A5064710180- Astrophysics and Cosmic Phenomena
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Radio Astronomy Observations and Technology
- Particle physics theoretical and experimental studies
- Gamma-ray bursts and supernovae
- Pulsars and Gravitational Waves Research
- Computational Physics and Python Applications
- Solar and Space Plasma Dynamics
- Williams Syndrome Research
- Particle accelerators and beam dynamics
- Ionosphere and magnetosphere dynamics
- Scientific Research and Discoveries
- Particle Detector Development and Performance
- GaN-based semiconductor devices and materials
- Theoretical and Computational Physics
- Radio Wave Propagation Studies
- Magnetic Properties and Applications
- Reading and Literacy Development
- Language Development and Disorders
- Radio Frequency Integrated Circuit Design
- Atmospheric Ozone and Climate
- Radio, Podcasts, and Digital Media
- Gyrotron and Vacuum Electronics Research
- Genomics and Rare Diseases
Drexel University
2015-2024
Providence College
2012-2024
The University of Texas at Arlington
2023-2024
Lawrence Berkeley National Laboratory
2023-2024
Clark Atlanta University
2012-2024
Southern University and Agricultural and Mechanical College
2023-2024
Fujitsu (Japan)
2017-2024
University of Alaska Anchorage
2012-2024
Campbell Collaboration
2014-2023
Aichi Developmental Disability Center
2016-2023
The All-sky Medium Energy Gamma-ray Observatory eXplorer (AMEGO-X) is designed to identify and characterize gamma rays from extreme explosions accelerators. main science themes include: supermassive black holes their connections neutrinos cosmic rays; binary neutron star mergers the relativistic jets they produce; ray particle acceleration sources including Galactic supernovae; continuous monitoring of other astrophysical events over full sky in this important energy range. AMEGO-X will...
The detection of an astrophysical flux neutrinos in the TeV-PeV energy range by IceCube observatory has opened new possibilities for study extreme cosmic accelerators. apparent isotropy neutrino arrival directions favors extragalactic origin this flux, potentially created a large population distant sources. Recent evidence emission from sources include active galaxies TXS 0506+056 and NGC 1068. We here review current status search high-energy concentrating on its contribution. discuss...
The study reports the findings on a quaternary InAlGaN/GaN high electron mobility transistor (HEMT) employing thermal chemical vapor deposition (TCVD) silicon nitride (SiN <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">x</sub> ) passivation with record output power density of 31.0 W/mm in X-band. We compared two different SiN methods, namely, TCVD deposition, and plasma-enhanced CVD (PECVD) for HEMTs investigated effects device performance....
The spectrum of cosmic rays includes the most energetic particles ever observed.The mechanism their acceleration and sources are, however, still mostly unknown.Observing astrophysical neutrinos can help solve this problem.Because are produced in hadronic interactions neither absorbed nor deflected, they will point directly back to source.This contribution cover continued studies high-energy neutrino flux observed at IceCube observatory, extending them from three four years data with a focus...
Evidence indicates that individuals with Williams syndrome (WS) exhibit atypical attentional characteristics when viewing faces. However, the dynamics of visual attention captured by faces remain unclear, especially explicit forces are present. To clarify this, we introduced a search paradigm and assessed how relative strength face control changes as progresses.Participants (WS controls) searched for target (butterfly) within an array distractors, which sometimes contained upright face. We...
Ambient noise measured in the deep ocean is studied context of a search for signals from ultra-high energy cosmic ray neutrinos. The spectral shape at relevant high frequencies found to be very stable an extensive data set collected over several months 49 hydrophones mounted near bottom ~1600 m depth. slopes ambient spectra above 15 kHz are roll-off faster than -6 dB/octave seen Knudsen spectra. A model attributing source uniform distribution surface that includes frequency-dependent...
GaN high electron mobility transistors were integrated into monolithic microwave circuits (MMICs) by molding hetero-substrates and using a redistribution layer (RDL). Driver amplifiers (DAs) high-power (HPAs) on SiC substrates molded with matching Si including Cu-filled through-substrate vias (TSVs), their connected Cu RDL. This was the first attempt to fabricate hetero-substrate MMICs five chips for two-stage power amplifiers. method will be very useful increase achievable quantity of small...
Williams syndrome (WS) is a genetic disorder caused by the partial deletion of chromosome 7. Individuals with WS have atypical cognitive abilities, such as hypersociability and compromised visuospatial cognition, although mechanisms underlying these deficits, well relationship between them, remain unclear. Here, we assessed performance in mental rotation (MR) level 2 visual perspective taking (VPT2) tasks individuals without WS. obtained lower scores VPT2 task than MR task. These also...
An underwater acoustic sensor array spanning $\ensuremath{\sim}1500\text{ }\text{ }{\mathrm{km}}^{3}$ is used to search for cosmic-ray neutrinos of ultrahigh energies ( ${E}_{\ensuremath{\nu}}>{10}^{18}\text{ }\mathrm{eV}$). Approximately 328 million triggers accumulated over an integrated 130 days data taking are analyzed. The sensitivity the experiment determined from a Monte Carlo simulation using recorded noise conditions and expected waveforms. Two events found have properties...
Individuals with Williams syndrome (WS) exhibit an atypical social phenotype termed hypersociability. One theory accounting for hypersociability presumes function of the amygdala, which processes fear-related information. However, evidence is lacking regarding detection mechanisms fearful faces individuals WS. Here, we introduce a visual search paradigm to elucidate detecting by evaluating asymmetry; reaction time when both target and distractors were swapped was asymmetrical. Eye movements...
Magnetic phase transitions in coupled magnetic sandwiches of Cu/Co/Cu/Ni/Cu(100) and Cu/Co/Fe/Ni/Cu(100) are investigated by photoemission electron microscopy. Element-specific domains taken at room temperature to reveal the critical thickness which transition occurs. The results show that a sandwich undergoes three types depending on two ferromagnetic films' thickness. A diagram is constructed explained process constructing Monte Carlo simulations, corroborate experimental results.
Abstract Background Individuals with Williams syndrome (WS) exhibit atypical attentional characteristics when viewing faces. Although configural processing of faces has been reported in WS, the relative strengths and local feature information to capture visual attention WS remains unclear. We previously demonstrated that by target‐unrelated upright differs depending on what response is measured. Whereas eye movements reflected subtle properties at late stage search, manual responses could...
Magnetic anisotropy of Ni/Co/Ni/Cu(100) films was studied by the surface magneto-optical Kerr effect and photoemission electron microscopy. The top Ni Co enhance Curie temperature bottom layer so that magnetic can be in monolayer (ML) regime. In addition, film thicknesses were chosen to close spin-reorientation transition (SRT) manifests SRT whole film. We found magnetization direction oscillates as a function thickness with perpendicular appearing at \ensuremath{\sim}2 ML Ni. This result...
The combined data of IceCube's 40-string and 59-string configurations spanning over 700 days are used to search for astrophysical neutrinos originating from sources listed in several catalogs. A stacking method which stacks searches an integrated signal above the estimated background is employed. Very large scale such as neutrino emission galactic plane Fermi bubble region also extended source hypotheses. To perform these searches, a likelihood that tests presence using shape sources, their...
Perinatal brain injury may lead to later neurodevelopmental disorders, whose outcomes vary due neuroplasticity in young children. Recent neuroimaging studies have shown that the left parietotemporal area (which includes inferior parietal lobe) is associated with phonological awareness and decoding skills, which are essential skills for reading acquisition However, literature on effect of perinatal cerebral development or ability childhood limited.We report case an 8-year-old boy who...