cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Optimal Configuration of Module Connections for Minimising the Shading Effect in Multi-Rows PV Arrays
Creators: name: Spertino, F.
name: Di Leo, P.
name: Sumaili Akilimali, J.
Publisher: name: WIP-Munich
Year: 2009
Subjects: PV Systems
PV Power Plants

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 4136-4140
description: In large grid-connected PV systems it is a normal condition to accept periodic shading among the rows
in the morning and in the evening. In fact, the designer does not take into account this shading when he decides the
module connections in the strings, the number of modules per string and the arrangement, according to the longest
side of the modules, in horizontal or vertical direction. This paper discusses, by suitable comparisons, various cases
of shading pattern in PV arrays from multiple viewpoints: power profiles in clear days with 15-min time step, daily
energy as a monthly average value for clear and cloudy days. The simulation results prove that, with simple structure
of the array and important amount of shading, it is better to limit the shading effect within one string rather than to
distribute the shading on all the strings: the gains are higher than 10% in the worst month and 1% on yearly basis.
Contrary, with more complex structure of the array and low amount of shading, it is practically equivalent to
concentrate or to distribute the shading on all the strings. Finally, in the simulation conditions the impact of the
shading losses on yearly basis is limited to 1-3%.
Nonlinear supercoherent states and geometric phases for the supersymmetric harmonic oscillator
Creators: name: Díaz-Bautista, Erik
name: C, David J. Fernández
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Nonlinear supercoherent states, which are eigenstates of nonlinear deformations of the Kornbluth-Zypman annihilation operator for the supersymmetric harmonic oscillator, will be studied. They turn out to be expressed in terms of nonlinear coherent states, associated to the corresponding deformations of the standard annihilation operator. We will discuss as well the Heisenberg uncertainty relation for a special particular case, in order to compare our results with those obtained for the Kornbluth-Zypman linear supercoherent states. As the supersymmetric harmonic oscillator executes an evolution loop, such that the evolution operator becomes the identity at a certain time, thus the linear and nonlinear supercoherent states turn out to be cyclic and the corresponding geometric phases will be evaluated.
description: 26 pages, 14 figures
High Performance Multi-Junction Solar Cells Fabricated By Liquid Phase Epitaxy
Creators: name: Lu, X.
name: Huang, S.R.
name: Wang, Y.
name: Opila, R.L.
name: Barnett, A.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Advanced Photovoltaics
New Materials, Cells and Modules

