cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Process design for 5-axis ball end milling using a real-time capable dynamic material removal simulation
Creators: name: Denkena, Berend
name: Pape, O.
name: Krödel, A.
name: Böß, V.
name: Ellersiek, L.
name: Mücke, A.
Publisher: name: Heidelberg : Springer
Year: 2021
Subjects: subject: Dexel
subject: Milling
subject: Process stability
subject: Simulation
subject: 3D printers
subject: Ball milling
subject: Milling (machining)
subject: Nickel alloys
subject: Process design
subject: Titanium alloys
subject: Topography
subject: Turbomachine blades
subject: Additive manufacturing process
subject: Dynamic materials
subject: Flexible materials
subject: Hard to cut material
subject: Running-in process
subject: Shape deviations
subject: Unstable process
subject: Design
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: For repairing turbine blades or die and mold forms, additive manufacturing processes are commonly used to build-up new material to damaged sections. Afterwards, a subsequent re-contouring process such as 5-axis ball end milling is required to remove the excess material restoring the often complex original geometries. The process design of the re-contouring operation has to be done virtually, because the individuality of the repair cases prevents actual running-in processes. Hard-to-cut materials e.g. titanium or nickel alloys, parts prone to vibration and long tool holders complicate the repair even further. Thus, a fast and flexible material removal simulation is needed. The simulation has to predict suitable processes focusing shape deviations under consideration of process stability for arbitrary complex engagement conditions. In this paper, a dynamic multi-dexel based material removal simulation is presented, which is able to predict high-resolution surface topography and stable parameters for arbitrary processes such as 5-axis ball end milling. In contrast to other works, the simulation is able to simulate an unstable process using discrete cutting edges in real-time. © 2020, The Author(s).
title: La banalizzazione del fascismo nell’Italia del dopoguerra
Creators: name: Dematteis, Bianca Maria
Publisher: name: Politika.io
Year: 2019

description: L’articolo ha l’obiettivo di individuare le modalità attraverso le quali sin dal dopoguerra è circolata una narrazione banalizzante e a tratti apologetica del fascismo. L’analisi è stata condotta su tre periodici: «L’Uomo qualunque» diretto da Guglielmo Giannini, «Candido» di Giovannino Guareschi e Giovanni Mosca (dal 1950 sarà direttore unico Guareschi) e «Il Borghese» di Leo Longanesi, pubblicati rispettivamente dal 27 dicembre 1944, dal 15 dicembre 1945 e dal 15 marzo 1950. Le riviste sono state analizzate dal numero di fondazione fino a quelli apparsi nel 1956. I tre giornali appartengono, nonostante alcune differenze, al medesimo milieu culturale: la destra italiana anti-antifascista e anticomunista. L’indagine condotta sugli articoli dei periodici ha consentito di individuare le strategie retoriche impiegate per rappresentare il fascismo, la guerra, la Resistenza e la Shoah. Banalizzazione della violenza, uso strumentale della categoria di vittima, silenzio sui crimini commessi dai fascisti nell’Impero coloniale, l’attacco ad personam per descrivere l’avversario politico, la falsa analogia sono gli strumenti retorici maggiormente impiegati per costruire una narrazione fortemente ideologica e spesso falsificata del passato fascista. Il ricorso a queste strutture narrative ha permesso la creazione di topoi, immagini e formule narrative relative alla storia del fascismo che hanno circolato nell’Italia repubblicana anche al di fuori del settore della stampa esaminato e che non sono assenti dal discorso pubblico e politico italiano attuale.
Mineralogical-geochemical characterisation of cassiterite and wolframite ores for an analytical fingerprint : focus on trace element analysis by LA-ICP-MS
Creators: name: Goldmann, Simon
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2016
Subjects: subject: Cassiterite
subject: wolframite
subject: trace elements
subject: LA-ICP-MS
subject: Kassiterit
subject: Wolframit
subject: Spurenelemente
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: [no abstract]
Direct Detection of the Tertiary Component in the Massive Multiple HD 150 136 with VLTI
Creators: name: Sanchez-Bermudez, J.
name: Schödel, R.
name: Alberdi, A.
name: Barbá, R. H.
name: Hummel, C. A.
