• 정보처리학회논문지:소프트웨어 및 데이터공학
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• 제7권5호
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• pp.189-194
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• 2018

무인화 기술은 전기, 전자, 기계, 인공지능 기술과 ICT 기술 등 다양한 기술들을 융 복합하는 대표적인 기술이다. 특히 지상 무인화 기술은 군사 분야에서 많은 연구 개발과 발전을 이루고 있으며 활용 영역을 확장하고 있다. 본 연구에서는 특허정보 분석을 위해 새로운 특허정보 분석 방법론을 제시하고, 지상 무인화 기술 관련 특허정보를 본 연구에서 제시한 특허정보 분석 방법을 이용하여 분석하였다. 핵심특허 및 기술을 추출하기 위한 특허정보 분석 프로세스는 6단계로 분석 대상 기술선정, 세부 기술 분류, 특허정보 수집, 특허정보 분석 방법 선정, 특허정보 분석, 마지막으로 핵심특허 및 핵심 기술 추출로 이루어 진다. 세부적으로 지상무인화 기술에 대한 기술 분류를 실시하고, 특허지수인 CPP와 IPC 코드 연결성 분석을 통해 지상 무인화 기술의 핵심기술과 핵심특허를 추출하였다. 제시된 특허정보 분석 방법을 이용한 특허정보 분석 결과는 다양한 분야의 기술에 적용하여 분석이 가능하고, 향후 연구개발 방향을 전망하는 자료로 활용할 수 있다.

• Journal of Information Processing Systems
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• 제12권1호
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• pp.109-128
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• 2016

This paper presents a new combined forecasting method that is guided by the soft set theory (CFBSS) to predict business failures with different sample sizes. The proposed method combines both qualitative analysis and quantitative analysis to improve forecasting performance. We considered an expert system (ES), logistic regression (LR), and support vector machine (SVM) as forecasting components whose weights are determined by the receiver operating characteristic (ROC) curve. The proposed procedure was applied to real data sets from Chinese listed firms. For performance comparison, single ES, LR, and SVM methods, the combined forecasting method based on equal weights (CFBEWs), the combined forecasting method based on neural networks (CFBNNs), and the combined forecasting method based on rough sets and the D-S theory (CFBRSDS) were also included in the empirical experiment. CFBSS obtains the highest forecasting accuracy and the second-best forecasting stability. The empirical results demonstrate the superior forecasting performance of our method in terms of accuracy and stability.

• 한국콘텐츠학회논문지
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• 제3권3호
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• pp.1-10
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• 2003

본 논문에서는 ICT를 활용한 교수 학습에서 효과적으로 이용될 수 있는 평가 모형과 평가 방법들을 연구하였다. ICT를 활용한 교수 학습의 유형에는 정보 탐색하기, 정보분석하기, 정보 안내하기, 협력 연구하기, 전문가와 교류하기, 웹 토론하기, 웹 펜팔하기, 정보 만들기 등의 8가지 유형이 있는데 그 중 가장 많이 활용되고 있는 정보 탐색하기와 정보 분석하기 유형에 대한 평가 모형과 평가 방법을 제시하였다. 현재 ICT활용 수업에서 평가 모형과 방법에 대한 선행연구가 없기 때문에 본 논문에서 제시한 평가 방안은 ICT활용 교수학습의 효과를 높이는데 기여할 것이다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 제37회 하계학술대회 논문집 A
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• pp.228-229
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• 2006

The RCF analysis method is used to analyze small signal stability of power systems including GTO controlled FACTS equipment such as STATCOM. To apply the RCF analysis method in power system small signal stability problems, the state transition equations of power system equipments and power systems with STATCOM are presented. In eigenvalue analysis of power systems by the RCF analysis method, the STATCOM is modelled into the equivalents voltage source model and the PWM switching circuit model. As a result of simulation, the RCF analysis method is very powerful to calculate the oscillation modes exactly after the switching operations, and useful to analyze the small signal stability of power systems with periodically operated switching device such as the STATCOM.

• Journal of Information Processing Systems
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• 제3권1호
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• pp.33-37
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• 2007

Semantic clustering is important to various fields in the modem information society. In this work we applied the Independent Component Analysis method to the extraction of the features of latent concepts. We used verb and object noun information and formulated a concept as a linear combination of verbs. The proposed method is shown to be suitable for our framework and it performs better than a hierarchical clustering in latent semantic space for finding out invisible information from the data.