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 299-304
description: Silicon is an excellent platform for multi-junction solar cells. High performance materials can be grown on the
Si platform using liquid phase epitaxy (LPE) which is a versatile growth technique for fabricating multi-junction solar cells.
A range of high band gap solar cells can be grown by first growing GaP on silicon and then growing the lower band gap solar
cells on this GaP layer, such as GaAsP, InGaP and GaP. Si:Ge low band gap alloy solar cells can be grown as well as high
performance silicon solar cells by LPE. In this paper, a first principle calculation method has been used to calculate the
theoretical efficiency of a 5-junction solar cell system based on a Si platform. We have demonstrated that it is possible to
grow various junctions of this 5-junction system by LPE. These include a GaP/Si hetero structure, a stand alone
GaP(2.26eV) solar cell which can be grown on the previous GaP/Si template in the future, a high quality Si solar cell, and a
Si:Ge solar cell on Si substrates. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) have been used to
characterize the surface morphology and quality of our growth layers. I-V measurements are used to test the performance of
these solar cell devices.
Large-scale magnetic fields can explain the baryon asymmetry of the Universe
Creators: name: Fujita, Tomohiro
name: Kamada, Kohei
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Helical hypermagnetic fields in the primordial Universe can produce the observed amount of baryon asymmetry through the chiral anomaly without any ingredients beyond the standard model of particle physics. While they generate no $B-L$ asymmetry, the generated baryon asymmetry survives the spharelon washout effect, because the generating process remains active until the electroweak phase transition. Solving the Boltzmann equation numerically and finding an attractor solution, we show that the baryon asymmetry of our Universe can be explained, if the present large-scale magnetic fields indicated by the blazar observations have a negative helicity and existed in the early Universe before the electroweak phase transition. We also derive the upper bound on the strength of the helical magnetic field, which is tighter than the cosmic microwave background constraint, to avoid the overproduction of baryon asymmetry.
description: 21 pages, 5 figures; v2: comments and references added, matches version published in PRD
On the energy conversion efficiency of the bulk photovoltaic effect
Creators: name: Pusch, Andreas
name: Römer, Udo
name: Culcer, Dimitrie
name: Ekins-Daukes, Nicholas J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The bulk photovoltaic effect (BPVE) leads to directed photo-currents and photo-voltages in bulk materials. Unlike photo-voltages in p-n junction solar cells that are limited by carrier recombination to values below the bandgap energy of the absorbing material, the BPVE photo-voltages have been shown to greatly exceed the bandgap energy. Therefore the BPVE is not subject to the Shockley-Queisser limit for sunlight to electricity conversion in single junction solar cells and experimental claims of efficiencies beyond this limit have been made. Here, we show that BPVE energy conversion efficiencies are, in practice, orders of magnitude below the Shockley-Queisser limit of single junction solar cells and are subject to different, more stringent limits. The name BPVE stands for two different fundamental effects, the shift current and the injection current. In both of these, the voltage bias necessary to produce electrical energy, accelerates both, intrinsic and photo-generated, carriers. We discuss how energy conservation alone fundamentally limits the BPVE to a bandgap-dependent value that exceeds the Shockley Queisser limit only for very small bandgaps. Yet, small bandgap materials have a large number of intrinsic carriers, leading to high conductivity which suppresses the photo-voltage. We discuss further how slightly more stringent fundamental limits for injection (ballistic) currents may be derived from the trade-off between high resistivity, needed for a high voltage, and long ballistic transport length, needed for a high current. We also explain how erroneous experimental and theoretical claims of high efficiency have arisen. Finally, we calculate the energy conversion efficiency for an example 2D material that has been suggested as candidate material for high efficiency BPVE based solar cells and show that the efficiency is very similar to the efficiency of known 3D materials.
description: 23 pages, 6 figures
Competing damage mechanisms in a two-phase microstructure: how microstructure and loading conditions determine the onset of fracture
Creators: name: de Geus, T. W. J.
name: Peerlings, R. H. J.
name: Geers, M. G. D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: This paper studies the competition of fracture initiation in the ductile soft phase and in the comparatively brittle hard phase in the microstructure of a two-phase material. A simple microstructural model is used to predict macroscopic fracture initiation. The simplicity of the model ensures highly efficient computations, enabling an comprehensive study: a large range of hard phase volume fractions and yield stress ratios, for wide range of applied stress states. Each combination of these parameters is analyzed using a large set of (random) microstructures. It is observed that only one of the phases dominates macroscopic fracture initiation: at low stress triaxiality the soft phase is dominant, but above a critical triaxiality the hard phase takes over resulting in a strong decrease in ductility. This transition is strongly dependent on microstructural parameters. If the hard phase volume fraction is small, the fracture initiation is dominated by the soft phase even at high phase contrast. At higher hard phase volume fraction, the hard phase dominates already at low phase contrast. This simple model thereby reconciles experimental observations from the literature for a specific combination of parameters, which may have triggered contradictory statements in the past. A microscopic analysis reveals that the average phase distribution around fracture initiation sites is nearly the same for the two failure mechanisms. Along the tensile direction, regions of the hard phase are found directly next to the fracture initiation site. This `band' of hard phase is intersected through the fracture initiation site by `bands' of the soft phase aligned with shear. Clearly, the local mechanical incompatibility is dominant for the initiation of fracture, regardless whether fracture initiates in the soft or in the hard phase.
title: Revealing the strength of eWOM intentions in environmental CSR advertising campaign on Instagram
title: The role of regulatory focus message, self-construal, and number of followers
titleType: Subtitle
Creators: name: Joo, Jinho
Publisher: name: Washington State University
Year: 2022

description: The purpose of this research is to study the strength of electronic word of mouth intention in the context of environmental CSR advertising campaign on Instagram. This research developed an online experiment to test whether the moderation of the indirect effects of regulatory-focused messages by self-construal was moderated by the number of followers. Results showed that the indirect effect of a promotion-focused message on electronic word of mouth intention through attitudes toward environmental CSR advertising campaign on Instagram was stronger for those with higher interdependent-self construal. However, the moderation of the indirect effect of a promotion-focused message by interdependent self-construal did not differ between a low and a high number of followers. This research advances our understanding of eWOM intention in environment CSR advertising campaign on Instagram by integrating both message and individual characteristics into the strength of eWOM intention. This research also provides new perspectives on the effects of InterSC on cognition and motivation.
Study of Cu3BiS3 Thin Films Prepared by Co-Evaporation
Creators: name: Mesa, F.
name: Calderón, C.
name: Bartolo-Peréz, P.
name: Gordillo, G.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Advanced Photovoltaics
New Materials, Cells and Modules

