• Title/Summary/Keyword: Read

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Dicon Report

  • Im, Yeong-Mo
    • Digital Contents
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    • no.8 s.159
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    • pp.66-71
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    • 2006
  • 예전에 모뎀을 통한 PC통신이 한창 유행할 때, ROM족이라는 유행어가 있었다. RAM(Random Access Memory)과 함께 컴퓨터의 기억장치로 활용되는, 읽기만 가능한 저장매체(Read Only Memory)를 뜻하는 용어였다. 그런데 이 용어는 이 속성을 빗대어 게시판을 읽기만 하는 회원(Read Only Member)을 가리키는 말로도 쓰였다. 정보화시대에 있어서 정보라는 것, 비록 형태가 없는 것들이 대부분이지만 이 역시 누군가가 사용하기 위해서는 누군가가 만들어내야 한다. 수요와 공급이 일어나는 정보 유통 구조다. 혹자는 ROM족으로 소비생활에만 치중하지만, 또 다른 혹자들은 소비와 생산을 동시에 하는 프로슈머(ProSumer) 역할을 한다. 이번호에서는 이러한 생산성을 띤 소비자들에 대한 이야기를 하고자 한다.

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High Speed Parallel Fault Detection Design for SRAM on Display Panel

  • Jeong, Kyu-Ho;You, Jae-Hee
    • 한국정보디스플레이학회:학술대회논문집
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    • 2007.08a
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    • pp.806-809
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    • 2007
  • SRAM cell array and peripheral circuits on display panel are designed using LTPS process. To overcome low yield of SOP, high speed parallel fault detection circuitry for memory cells is designed at local I/O lines with minimal overhead for efficient memory cell redundancy replacement. Normal read/write and parallel test read/write are simulated and verified.

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Effect of soft underlayer on read/write in double layered perpendicular recording media (이중층 수직기록 매체에서 read/write 특성에 미치는 soft underlayer의 효과)

  • 이성철;탁영욱;이택동;이경진
    • Proceedings of the Korean Magnestics Society Conference
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    • 2002.12a
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    • pp.180-181
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    • 2002
  • 수직기록매체에서 기록 밀도가 증가하기 위해서는 bit의 크기를 줄여야 하고, 이를 위해서는 writing head의 width와 thickness를 줄여야 한다. 그러나 head의 크기가 줄어들면 기록층의 자화를 반전시키기에 충분한 write field를 얻지 못한다. 이를 극복하기 위해 head의 tip부분을 trimming을 하여 작은 pole tip 크기를 가지면서도 큰 write field를 얻고, 여분의 magnetic field를 얻기 위해 soft underlayer를 도입하는 이중층 수직기록 매체가 제안되고 있다. (중략)

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Stream based DNA Read Deduplication Method (스트림 기반 DNA 리드 중복제거 방법)

  • Lee, Hyeon-byeong;Song, Seok-il;Yoo, Jaesoo
    • Proceedings of the Korea Contents Association Conference
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    • 2019.05a
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    • pp.9-10
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    • 2019
  • NGS 분석과정 중 증폭된 DNA 리드(Read)는 중복이 발생하여 이로 인해 다음 단계의 정확도 저하 등의 문제를 야기한다. 이 논문에서는 기존 DNA 리드 중복 제거 도구 중 하나인 Samblaster의 중복제거 알고리즘을 이용하여 분산 병렬 형태로 중복제거를 수행하는 방법을 제안한다. 제안하는 중복제거 방법은 중복제거 전단계인 정렬단계애서 정렬된 리드에 대해 중복제거 키를 생성하고 이를 스트림으로 전달하여 중복제거를 수행한다.

