Search Results - "Jong-Wook Lee"
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Experimental Results of High-Efficiency Resonant Coupling Wireless Power Transfer Using a Variable Coupling Method
Published in IEEE microwave and wireless components letters (01-08-2011)“…We experimentally demonstrate that the efficiency of wireless power transfer utilizing resonant coupling is improved by applying the "matching condition." The…”
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Analysis and Experiment of Self‐Powered, Pulse‐Based Energy Harvester Using 400 V FEP‐Based Segmented Triboelectric Nanogenerators and 98.2% Tracking Efficient Power Management IC for Multi‐Functional IoT Applications
Published in Advanced functional materials (01-04-2023)“…A self‐powered system for the Internet of Things (IoT) is demonstrated for efficient energy harvesting of naturally available mechanical energy. In this…”
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An 11.8-fJ/Conversion-Step Noise Shaping SAR ADC with Embedded Passive Gain for Energy-Efficient IoT Sensors
Published in Sensors (Basel, Switzerland) (24-01-2022)“…Herein, we present a noise shaping successive-approximation-register (SAR) analog-to-digital converter (ADC) with an embedded passive gain multiplication…”
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An Efficient Power Management System Using Dynamically Configured Multiple Triboelectric Nanogenerators and Dual‐Parameter Maximum Power Point Tracking
Published in Advanced energy materials (01-01-2022)“…Triboelectric nanogenerators (TENGs) have shown great potential as sustainable energy sources with the advantages of a lightweight, low cost, simple…”
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3.6 mW Active-Electrode ECG/ETI Sensor System Using Wideband Low-Noise Instrumentation Amplifier and High Impedance Balanced Current Driver
Published in Sensors (Basel, Switzerland) (24-02-2023)“…An active electrode (AE) and back-end (BE) integrated system for enhanced electrocardiogram (ECG)/electrode-tissue impedance (ETI) measurement is proposed. The…”
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An 8.5 ps Resolution, Cyclic Vernier TDC Using a Stage-Gated Ring Oscillator and DWA-Based Dynamic Element Matching in 28 nm CMOS
Published in IEEE transactions on instrumentation and measurement (2022)“…Herein, we present a cyclic Vernier time-to-digital converter (TDC) using a stage-gated ring oscillator (SGRO) and data-weighted averaging (DWA) dynamic…”
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Microenvironmental remodeling as a parameter and prognostic factor of heterogeneous leukemogenesis in acute myelogenous leukemia
Published in Cancer research (Chicago, Ill.) (01-06-2015)“…Acute myelogenous leukemia (AML) is a heterogeneous disorder characterized by clonal proliferation of stem cell-like blasts in bone marrow (BM); however, their…”
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An active metasurface for field-localizing wireless power transfer using dynamically reconfigurable cavities
Published in Scientific reports (13-08-2019)“…Wireless power transfer (WPT) provides a convenient method of delivering energy to multiple devices. With the increasing use of WPT, safety concerns inevitably…”
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A Dynamically Adaptable Impedance-Matching System for Midrange Wireless Power Transfer with Misalignment
Published in Energies (Basel) (01-08-2015)“…To enable the geometrical freedom envisioned for wireless power transfer (WPT), fast dynamic adaptation to unpredictable changes in receiver position is…”
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Association between depression and antibiotic use: analysis of population-based National Health Insurance claims data
Published in BMC psychiatry (28-10-2021)“…Frequent exposure to antibiotic treatments may increase the risk of antibiotic resistance, which may threaten the effectiveness of future antibiotic…”
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Optimal Design of the PMSM Retaining Plate With 3-D Barrier Structure and Eddy-Current Loss-Reduction Effect
Published in IEEE transactions on industrial electronics (1982) (01-02-2018)“…From the constant-speed variable-output motor driving test result of an interior permanent-magnet synchronous motor for a pump drive, we observed that there…”
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A Compact and Efficient Boost Converter in a 28 nm CMOS with 90 mV Self-Startup and Maximum Output Voltage Tracking ZCS for Thermoelectric Energy Harvesting
Published in Sensors (Basel, Switzerland) (07-07-2023)“…There are increasing demands for the Internet of Things (IoT), wearable electronics, and medical implants. Wearable devices provide various important daily…”
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13
A 0.6-µW Chopper Amplifier Using a Noise-Efficient DC Servo Loop and Squeezed-Inverter Stage for Power-Efficient Biopotential Sensing
Published in Sensors (Basel, Switzerland) (06-04-2020)“…To realize an ultra-low-power and low-noise instrumentation amplifier (IA) for neural and biopotential signal sensing, we investigate two design techniques…”
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A Battery-Assisted Passive EPC Gen-2 RFID Sensor Tag IC With Efficient Battery Power Management and RF Energy Harvesting
Published in IEEE transactions on industrial electronics (1982) (01-11-2016)“…Herein, we present a fully integrated electronic product code (EPC) Gen-2 compatible battery-assisted passive (BAP) radio-frequency identification sensor tag…”
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Controlled Synthesis of Space–Time Modulated Metamaterial for Enhanced Nonreciprocity by Machine Learning
Published in Advanced intelligent systems (01-04-2024)“…Nonreciprocity plays a fundamental role in governing direction‐dependent asymmetric wave propagation. Previous approaches to nonreciprocity involve…”
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10T SRAM Computing-in-Memory Macros for Binary and Multibit MAC Operation of DNN Edge Processors
Published in IEEE access (2021)“…Computing-in-memory (CIM) is a promising approach to reduce latency and improve the energy efficiency of the multiply-and-accumulate (MAC) operation under a…”
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Validation of Recently Proposed Consensus Criteria for Thrombotic Microangiopathy After Allogeneic Hematopoietic Stem-Cell Transplantation
Published in Transplantation (27-10-2010)“…The lack of an accepted definition of transplantation-associated thrombotic microangiopathy (TMA) has led the Blood and Marrow Transplants Clinical Trials…”
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Screw dislocation driven martensitic nucleation: A step toward consilience of deformation scenario in fcc materials
Published in Acta materialia (01-08-2019)“…Martensitic transformation (MT), constituting an essential part of deformation scenario, plays a key role in plasticity and thermoelasticity of face-centered…”
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Korean species of the sawfly genus Hemibeleses (Hymenoptera: Tenthredinidae), with descriptions of two new species
Published in Journal of Asia-Pacific biodiversity (01-12-2021)“…The genus Hemibeleses Takeuchi is examined to include the following five species from Korea: H. athaliodes Takeuchi, H. fulva Park & Lee, sp. nov., H…”
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Clinical signs and symptoms associated with increased risk for thrombosis in patients with paroxysmal nocturnal hemoglobinuria from a Korean Registry
Published in International journal of hematology (01-06-2013)“…Paroxysmal nocturnal hemoglobinuria (PNH) is characterized by chronic, complement-mediated hemolysis, frequently leading to debilitating clinical symptoms and…”
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