30,875 research outputs found
Jet measurements in pp, p--Pb and Pb--Pb collisions with ALICE at the LHC
We present a systematic study of jet measurements in pp, p--Pb and Pb--Pb
collisions using the ALICE detector at the LHC. Jet production cross sections
are measured in pp collisions at = 2.76 and 7~TeV, in p--Pb
collisions at = 5.02~TeV and in Pb--Pb collisions at
= 2.76~TeV. Jet shape observables and fragmentation
distributions are measured in pp collisions at 7~TeV. Jets are reconstructed at
midrapidity in a wide range of transverse momentum using sequential
recombination jet finding algorithms (, anti-, and
SISCone) with several values of jet resolution parameter in the range 0.2
-- 0.6. Measurements are compared to Next-to-Leading Order (NLO) perturbative
Quantum Chromodynamics (pQCD) calculations and predictions from Monte Carlo
(MC) event generators such as PYTHIA, PHOJET and HERWIG. Jet production cross
sections are well reproduced by NLO pQCD calculations in pp collisions at
~=~2.76~TeV. MC models could not explain the jet cross sections in pp
collisions at = 7 TeV, whereas jet shapes and fragmentation
distributions are rather well reproduced by these models. The jet nuclear
modification factor in p--Pb collisions is found to be consistent
with unity indicating the absence of large modifications of the initial parton
distribution or strong final state effects on jet production, whereas a large
jet suppression is observed in Pb--Pb central events with respect to peripheral
events indicating formation of a dense medium in central Pb--Pb events.Comment: 6 pages, 5 figures, 7th International Conference on Physics and
Astrophysics of Quark Gluon Plasma, 1-5 February, 2015, Kolkata, Indi
Asynchronous Early Output Dual-Bit Full Adders Based on Homogeneous and Heterogeneous Delay-Insensitive Data Encoding
This paper presents the designs of asynchronous early output dual-bit full
adders without and with redundant logic (implicit) corresponding to homogeneous
and heterogeneous delay-insensitive data encoding. For homogeneous
delay-insensitive data encoding only dual-rail i.e. 1-of-2 code is used, and
for heterogeneous delay-insensitive data encoding 1-of-2 and 1-of-4 codes are
used. The 4-phase return-to-zero protocol is used for handshaking. To
demonstrate the merits of the proposed dual-bit full adder designs, 32-bit
ripple carry adders (RCAs) are constructed comprising dual-bit full adders. The
proposed dual-bit full adders based 32-bit RCAs incorporating redundant logic
feature reduced latency and area compared to their non-redundant counterparts
with no accompanying power penalty. In comparison with the weakly indicating
32-bit RCA constructed using homogeneously encoded dual-bit full adders
containing redundant logic, the early output 32-bit RCA comprising the proposed
homogeneously encoded dual-bit full adders with redundant logic reports
corresponding reductions in latency and area by 22.2% and 15.1% with no
associated power penalty. On the other hand, the early output 32-bit RCA
constructed using the proposed heterogeneously encoded dual-bit full adder
which incorporates redundant logic reports respective decreases in latency and
area than the weakly indicating 32-bit RCA that consists of heterogeneously
encoded dual-bit full adders with redundant logic by 21.5% and 21.3% with nil
power overhead. The simulation results obtained are based on a 32/28nm CMOS
process technology
Eigenfunctions of the Laplace-Beltrami Operator on Hyperboloids
Eigenfunctions of the Laplace-Beltrami operator on a hyperboloid are studied
in the spirit of the treatment of the spherical harmonics by Stein and Weiss.
As a special case, a simple self-contained proof of Laplace's integral for a
Legendre function is obtained.Comment: 5 page
Predoctoral Dental Students’ Perceptions of Dental Implant Training: Effect of Preclinical Simulation and Clinical Experience
The aims of this study were to assess 1) differences in perceptions of dental implant training between dental students who received didactic training alone (control group) and those who received didactic plus simulation training (test group); 2) differences in response between students with and without clinical experience in implant dentistry; and 3) the interaction effect of simulation training and clinical experience on students’ satisfaction. A survey was distributed to the control group in 2014 and to the test group in 2015; both groups were at the same U.S. dental school. Data were collected on confidence levels with various implant restorative procedures along with overall satisfaction and number of implant restorations performed by each student. The response rate was 78.7% in the control group and 81.3% in the test group. In the control group, 85.7% of students reported being satisfied with implant training compared to 90.8% of students in the test group. The interaction effect of simulation training and clinical experience on overall student satisfaction was OR=1.5 at 95% CI: 0.8, 3.0. The students who had clinical experience with implant restorative procedures had significantly greater satisfaction than those who did not (OR=4.8, 95% CI: 2.1, 11.1,
On the SL(2) period integral
Let E/F be a quadratic extension of number fields. For a cuspidal
representation of SL(2,A_E), we study the non-vanishing of the period
integral on SL(2,F)\SL(2,A_F). We characterise the non-vanishing of the period
integral of in terms of being generic with respect to characters of
E\A_E which are trivial on A_F. We show that the period integral in general is
not a product of local invariant functionals, and find a necessary and
sufficient condition when it is. We exhibit cuspidal representations of
SL(2,A_E) whose period integral vanishes identically while each local
constituent admits an SL(2)-invariant linear functional. Finally, we construct
an automorphic representation on SL(2,A_E) which is abstractly SL(2,A_F)
distinguished but none of the elements in the global L-packet determined by
is distinguished by SL(2,A_F)
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