• 한국군사과학기술학회지
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• 제18권2호
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• pp.167-172
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• 2015

In this paper, we have compared some radio propagation models in order to verify the performance of W.C.Y LEE propagation model in mountain area. The four propagation models, which are Okumura-Hata, ITU-R P.525, Egli and W.C.Y. LEE, are analyzed by comparing the differences between measured values and propagation loss estimation values. And a correction method for W.C.Y LEE model is suggested to improve the performance of W.C.Y. LEE model with measured data in mountain area. Simulation results show that the estimation error using W.C.Y LEE model is the lowest among four propagation models. Also, the results show that the corrected W.C.Y LEE model with suggested method improves the performance of propagation loss estimation.

• 한국군사과학기술학회지
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• 제20권6호
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• pp.822-834
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• 2017

In M&S, radar model is a software module to identify position data of simulation objects. In this paper, we propose a radar performance model for simulations of air defenses. The previous radar simulations are complicated and difficult to model and implement since radar systems in real world themselves require a lot of considerations and computation time. Moreover, the previous radar simulations completely depended on radar equations in academic fields; therefore, there are differences between data from radar equations and data from real world in mission level analyses. In order to solve these problems, we firstly define functionality of radar systems for air defense. Then, we design and implement the radar performance model that is a simple model and deals with being independent from the radar equations in engineering levels of M&S. With our radar performance model, we focus on analyses of missions in our missile model and being operated in measured data in real world in order to make sure of reliability of our mission analysis as much as it is possible. In this paper, we have conducted case studies, and we identified the practicality of our radar performance model.

• 농촌지도와개발
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• 제4권1호
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• pp.29-40
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• 1997

This study aims to analyze the model of 'autonomous regional development', which was initiated in 1980s in Austria, then introduced into Germany and Switzerland. The basic ideas of autonomous regional development are constructed of the peculiarity, the autonomy, the integrity, and the project promotion. The subjects of the development-four poles of the model 'autonomous regional development' -are designed of the land residents, the regional advisers, the regional associations and the state. The concret measures to realize the autonomous regional development are the realization of independent regional economic structures, the autonomy of political decision-makings, and the development of peculiar rural cultures. The autonomous regional development is a new development model, which is founded on the right basic principles. In this model the initiative of the residents is emphasized, and the real autonomy of regional development is required. The principle of autonomy leads to the development of peculiar rural cultures, which keep the peculiarity of the region. The development of rural culture contributes in turn to restoring the identity of residents, which may become a driving force of the rural development.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2007년도 추계학술대회 및 제23회 정기총회
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• pp.129-130
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• 2007

해양 분야에서는 현재 해양 생태계 모델이나 수질모델 그리고 해수 유동모델과 같은 다양한 모델들이 사용되어 지고 있으며 이러한 해양 모델들의 결과 값은 사용자가 한눈에 알아보기 어려운 수치 데이터의 나열로서 출력되어 지고 있다. 본 논문에서는 현재의 분석하기 어려운 모델링결과 데이터를 보다 효과적으로 분석하기 위해 GIS 의 기법을 적용하여 이 데이터를 보다 직관적이고 가시적인 형태로 변환하고 표현하는 기술을 개발, 적용하였다.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2006년도 Proceedings of ISRS 2006 PORSEC Volume I
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• pp.224-227
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• 2006

For estimation of three inherent optical properties (IOPs), the absorption coefficients for phytoplankton ($a_{ph}$) and suspended solid particle ($a_{ss}$) and dissolved organic matter ($a_{dom}$), from ocean reflectance, we used inversion of remote sensing reflectance model (Ahn et al., 2001) at this study. The IOP inversion model assumes that (1) the relationship between remote sensing reflectance ($R_{rs}$) and absorption (a) and backscattering ($b_{b}$) is well known, (2) the optical coefficients for pure water ($a_{w}$, $b_{bw}$) are known, (3) the spectral shapes of the specific absorption coefficients for phytoplankton ($a^*_{ph}$) and suspended solid particle ($a^*_{ss}$) and the specific backscattering coefficients for phytoplankton ($b_b^*_{ph}$) and suspended solid particle ($b_b^*_{ss}$) are known. The input data of IOP inversion model is used in-situ ocean optical data at the seawater around the Korea Peninsula for 5 years (2001-2005). We compared the output data of the IOP inversion model and the in-situ observation for seawater around the Korea Peninsula.