name: Apellaníz, J. Maíz
name: Pott, J. -U.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Massive stars are of fundamental importance for almost all aspects of astrophysics, but there still exist large gaps in our understanding of their properties and formation because they are rare and therefore distant. It has been found that most O-stars are multiples. HD 150 136 is the nearest system to Earth with >100 M_sol, and provides a unique opportunity to study an extremely massive system. Recently, evidence for the existence of a third component in HD 150 136, in addition to the tight spectroscopic binary that forms the main component, was found in spectroscopic observations. Our aim was to image and obtain astrometric and photometric measurements of this component using long baseline optical interferometry to further constrain the nature of this component. We observed HD150136 with the near-infrared instrument AMBER attached to the ESO VLT Interferometer. The recovered closure phases are robust to systematic errors and provide unique information on the source asymmetry. Therefore, they are of crucial relevance for both image reconstruction and model fitting of the source structure. The third component in HD 150 136 is clearly detected in the high-quality data from AMBER. It is located at a projected angular distance of 7.3 mas, or about 13 AU at the line-of-sight distance of HD 150 136, at a position angle of 209 degrees East of North, and has a flux ratio of 0.25 with respect to the inner binary. We resolved the third component of HD 150 136 in J, H and K filters. The luminosity and color of the tertiary agrees with the predictions and shows that it is also an O main-sequence star. The small measured angular separation indicates that the tertiary may be approaching the periastron of its orbit. These results, only achievable with long baseline near infrared interferometry, constitute the first step towards the understanding of the massive star formation mechanisms.
Inter-pad dead regions of irradiated FBK Low Gain Avalanche Detectors
Creators: name: Darby, B.
name: Mazza, S. M.
name: McKinney-Martinez, F.
name: Padilla, R.
name: Sadrozinski, H. F. -W.
name: Seiden, A.
name: Schumm, B.
name: Wilder, M.
name: Zhao, Y.
name: Arcidiacono, R.
name: Cartiglia, N.
name: Ferrero, M.
name: Mandurrino, M.
name: Sola, V.
name: Staiano, A.
name: Cindro, V.
name: Kranberger, G.
name: Mandiz, I.
name: Mikuz, M.
name: Zavtranik, M.
name: Boscardin, M.
name: Della Betta, G. F.
name: Ficorella, F.
name: Pancheri, L.
name: Paternoster, G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Low Gain Avalanche Detectors (LGADs) are a type of thin silicon detector with a highly doped gain layer. LGADs manufactured by Fondazione Bruno Kessler (FBK) were tested before and after irradiation with neutrons. In this study, the Inter-pad distances (IPDs), defined as the width of the distances between pads, were measured with a TCT laser system. The response of the laser was tuned using $β$-particles from a 90Sr source. These insensitive "dead zones" are created by a protection structure to avoid breakdown, the Junction Termination Extension (JTE), which separates the pads. The effect of neutron radiation damage at \fluence{1.5}{15}, and \fluence{2.5}{15} on IPDs was studied. These distances are compared to the nominal distances given from the vendor, it was found that the higher fluence corresponds to a better matching of the nominal IPD.
The robustness of equilibria on convex solids
Creators: name: Domokos, G.
name: Lángi, Z.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Metric Geometry (math.MG)
subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53A05, 53Z05

description: We examine the minimal magnitude of perturbations necessary to change the number $N$ of static equilibrium points of a convex solid $K$. We call the normalized volume of the minimally necessary truncation robustness and we seek shapes with maximal robustness for fixed values of $N$. While the upward robustness (referring to the increase of $N$) of smooth, homogeneous convex solids is known to be zero, little is known about their downward robustness. The difficulty of the latter problem is related to the coupling (via integrals) between the geometry of the hull $\bd K$ and the location of the center of gravity $G$. Here we first investigate two simpler, decoupled problems by examining truncations of $\bd K$ with $G$ fixed, and displacements of $G$ with $\bd K$ fixed, leading to the concept of external \rm and internal \rm robustness, respectively. In dimension 2, we find that for any fixed number $N=2S$, the convex solids with both maximal external and maximal internal robustness are regular $S$-gons. Based on this result we conjecture that regular polygons have maximal downward robustness also in the original, coupled problem. We also show that in the decoupled problems, 3-dimensional regular polyhedra have maximal internal robustness, however, only under additional constraints. Finally, we prove results for the full problem in case of 3 dimensional solids. These results appear to explain why monostatic pebbles (with either one stable, or one unstable point of equilibrium) are found so rarely in Nature.
description: 20 pages, 6 figures
Local Central Limit Theorem for Long-Range Two-Body Potentials at Sufficiently High Temperatures
Creators: name: Endo, Eric O.
name: Margarint, Vlad
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 60F05, 82B20, 82B05

description: Dobrushin and Tirozzi [14] showed that, for a Gibbs measure with the finite-range potential, the Local Central Limit Theorem is implied by the Integral Central Limit Theorem. Campanino, Capocaccia, and Tirozzi [7] extended this result for a family of Gibbs measures for long-range pair potentials satisfying certain conditions. We are able to show for a family of Gibbs measures for long-range pair potentials not satisfying the conditions given in [7], that at sufficiently high temperatures, if the Integral Central Limit Theorem holds for a given sequence of Gibbs measures, then the Local Central Limit Theorem also holds for the same sequence. We also extend [7] when the state space is general, provided that it is equipped with a finite measure.
description: 24 pages
M dwarf catalog of LAMOST pilot survey
Creators: name: Yi, Z. P.
name: Luo, A. L.
name: Song, Y. H.
