Results 21 to 30 of about 5,083,706 (300)

Computational complexity in electronic structure [PDF]

Phys. Chem. Chem. Phys., 2013
In quantum chemistry, the price paid by all known efficient model chemistries is either the truncation of the Hilbert space or uncontrolled approximations. Theoretical computer science suggests that these restrictions are not mere shortcomings of the algorithm designers and programmers but could stem from the inherent difficulty of simulating quantum ...
Whitefield, James D., Love, Peter John, Aspuru-Guzik, Alan   +2 more
openaire   +3 more sources

Fault Ride-Through Power Electronic Topologies for Hybrid Energy Storage Systems

Energies, 2020
This work presents a fault ride-through control scheme for a non-isolated power topology used in a hybrid energy storage system designed for DC microgrids.
Ramy Georgious, Jorge Garcia, Mark Sumner, Sarah Saeed, Pablo Garcia   +4 more
doaj   +1 more source

Periodic plane-wave electronic structure calculations on quantum computers

Materials Theory, 2023
A procedure for defining virtual spaces, and the periodic one-electron and two-electron integrals, for plane-wave second quantized Hamiltonians has been developed, and it was validated using full configuration interaction (FCI) calculations, as well as ...
Duo Song, Nicholas P. Bauman, Guen Prawiroatmodjo, Bo Peng, Cassandra Granade, Kevin M. Rosso, Guang Hao Low, Martin Roetteler, Karol Kowalski, Eric J. Bylaska   +9 more
doaj   +1 more source

Optoelectronic Instrumentation and Measurement Strategies for Optical Chemical (Bio)Sensing

Applied Sciences, 2021
There is a growing interest in the development of sensitive, portable, and low-cost instrumentation for optical chemical (bio)sensing. Such instrumentation can allow real-time decision-making for industry, farmers, and researchers.
Francisco Ferrero Martín, Marta Valledor Llopis, Juan C. Campo Rodríguez, Alberto López Martínez, Ana Soldado Cabezuelo, María T. Fernández-Arguelles, José M. Costa-Fernández   +6 more
doaj   +1 more source

QUANTUM COMPUTATION WITH BALLISTIC ELECTRONS [PDF]

International Journal of Modern Physics B, 2001
We describe a solid state implementation of a quantum computer using ballistic single electrons as flying qubits in 1D nanowires. We show how to implement all the steps required for universal quantum computation: preparation of the initial state, measurement of the final state and a universal set of quantum gates.
Ionicioiu, Radu, Amaratunga, Gehan, Udrea, Florin   +2 more
openaire   +2 more sources

Analysis of Intrinsic Switching Losses in Superjunction MOSFETs Under Zero Voltage Switching

Energies, 2020
Switching losses of power transistors usually are the most relevant energy losses in high-frequency power converters. Soft-switching techniques allow a reduction of these losses, but even under soft-switching conditions, these losses can be significant ...
Maria R. Rogina, Alberto Rodriguez, Diego G. Lamar, Jaume Roig, German Gomez, Piet Vanmeerbeek   +5 more
doaj   +1 more source

Hardware random numbers generator based on microcontroller [PDF]

MATEC Web of Conferences
The work considers the principles of development and organization of the random number generation system using a hardware generator of true random numbers. An analysis of noise sources for a hardware generator of true random numbers has been carried out.
Ostapets Denys, Dziuba Volodymyr, Ivin Pavlo   +2 more
doaj   +1 more source

Reconfigurable computing and electronic nanotechnology [PDF]

Proceedings IEEE International Conference on Application-Specific Systems, Architectures, and Processors. ASAP 2003, 2004
We examine the opportunities brought about by recent progress in electronic nanotechnology and describe the methods needed to harness them for building a new computer architecture. In this process we decompose some traditional abstractions, such as the transistor, into fine-grain pieces, such as signal restoration and input-output isolation.
Seth Copen Goldstein, Mihai Budiu, Mahim Mishra, Girish Venkataramani   +3 more
openaire   +1 more source

Recent developments in the general atomic and molecular electronic structure system.

Journal of Chemical Physics, 2020
A discussion of many of the recently implemented features of GAMESS (General Atomic and Molecular Electronic Structure System) and LibCChem (the C++ CPU/GPU library associated with GAMESS) is presented.
G. Barca, C. Bertoni, L. Carrington, D. Datta, N. D. De Silva, J. E. Deustua, D. Fedorov, J. R. Gour, A. Gunina, Emilie B. Guidez, Taylor Harville, S. Irle, J. Ivanic, K. Kowalski, Sarom S. Leang, Hui Li, Wei Li, J. Lutz, Ilias Magoulas, J. Mato, V. Mironov, H. Nakata, Buu Q. Pham, P. Piecuch, David L. Poole, Spencer R Pruitt, Alistair P. Rendell, Luke B Roskop, K. Ruedenberg, Tosaporn Sattasathuchana, Michael W. Schmidt, Jun Shen, L. Slipchenko, M. Sosonkina, Vaibhav Sundriyal, Ananta Tiwari, Jorge L. Galvez Vallejo, Bryce M. Westheimer, M. Włoch, Peng Xu, F. Zahariev, M. Gordon   +41 more
semanticscholar   +1 more source

Saliency-Based Rotor Spatial Position Displacement Self-Sensing for Self-Bearing Machines

Sensors, 2022
Self-bearing machines do not contain physical bearings but magnetic bearings. Both rotor rotary and spatial positions displacement are required in these types of machines to control the rotor position while it is levitating.
Ye gu Kang, Daniel Fernandez, David Diaz Reigosa   +2 more
doaj   +1 more source