A5014708466- 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
- Solar and Space Plasma Dynamics
- Ionosphere and magnetosphere dynamics
- Particle accelerators and beam dynamics
- Magnetic confinement fusion research
- Radiation Detection and Scintillator Technologies
- Cold Fusion and Nuclear Reactions
- Stellar, planetary, and galactic studies
- Radiation Therapy and Dosimetry
- Scientific Research and Discoveries
- Astro and Planetary Science
- Geophysics and Gravity Measurements
- Cosmology and Gravitation Theories
- Arctic and Antarctic ice dynamics
- Relativity and Gravitational Theory
- Global Energy and Sustainability Research
- Nuclear Issues and Defense
- Emotion and Mood Recognition
- Radio Wave Propagation Studies
University of Wisconsin–Madison
2002-2025
The University of Texas at Arlington
2024
Lawrence Berkeley National Laboratory
2024
Clark Atlanta University
2024
Southern University and Agricultural and Mechanical College
2024
Energy Center of Wisconsin
2020-2023
Vrije Universiteit Brussel
2022
University of Wisconsin–River Falls
2011-2021
RWTH Aachen University
2020
Plasma Technology (United States)
2007
The Optical Gravitational Lensing Experiment (OGLE) data on high‐amplitude δ Scuti stars (HADS) and RR Lyrae have been analyzed to determine the distance Galactic bulge. Individual color excesses V absorption for each individual variable star computed, which lead accurate 〈V0〉 magnitudes. period‐luminosity relation of HADS is utilized calculate moduli. We find that metal‐strong are concentrated strongly best modulus bulge from 14.49 ± 0.06 mag. dependence Mv period can be found...
Abstract The energy spectrum of Galactic cosmic-ray (GCR) ions at Earth varies with solar activity as these cross the heliosphere. Thus, this “solar modulation” GCRs provides remote sensing heliospheric conditions throughout ∼11 yr sunspot cycle and ∼22 magnetic cycle. A neutron monitor (NM) is a stable ground-based detector that measures rate variations above geomagnetic or atmospheric cutoff rigidity high precision (∼0.1%) over such timescales. Furthermore, we developed electronics...
Abstract Ground‐based neutron counters are a standard tool for detecting atmospheric showers from GeV range primary cosmic rays of either solar or galactic origin. Bare counters, type lead‐free monitor, function much like monitors but have different yield functions primarily because they more sensitive to neutrons lower energy. When operated together with monitors, the allow estimates be made energy spectrum particles. In 2010 new array 12 bare detectors was installed at South Pole operate...
Abstract The Galactic cosmic-ray spectrum manifests pronounced variations over the 11 yr sunspot cycle and more subtle 22 solar magnetic cycle. An important tool to study these is repeated latitude surveys with neutron monitors (NMs) on board icebreakers in conjunction land-based references. We revisit 13 annual from 1994 2007 using reference data Mawson NM instead of McMurdo (which closed 2017). then consider two (2018 2019) a monitor similar 3NM64 previous but without lead rings around...
Abstract Within our solar system, space weather is influenced by the wind and interplanetary magnetic field carried plasma. Severe storms can expose people to increased radiation levels, shut down electrical systems, interfere with radio signals. Space probably affects climate on planet, but we do not yet have a precise understanding of influence. Some aspects be monitored at ground level detector, such as “neutron monitor,” that measures cosmic rays from outer space. We developed portable...
Abstract Neutron monitors continuously record the hadronic part of secondary atmospheric radiation on ground, which originates from primary cosmic rays. In Thailand, we developed a mobile neutron monitor housed inside standard-size shipping container named “Changvan.” It contains three neutron-sensitive proportional counters set up in typical NM64 layout. However, central counter doesn’t have lead producer, leading us to refer it as “semi-leaded” monitor. We examined ray spectral variations...
Students often drift in and out of focus during class. Effective teachers recognize this re-engage them when necessary. With the shift to remote learning, have lost visual feedback needed adapt varying student engagement. We propose using readily available front-facing video infer attention levels based on movements eyes, head, face. train a deep learning model predict measure overt eye movements. Specifically, we Inter-Subject Correlation ten-second intervals while students watch same...
This paper briefly describes the principle of operation and science goals AMANDA high energy neutrino telescope located at South Pole, Antarctica. Results from an earlier phase telescope, called AMANDA-B10, demonstrate both reliable broad astrophysical reach this device, which includes searches for a variety sources ultrahigh neutrinos: generic point sources, Gamma-Ray Bursts diffuse sources. The predicted sensitivity angular resolution were confirmed by studies atmospheric muon backgrounds....
Abstract The name “Changvan” is given to a transportable neutron monitor, modernized by researchers in Thailand and housed inside standard-size shipping container. It contains three neutron-sensitive proportional counters, which contain enriched 10 BF 3 gas, detect cosmic ray showers. Primary rays are high-energy particles arriving from outer space. By colliding with atoms the atmosphere, they produce shower of sub-atomic particles, called secondary particles. Some can reach Earth’s surface,...
Abstract A neutron monitor (NM) is a ground- (or sea-) based detector of the flux cosmic ray particles in space. The high-energy rays GeV primary range interact upper atmosphere, producing cascade subatomic particles, some which reach Earth’s surface. mostly sensitive to component atmospheric cascade. standard-design (NM64) contains lead, nuclei fragment when struck by particle. Some fragments are neutrons moderated and trapped polyethylene acting as reflector moderator. These can then be...
Knowledge of patients affective state could prove to be crucial for health-care professionals in both diagnosis and treatment, however, this requires report how they feel. In practice the sampling rate states needs kept low, order ensure that can rest. Furthermore using traditional methods measuring states, is not always possible, e.g. incapable verbal communications. study we explore prediction peoples self-reported by multiple physiological signals. We use different Neural networks (NN)...
The Galactic cosmic ray spectrum manifests pronounced variations over the 11-year sunspot cycle and more subtle 22-year solar magnetic cycle. An important tool to study these is repeated latitude surveys with neutron monitors (NMs) onboard icebreakers in conjunction land-based references. We revisit 13 annual from 1994 2007 using reference data Mawson NM instead of McMurdo (which closed 2017). then consider two (2018 2019) a monitor similar 3NM64 previous but without lead rings around...
Abstract The Optical Gravitational Lensing Experiment (OGLE) data on high-amplitude δ Scuti Stars (HADS) and RR Lyrae stars have been analyzed to determine the distance galactic bulge. We find a mean value of 14.47 ± 0.08 mag for bulge modulus. A small additive correction leads 7.9 0.3 kpc as best center.
Abstract Neutron monitors (NM64) are standard ground-based detectors that measure the flux of primary cosmic rays at GeV energies in space by counting secondary particles (mostly neutrons) from atmosphere cascades. The atmospheric neutrons detected induced nuclear fission a gas proportional counter. In design, there is lead ring to generate evaporation moderated polyethylene before being 10 BF 3 By omitting lead, so called “bare counters” respond lower energy on average and can be used...