name: Zhao, J. K.
name: Shi, Z. X.
name: Wei, P.
name: Ren, J. J.
name: Wang, F. F.
name: Kong, X.
name: Li, Y. B.
name: Du, P.
name: Hou, W.
name: Guo, Y. X.
name: Zhang, S.
name: Zhao, Y. H.
name: Sun, S. W.
name: Pan, J. C.
name: Zhang, L. Y.
name: Wes, A. A.
name: Yuan, H. B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a spectroscopic catalog of 67082 M dwarfs from the LAMOST pilot survey. For each spectrum of the catalog, spectral subtype, radial velocity, equivalent width of H$α$, a number of prominent molecular band indices and the metal sensitive parameter $ζ$ are provided . Spectral subtype have been estimated by a remedied Hammer program (Original Hammer: Covey et al. 2007), in which indices are reselected to obtain more accurate auto-classified spectral subtypes. All spectra in this catalog have been visually inspected to confirm the spectral subtypes. Radial velocities have been well measured by our developed program which uses cross-correlation method and estimates uncertainty of radial velocity as well. We also examine the magnetic activity properties of M dwarfs traced by H$α$ emission line. The molecular band indices included in this catalog are temperature or metallicity sensitive and can be used for future analysis of the physical properties of M dwarfs. The catalog is available on the website \url{http://sciwiki.lamost.org/MCatalogPilot/}.
description: 29 pages, 9 figures,submitted to AJ
Saxifraga controversa Buser
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: A. controversa Buser l: Valde Morgins (Buser).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Classification of Hybrid Quantum-Classical Computing
Creators: name: Phillipson, Frank
name: Neumann, Niels
name: Wezeman, Robert
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: As quantum computers mature, the applicability in practice becomes more important. Many uses of quantum computers will be hybrid, with classical computers still playing an important role in operating and using the quantum computer. The term hybrid is however diffuse and multi-interpretable. In this work we define two classes of hybrid quantum-classical computing: vertical and horizontal. The first is application-agnostic and concerns using quantum computers. The second is application-specific and concerns running an algorithm. For both, we give a further subdivision in different types of hybrid quantum-classical computing and we coin terms for them.
Non-Parametric Data-Driven Background Modelling using Conditional Probabilities
Creators: name: Chisholm, A.
name: Neep, T.
name: Nikolopoulos, K.
name: Owen, R.
name: Reynolds, E.
name: Silva, J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Background modelling is one of the main challenges in particle physics data analysis. Commonly employed strategies include the use of simulated events of the background processes, and the fitting of parametric background models to the observed data. However, reliable simulations are not always available or may be extremely costly to produce. As a result, in many cases, uncertainties associated with the accuracy or sample size of the simulation are the limiting factor in the analysis sensitivity. At the same time, parametric models are limited by the a priori unknown functional form and parameter values of the background distribution. These issues become ever more pressing when large datasets become available, as it is already the case at the CERN Large Hadron Collider, and when studying exclusive signatures involving hadronic backgrounds. Two novel and widely applicable non-parametric data-driven background modelling techniques are presented, which address these issues for a broad class of searches and measurements. The first, relying on ancestral sampling, uses data from a relaxed event selection to estimate a graph of conditional probability density functions of the variables used in the analysis, accounting for significant correlations. A background model is then generated by sampling events from this graph, before the full event selection is applied. In the second, a generative adversarial network is trained to estimate the joint probability density function of the variables used in the analysis. The training is performed on a relaxed event selection which excludes the signal region, and the network is conditioned on a blinding variable. Subsequently, the conditional probability density function is interpolated into the signal region to model the background. The application of each method on a benchmark analysis is presented in detail, and the performance is discussed.
description: 33 pages, 18 figures
The Skorokhod Topologies: What They Are and Why We Should Care
Creators: name: Kern, Julian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Probability (math.PR)
subject: General Topology (math.GN)
subject: FOS: Mathematics
subject: 60-01 (Primary), 60B10, 60G07, 54F65

description: This paper presents a gentle and informal introduction to the Skorokhod topologies. Focus is on motivating examples and concepts.
Photo-switchable liquid crystalline brush as an aligning surface for liquid crystals: modelling via mesoscopic computer simulations
Creators: name: Yaremchuk, D.
name: Patsahan, T.
