• Title/Summary/Keyword: BMAP

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Optimization of Buffers Capacity in Tandem Queueing Systems with Batch Markovian Arrivals Process

  • Kim, Che-Soong;Lee, Seok-Jun
    • Journal of Korea Society of Industrial Information Systems
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    • v.12 no.2
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    • pp.16-23
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    • 2007
  • Tandem queueing systems well suit for modeling many telecommunication systems. Recently, very general $BMAP/G/1/N/1{\to}{\bullet}/PH/1/M-1$ type tandem queues were constructively studied. In this paper we illustrate application of the obtained results for optimization of a buffer pool design.

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Performance Analysis of an Collision Resolution Algorithm in HFC-CATV Network (HFC-CATV 망에서의 충돌해결알고리즘에 대한 성능분석)

  • 이수연;안정희
    • The Journal of the Korea Contents Association
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    • v.2 no.3
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    • pp.113-118
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    • 2002
  • To provide interactive sonics in HFC(Hybrid Fiber Coax)-CATV network, there must be supported a MAC(Medium Access Control) protocol. It is wet known that collision can be occurred in the HFC upstream channel because it is shared by up to 500 users. Thus it needs the collision resolution algorithm. Consequently, this paper proposes the analysis mood to study stability of binary stack algorithm for adaptive collision resolution algorithm in HFC-CATV. Also, it compares a system throughput between IPP model and D-BMAP model.

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Generation of Newly Discovered Resistance Gene mcr-1 Knockout in Escherichia coli Using the CRISPR/Cas9 System

  • Sun, Lichang;He, Tao;Zhang, Lili;Pang, Maoda;Zhang, Qiaoyan;Zhou, Yan;Bao, Hongduo;Wang, Ran
    • Journal of Microbiology and Biotechnology
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    • v.27 no.7
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    • pp.1276-1280
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    • 2017
  • The mcr-1 gene is a new "superbug" gene discoverd in China in 2016 that makes bacteria highly resistant to the last-resort class of antibiotics. The mcr-1 gene raised serious concern about its possible global dissemination and spread. Here, we report a potential anti-resistant strategy using the CRISPR/Cas9-mediated approach that can efficiently induce mcr-1 gene knockout in Escherichia coli. Our findings suggested that using the CRISPR/Cas9 system to knock out the resistance gene mcr-1 might be a potential anti-resistant strategy. Bovine myeloid antimicrobial peptide-27 could help deliver plasmid pCas::mcr targeting specific DNA sequences of the mcr-1 gene into microbial populations.