cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Singular integrals along lacunary directions in $\mathbb{R}^n$
Creators: name: Accomazzo, Natalia
name: Di Plinio, Francesco
name: Parissis, Ioannis
Publisher: name: arXiv
Year: 2019
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 42B20

description: A recent result by Parcet and Rogers is that finite order lacunarity characterizes the boundedness of the maximal averaging operator associated to an infinite set of directions in $\mathbb{R}^n$. Their proof is based on geometric-combinatorial coverings of fat hyperplanes by two-dimensional wedges. Seminal results by Nagel-Stein-Wainger relied on geometric coverings of n-dimensional nature. In this article we find the sharp cardinality estimate for singular integrals along finite subsets of finite order lacunary sets in all dimensions. Previous results only covered the special case of the directional Hilbert transform in dimensions two and three. The proof is new in all dimensions and relies, among other ideas, on a precise covering of the n-dimensional Nagel-Stein-Wainger cone by two-dimensional Parcet-Rogers wedges.
description: 18 pages, 1 figure. Final version to appear in Adv. Math
title: Mosbach im späten Mittelalter und in der frühen Neuzeit. Neue Erkenntnisse zum Fachwerkbau in Baden
Creators: name: Cypionka, Ruth
name: Lohrum, Burghard
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 40, Nr. 2 (2011), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Electronic structure, magnetism and high-temperature superconductivity in the multi-layer octagraphene and octagraphite
Creators: name: Li, Jun
name: Jin, Shangjian
name: Yang, Fan
name: Yao, Dao-Xin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We systematically investigate the electronic structure, magnetism and high-temperature superconductivity (SC) in the multi-layer octagraphene and octagraphite (bulk octagraphene). A tight binding model is used to fit the electronic structures of single-layer, multi-layer octagraphenes and octagraphite. We find that the multi-layer octagraphene and octagraphite follow a simple A-A stacking structure from the energy analysis. The van der Waals interaction induces $t_{\perp}\approx0.25$ eV and the hopping integrals within each layers changes little when the layer number $n$ increases. There is a well Fermi-surface nesting with nesting vector $\mathbf{Q}=(π,π)$ for the single-layer octagraphene at half-filling, which can induce a 2D Néel antiferromagnetic order. With increasing the layer number $n\rightarrow\infty$, the Fermi-surface nesting transforms to 3D with nesting vector $\mathbf{Q}=(π,π,π)$ and shows the system has a 3D Néel antiferromagnetic order. Upon doping, the multi-layer octagraphene and octagraphite can enter a high-temperature $s^{\pm}$ SC driven by spin fluctuation. We evaluate the superconducting transition temperature $T_c$ by using the random-phase approximation (RPA), which yields a high $T_c$ even if the layer number $n\geq$ 3. Our study shows that the multi-layer octagraphene and octagraphite are promising candidates for realizing the high-temperature SC.
title: Parties, Candidates, and Social Media in the 2015 UK General Election
title: Twitter and the Public Sphere
titleType: Subtitle
Creators: name: Pillmoor, Helena
Publisher: name: Lancaster University
Year: 2022
Subjects: Social Media
Twitter
2015 General Election
parties
candidates
Public Sphere

description: This thesis was undertaken to examine the role of the social media forum, Twitter, in the 2015 UK general election. The research, conducted during the campaign, focused on the official party pages of the Conservatives, Labour, Liberal Democrats, and United Kingdom Independence Party (UKIP) and their candidates standing in target seats. The thesis contributes to an ongoing academic debate concerning the potential for the internet and social media to transform political communication. The theoretical framework draws on the work of the philosopher Jürgen Habermas and his concepts of ‘rational-critical debate’ and the ‘public sphere’. Although Habermas’ theory pre-dates the internet, his insights provide invaluable criteria by which the practical impact of social media, as opposed to its undeniable promise as a 'transformative' promoter of political debate in a liberal democracy, can be judged. I examine Twitter’s design architecture, which has been heavily influenced by its users and, at least in theory, constitutes an open forum for the free exchange of ideas and opinions envisaged by Habermas. Chapter Five explores the use of these features by the main UK parties in 2015. An analysis the content of the tweets in Chapter Six explores how the parties engaged with different election issues on the site, considering the extent to which they reacted to public opinion and events, or tried to retain control of this aspect of their campaigns. Chapter Seven examines the use of Twitter by individual candidates, reviewing their engagement with the site’s design features and their coverage of election issues. This chapter focuses on the potential conflict between the candidates’ roles as local campaigners and their status as representatives of the national parties. Overall, the findings arising from the empirical research suggested that the major parties regarded Twitter as a means of promoting their own favoured agendas rather than a venue for 'rational-critical debate'. Nevertheless, the site offers considerable potential for future research into the use of social media in political campaigning in the UK, while an analytical framework based on Habermas' ideas could usefully be applied to other internet platforms.
Alfvenic propagation: a key to nonlocal effects in magnetized plasmas
Creators: name: Sattin, F.
name: Escande, D. F.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A long standing puzzle in fusion research comes from experiments where a sudden peripheral electron temperature perturbation is accompanied by an almost simultaneous opposite change in central temperature, in a way incompatible with local transport models. This paper shows these experiments and similar ones are fairly well quantitatively reproduced, when induction effects are incorporated in the total plasma response, alongside standard local diffusive transport, as suggested in earlier work [V.D. Pustovitov, Plasma Phys. Control. Fusion {\bf 54}, 124036 (2012)].
description: After the publication of the paper we became aware of a fundamental error in the normalization of our equations. While at some places, plasma pressure was normalized to the magnetic energy density, at other places, plasma pressure and the plasma pressure source were normalized to the {\it equilibrium} plasma pressure. This involves that a $\beta$ factor was missing in some of the equations. By an unfortunate coincidence the different sources of error largely masked each other in the final results, thereby allowing the model to provide seemingly accurate conclusions. The correction of this error implies that the alleged MHD effects are smaller by a factor $\beta$, and cannot account for the phenomenology observed. This invalidates our conclusions
A metric approach to sparse domination
Creators: name: Alonso, José M. Conde
name: Di Plinio, Francesco
name: Parissis, Ioannis
name: Vempati, Manasa N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 42B20 (Primary), 42B25 (Secondary)

