The French National Audiovisual Institute (INA) is in charge of archiving continuously the video stream of every French television channel. In order to provide an access to particular programs in these streams, each program must be described. Presently, a stream is manually structured and annotated. Our work focuses on the use of electronic program guides to structure and annotate a video strea...

The problem of robust decoding of VLC encoded streams in presence of channel errors is essentially a problem of joint estimation and segmentation of the bit stream. A correct segmentation and estimation of a VLC compressed stream in presence of channel noise requires to re-augment the redundancy of the stream. Instead of using a channel code, the approach described here dedicates specifically e...

The Shrinking Generator and the Alternating Step Generator are two of the most well known clock-controlled stream ciphers. We consider correlation attacks on these two generators, based on an identified relation to the decoding problem for the deletion channel and the insertion channel, respectively. Several ways of reducing the decoding complexity are proposed and investigated, resulting in “d...

In 1820, the lower Canadian River meandered through a densely forested floodplain. By 1898, most of the floodplain had been cleared for agriculture and changes in channel geometry and specific stream power followed, particularly channel widening and straightening with a lower potential specific stream power. In 1964, a large upstream hydropower damwas constructed, which changed the flow regime ...

This paper proposes an effective channel management framework which analyzes the user channel surfing behavior and constructs fast channel change stream consisting of user preferred channels. The usual channel delay is obliterated if the user requested channel is found at the Set-Top-Box (STB).

Jump registers were recently proposed [SASC04] as building blocks for stream ciphers. In this paper a construction based on these principles is described. The proposed encryption primitive is a synchronous stream cipher accommodating a key of 128 bits and an IV of 64 up to 162 bits, or an 80-bit key and 32 to 108 bit IV. Version 3 comes as a final submission for the second phase of the eSTREAM ...

Documenting the effects of agricultural land retirement on stream-sediment sources is critical to identifying management practices that improve water quality and aquatic habitat. Particularly difficult to quantify are the effects from conservation easements that commonly are discontinuous along channelized streams and ditches throughout the agricultural midwestern United States. Our hypotheses ...