• Toxicological Research
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• 제17권
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• pp.17-24
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• 2001

Risk assessment is useful tool making good decisions on the risks of certain hazardous com-pound and suggests safe margin through scientific process using toxicological data, statistical tool, exposure value and relevant variants. The goal of risk management is to protect the public health from hazardous compound based on result of risk assessment having reality. For the suggestion of exact man-aging information, risk assessment must be designed to represent a "plausible estimate" of the exposure to the individuals and to minimize uncertainty. Risk assessment methodology and knowledge are expected to change more rapidly than before and up-to-date methodology should be applied in regulatory aspects through the Agency. For the useful application of risk assessment, the communication between the risk assessor and the risk manager is needed before the initiation of the risk assessment and upon its completion. Generally, the risk assessment itself as a practical tool in the regulatory decision making process would be regarded with social economic impact.ic impact.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2007년도 춘계학술발표대회
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• pp.1140-1141
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• 2007

무선통신의 응용영역 확장으로 공공안전, 특히 교통안전 분야에서 운전자에게 제공되는 안전성과 편의성은 크게 증가한 반면에 정보보호 요구도 변화하고 있다. 본 논문은 교통안전 통신을 정보보호 관점에서 고유 특성을 분석하고, 특히 프라이버시 측면에서 위협요소를 정의하고 있다. 통신을 위한 계층구조에서 위협요소에 대응하는 프라이버시를 확보 방안을 제시하고 있다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 추계학술대회 논문집
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• pp.1977-1987
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• 2008

In this paper, presented was the research work of finding practical application systems using IT that would be adopted by the next generation high speed train for the safety, convenience, and comfort of the passengers and crew members. Study on the applications using smart sensors and IT brought up 26 feasible application cases. Among them 16 cases were related with IT applications and 10 cases smart sensor applications. After having public hearings and surveys to make the decision more objective and generally acceptable, 7 applications - such as information providing service using personal LCD monitor, alarm service, individual internet access service, automatic and remote air conditioning, wireless visual communication with an attendant, extraordinary sound detection, urgent situation in toilet monitoring - out of those 26 were chosen as the final applications.

• Journal of information and communication convergence engineering
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• 제19권3호
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• pp.148-154
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• 2021

With the advent of context-aware computing, many attempts were made to understand emotions. Among these various attempts, Speech Emotion Recognition (SER) is a method of recognizing the speaker's emotions through speech information. The SER is successful in selecting distinctive 'features' and 'classifying' them in an appropriate way. In this paper, the performances of SER using neural network models (e.g., fully connected network (FCN), convolutional neural network (CNN)) with Mel-Frequency Cepstral Coefficients (MFCC) are examined in terms of the accuracy and distribution of emotion recognition. For Ryerson Audio-Visual Database of Emotional Speech and Song (RAVDESS) dataset, by tuning model parameters, a two-dimensional Convolutional Neural Network (2D-CNN) model with MFCC showed the best performance with an average accuracy of 88.54% for 5 emotions, anger, happiness, calm, fear, and sadness, of men and women. In addition, by examining the distribution of emotion recognition accuracies for neural network models, the 2D-CNN with MFCC can expect an overall accuracy of 75% or more.

• International journal of advanced smart convergence
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• 제9권4호
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• pp.115-119
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• 2020

Recently, CCTV installations are rapidly increasing in the public and private sectors to prevent various crimes. In accordance with the increasing number of CCTVs, video-based abnormal behavior detection in control systems is one of the key technologies for safety. This is because it is difficult for the surveillance personnel who control multiple CCTVs to manually monitor all abnormal behaviors in the video. In order to solve this problem, research to recognize abnormal behavior using deep learning is being actively conducted. In this paper, we propose a model for detecting abnormal behavior based on the deep learning model that is currently widely used. Based on the abnormal behavior video data provided by AI Hub, we performed a comparative experiment to detect anomalous behavior through violence learning and fainting in videos using 2D CNN-LSTM, 3D CNN, and I3D models. We hope that the experimental results of this abnormal behavior learning model will be helpful in developing intelligent CCTV.

• 한국산업융합학회 논문집
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• 제27권3호
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• pp.501-508
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• 2024

Organizational citizenship behavior refers to the behavior of faithfully performing one's duties and being faithful to other roles. Firefighters' awareness of organizational citizenship behavior is closely related to national and individual safety and is very important. The smooth communication and cooperative attitude of fire department employees means organic unity at the disaster site. The purpose of this study was to analyze the awareness of organizational citizenship behavior among firefighters. As a result of analyzing the overall level of organizational citizenship behavior of firefighters, the average score was 3.83 points (out of 5). In particular, significant implications emerged regarding work-related appointment times and words and actions between co-workers. In the future, we hope that firefighting policy authorities will make a lot of efforts and academic research by subsequent generations will be conducted to make firefighting more trustworthy to the public.

