cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
HR-SAR-Net: A Deep Neural Network for Urban Scene Segmentation from High-Resolution SAR Data
Creators: name: Wang, Xiaying
name: Cavigelli, Lukas
name: Eggimann, Manuel
name: Magno, Michele
name: Benini, Luca
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Synthetic aperture radar (SAR) data is becoming increasingly available to a wide range of users through commercial service providers with resolutions reaching 0.5m/px. Segmenting SAR data still requires skilled personnel, limiting the potential for large-scale use. We show that it is possible to automatically and reliably perform urban scene segmentation from next-gen resolution SAR data (0.15m/px) using deep neural networks (DNNs), achieving a pixel accuracy of 95.19% and a mean IoU of 74.67% with data collected over a region of merely 2.2km${}^2$. The presented DNN is not only effective, but is very small with only 63k parameters and computationally simple enough to achieve a throughput of around 500Mpx/s using a single GPU. We further identify that additional SAR receive antennas and data from multiple flights massively improve the segmentation accuracy. We describe a procedure for generating a high-quality segmentation ground truth from multiple inaccurate building and road annotations, which has been crucial to achieving these segmentation results.
A note on conformally compactified connection dynamics tailored for anti-de Sitter space
Creators: name: Bodendorfer, Norbert
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A framework conceptually based on the conformal techniques employed to study the structure of the gravitational field at infinity is set up in the context of loop quantum gravity to describe asymptotically anti-de Sitter quantum spacetimes. A conformal compactification of the spatial slice is performed, which, in terms of the rescaled metric, has now finite volume, and can thus be conveniently described by spin networks states. The conformal factor used is a physical scalar field, which has the necessary asymptotics for many asymptotically AdS black hole solutions.
description: 8 pages; v2: journal version, title changed, minor clarifications and comments added
PV Modules Inspection through Photoluminescence in Daylight Conditions
Creators: name: San José, L.J.
name: Herrero, R.
name: Antón Hernández, I.
name: Sala, G.
Publisher: name: WIP
Year: 2018
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 35th European Photovoltaic Solar Energy Conference and Exhibition; 1376-1380
description: As PV modules are exposed to outdoor conditions, inspection proceedings are needed in order to evaluate
the possible degradation that modules can suffer. The main inspection methods look for non-invasive procedures that
allow obtaining inspection data while modules are operating on-field. Photoluminescence (PL) uses recombination
phenomena that take place while the module is exposed at light to get information of the cell performance. A method
for inspecting PV modules at adverse (low irradiance) light conditions based on outdoor PL is proposed in this work.
The outdoor PL measurements obtained are compared against electroluminescence measurements and indoor PL in
order to contrast the accuracy of the measurements.
Quasi-Limiting Behavior of Drifted Brownian Motion
Creators: name: Lee, SangJoon
name: Ben-Ari, Iddo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: A Quasi-Stationary Distribution (QSD)for a Markov process with an almost surely hit absorbing state is a time-invariant initial distribution for the process conditioned on not being absorbed by any given time. An initial distribution for the process is in the domain of attraction of some QSD $ν$ if the distribution of the process a time $t$, conditioned not to be absorbed by time $t$ converges to $ν$. In this work study mostly Brownian motion with constant drift on the half line $[0,\infty)$ absorbed at $0$. Previous work by Martinez et al. identifies all QSDs and provides a nearly complete characterization for their domain of attraction. Specifically, it was shown that if the distribution a well-defined exponential tail (including the case of lighter than any exponential tail), then it is in the domain of attraction of a QSD determined by the exponent. In this work we 1. Obtain a new approach to existing results, explaining the direct relation between a QSD and an initial distribution in its domain of attraction. 2. Study the behavior under a wide class of initial distributions whose tail is heavier than exponential, and obtain no-trivial limits under appropriate scaling.
description: 32 pages, 4 figures, 2 tables. Updated Nov 18 2020 under the recommendation of anonymous referee (correcting errors, omitted references, etc.)
Search for dark matter and supersymmetry with a compressed mass spectrum in the vector boson fusion topology in proton-proton collisions at sqrt(s) = 8 TeV
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A first search for pair production of dark matter candidates through vector boson fusion in proton-proton collisions at sqrt(s) = 8 TeV is performed with the CMS detector. The vector boson fusion topology enhances missing transverse momentum, providing a way to probe supersymmetry also in the case of a compressed mass spectrum. The data sample corresponds to an integrated luminosity of 18.5 inverse femtobarns recorded by the CMS experiment. The observed dijet mass spectrum is consistent with the standard model expectation. In an effective field theory, dark matter masses are explored as a function of contact interaction strength. The most stringent limit on bottom squark production with mass below 315 GeV is also reported, assuming a 5 GeV mass difference with respect to the lightest neutralino.
description: Replaced with the published version. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/SUS-14-019/index.html
Life Cycle Assessment of Perovskite Solar Cells in Single Junction and Tandem Configuration
Creators: name: Gomez Trillos, J.C.
name: Brand, U.
name: Peterhammer, S.
name: Vogt, T.
