제해결능력은 유의하게 향상된 것으로 나타났다. 이는 간호학 실습교육에 있어서 시뮬레이터를 이용한 시뮬레이션 교육이 효과적임을 보여주는 결과라고 할 수 있다. 본 연구는 현장중심의 실습교육 및 임상실무의 질을 향상시키는데 기여할 수 있을 것이다.

• Child Health Nursing Research
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• 제19권1호
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• pp.1-11
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• 2013

목적 본 연구의 목적은 간호대학생을 대상으로 신생아 중환자실에 입원한 호흡곤란증후군 환아 사례의 시뮬레이션 학습 시나리오를 개발하여 지식 적용-기술 수행, 문제 해결 능력, 학습만족도를 파악하는 데 있다. 방법 단일군 사후설계를 적용하였으며, 고위험 아동간호학을 수강하고 있는 간호학과 4학년 55명을 대상으로 총 17개조를 구성하여 매주 3개조(4-5명/조)로 시뮬레이션 운영 후 디브리핑을 60분간 실시하였으며, 자신의 실습 수행에 대한 문제해결능력과 학습만족도를 평가하였다. 결과 시나리오는 간호진단을 포함하여 6단계로 구성하였으며, 20분의 운영 시간 내에 호흡곤란 증후군 환아에 대한 지식 적용 및 기술 수행 능력, OSCE 수행 능력을 평가할 수 있도록 개발하였다. 지식 적용-기술 수행 평가에서 간호진단을 제외한 5개의 범주 중 평가 단계가 지식 적용과 기술 수행 모두 가장 높게 나타났다. 지식 적용에서 가장 높은 평균 점수를 보인 항목은 사정 단계에서 산소포화도 관찰, 평가 단계에서 산소분압과 산소포화도 확인이었고, 기술 수행에서는 중재 단계의 호흡곤란 완화 간호가 높았다. 사정 단계의 검사 확인은 지식 적용 및 기술 수행 영역에서 모두 낮게 나타났다. OSCE 수행 평가에서는 흡인 수행 능력에서는 사용한 물품 정리 및 수행 후 손씻기, 산소 공급에서는 급습기 멸균증류수 확인이 가장 부족한 것으로 나타났으며, 잘 수행된 항목보다 수행되지 못한 항목이 흡인과 산소 공급 모두 많은 것으로 나타나 기본간호술기의 중요성을 확인할 수 있었다. 문제 해결 능력과 학습 만족도는 양의 상관관계가 있는 것으로 나타나 문제 해결 능력이 높을수록 학습만족도가 높은 것으로 나타났다. 결론 시뮬레이션 교육 시행 후 문제 해결 능력에 따라 학습 만족도가 높으므로 문제 해결 능력을 높일 수 있도록 아동간호영역에서 다양한 시뮬레이션 교육 프로그램이 개발될 필요가 있으며, 기본간호술기 수행 능력을 증진할 수 있는 교육 프로그램이 더욱 활발히 운영되어야 한다고 생각된다.

• 한국수자원학회논문집
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• 제52권spc2호
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• pp.823-833
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• 2019

This study presents the impact of natural flow patterns on downstream fish habitat and economic outcomes in the Dal Stream, Korea. The study reach is 3.35 km long, located downstream form the Goesan Dam. To assess such impact, this study performed physical habitat simulations. The River2D model was used for the computation of the flow and the HSI model for the habitat simulation. Two physical habitat variables, flow depth and velocity, were used. The Zacco platypus, Zacco temminckii, Coreoleuciscus splendidus, and Opsariichthys bidens were selected as the target species in the study area. Using the building block approach (BBA), the scenarios for the hydropeaking mitigation were presented. Scenario 1 and scenario 2 were proposed by using the magnitude - duration concept and averaged the hydrologic data over the each month, respectively. Simulation results indicated that the scenarios effects significantly increased by about 18.6% for the weighted usable area (WUA). In addition, hydroelectric power benefits with both scenarios were investigated. It was revealed that the change of storing and releasing water decreased by about 27% for hydroelectric power benefits. In order to increase economic benefits, the scenario was modified with the discharges corresponding to the hydropeaking condition except the flood season. As a result, the hydroelectric power benefits were almost the same, however the aquatic habitat for the target species increased by about 5%. The change of dam re-operations through natural flow patterns provides an opportunity to minimize environmental and economic benefits in order to balance water management.

