cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Applying the principles of system dynamics as a lever for sustainable service quality – The case of commercial vehicle dealerships in South Africa
Creators: name: Thiele, Christoph
Publisher: name: Edinburgh Napier University
Year: 2020

description: Service quality (SQ) has been a key driver of profitability in commercial vehicle dealerships and is bound to remain so in the increasingly dynamic and competitive context of the automotive sector. Current approaches to optimising SQ in this highly complex environment are mostly unsustainable in spite of an abundance of strategic initiatives.
System dynamics (SD), a modelling and simulation methodology, could prove valuable in exploring the dynamically complex SQ process and in facilitating effective solutions. However, academics and practitioners alike have paid little attention to research on how SD can help implement solutions to sustainably improve SQ – a loophole in both the literature and industry. The context of commercial vehicle dealerships is a critical case in point and elicits the following research questions:
▪ What is the nature of the SQ process in commercial vehicle dealerships?
▪ What are the systemic challenges impacting on the SQ process?
▪ How can SD be deployed to improve the SQ process sustainably?
To address these questions, this study develops a hitherto insufficiently established connection between the two streams of literature on SQ and SD and derives a conceptual framework for primary research illuminating key issues and concerns emerging from the application of SD to SQ. A pragmatic approach is adopted to examine through the SD lens the sociotechnical system that supports the dynamic SQ process in South African commercial vehicle dealerships.
The results show high degrees of interdependence between seven service system components, which underpin the SQ process in commercial vehicle dealerships and drive its change over time – stressing the need for system-based approaches to understand and optimise SQ. The central systemic challenge for service organisations is to make balanced and continuous investments – on individual, organisational and support structural levels – in the maintenance and development of static and dynamic service capabilities despite the daily operational pressure. Based on these findings, the study presents an operational framework consisting of four cyclical stages – Problem articulation & diagnosis, Solution design and action planning, Institutionalisation, and Evaluation. The framework comprises a set of practical recommendations for service managers to effectively apply SD modelling and simulation to SQ for a sustainable SQ process in commercial vehicle dealerships in South Africa.
The effect of maternal obesity on the course of labor
Creators: name: Verdiales, Maribelle
name: Pacheco, Carlos
name: Cohen, Wayne R.
Publisher: name: Kooperation de Gruyter
Year: 2009

description: Aim: To determine whether maternal obesity is associated with dysfunctional labor patterns. Methods: In a case-control design we compared the graphic labor patterns of a group of 105 very obese subjects [body mass index (BMI) >35 kg/m2] with those of 113 lean controls (BMI<26 kg/m2). All entered spontaneous labor at term. Cases with birth weights >4 kg, diabetes mellitus, hypertension and prior cesarean delivery were excluded. Results: The obese group had a significantly higher frequency of arrest of dilatation (17.6 vs. 5.2%; P=0.005). Conclusions: Maternal obesity is associated with active phase labor dysfunction, specifically arrest of dilatation.
A Novel AC Module With High-Voltage Panels in CIS Technology
Creators: name: Henze, N.
name: Sahan, B.
name: Burger, R.
name: Belschner, W.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Components for PV Systems
Balance of System Components

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2743-2750
description: Within the European project PV-MIPS (Photovoltaic Module with Integrated Power Conversion System) an inverter for the integration into a 225 W high-voltage thin-film PV module in CIS (Copper Indium Diselenide) technology has been designed. Within these developments several technical innovations regarding the inverter as well as the PV module design has been realized. For the inverter a three phase topology with DC current link is used (Current Source Inverter, CSI), which is a novelty for low-power PV applications. The inverter is fed by a high-voltage PV module in CIS technology. The MPP Voltage of the module is adapted to the requirements of the inverters DC input and amounts to 380V. In cooperation with the project partners a small scale prototype series has been implemented for demonstration purposes of the product.
The paper provides an overview about the technical realization of AC modules within the PV-MIPS project. The achievements of this new device compared to the state-of-the-art are outlined. The technical advantages as well as the eco-nomical potentials are outlined. The realized prototype of this AC module is presented.
Effects of suprathermal electrons on the proton temperature anisotropy in space plasmas: Electromagnetic ion-cyclotron instability
Creators: name: Shaaban, S. M.
name: Lazar, M.
name: Poedts, S.
name: Elhanbaly, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Space Physics (physics.space-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: In collision-poor plasmas from space, e.g., the solar wind and planetary magnetospheres, the kinetic anisotropy of the plasma particles is expected to be regulated by the kinetic instabilities. Driven by an excess of ion (proton) temperature perpendicular to the magnetic field $(~T_\perp >T_\parallel)$, the electromagnetic ion-cyclotron (EMIC) instability is fast enough to constrain the proton anisotropy, but the observations do not conform to the instability thresholds predicted by the standard theory for bi-Maxwellian models of the plasma particles. This paper presents an extended investigation of the EMIC instability in the presence of suprathermal electrons which are ubiquitous in these environments. The analysis is based on the kinetic (Vlasov-Maxwell) theory assuming that both species, protons and electrons, may be anisotropic, and the EMIC unstable solutions are derived numerically providing an accurate description for conditions typically encountered in space plasmas. The effects of suprathermal populations are triggered by the electron anisotropy and the temperature contrast between electrons and protons. For certain conditions the anisotropy thresholds exceed the limits of the proton anisotropy measured in the solar wind considerably restraining the unstable regimes of the EMIC modes.
description: Accepted for publication in Astrophysics and space science
Pseudozosterops squamiceps subsp. stachyrina Stresemann
Creators: name: , Mary
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Passeriformes
Zosteropidae
Pseudozosterops

