Zobrazeno 1 - 10
of 104
pro vyhledávání: '"John, Close"'
Publikováno v:
Navigation, Vol 70, Iss 2 (2023)
Robust aiding of inertial navigation systems in GNSS-denied environments is critical for the removal of accumulated navigation error caused by the drift and bias inherent in inertial sensors. One way to perform such an aiding uses matching of geophys
Externí odkaz:
https://doaj.org/article/7562a89d20a04611847ff1c1604cc899
Autor:
Rafael Oliveira, Richard Scalzo, Robert Kohn, Sally Cripps, Kyle Hardman, John Close, Nasrin Taghavi, Charles Lemckert
Publikováno v:
Data-Centric Engineering, Vol 3 (2022)
Bayesian optimization (BO) has been a successful approach to optimize expensive functions whose prior knowledge can be specified by means of a probabilistic model. Due to their expressiveness and tractable closed-form predictive distributions, Gaussi
Externí odkaz:
https://doaj.org/article/08066c1c81cd45cdb9b4f040bea50a62
Autor:
Xuezhi Wang, Allison Kealy, Christopher Gilliam, Simon Haine, John Close, Bill Moran, Kyle Talbot, Simon Williams, Kyle Hardman, Chris Freier, Paul Wigley, Angela White, Stuart Szigeti, Sam Legge
Publikováno v:
Journal of Navigation. 76:91-102
While quantum accelerometers sense with extremely low drift and low bias, their practical sensing capabilities face at least two limitations compared with classical accelerometers: a lower sample rate due to cold atom interrogation time; and a reduce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d03e4b31169ee9edfdae33095337f1dc
https://doi.org/10.1017/s0373463322000637
https://doi.org/10.1017/s0373463322000637
Publikováno v:
Scientific Reports
Scientific Reports, Vol 10, Iss 1, Pp 1-11 (2020)
Scientific Reports, Vol 10, Iss 1, Pp 1-11 (2020)
We numerically demonstrate atomic Fabry-Perot resonances for a pulsed interacting Bose-Einstein condensate (BEC) source transmitting through double Gaussian barriers. These resonances are observable for an experimentally-feasible parameter choice, wh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f801ac0ba205a639d3b49bd71f08000a
https://doi.org/10.1038/s41598-020-71973-0
https://doi.org/10.1038/s41598-020-71973-0
Publikováno v:
Physical review letters
125 (2020): 100402-1–100402-8. doi:10.1103/PhysRevLett.125.100402
info:cnr-pdr/source/autori:Szigeti S.S.; Nolan S.P.; Close J.D.; Haine S.A./titolo:High-Precision Quantum-Enhanced Gravimetry with a Bose-Einstein Condensate/doi:10.1103%2FPhysRevLett.125.100402/rivista:Physical review letters (Print)/anno:2020/pagina_da:100402-1/pagina_a:100402-8/intervallo_pagine:100402-1–100402-8/volume:125
125 (2020): 100402-1–100402-8. doi:10.1103/PhysRevLett.125.100402
info:cnr-pdr/source/autori:Szigeti S.S.; Nolan S.P.; Close J.D.; Haine S.A./titolo:High-Precision Quantum-Enhanced Gravimetry with a Bose-Einstein Condensate/doi:10.1103%2FPhysRevLett.125.100402/rivista:Physical review letters (Print)/anno:2020/pagina_da:100402-1/pagina_a:100402-8/intervallo_pagine:100402-1–100402-8/volume:125
We show that the inherently large interatomic interactions of a Bose-Einstein condensate (BEC) can enhance the sensitivity of a high precision cold-atom gravimeter beyond the shot-noise limit (SNL). Through detailed numerical simulation, we demonstra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::743d83787eadfaf1f93a28260e091bc5
https://doi.org/10.1103/physrevlett.125.100402
https://doi.org/10.1103/physrevlett.125.100402
Publikováno v:
Plant, Cell & Environment. 40:237-248
© 2016 John Wiley & Sons Ltd Laboratory studies on artificial leaves suggest that leaf thermal dynamics are strongly influenced by the two-dimensional size and shape of leaves and associated boundary layer thickness. Hot environments are therefore s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b2e3cfac425643f2749ffa38ece9fe3
https://doi.org/10.1111/pce.12857
https://doi.org/10.1111/pce.12857
Autor:
John Close, Nicholas Robins, P. J. Everitt, P. B. Wigley, K. S. Hardman, P. Manju, C. Freier, Samuel Legge
Publikováno v:
Physical Review A. 99
A method for mitigating the readout delay characteristic of Bragg-based atom interferometry is presented, utilizing an asymmetric Mach-Zehnder interferometer sequence to generate spatial fringes that are read out while still overlapped. The time of f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::543507e4d80d0bac411e069c3912b2e1
https://doi.org/10.1103/physreva.99.023615
https://doi.org/10.1103/physreva.99.023615
Autor:
John Close, P. Manju, K. S. Hardman, M. A. Sooriyabandara, P. B. Wigley, Stuart S. Szigeti, Nicholas Robins, Michael R. Hush
The transmission of an interacting Bose-Einstein condensate incident on a repulsive Gaussian barrier is investigated through numerical simulation. The dynamics associated with interatomic interactions are studied across a broad parameter range not pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a1fd0e43ae3cb4a851c8b2a4e118ea8
Autor:
John Close
For nearly 70 years, NASCAR has been the premier sanctioning body for organized Stock Car Racing in the United States. During that time, the sport has grown from a Southern, regional series to a global brand with its races telecast in more than 100 c
Autor:
Carlos C. N. Kuhn, Massimiliano Guasoni, M. A. Sooriyabandara, P. Manju, Changjiang Wei, Yuri S. Kivshar, Stuart S. Szigeti, P. J. Everitt, K. S. Hardman, John Close, P. B. Wigley, Gordon McDonald, Nicholas Robins
We observe the breakup dynamics of an elongated cloud of condensed $^{85}$Rb atoms placed in an optical waveguide. The number of localized spatial components observed in the breakup is compared with the number of solitons predicted by a plane-wave st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f13644b2a7f92fbd9baf73d5bbeb31b3
https://eprints.soton.ac.uk/431183/
https://eprints.soton.ac.uk/431183/