cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Models for digitally contact-traced epidemics
Creators: name: Boldrini, Chiara
name: Passarella, Andrea
name: Conti, Marco
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computers and Society (cs.CY)
subject: Networking and Internet Architecture (cs.NI)
subject: Physics and Society (physics.soc-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Contacts between people are the absolute drivers of contagious respiratory infections. For this reason, limiting and tracking contacts is a key strategy for the control of the COVID-19 epidemic. Digital contact tracing has been proposed as an automated solution to scale up traditional contact tracing. However, the required penetration of contact tracing apps within a population to achieve a desired target in the control of the epidemic is currently under discussion within the research community. In order to understand the effects of digital contact tracing, several mathematical models have been proposed. In this article, we survey the main ones and we propose a compartmental SEIR model with which it is possible, differently from the models in the related literature, to derive closed-form conditions regarding the control of the epidemic as a function of the contact tracing apps penetration and the testing efficiency. Closed-form conditions are crucial for the understandability of models, and thus for decision makers (including digital contact tracing designers) to correctly assess the dependencies within the epidemic. With our model, we find that digital contact tracing alone can rarely tame an epidemic: for unrestrained COVID-19, this would require a testing turnaround of around 1 day and app uptake above 80% of the population, which are very difficult to achieve in practice. However, digital contact tracing can still be effective if complemented with other mitigation strategies, such as social distancing and mask-wearing.
description: This work was partially funded by the H2020 SoBigData++ (Grant No 871042), H2020 HumaneAI-Net (Grant No 952026), and CHIST-ERA SAI (Grant No not yet available) projects
title: Riedlingen. Die Altstadt als Denkmal
Creators: name: Kraume-Probst, Sabine
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 24, Nr. 1 (1995), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Projective Structures in Loop Quantum Cosmology
Creators: name: Hanusch, Maximilian
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences
subject: 28C15, 28C05 (Primary) 46L60, 46N50, 53C05

description: Projective structures have successfully been used for the construction of measures in the framework of loop quantum gravity. In the present paper, we establish such structures for the configuration space $\mathbb{R}\sqcup \mathbb{R}_{\mathbb{Bohr}}$, recently introduced in the context of homogeneous isotropic loop quantum cosmology. In contrast to the traditional space $\mathbb{R}_{\mathbb{Bohr}}$, the first one is canonically embedded into the quantum configuration space of the full theory. In particular, for the embedding of states into a corresponding symmetric sector of loop quantum gravity, this is advantageous. However, in contrast to the traditional space, there is no Haar measure on $\mathbb{R}\sqcup \mathbb{R}_{\mathbb{Bohr}}$ defining a canonical kinematical $L^2$-Hilbert space on which operators can be represented. The introduced projective structures allow to construct a family of natural measures on $\mathbb{R}\sqcup \mathbb{R}_{\mathbb{Bohr}}$ whose corresponding $L^2$-Hilbert spaces we finally investigate.
description: 28 pages
title: Das „Sommercafé'' in Badenweiler. Ein frühes Beispiel progressiver Nachkriegsarchitektur
Creators: name: Kaiser, Wolfgang
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 24, Nr. 1 (1995), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: Inhalt
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 25, Nr. 1 (1996), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
The resource theory of informational nonequilibrium in thermodynamics
Creators: name: Gour, Gilad
name: Müller, Markus P.
name: Narasimhachar, Varun
name: Spekkens, Robert W.
name: Halpern, Nicole Yunger
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We review recent work on the foundations of thermodynamics in the light of quantum information theory. We adopt a resource-theoretic perspective, wherein thermodynamics is formulated as a theory of what agents can achieve under a particular restriction, namely, that the only state preparations and transformations that they can implement for free are those that are thermal at some fixed temperature. States that are out of thermal equilibrium are the resources. We consider the special case of this theory wherein all systems have trivial Hamiltonians (that is, all of their energy levels are degenerate). In this case, the only free operations are those that add noise to the system (or implement a reversible evolution) and the only nonequilibrium states are states of informational nonequilibrium, that is, states that deviate from the maximally mixed state. The degree of this deviation we call the state's nonuniformity; it is the resource of interest here, the fuel that is consumed, for instance, in an erasure operation. We consider the different types of state conversion: exact and approximate, single-shot and asymptotic, catalytic and noncatalytic. In each case, we present the necessary and sufficient conditions for the conversion to be possible for any pair of states, emphasizing a geometrical representation of the conditions in terms of Lorenz curves. We also review the problem of quantifying the nonuniformity of a state, in particular through the use of generalized entropies. Quantum state conversion problems in this resource theory can be shown to be always reducible to their classical counterparts, so that there are no inherently quantum-mechanical features arising in such problems. This body of work also demonstrates that the standard formulation of the second law of thermodynamics is inadequate as a criterion for deciding whether or not a given state transition is possible.
