cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Topological spin Meissner effect in exciton-polariton spinor condensate: constant amplitude solutions, half-vortices and symmetry breaking
Creators: name: Gulevich, D. R.
name: Skryabin, D. V.
name: Alodjants, A. P.
name: Shelykh, I. A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We generalize the spin Meissner effect for exciton-polariton condensate confined in annular geometries to the case of non-trivial topology of the condensate wavefunction. In contrast to the conventional spin Meissner state, topological spin Meissner states can in principle be observed at arbitrary high magnetic field not limited by the critical magnetic field value for the condensate in a simply-connected geometry. One special example of the topological Meissner states are half-vortices. We show that in the absence of magnetic field half-vortices in a ring exist in a form of superposition of elementary half-vortex states which resolves recent experimental results where such puzzling superposition was observed. Furthermore, we show that if a pure half-vortex state is to be observed, a non-zero magnetic field of a specific magnitude needs to be applied. Studying exciton-polariton in a ring in presence of TE-TM splitting, we observe spin Meissner states which break rotational symmetry of the system by developing inhomogeneous density distributions. We classify various states arising in presence of non-zero TE-TM splitting based on what states they can be continued from by increasing the TE-TM splitting parameter from zero. With further increasing TE-TM splitting, states with broken symmetry may transform into stable half-dark solitons and therefore may serve as a useful tool to generate various non-trivial states of a spinor condensate.
Accurate Determination of Micro-Inverter Performance Using Electrically Biased PV Modules
Creators: name: Moschner, J.D.
name: Tant, J.
name: Wabbes, A.
name: Scheerlinck, S.
name: Driesen, J.
Publisher: name: WIP
Year: 2020
Subjects: Photovoltaic Modules and BoS Components
Inverters and Balance of System Components

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 1175-1178
description: We measured the efficiency of micro-inverters, and found that the simulation of current-voltage curves with digitally controlled power supplies does not work well with some devices, due to the fast perturbation of input impedance that they create. As a workaround, we used PV modules, which were supplied with DC current. The modules have to be selected and parameterized specifically for each desired operating range. Some deviations from the desired operating point are occurring. However, we were able to demonstrate that the same high accuracy can be achieved as with the simulation. The micro-inverters exhibit some peculiar behavior not usually seen in string inverters, in particular deviations from maximum power point (MPP) operation. This requires particular attention in the data analysis in order to assess the MPP tracking efficiency accurately.
Probing spacetime around Sagittarius A* using modeled VLBI closure phases
Creators: name: Fraga-Encinas, R.
name: Moscibrodzka, M.
name: Brinkerink, C.
name: Falcke, H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The emission region and black hole shadow of Sagittarius A*, the supermassive black hole at the Galactic Center, can be probed with millimeter Very Long Baseline Interferometry. Our goal is to probe the geometry of the emitting plasma around Sgr A* by using modeled mm-VLBI closure phase calculations at 1.3 mm and to constrain the observer's inclination angle and position angle of the black hole spin axis. We have simulated images for three different models of the emission of Sgr A*: an orbiting spot, a disk model, and a jet model. The orbiting spot model was used as a test case scenario, while the disk and jet models are physically driven scenarios based on standard three-dimensional general relativistic magnetohydrodynamic simulations of hot accretion flows. Our results are compared to currently available closure phase observational limits. Our results indicate that more models with closer to edge-on viewing angles are consistent with observational limits. In general, jet and disk geometries can reproduce similar closure phases for different sets of viewing and position angles. Consequently, the favored black hole spin orientation and its magnitude are strongly model dependent. We find that both the jet and the disk models can explain current VLBI limits. We conclude that new observations at 1.3 mm and possibly at longer wavelengths including other triangles of VLBI baselines are necessary to interpret Sgr A* emission and the putative black hole spin parameters.
description: 13 pages, 7 figures
Performance Analysis of Polycrystalline Module Based on Faults Causes
Creators: name: Feng, L.
name: Hamelmann, F.U.
name: Zhang, J.
name: Ding, K.
name: Hempelmann, S.
name: Diehl, M.
name: Pfeil, T.
name: Brandt, S.
name: Friedrich, W.
name: Amin, N.
Publisher: name: WIP
Year: 2020
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 1159-1162
description: As people pay more and more attention to greenhouse gases and limited resources, solar energy is widely used as a clean energy source. The performance ratio of PV systems is easily influenced by the various environmental andtechnical factors, theresearch on theperformance analysis ofPVmodule isina need. This work isaimed at studying the performance parameters under STC, EL images and dark I-V curves to explore the output characteristic of polycrystallinemodules based on the faults in thecase of electrical overload and mechanical stress. The resultsshow that three defective bypass didoes mainly affected the open circuit voltage, voltage at MPP, power at MPP, current at MPP except theshort circuit current. Meanwhile, there isnoEL signal inthefaulty modulewith threedefective bypass diodes. When the cracks appear at the beginning, it causes small effect on the performance degradation of PV module. The inflection point from dark I-V curves under electrical overload drops significantly than mechanical stress, which causes more power losses.