Publisher: name: WIP
Year: 2018
Subjects: Photovoltaic Modules and BoS Components
Sustainability and Recycling

description: 35th European Photovoltaic Solar Energy Conference and Exhibition; 1399-1406
description: We present a cradle-to-gate Life Cycle Assessment (LCA) of perovskite solar cells in single junction and in tandem with crystalline silicon to investigate their environmental impacts. We compared both configurations to other conventional technologies such as s-Si, p-Si, CIS, and CdTe regarding cumulative energy demand, energy payback time per m2 of module, and further impact categories included in the CML-IA impact assessment method referred to kWh of produced energy. The results show that the modules containing perovskite absorber in single configuration have the lowest cumulative and energy payback time among the assessed technologies. However, the modules containing tandems with crystalline silicon have the highest cumulative energy demand but lower energy payback time compared to c-Si and mc-Si. Both perovskite technologies exhibit higher global warming potential per kWh of produced energy compared to other technologies due to their short lifetime. Furthermore, additional comparisons concerning CML-IA impact categories show that the improvement via efficiency and lifetime is most critical, e.g. for marine aquatic ecotoxicity. Although the use of perovskite absorbers is favourable from the cumulative energy demand, improvements in efficiency and lifetime are still necessary to get comparable environmental effects in other impact categories in relation to conventional photovoltaic technologies.
The Picard group of the universal moduli stack of principal bundles on pointed smooth curves
Creators: name: Fringuelli, Roberto
name: Viviani, Filippo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: Mathematical Physics (math-ph)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: For any smooth connected linear algebraic group G over an algebraically closed field k, we describe the Picard group of the universal moduli stack of principal G-bundles over pointed smooth k-projective curves.
description: 63 pages, acknowledgments updated, final version, to appear on Journal of Topology
Statistical Simulator for the Engine Knock
Creators: name: Shen, Xun
name: Ouyang, Tinghui
name: Zhuang, Jiancang
name: Khajorntraidet, Chanyut
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: This paper proposes a statistical simulator for the engine knock based on the Mixture Density Network (MDN) and the accept-reject method. The proposed simulator can generate the random knock intensity signal corresponding to the input signal. The generated knock intensity has a consistent probability distribution with the real engine. Firstly, the statistical analysis is conducted with the experimental data. From the analysis results, some important assumptions on the statistical properties of the knock intensity are made. Regarding the knock intensity as a random variable on the discrete-time index, it is independent and identically distributed if the input of the engine is identical. The probability distribution of the knock intensity under identical input can be approximated by the Gaussian Mixture Model(GMM). The parameter of the GMM is a function of the input. Based on these assumptions, two sub-problems for establishing the statistical simulator are formulated: One is to approximate the function from input to the parameters of the knock intensity distribution with an absolutely continuous function; The other one is to design a random number generator that outputs the random data consistent with the given distribution. The MDN is applied to approximate the probability density of the knock intensity and the accept-reject algorithm is used for the random number generator design. The proposed method is evaluated in experimental data-based validation.
InfiniWolf: Energy Efficient Smart Bracelet for Edge Computing with Dual Source Energy Harvesting
Creators: name: Magno, Michele
name: Wang, Xiaying
name: Eggimann, Manuel
name: Cavigelli, Lukas
name: Benini, Luca
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This work presents InfiniWolf, a novel multi-sensor smartwatch that can achieve self-sustainability exploiting thermal and solar energy harvesting, performing computationally high demanding tasks. The smartwatch embeds both a System-on-Chip (SoC) with an ARM Cortex-M processor and Bluetooth Low Energy (BLE) and Mr. Wolf, an open-hardware RISC-V based parallel ultra-low-power processor that boosts the processing capabilities on board by more than one order of magnitude, while also increasing energy efficiency. We demonstrate its functionality based on a sample application scenario performing stress detection with multi-layer artificial neural networks on a wearable multi-sensor bracelet. Experimental results show the benefits in terms of energy efficiency and latency of Mr. Wolf over an ARM Cortex-M4F micro-controllers and the possibility, under specific assumptions, to be self-sustainable using thermal and solar energy harvesting while performing up to 24 stress classifications per minute in indoor conditions.
ArbiLoMod, a Simulation Technique Designed for Arbitrary Local Modifications
Creators: name: Buhr, Andreas
name: Engwer, Christian
name: Ohlberger, Mario
name: Rave, Stephan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65N30

description: Engineers manually optimizing a structure using Finite Element based simulation software often employ an iterative approach where in each iteration they change the structure slightly and resimulate. Standard Finite Element based simulation software is usually not well suited for this workflow, as it restarts in each iteration, even for tiny changes. In settings with complex local microstructure, where a fine mesh is required to capture the geometric detail, localized model reduction can improve this workflow. To this end, we introduce ArbiLoMod, a method which allows fast recomputation after arbitrary local modifications. It employs a domain decomposition and a localized form of the Reduced Basis Method for model order reduction. It assumes that the reduced basis on many of the unchanged domains can be reused after a localized change. The reduced model is adapted when necessary, steered by a localized error indicator. The global error introduced by the model order reduction is controlled by a robust and efficient localized a posteriori error estimator, certifying the quality of the result. We demonstrate ArbiLoMod for a coercive, parameterized example with changing structure.
description: 32 pages, 14 figures
DaySy Contactless Measurements of PID Shunt Resistance in Installed PV Modules
Creators: name: Stoicescu, L.
name: Reuter, M.
