cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Charge-dependent directed flows in heavy-ion collisions by Boltzmann-Maxwell equations
Creators: name: Zhang, Jun-Jie
name: Sheng, Xin-Li
name: Pu, Shi
name: Chen, Jian-Nan
name: Peng, Guo-Liang
name: Wang, Jian-Guo
name: Wang, Qun
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We have calculated the directed flow $v_{1}$ and charge-dependent directed flow $Δv_{1}$ for pions and protons in Au+Au collisions at $\sqrt{s_{NN}}=200$GeV by solving the coupled Boltzmann-Maxwell equations self-consistently. Our numerical results show that $v_{1}$ for pions and protons are all negative in the positive mid rapidity region and have similar behavior and magnitude. In contrast we find a quite different behavior in $Δv_{1}$ for pions and protons. The difference lies in that $Δv_{1}$ for protons mainly comes from pressure gradients of the medium, while the dominant contribution to $Δv_{1}$ for pions is from electromagnetic fields. Our results indicate that the effect of the electric field will slightly exceed that of the magnetic and lead to a small negative slope of $Δv_{1}$ for pions
description: 9 pages, 6 figures; accepted by Phys. Rev. Research
Bubble Nucleation to All Orders
Creators: name: Ekstedt, Andreas
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This paper extends classical results by Langer and Kramers and combines them with modern methods from high-temperature field theory. Assuming Langevin dynamics, the end-product is an all-orders description of bubble-nucleation at high temperatures. Specifically, it's shown that equilibrium and non-equilibrium effects factorize to all orders, and that the nucleation rate splits into a statistical and a dynamical prefactor. The derivation clarifies, and incorporates, higher-order corrections from zero-modes. The rate is also shown to be real to all orders in perturbation theory. The methods are applied to several models. As such, Feynman rules are given; the relevant power-counting is introduced; RG invariance is shown; the connection with the effective action is discussed, and an explicit construction of propagators in an inhomogeneous background is given. The formalism applies to both phase and Sphaleron transitions. While mainly focused on field theory, the methods are applicable to finite-dimensional systems. Finally, as this paper assumes an effective Langevin description, all results only hold within this framework.
description: 45 pages, 16 figures. Post-publication version
Nontrivial solutions of boundary value problems for second order functional differential equations
Creators: name: Calamai, Alessandro
name: Infante, Gennaro
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: Primary 34K10, secondary 34B10, 34B18, 47H10

description: In this paper we present a theory for the existence of multiple nontrivial solutions for a class of perturbed Hammerstein integral equations. Our methodology, rather than to work directly in cones, is to utilize the theory of fixed point index on affine cones. This approach is fairly general and covers a class of nonlocal boundary value problems for functional differential equations. Some examples are given in order to illustrate our theoretical results.
description: 19 pages, revised version
Onderzoek ondergewicht bij kanker, Gezond Leven met Kanker
Creators: name: Voshol, Peter
name: De Vette, Maaike
name: Van der Graaff, Mascha
name: Smits, Estelle
name: Poorthuis, Anne-Marie
Publisher: name: Zenodo
Year: 2023

description: Thema Ondergewicht
Meerdere MMV leden worstelen al jaren met ondergewicht en het blijkt niet eenvoudig om oplossingen te vinden. Er zijn veel vragen over op gewicht komen en op gewicht blijven en kennis over ondergewicht is versnipperd of ontbreekt. Zowel patiënten als professionals zoeken naar kennis en ervaring om hiermee verder te komen. Een actueel thema dus dat aandacht vraagt.
Leefstijlkeuzes
Ondergewicht en plots gewichts-verlies bij kanker blijkt dus een veel voorkomende en vooral ook complexe klacht. We nemen de zes leefstijlpijlers uit het zelfonderzoek-programma gezond leven als vertrekpunt om ondergewicht nader te onderzoeken: voeding, beweging, rust en herstel, verbinding, middelengebruik en bestaanszekerheid.
Frobenius functors, stable equivalences and $K$-theory of Gorenstein projective modules
Creators: name: Ren, Wei
Publisher: name: arXiv
Year: 2022
Subjects: subject: K-Theory and Homology (math.KT)
subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 18A40, 18G25, 18E30, 16D20, 55P65

