1,721,182 research outputs found
Naturalization record of Gonzalez, Ramon
No full textThe naturalization certificate for William L. Ligat of Scotland. Signed by Judge Joseph B. Wall
Hairy black holes and the endpoint of AdS<sub>4</sub> charged superradiance
No full textWe construct hairy black hole solutions that merge with the anti-de Sitter (AdS4) Reissner-Nordström black hole at the onset of superradiance. These hairy black holes have, for a given mass and charge, higher entropy than the corresponding AdS4-Reissner-Nordström black hole. Therefore, they are natural candidates for the endpoint of the charged superradiant instability. On the other hand, hairy black holes never dominate the canonical and grand-canonical ensembles. The zero-horizon radius of the hairy black holes is a soliton (i.e. a boson star under a gauge transformation). We construct our solutions perturbatively, for small mass and charge, so that the properties of hairy black holes can be used to testify and compare with the endpoint of initial value simulations. We further discuss the near-horizon scalar condensation instability which is also present in global AdS4-Reissner-Nordström black holes. We highlight the different nature of the near-horizon and superradiant instabilities and that hairy black holes ultimately exist because of the non-linear instability of AdS
Apothicaires roussillonnais des XVIe-XVIIIe siècles : Jordi Gonzalez Ramon, « Notas sueltas sobre boticarios y farmacéuticos a ambos lados de los Pirineos (1344-1831) » in Buttl. Soc. Amics Hist. i Ciència Farm. Catalana, 6, n° 15, 1997
No full textJulien Pierre. Apothicaires roussillonnais des XVIe-XVIIIe siècles : Jordi Gonzalez Ramon, « Notas sueltas sobre boticarios y farmacéuticos a ambos lados de los Pirineos (1344-1831) » in Buttl. Soc. Amics Hist. i Ciència Farm. Catalana, 6, n° 15, 1997. In: Revue d'histoire de la pharmacie, 86ᵉ année, n°317, 1998. p. 122
Apothicaires roussillonnais des XVIe-XVIIIe siècles : Jordi Gonzalez Ramon, « Notas sueltas sobre boticarios y farmacéuticos a ambos lados de los Pirineos (1344-1831) » in Buttl. Soc. Amics Hist. i Ciència Farm. Catalana, 6, n° 15, 1997
No full textJulien Pierre. Apothicaires roussillonnais des XVIe-XVIIIe siècles : Jordi Gonzalez Ramon, « Notas sueltas sobre boticarios y farmacéuticos a ambos lados de los Pirineos (1344-1831) » in Buttl. Soc. Amics Hist. i Ciència Farm. Catalana, 6, n° 15, 1997. In: Revue d'histoire de la pharmacie, 86ᵉ année, n°317, 1998. p. 122
Boson stars and solitons confined in a Minkowski box
No full textWe consider the static charged black hole bomb system, originally designed for a (uncharged) rotating superradiant system by Press and Teukolsky. A charged scalar field confined in a Minkowski cavity with a Maxwell gauge field has a quantized spectrum of normal modes that can fit inside the box. Back-reacting non-linearly these normal modes, we find the hairy solitons, a.k.a boson stars (depending on the chosen U(1) gauge), of the theory. The scalar condensate is totally confined inside the box and, outside it, we have the Reissner-Nordström solution. The Israel junction conditions at the box surface layer determine the stress tensor that the box must have to confine the scalar hair. Some of these horizonless hairy solutions exist for any value of the scalar field charge and not only above the natural critical charges of the theory (namely, the critical charges for the onset of the near-horizon and superradiant instabilities of the Reissner-Nordström black hole). However, the ground state solutions have a non-trivial intricate phase diagram with a main and a secondary family of solitons (some with a Chandrasekhar mass limit but others without) and there are a third and a fourth critical scalar field charges where the soliton spectra changes radically. Most of these intricate properties are not captured by a higher order perturbative analysis of the problem where we simply back-react a normal mode of the system.<br/
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Gonzalez, Ramon
No full textCentro Asturiano membership record of Ramon Gonzalez; Socio Number: 55306.https://digitalcommons.usf.edu/asturiano_membership/3254/thumbnail.jp
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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