description: We present a general approach to sparse domination based on single-scale $L^p$-improving as a key property. The results are formulated in the setting of metric spaces of homogeneous type and avoid completely the use of dyadic-probabilistic techniques as well as of Christ-Hytönen-Kairema cubes. Among the applications of our general principle, we recover sparse domination of Dini-continuous Calderón-Zygmund kernels on spaces of homogeneous type, we prove a family of sparse bounds for maximal functions associated to convolutions with measures exhibiting Fourier decay, and we deduce sparse estimates for Radon transforms along polynomial submanifolds of $\mathbb R^n$.
description: 36 pages, submitted for publication. V2: improvement of the main results Theorems A and B; uniform bound on the truncations is now required for some L^p unrelated to the sparse exponents; upgraded to Dini modulus of continuity; L^{p_j} improving assumption simplified. Applications are unchanged but verification is simplified
Adaptive LASSO model selection in a multiphase quantile regression
Creators: name: Ciuperca, Gabriela
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: We propose a general adaptive LASSO method for a quantile regression model. Our method is very interesting when we know nothing about the first two moments of the model error. We first prove that the obtained estimators satisfy the oracle properties, which involves the relevant variable selection without using hypothesis test. Next, we study the proposed method when the (multiphase) model changes to unknown observations called change-points. Convergence rates of the change-points and of the regression parameters estimators in each phase are found. The sparsity of the adaptive LASSO quantile estimators of the regression parameters is not affected by the change-points estimation. If the phases number is unknown, a consistent criterion is proposed. Numerical studies by Monte Carlo simulations show the performance of the proposed method, compared to other existing methods in the literature, for models with a single phase or for multiphase models. The adaptive LASSO quantile method performs better than known variable selection methods, as the least squared method with adaptive LASSO penalty, $L_1$-method with LASSO-type penalty and quantile method with SCAD penalty.
title: Jakob Müller: Entstehung mittelalterlicher Siedlungsformen in Thüringen. Archäologische Untersuchungen im östlichen Teil des Keuperbeckens, Stuttgart 2002
Creators: name: Biermann, Felix
Publisher: name: University Library Heidelberg
Year: 2014

description: Rezension zu: Jakob Müller: Entstehung mittelalterlicher Siedlungsformen in Thüringen. Archäologische Untersuchungen im östlichen Teil des
Keuperbeckens, Weimarer Monographien zur Ur- und Frühgeschichte 37, hrsg. vom Thüringischen Landesamt für Archäologische Denkmalpflege durch Sigrid Dusek, Kommissionsverlag Konrad Theiss Verlag, Stuttgart 2002
How to set up on-farm crop trials testing microbial inoculants
Creators: name: Sibly, Will
Publisher: name: Zenodo
Year: 2022
Subjects: SolACEPA