• 한국ITS학회 논문지
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• 제22권6호
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• pp.230-245
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• 2023

자율주행 기술의 발전과 함께 자율주행차(automated vehicle, AV)의 안전성 평가의 중요성이 증가하고 있다. 이에 따라 효율적인 안정성 평가를 진행하기 위해 AV가 주행 중 직면할 수 있는 상황을 사전에 정의한 평가 시나리오를 활용하고 있다. 그러나 기존에 활용되는 시나리오는 짧은 구간 내에서 한정적인 상황만을 다루고 있다. 따라서, 실제 도로에서 발생하는 연속적인 상황을 평가하지 못한다는 한계가 존재한다. 이에 본 연구에서는 AV의 안전성을 강도 높게 평가하기 위해 단일 시나리오를 다양한 기하구조가 존재하는 도로 전체 구간을 대상으로 연속적인 평가가 가능한 다중 시나리오로 변환하고자 한다. 특히, 시나리오를 연결하는 조건을 정의하고, 변환된 다중 시나리오를 상황, 범위, 실험 시나리오로 발전시키는 구체적인 방법론을 제시하였으며, 시뮬레이션으로 다중 시나리오를 구현하여 검증하였다.

• 한국측량학회:학술대회논문집
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• 한국측량학회 2007년도 춘계학술발표회 논문집
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• pp.261-264
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• 2007

In this study, I wished to forecast damage district by tsunami's occurrence. For this, analyzed tsunami that can happen in our country's neighborhood sea area using past data, and established tsunami's scenario by imagination with analysis result. I created 3D topographical model about study area and analyzed inundation area by achieving simulation by scenario. Also, result of simulation does overlay with digital map and manufactured imagination inundation map. This study result may offer as basic data for operation of tsunami's forecast/alarm system and making of disaster prevention policy.

• 한국시뮬레이션학회:학술대회논문집
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• 한국시뮬레이션학회 2001년도 The Seoul International Simulation Conference
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• pp.354-358
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• 2001

Cosim (Hardware and Software Co-Simulator) is a JavaBeans-based simulation tool fur validating systems architecture and estimating performance of web applications. Cosim has four components: Modeler, Translator, Engine and Scenario. Users start from Modeler to describe systems architecture in UML(Unified Modeling Language) deployment diagram, and then specify hardware & software performance parameters such as execution delay, network topology, and frame size. All information specified on Modeler are sent to Translator, and then automatically converted to Java programs. Scenario is responsible to run the Java program and produce results in text reports and graphs. Developers can reduce development time and cost by validating systems architecture of web applications before the actual deployment.

• 환경영향평가
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• 제23권3호
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• pp.177-186
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• 2014

Depending on the change of lifestyle and the improvement of people's living standards and rapid industrialization, urbanization of recent, demand for water is increasing rapidly. So emissions of domestic wastewater and various industrial waste water has increased, and water quality is worsening day by day. Therefore, in order to provide a measure against the occurrence of water pollution accident, this study was tried to simulate water pollution accident. This study simulated 2008 Gimcheon phenol accident using 1,2-D model, and analyze scenario for prevent of water pollution accident. Consequently the developed 1-D model presents high reappearance when compared with 2-D model, and has been able to obtain results in a short simulation run time. This study will contribute to the water pollution incident response prediction system and water quality analysis in the future.

