cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum well states in fractured crystals of the heavy fermion material CeCoIn$_5$
Creators: name: Gauthier, Nicolas
name: Sobota, Jonathan A.
name: Hashimoto, Makoto
name: Pfau, Heike
name: Lu, Dong-Hui
name: Bauer, Eric D.
name: Ronning, Filip
name: Kirchmann, Patrick S.
name: Shen, Zhi-Xun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Quantum well states appear in metallic thin films due to the confinement of the wave function by the film interfaces. Using angle-resolved photoemission spectroscopy, we unexpectedly observe quantum well states in fractured single crystals of CeCoIn$_5$. We confirm that confinement occurs by showing that these states' binding energies are photon-energy independent and are well described with a phase accumulation model, commonly applied to quantum well states in thin films. This indicates that atomically flat thin films can be formed by fracturing hard single crystals. For the two samples studied, our observations are explained by free-standing flakes with thicknesses of 206 and 101 Å. We extend our analysis to extract bulk properties of CeCoIn$_5$. Specifically, we obtain the dispersion of a three-dimensional band near the zone center along in-plane and out-of-plane momenta. We establish part of its Fermi surface, which corresponds to a hole pocket centered at $Γ$. We also reveal a change of its dispersion with temperature, a signature that may be caused by the Kondo hybridization.
description: 11 pages, 8 figures
Of NBOs and kHz QPOs: a low-frequency modulation in resonant oscillations of relativistic accretion disks
Creators: name: Horak, J.
name: Abramowicz, M.
name: Karas, V.
name: Kluzniak, W.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The origin of quasi periodic modulations of flux in the kilohertz range (kHz QPOs), observed in low-mass X-ray binaries, is usually assumed to be physically distinct from that of the ``normal branch oscillations'' (NBOs) in the Z-sources. We show that a low-frequency modulation of the kHz QPOs is a natural consequence of the non-linear relativistic resonance suggested previously to explain the properties of the high-frequency twin peaks. The theoretical results discussed here are reminiscent of the 6 Hz variations of frequency and amplitude of the kHz QPOs reported by Yu, van der Klis and Jonker (2001).
description: Accepted for publication in PASJ; 4 pages, 1 figure
The influence of an individual opinion in the Sznajd Model
Creators: name: Klietsch, Nina
Publisher: name: arXiv
Year: 2004
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The method of Damage Spreading was used to simulate the influence that a single persons' change of opionion has on the consensus opinion built up in a population if one assumes opinions to form according to the Sznajd Model. The results confirm the intuitive assumption that there is hardly any chance for one person to change the consensus, that the effect of this change dies out after a certain time and its range decreases with time. The consensus times were compared and it turned out that the consensus can be delayed or accelerated by this slight modification and that the amount of the difference in the consensus times obeys a certain power law as well as the lifetime of the effect. Moreover two scaling laws concerning temporal and spatial aspects could be observed up to a certain size of population.
description: 7 pages sociophysics, including all figs., for Int. J. Mod. Phys. C 16, issue 4
Pituitary adenoma classification: Tools to improve the current system
Creators: name: McDonald, William
Publisher: name: Free Neuropathology
Year: 2024
Subjects: Pituitary
Classification
Machine learning
Statistical learning

description: The World Health Organization classification of pituitary tumors provides a framework for pathologists and researchers to classify pituitary adenomas. From the perspective of a practicing pathologist, this classification can be improved by pooling immunohistochemical data in a more standardized way, and by deliberately distinguishing features that assist in classification from those that do not. This article illustrates one general workflow to examine classification features consisting of immunohistochemical stains for anterior pituitary tumors, in order to promote debate and advance an evidence-based framework for classification.
description: Free Neuropathology, Bd. 5 (2024)
Effect of the troposphere on surface neutron counter measurements
Creators: name: Aplin, K. L.
name: Harrison, R. G.
name: Bennett, A. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Geophysics (physics.geo-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Surface neutron counter data are often used as a proxy for atmospheric ionisation from cosmic rays in studies of extraterrestrial effects on climate. Neutron counter instrumentation was developed in the 1950s and relationships between neutron counts, ionisation and meteorological conditions were investigated thoroughly using the techniques available at the time; the analysis can now be extended using modern data. Whilst surface neutron counts are shown to be a good proxy for ionisation rate, the usual meteorological correction applied to surface neutron measurements, using surface atmospheric pressure, does not completely compensate for tropospheric effects on neutron data. Residual correlations remain between neutron counts, atmospheric pressure and geopotential height, obtained from meteorological reanalysis data. These correlations may be caused by variations in the height and temperature of the atmospheric layer at ~100hPa. This is where the primary cosmic rays interact with atmospheric air, producing a cascade of secondary ionising particles.
description: In press at Advances in Space Research
Changing mobility practices – can we learn from crises?
Creators: name: Cass, Noel
name: Marsden, Greg
name: Brown, Llinos
Publisher: name: Soziologie und Nachhaltigkeit
Year: 2024
Subjects: mobility practices
crises
changing practices
practice theories

