cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Transformation of Civic and Citizenship Education: Challenges to Educational Governance, Agency and Research - An Introduction
Creators: name: Hedtke, Reinhold
name: Proeschel, Claude
name: Szukala, Andrea
Publisher: name: sowi-online e.V., Bielefeld
Year: 2018

description: JSSE - Journal of Social Science Education, 4-2017 Constructing the Legitimate Knowledge
Development of the structural layout of the platform of the system of angular orientation and stabilization of the spacecraft
Creators: name: Tkachov, Yurii
name: Pakhvytsevych, А. L.
Publisher: name: figshare
Year: 2022
Subjects: subject: Aerospace Engineering
subject: FOS: Mechanical engineering
subject: 90104 Aircraft Performance and Flight Control Systems

description: During the project, a platform for the active orientation and stabilization system of a microsatellite (microsatellites have a total mass of 10 to 100 kg) was developed, which consists of a base, three reaction wheels, three electromagnets, a solar sensor and a star sensor on a bracket.
General formulas for adiabatic invariants in nearly-periodic Hamiltonian systems
Creators: name: Burby, J. W.
name: Squire, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: While it is well-known that every nearly-periodic Hamiltonian system possesses an adiabatic invariant, extant methods for computing terms in the adiabatic invariant series are inefficient. The most popular method involves the heavy intermediate calculation of a non-unique near-identity coordinate transformation, even though the adiabatic invariant itself is a uniquely-defined scalar. A less well-known method, developed by S. Omohundro, avoids calculating intermediate sequences of coordinate transformations but is also inefficient as it involves its own sequence of complex intermediate calculations. In order to improve the efficiency of future calculations of adiabatic invariants, we derive generally-applicable, readily computable formulas for the first several terms in the adiabatic invariant series. To demonstrate the utility of these formulas, we apply them to charged particle dynamics in a strong magnetic field and magnetic field-line dynamics when the field lines are nearly closed.
description: 32 pages, submitted to JPP special issue on Hamiltonian systems in plasma physics
Ferroelectric, quantum paraelectric or paraelectric? Calculating the evolution from BaTiO$_3$ to SrTiO$_3$ to KTaO$_3$ using a single-particle quantum-mechanical description of the ions
Creators: name: Esswein, Tobias
name: Spaldin, Nicola A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present an inexpensive first-principles approach for describing quantum paraelectricity that combines density functional theory (DFT) treatment of the electronic subsystem with quantum mechanical treatment of the ions through solution of the single-particle Schrödinger equation with the DFT-calculated potential. Using BaTiO$_3$, SrTiO$_3$ and KTaO$_3$ as model systems, we show that the approach can straightforwardly distinguish between ferroelectric, paraelectric and quantum paraelectric materials, based on simple quantities extracted from standard density functional and density functional perturbation theories. We calculate the influence of isotope substitution and strain on the quantum paraelectric behavior, and find that, while complete replacement of oxygen-16 by oxygen-18 has a surprisingly small effect, experimentally accessible strains can induce large changes. Finally, we collect the various choices for the phonon mass that have been introduced in the literature. We identify those that are most physically meaningful by comparing with our results that avoid such a choice through the use of mass-weighted coordinates.
Perturbing an axisymmetric magnetic equilibrium to obtain a quasi-axisymmetric stellarator
Creators: name: Plunk, G. G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: It is demonstrated that finite-pressure, approximately quasi-axisymmetric stellarator equilibria can be directly constructed (without numerical optimization) via perturbations of given axisymmetric equilibria. The size of such perturbations is measured in two ways, via the fractional external rotation and, alternatively, via the relative magnetic field strength, i.e. the average size of the perturbed magnetic field, divided by the unperturbed field strength. It is found that significant fractional external rotational transform can be generated by quasi-axisymmetric perturbations, with a similar value of the relative field strength, despite the fact that the former scales more weakly with the perturbation size. High mode number perturbations are identified as a candidate for generating such transform with local current distributions. Implications for the development of a general non-perturbative solver for optimal stellarator equilibria is discussed.
Stability and evolution of electromagnetic solitons in relativistic degenerate laser plasmas
Creators: name: Roy, Sima
name: Misra, A. P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The dynamical behaviors of electromagnetic (EM) solitons formed due to nonlinear interaction of linearly polarized intense laser light and relativistic degenerate plasmas are studied. In the slow motion approximation of relativistic dynamics, the evolution of weakly nonlinear EM envelope is described by the generalized nonlinear Schr{ö}dinger (GNLS) equation with local and nonlocal nonlinearities. Using the Vakhitov-Kolokolov criteria, the stability of an EM soliton solution of the GNLS equation is studied. Different stable and unstable regions are demonstrated with the effects of soliton velocity, soliton eigenfrequency, as well as the degeneracy parameter $R=p_{Fe}/m_ec$, where $p_{Fe}$ is the Fermi momentum and $m_e$ the electron mass, and $c$ is the speed of light in vacuum. It is found that the stability region shifts to an unstable one and is significantly reduced as one enters from the regimes of weakly relativistic $(R\ll1)$ to ultrarelativistic $(R\gg1)$ degeneracy of electrons. The analytically predicted results are in good agreement with the simulation results of the GNLS equation. It is shown that the standing EM soliton solutions are stable. However, the moving solitons can be stable or unstable depending on the values of soliton velocity, the eigenfrequency or the degeneracy parameter. The latter with strong degeneracy $(R>1)$ can eventually lead to soliton collapse.
description: 10 pages, 5 figures; Revised version to appear in J. Plasma Physics (2020)
Supplementary material from Ecological associations distribution modelling of marine plankton at global scale
Creators: name: Gaudin, Marinna
name: eveillard, damien
name: Chaffron, Samuel
Publisher: name: The Royal Society
Year: 2024
Subjects: classificationCode: 310299
subject: Bioinformatics and computational biology not elsewhere classified

