A5056828627- Photonic and Optical Devices
- Photorefractive and Nonlinear Optics
- Asian Industrial and Economic Development
- Advancements in PLL and VCO Technologies
- Chaos-based Image/Signal Encryption
- Advanced Fiber Laser Technologies
- Advanced Optical Imaging Technologies
- Semiconductor materials and devices
- Cryptographic Implementations and Security
- Social Policy and Reform Studies
- Electromagnetic Compatibility and Noise Suppression
- Political Influence and Corporate Strategies
- Advanced Steganography and Watermarking Techniques
- Liquid Crystal Research Advancements
- Semiconductor Lasers and Optical Devices
- Cell Image Analysis Techniques
- Diverse Approaches in Healthcare and Education Studies
- Radio Frequency Integrated Circuit Design
- Power Line Communications and Noise
- Advanced Wireless Network Optimization
- Optical Polarization and Ellipsometry
- Orbital Angular Momentum in Optics
- ZnO doping and properties
- Glaucoma and retinal disorders
- Erythrocyte Function and Pathophysiology
Korea University
2015-2024
Korea Institute of Industrial Technology
2024
SK Group (South Korea)
2022-2024
RELX Group (United States)
2024
Sungkyunkwan University
2011-2023
Weatherford College
2023
Gangneung–Wonju National University
2023
Yonsei University
2000-2022
Institute for Basic Science
2021
National Health Insurance Service
2020
An adaptive subcarrier allocation and an modulation for multiuser orthogonal frequency-division multiplexing (OFDM) are considered. The optimal bit problems, which previously formulated as nonlinear optimizations, reformulated into solved by integer programming (IP). A suboptimal approach that performs loading separately is proposed. It shown the in this can be optimized linear-programming (LP) relaxation of IP, while performed a manner similar to single-user OFDM. In addition, heuristic...
This article introduces a 192-Gb 896-GB/s 12-high stacked third-generation high-bandwidth memory (HBM3 DRAM) with low power consumption and high-reliability traits. New design schemes features, including internal low-voltage signaling, center strobe calibration, through-silicon via (TSV) auto-calibration, symbol-correcting in-DRAM ECC, machine-learning-based layout optimization, allow large amounts of data transfers among the vertically base core dies limited delay mismatch or SI...
Quantitative phase (QP) images of red blood cells (RBCs), which are obtained by off-axis digital holographic microscopy, can provide quantitative information about three-dimensional (3D) morphology human RBCs and the characteristic properties such as mean corpuscular hemoglobin (MCH) MCH surface density (MCHSD). In this paper, we investigate modifications 3D in induced period storage time for purpose classification with different periods using microscopy. The based on duration is highly...
We present a simple technique to encrypt digital hologram of three-dimensional (3-D) object into stationary white noise by use virtual optics and then decrypt it digitally. In this the is encrypted our attaching computer-generated random phase key forcing them Fresnel propagate an arbitrary plane with illuminating wave given wavelength. It shown in experiments that proposed system robust blind decryptions without knowing correct propagation distance, wavelength, used encryption....
Counting morphologically normal cells in human red blood (RBCs) is extremely beneficial the health care field. We propose a three-dimensional (3-D) classification method of automatically determining RBCs phase image multiple that are obtained by off-axis digital holographic microscopy (DHM). The RBC holograms first recorded DHM, and then images reconstructed computational numerical algorithm. To design classifier, three typical shapes, which stomatocyte, discocyte, echinocyte, used for...
With the emergence of large-language models (LLM) and generative AI, which require an enormous amount model parameters, required memory bandwidth capacity for high-end systems is on unprecedented increase. To meet this need, we present extended version high-bandwidth memory-3 (HBM3 DRAM), HBM3E, achieves a 1280GB/s with cube density 48GB. New design schemes features, such as all-around power-through-silicon via (TSV), 6-phase read-data-strobe (RDQS) scheme, byte-mapping swap voltage-drift...
In the present study, we investigated effects of dried, hot-water extract Cordyceps militaris (CME) and its major metabolite (cordycepin) against ischemic damage. The repeated treatment with CME protected hippocampal CA1 pyramidal neurons from damage in gerbils. or cordycepin gerbils reduced 4-hydroxy-2-nonenal (a marker lipid peroxidation) immunoreactivity levels region. Glial fibrillary acidic protein immunoreactive astrocytes ionized calcium-binding adapter molecule 1 microglia...
In this paper, we propose a new method for color image-based authentication that combines multispectral photon-counting imaging (MPCI) and double random phase encoding (DRPE) schemes. The sparsely distributed information from MPCI the stationary white noise signal DRPE make intruder attacks difficult. method, original RGB image is down-sampled into Bayer image. three types of samples (red, green blue color) in are encrypted with amplitude part resulting photon counted. corresponding has...
The optimum condition for watermarking the digital hologram of a 3-D host object is analyzed. It shown in experiment that watermarked with weighting factor produces least errors reconstructed and decoded watermark even presence an occlusion attack.
Abstract The development of the Labor Party in South Korea will depend on whether politics evolves toward democratic deepening or neo-populism. It appears that rise was a political event resulted from prevailing current deepening. also born collective action part civil society organizations and labor course electoral reform. However, if regime does evolve favor neo-populism, conditions would enable Party's sustainable be radically eroded. prospects for might regarded skeptically as well...
Despite negative public opinion, the role of Korean government has expanded, while overcoming two rounds global financial crises. The phenomenon re-swelling state is mainly attributed to strengthening central bureaucracy, in particular rather than whole or state. argument 'state' 'government' after economic crises might be subject error generalization. Through crises, bureaucracy succeeded acquiring authority market supervision and industrial support. In consequence, bureaucracy's...
The parameters of a twisted-nematic liquid-crystal display (TN-LCD) are measured with no ambiguity when we measure the intensity transmittance system that simply consists TN-LCD, two polarizers, quarter-wave plate, and monochromatic beam. First show analytically director angle can have 90° twist molecules 180° ambiguity. Then uniquely by fitting theoretical predictions to without plate using quasi local-adiabatic condition. birefringence TN-LCD is next as function applied voltage. We design...
We previously demonstrated that ubiquitously expressed CP2c exerts potent erythroid-specific transactivation of α-globin through an unknown mechanism. This mechanism is reported here to involve specific CP2 splice variants and protein inhibitor activated STAT1 (PIAS1). identify a novel murine isoform CP2, CP2b, which identical CP2a except it has additional 36 amino acids encoded by extra exon. CP2b erythroid cell-specific transcriptional activation domain, requires the exon can form...
The government-chaebol nexus formed under Democratic Party governments reflects new state-market relations in Korea that are predicated on a democratic model emphasizing participation and equity. participatory logic of corporate reform assumes civic organizations, functioning as third sector, should act watchdogs whistle-blowers to correct any unequal market structures.
Bandwidths of memory interfaces have been increased tremendously to enable high-data throughput while maintaining single-ended signaling and the supply voltage I/O has scaled down. Due increasing interface bandwidth required area power consumption as well, resulting in higher circuit design costs [3]. A high-loss channel causes ISI, which turn limits maximum data rate. Therefore, complex equalizers are needed for compensation, additional dissipation overhead. As sampling rate increases,...
In this work, we evaluate the avalanche effect and bit independence properties of double random phase encoding (DRPE) algorithm in Fourier Fresnel domains. Experimental results show that DRPE has excellent characteristics both However, achieves better domain than domain. gives especially poor when only one is changed plaintext or encryption key. Despite this, shows satisfactory any other number bits changes To best our knowledge, first report on behaviors optical approaches for units.