• Annual Conference on Human and Language Technology
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• 2005.10a
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• pp.145-150
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• 2005

본 논문에서는 자연어 처리 연구에서 이용되는 품사 표지 부착 말뭉치의 오류 검증 방안에 대해 제안한다. 현재까지의 품사 표지 부착 말뭉치들은 정제보다는 구축에 중점을 두고 있으며, 기존의 오류 검출과 정정 방안에 관련된 연구들은 기 구축된 말뭉치를 대상으로 한 것이 아니라, 품사 표지 부착 시스템의 후 처리에 집중하고 있다. 형태소 분석기나 품사 표지 부착 시스템의 학습에 이용되는 품사 표지 부착 말뭉치가 오류 검증 단계를 거친다면 이 시스템들은 좀 더 높은 신뢰성을 가지게 될 것이다. 본 논문에서는 품사 표지부착 말뭉치 검증을 위한 어절 분할 오류, 철자 오류, 표지 부착 오류, 형식 오류, 일관성 오류의 5가지 오류 유형과 검증 방안을 제안한다. 또한 제안한 방법에 따라 세종 계획의 형태소 분석 말뭉치의 오류를 검증해 보았으며, 그 결과 말뭉치 오류 정제가 말뭉치의 신뢰도를 향상시킬 수 있음을 보인다.

• Proceedings of the KSRS Conference
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• 2009.03a
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• pp.105-110
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• 2009

현재 NASA에서 제공되는 MODIS 지표반사율자료(MOD09)는 MODIS영상을 이용한 각종 주제자료들의 중요한 입력 자료로 사용되고 있으며, MODIS 지표반사율 자료에 대한 객관적인 검증연구가 필요한 실정이다. 따라서 본 연구에서는 MOD09의 검증관련 초기 연구로서, 남한에 분포하는 불변성 타겟(invariant target)을 대상으로 2006년 일별 250m MODIS 지표반사율자료(MOD09GQK)자료의 객관적 검증을 시도하였다. 우선, MOD09 QA(Quality Assurance)자료를 이용하여 구름의 영향을 받은 화소를 제거한 후, 수치지도와 토지피복도를 이용하여 정의한 불변성 타겟에 해당되는 MOD09영상의 화소값을 추출하였다. 이와 같이 추출된 시계열 MOD09GHK영상의 화소값에 1차 회귀분석을 적용하여 이상 반사율 값을 탐지하고, 그 원인을 분석하였다. 검증 결과 나지지역에 대해서 0.0186의 RMSE값이 나타났으며, 인공물의 경우 0.2891의 RMSE값을 보였다. 발생된 이상 화소를 살펴보면, 구름, 그림자, 눈에 영향에 의해 발생한 것도 있으며, 원인을 알 수 없는 이상 화소들도 분포하였다. 향후 연구에서는 한반도 전역의 MODIS 시계열 반사율영상을 대상으로 MODIS 대기보정알고리즘과 입력인자의 적합성을 판단하기 위한 연구를 진행할 예정이다.

• KIISE Transactions on Computing Practices
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• v.21 no.7
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• pp.476-481
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• 2015

We have parallelized the cumulative sum (CUSUM) test of NIST's statistical random number test suite in a CUDA environment. Storing random walks in an array instead of in scalar variables eliminates data dependence. The change in data structure makes it possible to apply parallel scans, scatters, and reductions at each stage of the test. In addition, serial data exchanges between CPU and GPU are removed by migrating CPU's tasks to GPU. Finally we have optimized global memory accesses. The overall speedup is 23 times over the sequential version. Our results contribute to improving security of random numbers for cryptographic keys as well as reducing the time for evaluation of randomness.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.34 no.2
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• pp.617-626
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• 2014

Lately, losses and damage from natural disasters have been increasing. Researchers across various fields in Korea are trying to come up with a response plan, but research for evacuation plans is still far from satisfactory. Hence this paper proposes a model that could find an optimized evacuation route for when disasters occur over wide areas. Development of the model used methods including the Dijkstra shortest path algorithm, feasible path method, genetic algorithm, and pareto efficiency. Computations used parallel computing (SPMD) for high performance. In addition, the developed model is applied to a virtual network to check the validity. Finally the adaptability of the model is verified on a real network by computating for Gumi 1stNational Industrial Complex. Computation results proved that this model is valid and applicable by comparison of the fitness values for before optimization and after optimization. This research can contribute to routing for responder vehicles as well as planning for evacuation by objective when disasters occur.

• The Journal of the Korea Contents Association
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• v.17 no.12
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• pp.600-616
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• 2017

This study examined the mediating effects of strengths use on the relation of strengths knowledge and career decision level among 393 college students. To analyze the data, the structural equation modeling were used. Finally, the mediating model examined the differences between goal orientation(validation-seeking orientation, growth-seeking orientation) of Dykman by carrying out of multi-group analysis. The results were as followed. First, strengths use partially mediated the relationship between strengths knowledge and career decision level. Second, the mediating model showed variation in different goal orientation type group. In other words, strengths knowledge occurs more severely and distinctively impact on career decision level in growth-seeking group than validation-seeking group. Based on the findings, implications for counseling practice, limitations of this study and recommendations for future study were discussed.

