Zobrazeno 1 - 10
of 351
pro vyhledávání: '"G. J. Daniell"'
Publikováno v:
Annales Geophysicae, Vol 26, Pp 853-866 (2008)
High resolution spectral data are used to estimate neutral temperatures at auroral heights. The data are from the High Throughput Imaging Echelle Spectrograph (HiTIES) which forms part of the Spectrographic Imaging Facility (SIF), located at Long
Externí odkaz:
https://doaj.org/article/b9b897db696e4aaa93f71a67c5f933ad
Autor:
J. T. Chalker, G J Daniell
The behavior of the two-particle spectral function, S(q), is examined in the hydrodynamic regime, at the mobility edge in a model for the integer quantized Hall effect. Results are presented from numerical diagonalization of the Hamiltonian for finit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4bbf9c46cb9bc530f6dff1ddbaf210d9
https://ora.ox.ac.uk/objects/uuid:2f8ca296-86d8-4020-90e0-2840e50d55fd
https://ora.ox.ac.uk/objects/uuid:2f8ca296-86d8-4020-90e0-2840e50d55fd
Autor:
Nickolay Ivchenko, Betty Lanchester, Dirk Lummerzheim, L. C. H. Miller, G. J. Daniell, O. Jokiaho
Publikováno v:
Annales Geophysicae. 26:853-866
High resolution spectral data are used to estimate neutral temperatures at auroral heights. The data are from the High Throughput Imaging Echelle Spectrograph (HiTIES) which forms part of the Spectrographic Imaging Facility (SIF), located at Longyear
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90fdae2a211a888759ee7d07f8886c5b
https://doi.org/10.5194/angeo-26-853-2008
https://doi.org/10.5194/angeo-26-853-2008
Publikováno v:
Physics in Medicine and Biology. 43:1731-1739
Ideally electrical impedance tomography (EIT) should not be oversensitive to electrode positions, but this conflicts with efforts to produce high-resolution images. Two procedures are presented that balance reducing the sensitivity to electrode posit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44b6edc8830408c56dfae1fc592e4355
https://doi.org/10.1088/0031-9155/43/6/025
https://doi.org/10.1088/0031-9155/43/6/025
Publikováno v:
Physics in Medicine and Biology. 43:1215-1224
It is proposed that image quality, for example the degree of roughness, in electrical impedance tomography is the essential measure required to regularize nonlinear reconstruction. Most previously published work has addressed efficiency, stabilizatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7fa21dc3c2918bb2cd484ab21e836ecf
https://doi.org/10.1088/0031-9155/43/5/012
https://doi.org/10.1088/0031-9155/43/5/012
Autor:
G. J. Daniell, B. D. Rainford
Publikováno v:
Hyperfine Interactions. 87:1129-1134
A novel approach to extracting frequency spectra from transverseμSR spectra is presented, based on the maximum entropy method. This has the advantages of ensuring positivity of the frequency spectra, and only deviating from a flat default level wher
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d52c39b89b0ba0a0afd8c42e0f067b24
https://doi.org/10.1007/bf02068515
https://doi.org/10.1007/bf02068515
Autor:
M. E. Barnes, D. McBryde, G. J. Daniell, G. Whitworth, A. L. Chung, A. H. Quarterman, K. G. Wilcox, A. Brewer, H. E. Beere, D. A. Ritchie, V. Apostolopoulos
Terahertz (THz) radiation can be generated by ultrafast photo-excitation of carriers in a semiconductor partly masked by a gold surface. A simulation of the effect taking into account the diffusion of carriers and the electric field shows that the to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::343c64e85e6372f521a11e72161666e4
Autor:
B H Blott, G J Daniell
Publikováno v:
Measurement Science and Technology. 4:462-467
A method is developed for the extraction, from SQUID magnetometer data, of a value for the total magnetic moment of an extended sample. Background drift associated with the superconducting magnet is usually a serious problem in these experiments and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::263d5b5088bc71b680cca0b880b01856
https://doi.org/10.1088/0957-0233/4/4/004
https://doi.org/10.1088/0957-0233/4/4/004
Publikováno v:
Journal of Physics: Condensed Matter. 5:485-490
The critical behaviour of wavefunctions at the Anderson metal-insulator transition is studied by numerical simulation, using as an example of a system with a mobility edge a two-dimensional tight-binding model with spin-orbit scattering. It is demons
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6ef90027da51f6560ae2676009db08f
https://doi.org/10.1088/0953-8984/5/4/016
https://doi.org/10.1088/0953-8984/5/4/016
Autor:
B J Caswell, G J Daniell
Publikováno v:
European Journal of Physics. 11:28-30
The authors present a new technique for calculating accurate eigenvalues of quantum mechanical Hamiltonians which are polynomials in p and q. The technique is independent of representation and uses only the commutation relation of the p and q operato
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2cade787ee1e26016a4d613b01d64308
https://doi.org/10.1088/0143-0807/11/1/004
https://doi.org/10.1088/0143-0807/11/1/004