Hebrew language and grammar
Creators: name: :Unav
Publisher: name: University of Victoria Libraries
Year: 2020
Subjects: subject: Hebrew language
valueUri: http://id.worldcat.org/fast/954191
subject: Hebrew language--Grammar
valueUri: http://id.worldcat.org/fast/954231

description: Unidentified text on Hebrew language and grammar, written ca. 1600-1700 (?) in Latin, with use of Hebrew and Greek. Pages written front and back, apparently in several different hands. The text is a Hebrew grammar made by a Christian. Hebrew texts examined and discussed are biblical. Generally appears to be either a draft of a text never printed, personal notes taken from multiple sources, or perhaps lecture notes. Main text is Latin with significant use of Hebrew and minor use of Greek. -- Bookseller's description
Burst-dependent plasticity and dendritic amplification support target-based learning and hierarchical imitation learning
Creators: name: Lupo, Cosimo
name: Capone, Cristiano
name: Muratore, Paolo
name: Paolucci, Pier Stanislao
Publisher: name: Zenodo
Year: 2022

description: Most biological models are composed of single-compartment neurons. Despite recent findings on dendritic computational properties, these features have been only rarely exploited. We introduce a multi-compartment model for pyramidal neurons, in which bursts and dendritic input segregation allow for biologically plausible target-based learning. The solution of a problem is represented as a spatio-temporal pattern of bursts, suggested to apical tufts of neurons. A store-and-recall and a nontrivial navigation tasks are learned, the latter by introducing a hierarchical architecture of layers enabling the decomposition into simpler subtasks (hierarchical imitation learning).
CFD Study of Hybrid Solar Panels with PCM
Creators: name: Gonzalez-Peña, D.
name: García-Rodríguez, A.
name: Granados-López, D.
name: Dieste-Velasco, M.I.
name: Alonso-Tristán, C.
Publisher: name: WIP
Year: 2020
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 1163-1167
description: A comparison of 14 different PV and PV/T panel designs, where the implementation of PCM and different types of thermal insulators is analysed. All the studies have been performed by CFD simulations in both steady state and transient in both 2D and 3D. All the results obtained are evaluated with respect to a conventional PV panel. In the study, the capacity of thermal generation as well as electricity are analysed separately in each design. The PV performance is calculated based on the panel surface temperature, while thermal energy generation is evaluated analysing the heat flux into the PCM, PCM liquid fraction, the temperature profile in the panel and fluid inlet outlet temperatures. Some designs show temperatures than can produce that the panel get broke. Therefore, especial care must be taken with the thermal insulator installed in the panel. In those panels that have PCM have a temperature stratification in the PCM that can reduce the photovoltaic efficiency. This limitation can be fix by the encapsulation of the PCM, to prevent from convection flows along the panel.
Dark-field imaging as a non-invasive method for characterization of whispering gallery modes in microdisk cavities
Creators: name: Baranov, D. A.
name: Samusev, K. B.
name: Shishkin, I. I.
name: Samusev, A. K.
name: Belov, P. A.
name: Bogdanov, A. A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Whispering gallery mode microdisk cavities fabricated by direct laser writing are studied using dark-field imaging and spectroscopy in the visible spectral range. {Dark-field imaging allows us to directly visualize the spatial intensity distribution of whispering gallery modes. We extract their azimuthal and radial mode indices from dark-field images, and find the axial mode number from the dispersion relation. The scattering spectrum obtained in the confocal arrangement provides information on the density of optical states in the resonator. The proposed technique is a simple non-invasive way to characterize the optical properties of microdisk cavities.
description: 5 pages, 4 figures
Determination of a PV Module Power Matrix with an LED Solar Simulator
Creators: name: Riechelmann, S.
name: Sträter, H.
name: Winter, S.
Publisher: name: WIP
Year: 2020
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 1168-1170
description: Energy Rating is a technique that enables a more realistic comparison of PV module performance. In this work, we utilize an LED solar simulator to measure two crucial input parameters for Energy Rating: the power matrix and the spectral responsivity of a poly-Si PV module. The power matrix is measured in a higher resolution compared to the minimum requirements given by the Energy Rating standard IEC 61853 and the obtained dataset is used to determine inter- and extrapolation issues that may arise from the low resolution demanded by the standard. It is shown that for the examined poly-Si module the low resolution is sufficient and yield differences of less than 0.15 % occur.
