Search results for "reconstruction"
showing 10 items of 784 documents
Rational vs historical reconstructions. A note on Blaug
2003
The paper focuses on Blaug's distinction between rational and historical reconstruction within the historiography of economics. Blaug's distinction is shown to be sterile and misleading and his definitions of no avail to clear thinking. Historical reconstruction (as defined by Blaug) is en empty box for reasons which are basically theoretical and not simply practical (as Blaug seems to hold). Moreover, Blaug's primary polemical target is Whig historiography and not rational reconstruction: the two concepts coincide only by means of an ad hoc definition. Blaug's criticism does not apply to other uses of the concept of rational reconstruction such as that proposed by Lakatos.
Il terremoto del 1542 in Val di Noto: i casi di Lentini e Siracusa, dalla gestione dell'emergenza al rinnovamento urbano
2012
All’interno del più generale quadro delle distruzioni e ricostruzioni di interi centri urbani o significative parti degli stessi conseguente al terremoto che nel 1542 colpì violentemente il Val di Noto, questo contributo analizza due casi studio di particolare interesse e chiaramente esemplificativi delle problematiche in campo, nonché delle strategie e modalità di intervento e dei processi di rinnovamento attivati dall’evento distruttivo. Nel caso di Lentini, le vicende conseguenti al terremoto agevolano la formulazione di un progetto di ricostruzione dell’intera città in altro sito che avrebbe soddisfatto anche esigenze di natura difensiva. Le opposizioni incontrate a livello locale fanno…
Event reconstruction algorithms for the ATLAS trigger
2007
The ATLAS experiment under construction at CERN is due to begin operation at the end of 2007. The detector will record the results of proton-proton collisions at a centerof- mass energy of 14 TeV. The trigger is a three-tier system designed to identify in real-time potentially interesting events that are then saved for detailed offline analysis. The trigger system will select approximately 200 Hz of potentially interesting events out of the 40 MHz bunch-crossing rate (with 109 interactions per second at the nominal luminosity). Algorithms used in the trigger system to identify different event features of interest will be described, as well as their expected performance in terms of selection…
<em>L’entramès de Mestre Vicent</em>: resplandor de la autoridad del predicador
2019
El presente artículo aborda múltiples aspectos, algunos inéditos, referentes a l’entramès de Mestre Vicent. Entre los objetivos del estudio descuella la reconstrucción virtual y documentada de aquel carro que, quizá albergando la primera representación de Vicent Ferrer, desfiló en Valencia a finales de 1414 con ocasión de la entrada real de Fernando I. Otras cuestiones de especial relevancia atañen a la autoría del programa iconográfico y al proselitismo que denotaba aquella estructura, cuyos máximos beneficiarios fueron el Trastámara y la propia ciudad. Metodológicamente, se subraya la complejidad que entraña ceñir la interpretación del entremés amparada exclusivamente en la literatura, má…
El dilema de la lechuza ¿Qué relación debe tener la filosofía con su historia?
2020
Resumen La historia parece tener una importancia especial en el campo de la filosofía, en pocas disciplinas encontramos tantas referencias a los autores y problemas del pasado. Sin embargo, esto puede ser una simple cuestión de hecho: hasta ahora hemos creído que enseñar la historia de la filosofía era formativo para los futuros filósofos, pero tal creencia puede cambiar. También podría ser una cuestión de puro interés profesional: algunos estudiamos la historia de la disciplina, y tratamos de justificar esa dedicación alegando que ésta puede ser útil, en cierta medida, para los pensadores contemporáneos. En este artículo, sin embargo, abogaré por una comprensión de nuestra historia como al…
Organic lacustrine sediment varves as indicators of past precipitation changes: a 3,000-year climate record from Central Finland
2015
Annually laminated (varved) sediments from Lake Kallio-Kourujärvi, Central Finland, provide high-resolution sedimentological data for the last three millennia. These varves consist of two laminae that represent (1) deposition during the spring-to-autumn growing season, composed of degraded organic matter and a variety of microfossils, and (2) deposition during winter, composed of fine-grained homogenous organic matter. Because of the absence of a clastic lamina, these varves differ from the typical, well-described, clastic-organic varve sequences in Fennoscandian lakes. Such organic varves in Finnish lakes have not been studied in detail before. Three thousand varves were counted and their …
Un'ipotesi per la cattedrale di Iglesias
2015
This article focuses on the 3D virtual reconstruction of the first restoration project of the cathedral of San Maria in Iglesias (first half of 16th century). A complex work of renovation of the old medieval temple, which likely was meant to radically transform the presbytery of the church and to replace the previous timber roof truss of the nave with a simple ribbed vaults, as several clues seem to suggest. In the absence of archival data, the virtual reconstruction allowed to verify some hypotheses originated from the observation of material traces, ascribable to the construction phase of the building here analysed. Indirect proofs seem to suggest that a collapse, happened in an unspecifi…
HDR image generation from LDR image with highlight removal
2015
The emergency of High Dynamic Range (HDR) display device impels the study of generating HDR image from Low Dynamic Range (LDR) image. Most existing generation methods apply complicated handing to highlight areas in image, which perplexes the algorithm and introduces the probability of generating artifacts. In this paper, we investigate a separated scheme: instead of sophisticated treatment to the highlight areas during expanding, the processing to the highlight areas is separated from the dynamic range expansion, which facilitates the framework and reduces the artifacts. The image quality metric shows that the separated scheme reveals more details with little artifacts compared to the algor…
Multifacet structure of observed reconstructed integral images.
2005
Three-dimensional images generated by an integral imaging system suffer from degradations in the form of grid of multiple facets. This multifacet structure breaks the continuity of the observed image and therefore reduces its visual quality. We perform an analysis of this effect and present the guidelines in the design of lenslet imaging parameters for optimization of viewing conditions with respect to the multifacet degradation. We consider the optimization of the system in terms of field of view, observer position and pupil function, lenslet parameters, and type of reconstruction. Numerical tests are presented to verify the theoretical analysis.
Emission tomography with a large-hole collimator (CACAO): a possible new way to improve radionuclide imaging.
2002
This work aims to improve the quality of scintigraphy. It evaluates the use of a large-hole collimator, the Computer Aided Collimation Gamma Camera Project (CACAO), in SPECT. Acquisition data from the same object were simulated for CACAO and for a conventional collimator. Better signal-to-noise ratios were found for CACAO images, whatever the number of emitted photons. This work demonstrates that high-resolution images may be obtained with large-hole collimators. The combination of CACAO and pixilated detectors may further improve radionuclide imaging.