description: Die moderne Gesellschaft und ihre Mobilitätssysteme sind auf komplexe Art und Weise miteinander verwoben. Materielle Infrastrukturen, Ressourcenflüsse und Artefakte interagieren mit den sozial ausdifferenzierten Systemen des Alltagslebens. Diese können als Bündel von Alltagspraktiken verstanden werden, wobei Alltagspraktiken selbst sozialen Mustern, Normen und Erwartungen unterliegen. Praxistheorien eröffnen eine konzeptionelle Perspektive auf die Muster geteilter und sozial geformter Verpflichtungen, Routinen und Lebensweisen. Aufgrund der komplexen Verwobenheit von Materialitäten, Zeitlichkeiten und Sozialverhältnissen zählen viele qualitativ unterschiedliche Ereignisse und Situationen als Krisen, Störungen oder Notfälle, die Mobilitätspraktiken beeinflussen sowie die mit ihnen in Raum und Zeit verbundenen Praktiken. Die Klimakrise, die Covid Pandemie und Krise der Lebenshaltungskosten sind gegenwärtige Beispiele, die vor diesem Hintergrund reflektiert werden können. Anhand des Beispiels der Veränderung von Mobilitätspraktiken und anderen Praktiken aufgrund der Covid-19 Pandemie stellen wir konzeptionelle Überlegungen zu einem praxistheoretischen Verständnis von des Wandels von (Mobilitäts-)praktiken an und werfen dabei drei kritische Punkte auf. Diese betreffen das Definieren und Sprechen von Krisen, den Wandel von Mobilitätspraktiken und die politische „Steuerung“ des Wandels von Praktiken. 


Modern society and its mobility systems interweave in complex ways. Material infrastructures, resource flows and devices interact with socially differentiated systems of everyday life. These are bundles of common everyday practices, themselves subject to social patterning, norms and expectations. Practice theories provide a way of thinking about this level of patterning, of shared and socially shaped obligations, routines, and ways of living. Because of this complexity of interweaving of materiality, temporality, spatiality and sociality, many qualitatively different events and situations can count as crises, as disruptions or emergencies, which affect mobility practices and the practices they connect in time and space. The climate crisis, the Covid pandemic, and the cost-of-living crisis are contemporary examples on which we can reflect. We reflect on how mobility and other practices have changed in response to Covid as the basis of a conceptual reflection on practice theory’s understanding of mobility practices and practice change, and conclude with three critical perspectives. These are on defining and talking in terms of crises; on change in mobility practices; and on policy ‘steering’ of practice change.


(peer reviewed)
description: Soziologie und Nachhaltigkeit, Sonderband 3: Beschleunigter Wandel oder nachhaltige Nicht-Nachhaltigkeit?
XMM-Newton observation of 4U 1543-475: the X-ray spectrum of a stellar-mass black-hole at low luminosity
Creators: name: La Palombara, Nicola
name: Mereghetti, Sandro
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the results of an observation of the galactic black-hole binary 4U 1543-475 performed by XMM-Newton on 2002 August 18, about two months after the start of an outburst detected by Rossi-XTE. Despite the relatively low flux of the source, corresponding to a luminosity Lx ~ 4x10^34 erg/s (i.e. about 10^(-5) times the Eddington luminosity), we could obtain a good quality spectrum thanks to the high throughput of the XMM-Newton EPIC instrument. The spectrum is well fit by a power law with photon index 1.9-2 without any evidence for iron emission lines or for thermal emission from an accretion disk. We could estimate an upper-limit on the disk bolometric luminosity as a function of the colour temperature: it is always lower than ~10^33 erg/s, i.e. less than 10 % of the source total luminosity. Finally, we evaluated that the disk colour temperature must satisy the condition kTcol<0.25 keV in order to obtain an acceptable value for the disk inner radius.
description: 4 pages, 3 figures, 2 tables. Accepted for publication by Astronomy & Astrophysics Letters
Leveraging_Models_to_Reduce_Test_Cases_in_Software_Repositories_MSR2021 .pdf
Creators: name: Gharachorlu, Golnaz
name: Sumner, Nick
Publisher: name: figshare
Year: 2021
Subjects: Computer Engineering

description: Given a failing test case, test case reduction yields a smaller test case that reproduces the failure. This process can be time consuming due to repeated trial and error with smaller test cases. Current techniques speed up reduction byonly exploring syntactically valid candidates, butthey still spend significant effort on semanticallyinvalid candidates. In this paper, we propose amodel-guided approach to speed up test case reduction. The approach trains a model of semanticproperties driven by syntactic test case properties.By using this model, we can skip testing evensyntactically valid test case candidates that are unlikely to succeed. We evaluate this model-guidedreduction on a suite of 14 large fuzzer-generatedC test cases from the bug repositories of two well-known C compilers, GCC and Clang. Our resultsshow that with an average precision of 77%, we candecrease the number of removal trials by 14% to61%. We observe a 30% geomean improvement inreduction time over the state of the art techniquewhile preserving similar reduction power.
High-Performance Computing for Efficient Transaction Processing: A Comparative Study of Parallel and Sequential Execution Using SQLite
Creators: name: Balaji, C V Roshan
name: Kanapathy, Shaman
name: Raj, V Pritham
name: Kumar, N Nithish
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 460607
subject: High performance computing
classificationCode: 460401
subject: Cryptography

