35,012 research outputs found
A C++-embedded Domain-Specific Language for programming the MORA soft processor array
No full textMORA is a novel platform for high-level FPGA programming of streaming vector and matrix operations, aimed at multimedia applications. It consists of soft array of pipelined low-complexity SIMD processors-in-memory (PIM). We present a Domain-Specific Language (DSL) for high-level programming of the MORA soft processor array. The DSL is embedded in C++, providing designers with a familiar language framework and the ability to compile designs using a standard compiler for functional testing before generating the FPGA bitstream using the MORA toolchain. The paper discusses the MORA-C++ DSL and the compilation route into the assembly for the MORA machine and provides examples to illustrate the programming model and performance
Numerical simulation of short laser pulse relativistic self-focusing in underdense plasma
No full textExisting experimental results on relativistic self-focusing are interpreted by means of the particle code WAKE using the ponderomotive approximation to describe the laser-plasma interaction [P. Mora and T. M. Antonsen, Jr., Phys. Plasmas 4, 217 (1997)]. Novel features of the code, such as gas medium ionization and an enhanced paraxial approximation, allow more confidence in data interpretation. Simulations where the pulse power is less or close to the critical value match the experimental data. The transmitted pulse spectrum is shown in this case to shift towards longer wavelengths. The pulse is shown to focus over the vacuum diffraction limit, while the energy is slowly depleted. Simulations of pulses above the critical power match experiment with reduced precision. This can be ascribed to beam filamentation. High energy depletion is expected in this case due to Raman instability. © 1998 American Institute of Physics
Casa en un acantilado
No full textSilvestre Navarro, FM.; Sáez-Domingo, MJ.; Martínez-Ventura, J.; Masià Gómez, M.; Mora, A.; Miguel, JV.; Gallardo Llopis, D.... (2013). Casa en un acantilado. T 18. (11):60-75. https://riunet.upv.es/handle/10251/114247S60751
Nota introduttiva (saggi di Francesco Mora su Simmel)
No full textGeorg Simmel was undoubtedly the author to whom Francesco Mora, throughout his scholarly career, most frequently directed his critical attention. The four essays selected for this volume also testify to the continuity of his work on Simmel, from his debut essay in 1985 to the contributions devoted, more than thirty years later, to "The Meaning of Life and Conflict" (2018) and the expression "Forms of Life" (2018). The Venetian philosopher's hermeneutic objective, which will also be central to the two monographs, and, in particular, to the one on the "Principle of Reciprocity": to trace the apparently eclectic and panoramic nature of Simmelian work back to the common thread of a unitary interpretation
Author response
No full textDetecting pathogens and mounting immune responses upon infection is crucial for animal health. However, these responses come at a high metabolic price (McKean and Lazzaro, 2011, Kominsky et al., 2010), and avoiding pathogens before infection may be advantageous. The bacterial endotoxins lipopolysaccharides (LPS) are important immune system infection cues (Abbas et al., 2014), but it remains unknown whether animals possess sensory mechanisms to detect them prior to infection. Here we show that Drosophila melanogaster display strong aversive responses to LPS and that gustatory neurons expressing Gr66a bitter receptors mediate avoidance of LPS in feeding and egg laying assays. We found the expression of the chemosensory cation channel dTRPA1 in these cells to be necessary and sufficient for LPS avoidance. Furthermore, LPS stimulates Drosophila neurons in a TRPA1-dependent manner and activates exogenous dTRPA1 channels in human