Christopher Matthews

ORCID: 0000-0003-1468-1348
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About
Contact & Profiles
Research Areas
  • Nuclear Materials and Properties
  • Nuclear reactor physics and engineering
  • Radioactive element chemistry and processing
  • Fusion materials and technologies
  • Medical Imaging Techniques and Applications
  • High-Energy Particle Collisions Research
  • Particle physics theoretical and experimental studies
  • Quantum Chromodynamics and Particle Interactions
  • Nuclear and radioactivity studies
  • Nuclear Physics and Applications
  • Nuclear Engineering Thermal-Hydraulics
  • Advanced X-ray and CT Imaging
  • Radiation Detection and Scintillator Technologies
  • High Temperature Alloys and Creep
  • Digital Radiography and Breast Imaging
  • High-Velocity Impact and Material Behavior
  • Advanced Radiotherapy Techniques
  • Probabilistic and Robust Engineering Design
  • Advanced MRI Techniques and Applications
  • Advanced ceramic materials synthesis
  • Radiomics and Machine Learning in Medical Imaging
  • Cardiac, Anesthesia and Surgical Outcomes
  • Machine Learning in Materials Science
  • Graphite, nuclear technology, radiation studies
  • Methane Hydrates and Related Phenomena

Los Alamos National Laboratory
2016-2024

Government of the United States of America
2022

National Renewable Energy Laboratory
2022

Mecklenburg County Government
2020

University of Edinburgh
2013-2019

St James's University Hospital
2019

University of Leeds
2019

University of Bath
2018

Children's National
2015

University of California Davis Medical Center
2015

The last 2 years have been a period of unprecedented growth for the MOOSE community and software itself. number monthly visitors to website has grown from just over 3,000 now averaging 5,000. In addition, 1,800 pull requests merged since beginning 2020, new discussions forum averaged 600 unique per month. previous publication cited 200 times it was published ago. This paper serves as an update on some key additions changes code ecosystem years, well recognizing contributions community.

10.1016/j.softx.2022.101202 article EN cc-by SoftwareX 2022-10-11

We aimed to perform an observational study of age at loss independent ambulation (LoA) and side-effect profiles associated with different glucocorticoid corticosteroid (GC) regimens in Duchenne muscular dystrophy (DMD).We studied 340 participants the Cooperative International Neuromuscular Research Group Natural History Study (CINRG-DNHS). LoA was defined as continuous wheelchair use. Effects prednisone or prednisolone (PRED)/deflazacort (DFZ), administration frequency, dose were analyzed by...

10.1212/wnl.0000000000001950 article EN Neurology 2015-08-27

The development of MOOSE has kept accelerating since the last release, with over 2,100 pull requests merged 30 months that involved nearly fifty contributors across close to a dozen institutions internationally. growth in MOOSE's capabilities and downstream applications is reflected community. User support provided on GitHub discussions forum steadily increased 50 daily interactions. New simulation projects, notably model advanced nuclear reactor fusion devices, are driving significant...

10.1016/j.softx.2024.101690 article EN cc-by SoftwareX 2024-03-22

DireWolf is a multiphysics software driver application designed to simulate heat pipe–cooled nuclear microreactors. Developed under the U.S. Department of Energy, Office Nuclear Energy Advanced Modeling and Simulation (NEAMS) program, application’s objective provide community with design safety analysis simulation capability. Based upon NEAMS program Multiphysics Object-Oriented Environment (MOOSE) computational framework, tightly couples microreactor physics, reactor radiation transport,...

10.1080/00295450.2021.1906474 article EN public-domain Nuclear Technology 2021-07-03

Efficient solution via Newton's method of nonlinear systems equations requires an accurate representation the Jacobian, corresponding to derivatives component residual with respect degrees freedom. In practice these often arise from spatial discretization partial differential used model physical phenomena. These may involve domain motion or material that are complex functions systems' Computing Jacobian by hand in situations is arduous and prone error. Finite difference approximations its...

10.1080/00295450.2020.1838877 article EN cc-by Nuclear Technology 2021-02-22

A novel metal supported Solid Oxide Fuel Cell has been developed, capable of operating at temperatures 500-600°C. The rationale behind the materials used to construct this fuel cell type is given, and results presented from short stack testing, including durability thermal cycling trials. This new variant shown be tolerant carbon monoxide durable, robust redox cycling, delivering technologically relevant power densities.

10.1115/1.1794709 article EN Journal of Fuel Cell Science and Technology 2004-06-30

The recently published NEMA NU 4-2008 Standards has been specially designed for evaluating the performance of small animal PET scanners used in preclinical applications. In this paper, we report on 4 a clinical positron emission mammography (PEM) system. Since there are no PEM specific test protocols available, and 2 protocol (intended whole-body scanners) cannot be applied without modification due to compact design scanner, decided evaluate as an alternative. We obtained following results:...

10.1109/tns.2009.2036847 article EN IEEE Transactions on Nuclear Science 2010-02-01
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