description: Pseudozosterops squamiceps stachyrina Stresemann Pseudozosterops squamiceps stachyrina Stresemann, 1932b: 107 (Latimodjong-Gebirge 2200 m). Now Lophozosterops squamiceps stachyrinus (Stresemann, 1932). See Mees 1969: 186–187, White and Bruce, 1986: 418, and van Balen, 2008: 481– 482. HOLOTYPE: AMNH 461240, adult male, collected in the Latimojong (5 Latimodjong) Mountains, 2200 ft, 03.30S, 120.05E (USBGN, 1982a), south central Sulawesi, on 24 June 1930, by Gerd Heinrich (no. 583). COMMENTS: Stresemann cited Heinrich’s unique field number of the holotype in the original description but did not indicate the size of his type series. Later, he (Stresemann, 1940: 67) noted that he had five male, three female, and one juvenile specimens from Latimojong. Support for Heinrich’s expedition came from L.C. Sanford for AMNH and from ZMB; primary types came to AMNH and the remainder of the collection was divided between the two institutions (Stresemann, 1931b: 7–9). Five paratypes are in AMNH: males, AMNH 293127, 293128; females, AMNH 293129–293131. The remaining paratypes are probably in ZMB.
description: Published as part of Mary, 2011, Type Specimens Of Birds In The American Museum Of Natural History Part 9. Passeriformes: Zosteropidae And Meliphagidae, pp. 1-193 in Bulletin of the American Museum of Natural History 2011 (348) on page 36
description: {"references": ["Stresemann, E. 1932 b. Vorlaufiges uber die ornithologischen Ergebnisse der Expedition Heinrich 1930 - 1932. VII. Zur Ornithologie von Sudost-Celebes. Ornithologische Monatsberichte 40: 104 - 115.", "Mees, G. F. 1969. A systematic review of the Indo- Australian Zosteropidae (Part III). Zoologische Verhandelingen 102: 3 - 390.", "White, C. M. N., and M. D. Bruce. 1986. The birds of Wallacea. B. O. U. check-list no. 7. London: British Ornithologists' Union, 524 pp.", "van Balen, S. 2008. Family Zosteropidae (whiteeyes). In J. del Hoyo, A. Elliot, and D. Christie (editors), Handbook of birds of the world, vol. 13, Penduline-tits to shrikes: 402 - 485. Barcelona: Lynx Edicions, 879 pp., 60 pls., 536 photographs.", "Stresemann, E. 1940. Die Vogel von Celebes. Teil III. Systematik und Biologie. Journal fur Ornithologie 88: 1 - 135.", "Stresemann, E. 1931 b. Vorlaufiges uber die ornithologischen Ergebnisse der Expedition Heinrich 1930 - 31. I. Zur Ornithologie des Latimodjong-Gebirges im sudlichen Central- Celebes. Ornithologische Monatsberichte 39: 7 - 14."]}
Cu(In,Ga)S2 Based Solar Cells on In2O3:Mo Coated Substrates for Multi-Junction Applications
Creators: name: Merdes, S.
name: Schmidt, M.
name: Klaer, J.
name: Klenk, R.
name: Krammer, J.
name: Lux-Steiner, M.C.
Publisher: name: WIP
Year: 2011
Subjects: Thin Film Solar Cells
CIS and Related Ternary and Quaternary Thin Film Solar Cells

