• Proceedings of the Materials Research Society of Korea Conference
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• 2011.05a
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• pp.13-13
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• 2011

1. 연구계획서 작성시 필수적으로 기술하여야 할 항목 - 연구의 중요성 - 깊이가 있는 명확한 가정 - 연구목표의 달성 개연성: 양질의 선행연구 결과 및 그림 데이터 - 논리적 전개 및 실험 설계: 가정을 뒷받침할 만한 실험결과 - 주어진 기간 내에 제안한 것들을 달성할 수 있는지 여부 : 지나친 욕심이 젊은 과학자가 나쁜 평가를 받을 수 있는 가장 일반적인 실수 2. 연구계획서를 작성하기 전에.. - 정말 연구계획서를 제출할 적기인가? 너무 이른 것이 아닌지? - 타인에 의해 이미 실험된 것이 아닌지? - 충분한 시간을 두고 작성 ? 최소 2~3개월 전 연구계획서를 미리 작성한 후 동료 또는 선배에게 초안을 보여주고 검토를 받는 것이 매우 중요함: 제출하기 전에 혹독한 비판을 감수 3. 연구목표 - 흥미롭고 중요한 문제(issue)를 적절히 강조하고 있는지? - 가정에 근거하고 있는지? - 목표가 win-win 인지?: 즉, 연구성과가 현재 통용되고 있는 일반적인 가정들과 맥을 같이 하는지? 4. 연구배경 - 확실하고 체계적이어야 함 : 부제(subtitle) 사용. 주제의 중요성이 분명하게 시각적으로 드러나야 함. - 연구결과 파생될 기대효과를 현재와 비교하여 분명한 차이점을 기술 - 연구계획서에서 참고한 것들이 기존지식을 갱신한 것이고 최근 연구동향을 반영한 것이라는 것을 분명히 하여야 함. 5. 예비결과 - 과거 연구성과를 가능한한 많이 기술. ? 현재의 연구계획을 도출하게 된 근거를 과거의 연구와 연관시켜 강조하여야 함. ? 최소한 연구계획서에 기술된 연구방법의 개연성을 기술하여야 함. - 성과가 높지 않은 예비결과는 제시않는 것이 효율적임 - 연구계획서에 제시된 연구방법이 선험 연구에 근거한 것임을 강조하여야 함 ? 만일 전문성이나 선험연구결과가 없을 때는, 경험있고 영향력 있는 조언자나 공동연구자를 열거하고, 그들의 공동연구 동의서를 첨부하여야 함. ? 특히, 공동연구자들이 어떤 부분에서 협력할 것인지 구체적으로 기술하여야 함. - 필요한 부분에서 적절하게 구체적 수치와 raw data를 제시

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.15 no.4
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• pp.214-223
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• 2003

A reliability analysis is straightforwardly applied to the sloped coastal structures against the random wave overtopping. A reliability function can be directly derived from a empirical formula in which may take into account many variables associated with the random wave overtopping. The probability of failure exceeded the allowable overtopping discharge can be evaluated as a function of dimensionless crest height with some reasonable statistical properties and distribution functions of each random variable. Some differences of probabilities of failure occurred from variations of the slopes of structures as well as types of armour are investigated into quantitatively. Additionally, the effects of the crest width of units placed in front of the concrete cap on the probability of failure may be analyzed. Finally, the sensitivity analyses are carried out with respect to the uncertainties of random variables. It is found that the overall characteristics similar to the known experimental results are correctly represented in this reliability analyses. Also, it should be noted that the probabilities of failure may be quantitatively obtained for several structural and hydraulic conditions, which never assess in the deterministic design method. Thus, it may be possible for determination on the crest height of sloped coastal structures to consider the probability of failure of wave overtopping, by which may be increased the efficiency of practical design.

• Journal of Korean Society of Disaster and Security
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• v.11 no.2
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• pp.75-82
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• 2018

The purpose of this study is designed to apply the model of the problem-based learning in the class of Disaster Psychology and then analyze the experiences that its students felt. The participants in this research are 56 undergraduates. The class of Disaster Psychology was conducted with blended learning using lecture and PBL. The PBL problem should be solved just for 3 weeks. The data collected after the class is an analysis of the PBL problem, log on group activities, personal reflection diary, Group evaluation. Then, each data should be collected and analyzed quantitatively through the repetitive comparison, and the triangle-measurement. The findings suggest that there is a remarkable educational learning experience in seven categories: acquire expertise, confidence, practical problem-solving skill, communication ability, roles of calling, efficacy, change in perspective. This study introduces a case of PBL course development and expects subsequent applications and research.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.39 no.3
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• pp.33-41
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• 2021