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 243-246
description: This work presents results concerning the synthesis and characterization of Cu3BiS3 thin films
deposited by co-evaporation of their precursor elements in a two stage process. The effect of the preparation
conditions on the optical and structural properties, as well as on the chemical composition was studied through
spectral transmittance, X-ray diffraction (XRD) and Auger electron spectroscopy (AES) depth profile, respectively.
The results revealed that, independently of the deposition conditions, the films grow only in the orthorhombic
Cu3BiS3 wittichenite phase. It was also found that the Cu3BiS3 films present p-type conductivity, a high absorption
coefficient (greater than 104 cm-1) and an energy band gap Eg of about 1.39 eV, indicating that this compound has
good properties to perform as absorbent layer in thin film solar cells. From the AES depth profile measurements,
information was found indicating that the Cu3BiS3 films grow with homogeneous chemical composition along the
whole bulk.
Demonstration of qubit operations below a rigorous fault tolerance threshold with gate set tomography
Creators: name: Blume-Kohout, Robin
name: Gamble, John King
name: Nielsen, Erik
name: Rudinger, Kenneth
name: Mizrahi, Jonathan
name: Fortier, Kevin
name: Maunz, Peter
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Quantum information processors promise fast algorithms for problems inaccessible to classical computers. But since qubits are noisy and error-prone, they will depend on fault-tolerant quantum error correction (FTQEC) to compute reliably. Quantum error correction can protect against general noise if -- and only if -- the error in each physical qubit operation is smaller than a certain threshold. The threshold for general errors is quantified by their diamond norm. Until now, qubits have been assessed primarily by randomized benchmarking, which reports a different "error rate" that is not sensitive to all errors, and cannot be compared directly to diamond norm thresholds. Here we use gate set tomography (GST) to completely characterize operations on a trapped-Yb$^+$-ion qubit and demonstrate with very high ($>95\%$) confidence that they satisfy a rigorous threshold for FTQEC (diamond norm $\leq6.7\times10^{-4}$).
description: 17 pages, 8 figures
VINTERGATAN-GM: The cosmological imprints of early mergers on Milky-Way-mass galaxies
Creators: name: Rey, Martin P.
name: Agertz, Oscar
name: Starkenburg, Tjitske K.
name: Renaud, Florent
name: Joshi, Gandhali D.
name: Pontzen, Andrew
name: Martin, Nicolas F.
name: Feuillet, Diane K.
name: Read, Justin I.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a new suite of cosmological zoom-in hydrodynamical ($\approx 20\, \mathrm{pc}$ spatial resolution) simulations of Milky-Way mass galaxies to study how a varying mass ratio for a Gaia-Sausage-Enceladus (GSE) progenitor impacts the $z=0$ chemodynamics of halo stars. Using the genetic modification approach, we create five cosmological histories for a Milky-Way-mass dark matter halo ($M_{200} \approx 10^{12} \, M_\mathrm{\odot}$), incrementally increasing the stellar mass ratio of a $z\approx2$ merger from 1:25 to 1:2, while fixing the galaxy's final dynamical, stellar mass and large-scale environment. We find markedly different morphologies at $z=0$ following this change in early history, with a growing merger resulting in increasingly compact and bulge-dominated galaxies. Despite this structural diversity, all galaxies show a radially-biased population of inner halo stars like the Milky-Way's GSE which, surprisingly, has a similar magnitude, age, $\rm [Fe/H]$ and $\rm [α/Fe]$ distribution whether the $z\approx2$ merger is more minor or major. This arises because a smaller ex-situ population at $z\approx2$ is compensated by a larger population formed in an earlier merger-driven starburst whose contribution to the GES can grow dynamically over time, with both populations strongly overlapping in the $\rm [Fe/H]-\rm [α/Fe]$ plane. Our study demonstrates that multiple high-redshift histories can lead to similar $z=0$ chemodynamical features in the halo, highlighting the need for additional constraints to distinguish them, and the importance of considering the full spectrum of progenitors when interpreting $z=0$ data to reconstruct our Galaxy's past.
description: Matching accepted version after minor changes
Pachycephala melanura subsp. bynoei Mathews
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
Pachycephalidae
Pachycephala

