Los Alamos National Laboratory

A Survey of Distributed Asynchronous Many-Task Models and Their Applications

Asynchronous many-task (AMT) runtime systems have become an important paradigm for expressing fine-grained parallelism and managing asynchrony in high-performance computing (HPC). Originating from early dataflow concepts, AMTs have evolved to enable dynamic task generation, expli...

Data-driven prediction of fifteen-year all-cause mortality among 2.3 million individuals in the VA

ABSTRACT We present a data-driven framework to predict 15-year all-cause mortality using outpatient administrative records for 2.3 million Veterans in the largest integrated U.S. healthcare system. Rather than relying on predefined clinical phenotypes, we used the 1,000 most comm...

Influence of Crystal Structure, Morphology, and Microstructure on Fracture Behavior of Natural Silica Sand at Particle Scale

Abstract The strength properties of individual sand grains play a critical role in understanding the macroscopic performance of granular materials in geotechnical and material science applications. This paper investigates the tensile strength of single-crystalline and noncrystall...

Low energy neutron light output characterization of EJ301D and deuterated stilbene with a comparison of light output characterization methods

The neutron-induced light yield of a 2.54 cm diameter by 2.54 cm long right circular cylinder of EJ301D and a (5.08 cm) \(^3\) custom made cube of deuterated trans -stilbene-d \(_{12}\) (d-stilbene) were measured over incident neutron energies from 300 keV to 2.2 MeV and 200 keV...

Quantifying Fire Behavior Prediction Uncertainty Associated with User-Defined Variables in WFDS

Coupled fire–atmosphere models (CFAMs) are increasingly proposed as an important tool for investigating a range of scientific and management questions, including the design of fuel management strategies. Uncertainty in CFAM outputs arises from environmental and fuel inputs, and a...