63,524 research outputs found
Effects of threshold resummation
We investigate effects of threshold resummation of logarithmic corrections
in Mellin space quantitatively. Threshold resummation leads to
enhancement of next-to-leading-order QCD predictions for jet production at
large jet transverse energy, which is in the trend indicated by experimental
data. We show that this enhancement is completely determined by the behavior of
threshold resummation at small , the region where hierachy among different
powers of is lost and current next-to-leading-logarithm resummation is
not reliable. Our analysis indicates that more accurate threshold resummation
formalism should be developed in order to obtain convincing predictions.Comment: 12 pages, 2 figure
Combating False Reports for Secure Networked Control in Smart Grid via Trustiness Evaluation
Smart grid, equipped with modern communication infrastructures, is subject to
possible cyber attacks. Particularly, false report attacks which replace the
sensor reports with fraud ones may cause the instability of the whole power
grid or even result in a large area blackout. In this paper, a trustiness
system is introduced to the controller, who computes the trustiness of
different sensors by comparing its prediction, obtained from Kalman filtering,
on the system state with the reports from sensor. The trustiness mechanism is
discussed and analyzed for the Linear Quadratic Regulation (LQR) controller.
Numerical simulations show that the trustiness system can effectively combat
the cyber attacks to smart grid.Comment: It has been submitted to IEEE International Conference on
Communications (ICC
- …