• Geotechnical Engineering
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• v.10 no.1
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• pp.71-82
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• 1994

According to the field measurement of dredging-reclaimed land, the actual self-weight consolidation settlement has been frequently reported to be less than the predicted values based on the laboratory tests results. The author estimates that one of the reasons is the reduction of the compressibility due to the sedimentation of the dredging material, Furthemore, the aging effect is ignored in the consolidation characteristics of the very low stress range as a pump dredging-reclaimed land. In this paper, a series of seepage consotidation tests has been carried out by applying the seepage force to the specimen prepared by sedimentation in consolidmeter in order to clarflfy the aging-effect on the compressibility of dredging clayey soil, Also, with a view to overcome unstable consolidation solution occurring in the case where the initial water content is higher as pumpdredging reclaimed land, the finite difference analysis technique using predictorforrector method is suggested that it gets good agreement with ezperimental results. Finally, the compressibility of the dredging clayey soil is depended on self-weight consolidation time.

• The KIPS Transactions:PartB
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• v.13B no.1 s.104
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• pp.63-70
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• 2006

In general, a corpus contains lots of linguistic information and is widely used in the field of natural language processing and computational linguistics. The creation of such the corpus, however, is an expensive, labor-intensive and time-consuming work. To alleviate this problem, annotation tools to build corpora with much linguistic information is indispensable. In this paper, we design and implement an annotation tool for establishing a Korean dependency tree-tagged corpus. The most ideal way is to fully automatically create the corpus without annotators' interventions, but as a matter of fact, it is impossible. The proposed tool is semi-automatic like most other annotation tools and is designed to edit errors, which are generated by basic analyzers like part-of-speech tagger and (partial) parser. We also design it to avoid repetitive works while editing the errors and to use it easily and friendly. Using the proposed annotation tool, 10,000 Korean sentences containing over 20 words are annotated with dependency structures. For 2 months, eight annotators have worked every 4 hours a day. We are confident that we can have accurate and consistent annotations as well as reduced labor and time.

• Journal of the Korean Vacuum Society
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• v.19 no.5
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• pp.365-370
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• 2010

The growth interruption effects on growth mode of the GaAs and AlGaAs epitaxial layers grown on GaAs substrate by molecular beam epitaxy were investigated. Growth process of the epitaxial layers as a function of the growth interruption time was observed by reflection high energy electron diffraction (RHEED). The growth interruption time was 0, 15, 30, 60 s. The GaAs/$Al_{0.3}Ga_{0.7}As$ multi quantum wells (MQWs) with different growth interruption time were grown and its properties were investigated. RHEED intensity oscillation and optical property of the MQWs were dependent on the growth interruption time. When the growth interruption time was 30 s, interface between the well and barrier layers became sharper.

• Journal of Internet of Things and Convergence
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• v.6 no.4
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• pp.39-48
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• 2020

This study intends to the estimate the determinants and state dependence of long-term care services in Korea. For this purpose, we analyzed the transition patterns among three states of long-term care service utilization over time by using the Korea Welfare Panel Study data with the random effect multinomial logit model. It is found that the result showed a strong state dependence in long-term care service utilization. Especially, long-term care insurance for the elderly showed a strong state dependence among others. Among the individual demographic characteristics, the higher the age, the higher the probability of using long-term care insurance for the elderly, while the lower the probability when married. The characteristics of the residential region showed that the residents of the urban-rural integrated region had a significantly higher probability of using long-term care insurance than the reference region. The results of this study suggest that the long-term care service users have a strong state dependence, which means that it is important to take into account the increase in the utilization period of existing users in future demand forecasting.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.23 no.4
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• pp.183-188
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• 2023

Game object inheritance and multiple components allow for visualization of system architecture, good code reuse, and fast prototyping. On the other hand, objects are more likely to rely on high latency between game objects and components, static casts, and lots of references to things like null pointers. Therefore, It is important to design a game in such a way so that the dependency of objects on multiple classes could be reduced and existing codes could be reused. Therefore, we designed the game to make the classes more modular by applying Dependency Injection and the design patterns proposed by the Gang of Four. Since these dependencies are attributes of the game object and the injection occurs only in the initialization pass, there is little performance degradation or performance penalty in the game loop. Therefore, this paper proposed an efficient design method to effectively reuse APIs in the design and implementation of survival games.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.12
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• pp.5023-5028
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• 2010

In this paper, an image based LED design simulator is proposed to reduce LED design cost mostly contingent on a design expert. Current techniques about LED design schemes have mostly treated text-based LED simulators. The proposed method is to provide novel and easy simulator for LED designers. At first, image filters including histogram equalization, bicubic interpolation. and scaling are employed. Color mapping and special effects are added as well. Experimental results classified into several categories along with running times are shown to validate the proposed methods.

