cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Endless Fun in high dimensions - a card game to program a high-dimensional quantum computer
Creators: name: Kopf, Lea
name: Hiekkamäki, Markus
name: Prabhakar, Shashi
name: Fickler, Robert
Publisher: name: Zenodo
Year: 2022
Subjects: quantum computing, card game, high-dimensional quantum information, qubit, qudit,

description: Idea of the card game Build your own high-dimensional quantum computer. By applying quantum logic operations to high-dimensional quantum bits – so-called qudits -, you can change their values. Try to reach the highest possible value on your qudit, while keeping the other player’s qudit as low as possible. The game offers three modes of playing - easy, 2D, and 3D - with increasing complexity. The evaluation software calculates the state whenever a played card is entered. It then calculates the final state after each round, in which a certain number of measurements will project possible complex superposition states into a final value. The player with the highest qudit values in three rounds wins the game. See instructions for a detailed description of the game. Please also have a look at the manuscript detailing the ideas behind the game and how quantum effects such as superposition, interference, and entanglement can be observed when playing. The prerpint version of the manuscript can be found here: https://arxiv.org/abs/2107.12007 The upload contains: instructions pdf-file to print the cards program to evaluate the outcome of the game (python code as well as executable application) NOTE: There is a newer version (v3) of the game available, with an updated evaluation software, additional riddle cards for single players and a slightly adjusted design of the game cards. NOTE: The general idea is strongly based on the great card game Q|Cards> by Oskari Kerppo, Jorden Senior, Sabrina Maniscallo, Guillermo Garcia-Perez, Samuli Jääskeläinen, Sylvia Smatanova, Krista Erkkilä, Elie Abraham, which is a very similar game using only qubits. It can be found here: https://zhamul.itch.io/qcards
title: 'It's Aboot Justice and Journey': Community Development Practitioners' Perspectives Reveal Insights on Practice in Scotland
titleType: Other
Creators: name: McEwan-Short, Jean
Publisher: name: University of Dundee
Year: 2021

description: Community development is commonly described as contested practice, it is defined in many nuanced ways and there are challenges across the literature encouraging practitioners to engage more fully with critical thinking and transformative intent. The aim of this inquiry was to investigate community development practitioners’ perspectives on their practice in Scotland. Using an interpretivist framework, the research was designed to foreground the participants’ voices as experts on their own practice. Dyadic dialogical interviews were developed and used as community development inspired research methods and the participants’ perspectives are presented as dialogues interspersed with my analysis. The dialogues present community development practitioners who are highly reflective critical thinkers, articulate about the conceptual underpinnings of their approaches and fully aware of the socio-political contexts they are operating in. A complex picture is revealed of community development as clear, courageous, caring, critical, politically motivated practice that is grounded in ideological thinking, respect for people’s agency, and in mutual striving for transformative social change. The participants demonstrated a healthy awareness of limitations to practice and of the weight they carry in their engagement with the somewhat grand expectations of community development. Nonetheless the predominant thread throughout is of hopeful practice driven by an enduring commitment to tackling social inequalities and to striving to make society a better place combined with a profound belief this is possible. There is a sense of community development being portrayed as fragile practice in a context dominated by service provision and the conclusion is that it needs cared for as dynamic practice that has an important role to play in striving for positive social change.
title: Aula de Desenho e Arquitetura da Universidade de Coimbra
Creators: name: de Almeida Barata, João
Publisher: name: CHAM, Faculdade de Ciências Sociais e Humanas, Universidade Nova de Lisboa
Year: 2022

description: Entrada histórica sobre a instituição Aula de Desenho e Arquitetura da Universidade de Coimbra, Coimbra, Portugal, na plataforma eViterbo
description: Almeida Barata, João de. 2022. Aula de Desenho e Arquitetura da Universidade de Coimbra in eViterbo. CHAM, Faculdade de Ciências Sociais e Humanas, Universidade Nova de Lisboa. eISBN: 978-989-8492-77-7
Indirect signature of dark matter with the diphoton resonance at 750 GeV
Creators: name: Park, Jong-Chul
name: Park, Seong Chan
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Motivated by the recently reported diphoton resonance at 750 GeV, we study a new axion-like bosonic portal model of dark matter physics. When the resonance particle is identified as the pseudo-scalar mediator, via which the standard model sector would interact with the dark matter sector, the data from collider physics would provide profound implications to dark matter phenomenology. In this paper, we first identify the preferred parameter space of the suggested portal model from the results of the LHC run with $\sqrt{s}=13$ TeV, and then we examine the dark matter signature taking into account the data from cosmic-ray experiments including Fermi-LAT dwarf galaxy $γ$-ray search, HESS $γ$-line search, and future CTA diffuse $γ$-ray and $γ$-line searches.
description: 16 pages, 11 figures, additional anaysis of smaller DM mass, references added, matches published version
Heldendämmerung: Elektronisches Kammermusikkonzert mit Klaviertrio, Live-Elektronik, quadrophonischem Lautsprechersetup und zwei bis drei mobilen Lautsprechern
Creators: name: Akkermann, Miriam
name: Färber, Peter
name: Boller, Bettina
name: Gerster, Judith
name: Perifanova, Stefka
name: Tedde, Giorgio
name: Lee, Junghae
name: Seyedi, Elnaz
name: Tsiflidis, Helena
Publisher: name: Zenodo
Year: 2022
Subjects: Konzert
Kammermusik
Sound Mobile Sources
Mobile Lautsprecher
Klaviertrio
Space and Sound