• 대한치과의사협회지
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• 제57권8호
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• pp.437-447
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• 2019

Purpose: In recent years, efforts to improve the dental curriculum in South Korea have focused on a shift to outcome-based dental education based on core competencies in dentistry. So far, the field has seen various studies on the development of competencies, performance evaluation, and the importance of outcome-based education, but few studies have documented the development of such an education model. Therefore, this study develops an OBE curriculum for dentistry education and describes the development procedures and then finally this study intends to share our experience to other dental schools. Methods: This study introduces the development procedure and details of an outcome-based education model for dental education and presents the five stages of an outcome-based education model. In this study, 3 educational experts and 2 dental professor composed the TFT and developed the research method according to the ADDIE model. Step 1 is to conduct quantitative / qualitative research analysis through some survey and interview, Step 2 is to do a survey to revise competency, Step 3 is to develop a materials through consensus and participation of our professors of the dental school, Step 4 is to do some workshops, Step 5 is to prepare and conduct a outcome evaluation. Results: Step 1 is a required process for developing an educational model: the Job Analysis & Need Analysis stage. Step 2 is the Development of Outcome and Competency stage, which involves revising the competencies that are the basis of the curriculum. Step 3 is developing competency descriptions, competency levels, and evaluation criteria?the Development of Outcomes and Evaluation Standards. Step 4 is the Development of Milestones for Curriculum and Instructional Strategy, which examines the curriculum's problems and analyzes the improvements of each course. Step 5 is the Evaluating Outcomes stage, conducted based on the competencies specified by the target dental school. Conclustion: The model presented here can serve as a foundation for outcome-based education in other dental schools.

• Journal of Information Processing Systems
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• 제8권4호
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• pp.539-554
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• 2012

Model-driven and component-oriented development is increasingly being used in the development of embedded systems. When combined, both paradigms provide several advantages, such as higher reuse rates, and improved system quality. Performing model-driven and component-oriented development should be accompanied by a component model and a method that prescribes how the component model is used. This article provides an overview on the MARMOT method, which consists of an abstract component model and a methodology for the development of embedded systems. The paper describes a feasibility study that demonstrates MARMOT's capability to alleviate system design, verification, implementation, and reuse. Results indicate that model-driven and component-based development following the MARMOT method outperforms Agile development for embedded systems, leads to maintainable systems, and higher than normal reuse rates.

• 자원ㆍ환경경제연구
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• 제23권1호
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• pp.133-156
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• 2014

경제구조를 표현하는 식들로 구성된 모형을 이용하여 도출되는 정량적 분석결과는 성과의 크기를 제시하므로 정책을 평가할 때에 유용하다. 이에 본 논문에서는 해외석유 가스개발사업의 국민경제에 대한 효과를 정량적으로 측정하기 위하여 해외석유 가스개발사업을 반영한 거시경제모형을 구축하고, 이를 이용하여 해외석유 가스개발사업으로부터의 회수액이 GDP, 경상수지, 실업률, 소비자물가, 환율 등에 미치는 효과를 분석하였다. 해외석유 가스개발 사업의 회수액은 우리나라 기업이 해외석유 가스개발사업에 참여하여 획득한 석유 또는 가스를 달러 형태로 금액화한 것이다. 해외석유 가스개발사업을 반영한 거시경제모형은 한국은행의 모형(1997, 2004, 2012)을 이용하여 구축하였으며, 개별 행태방정식의 통계적 적합성과 historical simulation을 통해 모형 전체의 안정성을 확인하였다. 분석결과에 따르면 시간이 경과하면서 해외석유 가스개발사업 회수액의 규모가 커지면서 우리 나라의 거시경제 변수에 미치는 효과의 크기도 커졌다. 변수별로 보면 해외석유 가스개발사업은 경상수지, 실질 GDP, 실업률에 대해서 긍정적인 효과를 유도하였다. 이에 비해서 소비자물가에 대해서는 상승하는, 그리고 환율에 대해서는 하락(원화가치의 평가절상)하는 효과를 보였다. 매해마다 효과의 크기는 다르지만, 2011년 기준으로 해외석유 가스개발사업 회수액은 경상수지를 2.226%, 실질 GDP를 0.401% 증가시키고, 실업률을 0.489%p 감소시켰다. 소비자물가는 0.101% 증가시키고, 원/달러환율은 0.379% 낮추었다.

• 한국군사과학기술학회지
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• 제19권1호
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• pp.95-104
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• 2016

To make a firing table of artillery with trajectory simulation, a precise trajectory model which corresponds with real firing test is required. Recent 4-DOF modified point mass trajectory model is considered accurate as a theoretical model, but fitting coefficients are used in calculation to match with real firing test results. In this paper, modified point mass trajectory model is presented and method of setting ballistic coefficient is introduced by applying optimization algorithms. After comparing two different algorithms, Particle Swarm Optimization and Covariance Matrix Adaptation - Evolutionary Strategy, we found that using CMA-ES algorithm gives fine optimization result. This fitting coefficient setting method can be used to make trajectory simulation which is required for development of new projectiles in the future.

• 방사선산업학회지
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• 제7권2_3호
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• pp.209-219
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• 2013

RI-Biomics field comes into the limelight as a new fusion radiation technology. These rapid development of RI-Biomics cause the necessity of establishment of a new methodical education program model for consistent training of professional manpower in RI-ADME, Biomics field. But domestic current status is not satisfied to training human resource development in RI-Biomics. Actually domestic educational organization related to RI-Biomics just run educational programs oriented basic theory, so practical and fusion education are not existed nowadays for preliminary RI-Biomics expert. Therefore we established a new education program model for educate of the expert in RI-Biomics field to overcome current problem about the route of knowledge that has more monotonous and concentrated tendency and non-professional education. To improve universality and practicality, we conduct education-training model survey about domestic and foreign country. This new human resource development model will contribute to fostering new expert in RI-Biomics field.