description: Pachycephala melanura bynoei Mathews Pachycephala melanura bynoei Mathews, 1918a: 136 (Port Hedland). Now Pachycephala melanura melanura Gould, 1843. See Galbraith, 1956: 199, Schodde and Mason, 1999: 445–446, and Boles, 2007: 427. HOLOTYPE: AMNH 657830, adult male, collected at Port Hedland, 20.24S, 118.36E (Times Atlas), Western Australia, Australia, on 22 October 1914, by F. Lawson Whitlock for Henry L. White. From the Mathews Collection via the Rothschild Collection. COMMENTS: In the original description, Mathews described only the male and said that his type was collected at Port Hedland on 22 October 1913. AMNH 657830 is the only Port Hedland specimen from the Mathews Collection. The H.L. White label is marked ‘‘ Type of bynoei’’ by Mathews, and the specimen bears in addition a Mathews and a Rothschild type label. Mathews did not catalog specimens collected as late as 1914. Mayr (1967: 23–24) recognized bynoei and included it in P. pectoralis. See Schodde and Mason (1999: 445–446) for a discussion of species and subspecies limits.
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 26
description: {"references": ["Mathews, G. M. 1918 a. On Pachycephala melanura Gould. Austral Avian Record 3: 134 - 138.", "Galbraith, I. C. J. 1956. Variation, relationships and evolution in the Pachycephala pectoralis superspecies (Aves, Muscicapidae). Bulletin of the British Museum (Natural History) Zoology 4: 133 - 222, map.", "Schodde, R., and I. J. Mason. 1999. The directory of Australian birds. Passerines. Collingwood, Victoria: CSIRO Publishing, 851 pp.", "Boles, W. E. 2007. Family Pachycephalidae. In: J. del Hoyo, A. Elliott, and D. A. Christie (editors), Handbook of birds of the world, volume 12: 374 - 437. Barcelona: Lynx Edicions, 816 pp., 56 pls, 436 photographs.", "White, S. A. 1914. Scientific notes on an expedition into the interior of Australia carried out by Capt. S. A. White, M. B. O. U., from July to October, 1913. Transactions and Proceedings of the Royal Society of South Australia 38: 407 - 438, map.", "Mayr, E. 1967. Family Muscicapidae, Subfamily Pachycephalinae and Genus Incertae sedis. In R. A. Paynter, Jr. (editor), Check-list of birds of the world, volume 12: 1 - 52. Cambridge, MA: Museum of Comparative Zoology, 495 pp."]}
Contact Regimes in the Wire Sawing Process: Explicit 3D Modeling of PEG/SiC Slurry
Creators: name: Bierwisch, C.
name: Weber, B.
name: Moseler, M.
name: Kleer, G.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Cells and Materials, Processing Technology of

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1104-1108
description: The present work is aiming at a more profound understanding of the occurrence of different contact regimes during the wire sawing process depending on wire velocity, wire load and grain size distribution. The process is investigated using a state of the art three-dimensional simulation tool for modeling of suspensions. The gained knowledge is to provide the scientific base for the optimization of sawing rates and reduction of kerf loss. The present approach yields insight into the dynamics of the interaction between wire, slurry, and silicon material at an
unpreceded microscopic level of detail.
Fracture initiation in multi-phase materials: a statistical characterization of microstructural damage sites
Creators: name: de Geus, T. W. J.
name: van Duuren, J. E. P.
name: Peerlings, R. H. J.
name: Geers, M. G. D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Understanding the microstructural influence on the failure mechanisms in multi-phase materials calls for the identification of the worst-case scenario. This necessitates a statistical approach. By performing simulations directly based on micrographs, such an approach becomes feasible. This is applied here to extract the average microstructure around damage sites.
title: TRANSCRIPTOMIC CHARACTERIZATION OF CANINE SOFT TISSUE SARCOMAS
title: SUBTYPE AND SURVIVAL ANALYSIS
titleType: Subtitle
Creators: name: Lam, Lydia
Publisher: name: Washington State University
Year: 2022

description: Soft tissue sarcomas are a heterogenous group of mesenchymal cancers that include more than 80 histological subtypes. Soft tissue sarcomas make up less than one percent of all adult cancers and this rare occurrence, combined with their variable presentation, makes soft tissue sarcomas difficult to both diagnose and treat. In the past two decades, considerable effort has been put into improving care for soft tissue sarcoma patients with a focus being put on tailored treatment based on histological subtype. These efforts have been driven by advancements in technologies, such as next generation sequencing, that have allowed genetic and molecular characterization of individual soft tissue sarcoma subtypes. However, challenges remain in the development of new therapeutics. Due to the limited number of patients with soft tissue sarcomas, clinical trials often combine multiple subtypes thereby potentially diluting the detection of therapeutic activity. Pet dogs may provide an additional avenue for the discovery and testing of new therapeutics. Soft tissue sarcomas comprise 15% of all canine cancers. Along with the higher incidence, the use of dogs as a model provides additional benefits such as the cancers arising spontaneously in an intact immune system and exposure to similar environments as humans. However, much less is known about the genetic components of different canine soft tissue sarcoma subtypes. This dissertation attempts to provide insight by performing transcriptomic analysis on the three most common canine soft tissue sarcoma histotypes. First, we show that it is possible to get robust sequencing data from archived canine soft tissue sarcoma samples and that the gene expression profiles of canine soft tissue sarcoma tumors can be used, in conjunction with histology, to provide a more accurate subtype diagnosis. Second, we identify potential transcription factors whose dysregulation may lead to tumorigenesis of canine soft tissue sarcomas in general as well as development of each subtype. Lastly, we identify potential drivers of patient survival in canine soft tissue sarcomas. Together, our data highlights potential drivers of canine soft tissue sarcoma as well as what differences in gene expression may drive the formation and behavior of one subtype versus another.
The Meta PV Project: Photovoltaics for Active Distribution Systems
Creators: name: Vu Van, T.
name: Woyte, A.
name: Harris, F.
name: De Gheselle, L.
name: Palmers, G.
name: Neyens, J.
name: Truyens, F.
name: Bletterie, B.
name: Brunner, H.
name: De Brabandere, K.
name: Reekers, J.
name: Sporleder, M.
name: Blazic, B.
name: Papic, I.
name: Engelen, R.
name: Alenus, J.
Publisher: name: WIP-Munich
Year: 2009
Subjects: PV Systems
PV Power Plants

