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The inclusive reactions $pp \rightarrow e^+ e^- X$ and $np \rightarrow e^+ e^- X$ at the laboratory kinetic energy of 1.25 GeV are investigated in a model of dominance of nucleon and $\Delta$ resonances. Experimental data for these…

Nuclear Theory · Physics 2015-05-30 B. V. Martemyanov , M. I. Krivoruchenko , Amand Faessler

Evolutionary algorithms often struggle to find well converged (e.g small inverted generational distance on test problems) solutions to multi-objective optimization problems on a limited budget of function evaluations (here, a few hundred).…

Neural and Evolutionary Computing · Computer Science 2025-04-30 Christopher M. Pierce , Young-Kee Kim , Ivan Bazarov

Accurate models of the scrape-off layer are required for the design and operation of tokamak fusion reactors. Scrape-off layer simulations are computationally expensive, difficult to operate and suffer from numerical instabilities. A…

Plasma Physics · Physics 2026-04-22 Stefan Dasbach , Sebastijan Brezinsek , Yunfeng Liang , Dirk Reiser , Sven Wiesen

Design and optimization of higher efficiency, lower-emission internal combustion engines are highly dependent on fuel chemistry. Resolving chemistry for complex fuels, like gasoline, is challenging. A solution is to study a fuel surrogate:…

Chemical Physics · Physics 2018-07-23 Shane R. Daly , Kyle E. Niemeyer , William J. Cannella , Christopher L. Hagen

Over many years, computational simulations based on Density Functional Theory (DFT) have been used extensively to study many different materials at the atomic scale. However, its application is restricted by system size, leaving a number of…

Mesoscale and Nanoscale Physics · Physics 2018-12-05 Carlos Romero-Muñiz , Ayako Nakata , Pablo Pou , David R. Bowler , Tsuyoshi Miyazaki , Rubén Pérez

The surrogate reaction method is an alternative to direct measurements of compound nuclear reaction cross sections. We introduce theory tools for extracting capture cross sections from experiments that use proton inelastic scattering as a…

Graphene oxide (GO) exhibits rich chemical heterogeneity that strongly influences its structural, thermal, and mechanical properties, yet quantitatively linking reduction chemistry to heat transport remains challenging. In this work, we…

We present a nonperturbative dynamical study of $e^+e^-$ production in proton-nucleus and nucleus-nucleus collisions from AGS to SPS energies on the basis of the covariant transport approach HSD. For p + Be reactions the dilepton yield for…

Nuclear Theory · Physics 2011-07-19 E. L. Bratkovskaya , W. Cassing

This paper describes an adaptive method in continuous time for the estimation of external fields by a team of $N$ agents. The agents $i$ each explore subdomains $\Omega^i$ of a bounded subset of interest $\Omega\subset X := \mathbb{R}^d$.…

Systems and Control · Electrical Eng. & Systems 2021-03-24 Jia Guo , Michael E. Kepler , Sai Tej Paruchuri , Haoran Wang , Andrew J. Kurdila , Daniel J. Stilwell

Statistical shape analysis of slabular objects like groups of hippocampi is highly useful for medical researchers as it can be useful for diagnoses and understanding diseases. This work proposes a novel object representation based on…

Methodology · Statistics 2024-09-09 Mohsen Taheri , Stephen M. Pizer , Jörn Schulz

We introduce a dilated coordinate method to address computational challenges in nuclear lattice effective field theory (NLEFT) for weakly-bound few-body systems. The approach employs adaptive mesh refinement via analytic coordinate…

Nuclear Theory · Physics 2025-09-18 Guangzhao He , Zhenyu Zhang , Teng Wang , Qian Wang , Bing-Nan Lu

A systematic approach based on the principles of supervised learning and design of experiments concepts is introduced to build a surrogate model for estimating the optical properties of fractal aggregates. The surrogate model is built on…

The decreasing costs and increasing speed and accuracy of DNA sample collection, preparation, and sequencing has rapidly produced an enormous volume of genetic data. However, fast and accurate analysis of the samples remains a bottleneck.…

Quantitative Methods · Quantitative Biology 2017-04-13 Stephanie Dodson , Darrell O. Ricke , Jeremy Kepner , Nelson Chiu , Anna Shcherbina

Recently, skeleton-based human action has become a hot research topic because the compact representation of human skeletons brings new blood to this research domain. As a result, researchers began to notice the importance of using RGB or…

Computer Vision and Pattern Recognition · Computer Science 2023-07-26 Yifan Jiang , Han Chen , Hanseok Ko

The choice of the representations is essential for deep gait recognition methods. The binary silhouettes and skeletal coordinates are two dominant representations in recent literature, achieving remarkable advances in many scenarios.…

Computer Vision and Pattern Recognition · Computer Science 2023-12-19 Chao Fan , Jingzhe Ma , Dongyang Jin , Chuanfu Shen , Shiqi Yu

Automated detection of sclerotic metastases (bone lesions) in Computed Tomography (CT) images has potential to be an important tool in clinical practice and research. State-of-the-art methods show performance of 79% sensitivity or…

Computer Vision and Pattern Recognition · Computer Science 2014-07-23 Holger R. Roth , Jianhua Yao , Le Lu , James Stieger , Joseph E. Burns , Ronald M. Summers

According to the dynamical quasiparticle model (DQPM) - matched to reproduce lattice QCD results in thermodynamic limit, - the constituents of the strongly interacting quark-gluon plasma (sQGP) are massive and off-shell quasi-particles…

Nuclear Theory · Physics 2015-05-18 O. Linnyk , E. L. Bratkovskaya , W. Cassing

Aim: Molecular dynamics simulations and normal mode analysis are well-established approaches to generate receptor conformational ensembles (RCEs) for ligand docking and virtual screening. Here, we report new fast molecular dynamics-based…

Quantitative Methods · Quantitative Biology 2016-02-17 G Moroy , O Sperandio , S Rielland , S Khemka , K Druart , D. Goyal , D. Perahia , M. A. Miteva

Incomplete knowledge of metabolic processes hinders the accuracy of GEnome-scale Metabolic models (GEMs), which in turn impedes advancements in systems biology and metabolic engineering. Existing gap-filling methods typically rely on…

Molecular Networks · Quantitative Biology 2024-09-23 Xiaoyi Liu , Hongpeng Yang , Chengwei Ai , Ruihan Dong , Yijie Ding , Qianqian Yuan , Jijun Tang , Fei Guo

The appearance of generative models has opened vast chemical spaces in the design of functional materials. Although machine learning interatomic potentials (MLIPs) have substantially accelerated phonon calculations, high-fidelity prediction…

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