Concept

Dissipation factor

Related publications (80)

Energy dissipation of flows in vegetated patches with spatially varying stem densit

To establish a compromise between ecological benefits and hydraulic flood risk, one needs a deep knowledge of fluid mechanics. In particular, and in what concerns energy loss, it is necessary to possess a good understanding of the processes that govern the ...

Taylor & Francis Group, CRC Press2012

Periodic orbits near onset of chaos in plane Couette flow

Tobias Klaus Kreilos

We track the secondary bifurcations of coherent states in plane Couette flow and show that they undergo a periodic doubling cascade that ends with a crisis bifurcation. We introduce a symbolic dynamics for the orbits and show that the ones that exist fall ...

2012

Current-Mode Analog Adaptive Mechanism for Ultralow-Power Neural Networks

Rafal Tomasz Dlugosz

Neural networks (NNs) implemented at the transistor level are powerful adaptive systems. They can perform hundreds of operations in parallel but at the expense of a large number of building blocks. In the case of analog realization, an extremely low chip a ...

Institute of Electrical and Electronics Engineers2011

Density of states deduced from ESR measurements on low-dimensional nanostructures; benchmarks to identify the ESR signals of graphene and SWCNTs

László Forró, Péter Szirmai, Ferenc Simon

Electron spin resonance (ESR) spectroscopy is an important tool to characterize the ground state of conduction electrons and to measure their spin-relaxation times. Observing ESR of the itinerant electrons is thus of great importance in graphene and in sin ...

2011

Coupling molecular dynamics with finite elements. Projective methods issues at finite temperature

Jean-François Molinari, Guillaume Anciaux, Srinivasa Babu Ramisetti

In the context of coupling methods that match molecular dynamics with finite elements, we focus on the finite temperature and heat rates treatment done by Bridging Domain approaches. The energy dissipation occurring due to the projection of the fine scale ...

2011

Dielectric measurements of tropical wood

Juan Ramon Mosig, Jean-François Zürcher, Olivier Videme Bossou

The aim of this paper is to determine the dielectric characteristics of tropical wood species at microwaves frequency in order to use them as planar antenna substrate. The measurements have been done on dried wood in the frequency range 8.2-12.4 GHz The su ...

2010

Numerical Simulation of Nonlinear Self Oscillations of a Full Load Vortex Rope

François Avellan, Christophe Nicolet, Pierre Maruzewski, Sébastien Alligné, Vlad Hasmatuchi, Nicolas Ruchonnet

Self excited instabilities or oscillations of a cavitating full load vortex rope occur due to an interaction between the gas volume and the acoustic waves. From the onset of the oscillations, the amplitudes grow until they reach a maximum, called the “limi ...

2009

Design and Optimization of Operational Amplifiers for SC Systems - a Comparative Study in CMOS 0.8 μm, 0.35 μm, 0.18 μm Technologies

Rafal Tomasz Dlugosz

Design and optimization of a simple but efficient operational amplifier (OA) for switched-capacitor finite impulse response (SC FIR) filters are presented. The main design criteria are: proper characteristics for application in SC FIR filters, simplicity o ...

2009

Micromachined tunable devices based on silicon integrated BaxSr1-xTiO3 thin films

Andreas Nöth

Thin Film Bulk Acoustic Wave Resonators (TFBARs) had been developed a decade ago and since then were implemented extensively in mobile communications devices. The "heart" of a TFBAR consists of a piezoelectric film that operates as an acousto-electric tran ...

EPFL2009

Novel Electromechanical Phenomena at the Nanoscale: Phenomenological Theory and Atomistic Modeling

Alexander Tagantsev

In the past two decades, the fact that “small is different” has been established for a wide variety of phenomena, including electrical, optical, magnetic, and mechanical behavior of materials. However, one largely untapped but potentially very important ar ...

2009

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