Sequencing Capacity Expansion Projects

Shin, Youngsoo 연세대학교 산업경영연구소 1977 산업과경영 Vol.4 No.1

Design for experience innovation: understanding user experience in new product development

Shin, Youngsoo,Im, Chaerin,Oh, Hyosun,Kim, Jinwoo Taylor Francis 2017 Behaviour & information technology Vol.36 No.12

Semicustom Design of Zigzag Power-Gated Circuits in Standard Cell Elements

Youngsoo Shin,Seungwhun Paik,Hyung-Ock Kim IEEE 2009 IEEE transactions on computer-aided design of inte Vol.28 No.3

<P>Zigzag power gating (ZPG) can overcome the long wake-up delay of standard power gating, but its requirement for both nMOS and pMOS current switches, in a zigzag pattern, requires complicated power networks, limiting application to custom designs. We propose a design framework for cell-based semicustom design of ZPG circuits, using a new power network architecture that allows the unmodified conventional logic cells to be combined with custom circuitry such as ZPG flip-flops, input forcing circuits, and current switches. The design flow, from register transfer level description to layout, is described and applied to a 32-b microprocessor design using a 1.2-V 65-nm triple-well bulk CMOS process. The use of a sleep vector in ZPG requires additional switching power when entering standby mode and returning to active mode. The switching power should be minimized so that is does not outweigh the leakage saved by employing ZPG scheme. We formulate the selection of a sleep vector as a multiobjective optimization problem, minimizing both the transition energy and the total wirelength of a design. We solve the problem by employing multiobjective genetic-based algorithm. Experimental results show an average saving of 39% in transition energy and 8% in total wirelength for several benchmark circuits in 65-nm technology.</P>

HAPL: Heterogeneous Array of Programmable Logic Using Selective Mask Patterning

Youngsoo Shin,Insup Shin,Donkyu Baek,Duckhwan Kim,Seungwhun Paik IEEE 2014 IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS PART 1 R Vol.61 No.1

<P>A structured ASIC, one kind of programmable logic device (PLD), consists of a homogeneous array of programmable logic elements, or called tiles. The architecture of each tile is supposed to be very general so that any kind of logic can be implemented on it; this is the main reason why a structured ASIC has an inherently limited performance, together with a large area requirement compared to an ASIC. This balances the little mask cost of structured ASIC. We tilt this balance by introducing a small number of different types of tile, each with its own architecture, which can be deployed across different designs by the use of a simple blocking mask. This is made possible by a new photolithography concept called selectively patterned masks (SPM), which we propose. We address the practical issues of SPM, including mask cost and manufacturing time. We introduce the heterogeneous array of programmable logic (HAPL), which is a new structured ASIC which takes advantage of SPM. HAPL has its own tile and routing architectures, and supporting CAD tools for packing and routing. Extensive experiments in 45-nm technology are used to assess HAPL and compare it with ASIC. A HAPL design that is optimized for area is about twice the size of its ASIC counterpart. A delay-optimized HAPL design exhibits a post-layout delay which is, on average, 1.35 that of an equivalent ASIC.</P>

Data-centered persuasion: Nudging user's prosocial behavior and designing social innovation

Shin, Youngsoo,Kim, Jinwoo Elsevier 2018 Computers in Human Behavior Vol.80 No.-

<P><B>Abstract</B></P> <P>By employing individuals' behavioral data collected from routinely used devices, a more effective ‘nudging’ toward changes in individuals' attitudes and behavior can be implemented. To examine the persuasive effect on inducing prosocial behaviors, two types of system concepts were designed, namely shared value systems. We manipulated the usage context of these systems and tested the effects with two independent variables: the status of the system agent and the valence of the agent's feedback. As a result, this study revealed that users' satisfaction and intention for prosocial behavior increased after they experienced the shared value system based on the concept of self-preferential value. Interaction effects were also found between the status of the system agent and the valence of the agent's feedback.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A data-centered model of persuasion for behavior changes is discussed. </LI> <LI> The persuasive effect of employing users' behavior data in the systems is examined. </LI> <LI> Users prefer performing prosocial activities without the burden of self-sacrifice. </LI> <LI> The tailored role of system agents increases users' satisfaction and prosociality. </LI> <LI> Creating shared value systems to induce users' prosocial behavior is suggested. </LI> </UL> </P>

이질적 시스템 설계를 위한 소프트웨어 합성

신영수(Youngsoo Shin),최기영(Kiyoung Choi) 대한전자공학회 1996 대한전자공학회 학술대회 Vol.1996 No.5

내장형 시스템 설계 환경에서의 스레드에 기초한 소프트웨어 합성

신영수(Youngsoo Shin),최기영(Kiyoung Choi) 대한전자공학회 1995 대한전자공학회 학술대회 Vol.1995 No.12

응급의료체계에서의 ‘골든 타임’ 확보를 위한 인지과학적 제언

신영수(Youngsoo Shin),오효선(Hyosun Oh),이선화(Sunhwa Lee),임채린(Chaerin Im),김진우(Jinwoo Kim) 한국HCI학회 2014 한국HCI학회 학술대회 Vol.2014 No.12