English Pre-Reformation Genealogical Roll
Creators: name: :Unav
Publisher: name: University of Victoria Libraries
Year: 2020
Subjects: subject: Manuscripts, Medieval
valueUri: http://id.worldcat.org/fast/1008422
subject: Genealogy
valueUri: http://id.worldcat.org/fast/939652

description: A genealogical account of English Kings and Events from Ethelbert to Henry VI (England (Canterbury), ca. 1472-c. 1520?). The scroll is divided into seven columns. 1. The year (A.D.) 2. The 'Popes. 3. The kings of England. 4. The archbishops of Canterbury as well as events in English history. 5. The English Christian year. 6. The Dominical Letter. 7. The Golden Number. The first date is 597 and the last 1472, but the record ceases with the year 1435. The last entry in the English column is the death of John, Duke of Bedford. Rather surprisingly for an English Roll the names of the popes were not scored through at the time of the Reformation. The names on the genealogical tree have faded badly so that the majority are unreadable. Records include: 911 Foundation of the monastery of Cluny in Burgundy; 1346 Crecy; 1349 The Great Plague; 1316 Parliament at Nottingham. -- Maggs catalogue 960
Radio disappearance of the magnetar XTE J1810-197 and continued X-ray timing
Creators: name: Camilo, F.
name: Ransom, S. M.
name: Halpern, J. P.
name: Alford, J. A. J.
name: Cognard, I.
name: Reynolds, J. E.
name: Johnston, S.
name: Sarkissian, J.
name: van Straten, W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report on timing, flux density, and polarimetric observations of the transient magnetar and 5.54 s radio pulsar XTE J1810-197 using the GBT, Nancay, and Parkes radio telescopes beginning in early 2006, until its sudden disappearance as a radio source in late 2008. Repeated observations through 2016 have not detected radio pulsations again. The torque on the neutron star, as inferred from its rotation frequency derivative f-dot, decreased in an unsteady manner by a factor of 3 in the first year of radio monitoring. In contrast, during its final year as a detectable radio source, the torque decreased steadily by only 9%. The period-averaged flux density, after decreasing by a factor of 20 during the first 10 months of radio monitoring, remained steady in the next 22 months, at an average of 0.7+/-0.3 mJy at 1.4 GHz, while still showing day-to-day fluctuations by factors of a few. There is evidence that during this last phase of radio activity the magnetar had a steep radio spectrum, in contrast to earlier behavior. There was no secular decrease that presaged its radio demise. During this time the pulse profile continued to display large variations, and polarimetry indicates that the magnetic geometry remained consistent with that of earlier times. We supplement these results with X-ray timing of the pulsar from its outburst in 2003 up to 2014. For the first 4 years, XTE J1810-197 experienced non-monotonic excursions in f-dot by at least a factor of 8. But since 2007, its f-dot has remained relatively stable near its minimum observed value. The only apparent event in the X-ray record that is possibly contemporaneous with the radio shut-down is a decrease of ~20% in the hot-spot flux in 2008-2009, to a stable, minimum value. However, the permanence of the high-amplitude, thermal X-ray pulse, even after the radio demise, implies continuing magnetar activity.
description: ApJ, accepted, 12 pages, 9 figures
Migration and the evolution of skill supply and demand (Deliverable 3.3)
Creators: name: Bachmann, R.
name: Elewa, A.
name: Martin, L.
name: Rabaud, I.
name: Verheyden, B.
name: Voia, M.
Publisher: name: Zenodo
Year: 2023
Subjects: Natives, migrants, sector, region, occupation, education level, age, under-/over-supplied occupations, skills

description: As the European labour markets are characterised by an increasing share of migrants, it is vital to identify recent differences in skills supplied by migrant workers compared to natives. This paper analyses the skill supply in European labour markets by workers’ origin, providing evidence on the distribution of migrants across business sectors, occupations, and regions, as well as education level and age groups. These analyses over the period 2014 to 2021 and 19 EU countries reveal important differences between migrant and native workers. Using the current allocation of migrant and native workers across occupations, we identify the occupations that are under- or over-supplied in France and Germany over the period 2019 to 2021. We assess the role of migrants from European countries and from out of Europe in addressing the labour shortage faced by these two Western European labour markets. Using Online Job Vacancy data, we identify the composition and similarity of skill required of the most under-supplied occupations in France and Germany in 2021. We finally show the heterogeneity and evolution of skill demand within these occupations.
Module Design and Yield Evaluation of Indoor and Outdoor Measurements for Bifacial Modules
Creators: name: Daßler, D.
name: Malik, S.
name: Schindler, S.
name: Ebert, M.
name: Berrian, D.
name: Libal, J.
name: Karsenti, A.
name: Eisenberg, N.