description: 51 pages, 9 figures, Revised Version
On Extend-Only Directed Posets and Derived Byzantine-Tolerant Replicated Data Types (Extended Version)
Creators: name: Jacob, Florian
name: Hartenstein, Hannes
Publisher: name: arXiv
Year: 2023
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: We uncover the extend-only directed posets (EDP) structure as a unification of recently discussed DAG-based Byzantine-tolerant conflict-free replicated data types (CRDT). We also show how a key-value map model can be derived from the EDP formulation, and give an outlook on an EDP-based systemic access control CRDT as a formalization of the CRDT used in the Matrix messaging system.
description: With the inclusion of an appendix of a formalization and CRDT proof sketch of an EDP-based CRDT with systemic access control, this is an extended version of the paper presented at the 10th Workshop on Principles and Practice of Consistency for Distributed Data (PaPoC), 2023-05-08, Rome, Italy
An edge-weighted hook formula for labelled trees
Creators: name: Féray, Valentin
name: Goulden, I. P.
name: Lascoux, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05A19, 05E10

description: A number of hook formulas and hook summation formulas have previously appeared, involving various classes of trees. One of these classes of trees is rooted trees with labelled vertices, in which the labels increase along every chain from the root vertex to a leaf. In this paper we give a new hook summation formula for these (unordered increasing) trees, by introducing a new set of indeterminates indexed by pairs of vertices, that we call edge weights. This new result generalizes a previous result by Féray and Goulden, that arose in the context of representations of the symmetric group via the study of Kerov's character polynomials. Our proof is by means of a combinatorial bijection that is a generalization of the Prüfer code for labelled trees.
description: 25 pages, 9 figures. Author-produced copy of the article to appear in Journal of Combinatorics, including referee's suggestions
title: Jahresbilanz
Creators: name: Planck, Dieter
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 25, Nr. 1 (1996), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Superconducting Phase of $\mathrm{Ti_xO_y}$ Thin Films Grown by Molecular Beam Epitaxy
Creators: name: Ozbek, Yasemin
name: Brooks, Cooper
name: Al-Tawhid, Athby
name: Zhang, Xuanyi
name: Stoica, Vladmir
name: Zhang, Zhan
name: Kumah, Divine P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate the complex relationship between the growth conditions and the structural and transport properties of $\mathrm{Ti_xO_y}$ thin films grown by molecular beam epitaxy. Transport properties ranging from metallicity to superconductivity and insulating states are stabilized by effectively tuning the O/Ti ratio via the Ti flux rate and the O partial pressure, $P_{Ox}$, for films grown on (0001)-$\mathrm{Al_2 O_3}$ substrates at 850$^{\circ}$ C. A cubic $c-\mathrm{TiO_{1\pmδ}}$ buffer layer is formed for low O/Ti ratios while a corundum cr-$\mathrm{Ti_2 O_3}$ layer is formed under higher oxidizing conditions. Metallicity is observed for c-$\mathrm{TiO_{1-δ}}$ buffer layers. The superconducting $\mathrm{γ-Ti_3 O_5}$ Magnéli phase is found to nucleate on a c-$\mathrm{TiO_{1-δ}}$ buffer for intermediate $P_{Ox}$ conditions and an insulator-superconducting transition is observed at 4.5 K (T$_C^{onset}=6 K$) for 85 nm thick films. Strain relaxation of the $\mathrm{γ-Ti_3 O_5}$ occurs with increasing film thickness and correlates with a thickness-dependent increase in T$_C$ observed for $\mathrm{Ti_xO_y}$ thin films.