description: Heldendämmerung: Das Trio, die Elektronik mit dem feststehenden quadrophonischen Beschallungssystem und die mobilen Lautsprecher bilden dabei drei ineinander verwobene Gegenpole: die traditionelle Instrumentalbesetzung aus der klassischen Musik und die avantgardistische Besetzung der elektronischen Musik. Unter dem Titel "Heldendämmerung" brechen sie gemeinsam das repräsentative klassische Instrumentarium in die Medienkunst auf.
description: + ID: 591210
Deposition of Zn(O,S) Buffer Layers by Reactive Sputtering – Impact of Substrate Temperature on Layer Composition and Solar Cell Performance
Creators: name: Grimm, A.
name: Klenk, R.
name: Lehmann, S.
name: Neisser, A.
name: Lauermann, I.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Thin Films Solar Cells
CIS and Other (II-VI) Ternary Thin Film Solar Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 2905-2907
description: Zn(S,O) was deposited by reactive sputtering from a ZnS cathode in an Ar/O2 mixture on CuInS2 thin
film absorbers to replace CdS as buffer material in chalcopyrite thin film solar cells. We examined the dependence of
material properties and the performance of resulting devices on the substrate temperature during deposition of the
buffer layers. Furthermore we explored the benefits of a thin ZnS layer placed between the chalcopyrite absorber and
the Zn(S,O) buffer. A clear dependence of the S/O-ratio and the resulting band gap on the substrate temperature was
observed. The efficiency of the resulting devices increased with substrate temperature and reached a maximum value
of 7.4 % without, and 8% with the ZnS interlayer, when deposited at a substrate temperature of 200°C. Reference
cells made from the same absorber batch with the established double-layer of wet-chemically deposited CdS and
sputtered i-ZnO reached 8.6% efficiency.
Design of nonlinear optical response of multipole-type excitons by film thickness and incident pulse width
Creators: name: Kinoshita, Takashi
name: Ishihara, Hajime
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We theoretically investigate the nonlinear optical pulse responses of excitons in a thin film where the excitonic center-of-mass motion is confined. A large interaction volume between excitons and radiation yields particular coupled states with radiative decay times reaching several femto-seconds. By considering two polarization directions of light, we reveal that these fast-decay modes dominantly survive in an optical Kerr spectra even under a massive nonradiative damping $Γ=30$ meV. The results clearly show that there is an optimal combination of the incident pulse width and the film thickness for maximizing the integrated intensity of nonlinear signals.
description: 6 pages, 4 figures
Level of selenoprotein transcripts in peripheral leukocytes of patients with bladder cancer and healthy individuals
Creators: name: Reszka, Edyta
name: Gromadzinska, Jolanta
name: Jablonska, Ewa
name: Wasowicz, Wojciech
name: Jablonowski, Zbigniew
name: Sosnowski, Marek
Publisher: name: Kooperation de Gruyter
Year: 2009

description: Background: Low concentrations of selenium (Se) in humans have been associated with risk of cancer. Selenoprotein mRNAs can potentially be regulated by Se status. Methods: Se status, GPx1 Pro198Leu and Sep15 1125G/A genetic polymorphism and human (h)GPx1, hGPx3, hSep15 and hSeP1 transcript levels in peripheral leukocytes of 33 males with bladder cancer and 47 healthy male controls were analysed. Results: All the subjects expressed detectable selenoprotein mRNA concentrations in leukocytes. Significantly lower expression of hGPx1, hGPx3, hSep15 and hSeP1 in leukocytes of bladder cancer patients compared to controls was observed. hGPx1, hGPx3 and hSep15 expression was significantly lower in non-smokers in the control group compared with smokers in the control group. A positive relationship between expression of all studied genes was also observed in non-smoking controls. Expression of hGPx3 and hSep15 gradually increased with tumour grade in patients with cancer. We did not find any association between selenoprotein mRNA levels, Se status and selenoprotein genetic polymorphism. Conclusions: This study showed significant down-regulation of hGPx1, hGPx3, hSep15 and hSeP1 mRNA levels in leukocytes of patients with bladder cancer compared to controls. Selenoprotein transcript levels in circulating leukocytes of patients with bladder cancer and controls revealed no potential impact of Se status on selenoprotein expression. Clin Chem Lab Med 2009;47:1125–32.
Application to Different Thin Film Solar Cell Technologies of Explicit Analytic Solutions for their Parameters Extraction from Current Versus Voltage Characteristics at Different Temperature
Creators: name: Darga, A.
name: Denis, J-C.
name: Lmai, F.
name: Connolly, J.P.
name: Mencaraglia, D.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Thin Films Solar Cells
CIS and Other (II-VI) Ternary Thin Film Solar Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 3045-3049
description: In this work, we have compared three different methods for thin film solar cell electronic transport
parameters extraction from dark current versus voltage at different temperatures (I (V,T) ) measurements. These
parameters correspond to the classical dc single diode model with series and shunt resistances. We have implemented
with Matlab two different methods recently proposed in the literature. The first method, which is exact, is based on
the use of the Lambert function to solve analytically the non-explicit equation describing the electrical equivalent
circuit. The second method, which is an approximate one, consists in separating the I-V characteristics into two parts,
a linear and an exponential one to derive the parameters which are the most significant for each zone. A third method
has also been used with a variational least squares minimisation over all data points. These methods have been
applied to two different thin film solar cell technologies, amorphous silicon base p-i-n cell and CIGSe/CdS (or ZnS)
hetero-junctions. We have analyzed the temperature evolution of the 4 extracted parameters of amorphous silicon
base p-i-n cell and CIGSe/CdS (or ZnS) hetero-junctions solar cells under dark conditions (series and parallel
resistance, saturation current density and ideality factor of the diode). This gives us insight on the electronic transport
in the solar cell. We discuss the validity range of a single diode model and we establish the complementarity of these
methods over a range of temperatures.
Towards an Industrial Laser Doping Process for the Selective Emitter Using Phosphoric Acid as Dopant
Creators: name: Eberstein, M.
name: Geier, M.
name: Grießmann, H.
name: Partsch, U.
name: Voelkel, L.
name: Böhme, R.
name: Pentzien, S.
name: Koter, R.
name: Mann, G.
name: Bonse, J.
name: Krüger, J.
Publisher: name: WIP
Year: 2011
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Improvements