description: ADM_suppl-materials_review.pdf
Amazon EC2 im Überblick
Creators: name: Ollesch, Julius
name: Schweim, Dirk
name: Aydemir, Michael
name: Ehrhardt, Maria
name: Hansch, Marcel
Publisher: name: e-Journal of Practical Business Research
Year: 2011
Subjects: managementScience

description: Best of WI08 (07/2011) : Hochschule für Wirtschaft und Recht Berlin, pages 1-14
The Random Feature Model for Input-Output Maps between Banach Spaces
Creators: name: Nelsen, Nicholas H.
name: Stuart, Andrew M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: Machine Learning (cs.LG)
subject: Computational Physics (physics.comp-ph)
subject: Machine Learning (stat.ML)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: 65D15, 65D40, 62M45, 35R60

description: Well known to the machine learning community, the random feature model is a parametric approximation to kernel interpolation or regression methods. It is typically used to approximate functions mapping a finite-dimensional input space to the real line. In this paper, we instead propose a methodology for use of the random feature model as a data-driven surrogate for operators that map an input Banach space to an output Banach space. Although the methodology is quite general, we consider operators defined by partial differential equations (PDEs); here, the inputs and outputs are themselves functions, with the input parameters being functions required to specify the problem, such as initial data or coefficients, and the outputs being solutions of the problem. Upon discretization, the model inherits several desirable attributes from this infinite-dimensional viewpoint, including mesh-invariant approximation error with respect to the true PDE solution map and the capability to be trained at one mesh resolution and then deployed at different mesh resolutions. We view the random feature model as a non-intrusive data-driven emulator, provide a mathematical framework for its interpretation, and demonstrate its ability to efficiently and accurately approximate the nonlinear parameter-to-solution maps of two prototypical PDEs arising in physical science and engineering applications: viscous Burgers' equation and a variable coefficient elliptic equation.
description: To appear in SIAM Journal on Scientific Computing; 32 pages, 9 figures
Brief an Christoph, Herzog von Württemberg
Creators: name: Hedio, Caspar
Publisher: name: [s.n.]
Year: 1515

description: von Caspar Hedio
description: Öffentliche Bibliothek der Universität Basel
description: Lateinisch
description: Verzeichnung=Description=Inventaire Januar 2018 HAN-Katalogisierungsregeln Vollständige Rekatalogisierung nach Standortverzeichnis, Briefkatalog und Original
title: Postglacial slip distribution along the Teton normal fault, northeastern Basin-and-Range Province (Wyoming, USA) derived from tectonically offset geomorphological features
Creators: name:  Hampel ,  Andrea
name:  Erdmann ,  Maria-Sophie
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2021

description: Along the eastern front of the Teton Range, northeastern Basin-and-Range Province, well-preserved fault scarps that formed across moraines, river terraces and other geomorphological features indicate that multiple earthquakes ruptured the range-bounding Teton normal fault after the Last Glacial Maximum (LGM). Here we use high-resolution digital elevation models derived from Lidar data to determine the vertical slip distribution along-strike of the Teton fault from 54 topographic profiles across tectonically offset geomorphological features along the entire Teton Range front. (Hampel et al., Geosphere, in press, https://doi.org/10.1130/GES02370.1). We find that offset LGM moraines and glacially striated surfaces show higher vertical displacements than younger fluvial terraces, which formed at valley exits upstream of LGM terminal moraines. Our results reveal that the tectonic offsets preserved in the faults scarps are post-LGM in age and that the postglacial slip distribution along-strike of the Teton fault is asymmetric with respect to the Teton Range center, with the maximum vertical displacements (27-23 m) being located north of Jenny Lake and along the southwestern shore of Jackson Lake. As indicated by earlier 3D numerical models, this asymmetric slip distribution results from postglacial unloading of the Teton fault, which experienced loading by the Yellowstone ice cap and valley glaciers in the Teton Range during the last glaciation.
Sonnenfleckenzeichnung Nr. 4697.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 22.09.1954, erstellt als Beobachtung im Projektionsverfahren Nr. 2764 von Karl Rapp in Locarno-Monti
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1954

