- Gaze Tracking and Assistive Technology
- Online and Blended Learning
- Radio Frequency Integrated Circuit Design
- Visual perception and processing mechanisms
- Advanced Power Amplifier Design
- GaN-based semiconductor devices and materials
- Innovative Teaching and Learning Methods
- Semiconductor Quantum Structures and Devices
- Visual and Cognitive Learning Processes
- Semiconductor materials and devices
- Color perception and design
- Education and Learning Interventions
- Online Learning and Analytics
- Educational Technology and Assessment
- EEG and Brain-Computer Interfaces
- Visual Attention and Saliency Detection
- Glaucoma and retinal disorders
- Open Education and E-Learning
- Human-Automation Interaction and Safety
- Surface and Thin Film Phenomena
- Intelligent Tutoring Systems and Adaptive Learning
- Neurobiology and Insect Physiology Research
- Retinal Imaging and Analysis
- Ergonomics and Musculoskeletal Disorders
- Multimedia Communication and Technology
Tokyo Institute of Technology
2016-2025
Institute of Science Tokyo
2024-2025
National Institute of Information and Communications Technology
2016-2024
University of Tsukuba
2023-2024
National Institute of Advanced Industrial Science and Technology
2023-2024
Toho University
2018-2024
Kyoto Sangyo University
2010-2023
AGH University of Krakow
2023
Wrocław University of Science and Technology
2023
The University of Tokyo
1965-2020
An energy band of a diamond lattice at $X(\mathrm{k}=(\frac{2\ensuremath{\pi}}{a})(1, 0, 0))$ on the zone boundary is two-fold degenerate because presence glide-reflection symmetries. The degeneracy conduction ${\ensuremath{\Delta}}_{1}$ and ${\ensuremath{\Delta}}_{{2}^{\ensuremath{'}}}$ $X$ in silicon was lifted by applying compressive uniaxial stress along [011] direction, effect which has been observed measuring shift cyclotron resonance line for [100] electrons. expression obtained terms...
For an electron in inhomogeneous system such as a junction with interface, the validity of including sharply varying interface potential effective-mass equation is questioned. A new scheme presented where wave function expressed terms eigenfunctions interface. An accompanying boundary conditions then derived to account for slowly external potential. The various results, depending on different types reflections, are categorized. theory applied here mainly space-charge layer MOSFET, particular...
A miniaturized linearizer using a parallel diode with bias feed resistance has been proposed. The positive gain and negative phase deviations can be used as for power amplifiers. These characteristics are provided by nonlinearity of the movement point caused voltage drop at resistance. By applying this to an S-band amplifier, improvement adjacent channel leakage 5 dB power-added efficiency 8.5% have achieved /spl pi//4-shift QPSK modulated signal.
There is some experimental evidence that the c(4\ifmmode\times\else\texttimes\fi{}2) structure low-temperature phase of Si(001) surface. The critical temperature for order-disorder transition was experimentally determined as about 200 K. This structural studied by using a two-dimensional Ising spin model whose interaction parameters were estimated first-principles total-energy calculations. Monte Carlo simulations then performed. effects dimer defects on nature are discussed.
Abstract This study examined the effects of emotional valence on stimulus‐preceding negativity (SPN) using reward and fine. A time estimation task under reward, punishment, combined, control conditions was performed. Participants were rewarded for accurate responses in condition, fined incorrect estimations punishment condition. combined correct fined. In neither a nor fine used. Results showed significant interaction condition × hemisphere. The SPN at left hemisphere increased For effect,...
The oculo-motor re ects the viewer s ability to process visual information. This paper examines whether was affected by two factors: rstly task dif culty and secondly eye-movement frequency. In this paper, indices were de ned as measurements of pupil size, blink eye-movement. For purpose study, experiments designed based on previous subsequential ocular tasks subjects required solve a series mathematical problems orally report their calculations.The results experiment found that size rate...
