3,004 research outputs found
A Game-theoretic Framework for Revenue Sharing in Edge-Cloud Computing System
We introduce a game-theoretic framework to ex- plore revenue sharing in an
Edge-Cloud computing system, in which computing service providers at the edge
of the Internet (edge providers) and computing service providers at the cloud
(cloud providers) co-exist and collectively provide computing resources to
clients (e.g., end users or applications) at the edge. Different from
traditional cloud computing, the providers in an Edge-Cloud system are
independent and self-interested. To achieve high system-level efficiency, the
manager of the system adopts a task distribution mechanism to maximize the
total revenue received from clients and also adopts a revenue sharing mechanism
to split the received revenue among computing servers (and hence service
providers). Under those system-level mechanisms, service providers attempt to
game with the system in order to maximize their own utilities, by strategically
allocating their resources (e.g., computing servers).
Our framework models the competition among the providers in an Edge-Cloud
system as a non-cooperative game. Our simulations and experiments on an
emulation system have shown the existence of Nash equilibrium in such a game.
We find that revenue sharing mechanisms have a significant impact on the
system-level efficiency at Nash equilibria, and surprisingly the revenue
sharing mechanism based directly on actual contributions can result in
significantly worse system efficiency than Shapley value sharing mechanism and
Ortmann proportional sharing mechanism. Our framework provides an effective
economics approach to understanding and designing efficient Edge-Cloud
computing systems
Finite time decoherence could be suppressed efficiently in photonic crystal
The decoherence of two initially entangled qubits in anisotropic band gap
photonic crystal has been studied analytically without Born or Markovian
approximation. It is shown that the decoherence dynamics of two qubits in
photonic crystal is greatly different from that of two qubits in vacuum or
subjected to usual non-Markovian reservoir. The results also show that the
finite time decoherence invoked by spontaneous emission could be suppressed
efficiently and the entanglement of the Bell state possesses odd parity is more
easily preserved in photonic crystal than that of the Bell state possesses even
parity under the same condition. A store scheme for entangled particle pair is
proposed.Comment: 4 pages, 7 figure
Leptonic anomalous gauge couplings detection on electron positron colliders
We studied the dimension-6 leptonic anomalous gauge couplings in the
formulation of linearly realized gauge symmetry effective Lagrangian and
investigated the constraints on these anomalous couplings from the existed
experimental data including LEP2 and / boson decay. Some bounds of
on four relevant anomalous couplings are given by the
Z factories. We studied the sensitivity of testing the leptonic anomalous
couplings via the process at future linear
colliders. We discussed different sensitivities to anomalous couplings at
polarized and unpolarized colliders, respectively, with 500 GeV and 1
TeV collision energy. Our results show that the a 500 GeV ILC can provide a
test of the anomalous couplings, with the same relative uncertainty of cross
section measurement, of , and a 1 TeV ILC can test the
anomalous couplings of .Comment: 18 pages, 9 figures. feynman rules of and vertex
corrected; correspongding results (of and ) revise
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