Publisher: name: WIP
Year: 2018
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 35th European Photovoltaic Solar Energy Conference and Exhibition; 1337-1339
description: This paper describes a new method to measure the shunt resistance Rp of each solar cell in installed PV modules. The shunt resistance Rp determines the power output of the PV module especially at low irradiance  and is therefore crucial for calculating a reliable power forecast as well as for evaluating the effects of degradation and ageing particularly if the module is affected by Potential Induced Degradation (PID). Our method uses two daylight photoluminescence (dPL) images captured with the DaySy Tool under daylight conditions at two different solar irradiances levels 1 and 2. The method is applied to a healthy and a PID affected module: The healthy module shows a mean Rp = 5710 Ω/cm2 with negligible power loss at low irradiances. However the PID module shows a heavily reduced mean Rp = 588 Ω/cm2 leading to a power loss of -42 % at  = 100 W/m2 compared to the healthy module. Hence our method reflects the expected behavior of PID affected modules.
Scaling up Laser Line Photoluminescence Imaging for Outdoor Inspections
Creators: name: Dos Reis Benatto, G.A.
name: Chi, M.
name: Santamaria Lancia, A.A.
name: Riedel, N.
name: Jensen, O.B.
name: Thorseth, A.
name: Dam-Hansen, C.
name: Thorsteinsson, S.
name: Poulsen, P.B.
Publisher: name: WIP
Year: 2018
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 35th European Photovoltaic Solar Energy Conference and Exhibition; 1352-1354
description: As outdoor electroluminescence is implemented in the field, with several developments for automated inspection, an increasing concern rises upon the limitation that the electrical connections will bring to the inspection speed. In the effort to avoid both electrical contact and time limitations for PV inspections, here we present the progress in scaling up the well-known cell level photoluminescence imaging to a module level. The final goal is to build up a system that can perform PL excitation and image acquisition from the distance on PV modules and brought easily to the field by unmanned aerial vehicles (UAV).
Cinnyris solaris subsp. exquisita Hartert
Creators: name: Pachycephalidae
name: Aegithalidae
name: Remizidae
name: Paridae
name: Sittidae
name: Neosittidae
name: Certhiidae
name: Rhabdornithidae
name: Climacteridae
name: Dicaeidae
name: Pardalotidae
name: Nectariniidae, And
name: Lecroy, Mary
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Passeriformes
Nectariniidae
Cinnyris

description: Cinnyris solaris exquisita Hartert Cinnyris solaris exquisita Hartert, 1904a: 214 (Wetter). Now Cinnyris solaris exquisitus Hartert, 1904. See White and Bruce, 1986: 406, and Cheke and Mann, 2008a: 301. HOLOTYPE: AMNH 687607, adult male, collected on Wetar (5 Wetter) Island, 07.48S, 126.18E (White and Bruce, 1986: 491), Lesser Sundas, Indonesia, on 30 September 1902, by Heinrich Kühn (no. 5609). From the Rothschild Collection. COMMENTS: Hartert cited Kühn’s unique field number of the holotype in the original description and noted that 12 males, two immature males, and four females had been collected, 11 with field numbers and seven without. Ten specimens came to AMNH, all of which had field numbers; the nine paratypes in AMNH, all collected by Kühn on Wetar in 1902, are: males, AMNH 687602 (Kühn no. 5494), 19 September, AMNH 687603 (5611), 30 September, AMNH 687604 (5608), 2 October, AMNH 687605 (5493), 26 September, AMNH 687606 (5492), 14 September; females, AMNH 687608 (5729), 8 October, AMNH 687609 (5572), 1 October, AMNH 687610 (5571), 4 October, AMNH 687611 (5495), 26 September.
description: Published as part of Pachycephalidae, Aegithalidae, Remizidae, Paridae, Sittidae, Neosittidae, Certhiidae, Rhabdornithidae, Climacteridae, Dicaeidae, Pardalotidae, Nectariniidae, And & Lecroy, Mary, 2010, Type Specimens Of Birds In The American Museum Of Natural History Part 8. Passeriformes:, pp. 1-178 in Bulletin of the American Museum of Natural History 2010 (333) on page 143
description: {"references": ["Hartert, E. 1904 a. The birds of the South-west Islands, Wetter, Roma, Kisser, Letti and Moa. Novitates Zoologicae 11: 174 - 221.", "White, C. M. N., and M. D. Bruce. 1986. The birds of Wallacea. BOU Check-list no. 7. London: British Ornithologists' Union, 524 pp.", "Cheke, R. A., and C. F. Mann. 2008 a. Family Nectariniidae (sunbirds). In J. del Hoyo, A. Elliott, and D. Christie (editors), Handbook of birds of the world, volume 13: 196 - 320. Barcelona: Lynx Edicions, 880 pp., 60 pls., 536 photographs."]}
ELATE: An open-source online application for analysis and visualization of elastic tensors
Creators: name: Gaillac, Romain
name: Pullumbi, Pluton
name: Coudert, François-Xavier
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We report on the implementation of a tool for the analysis of second-order elastic stiffness tensors, provided with both an open-source Python module and a standalone online application providing visualization tools of anisotropic mechanical properties. After describing the software features, how we compute the conventional elastic constants and how we represent them graphically, we explain our technical choices for the implementation. In particular, we focus on why a Python module is used to generate the HTML web page with embedded Javascript for dynamical plots.