description: Bleistiftzeichnung mit Tinte und Farbstift, erstellt für die Beobachtungen in Locarno-Monti auf dem Vordruck der Eidgenössischen Sternwarte Zürich. Instrument: Merz-Refraktor mit 13.5 cm Öffnung und 195 cm Brennweite, vereinzelt andere Instrumente wie Tel. 88x; Sonnenbild D = 25 cm. - Auf der Zeichnung wird zum Teil das Instrument vermerkt bzw. die Zählung der Beobachtungen im Projektionsverfahren fortgesetzt. Sporadisch sind Resultate mehrerer Aufnahmen pro Tag aufgelistet. Zuhanden der späteren statistischen Verarbeitung sind die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Zeichnung aus der Zeit der Beobachtertätigkeit von Ing. Karl Rapp als Privat-Astronom, die er seit den Neunzehnvierziger Jahren für die Eidgenössische Sternwarte Zürich ausführte. Aus den ersten zwei Jahren der freiwilligen Mitarbeit sind nur einzelne Stücke überliefert. Erst zwei Jahre später ist jeweils eine ergänzende Serie in Zürich aufbewahrt worden. Nochmals fünf Jahre später arbeitete Karl Rapp neu auf vertraglicher Basis weiter mit, bis schliesslich nach einem weiteren Jahrzehnt die permanente Beobachtungsstation in Locarno-Monti geschaffen wurde, welche an die langjährige Serie von Karl Rapp anknüpfte
Amazon EC2
Creators: name: Ollesch, Julius
name: Schweim, Dirk
name: Aydemir, Michael
name: Ehrhardt, Maria
name: Hansch, Marcel
Publisher: name: e-Journal of Practical Business Research
Year: 2011
Subjects: managementScience

description: Best of WI08 (07/2011) :Hochschule für Wirtschaft und Recht Berlin, pages 1-32
Entanglement in the family of division fields of elliptic curves with complex multiplication
Creators: name: Campagna, Francesco
name: Pengo, Riccardo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: Primary: 11G05, 14K22, 11G15, Secondary: 11S15, 11F80

description: For every elliptic curve $E$ which has complex multiplication (CM) and is defined over a number field $F$ containing the CM field $K$, we prove that the family of $p^{\infty}$-division fields of $E$, with $p \in \mathbb{N}$ prime, becomes linearly disjoint over $F$ after removing an explicit finite subfamily of fields. We then give a necessary condition for this finite subfamily to be entangled over $F$, which is always met when $F = K$. In this case, and under the further assumption that the elliptic curve $E$ is obtained as a base-change from $\mathbb{Q}$, we describe in detail the entanglement in the family of division fields of $E$.
description: 35 pages. Final version, to appear in Pacific Journal of Mathematics
Inspecting School Social Quality: Assessing and Improving School Effectiveness in the Social Domain
Creators: name: Dijkstra, Anne Bert
name: Daas, Remmert
name: De La Motte, Per Ingvar
name: Ehren, Melanie
Publisher: name: sowi-online e.V., Bielefeld
Year: 2018

description: Purpose: School inspection of school social quality is, in contrast to inspection in the cognitive domain, still in its early phase of development. While schools are shown to affect social outcomes, the interplay of mechanisms makes it difficult to isolate the effect of the school. This paper aims to evaluate different approaches to inspecting school social quality.

Methodology: Based on a school effectiveness model, we consider what aspects could be taken into consideration to evaluate school social quality.
Findings and implications: Using insights from inspection of cognitive outcomes, we present three ideal-type models of inspection, focusing on outcomes, school improvement, or process. There is as of yet no clear best approach to inspecting school social quality, as inspection of school quality can influence school performance in a range of ways. Implications of the described models and possible strengths and weaknesses are discussed.
description: JSSE - Journal of Social Science Education, 4-2017 Constructing the Legitimate Knowledge
Status of Lattice QCD Determination of Nucleon Form Factors and their Relevance for the Few-GeV Neutrino Program
Creators: name: Meyer, Aaron S.
name: Walker-Loud, André
name: Wilkinson, Callum
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Calculations of neutrino-nucleus cross sections begin with the neutrino-nucleon interaction, making the latter critically important to flagship neutrino oscillation experiments, despite limited measurements with poor statistics. Alternatively, lattice QCD (LQCD) can be used to determine these interactions from the Standard Model with quantifiable theoretical uncertainties. Recent LQCD results of $g_{\mathrm{A}}$ are in excellent agreement with data, and results for the (quasi-)elastic nucleon form factors with full uncertainty budgets are expected within a few years. We review the status of the field and LQCD results for the nucleon axial form factor, $F_{\mathrm{A}}(Q^2)$, a major source of uncertainty in modeling sub-GeV neutrino-nucleon interactions. Results from different LQCD calculations are consistent, but collectively disagree with existing models, with potential implications for current and future neutrino oscillation experiments. We describe a road map to solidify confidence in the LQCD results and discuss future calculations of more complicated processes, important to few-GeV neutrino oscillation experiments.
description: 29 pages, 5 figures. Review article for Ann. Rev. Nucl. Part., comments from the community are welcome. v2: consistent with version to be published in Annual Reviews of Nuclear and Particle Science with updates reflecting referee and community comments
A braid-like presentation of the integral Steinberg group of type $C_2$
Creators: name: Kassel, Christian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Group Theory (math.GR)
subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics
subject: 19C09, 20F05, 20F36 (Primary) 11E57, 20G30, 22E40 (Secondary)