description: Owing to the difference in $K$-theory, an example by Dugger and Shipley implies that the equivalence of stable categories of Gorenstein projective modules should not be a Quillen equivalence. We give a sufficient and necessary condition for the Frobenius pair of faithful functors between two abelian categories to be a Quillen equivalence, which is also equivalent to that the Frobenius functors induce mutually inverse equivalences between stable categories of Gorenstein projective objects. We show that the category of Gorenstein projective objects is a Waldhausen category, then Gorenstein $K$-groups are introduced and characterized. As applications, we show that stable equivalences of Morita type preserve Gorenstein $K$-groups, CM-finiteness and CM-freeness. Two specific examples of path algebras are presented to illustrate the results, for which the Gorenstein $K_0$ and $K_1$-groups are calculated.
description: 27 pages. The Ref. [23] is added. Comments and suggestions are appreciated!
Electronic structure, spin excitations, and orbital ordering in a three-orbital model for iron pnictides
Creators: name: Ghosh, Sayandip
name: Singh, Avinash
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A three-orbital itinerant-electron model involving d_{xz}, d_{yz} and d_{xy} Fe 3d orbitals is proposed for iron pnictides towards understanding the (π,0) ordered magnetism and magnetic excitations in these materials. It is shown that this model at half filling yields a gapped (π,0) magnetic state with high degree of robustness and stability, and simultaneously reproduces several experimentally observed features such as the electronic structure, spin excitations, as well as the ferro orbital order between the d_{xz} and d_{yz} orbitals.
description: 10 pages, 9 figures
Enhanced $thj$ signal at the LHC with $h\rightarrow γγ$ decay and $\mathcal{CP}$-violating top-Higgs coupling
Creators: name: Yue, Jason
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the observability of non-standard top Yukawa couplings in the $pp\rightarrow t(\rightarrow \ell ν_\ell b ) h(\rightarrow γγ)j$ channel at 14 TeV high-luminosity LHC (HL-LHC). The small diphoton branching ratio is enhanced when the $\mathcal{CP}$-violating phase, $ξ$, of the top-Higgs interaction is non-zero. When the modulus of the top-Higgs interaction assumes the SM value, $y_t=y_t^{SM}$, we find that the signal significance reaches $2.7σ$ $( 7.7σ)$ when $ξ= 0.25π$ $(0.5π) $. Furthermore, the different couplings modify the polarisation of the top quark, and can subsequently be distinguished via asymmetries in spin correlations with the final state leptons. The diphoton decay mode is found to be significantly more promising than the previously considered $pp\rightarrow t(\rightarrow \ell ν_\ell b ) h(\rightarrow b\overline{b})j$ channel.
description: 14 pages, 3 figures and 2 tables; minor corrections to match published version
Stichwort: Forschung in der wissenschaftlichen Weiterbildung
Creators: name: Jütte, Wolfgang
name: Lobe, Claudia
Publisher: name: Zeitschrift Hochschule und Weiterbildung (ZHWB)
Year: 2017

description: Zeitschrift Hochschule und Weiterbildung (ZHWB), 2016/2: Forschung auf und in wissenschaftliche(r) Weiterbildung
Supplementary Information from Interactions between the neural correlates of dispositional internally directed thought and visual imagery
Creators: name: Karapanagiotidis, Theodoros
name: Jefferies, Elizabeth
name: Smallwood, Jonathan
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Neuroscience
subject: 170299 Cognitive Science not elsewhere classified
subject: FOS: Psychology
subject: 60801 Animal Behaviour
subject: FOS: Biological sciences

description: Supplementary Information
Prioritizing municipal lead mitigation projects as a relaxed knapsack optimization: a method and case study
Creators: name: Slavitt, Isaac
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computers and Society (cs.CY)
subject: Optimization and Control (math.OC)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: J.6; G.1.6; G.2.1; H.4; I.6.3; K.4.1
subject: 90C90, 90B90, 90C09, 90C59

description: Lead pipe remediation budgets are limited and ought to maximize public health impact. This goal implies a non-trivial optimization problem; lead service lines connect water mains to individual houses, but any realistic replacement strategy must batch replacements at a larger scale. Additionally, planners typically lack a principled method for comparing the relative public health value of potential interventions and often plan projects based on non-health factors. This paper describes a simple process for estimating child health impact at a parcel level by cleaning and synthesizing municipal datasets that are commonly available but seldom joined due to data quality issues. Using geocoding as the core record linkage mechanism, parcel-level toxicity data can be combined with school enrollment records to indicate where young children and lead lines coexist. A harm metric of estimated exposure-years is described at the parcel level, which can then be aggregated to the project level and minimized globally by posing project selection as a 0/1 knapsack problem. Simplifying further for use by non-experts, the implied linear programming relaxation is solved intuitively with the greedy algorithm; ordering projects by benefit cost ratio produces a priority list which planners can then consider holistically alongside harder to quantify factors. A case study demonstrates the successful application of this framework to a small U.S. city's existing data to prioritize federal infrastructure funding. While this paper focuses on lead in drinking water, the approach readily generalizes to other sources of residential toxicity with disproportionate impact on children.
description: 16 pages, 6 figures; revise and extend
Freie Bildungsmaterialien in der wissenschaftlichen Weiterbildung. Herausforderungen und Chancen von OER
Creators: name: Lermen, Markus
name: Steinert, Farina
name: Wolf, Norina
Publisher: name: Zeitschrift Hochschule und Weiterbildung (ZHWB)
Year: 2017

description: Der Einsatz von Open Educational Resources (OER) im deutschen Bildungssystem wird mit zunehmender Tendenz diskutiert (s. KMK 2015; HRK 2016). Im Hochschulsystem gibt es bisher jedoch kaum breitenwirksame Erfahrungen mit frei zugänglichen bzw. frei lizenzierten Lehr-/ Lernmaterialien. Insbesondere in den Auseinandersetzungen zur wissenschaftlichen Weiterbildung ist der Einsatz von OER bisher selten im Fokus (vgl. Blees et al. 2015). Gleichwohl gibt es in diesem Sektor spezielle Gelingensbedingungen und strategierelevante Optionen bei der Einbindung von OER. Der Artikel setzt sich mit den grundlegenden Aspekten auseinander, die bei der Implementierung von OER in der wissenschaftlichen Weiterbildung und in dazugehörigen Fernstudienszenarien von Bedeutung sind. Es werden – u.a. flankiert durch Ergebnisse einer Befragung von Akteuren – Chancen und Herausforderungen in Bezug auf OER aufgezeigt und diskutiert.
description: Zeitschrift Hochschule und Weiterbildung (ZHWB), 2016/2: Forschung auf und in wissenschaftliche(r) Weiterbildung
title: Das Salz aus Hallstatt
Creators: name: Schaffner, Christian Andreas
Year: 2022