Digitalization in PV – Virtual Application of Real Weather Data on PV Modules for Lifetime Prediction
Creators: name: Zeller, U.
name: Pander, M.
name: Daßler, D.
name: Jäckel, B.
Publisher: name: WIP
Year: 2018
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 35th European Photovoltaic Solar Energy Conference and Exhibition; 1312-1317
description: Lifecycles of products used outdoors are primarily influenced by given operating conditions. These conditions mainly vary depending on the location. Hence one, possibly, can determine one primary driver of all environmental parameters but in general a number of climatic parameters (e.g. temperature, relative humidity, wind, precipitation, UV exposure and others) have to be considered relevant. Working with real meteorological data in lifetime simulation and durability tests leads to large quantities of data. This work introduces an approach to reduce these large quantities to ensure feasible implementation in lifetime simulation by the example of finite element analysis on PV modules.
Multi-Fold Gabor, PCA and ICA Filter Convolution Descriptor for Face Recognition
Creators: name: Low, Cheng Yaw
name: Teoh, Andrew Beng Jin
name: Ng, Cong Jie
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This paper devises a new means of filter diversification, dubbed multi-fold filter convolution (M-FFC), for face recognition. On the assumption that M-FFC receives single-scale Gabor filters of varying orientations as input, these filters are self-cross convolved by M-fold to instantiate a filter offspring set. The M-FFC flexibility also permits cross convolution amongst Gabor filters and other filter banks of profoundly dissimilar traits, e.g., principal component analysis (PCA) filters, and independent component analysis (ICA) filters. The 2-FFC of Gabor, PCA and ICA filters thus yields three offspring sets: (1) Gabor filters solely, (2) Gabor-PCA filters, and (3) Gabor-ICA filters, to render the learning-free and the learning-based 2-FFC descriptors. To facilitate a sensible Gabor filter selection for M-FFC, the 40 multi-scale, multi-orientation Gabor filters are condensed into 8 elementary filters. Aside from that, an average histogram pooling operator is employed to leverage the 2-FFC histogram features, prior to the final whitening PCA compression. The empirical results substantiate that the 2-FFC descriptors prevail over, or on par with, other face descriptors on both identification and verification tasks.
description: 14 pages, 10 figures, 10 tables
An Accurate EEGNet-based Motor-Imagery Brain-Computer Interface for Low-Power Edge Computing
Creators: name: Wang, Xiaying
name: Hersche, Michael
name: Tömekce, Batuhan
name: Kaya, Burak
name: Magno, Michele
name: Benini, Luca
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: Human-Computer Interaction (cs.HC)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: This paper presents an accurate and robust embedded motor-imagery brain-computer interface (MI-BCI). The proposed novel model, based on EEGNet, matches the requirements of memory footprint and computational resources of low-power microcontroller units (MCUs), such as the ARM Cortex-M family. Furthermore, the paper presents a set of methods, including temporal downsampling, channel selection, and narrowing of the classification window, to further scale down the model to relax memory requirements with negligible accuracy degradation. Experimental results on the Physionet EEG Motor Movement/Imagery Dataset show that standard EEGNet achieves 82.43%, 75.07%, and 65.07% classification accuracy on 2-, 3-, and 4-class MI tasks in global validation, outperforming the state-of-the-art (SoA) convolutional neural network (CNN) by 2.05%, 5.25%, and 5.48%. Our novel method further scales down the standard EEGNet at a negligible accuracy loss of 0.31% with 7.6x memory footprint reduction and a small accuracy loss of 2.51% with 15x reduction. The scaled models are deployed on a commercial Cortex-M4F MCU taking 101ms and consuming 4.28mJ per inference for operating the smallest model, and on a Cortex-M7 with 44ms and 18.1mJ per inference for the medium-sized model, enabling a fully autonomous, wearable, and accurate low-power BCI.
Multi-Wire Interconnection: The Impact of the Lamination Process and the Encapsulant Properties on the Solder Joint Formation
Creators: name: Van Dyck, R.
name: Borgers, T.
name: Govaerts, J.
name: Nivelle, P.
name: Van Der Heide, A.
name: De Jonge, S.
name: Voroshazi, E.
name: Szlufcik, J.
name: Van Vuure, A.W.
name: Poortmans, J.