• 한국전자통신학회논문지
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• 제9권8호
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• pp.875-882
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• 2014

본 논문은 u-방범서비스와 유용성 및 시민만족의 관계에 대한 연구이다. 독립변수로 u-방범서비스요인을, 매개변수로 유용성을, 종속변수로 시민만족으로 구성하였다. SPSS 18.0을 이용하여 요인분석, 신뢰도분석, 다중회귀분석, 경로분석을 실시하였다. 결과는 다음과 같다. 첫째, u-방범 서비스 요인이 유용성에 정적 영향을 미친다. 즉, '공공안전', '시스템품질', '서비스품질' 활동이 잘 이루어질수록 유용성은 높다. 둘째 u-방범 서비스 요인이 시민만족에 정적 영향을 미친다. 즉, '공공안전', '시스템품질', '서비스품질' 활동이 잘 이루어질수록 시민만족은 높다. 셋째, 유용성이 시민만족에 정적 영향을 미친다. 즉, "경제유용성", "안전유용성"이 향상될수록 시민만족은 높다. 넷째, u-방범 서비스는 유용성 및 시민만족에 직간접적인 영향을 미친다. 즉, 유용성은 u-방범 서비스와 시민만족을 매개하는 중요한 변수이다.

• 한국안전학회지
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• 제33권2호
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• pp.124-131
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• 2018

In consideration of limitations of the classic economic approach to risk evaluation and the psychometric analysis of risk perception, this study applies a facilitated modeling technique to a group of college students in Korea. In this group activities, researchers did not provide a pre-selected list of risk items. Instead, 35 participants had group discussions to generate 63 risk items, to rate their risk level and to evaluate their characteristics in terms of the level of knowledge and dreadfulness. This study also analyzes the influence of mass media, online news papers in particular, on risk perception by counting the number of news articles covering key word corresponding risk items generated. The results show that there are significant differences between the rank order of risk items generated by students and that of statistical or objective risk. Psychometric analyses find that the levels of knowledge and dreadfulness have meaningful correlations with risk level. A well known or a dreadful risk demonstrates a high level of risk. Correlation analyses of media coverage and the risk level also re-confirms strong positive relations. The larger number of news articles a risk issue was covered by, the higher level of risk it showed. It means that college students generated risk items on the basis of what they were exposed by media. The role of mass media in risk perception and the importance of risk communication in risk evaluation are underlined. Implications of research findings and future research are discussed as well.

• 한국ITS학회 논문지
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• 제13권4호
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• pp.57-62
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• 2014

최근 들어 DSRC(Dedicated Short Range Communication), WAVE(Wireless Access for Vehicular Environment) 등의 무선 네트워크 기술을 기반으로 고속 이동 중인 차량의 운전자에게 안전 정보를 제공하기 위한 연구개발이 활발히 진행중이다. 본 논문에서는 무선랜 기술을 기반으로 하는 딜레마구간 의사결정 지원 서비스를 위한 로봇카 기반의 개념검증모형시스템의 설계 및 구현에 대하여 소개한다. 제안하는 모델 시스템은 무선랜 인터페이스를 탑재한 임베디드 리눅스기반의 로봇카 및 차량탑재장치 에뮬레이터, 운전자의 동작을 모사하기 위한 안드로이드 기반의 원격조종기, 신호제어기와 신호시스템을 모사하기 위한 노트북 PC, 노변기지국을 모사하기 위한 무선랜 AP(Access Point)로 구성된다.

• 한국컴퓨터정보학회논문지
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• 제27권3호
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• pp.239-249
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• 2022

이 연구는 국내 및 해외의 스쿠버다이빙리조트 활성화 요인을 도출하고 비교 분석하는데 목적이 있다. 국내와 해외 스쿠버다이빙리조트의 경영대표, 교육팀장 등 운영에 관련된 전문가 30명을 대상으로 3차례에 델파이 조사를 진행하였다. 국내와 해외의 활성화 요인을 비교 분석한 결과 공공다이빙 장소의 편의시설 확충, 다이버들을 위한 안전시설 및 의료시설 설치, AED, 산소 등 응급처치 시스템 구축, 다이빙 보트 내 입·출수 리프트, 화장실 등 편의시설 필요, 다이빙 보트 스크루 안전망 설치, 지역 보트 운항 가이드 라인, 스쿠버다이빙 정규 코스 교육 프로그램, 전문 스쿠버다이빙 강사 및 가이드 고용, 다양한 SNS를 이용한 소통 및 홍보, 다이버의 입소문을 통한 홍보, 지역 다이빙 리조트 연합회 활동, 한인 다이빙 연합회 활동, 지역 어촌계와의 소통 및 상생 정책, 지역 관광산업과 연계정책이 공통적인 중요 활성화 요인으로 나타났다.