Mobilizing Maidan: Civil Societies in Russia and Ukraine on the Eve of the Soviet Collapse
Creators: name: Novikov, Daria
Publisher: name: Stanford Digital Repository
Year: 2023
Subjects: subject: Civil society
subject: Ukraine
subject: Perestroĭka
subject: Glasnost
subject: 1985-1991
subject: Russia

description: This thesis examines the differences between Ukrainian and Russian civil societies between 1985 and 1991. Contributing to a field of study on pre-collapse civil societies, this thesis attempts to explain why Ukraine and Russia took different paths after the Soviet Union’s dissolution. That is, why Ukraine saw two popular revolutions against unpopular, dictatorially-inclined leaders, and Russian civil society continues to live under Putin’s regime. Using KGB archives and contemporary social surveys, this study presents a comparison of each country’s civil society during Gorbachev’s reforms, finding two crucial differences. First, Russia’s civil society lacked a nationally evocative movement, impeding it from unification, whereas Ukraine’s developed rapidly after Chernobyl, unifying under anti-Soviet sentiment. Second, Russia’s status as the “ruler” resulted in the development of anti-Moscow attitudes among Ukrainians, but also inhibited the formation of its civil society. This thesis explains why and how these trends came to be in the Gorbachev era.
Symmetry relations revealed in Mueller Matrix hemispherical maps
Creators: name: Brown, Adrian J.
name: Xie, Yu
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The hemispherical Mueller matrix map for light reflected from a plane-parallel planetary atmosphere is shown to obey several symmetry properties that provide a straightforward method to check their physical realizability. The mirror scattering relation and the reciprocity relation are employed to support the symmetry rules for hemispherical Mueller matrix maps. Additionally, two classes of experiments are identified in which the symmetry rules can be applied, namely, when the incident beam is at zenith and off- zenith angles and the scattering particles are spheres and randomly oriented hexagonal particles.
description: 17 pages, 4 figures
title: Wildbad und seine verschwundene Pracht
Creators: name: Hannmann, Eckart
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 25, Nr. 1 (1996), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: Badewesen und Bäderbauten in Badenweiler
Creators: name: Kirch, Peter
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 25, Nr. 1 (1996), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: Neue Veröffentlichungen des Landesdenkmalamtes Baden-Württemberg
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 25, Nr. 1 (1996), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Propagating spatially-varying multiplicative shear bias to cosmological parameter estimation for stage-IV weak-lensing surveys
Creators: name: Cragg, Casey
name: Duncan, Christopher A. J.
name: Miller, Lance
name: Alonso, David
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We consider the bias introduced by a spatially-varying multiplicative shear bias (m-bias) on tomographic cosmic shear angular power spectra. To compute the bias in the power spectra, we estimate the mode-coupling matrix associated with an m-bias map using a computationally-efficient pseudo-Cl method. This allows us to consider the effect of the m-bias to high l. We then conduct a Fisher matrix analysis to forecast resulting biases in cosmological parameters. For a Euclid-like survey with a spatially-varying m-bias, with zero mean and rms of 0.01, we find that parameter biases reach a maximum of ~10% of the expected statistical error, if multipoles up to l_max = 5000 are included. We conclude that the effect of the spatially-varying m-bias may be a sub-dominant but potentially non-negligible contribution to the error budget in forthcoming weak lensing surveys. We also investigate the dependence of parameter biases on the amplitude and angular scale of spatial variations of the m-bias field, and conclude that requirements should be placed on the rms of spatial variations of the m-bias, in addition to any requirement on the mean value. We find that, for a Euclid-like survey, biases generally exceed ~30% of the statistical error for m-bias rms 0.02 - 0.03 and can exceed the statistical error for rms ~0.04 - 0.05. This allows requirements to be set on the permissible amplitude of spatial variations of the m-bias that will arise due to systematics in forthcoming weak lensing measurements.
description: 12 pages, 8 figures
title: Editorial
Creators: name: Leutheußer-Holz, Sabine
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 25, Nr. 2 (1996), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Nucleon decay via dimension 6 operators in anomalous U(1)_A SUSY GUT
Creators: name: Maekawa, Nobuhiro
name: Muramatsu, Yu
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Nucleon lifetimes for various decay modes via dimension 6 operators are calculated in the anomalous $U(1)_A$ GUT scenario, in which the unification scale $Λ_u$ becomes smaller than the usual supersymmetric (SUSY) unification scale $Λ_G=2\times 10^{16}$ GeV in general. Since the predicted lifetime $τ(p\rightarrow π^0+e^c)$ becomes around the experimental lower bound though it is strongly dependent on the explicit models, the discovery of the nucleon decay in near future can be expected. We explain why the two ratios $R_1\equiv\frac{Γ_{n \rightarrow π^0 + ν^c}}{Γ_{p \rightarrow π^0 + e^c}}$ and $R_2\equiv\frac{Γ_{p \rightarrow K^0 + μ^c}}{Γ_{p \rightarrow π^0 + e^c}}$ are important in identifying grand unification group and we show that three anomalous $U(1)_A$ SUSY GUT models with $SU(5)$, $SO(10)$ and $E_6$ grand unification group can be identified by measuring the two ratios. If $R_1$ is larger than $0.4$, the grand unification group is not $SU(5)$, and moreover if $R_2$ is larger than $0.3$, the grand unification group is implied to be $E_6$.
