Air reconnaissance: recent results, 31

Recent Results from the Kascade Air Shower Experiment

31 30 4 Experimental Results

The general problem of unsupervised textured image segmentation remains a fundamental but not entirely solved issue in image analysis. Many studies have proven that statistical model-based texture segmentation algorithms yield good results provided that the model parameters and the number of regions be known a priori. In this paper, we present an unsupervised texture segmentation method which d...

Recent results from CANGAROO

The CANGAROO-III telescope system for very-high-energy gamma-ray astrophysics consists of four 10-m atmospheric Cherenkov telescopes located near Woomera, South Australia. The construction of the fourth telescope was completed in summer 2003, and stereoscopic observations have been in progress since March 2004. Here we report on the status of the system and some recent results from CANGAROO-III...

Recent Results from ARGUS

Some recent results are reported from the ARGUS experiment, operated at the e+estorage ring DORIS Il at DESY. In an updated analysis of semileptonic b u decays direct evidence for such transitions was obtained through reconstruction of a complete event. A study of the lepton energy spectra in +-+ E-UP and z+ P-I+ decays yielded a value for the Michel parameter which is in good agreement with a ...

Gallager Codes – Recent Results

In 1948, Claude Shannon posed and solved one of the fundamental problems of information theory. The question was whether it is possible to communicate reliably over noisy channels, and, if so, at what rate. He defined a theoretical limit, now known as the Shannon limit, up to which communication is possible, and beyond which communication is not possible. Since 1948, coding theorists have attem...