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Highly Efficient and Low Power FIR Filter Chip for PRML Read Channel (PRML Read Channel용 고효율, 저전력 FIR 필터 칩)

  • Jin Yong, Kang;Byung Gak, Jo;Myung Hoon, Sunwoo
    • Journal of the Institute of Electronics Engineers of Korea SD
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    • v.41 no.9
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    • pp.115-124
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    • 2004
  • This paper proposes a high efficient and low power FIR filter chip for partial-response maximum likelihood (PRML) disk drive read channels; it is a 6-bit, 8-tap digital FIR filter. The proposed filter employs a parallel processing architecture and consists of 4 pipeline stages. It uses the modified Booth algorithm for multiplication and compressor logic for addition. CMOS pass-transistor logic is used for low power consumption and single-rail logic is used to reduce the chip area. The proposed filter is actually implemented and the chip dissipates 120mV at 100MHz, uses a 3.3V power supply and occupies 1.88 ${\times}$ 1.38 $\textrm{mm}^2$. The implemented filter requires approximately 11.7% less power compared with the existing architectures that use the similar technology.

Performance Evaluation on Journaling File Systems using Iozone Tool in the Linux : Focus on read, write (리눅스에서 Iozone 도구를 이용한 저널링 파일 시스템 성능 평가 : read, write 중심으로)

  • Park, Hong-Jin
    • Journal of Advanced Navigation Technology
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    • v.17 no.1
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    • pp.39-46
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    • 2013
  • If a file system is damaged because of the unusual system close, the system performs the consistency test using fsch and it takes long time. Especially, if it is a big file system, it will take a lot of time. The journaling file system that uses journaling technique, can reduce the restoring time because it uses meta data and it may increase the chance of restoration when restoring. The goal of this paper compared performance evaluation journaling file systems focused on the reading and writing using Iozone tool which is the kernel based benchmarking tool in linux operating system. In this paper, Ex4 which is the current basic Linux file system. is 1.28x faster than XFS file system in terms of file read performance and 1.22x faster than Ext3 file system in terms of file write performance.

Improving Prefetching Effects by Exploiting Reference Patterns (참조패턴을 이용한 선반입의 개선)

  • Lee, Hyo-Jeong;Doh, In-Hwan;Noh, Sam-H.
    • Journal of KIISE:Computing Practices and Letters
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    • v.14 no.2
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    • pp.226-230
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    • 2008
  • Prefetching is one of widely used techniques to improve performance of I/O. But it has been reported that prefetching can bring adverse result on some reference pattern. This paper proposes a prefet-ching frame that can be adopted on existing prefetching techniques simply. The frame called IPRP (Improving Prefetching Effects by Exploiting Reference Patterns) and detects reference patterns online and control pre-fetching upon the characteristics of the detected pattern. In our experiment, we adopted IPRP on Linux read-ahead prefetching. IPRP could prevent adverse result clearly when Linux read-ahead prefetching increases total execution time about $40%{\sim}70%$. When Linux read-ahead prefetching could bring some benefit, IPRP with read- ahead performed similar or slightly better benefit on execution time. With this result we could see our IPRP can complement and improve legacy prefetching techniques efficiently.

The Reading Promotion Campaigns for Children of Public Libraries in Other Countries (공공도서관의 어린이 독서진흥활동 - 다른 나라 사례를 중심으로 -)

  • Yoon, Cheong-Ok
    • Journal of Korean Library and Information Science Society
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    • v.38 no.2
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    • pp.165-184
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    • 2007
  • The purpose of this study is to examine the characteristics of several reading promotion campaigns for children carried out by public libraries in other countries. "Listen Out! - The Stuttgart Reading Project" in Germany, "Chatterbooks" in the U.K., "Born to Read, Read to Bond" in Singapore and "Grandparents and Books(GAB)" in the U.S.A. are examined. While the first three campaigns started in the 2000s, GAB has been carried out by Los Angeles Public Library since 1989. The characteristics of these campaigns are as follow: First, reading books with adults is emphasized. Second, it is important to get some support and sponsor from organigations and individuals in the community. Third, various media, program and activities related to books are used to promote interests in reading. Fourth, discussion and reading are equally emphasized. Fifth, the geographical boundaries of reading campaigns can be extended in the global community.

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