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This study introduces a predictive maintenance strategy for high pressure industrial compressors using sensor data and features derived from unsupervised clustering integrated into classification models. The goal is to enhance model…

机器学习 · 计算机科学 2024-11-22 Alessandro Costa , Emilio Mastriani , Federico Incardona , Kevin Munari , Sebastiano Spinello

This article presents novel applications of unsupervised machine learning methods to the problem of event separation in an active target detector, the Active-Target Time Projection Chamber (AT-TPC). The overarching goal is to group similar…

计算机视觉与模式识别 · 计算机科学 2021-07-07 Robert Solli , Daniel Bazin , Michelle P. Kuchera , Ryan R. Strauss , Morten Hjorth-Jensen

High-intensity laser plasma interactions create complex computational problems because they involve both fluid and kinetic regimes, which need models that maintain physical precision while keeping computational speed. The research…

等离子体物理 · 物理学 2025-10-14 Sadra Saremi , Amirhossein Ahmadkhan Kordbacheh

Clustering plays a crucial role in computer science, facilitating data analysis and problem-solving across numerous fields. By partitioning large datasets into meaningful groups, clustering reveals hidden structures and relationships within…

数据库 · 计算机科学 2026-02-19 Aryan Esmailpour , Stavros Sintos

Magnetic reconnection is a process that changes magnetic field topology in highly conducting fluids. Within the standard Sweet-Parker model, this process would be too slow to explain observations (e.g. solar flares). In reality, the process…

星系天体物理 · 物理学 2017-04-05 Grzegorz Kowal , Diego A. Falceta-Gonçalves , Alex Lazarian , Ethan T. Vishniac

We present a new algorithm for the identification and physical characterization of current sheets and reconnection sites in 2D and 3D large scale relativisticmagnetohydrodynamic numerical simulations. This has been implemented in the PLUTO…

高能天体物理现象 · 物理学 2023-05-29 Matteo Nurisso , Annalisa Celotti , Andrea Mignone , Gianluigi Bodo

3D perception in point clouds is transforming the perception ability of future intelligent machines. Point cloud algorithms, however, are plagued by irregular memory accesses, leading to massive inefficiencies in the memory sub-system,…

硬件体系结构 · 计算机科学 2022-04-25 Yu Feng , Gunnar Hammonds , Yiming Gan , Yuhao Zhu

Magnetic reconnection requires the violation of the frozen-in condition which ties gyrating charged particles to the magnetic field inhibiting diffusion. Ongoing reconnection has been identified in near-Earth space as being responsible for…

空间物理 · 物理学 2014-01-24 R. A. Treumann , W. Baumjohann

The Kinetic Monte Carlo (KMC) method has become an important tool for examination of phenomena like surface diffusion and thin film growth because of its ability to carry out simulations for time scales that are relevant to experiments. But…

材料科学 · 物理学 2007-05-23 Talat S. Rahman , Abdelkader Kara , Altaf Karim , Oleg Trushin

Visual grouping is a key mechanism in human scene perception. There, it belongs to the subconscious, early processing and is key prerequisite for other high level tasks such as recognition. In this paper, we introduce an efficient, realtime…

计算机视觉与模式识别 · 计算机科学 2016-09-23 Dominik Alexander Klein , Dirk Schulz , Armin Bernd Cremers

Magnetic reconnection is a ubiquitous phenomenon for magnetized plasmas and leads to the rapid reconfiguration of magnetic field lines. During reconnection events, plasma is heated and accelerated until the magnetic field lines enclose and…

高能天体物理现象 · 物理学 2023-11-15 Jesse Vos , Hector Olivares , Benoit Cerutti , Monika Moscibrodzka

Kinetic simulations of collisionless plasmas are computationally challenging due to phase space mixing and filamentation, resulting in fine-scale velocity structures. This study compares three methods developed to reduce artifacts related…

等离子体物理 · 物理学 2025-03-21 Opal Issan , Oleksandr Chapurin , Oleksandr Koshkarov , Gian Luca Delzanno

The results of kinetic simulations of magnetic reconnection in Harris current sheets are analyzed. A range of guide fields is considered to study reconnection in plasmas characterized by different $\beta$ values, $\beta > m_e/m_i$. Both an…

天体物理学 · 物理学 2009-04-28 P. Ricci , J. U. Brackbill , W. Daughton , G. Lapenta

In this work we used unsupervised machine learning methods in order to find possible clustering structures in superconducting materials data sets. We used the SuperCon database, as well as our own data sets complied from literature, in…

超导电性 · 物理学 2022-07-13 B. Roter , N. Ninkovic , S. V. Dordevic

We have developed a machine learning algorithm capable of detecting ``out-of-domain data'' for trustworthy cosmological inference. By using data from two separate suites of cosmological simulations, we show that our algorithm is able to…

宇宙学与河外天体物理 · 物理学 2026-01-21 Ethan Tregidga , David Harvey , Luca Biggio , Felix Vecchi

Fast reconnection operating in magnetically dominated plasmas is often invoked in models for magnetar giant flares, for magnetic dissipation in pulsar winds, or to explain the gamma-ray flares observed in the Crab nebula, hence its…

高能天体物理现象 · 物理学 2016-07-27 L. Del Zanna , E. Papini , S. Landi , M. Bugli , N. Bucciantini

We conduct a multiparametric study of driven magnetic reconnection relevant to recent experiments on colliding magnetized laser produced plasmas using particle-in-cell simulations. Varying the background plasma density, plasma resistivity,…

等离子体物理 · 物理学 2018-06-15 K. V. Lezhnin , W. Fox , J. Matteucci , D. B. Schaeffer , A. Bhattacharjee , M. J. Rosenberg , K. Germaschewski

Magnetic reconnection is an explosive process that accelerates particles to high energies in Earth's magnetosphere, offering a unique natural laboratory to study this phenomenon. This study investigates how well data-driven fully kinetic…

空间物理 · 物理学 2026-02-18 Nadja Reisinger , Fabio Bacchini

In this paper, we present a new, optimization-based method to exhibit cyclic behavior in non-reversible stochastic processes. While our method is general, it is strongly motivated by discrete simulations of ordinary differential equations…

数据结构与算法 · 计算机科学 2016-09-12 Isabel Beckenbach , Leon Eifler , Konstantin Fackeldey , Ambros Gleixner , Andreas Grever , Marcus Weber , Jakob Witzig

Machine learning has recently emerged as a promising approach for studying complex phenomena characterized by rich datasets. In particular, data-centric approaches lend to the possibility of automatically discovering structures in…