• Proceedings of the Korea Information Processing Society Conference
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• 2013.11a
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• pp.1354-1357
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• 2013

최근 다양한 센서들이 일상생활에 활용되어, 일정한 환경에서 사람의 행동을 분류하고 인식하기 위한 연구들이 활발하게 진행되고 있다. 본 연구에서는 2개의 진동센서 값과 1개의 적외선 센서 값을 은닉 마코프 모델에 적용하여 침대 위에 있는 사람의 3가지 행동유형-눕기, 뒤척임, 일어나기-을 분류하고자 한다. 3개 센서 값의 특징들을 기초로 은닉 마코프 모델에 학습시키고, 특징집합과 학습 데이터량을 변화시키면서 사람의 행동유형에 대한 인식 실험을 수행하였다. 특징 개수 혼합에 따른 인식률의 차이는 거의 없는 것으로 나타났으나, 학습 데이터량을 증가시켜 가면서 수행한 실험에서는 인식률이 평균 78.127%로 향상되는 성과를 거두었다.

• Journal of Korean Home Economics Education Association
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• v.22 no.2
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• pp.45-60
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• 2010

The purpose of this study was to analyze the effect of knowledge and perception of environmental problems on pro-environmental behavior of youth. The data used for this study were collected using questionnaire. The sample for this study consisted of 654 junior and high school students living in Seoul and Gyeong-gi Province. Descriptive statistics and multiple regression analysis were used to analyze the data. The following is a summary of the major findings. (1) The significant variables affecting pro-environmental behavior of youth were need of environmental education, source of environmental knowledge, level of perception on air pollution and scarcity of resources and energy, sex and total amount of allowance of students. These variables explained 20.5% of variance of pro-environmental behavior. (2) Environmental education related variables were the best predictor of pro-environmental behavior; knowledge of environmental problem variables had limited predictive power. (3) Recommendations for teaching-learning strategies have been suggested to enhance youth's pro-environmental behavior in school.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2018.06a
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• pp.253-254
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• 2018

본 논문은 비디오기반 행동인식을 연구하였으며, 기존의 구조를 참조하여 더 높은 인식률을 위한 새로운 구조를 제안한다. 딥러닝의 기본인 CNN과 RNN을 베이스로 한 구조이며 UCF-101 이라는 Data Set를 사용하였다.

• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.368-372
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• 2009

The method to get the feature have been proposed to recognize the user activity by setting specific action for making the user independent result in previous research. However, it was only applied in specific environment and it was difficult to implement because it regarded only some specific feature as the recognized object. To improve this problem we detected the normality/abnormality of the activity based on the repetition and the continuity of the past activity pattern. We applied the unsupervised learning method, not supervised, and clustered the data which was collected within a certain period of time and we regarded it as the basis of the evaluation of the repetition. We demonstrated to be able to detect the abnormal activity based on wether the data was generated repeatedly.

• Korean Journal of Culture and Social Issue
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• v.24 no.4
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• pp.519-539
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• 2018

This study investigates the impact of organizational socialization tactics on newcomers' organizational citizenship behaviors. We explains this relationship with the concept of perceived organizational support, which refers to the extent to which individuals perceive that the organization recognizes their contributions and takes care of their well-being. We expect that the more institutionalized the organization's socialization tactics are, the more organizational support individuals perceive, consequently increasing the performance of organizational citizenship behaviors. We performed a survey targeting 450 newcomers in domestic companies, and adopted 382 data for path analyses based on the structural equation modeling. As the result, in all the three dimensions of socialization tactics (content, context, social), the extent to which socialization tactics are institutionalized is positively related to the perception of organizational support. It also has the positive relationship with individuals' organizational citizenship behaviors, being fully mediated by the perceived organizational support. More specifically, context socialization tactics shows the highest level of impact both on the perceived organizational support and organizational citizenship behaviors, whereas social tactics has the lowest level of impact. These results imply that the range of effects the organizational socialization has on the newcomers' attitudes and behaviors should be more extended and detailed.

