http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
자궁경부의 상피내종양과 편평세포암종에서 cyclin E, bcl-2, p27, VEGF, p53 및 E-cadherin 발현양상
서재홍,양정원,성정희,오수섭,이미자 조선대학교 부설 의학연구소 2002 The Medical Journal of Chosun University Vol.27 No.2
Background and Objectives: Correlation of cyclin E, bcl-2, p27, VEGF, p53 and E-cadherin expression was analyzed in cervical intraepithelial neoplasia (CIN), carcinoma in situ (CIS), and microinvasive and invasive squamous cell carcinoma (SCC) according to human papilloma virus (HPV) inffection. Materials and Methods : (23 CIN 1, 28 CIN 2, 23 CIN 3), 18 CIS, and 24 SCC. Results: Expression of cyclin E was significantly higher in CIN 2, CIN 3, CIS and SCC than CIN 1 with or without HPV infection. Expression of bcl-2 was significantly higher in CIN 3 than SCC. There was no association between expression of p27 and VEGF and progression of CIN 1 to SCC. Expression of p53 was significantly high in CIN 3, CIS and SCC with or without HPV infection. Expression of the E-cadherin was significantly high in CIN 2, CIN 3, CIS and SCC with or without HPV infection. Conclusion: There was correlation between expression of cyclin E, b치-2, ㅔ53, E-cadherin and progression of CIN to SCC. It is suggested that cyclin E may play an important role in the neoplastic transformation of cervical squamous cell.
A SLIP-based Robot Leg for Decoupled Spring-like Behavior: Design and Evaluation
서재홍,김정영,박상신,조정산 제어·로봇·시스템학회 2019 International Journal of Control, Automation, and Vol.17 No.9
We present a spring loaded inverted pendulum (SLIP) based robot leg to enable decoupled swing motion and spring-like behavior. The two SLIP principles (decoupled swing motion and spring-like behavior) allow an improved understanding of robot locomotion and its control. Proposed leg mechanism include one degree of freedom (DOF) straight-line generating mechanism to perform ideal spring-like behavior and the pantograph to amplify that. The spring-like behavior can be implemented using mechanical constraints with Chebyshev linkage and the virtual spring method. For applying the virtual spring method to the radial motion controlled by one actuator, the relationship between the actuator force and radial force acting on the foot end was determined by using a kinematic interpretation. A 1-DOF test bed including the suggested leg was built and tested to verify the decoupled motions. The spring-like leg behavior was demonstrated during the free fall experiment and the experiment in which external force was applied.
목적지 순차 번호를 사용하지 않은 새로운 구조의 Ad Hoc 네트워크의 라우팅 프로토콜
서재홍,정호열 대한임베디드공학회 2007 대한임베디드공학회논문지 Vol.2 No.3
In Ad Hoc Networks, a connection breaks due to the irregular movement of mobile nodes and the inherent characteristics of the wireless medium such as the interference and the multi-path fading. AODV, a typical on-demand routing protocol in Ad Hoc networks, uses Destination sequence numbering for loop-free. but it may cause RREQ broadcast storm problem This paper proposes AODV_ods that does not need destination sequence number, in routing message and routing table without routing loop. To show the effectiveness of the proposed scheme, we performed extensive simulation with NS-2. The simulation results show that the proposed ADOV_ods efficiently uses wireless bandwidth compare to the original AODV. Finally AODV_ods reduces the routing overhead, end to end delay and increases the overall packet delivery ratio.