655 research outputs found
NetFPGA Hardware Modules for Input, Output and EWMA Bit-Rate Computation
NetFPGA is a hardware board that it is becoming increasingly popular in various research
areas. It is a hardware customizable router and it can be used to study, implement and test
new protocols and techniques directly in hardware. It allows researchers to experience a
more real experiment environment. In this paper we present a work about the design and
development of four new modules built on top of the NetFPGA Reference Router design. In
particular, they compute the input and output bit rate run time and provide an estimation
of the input bit rate based on an EWMA filter. Moreover we extended the rate limiter
module which is embedded within the output queues in order to test our improved Reference
Router. Along the paper we explain in detail each module as far as the architecture and the
implementation are concerned. Furthermore, we created a testing environment which show
the effectiveness and effciency of our module
MODY 2: report of two cases with a new gene mutation in GCK
La diabetes MODY (Maturity Onset Diabetes of the Young) comprende un grupo heterogéneo de enfermedades monogénicas que se caracterizan por la disfunción de las células β. Se estima que ellas son responsables de 2-5% de los casos de diabetes. Se conocen más de 200 mutaciones en el gen de la glucoquinasa (GCK). En este trabajo se expone el caso de dos hermanas en las cuales se realizó el diagnóstico de MODY 2 a través del estudio genético, hallándose una mutación del gen de la GCK no descripto previamente en la bibliografía.MODY (maturity onset diabetes of the young) includes a heterogeneous group of monogenic diseases which are characterized by dysfunction of beta cells. It accounts for 2-5% of all cases of diabetes. Over 200 mutations in the glucokinase (GCK) gene are known. In this paper we discuss the cases of two sisters in which the diagnosis of MODY 2 was performed by genetic studies, and report the finding of a mutation in the GCK gene not previously described in the literature.Fil: Chiarpenello, J.. Centro de Endocrinología de Rosario; Argentina. Provincia de Santa Fe. Ministerio de Salud y Medio Ambiente - Rosario. Hospital Provincial del Centenario; ArgentinaFil: Fernández, L.. Provincia de Santa Fe. Ministerio de Salud y Medio Ambiente - Rosario. Hospital Provincial del Centenario; ArgentinaFil: Riccobene, A.. Provincia de Santa Fe. Ministerio de Salud y Medio Ambiente - Rosario. Hospital Provincial del Centenario; ArgentinaFil: Baella, A.. Provincia de Santa Fe. Ministerio de Salud y Medio Ambiente - Rosario. Hospital Provincial del Centenario; ArgentinaFil: Strallnicof, M.. Provincia de Santa Fe. Ministerio de Salud y Medio Ambiente - Rosario. Hospital Provincial del Centenario; ArgentinaFil: Castagnani, V.. Provincia de Santa Fe. Ministerio de Salud y Medio Ambiente - Rosario. Hospital Provincial del Centenario; ArgentinaFil: Herrera, M.. Provincia de Santa Fe. Ministerio de Salud y Medio Ambiente - Rosario. Hospital Provincial del Centenario; ArgentinaFil: Sermasi, V.. Provincia de Santa Fe. Ministerio de Salud y Medio Ambiente - Rosario. Hospital Provincial del Centenario; ArgentinaFil: Laurenti, N.. Provincia de Santa Fe. Ministerio de Salud y Medio Ambiente - Rosario. Hospital Provincial del Centenario; ArgentinaFil: Carretto, H.. Provincia de Santa Fe. Ministerio de Salud y Medio Ambiente - Rosario. Hospital Provincial del Centenario; Argentina. Centro de Endocrinología de Rosario; ArgentinaFil: Baquedano, María Sonia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentin
Acoustic positioning system for KM3NeT
[EN] KM3NeT is the next generation neutrino telescope in the Mediterranean Sea employing the technique
of Cherenkov photon detection. The Acoustic Positioning System (APS) is a mandatory
sub-system of KM3NeT that must provide the position of the telescope¿s mechanical structures,
in a geo-referenced coordinate system. The APS is important for a safe and accurate deployment
of the mechanical structures and, for the sake of science, for precise reconstruction of neutrinoinduced
