1,721,060 research outputs found
Rome–Paris, 1950-1959: «Phases de l'Esperienza moderna», la calligraphie extrême-orientale et la poésie
No full text
schede nn. 10, 19–20, 36–38, 46, 50–68, 74-75, 185–186, 203-204, relative alle opere di Lucio Fontana, Giuseppe Capogrossi, Achille Perilli, Gastone Novelli, Emilio Scanavino, Norman Bluhm, Pinot Gallizio, Karel Appel, Asger Jorn, Fausto Melotti, Carol Rama, Günther Förg
No full text
Schede delle opere di Kenneth Armitage, Alik Cavaliere, Agustín Cárdenas, Lynn Chadwick, Jean Dubuffet, Sonja Ferlov Mancoba, Noguchi Isamu, Fritz Wotruba
No full textLo sguardo delle viaggiatrici sull'Italia di mezzo. Un progetto fotografico / The Gaze of women travellers on Middle Italy. A photography project
No full textRing oscillators analysis for security purposes in Spartan-6 FPGAs
No full textNowadays, many digital applications domains are arising and posing new design issued and challenges related to the security and trustworthiness. Physically Unclonable Functions (PUFs) are emergent and promising solutions in providing some security mechanisms, such as key storing and generation, challenge/response provider, and protection of Intellectual Properties (IPs). As a huge range of embedded applications is deployed on Field Programmable Gate Arrays (FPGAs) devices, most widespread PUFs’ architectures are based on Ring Oscillators (ROs), as they are suitable for an implementation on programmable devices. ROPUF exploits comparisons of measured frequencies, obtained by picking a RO pair, aiming to generate bit responses. In this paper, we present a study of the frequencies characteristics, implementing ROs on a significant number of Xilinx Spartan 6 devices, in order to statistically characterize the oscillations, evaluating the impact of some external uncontrolled parameters that can disturb and alter their original qualities, useful to validate the effectiveness of the ROPUF
Implementation and analysis of ring oscillator circuits on xilinx FPGAs
No full textThis chapter gives an extensive description of ring oscillators (ROs) implemented on Xilinx FPGA technology, aiming at providing a basic primitive to define physically unclonable functions based on ROs and illustrating, through detailed analyses, frequency distributions. As for the implementation, we detail in the chapter any step required to implement a RO and measure its frequency. In particular, we illustrate how to accomplish such operation by means of Xilinx ChipScope. Furthermore, we show main design parameters, such as the number of stages, of the RO and how they impact on the frequency characterization. At the end, we provide other characterization by means of dynamic parameters variations, such as temperature and aging effects
- …