A novel series diode linearizer has been developed for mobile radio power amplifiers. It is composed of a with parallel capacitor, which provides positive amplitude and negative phase deviations the increase input power, can compensate AM-AM AM-PM distortions Applying this to 1.9 GHz MMIC amplifier Japanese Personal Handy-phone System (PHS), an improvement adjacent channel leakage (ACP) up 5 dB achieved /spl pi//4-shifted QPSK modulated signal.
Notch is a transmembrane receptor that shares homology with proteins containing epidermal growth factor-like repeats and mediates the cell-cell interactions necessary for many cell fate decisions. In Drosophila, O-fucosyltransferase 1 catalyzes O-fucosylation of these repeats. This O-fucose elongates, resulting in an O-linked tetrasaccharide regulates signaling activities Notch. Fucosyltransferases utilize GDP-fucose, which synthesized cytosol, but fucosylation occurs lumen endoplasmic...
The peroxisome biogenesis disorders (PBDs) are currently difficult-to-treat multiple-organ dysfunction that result from the defective of peroxisomes. Genes encoding Peroxins, which required for or functions, known causative genes PBDs. human peroxin PEX3 PEX16 peroxisomal membrane protein targeting, and their mutations cause Zellweger syndrome, a class Lack understanding about pathogenesis syndrome has hindered development effective treatments. Here, we developed potential Drosophila models...
At finite temperature, we calculate the self-energies and quasiparticles energies of low-lying subbands in an $n$-type inversion layer on a Si (100) surface. We employ finite-temperature plasmon-pole approximation to evaluate first-order screened interaction. low conc\ifmmode \dot{e}\else \.{e}\fi{}ntrations find that magnitudes decrease with temperature for all subbands. However, at high concentrations, excited increase while ground subband continues decrease. The separations including...
This paper describes a high efficiency (68%), output power (100W), reliability GaN HEMT amplifier for C-band space applications. The is achieved by 2nd-harmonic frequency (2fo) tuning circuits in the input and matching circuits. circuit uses open-ended stubs located nearby FET gate terminals setting 2fo reflection-phase at optimum phase. In circuit, reflection phase realized using three transmission-line transformers while loss kept low fundamental frequency. addition, 3000 hour's RF...
There are various definitions and survey methods for scientific literacy. Taking into consideration the contemporary significance of literacy, we have defined it with an emphasis on its social aspects. To acquire insights needed to design a form science communication that will enhance literacy each individual, conducted large-scale random within Japan individuals older than 18 years, using printed questionnaire. The data thus acquired were analyzed factor analysis cluster create...
This paper describes a high efficiency (68%), output power (100 W), reliability GaN HEMT amplifier for C-band space applications. The is achieved by 2nd-harmonic frequency (2f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">o</sub> ) tuning circuits in the input and matching circuits. circuit uses open-ended stubs located nearby FET gate terminals setting 2f reflection-phase at optimum phase. In circuit, reflection phase realized using three...
The synaptic cleft is the space through which neurotransmitters convey neural information between two terminals. This presumably filled with extracellular matrix molecules involved in function or differentiation. However, little known about identities of components, and it remains unclear how these organize clefts. In this study, we identified Hasp, a Drosophila secretory protein containing CCP WAP domains. Molecular genetic analysis revealed that Hasp diffuses extracellularly predominantly...
To obtain high-performance THz-wave-emitting devices made of single crystals Bi2Sr2CaCu2O8+δ (Bi2212), a high-temperature superconductor, an understanding the device characteristics based on crystal can be key issue because, in principle, electrical properties intrinsic Josephson junctions (IJJs) constructed Bi2212 highly depend conditions, such as carrier concentration, homogeneities, and defects. evaluate tendencies associated with characteristics, we prepared different Bi/Sr ratios...
This paper describes the influence of eye blinks on frequency analysis and power spectrum difference for task-evoked pupillography eye-movement during an experiment which consisted ocular following tasks oral calculation with three levels task difficulty: control, 1×1,and 1×2 digit calculation.The compensation model temporal pupil size based MLP (multi layer perceptron) was trained to detect a blink estimate by using blinkless pupillary change artificial patterns. The PSD (power density)...