insight@hanyang.ac.kr

Post Doc. at Embedded Software Systems Laboratory
Hanyang University

> About Me

Since 2015, I am a Post Doc. at Embedded Software Systems Lab at Hanyang University, I received my B.S in Depart of Electronics and Computer Engineering in 2006, Masters and Ph.D. in Same department in 2008 and 2015, respectively. I am a enthusiastic reader and was awarded from library of Hanyang University for reading more than two hundred books a year in 2005 and in 2007. This pages is to present most updated version of publications.

> Research

The focus of my research is on file system and storage system. 

> Work

Samsung Electronics - Memory Division, Research Intern                                  July 2013 - September 2013

> Publications

Androtrace: Framework for Tracing and Analyzing IOs on Android
Eunryoung Lim, Seongjin Lee, Youjip Won, 3rd workshop on Interactions of NVM/Flash with Operating-Systems and Workloads (INFLOW 2015), California, USA, Oct. 4-7, 2015

Dumb Design, Dumber Usage of Mobile Database
Myungsik Kim, Eunryoung Lim, Seongjin Lee, Youjip Won, IEEE Global Conference on Consumer Electronics (GCCE 2015), Osaka, Japan, Oct. 27-30, 2015

What Matters is an Application: on the Excessive I/Os in Smartphones
Myungsik Kim, Seongjin Lee, Youjip Won, The 11th IEEE International Conference on Wireless and Mobile Computing, Networking and Communications. (WiMob’2015), Abu Dhabi, UAE, Oct. 19-21, 2015

Comparative Study on I/O Characteristics of Mobile Web Browsers
Myungsik Kim, Seongjin Lee, Youjip Won, In Proceedings of 2015 IEEE 5th International Conference on Consumer Electronics Berlin (ICCE-Berlin), Berlin, Germany, Sep. 6-9, 2015

Parallelizing SHA-1
Hu-ung Lee, Seongjin Lee, Jae-woon Kim and Youjip Won, IEICE Electronics Express, 2015 Vol. 12, No.12, pp 0150371-20150371

LASER: Latency-Aware Segment Relocation for Non-Volatile Memory
Myungsik Kim, Seongjin Lee, Jinchul Shin and Youjip Won, Journal of Systems Architecture 2015, Vol. 61, No 8, P 361-373

Mining-based File Caching in a Hybrid Storage System
Seongjin Lee, Youjip Won, Sungwoo Hong,
Journal of Information Science and Engineering, Vol. 30. No. 6, Nov 2014

BLOCS: 블록 상관관계를 인지하는 시퀀스 패턴 마이닝 기반 하이브리드 스토리지 캐슁 알고리즘
이성진, 원유집
한국컴퓨터정보학회 논문지, 제19권, 제7호, 2014년 7월, pp.113-130

An Analysis on Empirical Performance of SSD RAID
Chanhyun Park, Seongjin Lee and Youjip Won,
In Proceedings of 29th International Symposium on Computer and Information Sciences (ISCIS 2014), (Lecture Notes in Information Sciences and Systems 2014), Krakow, Poland, 27-28, Oct, 2014

Real-time IO trace analysis of smartphone users
Kyuil Kim, Eunryoung Lim, Seongjin Lee, Youjip Won,
2nd International Conference on Advances on Computer , Electrical and Electronic Engineering (ICACEEE 2014), Paris, France, 7-8, July, 2014

IO Workload Characterization Of Tizen Based Consumer Electronics
Myungsik Kim, Seoungjin Lee and Youjip Won,
In Proceedings of the 18th IEEE International Symposium on Consumer Electronics (ISCE 2014), Jeju, Korea, 22-25, June, 2014

An Analysis on Empirical Performance of SSD RAID
Chanhyun Park, Seongjin Lee and Youjip Won,
29th International Symposium on Computer and Information Sciences (ISCIS 2014),(Lecture Notes in Electrical Engineering), Krakow, Poland, October 27-28, 2014

Reverse Engineering Essential SSD Characteristics
Seongjin Lee and Youjip Won,
제21회 한국반도체학술대회, 2014년 2월 24-26일, 한양대학교, 서울

Framework for Analyzing Android I/O Stack Behavior: from Generating the Workload to Analyzing the Trace
Sooman Jeong, Kisung Lee, Jungwoo Hwang, Seongjin Lee, Youjip Won,
Future Internet 2013, 5(4), Special Issue for Mobile Engineering, MDPI(ISSN 1999-5903), 591-610; doi:10.3390/fi5040591

I/O Stack Optimization for Smartphones
Sooman Jeong, Kisung Lee, Seongjin Lee, Seoungbum Son, Youjip Won,
2013 USENIX Annual Technical Conference (USENIX ATC '13), June 26-28, 2013, San Jose, CA, USA, (Acceptance Ratio: 14%, Best Paper Award)

AndroStep: Android Storage Performance Analysis Tool
Sooman Jeong, Kisung Lee, Jungwoo Hwang, Seongjin Lee, Youjip Won,
The 1st European Workshop on Mobile Engineering (ME'13), Feb. 26, 2013, Aachen, Germany