description: Der untertägige Salzabbau in Hallstatt bietet ein einzigartiges Fundspektrum. Bisherige Forschungen beschäftigten sich mit den Funden im Bergwerk sowie dessen unmittelbarer Umgebung, nicht aber mit der Frage, wie das Salz und die Versorgungsgüter transportiert wurden. Gegenstand der Arbeit ist die Untersuchung der Transportmöglichkeiten im Zeitraum vom 13. bis zum 11. Jahrhundert v. Chr. Die Bearbeitung erfolgte durch den Abgleich der zur Verfügung stehenden Verkehrsmittel im Untersuchungsraum mit den topografischen Besonderheiten der Region. Daraus wurden unterschiedliche Modelle des Transportes auf dem Land- und Wasserweg erstellt. Ergebnis ist die Darstellung des Personalaufwandes für die Durchführung der Transporte bis zu den ersten Handelsknotenpunkten in Gmunden sowie im Ennstal. Dabei wurden auch Fragen der Ressourcennutzung berücksichtigt.
description: The underground salt mining in Hallstatt offers a unique range of finds. Previous research has dealt with the finds in the mine and its immediate surroundings, but not with the question of how salt and the supplies were transported. The subject of the work is the investigation of the means of transport in the period from the 13th till 11th century BC. The study was carried out by determining the available means of transport in the study area with regards to the topographical features of the region. Different models of transport on land and water were derived from this. Resulting in a calculation of the needed manpower for carrying out the transports to the first trading hubs which are expected to have been near the city of Gmunden and in the Enns valley. Some aspects of resource management have also been considered.
Sabine Schmidt-Lauff/Heide von Felden/Henning Pätzold (Hrsg.) (2015): Transitionen in der Erwachsenenbildung. Gesellschaftliche, institutionelle und individuelle Übergänge.
Creators: name: Nierobisch, Kira
Publisher: name: Zeitschrift Hochschule und Weiterbildung (ZHWB)
Year: 2017

description: Zeitschrift Hochschule und Weiterbildung (ZHWB), 2016/2: Forschung auf und in wissenschaftliche(r) Weiterbildung
Topological squashed entanglement: nonlocal order parameter for one-dimensional topological superconductors
Creators: name: Maiellaro, Alfonso
name: Marino, Antonio
name: Illuminati, Fabrizio
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Identifying entanglement-based order parameters characterizing topological systems, in particular topological superconductors and topological insulators, has remained a major challenge for the physics of quantum matter in the last two decades. Here we show that the end-to-end, long-distance, bipartite squashed entanglement between the edges of a many-body system, defined in terms of the edge-to-edge quantum conditional mutual information, is the natural nonlocal order parameter for topological superconductors in one dimension as well as in quasi one-dimensional geometries. For the Kitaev chain in the entire topological phase, the edge squashed entanglement is quantized to log(2)/2, half the maximal Bell-state entanglement, and vanishes in the trivial phase. Such topological squashed entanglement exhibits the correct scaling at the quantum phase transition, is stable in the presence of interactions, and is robust against disorder and local perturbations. Edge quantum conditional mutual information and edge squashed entanglement defined with respect to different multipartitions discriminate topological superconductors from symmetry breaking magnets, as shown by comparing the fermionic Kitaev chain and the spin-1/2 Ising model in transverse field. For systems featuring multiple topological phases with different numbers of edge modes, like the quasi 1D Kitaev ladder, topological squashed entanglement counts the number of Majorana excitations and distinguishes the different topological phases of the system. In fact, we show that the edge quantum conditional mutual information and the edge squashed entanglement remain valid detectors of topological superconductivity even for systems, like the Kitaev tie with long-range hopping, featuring geometrical frustration and a suppressed bulk-edge correspondence.
description: 23 pages, 11 figures
ESREAs Europäischer Forschungskongress zur Erwachsenenbildung. Imagining diverse futures for adult education: questions of power an resources of creativity. 07. bis 11. September 2016, Maynooth University, National University of Ireland
Creators: name: Jütte, Wolfgang
Publisher: name: Zeitschrift Hochschule und Weiterbildung (ZHWB)
Year: 2017

description: Zeitschrift Hochschule und Weiterbildung (ZHWB), 2016/2: Forschung auf und in wissenschaftliche(r) Weiterbildung
Aktuelle Veröffentlichungen zum Thema „Hochschule und Weiterbildung“
Creators: name: Der Bibliothek Des Deutschen Instituts Für Erwachsenenbildung (DIE), Ein Service
Publisher: name: Zeitschrift Hochschule und Weiterbildung (ZHWB)
Year: 2017

description: Halbjahresauszug - Juni bis Mitte November 2016
description: Zeitschrift Hochschule und Weiterbildung (ZHWB), 2016/2: Forschung auf und in wissenschaftliche(r) Weiterbildung
Neuer Vorstand der DGWF gewählt. Ein Interview
Creators: name: ZHWB, Zeitschrift
Publisher: name: Zeitschrift Hochschule und Weiterbildung (ZHWB)
Year: 2017

