A5100720475- Advanced MIMO Systems Optimization
- Endodontics and Root Canal Treatments
- Opportunistic and Delay-Tolerant Networks
- Vehicular Ad Hoc Networks (VANETs)
- Mobile Ad Hoc Networks
- Heat Transfer and Boiling Studies
- Fluid Dynamics and Heat Transfer
- Fluid Dynamics and Thin Films
- Dental Radiography and Imaging
- Fluid Dynamics and Mixing
- Cooperative Communication and Network Coding
- Dental Trauma and Treatments
- Advanced Wireless Communication Technologies
- Conducting polymers and applications
- Advanced Photocatalysis Techniques
- Millimeter-Wave Propagation and Modeling
- TiO2 Photocatalysis and Solar Cells
- Surface Modification and Superhydrophobicity
- Laser-Ablation Synthesis of Nanoparticles
- Nanomaterials and Printing Technologies
- Cavitation Phenomena in Pumps
- High-Voltage Power Transmission Systems
- Advanced Sensor and Energy Harvesting Materials
- Freezing and Crystallization Processes
- Supercapacitor Materials and Fabrication
Yonsei University
2010-2025
Inha University
2022
Konkuk University
2009
University of Delaware
2008
This paper presents novel ultrareliable and low-latency communication (URLLC) techniques for URLLC services, such as Tactile Internet services. Among typical use-cases of services are tele-operation, immersive virtual reality, cooperative automated driving, so on. In new kinds traffic haptic information including kinesthetic tactile need to be delivered in addition high-quality video audio traditional multimedia Further, a variety has various characteristics terms packet sizes data rates...
In competitive sports, human performance makes the difference between who wins and loses. some video games (esports), response time is an essential factor of performance. When athlete's equipment (computer, input output device) responds with lower latency, it provides a measurable advantage. this study, we isolate latency refresh rate by artificially increasing when operating at high rates. Eight skilled esports athletes then perform gaming-inspired first person targeting tasks under varying...
Poor interfacial contact is often encountered in nanoparticulate film-based devices. The dye-sensitized solar cell (DSSC) a representative case which nanoporous TiO2 electrode needs to be prepared on the transparent conducting oxide (TCO)-coated glass substrate. In this study, we demonstrate that inter-electrode resistance accounts for considerable portion of total DSSC and its efficiency can greatly enhanced by welding interface with laser. films formed TCO-coated substrate were irradiated...
Thylakoid membranes (TMs) isolated from plant cells produce high-energy electrons by splitting water molecules using solar energy during photosynthesis. Since those photosynthetic (PEs) can be harvested oxidizing TMs, various approaches to attach TMs on electrodes have been investigated so far. Here, we propose embedding of in the electrically conductive polymeric structure 3D printing. A and ink based a mixture poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) was developed...
Engineering, Procurement, and Construction (EPC) projects span the entire cycle of industrial plants, from bidding to engineering, construction, start-up operation maintenance. Most EPC contractors do not have systematic decision-making tools when for project; therefore, they rely on manual analysis experience in evaluating contract documents, including technical specifications. Oftentimes, miss or underestimate presence risk clauses severity, potentially create with a low bid price tight...
It is necessary to study the frequency characteristics in upper-mid band, one of new candidates 6G, and extreme massive MIMO scheme using it. Research on a fully digital precoding method has drawn much attention achieve near optimal performance with low complexity by exploiting channel characteristics. In desired utilize appropriate schemes suitable for bands provide not only peak data rate up 1 Tbps but also user experienced Gbps anywhere anytime, However band at mobile communication...
The purpose of this study was to determine the effect post types and sizes on fracture resistance in immature tooth model with various restorative techniques. Bovine incisors were sectioned 8 mm above 12 below cementoenamel junction simulate model. To compare postand-core restorations, canals restored gutta-percha resin core, or reinforced dentin wall dual-cured composite, followed by placement D.T. LIGHT-POST, ParaPost XT, EverStick Post individually. All specimens stored distilled water...
In millimeter wave (mmWave) systems, analog beam steering (i.e., direction of arrival (DOA) estimation) is an essential operation for subsequent channel estimations. this paper, we propose a framework incorporating monopulse ratio (MR) concept, originally developed radar into orthogonal frequency division multiplexing (OFDM) mmWave systems with cyclic prefix (CP) DOA estimation. It shown that CP can be used estimation in general OFDM by employing the MR concept. Based on performance analysis...
This study introduces a metric designed to measure urban structures through the economic complexity lens, building on foundational theories of spatial structure, Central Place Theory (CPT) (Christaller, 1933). Despite significant contribution in field studies and geography, CPT has limited suggesting an index that captures its key ideas. By analyzing various big data Seoul, we demonstrate PCI ECI effectively identify ideas CPT, capturing structure city associated with distribution...
In this paper, user detection performance of a grant-free uplink transmission in large scale antenna system is analyzed, which general multiple access considered as the model and Zadoff-Chu sequence used for pilot. The false alarm probabilities various schemes under target are evaluated.
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공인인증서의 원리 기술인 공개키 기반 구조는 인터넷 환경에서 본인확인, 부인 방지, 문서의 위변조 방지 등의 기능을 제공하는 보안기술이다. 국내 정부기관 및 금융기관들은 서비스의 보안 사고 방지를 위해 ActiveX를 이용한 PKI인증시스템을 사용하고 있다. 그러나 ActiveX와 같은 플러그인 기술은 보안에 취약할 뿐만 아니라 특정 브라우저에서만 사용가능하기 때문에 사용자에게 불편함을 초래한다. 이러한 문제점을 해결하기 웹 표준(HTML5) 기반의 인증 기술 연구가 활발하게 진행되고 최근 국내은행에서 최초로 표준 PKI인증 기술을 도입하였다. 하지만 채택된 방법은 스토리지의 동일 출처 정책으로 인해 각 사이트마다 인증서를 등록해야 하는 불편함이 본 논문에서는 정책의 단점을 해결하면서 표준을 준수하는 인증서 통합 프로토콜을 제안하고 안전성을 증명한다. Public key infrastructure(PKI), principle technology of the...