description: 25 pages, 5 figures, v2:replace figures by colored figures, v3:final version to be published in PRD
Fractional revivals of superposed coherent states
Creators: name: Rohith, M.
name: Sudheesh, C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the dynamics of superposed wave packets in a specific nonlinear Hamiltonian which models the wave packet propagation in Kerr-like media and the dynamics of Bose-Einstein condensates. We show the dependence of initial wave packet superposition on fractional revival times using analysis based on the expectation values, Rényi entropy and Wigner function. We also show how the selective identification of fractional revivals using moments of appropriate observables depends on the number of wave packets present in the initial state.
title: Neu aufgefundene Panoramatapeten
Creators: name: Kendel, Christiane
name: Stopfel, Wolfgang
name: Zimdars, Dagmar
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 25, Nr. 2 (1996), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Pretrained Embeddings for E-commerce Machine Learning: When it Fails and Why?
Creators: name: Xu, Da
name: Yang, Bo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The use of pretrained embeddings has become widespread in modern e-commerce machine learning (ML) systems. In practice, however, we have encountered several key issues when using pretrained embedding in a real-world production system, many of which cannot be fully explained by current knowledge. Unfortunately, we find that there is a lack of a thorough understanding of how pre-trained embeddings work, especially their intrinsic properties and interactions with downstream tasks. Consequently, it becomes challenging to make interactive and scalable decisions regarding the use of pre-trained embeddings in practice. Our investigation leads to two significant discoveries about using pretrained embeddings in e-commerce applications. Firstly, we find that the design of the pretraining and downstream models, particularly how they encode and decode information via embedding vectors, can have a profound impact. Secondly, we establish a principled perspective of pre-trained embeddings via the lens of kernel analysis, which can be used to evaluate their predictability, interactively and scalably. These findings help to address the practical challenges we faced and offer valuable guidance for successful adoption of pretrained embeddings in real-world production. Our conclusions are backed by solid theoretical reasoning, benchmark experiments, as well as online testings.
Presentation format affects the behavioural and neural processing costs of sentence reinterpretation
Creators: name: Blott, Lena M.
name: Rodd, Jennifer M.
name: Warren, Jane E.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Although listening to speech and reading text rely on different lower-order cognitive and neural processes, much of the literature on higher-order comprehension assumes engagement of a common conceptual-semantic system which is unaffected by input modality. However, few studies have tested this assumption directly. Moreover, many neuroimaging studies of reading present sentences in an artificial, cognitively demanding word-by-word rapid serial visual presentation (RSVP) format. We report behavioural and fMRI experiments investigating whether presentation format (Spoken, Written, or RSVP) modulates commonly reported behavioural and neural costs associated with reinterpretation of sentences that contain lexical ambiguities. Reinterpretation-related processing costs were exaggerated in the RSVP format, both for response times on a behavioural task and neural activation in left inferior frontal gyrus. Presentation format can interact with higher-order language processes in complex ways, and we urge language researchers to carefully consider the role of presentation format in study design and interpretation of research findings.
Theory of Quantum Friction
Creators: name: Silveirinha, Mario G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Here, we develop a comprehensive quantum theory for the phenomenon of quantum friction. Based on a theory of macroscopic quantum electrodynamics for unstable systems, we calculate the quantum expectation of the friction force, and link the friction effect to the emergence of system instabilities related to the Cherenkov effect. These instabilities may occur due to the hybridization of particular guided modes supported by the individual moving bodies, and selection rules for the interacting modes are derived. It is proven that the quantum friction effect can take place even when the interacting bodies are lossless and made of nondispersive dielectrics.