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 1220-1223
description: Different laser supported approaches have already been realized, proving the great potential of laserdoped
selective emitters (LDSE). However, it is challenging to establish a low-cost process by using pulsed laser
tools. So far a single-step process only leads to satisfying results utilizing cw-lasers. In this paper we have examined a
two-step process to produce laser-doped selective emitters on multicrystalline textured standard silicon photovoltaic
wafers (90-Ω/sq-Emitter, SiN-antireflection coating (ARC)). The precise ARC removal by near-infrared fs-laser
pulses (30 fs, 800 nm), and the doping of uncoated silicon wafers by ns-laser pulses (8 ns, 532 nm) were
systematically investigated. In the fs-experiment, optimum conditions for ARC removal were identified. In the nsexperiments
under suitable conditions (melting regime), the phosphorous concentration underneath the wafer surface
was significantly increased and the sheet resistance was reduced by nearly a factor of two. Moreover, electrical
measurements on fired metallization fingers deposited on the laser processed wafers showed low contact resistances.
Hence, wafer conditioning with combined fs-laser- and ns-laser-processes are expected to be a promising technology
for producing selective emitters.
The scaling of the minimum sum of edge lengths in uniformly random trees
Creators: name: Esteban, Juan Luis
name: Ferrer-i-Cancho, Ramon
name: Gómez-Rodríguez, Carlos
Publisher: name: arXiv
Year: 2016
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Discrete Mathematics (cs.DM)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The minimum linear arrangement problem on a network consists of finding the minimum sum of edge lengths that can be achieved when the vertices are arranged linearly. Although there are algorithms to solve this problem on trees in polynomial time, they have remained theoretical and have not been implemented in practical contexts to our knowledge. Here we use one of those algorithms to investigate the growth of this sum as a function of the size of the tree in uniformly random trees. We show that this sum is bounded above by its value in a star tree. We also show that the mean edge length grows logarithmically in optimal linear arrangements, in stark contrast to the linear growth that is expected on optimal arrangements of star trees or on random linear arrangements.
description: connections with theoretical physics have been expanded; in press in Journal of Statistical Mechanics (JSTAT)
I/V Measurement of High Capacitance Cells with Various Methods
Creators: name: Beljean, P.-R.
name: Lo, A.
name: Despeisse, M.
name: Riesen, Y.
name: Pelet, Y.
name: Fakhfouri, V.
name: Wyrsch, N.
name: Ballif, C.
Publisher: name: WIP
Year: 2011
Subjects: Components for PV Systems
PV Modules

