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High-quality ordinary differential equation (ODE) solver libraries have a long history, going back to the 1970s. Over the past several years we have implemented, on top of the PETSc linear and nonlinear solver package, a new…

Numerical Analysis · Mathematics 2018-06-06 Shrirang Abhyankar , Jed Brown , Emil M. Constantinescu , Debojyoti Ghosh , Barry F. Smith , Hong Zhang

The fast algorithms in Fourier optics have invigorated multifunctional device design and advanced imaging technologies. However, the necessity for fast computations has led to limitations in the widely used conventional Fourier methods,…

Applied Physics · Physics 2024-06-25 Zhi Li , Xuhao Luo , Jing Wang , Xin Yuan , Dongdong Teng , Qiang Song , Huigao Duan

In this paper, we propose $FastDoc$ (Fast Continual Pre-training Technique using Document Level Metadata and Taxonomy), a novel, compute-efficient framework that utilizes Document metadata and Domain-Specific Taxonomy as supervision signals…

Computation and Language · Computer Science 2024-11-04 Abhilash Nandy , Manav Nitin Kapadnis , Sohan Patnaik , Yash Parag Butala , Pawan Goyal , Niloy Ganguly

A LiDAR Statistical Barnes Objective Analysis (LiSBOA) for optimal design of LiDAR scans and retrieval of the velocity statistical moments is proposed. The LiSBOA represents an adaptation of the classical Barnes scheme for the statistical…

Fluid Dynamics · Physics 2021-09-06 Stefano Letizia , Lu Zhan , Giacomo Valerio Iungo

An extensive service-based software system has been developed for real-time data acquisition (DAQ) on numerous subsystems of the Advanced Photon Source (APS) accelerator. The software, called DAQ, is based upon EPICS 3 Area-Detector with…

Instrumentation and Detectors · Physics 2019-10-18 T. Madden , N. Arnold , T. Berenc , E. Breeding , T. Fors , G. Shen , S. Veseli , Y. Yang , K. Vodopivec , W. Yoder

In many mathematical models of physical phenomenons and engineering fields, such as electrical circuits or mechanical multibody systems, which generate the differential algebraic equations (DAEs) systems naturally. In general, the feature…

Numerical Analysis · Computer Science 2015-06-15 Xiaolin Qin , Juan Tang , Yong Feng , Bernhard Bachmann , Peter Fritzson

Efficient and accurate time-domain simulation of electromagnetic fields in complex photonic devices is critical for designing broadband and ultrafast optical components, yet it is often limited by the high computational cost of conventional…

Optics · Physics 2026-02-05 Zaifan Wu , Yue You , Xian Zhou , Fan Zhang

The joint detection and classification of RF signals has been a critical problem in the field of wideband RF spectrum sensing. Recent advancements in deep learning models have revolutionized this field, remarkably through the application of…

Signal Processing · Electrical Eng. & Systems 2024-08-14 Xiwen Kang , Hua-mei Chen , Genshe Chen , Kuo-Chu Chang , Thomas M. Clemons

We present the results of an experimental study of an advanced moderate-resolution spectrograph based on a cascade of narrow-band holographic gratings. The main goal of the project is to achieve a moderately high spectral resolutionwith R…

Instrumentation and Methods for Astrophysics · Physics 2018-05-22 Eduard Muslimov , Gennady Valyavin , Sergei Fabrika , Faig Musaev , Gazinur Galazutdinov , Nadezhda Pavlycheva , Eduard Emelyanov

We focus on developing an effective Direction Of Arrival (DOA) estimation method for wideband sources based on the gridless sparse concept. Previous coherent methods have been designed by dividing wideband frequencies into a few subbands…

Signal Processing · Electrical Eng. & Systems 2021-03-05 Milad Javadzadeh Jirhandeh , Mohammad Hossein Kahae

The handling of units in an automated way by software systems can be a cumbersome procedure when the units are parsed as strings. Software systems parsing units have to take into account extensive tables of unit names, not always identical…

Astrophysics · Physics 2007-05-23 Pedro Osuna , Jesus Salgado

A fast explicit operator splitting (FEOS) method for the molecular beam epitaxy model has been presented in [Cheng, et al., Fast and stable explicit operator splitting methods for phase-field models, J. Comput. Phys., submitted]. The…

Numerical Analysis · Mathematics 2015-11-30 Xiao Li , Zhonghua Qiao , Hui Zhang

The Deep Underground Neutrino Experiment (DUNE) is a next-generation neutrino experiment that will probe the properties of these elusive particles with unparalleled precision. It will also act as an observatory for neutrino bursts caused by…

Instrumentation and Detectors · Physics 2024-05-30 Eric L. Flumerfelt

This paper presents a novel method for estimating the direction of arrival (DOA) for a non-uniform and sparse linear sensor array using the weighted lifted structure low-rank matrix completion. The proposed method uses a single snapshot…

Signal Processing · Electrical Eng. & Systems 2025-07-29 Saeed Razavikia , Mohammad Bokaei , Arash Amini , Stefano Rini , Carlo Fischione

We present P4Testgen, a test oracle for the P4$_{16}$ language. P4Testgen supports automatic test generation for any P4 target and is designed to be extensible to many P4 targets. It models the complete semantics of the target's…

We propose Stereo Direct Sparse Odometry (Stereo DSO) as a novel method for highly accurate real-time visual odometry estimation of large-scale environments from stereo cameras. It jointly optimizes for all the model parameters within the…

Computer Vision and Pattern Recognition · Computer Science 2017-08-29 Rui Wang , Martin Schwörer , Daniel Cremers

This paper proposes group-based distributed optimization (DO) algorithms on top of intelligent partitioning for the optimal power flow (OPF) problems. Radial partitioning of the graph of a network is introduced as a systematic way to split…

Optimization and Control · Mathematics 2024-08-07 Mehdi Karimi

We describe a new software package capable of predicting the spectra of solar-system planets, exoplanets, brown dwarfs and cool stars. The Versatile Software for Transfer of Atmospheric Radiation (VSTAR) code combines a line-by-line…

Earth and Planetary Astrophysics · Physics 2015-05-30 Jeremy Bailey , Lucyna Kedziora-Chudczer

Spectral type recognition is an important and fundamental step of large sky survey projects in the data reduction for further scientific research, like parameter measurement and statistic work. It tends out to be a huge job to manually…

Instrumentation and Methods for Astrophysics · Physics 2014-04-25 Hailong Yuan , Haotong Zhang , Yanxia Zhang , Yajuan Lei , Yiqiao Dong , Yongheng Zhao

Non-orthogonal space-time block codes (STBC) from cyclic division algebras (CDA) having large dimensions are attractive because they can simultaneously achieve both high spectral efficiencies (same spectral efficiency as in V-BLAST for a…

Information Theory · Computer Science 2009-01-14 Saif K. Mohammed , A. Chockalingam , B. Sundar Rajan
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