Publisher: name: WIP
Year: 2020
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 1148-1154
description: The current worldwide market share of bifacial solar modules is around 10% in 2020 and is expected to increase to at least to 35% in 2030 [1]. Fundamental cell and module designs for bifacial PV exist but there is still a strong need for the development of dedicated module designs that are optimized in improved energy yield and of LCOE. To shape this development, work is conducted on optimization of bifacial solar modules with improved bifacial solar cells featuring highest bifaciality factors. Besides module development it is essential to improve the corresponding measurement procedures and tools for energy harvest calculation. In the successfully completed international Solar-era.net project “BiFaLo” the complete value chain was considered, starting with cell and module development, reliability studies, indoor and outdoor measurement campaigns and energy yield modelling. This paper will focus on module design and energy yield evaluation of outdoor measurements at three locations (Halle & Konstanz (Germany), Jerusalem (Israel)) to examine the variables that influence the gain of bifacial modules to determine and qualify improved module designs.
Bifacial Modules for Large Scale PV Plants: Lessons Learned and Current Limitations from a Factory/Manufacturing Inspection Outlook
Creators: name: Gómez, R.J.
name: Jiménez, E.
name: Sanz, D.
name: Sandoval, C.
name: Cuaresma, J.
name: Vázquez, J.C.
name: Rodríguez-Conde, S.
name: Silva, H.
name: Parra, V.
Publisher: name: WIP
Year: 2020
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 1155-1158
description: In this paper, we report on the lessons learned through the performance of manufacturing inspections of hundreds of MWp of bifacial PV modules produced by several Tier-1 suppliers. Special attention will be paid to the current limitations, inconsistencies and open issues that still need to be addressed by the industry when purchasing utility-scale based supplies of bifacial devices in a controlled way. We also study PID, LID and LeTID degradations of bifacial modules, revealing interesting and potentially risky asymmetries in the behaviour of each side.
Characterisation of Angular Dependent Optical Properties of Different Coloring Technologies Employed in BIPV Products
Creators: name: Babin, M.
name: Santamaria Lancia, A.A.
name: Thorseth, A.
name: Thorsteinsson, S.
Publisher: name: WIP
Year: 2020
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 1136-1142
description: Accurate determination of the angular dependent color of BIPV products is necessary to aid architects in matching BIPVs to surrounding building materials. A methodology for the study and characterization of visual appearance at different viewing angles is presented. This includes measurements of spectra of reflected light from BIPV samples for the determination of single-plane BRDF and IAM. BRDFs are converted to CIELAB color coordinates to analyze lightness, chroma and color saturation. Samples of three different technologies (printed ceramic inks, thin-film coatings and colored interlayers) are investigated. Results show vastly different angular dependency for sample groups, ranging from almost uniform (ceramic ink) to iridescent (thin-film coating) appearance. Differences are also observed between ceramic inks of different colors with correlation between specularity of reflection, IAM and angular constancy of appearance. For thin-film coated samples, correlation is shown between reflectance spectra, IAM and iridescence. Samples with colored interlayers show irregular angular appearance due to a textured glass surface.
Does Interior Insulation Damage Our Heritage?
Creators: name: Janssens, Kaat
name: Marincioni, Valentina
name: Van Den Bossche, Nathan
Publisher: name: Zenodo
Year: 2022

description: Since the external facades of our architectural heritage are protected and not allowed to be modified, our patrimony will have to be insulated from the inside during the renovation wave. However, interior retrofitting drastically changes the hygrothermal behaviour of a wall. These new conditions can induce different moisture-related problems such as freeze-thaw damage, mould growth, wood decay, condensation and corrosion. Whether or not damage will occur is dependent on many different parameters. Heat Air and Moisture simulations (HAM) can provide relevant insights for interior retrofitting practice but are rarely addressed. By creating a methodology to convey the results and insights from hygrothermal simulations to the building industry, decision-making for building practitioners will improve regarding risk management when interior retrofitting.
Towards rational design of carbon nitride photocatalysts: Identification of cyanamide "defects" as catalytically relevant sites
Creators: name: Lau, Vincent Wing-hei
name: Moudrakovski, Igor
name: Botari, Tiago
name: Weinburger, Simon
name: Mesch, Maria B.
name: Duppel, Viola
name: Senker, Jürgen
name: Blum, Volker
name: Lotsch, Bettina V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The heptazine-based polymer melon (also known as graphitic carbon nitride, g-C3N4), is a promising photocatalyst for hydrogen evolution. Nonetheless, attempts to improve its inherently low activity are rarely based on rational approaches due to a lack of fundamental understanding of its mechanistic operation. Here, we employ molecular heptazine-based model catalysts to identify the cyanamide moiety as a photocatalytically relevant "defect". We exploit this knowledge for the rational design of a carbon nitride polymer populated with cyanamide groups, yielding a material with 12- and 16-times the hydrogen evolution rate and apparent quantum efficiency (400 nm), respectively, compared to the benchmark melon. Computational modelling and material characterization suggest this moiety improves co-ordination (and, in turn, charge transfer kinetics) to the platinum co-catalyst and enhances the separation of the photo-generated charge carriers. The demonstrated knowledge transfer for rational catalyst design presented here provides the conceptual framework for engineering high performance heptazine-based photocatalysts.
description: Main article: 15 pages, 5 figures
Comparison of Double Glass and Glass/Backsheet Bifacial Module Designs
Creators: name: Gambogi, W.J.
name: Demko, M.
name: Yu, B.-L.
name: MacMaster, S.
name: Kurian, S.
name: Borne, A.
name: Hu, H.
name: Hu, Y.
name: Pan, Z.
name: Choudhury, K.R.