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 3275-3278
description: Most of state-of-the-art equipment for I/V characterization and power rating of PV modules implement xenon
flashers as the light generating part. These solar simulators are characterized by high-intensity and short duration single or
multi-pulses. For more than 30 years this was found very suitable, allowing for a high accuracy in PV modules power rating.
However, with the increase of crystalline silicon solar cells efficiency and the strong development of technologies such as
hetero-junction solar cells, the pulse duration and consequently the I-V sweeping time become a limitation. This paper
presents a review of the impact of the I-V sweeping time duration on the measurement of hetero-junction, monocrystalline
and thin film silicon solar modules, and explores some ways to overcome this problem.
Lifshitz transitions, type-II Dirac and Weyl fermions, event horizon and all that
Creators: name: Zhang, Kuang
name: Volovik, G. E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The type-II Weyl and type-II Dirac points emerge in semimetals and also in relativistic systems. In particular, the type-II Weyl fermions may emerge behind the event horizon of black holes. In this case the horizon with Painleve-Gullstrand metric serves as the surface of the Lifshitz transition. This relativistic analogy allows us to simulate the black hole horizon and Hawking radiation using the fermionic superfluid with supercritical velocity, and the Dirac and Weyl semimetals with the interface separating the type-I and type-II states. The difference between such type of the artificial event horizon and that which arises in acoustic metric is discussed. At the Lifshitz transition between type-I and type-II fermions the Dirac lines may also emerge, which are supported by the combined action of topology and symmetry. The type-II Weyl and Dirac points also emerge as the intermediate states of the topological Lifshitz transitions. Different configurations of the Fermi surfaces, involved in such Lifshitz transition, are discussed. In one case the type-II Weyl point connects the Fermi pockets, and the Lifshitz transition corresponds to the transfer of the Berry flux between the Fermi pockets. In the other case the type-II Weyl point connects the outer and inner Fermi surfaces. At the Lifshitz transition the Weyl point is released from both Fermi surfaces. These examples reveal the complexity and universality of topological Lifshitz transitions, which originate from the ubiquitous interplay of a variety of topological characters of the momentum-space manifolds. For the interacting electrons, the Lifshitz transitions may lead to the formation of the dispersionless (flat) band with zero energy and singular density of states, which opens the route to room-temperature superconductivity.
description: 18 pages, 8 figures, title changed, prepared for proceeding of ECT workshop "Superfluidity and pairing phenomena"
The Effect of Wet Treatment before Amorphous Silicon Deposition in Silicon Heterojunction Solar Cells
Creators: name: Kim, S.-K.
name: Choi, J.-H.
name: Park, J.-W.
name: Cho, E.-C.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 2442-2444
description: Defect passivation at the interface of amorphous Si (a-Si) and Si wafers is crucial to obtain high
efficiency in Si based heterojunction solar cells. In this study, short acid treatment (round treatment) and hot deionized
(DI) water treatment were carried out in order to reduce defect density at the interface of a-Si layers and Si
wafers. Round treatment was found to increase minority carrier lifetime, which was mainly attributed to suppression
of epitaxial growth in a-Si layer. However, no improvement was observed in case of hot DI water treatment. Using 5
inch square wafers, we could obtain max 17.2% conversion efficiency.
Urbane Villen in Wollishofen - Wollishofer Blog
Creators: name: Brändli, Sebastian
Publisher: name: Zentralbibliothek Zürich
Year: 2021
Subjects: subject: 690 Hausbau, Bauhandwerk
subject: 949 Geschichte anderer Teile Europas
subject: Zürich-Wollishofen
subject: Villa
subject: Gut
subject: Städtebau

description: Ein Blog zu Geschichte und Quartierleben des Zürcher Stadtquartiers Wollishofen auf wollipedia.ch. Mit Texten von Sebastian Brändli (SB) und Ansichtskarten aus der Sammlung von Markus Zimmermann (MZ).
Investigations of Laser and Design Parameters of Via Holes on Mechanical Strength of Metal Wrap through Solar Cells
Creators: name: Schoenfelder, S.
name: Oswald, M.
name: Fischer, C.
name: Zuehlke, H.-U.
name: Berbig, C.
name: Geppert, T.
name: Wütherich, T.
name: Krokoszinski, H.-J.
name: Bagdahn, J.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 2578-2583
description: In photovoltaic industry cell concepts with rear side contacts, such as the metal wrap through solar cell
design, have been developed to decrease the module manufacturing costs. In the metal wrap through solar cells, holes
are introduced at the beginning of cell manufacturing. These holes could influence the strength and the breakage rate
of wafers and cells. In this work, full size monocrystalline silicon wafers with different number and orientation of
holes were investigated in 4-point bending tests regarding the strength behavior. Furthermore, small monocrystalline
silicon samples with one central hole, drilled with different laser parameters, were analyzed in ring-on-ring tests. As
a result, there is only small influence of holes on the strength on wafer level. Though, the investigation of small chips
showed that different laser parameters can change the strength of the material in the region of the holes.
Investigation of Precursor Layer for Laser Doping Technique in Crystalline Silicon Solar Cell Process
Creators: name: Katagiri, T.
name: Funatani, T.
name: Hirata, K.
name: Nishimura, H.
name: Fuyuki, T.
Publisher: name: WIP
Year: 2011
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Improvements

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 1270-1273
description: More optimization of cell fabrication processing by laser doping (LD) technique is indispensable. LD
to be optimized for high efficiency silicon solar cell would be depended strongly on the optical properties of
phosphosilicate glass (PSG) film. In this study, to clarify the optical properties of PSG film, the reflectances of
differential PSG thickness were investigated by calculated and experimental results at two type laser; Nd3+:YAG
pulsed-laser with 355 nm wavelength and Nd: YVO4 CW laser with 532 nm wavelength. In addition, we investigated
the irradiated surface conditions after two type laser and influence of doping profiles on different PSG films. Our
results demonstrated that the reflectance of PSG precursor layer influenced to conversion efficiency of solar cells
using LD technique.
Kino Morgental - Wollishofer Blog
Creators: name: Brändli, Sebastian
Publisher: name: Zentralbibliothek Zürich
Year: 2021
Subjects: subject: 710 Städtebau, Raumplanung, Landschaftsgestaltung
subject: 949 Geschichte anderer Teile Europas
subject: Zürich-Wollishofen
subject: Kino
subject: Städtebau