• Water Engineering Research
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• 제5권2호
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• pp.81-99
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• 2004

Long term streamflow regime under virtual climate change scenario was examined. Rainfall forecast simulation of the Canadian Global Coupled Model (CGCM2) of the Canadian Climate Center for modeling and analysis for the IPCC SRES B2 scenario was used for analysis. The B2 scenario envisions slower population growth (10.4 billion by 2010) with a more rapidly evolving economy and more emphasis on environmental protection. The relatively large scale of GCM hinders the accurate computation of the important streamflow characteristics such as the peak flow rate and lag time, etc. The GCM rainfall with more than 100km scale was downscaled to 2km-scale using the space-time stochastic random cascade model. The HEC-HMS was used for distributed hydrologic model which can take the grid rainfall as input data. The result illustrates that the annual variation of the total runoff and the peak flow can be much greater than rainfall variation, which means actual impact of rainfall variation for the available water resources can be much greater than the extent of the rainfall variation.

• 환경영향평가
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• 제7권2호
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• pp.71-82
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• 1998

This study focuses on one of the most typical energy-intensive industries, the steel industry. The two-fold purpose of the study is to develop a model to assess measures to alleviate sulfur dioxide($SO_2$) emissions from the steel industry and to propose a concrete $SO_2$ emission reduction measure from the steel industry. This study partially employed and modified AIM(Asia-Pacific Integrated Model) developed by Japan National Environmental Research Institute to develop AIM/KOREA SULFUR model for simulation. In the study, a base scenario, which is BAU(Business As Usual) scenario, and mitigation scenarios(a use of low-sulfur contain fuel, fuel conversion to cleaner energy, an induction of desulfurization systems, and energy saving) were employed. The results of the simulation are summarized below: The sulphur dioxide emission from the steel industry in 1992 was estimated to be 252,000 metric tons; however, according to BAU scenario, sulphur dioxide emission is expected to be increased to 586,000 metric tons, which is 2.3 times greater than that in 1992 by year 2020. To alleviate such increasement, simulation results under various 7scenarios proved that some degrees of reduction may be possible by an induction of desulfurization systems although there may be numerous ways to interpretate the simulation results; however, the bottom line is that it appears to be difficult to achieve the Korean Ministry of Environment's policy goal-a mitigation of sulphur dioxide concentration to 0.01ppm.

• 환경영향평가
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• 제8권4호
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• pp.59-72
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• 1999

The purpose of the study is to propose the concrete and realistic alternative measures for $CO_2$ emission reduction on commercial sector. To achieve the purpose, this study adopted AIM/KOREA simulation model modified from AIM(Asia-Pacific Integrated Model) originally developed by Japan National Environmental Research Institute. The results of simulation demonstrate that the $CO_2$ emission from the commercial sector in 1995 was estimated 864 million TC(tons of carbon); however, according to the base scenario, $CO_2$ emission in 2020 is expected to be increased to 1,872 million TC, which is 2.17 times greater than that in 1995. In order to mitigate the ever-increasing $CO_2$ emission, the results of AIM/KOREA simulations under various scenarios showed that the 30-thousand-won carbon tax scenario does not successfully motivate the selection of advanced technology; however, with the 300-thousand-won carbon tax, a substantial amount of $CO_2$ emission reduction by 1.69 million TC from the BaU((Business-as-Usual)scenario is expected to be achieved by year 2020. Such substantial reduction of $CO_2$ emission under the 300-thoudsand-won carbon tax scenario is due to the introduction of advanced technology, such as use of condensing boilers, forced by heavier carbon tax. Under the scenario that presumes the maximum introduction of gas-burning industrial appliances, an 2.66 million TC of $CO_2$ reduction was expected. The results of this study suggest that the $CO_2$ emission reduction measures can be interpreted in many different views. However, if people and industries are fully aware of the economic benefit of energy saving, a certain level of $CO_2$ reduction by a successful introduction of advanced energy saving technology appears to be achieved without carbon tax or subsidies.