Now showing items 1-20 of 1892

  • Slow Plastic Deformation (Creep) of 2D Dusty Plasma Solids 

    Hartmann, P.; Kovacs, A. Z.; Douglass, A. M.; Carmona-Reyes, J.; Matthews, L. S.; Hyde, T. W. (Physical Review Letters, 201-07-09)
    We report complex plasma experiments, assisted by numerical simulations, providing an alternative qualitative link between the macroscopic response of polycrystalline solid matter to small shearing forces and the possible ...
  • Gravitoelectrodynamics of Charged Grains in Saturn's F Ring: Encounters with Prometheus and Pandora 

    Matthews, Lorin; Hyde, Truell (Journal of Physics A, 2003-09-12)
    The dynamics of Saturn's F ring have been a matter of curiosity ever since Voyagers 1 and 2 sent back pictures of the ring's unusual features. Some of these images showed three distinct ringlets with the outer two displaying ...
  • A model of coagulation in dust clouds during grain charging 

    Barge, Laura; Matthews, Lorin; Hyde, Truell (Advances in Space Research, 2004)
    Initially uncharged grains in space and laboratory plasma environments become charged due to currents driven by potential differences in the dusty plasma. Certain macroscopic effects such as coagulation of smaller grains ...
  • Finite coulomb crystal formation 

    Vasut, John; Hyde, Truell; Barge, Laura (Advances in Space Research, 2004)
    Dust particles immersed within a plasma environment, such as those found in planetary rings or comets, will acquire an electric charge. If the ratio of the inter-particle potential energy to average kinetic energy is large ...
  • Charged Grains In Saturn's F-Ring: Interaction With Saturn's Magnetic Field 

    Matthews, Lorin; Hyde, Truell (Advances in Space Research, 2004)
    Saturn’s dynamic F-Ring still presents a challenge for understanding and explaining the kinematic processes that lead to the changing structure visible in our observations of this ring. This study examines the effect of ...
  • Effect of the Charge-Dipole Interaction on the Coagulation of Fractal Aggregates 

    Matthews, Lorin; Hyde, Truell (IEEE Transactions on Plasma Science, 2004)
    A numerical model with broad applications to complex (dusty) plasmas is presented. The self-consistent N-body code allows simulation of the coagulation of fractal aggregates, including the charge-dipole interaction of the ...
  • Dusty Plasma Correlation Function Experiment 

    Smith, Bernard; Vasut, John; Matthews, Lorin; Hyde, Truell; Reay, Jerry; Cook, Mike; Schmoke, Jimmy (Advances in Space Research, 2004)
    Dust particles immersed within a plasma environment, such as those in protostellar clouds, planetary rings or cometary environments, will acquire an electric charge. If the ratio of the inter-particle potential energy to ...
  • Digital Imaging and Analysis of Dusty Plasmas 

    Boesse, Carolyn; Henry, Michael; Hyde, Truell; Matthews, Lorin (Advances in Space Research, 2004)
    Dust particles immersed within a plasma environment, such as those found in planetary rings or cometary environments, will acquire an electric charge. If the ratio of interparticle potential energy to average kinetic energy ...
  • Phytoplankton growth model for a turbid pulsed aquatic ecosystem. 

    Umorin, Mikhail Pavlovich. (2005)
    The objective of this study was to develop a computer simulation that successfully predicted chlorophyll-a dynamics in Lake Waco. A small-scale batch culture was used to elucidate intrinsic growth rate and how it was ...
  • Periphyton-nutrient dynamics in a gradient-dominated freshwater marsh ecosystem. 

    Scott, J. Thad (Jefferson Thad). (Wilmington, N.C : Society of Wetland ScientistsOldendorf/Luhe, Germany : Inter-Research, 2005)
    In this study, the factors influencing the development of a nutrient availability gradient in a wetland ecosystem and the subsequent controls to, and feedbacks from, the structure and function of the periphyton community ...
  • Existence of positive solutions to singular right focal boundary value problems. 

    Maroun, Mariette. (Orlando, FL : International Publications., 2005-05)
    In this dissetation, we seek positive solutions for the n^th order ordinary differential equation, y^(n)=f(x,y), satisfying the right focal boundary conditions, y^(i)(0)=y^(n-2)(p)=y^(n-1)(1)=0, i=0,...,n-3, where p is a ...
  • Global Patent Protection: Channels of North & South Welfare Gain 

    Grinols, Earl L.; Lin, Hwan C. (2005-08-13)
    Much of the dynamic literature on intellectual property protection (IPP) arrays goods along a segment of the real line, one endpoint of which expands with innovation. A single margin of innovation brings computational ...
  • Existence of Equilibriuim in Welfare-enhancing Free Trade Areas 

    Grinols, Earl L.; Silva, Peri A. (2005-08-13)
    Proving the existence of equilibrium having specified properties is often synonymous with proving the result in trade theory. The Grandmont-McFadden proposition that any autarkic allocation can be replaced by a Pareto ...
  • Does Consumer Search Matter for Firm Markups? 

    Gwin, Carl R. (2005-08-13)
    This study investigates the relationship between consumer search costs, inflation, and firm markups in retail trade by employing actual measures of search cost. Consistent with theory, results indicate that markups can be ...
  • Do We Really Understand Home Ownership Rates? An International Study 

    Gwin, Carl R.; Ong, Seow-Eng (2005-08-13)
    This paper attempts to fill two gaps in the homeownership literature identified by Dietz and Haurin (2003): homeownership in less developed countries and the effects of race, ethnicity and income on tenure choice. We use ...
  • Religious Pluralism and Religious Adherence in U.S. Counties: Assessing the Reassessment 

    North, Charles, M.; Staha, Melissa B. (2005-08-13)
    We conduct an empirical test of the relationship between religious pluralism and religious participation in U.S. counties using a fixed-effects panel estimation technique. The empirical technique allows us to control for ...
  • Unemployment Duration under Wrongful Discharge Law 

    Nicholson, Kristin A.; North, Charles M. (2005-08-13)
    In the 1970’s and 1980’s, courts in most U.S. states adopted some type of common law wrongful discharge cause of action. The various causes of action for wrongful discharge are generally placed into three categories: public ...
  • Religious Freedom and State Religion in an Interational Panel 

    Gwin, Carl R.; North, Charles M. (2005-08-13)
    This paper explores the determinants and implications of church-state relationships. A theoretical model of a government’s decision to establish, or disestablish, a state church is developed and then tested with data from ...
  • Pharmaceuticals, Prescription Plans, and Promoting Progress 

    Grinols, Earl L.; Henderson, James W. (2005-08-13)
    Monopoly response to buyers who pay fraction c of the product cost is to raise the buyer price for the initial quantity q0 from p0 to 1/c p0, and adjust to a different price and quantity only if profits are thereby raised ...
  • Openness, the Sacrifice Ratio, and Inflation: Is there a Puzzle? 

    Daniels, Joseph P.; VanHoose, David D. (2005-08-13)
    The standard time-inconsistency-based explanation for the negative correlation between openness and inflation requires an inverse relationship between the sacrifice ratio and openness, but Daniels et al. (forthcoming) ...