name: Ilnytskyi, J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We consider the mesoscopic model for the liquid crystalline brush that might serve as a photoswitchable aligning surface for preorientation of low molecular weight liquid crystals in a bulk. The brush is built by grafting the polymer chains of a side-chain molecular architecture, with the side chains terminated by a chromophore unit mimicking the azobenzene unit, to a substrate. When irradiated with ultraviolet light, the chromophores photoisomerize into a non-mesogenic cis state and the whole system turns into an ordinary polymer brush with no orientational order and two states: the collapsed and straightened one, depending on the grafting density. When irradiated with visible light, the chromophores photoisomerize into a mesogenic trans state, resulting in formation of a transient network between chains because of a strong attraction between chromophores. Spontaneous self-assembly of the brush in these conditions results in an orientationally isotropic polydomain structure. The desired uniaxial planar ordering of chromophores within a brush can be achieved at certain temperature and grafting density intervals, as the result of a two-stage preparation protocol. An external stimulus orients chromophores uniaxially at the first stage. The system is equilibrated at the second stage at a given temperature and with the external stimulus switched off. The preoriented chromophores either keep or loose their orientations depending on the strength of the memory effect inherent to a transient network of chains that are formed during the first stage, similarly to the case of the liquid crystalline elastomers, where such effects are caused by the covalent crosslinks.
description: 16 pages, 11 figures
The Music of Elliot Carter (#20)
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2020
Subjects: Orchestral music
Concertos (Piano)
String quartets
Sonatas (Piano)

description: Guests: Elliot Carter, Nicholas Nabokov. Works: Piano Sonata; String Quarter No 1; Double Concerto; Piano Concerto.
Ergodicity of some open systems with particle-disk interactions
Creators: name: Yarmola, Tatiana
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We consider steady states for a class of mechanical systems with particle-disk interactions coupled to two, possibly unequal, heat baths. We show that any steady state that satisfies some natural assumptions is ergodic and absolutely continuous with respect to a Lebesgue-type reference measure and conclude that there exists at most one absolutely continuous steady state.
Low Metallicity Galaxies from the Dark Energy Survey
Creators: name: Lin, Yu-Heng
name: Scarlata, Claudia
name: Mehta, Vihang
name: Skillman, Evan
name: Hayes, Matthew
name: McQuinn, Kristen B. W.
name: Fortson, Lucy
name: Chworowsky, Katherine
name: Clarke, Leonardo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a new selection of 358 blue compact dwarf galaxies (BCDs) from 5,000 square degrees in the Dark Energy Survey (DES), and the spectroscopic follow-up of a subsample of 68 objects. For the subsample of 34 objects with deep spectra, we measure the metallicity via the direct T$_e$ method using the auroral [\oiii]$λ$ 4363 emission line. These BCDs have an average oxygen abundance of 12+log(O/H)= 7.8, with stellar masses between 10$^7$ to 10$^8$ M$_\odot$ and specific star formation rates between $\sim$ 10$^{-9}$ to 10$^{-7}$ yr$^{-1}$. We compare the position of our BCDs with the Mass-metallicity (M-Z) and Luminosity-metallicity (L-Z) relation derived from the Local Volume Legacy sample. We find the scatter about the M-Z relation is smaller than the scatter about the L-Z relation. We identify a correlation between the offsets from the M-Z and L-Z relation that we suggest is due to the contribution of metal-poor inflows. Finally, we explore the validity of the mass-metallicity-SFR fundamental plane in the mass range probed by our galaxies. We find that BCDs with stellar masses smaller than $10^{8}$M$_{\odot}$ do not follow the extrapolation of the fundamental plane. This result suggests that mechanisms other than the balance between inflows and outflows may be at play in regulating the position of low mass galaxies in the M-Z-SFR space.
description: 19 pages, 10 figures, accepted by ApJ
Picosecond Timing-Planes for Future Collider Detectors
Creators: name: Gorham, P. W.
name: Campos, C.
name: Hast, C.
name: Jobe, K.
name: Miki, C.
name: Nguyen, L.
name: Olmedo, M.
name: Prechelt, R.
name: Sonoda, C.
name: Varner, G. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report experimental test-beam results on dielectric-loaded waveguide detectors that utilize microwave Cherenkov signals to time and characterize high energy particle showers. These results are used to validate models and produce high-fidelity simulations of timing plane systems which yield picosecond time tags and millimeter spatial coordinates for the shower centroid. These timing planes, based on the Askaryan effect in solid dielectrics, are most effective at the high center-of-momentum energies planned for the Future Circular Collider (FCC-hh), and are of particular interest in the forward region due to their high radiation immunity. We use our beam test results and GEANT4 simulations to validate a hybrid microwave detector model, which is used to simulate a reference timing plane design for the FCC forward calorimeters. Our results indicate that 0.5-3 ps particle timing is possible for a wide range of collision products in the reference FCC hadron collider detector, even with current technology.
description: 34 pages, 35 figures
An Asymptotic Expansion Formula for Up-and-Out Barrier Option Price under Stochastic Volatility Model
Creators: name: Kato, Takashi
name: Takahashi, Akihiko
name: Yamada, Toshihiro
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computational Finance (q-fin.CP)
subject: FOS: Economics and business

description: This paper derives a new semi closed-form approximation formula for pricing an up-and-out barrier option under a certain type of stochastic volatility model including SABR model by applying a rigorous asymptotic expansion method developed by Kato, Takahashi and Yamada (2012). We also demonstrate the validity of our approximation method through numerical examples.
description: 9 pages
title: Walter Matthes, Die nördlichen Elbgermanen in spätrömischer Zeit ; Die Germanen in der Prignitz zur Zeit der Völkerwanderung
Creators: name: Schwantes, Gustav
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Walter Matthes, Die nördlichen Elbgermanen in spätrömischer Zeit. Mannus-Bibliothek Nr. 48, 1931. 113 S., 138 Abb. auf 27 Taf., 9 Karten. Rezension zu: Walter Matthes, Die Germanen in der Prignitz zur Zeit der Völkerwanderung. Mannus- Bibliothek Nr. 49. 138 S., 408 Abb. auf 70 Taf.
