http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
디지털포렌식 관점의 안드로이드 Lock 기능 분석 방안 연구
조재완(Jae-Wan Cho),박태형(Tae-Hyoung Park),이상진(Sang-Jin Lee) 한국디지털포렌식학회 2012 디지털 포렌식 연구 Vol.- No.9
Since the use of smartphone increased, smartphone has become a very important medium that handles or archives digital evidence, which may be directly or indirectly related to a criminal case. However, it may be difficult to collect and process relevant evidence in case of using the lock function provided by the smartphone OS or an application easily downloaded from the App Market, since such function enables anti-forensic techniques that conceal or encrypt certain files or block the execution of an application. Therefore, this study is about examiing methods of collecting and archiving passwords required for using various lock functions in Android OS smartphones. This study is to facilitate the process and collection of digital evidence archived in smartphone and to help decipher an encrypted file or a password needed for a user to control the access to other digital devices.
이동성 위치기반 증강현실(LBMS-AR)시스템 적용 현장체험 학습활동 프레임워크 개발
조재완(Jae Wan Cho),김은경(Eun Gyung Kim) 한국IT서비스학회 2019 한국IT서비스학회지 Vol.18 No.5
In this study, we developed the Field-Experiential Learning Framework Using the Location Based Mobil-learning System (LBMS) and it is mobile Augmented Reality (AR) for smart learning system which is advanced e-learning. AR is technology that seamlessly overlays computer graphics on the real world. LBMS-AR has become widely available because of mobile AR. Mobile AR is possible to get information from real world anytime, anywhere. Nowadays, there are various areas using AR such as entertainment, marketing, location-based AR. We analysed the result of survey and implemented the functions. Also, for survey about application s effectiveness, we have focus group interview (FGI). Then we demonstrated and explained the application to them. The result of survey about application s effectiveness shows that application have higher utilization in education area. One of the most promising areas is education. AR in education shows lifelike images to users for realism. It s a good way for improving concentration and attention. We utilize only a beacone for image-based AR without other sensor.
조재완(Jai-Wan Cho),이재철(Jae-Cheol Lee),최유락(You-Rak Choi) 대한전자공학회 2019 대한전자공학회 학술대회 Vol.2019 No.11
In this paper, the pipe leakage mock-up (orifice nozzle diameter < 0.2mm) according to ASTM E1002-05 (verification criteria of an ultrasonic leak detection unit) was fabricated. Using the pipe leakage mock-up, the intensity of the ultrasonic leakage signal was measured. under the differential pressure (gauge pressure <100 kPa) and a distance of 5m or more. The experimental results are described.