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Adaptive Resource Allocation for Traffic Flow Control in Hybrid Networks
( Sangwoo Son ),( Byungho Rhee ) 한국인터넷정보학회 2013 KSII Transactions on Internet and Information Syst Vol.7 No.1
Wireless network systems provide fast data transmission rates and various services to users of mobile devices such as smartphones and smart pads. Because many people use high-performance mobile devices, the use of real-time multimedia services is increasing rapidly. However, the preoccupation of resources by real-time traffic users is causing harm to other services―for example, frequent call interference, lowered service quality, and poor network performance. This paper suggests a resource allocation algorithm for effective traffic service support in a hybrid network. The main objective is to obtain an optimum value of data rates by comparing user requirements with the amount of resources that can be allocated. A new mechanism based on Adaptive-Quality of Service (QoS) and a monitoring system based on Queue-Aware are proposed. Adaptive-QoS supports effective resource control according to the type of traffic service, and the monitoring system based on Queue-Aware measures the amount of resources in order to calculate the maximum that can be allocated. We apply our algorithm to a test system and use Qualnet 4.5.1 to evaluate its performance.
Lim, Byungho,Jin, Jaewon,Yoo, Jin,Han, Seung Yong,Kim, Kyeongyeol,Kang, Sungah,Park, Nojin,Lee, Sang Moon,Kim, Hae Jin,Son, Seung Uk The Royal Society of Chemistry 2014 Chemical communications Vol.50 No.57
<P>Very thin microporous organic networks were formed on the surface of Fe<SUB>3</SUB>O<SUB>4</SUB> nanospheres by Sonogashira coupling of tetra(4-ethynylphenyl)methane and 1,4-diiodobenzene. The thickness was controlled by screening the number of building blocks. Through carbonization, Fe<SUB>3</SUB>O<SUB>4</SUB>@C composites were prepared. The Fe<SUB>3</SUB>O<SUB>4</SUB>@C composites with 4–6 nm carbon thickness showed promising reversible discharge capacities of up to 807 mA h g<SUP>−1</SUP> and enhanced electrochemical stability.</P> <P>Graphic Abstract</P><P>Fe<SUB>3</SUB>O<SUB>4</SUB>@C composites obtained <I>via</I> carbonization of microporous organic networks showed promising discharge capacities of up to 807 mA h g<SUP>−1</SUP> and electrochemical stability. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c4cc02068e'> </P>
ESC시스템을 위한 Dry Type HILS (Hardware in the Loop Simulation) 개발
손창현(Changhyun Son),이동환(Donghwan Yi),임병호(Byungho Im),이세진(Sejin Lee) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
HILS test method is generally useful for the ESC system validation. Recently trends in development of the ESC system are the rapid development of the software such as VAFs(Value Added Functions), and the integrated chassis control system development. The dry type HILS is the effective method to validate ESC system without the HCU hardware during quickly proceeding with the development process, and the interaction of the integrated chassis system without the each actuator hardware. In this paper the dry type HILS for the ESC system is proposed with the direct measurement approach of ECU coil’s current and the motor BEMF voltage control simulator. The paper investigates the dry type HILS system design based on the important technology, and the designed dry type HILS is verified though the simulation using real ECU. Also, in order to verify the coil’s current measurement reliability, the measurement result is compared to oscilloscope data.