description: published in New Journal Physics, 2014 (in press)
SuperYang-Mills, Chern-Simons couplings and their all order $α'$ corrections in IIB superstring theory
Creators: name: Hatefi, Ehsan
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We explore the closed form of the correlation function of four spin operators (including one closed string Ramond-Ramond (RR) and two open string fermions) and one current in ten dimensions, to be able to find the complete and the closed form of the amplitude of one closed string Ramond-Ramond, one gauge field and two fermionic strings (with the same chirality) to all orders in $α'$ in IIB superstring theory. In particular we use a special gauge fixing to the amplitude and apply fermions' equations of motion to $$ correlator. String amplitude induced that neither there should be any $u-$channel gauge poles for $p=n+2$ case nor there are couplings between two fermions and two gauge fields for $p=n$ case in the field theory of type IIB. All infinite $u-$ channel scalar poles and $t,s-$channel fermion poles of the string amplitude are useful in discovering new couplings of type IIB. More specifically, by making use of the SYM couplings of one scalar, one gauge and two fermions and their all order $α'$ higher derivative corrections, we are able to exactly produce all infinite $(s+t+u)-$ channel scalar poles of $$ .
description: 25 pages, no figure,Latex file,v3: one reference is added. To appear in EPJC
title: Die beweglichen Kulturdenkmale in Baden-Württemberg
Creators: name: Stangl, Anja
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 25, Nr. 2 (1996), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
The influence of predictability, visual contrast, and preview validity on eye movements and N400 amplitude: co-registration evidence that the N400 reflects late processes
Creators: name: Burnsky, Jon
name: Kretzschmar, Franziska
name: Mayer, Erika
name: Staub, Adrian
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Two eye movement/EEG co-registration experiments investigated effects of predictability, visual contrast, and parafoveal preview in normal reading. Replicating previous studies, in Experiment 1 contrast and predictability additively influenced fixation durations, and in Experiment 2 invalid preview eliminated the predictability effect on early eye movement measures. In both experiments, predictability influenced the amplitude of the N400 component of the fixation-related potential. In Experiment 1, visual contrast did not influence the N400, and in Experiment 2, the effect of predictability on the N400 was larger with invalid preview, in opposition to the eye movement pattern. The N400 may reflect a late process of accessing conceptual representations while the duration of the eyes’ fixation on a word is sensitive to the difficulty of perceptual encoding and early stages of word recognition. The effects of predictability on both fixation duration and the N400 suggest an influence of this variable at two distinct processing stages.
Quantum cluster algebra structures on quantum nilpotent algebras
Creators: name: Goodearl, K. R.
name: Yakimov, M. T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Algebra (math.QA)
subject: Combinatorics (math.CO)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: Primary 16T20, Secondary 13F60, 17B37, 14M15

description: All algebras in a very large, axiomatically defined class of quantum nilpotent algebras are proved to possess quantum cluster algebra structures under mild conditions. Furthermore, it is shown that these quantum cluster algebras always equal the corresponding upper quantum cluster algebras. Previous approaches to these problems for the construction of (quantum) cluster algebra structures on (quantized) coordinate rings arising in Lie theory were done on a case by case basis relying on the combinatorics of each concrete family. The results of the paper have a broad range of applications to these problems, including the construction of quantum cluster algebra structures on quantum unipotent groups and quantum double Bruhat cells (the Berenstein-Zelevinsky conjecture), and treat these problems from a unified perspective. All such applications also establish equality between the constructed quantum cluster algebras and their upper counterparts. The proofs rely on Chatters' notion of noncommutative unique factorization domains. Toric frames are constructed by considering sequences of homogeneous prime elements of chains of noncommutative UFDs (a generalization of the construction of Gelfand-Tsetlin subalgebras) and mutations are obtained by altering chains of noncommutative UFDs. Along the way, an intricate (and unified) combinatorial model for the homogeneous prime elements in chains of noncommutative UFDs and their alterations is developed. When applied to special families, this recovers the combinatorics of Weyl groups and double Weyl groups previously used in the construction and categorification of cluster algebras. It is expected that this combinatorial model of sequences of homogeneous prime elements will have applications to the unified categorification of quantum nilpotent algebras.