description: We show that the Steinberg group $\text{St}(C_2,{\mathbb Z})$ associated with the Lie type $C_2$ and with integer coefficients can be realized as a quotient of the braid group $B_6$ by one relation. As an application we give a new braid-like presentation of the symplectic modular group $\text{Sp}_4({\mathbb Z})$.
description: 14 pages
Justification and Critique of Educational Reforms in Austria: How Teachers and Head Teachers (Re-)Frame New Governance
Creators: name: Graß, Doris
Publisher: name: sowi-online e.V., Bielefeld
Year: 2018

description: Purpose: Against the backdrop of a new governance regime of schools in Austria, which combines policies of decentralisation and school autonomy with an accountability program of standardised outcome control, this article explores how the so called “agents of change” – teachers and headteachers – take up these ideas and corresponding governance instruments and frame them on grounds of moral considerations. The aim is to present a theoretical framework for analysing – at the individual level – moments of critical evaluation and affirmative justification of more general political actions as well as of every day’s work practices.

Approach: Drawing on the concept of orders of justification and the pragmatist theory of conventions, a qualitative, interview-study with 15 teachers and head teachers in Austrian middle schools was conducted with the intention to discover a repertoire of educational conventions applied by the actors to criticise or justify reform-based decisions, expectations and subjective claims to work.
Findings: Besides presenting seven conventions, the article puts a special focus on arguments and corresponding conventions that – on one hand – characterise an economic perspective on schools and education (the market, industrial and flexible convention) and are thus important in deciding whether the new education governance regime is supported by an ‘economised’ constellation of frames that teachers and head teachers use to interpret their actions as well as others. One the other hand, the role of the civic convention receives special attention in relation to the aforementioned ones to include a further aspect into the diagnosis of an economisation of educational practices.
description: JSSE - Journal of Social Science Education, 4-2017 Constructing the Legitimate Knowledge
The Rise and Fall of Citizenship and Human Rights Education in Turkey
Creators: name: Sen, Abdulkerim
name: Starkey, Hugh
Publisher: name: sowi-online e.V., Bielefeld
Year: 2018

description: Purpose: This article shows the effects of competing political forces on citizenship education in Turkey during the period of commitment to European Union (EU) accession (1999-2005).

Methodology: It draws on textbooks, archival documents and interviews. Whilst Turkey had a history of civic education to promote a secular national ethos and identity, the post-Cold War democratisation movement encouraged the Turkish government in 1995 to attempt to internationalise civics by adding human rights themes.

Findings: This effort occurred at a time when the hegemony of the secular nationalist establishment was challenged by the electoral rise of an Islamist party. Although Citizenship and Human Rights course suited the purposes of the secular nationalist establishment, after the EU recognised Turkey as a candidate in 1999, a new political Islamist government, elected in 2002, chose first to align the course with its ideology and later decided to repeal it. By exploring the evolution of the curriculum in a crucial period in which political power was switching from the ideology of secular nationalism to that of religious (Islamist) nationalism, the present study illustrates ways in which external and internal influences may affect citizenship education. In particular, it contributes to debates over the role of international agencies in curriculum change in citizenship education.
description: JSSE - Journal of Social Science Education, 4-2017 Constructing the Legitimate Knowledge
Synthesis, physical and magnetic properties of CuAlCr$_4$S$_8$: a new Cr-based breathing pyrochlore
Creators: name: Sharma, S.
name: Pocrnic, M.
name: Richtik, B. N.
name: Wiebe, C. R.
name: Beare, J.
name: Gautreau, J.
name: Clancy, J. P.
name: Ruff, J. P. C.
name: Pula, M.
name: Chen, Q.
name: Cai, Y.
name: Yoon, S.
name: Luke, G. M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present the synthesis and physical properties of a new breathing pyrochlore magnet CuAlCr$_4$S$_8$ with the help of synchrotron x-ray diffraction (XRD), magnetization under ambient and applied hydrostatic pressure, heat capacity, and muon spin relaxation/rotation ($μ$SR) measurements. CuAlCr$_4$S$_8$ exhibits positive thermal expansion with concave upward temperature dependence. We observed a sharp antiferromagnetic ordering transition of a purely magnetic nature at 20 K, which shifts by as much as 3.2 K on the application of 600 MPa pressure. The breathing factor (B$_f$ = $J'/J$) in breathing pyrochlores can be an important parameter to tune the magnetic ground states of the pyrochlore lattice. The breathing factor can be modulated through breathing ratio, the ratio of sizes of the two tetrahedra, by using different elements at A and A' sites in the breathing pyrochlore structure. We find that CuAlCr$_4$S$_8$ has a breathing ratio of 1.0663(8), which is comparable to other sulfur breathing pyrochlores.
description: 7 pages, 7 figures
title: Pelvic Lipomatosis: a case report with classic imaging findings
Creators: name: Gupta, Neeti
Publisher: name: EURORAD
Year: 2022
Subjects: subject: Abdominal imaging
subject: Abdomen
subject: Pelvis
subject: Urinary Tract / Bladder
subject: CT
subject: Fluoroscopy
subject: Clinical Cases

description: Clinical History: A 51-year-old male patient with no comorbidities presented with lower abdominal swelling and burning micturition. On examination, a mass was felt in the hypogastric region with side-to-side mobility.

description: 51 years, male
Changing Attitudes, Changing Behaviors. Conceptual Change as a Model for Teaching Freedom of Religion or Belief
Creators: name: Ramirez, Mary Anne Rea
name: Ramirez, Tina Marie
Publisher: name: sowi-online e.V., Bielefeld
Year: 2018

description: Purpose: The purpose is to demonstrate that conceptual change theory and strategies can be applied to areas of the social science, such as human rights education on FORB.

