The Biometric Gaussian Stream (BGS) cryptosystem was extended by extensive research experimentation. Using this system, complexity is added to an image by passing it through a Gaussian noise function. This function is applied with specific parameters for the mean and variance, which also works as a parallel key. To implement a stream cipher BGS with help of biometric images, the Initial Conditi...

In a turbulent boundary layer over a smooth flat plate with zero pressure gradient, the intermediate structure between the viscous sublayer and the free stream consists of two layers: one adjacent to the viscous sublayer and one adjacent to the free stream. When the level of turbulence in the free stream is low, the boundary between the two layers is sharp, and both have a self-similar structur...

Generally, a stream cipher is a symmetric key cipher where plaintext bits are combined with a pseudorandom Keystream bits to achieve desired cipher text. In our paper, we are proposing a cryptosystem named Biometric-GaussianStream(BGS) cryptosystem. It is basically the combination of Gaussian noise and stream ciphers. In this system first, we pass an image through Gaussian noise function to add...

Life history theory seeks to explain how environmental variation selects for patterns of investment in growth and survival relative to production and survival of offspring. Seasonal variations in rainfall and temperature provide environmental cues for spawning by many tropical freshwater fishes. To investigate environment–life history associations, we conducted a one-year study of Astyanax inte...

Speaker tracking is the process of following who says something in an audio stream. In the case the audio stream is a recording of broadcast news, speaker identity can be an important meta-data for building digital libraries. Moreover, the segmentation and classification of the audio stream in terms of acoustic contents, bandwidth and speaker gender allow to filter out portions of the signal wh...

We present a novel algorithm for the geometric extraction of stream volume segmentation for visualization of grid-less flow simulation. Our goal is the segmentation of different paths through a mixing tube where the flow is represented by scattered point sets approximated with moving least squares. The key challenges are the watertight construction of boundary representations from separatrices....

From 06.05. to 11.05.2007, the Dagstuhl Seminar 07191 Event Processing was held in the International Conference and Research Center (IBFI), Schloss Dagstuhl. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put...

Land use changes within watersheds can have large effects on stream ecosystems, but the mechanistic basis of those effects remains poorly understood. While changes to population size presumably reflect underlying variation in organismal health and condition, such individual-level metrics are rarely evaluated in the context of ecosystem disturbance. To address this deficiency, we combined physio...

J . DAVID ALLAN*, LESTER L. YUAN , PAUL BLACK , TOM STOCKTON, PETER E. DAVIES § , REGINA H. MAGIEROWSKI AND STEVE M. READ School of Natural Resources & Environment, University of Michigan, Ann Arbor, MI, U.S.A. US Environmental Protection Agency, Office of Research and Development, National Center for Environmental Assessment, Washington, DC, U.S.A. Neptune and Company, Inc., Lakewood, CO, U.S....