description: Problem: There is increasing awareness of the environmentally harmful effects of artificial fertilizers used in crop production across Europe and beyond. On top of that, recent disruptions in global supply chains have led to dramatic increases in the price of manufactured fertilizers, making them less financially attractive to farmers. Growers are seeking more cost-effective and environmentally beneficial solutions to improve soil fertility, water and nutrient use efficiency, to ultimately build resilience through improving and maintaining quality of agricultural soils. Furthermore, the threat that climate change is posing to crop yield stability is increasing each year, with multiple abiotic and biotic stresses affecting crops with increasing frequency. Solution: Microbial inoculants (MI) are soil amendments containing beneficial microorganisms, able to promote crop health and growth. A wide range of MI products are available commercially, presented as inputs for crop production that increase soil fertility and nutrient accessibility in crops. MI can be easily applied to soils, seeds and crop roots, and are cheaper than more resource-intensive inputs. Furthermore, the contents of MI are biological and free from chemical products, lowering their environmental impact in contrast to manufactured nitrogen, phosphorus, and potassium fertilisers. The effects of MI on soil and crop health can vary depending on local environmental conditions and management. This means it is a good idea to test any products on-farm to determine if they will provide a benefit at a given location. Aimed at farmers, advisors and researchers thinking of carrying out their own on-farm trials testing MI, this practice abstract provides guidance to design trials that assess their impacts as a natural method to increase soil fertility, soil health and crop growth. Benefits: On-farm trials testing MI will help to determine if they are an easier, cheaper, and more practical alternative to conventional inputs and application methods. Moreover, testing MI on commercial farms will contribute to research into their efficacy. In the SolACE project, a range of MI products were trialled on farms, including commercial products available to buy online directly from suppliers
D1.3 Report and main conclusions of the biowaste collection
Creators: name: PREZERO
Publisher: name: Zenodo
Year: 2022
Subjects: biowaste
collection
urban

description: One of the main challenges of urban biowaste management is to integrate a valorisation system in a city context, and to recover strategic products with a market value that offsets the global cost of biowaste valorisation.
 To implement successful urban biowaste valorisation schemes to produce high value products with attractive and sustainable business cases, it is imperative to feed the processes with high quality biowaste in sufficient amount. This relies on efficient and successful biowaste selective collection systems which are scarce in Europe.
 This deliverable gathers the main insights of the pilot biowaste selective collection experience carried out in Murcia (Spain) in the VALUEWASTE project. The experience was performed from the end of February 2020 to April 2022 targeting two main types of customers: citizens and large producers of biowaste. The collected biowaste was transported to Murcia’s waste pre-treatment plant where it was converted into proteins and biofertilizers following the VALUEWASTE project valorisation scheme.
 The results obtained during the biowaste collection experience evidence that to achieve a successful biowaste collection, it is necessary to follow a specific process which is described in this report. We believe that this experience is useful in terms of replication by providing measures with recommendations and suggestions for the future implementation of biowaste valorising schemes. The process starts by deciding which day to launch the selective collection of biowaste in the selected area. Once that day has been chosen, there are a series of actions before and after that day.

 The experience gained in this pilot experience will be used for the extension of the selective collection in the entire municipality of Murcia.
 The actions proposed in this deliverable have been discussed and evaluated with other relevant stakeholders, resulting in the development of a CEN Workshop Agreement (“Key factors for the successful implementation of urban biowaste selective collection schemes1”), which is publicly available and can be found as an Annex to this document.
Stabilizing Spin Coherence Through Environmental Entanglement in Strongly Dissipative Quantum Systems
Creators: name: Bera, Soumya
name: Florens, Serge
name: Baranger, Harold U.
name: Roch, Nicolas
name: Nazir, Ahsan
name: Chin, Alex W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The key feature of a quantum spin coupled to a harmonic bath---a model dissipative quantum system---is competition between oscillator potential energy and spin tunneling rate. We show that these opposing tendencies cause environmental entanglement through superpositions of adiabatic and antiadiabatic oscillator states, which then stabilizes the spin coherence against strong dissipation. This insight motivates a fast-converging variational coherent-state expansion for the many-body ground state of the spin-boson model, which we substantiate via numerical quantum tomography.
description: 5 pages, 3 figures, supplementary file attached. This article supersedes arXiv:1301.7430
Computing Welfare-Maximizing Fair Allocations of Indivisible Goods
Creators: name: Aziz, Haris
name: Huang, Xin
name: Mattei, Nicholas
name: Segal-Halevi, Erel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: We analyze the run-time complexity of computing allocations that are both fair and maximize the utilitarian social welfare, defined as the sum of agents' utilities. We focus on two tractable fairness concepts: envy-freeness up to one item (EF1) and proportionality up to one item (PROP1). We consider two computational problems: (1) Among the utilitarian-maximal allocations, decide whether there exists one that is also fair; (2) among the fair allocations, compute one that maximizes the utilitarian welfare. We show that both problems are strongly NP-hard when the number of agents is variable, and remain NP-hard for a fixed number of agents greater than two. For the special case of two agents, we find that problem (1) is polynomial-time solvable, while problem (2) remains NP-hard. Finally, with a fixed number of agents, we design pseudopolynomial-time algorithms for both problems. We extend our results to the stronger fairness notions envy-freeness up to any item (EFx) and proportionality up to any item (PROPx).
description: Added experiments comparing dynamic programming to integer linear programming
BIMprove 4th Newsletter
Creators: name: BIMprove Consortium
Publisher: name: Zenodo
Year: 2022
Subjects: Newsletter, Usability Testing, eXtended Reality, Multi-User-Virtual-Reality (MUVR), Augmented Reality (AR), Building Information Modeling (BIM)

