Abstracts

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2017-09-26
12:29
[FZJ-2017-06751] Abstract
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Distributed correlations in motor cortex suggest virtually unstable linearized dynamics
Bernstein Conference, Meeting locationGöttingen, Germany, 12 Sep 2017 - 15 Sep 20172017-09-122017-09-15
Despite the large amount of shared input between nearby neurons in cortical circuits, massively parallel spiking recordings of various in vivo networks exhibit pairwise covariances in ensembles of neuronal spike trains that are on average close to zero [1]. The low average has been well understood in terms of active decorrelation by inhibitory feedback [2,3] in networks that operate far away from the critical point, which marks the onset of avalanche-like activity [4]. [...]

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2017-08-31
09:15
[FZJ-2017-06231] Abstract
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Spectral MSE Study on HSX and Non-Statistical Beam Level Populations
APS Plasma Physics Division, Meeting locationNew Orleans, USA, 27 Oct 2014 - 31 Oct 20142014-10-272014-10-31
A spectral MSE diagnostic is investigated for measuring Er and B field in the plasma. This method relies on the spectral fitting of the Stark multiplet components and knowledge of the excited beam level populations. [...]

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2017-08-28
18:14
[FZJ-2017-06147] Abstract
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Embedding the Elephant data analysis framework into a collaborative environment
Neuroinformatics 2017, Meeting locationKuala Lumpur, Malaysia, 20 Aug 2017 - 21 Aug 20172017-08-202017-08-21
Heterogeneous data from electrophysiological experiments and spiking neural network simulations exhibits a level of complexity that puts tools to design workflows for managing data acquisition and analysis in a reproducible way in high demand [1]. Here, following [2], we demonstrate a use case in the framework of the Human Brain Project (HBP) that supports such analysis workflows in a collaborative fashion by combining various software components hosted on a common platform. [...]

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2017-08-28
18:08
[FZJ-2017-06145] Abstract
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Designing collaborative workflows for reproducible data analysis in electrophysiology based on the Elephant analysis framework
Neuroscience 2017, Meeting locationMakuhari, Japan, 20 Jul 2017 - 23 Jul 20172017-07-202017-07-23
In the previous decade the degree of complexity in analyzing massively parallel, heterogeneous data from electrophysiological experiments and network simulations has reached levels where novel tools that form workflows for managing data and metadata acquisition, pre-processing, and analysis in a reproducible fashion are in high demand [1]. The Human Brain Project (HBP) aims at creating and operating a scientific research infrastructure for the neurosciences to address these needs for such integrative software environments.Here, by means of a collaborative case study, we outline how the HBP framework supports analysis workflows by combining various software components hosted on a common platform [...]

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2017-05-28
15:47
OpenAccess [FZJ-2017-03804] Abstract
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Estimation of Subsurface Cylindrical Object Properties from GPR Full-waveform Inversion
The 9th International Workshop on Advanced Ground Penetrating Radar, IWAGPR2017, Meeting locationEdinburgh, United Kindom, 28 Jun 2017 - 30 Jun 20172017-06-282017-06-30
Precise radius estimation is of high interest for rebar and pipe characterization but very challenging. In this work, we present a novel 3D frequency-domain full-waveform inversion (FWI) approach with which the geometrical information of subsurface cylindrical objects and the dielectric properties of the penetrating medium are simultaneously extracted from ground penetrating radar (GPR) data. [...]
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2017-04-18
08:07
OpenAccess [FZJ-2017-03096] Abstract
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Overview of Active Beam Spectroscopy developments for ITER
2nd European Conference on Plasma Diagnostics, Meeting locationBordeaux, France, 18 Apr 2017 - 21 Apr 20172017-04-182017-04-21
Active Beam Spectroscopy diagnostics on ITER measure spectra of light emitted due to plasma interaction with the beams of neutral hydrogen isotopes injected into the plasma. They fall in roughly 3 groups: -Charge Exchange Recombination Spectroscopy (CXRS), analyses line emission of plasma ions that receive electrons from the neutral beam atoms. [...]
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2017-04-06
19:39
[FZJ-2017-02841] Abstract
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Parameter identification for a physic-chemical battery model via electrochemical impedance spectroscopy
Kraftwerk Batterie 2017, Meeting locationAachen, Germany, 29 Mar 2017 - 30 Mar 20172017-03-292017-03-30
Today lithium-ion batteries are used in many applications, e.g. smart phones, electric vehicles [...]

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2017-04-06
19:33
[FZJ-2017-02840] Abstract
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An in-depth view into the Tesla Model S modulePart two: Module characterization and comparison to other state of the art EV battery systems
Kraftwerk Batterie 2017, Meeting locationAachen, Germany, 29 Mar 2017 - 30 Mar 20172017-03-292017-03-30
In current research immense effort is taken into account to improve known battery technologies like lithium-Ion batteries, but also new battery concepts are investigated. In both cases the question often arises, to which extend new concepts can actually compete with state-of-the-art solutions in nowadays applications and which improvements are required in order to achieve compatibility. [...]

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2017-04-04
08:46
[FZJ-2017-02591] Abstract
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Distributions of covariances as a window intothe operational regime of neuronal networks
NWG meeting 2017, Meeting locationGöttingen, Germany, 22 Mar 2017 - 25 Mar 20172017-03-222017-03-25
Massively parallel recordings of spiking activity in cortical networks show that spike count covariances vary widely across pairs of neurons [Ecker et al., Science (2010)]. Their low average is well understood [Renart et al., Science (2010), Tetzlaff et al., PLoS CB (2012)], but an explanation for the wide distribution in relation to the static (quenched) disorder of the connectivity in recurrent random networks was so far elusive. [...]

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2017-03-27
15:44
[FZJ-2017-02429] Abstract
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Towards reproducible workflows for electrophysiology data using the Elephant analysis framework
12th Meeting of the German Neuroscience Society, Meeting locationGöttingen, Germany, 22 Mar 2017 - 25 Mar 20172017-03-222017-03-25
The degree of complexity when working with data from electrophysiological experiments has reached a level where well-structured and defined workflows for data and metadata acquisition, pre-processing, and subsequent analysis are becoming a necessity. The implementations of such workflows are often heterogeneous across researchers and experiments, dependent on custom-written codes, and far from being automatized. [...]

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