Discord and Decoherence
Creators: name: Martin, Jerome
name: Micheli, Amaury
name: Vennin, Vincent
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In quantum information theory, quantum discord has been proposed as a tool to characterise the presence of "quantum correlations" between the subparts of a given system. Whether a system behaves quantum-mechanically or classically is believed to be impacted by the phenomenon of decoherence, which originates from the unavoidable interaction between this system and an environment. Generically, decoherence is associated with a decrease of the state purity, i.e. a transition from a pure to a mixed state. In this paper, we investigate how quantum discord is modified by this quantum-to-classical transition. This study is carried out on systems described by quadratic Hamiltonians and Gaussian states, with generalised squeezing parameters. A generic parametrisation is also introduced to describe the way the system is partitioned into two subsystems. We find that the evolution of quantum discord in presence of an environment is a competition between the growth of the squeezing amplitude and the decrease of the state purity. In phase space, this corresponds to whether the semi-minor axis of the Wigner ellipse increases or decreases, which has a clear geometrical interpretation. Finally, these considerations are applied to primordial cosmological perturbations, thus allowing us to investigate how large-scale structures in our universe, which are believed to arise from quantum fluctuations, can exhibit classical properties.
description: 35 pages without appendices (total 57 pages), 10 figures, typo corrected in the labels of figure 3
Statistical Dynamics of Wealth Inequality in Stochastic Models of Growth
Creators: name: Kemp, Jordan T.
name: Bettencourt, Luis M. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Understanding the statistical dynamics of growth and inequality is a fundamental challenge to ecology and society. Recent analyses of wealth and income dynamics in contemporary societies show that economic inequality is very dynamic and that individuals experience substantially different growth rates over time. However, despite a fast growing body of evidence for the importance of fluctuations, we still lack a general statistical theory for understanding the dynamical effects of heterogeneneous growth across a population. Here we derive the statistical dynamics of correlated growth rates in heterogeneous populations. We show that correlations between growth rate fluctuations at the individual level influence aggregate population growth, while only driving inequality on short time scales. We also find that growth rate fluctuations are a much stronger driver of long-term inequality than earnings volatility. Our findings show that the dynamical effects of statistical fluctuations in growth rates are critical for understanding the emergence of inequality over time and motivate a greater focus on the properties and endogenous origins of growth rates in stochastic environments.
description: 7 pages, 4 figures
title: Hermann Schroller, Die Stein- und Kupferzeit Siebenbürgens
Creators: name: Reinecke, Paul
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Hermann Schroller, Die Stein- und Kupferzeit Siebenbürgens. (Vorgeschichtliche Forschungen Heft 8.) Berlin 1933, Walter de Gruyter & Co. VIII und 79 S., 55 Taf.
Unsupervised Deep Learning-based clustering for Human Activity Recognition
Creators: name: Amrani, Hamza
name: Micucci, Daniela
name: Napoletano, Paolo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: One of the main problems in applying deep learning techniques to recognize activities of daily living (ADLs) based on inertial sensors is the lack of appropriately large labelled datasets to train deep learning-based models. A large amount of data would be available due to the wide spread of mobile devices equipped with inertial sensors that can collect data to recognize human activities. Unfortunately, this data is not labelled. The paper proposes DISC (Deep Inertial Sensory Clustering), a DL-based clustering architecture that automatically labels multi-dimensional inertial signals. In particular, the architecture combines a recurrent AutoEncoder and a clustering criterion to predict unlabelled human activities-related signals. The proposed architecture is evaluated on three publicly available HAR datasets and compared with four well-known end-to-end deep clustering approaches. The experiments demonstrate the effectiveness of DISC on both clustering accuracy and normalized mutual information metrics.
description: 2022 IEEE 12th International Conference on Consumer Electronics (ICCE-Berlin)
The anisotropic grain size effect on the mechanical response of polycrystals: The role of columnar grain morphology in additively manufactured metals
Creators: name: Motaman, S. Amir H.
