6,279 research outputs found
Re-entrant pinning of Wigner molecules in a magnetic field due to a Coulomb impurity
Pinning of magnetic-field induced Wigner molecules (WMs) confined in
parabolic two-dimensional quantum dots by a charged defect is studied by an
exact diagonalization approach. We found a re-entrant pinning of the WMs as
function of the magnetic field, a magnetic field induced re-orientation of the
WMs and a qualitatively different pinning behaviour in the presence of a
positive and negative Coulomb impurity
Embedded Software V&V using Virtual Platforms for Powertrain applications
International audienceCurrent development trends for automotive products are driven by time to market reduction, cost optimization, and quality improvement. Dual to these business constraints are demands for innovation and safety conformance which impose increasing complexity on embedded systems. To address these challenges impacting software and hardware to improve system dependability, new methodology and tools need to be set-up. The use of representative virtual platforms combining speed and accuracy allows earlier software development, improved system testing, and fault injection analysis, with a high potential for reuse of system IPs (including both hardware and software). In this paper, we will present investigation on new methods and associated results using a simplified virtual platform to test a powertrain application
Thermoelectric Processes and Materials
Contains reports on three research projects.United States Navy, Office of Naval Research (Contract Nonr-1841(51)
Thermoelectric Processes and Materials
Contains reports on three research projects.United States Navy, Office of Naval Research (Contract Nonr-1841(51)
Insights from SONATA: Implementing and integrating a microservice-based NFV service platform with a DevOps methodology
Thermoelectric Processes and Materials
Contains reports on four research projects.U. S. Navy (Office of Naval Research) under Contract Nonr-1841(51
Scalable architecture for service function chain orchestration
Network Function Virtualization (NFV) enables to implement network functions in software, high-speed packet processing functions which traditionally are dominated by hardware implementations. Virtualized Network Functions (NFs) may be deployed on generic-purpose servers, e.g., in datacenters. The latter enables flexibility and scalability which previously were only possible for web services deployed on cloud platforms. The merit of NFV is challenged by control challenges related to the selection of NF implementations, discovery and reservation of sufficient network and server resources, and interconnecting both in a way which fulfills SLAs related to reliability and scalability. This paper details the role of a scalable orchestrator in charge of finding and reserving adequate resources. The latter will steer network and cloud control and management platforms to actually reserve and deploy requested services. We highlight the role of involved interfaces, propose elements of algorithmic components, and will identify major blocks in orchestration time in a proof of concept prototype which accounts for most functional parts in the considered architecture. Based on these evaluations, we propose several architectural enhancements in order to implement a highly scalable network orchestrator for carrier and cloud networks
A fundamental test of the Higgs Yukawa coupling at RHIC in A+A collisions
Searches for the intermediate boson, , the heavy quantum of the Weak
Interaction, via its semi-leptonic decay, , in the 1970's instead
discovered unexpectedly large hadron production at high , notably ,
which provided a huge background of from internal and external
conversions. Methods developed at the CERN ISR which led to the discovery of
direct-single- in 1974, later determined to be from the semi-leptonic
decay of charm which had not yet been discovered, were used by PHENIX at RHIC
to make precision measurements of heavy quark production in p-p and Au+Au
collisions, leading to the puzzle of apparent equal suppression of light and
heavy quarks in the QGP. If the Higgs mechanism gives mass to gauge bosons but
not to fermions, then a proposal that all 6 quarks are nearly massless in a
QGP, which would resolve the puzzle, can not be excluded. This proposal can be
tested with future measurements of heavy quark correlations in A+A collisionsComment: 12 pages, 16 figures, 26th Winter Workshop on Nuclear Dynamics, Ocho
Rios, Jamaica WI, January 2-9, 2010. Corrected citation of 1974 direct single
lepton discover
- …