Publisher: name: WIP
Year: 2020
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 1143-1147
description: The adoption of bifacial modules continues to grow driven by the increased power for these designs in the field and progress in bifacial silicon cell technologies. An important consideration for adoption of this technology is the long-term durability of these module designs. While initial designs of bifacial modules have used double glass module structures, the greater weight and limited field experience with these module designs has raised some reliability concerns. Recently transparent backsheets have been developed which allow bifacial PV module designs that have higher manufacturing throughput and yield and build on the established field performance of these designs. In this paper, we will compare the performance and durability of these two designs over a broad range of key attributes and assess the strengths and weaknesses of each design approach. We will review the requirements and performance of transparent backsheets and demonstrate durability over a broad range of accelerated stress conditions. We will also incorporate field examples that point to the expected durability issues of each design approach and accelerated test methods to determine long term durability.
I-V Translation Procedure for Higher Accuracy and Compliance with PERC Cell Technology Requirements
Creators: name: Monokroussos, C.
name: Müllejans, H.
name: Gao, Q.
name: Herrmann, W.
Publisher: name: WIP
Year: 2020
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 1120-1125
description: The aim of this work was to re-evaluate the correction procedure 2 detailed in the IEC 60891, ed.2, because deviat ions (within 0.5% in PMAX and 1.0% in VOC) in the region between the maximum power point and open-circuit voltage have been observed between experimental and t ranslated IV curves in PERC module types. The equat ions used in correction procedure 2 were revised to account for: 1. non-linear scaling of VOC against logarithmic irradiance, 2. irradiance-dependent temperature coefficient of voltage, 3. backward compat ibility of IV t ranslat ion and 4. temperature dependence of series resistance. The new modified set of equat ions showed a reduct ion in the observed deviat ions between t ranslated and measured I-V curves, when compared to the use of the original formulas. The improvements are noticeable in VOC, where accuracy gains up to 2.5% have been observed. Smaller in magnitude (up to 0.3%) but systemat ic accuracy gains were also observed in PMAX.
Hierarchical Optimal Sampling (HOS): a tool for managing and manipulating wide-field imaging datasets - presentation at the Course of International School of Brain Cells and Circuits "Camillo Golgi" on "Modelling the Brain"
Creators: name: De Luca, Chiara
name: Bernava, Irene
name: De Bonis, Giulia
name: Lupo, Cosimo
name: Simula, Francesco
name: Resta, Francesco
name: Montagni, Elena
name: Mascaro, Anna Letizia Allegra
name: Pavone, Francesco Saverio
name: Paolucci, Pier Stanislao
Publisher: name: Zenodo
Year: 2022
Subjects: Wide-field Imaging, Spatial Resolution, Signal-to-Noise Ratio, Data Capability, Analysis Pipeline, Algorithm, Software Tool

description: Presentation on Hierarchical Optimal Sampling: a tool for managing and manipulating wide-field imaging datasets. Powerful recording techniques and increasing anatomical knowledge provided by atlases allow studying the brain at a new level with unprecedented spatial resolution as that achieved with wide-field calcium imaging data. One of the the main issues related to the increase of the spatial resolution is to find the optimal condition which allows to obtain an appropriate signal-to-noise ratio for each channel, relative to the phenomenon of interest. Hierarchical Optimal Sampling (HOS) provides a data-driven inhomogeneous gridding of the field of view with the optimal spatial resolution that preserves and emphasizes the majority of the information from the high number of native signal sources.
Belief Merging by Source Reliability Assessment
Creators: name: Liberatore, Paolo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Merging beliefs requires the plausibility of the sources of the information to be merged. They are typically assumed equally reliable in lack of hints indicating otherwise; yet, a recent line of research spun from the idea of deriving this information from the revision process itself. In particular, the history of previous revisions and previous merging examples provide information for performing subsequent mergings. Yet, no examples or previous revisions may be available. In spite of the apparent lack of information, something can still be inferred by a try-and-check approach: a relative reliability ordering is assumed, the merging process is performed based on it, and the result is compared with the original information. The outcome of this check may be incoherent with the initial assumption, like when a completely reliable source is rejected some of the information it provided. In such cases, the reliability ordering assumed in the first place can be excluded from consideration. The first theorem of this article proves that such a scenario is indeed possible. Other results are obtained under various definition of reliability and merging.
