Squeezing out the Last Micron

EFM coding: Squeezing the last bits

Runlength-limited (RLL) codes have found widespread usage in optical and magnetic recording products. Specifically, the RLL codes EFM and its successor, EFMPlus, are used in the Compact Disc (CD) and the Digital Versatile Disc (DVD), respectively. EFMPlus offers a 6% increase in storage capacity with respect to EFM. The work reports on the feasibility and limits of EFM-like codes that offer an ...

Squeezing the Most Out of ATM

Even though ATM seems to be clearly the wave of the future, one performance analysis indicates that the combination of stringent performance requirements (e.g., 10 − 9 cell blocking probabilities), moderate-size buffers and highly bursty traffic will require that the utilization of the network be quite low. That performance analysis is based on asymptotic decay rates of steady-state distributio...

Squeezing the Most out of Traffic Classification

Accurate classification of traffic flows is an essential step for administrators to detect intrusion or malicious attacks, forbidden applications, or simply new applications which may impact the future provisioning of network resources. In this work four major topics are considered in connection with traffic classification activities. First, a novel validation method is proposed for characteriz...

Squeezing the best out of stroke care.

Squeezing lepton pairs out of broken symmetries

We discuss two possible signatures of symmetry breaking that can appear in dilepton spectra, as measured in relativistic heavy ion collisions. The first involves scalar-vector meson mixing and is related to the breaking of Lorentz symmetry by a hot medium. The second is related to the breaking of Furry’s theorem by a charged quark-gluon plasma. Those signals will be accessible to upcoming measu...