description: Zeitschrift Hochschule und Weiterbildung (ZHWB), 2016/2: Forschung auf und in wissenschaftliche(r) Weiterbildung
Search for new resonances in $Wγ$ and $Zγ$ Final States in $pp$ Collisions at $\sqrt{s}=8$ TeV with the ATLAS Detector
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: This letter presents a search for new resonances decaying to final states with a vector boson produced in association with a high transverse momentum photon, $Vγ$, with $V= W(\rightarrow \ell ν)$ or $Z(\rightarrow \ell^{+} \ell^{-})$, where $\ell = e$ or $μ$. The measurements use 20.3 fb$^{-1}$ of proton-proton collision data at a center-of-mass energy of $\sqrt{s}=8$ TeV recorded with the ATLAS detector. No deviations from the Standard Model expectations are found, and production cross section limits are set at 95% confidence level. Masses of the hypothetical $a_{T}$ and $ω_{T}$ states of a benchmark Low Scale Technicolor model are excluded in the ranges [275,960] GeV and $[200,700]\cup[750,890]$ GeV, respectively. Limits at 95% confidence level on the production cross section of a singlet scalar resonance decaying to $Zγ$ final states have also been obtained for masses below 1180 GeV.
description: 10 pages plus author list + cover pages (23 pages total), 3 figures, 2 tables, submitted to PLB, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2013-09/
Autor_innen der Beiträge
Creators: name: ZHWB, Zeitschrift
Publisher: name: Zeitschrift Hochschule und Weiterbildung (ZHWB)
Year: 2017

description: Zeitschrift Hochschule und Weiterbildung (ZHWB), 2016/2: Forschung auf und in wissenschaftliche(r) Weiterbildung
Fluctuations, Bias, Variance & Ensemble of Learners: Exact Asymptotics for Convex Losses in High-Dimension
Creators: name: Loureiro, Bruno
name: Gerbelot, Cédric
name: Refinetti, Maria
name: Sicuro, Gabriele
name: Krzakala, Florent
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (stat.ML)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: From the sampling of data to the initialisation of parameters, randomness is ubiquitous in modern Machine Learning practice. Understanding the statistical fluctuations engendered by the different sources of randomness in prediction is therefore key to understanding robust generalisation. In this manuscript we develop a quantitative and rigorous theory for the study of fluctuations in an ensemble of generalised linear models trained on different, but correlated, features in high-dimensions. In particular, we provide a complete description of the asymptotic joint distribution of the empirical risk minimiser for generic convex loss and regularisation in the high-dimensional limit. Our result encompasses a rich set of classification and regression tasks, such as the lazy regime of overparametrised neural networks, or equivalently the random features approximation of kernels. While allowing to study directly the mitigating effect of ensembling (or bagging) on the bias-variance decomposition of the test error, our analysis also helps disentangle the contribution of statistical fluctuations, and the singular role played by the interpolation threshold that are at the roots of the "double-descent" phenomenon.
description: 17 pages + Appendix
Projektbezogene Forschung und Entwicklung in der wissenschaftlichen Weiterbildung als Steuerungsimpuls hochschulinterner Veränderungsprozesse
Creators: name: Lengler, Asja
Publisher: name: Zeitschrift Hochschule und Weiterbildung (ZHWB)
Year: 2017

description: Durch projektbezogene Forschungs- und Entwicklungsvorhaben wird die hochschulinterne Auseinandersetzung mit dem Bereich der wissenschaftlichen Weiterbildung auf verschiedenen Funktions- und Organisationsebenen gefördert. Hierdurch ergeben sich nicht selten Veränderungsnotwendigkeiten innerhalb der Hochschulorganisation, die vor Projektbeginn nicht im Fokus lagen und erst im Prozess an Relevanz gewinnen. In dem vorliegenden Beitrag wird beispielhaft aufgezeigt, wie Veränderungsprozesse innerhalb von Hochschulen durch das Zusammenwirken von Forschung und (Angebots-)Entwicklung initiiert und von innen heraus intensiviert werden können.
description: Zeitschrift Hochschule und Weiterbildung (ZHWB), 2016/2: Forschung auf und in wissenschaftliche(r) Weiterbildung
Convergence of the probability of large deviations in a model of correlated random variables having compact-support $Q$-Gaussians as limiting distributions
Creators: name: Jauregui, Max
name: Tsallis, Constantino
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider correlated random variables $X_1,\dots,X_n$ taking values in $\{0,1\}$ such that, for any permutation $π$ of $\{1,\dots,n\}$, the random vectors $(X_1,\dots,X_n)$ and $(X_{π(1)},\dots,X_{π(n)})$ have the same distribution. This distribution, which was introduced by Rodríguez et al (2008) and then generalized by Hanel et al (2009), is scale-invariant and depends on a real parameter $ν>0$ ($ν\to\infty$ implies independence). Putting $S_n=X_1+\cdots+X_n$, the distribution of $S_n-n/2$ approaches a $Q$-Gaussian distribution with compact support ($Q=1-1/(ν-1)<1$) as $n$ increases, after appropriate scaling. In the present article, we show that the distribution of $S_n/n$ converges, as $n\to\infty$, to a beta distribution with both parameters equal to $ν$. In particular, the law of large numbers does not hold since, if $0\le x<1/2$, then $\mathbb{P}(S_n/n\le x)$, which is the probability of the event $\{S_n/n\le x\}$ (large deviation), does not converges to zero as $n\to\infty$. For $x=0$ and every real $ν>0$, we show that $\mathbb{P}(S_n=0)$ decays to zero like a power law of the form $1/n^ν$ with a subdominant term of the form $1/n^{ν+1}$. If $00$ is an integer, we show that we can analytically find upper and lower bounds for the difference between $\mathbb{P}(S_n/n\le x)$ and its ($n\to\infty$) limit. We also show that these bounds vanish like a power law of the form $1/n$ with a subdominant term of the form $1/n^2$.
description: 8 pages, 6 figures. Accepted for publication in Journal of Mathematical Physics
VarRCWA: An Adaptive High-Order Rigorous Coupled Wave Analysis Method
Creators: name: Zhu, Ziwei
name: Zheng, Changxi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: Computational Physics (physics.comp-ph)
subject: Optics (physics.optics)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Semi-analytical methods, such as rigorous coupled wave analysis, have been pivotal for numerical analysis of photonic structures. In comparison to other methods, they offer much faster computation, especially for structures with constant cross-sectional shapes (such as metasurface units). However, when the cross-sectional shape varies even mildly (such as a taper), existing semi-analytical methods suffer from high computational cost. We show that the existing methods can be viewed as a zeroth-order approximation with respect to the structure's cross-sectional variation. We instead derive a high-order perturbative expansion with respect to the cross-sectional variation. Based on this expansion, we propose a new semi-analytical method that is fast to compute even in presence of large cross-sectional shape variation. Furthermore, we design an algorithm that automatically discretizes the structure in a way that achieves a user specified accuracy level while at the same time reducing the computational cost.
Quantum Bootstrapping via Compressed Quantum Hamiltonian Learning
Creators: name: Wiebe, Nathan
name: Granade, Christopher
name: Cory, David G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recent work has shown that quantum simulation is a valuable tool for learning empirical models for quantum systems. We build upon these results by showing that a small quantum simulators can be used to characterize and learn control models for larger devices for wide classes of physically realistic Hamiltonians. This leads to a new application for small quantum computers: characterizing and controlling larger quantum computers. Our protocol achieves this by using Bayesian inference in concert with Lieb-Robinson bounds and interactive quantum learning methods to achieve compressed simulations for characterization. Whereas Fisher information analysis shows that current methods which employ short-time evolution are suboptimal, interactive quantum learning allows us to overcome this limitation. We illustrate the efficiency of our bootstrapping protocol by showing numerically that an 8-qubit Ising model simulator can be used to calibrate and control a 50 qubit Ising simulator while using only about 750 kilobits of experimental data.
description: Minor changes to references
Wolfgang Seitter/Michael Schemmann/Ulrich Vossebein (Hrsg.) (2015): Zielgruppen in der wissenschaftlichen Weiterbildung. Empirische Studien zu Bedarf, Potenzial und Akzeptanz.
Creators: name: Lobe, Claudia
Publisher: name: Zeitschrift Hochschule und Weiterbildung (ZHWB)
Year: 2017

