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Search Results: 1 - 10 of 401257 matches for " M. Apollonio "
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Oscillation Physics with a Neutrino Factory
M. Apollonio
Physics , 2002,
Abstract: A generation of neutrino experiments have established that neutrinos mix and probably have mass. The mixing phenomenon points to processes beyond those of the Standard Model, possibly at the Grand Unification energy scale. A extensive sequence of of experiments will be required to measure precisely all the parameters of the neutrino mixing matrix, culminating with the discovery and study of leptonic CP violation. As a first step, extensions of conventional pion/kaon decay beams, such as off-axis beams or low-energy super-beams, have been considered. These could yield first observations of $\nu_\mu \to \nu_e$ transitions at the atmospheric frequency, which have not yet been observed, and a first measurement of $\theta_{13}$. Experiments with much better flux control can be envisaged if the neutrinos are obtained from the decays of stored particles. One such possibility is the concept of beta beams provided by the decays of radioactive nuclei, that has been developed within the context of these studies. These would provide a pure (anti-)electron-neutrino beam of a few hundred MeV, and beautiful complementarity with a high-intensity, low-energy conventional beam, enabling experimental probes of T violation as well as CP violation. Ultimately, a definitive and complete set of measurements would offered by a Neutrino Factory based on a muon storage ring. This powerful machine offers the largest reach for CP violation, even for very small values of $\theta_{13}$.
Measurements of forward proton production with incident protons and charged pions on nuclear targets at the CERN Proton Synchroton
M. Apollonio et al.
Physics , 2010, DOI: 10.1103/PhysRevC.82.045208
Abstract: Measurements of the double-differential proton production cross-section in the range of momentum 0.5 GeV/c < p < 8.0 GeV/c and angle 0.05 rad < \theta < 0.25 rad in collisions of charged pions and protons on beryllium, carbon, aluminium, copper, tin, tantalum and lead are presented. The data were taken with the large acceptance HARP detector in the T9 beam line of the CERN Proton Synchrotron. Incident particles were identified by an elaborate system of beam detectors and impinged on a target of 5 % of a nuclear interaction length. The tracking and identification of the produced particles was performed using the forward spectrometer of the HARP experiment. Results are obtained for the double-differential cross-sections mainly at four incident beam momenta (3 GeV/c, 5 GeV/c, 8 GeV/c and 12 GeV/c). Measurements are compared with predictions of the GEANT4 and MARS Monte Carlo generators.
Gli Ungulati in Italia: status, gestione e ricerca scientifica
Marco Apollonio
Hystrix : the Italian Journal of Mammalogy , 2004, DOI: 10.4404/hystrix-15.1-4323
Abstract: Ungulates in Italy: status, management and scientific research Ungulates in Italy have experienced in the last decade a further increase of their distribution and, possibly, consistence. This trend has been very obvious in the central and northern part of Italy, on the contrary, in south Italy the increase of ungulates populations is quite slow if any. A partial exception is Sardinia where Sardinian red deer (Cervus elaphus corsicanus) has been reintroduced into the four provinces of the island. In this frame the relevance of the increase of ungulates for the increase of wolves (Canis lupus) in Italy must be emphasized. Ungulates management has also experienced a general development in the last decade, even if deep differences between south and central-north Italy still persist. Well conducted reintroductions have allowed to fill many gaps in the species distribution. Ungulates hunting bags size, suggest an increased importance of ungulates in the hunting activities in Italy. Selective hunting with rifles on cervids and bovids was established in wide areas of north and central Italy, mainly as consequence of roe deer (Capreolus capreolus) widespread presence. Wild boar (Sus scrofa) hunting still represents a problem for ungulate management in Italy. Almost 50% of the provinces where wild boar is hunted does not collect hunting bag statistics, and only 35% of them try to roughly estimate the consistence of the populations. The traditional dogs hunting of wild boar has expanded to areas where wild boar was recently and illegally reintroduced, as south Italy and the Alps region, and this is a serious problem for the development of a more rational and correct hunting practices. New possibilities of hunting management of red deer in central Italy, and in the future of alpine ibex (Capra ibex), are to be considered. An increase of the presence of trained wildlife managers in public administrations is suggested, as a further step in the development of a proper management of ungulates and other wildlife. Scientific research on ungulates in Italy was, in the last decade, quite uneven both in the species and in the disciplines chosen. There is a clear opportunistic approach to subjects, that often has no link with the real necessities of wildlife management. The development of long term studies is suggested, together with a more efficient coordination among scientist in the choice of the research subjects. Last but not least a more efficient founding mechanisms is needed in order to avoid money waste and to promote serious research programmes. Riassunto Gli Ungula
Stampa ed editoria numismatica
Fulvio Apollonio
Aestimum , 1982,
Rilievo e disegno della città.
