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符號分割多元接續 通信시스템을 爲한 擴散符號系列의 複合構成에 關한 硏究
崔三吉,李正宰 東義大學校産業技術開發硏究所 1992 産業技術硏究誌 Vol.6 No.-
Using the common hardware parts with the same generating algorithms, we construct a combined generator to be able to produce GMW code and No-Kumar code sequences for code division multiple access communication systems. Especially we simplified the conventional GMW code generating circuits by using the equivalent logic circuits instead of ROM.
CSMA/CD 프로토콜을 이용한 근거리 통신망의 성능평가
진성호,최삼길 東義大學校産業技術開發硏究所 1998 産業技術硏究誌 Vol.12 No.-
This paper analyzes performance of Dongeui Network using Internet Advisor of HP. There are many examples of transmission efficiency, response time, reliability of system and transmission distance through the imitate inspection analysis that is in the existent network performance. But those analysis is the imitate inspection. So, it has many differences between real network. And, this paper will approach the real network analysis using traffic characteristics, utilization, and the number of used node in the Dongeui Network. Hence, those research data will be important basis of network design and enlargement.
Service Scenarios for Green House Gas Monitoring Service over NGN
Choi, Sam-Gil,Kim, Dong-Il,Lee, Soong-Hee The Korea Institute of Information and Commucation 2011 Journal of information and communication convergen Vol.9 No.4
Considerations for green house gas (GHG) monitoring over next generation network (NGN) are regarded as a green convergence service for the successful reduction of GHG emission leading to resolve global warming issue in that NGN is expected to provide secure connections to fixed-and-mobile converged (FMC) features. Model-based scenario approach is an appropriate way to standardize and actualize the desired service. This paper first describes the service scenario of GHG monitoring service over NGN.
Kwan-Ho Park,Young-Cheol Choi,Jong-Gil Kim,Ji-Young Choi,Won-Tae Kim,Si-Kab Nho,Jae-Sam Hwang 한국응용곤충학회 2009 한국응용곤충학회 학술대회논문집 Vol.2009 No.05
Protease from various sources have been studied biotecnologically. For biotechnological applications, one highly preferred enzyme is protease. There have been no reports of cloned genes encoding digestive proteases in the Laccotrephes japonenis, Ranatra unicolor, Muljarus japonicus. These insects are considered to be a predator of aquatic insects. RT-PCR was used to amplify cDNA fragments for digestive proteases from total RNA the hole body of the insects. The flanking sequences of the 5'- and 3'- end of the these genes were characterized by RACE-PCR. Sequence analysis showed that these genes contained complete ORF. The deduced amino acid sequences of these protease showed 62% identity to the serine protease of Creontiades dilutus, 58% to Lygus loneolaris trypsin-like serine proteinase, 54% to Triatonatoma infestans salivary trypsin. To generate Laccotrephes japonensis serine protease, the DNA fragment coding for serine protease is cloning into suttle vector pBACⅠ, named pBAC1-JG and infected to Spodoptera frugiperda (sf9) insect cell. The cDNA encoding JG was expressed as a 32-kDa polypeptide in baculovirus infected insect cells and the recombinant protein showed activity in the protease enzyme assay using gelatin as a substrate.
최삼길 東義大學校 産業技術開發硏究所 1997 産業技術硏究誌 Vol.11 No.-
In this paper, We shall examine capacity evaluation of radio network system. As high media society approaches the demand for radio communication network, especially the moving radio data service is rapidly increasing. In addition, We also examine and analyze the movement for standardization of radio network in advanced country in the hope to contribute some ground works to domestic technique trying to that direction for standardization of radio network implement.
THREE STAGE SWITCH구조의 BLOCKING율 계산
최삼길,김동일 東義大學校産業技術開發硏究所 1993 産業技術硏究誌 Vol.7 No.-
Generally, the blocking ratio of the witching systems is estimated by Jacobeus method and Lee-Legal method. But, the difference between blocking ratio of general condition and that of special condition it's difficult to apply. In this paper, we provide a blocking ratio calculating procedure model of three stage switch network in electronic switching system to which we can apply a modified Jacobeus method.
崔三吉,李正宰 東義大學校産業技術開發硏究所 1989 産業技術硏究誌 Vol.3 No.-
In this paper, we design a code synchronization system with a sliding correlator as the acquisition subsystem, DLL as the tracking subsystem, and Bent sequence generator as the local code generator for BPSK DS-CDMA communication system. We focus our attention on techniques and their performance for accomplishing code synchronization, and show that these techniques can be used for mobil radio networks. Experimental results are included which verify the analytical results.
최치영,홍선기,강태삼,김수길 호서대학교 반도체제조장비국산화연구센터 2001 반도체장비학술심포지움 Vol.2001 No.-
본 논문에서는 레이져 마킹용 갈바노미터의 구동을 위하여 마킹에 필요한 벡터 폰트의 개발환경 구축하고, 만들어진벡터 폰트를 PC와 구동 장치간의 통신용 인터페이스를 제작하여 갈바노미터(galvanometer)에 송신, 출려할 수 있도록 하였다.벡터 폰트의 곡선 처리는 베지어(Bezier) 함수를 사용한 외곽선 폰트(outline pont)를 사용하였다.폰트 에디터를 이용하여 문자를 작성한 후 문자의 외곽선 정보를 인터페이스 카드에 보내고, 이 데이터를 D/A변환기를 통해 갈바노미터 구동장치를 구동하고, 레이져를 갈바노미터 반사경에 조사하여 폰트를 출려할 수 있도록 하였다.인터페이스 카드는 16비트 D/A변환기를 이용하여 PC의 ISA 버스를 이용하였다.실험을 통해 개발된 장치의 구동이 올바르게 동작함을 확인하였다.