• Journal of information and communication convergence engineering
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• 제21권4호
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• pp.337-345
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• 2023

In this study, we formulated a method that evaluates Taekwondo Poomsae performance using a series of choreographed training movements. Despite recent achievements in 3D human pose estimation (HPE) performance, the analysis of human actions remains challenging. In particular, Taekwondo Poomsae action analysis is challenging owing to the absence of time synchronization data and necessity to compare postures, rather than directly relying on joint locations owing to differences in human shapes. To address these challenges, we first decomposed human joint representation into joint rotation (posture) and limb length (body shape), then synchronized a comparison between test and reference pose sequences using DTW (dynamic time warping), and finally compared pose angles for each joint. Experimental results demonstrate that our method successfully synchronizes test action sequences with the reference sequence and reflects a considerable gap in performance between practitioners and professionals. Thus, our method can detect incorrect poses and help practitioners improve accuracy, balance, and speed of movement.

• 대한공간정보학회지
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• 제2권1호
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• pp.107-119
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• 1994

현대전은 정보전쟁이라 일컫을 만큼 첨단무기를 운용하는 정보체계의 중요성이 부각되고 있다. 지형분석 기법은 전시에 매우 중요한 요소이기 때문에, 육군은 전산기에 기반을 둔 지형분석체계를 꾸준히 발달시켜 왔다. 본 논문에서는 여러 가지 지형자료를 중첩시켜 분석한 야지기동분석도를 제시하였고 이러한 분석을 통해서 평시 작계임무수행시 최적의 작전계획을 수립할 수 있는 지형정보의 자료기반구축 방법을 제시하였다

• Smart Structures and Systems
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• 제16권1호
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• pp.47-65
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• 2015

A novel finite element (FE) model updating method based on multi-resolution analysis (MRA) is proposed. The true stiffness of the FE model is considered as the superposition of two pieces of stiffness information of different resolutions: the pre-defined stiffness information and updating stiffness information. While the resolution of former is solely decided by the meshing density of the FE model, the resolution of latter is decided by the limited information obtained from the experiment. The latter resolution is considerably lower than the former. Second generation wavelet is adopted to describe the updating stiffness information in the framework of MRA. This updating stiffness in MRA is realized at low level of resolution, therefore, needs less number of updating parameters. The efficiency of the optimization process is thus enhanced. The proposed method is suitable for the identification of multiple irregular cracks and performs well in capturing the global features of the structural damage. After the global features are identified, a refinement process proposed in the paper can be carried out to improve the performance of the MRA of the updating information. The effectiveness of the method is verified by numerical simulations of a box girder and the experiment of a three-span continues pre-stressed concrete bridge. It is shown that the proposed method corresponds well to the global features of the structural damage and is stable against the perturbation of modal parameters and small variations of the damage.

• 한국식품조리과학회지
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• 제22권2호
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• pp.213-221
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• 2006

Although motivation and information search have both been studied continuously and separately as important marketing strategies, the relation between cause and effect has received little research attention. Therefore the objective of this study was to research the causal relationships between motivation and information search method. Frequency analysis and reliability analysis, factor analysis, and SEM(Structure Equation Model) were adopted to analyze the data. Motivation was divided into 5 factors which significantly influenced information search method. Factor 1, 'Reception and congratulation', influenced information search positively through 'newspaper, magazine', and 'word of mouth' but negatively through 'TV-advertising' and 'Flyer, Press copy'. Factor 2, 'Change of dietary life', influenced positively 'TV-advertising'. Factor 3, 'Economic saving', influenced positively 'newspaper, magazine', and 'the e-mail's advertising' Factor 4, 'Preference motivation', influenced negatively 'word of mouth' Factor 5, 'Advertisement and companion's need', influenced positively 'newspaper, magazine', and 'the e-mail's advertising' but negatively 'TV-advertising' As a result, customers appeared to choose various information search methods according to their eating-out motivation. 'The e-mail's advertising', and 'word of mouth' are popular among customers' information search methods. Therefore, food-service corporations need to try eliminating negative images of various advertisements and activate positive word of mouth marketing, promotion through internet.

• 한국컴퓨터정보학회논문지
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• 제11권5호
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• pp.59-67
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• 2006

본 논문에서는 지수평활을 이용한 법원경매 정보 시스템의 낙찰가 예측 방법을 제안하였다. 이 시스템은 권리분석을 위하여 낙찰가를 예측하고, 낙찰예측가에 따라 배당 정보를 제공하도록 설계되어 있으며 이를 구현하기 위하여 물건 자료의 입력 인터페이스와 정보 제공을 위한 웹 인터페이스를 구축하였다. 자료 입력 인터페이스는 자료의 입력, 수정, 삭제 기능을 가지며, 웹 인터페이스는 법원경매 물건을 중심으로 관련 정보를 제공한다. 실시간 정보 제공에 초점을 두고 자동 권리분석이 가능하도록 하기 위하여 낙찰가를 시계열 자료로 표현하여 지수평활을 이용한 낙찰예상가를 예측하는 방법을 제안하고, 기존의 방법과 비교 실험을 통하여 제안방법의 유효성을 검증한다.