Publisher: name: WIP
Year: 2018
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 35th European Photovoltaic Solar Energy Conference and Exhibition; 1328-1332
description: Multi-wire designs for photovoltaic modules already proved its advantages in the past. In previous
contributions, several multi-wire interconnection approaches were presented, both for back-contact [4] and 2-side
contacted cells [4,5]. This paper reports the progress in the woven multi-wire interconnection which enables a combined
lamination and soldering process using low-temperature melting point solder alloys. This work focuses on the solder
joint formation and aims to correlate the viscoelastic properties of the encapsulant material during lamination with the
electrical and visual characterisation of the solder joint. To do so, three analysis techniques are used:
electroluminescence (EL) imaging, current-voltage (IV) measurements and a cross-section analysis. The aim is to
optimize the lamination process and material selection for optimal solder joint formation. Rheological measurements
on the encapsulation polymers revealed the viscosities at various temperatures. Small modules were fabricated and
tested. According to the results of these tests, the optimal lamination temperature is around 165 ºC and at which the
viscosity of the encapsulant should be at least 7500 Pa∙s. One of the tested encapsulant materials met these requirements
and had the best electrical properties according to the EL-imaging and IV-measurements.
Zonally dominated dynamics and Dimits threshold in curvature-driven ITG turbulence
Creators: name: Ivanov, P. G.
name: Schekochihin, A. A.
name: Dorland, W.
name: Field, A. R.
name: Parra, F. I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The saturated state of turbulence driven by the ion-temperature-gradient instability is investigated using a two-dimensional long-wavelength fluid model that describes the perturbed electrostatic potential and perturbed ion temperature in a magnetic field with constant curvature (a $Z$-pinch) and an equilibrium temperature gradient. Numerical simulations reveal a well-defined transition between a finite-amplitude saturated state dominated by strong zonal-flow and zonal-temperature perturbations, and a blow-up state that fails to saturate on a box-independent scale. We argue that this transition is equivalent to the Dimits transition from a low-transport to a high-transport state seen in gyrokinetic numerical simulations. A quasi-static staircase-like structure of the temperature gradient intertwined with zonal flows, which have patch-wise constant shear, emerges near the Dimits threshold. The turbulent heat flux in the low-collisionality near-marginal state is dominated by turbulent bursts, triggered by coherent long-lived structures closely resembling those found in gyrokinetic simulations with imposed equilibrium flow shear. The break up of the low-transport Dimits regime is linked to a competition between the two different sources of poloidal momentum in the system -- the Reynolds stress and the advection of the diamagnetic flow by the $\boldsymbol{E}\times\boldsymbol{B}$ flow. By analysing the linear ITG modes, we obtain a semi-analytic model for the Dimits threshold at large collisionality.
description: 63 pages, 30 figures, to be submitted to J. Plasma Phys
Spatially Assisted Schwinger Mechanism and Magnetic Catalysis
Creators: name: Copinger, Patrick
name: Fukushima, Kenji
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using the worldline formalism we compute an effective action for fermions under a temporally modulated electric field and a spatially modulated magnetic field. It is known that the former leads to an enhanced Schwinger Mechanism, while we find that the latter can also result in enhanced particle production and even cause a reorganization of the vacuum to acquire a larger dynamical mass in equilibrium which spatially assists the Magnetic Catalysis.
description: This is an erratum applied version to PRL117, 081603 (2016). We found a sign mistake and wrote an erratum with a conclusion that the central results are not changed once spatially decreasing magnetic fields are replaced with increasing ones. The Gaussian approximation leading to a wrong answer has also been improved to a systematic perturbative evaluation
Aethopyga flagrans subsp. decolor Parkes 1963
Creators: name: Pachycephalidae
name: Aegithalidae
name: Remizidae
name: Paridae
name: Sittidae
name: Neosittidae
name: Certhiidae
name: Rhabdornithidae
name: Climacteridae
name: Dicaeidae
name: Pardalotidae
name: Nectariniidae, And
name: Lecroy, Mary
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Passeriformes
Nectariniidae
Aethopyga

description: Aethopyga flagrans decolor Parkes Aethopyga flagrans decolor Parkes, 1963: 8 (Cape Engaño, northeasternmost Luzon, Philippines). Now Aethopyga flagrans decolor Parkes, 1963. See Dickinson et al., 1991: 383, and Cheke and Mann, 2008a: 305–306. HOLOTYPE: AMNH 688081, collected at Cape Engaño, 18.35N, 122.08E (Dickinson et al. 1991: 419), Cagayan Province, northern Luzon Island, Philippines, on 19 April 1895, by John Whitehead (no. A.245). From the Rothschild Collection. COMMENTS: Parkes cited the AMNH number of the holotype in the original description and noted that he examined five specimens from Cagayan Province and three from Ilocos Norte Province. Of the seven paratypes, three are in AMNH: AMNH 688082, 688083, females from Cape Engaño, and AMNH 768042, female, from San Mariano.