cells. Our findings demonstrate that flies detect bacterial endotoxins via a gustatory pathway through TRPA1 activation as conserved molecular mechanism.sponsorship: Vlaams Instituut voor Biotechnologie Alessia Soldano Luis Franco Guangda Liu Natalia Mora Emre Yaksi Bassem A Hassanr Fonds Wetenschappelijk Onderzoek G.0702.12 Alessia Soldano Yeranddy A Alpizar Brett Boonen Alejandro Lopez-Requena Natalia Mora Thomas Voets Rudi Vennekens Bassem A Hassan Karel Talaverar Fonds Wetenschappelijk Onderzoek G.0077.15 Alessia Soldano Yeranddy A Alpizar Brett Boonen Alejandro Lopez-Requena Natalia Mora Thomas Voets Rudi Vennekens Bassem A Hassan Karel Talaverar Fonds Wetenschappelijk Onderzoek G.0680.10 Alessia Soldano Yeranddy A Alpizar Brett Boonen Alejandro Lopez-Requena Natalia Mora Thomas Voets Rudi Vennekens Bassem A Hassan Karel Talaverar Fonds Wetenschappelijk Onderzoek G.0681.10 Alessia Soldano Yeranddy A Alpizar Brett Boonen Alejandro Lopez-Requena Natalia Mora Thomas Voets Rudi Vennekens Bassem A Hassan Karel Talaverar Fonds Wetenschappelijk Onderzoek G.0503.12 Alessia Soldano Yeranddy A Alpizar Brett Boonen Alejandro Lopez-Requena Natalia Mora Thomas Voets Rudi Vennekens Bassem A Hassan Karel Talaverar Fonds Wetenschappelijk Onderzoek G.0654.15 Alessia Soldano Yeranddy A Alpizar Brett Boonen Alejandro Lopez-Requena Natalia Mora Thomas Voets Rudi Vennekens Bassem A Hassan Karel Talaverar Fonds Wetenschappelijk Onderzoek G.0761.10N Alessia Soldano Yeranddy A Alpizar Brett Boonen Alejandro Lopez-Requena Natalia Mora Thomas Voets Rudi Vennekens Bassem A Hassan Karel Talaverar Fonds Wetenschappelijk Onderzoek G.0596.12 Alessia Soldano Yeranddy A Alpizar Brett Boonen Alejandro Lopez-Requena Natalia Mora Thomas Voets Rudi Vennekens Bassem A Hassan Karel Talaverar Fonds Wetenschappelijk Onderzoek G.0565.07 Alessia Soldano Yeranddy A Alpizar Brett Boonen Alejandro Lopez-Requena Natalia Mora Thomas Voets Rudi Vennekens Bassem A Hassan Karel Talaverar KU Leuven GOA/14/011 Alessia Soldano Yeranddy A Alpizar Brett Boonen Luis Franco Alejandro Lopez-Requena Guangda Liu Natalia Mora Emre Yaksi Thomas Voets Rudi Vennekens Bassem A Hassan Karel Talaverar European Commission IUAP P7/13 Alessia Soldano Yeranddy A Alpizar Brett Boonen Luis Franco Alejandro Lopez-Requena Guangda Liu Natalia Mora Emre Yaksi Thomas Voets Rudi Vennekensr KU Leuven OT/12/091 Alessia Soldano Yeranddy A Alpizar Brett Boonen Luis Franco Alejandro Lopez-Requena Guangda Liu Natalia Mora Emre Yaksi Thomas Voets Rudi Vennekens Bassem A Hassan Karel Talaverar KU Leuven PF-TRPLe Alessia Soldano Yeranddy A Alpizar Brett Boonen Luis Franco Alejandro Lopez-Requena Guangda Liu Natalia Mora Emre Yaksi Thomas Voets Rudi Vennekens Bassem A Hassan Karel Talavera (Vlaams Instituut voor Biotechnologie, Fonds Wetenschappelijk Onderzoek|G.0702.12, Fonds Wetenschappelijk Onderzoek|G.0077.15, Fonds Wetenschappelijk Onderzoek|G.0680.10, Fonds Wetenschappelijk Onderzoek|G.0681.10, Fonds Wetenschappelijk Onderzoek|G.0503.12, Fonds Wetenschappelijk Onderzoek|G.0654.15, Fonds Wetenschappelijk Onderzoek|G.0761.10N, Fonds Wetenschappelijk Onderzoek|G.0596.12, KU Leuven|GOA/14/011, KU Leuven|OT/12/091, European Commission|IUAP P7/13, KU Leuven PF-TRPLe)status: Publishe
Toward involutive bases over effective rings
No full textIn this paper we extend the theory of involutive divisions to the case of monomials with coefficients over effective rings. Moreover, as regards involutive bases, we study the computation of weak involutive bases and sketch a conjecture on strong involutive bases
Constructive Lifting in Graded Structures: a unified view of Buchberger and Hensel methods
