• 한국물환경학회지
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• 제26권4호
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• pp.637-647
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• 2010

The Universal Soil Loss Equation (USLE)-based modeling systems have been widely used to simulate soil erosion studies. However the GIS-based USLE modeling systems have limitation in gully erosion evaluation which is one of the most important factor in soil erosion estimation. In this study, the integrated soil erosion evaluation system using with Sediment Assessment Tool for Effective Erosion Control (SATEEC) system, nLS and Unit Stream Power-based Erosion/Deposition (USPED) model was developed to simulate gully erosion. Gully head location using nLS model, USPED for gully erosion, and the SATEEC estimated sheet and rill erosion were evaluated and combined together with the integrated soil erosion evaluation system. This system was applied to the Haean-myeon watershed, annual average sediment-yield considering sheet, rill and gully erosion was simulated as 101,933 ton/year at the study watershed. if the integrated soil erosion evaluation system is calibrated and validated with the measured data, this system could be efficiently used in developing site-specific soil erosion best management system to reduce soil erosion and muddy water inflow into the receiving waterbody.

• 한국과학교육학회지
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• 제39권2호
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• pp.197-205
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• 2019

본 연구의 목적은 2015 개정 교육과정의 신설과목인 통합과학의 현장안착을 지원하기 위해 교육부에서 실시한 통합과학 선도교원 연수에 대한 성과평가를 통해 통합과학 교육과정 지원 방안을 도출하려는 것이다. 2017년도 통합과학 선도교원연수를 중심으로 연수에 참여한 교사들이 개발한 연수 산출물, 연수강사로 참여한 과학교사들과의 심층면담 등을 분석하여 통합과학 선도교원 연수에서 드러난 통합과학 교육과정의 특성과 통합과학 교육과정 현장 안착을 위한 지원 방안을 도출하였다. 2017년도 통합과학 선도교원 연수에 참여한 교사들은 연수를 통해 통합과학 교수 학습 및 평가 계획을 개발하였는데, 교사들이 가장 많이 선택한 성취기준은 [10통과08-03]과 [10통과 09-04]였다. 이들 성취기준에 대해 텍스트마이닝 분석을 통해 성취기준 재해석, 교수학습 방법, 학습소재, 평가방법, 교과역량 등의 구현 실태를 탐색하였다. 또한 2015 통합과학 교육과정의 성취기준 재구성 모델 사례를 통합 우수 사례, 학생 참여형 수업 우수 사례, 교과역량 신장 우수 사례 등으로 구분하여 각각의 특징을 분석하였다. 연구결과를 토대로, 통합과학 교육과정 현장 안착을 위한 연수 지원방안과 후속 연구를 제안하였다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 1997년도 춘계학술발표회 논문집
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• pp.5-16
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• 1997

This paper presented a method of evaluting navigational safety of a ship by means of the integrated seakeeping performance index(ISPI). The ISPI is defined by measuring only any one factor through the medium of relative dangerousness of the other factors for evaluating seakeeping performance. This evaluation method can be applied to the ships for any types and loading conditions. In developing the practical evaluation system of navigational safety. it is expected to be useful for developing the optimum type of ship by applying at the initial design phase.

• 간호행정학회지
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• 제14권4호
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• pp.387-395
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• 2008

Purpose: The purpose of this study was to evaluate the educational outcome of applied integrated curriculum in a nursing college. In order to evaluate the educational outcome students' ability was surveyed for the four main elements of the curriculum. Four main elements were ability in application of nursing process, communication skill, critical thinking disposition, and competence in nursing profession. Method: The subjects were 97 nursing students who had been educated by the integrated curriculum for 4 years. Data were collected using self-report questionnaire on Dec. 6, 2006, and analyzed by using ANOVA, t-test, and pearson correlation coefficient. Result: The mean score of ability in application of nursing process was 3.78/5.00, communication skill was 3.98/5.00, critical thinking disposition was 3.73/5.00, and competence in nursing profession was 4.04/5.00. There was a significant correlation between four main elements of the curriculum. There was a significant difference in students' level of ability according to subjects' evaluation to the curriculum. Conclusion: The study results suggested that review and supplementation of the integrated curriculum. And further study on the educational outcome in order to upgrade the curriculum are needed.

• Journal of Positioning, Navigation, and Timing
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• 제9권2호
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• pp.99-115
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• 2020

Since GNSS is easily affected by jamming and/or spoofing, alternative navigation systems can be operated as backup system to prepare for outage of GNSS. Alternative navigation systems are being researched over the world, and a multi-radio integrated navigation system using alternative navigation systems such as KNSS, eLoran, Loran-C, DME, VOR has been researched in Korea. Least Square or Kalman filter can be used to estimate navigation parameters in the navigation system. A large number of measurements of the Kalman filter may lead to heavy computational load. The decentralized Kalman filter and the federated Kalman filter were proposed to handle this problem. In this paper, the decentralized Kalman filter and the federated Kalman filter are designed for the multi-radio integrated navigation system and the performance evaluation result are presented. The decentralized Kalman filter and the federated Kalman filter consists of local filters and a master filter. The navigation parameter is estimated by local filters and master filter compensates navigation parameter from the local filters. Characteristics of three Kalman filters for a linear system and nonlinear system are investigated, and the performance evaluation results of the three Kalman filters for multi-radio integrated navigation system are compared.