• Journal of dental hygiene science
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• v.13 no.4
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• pp.449-460
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• 2013

This study analyzes the processes of change in oral health behaviors induced by oral health education for 23 university students. To this end, we analyzed the changing patterns of the stages of change and motivational components for each oral health behavior. Additionally, we performed an in-depth interview-based investigation of the factors influencing such motivational components. Oral health education was performed twice with a concrete purpose of changing the participants' behaviors in complying with the practice of proper brushing and flossing as the main oral health management, and checking the nutrient facts as a good dietary habit. Upon completion of these two sessions of oral health education, the level of change in oral health behavior was assessed by measuring the stages of change and motivational components for each oral health behavior. In order to gain an in-depth understanding of the reasons for the changes that were demonstrated more markedly during the second education session than during the first session, collective interview surveys were carried out after the second session. The contents of the recorded interviews were categorized into subscales of distinctive concepts on the basis of the items of a health behavior model. The study had the findings as below. First, after the first and second education sessions, some behaviors showed positive changes from lower to higher levels of practice. Second, self-efficacy about oral health behavior was high or perceived barriers were low when its necessity and benefits were clearly perceived. Third, educational features such as the practice and participation-centered education, and examining their own oral conditions influenced the participants' oral health awareness and behavioral changes. There is a need for oral health education capable of leading to practical behavioral changes by establishing concrete strategies of deriving various motivational components at each stage of the processes of change.

• Proceedings of the Korea Information Processing Society Conference
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• 2007.11a
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• pp.63-65
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• 2007

본 연구에서는 비디오 영상데이터로부터 인간의 행동패턴의 인식기술 및 상황인식 기법을 소개하고 이를 활용한 실용적 응용으로서 지능형 감시시스템을 제안한다. 순차적 영상신호에서 형태기반의 정적 특징과 목표물의 움직임 요소를 측정한 동적 특징을 결합한 형태의 특징 표현 및 추출기법과 행동패턴 및 상황패턴에 대한 인식 모델을 제시하고 구현한다. 모듈구조의 시스템에서 영상처리 모듈과 패턴인식 모듈은 특징추출 및 인식과정을 수행하며, 감시영상에 대한 상황판단 기능은 데이터베이스 모듈과 연동하여 효과적인 검색기능과 경보기능 등을 지원한다. 이러한 기능은 기존의 시스템에서 운영자의 지속적인 감시작업과 상황판단 작업을 보조 또는 대행하여 수행할 수 있을 뿐만 아니라 데이터저장 공간을 획기적으로 줄이고 부수적으로 효율적인 영상의 조회기능 및 추적기능 등의 유용한 인터페이스를 지원한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2021.11a
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• pp.1051-1054
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• 2021

본 시스템은 홈 CCTV 를 이용해 집 안 사용자의 감정인식, 행동인식을 통해 스마트홈 자동화할 수 있는 시스템으로, 인식된 감정에 맞춰 음악 재생, 조명 조절을 하거나 간단한 동작만으로 IoT 단말을 컨트롤 한다. 또한 실시간으로 IoT 장비들이 동작할 수 있도록 마이크로 서비스 아키텍처로 감정인식과 행동인식 서비스를 설계하여 구현하는 것이 특징이다. 이는 스마트홈 내에서 더 편리하고 가치 있는 집안 환경을 구현할 수 시스템을 제공한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2022.05a
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• pp.641-642
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• 2022

단일 데이터로부터의 이동 객체에 대한 행동 인식 연구는 데이터 수집 과정에서 발생하는 노이즈의 영향을 크게 받는다. 본 논문은 영상 데이터와 센서 데이터를 이용하여 다중 융합 네트워크 기반 이동 객체 행동 인식 방법을 제안한다. 영상으로부터 객체가 감지된 영역의 추출과 센서 데이터의 이상치 제거 및 결측치 보간을 통해 전처리된 데이터들을 융합하여 시퀀스를 생성한다. 생성된 시퀀스는 CNN(Convolutional Neural Networks)과 LSTM(Long Short Term Memory)기반 다중 융합 네트워크 모델을 통해 시계열에 따른 행동 특징들을 추출하고, 깊은 FC(Fully Connected) 계층을 통해 특징들을 융합하여 행동을 예측한다. 본 연구에서 제시된 방법은 사람을 포함한 동물, 로봇 등의 다양한 객체에 적용될 수 있다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.1
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• pp.521-529
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• 2020

This paper attempted to empirically analyze whether or not ethical behavior at the individual level has a positive effect on both companies and employees. In addition, based on the social exchange theory, a hypothesis was established that perceived supervisory support has a positive moderating effect on the relationship between ethical behavior, job satisfaction, and job performance. As a result of analyzing a questionnaire given to 238 sales employees, It was first verified that ethical behavior by sales staff had a positive effect on job satisfaction and performance, as expected in the hypothesis. Second, the moderating effect of perceived supervisory support was significant only in the relationship between the ethical behavior of the salesperson and job performance. On the other hand, the moderating effect of perceived supervisory support on the relationship between ethical behavior and job satisfaction was not verified. Based on the results of this study, the implications and future directions of study are presented.