description: Our fourth newsletter including information about the main activities and achievements of the project during the last months.
Mulher, economia e segurança: vicissitudes da educação formal no contexto de terrorismo em Moçambique
Creators: name: Williamo, Sergia
name: Cambaza, Edgar Manuel
Publisher: name: Zenodo
Year: 2025

description: O terrorismo em Cabo Delgado tem provocado uma grave crise humanitária, resultando na deslocação forçada de mais de um milhão de pessoas, afetando particularmente as mulheres. O acesso à educação formal e ao empoderamento económico emergem como estratégias essenciais para mitigar as vulnerabilidades enfrentadas por mulheres deslocadas. A educação fornece habilidades e conhecimento que aumentam a resiliência, enquanto a autonomia financeira fortalece a segurança social e a estabilidade comunitária.
Rotational smoothing
Creators: name: Caro, Pedro
name: Meroño, Cristóbal J.
name: Parissis, Ioannis
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: Rotational smoothing is a phenomenon consisting in a gain of regularity by means of averaging over rotations. This phenomenon is present in operators that regularize only in certain directions, in contrast to operators regularizing in all directions. The gain of regularity is the result of rotating the directions where the corresponding operator performs the smoothing effect. In this paper we carry out a systematic study of the rotational smoothing for a class of operators that includes $k$-vector-space Riesz potentials in $\mathbb{R}^n$ with $k < n$, and the convolution with fundamental solutions of elliptic constant-coefficient differential operators acting on $k$-dimensional linear subspaces. Examples of the latter type of operators are the planar Cauchy transform in $\mathbb{R}^n$, or a solution operator for the transport equation in $\mathbb{R}^n$. The analysis of rotational smoothing is motivated by the resolution of some inverse problems under low-regularity assumptions.
description: 44 pages
title: [Zwei „Spitäler" des frühen 16. Jahrhunderts] Das „Neuhaus" des Heilig-Geist-Spitals in Ehingen, Alb-Donau-Kreis
Creators: name: Scholkmann, Klaus
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 12, Nr. 1 (1983), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Marginal Deformations of Non-Relativistic Field Theories
Creators: name: Mallayev, Davron
name: Vazquez-Poritz, Justin F.
name: Zhang, Zhibai
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct the supergravity duals of marginal deformations of a (0,2) Landau-Ginsburg theory that describes the supersymmetric lowest Landau level. These deformations preserve supersymmetry and it is proposed that they are associated with the introduction of a phase in the (0,2) superpotential. We also consider marginal deformations of various field theories that exhibit Schrodinger symmetry and Lifshitz scaling. This includes countably-infinite examples with dynamical exponent z=2 based on the Sasaki-Einstein spaces Y^{p,q} and L^{p,q,r}, as well as an example with general dynamical exponent z >= 1.
description: 20 pages, no figures, corrections and comments added
Introducing the Q-based interpretation of quantum theory
Creators: name: Friederich, Simon
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: This article outlines a novel interpretation of quantum theory: the Q-based interpretation. The core idea underlying this interpretation, recently suggested for quantum field theories by Drummond and Reid [2020], is to interpret the phase space function Q -- a transform of the better known Wigner function -- as a proper probability distribution, roughly analogous to the probability distribution ρin classical statistical mechanics.
 Here I motivate the Q-based interpretation, investigate whether it is empirically adequate, and outline some of its key conceptual features. I argue that the Q-based interpretation is attractive in that it promises having no measurement problem, is conceptually parsimonious and has the potential to apply elegantly to relativistic and field-theoretic contexts.
description: 26 pages, accepted for publication in British Journal for the Philosophy of Science
title: Topographische Arbeiten für die Landesarchäologie in Baden-Württemberg
Creators: name: Müller, Dieter
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 12, Nr. 2 (1983), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Organska proizvodnja sadnica za lekovito i aromatično bilje
Creators: name: Rochat, Armelle
name: Lefebvre, Nicolas
name: van den Berge, Paul
Publisher: name: Zenodo
Year: 2022
Subjects: aromatičnih i lekovitih biljaka
proizvodnja rasada
organska poljoprivreda

description: The technical guide provides practical information to organic seedling production. It helps to choose the most suitable system and – to those who are already growing seedlings – to provide valuable recommendations for improvements.
Conic structure of the non-negative operator convex functions on $(0,\infty)$
Creators: name: Franz, Uwe
name: Hiai, Fumio
Publisher: name: arXiv
Year: 2013
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47A56, 47A60

