137,618 research outputs found
On Rastall gravity formulation as a and a theory
No full textRastall introduced a stress-energy tensor whose divergence is proportional to
the gradient of the Ricci scalar. This proposal leads to a change in the form
of the field equations of General Relativity, but it preserves the number of
degrees of freedom. Rastall's field equations can be either interpreted as GR
with a redefined SET, or it can imply different physical consequences inside
the matter sector. We investigate limits under which the Rastall field
equations can be directly derived from an action, in particular from two
-gravity extensions: and . We show that there
are similarities between these theories, but the Rastall SET cannot be fully
recovered from them, apart from certain particular cases here discussed. It is
remarkable that a simple, covariant and invertible redefinition of the SET, as
the one proposed by Rastall, is hard to be directly implemented in the action.Comment: 11 pages, accepted for publication in the European Physical Journal
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Data sets for "MELISSA: System description and spectral features of pre‐ and post‐midnight F‐region echoes. Journal of Geophysical Research: Space Physics" by Rodrigues et al.
No full textObservations used in the study "Rodrigues, F. S., Zhan, W., Milla, M. A., Fejer, B. G., de Paula, E. R., Neto, A. C., et al ( 2019). MELISSA: System description and spectral features of pre‐ and post‐midnight F‐region echoes. Journal of Geophysical Research: Space Physics, 124. https://doi.org/10.1029/2019JA027445."
The uploaded files include the RTI maps measured by the MELISSA radar system between 2014 and 2018 (.tif files). They also include values of SNR versus local time and height and the spectra presented in the manuscript (.mat files).
Please, see README.txt for additional details.</p
John F. Kennedy telegram to Roosevelt
No full textJersey Homesteads (later the Borough of Roosevelt) was established in the 1930s as an agro-industrial cooperative community. It was established specifically for urban Jewish garment workers, many of whom had emigrated from Europe. President John F. Kennedy sent a telegram to the citizens of Roosevelt, New Jersey, apologizing for not being able to attend the memorial dedication in honor of former President Franklin Delano Roosevelt. (Jersey Homesteads became Roosevelt in 1945 in honor of the president.) President Kennedy expressed his gratitude to the people of Roosevelt for constructing the memorial, and commented that it will serve as a constant reminder of Roosevelt's good works
Paravelia bilobata Rodrigues 2014
No full textParavelia bilobata Rodrigues et al., 2014 Paravelia bilobata Rodrigues, Moreira, Nieser, Chen & Melo in Rodrigues et al., 2014b: 8-10, figs. 4, 6A-F, 21. Paratype: 1 macropterous ♂, glued to pinned paper with abdominal segment VIII and genitalia in microvial; Brasil, Mato Grosso, Nova Xavantina, Córrego da Mata, fourth order, 15°01′32″S, 52°26′29″W, 17.XI.2005, 1788, H.S. R. Cabette et al .Published as part of Carrenho, Renan, Rodrigues, Higor D. D., Lima, Adriana Carneiro de & Schwertner, Cristiano F., 2020, Type specimens of true bugs (Hemiptera: Heteroptera) housed in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-16 in Papéis Avulsos de Zoologia 60 on page 7, DOI: 10.11606/1807-0205/2020.60.17, http://zenodo.org/record/461488
Sous-facteurs de L(F∞) d'indice 4cos2π/n,n≥3
No full textLet Q be a factor of type II1, λ a number in the Jones discrete series {4cosπ/m:m≥3}, and {ei} the Jones projections associated with λ. Denote by A2n and A1n the finite-dimensional von Neumann algebras generated, respectively, by {1,e2,⋯,en} and {1,e1,⋯,en}, with the corresponding traces. The author shows that, for n sufficiently large, the index of the inclusion An=(Q⊗A2n)∗A2nA1n⊂(Q⊗A2n+1)∗A2n+1A1n+1=An+1 is equal to λ (here ∗ denotes the reduced, amalgamated free product of the algebras in question). Using the random matrix model of Voiculescu, he proves that if Q is the von Neumann algebra L(F∞) of the free group with infinitely many generators, then An is isomorphic to L(F∞).
The two facts together imply the existence, for any λ in the Jones discrete series, of an irreducible subfactor of L(F∞) of index λ. This constitutes the first example of a nonhyperfinite, non-Γ II1 factor such that its Jones invariant is fully computable (the existence of nonirreducible subfactors of L(F∞) for any index ≥4 is a simple consequence of known results)
Paravelia lacrymosa Rodrigues 2014
No full textParavelia lacrymosa Rodrigues et al., 2014 Paravelia lacrymosa Rodrigues, Moreira, Nieser, Chen & Melo in Rodrigues et al., 2014b: 14-15, figs. 7, 9A, 21. Holotype: Macropterous ♀, glued to pinned paper; Brasil, MG [Minas Gerais], Serra [do] Caraça, 1380 m, XI.[1]961, Kloss, Lenko, Martins & Silva col.Published as part of Carrenho, Renan, Rodrigues, Higor D. D., Lima, Adriana Carneiro de & Schwertner, Cristiano F., 2020, Type specimens of true bugs (Hemiptera: Heteroptera) housed in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-16 in Papéis Avulsos de Zoologia 60 on page 8, DOI: 10.11606/1807-0205/2020.60.17, http://zenodo.org/record/461488
Fabulas do gol : as cronicas esportivas de Nelson Rodrigues
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e ExpressãoO primeiro volume reúne a série completa das crônicas esportivas que Nelson Rodrigues publicou na revista Manchete Esportiva entre novembro de 1955 e maio de 1959, somando 156 artigos, dos quais 99 são inéditos em livro. O segundo volume inicia uma leitura dessas crônicas a partir de pressupostos teóricos de Mikhail Bakhtin, utilzando dele conceitos como cronotopo, dialogismo e carnavalização. A leitura aborda a importância dessas crônicas na conformação da imagem do seu autor e na compreensão de sua riqueza estilística, considerando-as como território em que duas representações - esporte e narrativa - se articulam
The Ansayrii, and the assassins with travels in the futher east, in 1850-51, including a visit to Nineveh. By Lieut. the Hon. F. Walpole, R.N. Author of four Years in the Pacific" in three volumes. London Richard Bentley, New Burlington street, publisher
No full textPreface: by Walpole, F.Dedication: by Walpole, F. to Eliot WarburtonContent description: Detailed contentsIllustration: (Views ,varia ,)Pagination: PP15+402P, PP11+378P, PP8+458PVolumes: 3Text Genre:ProseIllustration: (τοπία ,άλλα θέματα ,
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