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Inspired by recent experimental realizations of two-dimensional (2D) metals and alloys, we theoretically investigate the stability and electronic properties of monolayer (ML) Fe-C compounds and pure Fe. According to our and others…

Materials Science · Physics 2015-09-08 Yangfan Shao , Rui Pang , Xingqiang Shi

A previously proposed computational procedure for constructing a set of nonorthogonal strongly localised one-electron molecular orbitals (O. Danyliv, L. Kantorovich - physics/0401107) is applied to a perfect $\alpha$-quartz crystal…

Chemical Physics · Physics 2009-11-10 Oleh Danyliv , Lev Kantorovich

This paper presents a novel methodology to control spacecraft swarms about singleasteroids with arbitrary gravitational potential coefficients. This approach enablesthe use of small, autonomous swarm spacecraft in conjunction with a…

Space Physics · Physics 2020-07-22 Corinne Lippe , Simone D'Amico

We identify shell-like tidal structures in flattened haloes that appear stream-like under different projections. This projection dependence demonstrates how changes in the host halo directly impact the formation and classification of tidal…

Astrophysics of Galaxies · Physics 2026-04-09 Smrithi Gireesh Babu , Viraj Ekanayaka , William H. Oliver , Geraint F. Lewis

Constellation shaping is a practical and effective technique to improve the performance and the rate adaptivity of optical communication systems. In principle, it could also be used to mitigate the impact of nonlinear effects, possibly…

Information Theory · Computer Science 2022-06-08 Marco Secondini , Stella Civelli , Enrico Forestieri , Lareb Zar Khan

Rod-like objects at high packing fractions can form smectic phases, where the rods break rotational and translational symmetry by forming lamellae. Smectic defects thereby include both discontinuities in the rod orientational order…

Soft Condensed Matter · Physics 2023-12-01 Ethan I. L. Jull , Gerardo Campos-Villalobos , Qianjing Tang , Marjolein Dijkstra , Lisa Tran

The continuous 1D defects of an isotropic homogeneous material in a flat 3D space are classified by the Volterra process construction method. We employ the same method to classify the continuous 2D defects of a vacuum in a 4D maximally…

General Relativity and Quantum Cosmology · Physics 2011-11-29 Maurice Kleman

This paper investigates the accuracy of recently proposed stochastic geometry-based modeling of low earth orbit (LEO) satellite networks. In particular, we use the Wasserstein Distance-inspired method to analyze the distances between…

Networking and Internet Architecture · Computer Science 2022-07-26 Ruibo Wang , Mustafa A. Kishk , Mohamed-Slim Alouini

We expand the scope of cache memory to include LEO constellations, which are highly distributed systems with thousands of satellites connected with free-space optics inter-satellite links (ISL) always only one hop from any point on earth.…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-05-21 Thomas Sandholm , Sayandev Mukherjee , Lin Cheng , Bernardo A. Huberman

Low Earth orbit (LEO) satellite networks with mega constellations have the potential to provide 5G and beyond services ubiquitously. However, these networks may introduce mutual interference to both satellite and terrestrial networks,…

Signal Processing · Electrical Eng. & Systems 2024-08-23 Daeun Kim , Jeonghun Park , Jinseok Choi , Namyoon Lee

Large-scale low-Earth-orbit (LEO) satellite systems are increasingly valued for their ability to enable rapid and wide-area data exchange, thereby facilitating the collaborative training of artificial intelligence (AI) models across…

Machine Learning · Computer Science 2025-09-17 Binquan Guo , Junteng Cao , Marie Siew , Binbin Chen , Tony Q. S. Quek , Zhu Han

Low earth orbit (LEO) satellite-assisted communications have been considered as one of key elements in beyond 5G systems to provide wide coverage and cost-efficient data services. Such dynamic space-terrestrial topologies impose exponential…

Signal Processing · Electrical Eng. & Systems 2021-10-14 Yaxiong Yuan , Lei lei , Thang X. Vu , Zheng Chang , Symeon Chatzinotas , Sumei Sun

Low Earth Orbit (LEO) satellite networks are increasingly essential for space-based artificial intelligence (AI) applications. However, as commercial use expands, LEO satellite networks face heightened cyberattack risks, especially through…

Cryptography and Security · Computer Science 2024-11-12 Wenbo Wu , Cheng Tan , Kangcheng Yang , Zhishu Shen , Qiushi Zheng , Jiong Jin

In the field of material design, traditional crystal structure prediction approaches require extensive structural sampling through computationally expensive energy minimization methods using either force fields or quantum mechanical…

The class of tidal features around galaxies known variously as "shells" or "umbrellas" comprises debris that has arisen from high-mass-ratio mergers with low impact parameter; the nearly radial orbits of the debris give rise to a unique…

Astrophysics of Galaxies · Physics 2015-06-12 Robyn E. Sanderson , Amina Helmi

Low Earth Orbit (LEO) satellite constellations have seen a surge in deployment over the past few years by virtue of their ability to provide broadband Internet access as well as to collect vast amounts of Earth observational data that can…

Machine Learning · Computer Science 2022-09-27 Mohamed Elmahallawy , Tie Luo

Low Earth Orbit (LEO) satellites are emerging as key components of 6G networks, with many already deployed to support large-scale Earth observation and sensing related tasks. Federated Learning (FL) presents a promising paradigm for…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-07-31 Zhuocheng Liu , Zhishu Shen , Qiushi Zheng , Tiehua Zhang , Zheng Lei , Jiong Jin

We present a novel energy-based localization procedure able to localize molecular orbitals into specific spatial regions. The method is applied to several cases including both conjugated and non-conjugated systems. The obtained localized…

Chemical Physics · Physics 2022-09-13 Tommaso Giovannini , Henrik Koch

Quantum mechanical calculations of core electron binding energies (CEBEs) leading to 2p hole states are relevant to interpreting L-edge x-ray photo-electron spectroscopy (XPS), as well as higher edges. Orbital-optimized density functional…

Chemical Physics · Physics 2025-07-31 Richard Kang , Leonardo A. Cunha , Diptarka Hait , Martin Head-Gordon

The bent-core liquid crystals (LCs) are highly regarded as the next-generation materials for electro-optic devices. The nematic (N) phase of these LCs possesses highly ordered smectic-like cybotactic clusters which are promising in terms of…

Soft Condensed Matter · Physics 2019-02-06 Sourav Patranabish , Yiwei Wang , Aloka Sinha , Apala Majumdar