A5023628992- Nuclear physics research studies
- Nuclear Physics and Applications
- Advanced Combustion Engine Technologies
- Vehicle emissions and performance
- Quantum Chromodynamics and Particle Interactions
- Metallurgy and Material Forming
- Particle physics theoretical and experimental studies
- Traffic control and management
- X-ray Spectroscopy and Fluorescence Analysis
- Metal Forming Simulation Techniques
- Atomic and Molecular Physics
- Real-time simulation and control systems
- Crystallography and Radiation Phenomena
- X-ray Diffraction in Crystallography
- Autonomous Vehicle Technology and Safety
- Combustion and flame dynamics
- Hydraulic and Pneumatic Systems
- Semiconductor materials and devices
- Refrigeration and Air Conditioning Technologies
- Advanced Chemical Physics Studies
- Powder Metallurgy Techniques and Materials
- Biodiesel Production and Applications
- Mechanical Behavior of Composites
- Engineering Applied Research
- Electric and Hybrid Vehicle Technologies
National IT industry Promotion Agency
2025
Peking University
2025
State Key Laboratory of Turbulence and Complex Systems
2025
Hanyang University
2013-2020
Hyundai Motors (South Korea)
2020
Samsung (South Korea)
2020
Anyang University
2013-2018
University of Illinois Urbana-Champaign
1963-2015
Kia Motors (South Korea)
2009
Inha University
2002-2007
Increasing demands on high-data-rate and low-latency cellular communications are accelerating the developments of millimeter-wave (mm-wave) systems for 5G NR in 28 39GHz bands. In order to provide communication worldwide, high-performance low-cost RF chipset solutions required. Recently, mm-wave CMOS/BiCMOS phased-array transceivers 28GHz band have been reported [1]–[5]. However, there very limited reports [6], which is one main frequency bands US, Canada, China other countries. this paper,...
Al 2 O 3 incorporated HfO2 films grown by atomic layer deposition were investigated using various measurement tools. The accumulation capacitance of the Al2O3 into film increases as postannealing temperature because changes in interfacial and upper thickness stoichiometry. core-level energy state a 15 Å thick shows shift to higher binding energy, result silicate formation incorporation. incorporation has no effect on at interface between Si, while ionic bonding characteristics hybridization...
Received 19 December 1962DOI:https://doi.org/10.1103/PhysRevLett.10.299©1963 American Physical Society
This study focuses on reducing the weight of oxygen respirators in firefighters' personal protective equipment (PPE), which currently accounts for about 56% total weight. The heavy PPE, weighing between 20 and 25 kg, restricts movement can lead to musculoskeletal injuries. To address this, investigates using a carbon fiber-reinforced composite backrest respirator reduce while maintaining strength. was fabricated long-fiber thermoplastic (LFT) made with PA66 resin 30wt.% fiber...
Fiber-reinforced polymers (FRPs) are being increasingly used to replace rebars as reinforcements for concrete. In this study, the flexural behavior of one-way concrete slabs reinforced with a grid-type carbon FRP (CFRP) (carbon grid), in form strands embossed surfaces, was experimentally investigated. The experimental variables included effective depth, number grid layers, and compressive strength. results exhibit that surface embossing CFRP effectively improves their bonding based on crack...
Cutting of fibers at the intersections could effectively mitigate problems associated with fiber accumulation in thick ribs composite grids. However, effectiveness varies according to different rib cutting angles structure. Therefore, five samples 30°, 45°, 60°, 75°, and 90° were prepared this study. Concurrently, numerical model for tensile compressive behavior was established considering zero-thickness interface elements. The results indicated that as angle decreased, strength gradually...
The photoneutron cross sections for ${\mathrm{Ni}}^{58}$, ${\mathrm{Ni}}^{60}$, and natural nickel from threshold up to 25 MeV have been measured. integrated ($\ensuremath{\gamma},n$) section ${\mathrm{Ni}}^{60}$ is 2.6 times as large the value two cross-section curves exhibit markedly different structure over giant-dipole resonance region. results suggest that it important include shell effects explicitly in theoretical treatment of states medium nuclei such isotopes.
In the resonant-scattering experiment of monochromatic iron-capture gamma rays from natural cadmium, five inelastically scattered photon groups were observed in addition to 7.64-MeV elastic group. The spectrum low-energy cascade photons coincidence with identifies inelastic be transitions low-lying levels ${\mathrm{Cd}}^{112}$, including three ${2}^{+}$ vibrational at 0.61, 1.29, and 1.46 MeV. Angular-distribution measurements show that resonance level ${\mathrm{Cd}}^{112}$ has angular...
