코로나시대 비대면 설계

황동욱,최정훈 한국도로학회 2021 한국도로학회지 Vol.23 No.2

API 호출 기반 악성행위 자동탐지에 관한 연구

황동욱,강홍구,이태진 한국통신학회 2016 한국통신학회 학술대회논문집 Vol.2016 No.1

얼굴 표정 시각자극에 따른 사상 체질별 유발뇌파 예비연구

황동욱,김근호,이유정,이재철,김명근,김종열,Hwang, Dong-Uk,Kim, Keun-Ho,Lee, Yu-Jung,Lee, Jae-Chul,Kim, Myoyung-Geun,Kim, Jong-Yeol 사상체질의학회 2010 사상체질의학회지 Vol.22 No.1

1. Objective There has been a few trials to diagnose Sasang Constitution by using EEG, but has not been studied intensively. For the purpose of practical diagnosis, the characteristics of EEG for each constitution should be studied first. Recently it has been shown that Sasang Constitution might be related to harm avoidance and novelty seeking in temperament and character profiles. Based on this finding, we propose a visual stimulation method to evoke a EEG response which may discriminate difference between constitutional groups. Through the experiment with this method, we tried to reveal the characteristics of EEG of each constitutional groups by the method of event-related potentials. 2. Methods: We used facial visual stimulation to verify the characteristics of EEG for each constitutional groups. To reveal characteristic in sensitivity and latency of response, we added several levels of noise to facial images. 6 male subjects(2 Taeeumin, 2 Soyangin, 2 Soeumin) participated in this study. All subjects are healthy 20's. To remove artifacts and slow modulation, we removed EOG contaminated data and renormalization is applied. To extract stimulation related components, normalized event-related potential method was used. 3. Results: From Oz channels, it is verified that facial image processing components are extracted. For lower level noise, components related to the visual stimulation were clearly shown in Oz, Pz, and Cz channels. Pz and Cz channels show differences among 3 constitutional groups in maximum around 200 msec. Especially moderate level of noise looks appropriate for diagnosis. 4. Conclusion: We verified that the visual stimulation with facial emotion might be a good candidate to evoke the differences between constitutional groups in EEG response. The differences shown in the experiment may imply that the process of emotion has distinct tendencies in latencies and sensitivity for each consitutional group. And this distinction might be related to the temperament profile of consitutional groups.

취약한 정보유출차단시스템을 이용한 내부정보 유출기법과 대응방안에 관한 연구

황동욱,송송태,강종수 한국산업보안연구학회 2016 한국산업보안연구 Vol.6 No.1

2008년부터 활성화된 DLP(Data Loss Prevention) 시장을 바탕으로 최근 대 부분의 기업들은 내부 정보유출 방지를 위한 PC보안, 문서보안(DRM) 등의 시스 템을 도입⋅운용하고 있다. 또한 전자적 유출 이외에 프린트 통한 유출을 방지 하기 위한 출력물보안시스템, 복합기인증시스템 등 정보화기기에 대한 통제 시 스템도 운용하고 있다. 기업들은 이와 같은 시스템을 통해 정보유출을 통제하고 있으며 담당자는 해당 시스템에 의존하여 정보유출을 감시하고 통제하고 있다. 그러나 이러한 시스템들이 오히려 관리자의 감시를 피해 정보를 유출할 수 있는 중계지와 연계구간이 될 수 있다는 관점에서 본 연구를 수행하게 되었으며, 현 시장에서 운영 중인 시스템들을 대상으로 정보유출의 원인이 될 수 있는 취약점 에 대한 연구와 해당 취약점을 통해 실제 정보유출이 가능한지에 대한 검증을 수행하고자 한다. 이를 통해 발견된 취약점을 보완할 수 있도록 DLP 시스템이 갖춰야할 기본적 보안기능에 대해 알아보고 이에 따른 기술적, 관리적, 제도적 대응방안에 대하여 제언하고자 한다. Use a vulnerability of DLP(Data Loss Prevention) systems. We can leaked internals information held by Data Less Prevention System. In this paper, we learn about the vulnerability of DLP systems. And, we can find the solution about that. Technical aspects, Management methods aspects and Policy aspects.

