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Computational modeling of the properties of crystalline materials has become an increasingly important aspect of materials research, consuming hundreds of millions of CPU-hours at scientific computing centres around the world each year, if…

计算物理 · 物理学 2020-11-10 Yunzhe Wang , Pandu Wisesa , Adarsh Balasubramanian , Shyam Dwaraknath , Tim Mueller

The IBIS/ISGRI first year galactic plane survey has produced a catalogue containing 123 hard X-ray sources visible down to a flux limit of a few milliCrabs. The point source location accuracy of typically 1-3 arcminutes has allowed the…

天体物理学 · 物理学 2009-11-10 J. B. Stephen , L. Bassani , M. Molina , A. Malizia , A. Bazzano , P. Ubertini , A. J. Dean , A. J. Bird , R. Much , R. Walter

Pulgon-tools is an open-source software package providing building blocks for the analysis and modeling of quasi-one-dimensional (quasi-1D) periodic systems based on line-group theory. While mature libraries exist for space-group detection…

计算物理 · 物理学 2026-03-31 Yu-Jie Cen , Sandro Wieser , Georg K. H. Madsen , Jesús Carrete

A major goal of CMB experiments is to obtain highly sensitive CMB maps in order to extract Spherical Harmonic Power Spectrum (SHPS) and cosmological parameters with unprecedented accuracy. We present a new map-making code (Mirage), based on…

天体物理学 · 物理学 2016-08-30 D. Yvon , F. Mayet

simpcomp is an extension (a so called package) to GAP, the well known system for computational discrete algebra. The package enables the user to compute numerous properties of (abstract) simplicial complexes, provides functions to construct…

组合数学 · 数学 2019-10-24 Felix Effenberger , Jonathan Spreer

The Massive Parallel Computation (MPC) model is a theoretical framework for popular parallel and distributed platforms such as MapReduce, Hadoop, or Spark. We consider the task of computing a large matching or small vertex cover in this…

数据结构与算法 · 计算机科学 2018-07-24 Krzysztof Onak

We have developed a fast, accurate and generally applicable method for inferring the power spectrum and its uncertainties from maps of the cosmic microwave background (CMB) in the presence of inhomogeneous and correlated noise. For maps…

天体物理学 · 物理学 2014-10-13 O. Doré , L. Knox , A. Peel

X-ray photoelectron spectroscopy (XPS) measures core-electron binding energies (CEBEs) to reveal element-specific insights into chemical environment and bonding. Accurate theoretical CEBE prediction aids XPS interpretation but requires…

化学物理 · 物理学 2024-08-13 Anton Morgunov , Henry K. Tran , Oinam Romesh Meitei , Yu-Che Chien , Troy Van Voorhis

Bottom-up coarse-grained (CG) models proved to be essential to complement and sometimes even replace all-atom representations of soft matter systems and biological macromolecules. The development of low-resolution models takes the moves…

软凝聚态物质 · 物理学 2024-06-13 Marco Giulini , Raffaele Fiorentini , Luca Tubiana , Raffaello Potestio , Roberto Menichetti

We use models of spectrally resolved cosmic ray (CR) transport in TIGRESS MHD simulations of the local ISM to produce synthetic synchrotron emission and to test, on scales from a few kpc down to ~10 pc, the traditional estimate of magnetic…

高能天体物理现象 · 物理学 2025-11-19 Nora B. Linzer , Lucia Armillotta , Eve C. Ostriker , Eliot Quataert

We demonstrate the use of spatially encoded magnetic resonance to quantify ensemble dynamics of microscopic particles below the spatial resolution. By evaluating time series of k-space data-points, k-dependent motion patterns can be…

仪器与探测器 · 物理学 2018-05-16 Volker Herold , Thomas Kampf , Peter Michael Jakob

A crystal symmetry search is crucial for computational crystallography and materials science. Although algorithms and implementations for the crystal symmetry search have been developed, their extension to magnetic space groups (MSGs)…

材料科学 · 物理学 2023-06-08 Kohei Shinohara , Atsushi Togo , Isao Tanaka

In the recent years, we have seen a rapidly growing number of stellar magnetic field detections for various types of stars. Many of these magnetic fields are estimated from spectropolarimetric observations (Stokes V) by using the so-called…

太阳与恒星天体物理 · 物理学 2015-06-18 T. A. Carroll , K. G. Strassmeier

We present an open-source program irvsp, to compute irreducible representations of electronic states for all 230 space groups with an interface to the Vienna ab-initio Simulation Package. This code is fed with plane-wave-based wavefunctions…

材料科学 · 物理学 2021-01-13 Jiacheng Gao , Quansheng Wu , Clas Persson , Zhijun Wang

Physics-based, atom-centered machine learning (ML) representations have been instrumental to the effective integration of ML within the atomistic simulation community. Many of these representations build off the idea of atoms as having…

We study the computational power of deciding whether a given truth-table can be described by a circuit of a given size (the Minimum Circuit Size Problem, or MCSP for short), and of the variant denoted as MKTP where circuit size is replaced…

计算复杂性 · 计算机科学 2017-10-27 Eric Allender , Joshua A. Grochow , Dieter van Melkebeek , Cristopher Moore , Andrew Morgan

We present a method for parametric modelling of the physical components of the Galaxy's magnetised interstellar medium, simulating the observables, and mapping out the likelihood space using a Markov Chain Monte-Carlo analysis. We then…

星系天体物理 · 物理学 2010-01-29 T. R. Jaffe , J. P. Leahy , A. J. Banday , S. M. Leach , S. R. Lowe , A. Wilkinson

We present a two-level branch-and-bound (BB) algorithm to compute the optimal gripper pose that maximizes a grasp metric in a restricted search space. Our method can take the gripper's kinematics feasibility into consideration to ensure…

机器人学 · 计算机科学 2022-01-17 Min Liu , Zherong Pan , Kai Xu , Dinesh Manocha

As details are missing in most representations of structures, the lack of controllability to more information is one of the major weaknesses in structure-based controllable point cloud generation. It is observable that definitions of…

计算机视觉与模式识别 · 计算机科学 2024-05-07 Ximing Yang , Zhibo Zhang , Zhengfu He , Cheng Jin

Mixed-Integer Second-Order Cone Programs (MISOCPs) form a nice class of mixed-inter convex programs, which can be solved very efficiently due to the recent advances in optimization solvers. Our paper bridges the gap between modeling a class…

最优化与控制 · 数学 2022-06-22 Amir Ahmadi-Javid , Pooya Hoseinpour