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Architecture and Performance Analysis of QoS Interworking between WLAN and IP Networks (WLAN과 IP 망간의 QoS 연동 구조 및 성능분석)

  • Kim Jong-Sung;Kim Jeong-Rok;Kim Hong-Tae;Jeong Seong-Ho;Baek Seungkwon
    • Proceedings of the Korean Information Science Society Conference
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    • 2005.11a
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    • pp.415-417
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    • 2005
  • 서비스품질(QoS) 보장은 지속적인 망자원을 필요로 하는 멀티미디어 응용을 지원하는데 있어 필수적인 사항이다. 무선 환경에서도 멀티미디어의 응용들이 많이 수용될 것으로 전망됨에 따라 무선 환경에서의 QoS 지원에 대한 중요성이 증가되고 있으나, QoS 지원방안이 개별적인 망단위로 연구되는 경우가 많다. 따라서 , 이종 망들이 혼재하는 환경에서, End-to-End QoS를 보장하기 위한 QoS 연동에 대한 연구가 필요하다. 본 논문에서는 IEEE 802.11 WLAN과 IP 망간의 QoS 연동을 지원하기 위해 상이한 QoS 클래스 및 파라미터들 간의 맵핑 방안을 제시하고 시뮬레이션을 통해 End-to-End QoS가 지원됨을 입증한다.

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Effects of ZnS Insertion on the Characteristics of CaS:Pb Thin Film Phosphor

  • Park, Sang-Hee Ko;Kang, Seung-Youl;Kim, Kwang-Bok;Kim, Dong-Il;Yun, Sun-Jin
    • 한국정보디스플레이학회:학술대회논문집
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    • 2003.07a
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    • pp.1071-1074
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    • 2003
  • The effects of ZnS insertion on the characteristics of CaS:Pb phosphor were investigated. The intensity of photoluminescence of ZnS inserted CaS:Pb excited by 347nm were increased while that excited by 254nm was unchanged, compared to those of CaS:Pb thin film. The electroluminescent display having ZnS inserted CaS:Pb showed lower threshold voltage and higher efficiency than those of CaS:Pb ELD device.

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Ribosomal protein S3 is phosphorylated by Cdk1/cdc2 during G2/M phase

  • Yoon, In-Soo;Chung, Ji-Hyung;Hahm, Soo-Hyun;Park, Min-Ju;Lee, You-Ri;Ko, Sung-Il;Kang, Lin-Woo;Kim, Tae-Sung;Kim, Joon;Han, Ye-Sun
    • BMB Reports
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    • v.44 no.8
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    • pp.529-534
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    • 2011
  • Ribosomal protein S3 (rpS3) is a multifunctional protein involved in translation, DNA repair, and apoptosis. The relationship between rpS3 and cyclin-dependent kinases (Cdks) involved in cell cycle regulation is not yet known. Here, we show that rpS3 is phosphorylated by Cdk1 in G2/M phase. Co-immunoprecipitation and GST pull-down assays revealed that Cdk1 interacted with rpS3. An in vitro kinase assay showed that Cdk1 phosphorylated rpS3 protein. Phosphorylation of rpS3 increased in nocodazole-arrested mitotic cells; however, treatment with Cdk1 inhibitor or Cdk1 siRNA significantly attenuated this phosphorylation event. The phosphorylation of a mutant form of rpS3, T221A, was significantly reduced compared with wild-type rpS3. Decreased phosphorylation and nuclear accumulation of T221A was much more pronounced in G2/M phase. These results suggest that the phosphorylation of rpS3 by Cdk1 occurs at Thr221 during G2/M phase and, moreover, that this event is important for nuclear accumulation of rpS3.

Infantile Littre's Hernia - A Case Report - (영아에서 진단된 Littre's hernia)

  • Cho, Jae-Sueng;Boo, Yoon-Jung;Park, Sung-Soo
    • Advances in pediatric surgery
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    • v.14 no.2
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    • pp.200-204
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    • 2008
  • The term "Littre's hernia" was originally defined by Reinke in 1841 as "the presence of a Meckel's diverticulum in any hernia sac." Littre's hernia is a very rare disease, which accounts for less than 1 % of all Meckel's diverticula. We report a case of Littre's hernia experienced in a 45 day-old infant.

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