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RISS 인기검색어
- 검색키워드
- 저자 : Takuro UCHIDA (검색결과 3 건)
- 무료
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Development of Heterogenous Multi-core Processor ”Hy-DiSC” with Dynamic Reconfigurable Processor
Takuro UCHIDA,Yasuhiro NISHINAGA,Tetsuya ZUYAMA,Kazuya TANIGAWA,Tetsuo HIRONAKA 대한전자공학회 2008 ITC-CSCC :International Technical Conference on Ci Vol.2008 No.7
For accelerating multimedia applications by streaming, we have proposed the heterogeneous multicore processor Hy-DiSC with dynamic reconfigurable processor DS-HIE. The goal of the Hy-DiSC processor is to achieve high performance in a small chip area. In this paper, the performance improvement of the Hy-DiSC processor adopting the DS-HIE processor was evaluated. The application programs that selected for performance evaluation was a JPEG encoding process and the 2-D DCT included in the JPEG encoding process. And, the DS-HIE processor accelerates the 2-D DCT included in the JPEG encoding process. As a result, compared with the MeP processor the DS-HIE processor achieved 28 times higher performance on the execution of 2-D DCT. And, the DS-HIE processor requires fewer transistor counts to implement it.
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Current Level of Reproductive Performances in Japanese Black Cows
Uchida, Hiroshi,Kobayasi, Jin,Inoue, Tatsushi,Suzuki, Keiichi,Oikawa, Takuro Asian Australasian Association of Animal Productio 2002 Animal Bioscience Vol.15 No.8
A set of 313,169 reproduction records of Japanese Black cows calving between 1987 and 1996 were collected in nation widely Japan to investigate the current level of reproductive performances and the factors influencing the performances such as calving interval, first calving age, services per conception, calving difficulty, non-gestation period and gestation length. All the records of reproductive performances are outcome of artificial insemination. The means of first calving age, calving interval, non-gestation period and gestation length were 25.0 months, 389.9, 101.9 and 287.5 days, respectively. Services per conception were 1.41 and degree of calving difficulty was 1.07, which suggests most of the calving, did not need assistance. There were chronological tendencies that first calving age became younger while calving interval became longer. Differences in reproductive performance were found for seasons and calving numbers. Calving interval became shorter towards the fourth calving but became longer afterwards. The cows calving in May had the shortest calving interval followed by those in April and June and first calving age had a similar tendency. The cows with the standard body condition score showed more favourable reproductive performances compare with those with rather fatty or thin body condition scores.
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Yasuhiro NISHINAGA,Takuro UCHIDA,Tetsuya ZUYAMA,Kazuya TANIGAWA,Tetsuo HIRONAKA 대한전자공학회 2008 ITC-CSCC :International Technical Conference on Ci Vol.2008 No.7
We have developed the dynamic reconfigurable processor DS-HIE for the streaming processing in our laboratory. The software development environment for the DS-HIE processor was not developed. So it is difficult to evaluate the performance of the DS-HIE processor by using practical applications. Therefore, this paper explains about the development of the compiler for the DS-HIE processor, which supports high-level programming language. The compiler consists of the Front-end part and the Back-end part. Since it will take time to develop a high quality Front-end from the scratch, so we selected the COINS compiler as the Front-end compiler. The Back-end compiler extracts the parts executed by the DS-HIE processor in the input program, and then maps the operations to the Function Units in the DS-HIE processor. After that, the Back-end compiler routes wires between the Function Units. The applications to evaluate the compiler were one dimensional DCT and row processing of LDCP decoding. As a compilation result, the average usage of the function unit was 83%
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