name: Kibaroglu, Dilay
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Additively manufactured (AM) metals exhibit highly complex microstructures, particularly with respect to grain morphology which typically features heterogeneous grain size distribution, anomalous and anisotropic grain shapes, and the so-called columnar grains. In general, the conventional morphological descriptors are not suitable to represent complex and anisotropic grain morphology of AM microstructures. The principal aspect of microstructural grain morphology is the state of grain boundary spacing or grain size whose effect on the mechanical response is known to be crucial. In this paper, we formally introduce the notions of axial grain size and grain size anisotropy as robust morphological descriptors which can concisely represent highly complex grain morphologies. We instantiated a discrete sample of polycrystalline aggregate as a representative volume element (RVE) which has random crystallographic orientation and misorientation distributions. However, the instantiated RVE incorporates the typical morphological features of AM microstructures including distinctive grain size heterogeneity and anisotropic grain size owing to its pronounced columnar grain morphology. We ensured that any anisotropy arising in the macroscopic mechanical response of the instantiated sample is mainly associated with its underlying anisotropic grain size. The RVE was then used for meso-scale full-field crystal plasticity simulations corresponding to uniaxial tensile deformation along different axes via a spectral solver and a physics-based crystal plasticity constitutive model. Through the numerical analyses, we were able to isolate the contribution of anisotropic grain size to the anisotropy in the mechanical response of polycrystalline aggregates, particularly those with the characteristic complex grain morphology of AM metals. Such a contribution can be described by an inverse square relation.
title: Werner Jorns (Hrsg.), Neue Bodenurkunden aus Starkenburg
Creators: name: Behrens, Gustav
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Neue Bodenurkunden aus Starkenburg hrsg. von Werner Jorns (Veröffentlichungen des Amtes für Bodendenkmalpflege im Regierungsbezirk Darmstadt, Heft 2) Kassel, Bärenreiter-Verlag 1953, 180 Seiten mit 36 Abb., 11 Tafeln, 2 Karten.
New analyses of event shape observables in electron-positron annihilation and the determination of $α_s$ running behavior in perturbative domain
Creators: name: Wang, Sheng-Quan
name: Luo, Chao-Qin
name: Wu, Xing-Gang
name: Shen, Jian-Ming
name: Di Giustino, Leonardo
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In this paper, we give comprehensive analyses for event shape observables in electron-positron annihilation by using the Principle of Maximum Conformality (PMC) which is a rigorous scale-setting method to eliminate the renormalization scheme and scale ambiguities in perturbative QCD predictions. Conventionally the renormalization scale and theoretical uncertainties in event shape observables are often evaluated by setting the scale to the center-of-mass energy $\sqrt{s}$. The event shape distributions using this conventional scale setting are plagued by the large renormalization scale uncertainty and underestimate the experimental data. Moreover, since the renormalization scale is simply fixed to the center-of-mass energy $\sqrt{s}$, only one value of the coupling $α_s$ at the single scale $\sqrt{s}$ can be extracted. In contrast, the PMC renormalization scales are determined by absorbing the nonconformal $β$ contributions that govern the behavior of the running coupling via the Renormalization Group Equation (RGE). The resulting PMC scales change with event shape kinematics, reflecting the virtuality of the underlying quark and gluon subprocess. The PMC scales thus yield the correct physical behavior of the scale and the PMC predictions agree with precise event shape distributions measured at the LEP experiment. More importantly, we can precisely determine the running of the QCD coupling constant $α_s(Q^2)$ over a wide range of $Q^2$ in perturbative domain from event shape distributions measured at a single center-of-mass energy $\sqrt{s}$.
description: 28 pages, 18 figures, published version
Intrinsic Bistability In Quantum Point Contacts with in-plane Side Gates
Creators: name: Charles, J.
name: Cahay, M.
name: Newrock, R. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the onset of intrinsic bistability and accompanying hysteresis in a single quantum point contact (QPC) with in-plane side gates in the presence of lateral spin-orbit coupling. The hysteresis in the conductance versus common gate voltage applied to the two side gates exists only if the narrow portion of the QPC is long enough. The hysteresis is absent if the effects of electron-electron interaction are neglected but increases with the strength of the electron-electron interaction. The hysteresis appears in the region of conductance anomalies, i.e., less than 2e2/h, and is due to multistable spin textures in these regions.
description: Applied Physics Letters (2013)
On the Classification of Lie Bialgebras by Cohomological Means
Creators: name: Alsaody, Seidon
name: Pianzola, Arturo
Publisher: name: Deutsche Mathematiker-Vereinigung
Year: 2019

description: We approach the classification of Lie bialgebra structures on simple Lie algebras from the viewpoint of descent and non-abelian cohomology. We achieve a description of the problem in terms of faithfully flat cohomology over an arbitrary ring over $\mathbb{Q}$, and solve it for Drinfeld--Jimbo Lie bialgebras over fields of characteristic zero. We consider the classification up to isomorphism, as opposed to equivalence, and treat split and non-split Lie algebras alike. We moreover give a new interpretation of scalar multiples of Lie bialgebras hitherto studied using twisted Belavin-Drinfeld cohomology.
