搜索结果: 61-75 共查到“理学 Exchange”相关记录327条 . 查询时间(0.132 秒)
Stratified economic exchange on networks
Physics and Society (physics.soc-ph) Social and Information Networks (cs.SI) Cellular Automata and Lattice Gases (nlin.CG)
2010/11/10
We investigate a model of stratified economic interactions between agents when the notion of spatial location is introduced. The agents are placed on a network with near-neighbor connections. Interact...
Observation of exchange Coulomb interactions in the quantum Hall state at nu=3
exchange Coulomb interactions quantum Hall state
2010/11/19
Coulomb exchange interactions of electrons in the = 3 quantum Hall state are determined from
two inter-Landau level spin-flip excitations measured by resonant inelastic light scattering. The two co...
Ultimate crack and lack of any security in the statistical key exchange protocol with random signals and feedback
Ultimate crack Quantum Physics
2010/11/8
We deterministically crack the secure, statistical key exchange protocol based on feedback proposed by Pao-Lo Liu [ J. Lightwave Techology 27 (2009) pp. 5230-34]. The crack is ultimate and absolute be...
Review and parameterisation of bi-directional ammonia exchange between vegetation and the atmosphere
bi-directional ammonia exchange vegetation the atmosphere
2010/11/29
Current deposition schemes used in atmospheric chemical transport models do not generally account for bi-directional exchange of ammonia (NH3). Bi-directional exchange schemes, which have so far been ...
Possible realization of the Exciton Bose Liquid phase in a hard-core boson model with ring-only exchange interactions
Possible realization ring-only exchange interactions
2010/11/17
We investigate a hard-core boson model with ring-only exchanges on a square lattice, where a K1
term acts on 1×1 plaquettes and a K2 term acts on 1×2 and 2×1 plaquettes, with a goal of realizing a no...
Sparse paving matroids, basis-exchange properties, and cyclic flats
Sparse paving matroids basis-exchange properties cyclic flats
2010/11/9
We provide evidence for five long-standing, basis-exchange conjectures for matroids by proving them for the enormous class of sparse paving matroids. We also explore the role that these matroids may p...
Ab initio prediction of ferrimagnetism, exchange interactions and Curie temperatures in Mn2TiZ Heusler compounds
initio prediction of ferrimagnetism Curie temperatures
2010/11/19
The Heusler compounds Mn2TiZ (Z = Al, Ga, In, Si, Ge, Sn, P, As,Sb) are of large interest due to their potential ferrimagnetic properties and high spin polarization. Here, we present calculations of t...
Spin waves in magnetic quantum wells with Coulomb interaction and $sd$ exchange coupling
Spin waves magnetic quantum wells Coulomb interaction
2010/11/24
We theoretically describe the spin excitation spectrum of a two dimensional electron gas embedded in a quantum well with localized magnetic impurities. Compared to the previous work,
we introduce equ...
Possibility of exchange switching ferromagnet - antiferromagnet junctions
Possibility of exchange ferromagnet - antiferromagnet junctions
2010/11/24
Current flowing is studied in magnetic junctions consisting of a ferromagnetic metal (FM), antiferromagnetic conductor (AFM) and a nonmagnetic metal closing the electric circuit. The FM layer with hig...
Tunable subpicosecond electron bunch train generation using a transverse-to-longitudinal phase space exchange technique
Tunable subpicosecond electron bunch train generation transverse-to-longitudinal phase space
2010/11/16
We report on the experimental generation of a train of subpicosecond electron bunches. The bunch train generation is accomplished using a beamline capable of exchanging the coordinates between the hor...
Constraints on anomalous spin-spin interactions from spin-exchange collisions
Constraints anomalous spin-spin interactions spin-exchange collisions
2010/11/11
Measured and calculated cross sections for spin-exchange between alkali atoms and noble gases (specifically sodium and helium) are used to constrain anomalous spin-dependent forces between nuclei at t...
In this work, the exchange energy J for a system of two laterally-coupled quantum dots, each one with an electron, is calculated analytically and in a detailed form, considering them as hydrogen-like ...
The effects of clouds and aerosols on net ecosystem CO2 exchange over semi-arid Loess Plateau of Northwest China
clouds and aerosols net ecosystem CO2 exchange semi-arid Loess Plateau of Northwest China
2010/9/14
The impacts of clouds and atmospheric aerosols on the terrestrial carbon cycle at semi-arid Loess Plateau in Northwest China are investigated, by using the observation data obtained at the SACOL (Semi...
Excitons in Molecular Aggregates with Lévy Disorder: Anomalous Localization and Exchange Broadening of Optical Spectra
Excitons in Molecular Aggregates Lévy Disorder Anomalous Localization Exchange Broadening of Optical Spectra
2010/10/21
We predict the existence of exchange broadening of optical lineshapes in disordered molecular
aggregates and a nonuniversal disorder scaling of the localization characteristics of the collective elec...
Turbulent exchange and segregation of HOx radicals and volatile organic compounds above a deciduous forest
HOx radicals volatile organic compounds a deciduous forest
2010/8/16
The eddy covariance method was applied for the first time to estimate fluxes of OH and HO2 together with fluxes of isoprene, the sum of methyl vinyl ketone (MVK) and methacrolein (MACR) and the sum of...