Design and Implementation of Cache Manager for Hybrid Storage
Seongjin Lee, Youjip Won,
The Third International Conference on Digital Information Processing and Communications (ICDIPC 2013), Jan. 30, 2013 - Feb. 1, 2013, Dubai, UAE

하이브리드 스토리지 시스템을 위한 마이닝 기법
이성진, 원유집,
대용량 MLC NAND 기반 SSD 기술 워크샾, 2013년 1월 24일 ∼ 26일, 용평리조트

Multithreading Embedded Multimedia Application for Vehicle Blackbox,
Jajin Koo, Jeongheon Choi, Youjip Won, and Seongjin Lee,
in Recent Progress in Data Engineering and Internet Technology. (Lecture Notes in Electrical Engineering) vol. 156, F. L. Gaol, Ed., ed: Springer Berlin Heidelberg, 2013, pp. 379-384.

Session Based Classification of Internet Applications in 3G Wireless Network
Seongjin Lee, Jongwoo Song, Soohan Ahn, Youjip Won,
Computer Networks, Elsevier, DOI:10.1016/j.comnet.2011.08.010

Hybrid 스토리지 관리 장치의 기술동향과 성능 분석
이성진, 원유집,
한국정보과학회, 제 38회 추계학술발표회, 2011년 11월 25-16일, 서울대학교, 서울

Performance Analysis of SSD/HDD Hybrid Storage Manager
Seongjin Lee, Seokhui Cho, Haesung Kim, Youjip Won,
The 16th North-East Asia Symposium on Nano, Information Technology and Reliability, October 24 - 26, 2011, Macau, China.

SSD를 위한 파일시스템의 벤치마크
이성진, 원유집,
한국정보과학회, 2011 한국컴퓨터종합학술대회 (KCC 2011), 2011년 6월, 경주

Multithreading Embedded Multimedia Application for Vehicle Blackbox
Jajin Koo, Jeongheon Choi, Youjip Won, Seongjin Lee,
In proceedings of 2011 International Conference on Data Engineering and Internet Technology (DEIT 2011), 15-17 March 2011, Bali Dynasty Resort, Bali, Indonesia

가상 SSD 시뮬레이터
김해성, 김주현, 이성진, 원유집,
한국정보과학회, 제37회 추계학술발표회, 2010년 11월

FTL Design for TRIM Command
Joohyun Kim, Haesung Kim, Seongjin Lee, Youjip Won,
15th International Workshop on Software Support for Portable Storage (IWSSPS 2010), Scottsdale, AZ, USA, October 28, 2010

Characteristics of the token bucket parameters with self similar network traffic
Dashdorj, Y. and Chuluunbaatar, N. and Batzul, B., Lee Seongjin,
Strategic Technology (IFOST), 2010 International Forum on, Oct 13-15, 2010, Ulsan, Korea

VSSIM : Virtual SSD Simulator
Joohyun Kim, Haesung Kim, Seongjin Lee, Youjip Won,
9th USENIX Symposium on Operating System Design and Implementation (OSDI '10), Vancouver, BC, Canada, October 4-6, 2010

Classifying Internet Applications on Early Stage in 3G Environment
Taizhong Quan, Seongjin Lee, Youjip Won,
In proceeding of 2009 IEEE International Conference on Network Infrastructure and Digital Content (IC-NIDC2009), Beijing, China 2009, pp435--439

데이터 마이닝을 이용한 무선 인터넷 서비스 분류기법
이성진, 송종우, 안수한, 원유집, 장재성,
한국정보과학회, 한국정보과학회논문지 제 36권 제 3호, 2009. 6, pp.153-162

On the Multi-Scale Behavior of Packet Size distribution in Internet Backbone Network
Seongjin Lee, Youjip Won, Dong-Joon Shin,
NetworkOperations and Management Symposium, 2008. NOMS 2008. IEEE/IFIP, Salvador da Bahia, Brazil, April 2008

Modeling and Analysis of Wireless LAN traffic
Dashdorj Yamkhin, Seongjin Lee and Youjip Won,
Journal of Information Science and Engineering, Vol.25, No.6 6 (participated as unacknowledged author of the paper)

On-line prediction of Non-stationary Variable-Bit-Rate Video Traffic
Sungjoo Kang, Seongjin Lee, Youjip Won, Byeongchan Seong,
Signal Processing, IEEE Transactions on, Volume: 58, Issue: 3, Part: 1, March, 2010, Page(s): 1219 - 1237

무선 네트워크에서의 효율적 트래픽 분류 기법 연구
이성진, 송종우, 안수한, 원유집, 장재성,
한국정보과학회 2008 종합학술대회 논문집 제35권 제1호(D), 2008. 6, pp. 485 ~ 490

무선 랜 트래픽의 분석과 모델링
대쉬도즈 얌힌, 이성진, 원유집,
한국통신학회, 한국통신학회논문지 제33권 제8호, 네트워크 및 서비스, 2008. 8, pp. 667~680.