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척수강내로 잘못 주입된 Tranexamic Acid 로 발생한 중추신경계 독성 발생 및 진행에 대한 증례 보고
류길수,유승택,송현철,주진철 대한마취과학회 1993 Korean Journal of Anesthesiology Vol.26 No.6
Neurologic Sequelae after spinal anesthesia are extrenely rare, due in part to use of prepackaged and sterile kits and the small doses of local anesthectics employed. We have experienced 42 years old healthy male developed cental nervous system toxicity due to injection of wrong substance into subarachnoid space. And the patient recovered 3 days later with mild pulmonary edema and about 72 hour anterograde amnesia after symptomatic treatment.
Cnet 프로토콜을 이용한 PLC간의 다중무선통신에 관한 연구
류길수,이후락,정경열,Rhyu Keel-Soo,Lee Hoo-Rach,Chung Kyung-Yul 한국마린엔지니어링학회 2005 한국마린엔지니어링학회지 Vol.29 No.4
This paper addresses the design and implementation of a wireless network. proposed as a cost-effective support platform for PLCs. With this network. one or more supervising stations may access remote equipment like PLCs. An applicable communication methods are described and we applied efficient method among them to PLCs communication. The paper specifies these requirements and indicates methods to fulfill them. Also. it provides to the model of operation, and focuses on the implementation approach. The hardware and software design is described together with a number of critical points related to wireless communication on the Cnet. Furthermore, a discussion on system expandability and performance is tackled and some observations are stated. The main conclusion is, that the proposed method can feature good performance under normal operating conditions.
선박 주기관 원격제어시스템을 위한 통신방식에 관한 연구
류길수 한국마린엔지니어링학회 1998 한국마린엔지니어링학회지 Vol.22 No.6
In this paper, a communication method is proposed for the development of a main engine remote control system. The main engine control system compriese three subsystems such as RCS (Remote Control System) BCS (Bridge Control System) and SS (Safety System), Thus it is required to exchange data each other among these subsystems. The communication method has simplified hardware through the minimization of communication components where the interrupt method are employed for receiving and the polling method for transmitting. We discuss a methodology of using a ring buffer for data storage physically which has two buffers virtually for the effective use of memory. This communication method presents a good performance in the system which has rather small numbers of communication data.
류길수(Keel-soo Rhyu),박상우(Sang-woo Park),김달현(Dal-hyun Kim),박종일(Jong-il Park),정철민(Cheol-min Jeong) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.4
In this paper, we suggest the compiler implementation of a LD logic editor. The compiler load the LDI(Ladder Diagram Instruction) file saved by LD logic editor and analyze the lexicon and sentence to detect errors and convert to IL(Instruction List) of IEC 61131-3 standard. The converted IL is translated to binary code and the compiler generate the executable binary formed file to execute in SoftPLC.
감시제어 시스템의 신뢰성 향상을 위한 서버 및 네트워크 이중화
류길수(Keel-Soo Rhyu),윤병수(Byung-Soo Youn),임대근(Dae-Kwen Lim) 한국마린엔지니어링학회 2004 한국마린엔지니어링학회 학술대회 논문집 Vol.2004 No.-
Recently, together with development of communications technology, monitoring and control systems have been used in many fields. When monitoring and control systems are developed, one of important things is considered about a redundancy whenever hardware faults are occurred partly.<br/> In this paper, we introduce a monitoring and control system with a redundancy function for servers and networks. The system, therefore, has an active server and standby server. In fields. all field units have to be constructed 2 communication ports connected each server through communication lines. Also. each server's communication program is implemented by analyzing and handling fault elements, and is modularized for linking easily with a monitoring and control module. An experiment with 2 servers and 2 field units is constructed to demonstrate its effectiveness.<br/>