The datastream model of computation has proven a valuable tool in developing algorithms for processing large amounts of data in small space. This survey examines an extension of this model that deals with uncertain data, called the probabilistic stream model. As in the standard setting, we are presented with a stream of items, with no random access to the data. However, each item is represented...

Terminal restriction fragment length polymorphism and 16S rRNA gene sequencing were used to explore the community composition of bacterial communities in biofilms on sediments (epipssamon) and rocks (epilithon) in stream reaches that drain watersheds with contrasting lithologies in the Noatak National Preserve, Alaska. Bacterial community composition varied primarily by stream habitat and secon...

The linear complexity and autocorrelation values are very important measures for evaluating the randomness of sequences. The engineering interpretation of linear complexity (LC) is as the length of the shortest linear feedback shift register (LFSR) that generates the sequence. By BerlekampMassey algorithm, if the linear complexity of a key stream is L, then 2L consecutive characters of the sequ...

since direct experimental evidence is not available, this must be verified through a modeling approach, providedadequate data be available. many statistical methods are used to study the relation between independent anddependent variables.this research was carried out at the western part of jazmurian basin tlocated in the southeast ofiran. in this paperused ten physical characteristics such as ...

We investigate the stream merging problem for mediaon-demand servers. Clients requesting media from the server arrive by a Poisson process, and delivery to the clients starts immediately. Clients are prepared to receive up to two streams at any time, one or both being fed into a bu er cache. A multicast mechanism exists that allows multiple clients to receive the same stream. We present an on-l...

We investigate the stream merging problem for mediaon-demand servers. Clients requesting media from the server arrive by a Poisson process, and delivery to the clients starts immediately. Clients are prepared to receive up to two streams at any time, one or both being fed into a bu er cache. A multicast mechanism exists that allows multiple clients to receive the same stream. We present an on-l...

Nowadays, the most important engine to provide confidentiality is encryption. Therefore, the classical and modern ciphers are not suitable for huge quantity of data in real-time environment. Selective encryption (SE) is an approach to encode only the most important portion of the data in order to provide a proportional privacy and to reduce computational requirements. The objective of our work ...