description: The conic structure of the convex cone of non-negative operator convex functions on $(0,\infty)$ (also on $(-1,1)$) is clarified. We completely determine the extreme rays, the closed faces, and the simplicial closed faces of this convex cone.
description: 18 pages
title: Industriearchäologische Bodendenkmale. Bodenurkunden zum Bergbau als Zeugnisse der Technik-, Wirtschafts- und Sozialgeschichte
Creators: name: Seidenspinner, Wolfgang
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 15, Nr. 3 (1986), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Maximal subspace averages
Creators: name: Di Plinio, Francesco
name: Parissis, Ioannis
Publisher: name: arXiv
Year: 2021
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 42B25 (Primary), 42B20 (Secondary)

description: We study maximal operators associated to singular averages along finite subsets $Σ$ of the Grassmannian $\mathrm{Gr}(d,n)$ of $d$-dimensional subspaces of $\mathbb R^n$. The well studied $d=1$ case corresponds to the the directional maximal function with respect to arbitrary finite subsets of $\mathrm{Gr}(1,n)=\mathbb S^{n-1}$. We provide a systematic study of all cases $1\leq d1$. In this context, we prove the best possible $L^2(\mathbb R^n)$-bound for the $(d,n)$-Nikodym maximal function for all combinations of dimension and codimension.
 Our estimates rely on Fourier analytic almost orthogonality principles, combined with polynomial partitioning, but we also use spatial analysis based on the precise calculation of intersections of $d$-dimensional plates in $\mathbb R^n$.
description: 40 pages, 1 figure, submitted for publication
Evaluation of the tools used to assess the quality of life in breast cancer survivors: A systematic Review
Creators: name: Mr. Faizan Kashoo
name: Potnis, Parimal
name: Shafi, Mohammed
name: Dr. Mudasir Rashid Baba
name: Dr. Vijaya Kumar K
name: Rishbha Tiku
name: Dr. Arun Krishnan M P
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Physical Sciences and Mathematics
subject: Medical Specialties
subject: Diseases
subject: Oncology
subject: Medicine and Health Sciences
subject: Rehabilitation and Therapy
subject: Eye Diseases
subject: Physiotherapy

description: Cancer is a disease that can begin in almost any organ or tissue of the body when abnormal cells proliferate uncontrollably, invade neighboring tissues or organs, and spread to other parts of the body. Breast cancer is the second most prevalent cancer in the world which affects 2.1 million women annually. The disease diagnosis itself affects patients' and their families' physical, psychological and emotional health, social lives, and employment. In addition, breast cancer treatments such as surgery, radiotherapy, chemotherapy, hormone therapy have greater side effects like uncontrolled nausea, vomiting and hair loss. This complex phenomenon has detrimental impact on the quality of life of breast cancer survivors. It is of crucial importance to focus on the Quality of life of breast cancer survivors for their overall well-being. Measuring Quality of life predicts the clinical outcomes and guides the clinician with management decisions in terms of modifying the intervention. As there are various assessment tools to measure health related quality of life in breast cancer survivors, this review aims to determine the most reliable and valid assessment tool to measure health related quality of life in breast cancer survivors for it to be used in clinical practice.
The Origin of Fat Tails
Creators: name: Gremm, Martin
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Finance (q-fin.GN)
subject: FOS: Economics and business

description: We propose a random walk model of asset returns where the parameters depend on market stress. Stress is measured by, e.g., the value of an implied volatility index. We show that model parameters including standard deviations and correlations can be estimated robustly and that all distributions are approximately normal. Fat tails in observed distributions occur because time series sample different stress levels and therefore different normal distributions. This provides a quantitative description of the observed distribution including the fat tails. We discuss simple applications in risk management and portfolio construction.
description: 17 Pages, 11 Figures, typos corrected
title: Der Ortskernatlas Baden-Württemberg
Creators: name: Deiseroth, Wolf
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 15, Nr. 3 (1986), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Lifting Group Actions, Equivariant Towers and Subgroups of Non-positively Curved Groups
Creators: name: Hanlon, Richard Gaelan
name: Martinez-Pedroza, Eduardo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Group Theory (math.GR)
subject: General Topology (math.GN)
subject: FOS: Mathematics
subject: 20F65, 20F67, 20E07, 57M07, 57M10

