2,437 research outputs found
A Micro and Macro Analysis of Israel\u27s Organ Donation System
From the Washington University Office of Undergraduate Research Digest (WUURD), Vol. 12, 05-01-2017. Published by the Office of Undergraduate Research. Joy Zalis Kiefer, Director of Undergraduate Research and Associate Dean in the College of Arts & Sciences; Lindsey Paunovich, Editor; Helen Human, Programs Manager and Assistant Dean in the College of Arts and Sciences Mentor: Charlie Kurt
Fluctuations of the azimuthal particle distribution in NA49 at the CERN SPS
Event-by-event fluctuations and correlations in azimuthal angle are currently
widely investigated in various experiments. In this paper the measure
(earlier used in experiments to evaluate fluctuations in transverse momentum)
is now applied to azimuthal angle . Properties of this
function are investigated through fast generators and with complex models such
as Pythia, Hijing, and UrQMD. Preliminary results of NA49 on are
also presented. The system size dependence (p+p, C+C, Si+Si and 6 centralities
of Pb+Pb) at the highest SPS energy (158 GeV) is shown, as well as the
energy dependence (20 - 158 GeV) for the 7.2\% most central Pb+Pb
interactions.Comment: Proceedings from Hot Quarks 2010,June 21-2
Hadronic dissipative effects on elliptic flow in ultrarelativistic heavy-ion collisions
We study the elliptic flow coefficient v_2(eta,b) in Au+Au collisions at
sqrt(s)=200 A GeV as a function of pseudorapidity eta and impact parameter b.
Using a hybrid approach which combines early ideal fluid dynamical evolution
with late hadronic rescattering, we demonstrate strong dissipative effects from
the hadronic rescattering stage on the elliptic flow. With Glauber model
initial conditions, hadronic dissipation is shown to be sufficient to fully
explain the differences between measured v_2 values and ideal hydrodynamic
predictions. Initial conditions based on the Color Glass Condensate model
generate larger elliptic flow and seem to require additional dissipation during
the early quark-gluon plasma stage in order to achieve agreement with
experiment.Comment: 6 pages, 4 figure
Nucleon Charge Symmetry Breaking and Parity Violating Electron-Proton Scattering
The consequences of the charge symmetry breaking effects of the mass
difference between the up and down quarks and electromagnetic effects for
searches for strangeness form factors in parity violating electron scattering
from the proton are investigated. The formalism necessary to identify and
compute the relevant observables is developed by separating the Hamiltonian
into charge symmetry conserving and breaking terms. Using a set of SU(6)
non-relativistic quark models, the effects of the charge symmetry breaking
Hamiltonian are considered for experimentally relevant alues of the momentum
transfer and found to be less than about 1 percent. The charge symmetry
breaking corrections to the Bjorken sum rule are also studied and shown to
vanish in first-order perturbation theory.Comment: 35 pages, 9 figure
Being ethically minded: Practising the scholarship of teaching and learning in an ethical manner
This article was published as Being ethically minded: Practising the scholarship of teaching and learning in an ethical manner in Teaching and Learning Inquiry, 1(2), 2013, pp. 23-32. No part of this article may be reproduced, stored in a retrieval system, transmitted, or distributed, in any form, by any means, electronic, mechanical, photographic, or otherwise, without the prior permission of Indiana University Press. For educational re-use, please contact the Copyright Clearance Center (508-744-3350). For all other permissions, please visit Indiana University Press' permissions page.The authors propose a working definition of ethical SoTL, an ethical framework for SoTL inquiry, and present a case study that illustrates the complexity of ethical issues in SoTL. The Ethical SoTL Matrix is a flexible framework designed to support SoTL practitioners, particularly in the formative stages of their inquiries. Three dominant ethical traditions form the basis of the matrix: teleological or pragmatic, external, and deontological. The key message of the paper is that SoTL practitioners should reflect on different perspectives in their efforts to do what is right in any given situation. The matrix introduces three dominant ethical traditions, but SoTL practitioners may ultimately move beyond these traditions to explore a range of ethical considerations appropriate to their projects and disciplines
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