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▣ Title : Energy-Bounding Approaches for Robustly Stable Haptic Interaction,
               Bilateral Teleoperation, & Robot Contact Control
▣ Speaker : Prof.  Jeha Ryu (GIST)
▣ Date & Time : Friday, October 5 (14:00pm ~ 15:30pm)
▣ Place : LG Research Building, Room #101
▣ Host : Prof. Sangchul Won (Tel. 2221)
              BK21 Educational Institute of Future Information Technology
▣ Abstract : Haptic or force feedback can provide useful information to the operator when interacting with virtual, augmented, and real environments through haptic sensations. In these systems, stability is a key issue in haptic interaction control since haptic interaction has a bidirectional energy flow, unlike visual or auditory displays. Instability in haptic systems can significantly deteriorate haptic sensations and may even harm human users or cause damage to the haptic interfaces. Besides stability, high quality force feedback must be provided while guaranteeing interaction stability in order to deliver a transparent haptic sensation to the user.  This seminar presents the EBA (Energy Bounding Approaches) for the robustly stable and transparent haptic interaction, haptic teleoperation, and general robot contact controls.  The proposed approaches are almost the same for the above three systems.  Moreover, the controller is very simple and so robust against the time delays and uncertainties in the system.  Real experimental results including intercontinental haptic teleoperation will be presented. Finally, real haptic teleoperation from POSTECH to GIST will be demonstrated at site.

The Elements of Presentation

Useful Expressions

Tutor Evaluation Snyder Comments

◈ 제목 : 만남의 이율배반과 21세기 변신의 욕구
◈ 연사 : 여명숙 교수 (POSTECH 창의IT융합공학과)
◈ 일시 : 2012년 6월 15일 오후 2시 ~ 3시 30분
◈ 장소 : LG연구동 1층 강당
◈ Host : BK21 미래정보기술사업단
◈Abstract : 최근 열풍이 불고 있는 융합 패러다임과 융합기술산업 관련 정책 이슈들은 모두 하나의 그림을 지향하고 있다. 인문학과 과학기술의 교차로 이미지를 담은 스티브 잡스의 강연 슬라이드가 그것이다.  인류 문명사에서 언제 융합이 안 중요한 적이 있었던가?  대체 누가 뭐라 했나? 왜 갑자기 호들갑인가? 슬로건뿐이고 구체적인 실행계획도 없는 얄팍한 ‘융합’ 담론이 지긋지긋함에도 불구하고 포기하지 못하는 미련은 무엇 때문인가? 에로스 외에 다른 융합이 있기나 한가? 우리는 정말 그 한 장의 슬라이드에 대해서 할 말이 없는가?
 본 논의는 융합기술 현장 경험을 바탕으로 학문간 또는 기술간, 나아가 산학연 경계 허물기의 현실적인 가능성을 모색하고, 좀 더 구체적으로는 가상성(virtuality)의 의미에 대한 왜곡된 이해를 바로잡음으로써 21세기 기술시대가 요구하는 인간관, 세계관 그리고 가치론적 반성에 초점 맞춘다. 경계선에서 분출되는 변신(metramorphosis)의 욕망이 뒤틀릴 때 발생하는 사회적 모순의 근저에는 기술의 부재가 아니라 인문적 상상력의 결핍이 자리잡고 있다. 이러한 상황에서 융합기술시대를 살아가는 사람들의 기본 덕목인 “Why Question의 bottom line”까지 분석하는 능력을 환기시키는 것보다 더 중요한 인문적 논제는 없을 것이다.

◈Title : Biomanufacturing of functional nanomaterials for electrochemical and biomedical    application
◈ Speaker : Prof. Ki Tae Nam (Seoul National University)
◈ Date & Time : Friday, June 1 (2:00pm ~ 3:30pm)
◈ Place : LG Research Building, Room #101
◈ Host : Prof. Byung Sub Kim (Tel. 2382)
              BK21 Educational Institute of Future Information Technology
◈Abstract : Imagine a world where we could biomanufacture hybrid nanomaterials having atomic-scale resolution over functionality and architecture. Toward this vision, a fundamental challenge in materials science is how to design and synthesize protein-like material that can be fully self-assembled and exhibit information-specific process. In an ongoing effort to extend the fundamental understanding of protein structure to non-natural systems, we have designed a class of peptoid polymers to fold like proteins and assemble into defined nanostructures. We have identified specific sequences of non-biological peptoid polymer chains that crystallize into extremely thin sheets under physiological conditions. In this talk, I will talk about new strategies to drive the self-assembled structures utilizing the electrostatic interactions. I will also discuss about the specific interaction between proteins and inorganics that can be used for the development of new hybrid devices.

  
▣ Title : Natural Philosophy and Natural Science in the Perspective of A. N. Whitehead.

▣ Speaker : Prof. Chang Ok Moon, Prof. Young Hwan Oh (Yonsei University)

▣ Time : Friday, May 11, 2012 (2:00pm-3:30pm)

▣ Place : Room #101, LG Research Bldg.

▣ Hosted by : Prof. O’ Dae Kwon (Tel. 279-2212)  

▣ Title : Design Techniques for Dense Embedded Memory in Advanced CMOS Technologies

▣ Abstract : On-die cache memory is a key component in advanced processors since it can boost micro-architectural level performance at a moderate static power penalty. Demand for denser memories only going to increase as the number of cores in a microprocessor goes up with technology scaling. 6T SRAMs have been the embedded memory of choice for modern microprocessors due to their logic compatibility, high speed, and refresh-free operation. However, the relatively large cell size and ratioed operation make aggressive scaling of 6T SRAMs challenging in sub-22 nm. Recently, 1T1C embedded DRAMs (eDRAMs) have replaced SRAMs in several server applications reducing the footprint and improving performance. Difficulties in scaling the storage capacitor and the additional process steps involved in manufacturing the thick oxide (TOX) access devices are currently limiting the wide spread adoption of 1T1C technology.

In this talk, circuit techniques and simulation methodologies are presented to demonstrate the potential of alternative options of gain cell (2T/3T) eDRAMs and spin-torque-transfer magnetic RAMs (STT-MRAMs) for high density embedded memories. Three unique test chips of gain cell eDRAMs achieve overall faster system performances and lower static power dissipations than SRAMs in a generic 65 nm low-power (LP) CMOS process. Studies based on the proposed STT-MRAM simulation methodology show that in-plane STT-MRAMs will outperform SRAMs from 15 nm node, while its perpendicular counterpart requires further innovations in MTJ material properties in order to overcome the poor write performance from 22 nm node.