description: Final version; accepted for Memoirs Amer. Math. Soc. Minor corrections; running example added; references updated; index added (requires MakeIndex and additional LaTeX runs)
The $Higgs\to b\bar{b}, c\bar{c}, gg$ measurement at CEPC
Creators: name: Zhu, Yongfeng
name: Cui, Hanhua
name: Ruan, Manqi
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Accurately measuring the properties of the Higgs boson is one of the core physics objectives of the Circular Electron Positron Collider (CEPC). As a Higgs factory, the CEPC is expected to operate at a centre-of-mass energy of $240\,GeV$, deliver an integrated luminosity of $5.6\,ab^{-1}$, and produce one million Higgs bosons according to the CEPC Conceptual Design Report (CDR). Combining measurements of the $\ell^+\ell^-H$, $ν\barν H$, and $q\bar{q}H$ channels, we conclude that the signal strength of $H\to b\bar{b}/c\bar{c}/gg$ can be measured with a relative accuracy (statistic uncertainty only) of 0.27\%/4.03\%/1.56\%. Extrapolating to the recently released TDR operating parameters corresponding to the integrated luminosity of $20\,ab^{-1}$, the relative accuracy of $H\to b\bar{b}/c\bar{c}/gg$ signal strength is 0.14\%/2.13\%/0.82\%. We analyze the dependence of the expected accuracies on the critical detector performances: Color Singlet Identification (CSI) for the $q\bar{q}H$ channel and flavor tagging for both $ν\barν H$ and $q\bar{q}H$ channels. We observe that compared to the baseline CEPC detector performance, ideal flavor tagging increases the $H\to b\bar{b}/c\bar{c}/gg$ signal strength accuracy by 2\%/63\%/13\% in the $ν\barν H$ channel and 35\%/122\%/181\% in the $q\bar{q}H$ channel. In addition, better performance of CSI can significantly improve the anticipated accuracy of signal strength. The relevant systematics are also discussed in this paper.
Breaking Barriers in the Metaverse: A Comprehensive Exploration of Accessibility for Users with Disabilities --- Online Appendix
Creators: name: Di Dario, Dario
name: Sellitto, Giulia
name: Pentangelo, Viviana
name: Fede, Maria Lucia
name: Ferrucci, Filomena
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 461202
subject: Empirical software engineering

description: In the post-pandemic era, more and more people are turning to virtual spaces for entertainment, work, education, and social interaction. Despite such excitement, serious concerns have arisen about the accessibility and inclusion of individuals with disabilities in the new digital realm. In this paper, we perform a Systematic Literature Review (SRL) to identify the set of challenges that people with disabilities experience when interested in accessing the metaverse. We gather the solutions proposed in the literature to provide a complete understanding of the accessibility in the current metaverse platforms. We distill a number of take-away messages encouraging researchers and practitioners to further work on the matter to finally empower people with disabilities to fully enjoy the metaverse experience.
A test of letter configuration coding in visual word recognition
Creators: name: Snell, Joshua
name: Simons, Matthew
name: Warlo, Leonie
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Neuroscience
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Most models of word recognition assume that a letter’s identity and position are conjointly encoded. This means that in words with repeated letters (e.g. “radar”), each instance of the same letter is coded as a separate object. Here we tested an alternative scenario, according to which the brain employs configurational representations (e.g. recognition of three units in the configuration 12321 activating “radar”). Such representations explain why one sees similarities between “radar” and “tenet”, and would offer an efficient way to compute letter repetitions. In two experiments, target word recognition was tested as a function of different-symbol primes that were configurationally congruent (“kgegk”—“radar”) or not (“kggke”—“radar”). We reasoned that if the brain indeed engages configuration codes, congruent primes should facilitate target recognition compared to incongruent primes. However, Bayesian statistical analyses provided strong evidence for the null-hypothesis. We surmise that the brain does not engage configuration codes in word recognition.
Quantum spin systems on infinite lattices
Creators: name: Naaijkens, Pieter
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This is an extended and corrected version of lecture notes originally written for a one semester course at Leibniz University Hannover. The main aim of the notes is to give an introduction to the mathematical methods used in describing discrete quantum systems consisting of infinitely many sites. Such systems can be used, for example, to model the materials in condensed matter physics. The notes provide the necessary background material to access recent literature in the field. Some of these recent results are also discussed. The contents are roughly as follows: (1) quick recap of essentials from functional analysis, (2) introduction to operator algebra, (3) algebraic quantum mechanics, (4) infinite systems (quasilocal algebra), (5) KMS and ground states, (6) Lieb-Robinson bounds, (7) algebraic quantum field theory, (8) superselection sectors of the toric code, (9) Haag-Ruelle scattering theory in spin systems, (10) applications to gapped phases. The level is aimed at students who have at least had some exposure to (functional) analysis and have a certain mathematical "maturity".
description: To be published in Lecture Notes in Physics (Springer). v2: extended and corrected. 157 pages
Phased array beamforming methods for powering biomedical ultrasonic implants
Creators: name: Benedict, Braeden C.