Design/methodology/approach: The theoretical scope of this paper is conceptual change theory and is intended to introduce the theory and practice of conceptual change in teaching about FORB in social sciences and how it was used in training teachers.

Findings: Conceptual change theory and strategies were found to be effective in teaching about FORB.
Practical implications: This study introduces the use of conceptual change theory and strategies in teaching about human rights.
description: JSSE - Journal of Social Science Education, 4-2017 Constructing the Legitimate Knowledge
Head2Toe: Utilizing Intermediate Representations for Better Transfer Learning
Creators: name: Evci, Utku
name: Dumoulin, Vincent
name: Larochelle, Hugo
name: Mozer, Michael C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Transfer-learning methods aim to improve performance in a data-scarce target domain using a model pretrained on a data-rich source domain. A cost-efficient strategy, linear probing, involves freezing the source model and training a new classification head for the target domain. This strategy is outperformed by a more costly but state-of-the-art method -- fine-tuning all parameters of the source model to the target domain -- possibly because fine-tuning allows the model to leverage useful information from intermediate layers which is otherwise discarded by the later pretrained layers. We explore the hypothesis that these intermediate layers might be directly exploited. We propose a method, Head-to-Toe probing (Head2Toe), that selects features from all layers of the source model to train a classification head for the target-domain. In evaluations on the VTAB-1k, Head2Toe matches performance obtained with fine-tuning on average while reducing training and storage cost hundred folds or more, but critically, for out-of-distribution transfer, Head2Toe outperforms fine-tuning.
description: presented at ICML 2022 (Oral)
Darstellung einer Compliance-Perspektive auf der Basis des Business Rules Management unter Verwendung des Business Motivation Model und der SBVR-Spezifikation
Creators: name: Lange, Christoph Paul
Publisher: name: e-Journal of Practical Business Research
Year: 2011
Subjects: managementScience

description: Ausgabe 12 (11/2011) : Hochschule für Wirtschaft und Recht Berlin, pages 1-59
Low energy limit for the resolvent of some fibered boundary operators
Creators: name: Kottke, Chris
name: Rochon, Frédéric
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: 58J05, 58J40

description: For certain Dirac operators $ð_ϕ$ associated to a fibered boundary metric $g_ϕ$, we provide a pseudodifferential characterization of the limiting behavior of $(ð_ϕ+kγ)^{-1}$ as $k\searrow 0$, where $γ$ is a self-adjoint operator anti-commuting with $ð_ϕ$ and whose square is the identity. This yields in particular a pseudodifferential characterization of the low energy limit of the resolvent of $ð_ϕ^2$, generalizing a result of Guillarmou and Sher about the low energy limit of the resolvent of the Hodge Laplacian of an asymptotically conical metric. As an application, we use our result to give a pseudodifferential characterization of the inverse of some suspended version of the operator $ð_ϕ$. One important ingredient in the proof of our main theorem is that the Dirac operator $ð_ϕ$ is Fredholm when acting on suitable weighted Sobolev spaces. This result has been known to experts for some time and we take this as an occasion to provide a complete explicit proof.
description: 51 pages, 7 figures, improved the presentation, corrected the statements and proofs of Theorem 2.9 and Lemma 7.6
Disordered collective motion in dense assemblies of persistent particles
Creators: name: Keta, Yann-Edwin
name: Jack, Robert L.
name: Berthier, Ludovic
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We explore the emergence of nonequilibrium collective motion in disordered non-thermal active matter when persistent motion and crowding effects compete, using simulations of a two-dimensional model of size polydisperse self-propelled particles. In stark contrast with monodisperse systems, we find that polydispersity stabilizes a homogeneous active liquid at arbitrary large persistence times, characterized by remarkable velocity correlations and irregular turbulent flows. For all persistence values, the active fluid undergoes a nonequilibrium glass transition at large density. This is accompanied by collective motion, whose nature evolves from near-equilibrium spatially heterogeneous dynamics at small persistence, to a qualitatively different intermittent dynamics when persistence is large. This latter regime involves a complex time evolution of the correlated displacement field
description: Authors' accepted version for publication in Physical Review Letters
title: Slip rate of the Danghe Nan Shan thrust fault from 10Be exposure dating of folded river terraces: Implications for the strain distribution in northern Tibet
Creators: name:  Xu ,  Qiang
name:  Hetzel ,  Ralf
name:  Hampel ,  Andrea
name:  Wolff ,  Reinhard
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2021