description: DOCUMENTA MATHEMATICA, Vol 24 (2019), p. 2583-2612, 1431-0643
Elliptic K3 Surfaces at Infinite Complex Structure and their Refined Kulikov models
Creators: name: Lee, Seung-Joo
name: Weigand, Timo
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Motivated by the Swampland Distance and the Emergent String Conjecture of Quantum Gravity, we analyse the infinite distance degenerations in the complex structure moduli space of elliptic K3 surfaces. All complex degenerations of K3 surfaces are known to be classified according to their associated Kulikov models of Type I (finite distance), Type II or Type III (infinite distance). For elliptic K3 surfaces, we characterise the underlying Weierstrass models in detail. Similarly to the known two classes of Type II Kulikov models for elliptic K3 surfaces we find that the Weierstrass models of the more elusive Type III Kulikov models can be brought into two canonical forms. We furthermore show that all infinite distance limits are related to degenerations of Weierstrass models with non-minimal singularities in codimension one or to models with degenerating generic fibers as in the Sen limit. We explicitly work out the general structure of blowups and base changes required to remove the non-minimal singularities. These results form the basis for a classification of the infinite distance limits of elliptic K3 surfaces as probed by F-theory in a companion paper. The Type III limits, in particular, are (partial) decompactification limits as signalled by an emergent affine enhancement of the symmetry algebra.
description: 71 pages, 6 Figures
The metaplectic action on modulation spaces
Creators: name: Führ, Hartmut
name: Shafkulovska, Irina
Publisher: name: arXiv
Year: 2022
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 42B35, 46F12

description: We study the mapping properties of metaplectic operators $\widehat{S}\in \mathrm{Mp}(2d,\mathbb{R})$ on modulation spaces of the type $\mathrm{M}^{p,q}_m(\mathbb{R}^d)$. Our main result is a full characterisation of the pairs $(\widehat{S},\mathrm{M}^{p,q}(\mathbb{R}^d))$ for which the operator $\widehat{S}:\mathrm{M}^{p,q}(\mathbb{R}^d) \to \mathrm{M}^{p,q}(\mathbb{R}^d)$ is (i) well-defined, (ii) bounded. It turns out that these two properties are equivalent, and they entail that $\widehat{S}$ is a Banach space automorphism. For polynomially bounded weight functions, we provide a simple sufficient criterion to determine whether the well-definedness (boundedness) of ${\widehat{S}:\mathrm{M}^{p,q}{}(\mathbb{R}^d)\to \mathrm{M}^{p,q}(\mathbb{R}^d)}$ transfers to $\widehat{S}:\mathrm{M}^{p,q}_m(\mathbb{R}^d)\to \mathrm{M}^{p,q}_m(\mathbb{R}^d)$.
description: 24 pages, 2 figures. To appear in Appl. Comput. Harmon. Anal
Prediction of turbulence control for arbitrary periodic spanwise wall movement
Creators: name: Cimarelli, Andrea
name: Frohnapfel, Bettina
name: Hasegawa, Yosuke
name: De Angelis, Elisabetta
name: Quadrio, Maurizio
Publisher: name: arXiv
Year: 2013
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In order to generalize the well-known spanwise-oscillating-wall technique for drag reduction, non-sinusoidal oscillations of a solid wall are considered as a means to alter the skin-friction drag in a turbulent channel flow. A series of Direct Numerical Simulations is conducted to evaluate the control performance of nine different temporal waveforms, in addition to the usual sinusoid, systematically changing the wave amplitude and the period for each waveform. The turbulent average spanwise motion is found to coincide with the laminar Stokes solution that is constructed, for the generic waveform, through harmonic superposition. This allows us to define and compute, for each waveform, a new penetration depth of the Stokes layer which correlates with the amount of turbulent drag reduction, and eventually to predict both turbulent drag reduction and net energy saving rate for arbitrary waveforms. Among the waveforms considered, the maximum net energy saving rate is obtained by the sinusoidal wave at its optimal amplitude and period. However, the sinusoid is not the best waveform at every point in the parameter space. Our predictive tool offers simple guidelines to design waveforms that outperform the sinusoid for given (suboptimal) amplitude and period of oscillation. This is potentially interesting in view of applications, where physical limitations often preclude the actuator to reach its optimal operating conditions.
