[카테고리:] 미분류

Flash-Aware RAID Techniques for Dependable and

High-Performance Flash Memory SSD

◈  연  사 : 신 동 군 교수 (성균관대학교 정보통신공학부)

◈ 일  시 : 2010년 4월 16일 (금) 오후 2:45 ~ 4:15

◈ 장  소 : LG동 강당

◈ 초청자 : 유 승 주 교수 (T.2379)

Abstract

Solid-state disks (SSDs), which are composed of multiple NAND flash chips, are replacing hard disk drives (HDDs) in the mass storage market. The performances of SSDs are increasing due to the exploitation of parallel I/O architectures. However, reliability remains as a critical issue when designing a large-scale flash storage. For both high performance and reliability, Redundant Arrays of Inexpensive Disks (RAID) storage architecture is essential to flash memory SSD. However, the parity handling overhead for reliable storage is significant. We propose a novel RAID technique for flash memory SSD for reducing the parity updating cost. To reduce the number of write operations for the parity updates, the proposed scheme delays the parity update which must accompany each data write in the original RAID technique. In addition, by exploiting the characteristics of flash memory, the proposed scheme uses the partial parity technique to reduce the number of read operations required to calculate a parity. We evaluated the performance improvements using a RAID-5 SSD simulator. The proposed techniques improved the performance of the RAID-5 SSD 46% and 37% on average in comparison to the original RAID-5 technique and the previous delayed parity updating technique, respectively.

선비 정신과 선비 문화

◈  연  사 : 한 영 우 명예교수 (서울대학교)

◈ 일  시 : 2010년 3월 26일 (금) 오후 2:45 ~ 4:15

◈ 장  소 : LG동 강당 

◈ 초청자 : 장 수 영 교수 (T.2211) 

Abstract 

1. 선비정신은 왜 중요한가

2. 선비정신이란 무엇인가

1) 철학 및 종교

2) 정치, 사회적 영향

3) 예술에 반영된 선비정신

4) 조선시대 기록문화

3. 결론

Compressive sensing : theory and applications

◈연  사 : 예 종 철 교수 (KAIST 바이오 및 뇌공학과)
◈ 일  시 : 2010년 3월 5일 (금) 오후 4:30 ~ 5:30
◈ 장  소 : LG동 강당
◈ 초청자 : 조 준 호 교수 (T.2377)

Abstract

Recently, a new sampling theory called compressive sensing theory has been developed by signal processing and applied mathematics communities. According to compressive sensing, very accurate reconstruction is possible from severely limited data measurements under Nyquist sampling limit as long as it is sparse or can be sparsified under appropriates sparsifying transform. In this talk, we introduce the basic theory, and demonstrate how this theory can revolutionize various bio and neuro-imaging modalities such as NIRS, MRI, optics, T-ray imaging, CT, and PET; and illustrates how this theory gives us new insight in understanding biological systems.

Molecular Transistors and Polymer Memory Devices

◈연  사 : 이 탁 희 교수 (광주과학기술원)
◈ 일  시 : 2010년 3월 12일 (금) 오후 2:45 ~ 4:15
◈ 장  소 : LG동 강당
◈ 초청자 : 권 오 대 교수 (T.2212)

Abstract

The idea of utilizing functional molecules as the electronic components in future ultrahigh-density electronic devices has generated tremendous attention. Obtaining transistor action from molecular orbital control has been the outstanding challenge of the field of molecular electronics nearly since its inception. In this talk, we demonstrate a direct electrostatic modulation of orbitals in a molecular transistor configuration, with both effective gate control and enhanced resonant coupling of the orbitals to the source and drain electrodes [1]. In second part of talk, our recent re-search on the organic non-volatile memories will be discussed [2].
If time is allowed, I will also briefly discuss other research results on nanoscale logic circuits [3] and graphene-electrode optoelectronic devices.

Silicon RF Biomolecular Sensor Using Nuclear Magnetic Resonance

◈연  사 : 함 돈 희 교수 (Harvard University)
◈ 일  시 : 2010년 3월 19일 (금) 오후 2:45 ~ 4:15

◈ 장  소 : LG동 강당

◈ 초청자 : 김 범 만 교수 (T.2231)

Abstract

We have recently developed a 0.1-kg nuclear magnetic resonance (NMR) system that can be held at the palm of the hand. The entire system is 1200 times lighter, 1100 times smaller, yet 150 times more spin mass sensitive than a 120-kg state-of-the-art commercial benchtop NMR system. The drastic miniaturization was made possible by combining the physics of NMR with the high-performance silicon-CMOS radio-frequency (RF) integrated circuit. The miniature NMR system can be used to detect biomolecules such as cancer marker proteins and viruses, thus, can be useful for disease screening. This work showcases how silicon RF chips can be used not only for wireless applications, but also for disease screening in the low-cost, hand-held platform, in direct interface with biological samples. The NMR system can be also used for oil detection, environment control, and potentially, for quantum computing.