description: Zeitschrift Hochschule und Weiterbildung (ZHWB), 2016/2: Forschung auf und in wissenschaftliche(r) Weiterbildung
title: Die Rentamtsbücher des Fürstentum Liechtenstein
Creators: name: Büchel, Anton
Year: 2022

description: In der Arbeit „Die Rentamtsbücher des Fürstentum Liechtenstein – Exemplarische xml-basierte digitale Edition des ersten Seriellen Bandes (LILA AS 08/002) und Diskussion des Mehrwerts für die Geschichtsforschung“ wurde die erste Rentamtsrechnung für das Fürstentum Liechtenstein von 1718–1723 in XML/TEI nach den Richtlinien der Bookkeeping-Ontology ediert und in der Fassung vom 09.02.2022 auf der DEPCHA, einer Plattform für digital edierte historische Rechnungsbücher, publiziert. Vorliegende Masterarbeit diskutiert den soziopolitischen Kontext, den Entstehungskontext der Quelle, die angewandte Editionsmethode sowie öffentliche Online-Publikation der edierten Rentamtsrechnung. Die Arbeit verweist lediglich auf die Edition, die auf dem Server des Geisteswissenschaftlichen Asset Management der Uni Graz stabil adressierbar publiziert ist. Grundsätzlich kommt die Arbeit zum Schluss, dass die von Georg Vogeler am Zentrum für Informationsmodellierung der Universität Graz entwickelten Methode einen grossen Mehrwert für die Verwendbarkeit digital Edierter Rechnungsbücher bringt. Sowohl die Aufbereitung der Forschungsdaten wie auch die Rezipierbarkeit der Inhalte für interessierte Laien gewinnt durch die Methode im Vergleich zu einer gedruckten Edition durch Zugänglichkeit und eine Erschliessung, die bis auf die Zeichenebene reichen kann.
„Biografie – Lebenslauf – Generation“ Jahrestagung der Sektion Erwachsenenbildung der DGfE. 28. bis 30. September 2016 in Tübingen
Creators: name: Kondratjuk, Maria
Publisher: name: Zeitschrift Hochschule und Weiterbildung (ZHWB)
Year: 2017

description: Zeitschrift Hochschule und Weiterbildung (ZHWB), 2016/2: Forschung auf und in wissenschaftliche(r) Weiterbildung
„Die Vielfalt der Lifelong Learners – Herausforderungen für die Weiterbildung an Hochschulen“ Jahrestagung der DGWF in Kooperation mit AUCEN. 14. bis 16. September 2016 in Wien
Creators: name: Cendon, Eva
Publisher: name: Zeitschrift Hochschule und Weiterbildung (ZHWB)
Year: 2017