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 2951-2954
description: Using the sequential process, we have prepared Cu(In,Ga)S2 based solar cells on transparent In2O3:Mo
back-contacts for multi-junction applications. A thin layer of Mo was sputtered on the In2O3:Mo transparent backcontact
in order to form a MoS2 contact during sulfurization. We have investigated the role of the Mo thickness on
the optical and electrical properties of the absorbers and solar cells. A cell efficiency of 8.1% with an open circuit
voltage of 817 mV was achieved using a 5 nm thick Mo layer; however this cell showed poor transparency, not
exceeding 20%. Reducing the Mo layer thickness improved the transparency of the solar cell; however it also resulted
in an increase of the device series resistance and a decrease of the fill factor. The need of introducing a MoS2 layer in
the transparent CIGS based solar cell is discussed.
Evaluation of distance-based approaches for forensic comparison: Application to hand odor evidence
Creators: name: Rivals, Isabelle
name: Sautier, Cédric
name: Cognon, Guillaume
name: Cuzuel, Vincent
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The issue of distinguishing between the same-source and different-source hypotheses based on various types of traces is a generic problem in forensic science. This problem is often tackled with Bayesian approaches, which are able to provide a likelihood ratio that quantifies the relative strengths of evidence supporting each of the two competing hypotheses. Here, we focus on distance-based approaches, whose robustness and specifically whose capacity to deal with high-dimensional evidence are very different, and need to be evaluated and optimized. A unified framework for direct methods based on estimating the likelihoods of the distance between traces under each of the two competing hypotheses, and indirect methods using logistic regression to discriminate between same-source and different-source distance distributions, is presented. Whilst direct methods are more flexible, indirect methods are more robust and quite natural in machine learning. Moreover, indirect methods also enable the use of a vectorial distance, thus preventing the severe information loss suffered by scalar distance approaches.Direct and indirect methods are compared in terms of sensitivity, specificity and robustness, with and without dimensionality reduction, with and without feature selection, on the example of hand odor profiles, a novel and challenging type of evidence in the field of forensics. Empirical evaluations on a large panel of 534 subjects and their 1690 odor traces show the significant superiority of the indirect methods, especially without dimensionality reduction, be it with or without feature selection.
Optimization and Analysis of Deposition Processes of Amorphous Silicon for Silicon Heterojunction Solar Cells
Creators: name: Meinhardt, C.
name: Pysch, D.
name: Bivour, M.
name: Zimmermann, K.
name: Schetter, C.
name: Hermle, M.
name: Glunz, S.W.
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; 1810-1815
description: Intrinsic hydrogenated amorphous silicon a-Si:H(i) offers a very good passivation quality. Adding dopants
to the deposition reduces the passivation quality. However, sufficient doping is needed to build the p-n-junction which is
essential to gain an actual voltage. Furthermore, the conductivity of the a-Si:H is also a function of the dopant concentration.
Poor conductivities in the emitter layer causes high series resistances, limiting fill factor and cell efficiency. To
achieve good passivation quality, sufficient band bending and low resistivity simultaneously, we have introduced a new
approach of applying a doping profile to the deposition of the amorphous emitter layer. The conventional concept to
process silicon heterojunction (SHJ) solar cells is to deposit a heavily doped a:Si-H(n or p) layer on a thin intrinsic one.
In this paper we will compare structures with gradually doped emitter profiles to conventional ones. Gradually doped
emitters are processed in one single deposition step, which offers simple and fast processing. The total electrical conductivity
can be increased by a well chosen doping profile. This is shown by simulations based on conductivity measurements
and full heterojunction solar cells. The best n-type, FZ wafer heterojunction solar cell realized within this first investigation
has an efficiency of 18.9%.
Superdiffusive dispersals impart the geometry of underlying random walks
Creators: name: Zaburdaev, V.
name: Fouxon, I.
name: Denisov, S.
name: Barkai, E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: It is recognised now that a variety of real-life phenomena ranging from diffuson of cold atoms to motion of humans exhibit dispersal faster than normal diffusion. Lévy walks is a model that excelled in describing such superdiffusive behaviors albeit in one dimension. Here we show that, in contrast to standard random walks, the microscopic geometry of planar superdiffusive Lévy walks is imprinted in the asymptotic distribution of the walkers. The geometry of the underlying walk can be inferred from trajectories of the walkers by calculating the analogue of the Pearson coefficient.
Photoinduced Current Transient Spectroscopy of Cu(InGa)(S1-ySey)2 Thin Films Absorbers
Creators: name: Odrinsky, A.P.
name: Gremenok, V.F.
name: Zaretskaya, E.P.
Publisher: name: WIP
Year: 2011
Subjects: Thin Film Solar Cells
CIS and Related Ternary and Quaternary Thin Film Solar Cells

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 2961-2962
description: We investigate defects in a single CIGSS absorber film by photo-induced current transient
spectroscopy (PICTS) in which light excitation of a sample is employed. The peculiarities of PICTS registration of
defect recharging have been established. The peculiarities can be explained in the frame of Lany-Zunger model of the
native metastable defect of CIGS. The experimental evidence of such explanation is presented.
Distress propagation in complex networks: the case of non-linear DebtRank
Creators: name: Bardoscia, Marco
name: Caccioli, Fabio
name: Perotti, Juan Ignacio
name: Vivaldo, Gianna
name: Caldarelli, Guido
Publisher: name: arXiv
Year: 2015
Subjects: subject: Risk Management (q-fin.RM)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: We consider a dynamical model of distress propagation on complex networks, which we apply to the study of financial contagion in networks of banks connected to each other by direct exposures. The model that we consider is an extension of the DebtRank algorithm, recently introduced in the literature. The mechanics of distress propagation is very simple: When a bank suffers a loss, distress propagates to its creditors, who in turn suffer losses, and so on. The original DebtRank assumes that losses are propagated linearly between connected banks. Here we relax this assumption and introduce a one-parameter family of non-linear propagation functions. As a case study, we apply this algorithm to a data-set of 183 European banks, and we study how the stability of the system depends on the non-linearity parameter under different stress-test scenarios. We find that the system is characterized by a transition between a regime where small shocks can be amplified and a regime where shocks do not propagate, and that the overall stability of the system increases between 2008 and 2013.
description: 9 pages, 5 figures
Hybrid L-CPV, a New Efficient Approach Mixing CPV with Illumination
Creators: name: Núñez, R.
name: Antón, I.
name: Sala, G.
Publisher: name: WIP
Year: 2011
Subjects: Advanced Photovoltaics : New Concepts and Ultra-High Efficiency
Terrestrial Concentrator Systems

