• Proceedings of the Botanical Society of Korea Conference
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• 1987.07a
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• pp.283-307
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• 1987

Glycinin and $\beta$-conglycinin are the most abundant storage protein in soybean. These proteins are known to be synthesized predominantly during germination and cell expansion phase of seed development for short period, and synthesized not in other tissues. Genes encoding these storage proteins are useful system to study the mechanism of development stage and tissue specific gene expression in eukaryotes, especially plants, at the molecular level. The cDNA and genomic clones coding for glycinin have been isolated and regulation mechanism of the gene expression has been studied. Initially, development and tissue-specific expression of the glycinin gene is regulated at the level of transcription. Post-transcriptional processing is also responsible for delayed accumulation of the mRNA. Translational control of the storage protein gene has not been reported. Post-translational modification is another strategic point to regulate the expression of the gene. It is possible to identify positive and/or negative reguratory clements in vivo by producing transgenic plants agter gene manipulation. Elucidation of activation and repression mechanism of soybean storage protein genes will contribute to the understanding of the other plant and eukaryotic genes at molecular level.

• Journal of the Korean Institute of Telematics and Electronics
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• v.24 no.5
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• pp.849-855
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• 1987

This paper describes an implementation of the absolute moment block truncation coding(AMBTC) in real time for the moving picture data compression. We have realized a system composed of the encoder and decoder, and operated it using an NTSC TV signal. The encoder consists of a 4-1line buffer memory and a data processing block. Besides, there are signal conditioner and a control signal generator. Experimental results show that the quality of the processed image with a data rate of 10Mb/s is slightly degraded, but not objectionable, comparing data rate of 80Mb/s.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.25 no.3B
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• pp.584-591
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• 2000

In distributed arithmetic-based architecture for an inner product between two length-N vectors, the size of the ROM increases exponentially with N. Moreover, the ROMs are generally the bottleneck of speed, especially when their size is large. In this paper, a ROM size reduction technique for DA( distributed arithmetic ) is proposed. The proposed method is based on modified OBC( offset binary coding) and control circuit reduction technique. by simulations, it is shown that the use of the proposed technique can result in reduction in the number of gates up to 50%.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2003.11a
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• pp.11-15
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• 2003

비디오 부호화기에서는 채널의 용량과 같은 주어진 제약 조건을 만족하면서 좋은 화질을 얻기 위해 비디오 부호화 시 적절한 양자화 변수를 결정해야 한다. 본 논문에서는 H.264 비디오 부호화 표준에서 높은 압축 효율을 철기 위해 비트 율 왜곡 모델에 기반 한 새로운 비트 율 제어 알고리즘을 제안한다. 특히. 부호화된 매크로블록의 특성과 이전에 부호화 된 매크로 발생 비트수를 고려하여. 제안한 비트 율 모델을 통해 양자화 변수 값을 결정한다. 본 논문에서 제안한 알고리즘은 목표 비트수에 가깝고. 기존치 방법보다 개선된 화질을 제공한다.

• 한국정보통신설비학회:학술대회논문집
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• 2008.08a
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• pp.107-111
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• 2008

3GPP는 사용자의 다운링크 패킷 데이터 Throughput을 높이고,NodeB에 MAC계층을 위치시켜, 사용자의 스케줄링과 재전송을 담당하게 함으로써, 다운링크 패킷의 전송 지연을 감소시키는 HSDPA(High Speed Data Packet Access)기술을 Release 5에서 도입하였다. NodeB에 위치한 MAC-hs 스케줄러는 각각의 사용자에게 가용한 NodeB의 RF power와 code 자원을 제공하며, R99에서 사용했던 Power control을 이용하는 대신, AMC(Adaptive Modulation and Coding)기능을 제공하여 Radio conditions에 따라 전송되는 Data Format을 조정하여 채널환경이 좋은 사용자에게는 높은 data Throughput을 제공하며, 채널환경이 좋지 않은 사용자에게는 낮은 data throughput을 제공하고 있다. 본 고에서는 매 TTI에 스케줄링된 사용자에게 제공하고도, RF power 및 code 자원이 남아 있을 경우, 스케줄러는 남은 자원을 각각의 사용자에게 재 분배하여, 초기에 추정한 HSDPA Throughput보다 향상된 성능을 갖을 수 있음을 설명하였다.