description: This study examines the influence of high-performance computing on transaction processing by contrasting parallel and sequential execution within an SQLite database setting. A simulation system was developed using Python's multiprocessing to manage 1,000 user transactions, with outcomes saved in SQLite. Performance indicators such as execution time, successful transaction rate, and efficiency were assessed to gauge the benefits of employing parallel processing over sequential approaches. Our findings reveal that parallel execution decreases processing duration, boosts throughput, and enhances efficiency, offering valuable insights for optimizing transaction-heavy systems in high-performance computing environments.
Fluctuation spectrum of quasispherical membranes with force-dipole activity
Creators: name: Lomholt, Michael A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The fluctuation spectrum of a quasi-spherical vesicle with active membrane proteins is calculated. The activity of the proteins is modeled as the proteins pushing on their surroundings giving rise to non-local force distributions. Both the contributions from the thermal fluctuations of the active protein densities and the temporal noise in the individual active force distributions of the proteins are taken into account. The noise in the individual force distributions is found to become significant at short wavelengths.
description: 9 pages, 2 figures, minor changes and additions
Incremental Text to Speech for Neural Sequence-to-Sequence Models using Reinforcement Learning
Creators: name: Mohan, Devang S Ram
name: Lenain, Raphael
name: Foglianti, Lorenzo
name: Teh, Tian Huey
name: Staib, Marlene
name: Torresquintero, Alexandra
name: Gao, Jiameng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Machine Learning (cs.LG)
subject: Sound (cs.SD)
subject: Machine Learning (stat.ML)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Modern approaches to text to speech require the entire input character sequence to be processed before any audio is synthesised. This latency limits the suitability of such models for time-sensitive tasks like simultaneous interpretation. Interleaving the action of reading a character with that of synthesising audio reduces this latency. However, the order of this sequence of interleaved actions varies across sentences, which raises the question of how the actions should be chosen. We propose a reinforcement learning based framework to train an agent to make this decision. We compare our performance against that of deterministic, rule-based systems. Our results demonstrate that our agent successfully balances the trade-off between the latency of audio generation and the quality of synthesised audio. More broadly, we show that neural sequence-to-sequence models can be adapted to run in an incremental manner.
description: To be published in Interspeech 2020. 5 pages, 4 figures
Beschleunigter Wandel oder nachhaltige Nicht-Nachhaltigkeit von Mobilitätspraktiken angesichts multipler Krisen?
Creators: name: Ruhrort, Lisa
name: Mock, Mirijam
name: Sonnberger, Marco
Publisher: name: Soziologie und Nachhaltigkeit
Year: 2024
Subjects: Nicht-Nachhaltigkeit
Mobilitätspraktiken
multiple Krisen
Transformation

description: Einleitung zum Sonderband
description: Soziologie und Nachhaltigkeit, Sonderband 3: Beschleunigter Wandel oder nachhaltige Nicht-Nachhaltigkeit?
Real Space Orthogonal Projector-Augmented-Wave Method
Creators: name: Li, Wenfei
name: Neuhauser, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The projector augmented wave (PAW) method of Blöchl makes smooth but non-orthogonal orbitals. Here we show how to make PAW orthogonal, using a cheap transformation of the wave-functions. We show that the resulting Orthogonal PAW (OPAW), applied for DFT, reproduces (for a large variety of solids) band gaps from the ABINIT package. OPAW combines the underlying orthogonality of norm-conserving potentials with the large grid spacings and small spectral range in PAW. The OPAW framework can also be combined with other electronic structure theory methods.
description: 8 pages, 2 figures, 2 tables
Phase Shift in Skyrmion Crystals
Creators: name: Hayami, Satoru
name: Okubo, Tsuyoshi
name: Motome, Yukitoshi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The skyrmion crystal is a periodic array of a swirling topological spin texture. Since it is regarded as an interference pattern by multiple helical spin density waves, the texture changes with the relative phases among the constituent waves. Although the phase degree of freedom is relevant to not only magnetism but also transport properties, its effect has not been elucidated thus far. We here theoretically show that a phase shift can occur in the skyrmion crystals to stabilize tetra-axial vortex crystals with staggered scalar spin chirality. This leads to spontaneous breaking of the lattice symmetry, which results in nonreciprocal transport phenomena even without the relativistic spin-orbit coupling. We show that such a phase shift is driven by long-range chirality interactions or thermal fluctuations in spin-charge coupled systems.
description: 5 pages, 4 figures
Precision Measurements of the Charged Pion, Charged Kaon, and Proton Electromagnetic Form Factors at s = 13.48 GeV^2
Creators: name: Zweber, Peter
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Using 20.7 pb^-1 of e+e- annihilation data taken at sqrt{s} = 3.671 GeV with the CLEO-c detector, precision measurements of the electromagnetic form factors of the charged pion, charged kaon, and proton have been made for timelike momentum transfers of |Q^2| = 13.48 GeV^2 by the reaction e+e- -> h+h-. The measurements are the first ever with identified pions and kaons of |Q^2| > 4 GeV^2, with the results |F_pi(13.48 GeV^2)| = 0.075 +- 0.008(stat) +- 0.005(syst) and |F_K(13.48 GeV^2)| = 0.063 +- 0.004(stat) +- 0.001(syst). The result for the proton, assuming |G^p_E| = |G^p_M|, is |G^p_M(13.48 GeV^2)| = 0.014 +- 0.002(stat) +- 0.001(syst), which is in agreement with earlier results.
description: 3 pages, 2 figures, contributed to PANIC05
Wege im pandemischen Alltag
Creators: name: Manderscheid, Katharina
name: Krieger, Franziska
name: Zimmer, Fabian
Publisher: name: Soziologie und Nachhaltigkeit
Year: 2024
Subjects: Praxistheorie
Verkehrmittelnutzung
Alltag
Disruption
sozialer Wandel

