Results 31 to 40 of about 5,981,715 (415)
Reducing the Quantum Many-electron Problem to Two Electrons with Machine Learning [PDF]
J. Am. Chem. Soc. 144, 18959-18966 (2022), 2022 An outstanding challenge in chemical computation is the many-electron problem where computational methodologies scale prohibitively with system size. The energy of any molecule can be expressed as a weighted sum of the energies of two-electron wave functions that are computable from only a two-electron calculation. Despite the physical elegance of this
arxiv +1 more source
The Introduction of the Electronic Computer and the End of Business Forecasting at the NBER
Œconomia, 2023 For the greater part of the twentieth century, business forecasting has been a struggle against time. Forecasters needed reliable, comprehensive, and up-to-date data that would allow them to extrapolate trends for the months ahead.
Laetitia Lenel
doaj +1 more source
Quantum simulations of materials on near-term quantum computers [PDF]
npj Computational Materials, 2020 Quantum computers hold promise to enable efficient simulations of the properties of molecules and materials; however, at present they only permit ab initio calculations of a few atoms, due to a limited number of qubits.
He Ma, M. Govoni, G. Galli
semanticscholar +1 more source
DEVELOPMENT OF EYE-TRACKING BASED SYSTEMS FOR ALTERNATIVE AND AUGMENTATIVE COMMUNICATION
Наука и инновации в медицине, 2016 Rehabilitation of people with communication impairments is a socially important issue in Russia. Currently, there are no high-tech alternative and augmentative communication devices on the Russian market.
D A Balovnev, G G Znayko
doaj +1 more source
IEEE Access, 2020 Electronic textiles (e-textiles) development has been attracting significant research interest over the past two decades, especially in the field of wearable electronics.
Yi Li +4 more
doaj +1 more source
Nucleus-electron correlation revising molecular bonding fingerprints from the exact wavefunction factorization [PDF]
, 2021 We present a novel theory and implementation for computing coupled electronic and quantal nuclear subsystems on a single potential energy surface, moving beyond the standard Born-Oppenheimer (BO) separation of nuclei and electrons. We formulate an exact self-consistent nucleus-electron embedding potential from the single product molecular wavefunction,
arxiv +1 more source
Strategies to use tablet computers for collection of electronic patient-reported outcomes
Health and Quality of Life Outcomes, 2015 BackgroundMobile devices are increasingly being used for data collection in research. However, many researchers do not have experience in collecting data electronically.
K. Schick-Makaroff, A. Molzahn
semanticscholar +1 more source
Free-electron properties of metals under ultrafast laser-induced electron-phonon nonequilibrium: A first-principles study [PDF]
Physical Review B (Condensed Matter) 89 (2014) 115117, 2014 The electronic behavior of various solid metals (Al, Ni, Cu, Au, Ti, and W) under ultrashort laser irradiation is investigated by means of density functional theory. Successive stages of extreme nonequilibrium on picosecond time scale impact the excited material properties in terms of optical coupling and transport characteristics.
arxiv +1 more source
IEEE Access, 2021 The front-end readout channel consists of a charge sensitive amplifier (CSA) and two different unipolar-shaping circuits to generate pulses suitable for time and energy measurement.
T. Sanchez-Rodriguez +5 more
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First-principles calculations of hot-electron lifetimes in metals [PDF]
Phys. Rev. B 61, 13484 (2000), 2000 First-principles calculations of the inelastic lifetime of low-energy electrons in Al, Mg, Be, and Cu are reported. Quasiparticle damping rates are evaluated from the knowledge of the electron self-energy, which we compute within the GW approximation of many-body theory.
arxiv +1 more source