description: If $\mathcal C$ is a class of complexes closed under taking full subcomplexes and covers and $\mathcal G$ is the class of groups admitting proper and cocompact actions on one-connected complexes in $\mathcal C$, then $\mathcal G$ is closed under taking finitely presented subgroups. As a consequence the following classes of groups are closed under taking finitely presented subgroups: groups acting geometrically on regular $CAT(0)$ simplicial complexes of dimension $3$, $k$-systolic groups for $k\geq 6$, and groups acting geometrically on $2$-dimensional negatively curved complexes. We also show that there is a finite non-positively curved cubical $3$-complex which is not homotopy equivalent to a finite non-positively curved regular simplicial $3$-complex. We included other applications to relatively hyperbolic groups and diagramatically reducible groups. The main result is obtained by developing a notion of equivariant towers which is of independent interest.
description: v.4. Version accepted for publication in AGT
Scrambling under quench
Creators: name: Aramthottil, Adith Sai
name: Das, Diptarka
name: Das, Suchetan
name: Dey, Bidyut
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We evaluate out of time ordered correlators in certain low dimensional quantum systems at zero temperature, subjected to homogenous quantum quenches. We find that when the Lyapunov exponent exists, it can be identified with the quenched energy. We show that the exponent naturally gets related to the post-quench effective temperature. In the context of sudden quenches the exponent is determined in terms of the quench amplitude while for smooth quenches we observe scalings (both the Kibble-Zurek as well as the fast) of the exponent with the quench rate. The scalings are identical to that of the energy generated during the quench.
description: 24 pages, 11 figures; v2 : Matches journal accepted version: new section on a bound on the dynamical Lyapunov index, two new appendices, one containing analysis of density of OTOC during quenches, updated references
title: Das Kinderhaus der Gustav-Werner-Stiftung „zum Bruderhaus", Reutlingen, Gustav-Werner-Straße 7
Creators: name: Schneider, Ursula
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 16, Nr. 4 (1987), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Synthesis reveals that island species–area relationships emerge from processes beyond passive sampling
Creators: name: Gooriah, Leana
name: Blowes, Shane A.
name: Sagouis, Alban
name: Schrader, Julian
name: Karger, Dirk N.
name: Kreft, Holger
name: Chase, Jonathan M.
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2021
Subjects: subject: 577

description: Aim: The island species–area relationship (ISAR) quantifies how the number of species increases as the area of an island or island-like habitat gets larger and is one of the most general patterns in ecology. However, studies that measure the ISAR often confound variation in sampling methodology and analyses, precluding appropriate syntheses of its underlying mechanisms. Most ISAR studies use only presence–absence data at the whole-island scale, whereas we planned to use a framework that applies individual-based rarefaction to synthesize whether and how the ISAR differs from the null expectation of the passive sampling hypothesis. Location: Five hundred and five islands from 34 different archipelagos across the world, including oceanic islands, lake islands and forest islands. Major taxa studied: Local assemblages of plants, invertebrates, herpetofauna, birds and mammals. Methods: We collated local-scale species abundance data from multiple archipelagos (median of 12 islands per study) and used a rarefaction-based approach to synthesize the relationship between island size and (1) sample effort-controlled rarefied species richness, or (2) an effective number of species derived from the probability of interspecific encounter (an index of community evenness). Results: When we applied rarefaction to control for sampling effort, the numbers of species and their relative abundances across all studies differed from the passive sampling hypothesis. Our measure of evenness also increased with island size, suggesting that the disproportionate effects we observed influenced both rarer and more common species. We found few associations between the slope of this effect and island type or taxon, but we did find that island archipelagos with greater elevational heterogeneity also deviated more from the null expectation than those with less heterogeneity. Main conclusions: Using a synthetic approach across island archipelagos, we reject the null expectation that passive sampling causes the ISAR and instead suggest that ecological mechanisms leading to disproportionate (non-random) effects on larger relative to smaller islands are predominant.
Strings on AdS Wormholes and Nonsingular Black Holes
Creators: name: Lu, H.
name: Vazquez-Poritz, Justin F.
name: Zhang, Zhibai
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Certain AdS black holes in the STU model can be conformally scaled to wormhole and black hole solutions of an f(R) type theory which have two asymptotically AdS regions and are completely free of curvature singularities. While there is a delta-function source for the dilaton, classical string probes are not sensitive to this singularity. If the AdS/CFT correspondence can be applied in this context, then the wormhole background describes a phase in which two copies of a conformal field theory interact with each other, whereas the nonsingular black hole describes entangled states. By studying the behavior of open strings on these backgrounds, we extract a number of features of the quarks and anti-quarks that live in the field theories. In the interacting phase, we find that there is a maximum speed with which the quarks can move without losing energy, beyond which energy is transferred from a quark in one field theory to a quark in the other. We also compute the rate at which moving quarks within entangled states lose energy to the two surrounding plasmas. While a quark-antiquark pair within a single field theory exhibits Coulomb interaction for small separation, a quark in one field theory exhibits spring-like confinement with an anti-quark in the other field theory. For the entangled states, we study how the quark-antiquark screening length depends on temperature and chemical potential. In the interacting phase of the two field theories, a quadruplet made up of one quark-antiquark pair in each field theory can undergo transitions involving how the quarks and antiquarks are paired in terms of the screening.
description: 32 pages, 10 figures, section added
Function recovery on manifolds using scattered data
Creators: name: Krieg, David
name: Sonnleitner, Mathias
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 41A55, 65D05 (Primary) 41A25, 41A63, 58C35, 65D15 (Secondary)