Apollo Large-Area Steady-State Solar Simulator as a Versatile Tool for PV Device Performance Measurements
Creators: name: Müllejans, H.
name: Salis, E.
name: Pavanello, D.
name: Bardizza, G.
name: Lopez-Garcia, J.
name: Zaaiman, W.
name: Shaw, D.
name: Sample, T.
name: Dunlop, E.D.
Publisher: name: WIP
Year: 2020
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 1126-1129
description: This work reports on the classification of the APOLLO large-area steady-state solar simulator at the European Solar Test Installation and a wide range of measurement procedures implemented for the characterisation of electrical performance of PV devices. The simulator is class AAA and allows measurement of electrical performance over a wide range of irradiance and device temperature (e.g. power matrix). Furthermore, bi-facial PV devices as well as emerging PV technologies can be measured and last not least linearity.
Method for Evaluating the Severity of Solar Cell Cracks in Electroluminescence Images
Creators: name: Spataru, S.V.
name: Dos Reis Benatto, G.A.
name: Hass, T.K.
name: Santamaria Lancia, A.A.
name: Poulsen, P.B.
name: Thorsteinsson, S.
Publisher: name: WIP
Year: 2020
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 1130-1135
description: The severity of solar cell cracks is most often evaluated qualitatively, by assigning them to one of several categories. In this work we propose a machine analysis friendly metric for evaluating the severity of solar cell cracks from electroluminescence (EL) images. The metric is derived from the EL intensity versus camera sensor exposure time characteristic of the active solar cell regions, relative to that of non-radiative regions of the EL image. Thereafter an image segmentation method is used to determine the area and position of cracks above a certain severity level.
Seasonal Performance Assessment of Various PV Technologies in a Desert Climate through Device Simulations and Outdoor Measurements
Creators: name: Katsaounis, T.
name: Kotsovos, K.
name: Gereige, I.
name: Basaheeh, A.
name: Abdullah, M.
name: Khayat, A.
name: Al Habshi, E.
name: Al-Saggaf, A.
name: Tzavaras, A.
Publisher: name: WIP
Year: 2020
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 1112-1116
description: Middle East is considered as one the most promising areas for PV deployment due to its vast solar potential. Successful deployment of PV systems in the region is challenging, however, due to local weather conditions. Frequent dust storms in these areas cause heavy soiling on PV module surface and significantly affecting the solar panels performance. In addition, the combination of high ambient temperatures and increased UV irradiance levels pose additional challenges in PV module reliability. This work focuses on the influence of local climate effects on the performance and energy yield of various PV module technologies by processing local weather data over various periods. Simulation data are validated with outdoor IV measurements on various types of commercial c-Si based PV modules, located at KAUST University, Western Region of Saudi Arabia.
Capitalism and its revolutionary destruction : a statement
Creators: name: Wildcat (Organization)
Publisher: name: University of Victoria Libraries
Year: 2020
Subjects: subject: Revolutions
valueUri: http://id.worldcat.org/fast/1096737
subject: Demonstrations
valueUri: http://id.worldcat.org/fast/890222
subject: Anarchists
valueUri: http://id.worldcat.org/fast/808401
subject: Wildcat (Organization)
valueUri: http://id.worldcat.org/fast/1660357
subject: Capitalism
valueUri: http://id.worldcat.org/fast/846425
subject: Authority
valueUri: http://id.worldcat.org/fast/821653
subject: Anarchism
valueUri: http://id.worldcat.org/fast/808387
subject: Communism
valueUri: http://id.worldcat.org/fast/870421

description: "This pamphlet has been produced as a first draft to give a brief introduction to the ideas of the Wildcat group. We are producing it not as some definitive statement of revolutionary theory, but rather as a tool for dialogue."--Intro. The Wildcat group was active in England with contacts in Manchester, Newcastle, and London.
Environmental Stability of the Semi-Flexible HJT Solar Panels
Creators: name: Yakovlev, S.
name: Schebet, E.
name: Emtsev, K.
name: Andronikov, D.
name: Abramov, A.
name: Orekhov, D.
name: Shakhray, I.
Publisher: name: WIP
Year: 2020
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 1117-1119
description: Environmental stability of the semi-flexible solar modules assembled from Si heterojunction (HJT) solar cells and PETbased protective sheets is investigated. Main defects and degradation of electrical characteristics after thermocycling and damp heat tests as per IEC 61215 standard are presented. Differences in the thermocycling effect of semi-flexible modules based on non-crosslinking TPO and crosslinking POE encapsulants were shown. The environmental stability of mounting semi-flexible modules on a rigid plate with thin double-sided tape was tested.
The Bypass-Diode – A Weakness in Today's PV Systems
Creators: name: Gfeller, D.
name: Neukomm, R.
name: Muntwyler, U.
