http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
송인섭(Inseob Song),김대인(Daein Kim),최희영(Heeyoung Choi),황부현(Buhyun Hwang) 한국정보과학회 1998 한국정보과학회 학술발표논문집 Vol.25 No.2Ⅰ
이동 에이전트는 사용자를 대신하여 사용자가 요구한 작업을 처리하기 위하여 에이전트 서버 사이를 이주하는 자율적인 소프트웨어 프로세스이다. 이동 에이전트 시스템에서 이동 에이전트는 자율적으로 이동하기 때문에 이동 에이전트의 정확한 위치를 관리하는 것은 매우 어려운 일이다. 따라서 이동 에이전트 서버 사이의 통신을 위하여 이동 에이전트의 위치를 추적하는 효율적인 방법에 대한 연구가 필요하다. 본 논문에서는 에이전트 시스템에서 이진 탐색 방법을 이용하여 지역 단위로 이동 에이전트의 위치를 추적하는 방법을 제안한다. 그리고 해석적 모델을 이용하여 제안된 방법의 성능 및 타당성을 보인다.
Na, Youngseung,Suh, Junwon,Song, Inseob,Choi, Kyoung-Hwan,Choi, Hanshin,Kim, Ki Buem,Park, Jun-Young Elsevier 2011 International journal of hydrogen energy Vol.36 No.15
<P><B>Abstract</B></P> <P>Air-blowing type direct methanol fuel cells (DMFCs) are becoming more attractive for portable electronic devices as alternatives to the currently used Li-ion batteries because they are quieter with less parasitic power loss than the active-type DMFCs used a compressor. However, the blower has difficulty in providing a uniform air supply with a high flow rate to the cathode manifolds of the stack. In this study, a design that allows accurate measurements of the flow distribution on the air-blowing DMFC stack is developed using a novel scientific approach and careful construction of the experimental apparatus. Using this novel experimental technique, a novel stack design is produced to improve the performance and stability of the DMFC system under air-blowing conditions. Furthermore, auxiliary devices, such as ducts, guide vanes, foams, membrane and wedges are integrated and evaluated to the stack to assist in uniform flow by the blower. In particular, the inlet foam, membrane and upper angle duct help improve the uniformity of the lateral and longitudinal flow distribution in the air-blowing stack. Finally, the air-blowing stack with these auxiliary devices shows high performance with operational stability.</P> <P><B>Highlights</B></P> <P>► Stable operation of DMFCs with a high power density is possible under air-blowing conditions with flow aid apparatus. ► The inlet foam, membrane and upper angle duct play a key role in improving the flow uniformity of the stack cathode. ► This might be due to the increased pressure difference in the cathode manifolds by the flow resistors. ► A design that allows accurate measurements of the flow distribution on the air-blowing DMFC stack is established using a novel scientific approach.</P>
Development of a Microelectronic Cooling Device using a Micro Capillary Pumped Loop
JaeYong Lee,ChongBo Kim,Hayong Yun,KyungIl Cho,HyeJung Cho,InSeob Song 대한기계학회 2001 대한기계학회 춘추학술대회 Vol.2001 No.3
A capillary pumped loop (CPL), which is a microfabricated capillary pressure driven heat exchange cycle, is proposed as an alternative means of microelectronics cooling. In order to investigate the behavior of the Micro-CPL system, a lumped parameter model has been newly developed. The system simulation has been conducted for the capillary evaporator, condenser and two connecting valves. Specifically, a prototype micro-CPL with 20 W/㎠ cooling capacity has been modeled and tested. From the result, the prototype has been operated successfully under the heat flux with the heat junction temperature below 100℃. Also the system simulation model has well captured the overall trend of the experimental test data. Finally, the feasibility of Micro-CPL for high power chip cooling and the usefulness of the cycle simulation model for system design have been shown from this study.
Bae, Suk Joo,Kim, Seong-Joon,Park, Jong In,Park, Chan Woong,Lee, Jin-Hwa,Song, Inseob,Lee, Naesung,Kim, Ki-Bum,Park, Jun-Young Elsevier 2012 International journal of hydrogen energy Vol.37 No.12
<P><B>Abstract</B></P><P>To expand commercial applications of polymer electrolyte membrane fuel cells (PEMFCs), the evaluation time for their durability must be shortened. This article provides a straightforward accelerated degradation testing (ADT) procedure for PEMFC for easy and quick implementation of the procedure. The ADT procedure includes statistical modeling of degradation patterns of membrane electrode assemblies (MEAs) in PEMFCs under startup–shutdown cycling conditions. For this purpose, we propose a nonparametric degradation model to describe the nonlinear performance degradation paths of PEMFC MEAs. The analysis results indicate that the nonparametric approach provides more accurate estimates of the observed degradation data than other parametric approaches. Based on the nonparametric degradation model, we suggest a method to predict failure-times under normal operating conditions by estimating the time-scale factor under accelerated operating conditions.</P> <P><B>Highlights</B></P><P>► We provide a straightforward accelerated degradation testing procedure for PEMFC. ► We propose a nonparametric degradation model to describe the nonlinear performance degradation paths of PEMFC. ► We suggest a method to predict failure-times under normal operating conditions by estimating the time-scale factor.</P>
최종록(Jong-Rock Choi),정길성(Gil-Sung Jung),김동락(Dong-Rak Kim),박정건(Jeong-Kurn Park),김영재(Young-Jae Kim),김진일(Jin-Il Kim),송인섭(Inseob Song) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12
To solve the power capacity shortage problem of e-Mobility, such as Unmanned Surveillance Vehicle, Direct Methanol Fuel Cell and Lithium Ion Battery hybrid power were developed. This paper will focus on the development process of the fuel cell controller. The newly developed fuel cell system consists of three 1kW range stacks, each of which can be operated and be controlled individually. In the initial stages of the system development, the three stacks had separate controllers respectively. The stacks now use a single unified controller, while they can still be operated and controlled individually by algorism derived from object-oriented method.