4,035 research outputs found
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
Temporary Office. First Act: il Mercato del Pesce di Genova.
No full textIl volume tratta l'esperienza del workshop intensivo Temporary Office svoltosi a Genova dal 10 al 17 novembre 2016 a cura di Valter Scelsi e Lorenzo Trompetto e sotto la direzione di Simona Malvezzi. Il workshop è dedicato all’ex Mercato del Pesce di piazza Cavour, alla sua storia e alle sue possibilità di riutilizzo e riconversione a nuove destinazioni d’uso. Oltre ai testi dei curatori - Antonio Lavarello, Luigi Mandraccio, Gian Luca Porcile, Valter Scelsi e Lorenzo Trompetto - il libro contiene i contributi di Benedetto Besio (Fondazione degli Architetti di Genova), Andrea Canziani (Soprintendenza Archeologia, Belle Arti e Paesaggio per la città metropolitana di Genova e le province di Imperia, La Spezia e Savona), Francesco Garutti (Canadian Centre for Architecture), Simona Malvezzi (Kuehn Malvezzi), Anna Positano (fotografa)
Luca MARENZIO. O mille volte
No full textDisponible en partie sur le site de l'éditeur : http://edacj.musicanet.org/product_info.php?products_id=4676 (version complète payante)Partition (musique en feuillet), Ed. ACJ, n°6064La musique des Intermèdes de la Pellegrina a du apparaître comme un tourbillon de nouveautés lorsqu'elles résonnèrent à Florence en 1589 pour le fastueux mariage de Ferdinand de Médicis avec la princesse Christine de Lorraine, petite fille de Catherine de Médicis, la mère du roi de France. Les compositeurs les plus réputés de l'époque comme Emilio de Cavalieri, Cristofano Malvezzi, Luca Marenzio, Giulio Caccini ou Jacopo Peri collaborent ainsi aux différentes facettes des six intermèdes, plus étonnants, inouïs les uns que les autres. Luca Marenzio compose toutes les musiques des intermèdes 2 et 3 dans des effectifs variés de 3 à 18 voix. O mille volte conclut joyeusement ce dernier intermède où Apollon tue le monstre à Delphes
Characterization Results for the Poset Based Representation of Topological Relations - I: Introduction and Models
No full text@article{DBLP:journals/informaticaSI/ForlizziN99,
author = {Luca Forlizzi and
Enrico Nardelli},
title = {Characterization Results for the Poset Based Representation
of Topological Relations - I: Introduction and Models.},
journal = {Informatica (Slovenia)},
volume = {23},
number = {2},
year = {1999},
bibsource = {DBLP, http://dblp.uni-trier.de}
Characterization Results for the Poset Based Representation of Topological Relations - II: Intersection and Union
No full text@article{DBLP:journals/informaticaSI/ForlizziN00,
author = {Luca Forlizzi and
Enrico Nardelli},
title = {Characterization Results for the Poset Based Representation
of Topological Relations - II: Intersection and Union.},
journal = {Informatica (Slovenia)},
volume = {24},
number = {1},
year = {2000},
bibsource = {DBLP, http://dblp.uni-trier.de}
System-on-chip Computing and Interconnection Architectures for Telecommunications and Signal Processing
No full textThis dissertation proposes novel architectures and design techniques targeting SoC building blocks for telecommunications and signal processing applications.
Hardware implementation of Low-Density Parity-Check decoders is approached at both the algorithmic and the architecture level. Low-Density Parity-Check codes are a promising coding scheme for future communication standards due to their outstanding error correction performance.
This work proposes a methodology for analyzing effects of finite precision arithmetic on error correction performance and hardware complexity. The methodology is throughout employed for co-designing the decoder. First, a low-complexity check node based on the P-output decoding principle is designed and characterized on a CMOS standard-cells library. Results demonstrate implementation loss below 0.2 dB down to BER of 10^{-8} and a saving in complexity up to 59% with respect to other works in recent literature. High-throughput and low-latency issues are addressed with modified single-phase decoding schedules. A new "memory-aware" schedule is proposed requiring down to 20% of memory with respect to the traditional two-phase flooding decoding. Additionally, throughput is doubled and logic complexity reduced of 12%. These advantages are traded-off with error correction performance, thus making the solution attractive only for long codes, as those adopted in the DVB-S2 standard. The "layered decoding" principle is extended to those codes not specifically conceived for this technique. Proposed architectures exhibit complexity savings in the order of 40% for both area and power consumption figures, while implementation loss is smaller than 0.05 dB.
Most modern communication standards employ Orthogonal Frequency Division Multiplexing as part of their physical layer. The core of OFDM is the Fast Fourier Transform and its inverse in charge of symbols (de)modulation. Requirements on throughput and energy efficiency call for FFT hardware implementation, while ubiquity of FFT suggests the design of parametric, re-configurable and re-usable IP hardware macrocells. In this context, this thesis describes an FFT/IFFT core compiler particularly suited for implementation of OFDM communication systems. The tool employs an accuracy-driven configuration engine which automatically profiles the internal arithmetic and generates a core with minimum operands bit-width and thus minimum circuit complexity. The engine performs a closed-loop optimization over three different internal arithmetic models (fixed-point, block floating-point and convergent block floating-point) using the numerical accuracy budget given by the user as a reference point. The flexibility and re-usability of the proposed macrocell are illustrated through several case studies which encompass all current state-of-the-art OFDM communications standards (WLAN, WMAN, xDSL, DVB-T/H, DAB and UWB). Implementations results are presented for two deep sub-micron standard-cells libraries (65 and 90 nm) and commercially available FPGA devices. Compared with other FFT core compilers, the proposed environment produces macrocells with lower circuit complexity and same system level performance (throughput, transform size and numerical accuracy).