description: Published as part of Pachycephalidae, Aegithalidae, Remizidae, Paridae, Sittidae, Neosittidae, Certhiidae, Rhabdornithidae, Climacteridae, Dicaeidae, Pardalotidae, Nectariniidae, And & Lecroy, Mary, 2010, Type Specimens Of Birds In The American Museum Of Natural History Part 8. Passeriformes:, pp. 1-178 in Bulletin of the American Museum of Natural History 2010 (333) on page 148
description: {"references": ["Parkes, K. C. 1963. The races of the Flaming Sunbird (Aethopyga flagrans). Bulletin of the British Ornithologists' Club 83: 7 - 8.", "Dickinson, E. C., R. S. Kennedy, and K. C. Parkes. 1991. The birds of the Philippines. B. O. U. Check-list no. 12. Tring, UK: British Ornithologists' Union, 507 pp.", "Cheke, R. A., and C. F. Mann. 2008 a. Family Nectariniidae (sunbirds). In J. del Hoyo, A. Elliott, and D. Christie (editors), Handbook of birds of the world, volume 13: 196 - 320. Barcelona: Lynx Edicions, 880 pp., 60 pls., 536 photographs."]}
Scanning Acoustic Microscopy as a Non-Destructive Method for the Investigation of PV Module Components
Creators: name: Verissimo Mesquita, L.
name: Mansour, D.E.
name: Philipp, D.
name: Pitta Bauermann, L.
Publisher: name: WIP
Year: 2018
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 35th European Photovoltaic Solar Energy Conference and Exhibition; 1318-1322
description: The application of new non-destructive testing for the inspection of photovoltaic modules is needed to
advance the assessment of module quality and, thereby, improve their long-term performance. Scanning Acoustic
Microscopy (SAM) has proved to be a powerful technique for the investigation of failures and defects in a great range
of materials, including solar cells and modules. In this work, defects in PV modules are analyzed by SAM and the
images are compared with well-established non-destructive methods, such as Dark Lock-In Thermography (DLIT)
and Electroluminescence (EL). Acoustic micrographs were collected from different layers of the module and allowed
the visualization and assessment of depth profiles of the embedded PV module components individually. SAM can
detect irregularities on the encapsulant, backsheet and the solar cell at high lateral resolution and help elucidate
defects detected with the other techniques. Moreover, the acoustic beam can be focused at the encapsulant/cell
interface to visualize eventual failures occurring on these two layers separately. Therefore, SAM delivers
complementary information to EL and DLIT on the quality of PV modules.
Generic Error Bounds for the Generalized Lasso with Sub-Exponential Data
Creators: name: Genzel, Martin
name: Kipp, Christian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistics Theory (math.ST)
subject: Machine Learning (stat.ML)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 60D05, 62F30, 62F35, 90C25

description: This work performs a non-asymptotic analysis of the generalized Lasso under the assumption of sub-exponential data. Our main results continue recent research on the benchmark case of (sub-)Gaussian sample distributions and thereby explore what conclusions are still valid when going beyond. While many statistical features remain unaffected (e.g., consistency and error decay rates), the key difference becomes manifested in how the complexity of the hypothesis set is measured. It turns out that the estimation error can be controlled by means of two complexity parameters that arise naturally from a generic-chaining-based proof strategy. The output model can be non-realizable, while the only requirement for the input vector is a generic concentration inequality of Bernstein-type, which can be implemented for a variety of sub-exponential distributions. This abstract approach allows us to reproduce, unify, and extend previously known guarantees for the generalized Lasso. In particular, we present applications to semi-parametric output models and phase retrieval via the lifted Lasso. Moreover, our findings are discussed in the context of sparse recovery and high-dimensional estimation problems.
description: The current version of the manuscript has been accepted to the Journal "Sampling Theory, Signal Processing, and Data Analysis"
PV Module Glass Stress Testing
Creators: name: Mathiak, G.
name: Falk, L.
name: Felden, S.
name: Rimmelspacher, L.
name: Herrmann, W.
name: Reil, F.
Publisher: name: WIP
Year: 2018
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 35th European Photovoltaic Solar Energy Conference and Exhibition; 1280-1283
description: Glass breakage is one of the main failure modes found in the field. Mechanical stress caused by hail impact, wind or snow load or localized heating due to hot spots or light arcing are leading to forces which can break the front glass. Understanding the cause for glass breakage is important for future failure avoidance.
Elastic deformations or strains lead to the birefringence of glass so that stress can be made visible. A further developed instrument uses the scattered light method to determine through-the-thickness stress distribution in flat glass products. The instrument was used to measure glass stress in tempered and non-tempered solar glass and to perform rootcause analysis to glass breakage in the field. If the surface stress of one side turns to a higher tensile stress (+50 MPa) glass breakage can occur.