description: The northeastward motion of the Tibetan Plateau along the Altyn Tagh strike-slip fault causes thrust faulting in three parallel mountain ranges (Qilian Shan, Daxue Shan, Danghe Nan Shan) in the plateau interior, and leads to NNE-directed crustal shortening and plateau growth. While slip rates at the plateau margin (i.e. along the Qilian Shan and the Altyn Tagh fault) are well constrained, rates of thrust faulting and the strain distribution in the plateau interior remain poorly resolved. Here, we use field investigations, a high-resolution DEM, and 10Be exposure dating to quantify the shortening rate across the Danghe Nan Shan thrust fault from fluvial terraces, which are deformed by a growing NNE-vergent anticline (Xu et al., Tectonics, 2021, https://doi.org/10.1029/2020TC006584). 10Be ages from two terrace levels range from 70±5 to 92±7 ka. When combined with uplift values of 37–68 m along the fold hinge, the 10Be ages yield a mean uplift rate of 0.6±0.2 mm/year. Using the cross-sectional area of the fold and the subsurface geometry of the listric thrust fault, we obtain a shortening rate of 0.8±0.2 mm/year, which is consistent with the rate of elastic strain accumulation recorded by GPS data. Together with published fault slip rates and GPS data, our results indicate that Tibet experiences NNE-directed shortening at a rate of ∼5 mm/year between Qaidam Basin and Hexi Corridor. In the plateau interior, this shortening is accommodated by several range-bounding thrust faults and closely coupled with the eastward decrease in the slip rate of the Altyn Tagh fault.
Brief an [Matthias Erb?]
Creators: name: Hedio, Caspar
Publisher: name: [s.n.]
Year: 1538

description: von Caspar Hedio
description: Öffentliche Bibliothek der Universität Basel
description: Lateinisch
description: Verzeichnung=Description=Inventaire Januar 2018 HAN-Katalogisierungsregeln Vollständige Rekatalogisierung nach Standortverzeichnis, Briefkatalog und Original
Wirkungsvolles Verwaltungshandeln durch Business Intelligence am Beispiel des kommunalen Sozialwesens
Creators: name: Strietzel, Tim
Publisher: name: e-Journal of Practical Business Research
Year: 2011
Subjects: managementScience

description: Ausgabe 12 (11/2011) : Hochschule für Wirtschaft und Recht Berlin, pages 1-91
Brief an Matthias Erb
Creators: name: Hedio, Caspar
Publisher: name: [s.n.]
Year: 1550

description: von C[aspar] Hedio
description: Öffentliche Bibliothek der Universität Basel
description: Lateinisch
description: Verzeichnung=Description=Inventaire Januar 2018 HAN-Katalogisierungsregeln Vollständige Rekatalogisierung nach Standortverzeichnis, Briefkatalog und Original
Enhancement of supercurrent through ferromagnetic materials by interface engineering
Creators: name: Mishra, Swapna Sindhu
name: Klaes, Robert M.
name: Willard, Joshua
name: Loloee, Reza
name: Birge, Norman O.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Josephson junctions containing ferromagnetic materials exhibit interesting physics and show promise as circuit elements for superconducting logic and memory. For memory applications, the properties of the junction should be controllable by changing the magnetic configuration inside the junction. To achieve good magnetic switching properties, one should choose a soft magnetic material such as NiFe (permalloy); however, NiFe exhibits poor supercurrent transmission in Josephson junctions. In this work we put thin layers of Ni on either side of the NiFe and characterize the magnetic behavior and supercurrent transmission properties of the Ni/NiFe/Ni trilayers as a function of Ni and NiFe thicknesses. Using a Ni thickness of 0.4 nm, we find that the magnetic switching behavior of the trilayers is not severely degraded relative to plain NiFe, while the maximum supercurrent in the $π$-state of the trilayer Josephson junctions is increased by a factor of four relative to that of NiFe junctions. We speculate that the supercurrent enhancement is due to the different spin-dependent transport properties of the Cu/Ni and Cu/NiFe interfaces.
description: 10 pages, 7 figures
$K$-theoretic torsion and the zeta function
Creators: name: Klein, John R.
name: Malkiewich, Cary
Publisher: name: arXiv
Year: 2020
Subjects: subject: K-Theory and Homology (math.KT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 19J10, 57Q10

description: We generalize to higher algebraic $K$-theory an identity (originally due to Milnor) that relates the Reidemeister torsion of an infinite cyclic cover to its Lefschetz zeta function. Our identity involves a higher torsion invariant, the endomorphism torsion, of a parametrized family of endomorphisms as well as a higher zeta function of such a family. We also exhibit several examples of families of endomorphisms having non-trivial endomorphism torsion.
description: 39 pages incl. references. Comments welcome
Sonnenfleckenzeichnung Nr. 4666.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 22.08.1954, erstellt von Karl Rapp in Locarno-Monti
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1954

