377 research outputs found
Search for "anomalies" from neutrino and anti-neutrino oscillations at Delta_m^2 ~ 1eV^2 with muon spectrometers and large LAr-TPC imaging detectors
This proposal describes an experimental search for sterile neutrinos beyond
the Standard Model with a new CERN-SPS neutrino beam. The experiment is based
on two identical LAr-TPC's followed by magnetized spectrometers, observing the
electron and muon neutrino events at 1600 and 300 m from the proton target.
This project will exploit the ICARUS T600, moved from LNGS to the CERN "Far"
position. An additional 1/4 of the T600 detector will be constructed and
located in the "Near" position. Two spectrometers will be placed downstream of
the two LAr-TPC detectors to greatly complement the physics capabilities.
Spectrometers will exploit a classical dipole magnetic field with iron slabs,
and a new concept air-magnet, to perform charge identification and muon
momentum measurements in a wide energy range over a large transverse area. In
the two positions, the radial and energy spectra of the nu_e beam are
practically identical. Comparing the two detectors, in absence of oscillations,
all cross sections and experimental biases cancel out, and the two
experimentally observed event distributions must be identical. Any difference
of the event distributions at the locations of the two detectors might be
attributed to the possible existence of {\nu}-oscillations, presumably due to
additional neutrinos with a mixing angle sin^2(2theta_new) and a larger mass
difference Delta_m^2_new. The superior quality of the LAr imaging TPC, in
particular its unique electron-pi_zero discrimination allows full rejection of
backgrounds and offers a lossless nu_e detection capability. The determination
of the muon charge with the spectrometers allows the full separation of nu_mu
from anti-nu_mu and therefore controlling systematics from muon
mis-identification largely at high momenta.Comment: Experiment proposa
Space station systems: A bibliography with indexes (supplement 10)
This bibliography lists 1,422 reports, articles, and other documents introduced into the NASA scientific and technical information system between July 1, 1989 and December 31, 1989. Its purpose is to provide helpful information to researchers, designers and managers engaged in Space Station technology development and mission design. Coverage includes documents that define major systems and subsystems related to structures and dynamic control, electronics and power supplies, propulsion, and payload integration. In addition, orbital construction methods, servicing and support requirements, procedures and operations, and missions for the current and future Space Station are included
Improving Large-Scale Network Traffic Simulation with Multi-Resolution Models
Simulating a large-scale network like the Internet is a challenging undertaking because of the sheer volume of its traffic. Packet-oriented representation provides high-fidelity details but is computationally expensive; fluid-oriented representation offers high simulation efficiency at the price of losing packet-level details. Multi-resolution modeling techniques exploit the advantages of both representations by integrating them in the same simulation framework. This dissertation presents solutions to the problems regarding the efficiency, accuracy, and scalability of the traffic simulation models in this framework. The ``ripple effect\u27\u27 is a well-known problem inherent in event-driven fluid-oriented traffic simulation, causing explosion of fluid rate changes. Integrating multi-resolution traffic representations requires estimating arrival rates of packet-oriented traffic, calculating the queueing delay upon a packet arrival, and computing packet loss rate under buffer overflow. Real time simulation of a large or ultra-large network demands efficient background traffic simulation. The dissertation includes a rate smoothing technique that provably mitigates the ``ripple effect\u27\u27, an accurate and efficient approach that integrates traffic models at multiple abstraction levels, a sequential algorithm that achieves real time simulation of the coarse-grained traffic in a network with 3 tier-1 ISP (Internet Service Provider) backbones using an ordinary PC, and a highly scalable parallel algorithm that simulates network traffic at coarse time scales
Technology for large space systems: A bibliography with indexes (supplement 22)
This bibliography lists 1077 reports, articles, and other documents introduced into the NASA Scientific and Technical Information System between July 1, 1989 and December 31, 1989. Its purpose is to provide helpful information to the researcher or manager engaged in the development of technologies related to large space systems. Subject areas include mission and program definition, design techniques, structural and thermal analysis, structural dynamics and control systems, electronics, advanced materials, assembly concepts, and propulsion
Aeronautical engineering: A continuing bibliography with indexes (supplement 286)
This bibliography lists 845 reports, articles, and other documents introduced into the NASA scientific and technical information system in Dec. 1992. Subject coverage includes: design, construction and testing of aircraft and aircraft engines; aircraft components, equipment, and systems; ground support systems; and theoretical and applied aspects of aerodynamics and general fluid dynamics
AIMETA 2005. Atti del XVII Congresso dell'Associazione italiana di meccanica teorica e applicata. Firenze, 11-15 settembre 2005
The volume collects the contributions presented at the XVII national congress of AIMETA. The contributions are grouped according to the various sectors of theoretical and applied mechanics and are offered by a vast scientific community. In addition to the classical sectors, themes of interdisciplinary significance and of considerable interest and highly innovative content were added, for the analysis of which small exchange symposia were proposed. Organised according to 52 sessions (plenary and parallel), the volume contains 290 scientific works that are mainly the result of international cooperation. Therefore, the work represents a significant picture of the current situation and future prospects for mechanics
LHCb Particle Identification Upgrade: Technical Design Report
The LHCb upgrade will take place in the second long shutdown of the LHC, currently scheduled to begin in 2018. The upgrade will enable the experiment to run at luminosities of 2 x 10^33 cm^-2 s^-1 and will read out data at a rate of 40MHz into a exible software-based
trigger. All sub-detectors of LHCb will be re-designed to comply with these new operating conditions. This Technical Design Report presents the upgrade plans of the Ring Imaging Cherenkov (RICH) system, the calorimeter system and the muon system, which together provide the particle identication capabilities of the experiment
Side-channel attacks and countermeasures in the design of secure IC's devices for cryptographic applications
Abstract--- A lot of devices which are daily used have to guarantee the retention of sensible data. Sensible data are ciphered by a secure key by which only the key holder can get the data. For this reason, to protect the cipher key against possible attacks becomes a main issue. The research activities in hardware cryptography are involved in finding new countermeasures against various attack scenarios and, in the same time, in studying new attack methodologies. During the PhD, three different logic families to counteract Power Analysis were presented and a novel class of attacks was studied. Moreover, two different activities related to Random Numbers Generators have been addressed
Terza giornata di studio Ettore Funaioli: 16 luglio 2009
In questo volume sono raccolte le memorie presentate in occasione della “Terza giornata di studio Ettore Funaioli”, che si è tenuta il 16 luglio 2009 presso la Facoltà di Ingegneria dell’Alma Mater Studiorum – Università di Bologna.
La giornata è stata organizzata dagli ex allievi del prof. Funaioli con la collaborazione del DIEM, Dipartimento di Ingegneria delle Costruzioni Meccaniche, Nucleari, Aeronautiche e di Metallurgia dell’Alma Mater Studiorum – Università di Bologna, con il patrocinio del GMA – Gruppo di Meccanica Applicata
- …