description: Zu den eindrücklichsten kollektiven Erfahrungen vor allem zu Beginn der Pandemie gehörte sicherlich der drastische Rückgang des motorisierten Verkehrs. Die Wege des Alltags konzentrierten sich auf das Umfeld der eigenen Wohnung und wurden häufiger mit dem Fahrrad oder zu Fuß zurückgelegt. In Bezug auf den Alltagsverkehr wurden an dieser Stelle mindestens zwei Aspekte sichtbar, die zu wenig in die Verkehrspolitik einbezogen werden. Dies ist erstens die Beobachtung, dass Wege und Verkehr eng mit sozialen Beziehungen und Praktiken der Alltagsorganisation verknüpft sind. Und zweitens, dass Unterwegssein und damit auch die Art des Verkehrsmittels nicht nur in Geschwindigkeit und Kosten gemessen wird, sondern kontext- und praktikenspezifisch unterschiedliche Bedeutungen, Eigenlogiken und inhärente Wertigkeiten hat. Diese beiden Aspekte werden vor dem Hintergrund von praxistheoretischen Überlegungen zu Wandel und Veränderungen anhand von qualitativem Interviewmaterial zu Alltag und Wegen in der Pandemie herausgearbeitet.


One of the most impressive collective experiences, especially at the beginning of the pandemic, was certainly the drastic reduction in motorised transport. Everyday trips were concentrated in the vicinity of one‘s own home and were more frequently made by bicycle or on foot. With regard to everyday transport, at least two aspects became visible at this point that are too little included in transport policy. Firstly, the observation that routes and transport are closely linked to social relationships and practices of everyday organisation. And secondly, that being on the move and thus the type of transport is not only measured in speed and costs, but has context- and practice-specific different meanings, inherent logics and inherent valences. These two aspects are elaborated against the background of practice-theoretical considerations on change and transformation using qualitative interview material on everyday life and ways in the pandemic.