Brief Report on the Extended Linear Sigma Model
Creators: name: Habersetzer, Anja
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a chiral effective model which exhibits all the known symmetry features of the QCD Lagrangian. The extended Linear Sigma Model (eLSM) includes (pseudo-)scalar and (axial-) vector mesons, glueballs, and baryons. It has proven to be a useful tool to understand the nature of the low-energy resonances. It can be used to describe the masses and decay widths of the known low-energy mesons and to disentangle the complicated picture of resonances in the low-energy range. We can answer some of the open questions in the low-energy region, e.g. the resonance (f_0(1500)) is a predominantly glueball state and the resonance (f_0(1370)) is most likely the chiral partner of the pion. We could also find that the resonance (N(1650)) is favoured as the chiral partner of the nucleon (N(939)). In addition the temperature dependence of the chiral condensate and the glueball condensate can be used to study the phase diagram at nonzero temperatures and densities. At nonzero density we achieve nuclear matter saturation.
description: 3 pages, 1 figure
The Geometry of Decoupling Fields
Creators: name: Bah, Ibrahima
name: Bonetti, Federico
name: Leung, Enoch
name: Weck, Peter
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider 4d field theories obtained by reducing the 6d (1,0) SCFT of $N$ M5-branes probing a $\mathbb C^2/\mathbb Z_k$ singularity on a Riemann surface with fluxes. We follow two different routes. On the one hand, we consider the integration of the anomaly polynomial of the parent 6d SCFT on the Riemann surface. On the other hand, we perform an anomaly inflow analysis directly from eleven dimensions, from a setup with M5-branes probing a resolved $\mathbb C^2/\mathbb Z_k$ singularity fibered over the Riemann surface. By comparing the 4d anomaly polynomials, we provide a characterization of a class of modes that decouple along the RG flow from six to four dimensions, for generic $N$, $k$, and genus. These modes are identified with the flip fields encountered in the Lagrangian descriptions of these 4d models, when they are available. We show that such fields couple to operators originating from M2-branes wrapping the resolution cycles. This provides a geometric origin of flip fields. They interpolate between the 6d theory in the UV, where the M2-brane operators are projected out, and the 4d theory in the IR, where these M2-brane operators are part of the spectrum.
description: 33 pages plus appendices
Zannichellia tenuis Buser Cat.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: A. tenuis Buser Cat. 133 und 425. 3: Valsorey (Paiche).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
A Dynamic-Epistemic Logic for Mobile Structured Agents
Creators: name: Yermakova, Anya
name: Baltag, Alexandru
Publisher: name: arXiv
Year: 2012
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Logic (math.LO)
subject: Molecular Networks (q-bio.MN)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: FOS: Biological sciences

description: Multi-agent systems have been studied in various contexts of both application and theory. We take Dynamic Epistemic Logic (DEL), one of the formalisms designed to reason about such systems, as the foundation of the language we will build. BioAmbient calculus is an extension of π-calculus, developed largely for applications to biomolecular systems. It deals with ambients and their ability to communicate and to execute concurrent processes while moving. In this paper we combine the formalism of Dynamic Epistemic Logic together with the formalism of BioAmbient Calculus in order to reason about knowledge maintained and gained upon process transitions. The motivation lies in developing a language that captures locally available information through assignment of knowledge, with potential application to biological systems as well as social, virtual, and others. We replace the ambients of BioAmbient Calculus with agents, to which we attribute knowledge, and explore the parallels of this treatment. The resulting logic describes the information flow governing mobile structured agents, organized hierarchically, whose architecture (and local information) may change due to actions such as communication, merging (of two agents), entering (of an agent into the inner structure of another agent) and exiting (of an agent from the structure of another). We show how the main axioms of DEL must be altered to accommodate the informational effects of the agents' dynamic architecture.
description: This paper was presented at ECAL'11 and later published in the book Integral Biomathics: Tracing the Road to Reality: Results from the First Year Project Activities of the INtegral BIOmathics Support Action (INBIOSA)
Hollow-core fiber-based speckle displacement sensor
Creators: name: Osório, Jonas H.
name: Cabral, Thiago D.
name: Fujiwara, Eric
name: Franco, Marcos A. R.
name: Amrani, Foued
name: Delahaye, Frédéric
name: Gérôme, Frédéric
name: Benabid, Fetah
name: Cordeiro, Cristiano M. B.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The research enterprise towards achieving high-performance hollow-core photonic crystal fibers has led to impressive advancements in the latest years. Indeed, using this family of fibers becomes nowadays an overarching strategy for building a multitude of optical systems ranging from beam delivery devices to optical sources and sensors. In most applications, an effective single-mode operation is desired and, as such, the fiber microstructure or the light launching setups are typically designed for achieving such a behavior. Alternatively, one can identify the use of large-core multimode hollow-core fibers as a promising avenue for the development of new photonic devices. Thus, in this manuscript, we propose and demonstrate the utilization of a large-core tubular-lattice fiber for accomplishing a speckle-based displacement sensor, which has been built up by inserting and suitably dislocating a single-mode fiber inside the void core of the hollow fiber. The work reported herein encompasses both simulation and experimental studies on the evolution of the multimode intensity distributions within the device as well as the demonstration of a displacement sensor with an estimated resolution of 0.7 μm. We understand that this investigation identifies a new opportunity for the employment of large-core hollow fibers within the sensing framework hence widening the gamut of applications of this family of fibers.