• 한국HCI학회:학술대회논문집
• /
• 2007.02a
• /
• pp.386-392
• /
• 2007

최근 들어 손 제스처를 인간-기계 인터페이스에 활용하는 연구가 많아지고 있다. 그 중에서 수화 인식은 청각장애인과 일반인 사이의 원활한 의사 소통을 하게 해 주는 인터페이스로서 중요성이 날로 더해가고 있다. 하지만 기존의 수화 인식 연구는 사용자 개개인의 수화 동작의 차이를 고려하지 않고 다수 사용자를 위한 모델을 사용하기 때문에 사용자에 따라 인식률이 낮아지게 된다. 이러한 점을 보완하기 위해 본 논문에서는 개개인의 수화 동작 특성을 반영하여 시스템이 사용자에게 적응해 가는 과정을 다루고자 한다. 특히 점진적인 사용자 적응에 있어서 가장 문제가 되는 것은 어떻게 비관측된 상태(unobserved state)의 파라미터를 수정할 것인가 하는 것이다. 이를 위해서 본 논문에서는 동작 유사도와 적응 추이에 의한 추정을 통해 비관측된 상태의 모델 파라미터를 수정한다. 실제 청각 장애인들로부터 획득한 데이터베이스를 사용하여 제안한 방법이 기존 방법에 비해 더욱 빠르게 사용자의 특성을 시스템에 반영하고 인식률을 향상시킨다는 것을 실험을 통해 보인다.

• Proceedings of the KIEE Conference
• /
• 2007.04a
• /
• pp.301-303
• /
• 2007

This paper presents user adaptation methods to overcome limitations of a user-independent model and a user-dependent model in a Korean sign language recognition system. To adapt model parameters for unobserved states in hidden Markov models, we introduce new methods based on motion similarity and prediction from adaptation history so that we can achieve faster adaption and higher recognition rates comparing with previous methods.

• Electronics and Telecommunications Trends
• /
• v.22 no.5
• /
• pp.35-45
• /
• 2007

전방감지용 밀리미터파 레이더는 밀리미터파를 이용하여 자동차 등에 부착하여 송신파와 수신파 사이의 도플러 주파수 편이를 이용하여 선행차량 또는 전방의 장애물과의 거리와 상대속도를 판별하는 장치로서 적응형 순항제어 시스템(adaptive cruise control system) 등에 이용되는 핵심 기술이다. 적응형 순항제어 시스템이란 레이더 센서를 통하여 전방 선행 차량, 장애물의 속도 및 거리를 측정하여 차량의 충돌 경고, 주행 상황에 따른 자동적인 감속 및 가속, 정속 등 안전주행을 가능하도록 하는 기술이다. 본 기술 동향 분석보고서는 전방감지용 레이더 센서에 관한 기술 동향을 살펴보기 위하여 미국, EU, 일본, 한국의 전방감지용 레이더 센서에 관한 특허를 1991년부터 2005년까지의 특허출원을 중심으로 연도별 추이와 국가별 특허출원 동향, 출원인별 특허출원 동향 등을 분석하여 전방감지용 레이더의 세계 기술 추이에 대하여 알아보았다.

• Proceedings of the Korean Institute of Intelligent Systems Conference
• /
• 2007.04a
• /
• pp.273-273
• /
• 2007

지문인식에 관한 전반적인 사항 즉 센서발전추이와 센서 종류, 적응 알고리즘을 소개하고 관련 제품과 산업 분야에 대한 다양한 적용과 응용을 제시하고자 한다.

• Journal of Korean Society of Industrial and Systems Engineering
• /
• v.21 no.45
• /
• pp.113-120
• /
• 1998

본 논문에서는 에너지 함수의 직접적인 평가에 기초해 홉필드 신경망을 진화시킴에 따라 적응적으로 에너지 계수를 결정하는 기법을 제시하고자 한다. 이 기법에 근거하여 구해지는 계수들의 효과를 검증하기 위해 응용 모델인 TSP(Traveling Salesman Problem)에 적용하여, 실험을 통한 계수 값의 변화 추이를 분석하고 그 결과를 기존의 기법들과 비교한다. 또한 제안된 방법에 필수적인 각 단계에서의 에너지 값의 평가를 위한 부가적인 연산을 줄이기 위해 단계적으로 증감분만을 계산하는 효율적인 연산법을 제시한다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2019.05a
• /
• pp.275-277
• /
• 2019

The purpose of this study is to classify the topics related to the suicide papers published so far and to identify the proporations of the main topics and the trends of the topics over the past 20 years. For this purpose, a text mining technique used in big data analysis was used as a data base of the Korean Journal of Citation Index (KCI), where information sharing about the papers is most active. This study, which grasps the trends of suicide related research according to the changes of the times, will become a basic data for establishing a strategy to adapt the academic direction related to suicide in the future.