(peer reviewed)
description: Soziologie und Nachhaltigkeit, Sonderband 3: Beschleunigter Wandel oder nachhaltige Nicht-Nachhaltigkeit?
Liouvillian exceptional points of any order in dissipative linear bosonic systems: Coherence functions and switching between ${\cal PT}$ and anti-${\cal PT}$ symmetries
Creators: name: Arkhipov, Ievgen I.
name: Miranowicz, Adam
name: Minganti, Fabrizio
name: Nori, Franco
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Usually, when investigating exceptional points (EPs) of an open Markovian bosonic system, one deals with spectral degeneracies of a non-Hermitian Hamiltonian (NHH), which can correctly describe the system dynamics only in the semiclassical regime. A recently proposed quantum Liouvillian framework enables to completely determine the dynamical properties of such systems and their EPs (referred to as Liouvillian EPs, or LEPs) in the quantum regime by taking into account the effects of quantum jumps, which are ignored in the NHH formalism. Moreover, the symmetry and eigenfrequency spectrum of the NHH become a part of much larger Liouvillian eigenspace. As such, the EPs of an NHH form a subspace of the LEPs. Here we show that once an NHH of a dissipative linear bosonic system exhibits an EP of a certain finite order $n$, it immediately implies that the corresponding LEP can become of any higher order $m\geq n$, defined in the infinite Hilbert space. Most importantly, these higher-order LEPs can be identified by the coherence and spectral functions at the steady state. The coherence functions can offer a convenient tool to probe extreme system sensitivity to external perturbations in the vicinity of higher-order LEPs. As an example, we study a linear bosonic system of a bimodal cavity with incoherent mode coupling to reveal its higher-order LEPs; particularly, of second and third order via first- and second-order coherence functions, respectively. Accordingly, these LEPs can be additionally revealed by squared and cubic Lorentzian spectral lineshapes in the power and intensity-fluctuation spectra. Moreover, we demonstrate that these EPs can also be associated with spontaneous parity-time (${\cal PT}$) and anti-${\cal PT}$-symmetry breaking in the system studied.
description: 15 pages, 4 figures
Electromagnetic field theory for invariant beams using scalar potentials
Creators: name: Rondon, Irving
name: Soto-Eguibar, F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a description of the electromagnetic field for propagation invariant beams using scalar potentials. Fundamental dynamical quantities are obtained: the energy density, the Poynting vector and the Maxwell stress tensor. As an example, all these quantities are explicitly calculated for the Bessel beams, which are the invariant beams with circular cylindrical symmetry.
description: 13 pages
The alpha-effect and current helicity for fast sheared rotators
Creators: name: Pipin, V. V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We explore the alpha-effect and the small-scale current helicity, for the case of weakly compressible magnetically driven turbulence that is subjected to the differential rotation. No restriction is applied to the amplitude of angular velocity, i.e., the derivations presented are valid for an arbitrary Coriolis number, though the differential rotation itself is assumed to be weak. The expressions obtained are used to explore the possible distributions of alpha-effect and current helicity in convection zones (CZ) of the solar-type stars. The implications of the obtained results to the mean-field dynamo models are discussed.
description: 20 pages, 6 figures
Evidence of attraction between charge-carriers in a doped Mott insulator
Creators: name: Blomquist, Emil
name: Carlström, Johan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Recent progress in optically trapped ultracold atomic gases is now making it possible to access microscopic observables in doped Mott insulators, which are the parent states of high-temperature superconductors. This makes it possible to address longstanding questions about the temperature scales at which attraction between charge carriers are present, and their mechanism. Controllable theoretical results for this problem are not available at low temperature due to the sign problem. In this work, we employ worm-algorithm Monte Carlo to obtain completely unbiased results for two charge carriers in a Mott insulator. Our method gives access to lower temperatures than what is currently possible in experiments, and provides evidence for attraction between dopants at a temperature scale that is now feasible in ultracold atomic systems. We also report on spin-correlations in the presence of charge carriers, which are directly comparable to experiments.
description: 6 pages, 5 figures + Supplementary information
Mobilitätsplattformen in Deutschland
Creators: name: Piétron, Dominik
Publisher: name: Soziologie und Nachhaltigkeit
Year: 2024
Subjects: Plattformen
Intermodalität
Steuerung
Wettbewerb
Daseinsvorsorge

description: Dieser Beitrag untersucht die Verbreitung von Mobility-as-a-Service-Plattformen in Deutschland und fragt nach den Voraussetzungen einer digital gestützten ökologischen Mobilitätswende. Insgesamt werden im Rahmen einer Feldanalyse 35 MaaS-Plattformen im deutschen Personennahverkehr identifiziert – neun überregionale, privatwirtschaftliche Plattformen und 26 öffentliche Plattformen auf kommunaler Ebene. Während private MaaS-Plattformen ein werbefinanziertes Geschäftsmodell verfolgen und vorrangig hochpreisige Fahrten über Auto- und Elektromobilität vermitteln, legen öffentliche Plattformanbieter den Fokus tendenziell auf einen umweltfreundlichen Mobilitätsmix. Unter diesen Bedingungen sind zwei Risikofaktoren für die ökologische Mobilitätswende zu beobachten – einerseits eine Hierarchisierung des Personennahverkehrs durch finanzialisierte Privatunternehmen, andererseits eine proprietäre Fragmentierung mit künstlicher Verknappung nachhaltiger Verkehrsoptionen. Um dies zu verhindern, sollten öffentliche Akteure die Entwicklung öffentlicher Mobilitätsplattformen stärker vergemeinschaften und die überregionale Integration von Mobilitätsdiensten mit ökologischer Ausrichtung vorantreiben.


This paper analyzes the spread of Mobility-as-a-Service platforms in Germany and investigates the prerequisites for a digitally supported ecological mobility transition. A field analysis identifies a total of 35 MaaS platforms in German local public transport – nine supraregional, private-sector platforms and 26 public platforms at the municipal level. While private MaaS platforms employ an advertising business model and primarily broker high-priced trips via car and electric mobility, public platform providers tend to focus on an environmentally friendly mobility mix. Under these conditions, two risk factors for the environmental mobility transition can be observed - on the one hand, a hierarchization of local public transport by financialized private companies, and on the other hand, a proprietary fragmentation causing artificial shortage of sustainable transport options. To prevent this, public actors should pool the development of public mobility platforms and foster the cross-regional integration of mobility services with an ecological orientation.