• Proceedings of the KIEE Conference
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• 2009.07a
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• pp.125_126
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• 2009

전력시스템 전자기 과도현상은 시간 영역에서 정확하고 효과적으로 해속되어져야 한다. 그러나 대규모 전력시스템을 상세하게 표현하기 위해서는 엄청난 계산량이 필요하다. 따라서 전력시스템 과도현상을 해석하기 위하여 전력시스템의 작은 부분은 상세하게 표현하고, 나머지 부분은 효과적으로 등가 시스템이 필요하다. 본 논문에서는 모든 주파수 영역에서 등가 시스템을 개발하기 위하여 벡터 적합을 이용하여 Z 영역 유리함수 계수를 추정하여 주파수 의존 등가 시스템을 개발하였다. 개발한 FDNE의 우수성을 입증하기 위하여 테스트 시스템에 적용하여 시스템이 고장시 전자기 과도현상 및 고조파 평가를 비교 검토하였다.

• Electrical & Electronic Materials
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• v.5 no.4
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• pp.439-445
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• 1992

최근 광자기 기록매체로 주목받고 있는 RE-TM계 비정질 박막을 T $b_{x}$ (F $e_{0.9}$ $Co_{0.1}$)$_{100-x}$ (x=14, 17, 20, 23, 27[at%])의 조성비를 갖는 모합금을 만든후 진공증착방법으로 합금박막을 제작하였다. 각시료의 조성에 따른 자기광학효과를 알아보기 위하여 80K부터 600K에서 포화자화( $M_{s}$ )와 보자력( $H_{c}$)에 대한 온도의존성과 자기이방성상수(Ku), Polar Kerr 이력곡선을 측정하였다. 또한 Curie 온도 근처에서 열처리 시간에 따른 자기 토크 곡선의 변화를 분석 함으로써 합금박막 표면의 산화정도를 정성적으로 평가할 수 있었다. 실험결과 T $b_{22.72}$(F $e_{68.78}$ $Co_{8.5}$)인 시료가 상온에서 8.4KOe의 보자력을 가졌으며 T $b_{x}$(x=23[at%])인 경우가 가장 큰 수직자기이방성을 나타냈다. Polar Kerr 이력곡선은 Tb함량 x=25~26[at%]에서 부호가 반전됨을 알 수 있었다.다.다.다.

• Proceedings of the Korean Information Science Society Conference
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• 2000.04b
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• pp.453-455
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• 2000

기하급수적으로 증가하는 인터넷의 정보량에서 최적의 정보를 찾고자 하는 사용자의 요구가 증가함에 따라 개별적 사용자에게 필요한 정보만을 제공하는 것이 필요하다. 이러한 사용자의 요구를 충족시키기 위해 사용자의 행동을 관찰하고 학습하여 사용자 대신 문서를 수집하는 웹 문서 추천 에이전트의 필요성이 대두되었다. 본 논문에서는 웹 문서 추천에이전트에서 사용되는 프로파일을 효과적으로 생성하고 학습하기 위한 문서 표현 방법, 특징 선택법을 제안한다. 제안된 문서 표현 방법은 슬라이딩 윈도우 방법을 통해 인접한 단어쌍의 문맥 정보를 이용하고, 의존 구조를 이용하며 사용자의 관심 변화에 빨리 적응 할 수 있도록 시간에 대한 가중치를 반영한다. 제안된 방법으로 프로파일을 구성한 웹 문서 추천 에이전트는 사용자의 관심 분야를 효과적으로 반영하고 관심 변화에 빨리 적응하여 사용자에게 알맞은 문서를 추천한다.

• Journal of the KSME
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• v.30 no.2
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• pp.180-187
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• 1990

세라믹 복합재료의 크립 파괴거동의 근원이 되는 크립거동에 대한 해석은 현재까지 제시되어 있 는 것이 거의 전무하여, 세라믹 복합재료의 고온신뢰도는 실험에 의존되어 많은 시간과 노력이 소요된다. 여기서는 해석방법으로 advanced shear-lag 모델을 기본으로 세라믹 복합재료 특성을 고려하여 모델링 해석을 제시하였다. 여러 영향 인자들-보강섬유 형상비, 보강섬유 끝단의 간격, 계면에서의 미끄름계수, 단위 모델안의 보강섬유 배열이 크립거동에 미치는 효과에 대해 인자 변화효과(parametric study)를 관찰하여 실험에 의해 얻은 SiCw/A1$_{2}$O$_{3}$의 크립 결 과와 비교하였다. 모델링 해석을 통해 얻은 특정범위 내의 결과는 실험결과를 수용할 수 있으 므로 이 해석방법을 세라믹 복합재료 크립거동의 한방법으로 이용할 수 있으리라 사료된다.