description: Ein Blog zu Geschichte und Quartierleben des Zürcher Stadtquartiers Wollishofen auf wollipedia.ch. Mit Texten von Sebastian Brändli (SB) und Ansichtskarten aus der Sammlung von Markus Zimmermann (MZ).
Ärzte in Wollishofen - Wollishofer Blog
Creators: name: Brändli, Sebastian
Publisher: name: Zentralbibliothek Zürich
Year: 2021
Subjects: subject: 610 Medizin und Gesundheit
subject: 949 Geschichte anderer Teile Europas
subject: Zürich-Wollishofen
subject: Gesundheitspolitik
subject: Arzt
subject: Medizingeschichte

description: Ein Blog zu Geschichte und Quartierleben des Zürcher Stadtquartiers Wollishofen auf wollipedia.ch. Mit Texten von Sebastian Brändli (SB) und Ansichtskarten aus der Sammlung von Markus Zimmermann (MZ).
Iterating free-field AdS/CFT: higher spin partition function relations
Creators: name: Beccaria, M.
name: Tseytlin, A. A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We find a simple relation between a free higher spin field partition function on thermal quotient of AdS(d+1) and the partition function of the associated d-dimensional conformal higher spin field on thermal quotient of AdS(d). Starting with a conformal higher spin field defined on AdS(d) one may also associate to it another conformal field in d-1 dimensions, thus "iterating" AdS/CFT. We observe that in the case of d=4 this iteration leads to a "trivial" 3d higher spin conformal theory with parity-even non-local action: it describes zero total number of dynamical degrees of freedom and the corresponding partition function on thermal AdS(3) is equal to 1.
description: 27 pages, v2: minor typos corrected
Am Bach - Wollishofer Blog
Creators: name: Brändli, Sebastian
Publisher: name: Zentralbibliothek Zürich
Year: 2022
Subjects: subject: 600 Technik, Technologie
subject: 949 Geschichte anderer Teile Europas
subject: Zürich-Wollishofen
subject: Weiler
subject: Siedlung
subject: Stadtentwicklung

description: Ein Blog zu Geschichte und Quartierleben des Zürcher Stadtquartiers Wollishofen auf wollipedia.ch. Mit Texten von Sebastian Brändli (SB) und Ansichtskarten aus der Sammlung von Markus Zimmermann (MZ).
Comparison of Two Laser Processes for Selective Emitter on Silicon Solar Cells
Creators: name: Poulain, G.
name: Focsa, A.
name: Blanc-Pélissier, D.
name: Bazer-Bachi, B.
name: Gauthier, M.
name: Semmache, B.
name: Le Quang, N.
name: Pellegrin, Y.
name: Lemiti, M.
Publisher: name: WIP
Year: 2011
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Improvements

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 1285-1288
description: Selective emitter solar cells can provide a significant increase in conversion efficiency. However most
approaches still needs many technological steps and alignment procedures. This paper reports on the comparison of
two laser processes for selective emitter. In both cases, the phosphorous glass (PSG) present after the thermal Pdiffusion
acts as a dopant source for the laser process. In the first process, the laser-assisted diffusion takes place
directly after the thermal diffusion. In the second process, the PSG layer is preserved and covered by silicon nitride.
The laser is used to open locally the antireflection and passivation coating, and at the same time, achieve local
phosphorus diffusion. This second process is potentially self-aligned if electrochemical front side metallization are
used. Numerical simulation of the laser-matter interaction for the two structures is discussed. Preliminary solar cells
results for both processes are compared. In particular, illuminated I-V measurements and spectral response
measurements are discussed.
Rote Fabrik - Wollishofer Blog
Creators: name: Brändli, Sebastian
Publisher: name: Zentralbibliothek Zürich
Year: 2022
Subjects: subject: 700 Künste und Unterhaltung
subject: 949 Geschichte anderer Teile Europas
subject: Zürich-Wollishofen
subject: Rote Fabrik
subject: Ortsgeschichte