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 4132-4135
description: MetaPV is the first project world-wide that will demonstrate the provision of electrical benefits from
photovoltaics (PV) on a large scale. Additional benefits for active grid support from PV will be demonstrated at two
sites: a residential/urban area of 128 households with 4 kWp each, and an industrial zone of 31 PV systems with 200
kWp each in Limburg, Belgium. In this project, the enhanced control capacities to be implemented into PV inverters
and demonstrated are active voltage control, fault ride-through capability, autonomous grid operation, and interaction
of distribution system control with PV systems. A detailed technical and economic assessment of the additional
services from PV is carried out. The role of PV in an area fully supplied by renewable sources is to be assessed. The
MetaPV project is accepted for funding by the European Commission in the 7th Framework Programme. It starts in
October 2009 and lasts to March 2014. The consortium consists of six partners from four EU countries.
On the 3-form formulation of axion potentials from D-brane instantons
Creators: name: García-Valdecasas, Eduardo
name: Uranga, Angel
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The study of axion models and quantum corrections to their potential has experienced great progress by phrasing the axion potential in terms of a 3-form field eating up the 2-form field dual to the axion. Such reformulation of the axion potential has been described for axion monodromy models, and for axion potentials from non-perturbative gauge dynamics. In this paper we propose a 3-form description of the axion potentials from non-gauge D-brane instantons. Interestingly, the required 3-form field does not arise in the underlying geometry, but rather shows up in the KK compactification in the generalized geometry obtained when the backreaction of the D-brane instanton is taken into account.
description: 17 pages. Minor changes
Investigations on Single Wire Cuts in Silicon
Creators: name: Anspach, O.
name: Stabel, A.
name: Lawerenz, A.
name: Riesner, S.
name: Porytskyy, R.
name: Schulze, F.-W.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Feedstock, Crystallisation and Wafering

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1098-1103
description: Slots were cut into multicrystalline silicon using a single wire setup of a standard industrial wire saw. In this work slurries with different abrasives and carrier fluids were formulated to obtain the influence of the composition of the slurry on the wire sawing process and its resulting single slots. Furthermore a combination of sawing parameters like table forward speed and wire speed were set to investigate changes in the “abrasive performance“ of the wire sawing process. Slot width, TTV of the slot, crack depth distribution, sawing efficiency, vertical force at the silicon block and viscosity were observed to specify the wire sawing process. Not only does the abrasive shape and size plays an important role in the wire sawing process but also the properties of the carrier fluid of the slurry. With a drop in viscosity the TTV decreases and the sawing efficiency increases, but also the vertical force increases.
Pachycephala gutturalis subsp. violetae Mathews
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
Pachycephalidae
Pachycephala

description: Pachycephala gutturalis violetae Mathews Pachycephala gutturalis violetae Mathews, 1912c: 76 (West Northern Territory). Now Pachycephala melanura robusta Masters, 1876. See Galbraith, 1956: 199, Schodde and Mason, 1999: 445–446, Boles, 2007: 427, and Jønsson et al., 2008. HOLOTYPE: AMNH 657875, adult male, collected on the Daly River, 13.38S, 132.37E (Times Atlas), Northern Territory, Australia, 10 September 1894, by Knut Dahl (no. 757). From the Mathews Collection (no. 11020) via the Rothschild Collection. COMMENTS: Mathews cited his catalog number of the holotype in the original description. Only one AMNH specimen of violetae is a paratype: AMNH 657876 (Mathews no. 11019), female, collected on the Daly River on 1 September 1894 by Dahl. Both Galbraith (1956: 199) and Mayr (1967: 24) recognized violetae. See Schodde and Mason (1999: 445–446) for a discussion of species and subspecies limits.
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 26
description: {"references": ["Mathews, G. M. 1912 c. Additions and corrections to my reference list to the birds of Australia. Austral Avian Record 1: 73 - 80.", "Galbraith, I. C. J. 1956. Variation, relationships and evolution in the Pachycephala pectoralis superspecies (Aves, Muscicapidae). Bulletin of the British Museum (Natural History) Zoology 4: 133 - 222, map.", "Schodde, R., and I. J. Mason. 1999. The directory of Australian birds. Passerines. Collingwood, Victoria: CSIRO Publishing, 851 pp.", "Boles, W. E. 2007. Family Pachycephalidae. In: J. del Hoyo, A. Elliott, and D. A. Christie (editors), Handbook of birds of the world, volume 12: 374 - 437. Barcelona: Lynx Edicions, 816 pp., 56 pls, 436 photographs.", "Jonsson, K. A., R. C. K. Bowie, R. G. Moyle, L. Christidis, C. E. Filardi, J. A. Norman, and J. Fjeldsa. 2008. Molecular phylogenetics and diversification within one of the most geographically variable bird species complexes Pachycephala pectoralis / melanura. Journal of Avian Anatomy 39: 473 - 478.", "Mayr, E. 1967. Family Muscicapidae, Subfamily Pachycephalinae and Genus Incertae sedis. In R. A. Paynter, Jr. (editor), Check-list of birds of the world, volume 12: 1 - 52. Cambridge, MA: Museum of Comparative Zoology, 495 pp."]}
Solar Cells Above the Arctic Circle - a Comparison between a Two-Axis Tracking System and Simulations
Creators: name: Kleven, Ø
name: Persson, H.
name: Good, C.
name: Sulkowski, W.
name: Boström, T.
Publisher: name: WIP-Munich
Year: 2009
Subjects: PV Systems
PV Power Plants