The microstructure of Ta2O5 thin films, deposited onto Si substrates by atomic layer deposition (ALD), was investigated, using in situ transmission electron microscopy (TEM). As-deposited amorphous films crystallize as the orthorhombic phase L-Ta2O5 upon heating at 750°C. Two dominant crystallographic orientations are found, one with (0 0 1) and (1 11 0) planes perpendicular to substrate, while other has parallel substrate. grains consist subgrains which rotated a few degrees respect each...
${\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$ electroproduction from $^{12}\mathrm{C}$ has been studied at 90\ifmmode^\circ\else\textdegree\fi{} (laboratory) for ${T}_{\ensuremath{\pi}}\ensuremath{\simeq}17 \mathrm{and} 29$ MeV. Transitions to discrete final states in $^{12}\mathrm{B}$ and $^{12}\mathrm{N}$ were observed up 4.5-MeV excitation energy. The results are analyzed using virtual-photon theory. resulting photoproduction cross sections reasonable agreement with recent...
The nuclear resonant scattering of the monochromatic iron capture gamma rays from natural nickel was studied with a single NaI crystal and three-crystal pair spectrometer. spectrum scattered photons exhibits three photon groups 7.64, 6.47, 5.38 MeV relative intensities 0.69, 0.08, 0.23, respectively. low-energy cascade in coincidence identifies these transitions 7.64-MeV level to ${0}^{+}$ ground state first (${2}^{+}$, 1.17 MeV) second (${0}^{+}$, 2.05 vibrational levels...
The photoneutron cross section of natural calcium has been measured from 15 to 30 MeV using the bremsstrahlung University Virginia electron synchrotron. neutron yields, in 0.5-MeV intervals, were used unfold sections both 1- and intervals. section, which reaches maximum value 16.8 mb at 20.25 MeV, exhibits considerable structure. Below 21 it was possible fit data superposition four discrete resonance curves Gaussian form,...
This paper presents design challenges and solutions for the fifth generation (5G) phased-array transceiver ICs in millimeter-wave (MMW) frequency bands. A 28nm bulk CMOS device technology is selected to integrate multiple RF elements a single-chip achieve high-level of TX EIRP RX sensitivity. Several approaches gain, P <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">OUT</inf> , stability, reliability linearity enhancement techniques are applied...
Differential cross sections for $^{14}\mathrm{N}(\ensuremath{\gamma}, {\ensuremath{\pi}}^{+})^{14}\mathrm{C}(\mathrm{g}.\mathrm{s}.)$ (${0}^{+}$1) have been measured an incident photon energy ${E}_{\ensuremath{\gamma}}=200$ MeV at laboratory angles of 45\ifmmode^\circ\else\textdegree\fi{}, 60\ifmmode^\circ\else\textdegree\fi{}, 75\ifmmode^\circ\else\textdegree\fi{}, 90\ifmmode^\circ\else\textdegree\fi{}, 120\ifmmode^\circ\else\textdegree\fi{}, and 140\ifmmode^\circ\else\textdegree\fi{}....
Strong spin-isospin mode, $T=1$, ${T}_{z}=1$ analog states at 4.5 MeV in $^{12}\mathrm{B}$ were studied by the reaction $^{12}\mathrm{C}(e, {e}^{\ensuremath{'}}{\ensuremath{\pi}}^{+})^{12}\mathrm{B}$ electron energy ${E}_{e}=200$ MeV. The photoproduction cross sections seven angles ranging from 30\ifmmode^\circ\else\textdegree\fi{} to 150\ifmmode^\circ\else\textdegree\fi{} obtained with use of virtualphoton theory and an experimentally determined real-to-virtual photon ratio. results are...
The connected powertrain control, which uses intelligent transportation system information, has been widely researched to improve driver convenience and energy efficiency. vehicle state prediction on decelerating driving conditions can be applied automatic regenerative braking in electric vehicles. However, drivers feel a sense of heterogeneity when control is performed based results from general model. As result, deceleration model represents individual characteristics required ensure more...
This paper investigates an air system model for a light duty diesel engine with dual-loop exhaust gas recirculation (EGR) and variable geometric turbocharger (VGT). The proposed estimates unmeasurable states using only equipped sensors on mass product engines. maximum error of thermodynamic are when the temperature, pressure less than 5% flow rate is 0.003 kg/s. Temperature dynamics transport delay obtained to improve estimation performance in transient operating conditions. validated under...