description: We consider the task of recovering a Sobolev function on a connected compact Riemannian manifold $M$ when given a sample on a finite point set. We prove that the quality of the sample is given by the $L_γ(M)$-average of the geodesic distance to the point set and determine the value of $γ\in (0,\infty]$. This extends our findings on bounded convex domains [IMA J. Numer. Anal., 44:1346--1371, 2024]. As a byproduct, we prove the optimal rate of convergence of the $n$-th minimal worst case error for $L_q(M)$-approximation for all $1\le q \le \infty$.
 Further, a limit theorem for moments of the average distance to a set consisting of i.i.d.\ uniform points is proven. This yields that a random sample is asymptotically as good as an optimal sample in precisely those cases with $γ<\infty$. In particular, we obtain that cubature formulas with random nodes are asymptotically as good as optimal cubature formulas if the weights are chosen correctly. This closes a logarithmic gap left open by Ehler, Gräf and Oates [Stat. Comput., 29:1203-1214, 2019].
description: 23 pages
title: Die Michaelskirche in Stuttgart-Sillenbuch von Hans Herkommer. Der katholische Kirchenbau der frühen 50er Jahre in Württemberg
Creators: name: Fekete, Julius
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 16, Nr. 4 (1987), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Random sections of $\ell_p$-ellipsoids, optimal recovery and Gelfand numbers of diagonal operators
Creators: name: Hinrichs, Aicke
name: Prochno, Joscha
name: Sonnleitner, Mathias
Publisher: name: arXiv
Year: 2021
Subjects: subject: Functional Analysis (math.FA)
subject: Numerical Analysis (math.NA)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: Primary 52A23, 65Y20, Secondary 60G15

description: We study the circumradius of a random section of an $\ell_p$-ellipsoid, $0
description: 24 pages, 1 figure
Supplementary Figures S1 and S2 from Deterrence of birds with an artificial predator, the RobotFalcon
Creators: name: Storms, Rolf F.
name: Carere, Claudio
name: Musters, Robert
name: van Gasteren, Hans
name: Verhulst, Simon
name: Hemelrijk, Charlotte K.
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: Environmental Science
subject: 90301 Biomaterials
subject: FOS: Medical engineering
subject: 30402 Biomolecular Modelling and Design
subject: FOS: Chemical sciences

description: Figure s1. The drone (left) and an example of its view during flight (right). Figure s2. Comparison between deterrence of flocks per species with RobotFalcon, drone and control (=no disturbance).
title: Personalia
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 16, Nr. 4 (1987), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: Deutscher Glockenatlas, hrsg. v. B. Bischoff und T. Breuer, Bd. 4, Baden. Bearbeitet von Sigrid Thurm unter Mitwirkung von Frank T. Leusch. Deutscher Kunstverlag, München 1985.
Creators: name: Huth, Hans
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 16, Nr. 4 (1987), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: Neuerscheinung
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 16, Nr. 4 (1987), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: Viel Arbeit bis zum Vergnügen - Zur Nachbildung eines mittelalterlichen Trictrac-Spieles
Creators: name: Röber, Ralph
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 23, Nr. 1 (1994), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Bivariate Generating Functions for a Class of Linear Recurrences: General Structure
Creators: name: G., J. Fernando Barbero
name: Salas, Jesús
name: Villaseñor, Eduardo J. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We consider Problem 6.94 posed in the book Concrete Mathematics by Graham, Knuth, and Patashnik, and solve it by using bivariate exponential generating functions. The family of recurrence relations considered in the problem contains many cases of combinatorial interest for particular choices of the six parameters that define it. We give a complete classification of the partial differential equations satisfied by the exponential generating functions, and solve them in all cases. We also show that the recurrence relations defining the combinatorial numbers appearing in this problem display an interesting degeneracy that we study in detail. Finally, we obtain for all cases the corresponding univariate row generating polynomials.
description: 21 pages (LaTeX2e). Major changes with respect to version 1. Section 1 (resp. 2) is an abridged version of sections 1, 2, and 3 (resp. 4) of arXiv:1307.2010v1; section 3 contains new material, section 4 is an abridged version of section 3 of arXiv:1307.5624v1, and the appendix contains a summary of section 5 of arXiv:1307.2010v1
What is the best RNN-cell structure to forecast each time series behavior?
Creators: name: Khaldi, Rohaifa
name: Afia, Abdellatif El
name: Chiheb, Raddouane
name: Tabik, Siham
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: It is unquestionable that time series forecasting is of paramount importance in many fields. The most used machine learning models to address time series forecasting tasks are Recurrent Neural Networks (RNNs). Typically, those models are built using one of the three most popular cells: ELMAN, Long Short-Term Memory (LSTM), or Gated Recurrent Unit (GRU) cells. Each cell has a different structure and implies a different computational cost. However, it is not clear why and when to use each RNN-cell structure. Actually, there is no comprehensive characterization of all the possible time series behaviors and no guidance on what RNN cell structure is the most suitable for each behavior. The objective of this study is twofold: it presents a comprehensive taxonomy of almost all time series behaviors and provides insights into the best RNN cell structure for each time series behavior. We conducted two experiments: (1) We evaluate and analyze the role of each component in the LSTM-Vanilla cell by creating 11 variants based on one alteration in its basic architecture (removing, adding, or substituting one cell component). (2) We evaluate and analyze the performance of 20 possible RNN-cell structures. To evaluate, compare, and select the best model, different statistical metrics were used: error-based metrics, information criterion-based metrics, naive-based metrics, and direction change-based metrics. To further improve our confidence in the models interpretation and selection, the Friedman Wilcoxon-Holm signed-rank test was used. Our results advocate the usage and exploration of the newly created RNN variant, named SLIM, in time series forecasting thanks to its high ability to accurately predict the different time series behaviors, as well as its simple structural design that does not require expensive temporal and computing resources.
description: 58 pages, 26 figures
Prediction of charmoniumlike structures in the hidden-charm di-eta decays of higher charmonia
Creators: name: Chen, Dian-Yong
name: Liu, Xiang
name: Matsuki, Takayuki
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Considering the situation that a single chiral partilce, $η$, is initially emitted, we study the hidden-charm di-eta decays of charmoniumlike state $Y(4660)$ and the predicted charmonium $ψ(4790)$, i.e., $Y(4660)/ψ(4790) \to J/ψηη$ through the inetermediates, $η\left[D^{(*)}\bar{D}^{(*)}\right]$ and/or $η \left[D_s^{+(*)}{D}_s^{-(*)}\right]$, and answer to the important question whether there exist isoscalar charmoniumlike structures in the $D^{(*)}\bar{D}^{(*)}$ and/or $D_s^{+(*)}{D}_s^{-(*)}$ channels. Our results predict that there will be enhancement structures near $D\bar{D}^*$, $D^*\bar{D}^*$ and $D_s\bar{D}_s^*$ thresholds for $Y(4660)$ and near $D^*\bar{D}^*$, $D_s\bar{D}_s^*$ and $D_s^*\bar{D}_s^*$ thresholds for $ψ(4790)$ in the $M_{\mathrm{max}}({J/ψη})$ distributions of $Y(4660)/ψ(4790) \to ηηJ/ψ$, respectively. These peaks are accessible at future experiments, especially BESIII, Belle, BaBar and forthcoming BelleII.
description: 6 pages, 1 table and 5 figures. More discussions added. Accepted by Journal of Physics G: Nuclear and Particle Physics
Reduction of Markov chains with two-time-scale state transitions
Creators: name: Jia, Chen
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60J27, 60J28, 93C70