(peer reviewed)
description: Soziologie und Nachhaltigkeit, Sonderband 3: Beschleunigter Wandel oder nachhaltige Nicht-Nachhaltigkeit?
Die Heiligtümer des byzantinischen Jerusalem nach einer übersehenen Urkunde
Creators: name: Baumstark, Anton
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 5 (1905): Oriens christianus, Band 5
temporalities of shared mobility practices from an environmental perspective
Creators: name: Mock, Mirijam
Publisher: name: Soziologie und Nachhaltigkeit
Year: 2024
Subjects: shared mobility
sustainability
practice theories
carsharing
time

description: Um verheerende Folgen des Klimawandels zu verhindern, ist eine Reduktion der Privat-PKW Nutzung unbedingt erforderlich. Allerdings ist diese Mobilitätsform sehr wandlungsresistent. Dies ist unter anderem auf ihre nahtlose Integration in die zeitliche Organisation des Alltagslebens zurückzuführen ist: Sie ist schnell, flexibel, jederzeit und oft sofort verfügbar. Ermöglicht wird dies durch eine autozentrierte Raumplanung und Gesetzgebung. Unter diesen Bedingungen ist es für umweltfreundlichere Mobilitätspraktiken wie bestimmte Arten von shared-mobility schwierig, sich zu verbreiten. Das im Artikel entwickelte praxistheoretisches Verständnis von Zeitlichkeiten hilft die Wandlungsresistenz der Privat-PKW Nutzung zu verstehen. Darüber hinaus erklärt es auch warum sich bisher hauptsächlich wenig umweltfreundliche Arten von shared mobility (business-to-consumer free-floating carsharing) und nicht umweltfreundlichere wie peer-to-peer carsharing oder mobility-as-a-service verbreiten konnten. Der Artikel kommt zum Schluss, dass eine Exnovation des bestehen autozentrierten Mobilitätssystems für eine Mobilitätswende unverzichtbar ist.


To prevent devastating consequences of climate change, a reduction in private car use is essential. However, this form of mobility is highly resistant to change. This resistance is attributed, in part, to its seamless integration into the temporal organization of daily life: it is fast, flexible, available at any time, and often instantly accessible. This is facilitated by car-centred urban planning and legislation. Under these conditions, it is challenging for more environmentally friendly mobility practices, such as certain types of shared mobility, to proliferate. The practice theoretical understanding of temporalities developed in the article helps to comprehend the resistance to change in private car use. Furthermore, it explains why predominantly less environmentally friendly forms of shared mobility (business-to-consumer free-floating carsharing) have expanded, while more environmentally friendly options like peer-to-peer carsharing or mobility-as-a-service have struggled. The article concludes that an exnovation of the existing car-centred mobility system is indispensable for a transformation of the mobility system. 


(peer reviewed)
description: Soziologie und Nachhaltigkeit, Sonderband 3: Beschleunigter Wandel oder nachhaltige Nicht-Nachhaltigkeit?
Hydrologic Simulations of the Maquoketa River Watershed Using SWAT
Creators: name: Jha, Manoj K.
name: Jha, Manoj K.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Environmental Economics and Policy
subject: calibration and validation
subject: hydrologic simulation
subject: sensitivity analysis
subject: SWAT.