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 4090-4093
description: A two-axis solar tracking system with eight PV modules has been installed at Narvik University
College in Norway. Narvik is situated at 68º 26’ N, north of the Arctic Circle. There are special challenges with
shading from surrounding mountains, cold climate, yearly variations in solar irradiation etc. It is however at high
latitudes the largest gain from a two-axis solar tracking system compared to fixed modules is to be found. The aim of
the project is to use the setup as an outdoor PV lab for measurements of PV module performance under real
conditions and to investigate the potential of two-axis solar tracking at high latitudes. The PV module energy output
has been monitored together with weather parameters and these results have been compared to simulations. In
addition the annual performance of the modules has been simulated with different weather models and simulation
tools. The conclusion is that the two-axis tracking system increases the potential energy output from the modules
significantly, especially during the summer months. An increase of 40-45% has been seen, depending upon weather
models and tracking system parameters. The simulations are made complicated by the fact that the local weather
conditions can vary much and the meteorological stations used for the irradiation weather models are situated far
away. This also shows the importance of collecting our own weather data for use in simulations in the future.
Hypergeometric Differential Equation and New Identities for the Coefficients of Nørlund and Bühring
Creators: name: Karp, Dmitrii
name: Prilepkina, Elena
Publisher: name: arXiv
Year: 2016
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 33C20, 33C60, 34M35

description: The fundamental set of solutions of the generalized hypergeometric differential equation in the neighborhood of unity has been built by Nørlund in 1955. The behavior of the generalized hypergeometric function in the neighborhood of unity has been described in the beginning of 1990s by Bühring, Srivastava and Saigo. In the first part of this paper we review their results rewriting them in terms of Meijer's $G$-function and explaining the interconnections between them. In the second part we present new formulas and identities for the coefficients that appear in the expansions of Meijer's $G$-function and generalized hypergeometric function around unity. Particular cases of these identities include known and new relations for Thomae's hypergeometric function and forgotten Hermite's identity for the sine function.
Pachycephala robusta subsp. intercedens Mathews
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
Pachycephalidae
Pachycephala

description: Pachycephala robusta intercedens Mathews Pachycephala robusta intercedens Mathews, 1920: 227 (Normanton, Queensland). Now Pachycephala melanura robusta Masters, 1876. See Schodde and Mason, 1999: 445–446, and Boles, 2007: 427. SYNTYPES: AMNH 657896 (Kemp no. 4194), adult male, 21 March 1914; AMNH 657897 (4003), adult male, 18 February 1914; AMNH 657898 (4252), adult male, 1 April 1914; AMNH 657899 (4356), adult male, 15 April 1914; AMNH 657900 (3579), male immature, 5 December 1913; AMNH 657901 (4254), male immature, 1 April 1914; AMNH 657902 (4208), female, 24 March 1914; AMNH 657903 (4190), female?, 21 March 1914; AMNH 657904 (4357), female, 16 April 1914, all collected at Normanton, 17.40S, 141.05E (Times Atlas), Queensland, Australia, by Robin Kemp. COMMENTS: Mathews did not indicate a type; therefore, all of the specimens collected by Kemp at Normanton must be considered syntypes. AMNH 657901, immature male, was described in Mathews (1920: 225–226) but was not figured, and no statement was made as to its type status; its label is marked ‘‘described.’’ Mayr (1967: 24) listed intercedens as a synonym of P. pectoralis violetae; see Schodde and Mason (1999: 445–446) for a discussion of species and subspecies limits.
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 27
description: {"references": ["Mathews, G. M. 1920. The birds of Australia. Vol. 8 (1 - 5): 1 - 316, pls. 371 - 399, suppl. 1 (1). London: H. F. and G. Witherby.", "Schodde, R., and I. J. Mason. 1999. The directory of Australian birds. Passerines. Collingwood, Victoria: CSIRO Publishing, 851 pp.", "Boles, W. E. 2007. Family Pachycephalidae. In: J. del Hoyo, A. Elliott, and D. A. Christie (editors), Handbook of birds of the world, volume 12: 374 - 437. Barcelona: Lynx Edicions, 816 pp., 56 pls, 436 photographs.", "Mayr, E. 1967. Family Muscicapidae, Subfamily Pachycephalinae and Genus Incertae sedis. In R. A. Paynter, Jr. (editor), Check-list of birds of the world, volume 12: 1 - 52. Cambridge, MA: Museum of Comparative Zoology, 495 pp."]}
Impact of Integrating PV Distributed Generations on Symmetrical Fault Quantities at the Host Distribution Grid
Creators: name: Hamzeh, A.
Publisher: name: WIP-Munich
Year: 2009
Subjects: PV Systems
PV Power Plants

