Learning to Control Active Matter [PDF]
Phys. Rev. Research 3, 033291 (2021), 2021 The study of active matter has revealed novel non-equilibrium collective behaviors, illustrating their potential as a new materials platform. However, most works treat active matter as unregulated systems with uniform microscopic energy input, which we refer to as activity.
arxiv +1 more source
Active Space Pair 2-Electron Reduced Density Matrix Theory for Strong Correlation [PDF]
J. Phys. Chem. A 124, 4848-4854 (2020), 2020 An active space variational calculation of the 2-electron reduced density matrix (2-RDM) is derived and implemented where the active orbitals are correlated within the pair approximation. The pair approximation considers only doubly occupied configurations of the wavefunction which enables the calculation of the 2-RDM at a computational cost of ...
arxiv +1 more source
Fire Danger Assessment Using Moderate-Spatial Resolution Satellite Data
Fire, 2023 Fire is one of the most common disturbances in natural ecosystems. The analysis of various sources of information (official and unofficial) about the fires in Ukraine (2019–2020) showed a lack of timely and reliable information.
Nataliia Kussul +6 more
doaj +1 more source
The Problem of Legal Regulation of Archival Information Resources in the Field of Research on the Development of the Rocket and Space Industry [PDF]
Advanced Space Law, 2022 The article notes that in the maelstrom of military events on the territory of Ukraine, where the Russian Federation fired thousands of ballistic and cruise missiles, killing thousands of Ukrainians, interest in the topic of rocket and space technology ...
Liliya Popova +2 more
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Is level of neighbourhood green space associated with physical activity in green space? [PDF]
, 2013 Background There is accumulating evidence that greater availability of green space in a neighbourhood is associated with health benefits for the local population.
Mitchell, R., Ord, K., Pearce, J.
core +1 more source
Global Security: Ukrainian HOPSIS Program and Space Mission to Destroy Asteroids [PDF]
Advanced Space Law, 2023 The article highlights the actual problems of ensuring the Global Security of the World and Ukraine. The results of studying the experience of the Geneva Center for Security Policy and the legal provision of security are presented.
Volodymyr Prisyazhnyy +2 more
doaj +1 more source
Hall Fields and Current Systems of Magnetic Reconnection under Asymmetric Conditions
The Astrophysical Journal, 2023 The Hall effect is a key component of collisionless reconnection. A previous study showed that a quadrupolar Hall pattern under symmetric conditions degenerates into a bipolar pattern under highly asymmetric conditions.
Y. C. Zhang, S. Y. Tang
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Linear Scaling Calculations of Excitation Energies with Active-Space Particle-Particle Random Phase Approximation [PDF]
, 2023 We developed an efficient active-space particle-particle random phase approximation (ppRPA) approach to calculate accurate charge-neutral excitation energies of molecular systems. The active-space ppRPA approach constrains both indexes in particle and hole pairs in the ppRPA matrix, which only selects frontier orbitals with dominant contributions to ...
arxiv +1 more source
Space Law, Subjects and Jurisdictions: pre-1963 period
Аналітично-порівняльне правознавство, 2023 This article is a continuation of an extensive study of the process and results of the regulation of space activities over the period from 1958 to the present, the purpose of which is a deep analysis of international documents adopted over the entire ...
V.K. Marinich, M.I. Myklush
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Outer Space Public Law: the 1958-1963 period. Part 1.
Науковий вісник Ужгородського національного університету. Серія Право, 2023 This is the third article in the study related to analyzing the process of regulation of space activities. Considering the results of previous studies of documents adopted by the international community during the 1958 -1963 period in the field of ...
V. Marinich, M. Myklush, O. Yara
doaj +1 more source