description: This paper describes the application of the Soil and Water Assessment Tool (SWAT) model to the Maquoketa River watershed, located in northeast Iowa. The inputs to the model were obtained from the Environmental Protection Agency’s geographic information/database system called Better Assessment Science Integrating Point and Nonpoint Sources (BASINS). Climatic data from six weather stations located in and around the watershed, and measured streamflow data from a U.S. Geological Survey gage station at the watershed outlet were used in the sensitivity analysis of SWAT model parameters as well as its calibration and validation for watershed hydrology and streamflow. A sensitivity analysis was performed using an influence coefficient method to evaluate surface runoff and baseflow variations in response to changes in model input hydrologic parameters. The curve number, evaporation compensation factor, and soil available water capacity were found to be the most sensitive parameters among eight selected parameters when applying SWAT to the Maquoketa River watershed. Model calibration, facilitated by the sensitivity analysis, was performed for the period 1988 through 1993, and validation was performed for 1982 through 1987. The model performance was evaluated by well-established statistical methods and was found to explain at least 86% and 69% of the variability in the measured streamflow data for the calibration and validation periods, respectively. This initial hydrologic modeling analysis will facilitate future applications of SWAT to the Maquoketa River watershed for various watershed analyses, including water quality.
Additional file 2 of Administrative prevalence and incidence, characteristics and prescription patterns of patients with migraine in Germany: a retrospective claims data analysis
Creators: name: Roessler, Tatjana
name: Juergen Zschocke
name: Roehrig, Anne
name: Friedrichs, Michael
name: Friedel, Heiko
name: Katsarava, Zaza
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Pharmacology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 2: Table S1. Summary of acute, emergency and prophylactic medications in the German Company Sickness Fund Databasea
Comparison of the Planck 2018 CMB polarization maps in the BICEP2/Keck region
Creators: name: Liu, Hao
name: Creswell, James
name: Naselsky, Pavel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We examine the statistical properties of polarization maps from Planck 2018 within the patch of sky observed by the BICEP2/Keck experiment using the one point distribution function (1PDF), skewness, and kurtosis statistics. Our analysis is performed for the Q and U Stokes parameters and for the corresponding E- and B-modes of the CMB signals. We extend our analysis by studying the correlations between CMB polarization maps and residual maps (the difference between the full signal and the CMB map) for the frequency range of 100--217 GHz with both the Q/U and E/B approaches. Although all the CMB maps reveal almost Gaussian statistical properties for Q/U and E/B domains, we have detected very significant anomalies for cross-correlations with residuals at 100 GHz at the level of $3.7σ$ for the Commander map and $5.2σ$ for NILC, for both the Q and U parameters. Using the NILC--Commander difference, which does not contain a cosmological signal, we find a sub-dominant non-Gaussian component in Q skewness and kurtosis at the level of $4.3σ$ and $10σ$, respectively. For the B-mode we have found a very high level of cross-correlation (0.63--0.69) between the NILC/Commander maps and the 143 GHz total signal, which cannot be associated with the cosmological component. These strong deviations suggest that remnants of foregrounds, systematic effects, and component separation exist in the 2018 Planck CMB polarization maps in the BICEP2 sky area, which is far away from the Galactic plane. Our analysis also demonstrates the preferability of the Q/U domain over E/B for determination of the statistical properties of the derived CMB signals, due to non-locality of the transition Q/U $\rightarrow$ E/B.
description: 14 pages, 6 figures, 7 tables
The ground state in a spin-one color superconductor
Creators: name: Schmitt, Andreas
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Color superconductors in which quarks of the same flavor form Cooper pairs are investigated. These Cooper pairs carry total spin one. A systematic group-theoretical classification of possible phases in a spin-one color superconductor is presented, revealing parallels and differences to the theory of superfluid $^3$He. General expressions for the gap parameter, the critical temperature, and the pressure are derived and evaluated for several spin-one phases, with special emphasis on the angular structure of the gap equation. It is shown that the (transverse) color-spin-locked phase is expected to be the ground state.
description: 36 pages, 3 figures, error corrected in App. C, conclusion changed
Error correcting codes for adiabatic quantum computation
Creators: name: Jordan, Stephen P.
name: Farhi, Edward
name: Shor, Peter W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recently, there has been growing interest in using adiabatic quantum computation as an architecture for experimentally realizable quantum computers. One of the reasons for this is the idea that the energy gap should provide some inherent resistance to noise. It is now known that universal quantum computation can be achieved adiabatically using 2-local Hamiltonians. The energy gap in these Hamiltonians scales as an inverse polynomial in the problem size. Here we present stabilizer codes which can be used to produce a constant energy gap against 1-local and 2-local noise. The corresponding fault-tolerant universal Hamiltonians are 4-local and 6-local respectively, which is the optimal result achievable within this framework.
description: Errors corrected
Shifts in Eastern German Production Structure Under Market Forces
Creators: name: Paarlberg, Philip L.
name: Paarlberg, Philip L.
Publisher: name: Unknown
Year: 1993
Subjects: International Relations/Trade

description: The paper is organized into three major sections. The first section considers agricultural production prior to German reunification in 1990. It looks at the agricultural production structure in the region prior to the division of Germany in 1945 as well as the patterns which arose under the communist government. The second section starts with the 1989 situation and then discusses the initial adjustments seen as market forces are introduced -- 1990 and 1991. The third section builds upon this base to speculate on how the production structure will unfold in the future.
Between immediacy and reification : quotidian pedagogy, narrative, and recovery of language and meaning in nature
Creators: name: Feng, Francis Hueitsu
Publisher: name: University of British Columbia
Year: 2009