description: Ein Blog zu Geschichte und Quartierleben des Zürcher Stadtquartiers Wollishofen auf wollipedia.ch. Mit Texten von Sebastian Brändli (SB) und Ansichtskarten aus der Sammlung von Markus Zimmermann (MZ).
Exact BPS domain walls at finite gauge coupling
Creators: name: Blaschke, Filip
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Bogomol'nyi-Prasad-Sommerfield solitons in models with spontaneously broken gauge symmetry have been intensively studied at infinite gauge coupling limit, where the governing equation -- so-called master equation -- is exactly solvable. Except for a handful of special solutions, the standing impression is that analytic results at finite coupling are generally unavailable. The aim of this paper is to demonstrate, using domain walls in Abelian-Higgs models as the simplest example, that exact solitons at finite gauge coupling can be readily obtained if the number of Higgs fields ($N_F$) is large enough. In particular, we present a family of exact solutions, describing $N$ domain walls at arbitrary positions in models with at least $N_F \geq 2N+1$. We have also found that adding together any pair of solution can produce a new exact solution if the combined tension is below a certain limit.
description: 41 pages, 12 figures, typo and spelling corrections, accepted by PTEP
Characterization of the Locally Fluctuating Absorbance and Quasi-Fermi Level Splitting of Cu(In,Ga)S2 Thin Films by Spatially Resolved Photoluminescence Measurements
Creators: name: Heidemann, F.
name: Gütay, L.
name: Brüggemann, R.
name: Merdes, S.
name: Meeder, A.
name: Bauer, G.H.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Thin Films Solar Cells
CIS and Other (II-VI) Ternary Thin Film Solar Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 3016-3019
description: Chalcopyrite absorbers gain more and more importance in thin film photovoltaics. Besides
Cu(In,Ga)Se2, which reaches efficiencies of up to 19.9%, the sulphured counterpart CuInS2 or Cu(In,Ga)S2 is
presently being considered as an alternative providing a larger band gap and thus higher open circuit voltage.
Analogously with Cu(In,Ga)Se2, Cu(In,Ga)S2 shows a high degree of spatial inhomogeneities in structural, optical
and optoelectronic properties on the length scale of grain sizes and above which is caused by the grainy structure and
the inhomogeneous growth of absorber layers. To analyze these locally fluctuating magnitudes spectrally resolved
photoluminescence measurements with high lateral resolution (≤ 1 μm) in a confocal microscope set-up have been
performed. Based on these data sets and on Planck’s generalized law the determination of the spatial variation in the
splitting of the quasi-Fermi levels ((Efn-Efp)) and access to the local absorbance is possible. A comparison of these
properties, which are crucial for the solar light conversion efficiency of a final cell, is made for CuInS2 and
Cu(In,Ga)S2 absorber layers for data obtained from statistically representative scan areas. The results show that an
increase in the band gap and the mean (Efn-Efp) due to an incorporation of gallium does not come along with a
decrease in the variation of (Efn-Efp) over the absorber layer. A further analysis by a detailed cross-correlation
between the splitting of the quasi Fermi levels and the local absorbance of an absorber leads to the conclusion that the
local (Efn-Efp) is reduced by the excess-carrier recombination via deep defects.
Wollishofer Eingabe 1917 - Wollishofer Blog
Creators: name: Brändli, Sebastian
Publisher: name: Zentralbibliothek Zürich
Year: 2021
Subjects: subject: 350 Öffentliche Verwaltung, Militärwissenschaft
subject: 949 Geschichte anderer Teile Europas
subject: Zürich-Wollishofen
subject: Ortsgeschichte
subject: Städtebau
subject: Kommunalpolitik

description: Ein Blog zu Geschichte und Quartierleben des Zürcher Stadtquartiers Wollishofen auf wollipedia.ch. Mit Texten von Sebastian Brändli (SB) und Ansichtskarten aus der Sammlung von Markus Zimmermann (MZ).
Two Dimensional Mapping of Electrical Properties of PV Modules Using Electroluminescence
Creators: name: Li, B.
name: Stokes, A.
name: Doble, D.M.J.
Publisher: name: WIP
Year: 2011
Subjects: Components for PV Systems
PV Modules

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 3285-3289
description: Electroluminescence (EL) imaging has become an important quality control tool in maximizing module
manufacturing yields through the detection of cracks in crystalline silicon cells. The technique offers the potential for
collecting a 2D map of electrical properties of the cells since the intensity of individual pixels is related to the diode
properties, series resistance and shunt resistance. However, determining such parameters analysis is complicated by
the fact that pixel intensity is also affected by series resistance between the point and the metallization pattern. The
work reported herein concerns a bias-dependant EL imaging technique that enables 2D spatial mapping of the
electrical properties within cells and modules. Junction voltages and their difference among pixels have been derived
from EL images at different bias. A distributed electrical model was then applied to fit the junction voltage change at
each current and for each pixel, enabling acquisition of a 2D dark I-V curve for each point across the entire module.
Cell parameters such as series resistance, shunt resistance, ideality factor and reverse saturation current can be
extracted for each pixel. Following this, the light I-V equation was solved enabling the prediction of module
performance under sun illumination.
How to Represent PV Plants in Grid Integration Studies - A Generic Approach
Creators: name: Premm, D.
name: Fawzy, T.
name: Glitza, O.
name: Sakschewski, V.
name: Bettenwort, G.
name: Engel, B.
Publisher: name: WIP
Year: 2011
Subjects: PV Systems
Large PV Power Plants and Distributed PV: System Aspects and Grid Connection

