A5100698505- Phase Equilibria and Thermodynamics
- Thermodynamic properties of mixtures
- Education and Learning Interventions
- Analog and Mixed-Signal Circuit Design
- Chemical Thermodynamics and Molecular Structure
- Educational Research and Pedagogy
- Educational Systems and Policies
- Material Dynamics and Properties
- Advanced DC-DC Converters
- Low-power high-performance VLSI design
- Advancements in Semiconductor Devices and Circuit Design
- Advanced Thermodynamics and Statistical Mechanics
- Radio Frequency Integrated Circuit Design
- Biosensors and Analytical Detection
- Fluid Dynamics and Turbulent Flows
- Engineering Structural Analysis Methods
- Advanced Optical Network Technologies
- IPv6, Mobility, Handover, Networks, Security
- Advanced biosensing and bioanalysis techniques
- Engineering Applied Research
- Mobile Agent-Based Network Management
- Digital Filter Design and Implementation
- Advanced Battery Technologies Research
- Robotic Locomotion and Control
- Image and Video Stabilization
Korea Advanced Institute of Science and Technology
1997-2024
Samsung (South Korea)
2016-2024
University of California, Riverside
2022
Albany State University
2021-2022
Korea Institute of Nuclear Safety
2022
Korea Institute of Radiological and Medical Sciences
2021
Pohang University of Science and Technology
2020
Seoul National University
2006-2015
Konkuk University Medical Center
2014
Konkuk University
2012
This paper proposes a coarse-fine dual-loop architecture for the digital low drop-out (LDO) regulators with fast transient response and more than 200-mA load capacity. In proposed scheme, output voltage is coregulated by two loops, namely, coarse loop fine loop. The adopts current-mirror flash analog to converter supplies high current enhance performance, while delivers helps reduce ripples improve regulation accuracies. Besides, controller implemented prevent contentions between loops....
A design-oriented analysis (DOA) method is presented, which lends sufficient insights into various Miller compensation schemes. The predicts the nondominant poles of Miller-compensated amplifiers in an intuitive manner, and it serves as a good supplement to conventional analysis. usage DOA verified by design examples given this paper. Guided DOA, multistage amplifier capable driving large-capacitive load ($C_{L}$ ) with low power consumption presented. This employs active zero extend its...
Conventionally, magnetism arises from the strong exchange interaction among magnetic moments of d- or f-shell electrons. It can also emerge in perfect lattices nonmagnetic elements, such as that exemplified by Stoner criterion. Here we report tunable suspended rhombohedral-stacked few-layer graphene (r-FLG) devices with flat bands. At small doping levels (n ∼ 1011 cm-2), observe prominent conductance hysteresis and giant magnetoconductance exceeds 1000% a function fields. Both phenomena are...
The Internet Engineering Task Force has developed Mobile IP to handle the mobility of hosts at network layer. IP, however, suffers from a number drawbacks such as high handover latency, packet loss, and conflict with security solutions. We describe evaluate performance SIGMA (seamless diversity based generalized architecture). utilizes achieve seamless mobile host, is designed solve many IP. Various aspects IPv6 enhancements have been compared. Criteria for evaluation include throughput,...
In this paper, the electric charger with single phase PWM converter and a bidirectional half-bridge is proposed. A transformer leakage inductance used for making resonance at resonant converter, which can make switched current to be sinusoidal without extra inductive component. Both operating principle design guideline are described in detail. The feasibility proposed verified through hardware implementation experimental results. Detailed results have been obtained show several advantages...
A modern mobile application processor (AP) requires a variety of power voltage levels, which increases the number external capacitors around AP. This is because supply PCB routes from management IC (PMIC) to AP have parasitic inductors. The inductors introduce ripples on lines. Therefore, are required between PMIC and To reduce capacitors, one level converted into levels inside both reduces as well pins simplifies routes. For such reasons, integrated low-dropout regulators (LDOs) preferred in APs.
This paper presents the technical approaches including system architecture and controllers that have been used by Team SNU at DARPA Robotics Challenge (DRC) Finals 2015. The platform THORMANG we is a modular humanoid robot developed ROBOTIS. On top of this platform, iris camera module end effector with passive palm in order to increase success rate tasks DRC Finals. Also, software operate intuitively, spite degraded communication. interface enables operator select sensor data be communicated...
Pharmaceutical products contaminated with Burkholderia cepacia complex (BCC) strains constitute a serious health issue for susceptible individuals. New detection methods to distinguish DNA from viable cells are required ensure pharmaceutical product quality and safety. In this study, we have assessed droplet digital PCR (ddPCR) variant propidium monoazide (PMAxx) selective of live/dead BCC in autoclaved nuclease-free water after 365 days, 0.001% chlorhexidine gluconate (CHX), 0.005%...
This article presents a fully integrated multi-phase (MP) buck converter for on-chip power management units. A peak-and-valley differential sensing (PVDS) scheme based on flying capacitor is proposed to evenly balance the multiple inductor currents without significant overhead even under mismatches in inductances, parasitic series resistances, and control-signal skews among phases. In addition, dynamic re-allocation of capacitors enables an more optimal frequency response output ripple...
ABSTRACT The Firmicutes Thermoanaerobacter sulfurigignens and Thermoanaerobacterium thermosulfurigenes convert thiosulfate, forming sulfur globules inside outside cells. X-ray absorption near-edge structure analysis revealed that the consisted mainly of chains with organic end groups similar to formed in purple bacteria, suggesting possibility process globule formation by bacteria is an ancient feature.
Binary vapor−liquid equilibrium data were measured for the 1,1,1-trifluoroethane (HFC-143a) + n-butane (HC-600) system at temperatures from (313.15 to 363.15) K. This experiment was carried out with a circulating-type apparatus online gas chromatography. The experimental correlated well by Peng−Robinson−Stryjek−Vera equation of state Wong−Sandler mixing rules. average absolute deviation pressure and vapor composition between correlation below 0.98 % 0.0128, respectively.
For more efficient power management in processors, a high-frequency and multi-phase (MP) integrated voltage regulator (IVR) using multiple inductors would be an ideal solution to deliver optimized with rapid dynamic scaling (DVS) [1]–[5]. Nevertheless, practical use, MP-IVRs suffer from inter-inductor current imbalance because of mismatches inductances, different parasitic resistances, duty-control skews among all phases (top Fig. 18.1.1). Such mismatch may cause larger output ripple...
In this paper, based on the measured data of hull deflection, an approximated deflection curve is drawn using reverse analyzed and estimation method for flexibility analysis shaft alignment proposed by use approximate curve. Generally offset value after stern tube bearing a datum point with fore however has tendency which able to get higher if shafting system from as reference bottom direction according results study. By applying result study, next similar ships will be estimate how follow...
Simple and rapid detection of Burkholderia cepacia complex (BCC) bacteria, a common cause pharmaceutical product recalls, is essential for consumer safety. In this study, we developed evaluated ribB-based colorimetric loop-mediated isothermal amplification (LAMP) assay the BCC in (i) nuclease-free water after 361 days, (ii) 10 μg/mL chlorhexidine gluconate (CHX) solutions, (iii) 50 benzalkonium chloride (BZK) solutions 184 days. The RibB 5 primer specifically detected 20 strains but not 36...
Mobile IP and SIGMA are handoff schemes at the network layer transport respectively. is based on diversity aims to improve performance over mobile by reducing latency. We compared of in an experimental test bed. Results show that has a lower latency when IP. Moreover, can achieve seamless between two subnets.