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We analyze the relation of notion a pluri-Lagrangian system, which recently emerged in theory integrable systems, to classical variational symmetry, due E. Noether. treat mechanical systems and show that, for any Lagrangian system with $m$ commuting symmetries, one can construct 1-form $(m+1)$-dimensional time, whose multi-time Euler-Lagrange equations coincide original supplied evolutionary fl...

Microchannels are important devices to improve the heat exchange in several engineering applications as heat, ventilation and air conditioning, microelectronic cooling, power generation systems others. The present work performs a numerical study of microchannel with two trapezoidal blocks subjected laminar flows, aiming analyze influence boiling process on geometric configuration microchannel. ...

An analytical method is developed for the reconstruction of velocity profiles using measured potential distributions obtained around the boundary of a multi-electrode electromagnetic flow meter (EMFM). The method is based on the Discrete Fourier Transform (DFT), and is implemented in Matlab. The method assumes the velocity profile in a section of a pipe as a superposition of polynomials up to 6...

In the requirements elicitation phase, operation flows of software are often defined by scenarios. It is necessary to define appropriate operation flows as scenarios in terms of easily comprehended operation flows, efficiency, etc. Then scenarios are implemented as software Graphical User Interfaces (GUIs). If the operation flows are defined inappropriately, the implemented GUIs may require mod...

In this paper, an efficient multi-objective model is proposed to solve time-cost trade off problem considering cash flows. The proposed multi-objective meta-heuristic is based on Ant colony optimization and is called Non Dominated Archiving Ant Colony Optimization (NAACO). The significant feature of this work is consideration of uncertainties in time, cost and more importantly interest rate. A ...

A multi-block overset grid method is presented to accurately simulate viscous flows around complex configurations. A combination of multi-block and overlapping grids is used to discretize the flow domain. A hierarchical grid system with layers of grids of varying resolution is developed to ensure inter-grid connectivity within a framework suitable for multi-grid and parallel computations. At ea...

Traditional network-based intrusion detection systems using deep packet inspection are not feasible for modern high-speed networks due to slow processing and inability to read encrypted packet content. As an alternative to packetbased intrusion detection, researchers have focused on flow-based intrusion detection techniques. Flow-based intrusion detection systems analyze IP flow records for att...

Recent advancements in the design and development of small optical sensors have made it possible to investigate complex flows. These include flows with bubbles and polymers at high Reynolds numbers which are present in drag reduction experiments. We have developed optical sensors for use in scaled and full-scale experiments, both in laboratory and at sea conditions. These sensors have been test...