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 4103-4107
description: The size of generating plants has been increasing during the last century and in the present. A parallel trend
however is now developing, in which significantly smaller sized generation units are being connected at the distribution
level. This technology is called Distributed Generation (DG), which includes grid-connected PV plants. The increasingly
expansion of integrating PV in electric distribution systems (DSs) has changed the DS from the originally passive DS to a
new active DS. The embedded PV generators have created several technical impacts on the host DS concerning voltage
profile & power losses, fault levels, protection, stability and power quality. These impacts are not generic to any network, and
consequently they could be positive, negative or neutral influences, depending on the DS configuration, operation mode, load
profile.. This paper addresses the impact of integrating grid-connected PV sources into the distribution network in case of
faults occurring in the system. The impact will be estimated for DG sources in a test distribution network (DN) that is similar
to the most Syrian DNs, using the German distinguished program Power Factory DigSilent. The paper addresses the
influence on fault levels, voltage profile and other fault quantities. It also provide an overview about the fault level managing
practices.
Towards tensor-based methods for the numerical approximation of the Perron-Frobenius and Koopman operator
Creators: name: Klus, Stefan
name: Schütte, Christof
Publisher: name: arXiv
Year: 2015
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: The global behavior of dynamical systems can be studied by analyzing the eigenvalues and corresponding eigenfunctions of linear operators associated with the system. Two important operators which are frequently used to gain insight into the system's behavior are the Perron-Frobenius operator and the Koopman operator. Due to the curse of dimensionality, computing the eigenfunctions of high-dimensional systems is in general infeasible. We will propose a tensor-based reformulation of two numerical methods for computing finite-dimensional approximations of the aforementioned infinite-dimensional operators, namely Ulam's method and Extended Dynamic Mode Decomposition (EDMD). The aim of the tensor formulation is to approximate the eigenfunctions by low-rank tensors, potentially resulting in a significant reduction of the time and memory required to solve the resulting eigenvalue problems, provided that such a low-rank tensor decomposition exists. Typically, not all variables of a high-dimensional dynamical system contribute equally to the system's behavior, often the dynamics can be decomposed into slow and fast processes, which is also reflected in the eigenfunctions. Thus, the weak coupling between different variables might be approximated by low-rank tensor cores. We will illustrate the efficiency of the tensor-based formulation of Ulam's method and EDMD using simple stochastic differential equations.
Strengthening the Network Integration of PV Systems - SUNRISE Project
Creators: name: Caneva, S.
name: Weiss, I.
name: Helm, P.
name: Duvauchelle, C.
name: Soler, R.
name: Fraile Montoro, D.
name: Despotou, E.
name: Schellekens, E.
Publisher: name: WIP-Munich
Year: 2009
Subjects: PV Systems
PV Power Plants

