4,106 research outputs found
Le carte di Gian Carlo Di Negro
No full textRegesto e commento delle carte manoscritte di Gio. Carlo Di Negro nel contesto storico-culturale primo-ottocentesco
Auto-SEIA: Simultaneous optimization of image processing and machine learning algorithms
No full textObject classification from images is an important task for machine vision and it is a crucial ingredient for many computer vision applications, ranging from security and surveillance to marketing. Image based object classification techniques properly integrate image processing and machine learning (i.e., classification) procedures. In this paper we present a system for automatic simultaneous optimization of algorithms and parameters for object classification from images. More specifically, the proposed system is able to process a dataset of labelled images and to return a best configuration of image processing and classification algorithms and of their parameters with respect to the accuracy of classification. Experiments with real public datasets are used to demonstrate the effectiveness of the developed system
An assessment of the impact of possible CAP reform scenarios on Romanian agriculture
No full textUsing a simplified model, with key-variable the prices of two different possible scenarios of CAP reform after 2013 (moderate and radical), this paper present a comparison between the price effects of implementation of each reform scenario at 2015 horizon on Romanian agriculture. This short analysis shows that, under the presented hypotheses, the net welfare effect, due to the price changes, for the selected products, is positive in both reform scenarios, yet greater in the case of the radical reform. Integrated in the large context of Romanian development, it seems that the influence of CAP reform upon agriculture and rural areas will be most likely a gradual one: an interpenetration between the two scenarios is foreseeable, starting with the moderate reform that will dominate the period around 2013, the reform measures acquiring a more radical character afterwards.CAP reform, Romania, welfare effects, Agricultural and Food Policy,
Rich, Sturmian, and trapezoidal words
No full textIn this paper we explore various interconnections between rich words, Sturmian words, and trapezoidal words. Rich words, first introduced by the second and third authors together with J. Justin and S. Widmer, constitute a new class of finite and infinite words characterized by having the maximal number of palindromic factors. Every finite Sturmian word is rich, but not conversely. Trapezoidal words were first introduced by the first author in studying the behavior of the subword complexity of finite Sturmian words. Unfortunately this property does not characterize finite Sturmian words. In this note we show that the only trapezoidal palindromes are Sturmian. More generally we show that Sturmian palindromes can be characterized either in terms of their subword complexity (the trapezoidal property) or in terms of their palindromic complexity. We also obtain a similar characterization of rich palindromes in terms of a relation between palindromic complexity and subword complexity
VolGIS: a new volcano-oriented GIS for multidisciplinary volcano analysis.
No full textFil: Guardo, Roberto Antonino. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro; Argentina.Fil: De Siena, Luca. University of Aberdeen. Aberdeen; ScotlandFil: Colubri, Andrés. Universidad de Harvard. Massachusetts; EE.UUFil: Dreidemie, Carola. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro; Argentina.An open-source volcano oriented-GIS that offers the possibility to analyze, model and visualice different volcano-related available data in a user-friendly high-resolution visualization environmen
Sport and Games from Philosophy to the Ethics of Sport
No full textVery often, the reaction to the many scandals that periodically rock the world of sport is simply to make urgent demands to develop a healthy sports culture. If this is the aim, I shall try to outline what the sphere of ethics and philosophy might contribute to the debate.
The ethics of sport, or sport ethics, is a discipline that on the one hand, tries to highlight the values sport specifically promotes and encourages, and on the other, explores a series of particular situations where the contrast between what sport should be and what it in fact is appears clearer. Any discussion about the strictly moral nature of sporting activity must necessarily take as its starting point the definition of sport itself. To be able to say that it is morally wrong to deliberately break the rules of a game, to fail to accept a referee’s decision, or to make use of various technological aids or drugs, one must first have a clear understanding of what is meant by the concept of a game (and sport) and why these behaviors are incompatible with this activity
Space-weighted seismic attenuation multi-frequency tomography at Deception Island volcano (Antartica)
No full textFil: Guardo, Roberto Antonino. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro; Argentina.Fil: De Siena, Luca. Johannes Gutenberg University. Mainz; GermanyFil: Caselli, Tomás Alberto. Universidad Nacional de Río Negro, Instituto de Investigación en Paleobiología y Geología, Río Negro, Argentina.Fil: Prudencio, Janire. Departamento Física Teórica y del Cosmos - Área Física de la Tierra, Universidad de Granada, Granada; SpainFil: Ventura, Guido. Istituto Nazionale di Geofisica e Vulcanologia (INGV), Roma; Italy.Improve our understanding of volcanoes using seismic tomography techniques
Enhancement of Molecular Fluorescence in the UV Spectral Range Using Aluminum Nanoantennas
No full textWe investigate the fluorescence rate of a dipolar emitter coupled to Al nanoparticles of varying shapes and sizes and to dimer nanoantennas in the deep-ultraviolet (UV) spectral range, using the surface integral equation method. In particular, we show that the shape of the Al nanostructures plays a fundamental role in controlling the complex interplay between the excitation rate and the quantum yield in radiative plasmonic systems. In addition, we also investigate the role of the near-field interaction of two coupled Al nanoparticles in enhancing the fluorescence rate of the dipole. This study is important for the engineering of more efficient light-emitting nanostructures in the UV spectral range, such as Al-based material systems or light-emitting fluorophores for biodetection
Cloaking of arbitrarily shaped objects with homogeneous coatings
No full textWe present a theory for the cloaking of arbitrarily shaped objects and demonstrate electromagnetic scattering cancellation through designed homogeneous coatings. First, in the small-particle limit, we expand the dipole moment of a coated object in terms of its resonant modes. By zeroing the numerator of the resulting rational function, we accurately predict the permittivity values of the coating layer that abates the total scattered power. Then, we extend the applicability of the method beyond the small-particle limit, deriving the radiation corrections of the scattering-cancellation permittivity within a perturbation approach. Our method permits the design of invisibility cloaks for irregularly shaped devices such as complex sensors and detectors
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