해안 유사에서 수체로의 플라스틱 입자 방출에 관한 실험적 연구

황동욱,박용성 한국수자원학회 2023 한국수자원학회논문집 Vol.56 No.2

In marine environments, plastics have become more abundant due to increasing plastic use. Especially, in coastal regions, particles may remain for a long time, and they interact with flows, wind, sand and human activities. This study aimed thus to observe how plastic debris interacts with and escape from sediments. A series of experiments were conducted in order to gain a better understanding of particle release from coastal sediments into water body. An oscillating water tunnel was built for the experiments, and used to generate oscillatory flows of relatively high Reynolds number and induce sediment transport. Spherical plastic particles of three different sizes was used in lieu of plastic debris in environments. It was observed that release of the particles was directly related to change of bedform, which is in turn determined by the flow condition. Also smaller particles tend to escape the sediment more readily. Critical values for dimensionless parameters are proposed. 지속적으로 증가하는 플라스틱의 사용으로 인하여 현재 해안·해양 환경에서 플라스틱을 찾기란 어렵지 않은 일이 되었다. 하천을 통해 해양으로 유출된 플라스틱 폐기물은 해안 지역에서 장기간 머물며, 파랑, 바람, 유사, 인간 활동 등과 같은 다양한 요인들과 상호작용하며 물리적·화학적 변화를 겪게 된다. 이에, 실험적 연구를 통하여 해안 유사에서 수체로의 플라스틱 입자 방출 과정을 고찰하고자 하였다. 본 연구는 고 레이놀즈 수를 가지는 왕복 흐름과 유사 이동을 구현하기 위한 왕복흐름발생장치를 제작하여 진행되었고, 세 가지의 크기를 가지는 매끈한 구형의 플라스틱 입자를 사용하였다. 실험 결과, 유사 내 플라스틱 입자의 방출은 유사 이동에 가장 큰 영향을 받았으며, 이는 흐름의 세기에 비례한다. 더불어, 입자가 작을수록 더 많은 입자가 방출되었다. 결과를 종합하여 입자의 방출을 결정하는 무차원 매개변수들의 임계값을 제시하였다.

의료산업분야 보안기술 적용실태와 진료정보 유출에 대한 대응방안 연구

황동욱,황지상,김강섭,이병수,이건주,홍용진,최봉철 한국IT서비스학회 2014 한국IT서비스학회지 Vol.13 No.S

Currently, in the field of medical industry, which provides useful services IT Various techniques have been fused. There are cases, such as operating a U-health care services for low-income elderly and living alone, were constructed environment of substantially u-health care-based, the Ministry of Information and Communication and the 2006 SK Telecom, the recent domestic it was also revealed in the famous university hospital, and provides for the first time in the country U-health care services do not have the constraints of time and space. Patients now, by using the PC and mobile phone of their own results, such as blood tests and X-ray, information of the drug prescription information and medical history, were prescribed their own, without having to visit the hospital directly also, We was able to exchange and management of the doctor-related information. However, if the sensitive information disease name of one patient, such as body singularity leaked place of medicine and documentaries medical records of these patients, that is very dangerous. such as inspection records and other risk of information leakage of sensitive information to study the possibility of secondary damage occurs like this it is intended to study how that can be.

자율주행 차량과의 커뮤니케이션을 위한 인터페이스 디자인

황동욱 대한산업공학회 2023 ie 매거진 Vol.30 No.2

고령 농업인의 위험요인 노출, 건강 문제, 직업 만족도 특성 분석

황동욱,정이훈 한국안전학회 2023 한국안전학회지 Vol.38 No.2

This study identified hazard exposures, health problems, and job satisfaction among elderly agricultural workers. A total of 1,340 agricultural workers (1,079 males and 261 females) were extracted from the 6th Korean Working Conditions Survey data. Three age groups (A: 40s or below, B: 50s, and C: 60s or above) were statistically compared in hazard exposures, health problems, and job satisfaction. Elderly agricultural workers (60s or above) had significantly more exposure to ergonomic hazards, severe health problems, and lower job satisfaction than young agricultural workers. The study findings may help understand the characteristics of hazard exposures, health problems, and job satisfaction of elderly agricultural workers and will be useful for improving these conditions.

저가 수중 무인 이동체 개발 및 운동성능 검증

황동욱,장민규,김진현 한국로봇학회 2018 로봇학회 논문지 Vol.13 No.2

In this paper, a high performance underwater vehicle which can be manufactured at low cost is designed and fabricated, and its performance is verified through experiments. To improve efficiency, the Myring equation is used to design the appearance and the duct structure including the thruster is planned to increase the propulsion efficiency while reducing the drag force. Through various methods, it is secured stable waterproof performance, and also is devised to have high speed movement and turning performance. The developed underwater vehicle is equipped with a high output BLDC motor to achieve a linear speed of up to 2 m/s and can change direction rapidly with stability through four rudders. The rudders are driven by coupling a timing belt and a pulley by extending the axis of a servo motor, and are equipped at the end of the body to turn heading. In addition, for stable posture control, the roll keeps its internal center of gravity low and maintains its stability due to restoring force. By controlling the four rudders, pitch and yaw are handled by the PID controller and show stable performance. To investigate the horizontal turning performance, it is confirmed that the yaw rate controller is designed and stable yaw rate control is performed.

코로나시대 비대면 설계

황동욱,최정훈,이수현 한국도로학회 2021 한국도로학회 학술대회 발표논문 초록집 Vol.2021 No.10