Seung‐Jin Lee

ORCID: 0009-0006-7609-9408
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About
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Research Areas
  • Photonic and Optical Devices
  • Advanced Photonic Communication Systems
  • Image Processing Techniques and Applications
  • Electrospun Nanofibers in Biomedical Applications
  • Optical Network Technologies
  • CCD and CMOS Imaging Sensors
  • Bone Tissue Engineering Materials
  • Advanced Memory and Neural Computing
  • Biosensors and Analytical Detection
  • Semiconductor materials and devices
  • Cooperative Communication and Network Coding
  • Membrane Separation and Gas Transport
  • Caching and Content Delivery
  • Advanced Computing and Algorithms
  • Advanced Image and Video Retrieval Techniques
  • Advanced Optical Network Technologies
  • Microwave Engineering and Waveguides
  • Tissue Engineering and Regenerative Medicine
  • Image and Signal Denoising Methods
  • Advanced Steganography and Watermarking Techniques
  • Catalysts for Methane Reforming
  • Brain Tumor Detection and Classification
  • Advancements in Semiconductor Devices and Circuit Design
  • Advanced Optical Imaging Technologies
  • Advanced Vision and Imaging

University of Washington
2024

Georgia Gwinnett College
2024

Gwinnett College
2024

Chung-Ang University
2000-2023

Samsung (South Korea)
2023

Ewha Womans University
1998-2017

Sejong University
2017

Small and Medium Business Administration
2015

Hanbat National University
2015

Daegu Catholic University Medical Center
2014

Background: Chitosan is known as a biodegradable and non‐toxic natural polymer that enhances wound healing bone formation. The aims of this study are to evaluate the biocompatibility chitosan nanofiber membranes examine effect on regeneration in rabbit calvarial defects. Methods: In vitro cell proliferation tests using human osteosarcoma line MG63 reverse transcription‐polymerase chain reaction (RT‐PCR) expression alkaline phosphatase (ALP), collagen, osteocalcin (OCN), GAPDH were done...

10.1902/jop.2005.76.10.1778 article EN Journal of Periodontology 2005-10-01

A heterogeneous many-core object recognition processor is proposed to realize robust and efficient on real-time video of cluttered scenes. Unlike previous approaches that simply aimed for high GOPS/W, we aim achieve Effective or EGOPS/W, which only counts operations carried out meaningful regions an input image. This achieved by the Unified Visual Attention Model (UVAM) confines complex Scale Invariant Feature Transform (SIFT) feature extraction while rejecting meaningless background...

10.1109/jssc.2010.2075430 article EN IEEE Journal of Solid-State Circuits 2010-10-19

Cell sheet transplantation is a key tissue engineering technology. A vascular endothelial growth factor (VEGF)-releasing fiber mat developed for the of multilayered cardiomyocyte sheets. Poly(vinyl alcohol) mats bearing poly(lactic-co-glycolic acid) nanoparticles that incorporate VEGF are fabricated using electrospinning and electrospray methods. Six-layered sheets transplanted with VEGF-releasing into athymic rats. After two weeks, these produce thicker layers compared controls lacking mat,...

10.1002/mabi.201700073 article EN cc-by-nc Macromolecular Bioscience 2017-05-26

Abstract Collagen/chitosan composite microgranules were fabricated as bone substitutes for the purpose of obtaining high bone‐forming efficacy. The have flexibility to fill various types defect sites with closer packing. interconnected pores formed spaces between microgranules, which allowed new ingrowth and vascularization. In addition, transforming growth factor‐beta 1 (TGF‐β1) was incorporated into in order improve bone‐healing collagen/chitosan by dropping a mixed solution NaOH/ethanol...

10.1002/jbm.a.30434 article EN Journal of Biomedical Materials Research Part A 2005-12-05

This paper describes real chip implementation issues of network-on-chip (NoC) and their solutions along with series design examples. The described in this cover both architectural aspects circuit level techniques for practical NoC. As architecture solutions, topology selection, chip-aware protocol design, on-chip serialization (OCS) link area reduction are explained. For techniques, SERDES synchronizer crossbar switch partial activation, low-voltage presented as the foundations power...

10.1109/nocs.2007.40 article EN 2007-05-01

As the number of elderly drivers rapidly increases worldwide, interest in dangers driving is growing as accidents rise. The purpose this study was to conduct a statistical analysis risk factors drivers. In analysis, data from government organization’s open were used for secondary processing 10,097 people. Of 9990 respondents, 2168 current drivers, 1552 past but not presently, and 6270 did have driver’s license; participants divided into groups accordingly. who had better subjective health...

10.3390/healthcare11040563 article EN Healthcare 2023-02-14

For mobile intelligent robot applications, an 81.6 GOPS object recognition processor is implemented. Based on analysis of the target application, chip architecture and hardware features are decided. The proposed aims to support both task-level data-level parallelism. Ten processing elements integrated for parallelism single instruction multiple data (SIMD) added exploit memory-centric network-on-chip (NoC) efficient pipelined task execution using ten elements. It also provides coherence...

10.1109/tvlsi.2008.2011226 article EN IEEE Transactions on Very Large Scale Integration (VLSI) Systems 2009-02-09

Abstract Although surface-enhanced Raman spectroscopy (SERS) is a powerful analytical technique with unbeaten sensitivity, the capabilities of SERS have been not fully utilized in screening applications because throughput spectrum detection by conventional instruments has restricted due to their single-point measurement manners. Hence, this paper presents development high system that employs fiber-optic switch and probe array. In system, 785 nm excitation light directed into 1 × 8 broadband...