description: Zeitschrift Hochschule und Weiterbildung (ZHWB), 2016/2: Forschung auf und in wissenschaftliche(r) Weiterbildung
Fluctuations in pedestrian dynamics routing choices
Creators: name: Gabbana, Alessandro
name: Toschi, Federico
name: Ross, Philip
name: Haans, Antal
name: Corbetta, Alessandro
Publisher: name: arXiv
Year: 2022
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Routing choices of walking pedestrians in geometrically complex environments are regulated by the interplay of a multitude of factors such as local crowding, (estimated) time to destination, (perceived) comfort. As individual choices combine, macroscopic traffic flow patterns emerge. Understanding the physical mechanisms yielding macroscopic traffic distributions in environments with complex geometries is an outstanding scientific challenge, with implications in the design and management of crowded pedestrian facilities. In this work, we analyze, by means of extensive real-life pedestrian tracking data, unidirectional flow dynamics in an asymmetric setting, as a prototype for many common complex geometries. Our environment is composed of a main walkway and a slightly longer detour. Our measurements have been collected during a dedicated high-accuracy pedestrian tracking campaign held in Eindhoven (The Netherlands). We show that the dynamics can be quantitatively modeled by introducing a collective discomfort function, and that fluctuations on the behavior of single individuals are crucial to correctly recover the global statistical behavior. Notably, the observed traffic split substantially departs from an optimal, transport-wise, partition, as the global pedestrian throughput is not maximized.
Analysis of Voltage Stability in Terms of Interactions of Q(U)-Characteristic Control in Distribution Grids
Creators: name: Krahmer, Sebastian
name: Ecklebe, Stefan
name: Schegner, Peter
name: Röbenack, Klaus
Publisher: name: arXiv
Year: 2022
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: As the amount of volatile, renewable energy sources in power distribution grids is increasing, the stability of the latter is a vital aspect for grid operators. Within the STABEEL project, the authors develop rules on how to parametrize the reactive power control of distributed energy resources to increase the performance while guaranteeing stability. The work focuses on distribution grids with a high penetration of distributed energy resources equipped with Q(U)-characteristic. This contribution is based on the stability assessment of previous work and introduces a new approach utilizing the circle criterion. With the aim of extending existing technical guidelines, stability assessment methods are applied to various distribution grids - including those from the SimBench project. Herein, distributed energy resources can be modelled as detailed control loops or as approximations, derived from technical guidelines.
description: Submitted to 5th International Conference on Smart Energy Systems and Technologies (SEST); Keywords: voltage stability, converter-driven stability, voltage control, Q(V)-characteristic, distribution grid; 7 pages
Black Holes in the 3D Higher Spin Theory and Their Quasi Normal Modes
Creators: name: Cabo-Bizet, Alejandro
name: Gava, Edi
name: Giraldo-Rivera, V. I.
name: Narain, K. S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a class of 3D Black Holes based on flat connections which are polynomials in the BTZ $hs(λ) \times hs(λ)$-valued connection. We solve analytically the fluctuation equations of matter in their background and find the spectrum of their Quasi Normal Modes. We analyze the bulk to boundary two-point functions. We also relate our results and those arising in other backgrounds discussed recently in the literature on the subject.
description: v3: typo corrected in first line of Eq (4.2), improved presentation
Relaxation of the parameter independence assumption in the `bootComb` R package
Creators: name: Henrion, Marc Yves Romain
Publisher: name: arXiv
Year: 2022
Subjects: subject: Methodology (stat.ME)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: 62-08

description: Background. The bootComb R package allows researchers to derive confidence intervals with correct target coverage for arbitrary combinations of arbitrary numbers of independently estimated parameters. Previous versions (< 1.1.0) of bootComb used independent bootstrap sampling and required that the parameters themselves are independent - an unrealistic assumption in some real-world applications. Findings. Using Gaussian copulas to define the dependence between parameters, the bootComb package has been extended to allow for dependent parameters. Implications. The updated bootComb package can now handle cases of dependent parameters, with users specifying a correlation matrix defining the dependence structure. While in practice it may be difficult to know the exact dependence structure between parameters, `bootComb` allows running sensitivity analyses to assess the impact of parameter dependence on the resulting confidence interval for the combined parameter. Availability. bootComb is available from the Comprehensive R Archive Network (https://CRAN.R-project.org/package=bootComb).
description: 9 pages, 2 figures. For associated R package, see https://cran.r-project.org/package=bootComb. For paper describing the main bootComb package, see https://doi.org/10.1093/ije/dyab049
Verbindung von qualitativen und quantitativen Bedarfsanalysen in der wissenschaftlichen Weiterbildung
Creators: name: Bartsch, Annette
name: Kundolf, Susanne
name: Wrobel, Ulrike
Publisher: name: Zeitschrift Hochschule und Weiterbildung (ZHWB)
Year: 2017

description: Um wissenschaftliche Weiterbildungsangebote zielgruppenspezifisch und nachfrageorientiert aufzusetzen, sollten qualitative und quantitative Studien gezielt kombiniert werden. Das Forschungsdesign im Projekt „excellent mobil“ verknüpft die Sekundäranalyse zu branchenspezifischen Veränderungen in den Tätigkeitsstrukturen und eine Marktanalyse zu den Weiterbildungsangeboten mit eigenen standortübergreifenden Bedarfserhebungen in Betrieben der Mobilitätswirtschaft. Die auf diesen Grundlagen entwickelten Pilotstudienangebote wurden in einem weiteren Schritt mittels Primäranalysen geprüft, ob sie inhaltlich sowie didaktisch den Anforderungen und Erwartungen der Unternehmen und der Teilnehmenden entsprechen. Der Artikel gibt Empfehlungen für die Forschungspraxis anhand konkreter Beispiele und Ergebnisse und zeigt weiterführende Ansätze einer kombinierten qualitativ-quantitativen Bedarfsanalyse auf.
description: Zeitschrift Hochschule und Weiterbildung (ZHWB), 2016/2: Forschung auf und in wissenschaftliche(r) Weiterbildung
Andrä Wolter/Ulf Banscherus/Caroline Kamm (Hrsg.) (2016): Zielgruppen Lebenslangen Lernens an Hochschulen. Ergebnisse der wissenschaftlichen Begleitung des Bund-Länder-Wettbewerbs Aufstieg durch Bildung: offene Hochschule. Band 1.
Creators: name: Weber, Karl
Publisher: name: Zeitschrift Hochschule und Weiterbildung (ZHWB)
Year: 2017