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 3862-3868
description: Within the last few years a remarkable demand for models of photovoltaic energy generation systems has been
observed. These models are needed by users for a variety of purposes: grid operation, transmission and distribution
system studies, interconnection and stability studies, etc. They are also needed by inverter manufacturers for system
requirements engineering, system simulation, plant control development, inverter component and function
development, and even automated code generation. In this paper an overview of recent modelling activities is given
from the perspective of a solar inverter manufacturer with focus on RMS models which make use of a generic
modelling approach which covers a great variety of three-phase inverters and which can be deployed in various
network simulation environments. The benefit of reliable PV system modelling is highlighted in exemplary use cases
demonstrating the essential need for an overall system design concept.
Akromegalie
Creators: name: Plöckinger, Ursula
Publisher: name: Humboldt-Universität zu Berlin, Medizinische Fakultät - Universitätsklinikum Charité
Year: 2001
Subjects: subject: Akromegalie
subject: transspenoidale Hypophysenadenomektomie
subject: Somatostatin-Analoga
subject: Dopamin-Agonist
subject: Acromegaly
subject: transsphenoidale pituitary surgery
subject: somatostatin analogue
subject: dopamin agonist
subject: 610 Medizin
subject: 33 Medizin
subject: YC 3800

description: Die Akromegalie - Folge eines Wachstumshormon (STH) sezernierenden Hypophysentumors - ist eine seltene Erkrankung. Bei früher Diagnose ist die Akromegalie gut behandelbar. Unbehandelt - oder zu spät behandelt - führt sie zu hoher Co-Morbidität und verkürzt das Leben. Endokrinologische Therapieziele wurden kürzlich definiert: Heilung bei STH
description: Acromegaly, caused by a growth hormone (GH)-secreting pituitary adenoma, is a rare disease. If diagnosed early therapeutic results are good. However, untreated or treated belatedly, acromegaly is associated with a high co-morbidity and reduced life-expectancy. The therapeutic goals have recently been defined as follows: complete remission or cure as GH
The NuSTAR view of the non-thermal emission from PSR J0437-4715
Creators: name: Guillot, Sebastien
name: Kaspi, Victoria M.
name: Archibald, Robert F.
name: Bachetti, Matteo
name: Flynn, Chris
name: Jankowski, Fabian
name: Bailes, Matthew
name: Boggs, Steven
name: Christensen, Finn E.
name: Craig, William W.
name: Hailey, Charles A.
name: Harrison, Fiona A.
name: Stern, Daniel
name: Zhang, Willam W.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a hard X-ray NuSTAR observation of PSR J0437-4715, the nearest millisecond pulsar. The known pulsations at the apparent pulse period ~5.76 ms are detected at energies up to 20 keV. We measure a photon index $Γ= 1.65\pm0.24$ (90% confidence) for the power law fit to the non-thermal emission. It had been shown that spectral models with two or three thermal components fit the XMM-Newton spectrum of PSR J0437-4715, depending on the slope of the power-law component, and the amount of absorption of soft X-rays. The new constraint on the high-energy emission provided by NuSTAR removes ambiguities regarding the thermal components of the emission below 3 keV. We performed a simultaneous spectral analysis of the XMM-Newton and NuSTAR data to confirm that three thermal components and a power law are required to fit the 0.3-20 keV emission of PSR J0437-4715. Adding a ROSAT-PSPC spectrum further confirmed this result and allowed us to better constrain the temperatures of the three thermal components. A phase-resolved analysis of the NuSTAR data revealed no significant change in the photon index of the high-energy emission. This NuSTAR observation provides further impetus for future observations with the NICER mission (Neutron Star Interior Composition Explorer) whose sensitivity will provide much stricter constraints on the equation of state of nuclear matter by combining model fits to the pulsar's phase-folded lightcurve with the pulsar's well-defined mass and distance from radio timing observations.
description: Accepted for publication in MNRAS. 12 pages, 8 figures, 3 table
Sputtering of Highly Adhesive Mo Back Contact Layers for Cu(In,Ga)Se2 Solar Cells
Creators: name: Edoff, M.
name: Viard, N.
name: Wätjen, T.
name: Schleussner, S.
name: Westin, P.O.
name: Leifer, K.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Thin Films Solar Cells
CIS and Other (II-VI) Ternary Thin Film Solar Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 3037-3040
description: In this work the sputter process for back contact Mo layers was adjusted to increase the adhesive
strength of the Mo layers to the glass substrate, while keeping a high deposition rate and high conductivity. Mo
layers were fabricated using DC magnetron sputtering in an in-line sputtering system. The adhesive strength was
tested with ultrasonic agitation. The combination of good adhesion and high deposition rate was obtained by using a
double layer, where the thickness of the first adhesion layer was varied between 25 and 100 nm and sputtered at 15
mTorr, whereas the second bulk layer was varied between 300 and 600 nm and sputtered at 6 mTorr. Solar cells were
prepared for all different thicknesses of the adhesive layer and showed similar performance.
Radiation feedback in dusty clouds
Creators: name: Ishiki, Shohei
name: Okamoto, Takashi
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have investigated the impact of photoionization and radiation pressure on a dusty star-forming cloud using one-dimensional radiation hydrodynamic simulations, which include absorption and re-emission of photons by dust. We find that, in a cloud of mass 10^5 Msun and radius 17 pc, the effect of radiation pressure is negligible when star formation efficiency is 2%. The importance of radiation pressure increases with increasing star formation efficiency or an increasing dust-to-gas mass ratio. The net effect of radiation feedback, however, becomes smaller with the increasing dust-to-gas mass ratio, since the absorption of ultra-violet photons by dust grains suppresses photoionization and hence photoheating.
description: 6 pages, 1 figure, 1 table; largely updated from ver 1., accepted for publication in MNRAS
Prefactor in the dynamically assisted Sauter-Schwinger effect
Creators: name: Schneider, Christian
name: Schützhold, Ralf
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The probability of creating an electron-positron pair out of the quantum vacuum by a strong electric field can be enhanced tremendously via an additional weaker time-dependent field. This dynamically assisted Sauter-Schwinger effect has already been studied in several works. It has been found that the enhancement mechanism depends on the shape of the weaker field. For example, a Sauter pulse $1/\cosh(ωt)^2$ and a Gaussian profile $\exp(-ω^2 t^2)$ exhibit significant, qualitative differences. However, so far most of the analytical studies were focused on the exponent entering the pair-creation probability. Here, we study the subleading prefactor in front of the exponential using the worldline instanton method. We find that the main features of the dynamically assisted Sauter-Schwinger effect, including the dependence on the shape of the weaker field, are basically unaffected by the prefactor. To test the validity of the instanton approximation, we compare the number of produced pairs to a numerical integration of the full Riccati equation.
Kaspar Burkhard, Zeichner - Wollishofer Blog
Creators: name: Brändli, Sebastian
Publisher: name: Zentralbibliothek Zürich
Year: 2021
Subjects: subject: 700 Künste, Bildende und angewandte Kunst
subject: 949 Geschichte anderer Teile Europas
subject: Burkhardt, Kaspar
subject: Zürich-Wollishofen
subject: Biografie