• Proceedings of the KAIS Fall Conference
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• 2003.11a
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• pp.80-83
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• 2003

A Genetic algorithm is a searching algorithm that based on the law of the survival of the fittest. Multi-population Genetic Algorithms are a modified form of genetic algorithm. Therefore, experience with fuzzy logic and genetic algorithm has proven to be that a combination of them can efficiently make up for their own deficiency. The Multi-population Genetic Algorithms independently evolve subpopulations. In this paper, we suggest a new coding method that independently evolves subpopulations using the fuzzy logic controller. The fuzzy logic controller has applied two fuzzy logic controllers that are implemented to adaptively adjust the crossover rate and mutation rate during the optimization process. The migration scheme in the multi-population genetic algorithms using fuzzy logic controllers is tested for a function optimization problem, and compared with other group migration schemes, therefore the groups migration scheme is then performed. The results demonstrate that the migration scheme in the multi-population genetic algorithms using fuzzy logic controller has a much better performance.

• Journal of the Optical Society of Korea
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• v.9 no.3
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• pp.111-118
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• 2005

In this paper, a new optical parallel binary arithmetic processor (OPBAP) capable of computing arbitrary n-bit look-ahead carry full-addition is proposed and implemented. The conventional Boolean algebra is considered to implement OPBAP by using two schemes of optical logic processor. One is space-variant optical logic gate processor (SVOLGP), the other is shadow-casting optical logic array processor (SCOLAP). SVOLGP can process logical AND and OR operations different in space simultaneously by using free-space interconnection logic filters, while SCOLAP can perform any possible 16 Boolean logic function by using spatial instruction-control filter. A dual-rail encoding method is adopted because the complement of an input is needed in arithmetic process. Experiment on OPBAP for an 8-bit look-ahead carry full addition is performed. The experimental results have shown that the proposed OPBAP has a capability of optical look-ahead carry full-addition with high computing speed regardless of the data length.

• Proceedings of the KIPE Conference
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• 2015.11a
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• pp.157-158
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• 2015

본 논문에서는 Matlab/Simulink와 Renesas사의 프로세서를 이용하여 차량용 변속 제어를 위한 모델기반 시스템을 구현하였다. 차량용 변속 제어를 위한 전체 시스템 모델은 Simulink와 Renesas사의 Real Time Interface(RTI)를 이용하여 구현한 후에 실험을 수행하였다. Matlab과 Renesas 제어보드의 컴파일러가 설계된 변속기 제어 모델의 C-소스 파일과 Object 파일을 자동으로 생성시켜주기 때문에 사용자에 의한 추가적인 프로그램의 Coding 없이 실제 시스템의 시뮬레이션과 실험을 동시에 수행할 수 있다.

• 제어로봇시스템학회:학술대회논문집
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• 2001.10a
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• pp.77.2-77
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• 2001

Profibus-DP is the performance-optimized version of Profibus, specifically dedicated to time-critical communication between automation systems and distributed peripherals. It is included into the International Fieldbus Standard IEC 61158. In this paper, The ASIC for Profibus-DP simple and intelligent slave is proposed and implemented. It can be fully compatible with Siemens LSPM2 as a pin-to-pin base and it also has a high-level function that can replace current intelligent slave boards with one chip. Also it can be used without special OS coding unlike SPC3 of Siemens.

• 제어로봇시스템학회:학술대회논문집
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• 2001.10a
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• pp.69.5-69
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• 2001

Computer simulations are widely used to analyze passenger safety in traffic accidents. ATB(articulated total body) is a computer simulation model developed to predict gross human body response to such dynamic environments as vehicle crashes and pilot ejections. ATB, whose code is open, has high flexibility and application capability that users can easily insert defined modules and functions. ATB is, however, inconvenient as it was coded in FORTRAN and it needs a formatted input file. Moreover, it takes much time to make input files and to modify coding errors. This study aims to increase user friendliness by adding a preprocessor program, WINATB(WiNdow ATB), to the conventional ATB. WINATB programmed in Visual C++ and OpenGL uses ATB IV as a dynamic solver ...