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 148-152
description: In this paper, we present the Hybrid L-CPV concept, which mixes conventional CPV technology with illumination
using low-cost fiber optics as light distributor. This approach may offer a significant increase in the value of a
CPV system for a minimal cost increase. Since illumination from sunlight with fibers does not require energy conversion,
the losses are limited to those within the fibers, allowing for efficient lighting using just small area of the CPV system. At
the same time the need of concentration and tracking required by a fiber-based illumination system is fully covered by the
infrastructure of the CPV system. In this work, we present a theoretical study of the losses in optical fibers in order to
understand and characterize them, as well an experimental confirmation of these results with low cost PMMA fibers. It is
found that the highest the f-number of the concentrating lens, the less losses but this value is also limited by the compactness
of the receptor, the f-number of cell lens and the optical efficiency of the lens. PMMA softening at 85 ºC limits maximum
concentration to 100X which simultaneously avoids using any secondary optical element for the lighting portion of
the system.
The BAHAMAS project: Calibrated hydrodynamical simulations for large-scale structure cosmology
Creators: name: McCarthy, Ian G.
name: Schaye, Joop
name: Bird, Simeon
name: Brun, Amandine M. C. Le
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The evolution of the large-scale distribution of matter is sensitive to a variety of fundamental parameters that characterise the dark matter, dark energy, and other aspects of our cosmological framework. Since the majority of the mass density is in the form of dark matter that cannot be directly observed, to do cosmology with large-scale structure one must use observable (baryonic) quantities that trace the underlying matter distribution in a (hopefully) predictable way. However, recent numerical studies have demonstrated that the mapping between observable and total mass, as well as the total mass itself, are sensitive to unresolved feedback processes associated with galaxy formation, motivating explicit calibration of the feedback efficiencies. Here we construct a new suite of large-volume cosmological hydrodynamical simulations (called BAHAMAS, for BAryons and HAloes of MAssive Systems) where subgrid models of stellar and Active Galactic Nucleus (AGN) feedback have been calibrated to reproduce the present-day galaxy stellar mass function and the hot gas mass fractions of groups and clusters in order to ensure the effects of feedback on the overall matter distribution are broadly correct. We show that the calibrated simulations reproduce an unprecedentedly wide range of properties of massive systems, including the various observed mappings between galaxies, hot gas, total mass, and black holes, and represent a significant advance in our ability to mitigate the primary systematic uncertainty in most present large-scale structure tests.
description: 34 pages, 28 figures. MNRAS, accepted
Pseudozosterops squamiceps subsp. analoga Stresemann
Creators: name: , Mary
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Passeriformes
Zosteropidae
Pseudozosterops

description: Pseudozosterops squamiceps analoga Stresemann Pseudozosterops squamiceps analoga Stresemann, 1932b: 107 (Tanke Salokko, 2000 m). Now Lophozosterops squamiceps analogus (Stresemann, 1932). See Mees, 1969: 188–189, White and Bruce, 1986: 418, and van Balen, 2008: 481– 482. HOLOTYPE: AMNH 300339, adult male, collected on Tanke Salokko, 1500 m, Mekongga (5 Mengkoka) Mountains, 03.35S, 121.15E (USBGN, 1982a), southeastern Sulawesi Island, Indonesia, on 5 January 1932, by Gerd Heinrich (no. 6399). COMMENTS: Stresemann cited Heinrich’s unique field number of the holotype in the original description but did not mention the size of his type series. Later, he (Stresemann, 1940: 67) said that he had eight male and seven female specimens, but this probably refers to the number of specimens for which he published measurements; Stresemann had the entire collection in hand when he studied it. As in the case of the type series of Lophozosterops squamiceps stachyrinus (above), the type came to AMNH and the remainder of the specimens were divided between AMNH and ZMB; paratypes at AMNH, all collected at Tanke Salokko, are: males, AMNH 296564, 300334–300338, 300340, 300341; immature male, AMNH300342; females, AMNH 300343–300349; immature female, AMNH 300350. AMNH 296564 was sent to Professor Sarasin in Basel in 1932 and may now be in NMB.
description: Published as part of Mary, 2011, Type Specimens Of Birds In The American Museum Of Natural History Part 9. Passeriformes: Zosteropidae And Meliphagidae, pp. 1-193 in Bulletin of the American Museum of Natural History 2011 (348) on page 36
description: {"references": ["Stresemann, E. 1932 b. Vorlaufiges uber die ornithologischen Ergebnisse der Expedition Heinrich 1930 - 1932. VII. Zur Ornithologie von Sudost-Celebes. Ornithologische Monatsberichte 40: 104 - 115.", "Mees, G. F. 1969. A systematic review of the Indo- Australian Zosteropidae (Part III). Zoologische Verhandelingen 102: 3 - 390.", "White, C. M. N., and M. D. Bruce. 1986. The birds of Wallacea. B. O. U. check-list no. 7. London: British Ornithologists' Union, 524 pp.", "van Balen, S. 2008. Family Zosteropidae (whiteeyes). In J. del Hoyo, A. Elliot, and D. Christie (editors), Handbook of birds of the world, vol. 13, Penduline-tits to shrikes: 402 - 485. Barcelona: Lynx Edicions, 879 pp., 60 pls., 536 photographs.", "Stresemann, E. 1940. Die Vogel von Celebes. Teil III. Systematik und Biologie. Journal fur Ornithologie 88: 1 - 135."]}
Glycomacropeptide from camel milk inhibits the adhesion of enterotoxigenic Escherichia coli K88 to porcine cells
Creators: Althnaibat, Rami M.
Koch, Mandy
Bruce, Heather L.
Wefers, Daniel
Gänzle, Michael G.
Publisher: name: University of Alberta Library
Year: 2022