This study identified the scale that traditional landscape design has taken up by analyzing a total of 1037 services for design of cultural heritage that had been ordered by the government agencies from 2018 to 2020, and has drawn characteristics of traditional landscape design focusing on major cases. The results are as follows. First, the number of order cases for traditional landscape design has shown differences annually in the services of design of cultural heritage, but the design amount has been found to have the similar average annually, which confirmed that the same level has been maintained each year. It was found that the number of cases of traditional landscape design requiring responsibilities or participations of landscape engineers for 3 years in the entire design had a high proportion of approximately 26%. Second, the traditional landscape design has required professional knowledge and experiences of landscape engineers that could not be replaced by the business operator for design of cultural heritage consisting of architects. The expertise has been shown differently depending on types of construction. First, the topographical design for the work to build a foundation has required understanding of ground shapes and its elevations and professional knowledge on calculation of the amount of the earth work and the remains maintenance technique etc. The plantation design has required basic knowledge on growth characteristics of trees and the environment for growth and understanding of the vegetation landscape of the past. Meanwhile, the design for traditional pavement and traditional landscape structures and facilities has required the expertise on traditional materials that are different from the modern ones and their processing and construction methods. The understanding of changes to water paths and ecosystem, the principles of fluids, and characteristics of each type of fluid was essential for the design for the ecological landscape work including the maintenance of a water system such as rivers etc. As such, the traditional landscape design has a scale accounting for approximately one fourth of the entire cultural heritage design and requires the expertise differentiated from other fields. This improves the provisions of the current law on limiting the actual design, suggesting the need for the establishment of a traditional landscape design company so that all traditional landscape designs can be carried out by landscape engineers.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2019.05a
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• pp.79-82
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• 2019

This study aims to design and implement automated SEO tools that has applied the artificial intelligence techniques for search engine optimization (SEO; Search Engine Optimization). Traditional Search Engine Optimization (SEO) on-page optimization show limitations that rely only on knowledge of webpage administrators. Thereby, this paper proposes the metadata generation system. It introduces three approaches for recommending metadata; i) Downloading the metadata which is the top of webpage ii) Generating terms which is high relevance by using bi-directional Long Short Term Memory (LSTM) based on attention; iii) Learning through the Generative Adversarial Network (GAN) to enhance overall performance. It is expected to be useful as an optimizing tool that can be evaluated and improve the online marketing processes.

• The Korean Society of Law and Medicine
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• v.21 no.3
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• pp.77-116
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• 2020

The use of drugs that reflect the experiences and achievements of modern science has given human being the benefits of treating diseases and improving health conditions. However, in addition to the benefits of those, medicines have inherently inevitable adverse reactions. Many countries are taking measures such as market entry regulations or post-marketing surveillance to minimize damage caused by drug side effects, but the occurrence of side effects cannot be eliminated. Although the damage is force majeure, in some cases, the doctor who prescribed the drug or the pharmacist who administered the drug may have to compensate for the damage. The liability depends on whether the side effects were known in advance, the type of medicine, etc. On the other hand, in some cases, drug manufacturer may have to take liability for the side effect itself. As it is not easy for victims to be compensated for damages in those cases, many countries, including Korea, are setting to protect victims through the Product Liability Act. Drugs are also one of the product, so liability set by the Product Liability Act may apply. Even before the enactment and enforcement of the Product Liability Act, damage caused by drug has occurred. To resolve them, precedents have developed case law, which have many similarities with the Product Liability Act, but also have differences. Damage caused by drug manufactured prior to the enforcement of the Product Liability Act may occur in the future. In this context, the legal principles of the case laws will remain valid and be applied. This is an important reason to review the case law of precedents.

• Journal of the Korea Concrete Institute
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• v.14 no.6
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• pp.989-1000
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• 2002

As advanced earthquake design methods using nonlinear static analysis are developed, it is required to estimate precisely the cyclic behavior of reinforced concrete members that is characterized by strength, deformability, and energy dissipation. In a recent study, a simplified method which can estimate accurately the energy dissipation capacity of flexure-dominated RC members subjected to repeated cyclic load was developed. Based on the previously developed method, in the present study, simple equations that can be used for calculating the energy dissipation capacity were derived and verified by the comparison with experimental results. Through parametric study using the proposed equations, effects of axial load, reinforcement ratio, rebar arrangement, md ductility on the dissipated energy were investigated. The proposed equations can accurately estimate the energy dissipation capacity compared with the existing empirical equations, and therefore they will be useful for the nonlinear static analysis/design methods.