events. The KM3NeT APS is composed of three main sub-systems: 1) an array of acoustic
receivers rigidly connected to the telescope mechanical structures; 2) a Long Base-Line (LBL)
of acoustic transmitters (beacons) and receivers, anchored on the seabed at known positions; 3)
a farm of PCs for the acoustic data analysis, on-shore. On shore, the positions of the acoustic
receivers are calculated by measuring the ToF (Time Of Flight) of the LBL beacons¿ signals on
the acoustic receivers, thus determining, via multi-lateration, the position of the acoustic receivers
with respect to the geo-referenced LBL. The synchronized and syntonized electronics and the data
transmission/acquisition allows for calculating the latencies of the whole data acquisition chain
with an accuracy of better than 100 ns. The APS, in combination with compass and tilt, pressure,
current and sound velocity data, is expected to measure the positions of the digital optical modules
in the deep sea with an accuracy of about 10 cm. Since data are continuously transmitted
to shore and distributed to the local data acquisition network at the shore station, acoustic data
are available also for Earth and Sea science users. The KM3NeT APS is also an excellent tool to
study the feasibility of an acoustic neutrino detector and a possible correlation between acoustic
and optical signals.S18116
Detection potential to point-like neutrino sources with the NEMO-km3 telescope
The NEMO Collaboration is conducting an R&D activity towards the construction
of a Mediterranean km3 neutrino telescope. In this work, we present the results
of Monte Carlo simulation studies on the capability of the proposed NEMO
telescope to detect and identify point-like sources of high energy muon
neutrinos.Comment: To be published on BCN06 proceedings (Barcelona, July 4-7, 2006
Time Scales in Spectator Fragmentation
Proton-proton correlations and correlations of p-alpha, d-alpha, and t-alpha
from spectator decays following Au + Au collisions at 1000 AMeV have been
measured with an highly efficient detector hodoscope. The constructed
correlation functions indicate a moderate expansion and low breakup densities
similar to assumptions made in statistical multifragmentation models. In
agreement with a volume breakup rather short time scales were deduced employing
directional cuts in proton-proton correlations.
PACS numbers: 25.70.Pq, 21.65.+f, 25.70.MnComment: 8 pages, with 5 included figures; To appear in the proceedings of the
CRIS 2000 conference; Also available from
http://www-kp3.gsi.de/www/kp3/aladin_publications.htm
Thermal and Chemical Freeze-out in Spectator Fragmentation
Isotope temperatures from double ratios of hydrogen, helium, lithium,
beryllium, and carbon isotopic yields, and excited-state temperatures from
yield ratios of particle-unstable resonances in 4He, 5Li, and 8Be, were
determined for spectator fragmentation, following collisions of 197Au with
targets ranging from C to Au at incident energies of 600 and 1000 MeV per
nucleon. A deviation of the isotopic from the excited-state temperatures is
observed which coincides with the transition from residue formation to
multi-fragment production, suggesting a chemical freeze-out prior to thermal
freeze-out in bulk disintegrations.Comment: 14 pages, 10 figures, submitted to Phys. Rev. C, small changes as
suggested by the editors and referee
Breakup Density in Spectator Fragmentation
Proton-proton correlations and correlations of protons, deuterons and tritons
with alpha particles from spectator decays following 197Au + 197Au collisions
at 1000 MeV per nucleon have been measured with two highly efficient detector
hodoscopes. The constructed correlation functions, interpreted within the
approximation of a simultaneous volume decay, indicate a moderate expansion and
low breakup densities, similar to assumptions made in statistical
multifragmentation models.
PACS numbers: 25.70.Pq, 21.65.+f, 25.70.Mn, 25.75.GzComment: 11 pages, LaTeX with 3 included figures; Also available from
http://www-kp3.gsi.de/www/kp3/aladin_publications.htm
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