Publisher: name: WIP
Year: 2020
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 1100-1107
description: Remarkable progress has been made in the technology of photovoltaic power systems over the past 40 years. Even though the vast majority of all solar modules are still based on crystalline silicon cells, the efficiency of these modules has more than doubled, which has a considerable impact on the electrical parameters of the solar generator. This is particularly noticeable in the operating current. Because of the higher efficiency, but especially due to the increase in cell area, this current has more than tripled in the last four decades. The string current of modern PV arrays is so high, that with partial shading, a danger exists that the bypass diodes may overheat and be damaged or destroyed. This can lead to consequential damage and in the worst case lead to a fire. This contribution focuses on the problems of today's bypass diode concepts. It also discusses current and possible future developments to solve these problems.
Ba2YIrO6: A cubic double perovskite material with Ir5+ ions
Creators: name: Dey, T.
name: Maljuk, A.
name: Efremov, D. V.
name: Kataeva, O.
name: Gass, S.
name: Blum, C. G. F.
name: Steckel, F.
name: Gruner, D.
name: Ritschel, T.
name: Wolter, A. U. B.
name: Geck, J.
name: Hess, C.
name: Koepernik, K.
name: Brink, J. van den
name: Wurmehl, S.
name: Büchner, B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Materials with a 5d4 electronic configuration are generally considered to have a nonmagnetic ground state (J=0). Interestingly, Sr2YIrO6 (Ir5+ having 5d4 electronic configuration) was recently reported to exhibit long-range magnetic order at low temperature and the distorted IrO6 octahedra were discussed to cause the magnetism in this material. Hence, a comparison of structurally distorted Sr2YIrO6 with cubic Ba2YIrO6 may shed light on the source of magnetism in such Ir5+ materials with 5d4 configuration. Besides, Ir5+ materials having 5d4 are also interesting in the context of recently predicted excitonic types of magnetism. Here we report a single-crystal-based analysis of the structural, magnetic, and thermodynamic properties of Ba2YIrO6. We observe that in Ba2YIrO6 for temperatures down to 0.4 K, long-range magnetic order is absent but at the same time correlated magnetic moments are present. We show that these moments are absent in fully relativistic ab initio band-structure calculations; hence, their origin is presently unclear.
description: 8 pages, 9 figures
Glass-Free Lightweight Solar Modules for Integrated Photovoltaics: the Use of Velcro as an Alternative Mounting System
Creators: name: Lisco, F.
name: Oliveira Martins, A.C.
name: Virtuani, A.
name: Ballif, C.
Publisher: name: WIP
Year: 2020
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 1108-1111
description: For some PV applications, the weight of c-Si PV modules is a crucial aspect that needs to be addressed. Commercial and industrial buildings sometimes cannot be designed for conventional rooftop solar installations, especially without costly structural improvement. Also particular PV systems, such as, PV elements for foldable parking roofs or greenhouses need lightweight modules to enable cost effective mounting structures. Often, when old buildings undergo renovation, excessive loads are often not well tolerated by roofs or other architectural structures (e.g. facades). The adoption of conventional PV in these contexts could represent a crucial limit. The use of Lightweight modules appear very attractive, especially for the building-integration of photovoltaics (BIPV), Building Applied Photovoltaic systems (BAPV) as for Vehicles integrated PV (VIPV), due to their reduced weight and strong improvements in durability. One of the great advantages of using a lightweight module structure stands in the possibility to develop a cheap and practical mounting system solution. This is currently becoming a relevant topic, as the share of costs for mounting structures has significantly increased in the last years. Considering the option of “frameless lightweight modules” may also have a dramatic effect in lowering the transport costs. With this work, an alternative installation for lightweight (6 kg/m2) photovoltaic module is proposed. Modules with a composite sandwich backsheet and a polymeric frontsheet structure were manufactured with a new mounting system based on the use of Velcro (Hook-and-Loop). We demonstrate how this alternative mounting system allows a fast and easier mounting that comply with the static mechanical load test present in the IEC 61215.
Trend Tracking of Efficiency and CTM Ratio of PV Modules
Creators: name: Tummalieh, A.
name: Pfreundt, A.
name: Mittag, M.
Publisher: name: WIP
Year: 2020
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 1091-1095
description: In this study, historical and present PV module concepts are analyzed concerning efficiency, output power and cell-to-module (CTM) ratio by simulating PV modules with different components over the period between 2009 and 2019. Furthermore, the changes occurring in important gain and loss channels within PV modules are illustrated as they are affected by the changes in module design and solar cell performance. Results show that in the last decade, the PV module output power and efficiency exhibit an absolute increase of about +85 Wp and +5.3% corresponding to a yearly rate of about +7.7 Wp and +0.48% respectively. Moreover, gain and loss factors show their impact on the CTM-ratio for both PV module power and efficiency, which also exhibits an absolute increase of about +3.2% and 3.4% respectively. Loss factors in the module such as power loss in cell interconnections show high sensitivity regarding the solar cell output current and the metallization pattern. On the other hand, optical loss and gain factors show a strong dependency on the use of the anti-reflective-coating and the encapsulation and backsheet materials used.
