• Title/Summary/Keyword: skipping transfer

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A Frame Skipping Transfer Algorithm based on Network Load (네트워크 부하 기반 프레임 생략 전송 알고리즘)

  • 정홍섭;박규석
    • Journal of Korea Multimedia Society
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    • v.6 no.7
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    • pp.1209-1218
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    • 2003
  • To guarantee client buffer stabilization and visual quality, the VOD service that provides real time video titles on requirements of numerous users, needs a mechanism which transfers frames with dropping or skipping algorithm by network condition. In this paper, we show an algorithm that transfers withdrawed skipped MPEG frames(I, P, B frame) from disk to client dependent on network load. Moreover, we verify through a simulation that adaptive dealing on network load can reduce the network load and stabilize client receiving buffer.

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Gene Therapy of Inherited Muscle Diseases (유전성 근육질환의 유전자 치료)

  • Shin, Jin-Hong
    • Annals of Clinical Neurophysiology
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    • v.14 no.2
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    • pp.53-58
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    • 2012
  • For the last decades, molecular genetics has achieved great advances that the genes on the list of inherited muscle diseases are piling up. Those diseases of overlapping clinico-pathologic findings are now understood with discrete molecular pathogeneses. We are facing an exciting era that the long-waited gene therapy may eventually come true. Skipping of dystrophin exon 51 is on successful clinical trials, which will benefit about 13% of the children suffering from Duchenne muscular dystrophy. Exon skipping is under active investigation to expand the candidates. Hopefully it may cover majority of Duchenne muscular dystrophy mutations and some of other diseases. Adeno-associated virus is one of the most versatile tools for gene transfer. It may overcome the limitation of exon skipping. Here we review exon skipping technique of Duchenne muscular dystrophy and briefly discuss the other strategies being studied to cure inherited muscle diseases.

On the Performance Enhancements of VC Merging-capable Scheduler for MPLS Routers by Sequence Skipping Method (Sequence Skipping 방법을 이용한 MPLS 라우터의 VC 통합기능 스케쥴러의 성능 향상에 관한 연구)

  • Baek, Seung-Chan;Park, Do-Yong;Kim, Young-Beom
    • Journal of IKEEE
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    • v.5 no.1 s.8
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    • pp.111-120
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    • 2001
  • VC merging involves distinguishing cells from an identical merged VC label. Various approaches have been proposed to help this identification process. However, most of them incur additional buffering, protocol overhead and/or variable delay. They make the provision of QoS difficult to achieve. So it was proposed a merge capable scheduler to support VC-merging (VCMS). However, in situations where all VCs are to be merged or the incoming traffic load is very low, it could happen that there are not enough non-merging cells to snoop. In this situation the scheduler uses special control cells to fill the empty time slots out. Too many control cells can cause high cell loss ratio and an additional packet transfer delay. To overcome the drawbacks, we propose a Sequence Skipping(SS) method where the sequencers skip the empty queues and insert SS cells. We show SS method is suitable for VC-merging and can reduce the cell loss ratio and the mean packet transfer delay through simulations.

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A Frame Skipping Transfer Policy for Server based on Clients Dynamic Buffer Control Signal (클라이언트의 동적 버퍼 제어 신호에 의한 서버의 프레임 생략 전송 정책)

  • Jeong, Hong-Seup;Park, Kyoo-Seok
    • The KIPS Transactions:PartA
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    • v.10A no.6
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    • pp.677-684
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    • 2003
  • Most policies of VOD services are mainly studied about server system, and make no touch on clients buffer stabilization which is the basis of guaranteeing playback quality and playing without cut off. In this paper, we proposed a skipping frame transfer policy that can sending dynamic buffer control signal to server in accordance with clients buffer state of starvation or overrun, and server transfers a skipped frame to client after receive the control signal. And through a simulation, we show the suggested policy is more efficiency on playback quality by buffer stabilization which is by preventing loss and miss for receiving frame due to grow worse client buffer state.

Fabrication of Hydrocarbon Membrane based DMFC MEAs with Low Temperature Decal Method (탄화수소계 전해질막과 저온 전사법을 이용한 DMFC용 MEA 제조)

  • Krishnan, N. Nambi;Prabhuram, Joghee;Ha, Heung-Yong;Kim, Soo-Kil
    • 한국신재생에너지학회:학술대회논문집
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    • 2009.06a
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    • pp.415-417
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    • 2009
  • A low temperature decal (LTD) transfer method is tried to fabricated hydrocarbon (HC) membrane based MEA. Sandwiched structures of outer ionomer/catalyst/carbon coating/substrate, which had been developed for Nafion membrane, are used for transfer of catalyst to the HC membrane. Performances of the HC MEA before and after 500hr continuous operation are compared and it is found that a severe delamination occurs at the interface between the HC membrane and the catalyst layer, which is the main reason of the low performance and its degradation. The delamination is due probably to the different nature of HC membrane to the Nafion ionomer. A substitutional method, therefore, is suggested to overcome this. In such a way, the outer ionomer process is removed and the low transfer rate of catalyst by skipping the ionomer process is compensated with optimization of other process variables such as transfer time or temperature. The resulting performance is superior to the original LTD method, which can be explained in terms of low resistive components both in ohmic and kinetic.