최근 들어, 대형 사고 발생시, 사고 자체에 대한 예방뿐만 아니라, 예기치 못한 사고에 따른 사후 수습과정에서의 효율적인 대처의 중요성 또한 사회적으로 강조되기 시작하고 있다. 이에 따라, 국가 안전 보장과 관련한 정부차원에서의 접근뿐만 아니라, 사고 발생에 따른 응급의료체계의 효율적 운영을 위해, 개선 방안들에 대한 끊임없는 논의가 진행되고 있는 상황이다. 본 연구에서는 이러한 시대적 흐름을 반영하여, 인지과학적 측면에서도 응급의료체계의 개선에 일조할 수 있는 학제적이고 실용적인 제언들을 모색해보고자 하였다. 보다 구체적으로는 사전 대처, 사후 수습 과정에서의 응급 환자의 생존과 직결될 수 있는 ‘골든 타임’의 확보 방안에 대해 고찰해 보았다. 이를 위해 정성적인 연구방법을 활용하여, 문제의 분석 및 해결 방안들에 대한 근거들을 도출할 수 있었다. 또한 연구의 결과로 도출된 여러 통찰들을 바탕으로, 인지 과학적인 관점에서의 실질적으로 적용 가능한 개선 방안들을 제안해 보고자 하였다. These days, coping with an accident has been emphasized as well as accident prevention in big accidents like natural disasters or man-made disasters. For this reason, not only government, but also the general public including political parties, universities, and other societal institutions are making a concentrated effort to reorganize an Emergency Medical Services System (EMSS). Along with from the movement, this study also was motivated to find some effective suggestions for an improvement of EMSS. Especially, this study focused on securing ‘Golden Time’ which is related to a chance of emergency patient’s survival. Since there are some obstacles in securing the ‘Golden Time’, we carried out an exploratory study with qualitative research methods to find insights for this issue. Furthermore, we aimed to consider from individual level of behavior change like a concept of affordance and persuasive technology to a social movement like a concept of social innovation. As a result, we identified practical suggestions for Golden Time in EMSS based on cognitive science.

One-Cycle Correction of Timing Errors in Pipelines With Standard Clocked Elements

Insup Shin,Jae-Joon Kim,Yu-Shiang Lin,Youngsoo Shin IEEE 2016 IEEE transactions on very large scale integration Vol.24 No.2

<P>One of the most aggressive uses of dynamic voltage scaling is timing speculation, which in turn requires fast correction of timing errors. The fastest existing error correction technique imposes a one-cycle time penalty only, but it is restricted to two-phase transparent latch-based pipelines. We perform one-cycle error correction by gating only the main latch in each stage of the pipeline that precedes a failed stage. This new method is applicable to widely used clocking elements, such as flip-flops and pulsed latches. Because it prevents inputs arriving at a stage, which is stalled, it can also be used in pipelines with multiple fan-in, fan-out, and looping. Simulations show an energy saving of 8%-12% with a target throughput of 0.9 instructions per cycle, and 15%-18% when the target is 0.8.</P>

A Study on the Discovery of IL-31 Receptor A in Astrocytes and Effect of Diospyros lotus Extract on IL-31-Mediated Pruritus in Microglia and Astrocytes

Jaeyoung Shin,Jihyeon Park,Byoungok Cho,Feng Wang,Suping Hao,Dajeong Shin,Youngsoo Kim,Seonil Jang 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10

Interleukin-31 is associated with hypersensitivity disorders such as atopic dermatitis, allergic rhinitis and asthma. IL-31 is also known to be one of the major "drivers" of pruritus. In the nervous system, pruritus may be enhanced through IL-31-related interactions. However, there were no reports of IL-31 receptor expression in astrocytes. In this study, the expression of IL-31 receptor in astrocytes and the effect of Diospyros lotus extract (DLE) on pruritus factors between microglia and astrocytes were investigated. As a result, the expression of IL-31 receptor A in astrocytes was discovered for the first time. Pretreatment with DLE suppressed the expression of IL-31 receptor A in IL-31-treated astrocytes. On the other hand, pretreatment of DLE in microglia inhibits lipopolysaccharide (LPS) plus interferon gamma (IFN-γ)-induced IL-31 production. DLE inhibited phosphorylation of MAPK, STAT1 and NF-κB in LPS plus IFN-γ stimulated microglia. Taken together, DLE down-regulated IL-31-mediated pruritus factors in both astrocytes and microglia. Therefore, the results of this study suggest the potential of DLE as a material that can relieve chronic itch conditions.