• Title/Summary/Keyword: Robin

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COMPUTATIONAL METHOD FOR SINGULARLY PERTURBED PARABOLIC REACTION-DIFFUSION EQUATIONS WITH ROBIN BOUNDARY CONDITIONS

  • GELU, FASIKA WONDIMU;DURESSA, GEMECHIS FILE
    • Journal of applied mathematics & informatics
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    • 제40권1_2호
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    • pp.25-45
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    • 2022
  • In this study, the non-standard finite difference method for the numerical solution of singularly perturbed parabolic reaction-diffusion subject to Robin boundary conditions has presented. To discretize temporal and spatial variables, we use the implicit Euler and non-standard finite difference method on a uniform mesh, respectively. We proved that the proposed scheme shows uniform convergence in time with first-order and in space with second-order irrespective of the perturbation parameter. We compute three numerical examples to confirm the theoretical findings.

차음성능에 관한 국제간 round robin test (International round robin. test on sound insulation performance)

  • Kang, Hyun-Ju;Kim, Jae-Seung;Kim, Hyun-Sil;Kim, Bong-Kee;Kim, Sang-Ryul
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2001년도 춘계학술대회논문집
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    • pp.1174-1179
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    • 2001
  • 차음성능 측정에 관한 국제간 신인도 향상을 위하여 home and away 테스트가 수행되었다. 동일 시편에 대한 비교 테스트 결과 대부분의 시편에서는 STC 1 ㏈ 이내의 차이를 보였다. 다만, 특정 시편의 경우 STC 5 ㏈의 차이가 발생하였다. 주원인으로는 잔향시간 측정 오차가 주원인으로 추정되며, 또한 부수적인 원인으로는 시편의 제작 및 설치의 차이 때문인 으로 사료된다.

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WRR 알고리즘 지원 시스톨릭 구조 가상 출력 큐 (Systolic Architecture Vitrual Output Queue with Weighted Round Robin Algorithm)

  • 조용권;이문기;이정희;이범철
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2002년도 하계종합학술대회 논문집(1)
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    • pp.347-350
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    • 2002
  • In the input buffer switch system, VOQ(Virtual Output Queue) archives 100% throughput. The VOQ with the systolic architecture maintains an uniform performance regardless of a number of Packet class and output port, so that it doesn't have a limitation of scalability. In spite of these advantages, the systolic architecture VOQ is difficult to change sorting order In this paper, we Proposed a systolic architecture VOQ which support weighted round robin(WRR) algorithm to provide with flow control service.

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Petri-net을 이용한 전송 부하 분산 알고리즘에 관한 실험적 비교 연구 (A Study on Experimental Comparison of Load Balancing Algorithms using Petri-net)

  • 이태경;김재민
    • 한국정보처리학회:학술대회논문집
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    • 한국정보처리학회 2011년도 추계학술발표대회
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    • pp.227-230
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    • 2011
  • 본 논문에서는 유한한 자원인 네트워크를 보다 많은 이용자가 원활하게 사용하기 위해 고안된 전송 부하 분산 알고리즘인 Round Robin, Weighted Round Robin과 전송 부하 분산 알고리즘이 존재 하지 않는 네트워크를 Petri-net 이론을 기반으로 한 시뮬레이터(CPN-Tools)를 통해 실험 결과를 비교 분석하여 알고리즘의 필요성과 전송 부하 분산 알고리즘의 특징과 장단점을 실험을 통하여 보였다.

상기도 폐쇄를 보이는 Pierre Robin Sequence 환아의 순차적 치료: 증례보고 (Sequential Management of Pierre Robin Sequence: Case Report)

  • 김배경;권용대;유선열;최용하;오주영;서준호;고수진
    • Maxillofacial Plastic and Reconstructive Surgery
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    • 제33권3호
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    • pp.270-275
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    • 2011
  • Pierre Robin Sequence (PRS) is known as an anomaly consisting of respiratory obstruction with glossoptosis, micrognathia and cleft palate in a newborn. The etiology of PRS is not known, but several factors may be involved simultaneously. Mortality rate of PRS is about 5~30% and the treatment method is divided into both conventional treatments and surgical interventions. If the respiratory obstruction is not resolved by the conventional method, surgical treatment, such as subperiosteal release of the floor of the mouth, tongue-lip adhesion, tracheostomy, distraction osteogenesis may be needed. This study reports a case of PRS in a newborn male at 20 days, with dyspnea and feeding difficulties. Clinical examination showed micrognathia with glossoptosis and cleft palate as the typical PRS triad. We tried surgical intervention with subperiosteal release of the floor of the mouth and tongue-lip adhesion and surgery was successful. At $19^{th}$ months, we also repaired the incomplete cleft palate successfully using 2-Flap palatoplasty.