description: Bleistiftzeichnung mit Tinte und Farbstift, erstellt für die Beobachtungen in Locarno-Monti auf dem Vordruck der Eidgenössischen Sternwarte Zürich. Instrument: Merz-Refraktor mit 13.5 cm Öffnung und 195 cm Brennweite, vereinzelt andere Instrumente wie Tel. 88x; Sonnenbild D = 25 cm. - Auf der Zeichnung wird zum Teil das Instrument vermerkt bzw. die Zählung der Beobachtungen im Projektionsverfahren fortgesetzt. Sporadisch sind Resultate mehrerer Aufnahmen pro Tag aufgelistet. Zuhanden der späteren statistischen Verarbeitung sind die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Zeichnung aus der Zeit der Beobachtertätigkeit von Ing. Karl Rapp als Privat-Astronom, die er seit den Neunzehnvierziger Jahren für die Eidgenössische Sternwarte Zürich ausführte. Aus den ersten zwei Jahren der freiwilligen Mitarbeit sind nur einzelne Stücke überliefert. Erst zwei Jahre später ist jeweils eine ergänzende Serie in Zürich aufbewahrt worden. Nochmals fünf Jahre später arbeitete Karl Rapp neu auf vertraglicher Basis weiter mit, bis schliesslich nach einem weiteren Jahrzehnt die permanente Beobachtungsstation in Locarno-Monti geschaffen wurde, welche an die langjährige Serie von Karl Rapp anknüpfte
A Regret Minimization Approach to Multi-Agent Control
Creators: name: Ghai, Udaya
name: Madhushani, Udari
name: Leonard, Naomi
name: Hazan, Elad
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We study the problem of multi-agent control of a dynamical system with known dynamics and adversarial disturbances. Our study focuses on optimal control without centralized precomputed policies, but rather with adaptive control policies for the different agents that are only equipped with a stabilizing controller. We give a reduction from any (standard) regret minimizing control method to a distributed algorithm. The reduction guarantees that the resulting distributed algorithm has low regret relative to the optimal precomputed joint policy. Our methodology involves generalizing online convex optimization to a multi-agent setting and applying recent tools from nonstochastic control derived for a single agent. We empirically evaluate our method on a model of an overactuated aircraft. We show that the distributed method is robust to failure and to adversarial perturbations in the dynamics.
Transitional millisecond pulsars
Creators: name: Papitto, Alessandro
name: de Martino, Domitilla
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Millisecond pulsars in tight binaries have recently opened new challenges in our understanding of physical processes governing the evolution of binaries and the interaction between astrophysical plasma and electromagnetic fields. Transitional systems that showed changes from rotation-powered to accretion powered states and vice versa have bridged the populations of radio and accreting millisecond pulsars, eventually demonstrating the tight evolutionary link envisaged by the recycling scenario. A decade of discoveries and theoretical efforts have just grasped the complex phenomenology of transitional millisecond pulsars from the radio to the gamma-ray band. This review summarises the main properties of the three transitional millisecond pulsars discovered so far, as well as of candidates and related systems, discussing the various models proposed to cope with the multifaceted behaviour.
description: Preprint of a chapter of the book 'Millisecond Pulsars', of the Astrophysics and Space Science Library (ASSL) series edited by Sudip Bhattacharyya, Alessandro Papitto and Dipankar Bhattacharya; 36 pages, 8 figures
Sonnenfleckenzeichnung Nr. 62.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 17.03.1968, erstellt von Araldo Pittini, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1968

description: Bleistiftzeichnung mit Tinte und Farbstift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf dem Vordruck der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert
Motives with modulus, III: The categories of motives
Creators: name: Kahn, Bruno
name: Miyazaki, Hiroyasu
name: Saito, Shuji
name: Yamazaki, Takao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics
subject: 19E15 (14F42, 19D45, 19F15)

description: We construct and study a triangulated category of motives with modulus $\mathbf{MDM}_{\mathrm{gm}}^{\mathrm{eff}}$ over a field $k$ that extends Voevodsky's category $\mathbf{DM}_{\mathrm{gm}}^{\mathrm{eff}}$ in such a way as to encompass non-homotopy invariant phenomena. In a similar way as $\mathbf{DM}_{\mathrm{gm}}^{\mathrm{eff}}$ is constructed out of smooth $k$-varieties, $\mathbf{MDM}_{\mathrm{gm}}^{\mathrm{eff}}$ is constructed out of proper modulus pairs, introduced in Part I of this work. To such a modulus pair we associate its motive in $\mathbf{MDM}_{\mathrm{gm}}^{\mathrm{eff}}$. In some cases the $\mathrm{Hom}$ group in $\mathbf{MDM}_{\mathrm{gm}}^{\mathrm{eff}}$ between the motives of two modulus pairs can be described in terms of Bloch's higher Chow groups.
description: Minor corrections. To appear in Ann. of K-theory
Grammars for Free: Toward Grammar Inference for Ad Hoc Parsers
Creators: name: Schröder, Michael
name: Cito, Jürgen
Publisher: name: arXiv
Year: 2022
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Ad hoc parsers are everywhere: they appear any time a string is split, looped over, interpreted, transformed, or otherwise processed. Every ad hoc parser gives rise to a language: the possibly infinite set of input strings that the program accepts without going wrong. Any language can be described by a formal grammar: a finite set of rules that can generate all strings of that language. But programmers do not write grammars for ad hoc parsers -- even though they would be eminently useful. Grammars can serve as documentation, aid program comprehension, generate test inputs, and allow reasoning about language-theoretic security. We propose an automatic grammar inference system for ad hoc parsers that would enable all of these use cases, in addition to opening up new possibilities in mining software repositories and bi-directional parser synthesis.
title: Exhumation and erosion rates in the flat-topped Nock Mountains in the Eastern Alps constrained by low-temperature and cosmogenic 10Be data
Creators: name:  Wölfler ,  Andreas
name:  Hampel ,  Andrea
name:  Glotzbach ,  Christoph
name:  Dunkl ,  István
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2021

