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무선 ATM망에서의 트래픽 스케줄링의 페트리 넷 모델링
장경수 경인여자대학 2002 경인논집 Vol.- No.9
The demand of users for the multimedia traffic is increasing in the wired and wireless networks. In this paper, we present petri nets model of scheduling algorithm which is guaranteeing the Quality of Service for each kind of traffic class in the wireless ATM network. The petri nets model need not consider either large state space dimension nor complex computation. Petri nets model is graphical and mathematical model. Presenting the petri net model of scheduling algorithm for wireless ATM is easily extendable and provides an approximate analysis method.
Newcastle Disease Virus의 Fusion 단백 유전자의 제한효소분절형태(RELP)의 특이성
장경수,김지영,김석,김태용,송영환,허지연,김현수,송희종,전무형 충남대학교 수의과대학 동물의과학연구소 2001 動物醫科學硏究誌 Vol.9 No.-
To evaluate the specificity of restriction fragment length polymorphism (RFLP) of Newcastle disease virus (NDV) fusion (F) protein gene for various NDV strains. F protein genes of NDV CBP-1 isolate, LaSota, B1 and Kyojungwon (KJW) were amplified by reverse transcriptase-polymerase chain reaction (RT-PCR) and RFLP were examined. In RT-PCR using F primer sets for 1.7 kb F gene, the amplified products were observed in CBP-1, LaSota and B1 except KJW. However, F2 primer set for 521 bp yielded the amplified bands with all strains. The amplified F genes (1.7 kbp) were treatd with 15 different restriction enzymes to analyze RFLP and the cleavage patterns. CBP-1 showed various cleavage patterns with 8 enzymes, LaSota, with 11 enzymes and B1, with 11 enzymes. According to the cleavage patterns, the physical maps were constructed, and it was found that CBP-1, LaSota and B1 strains had specific cleavage sites with HinfI, XbaI and XhoI. These findings suggest that RFLP are worth applying in the diagnosis and molecular epidemiological studies of Newcastle disease.