4,696 research outputs found
The medieval ‘scientia' of structures: the rules of Rodrigo Gil de Hontañón
No full textMedieval builders didn't have a scientific structural theory, however gothic cathedrals were not build without a theory. Gothic masters had a ‘scientia', a body of knowledge which permitted the safe design of their buildings. The nature of this theory has not only a historical or erudite interest; perhaps something could be learned from the true masters of masonry architecture.
Literary sources from the gothic period are scarce; in almost all we find structural rules to design the principal structural elements: walls, vaults (ribs and keystones) and, above all, buttresses. These rules (arithmetical or geometrical) conduced in most cases to a certain proportions independently of size, to geometrically similar designs (for example, the depth of a buttress is a fraction of the span). Very rarely, and this is the case with Rodrigo Gil, appeared arithmetical rules which lead to non-proportional designs (following Rodrigo's rule the buttresses become more slender in relation to the span as the size increases).
These rules were a means to register stable forms. Proportional rules are, as has pointed Professor Heyman, essentially correct. It is a problem of stability and not of strength. Non-proportional rules express a finer adjustment to some non-proportional design problems: buttress design for the thin domical cross vaults (bóvedas baídas), boss design for the vaults themselves, and wall design for towers. The rules were deduced empirically, give correct dimensions, but above all draw our attention to some significant facts of design which so far have remained unnoticed
[Reseña] Gutiérrez Viñuales, Rodrigo, "Libros argentinos, ilustración y modernidad (1910-1936)"
No full textEs una reseña de la obra: Gutiérrez Viñuales, Rodrigo, "Libros argentinos, ilustración y modernidad (1910-1936)." Buenos Aires, CEDODAL, 2014, 450 páginas.It's a review of the work: Gutierrez Viñuales, Rodrigo, "Libros argentinos, ilustración y modernidad (1910-1936)." CEDODAL Buenos Aires", 2014, 450 pages.peerReviewe
Reseña al libro de Rodrigo Gordoa de la Huerta. La Contaduría General de Alcabalas. Una oficina y tribunal del real erario novohispano (1677-1756). México, Instituto Mora, 2021.
No full textBook review of Rodrigo Gordoa de la Huerta "La Contaduría Genera de Alcabalas", edited by Instituto Mora in 2021.Reseña del libro de Rodrigo Gordoa de la Huerta "La Contaduría General de Alcabalas", editado por el Instituto Mora en 2021
Título: El Arzobispo D. Rodrigo Ximénez de Rada y el Monasterio de Santa María de Huerta
No full textCopia digital. Valladolid : Junta de Castilla y León. Consejería de Cultura y Turismo, 2009-2010Contiene: El Arzobispo D. Rodrigo Ximénez de Rada y el Monasterio de Santa María de Huerta / [Enrique de Aguilera y Gamboa, Marqués de Cerralbo]. Contestación / del Sr. Juan Catalina Garcí
["Armorial de José Ignacio Rodríguez de Mendoza"] [Manuscrito].
No full textManuscrito fechado en 1779Tít. facticioIncipit: Don Ramón Zazo y Ortega chronista y rey de armas... certifico que por parte de Don Joseph Ignacio Rodríguez de Mendoza, García Valencia... se me ha hecho constar ser hijo lexítimo de Don Ignacio Joseph Rodríguez de Mendoza y Doña Vizenta García Valencia...Escudos y letras capitales miniadasSellos de placaFirmas autógrafas de los escribanos Rodrigo González de Castro y Felipe López de la Huerta, entre otrosDigitalización Vitoria-Gasteiz Archivos y Bibliotecas Febrero 1996 17-92Digitalización Vitoria-Gasteiz Fundación Sancho el Sabio 2009Pie
Reseña del libro de: Gomes, Christianne L. y Elizalde, Rodrigo, Horizontes latino-americanos do lazer/ Horizontes latinoamericanos del ocio
No full textGomes, Christianne L. y Elizalde, Rodrigo, Horizontes latino-americanos do lazer/ Horizontes latinoamericanos del oci
La obra po\ue9tica de Ricardo de Santa Mar\ueda de Huerta en honor de San Mart\uedn de Finojosa y de Rodrigo Jim\ue9nez de Rada
No full textEste art\uedculo ofrece la primera edici\uf3n cr\uedtica de los poemas de Ri-cardo, un monje cisterciense del cenobio de Santa Mar\ueda de Huerta, en honor de Mart\uedn de Finojosa, abad de Huerta y obispo de Sig\ufcenza, y del arzobispo toledano Rodrigo Jim\ue9nez de Rada: una vida en verso y un epitafio, en ambos casos. El trabajo incluye tambi\ue9n el an\ue1lisis m\ue9trico de los poemas, compuestos en hex\ue1metros cuantitativos y versos leoninos, las fuentes de \ue9stos, la lista de los manuscritos conocidos y una traducci\uf3n de todos ellos
Using Brain Oscillations and Corticospinal Excitability to Understand and Predict Post-Stroke Motor Function
No full textWhat determines motor recovery in stroke is still unknown and finding markers that could predict and improve stroke recovery is a challenge. In this study, we aimed at understanding the neural mechanisms of motor function recovery after stroke using neurophysiological markers by means of cortical excitability (transcranial magnetic stimulation—TMS) and brain oscillations (electroencephalography—EEG). In this cross-sectional study, 55 subjects with chronic stroke (62 ± 14 yo, 17 women, 32 ± 42 months post-stroke) were recruited in two sites. We analyzed TMS measures (i.e., motor threshold—MT—of the affected and unaffected sides) and EEG variables (i.e., power spectrum in different frequency bands and different brain regions of the affected and unaffected hemispheres) and their correlation with motor impairment as measured by Fugl-Meyer. Multiple univariate and multivariate linear regression analyses were performed to identify the predictors of good motor function. A significant interaction effect of MT in the affected hemisphere and power in beta bandwidth over the central region for both affected and unaffected hemispheres was found. We identified that motor function positively correlates with beta rhythm over the central region of the unaffected hemisphere, while it negatively correlates with beta rhythm in the affected hemisphere. Our results suggest that cortical activity in the affected and unaffected hemisphere measured by EEG provides new insights on the association between high-frequency rhythms and motor impairment, highlighting the role of an excess of beta in the affected central cortical region in poor motor function in stroke recovery
["Armorial de José Ignacio Rodríguez de Mendoza"] [Manuscrito].]
No full textManuscrito fechado en 1779Tít. facticioIncipit: Don Ramón Zazo y Ortega chronista y rey de armas... certifico que por parte de Don Joseph Ignacio Rodríguez de Mendoza, García Valencia... se me ha hecho constar ser hijo lexítimo de Don Ignacio Joseph Rodríguez de Mendoza y Doña Vizenta García Valencia...Escudos y letras capitales miniadasSellos de placaFirmas autógrafas de los escribanos Rodrigo González de Castro y Felipe López de la Huerta, entre otrosDigitalización. Vitoria-Gasteiz : Archivos y Bibliotecas, Febrero 1996Pie
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