The final part of this dissertation focuses on the Network-on-Chip design paradigm whose goal is building scalable communication infrastructures connecting hundreds of core. A low-complexity link architecture for mesochronous on-chip communication is discussed. The link enables skew constraint looseness in the clock tree synthesis, frequency speed-up, power consumption reduction and faster back-end turnarounds. The proposed architecture reaches a maximum clock frequency of 1 GHz on 65 nm low-leakage CMOS standard-cells library. In a complex test case with a full-blown NoC infrastructure, the link overhead is only 3% of chip area and 0.5% of leakage power consumption.
Finally, a new methodology, named metacoding, is proposed. Metacoding generates correct-by-construction technology independent RTL codebases for NoC building blocks. The RTL coding phase is abstracted and modeled with an Object Oriented framework, integrated within a commercial tool for IP packaging (Synopsys CoreTools suite). Compared with traditional coding styles based on pre-processor directives, metacoding produces 65% smaller codebases and reduces the configurations to verify up to three orders of magnitude
Introduzione (a Media-Impresa. Discorsi e pratiche cinematografiche e mediali nella cultura industriale)
No full textDelle tante vite parallele del cinema quella industriale non è certo tra le
più appariscenti. Eppure, è anche districandosi fra cubicoli da ufficio, fiere campionarie, presentazioni aziendali e viaggi d’affari che i mezzi audiovisivi hanno adempito alla propria funzione di agenti storici, divenendo presenze via via più pervasive e influenti nella quotidianità dei luoghi di lavoro. Questo numero speciale di «Cinema e Storia» parte dall’ormai vasta letteratura esistente sul cinema industriale e sponsorizzato per adottare una più ampia prospettiva sul processo di “mediatizzazione” che ha interessato le imprese e le organizzazioni lavorative nel contesto italiano. Muovendo della ripresa post- bellica come punto di partenza obbligato e individuando il boom economico quale periodo di maggior fortuna della cinematografia d’impresa, ci si spinge fino a metà degli anni Ottanta, quanto la rete mediale delle aziende accoglie l’introduzione delle tecnologie elettroniche e informatiche. A diverse altezze
di questo percorso, i saggi qui raccolti offrono spaccati sulle istituzioni e sui saperi che hanno contribuito a irregimentare il cinema tra gli strumenti della cultura imprenditoriale, sulle accezioni discorsive di medialità che emergono dalle pagine degli house organ aziendali e sul ruolo giocato dall’audiovisivo nella rappresentazione dei paesaggi industriali e nella costruzione della corporate image. Un assortimento di casi differenti sui quali si staglia il miraggio tutto italiano del tecno-umanesimo, ora in termini utopistici (il perfetto connubio fra estro artistico e precisione tecnica) ora con sembianze distopiche, a piegare ogni espressione culturale ai fini dell’ingegneria sociale
Development and validation of odometric algorithms for railway control and monitoring systems [Sviluppo e validazione di algoritmi di odometria per sistemi di controllo e monitoraggio ferroviari]
No full textPresent railway systems need amomatica devices for train running control because of the high speed and the higher and higher safety, efficiency and reliability levels required. A fundamental part of these control systems is the so-called odometry that is the set of equipment and software procedures that allow to know with continuity position and speed of the running trains. The odomeiric system validation is carried out on the basis of a series of tests that have to reproduce the highest possible number of cases that could actually occur (degraded adherence conditions axle locking, fault of sensores, etc., This paper describes the operation principles of the control and monitoring systems that are presently in a development and implementation phase at both national level (SCMT system) and European level (ERTMS). Some possible solutions for the odometric system are then illustrated. A software model for train simulation is finally described; this model will be able to be utilized for the odomeiric system validation without resorting to trial runs or anyway reducing their neccessity
Long-lasting clinical, radiological and immunological remission of severe nasal polyposis by means of 'reboot' surgery
No full textA 68-year-old woman with a long history of relapsing chronic rhinosinusitis with nasal polyps (CRSwNP) underwent a complete reboot surgery and nasal biopsy prior to and after surgery. Remarkable improvement of symptoms and no signs of mucosal oedema and no complaints of initially worsening nasal functions were still present 12 months after reboot surgery. Biopsy demonstrated an outstanding reduction in eosinophilic infiltration and re-epithelisation of nasal mucosa with normal features after reboot approach compared with previous surgeries. Therefore, reboot approach may become an effective instrument in plurioperated patients with CRSwNP who suffer from a nasal condition that is recalcitrant to pharmacological therapies and is unsatisfactorily treated by standard surgical techniques
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