Enterotoxigenic Escherichia coli (ETEC) are a major cause of childhood diarrhoea and of diarrhoea in piglets and calves. This study compared the anti-adhesive activities against ETEC of glycomacropeptide (GMP) from Bactrian camels and dromedaries with that of bovine GMP. GMP was purified by ion exchange chromatography and ultra-filtration. The monosaccharide content of GMP from Bactrian camels and dromedaries was about twice as high when compared with bovine GMP. Glycans from camels included fucose and N-acetylglucosamine, which were absent in bovine GMP. GMP from both camel species prevented ETEC adhesion to porcine blood cells at a concentration of 0.24 g L−1 to 0.28 g L−1 respectively, a concentration that is about 20-fold lower when compared with bovine GMP. This increased activity likely relates to the increased glycosylation and the density of glycan spacing, and/or to differences in the glycan composition.
The Effects of Accelerated Aging Tests on Metamorphic III-V Concentrator Solar Cells Mounted on Substrates
Creators: name: Eltermann, F.
name: Wiesenfarth, M.
name: Siefer, G.
name: Wilde, J.
name: Bett, A.W.
Publisher: name: WIP
Year: 2011
Subjects: Advanced Photovoltaics : New Concepts and Ultra-High Efficiency
Terrestrial Concentrator Systems

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 163-168
description: Various stress tests have been applied to metamorphic III V concentrator solar cells mounted on substrates. The duration of the tests was up to 3000 hours in order to provoke accelerated aging and to identify whether any degradation occurs. Effects introduced due to the applied stress were expected to be seen in light IV curve measurements. Therefore, we investigated the stressed samples by light IV measurements under high intensity levels, optical inspection by a light microscope and an elemental analysis by SEM EDX. Reference samples were used to evaluate the characterization methods for IV measurements and to confirm the test results. Neither total failures nor critical degradation in the IV characteristics were observed for more than 70 test samples, which underwent stress procedures including damp heat, thermal cycling, humidity freeze and high temperature tests.
Eigenvalue pinching on $\text{spin}^c$ manifolds
Creators: name: Roos, Saskia
Publisher: name: arXiv
Year: 2016
Subjects: subject: Spectral Theory (math.SP)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We derive various pinching results for small Dirac eigenvalues using the classification of $\text{spin}^c$ and spin manifolds admitting nontrivial Killing spinors. For this, we introduce a notion of convergence for $\text{spin}^c$ manifolds which involves a general study on convergence of Riemannian manifolds with a principal $\mathbb{S}^1$-bundle. We also analyze the relation between the regularity of the Riemannian metric and the regularity of the curvature of the associated principal $\mathbb{S}^1$-bundle on $\text{spin}^c$ manifolds with Killing spinors.
description: 28 pages, comments are welcome
The EUCLID NISP grisms flight models performance
Creators: name: Costille, Anne
name: Caillat, A.
name: Rossin, C.
name: Pascal, S.
name: Sanchez, P.
name: Barette, R.
name: Laurent, P.
name: Foulon, B.
name: Pariès, C.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: ESA EUCLID mission will be launched in 2020 to understand the nature of the dark energy responsible of the accelerated expansion of the Universe and to map the geometry of the dark matter. The map will investigate the distanceredshift relationship and the evolution of cosmic structures thanks to two instruments: the NISP and the VIS. The NISP (Near Infrared Spectro-Photometer) is operating in the near-IR spectral range (0.9-2$μ$m) with two observing modes: the photometric mode for the acquisition of images with broad band filters, and the spectroscopic mode for the acquisition of slitless dispersed images on the detectors. The spectroscopic mode uses four low resolution grisms to cover two spectral ranges: three ''red'' grisms for 1250-1850nm range, with three different orientations, and one ''blue'' grism for 920- 1300nm range. The NISP grisms are complex optical components combining four main optical functions: a grism function (dispersion without beam deviation of the first diffracted order) done by the grating on the prism hypotenuse, a spectral filter done by a multilayer filter deposited on the first face of the prism to select the spectral bandpass, a focus function done by the curved filter face of the prism (curvature radius of 10m) and a spectral wavefront correction done by the grating which grooves paths are nor parallel, neither straight. The development of these components have been started since 10 years at the Laboratoire d'Astrophysique de Marseille (LAM) and was linked to the project phases: prototypes have been developed to demonstrate the feasibility, then engineering and qualification models to validate the optical and mechanical performance of the component, finally the flight models have been manufactured and tested and will be installed on NISP instrument. In this paper, we present the optical performance of the four EUCLID NISP grisms flight models characterized at LAM: wavefront error, spectral transmission and grating groove profiles. The test devices and the methods developed for the characterization of these specific optical components are described. The analysis of the test results have shown that the grisms flight models for NISP are within specifications with an efficiency better than 70% on the spectral bandpass and a wavefront error on surfaces better than 30nm RMS. The components have withstood vibration qualification level up to 11.6g RMS in random test and vacuum cryogenics test down to 130K with measurement of optical quality in transmission. The EUCLID grisms flight models have been delivered to NISP project in November 2017 after the test campaign done at LAM that has demonstrated the compliance to the specifications.
Übersicht der vom November 1897 bis und mit Oktober 1898 erschienenen Beiträge und Materialien zur Geschichte von Stadt und Kanton Zürich
Creators: name: Brunner, Heinrich
Publisher: name: Fäsi & Beer
Year: 1899
Subjects: subject: 010 Bibliografie
subject: Kanton Zürich
subject: Zürich
subject: Bibliografie
subject: Geschichte
subject: Landeskunde
subject: Volkskunde