description: Constraining rates of landscape evolution is a necessary pre-requisite for reconstructing the spatiotemporal evolution of the Earth´s surface. In our study, we present new zircon and apatite fission track and (U-Th)/He ages as well as catchment-wide 10Be-derived erosion rates to determine exhumation and erosion rates in the Nock Mountains, an elevated-low relief landscape in the Eastern Alps. Zircon fission track and zircon (U-Th)/He analyses yielded cooling ages of ~90 and ~80 Ma, respectively, which we interpret to reflect late Cretaceous cooling after Eoalpine metamorphism. Apatite fission track and (U-Th)/He ages are significant younger and range from ca. 35-28 Ma. Time-temperature history modelling of the thermochronological ages suggests enhanced cooling in the Eocene followed by thermal stagnation. Our results show that amount of erosion since ~35 Ma does not exceed 2-3 km and that average erosion rates did not significantly change. Assuming that rock exhumation occurred by erosion only, the long-term erosion rate is ~50-100 mm//kyr and therefore of similar magnitude as the short-term 10Be erosion rates that range from ~90-200 mm/kyr, despite the different timescales of the methods. Our data support the notion that the Nock Mountains represent an area of long-lasting stability although tectonic and glacial-interglacial cycles affected the Eastern Alps since ~35 Ma.
Kolmogorov complexity as intrinsic entropy of a pure state: Perspective from entanglement in free fermion systems
Creators: name: Ma, Ken K. W.
name: Yang, Kun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider free fermion systems in arbitrary dimensions and represent the occupation pattern of each eigenstate as a classical binary string. We find that the Kolmogorov complexity of the string correctly captures the scaling behavior of its entanglement entropy (EE). In particular, the logarithmically-enhanced area law for EE in the ground state and the volume law for EE in typical highly excited states are reproduced. Since our approach does not require bipartitioning the system, it allows us to distinguish typical and atypical eigenstates directly by their intrinsic complexity. We reveal that the fraction of atypical eigenstates which do not thermalize in the free fermion system vanishes exponentially in the thermodynamic limit. Our results illustrate explicitly the connection between complexity and EE of individual pure states in quantum systems.
description: Accepted version by PRB
Reconfigurable Intelligent Surfaces in Challenging Environments: Underwater, Underground, Industrial and Disaster
Creators: name: Kisseleff, Steven
name: Chatzinotas, Symeon
name: Ottersten, Björn
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: Emerging Technologies (cs.ET)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Challenging environments comprise a range of scenarios, which share the fact that it is extremely difficult to establish a communication link using conventional technology due to many impairments typically associated with the propagation medium and increased signal scattering. Specifically, underwater and underground media are known to absorb electromagnetic radiation, which heavily affects the overall path loss. Industrial and disaster environments can be viewed as rich scattering environments with corresponding substantial multipath propagation leading to intersymbol interference and deterioration of signal quality. Although the challenges for the design of communication networks, and specifically the Internet of Things (IoT), in such environments are known, there is no common enabler or solution for all these applications. Reconfigurable intelligent surfaces (RISs) have been introduced to improve the signal propagation characteristics by focusing the signal power in the preferred direction, thus making the communication environment 'smart'. While the usual application of RIS is related to blockage avoidance, the very same technique can be used to reduce the effect of multipath and even partially compensate the signal absorption via passive beamforming. Due to the beneficial properties of RIS, its use in challenging environments can become the aforementioned enabler and a game changing technology. In this paper, we discuss potential use cases, deployment strategies and design aspects for RIS devices in underwater IoT, underground IoT as well as Industry 4.0 and emergency networks. Furthermore, we provide a potential hardware architecture and derive the expected signal quality. The numerical results reveal substantial performance gains of up to 20 dB per decade. In addition, novel research challenges to be addressed in this context are described.
description: 16 pages, 13 figures, published
Brief an Matthias Erb
Creators: name: Hedio, Caspar
Publisher: name: [s.n.]
Year: 1537

description: von C[aspar] Hedio
description: Öffentliche Bibliothek der Universität Basel
description: Lateinisch
description: Verzeichnung=Description=Inventaire Januar 2018 HAN-Katalogisierungsregeln Vollständige Rekatalogisierung nach Standortverzeichnis, Briefkatalog und Original
Brief an Matthias Erb
Creators: name: Hedio, Caspar
Publisher: name: [s.n.]
Year: 1549

description: von C[aspar] H[edio]
description: Öffentliche Bibliothek der Universität Basel
description: Lateinisch
description: Verzeichnung=Description=Inventaire Januar 2018 HAN-Katalogisierungsregeln Vollständige Rekatalogisierung nach Standortverzeichnis, Briefkatalog und Original