• Title/Summary/Keyword: srRAS

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The scheme to implement Rate Adaptive Shaper for Differentiated Service Network - srRAS and G-srRAS -

  • Park, Chun-Kwan;Kim, Kab-Ki
    • Journal of information and communication convergence engineering
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    • v.1 no.3
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    • pp.123-128
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    • 2003
  • This paper has addressed the implementation of the single rate Rate Adaptive Shaper(srRAS) described in RFC2963. This shaper has been proposed to use at the ingress of differentiated services networks providing Assured Forwarding Per Hop Behavior (AFPHB). srRAS is typically used in conjunction with single rate Three Color Marker(srTCM) described in RFC2697. srRAS itself is the tail-drop FIFO that is drained at a variable rate, and srTCM is the marker with metering function. G-srRAS is the same as srRAS except that RAS receives the green token state information from the downstream srTCM to avoid delaying a packet in RAS although there are sufficient tokens available to color the packet green. In this paper, we have addressed the algorithm and the architecture of srRAS, and the scheme to implement srRAS using VHDL(Very high-speed integrated circuit Hardware Description Language) and its related tools.

Design of single rate Rate Adaptive Shaper Using FPGA (FPGA를 이용한 single rate Rate Adaptive Shaper 설계)

  • Park, Chun-Kwan
    • Journal of Advanced Navigation Technology
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    • v.10 no.1
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    • pp.70-78
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    • 2006
  • This paper has addressed the scheme to design single rate Rate Adaptive Shaper (srRAS) proposed in RFC2963. srRAS is the shaper used in conjugation with downstream single rate Three Color Marker (srTCM) described in RFC269. it is tail-drop First Input First Out (FIFO) queue that is drained at a variable rate. srTCM meters IP packet streams from srRAS and marks its packets to be either green, yellow, or red. This shaper has been proposed to use at the ingress of differentiated services networks providing AF PHB. And then srRAS can reduce the burstiness of the upstream traffic of srTCM. This paper addresses algorithm, architecture of srRAS, and the scheme to implement srRAS using Field-Programmable Gate Arrays (FPGA) and the related technology.

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Effect of Dietary Capsaicin on Proto-oncogenes Expression in Various in Mice (식이 Capsaicin이 마우스의 주요 장기조직에서의 Proto-oncogenes Expression에 미치는 영향)

  • 김정미;한인섭;김병삼;유리나
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.25 no.6
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    • pp.1024-1030
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    • 1996
  • Capsaicin (8-methyl-N-vanillyl-6-nonenamide: CAP) is a mai or ingredient of hot pepper that has been used as a spicy food additive, preservative, and medicine. In this study, we evaluated the effect of dietary CAP on the selected proto-oncogene(c-jun, c-myc, H-ras, erbB, p53) expressions in various tissues of mice. Male ICR mice were divided into four groups and fed the experimental diets containing CAP at the levels of 0, 5, 20 and 100ppm for four weeks. Steady state RNA levels in various tissues were measured by slot blot hybridization assay. C-jun expression level was enhanced in stomach tissue from mice fed 20ppm CAP and significantly reduced from mice fed 100ppm CAP. The c-jun expression levels were differentially altered in organ-specific manner, Tumor suppressor gene p53 expression level appeared to be slightly increased in the liver from mice fed 20ppm CAP. These results suggested that dietary CAP differentially modulates c-jun and p53 expression in various organs.

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