Now showing items 1-17 of 17

    • Derivation of 2D Power-Law Velocity Distribution Using Entropy Theory 

      Fontana, Nicola; Marini, Gustavo; Singh, Vijay P. (2013-04-08)
      The one-dimensional (1D) power law velocity distribution, commonly used for computing velocities in open channel flow, has been derived empirically. However, a multitude of problems, such as scour around bridge piers, ...
    • Derivation of Furrow Geometry Using Entropy Theory 

      Singh, V. P. (American Society of Agricultural and Biological Engineers, 2012)
      The instantaneous unit hydrograph (IUH) is a commonly used method for computing surface runoff hydrographs from small watersheds. Assuming travel time as a random variable, a general equation for IUH is derived using the ...
    • Derivation of Rating Curves Using Entropy Theory 

      Singh, V. P. (American Society of Agricultural and Biological Engineers, 2010)
      Using the entropy theory, this study derives the stage‐discharge relation, often called the rating curve, which is based on two simple constraints: (1) the total probability and (2) the mean logarithmic discharge. Parameters ...
    • Discontinuous Galerkin Finite Element Method for the Nonlinear Hyperbolic Problems with Entropy-Based Artificial Viscosity Stabilization 

      Zingan, Valentin Nikolaevich (2012-07-16)
      This work develops a discontinuous Galerkin finite element discretization of non- linear hyperbolic conservation equations with efficient and robust high order stabilization built on an entropy-based artificial viscosity ...
    • Entropy approach for 2D velocity distribution in open-channel flow 

      Fiorentino, Mauro; Fontana, Nicola; Marini, Gustavo; De Martino, Giuseppe; Singh, Vijay P. (2011-11-21)
      In this paper, considering time-averaged velocity as a random variable, two-dimensional (2D) velocity distributions in open-channel flow have been derived based on the Shannon entropy concept and the principle of maximum ...
    • Entropy theory for derivation of infiltration equations 

      Singh, Vijay P. (American Geophysical Union, 2010)
      An entropy theory is formulated for modeling the potential rate of infiltration in unsaturated soils. The theory is composed of six parts: (1) Shannon entropy, (2) principle of maximum entropy (POME), (3) specification ...
    • Entropy theory for movement of moisture in soils 

      Singh, Vijay P. (American Geophysical Union, 2010)
      An entropy theory is formulated for one‐dimensional movement of moisture in unsaturated soils in the vertically downward direction. The theory is composed of five parts: (1) Tsallis entropy, (2) principle of maximum entropy, ...
    • Generic Properties of Actions of F_n 

      Hitchcock, James Mitchell (2011-10-21)
      We investigate the genericity of measure-preserving actions of the free group Fn, on possibly countably infinitely many generators, acting on a standard probability space. Specifically, we endow the space of all ...
    • Integrated Drought Modeling For Texas Under Climate Change Impact With Implications For Water Resources Planning 

      Rajsekhar, Deepthi (2014-12-02)
      Drought is a deficiency in the hydro climatic variable of interest that is experienced for an extended period of time. In many parts of the world, it is a normal, recurring feature of climate and is therefore inevitable. ...
    • Integrating Entropy and Copula Theories for Hydrologic Modeling and Analysis 

      Hao, Zengchao; Singh, Vijay P. (2015-04-15)
      Entropy is a measure of uncertainty and has been commonly used for various applications, including probability inferences in hydrology. Copula has been widely used for constructing joint distributions to model the dependence ...
    • An IUH Equation Based on Entropy Theory 

      Singh, V. P. (American Society of Agricultural and Biological Engineers, 2011)
      The instantaneous unit hydrograph (IUH) is a commonly used method for computing surface runoff hydrographs from small watersheds. Assuming travel time as a random variable, a general equation for IUH is derived using the ...
    • Modeling multisite streamflow dependence with maximum entropy copula 

      Hao, Z.; Singh, Vijay P. (American Geophysical Union, 2013)
      Synthetic streamflows at different sites in a river basin are needed for planning, operation, and management of water resources projects. Modeling the temporal and spatial dependence structure of monthly streamflow at ...
    • Quantum Channels and their Minimum Output Entropies 

      Mehlhop, Nathan Alexander; Ogletree, William Travis
      We investigate non-random quantum channels generated from the representation the- ory of orthogonal quantum groups to perform numerical computations for estimates of their minimum output entropies. In doing so, we address ...
    • Removing the Entropy Screen- To Let the Second Law Show 

      Steinmeyer, D. (Energy Systems Laboratory (http://esl.eslwin.tamu.edu), 1988-09)
      What we shape is what we see. When we try to shape something without seeing it clearly, the probability of achieving a happy result is low. When we talk about "saving energy" what we usually mean is "not wasting work". ...
    • Seasonal Precipitation Variability and Its Impact on Vegetation Dynamics under Climate Change and Aridity Spectra of the Southwest United States Ecosystems 

      Sohoulande Djebou, Dagbegnon Clement (2015-01-16)
      This study combines hydro-climatological and biological components for addressing variability in precipitation and vegetation patterns under climate change. We explore the marginal and interactive effects of vegetation and ...
    • Tsallis Entropy Theory for Derivation of Infiltration Equations 

      Singh, V. P. (American Society of Agricultural and Biological Engineers, 2010)
      An entropy theory is formulated for deriving infiltration equations for potential rate (or capacity) of infiltration in unsaturated soils. The theory is comprised of five parts: (1) Tsallis entropy, (2) principle of maximum ...
    • Tsallis Entropy-Based Flow Duration Curve 

      Byrd, Aaron; Cui, Huijuan; Singh, Vijay P. (American Society of Agricultural and Biological Engineers, 2014)
      The flow duration curve (FDC) is employed for addressing a multitude of problems in water resources engineering, such as prediction of the distribution of future flows, forecasting of future recurrence frequencies, comparison ...