A5101409836- Fuel Cells and Related Materials
- Low-power high-performance VLSI design
- Advanced Battery Technologies Research
- Advanced Battery Materials and Technologies
- Earthquake and Tsunami Effects
- Fluid Dynamics Simulations and Interactions
- Conducting polymers and applications
- VLSI and Analog Circuit Testing
- Parallel Computing and Optimization Techniques
- Membrane-based Ion Separation Techniques
- Embedded Systems Design Techniques
- Geotechnical Engineering and Underground Structures
- Radiation Effects in Electronics
- Advancements in PLL and VCO Technologies
- Semiconductor materials and devices
- Advancements in Solid Oxide Fuel Cells
- Supercapacitor Materials and Fabrication
- Structural Analysis and Optimization
- Chemical Synthesis and Characterization
- MXene and MAX Phase Materials
- Wave and Wind Energy Systems
- Vibration and Dynamic Analysis
- Advancements in Battery Materials
- Dam Engineering and Safety
- Interconnection Networks and Systems
Chungnam National University Hospital
2024-2025
SK Group (South Korea)
2021-2024
Korea Institute of Civil Engineering and Building Technology
2002-2023
IEEE Computer Society
2013
The University of Texas at Austin
2011-2013
Korea Automotive Technology Institute
2012
Sogang University
2002-2007
Samsung (South Korea)
2005
Korea Center for Disease Control and Prevention
2004
Korea Disease Control and Prevention Agency
2004
Importance Longitudinal changes in functional levels can provide valuable information about disability. However, longitudinal outcomes aneurysmal subarachnoid hemorrhage (aSAH) have not been well reported, which could insight into appropriate management and for patients experiencing Objective To investigate the 5-year prognosis of with aSAH. Design, Setting, Participants This retrospective cohort study used data aSAH from Korean Stroke Cohort Functioning Rehabilitation up to 5 years after...
Sudden variations in current (large di/dt) can lead to significant power supply voltage droops and timing errors modern microprocessors. Several papers discuss the complexity involved with developing test programs, also known as stress marks, system. Authors of these produced tools methodologies generate marks automatically using techniques such integer linear programming or genetic algorithms. However, nearly all previous work took place context single-core systems, results were collected...
Background There are relatively few reports on the long-term sequential functional recovery and prognosis in patients with cerebellar infarction. The aim of this study was to investigate multifaceted outcomes up 36 months after onset isolated Methods This a retrospective analysis Korean Stroke Cohort for Functioning Rehabilitation (KOSCO) data onset. Isolated infarction defined as presence lesions cerebellum without other brain parenchyma. We assessed domains, including motor (Fugl-Meyer...
To prepare miscible polyethylene glycol diacrylate/polyvinylidene fluoride (PEGDA/PVdF) blend gel polymer electrolytes, low molecular weight liquid PEGDA oligomer was mixed with PVdF-HFP dissolved in ethylene carbonate/dimethyl carbonate/ and then cured under ultraviolet irradiation. Room temperature conductivity of PEGDA/PVdF films found to be comparable that they were electrochemically stable up 4.6 V vs. Scanning electron micrographs revealed electrolytes have pore size intermediate...
In this paper, we propose a method for automated di/dt stressmark generation to test maximum voltage droop in microprocessor power delivery network. The is an instruction sequence which draws periodic high and low current pulses that maximize fluctuations including droops. order automate generation, devise code generator with the ability control sequencing, register assignments, dependencies. Our framework uses Genetic Algorithm scheduling optimizing candidate sequences create droop. results...
In this paper, we propose a method for automated di/dt stressmark generation to test maximum voltage droop in microprocessor power delivery network. The is an instruction sequence which draws periodic high and low current pulses that maximize fluctuations including droops. order automate generation, devise code generator with the ability control sequencing, register assignments, dependencies. Our framework uses Genetic Algorithm scheduling optimizing candidate sequences create droop. results...
Nafion membrane was cast from 5 wt % Nafion/dimethly acetamide/2-propanol solution containing a hydrophobic plasticizer, and the phase-separated low molecular weight component leached out matrix by solvent extraction using diethyl ether methanol. The resultant porous doped in situ with zirconium hydrogen phosphate (ZHP) chloride phosphoric acid treatment. maximum loading of ZHP nanoparticles increased to 40 because additional precipitation pore structure. Field-emission scanning electron...
The demand for high-performance graphics systems used artificial intelligence continues to grow; this trend requires achieve ever higher bandwidths. Enabling GDDR6 DRAM data rates beyond 18Gb/s/pin [1] identifying and solving factors that affect the speed of a memory interface. Prior studies have showed interface is vulnerable from signal integrity (SI) power (PI) perspective, since it based on parallel using single-ended signaling. Furthermore, circuit schemes mitigate process, voltage,...
