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김재준,김도연,Kim, Jae-jun,Kim, Do-yeon 한국정보통신학회 2015 한국정보통신학회논문지 Vol.19 No.9
The existing CCTV has limitation such as problem on usage of the off-line type of recorded image for specific investigation, and requirement on interactive operator intervention for real-time surveillance. Therefore, it is required to develop the intelligent CCTV equipped with various functionalities in order to overcome drawbacks mentioned above. In this paper, implementation methods of image-based virtual fence were proposed by using the spline curves with supplied control for setup of surveillance area. In addition, pre-alarm region within the predefined distance was established with tangent and normal lines extracted from control points. The image-based virtual fence can be used for remote detection of intrusion and provision of real-time intrusion alarm, and can be expected to use in safety-related application areas including security and crime prevention. 기존의 CCTV는 녹화된 영상을 사용하는 오프라인 형태의 활용으로 인한 문제점 및 실시간 감시를 위한 운전자의 직접적인 연계의 필요성 등과 같은 제한사항을 가지고 있으며, 이러한 한계점을 극복하고자 다양한 기능을 가지는 지능형 CCTV 개발이 요구되고 있다. 본 논문은 감시영역 설정을 위한 영상기반 가상펜스를 스플라인 곡선을 사용하여 구현하는 방법을 제안한다. 또한, 제어점에서 검출한 접선 및 법선을 이용하여 가상펜스와의 거리를 일정하게 유지하는 사전 경보 영역의 설정 방법을 구현하였다. 구현된 영상기반 가상펜스는 실시간 원격 침입탐지 및 경보 제공의 목적으로 사용 가능하며, 보안 및 범죄예방을 포함하여 안전을 필요로 하는 다양한 분야에서 활용될 것으로 판단된다.
김재준(Jae Jun Kim),고광철(Kwang Cheol Koh),김태호(Tae Ho Kim),송인성(In Sung Song),김정룡(Chung Yong Kim) 대한내과학회 1994 대한내과학회지 Vol.46 No.3
N/A Objectives: The effect of continued supplementation of diet with 10gp sucrose, lactose or glucose solution on rat intestinal disaccharidase specific activity was investigated. Methods: Adult rats were fed a diet with 10% sucrose, lactose or glucose solution supplementation. After 6 weeks, small intestines were removed and disaccharidase specific activities and sucrose mRNA levels were measured. Results: Adult rats when fed a diet with 10% sucrose, lactose or glucose solution supplementation for 6 weeks showed increased intestinal sucrose sperific activity. However, there was no increase of lactase specific activity. Slot blot analysis with radiolabeled rat intestinal sucrase cDNA revealed that mRNA levels of sucrase increased after 10% sucrose, lactose or glucose solution supplementation, and these changes in mRNA levels correlated with the corresponding enzyme specific activity (r=0.36, p<0.05). Conclusion: The results demonstrate that the induction of sucrase activity is directly associated with an increase in sucrase mRNA levels. In conclusion, substrate feeding induces an increase of transcription of rat intestinal sucrase gene.
한국인 태아 및 성인에서 유당분해효소 mRNA 의 발현양상
김재준(Jae Jun Kim),송인성(In Sung Song),김정룡(Chung Yong Kim) 대한내과학회 1997 대한내과학회지 Vol.52 No.5
N/A Objective: The specific activity of lactase-phlorizin hydrolase (LPH) is very high at birth and sharply declines after weaning, producing lactose intolerance. The prevalence of lactose intolerance is up to 85% in Korean adults. Molecular basis of the regulatory mechanisms responsible for the decline of LPH specific activity is still unknown. In order to elucidate the molecular mechanisms regulating the LPH expression during development, LPH specific activity and mI4NA level of Korean fetal and adult intestines were compared. Methods: 20 fetal small intestines (16-27 weeks) were obtained during therapeutic abortion and were divided into 3 equal length. 20 adult jejunal tissues were obtained from patients without small intestinal disease during laparotomy. Mucosal homogenates were prepared for dissacharidases specific activities measurement and total RNA was extracted for northern and slot hvbridization. LPH mRNA level was measured by laser densitometer. Results: LPH specific activities of proximal, middle and distal portion of fetal intestines (n=20) were 36.2±22.5, 38.6±23.2 and 23.2±19.9 mu/mg protein, respectively. LPH specific activity of adult jejunum (n=8) was 5.9±1.8 mu/mg protein and significantly (p<0.05) lower than those of fetal intestines. However, there was no significant difference in sucrase and trehalase specific activities between fetal intestines and adult jejunum. Although LPH specific activity of adult jejunum was lower than those of fetal intestines, LPH mBNA level of adult jejunum was as high as those of fetal intestines. Conclusion: These results show that LPH specific activity and mRNA level do not parallel, indicating the posttranscriptional control of fetal development of LPH expression.
산업용 무선센서네트워크 설계와 음향 세척 장치의 음파 검출을 위한 응용
김아연(A Yeon Kim),한재준(Jae Jun Han),김동식(Dong Sik Kim) 대한전자공학회 2014 전자공학회논문지 Vol.51 No.7
화력발전소와 같은 석유화학 설비, 소각 설비 등에서는 재, 먼지 등의 이물질이 발생하며 이물질을 효과적으로 제거하기 위한 방법으로 음향 세척 장치를 이용하는 방식이 있다. 하지만 이 방법의 경우 이물질로 인하여 혼의 입구가 막혀 오작동할 가능성이 있다는 단점이 있다. 본 연구에서는 음향 세척 장치의 정상 작동을 감시하기 위한 음파 검출 무선 센서를 개발하였으며, 센서의 원리를 설명하였다. 이 음파 검출 무선 센서는 실험을 통하여 고온 혹은 저온의 다양한 산업 환경에서 안정적인 동작을 확인하였다. 또한 음파 검출 무선 센서와 424MHz 대역을 이용한 통신을 하여 데이터를 수신하는 무선 데이터 수집 장치를 개발하여 음파 검출무선 센서의 동작 상태를 외부에서 확인할 수 있도록 하였다. The acoustic cleaning system is widely used to remove foreign materials in factories, such as thermal power plants and incinerators. However, the acoustic cleaning systems tend to be clogged by foreign materials. In this paper, we develop a wireless sensor network for the sound wave detection in order to monitor proper operations in the acoustic cleaning systems. We observe that the developed wireless sensor network for the wave detection shows a stable operation in various industrial environments of wide temperature ranges. We also develop a data gathering device, which displays the current status of the sound generator and several values detected from the wireless sensor.