description: Aus dem Zürcher Taschenbuch auf das Jahr 1899.
title: Exploring the 'civic commercial home' of Edinburgh as a welcome tourist destination
Creators: name: Palkowski, Michael Robert
Publisher: name: Edinburgh Napier University
Year: 2020

description: This study uses 'hospitality' in a sociological way, to examine the creation of Edinburgh's 'welcome tourist destination'. In viewing Edinburgh as a 'host', trying to attract 'guests', I consider the conflicting civic and commercial issues which emerged when trying to renovate the urban home. Edinburgh had 'ideal guests' in mind, which had an influence on the type of maintenance that was approved, what was denied and what was emphasised as important. I discuss Edinburgh's anxiety of official representation by evoking the metaphor of the tyrannical host, which eventually gives way to a co-constructed tourist gaze.
I use archival sources, stream of consciousness observations, autoethnography and photographs, to establish an exploratory concept, "the civic commercial home", which allowed me to explore these tensions in depth from a historical perspective and from an evocative perspective.
Bibliographie der Geschichte, Landes- und Volkskunde von Stadt und Kanton Zürich: November 1898 bis Oktober 1899
Creators: name: Brunner, Heinrich
Publisher: name: Fäsi & Beer
Year: 1900
Subjects: subject: 010 Bibliografie
subject: Kanton Zürich
subject: Zürich
subject: Bibliografie
subject: Geschichte
subject: Landeskunde
subject: Volkskunde

description: Aus dem Zürcher Taschenbuch auf das Jahr 1900.
Quantum criticality in the two-dimensional dissipative quantum XY model-II
Creators: name: Zhu, Lijun
name: Hou, Changtao
name: Varma, Chandra M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Earlier Monte-Carlo calculations on the dissipative two-dimensional XY model are extended in several directions. We study the phase diagram and the correlation functions when dissipation is very small, where it has properties of the classical 3D-XY transition, i.e. one with a dynamical critical exponent $z=1$. The transition changes from $z=1$ to the class of criticality with $z \to \infty$ driven by topological defects, discovered earlier, beyond a critical dissipation. We also find that the critical correlations have power-law singularities as a function of tuning the ratio of the kinetic energy to the potential energy for fixed large dissipation, as opposed to essential singularities on tuning dissipation keeping the former fixed. A phase with temporal disorder but spatial order of the Kosterlitz-Thouless form is also further investigated. We also present results for the transition when the allowed Caldeira-Leggett form of dissipation and the allowed form of dissipation coupling to the compact rotor variables are both included. The nature of the transition is then determined by the Caldeira-Leggett form.
description: Improvements in presentation and addition of a section with results for periodic form of dissipation
Influence of Concentration of Phosphorus Dopant Liquid and Pulse Distance on Parameters of LCP Selective Emitters for Silicon Solar Cells
Creators: name: Hopman, S.
name: Fell, A.
name: Mesec, M.
name: Kluska, S.
name: Fleischmann, C.
name: Granek, F.
name: Glunz, S.W.
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; 1727-1731
description: In this paper newest results concerning n-type Laser Chemical Processing (LCP) doping for varying
laser and liquid parameters will be presented with regard to sheet resistance, contact resistance and cell efficiency. In
the first part of the paper the influence of dopant concentration reduction is investigated by using a TLM structure.
Additionally the pulse energies are varied for different pulse distances to find optimum doping parameters. It is
demonstrated that the dopant concentration of the dopant source can be strongly reduced and that for all tested pulse
energies an optimal pulse distance exists. To verify if these results are suitable for solar cell production selected laser
parameters were tested on a 30×60 mm² screen-printed solar cell structure. An efficiency improvement of 0.4 %abs is
achieved for cells with LCP selective emitter in comparison to reference cells without selective emitter under the
metal fingers.
Correlation between non-centrosymmetry and superconductivity in quasi-one-dimensional compounds A2Cr3As3 (A=K, Rb)
Creators: name: Wang, Zhe
name: Yi, Wei
name: Wu, Qi
name: Sidorov, Vladimir A.
name: Bao, Jinke
name: Tang, Zhangtu
name: Guo, Jing
name: Zhou, Yazhou
name: Zhang, Shan
name: Li, Hang
name: Shi, Youguo
name: Wu, Xianxin
name: Zhang, Ling
name: Yang, Ke
name: Li, Aiguo
name: Cao, Guanghan
name: Hu, Jiangping
name: Sun, Liling
name: Zhao, Zhongxian
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Non-centrosymmetric superconductors, whose crystal structure is absent of inversion symmetry, have recently received special attentions due to the expectation of unconventional pairings and exotic physics associated with such pairings. The newly discovered superconductors A2Cr3As3 (A=K, Rb), featured by the quasi-one dimensional structure with conducting CrAs chains, belongs to such kind of superconductor. In this study, we are the first to report the finding that the superconductivity of A2Cr3As3 (A=K, Rb) has a positive correlation with the extent of non-centrosymmetry. Our in-situ high pressure ac susceptibility and synchrotron x-ray diffraction measurements reveal that the larger bond angle of As-Cr-As in the CrAs chains can be taken as a key factor controlling superconductivity. While the smaller bond angle and the distance between the CrAs chains also affect the superconductivity due to their structural connections with the angle. We find that the larger value of the difference between the larger and samller angles, which is associated with the extent of the non-centrosymmetry of the lattice structure, is in favor of superconductivity. These results are expected to shed a new light on the underlying mechanism of the superconductivity in these Q1D superconductors and also to provide new perspective in understanding other non-centrosymmetric superconductors.
description: 13 pages, 4 figures
The Optimization of Silicon Nitride Film for the Rear Passivation Layer of the p-Type Silicon Based Solar Cell
Creators: name: Kurimoto, Y.
name: Imai, R.
name: Suganuma, R.
name: Yashiki, H.
name: Ooka, S.
name: Ozaki, R.
name: Imoto, J.
name: Yamasaki, I.
name: Nakamura, K.
name: Machida, T.
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; 1840-1844
description: For high efficiency( over 18% for 100 µm thick) p-type multi-crystalline silicon based solar cell of
which rear surface is passivated using silicon nitride SiNx, a systematic analysis about the parasitic shunting was carried
out. First, the relation between p+ layer and the parasitic shunting suppression was analyzed through the characterization
of solar cells on which different rear electrode firing processes were applied. It was revealed that the lowering of the
sheet resistance, so the increase of the hole carrier density, at p+ layer is essential for the improvement of the parasitic
shunting suppression ability. Secondly, the relation between the parasitic shunting, field effect passivation and fixed
charge density at the Si/SiNx interface was analyzed through the characterization of solar cells on which different SiNx
layer was applied as the rear surface passivation layer. The presence of the parasitic shunting and field effect passivation
was confirmed experimentally. The dependences of these two effects on the fixed charge density are qualitatively
consistent with those expected from the theory.
The integration of OEIS links in zbMATH Open
Creators: name: Ehsani, Dariush
name: Petrera, Matteo
name: Teschke, Olaf
Publisher: name: Berlin : EMS Press
Year: 2023
Subjects: subject: 510