Multivariable (ϕ,Γ)-modules and products of Galois groups
Creators: name: Zábrádi, Gergely
Publisher: name: arXiv
Year: 2016
Subjects: subject: Number Theory (math.NT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We show that the category of continuous representations of the $d$th direct power of the absolute Galois group of $\mathbb{Q}_p$ on finite dimensional $\mathbb{F}_p$-vector spaces (resp. finitely generated $\mathbb{Z}_p$-modules, resp. finite dimensional $\mathbb{Q}_p$-vector spaces) is equivalent to the category of étale $(φ,Γ)$-modules over a $d$-variable Laurent-series ring over $\mathbb{F}_p$ (resp. over $\mathbb{Z}_p$, resp. over $\mathbb{Q}_p$).
description: 26 pages, final version, to appear in Math. Research Letters
Q-EEGNet: an Energy-Efficient 8-bit Quantized Parallel EEGNet Implementation for Edge Motor-Imagery Brain--Machine Interfaces
Creators: name: Schneider, Tibor
name: Wang, Xiaying
name: Hersche, Michael
name: Cavigelli, Lukas
name: Benini, Luca
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Motor-Imagery Brain--Machine Interfaces (MI-BMIs)promise direct and accessible communication between human brains and machines by analyzing brain activities recorded with Electroencephalography (EEG). Latency, reliability, and privacy constraints make it unsuitable to offload the computation to the cloud. Practical use cases demand a wearable, battery-operated device with low average power consumption for long-term use. Recently, sophisticated algorithms, in particular deep learning models, have emerged for classifying EEG signals. While reaching outstanding accuracy, these models often exceed the limitations of edge devices due to their memory and computational requirements. In this paper, we demonstrate algorithmic and implementation optimizations for EEGNET, a compact Convolutional Neural Network (CNN) suitable for many BMI paradigms. We quantize weights and activations to 8-bit fixed-point with a negligible accuracy loss of 0.4% on 4-class MI, and present an energy-efficient hardware-aware implementation on the Mr.Wolf parallel ultra-low power (PULP) System-on-Chip (SoC) by utilizing its custom RISC-V ISA extensions and 8-core compute cluster. With our proposed optimization steps, we can obtain an overall speedup of 64x and a reduction of up to 85% in memory footprint with respect to a single-core layer-wise baseline implementation. Our implementation takes only 5.82 ms and consumes 0.627 mJ per inference. With 21.0GMAC/s/W, it is 256x more energy-efficient than an EEGNET implementation on an ARM Cortex-M7 (0.082GMAC/s/W).
Aethopyga flagrans subsp. daphoenonota Parkes 1963
Creators: name: Pachycephalidae
name: Aegithalidae
name: Remizidae
name: Paridae
name: Sittidae
name: Neosittidae
name: Certhiidae
name: Rhabdornithidae
name: Climacteridae
name: Dicaeidae
name: Pardalotidae
name: Nectariniidae, And
name: Lecroy, Mary
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Passeriformes
Nectariniidae
Aethopyga

description: Aethopyga flagrans daphoenonota Parkes Aethopyga flagrans daphoenonota Parkes, 1963: 8 (Luzuriaga (4,500 9 elevation), Cuernos de Negros, Negros Oriental Province, Negros Island, Philippines). Now Aethopyga flagrans daphoenonota Parkes, 1963. See Dickinson et al., 1991: 383, and Cheke and Mann, 2008a: 305–306. HOLOTYPE: AMNH 488886, adult male, collected at Luzuriaga, 4500 ft, 09.16N, 123.15E (Dickinson et al., 1991: 421), Cuernos de Negros, Negros Oriental Province, Negros Island, Philippines, on 22 December 1952, by D.S. Rabor (no. 4038). COMMENTS: Parkes cited the AMNH number of the holotype in the original description and noted that he examined 10 specimens of daphoenonota from Negros. Of the nine paratypes, eight are in AMNH: AMNH 459921, male, Danawan, Canlaon; AMNH 459922, male, AMNH 459923, 459924, females, Pula, Canlaon; AMNH 461101, male, AMNH 461102, 461103, females, and AMNH 488887, male, from Luzuriaga, Negros Oriental. Due to a typographical error, daphoenonota was misspelled daphoenota in Cheke et al., 2001: 335).
description: Published as part of Pachycephalidae, Aegithalidae, Remizidae, Paridae, Sittidae, Neosittidae, Certhiidae, Rhabdornithidae, Climacteridae, Dicaeidae, Pardalotidae, Nectariniidae, And & Lecroy, Mary, 2010, Type Specimens Of Birds In The American Museum Of Natural History Part 8. Passeriformes:, pp. 1-178 in Bulletin of the American Museum of Natural History 2010 (333) on pages 148-149
description: {"references": ["Parkes, K. C. 1963. The races of the Flaming Sunbird (Aethopyga flagrans). Bulletin of the British Ornithologists' Club 83: 7 - 8.", "Dickinson, E. C., R. S. Kennedy, and K. C. Parkes. 1991. The birds of the Philippines. B. O. U. Check-list no. 12. Tring, UK: British Ornithologists' Union, 507 pp.", "Cheke, R. A., and C. F. Mann. 2008 a. Family Nectariniidae (sunbirds). In J. del Hoyo, A. Elliott, and D. Christie (editors), Handbook of birds of the world, volume 13: 196 - 320. Barcelona: Lynx Edicions, 880 pp., 60 pls., 536 photographs.", "Cheke, R. A., C. F. Mann, and illustrated by R. Allen. 2001. Sunbirds. A guide to the sunbirds, flowerpeckers, spiderhunters and sugarbirds of the world. New Haven, CT: Yale University Press, 384 pp, 48 pls."]}
BIPV Modules with Plated Bifacial n-PERT Cells and Smart Wire Interconnection: Manufacturing, Monitoring and Energy Yield Analysis
Creators: name: Van Der Heide, A.S.H.
name: Goverde, H.
name: Spiliotis, K.
name: Lehmann, J.
name: Tous, L.
name: Russell, R.
name: Saelens, D.
name: Driesen, J.
name: Voroshazi, E.
name: Poortmans, J.