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 4108-4111
description: In the framework of the SUNRISE project a study work on the peak power supply by solar electricity was
carried out to investigate the impact of the integration of the PV systems into the electrical grid. The results of the study
work leads to assume that PV network integration could reduce the peak power demand and the network losses.
This paper shows how the PV network integration could reduce the peak power demand and how 240 GWh of electricity
could be saved thanks to the integration of 4 GWp of PV residential applications into the French grid.
Deriving the properties of coronal pressure fronts in 3-D: application to the 17 May 2012 ground level enhancement
Creators: name: Rouillard, Alexis P.
name: Plotnikov, Illya
name: Pinto, Rui F.
name: Tirole, Margot
name: Lavarra, Michael
name: Zucca, Pietro
name: Vainio, Rami
name: Tylka, Allan J.
name: Vourlidas, Angelos
name: De Rosa, Marc
name: Linker, Jon
name: Warmuth, Alexander
name: Mann, Gottfried
name: Cohen, Christina M.
name: Mewaldt, Robert A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study the link between an expanding coronal shock and the energetic particles measured near Earth during the Ground Level Enhancement (GLE) of 17 May 2012. We developed a new technique based on multipoint imaging to triangulate the 3-D expansion of the shock forming in the corona. It uses images from three vantage points by mapping the outermost extent of the coronal region perturbed by the pressure front. We derive for the first time the 3-D velocity vector and the distribution of Mach numbers, $M_{FM}$, of the entire front as a function of time. Our approach uses magnetic field reconstructions of the coronal field, full magneto-hydrodynamic simulations and imaging inversion techniques. We find that the highest $M_{FM}$ values appear near the coronal neutral line within a few minutes of the Coronal Mass Ejection (CME) onset; this neutral line is usually associated with the source of the heliospheric current and plasma sheet. We illustrate the variability of the shock speed, shock geometry and Mach number along different modeled magnetic field lines. Despite the level of uncertainty in deriving the shock Mach numbers, all employed reconstruction techniques show that the release time of GeV particles occurs when the coronal shock becomes super-critical ($M_{FM}>3$). Combining in-situ measurements with heliospheric imagery, we also demonstrate that magnetic connectivity between the accelerator (the coronal shock of 17 May 2012) and the near-Earth environment is established via a magnetic cloud that erupted from the same active region roughly five days earlier.
description: 28 pages, 16 figures, published in ApJ
Recycling of Silicon, Environmental Footprints and Economics
Creators: name: Müller, A.
name: Schlenker, S.
name: Wambach, K.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Feedstock, Crystallisation and Wafering

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1066-1070
description: For economical and environmental reasons reuse of solar silicon by-products like cut-offs of crystals, ingots or bricks, broken wafers and process failures became an important material source. In this paper several reclaim processes for the treatment of by-products along the whole photovoltaic value chain are presented. The methods range from mechanical treatments (cutting, breaking, crunching) to chemical processes (etching). The recycling processes of different products are evaluated concerning economical and ecological aspects. The economic factors related to recycling of off-grade material will be correlated with the ecological impact of the processes and the final product quality. It could be shown that economically viable processes generally are also environmentally favorable and conserve resources.
Single-Wafer Tracking in PV Production Lines
Creators: name: Rein, S.
name: Krieg, A.
name: Weil, A.
name: Emanuel, G.
name: Glatthaar, M.
name: Grohe, A.
name: Preu, R.
name: Sattler, B.
name: Lorch, P.
name: Vayhinger, K.U.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Handling Issues and Manufacturing Automation

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1125-1130
description: Single-wafer tracking gains importance in PV production due to the increasing number of research lines and due to the expected deeper insight into the technological processes. Since pure logistic tracking is not robust enough for industrial application, a procedure for wafer identification is developed based on a standard bar code which is laser-scribed into the surface of the wafer within the active area of the solar cell and read-out with a
specially developed vision system. The laser marking is shown to be robust enough to endure the various manufacturing steps and not to affect cell performance. The quality of different codes and the robustness of code detection by automatic vision inspection are investigated for the whole variety of different surfaces in solar cell manufacturing. Although the bar codes are hidden under diffuse illumination, they are clearly visible under direct illumination and can be decoded by a special image processing procedure. For cell processes with surface texturing on mono- and multi-crystalline silicon average detection rates of 97% and 94% are already achieved over the whole process sequence. As there is potential for improvement, the present work provides the basis for a robust tracking system in the near future.
Studies on Concentrator Multi-Junction Solar Cells and Materials in the Japanese Innovative PV R&D Program
Creators: name: Yamaguchi, M.
name: Ohshita, Y.
name: Kojima, N.
name: Suzuki, H.
name: Bouzaz, B.
name: Takamoto, T.
name: Okada, Y.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Advanced Photovoltaics
New Materials, Cells and Modules

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 218-221
description: Target of the Japanese Innovative Photovoltaics R&D Program started from fiscal year 2008 is to develop
high efficiency solar cells with conversion efficiency of more than 40% and low electricity cost of less than 7 JPY/kWh
until 2050. In this program, the concentrator III-V compound multi-junction (MJ) tandem solar cell is the most important
research theme for high efficiencies of over 50% and low cost of less than 30JPY/W. InGaAsN material is good
candidate for 4-6 junction solar cells. In our preliminary stage of our project, 2% efficiency has been obtained with
GaAsN single-junction solar cells. In order to increase efficiency of single and 4-junction solar cells, it is very important
to understand and control nitrogen incorporation, and to understand and reduce defects in the grown films. In this paper,
outline of the Japanese Innovative Photovoltaics R&D Program is presented, and epitaxial grown of GaAsN films by
using CBE (Chemical Beam Epitaxy) and characterization of the films by Hall effect and DLTS (Deep Level Transient
Spectroscopy) measurements are also reported.