description: In this paper, we consider a general class of two-time-scale Markov chains whose transition rate matrix depends on a parameter $λ>0$. We assume that some transition rates of the Markov chain will tend to infinity as $λ\rightarrow\infty$. We divide the state space of the Markov chain $X$ into a fast state space and a slow state space and define a reduced chain $Y$ on the slow state space. Our main result is that the distribution of the original chain $X$ will converge in total variation distance to that of the reduced chain $Y$ uniformly in time $t$ as $λ\rightarrow\infty$.
description: 30 pages, 3 figures; Stochastics: An International Journal of Probability and Stochastic Processes, 2015
Dynamical torsion as the microscopic origin of the neutrino seesaw
Creators: name: Zubkov, M. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is assumed, that there are two scales in quantum gravity. Metric fluctuates at the scales of the order of the Plank mass. The second scale $M_T$ is related to the fluctuations of torsion. We suppose, that it may be as low as $M_T \sim 1$ TeV. Due to the non - minimal coupling to torsion the attractive interaction between the fermions appears. The non - minimal coupling admits the appearance of different coupling constants for different fermions. This opens the possibility that the interaction with torsion gives the Majorana masses for the right - handed neutrinos (that are assumed to be of the order of $M_T$). We suppose, that the Dirac masses for the neutrino are all close to the mass of electron. This gives the light neutrino masses $\le 0.25$ eV. In addition, the model predicts the appearance of Majorons that may contribute to the dark matter as well as to the invisible decay of the $125$ GeV Higgs boson.
description: Accepted for publication in Mod.Phys.Lett.A
Non-simple principally polarised abelian varieties
Creators: name: Borówka, Paweł
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: The paper investigates the locus of non-simple principally polarised abelian $g$-folds. We show that the irreducible components of this locus are $\Is^g_{D}$, defined as the locus of principally polarised $g$-folds having an abelian subvariety with induced polarisation of type $D=(d_1,\ldots,d_k)$, where $k\leq\frac{g}{2}$. The main theorem produces Humbert-like equations for irreducible components of $\Is^g_{D}$ for any $g$ and $D$. Moreover, there are theorems which characterise the Jacobians of curves that are étale double covers or double covers branched in two or four points.