Publisher: name: WIP
Year: 2018
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 35th European Photovoltaic Solar Energy Conference and Exhibition; 1201-1204
description: This contribution handles about BIPV modules made with plated bifacial n-PERT cells from imec. For the cell interconnection the advanced smart wire connection technology (SWCT) was used that can reduce silver consumption at cell level considerably. These modules were made for installation in a facade installation of the KU Leuven, with monitoring of module performance, weather conditions and module temperatures. The modules are all glass-glass, both transparent and white. The modules were inspected with EL, and I-V measurements at standard test conditions were performed (also from the back side for the transparent modules). The modules were installed in September 2017, monitoring started one month later. The most important finding was that the bifacial gain when using a white surface behind the module was only considerable when the modules were ventilated. The probable reason is that without ventilation, the extra heat generated by double-sided illumination results in a module temperature that is so high, that the decrease in Voc and FF almost completely compensates for the gain in Isc. The monitoring data still have to be analysed in more detail, including a comparison with energy yield calculations with the imec energy yield software that has been adapted for bifacial modules.
Information travels in massless fields in 1+1 dimensions where energy cannot
Creators: name: Jonsson, Robert H.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It has been demonstrated that, in (1+1) spacetime dimensions, massless fields can be used for information transmission even between parties that are time-like rather than light-like separated - and even without the receiver obtaining any energy from the sender. Here, it is shown that this phenomenon is not limited to a particular model of signaling device, but is based on general properties of the quantum field: energy propagates strictly only on the lightcone, whereas perturbations to the field amplitude, which can carry information, permeate also the inside of the future lightcone of the sender. It is also shown that this timelike and energyless signaling in massless fields occurs in Dirichlet cavities, which shows that the phenomenon is not confined to setups with a zero mode. Moreover, it is shown that the phenomenon extends beyond perturbation theory, namely by deriving the phenomenon non-perturbatively for the case where the sender and receiver systems are modelled as harmonic oscillators. To illustrate the propagation of energy in massless fields, the energy density is calculated that results from temporarily coupling an Unruh-DeWitt detector at rest to the vacuum of the field.
description: v2: extended Section VI (and added Appendices) on harmonic oscillators inside cavity v3: published version
Energy Yield Comparison between Bifacial and Monofacial PV Modules: Real World Measurements and Validation with Bifacial Simulations
Creators: name: Bonilla Castro, J.
name: Herz, M.
name: Monokroussos, C.
name: Schweiger, M.
Publisher: name: WIP
Year: 2018
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 35th European Photovoltaic Solar Energy Conference and Exhibition; 1236-1241
description: The photovoltaic (PV) market has seen the entry of different PV module technologies during the past years. The success of these PV technologies as key market players is linked to their long-term reliability and energy yield (EY) performance. Bifacial PV modules are rapidly increasing their market share, leading to changes in the existing PV standards and modifications in the current measurement practices. With this, debates about conventional EY simulations and their deviations from real-world performance have arisen. To cope with these questions, we investigated the EY performance under real-operating conditions of four commercial bifacial PV samples,12 monofacial c-Si and two CdTe thin-film PV modules during one year at TÜV Rheinland test site in Cologne, Germany. The PV samples were characterized in the laboratory before and after the outdoor exposure to determine final degradation rates. Together with these measurements, the collected climate data were used for EY simulations with PVsyst. The uncertainties of the results were quantified focusing on performance and rear side irradiation.
Topological Superconductivity in Skyrmion Lattices
Creators: name: Mascot, Eric
name: Bedow, Jasmin
name: Graham, Martin
name: Rachel, Stephan
name: Morr, Dirk K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Atomic manipulation and interface engineering techniques have provided a novel approach to custom-designing topological superconductors and the ensuing Majorana zero modes, representing a new paradigm for the realization of topological quantum computing and topology-based devices. Magnet-superconductor hybrid (MSH) systems have proven to be experimentally suitable to engineer topological superconductivity through the control of both the complex structure of its magnetic layer and the interface properties of the superconducting surface. Here, we demonstrate that two-dimensional MSH systems containing a magnetic skyrmion lattice provide an unprecedented ability to control the emergence of topological phases. By changing the skyrmion radius, which can be achieved experimentally through an external magnetic field, one can tune between different topological superconducting phases, allowing one to explore their unique properties and the transitions between them. In these MSH systems, Josephson scanning tunneling spectroscopy spatially visualizes one of the most crucial aspects underlying the emergence of topological superconductivity, the spatial structure of the induced spin-triplet correlations.