Enhancing PV Module Thermomechanical Performance and Reliability by an Innovative Mounting Solution
Creators: name: Beinert, A.J.
name: Masolin, A.
Publisher: name: WIP
Year: 2020
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 1096-1099
description: Using mechanical finite element method simulations, we compare the mechanical stability of an innovative mounting solution for PV modules to that of a conventionally framed module. The innovative mounting solution (Coolback® system) is a combined mounting and passive cooling structure which replaces the backsheet and the frame. We simulate the mechanical load test comparing a conventionally framed module to one using the Coolback® system. Both laminates are identical and consist of a 60-cell and a 144-half-cell/72-cell configuration. The finite element method simulations show that the cooling fins reduce the deflection of the module significantly, resulting in negligible solar cell fracture probabilities for all loads. Especially at high loads, where the framed module has a high solar cell fracture probability, the increased mechanical stability caused by the cooling fins helps to reduce cell fracturing.
Double layer for hard spheres with an off-center charge
Creators: name: Silvestre-Alcantara, W.
name: Bhuiyan, L. B.
name: Lamperski, S.
name: Kaja, M.
name: Henderson, D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Simulations for the density and potential profiles of the ions in the planar electrical double layer of a model electrolyte or an ionic liquid are reported. The ions of a real electrolyte or an ionic liquid are usually not spheres; in ionic liquids, the cations are molecular ions. In the past, this asymmetry has been modelled by considering spheres that are asymmetric in size and/or valence (viz., the primitive model) or by dimer cations that are formed by tangentially touching spheres. In this paper we consider spherical ions that are asymmetric in size and mimic the asymmetrical shape through an off-center charge that is located away from the center of the cation spheres, while the anion charge is at the center of anion spheres. The various singlet density and potential profiles are compared to (i) the dimer situation, that is, the constituent spheres of the dimer cation are tangentially tethered, and (ii) the standard primitive model. The results reveal the double layer structure to be substantially impacted especially when the cation is the counterion. As well as being of intrinsic interest, this off-center charge model may be useful for theories that consider spherical models and introduce the off-center charge as a perturbation.
description: 11 pages, 7 figures
Survey Observations of a Possible Glycine Precursor, Methanimine (CH$_2$NH)
Creators: name: Suzuki, Taiki
name: Ohishi, Masatoshi
name: Hirota, Tomoya
name: Saito, Masao
name: Majumdar, Liton
name: Wakelam, Valentine
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We conducted survey observations of a glycine precursor, methanimine or methylenimine (CH$_2$NH), with the NRO 45 m telescope and the SMT telescope towards 12 high-mass and two low-mass star-forming regions in order to increase number of CH$_2$NH sources and to better understand the characteristics of CH2NH sources. As a result of our survey, CH$_2$NH was detected in eight sources, including four new sources. The estimated fractional abundances were ~10$^8$ in Orion KL and G10.47+0.03, while they were ~10$^9$ towards the other sources. Our hydrogen recombination line and past studies suggest that CH$_2$NH-rich sources have less evolved HII regions. The less destruction rates by UV flux from the central star would be contributed to the high CH$_2$NH abundances towards CH$_2$NH-rich sources. Our gas-grain chemical simulations suggest that CH$_2$NH is mostly formed in the gas-phase by neutral-neutral reactions rather than the product of thermal evaporation from the dust surfaces.
description: 49 pages, 12 figures, accepted to ApJ
D3.5: Report on the suitability of the actual reference data sets for deep Argo DMQC
Creators: name: Walicka, Kamila
name: King, Brian
name: Thierry, Virginie
name: Cabanes, Cécile
name: Vélez-Belchí, Pedro
name: Coatanoan, Christine
name: Notarstefano, Giulio
name: Gallo, Antonella
name: González-Santana, Alberto
Publisher: name: Zenodo
Year: 2022

description: This report provides an assessment of the availability and quality of the CTD reference data for Argo for the regions of deployments of the deep European Argo fleet.
Improving Computational Efficiency of Mechanical Finite Element Method Simulations for PV Modules
Creators: name: Bosco, N.
name: He, X.
name: Springer, M.
Publisher: name: WIP
Year: 2020
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 1079-1081
description: In this work we have elucidated the tradeoff between structural mechanics FEM model accuracy and computation time by employing lower fidelity viscoelastic models for a module’s encapsulant. Results indicate that computation time can easily be cut in half while only expecting a potential maximum error of 10 % by considering lower fidelity models.