• The Journal of Korean Academy of Sensory Integration
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• v.14 no.2
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• pp.11-21
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• 2016

Objective : The purpose of the study is to examine the construct validity and internal consistency of the Sensory Processing Scale for Children (SPS-C). Method : 117 participants who are aged 3 to 5 years old has been evaluated by the Sensory Processing Scale for Children (SPS-C) for this study and the period is from November 2014 to June 2016. Statistics used for data analysis is factor analysis for construct validity and Cronbach's alpha for internal consistency. Results : In the factor analysis, the items in auditory, visual, and tactile showed a high factor loading, respectively. The items in vestibular and proprioceptive were overlapped. For internal consistency, Cronbach's alpha was .728 for whole scale which is high level. And Cronbach's alpha of each factor was range within .326~.636. Conclusion : The results of the psychometric test in this study evidence that the SPS-C is valid and reliable to be utilized. Further study need to examine various validities and reliabilities as well as standardization.

• 한국지구물리탐사학회:학술대회논문집
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• 2006.06a
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• pp.73-78
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• 2006

To verify reinforcing effect of grouting materials on the water leakage region in dike, we performed various hydraulic test and we also applied electric resistivity survey including electrical resistivity tomography(ERT) to see resistivity variation before and after grouting. As the results of dipole-dipole array survey along dike, resistivity distribution after grouting was without noticeable spatial variation. Long term resistivity monitoring results at dike with Schlumberger array electric resistivity survey showed that the decreasing region of apparent resistivity and one dimensional inversion results were the occupied region by grout after grouting. From the ERT using check holes to inspect the effect of grouting, we could find that the ERT is quite effective to evaluate spatially grout region in dike.

• Geotechnical Engineering
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• v.13 no.1
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• pp.5-18
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• 1997

In order to make reliable ground shock predictions in saturated geological media, it is necessary to use multi -phase material models and numerical codes. This paper presents the results of theoretical study of the fundamental behavior of multi-phase porous media subjected to high dynanlic loadings, and deals with the development of numerical code MPDAP with JWL(Jones-Wilkins-Lee) model, which is capable of considering the kinds and characters of explosives. To check the global equilhorium equations of the numerical code, we carried out some verifications. In the cases of the elastic spherical wave propagation in a single phase medium, one-dimensional linear ronsolidation, and one timensional wave propagation in saturated linear elastic soils and rocks, the results calculated by MPDAP show close agreement with closed-form solutions or numerical solutions generated with two phase code.

• Journal of the Korean Society of Child Welfare
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• no.36
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• pp.231-259
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• 2011

The purpose of this study is to examine the validity and reliability of the Parental Satisfaction Scale for Child Care Centers, which modified the Client Satisfaction Scale (CSS; Kim, 2009). The subjects of the study were 652 parents of children who were between the ages of one to five and who attended child care centers. The five-point rating scale consisted of 21 items with two sub-dimensions. The results from an exploratory factor analysis identified that there are two dimensions in this scale. Thus, in terms of the face validity of this scale, a two-dimensional scale with 21 items is found to be appropriate. However, the items that consist of the two sub-dimensions are found to be different from that of CSS. The concurrent validity and internal consistency reliability of the revised scale are relatively high. Also, the mean between the upper and lower groups with regard to item discrimination show significant difference. We conclude that the original CSS with minor revisions can be used as a valid and reliable instrument to assess parental satisfaction on child care centers.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2009.11a
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• pp.66-69
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• 2009

본 연구는 사용자에게 편리하고 자연스러운 인터페이스를 제공하는 직관적 제스쳐 인터랙션의 요소 추출에 대해 분석하였다. 대학생 30명을 대상으로 마우스와 키보드의 8가지 기본 인터랙션 요소를 제시하여 그 요소와 적합한 의미의 어휘를 선택하도록 설문을 실시하였다. 다음으로 선택한 어휘가 가지는 의미를 표현한 제스쳐를 빈도수에 따라 최종 선정한 후 검증을 실시하였다. 첫 번째 설문시 마우스의 상하좌우 이동과 ESC의 의미는 30명 전원이 상하좌우 이동과 취소라는 동일한 의미를 선택하였다. 마우스의 좌클릭은 30명 중 28명이 선택, 우클릭은 26명이 설정 탐색, 키보드 엔터의 경우 25명이 실행이라는 의미를 선택하였다. 최종 선정된 제스쳐의 검증 결과 상하좌우 이동과 취소 요소로 제시했던 손전체 상하좌우 이동과 손전체X는 70~100%의 높은 결과가 도출되었으며, 선택 요소로 제시했던 정지상태 검지손 아래는 60%의 결과가 도출되었다. 설정 탐색을 위해 제시되었던 손전체 회전과 중지손 클릭 중 손전체 회전이 60%의 결과를 도출하였으며, 중지손 클릭은 선택과 하단 이동이 73%로 설정 탐색의 요소로는 적합하지 않은 것으로 도출되었다. 실행 요소로 제시했던 손전체 두번 클릭은 27%의 낮은 검증 결과가 도출되어 적합하지 않은 것으로 제시되었다.