Effective Potential Theory: A Practical Way to Extend Plasma Transport Theory to Strong Coupling

The effective potential theory is a physically motivated method for extending traditional plasma transport theories to stronger coupling. It is practical in the sense that it is easily incorporated within the framework of the Chapman-Enskog or Grad methods that are commonly applied in plasma physics and it is computationally efficient to evaluate. The extension is to treat binary scatterers as interacting through the potential of mean force, rather than the bare Coulomb or Debye-screened Coulomb potential. This allows for aspects of many-body correlations to be included in the transport coefficients. Recent work has shown that this method accurately extends plasma theory to orders of magnitude stronger coupling when applied to the classical one-component plasma model. The present work shows that similar accuracy is realized for the Yukawa one-component plasma model and it provides a comparison with other approaches.Comment: 6 pages, 3 figures, Proceedings of the Strongly Coupled Coulomb Systems conference 201

The ELMCIP Knowledge Base

This chapter documents the conceptual model of the ELMCIP Electronic Literature Knowledge Base, the development process that led to its development, and its technical implementation. It should be of interest to digital humanities researchers interested in the process of developing research infrastructure for the documentation of a field of research. Developed as part of an international, digital-humanities project, Developing a Networked-Based Creative Community: Electronic Literature as a Model of Creativity and Innovation in Practice (ELMCIP), the ELMCIP Electronic Literature Knowledge Base is an open-access, online database tracing activity in and around the field of electronic literature and the digital literary arts. Inspired by Ted Nelson’s (1981) vision of literature, broadly understood as “an ongoing system of interconnecting documents,” the Knowledge Base is collecting and connecting bibliographic information and archival materials about the literary production in this field. As this information is linked and cross-referenced in various records in the Knowledge Base, the relations between objects and actors in the field of electronic literature become explicit, perceptible, recognizable, and communicable. Together these relations comprise the field. In the Knowledge Base, they are defined through content types that include authors, creative works, critical writing, events, organizations, publishers, teaching resources, and databases and archives. The Knowledge Base now includes more than 9,000 cross-referenced records in these primary content types.publishedVersio

Discrete Nonlinear Schrodinger Equations with arbitrarily high order nonlinearities

A class of discrete nonlinear Schrodinger equations with arbitrarily high order nonlinearities is introduced. These equations are derived from the same Hamiltonian using different Poisson brackets and include as particular cases the saturable discrete nonlinear Schrodinger equation and the Ablowitz-Ladik equation. As a common property, these equations possess three kinds of exact analytical stationary solutions for which the Peierls-Nabarro barrier is zero. Several properties of these solutions, including stability, discrete breathers and moving solutions, are investigated

G02-1466 Determining the Need to Fertilize Landscape Trees and Shrubs (Revised March 2004)

Most Nebraska soils are fertile enough to support tree and shrub growth without applying fertilizer. However, when woody plants exhibit poor growth or reduced vigor, yet have had adequate moisture and are not experiencing pest problems or other environmental limitations, the proper applicatin of fertilizer may be necessary. This NebGuide explains how to determine if fertilization of established trees and shrubs is required and how to apply the needed amount

Positive Effects of Negative Publicity: When Negative Reviews Increase Sales

Can negative information about a product increase sales, and if so, when? Although popular wisdom suggests that “any publicity is good publicity,” prior research has demonstrated only downsides to negative press. Negative reviews or word of mouth, for example, have been found to hurt product evaluation and sales. Using a combination of econometric analysis and experimental methods, we unify these perspectives to delineate contexts under which negative publicity about a product will have positive versus negative effects. Specifically, we argue that negative publicity can increase purchase likelihood and sales by increasing product awareness. Consequently, negative publicity should have differential effects on established versus unknown products. Three studies support this perspective. Whereas a negative review in the New York Times hurt sales of books by well-known authors, for example, it increased sales of books that had lower prior awareness. The studies further underscore the importance of a gap between publicity and purchase occasion and the mediating role of increased awareness in these effects

Track angle error (TAE) displays and their effect on pilot perforamnce during instrument approaches

Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1997.Includes bibliographical references (p. 245).by Scott Andrew Mody Rasmussen.M.S