description: The transition towards an Open Data Platform enabled zbMATH Open to build a network of open resources. Important components in the evolving information system are mathematical research data, which are of quite heterogeneous nature. For their interlinking, zbMATH Open provides Application Programming Interface (API) solutions to offer mathematical research data to the community. Among other APIs recently implemented at zbMATH Open, the so-called Links API is aimed to document interconnections between our database and external platforms which display mathematical literature indexed at zbMATH Open. The Digital Library of Mathematical Functions (DLMF) has been our first partner and their data have been integrated in our database in 2021. Recently we interlinked with the second platform, the Online Encyclopedia of Integer Sequences (OEIS), a renowned digital database of number sequences that cites a lot of mathematical literature, especially from number theory and graph theory. The purpose of this short contribution is to announce and discuss the links to OEIS data in zbMATH Open.
A Novel, Lead-Free Soldering Process for Concentrator Photovoltaic Cells
Creators: name: Clarke, M.
name: Everett, V.
name: Vivar, M.
name: Ponweiser, K.
Publisher: name: WIP
Year: 2011
Subjects: Advanced Photovoltaics : New Concepts and Ultra-High Efficiency
Terrestrial Concentrator Systems

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 169-171
description: A new and novel approach to soldering CPV cells utilizing a lead free solder process was successfully
demonstrated. Measurements of I-V curves and series resistance, before and after-soldering, indicated acceptable
performance. Thermal cycle testing (per IEC-62108) of the initial samples yielded power degradation within the pass
criteria limits.
Motion of small bubbles and drops in viscoelastic fluids
Creators: name: Langevin, Dominique
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Viscoelastic materials containing bubbles or drops are encountered in numerous application fields, and are presently the object of much interest. The motion of bubbles and drops in these matrices can be significantly different than in Newtonian fluids. This review is restricted to the case of motion in quiescent fluids (or small Reynolds number) and of small bubbles and drops, that are not appreciably deformed during their motion. It includes a brief description of properties of viscoelastic systems and of the motion of solid particles in these systems. The case of very small drops undergoing Brownian motion is related to recent advances in microrheology. The motion of larger drops and bubbles due to gravity in yield stress fluids is discussed and linked to Ostwald ripening. Recent advances on the understanding of the rheological properties of the composite systems are also briefly discussed.
Analytic structure of QCD propagators in Minkowski space
Creators: name: Siringo, Fabio
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Analytical functions for the propagators of QCD, including a set of chiral quarks, are derived by a one-loop massive expansion in the Landau gauge, deep in the infrared. By analytic continuation, the spectral functions are studied in Minkowski space, yielding a direct proof of positivity violation and confinement from first principles.The dynamical breaking of chiral symmetry is described on the same footing of gluon mass generation, providing a unified picture. While dealing with the exact Lagrangian, the expansion is based on massive free-particle propagators, is safe in the infrared and is equivalent to the standard perturbation theory in the UV. By dimensional regularization, all diverging mass terms cancel exactly without including mass counterterms that would spoil the gauge and chiral symmetry of the Lagrangian. Universal scaling properties are predicted for the inverse dressing functions and shown to be satisfied by the lattice data. Complex conjugated poles are found for the gluon propagator, in agreement with the i-particle scenario.
description: Some comments on BRST invariance and some new references are added in the new version
Kinetik der Psoriasisrückbildung unter Photochemotherapie
Creators: name: Meffert, Hans
name: Musaad, Mohamed Osman