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Early Detection of Rice Leaf Blast Disease using Deep-Learning Techniques

  • Syed Rehan Shah;Syed Muhammad Waqas Shah;Hadia Bibi;Mirza Murad Baig
    • International Journal of Computer Science & Network Security
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    • v.24 no.4
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    • pp.211-221
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    • 2024
  • Pakistan is a top producer and exporter of high-quality rice, but traditional methods are still being used for detecting rice diseases. This research project developed an automated rice blast disease diagnosis technique based on deep learning, image processing, and transfer learning with pre-trained models such as Inception V3, VGG16, VGG19, and ResNet50. The modified connection skipping ResNet 50 had the highest accuracy of 99.16%, while the other models achieved 98.16%, 98.47%, and 98.56%, respectively. In addition, CNN and an ensemble model K-nearest neighbor were explored for disease prediction, and the study demonstrated superior performance and disease prediction using recommended web-app approaches.

Accelerating GPU-based Volume Ray-casting Using Brick Vertex (브릭 정점을 이용한 GPU 기반 볼륨 광선투사법 가속화)

  • Chae, Su-Pyeong;Shin, Byeong-Seok
    • Journal of the Korea Computer Graphics Society
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    • v.17 no.3
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    • pp.1-7
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    • 2011
  • Recently, various researches have been proposed to accelerate GPU-based volume ray-casting. However, those researches may cause several problems such as bottleneck of data transmission between CPU and GPU, requirement of additional video memory for hierarchical structure and increase of processing time whenever opacity transfer function changes. In this paper, we propose an efficient GPU-based empty space skipping technique to solve these problems. We store maximum density in a brick of volume dataset on a vertex element. Then we delete vertices regarded as transparent one by opacity transfer function in geometry shader. Remaining vertices are used to generate bounding boxes of non-transparent area that helps the ray to traverse efficiently. Although these vertices are independent on viewing condition they need to be reproduced when opacity transfer function changes. Our technique provides fast generation of opaque vertices for interactive processing since the generation stage of the opaque vertices is running in GPU pipeline. The rendering results of our algorithm are identical to the that of general GPU ray-casting, but the performance can be up to more than 10 times faster.

Block-wise Skipping for Embedded Database System (임베디드 데이터베이스 시스템을 위한 블록 단위 스키핑 기법)

  • Chong, Jae-Hyok;Park, Hyoung-Min;Hong, Seok-Jin;Shim, Kyu-Seok
    • The KIPS Transactions:PartD
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    • v.16D no.6
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    • pp.835-844
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    • 2009
  • Today, most of all the query processors in the world generally use the 'Pipelining' method to acquire fast response time (first record latency) and less memory usage. Each of the operator nodes in the Query Execution Plan (QEP) provides Open(), Next(), and Close() functions for their interface to facilitate the iterator mechanism. However, the embedded database systems for the mobile devices, based on the FLASH memory, usually require a function like Previous(), which returns the previous records from current position. It is because that, in the embedded environment, the mobile devices cannot fully provide it main memory to store all the query results. So, whenever needed the previously read records the user (program) should re-fetch the previous records using the Previous() function: the BACKWARD data fetch. In this paper, I introduce the 'Direction Switching Problem' caused by the Previous() function and suggest 'Block-wise Skipping' method to fully utilize the benefits of the block-based data transfer mechanism, which is widely accepted by most of the today's relational database management systems.

A Frame Dropping Transfer Algorithm for Effective VOD Service (효율적VOD 서비스를 위한 프레임 생략 전송 알고리즘)

  • 남성진;정홍섭;박규석
    • Proceedings of the Korea Multimedia Society Conference
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    • 2003.05b
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    • pp.90-95
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    • 2003
  • 다수의 사용자 요구에 의한 비디오 타이틀을 실시간으로 제공해야 하는 VOD 서비스는 클라이언트의 버퍼 안정화와 재생 질 보증을 위해서는 네트워크의 상태를 주기적으로 모니터링하여 그 상태에 따라 디스크 배열에 저장되어 있는 프레임을 드로핑(Dropping)이나 스키핑(Skipping) 알고리즘으로 프레임을 전송하는 메카니즘이 필요하다. 본 논문에서는 MPEG을 이용하여 일반 VHS 비디오 테이프의 내용을 손실 압축하여 디스크 배열에 저장해 두고, 디스크 배열에 압축 저장된 MPEG 프레임(I, P, B 프레임) 데이터를 네트워크의 부하에 따라 저장장치에서 생략 인출하여 클라이언트에 전송하는 알고리즘을 제시한다. 또한 시뮬레이션을 통해 네트워크의 부하에 적응적으로 대처하여 네트워크의 부하를 줄이고 클라이언트의 수신 버퍼를 안정화시킬 수 있음을 검증한다.

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Late avulsion of a free flap in a patient with severe psychiatric illness: Establishing a successful salvage strategy

  • Schaffer, Clara;Hart, Andrew;Watfa, William;Raffoul, Wassim;Summa, Pietro Giovanni di
    • Archives of Plastic Surgery
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    • v.46 no.6
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    • pp.589-593
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    • 2019
  • Post-traumatic defects of the distal third of the leg often require skipping a few steps of the well-established reconstructive ladder, due to the limited local reliable reconstructive options. In rare cases, the reconstructive plan and flap choice may encounter challenges when the patient has psychiatric illness affecting compliance with postoperative care. We describe a case of a patient with severe intellectual disability and an open fracture of the distal lower limb. After fracture management and debridement of devitalized tissues, the resultant soft tissue defect was covered with a free gracilis flap. On postoperative day 7, the patient ripped out the newly transplanted flap. The flap was too traumatized for salvage, so a contralateral free gracilis muscle flap was used. The patient showed good aesthetic and functional outcomes at a 1-year follow-up. When planning the postoperative management of patients with psychiatric illness, less complex and more robust procedures may be preferred over a long and complex surgical reconstruction requiring good compliance with postoperative care. The medical team should be aware of the risk of postoperative collapse, focus on the prevention of pain, and be wary of drug interactions. Whenever necessary, free tissue transfer should be performed despite potential compliance issues.