Personalized Display Techniques for Next Generation DTV

-. 연 사 : 김창익 교수(ICU-한국정보통신대학교 공학부)

-. 일 시 : 2007년 11월 16일 (금) 오후 2:45 ~ 4:15

-. 장 소 : LG동 105호

-. 초청자 : 정 홍 교수 (T. 2223)

Abstact

With the advent of the high resolution DTV, the demand for customized display techniques has dramatically increased. In order to meet this demand, it is neces-sary to provide a user with a personalized display environment in which the user can enjoy various alternatives. In this presentation, we propose a novel framework, which allows for various functional approaches, to enhance users’ viewing experi-ence. First of all, we break the personalized displays into three categories; display for raising immersiveness, display for better understanding of contents, and display for viewing pleasure. In this talk, we address three parts in more detail and introduce our system implemented. This system can be applied to the next genera-tion DTV, which envisages personalized display techniques. Extension of the pro-posed system is our on-going work to provide more various personalized viewing options.

검독수리-A급 전투체계용 사격통제 기술

-. 연 사 : 서태일 박사(국방과학연구소 함정전투체계개발단)

-. 일 시 : 2007년 11월 30일 (금) 오후 2:45 ~ 4:15

-. 장 소 : LG동 105호

-. 초청자 : 김효태 교수 (T. 2217)

Abstact

현재 한국 해군의 함정 전투체계 현황과 발전방향을 제시하고,
차기고속정용 검독수리-A급 전투체계의 함포사격통제 기술에 대한 소개한다.

◇윤리경영 – 21세기의 새로운 경쟁력

-.연 사 : 이종영 박사
(한국기업윤리학회 고문, 한국산업경제개발원 상임고문)

-. 일 시 : 2007년 9월 21일 (금) 오후 2:45 ~ 4:15

-. 장 소 : LG동 105호

-. 초청자 : 이승구 교수 (T. 2236)

Abstract
기업의 사회적 책임은 1) 경제적으로 이익을 올릴 책임(Profit), 2) 사회에 공정해야 할 책임(People), 3) 지구환경을 보호해야 할 책임 (Planet)의 3P이다.
21세기 기업의 지속적 성장, 발전을 위해서는 무조건 강력한 기업(Strong company)로서는 안되고, 기업의 책임을 다하고, 사회와 공생을 목표로 하는 착한 기업(Good company)이라야 한다. 그래서 정태적인 기업윤리의 개념도 동태적인 [윤리경영]의 개념으로 바뀌어야 하고, 기업윤리와 기업의 사회적 책임이 기업경영에 활용해야 한다.

지역발전과 포항테크노파크

-. 연 사 : 이성재 원장(포항테크노파크)

-. 일 시 : 2007년 9월 28일 (금) 오후 2:45 ~ 4:15

-. 장 소 : LG동 105호

-. 초청자 : 김상우 교수 (T. 2237)

Abstract

◦ 지역발전을 둘러싼 국내외 상황
◦ 우리의 기술수준 분석
◦ 혁신을 위한 정부정책의 전개방향
◦ 포항테크노파크의 역할 
 

통신 기술 및 산업

-.연 사 : 정윤채 상무(삼성종합기술원)

-. 일 시 : 2007년 10월 5일 (금) 오후 2:45 ~ 4:15

-. 장 소 : LG동 105호

-. 초청자 : 임기홍 교수 (T. 2228)

Abstact

During last several decades, there have been tremendous changes in the field of telecommunications, including the Internet revolution and the wireless explosion. These two domains brought forth many disruptive differences in the telecommu-nication devices and equipments, networks and services, and in our way of com-municating with each other, eventually resulted in the new way of life. However, we still observe the Internet based services evolving into new concepts, so called web 2.0, and the wireless services delivering video and data. These consecutive revolutionary changes seem to resemble the first telecommunications revolution in the 19th century. Korea once used to be very under-developed country in the telecommunications industries and technologies, but now is one of the top tier countries even with No.1 in the Digital Opportunity Index evaluated by ITU. By looking at the past history and the current position of the telecommunications in-dustry, it may be possible to find the new way ahead toward the next generation of the technology and industry.

Within the next decade, we still need to overcome big roadblocks to migrate towards seamless connectivity for enabling ever richer content and service experiences. There are a number of wireless connectivity solutions being discussed or developed, as either public standards or proprietary solutions, to enable future visions of the personal network. High speed data and multimedia service needs would come into the wireless market, even with changes in the business models, and is expected to challenge both the incumbent service pro-viders as well as the wireless gears and chip vendors. The rich and high-rate multimedia contents which currently are being delivered down to PCs would soon show up in mobile handsets, and further penetrate in depth into the personal environment of experiences, and the personal devices would have to be equipped with more bandwidth and with a variety of wireless connectivity solutions. Korea recently launched the first mobile internet service based on 802.16e, locally called WiBro, hoping to open a new era of wireless data which would continue the country’s success stories on the wireless voice and the wireline data services. Though the market is not big, Korea is known as the test bed of the new IT technologies and services, due to the proliferation of internet and mobile services and the prompt responses from the market. A few examples of this new trend include, but not limited to, personal blog, online games, home and mobile shopping, convergence devices, VoIP services, and so on. Even though the tele-communications industry in Korea seems to be in good shape, there are many challenges and threats as well as opportunities for new growth. The role of technology is much more important than ever, and the business capabilities should be strengthened in order to proceed to the world market.