• The Journal of the Convergence on Culture Technology
• /
• v.9 no.6
• /
• pp.677-683
• /
• 2023

The purpose of the study was to estimate the trajectories of elementary school adjustment in grades 1 through 4. For the purpose, the Korean Children's Panel data were analyzed using potential growth model and the growth mixture model. As the result, the linear model was selected as the optimal model. The four potential groups were derived as trajectories: high-level maintenance, low-level maintenance, low-level increase, and high-level decrease. In terms of group distribution, the most children were in high-level maintenance group and then low-level maintenance, low-level increase, and high-level decrease in order. Based on the findings that trajectories of elementary school adjustment changes as children growth, we suggest that schools and families need to carefully investigate and support their school adjustment in individual levels.

• Korea journal of population studies
• /
• v.28 no.2
• /
• pp.63-95
• /
• 2005

In the era of globalization, a significant number of young students go abroad to learn English. By reviewing the trends and characteristics of this phenomenon, this study will focus on the adjustment of young Korean students in Australia. During June and July 2002, two questionnaire surveys were conducted for year 7 to year 12 Korean students at the Saturday Schools in Sydney Australia and for the youth group at the Sydney Catholic Church. More data was collected from interviews with 31 Korean teachers at the Saturday Schools and Linfield Korean school, as well as observations of the students in the Sydney area. The study divided the students into four groups: 1) Korean immigrant students, whose parents immigrated to Australia; 2) Individual Korean students who went alone to Australia to study; 3) Students whom live in Australia with one parent (usually their mother), whilst the other parent (usually their father) who provides financial support by working in Korea; and 4) students who accompanied their parents whom were dispatched for temporary employment or study in Australia. Moreover the study focused on the following; their academic performance, school activities, motivation, social relations, and their overall satisfaction with their studies and their stay in Australia. The findings indicated that the temporary overseas Korean students, especially those that are not with their parents do not adjust as well as the Korean immigrant students. The students who were not accompanied by their parents to Australia had the most difficulties adjusting as they were more vulnerable and fell behind with their studies. Therefore, the results support the concerns of Korean teachers in Australia about parents sending young students alone abroad.

• Korean Journal of Social Welfare
• /
• v.62 no.1
• /
• pp.343-365
• /
• 2010

It is a follow-up study on acculturation types and adaptation level to South Korea among North Korean defecting adolescents who participated in the study with the same purpose five years ago(2003). The study of 2003(1st year study) was done with 90 adolescents, out of whom 46 participated in this study(2nd year study). The data from 46 subjects who participated in both 1st and 2nd studies were analyzed. The results on individual acculturation type showed that 40% of the respondents who belonged to 'marginal' or 'separated' types in the 1st study were changed to 'assimilated' or 'integrated' types in the 2nd. Twenty percent changed from 'assimilated' or 'integrated' types in the 1st study to 'marginal' or 'separated' in the 2nd. Furthermore, the higher is the acceptance level of South Korean culture, the lower are their psycho-social problems and the higher is the satisfaction level of daily lives in South Korea. While the higher is the preservation level of North Korean culture, the higher is aggression. Based on the results, the study developed discussion on diverse alternative plans for helping North Korean defecting adolescents in successfully adjusting to the South Korean society.

• The Korean Journal of Applied Statistics
• /
• v.21 no.2
• /
• pp.201-210
• /
• 2008

The government employment statistics show the close comovement of the whole domestic unemployment rate with the youth unemployment rate for the past 10 years, implying the dominant influence of the unemployment of the youth age. This study investigates the structure of the short-run variation and the process of the long-run adjustment in the unemployment rates of the youth and middle ages by formulating the dynamic equation system. The estimation result consistently reflects the vulnerability of the youth class in the aggravation of the employment condition. The effect of exogenous changes is found to be persistent in the unemployment rates of both ages, which appear to have similar structures of the long-run time path. However, the youth unemployment rate turns out to have a relatively long adjustment process to the long-run equilibrium.