description: As an open pedagogical invitation, my dissertation is a contribution as critical interpretive ontology with the promise of hope based upon my father's Dao Li, or principled living as a quest for the good. An embodied sense of narrative as unity of life interweaves within my exploratory work bringing together virtue, praxis and narrative. Arising out of an existential angst in the passing of my father and in my attempts to grapple with the questions he posed, I wrote autopoietically " from the middle" out of life within the space between life, topic, theory and method. I was motivated by my deep concern that, as educators, we are caught within a cycle of the reification of life making us complicit in the ecological crisis of modernity. Situated within the conceptual genre of educational research, my work interprets modern conceptions of nature as deeply flawed, wherein the loss of nature from the discourse of modernity is implicated in the general loss of meaning and sense of loss of the sacred. Within this context, I interpret reification in an expanded Lukacsian sense, to be the supreme danger to life, even over capital, when modern discourse looms large, threatening to preclude all other ways of being. To recover a language and meaning in nature, I draw from the hermeneutical-phenomenological tradition, casting my work as onto-linguistic in immediacy within what I call quotidian pedagogy. My exegesis is located in the dialectical flux between reification and immediacy. Within this flux, I postulate three interventionist movements that I have labelled appropriately as deconstructive, topographic, and immediate, around a circuit of nature model. This heuristic traces the pathway from construction to waste and sedimentation, through three movements that collectively: 1) recover nature through tracing the loss of nature from the discourse; 2) remap modern discourse to include nature; 3) experience and deconstruct the present in immediacy over abstraction. Pedagogically, I feature interpretations of the everyday and lived curriculum over the planned curriculum. I cast my contribution to immediacy within these lessons of the immediate. Moreover, I argue that it is in these spaces of the immediate as they are occurring before us that we find the possibility for hope and escape from the circularity of reification.
Additional file 3 of Administrative prevalence and incidence, characteristics and prescription patterns of patients with migraine in Germany: a retrospective claims data analysis
Creators: name: Roessler, Tatjana
name: Juergen Zschocke
name: Roehrig, Anne
name: Friedrichs, Michael
name: Friedel, Heiko
name: Katsarava, Zaza
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Pharmacology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 3: Table S2. Prescribed acute medications for patients who had been diagnosed with complicated migraine (G43.3, including chronic migraine) in the German Company Sickness Fund Database 2016 (N = 2458)
Soliton ratchets in homogeneous nonlinear Klein-Gordon systems
Creators: name: Morales-Molina, Luis
name: Quintero, Niurka R.
name: Mertens, Franz G.
name: Sanchez, Angel
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Mathematical Physics (math-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We study in detail the ratchet-like dynamics of topological solitons in homogeneous nonlinear Klein-Gordon systems driven by a bi-harmonic force. By using a collective coordinate approach with two degrees of freedom, namely the center of the soliton, $X(t)$, and its width, $l(t)$, we show, first, that energy is inhomogeneously pumped into the system, generating as result a directed motion; and, second, that the breaking of the time shift symmetry gives rise to a resonance mechanism that takes place whenever the width $l(t)$ oscillates with at least one frequency of the external ac force. In addition, we show that for the appearance of soliton ratchets, it is also necesary to break the time-reversal symmetry. We analyze in detail the effects of dissipation in the system, calculating the average velocity of the soliton as a function of the ac force and the damping. We find current reversal phenomena depending on the parameter choice and discuss the important role played by the phases of the ac force. Our analytical calculations are confirmed by numerical simulations of the full partial differential equations of the sine-Gordon and $ϕ^4$ systems, which are seen to exhibit the same qualitative behavior. Our results are in agreement with recent experimental work on dissipation induced symmetry breaking.
description: Minor corrections, several references added, accepted for publication in Chaos
Additional file 5 of Systematic review of the registered clinical trials for coronavirus disease 2019 (COVID-19)
Creators: name: Zhu, Rui-Fang
name: Gao, Yu-Lu
name: Sue-Ho Robert
name: Gao, Jin-Ping
name: Yang, Shi-Gui
name: Chang-Tai Zhu
Publisher: name: figshare
Year: 2020
Subjects: Medicine
Pharmacology
Biotechnology
Cancer
Science Policy

description: Additional file 5. The methodology quality of the observational trials using Newcastle-Ottawa scale.
The search for electrocatalysis of carbonyl reductions on tin oxide semiconductor electrodes covalently modified with NAD⁺ coenzyme analogs
Creators: name: Seguin, Russell Joseph
Publisher: name: The University of Texas at Austin
Year: 1984
Subjects: subject: Electrocatalysis
subject: Carbonyl reductions
subject: Semiconductor electrodes
subject: NAD⁺ analogs
subject: Coenzymes
subject: Halides
subject: Electronic properties
subject: Nuclear Magnetic Resonance Spectrometry
subject: Cyclic voltammetry
subject: Quaternized nicotinamides
subject: Electrolytic reduction
subject: Stannic oxide
subject: Carbonyl compounds
subject: Electrocatalysis

description: Several N-alkyl-3-carboxamidopyridinyl halides were prepared to serve as NAD⁺ coenzyme model compounds. By varying the electron-withdrawing properties of the alkyl moiety, the electronic properties of these quaternized nicotinamides (i.e., ring current and reduction potential) could be manipulated, as was observed by Nuclear Magnetic Resonance Spectrometry and Cyclic Voltammetry (CV). Several propyltriethoxysilane derivatives were also prepared through linkage to the pyridine's amide moiety. A series of the quaternized nicotinamides were covalently attached to the surface of tin oxide semiconductor electrodes by several silanization methods. The surface coverage was confirmed by X-Ray Photoelectron Spectroscopy and by the appearance of the corresponding CV reduction wave on the electrode's surface. The reduction of several electron deficient carbonyl compounds was investigated upon the NAD⁺ analog electrodes; however, no significant catalysis of the reductions by the enzyme mimic was observed