Filters
Results 1 - 10 of 2227
Results 1 - 10 of 2227.
Search took: 0.026 seconds
Sort by: date | relevance |
Naot, D.; Yacoub, N.; Maron, M.D.
The sixth international Beer Sheva seminar on MHD flows and turbulence1990
The sixth international Beer Sheva seminar on MHD flows and turbulence1990
AbstractAbstract
[en] Short communication
Primary Subject
Source
Anon; 168 p; Mar 1990; p. 100-101; 6. international Beer Sheva seminar on MHD flows and turbulence; Jerusalem (Israel); 25 Feb - 2 Mar 1990
Record Type
Miscellaneous
Literature Type
Conference
Report Number
Country of publication
Reference NumberReference Number
Related RecordRelated Record
INIS VolumeINIS Volume
INIS IssueINIS Issue
De Vega, Ines; Banuls, Mari Carmen; Perez, A, E-mail: ines.devega@uni-ulm.de2010
AbstractAbstract
[en] According to recent studies (Amin et al 2008 Phys. Rev. Lett. 100 060503), the effect of a thermal bath may improve the performance of a quantum adiabatic search algorithm. In this paper, we compare the effects of such a thermal environment on the algorithm performance with those of a structured environment similar to the one encountered in systems coupled to an electromagnetic field that exists within a photonic crystal. Whereas for all the parameter regimes explored here, the algorithm performance is worsened by contact with a thermal environment, the picture appears to be different when one considers a structured environment. In this case we show that by tuning the environment parameters to certain regimes, the algorithm performance can actually be improved with respect to the closed system case. Additionally, the relevance of considering the dissipation rates as complex quantities is discussed in both cases. More specifically, we find that the imaginary part of the rates cannot be neglected with the usual argument that it simply amounts to an energy shift and in fact influences crucially the system dynamics.
Primary Subject
Source
Available from http://dx.doi.org/10.1088/1367-2630/12/12/123010; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
New Journal of Physics; ISSN 1367-2630;
; v. 12(12); [19 p.]

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] We propose a scheme to reversely construct a three-level Hamiltonian via the Rodrigues’ rotation formula and an auxiliary unitary transformation. The main goal of the scheme is designing feasible pulses to drive a three-level system to evolve rapidly from an arbitrary initial state to a desired final state. Numerical simulations demonstrate that the scheme is not only fast but also robust against the decoherence caused by fluctuations of control parameters and some dissipation factors. Besides, we apply the idea to implement a Hadamard gate in a three-level system, and the results show the present scheme is much faster compared with stimulated Raman adiabatic passage (STIRAP). Therefore, the scheme may be useful to find out an effective shortcut to the adiabatic passage in a three-level system. (letter)
Primary Subject
Source
Available from http://dx.doi.org/10.1088/1612-202X/aa512d; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Laser Physics Letters (Internet); ISSN 1612-202X;
; v. 14(2); [8 p.]

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Two examples (nonstationary and stationary) of magnetic field generation in a fluid by processes without self-excitation, semidynamo processes, are considered, when Joule dissipation of a magnetic field created by some impressed emf is compensated for (fully or partially) by simple motion (V = const) of the medium. The resultant field greatly exceeds the field generated by emf action in a stationary medium
Source
Cover-to-cover translation of Astronomicheskij Zhurnal (USSR).
Record Type
Journal Article
Journal
Soviet Astronomy; ISSN 0038-5301;
; v. 26(3); p. 362-363

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Ibgui, Laurent; Burrows, Adam; Spiegel, David S., E-mail: ibgui@astro.princeton.edu, E-mail: burrows@astro.princeton.edu, E-mail: dsp@astro.princeton.edu2010
AbstractAbstract
[en] In order to explain the inflated radii of some transiting extrasolar giant planets, we investigate a tidal heating scenario for the inflated planets WASP-4b, WASP-6b, WASP-12b, WASP-15b, and TrES-4. To do so, we assume that they retain a nonzero eccentricity, possibly by dint of continuing interaction with a third body. We calculate the amount of extra heating in the envelope that is then required to fit the radius of each planet, and we explore how this additional power depends on the planetary atmospheric opacity and on the mass of a heavy-element central core. There is a degeneracy between the core mass Mcore and the heating E-dotheating. Therefore, in the case of tidal heating, there is for each planet a range of {Mcore, e 2/Q'p} that can lead to the same radius, where Q'p is the tidal dissipation factor and e is the eccentricity. With this in mind, we also investigate the case of the non-inflated planet HAT-P-12b, which can admit solutions combining a heavy-element core and tidal heating. A substantial improvement of the measured eccentricities of such planetary systems could simplify this degeneracy by linking the two unknown parameters {Mcore, Q'p}. Further independent constraints on either of these parameters would, through our calculations, constrain the other.
Primary Subject
Source
Available from http://dx.doi.org/10.1088/0004-637X/713/2/751; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The role of the clump lifetime τcl, logarithmically dependent on small scales, in determining the fluctuation level for forced, dissipative turbulence is reconsidered with the aid of an exactly solvable rapid-change model of passive advection. It is shown in mathematical detail that the common procedure of approximating the steady-state fluctuation level I by τclP, where P is the production rate or source of fluctuations, is invalid when a clean distinction can be made between energy-containing and inertial ranges. The correct result is I∼τDP, where τD is a macroscopic diffusion time that does not depend on the small scales. copyright 1997 American Institute of Physics
Primary Subject
Record Type
Journal Article
Journal
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] In this paper it is calculated the specific heat (Cv) of Bateman-Caldirola-Kanai dissipative systems
Primary Subject
Record Type
Journal Article
Journal
Nuovo Cimento. B; ISSN 0369-3554;
; v. 116BS12(4); p. 427-439

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] A nearly exact solution to the magnetohydrodynamic equations of a fluid of small resistivity describing the propagation of a helical magnetosonic wave parallel to the direction of a uniform magnetic field is given. Departures from an ideal magnetohydrodynamic situation in the context of the earth's magnetosphere seem to lead to a loss of charged particles from a given region. (author)
Source
6 refs.
Record Type
Journal Article
Journal
Acta Physica Academiae Scientiarum Hungaricae; ISSN 0001-6705;
; v. 52(2); p. 165-169

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Ljapunov theorem is applied in studies of stable equilibrium state of plasma
Original Title
Kalibrovka vektor-potentsiala i ustojchivye po Lyapunovu MGD ravnovesiya
Primary Subject
Record Type
Journal Article
Journal
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The study was carried out to compare the dissipation of fluroxypyr in a Malaysian agricultural soil based on field experimentation and simulation using the PERSIST and VARLEACH model. A plot situated in an oil palm plantation near Sepang, Selangor, Malaysia was selected for the field exper ment. The plot was treated with fluroxypyr at the recommended dosage (72.5 g ha1). The soil samples from the field trial were collected and anal ses conducted in the laboratory according to the sampling schedule. Simulation of fluroxypyr persistence and leaching was also conducted using computer-run software, PERSIST and VARLEACH. The predicted data obtained using PERSIST for fluroxypyr was found to be higher than the observed data from field measurements. However, the predicted data for fluroxypyr using VARLEACH matched well with the observed data from the field trial. (author)
Primary Subject
Source
Available from http://jopr.mpob.gov.my/; 4 tabs. 3 figs.
Record Type
Journal Article
Journal
Journal of Oil Palm Research; ISSN 1511-2780;
; v. 28(1); p. 26-33

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
External URLExternal URL
1 | 2 | 3 | Next |