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  • 1
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    Modèles en Mécanique Statistique des Processus Irréversibles : Cours organisé par le Troisième Cycle de la Physique en Suisse Romande (1979)
    Berlin ; Heidelberg : Springer
    Details
    ISBN: 9783540095095
    URL: http://www.springerlink.com/openurl.asp?genre=book&isbn=978-3-540-09509-5
    Language: English
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    E-BOOK
  • 2
    Electronic Resource
    Electronic Resource
    Lifetimes of impurity states in crossed magnetic and electric fields (1999)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 40 (1999), S. 3275-3282 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: We study the quantum dynamics of localized impurity states created by a point interaction for an electron moving in two dimensions under the influence of a perpendicular magnetic field and an in-plane weak electric field. All impurity states are unstable in presence of the electric field. Their lifetimes are computed and shown to grow in a Gaussian way as the electric field tends to zero. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.532886
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  • 3
    Electronic Resource
    Electronic Resource
    CARBON SINKS IN TEMPERATE FORESTS1 (2001)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Environment and Resources 26 (2001), S. 435-465 
    Details
    ISSN: 1056-3466
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract In addition to being scientifically exciting, commercially important, and environmentally essential, temperate forests have also become a key diplomatic item in international climate negotiations as potential sinks for carbon. This review presents the methods used to estimate carbon sequestration, identifies the constraints and opportunities for carbon sequestration in temperate forests, addresses the issues raised by the monitoring of carbon sequestration, and analyzes uncertainties pertaining to the sequestration of carbon by temperate forests. This review serves a dual purpose: It aims at informing policy makers about carbon sequestration in temperate forests and at making forest ecologists, biogeochemists, and atmospheric scientists aware of the structure of an international agreement to reduce CO2 and other greenhouse gas emissions and some of the real, still answered scientific questions that it poses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.energy.26.1.435
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  • 4
    Electronic Resource
    Electronic Resource
    Temperature effects in the multiphoton photoemission of laser irradiated α-SiO2 (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 76 (1994), S. 2264-2269 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The effects of the sample temperature on laser induced electron emission of α-SiO2 is discussed. The sample was irradiated using the third harmonic of a Nd:YAG laser, with pulse durations of 30 ps, at intensities in the 109 W cm−2 range, leading to an electron emission due to multiphoton absorption. We measured both the total photocurrent and the photoelectron energy spectrum for temperatures ranging between room temperature and 250 °C. We observed a strong increase of the photocurrent, which is associated with the disappearance of the charging effect due to the holes left by the emission. We interpret this as a result of a thermally induced, trapping/detrapping, electron conductivity. This interpretation is based on the fact that hole conductivity is too small to account for our observations and that intrinsic electron conductivity does not show the correct temperature behavior. The increase of the photocurrent is, however, mainly due to an increase of the defect creation yield with the temperature. From these observations possible applications to the problem of low energy electron spectroscopy on insulating samples are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.357646
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  • 5
    Electronic Resource
    Electronic Resource
    Can Regional Policies Affect Growth and Geography in Europe? (1998)
    Oxford, UK and Boston, USA : Blackwell Publishers Ltd
    The @world economy 21 (1998), S. 0 
    Details
    ISSN: 1467-9701
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Law , Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/1467-9701.00162
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  • 6
    Electronic Resource
    Electronic Resource
    Vegetation responses and feedbacks to climate: a review of models and processes (1993)
    Springer
    Climate dynamics 8 (1993), S. 201-210 
    Details
    ISSN: 1432-0894
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Vegetation changes both in stationary and changing climates. Such changes can significantly affect hydrological and climate dynamics. Probabilistic, inferential, empirical, statistical, threshold, ecophysiological, and mechanistic vegetation models provide tools and ideas to construct coupled climate and vegetation schemes to study climate/vegetation feedbacks. Their logic is discussed, typical applications are presented, and their usefulness is assessed. Developing coupled climate and vegetation schemes also implies tackling scaling issues explicitly. Just as the Courant-Friedrichs-Lewy (CFL) criterion guarantees that information is not transferred faster through space than time in climate models, information should be transmitted fast enough in vegetation models for the landscape to register vegetation responses. To guarantee that this is the case, a ‘migration criterion’, or ‘m criterion’, is proposed. The CFL criterion and the m criterion set formal constraints on the design of coupled atmosphere and vegetation schemes. In particular, the ratio of climate and vegetation space scales should be approximately five orders of magnitude less than the ratio of climate and vegetation time scales.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00207966
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  • 7
    Electronic Resource
    Electronic Resource
    On the equivalence between KMS-states and equilibrium states for classical systems (1977)
    Springer
    Communications in mathematical physics 53 (1977), S. 209-220 
    Details
    ISSN: 1432-0916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract It is shown that for any KMS-state of a classical system of non-coincident particles, the distribution functions are absolutely continuous with respect to Lebesgue measure; the equivalence between KMS states and Canonical Gibbs States is then established.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01609847
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  • 8
    Electronic Resource
    Electronic Resource
    Structure of gibbs states of one dimensional Coulomb systems (1980)
    Springer
    Communications in mathematical physics 78 (1980), S. 99-116 
    Details
    ISSN: 1432-0916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract We present a method of computing the Coulomb forces on particles in an infinite configuration of charges in one dimension. The resolution of the apparent nonuniqueness in this problem leads to a structural proof of the translation symmetry breaking in jellium, at all temperatures, and to a related phenomenon of phase nonuniqueness in the two component system. The appropriate generalizations of the DLR and KMS conditions for these states are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01941972
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  • 9
    Electronic Resource
    Electronic Resource
    PolyFormes: software for the declarative modelling of polyhedra (1999)
    Springer
    The visual computer 15 (1999), S. 55-76 
    Details
    ISSN: 1432-2315
    Keywords: Key words: Geometric modelling ; Declarative modelling ; Uniform polyhedron
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003710050162
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  • 10
    Electronic Resource
    Electronic Resource
    Feedback linearization and driftless systems (1994)
    Springer
    Mathematics of control, signals, and systems 7 (1994), S. 235-254 
    Details
    ISSN: 1435-568X
    Keywords: Nonlinear systems ; Feedback linearization ; Dynamic immersion ; Driftless systems ; Pfaffian systems
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Mathematics , Technology
    Notes: Abstract The problem of dynamic feedback linearization is recast using the notion of dynamic immersion. We investigate here a “generic” property which holds at every point of a dense open subset, but may fail at some points of interest, such as equilibrium points. Linearizable systems are then systems that can be immersed into linear controllable ones. This setting is used to study the linearization of driftless systems: a geometric sufficient condition in terms of Lie brackets is given; this condition is also shown to be necessary when the number of inputs equals two. Though noninvertible feedbacks are nota priori excluded, it turns out that linearizable driftless systems with two inputs can be linearized using only invertible feedbacks, and can also be put into a chained form by (invertible) static feedback. Most of the developments are done within the framework of differential forms and Pfaffian systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01212271
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