description: Zeitschrift Hochschule und Weiterbildung (ZHWB), 2016/2: Forschung auf und in wissenschaftliche(r) Weiterbildung
title: Richtungswechsel Wohlstandsverständnis?
Creators: name: Schmidt, Sophie Hanna
Year: 2022

description: Die vorliegende Masterarbeit gibt einen Einblick in die auf politischer Ebene behandelten Wohlstandsnarrative. Dazu wurden zunächst die Problematiken der imperialen Lebensweise (IML) aufgezeigt und Überlegungen entwickelt, die sich mit dem Ausstieg aus der daraus resultierenden Krise auseinandersetzen. Ein Lösungsansatz besteht dabei in einer `Großen Transformation ́. Der theoretische Teil der Arbeit führt in die beiden Konzepte ein und beschäftigt sich mit den Indikatoren, die in der Gesellschaft dafür bekannt sind, zu `Wohlstand´ beizutragen. Anhand einer qualitativen Inhaltsanalyse wurde die aktuelle Deutsche Nachhaltigkeitsstrategie auf Wohlstandsnarrative untersucht, die vor dem Hintergrund einer Großen Transformation zukunftsfähig sind. Es konnte festgestellt werden, dass das dominierende materielle Wohlstandsverständnis um soziale und ökologische Komponente erweitert wurde.
description: This master´s thesis provides an insight into how narratives of prosperity are discussed on a political level. To this end, the problematic nature of the imperial mode of living (IML) was highlighted and considerations were developed that deal with the exit from the resulting crisis. In this context, one approach to a solution consists in the so-called `Great Transformation´. The theoretical part of the paper introduces these two concepts and deals with the indicators that are known in the society to contribute `prosperity´. Using a qualitative content analysis, the current German Sustainability Strategy (DNS) was examined for narratives of prosperity that are sustainable in the context of a `Great Transformation´. It was found that the dominant material understanding of prosperity has been expanded to include social and ecological components.
Analytical theory of oxygen transfer in the human placenta
Creators: name: Serov, A. S.
name: Salafia, C.
name: Filoche, M.
name: Grebenkov, D. S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Tissues and Organs (q-bio.TO)
subject: FOS: Biological sciences
subject: 35Q92, 92B05

description: We propose an analytical approach to solving the diffusion-convection equations governing oxygen transport in the human placenta. We show that only two geometrical characteristics of a placental cross-section, villi density and the effective villi radius, are needed to predict fetal oxygen uptake. We also identify two combinations of physiological parameters that determine oxygen uptake in a given placenta: (i) the maximal oxygen inflow of a placentone if there were no tissue blocking the flow, and (ii) the ratio of transit time of maternal blood through the intervillous space to oxygen extraction time. We derive analytical formulas for fast and simple calculation of oxygen uptake and provide two diagrams of efficiency of oxygen transport in an arbitrary placental cross-section. We finally show that artificial perfusion experiments with no-hemoglobin blood tend to give a two-orders-of-magnitude underestimation of the in vivo oxygen uptake and that the optimal geometry for such setup alters significantly. The theory allows one to adjust the results of artificial placenta perfusion experiments to account for oxygen-hemoglobin dissociation. Combined with image analysis techniques, the presented model can give an easy-to-use tool for prediction of the human placenta efficiency.
description: Keywords: Diffusion-convection; Stream-tube placenta model; Optimal villi density; Transport efficiency; Pathology diagnostics
Zentrale Diskussionsveranstaltung der Landesgruppe Rheinland-Pfalz und Saarland am Deutschen Weiterbildungstag 29. September 2016 an der Johannes Gutenberg-Universität Mainz
Creators: name: Klinkner, Margot
Publisher: name: Zeitschrift Hochschule und Weiterbildung (ZHWB)
Year: 2017

description: Zeitschrift Hochschule und Weiterbildung (ZHWB), 2016/2: Forschung auf und in wissenschaftliche(r) Weiterbildung
A note on a prey-predator model with constant-effort harvesting
Creators: name: Lemos-Silva, Márcia
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Dynamical Systems (math.DS)
subject: FOS: Biological sciences
subject: FOS: Mathematics
subject: 34C60, 34D20, 92D25

description: We study a prey-predator model based on the classical Lotka-Volterra system with Leslie-Gower and Holling IV schemes and a constant-effort harvesting. Our goal is twofold: to present the model proposed by Cheng and Zhang in 2021, pointing out some inconsistencies; to analyse the number and type of equilibrium points of the model. We end by proving the stability of the meaningful equilibrium point, according to the distribution of the eigenvalues.
description: This is a preprint whose final form is published by Springer Nature Switzerland AG in the book 'Dynamic Control and Optimization'. Submitted 30/Nov/2021; Accepted 10/Feb/2022
Experimental Violation Of Bell-like Inequalities By Electronic Shot Noise
Creators: name: Forgues, Jean-Charles
name: Lupien, Christian
name: Reulet, Bertrand
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum electronic noise, the random current fluctuations generated by electrons crossing a quantum conductor, has been thoroughly studied from the electron point of view. Recent experiments have shown that such noise may have striking properties in terms of the quantum electromagnetic field it generates. Both the existence of vacuum squeezing \cite{PAN_squeezing} and generation of correlated photon pairs \cite{C4quantique} have been observed. Here we demonstrate that this electromagnetic field also violates Bell-like inequalities, thereby proving its true quantum nature. This is achieved by the observation of two-mode quadrature squeezing of vacuum: the electromagnetic field quadratures at two different frequencies can be so correlated that their difference goes below vacuum fluctuations. Thus, electronic noise contains entangled photon pairs, a key ingredient for quantum computing and communication.
description: 5 pages, 4 figures
title: Ernährungserhebungen in klinischen Studien - Grenzen und Möglichkeiten
Creators: name: Stangl, Anna
Year: 2022