• Nuclear Engineering and Technology
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• 제42권5호
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• pp.590-599
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• 2010

Recently, efficient operation and practical management of power plants have become important issues in the nuclear industry. In particular, typical aging parameters such as stress and cumulative usage factor should be determined accurately for continued operation of a nuclear power plant beyond design life. However, most of the major components have been designed via conservative codes based on a 2-D concept, which do not take into account exact boundary conditions and asymmetric geometries. The present paper aims to suggest an effective fatigue evaluation methodology that uses a prototype of the integrated model and its transfer functions. The validity of the integrated 3-D Finite Element (FE) model was proven by comparing the analysis results of individual FE models. Also, mechanical and thermal transfer functions, known as Green's functions, were developed for the integrated model with the standard step input. Finally, the stresses estimated from the transfer functions were compared with those obtained from detailed 3-D FE analyses results at critical locations of the major components. The usefulness of the proposed fatigue evaluation methodology can be maximized by combining it with an on-line monitoring system, and this combination, will enhance the continued operations of old nuclear power plants.

• Nuclear Engineering and Technology
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• 제53권11호
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• pp.3465-3473
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• 2021

For a long time, research into integrated deterministic-probabilistic safety assessment has been continuously conducted to point out and overcome the limitations of classical ET (event tree)/FT (fault tree) based PSA (probabilistic safety assessment). The current paper also attempts to assert the reason why a technical transformation from classical PSA is necessary with a re-interpretation of the categories of risk. In this study, residual risk was classified into interpolating- and extrapolating-censored categories, which represent risks that are difficult to identify through an interpolation or extrapolation of representative scenarios due to potential nonlinearity between hardware and human behaviors intertwined in time and space. The authors hypothesize that such risk can be dealt with only if the classical ETs/FTs are freely relocated, entailing large-scale computation associated with physical models. The functional elements that are favorable to find residual risk were inferred from previous studies. The authors then introduce their under-development enabling techniques, namely DICE (Dynamic Integrated Consequence Evaluation) and DeBATE (Deep learning-Based Accident Trend Estimation). This work can be considered as a preliminary initiative to find the bridging points between deterministic and probabilistic assessments on the pillars of big data technology.

• 한국군사과학기술학회지
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• 제25권3호
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• pp.259-266
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• 2022

This study aims to introduce missile live-fire during the ship operational test and evaluation(T&E) as a means of verifying the integrated combat capability(ICC) of various systems installed on naval ships. The research method identified domestic and foreign T&E systems and cases, and reports related to ICC, which were written during the ship's design stage. As a result of research, Republic of Korea is not conducting the missile live-fire at the ship T&E stage due to the lack of relevant systems, while the U.S. is conducting it based on the mission-based T&E and the end-to-end test system. As a way to improve within the current domestic ship acquisition systems, the reaction time analysis, a quantitative analysis result of ICC calculated at the ship basic design stage, was proposed to be verified by missile live-fire during ship operational T&E.

• 상하수도학회지
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• 제35권3호
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• pp.187-196
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• 2021

When evaluating the extent of the impact of water pollutants on the surrounding area, we would like to present the target level (proposal) of the quality of the environment, which is the standard for evaluation. We propose the environmental quality target level for substances that need to be applied domestically by investigating overseas cases operating the integrated environmental management system and the implications of domestic environmental pollutant management. The appropriateness of the environmental quality target level reviewed in this study was determined using data from the water quality measuring network, and future improvement measures were proposed. We review the available methodologies for setting quality objectives for the environment. It proposed the environmental quality target level for 21 substances that have domestic water pollutant emission standards and do not have environmental standards, and proposed future improvement measures. If it is necessary to add quality target-level items of the environment in the future, it is believed that expansion will be possible based on the methodology presented in this study.

• 한국수자원학회논문집
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• 제41권1호
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• pp.87-100
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• 2008

본 연구는 유역통합관리를 위한 대안들의 우선순위를 다양한 요소를 객관적으로 고려하여 산정하기 위해 대안평가지수(alternative evaluation index, AEI)를 개발하였고 이를 적용하였다. 이를 위해 물순환 건전화를 위한 다양한 대안들에 대한 연속유출 모의모형의 효과분석 결과, 다기준 의사결정 기법과 지속가능성 평가모형인 DPSIR(Drivers-Pressure-State-Impact-Response)을 이용하여 대안의 평가지수 및 순위를 산정하였다.