name: Ghanbari, Mohammad Meraj
name: Muller, Rikky
Publisher: name: arXiv
Year: 2022
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Millimeter-scale implants using ultrasound for power and communication have been proposed for a range of deep-tissue applications, including neural recording and stimulation. However, published implementations have shown high sensitivity to misalignment with the external ultrasound transducer. Ultrasonic beamforming using a phased array to these implants can improve tolerance to misalignment, reduce implant volume, and allow multiple implants to be operated simultaneously in different locations. This paper details the design of a custom planar phased array ultrasound system, which is capable of steering and focusing ultrasound power within a 3D volume. Analysis and simulation is performed to determine the choice of array element pitch, with special attention given to maximizing the power available at the implant while meeting FDA limits for diagnostic ultrasound. Time reversal is proposed as a computationally simple approach to beamforming that is robust despite scattering and inhomogeneity of the acoustic medium. This technique is demonstrated both in active drive and pulse-echo modes, and it is experimentally compared with other beamforming techniques by measuring energy transfer efficiency. Simultaneous power delivery to multiple implants is also demonstrated.
description: 10 pages, 13 figures, to be published in the IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. Replacement made after additions/edits suggested during review
title: Zur bevorstehenden Instandsetzung der Burg Neipperg
Creators: name: Fekete, Julius
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 25, Nr. 3 (1996), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Abstract representations in temporal cortex support generative linguistic processing
Creators: name: Gow, David W.
name: Avcu, Enes
name: Schoenhaut, Adriana
name: Sorensen, David O.
name: Ahlfors, Seppo P.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Cell Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Generativity, the ability to create and evaluate novel constructions, is a fundamental property of human language and cognition. The productivity of generative processes is determined by the scope of the representations they engage. Here we examine the neural representation of reduplication, a productive phonological process that can create novel forms through patterned syllable copying (e.g. ba-mih → ba-ba-mih, ba-mih-mih, or ba-mih-ba). Using MRI-constrained source estimates of combined MEG/EEG data collected during an auditory artificial grammar task, we identified localised cortical activity associated with syllable reduplication pattern contrasts in novel trisyllabic nonwords. Neural decoding analyses identified a set of predominantly right hemisphere temporal lobe regions whose activity reliably discriminated reduplication patterns evoked by untrained, novel stimuli. Effective connectivity analyses suggested that sensitivity to abstracted reduplication patterns was propagated between these temporal regions. These results suggest that localised temporal lobe activity patterns function as abstract representations that support linguistic generativity.
title: Neuerscheinungen
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 25, Nr. 4 (1996), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: Veröffentlichungen des Landesdenkmalamtes Baden-Württemberg
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 25, Nr. 4 (1996), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Towards European Standards for Quantum Technologies
Creators: name: van Deventer, O.
name: Spethmann, N.
name: Loeffler, M.
name: Amoretti, M.
name: Brink, R. van den
name: Bruno, N.
name: Comi, P.
name: Farrugia, N.
name: Gramegna, M.
name: Kassenberg, B.
name: Kozlowski, W.
name: Länger, T.
name: Lindstrom, T.
name: Martin, V.
name: Neumann, N.
name: Papadopoulos, H.
name: Pascazio, S.
name: Peev, M.
name: Pitwon, R.
name: Rol, M. A.
name: Traina, P.
name: Venderbosch, P.
name: Wilhelm-Mauch, F. K.
name: Jenet, A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The Second Quantum Revolution facilitates the engineering of new classes of sensors, communication technologies, and computers with unprecedented capabilities. Supply chains for quantum technologies are emerging, some focussed on commercially available components for enabling technologies and/or quantum-technologies research infrastructures, others with already higher technology-readiness levels, near to the market. In 2018, the European Commission has launched its large-scale and long-term Quantum Flagship research initiative to support and foster the creation and development of a competitive European quantum technologies industry, as well as the consolidation and expansion of leadership and excellence in European quantum technology research. One of the measures to achieve an accelerated development and uptake has been identified by the Quantum Flagship in its Strategic Research Agenda: the promotion of coordinated, dedicated standardisation and certification efforts. Standardisation is indeed of paramount importance to facilitate the growth of new technologies, and the development of efficient and effective supply chains. The harmonisation of technologies, methodologies, and interfaces enables interoperable products, innovation, and competition, all leading to structuring and hence growth of markets. As quantum technologies are maturing, time has come to start thinking about further standardisation needs. This article presents insights on standardisation for quantum technologies from the perspective of the CEN-CENELEC Focus Group on Quantum Technologies (FGQT), which was established in June 2020 to coordinate and support the development of standards relevant for European industry and research.
