Publications related to Gyrokinetic full-f particle-in-cell simulations on open field lines with PICLS

Qual o sentido da Geografia Cultural ?

Cultural Recebido em 18 de junho de 2015 Aprovado em 19 de junho de 2015 geography proposes an apparently innovative project but it actually raises a dual epistemo- logical issue. First of all, is it a new field inside geography or a school of thought that ...

2015

Time scale analysis of bedload discharge over steep slopes: from intermittency to white noise.

Christophe Ancey, Joris Heyman, François Mettra, Hongbo Ma

Bedload transport remains largely unpredictable in steep slope rivers. Comparing experimental data obtained in a steep slope flume and a stochastic model, we show that bedload discharge statistics strongly depend on the measurement time and spatial scale. ...

2013

Extension of operation regimes and investigation of three-dimensional currentless plasmas in the Large Helical Device

Wilfred Anthony Cooper, Terunobu Akiyama, Kenji Tanaka

The progress of physical understanding as well as parameter improvement of net-current-free helical plasma is reported for the Large Helical Device since the last Fusion Energy Conference in Daejeon in 2010. The second low-energy neutral beam line was inst ...

Iop Publishing Ltd2013

Turbulent regimes in the tokamak scrape-off layer

Paolo Ricci, Joaquim Loizu Cisquella, Sébastien Jolliet, Federico David Halpern, Annamaria Mosetto

We identify the turbulent regimes in the tokamak scrape-off layer as a function of plasma resistivity, electron to ion mass ratio, safety factor, and magnetic shear. We find that two main instabilities drive turbulence in the SOL: Drift Waves, with their r ...

2013

On the Convergence Speed of Spatially Coupled LDPC Ensembles

Vahid Aref

Spatially coupled low-density parity-check codes show an outstanding performance under the low-complexity belief propagation (BP) decoding algorithm. They exhibit a peculiar convergence phenomenon above the BP threshold of the underlying non-coupled ensemb ...

2013

Generalized Spatial Regression with Differential Penalization

Matthieu Wilhelm

We propose a novel method for the analysis of spatially distributed data from an exponential family distribution, able to efficiently treat data occurring over irregularly shaped domains. We consider a generalized linear framework and extend the work of Sa ...

2013

Sampling High-Dimensional Bandlimited Fields on Low-Dimensional Manifolds

Martin Vetterli, Jayakrishnan Unnikrishnan

Consider the task of sampling and reconstructing a bandlimited spatial field in

\Re^2

using moving sensors that take measurements along their path. It is inexpensive to increase the sampling rate along the paths of the sensors but more expensive to incre ...

Institute of Electrical and Electronics Engineers2013

Potential of a plasma bound between two biased walls

Paolo Ricci, Christian Gabriel Theiler, Joaquim Loizu Cisquella, Julien Stanislas Pierre Dominski

An analytical study is presented for an one-dimensional, steady-state plasma bound between two perfectly absorbing walls that are biased with respect to each other. Starting from a description of the plasma sheaths formed at both walls, an expression relat ...

American Institute of Physics2012

Localization of Diffusive Sources Using Spatiotemporal Measurements

Martin Vetterli, Yue Lu, Pier Luigi Dragotti

Consider a diffusion field induced by a finite number of localized and instantaneous sources. In this paper, we study the problem of estimating these sources (including their intensities, spatial locations, and activation time) from the spatiotemporal samp ...

2011

Non-unique flows in macroscopic first-order intersection models

Gunnar Flötteröd

Currently, most intersection models embedded in macroscopic Dynamic Network Loading (DNL) models are not well suited for urban and regional applications. This is so because so-called internal intersection supply constraints, bounding flows due to crossing ...

2011

Gyrokinetic full-f particle-in-cell simulations on open field lines with PICLS

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Qual o sentido da Geografia Cultural ?

Time scale analysis of bedload discharge over steep slopes: from intermittency to white noise.

Extension of operation regimes and investigation of three-dimensional currentless plasmas in the Large Helical Device

Turbulent regimes in the tokamak scrape-off layer

On the Convergence Speed of Spatially Coupled LDPC Ensembles

Generalized Spatial Regression with Differential Penalization

Sampling High-Dimensional Bandlimited Fields on Low-Dimensional Manifolds

Potential of a plasma bound between two biased walls

Localization of Diffusive Sources Using Spatiotemporal Measurements

Non-unique flows in macroscopic first-order intersection models

Qual o sentido da Geografia Cultural ?

On the Convergence Speed of Spatially Coupled LDPC Ensembles

Generalized Spatial Regression with Differential Penalization

Potential of a plasma bound between two biased walls

Localization of Diffusive Sources Using Spatiotemporal Measurements

Non-unique flows in macroscopic first-order intersection models

Extension of operation regimes and investigation of three-dimensional currentless plasmas in the Large Helical Device

Time scale analysis of bedload discharge over steep slopes: from intermittency to white noise.

Turbulent regimes in the tokamak scrape-off layer

Sampling High-Dimensional Bandlimited Fields on Low-Dimensional Manifolds