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Berry-Stark-Zeeman Effect on Spectral Lineshape in a Magnetized Plasma
Mosbah Difallah,Nacira Bedida,Mohammed Tayeb Meftah 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.63 No.6
Using the adiabatic approximation (AA), we have derived the dipolar autocorrelation function(DACF) for a hydrogen-like atom in an adiabatically cone-rotating electric field around an externaluniform magnetic field. The DACF serves to compute the intensity of radiation in plasmas. Wehave found that the (AA) leads to the appearance of the Berry phase in the expression for theintensity of the spectral line in plasmas.
HLPSP: A Hybrid Live P2P Streaming Protocol
( Chourouk Hammami ),( Imen Jemili ),( Achraf Gazdar ),( Abdelfettah Belghith ),( Mohamed Mosbah ) 한국인터넷정보학회 2015 KSII Transactions on Internet and Information Syst Vol.9 No.3
The efficiency of live Peer-to-Peer (P2P) streaming protocols depends on the appropriateness and the management abilities of their underlying overlay multicast. While a tree overlay structure confines transmission delays efficiently by maintaining deterministic delivery paths, an overlay mesh structure provides adequate resiliency to peers dynamics and easy maintenance. On the other hand, content freshness, playback fluidity and streaming continuity are still challenging issues that require viable solutions. In this paper, we propose a Hybrid Live P2P Streaming Protocol (HLPSP) based on a hybrid overlay multicast that integrates the efficiency of both the tree and mesh structures. Extensive simulations using OMNET++ are conducted to investigate the efficiency of HLPSP in terms of relevant performance metrics, and position HLPSP with respect to DenaCast the enhanced version of the well-known CoolStreaming protocol. Simulation results show that HLPSP outperforms DenaCast in terms of startup delay, end-to-end delay, play-back delay and data loss.