2,021,687 research outputs found
1993-1994 T. R. Pearson
No full textT. R. Pearson, a.k.a. Rick Gavin, was born in Winston-Salem, North Carolina. He was a student at North Carolina State University, where he gained a B.A. and M.A. in English. He was the first recipient of the John and Renée Grisham Writer in Residence Fellowship. He is the acclaimed author of fourteen novels, including A Short History of a Small Place and Warwolf, and a dozen screenplays. Top of the Rock is his fifth nonfiction book. He lives in Virginia and Brooklyn, New York. (Photo credit: Marian Young)https://egrove.olemiss.edu/grisham_res/1026/thumbnail.jp
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Letter from J. R. Eakin to Carl Hayden
No full textLetter from J. R. Eakin to Carl T. Hayden concerning access to Rowe Well and the canyon
Letter from J. R. Eakin to Stephen Mather
No full textLetter from J. R. Eakin to Stephen T. Mather about expenses and reconstruction of the Kaibab Trail
Letter from Carl Hayden to J. R. Eakin
No full textLetter from Carl T. Hayden to J. R. Eakin regarding changes to the Grand Canyon National Park boundaries and the purchase of lands from William Randolph Hearst
Letter from F. R. Goodman to Carl Hayden
No full textLetter from F. R. Goodman to Carl T. Hayden asking for clarification about the agreement to construct an approach road to the par
Letter from Carl Hayden to F. R. Goodman
No full textLetter from Carl T. Hayden to F. R. Goodman concerning the purchase of Bright Angel Trail and construction of an approach road to the park
R-boundedness of smooth operator-valued functions
No full textIn this paper we study -boundedness of operator families \mathcal{T}\subset \calL(X,Y), where and are Banach spaces. Under cotype and type assumptions on and we give sufficient conditions for -boundedness. In the first part we show that certain integral operator are -bounded. This will be used to obtain -boundedness in the case that is the range of an operator-valued function T:\R^d\to \calL(X,Y) which is in a certain Besov space B^{d/r}_{r,1}(\R^d;\calL(X,Y)). The results will be applied to obtain -boundedness of semigroups and evolution families, and to obtain sufficient conditions for existence of solutions for stochastic Cauchy problems.Electrical Engineering, Mathematics and Computer Scienc
f(R,T)=f(R)+λT gravity models as alternatives to cosmic acceleration
No full textAbstract This article presents cosmological models that arise in a subclass of f(R,T)=f(R)+f(T) gravity models, with different f(R) functions and fixed T-dependence. That is, the gravitational lagrangian is considered as f(R,T)=f(R)+λT , with constant λ . Here R and T represent the Ricci scalar and trace of the stress-energy tensor, respectively. The modified gravitational field equations are obtained through the metric formalism for the Friedmann–Lemaître–Robertson–Walker metric with signature (+,-,-,-) . We work with f(R)=R+αR2-μ4R , f(R)=R+kln(γR) and f(R)=R+me[-nR] , with α,μ,k,γ,m and n all free parameters, which lead to three different cosmological models for our Universe. For the choice of λ=0 , this reduces to widely discussed f(R) gravity models. This manuscript clearly describes the effects of adding the trace of the energy-momentum tensor in the f(R) lagrangian. The exact solution of the modified field equations are obtained under the hybrid expansion law. Also we present the Om diagnostic analysis for the discussed models
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