Fabrizio Ivan Apollonio
Il disegno di Sabbioneta. Rilievo urbano e immagine della città.
Fabrizio Ivan Apollonio
Minimally unbalanced diamond-free graphs and Dyck-paths
N. Apollonio,A. Galluccio
Computer Science , 2014,
Abstract: A $\{0,1\}$-matrix $\mathsf{A}$ is balanced if it does not contain a submatrix of odd order having exactly two 1's per row and per column. A graph is balanced if its clique-matrix is balanced. No characterization of minimally unbalanced graphs is known, and even no conjecture on the structure of such graphs has been posed, contrarily to what happened for perfect graphs. In this paper, we provide such a characterization for the class of diamond-free graphs and establish a connection between minimally unbalanced diamond-free graphs and Dyck-paths.
On Computing the Galois Lattice of Bipartite Distance Hereditary Graphs
Nicola Apollonio,Paolo Giulio Franciosa
Computer Science , 2015,
Abstract: The class of Bipartite Distance Hereditary (BDH) graphs is the intersection between bipartite domino-free and chordal bipartite graphs.\ Graphs in both the latter classes have linearly many maximal bicliques, implying the existence of polynomial-time algorithms for computing the associated Galois lattice.\ Such a lattice can indeed be built in $O(m\times n)$ worst case-time for a domino-free graph with $m$ edges and $n$ vertices.\ In this paper we give a sharp estimate on the number of the maximal bicliques of BDH graphs and exploit such result to give an $O(m)$ worst case time algorithm for computing the Galois lattice of BDH graphs. By relying on the fact that neighborhoods of vertices of BDH graphs can be realized as directed paths in a arborescence, we give an $O(n)$ worst-case space and time encoding of both the input graph and its Galois lattice, provided that the reverse of a Bandelt and Mulder building sequence is given.
An Over-Moded TEM Cell System for in vivo Exposure at 2.45 GHz  [PDF]
Alessandra Paffi, Caterina Merla, Micaela Liberti, Fabio Fratta, Rosanna Pinto, Giorgio A. Lovisolo, Francesca Apollonio
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2012, DOI: 10.4236/jemaa.2012.49048
Abstract: A TEM cell designed to operate at 900 MHz for exposing small-restrained animals (e.g. mice) has been theoretically, numerically and experimentally characterized at 2.45 GHz, which is the central frequency of the WiFi protocol. This study aims at evaluating the influence of higher order modes on the field homogeneity. The results demonstrate the superimposition of a tolerable standing wave, due to reflections at the cell terminations, and a slight beat wave due to the interference between different modes. Nevertheless, the final outcome is that the system can still be efficiently used to expose small animals in specific WiFi channels, provided they are properly placed in correspondence to the maxima of the electric field along the guide length.
Evidence and argument in policymaking: development of workplace smoking legislation
Dorie E Apollonio, Lisa A Bero
BMC Public Health , 2009, DOI: 10.1186/1471-2458-9-189
Abstract: We conducted a case-study based content analysis of legislative materials used in the development of six state workplace smoking laws, including written and spoken testimony and the text of proposed and passed bills and amendments. We coded testimony given before legislators for arguments used, and identified the institutional affiliations of presenters and their position on the legislation. We compared patterns in the arguments made in testimony to the relative strength of each state's final legislation.Greater discussion of scientific evidence within testimony given was associated with the passage of workplace smoking legislation that provided greater protection for public health, regardless of whether supporters outnumbered opponents or vice versa.Our findings suggest that an emphasis on scientific discourse, relative to other arguments made in legislative testimony, might help produce political outcomes that favor public health.Workplace smoking restrictions protect workers from the harmful effects of secondhand smoke exposure. [1-3] However, the mechanisms for implementing such restrictions differ internationally and within the United States and may include occupational safety and health regulations,[4] public health department ordinances [5], and legislation instituted at the local, state or federal level.[6,7] These policies can vary in their scope, implementation, and enforcement, and ultimately in their ability to limit exposure to secondhand smoke.[8,9] Moreover, the processes by which different types of restrictions are created vary, suggesting that different factors may influence the development of legislation relative to regulation. For example, legislative decision making can influence regulatory action through actions such as oversight and budgeting, but regulatory agencies do not have similar powers over the legislature.Past studies of the behavior of regulatory agencies have specifically noted the role of outside testimony in the decision making pro
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