No full textThis paper discusses a general lifting technique for solving polynomial equations in gradedstructures A, where the solution is understood to lie in the completion A^ of A. It shows that the classical Hensel lifting and the main constructions related to the Buchberger algorithm for Gröbner bases are both instances of this technique. So, while the setting of it is too general to allow for an effective solution of equations, this technique stresses a theoretical relation between two basic algorithms in computer algebra and could be used as a theoretical model to attack computation problems under the same viewpoint
Donna Mora, ca. 1791 [picture] /
No full textTitle devised by cataloguer based on inscription.; In: Costumes turcs et Polynesia.; Inscriptions: "Donna Mora"--Printed lower left below image; "Femme Moresque"--Printed lower right below image; "Apud Theodorum Viero, Venetiis"--Printed lower right corner below image.; Rex Nan Kivell Collection, NK10017.; Condition: Slight foxing, repaired tear on lower right corner.; Plates from: Raccolta di stampe ... di varie nazioni, of which 5 plates are of Pacific subjects.; Also available in an electronic version via the Internet at: http://nla.gov.au/nla.pic-vn4317868
Two-stage index computation for bandits with switching penalties II : switching delays
No full textThis paper addresses the multi-armed bandit problem with switching penalties including both costs and delays, extending results of the companion paper [J. Niño-Mora. "Two-Stage Index Computation for Bandits with Switching Penalties I: Switching Costs". Conditionally accepted at INFORMS J. Comp.], which addressed the no switching delays case. Asawa and Teneketzis (1996) introduced an index for bandits with delays that partly characterizes optimal policies, attaching to each bandit state a "continuation index" (its Gittins index) and a "switching index", yet gave no algorithm for it. This paper presents an efficient, decoupled computation method, which in a first stage computes the continuation index and then, in a second stage, computes the switching index an order of magnitude faster in at most (5/2)+O(n) arithmetic operations for an n -state bandit. The paper exploits the fact that the Asawa and Teneketzis index is the Whittle, or marginal productivity, index of a classic bandit with switching penalties in its semi- Markov restless reformulation, by deploying work-reward analysis and LP-indexability methods introduced by the author. A computational study demonstrates the dramatic runtime savings achieved by the new algorithm, the near-optimality of the index policy, and its substantial gains against a benchmark index policy across a wide instance range.
Low seismic resolution cannot explain S/P decorrelation in the lower mantle
No full textInverted models of the deep mantle show a decorrelation between maps of shear V(S) and compressional V(P) wave velocities, an anti-correlation between the bulk sound velocity V(phi) and V(S) and a much larger variability of V(S) with respect to V(P), expressed by large values of the ratio of their relative lateral variations. We carried out synthetic tests to verify if these features could be artifacts, explained by limits in tomographic resolution: synthetic data are calculated for an "input" model, and linearly inverted, as in tomography, to find an "output" model. Comparing the values of the aforementioned parameters for two different chemically homogeneous input models with the associated reconstructed output ones, we found that artifacts caused by realistic data noise and the nonuniform distribution of seismic sources and stations over the globe are not sufficient to introduce the features previously described. We confirm that compositional effects are required to explain them. Citation: Della Mora, S., L. Boschi, P. J. Tackley, T. Nakagawa, and D. Giardini (2011), Low seismic resolution cannot explain S/P decorrelation in the lower mantle, Geophys. Res. Lett., 38, L12303, doi:10.1029/2011GL047559. RI Giardini, Domenico/F-5406-201
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