Results 221 to 230 of about 466,753 (264)

Modeling in-network aggregation in VANETs

IEEE Communications Magazine, 2011
The multitude of applications envisioned for vehicular ad hoc networks requires efficient communication and dissemination mechanisms to prevent network congestion. In-network data aggregation promises to reduce bandwidth requirements and enable scalability in large vehicular networks.
Stefan Dietzel, Frank Kargl, Geert J. Heijenk, Florian Schaub   +3 more
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Models for Colloidal Aggregation

Annual Review of Physical Chemistry, 1988
Computer simulations have been used for more than a quarter of a century to develop a better understanding of non equilibrium growth and aggrega­ tion processes. Important early examples include VoId's ballistic deposi­ tion model for aggregation and sedimentation (1, 2), Sutherland's ballistic cluster-cluster aggregation model for floc formation (3 ...
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Aggregation and Stability in Metapopulation Models

The American Naturalist, 1992
We analyze a metapopulation model of the interactions between Lotka-Volterra-type prey and predators that occur in two environmentally distinguishable patches and are linked by migration. Environmental differences between the patches tend to stabilize the otherwise neutrally stable model by causing the per capita immigration rate on a patch to be ...
Murdoch, W.W, Briggs, C.J., Nisbet, R.M., Gurney, William, Stewart-Oaten, A.   +4 more
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The Aggregate Model

1997
Abstract Just as in Part I, by letting the size of the population grow, under suitable assumptions on the micro model, the variance ratio of the common to the idiosyncratic component can be made bigger than any preassigned real number.
Mario Forni, Marco Lippi
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Model Checker for Recursive Aggregates

Proceedings of the TwentySecond International Conference on Principles of Knowledge Representation and Reasoning
Model checking for disjunctive logic programs is a co-NP-complete task for which two main state-of-the-art approaches exist: one based on the unsatisfiability of SAT formulas derived from program reducts, and another based on unfounded sets. Although both are effective and efficient, their original formulations do not support recursive aggregates.
Alviano M., Dodaro C., Fiorentino S.
openaire   +1 more source

Aggregative modeling of Wiener systems

2016 21st International Conference on Methods and Models in Automation and Robotics (MMAR), 2016
A Volterra series is a basic tool in the non-parametric approach to the nonlinear systems modelling, which posses a facility of approximating a large family of such systems, including an important subclass of block-oriented structures. In this paper we investigate a Volterra representation of the Wiener system and study an upper bound of an error ...
Szymon Lagosz, Przemyslaw Sliwinski, Pawel Wachel   +2 more
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Aggregated Dynamic Background Modeling

2006 International Conference on Image Processing, 2006
Standard practices in background modeling learn a separate model for every pixel in the image. However, in dynamic scenes the connection between an observation and the place where it was observed is much less important and is usually random. For example, a wave observed in an ocean scene could easily have been observed at another place in the image ...
Amit Adam, Ehud Rivlin, Ilan Shimshoni
openaire   +1 more source

On the model of colloid aggregates and aggregating colloids

The Journal of Chemical Physics, 1992
Computer simulations were used to investigate the power law dependence of the elastic compression modulus and the yield stress (∝R−γ) of two-dimensional (2D) and three-dimensional (3D) aggregates of special type (fractal trees without loops on square and simple cubic lattices) on the radius R of the aggregates. The elastic forces between particles were
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Aggregative Modeling of Nonlinear Systems

IEEE Signal Processing Letters, 2015
In the note we examine the recently introduced aggregation modeling technique in a system identification context. First, we show that its finite sample size properties are preserved for any nonlinear SISO system with finite memory. Then, using as an example the peripheral auditory model we demonstrate that it allows to find effective Volterra ...
Pawel Wachel, Przemyslaw Sliwinski
openaire   +1 more source

Kinetic Model for Erythrocyte Aggregation

Blood Cells, Molecules, and Diseases, 1999
It is well known that light transmission through blood is the most widely utilized method for the study of erythrocyte aggregation. The curves obtained had been considered empirically as exponential functions. In consequence, the process becomes characterized by an only parameter that varies with all the process factors without discrimination.
S M, Bertoluzzo, A, Bollini, M, Rasia, A, Raynal   +3 more
openaire   +2 more sources