• Journal of the Korea Concrete Institute
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• v.16 no.2 s.80
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• pp.229-240
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• 2004

Many experiments have been performed to investigate eccentric shear strength and unbalanced moment-carrying capacity of flat plate-column connections under combined gravity and lateral load. However, each existing experiment used different test setup, and the shear strength of the connection was different depending on the test setup. Current design methods which were based on the experimental results might not accurately explain the shear strength of the flat plate. In a companion study, based on results of nonlinear finite element analyses, an alternative design method for the plate-column connection was developed. However, in this method, eccentric shear strength of the connection which was required for assessing unbalanced moment-carrying capacity was evaluated by an empirical formula. In the present study, a theoratical approach using Rankine's failure criterion was attemped to investigate failure mechanism of the eccentric shear. Based on the results, an improved strength model of the eccentric shear was developed, and it was verified by comparison with the existing experimental results. By means of the strength model, the design method developed in the companion study was re-verified.

• Proceedings of the Korea Water Resources Association Conference
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• 2006.05a
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• pp.254-258
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• 2006

경제발전 과정에서 급격한 도시화로 인해 건기의 하천 수량은 줄어들고, 비점오염 발생량은 증가하였으며 심지어 하천이 복개되고 직강화되어 홍수 피해 및 수질오염은 더욱 증가하고 있다. 다행히 최근 소득수준의 증가와 여가시간이 확대됨에 따라, 그 동안의 도시화와 산업화로 인한 오염된 하천을 다시 복원하려는 운동이 활발하게 진행되고 있다. 안양천은 이 같은 하천 중 가장 대표적인 하천 중 하나이다. 본 연구에서는 다속성선택법(CE: choice experiments)을 적용하여 안양천이 어떠한 속성을 갖고 있으며 각각의 속성에 대해 안양천 유역주민들의 사회적인 경험과 인식, 그리고 각 속성의 수준간의 상쇄관계(trade-off)를 고려함으로써 소비자선호에 근거한 한계가치(marginal value)를 추정하였다. 2차례에 걸친 예비조사를 통해 안양천이 가진속성을 홍수피해위험, 가뭄시 하천유량, 수질등급, 하천형태로 설정하였고 설문지 작성을 위해 개별 속성들간의 직교성(orthogonality)을 보장해 주는 주효과 직교설계(orthogonal main effects design) 방법을 이용하였다. 작성된 설문지를 이용해 안양천 유역 10개 지자체 거주민을 대상으로 설문조사를 실시하였고 설문조사 결과를 통해 추정된 각 속성에 대한 가구당 매월 한계지불의사액은 하류구간의 잠재적 홍수피해(PFD가 0.5)가 보통일 경우는 1,764.8원/월, 낮을(PFD가 0.5이하) 경우는 1,783.8원/월, 가뭄시 하천수가 목표유지유량보다 는 작지만 매말라 있지 않은 경우에는 1,496.8원/월, 가뭄시 하천수가 목표유지유량 이상 유지될 경우에는 2,274.9원/월, 수질 등급 3등급일 경우 1,721.5원/월, 수질 등급 2등급일 경우 1,764.4원/월, 하천둔치를 체육공원과 산책로를 조성할 경우 2,078.1원/월, 하천둔치를 자연친화형 하천으로 보존할 경우 2,441.7원/월으로 분석되었다. 또한 추정된 가구당 매월 한계지불의사액을 통해 각 지자체별 정책대안의 기대효과에 대한 편익을 추정하였다. 각 기대효과는 치수, 수량확보, 수질, 생태로서 각각의 기대효과에 대해 가장 높은 편익을 나타내는 것은 부천시의 하수처리장 건설로서 이는 매년 926.8억원의 편익이 발생되며 그 다음으로는 부천의 하수관거정비(역곡)로서 이는 매년 601.5억원의 편익이 발생하는 것으로 추정되었다.

• Journal of the Korean Institute of Intelligent Systems
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• v.14 no.6
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• pp.752-758
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• 2004

In this paper, we proposed an adaptivefuzzy sliding control algorithm using gradient descent method to reduce chattering phenomenon which is viewed in variable control system. In design of FLC, fuzzy control rules are obtained from expert's experience and intuition and it is very difficult to obtain them. We proposed an adaptive algorithm which is updated by consequence part parameter of control rules in order to reduce chattering phenomenon and simultaneously to satistfy the sliding mode condition. The proposed algorithm has the characteristics which are viewed in conventional VSC, e.g. insensitivity to a class of disturbance, parameter variations and uncertainties in the sliding mode. To demonstrate its performance, the proposed control algorithm is applied to an inverted pendulum system. The results show that both alleviation of chattering and performance are achieved.