The flexion synergy and extension are a representative consequence of stroke appear in the upper extremity lower extremity. Since ipsilesional corticospinal tract (CST) is most influential neural pathway for both extremities motor execution, damage by to this could lead similar pathological features (e.g., abnormal synergies) extremities. However, less attention has been paid interlimb correlations across different recovery phases stroke. We used results Fugl-Meyer assessment (FMA)...
The demand for high-performance graphics systems used artificial intelligence, cloud game, and virtual reality continues to grow; this trend requires achieve ever higher bandwidths. This article proposes a GDDR6 dynamic random access memory (DRAM) with half-rate clocking architecture optimized receiver transmitter improve high-speed operation. Furthermore, adopts staggered PAD using the redistribution layer (RDL) reduce distance four PADs; it enables mitigation of bandwidth limitation...
Voltage droops resulting from inductive noise are common in state-of-the-art processors. Many of the techniques used to reduce energy consumption - clock gating, power process shrinks, and voltage reduction lead increased or sensitivity variations. Designers use guardbands minimize errors due fluctuations noise; however, this leads lower performance because frequency points set deal with a worst-case benchmark stressmark. Although most applications do not approach droop caused by stressmark,...
Nafion/organo-clay nanocomposite membranes were prepared by solution intercalation technique in order to reduce methanol permeability while maintaining essential proton conductivity. Featureless XRD patterns of indicated that organically treated clay particles completely disordered and exfoliated continuous Nafion matrix at loading less than 10 wt%. TEMicrographs also revealed nanolayers are well delaminated matrix. In addition, thermal degradation glass transition temperature slightly...
Voltage droops resulting from inductive noise are common in state-of-the-art processors. Many of the techniques used to reduce energy consumption - clock gating, power process shrinks, and voltage reduction lead increased or sensitivity variations. Designers use guardbands minimize errors due fluctuations noise; however, this leads lower performance because frequency points set deal with a worst-case benchmark stressmark. Although most applications do not approach droop caused by stressmark,...
The organically treated montmorillonite (MMT) clays incorporated into the Nafion matrix by means of solution intercalation using dimethylacetamide (DMA) as a solvent have been tested. diffraction patterns nanocomposite Nafion/MMT membranes indicated disordered and exfoliated structure. transmission electron microscopy images revealed that clay layers are well nanodispersed in until weight fraction MMT reaches . apparent improvement thermal stability might result from strong interaction...
본 연구에서는 상치콘크리트가 설치되어 있고, 주피복재로 테트라포드(Tetrapod)가 거치된 제두부 구간에 대하여 피복재 안정중량 재분석 및 피복중량의 할증 범위에 대해 검토하였다. 결과 분석을 위하여 3차원 수리실험을 수행하였다. 수리실험 결과에 의하면 항만 어항설계기준 · 해설(MOF, 2014), 미국의 CEM(USACE, 2005) 등에 제시된 구간에서의 중량은 적정한 것으로 검토되었다. 테트라포드가 경사식구조물 구간 피복재의 할증중량 피복범위는 기준선을 중심으로 설계파고의 약 5배 범위를 항내측과 항외측에 피복하는 것이 핵심용어: 경사식 구조물, 안정성, 제두부, 테트라포드,
A transaction level modeling (TLM) approach is used to meet the simulation speed as well cycle accuracy for large scale SoC performance analysis. We implemented transaction-level model of a proprietary bus called AHB+ which supports an extended AMBA2.0 protocol. The shown be 353 times faster than pin-accurate RTL model, while maintaining 97% on average. also present TLM development procedure architecture.
일반적으로 유공벽을 갖는 케이슨(유공케이슨)은 직립식 구조물 벽면에 유공부를 설치하여 반사파의 저감, 월파량의 저감 등의 목적으로 사용된다. 본 연구에서는 유공케이슨 유수실을 골재(사석)로 채운 형태의 구조물에 대한 수리특성(반사계수)을 수리모형실험을 통해 검토하였다. 사석으로 경우가 유수실이 비어있는 일반적인 형상보다는 반사계수가 크게 나타났으나, 속채움재를 유수실에 중량을 확보함으로서 구조물의 안정성을 확보하고, 일정 수준에서 수리특성을 만족할 수 있는 것으로 검토되었다. 핵심용어: 유공케이슨, 유수실, 수리실험, 반사계수, 직립구조물
The increase in GPU-based AI applications, cloud-based gaming, and video streaming services has driven the need for new a graphics memory that operates at higher bandwidth power efficiency than existing GDDR6 SDRAM, leading to introduction of GDDR7 standard [1]. Since performance degradation due thermal throttling, cost, device reliability are major development considerations high-power PAM3 signaling is applied on single-ended pins improve consumption, while maintaining clock frequency [2]....