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  • *Phototherapy  (1)
  • Carbon dioxide  (1)
  • Depressive Disorder/drug therapy/*therapy  (1)
  • Lagrangian relaxation  (1)
  • 2000-2004  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Modelling Vegetation-Atmosphere Co2 Exchange By A Coupled Eulerian-Langrangian Approach (2000)
    Springer
    Boundary layer meteorology 95 (2000), S. 91-122 
    Details
    ISSN: 1573-1472
    Keywords: Canopy turbulence ; Lagrangian stochastic model ; Turbulence closure ; Canopy photosynthesis ; Carbon dioxide ; Radiation attenuation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract A Eulerian-Lagrangian canopy microclimate model wasdeveloped with the aim of discerning physical frombiophysical controls of CO2 and H2O fluxes. The model couples radiation attenuation with mass,energy, and momentum exchange at different canopylevels. A unique feature of the model is its abilityto combine higher order Eulerian closure approachesthat compute velocity statistics with Lagrangianscalar dispersion approaches within the canopy volume. Explicit accounting for within-canopy CO2,H2O, and heat storage is resolved by consideringnon-steadiness in mean scalar concentration andtemperature. A seven-day experiment was conducted inAugust 1998 to investigate whether the proposedmodel can reproduce temporal evolution of scalar(CO2, H2O and heat) fluxes, sources andsinks, and concentration profiles within and above auniform 15-year old pine forest. The modelreproduced well the measured depth-averaged canopy surfacetemperature, CO2 and H2O concentrationprofiles within the canopy volume, CO2 storageflux, net radiation above the canopy, and heat andmass fluxes above the canopy, as well as the velocitystatistics near the canopy-atmosphere interface. Implications for scaling measured leaf-levelbiophysical functions to ecosystem scale are alsodiscussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1002473906184
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Solving the Unit Commitment Problem by a Unit Decommitment Method (2000)
    Springer
    Journal of optimization theory and applications 105 (2000), S. 707-730 
    Details
    ISSN: 1573-2878
    Keywords: power system scheduling ; unit commitment ; unit decommitment ; mixed-integer programming ; Lagrangian relaxation ; heuristic procedures
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract In this paper, we present a unified decommitment method to solve the unit commitment problem. This method starts with a solution having all available units online at all hours in the planning horizon and determines an optimal strategy for decommitting units one at a time. We show that the proposed method may be viewed as an approximate implementation of the Lagrangian relaxation approach and that the number of iterations is bounded by the number of units. Numerical tests suggest that the proposed method is a reliable, efficient, and robust approach for solving the unit commitment problem.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004653526131
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  • 3
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    Brightening depression (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-01-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wirz-Justice, Anna -- Terman, Michael -- Oren, Dan A -- Goodwin, Frederick K -- Kripke, Daniel F -- Whybrow, Peter C -- Wisner, Katherine L -- Wu, Joseph C -- Lam, Raymond W -- Berger, Mathias -- Danilenko, Konstantin V -- Kasper, Siegfried -- Smeraldi, Enrico -- Takahashi, Kiyohisa -- Thompson, Chris -- van den Hoofdakker, Rutger H -- New York, N.Y. -- Science. 2004 Jan 23;303(5657):467-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14739440" target="_blank"〉PubMed〈/a〉
    Keywords: Antidepressive Agents/therapeutic use ; Combined Modality Therapy ; Depression/drug therapy/*therapy ; Depressive Disorder/drug therapy/*therapy ; Humans ; *Phototherapy ; *Sleep Deprivation
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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