Detection of Mechanical Deformation Induced by Ultrafast Laser Irradiation upon a Metallic Cantilever
Creators: name: Ichikawa, Takuto
name: Abulikemu, Aizitiaili
name: Hase, Muneaki
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this work, we systematically investigated the ultrafast optical properties of aluminum (Al) thin films on silicon cantilevers using a microscopic femtosecond optical pump-probe technique to explore the effect of light irradiation upon cantilevers while considering radiation pressure and photothermal effects. The ultrafast laser pulses used for the study were less than 30 fs in pulse duration and 830 nm in wavelength, and the photon energy (1.49 eV) of the light pulses is close to the interband transition threshold (ITT) of Al. Therefore, the change in ITT due to the strain of the cantilevers induced by the light irradiation is detected through the change in the transient reflectivity, which is dominated by the thermalized (Th) electron signal. We uncovered the position dependency of the transient reflectivity change and the Th electronic signal amplitude of the 100 nm-thick Al films on 160 $μ$m, 200 $μ$m and 240 $μ$m-length cantilevers, and these results are in excellent agreement with two temperature model-based curve fits. Furthermore, to understand the effect of light irradiation, we derived equations for the position-dependent radiation pressure effect and the photothermal effect, and demonstrated that thermal expansion-induced changes in ITT dominate the position dependence of the signal intensity. Our findings offer avenues for exploring strain effects on ultrafast properties and applications for ultrafast scanning probe microscopy.
description: 10 pages, 5 figures
Quasar broad absorption line variability measurements using reconstructions of un-absorbed spectra
Creators: name: Wildy, Conor
name: Goad, Michael R.
name: Allen, James T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a two-epoch Sloan Digital Sky Survey and Gemini/GMOS+William Herschel Telescope/ISIS variability study of 50 broad absorption line quasars of redshift range 1.9 < z < 4.2, containing 38 Si IV and 59 C IV BALs and spanning rest-frame time intervals of approximately 10 months to 3.7 years. We find that 35/50 quasars exhibit one or more variable BALs, with 58% of Si IV and 46% of C IV BALs showing variability across the entire sample. On average, Si IV BALs show larger fractional change in BAL pseudo equivalent width than C IV BALs, as referenced to an unabsorbed continuum+emission-line spectrum constructed using non-negative matrix factorisation. No correlation is found between BAL variability and quasar luminosity, suggesting that ionizing continuum changes do not play a significant role in BAL variability (assuming the gas is in photoionization equilibrium with the ionizing continuum). A subset of 14 quasars have one variable BAL from each of Si IV and C IV with significant overlap in velocity space and for which variations are in the same sense (strengthening or weakening) and which appear to be correlated (98% confidence). We find examples of both appearing and disappearing BALs in weaker/shallower lines with disappearance rates of 2.3% for C IV and 5.3% for Si IV, suggesting average lifetimes of 142 and 43 years respectively. We identify 5 objects in which the BAL is coincident with the broad emission-line, but appears to cover only the continuum source. Assuming a clumpy inhomogeneous absorber model and a typical size for the continuum source, we infer a maximum cloud radius of 10^13 to 10^14 cm, assuming Eddington limited accretion.
description: Accepted for publication in MNRAS. 22 pages, 12 figures, 7 tables
title: Zur Lichtführung in der Alexanderkirche zu Marbach am Neckar
Creators: name: Breuer, Judith
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 26, Nr. 1 (1997), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Adiabatic amplification of energy and magnetic moment of a charged particle after the magnetic field inversion
Creators: name: Dodonov, Viktor V.
name: Dodonov, Alexandre V.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the evolution of the energy and magnetic moment of a quantum charged particle placed in a homogeneous magnetic field, when this field changes adiabatically its sign. We show that after a single magnetic field passage through zero value, the famous adiabatic invariant ratio of energy to frequency is reestablished again, but with the proportionality coefficient higher than in the initial state. The concrete value of this proportionality coefficient depends on the power index of the frequency dependence on time near zero point. In particular, the adiabatic ratio of the initial ground state (with zero radial and angular quantum numbers) triplicates if the frequency tends to zero linearly as function of time. If the Larmor frequency attains zero more than once, the adiabatic proportionality coefficient strongly depends on the lengths of the time intervals between zero points, so that the mean energy behavior can be quasi-stochastic after many passages through zero value. The original Born-Fock adiabatic theorem does not work after the frequency passes through zero. However, its generalization is found: the initial Fock state becomes a wide superposition of many instantaneous Fock states, whose weights do not depend on time in the new adiabatic regime.
description: 15 pages, 3 figures
title: Inhalt
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 26, Nr. 3 (1997), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4