description: Ernährungserhebungen sind ein wesentlicher Bestandteil von ernährungswissenschaftlichen und epidemiologischen Studien. Da es einen erwiesenen Zusammenhang zwischen Ernährung und Krankheiten gibt, sind sie aber auch in klinischen und pharmakologischen Studien relevant. Ziel dieser Masterarbeit ist es einen Überblick über Erhebungsmethoden zu geben, sowie deren praktische Anwendung zu analysieren. Dazu wurde das Freiburger Ernährungsprotokoll einer klinischen Studie ausgewertet sowie eine kleine Pilotstudie zur Portionsgrößenevaluierung mittels Fotodokumentation durchgeführt. Des Weiteren wurde ein Fragebogen zur praktischen Anwendung des Wiener Ernährungsprotokolls (WEP) analysiert. Unsere klinische Studie zeigt, dass die Energieaufnahme einzelner Personen von Woche zu Woche statistisch signifikant schwankt. Das Führen des WEP ist mit einem täglichen Zeitaufwand von 15-30 Minuten aufwendiger als in der Literatur angegeben. Die im WEP ermittelte Gesamtenergiezufuhr weicht nach Korrektur der Portionsgrößen nicht signifikant ab. Obwohl die Fettaufnahme nach der Korrektur leicht steigt, unterscheidet sich die Makronährsoff-Zusammensetzung nicht signifikant. Subjektiv haben die Studienteilnehmer- und teilnehmerinnen ihr Ernährungsverhalten nicht verändert, jedoch mehr über ihre Ernährung nachgedacht und „einfachere Speisen“ konsumiert. Unsere Ergebnisse zeigen, dass Ernährungsprotokolle vorsichtig zu interpretieren sind, da sowohl Fehlangaben als auch die „day-to-day variation“ zu Misreporting führen können. Wichtig ist es, einen Kompromiss zwischen Auswertungsaufwand und Belastung für die Studienteilnehmer und -teilnehmerinnen zu finden. Die Auswahl der richtigen Methode sollte an die Studienziele und finanziellen Ressourcen angepasst werden. Zusammenfassend stellt das Wiener Ernährungsprotokoll eine aussagekräftige Möglichkeit dar, um die Ernährung von Probanden und Probandinnen klinischer Studien zu erfassen. Die Integration und Weiterentwicklung moderner Technologien und elektronischer Erhebungsmethoden ist essenziell um schlussendlich eine effizientere Erfassung, Auswertung und Nutzerfreundlichkeit zu erreichen.
A Stochastic Capital-Labour Model with Logistic Growth Function
Creators: name: Zine, Houssine
name: Danane, Jaouad
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Probability (math.PR)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 91B70

description: We propose and study a stochastic capital-labour model with logistic growth function. First, we show that the model has a unique positive global solution. Then, using the Lyapunov analysis method, we obtain conditions for the extinction of the total labour force. Furthermore, we also prove sufficient conditions for their persistence in mean. Finally, we illustrate our theoretical results through numerical simulations.
description: This is a preprint whose final form is published by Springer Nature Switzerland AG in the book 'Dynamic Control and Optimization'
Local gravitational physics of the Hubble expansion
Creators: name: Kopeikin, Sergei
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study physical consequences of the Hubble expansion of FLRW manifold on measurement of space, time and light propagation in the local inertial frame. We analyse the solar system radar ranging and Doppler tracking experiments, and time synchronization. FLRW manifold is covered by global coordinates (t,y^i), where t is the cosmic time coinciding with the proper time of the Hubble observers. We introduce local inertial coordinates x^a=(x^0,x^i) in the vicinity of a world line of a Hubble observer with the help of a special conformal transformation. The local inertial metric is Minkowski flat and is materialized by the congruence of time-like geodesics of static observers being at rest with respect to the local spatial coordinates x^i. We consider geodesic motion of test particles and notice that the local coordinate time x^0=x^0(t) taken as a parameter along the world line of particle, is a function of the Hubble's observer time t. This function changes smoothly from x^0=t for a particle at rest (observer's clock), to x^0=t+1/2 Ht^2 for photons, where H is the Hubble constant. Thus, motion of a test particle is non-uniform when its world line is parametrized by time t. NASA JPL Orbit Determination Program presumes that motion of light (after the Shapiro delay is excluded) is uniform with respect to the time t but it does not comply with the non-uniform motion of light on cosmological manifold. For this reason, the motion of light in the solar system analysed with the Orbit Determination Program appears as having a systematic blue shift of frequency, of radio waves circulating in the Earth-spacecraft radio link. The magnitude of the anomalous blue shift of frequency is proportional to the Hubble constant H that may open an access to the measurement of this fundamental cosmological parameter in the solar system radiowave experiments.
description: 12 pages, no figures, accepted to the European Physics Journal Plus (EPJP). arXiv admin note: substantial text overlap with arXiv:1311.4912