name: Meffert, Beate
name: Biella, Uwe
name: Metz, Dietrich
name: Rowe, Elisabeth
name: Sönnichsen, Niels
Publisher: name: Humboldt-Universität zu Berlin, Medizinische Fakultät - Universitätsklinikum Charité
Year: 1993
Subjects: subject: Digitale Signalverarbeitung
subject: Approximation
subject: Photochemotherapie
subject: PUVA
subject: PASI
subject: digital signal processing
subject: approximation
subject: Photochemotherapy
subject: 004 Informatik
subject: 610 Medizin

description: Unter Verwendung des Psoriasis-Ausdehnungs- und Schweregrad-Index (PASI) kann die Rückbildung der unstimulierten Psorasis unter Photochemotherapie mit einfachen mathematischen Mitteln beschrieben werden. Die Hauterscheinungen bilden sich zunächst rasch, dann immer langsamer zurück. Da gleichzeitig die UV-Dosis steigt, sollte die Anzahl der PUVA-Expositionen möglichst klein gehalten werden.
description: By means of the psoriasis area and severity index (PASI) in case of non-stimulated psoriasis subjected to photochemotherapy (PUVA), the decline of skin lesions can be followed by means of simple mathematical methods. This decline is initially rapid and then slows down continuously. Since UV doses are at the same time tapered on, the number of PUVA exposures should be kept as low as possible.
MERLiN: Mixture Effect Recovery in Linear Networks
Creators: name: Weichwald, Sebastian
name: Grosse-Wentrup, Moritz
name: Gretton, Arthur
Publisher: name: arXiv
Year: 2015
Subjects: subject: Methodology (stat.ME)
subject: Neurons and Cognition (q-bio.NC)
subject: Applications (stat.AP)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Causal inference concerns the identification of cause-effect relationships between variables, e.g. establishing whether a stimulus affects activity in a certain brain region. The observed variables themselves often do not constitute meaningful causal variables, however, and linear combinations need to be considered. In electroencephalographic studies, for example, one is not interested in establishing cause-effect relationships between electrode signals (the observed variables), but rather between cortical signals (the causal variables) which can be recovered as linear combinations of electrode signals. We introduce MERLiN (Mixture Effect Recovery in Linear Networks), a family of causal inference algorithms that implement a novel means of constructing causal variables from non-causal variables. We demonstrate through application to EEG data how the basic MERLiN algorithm can be extended for application to different (neuroimaging) data modalities. Given an observed linear mixture, the algorithms can recover a causal variable that is a linear effect of another given variable. That is, MERLiN allows us to recover a cortical signal that is affected by activity in a certain brain region, while not being a direct effect of the stimulus. The Python/Matlab implementation for all presented algorithms is available on https://github.com/sweichwald/MERLiN
Optimization of Point Focus and Mirror Based Spectrum Splitting CPV Systems: Results from the Apollon Project
Creators: name: Timò, G.
name: Minuto, A.
name: Morabito, P.
name: Martinelli, A.
name: Chemelli, C.
name: Sagnes, I.
name: Jakomin, R.
name: Beaudoin, G.
name: Schineller, B.
name: Heuken, M.
name: Sturm, M.
name: Butturi, M.A.
name: Antonini, A.
name: Zurru, P.
name: Noack, M.
name: Padovani, S.
name: Di Vora, I.
name: Borshchov, S.
name: Kenny, R.P.
name: Aitasalo, T.
name: Roca, F.
name: Graditi, G.
name: Cancro, C.
name: Pellegrino, M.
name: Privato, C.
name: Medina, E.
name: Heasman, K.C.
name: De Wild-Scholten, M.
name: Olson, C.
name: Aleo, F.
name: Lo Trovato, M.L.
name: Vincenzi, D.
name: Guidi, V.
name: Georghiou, G.E.
name: Norton, M.
Publisher: name: WIP
Year: 2011
Subjects: Advanced Photovoltaics : New Concepts and Ultra-High Efficiency
Terrestrial Concentrator Systems

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 137-144
description: An overview of the achievements accomplished in the first phase of the APOLLON project, related to
the optimisation of point focus (PF) and mirror based spectra splitting systems (MBS3) is presented as well as some
preliminary results on the proposed innovative Concentrating Photovotaic (CPV) technologies (intelligent CPV
modules).