description: Ein Blog zu Geschichte und Quartierleben des Zürcher Stadtquartiers Wollishofen auf wollipedia.ch. Mit Texten von Sebastian Brändli (SB) und Ansichtskarten aus der Sammlung von Markus Zimmermann (MZ).
A 12 Megawatt Power Plant with Fully Implemented Ancillary Services According to the German Grid Codes – The First Results
Creators: name: Kjær, S.B.
name: Dannehl, J.
name: Mecking, F.
name: Godbersen, J.
Publisher: name: WIP
Year: 2011
Subjects: PV Systems
Large PV Power Plants and Distributed PV: System Aspects and Grid Connection

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 3869-3873
description: Since April 2011 all photovoltaic power plants connected in parallel with the German medium voltage
network must comply with the TR3, TR4 and TR8 technical guidelines published by the Fördergesellschaft Windenergie
- FGW (Federation of German Windpower and other Renewable Energies). This includes requirements to active- and
reactive-power, power quality, connection and disconnection of the plant to/from the network, immunity to faults on the
network and requirements for certified simulation models.
This paper gives a brief description about the implementation of the required functions (ancillary services) and shows
some of the first obtained detailed results from a 12 MV photovoltaic power plant located in Busenwurth, northern
Germany, equipped with approximate 720 string-inverters.
Signatures in algebra, topology and dynamics
Creators: name: Ghys, Etienne
name: Ranicki, Andrew
Publisher: name: arXiv
Year: 2015
Subjects: subject: Algebraic Topology (math.AT)
subject: Dynamical Systems (math.DS)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 11E81, 57N65

description: We survey the 19th century development of the signature of a quadratic form, and the applications in the 20th and 21st century to the topology of manifolds and dynamical systems. Version 2 is an expanded and corrected version of Version 1, including an Appendix by the second named author "Algebraic L-theory of rings with involution and the localization exact sequence".
description: Published in Ensaios Matematicos "Six papers on signatures, braids and Seifert surfaces" http://ensaios.sbm.org.br/contents/
Comparison of UMG Materials: Are Ingot Height Independent Solar Cell Efficiencies Possible?
Creators: name: Kohler, D.
name: Kiliani, D.
name: Raabe, B.
name: Seren, S.
name: Hahn, G.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 2542-2547
description: Upgraded metallurgical-grade silicon (UMG-Si) offers benefits in costs and energy consumption,
although the actual low silicon price enhances the need to reach the same level of solar cell efficiency and long-term
behaviour as electronic-grade silicon. Especially boron and phosphorus are hardly removable from the UMG silicon
feedstock. Therefore, also the purity of the feedstock is relevant. This work shows the progress on this route for two
ingot suppliers. The usage of UMG material from different suppliers allows a direct comparison of material quality
and solar cell performance. Additionally, a selection of solar cells from different height positions was cut up into
small stripe-like cells with the intention of receiving an improved spatial resolution in electroluminescence, dLIT,
bulk resistivity and IV measurements.
Wollishofen wird Obervogtei - Wollishofer Blog
Creators: name: Brändli, Sebastian
Publisher: name: Zentralbibliothek Zürich
Year: 2021
Subjects: subject: 350 Öffentliche Verwaltung, Militärwissenschaft
subject: 949 Geschichte anderer Teile Europas
subject: Zürich-Wollishofen
subject: Stadtverwaltung
subject: Kommunalpolitik

description: Ein Blog zu Geschichte und Quartierleben des Zürcher Stadtquartiers Wollishofen auf wollipedia.ch. Mit Texten von Sebastian Brändli (SB) und Ansichtskarten aus der Sammlung von Markus Zimmermann (MZ).