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SpecCharts로부터 합성 가능한 Synchronous VHDL 코드 생성기 설계 및 구현
윤성조,최진영,한상용,이정아,Yun, Seong-Jo,Choi, Jin-Young,Han, Sang-Yong,Lee, Jeong-A. 한국정보처리학회 2000 정보처리논문지 Vol.7 No.11
가상 프로토타입(Virtual Prototyping: VP) 방법론을 이용하면 내장형 시스템을 설계하고 구현할 때에 비용을 절감하면서 제품의 개발기간을 단축할 수 있다. VP는 S/W component, H/W component 그리고 S/W 와 H/W를 연결하는 Interface component로 구성되어 진다. VP의 구성 요소중 H/W component를 구현하는 방법은 여러 가지가 있었으나 시스템 명세 언어로부터는 하드웨어 컴포넌트로 구현하는 방법을 고려하고자한다. 그러나 시스템 명세 언어로부터 생성된 H/W component 용 VHDL 코드는 항상 합성 가능한 코드라고 할 수 없다. 본 논문에선 시스템 명세 언어로부터 검증을 용이하게 하는 하드웨어 구현을 위하여 명세언어로써 SpecCharts를 이용하고 이로부터 동기적 의미론을 만족하는 합성 가능한 VHDL 코드를 생성하는 방법론을 제시한다.
멧돼지 대장으로부터 Bacillus atrophaeus MPL-01의 분리 및 항진균 활성의 특성
윤성조,노재영,Yun, Sung-Jo,Rho, Jae-Young 한국미생물학회 2013 미생물학회지 Vol.49 No.2
멧돼지 대장에서 MPL-01 균주를 분리하여 균주의 형태학적, 생리 생화적 특성 및 지방산 조성을 분석하여 Bacillus임을 확인하였다. 16S rRNA 유전자 서열 분석 결과 MPL-01 균주는 Bacillus atrophaeus와 거의 일치하므로(99.99%) B. atrophaeus MPL-01로 명명하였다. MPL-01 균주는 고추 탄저병을 일으키는 Colletotrichum acutatum에 대하여 가장 강한 항진균 활성을 나타내었다. 배양액의 ethyl acetate 추출액에서 항진균 활성은 물론이고 계면활성도 확인하였다. 그러므로 B. atrophaeus MPL-01은 농작물 병원성 곰팡이 제어를 위한 bio-control 개발에서 유용하게 사용될 것이다. A bacterial strain MPL-01 was isolated from the large intestine of a wild boar. The strain was shown to have morphological, physiological and biochemical characteristics, fatty acids composition typical of Bacillus. The 16S rRNA gene sequence showed that the isolate formed distinct phyletic line that was most closely related to this of Bacillus atrophaeus (99.99%). It was proposed that the strain is classified as B. atrophaeus MPL-01. The strain MPL-01 exhibited the strongest antifungal activity against Colletotrichum acutatum, the pathogen of anthracnose of chili peppers. The ethyl acetate extract of culture filtrate possessed not only the antifungal activity but also the bio-surfactant activity. Therefore, the strain MPL-01 could be a useful bacterium in the development of bio-control process against the pathogenic fungi.
SpecCharts 로부터 합성 가능한 Synchronous VHDL 코드 생성기 설계 및 구현
윤성조(Seong Jo Yun),최진영(Jin Young Choi),한상용(Sang Yong Han),이정아(Jeong A Lee) 한국정보처리학회 2000 정보처리학회논문지 Vol.7 No.11
We are using a methodology of virtual prototype(VP) which can reduce costs and developement time to the market. VP is composed of S/W component, H/W component, and interface component which links H/W to S/W. There are many methods of realizing H/W components, but we adopt a method which translates from system specification into hardware description in VHDL. In this paper, we present design and implementation of code generator from SpecCharts as system specification language to a VHDL code which can be synthesized and verified. The verification becomes feasible when the hardware satisfies synchronous semantics, which we call, Synchronous VHDL.
무인수상정을 위한 경로선 추종이 가능한 개선된 Dynamic Window Approach
김효곤,윤성조,최영호,이정우,유재관,원병재,서진호,Kim, Hyogon,Yun, Sung-Jo,Choi, Young-Ho,Lee, Jung-Woo,Ryu, Jae-KWan,Won, Byong-Jae,Suh, Jin-Ho 대한임베디드공학회 2017 대한임베디드공학회논문지 Vol.12 No.5
Recently, autonomous navigation technology, obstacle recognition, and obstacle collision avoidance technology are actively being developed for an unmanned surface vehicle (USV). The path to move from the current location to the destination should be planned, in order for an USV to autonomously operate safely to its destination. The dynamic window approach (DWA) is a well-known navigation scheme as a local path planning. The DWA algorithm derives the linear velocity and angular velocity by evaluating the destination direction, velocity, and distance from the obstacle. However, because DWA algorithm does not consider tracking the path, when using only the DWA algorithm, the ship may navigate away from the path line after avoiding obstacles. In this paper, we propose an improved DWA algorithm that can follow path line. And we implemented the simulation and compared the existing DWA algorithm with the improved DWA algorithm proposed in this paper. As a result, it is confirmed that the proposed DWA algorithm follows the path line better.
수중로봇 소프트웨어 시스템의 요구사항을 반영한 ROS 기반의 계층화된 소프트웨어 아키텍처의 설계
이정우,최영호,이종득,윤성조,서진호,Lee, Jung-Woo,Choi, Young-Ho,Lee, Jong-Deuk,Yun, Sung-Jo,Suh, Jin-Ho 대한임베디드공학회 2017 대한임베디드공학회논문지 Vol.12 No.5
Underwater robots operating in constrained underwater environment have requirements for software systems. Firstly, it is necessary to provide reusable common software components for hardware interface of sensors and actuators that are frequently used in underwater robots. Secondly, it is required to support distributed execution environment on multiple embedded controllers. Thirdly, it is need to implement a monitoring system capable of high-speed and large-data transmission for underwater robots operating in an environment where it is difficult to check the robot status. For these requirements, we have designed the layered architecture pattern and applied several design patterns to enhance the reusability and the maintainability of software components, In addition, we overlaid the broker architecture pattern to support distributed execution environments. Finally, we implemented the underwater robot software system using ROS framework based on the software architecture design. In order to evaluate the performance of the implemented software system, we performed an experiment to measure the response time between components and the transmission rate of the monitoring data, and obtained the results satisfying the required performance.