10.1007/s13206-023-00113-3 article EN cc-by BioChip Journal 2023-07-04

Calcium removal from water can be accomplished by zeolite adsorption combined with gravity-driven membrane filtration. Zeolite size and Si/Al ratio significantly affect calcium filterability.

10.1039/d4ew00438h article EN Environmental Science Water Research & Technology 2024-01-01

This paper proposes a sensor data compression mechanism based on the amount of change input and power management scheme for various sensors used motion recognition application. The experimental results confirmed that proposed reduced wakeup count hub core transmitted to by about 78% compared conventional buffering structure, consumption IMU (inertial measurement unit) is 56%.

10.1587/elex.14.20170974 article EN IEICE Electronics Express 2017-01-01

Cost-effective handheld graphics processing units are discussed in the aspects of performance, memory bandwidth, power, and area requirements. The proposed RamP architecture has special features cost-effective low-power arithmetic units, bandwidth reduction, dynamic power management schemes for GPUs. detailed design RamP- VI is explained as an example architecture. It adopts logarithmic efficiency, a triple- domain scheme to minimize consumption at given performance level. GPU shows peak 141...

10.1109/mcom.2008.4481355 article EN IEEE Communications Magazine 2008-04-01

Ubiquitous technology through sensor networks is being applied to numerous industrial fields specially increase the quality of human life (QoL). Therefore, Wireless Sensor Networks (WSNs) lossless data one communications challenges provide accurate data. Although, end-to-end retransmission has evolved as a reliable transportation in Internet, this method not applicable WSNs due lack reliability wireless link and resource constraints nodes. In our previous paper, we proposed transfer using...

10.1109/apscc.2010.88 article EN 2010-12-01

This paper presents a 211 GOPS/W real-time object recognition processor with network-on-chip (NoC). The chip integrates 8 linearly connected SIMD clusters 4-way VLIW processing elements (PEs) per cluster. SIMD/MIMD dual-mode exploits both data-level and object-level parallelism based on the NoC configuration. 8-way PE cluster is optimized for data-intensive tasks. Packet-based power management scheme employed low consumption. proposed takes 36mm <sup...

10.1109/esscirc.2008.4681892 article EN 2008-09-01

Abstract Machine vision in quality control and sorting applications enhance organizational efficiency. systems are coupled with a pre-trained Convolutional Neural Network (CNN) to the capability of system for classification identification tasks. The overarching research goal this study is a) understand how CNN decides on classifying threaded fasteners, b) well does CNN’s decision making compare that human. In order answer first question, an image-based fastener model augmented was deployed....

10.1115/imece2024-146133 article EN 2024-11-17

Proposed scalable WDM based Ethernet PON aims to overcome small link capacity and ineffective utilization of PONs by optimally combining TDM solutions while guaranteeing high port-share flexibility required for evolutionary network.

10.1109/ofc.2007.4348472 article EN 2007-03-01

A PRAM includes 8 b embedded RISC to generate the optimized internal timing and voltage parameters control variations of cell resistances. The blocks with small margin window resistances are detected, analyzed controlled by processor-based built-in self-optimizer (BISO). 4 Mb test is fabricated in a 90 nm 3-metal diode-switch technology. Measured increases up 221%.

10.1109/vlsic.2007.4342707 article EN 2007-06-01

Tetanus has high lethality and can cause serious complication, so it is very important to have a quick exact checkup treatment.In this study, we conducted study about clinical characteristics types of tetanus patients in Daegu Emergency Medical Center studied possibility Tetanos Quick Stick (TQS) as selective check up treat tentanus by comparing the results local kit measured from stick developed antibody titer ELISA (Enzyme-Linked Immunosorbent Assay).The result showed that happens more...

10.15324/kjcls.2014.46.1.12 article EN cc-by-nc Korean Journal of Clinical Laboratory Science 2014-03-31

현재까지 축적된 많은 연구결과와 설계기준을 바탕으로 일반적인 중실단면을 갖는 철근콘크리트 교각의 경우 큰 어려움 없이 내진설계가 수행되고 있지만, 중공원형 철근 콘크리트 실험 및 해석상의 어려움으로 인하여 국내 외적으로 심부구속철근 상세에 대한 명확한 설계기준과 함께 이에 합리적인 구속 모델 내진 성능평가 방안 등은 아직까지 미비한 실정이다. 본 연구에서는 주요 설계변수에 따른 내진거동 특성을 파악하고, 이를 신뢰성 있는 비선형 유한요소해석 프로그램(RCAHEST)을 통한 결과와의 비교 분석을 보다 경제적이고 설계방안 마련을 위한 기초자료를 제시하고자 한다. The seismic design of solid reinforced concrete bridge columns has been committed to, based on accumulated research and specifications. rational confinement model performance...

10.5000/eesk.2011.15.2.035 article EN Journal of the Earthquake Engineering Society of Korea 2011-04-30

The flip-chip solder joint has become one of the most important technologies high-density packaging in microelectronics industry. But, electromigration a critical reliability issue technology. Because dimensions joints are expected to decrease and current density is increase. This study about joints, we evaluated many kinds balls such as SnAgCu, SnCu so on flip chip package. lifetime against was defined fail from value resistance with electric reaches 1.5 times that initial for. In bumps...

10.4071/isom-2011-tha3-paper4 article EN IMAPSource Proceedings 2011-01-01
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