cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Large deviations for extreme eigenvalues of deformed Wigner random matrices
Creators: name: McKenna, Benjamin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 15B52, 60F10

description: We present a large deviation principle at speed N for the largest eigenvalue of some additively deformed Wigner matrices. In particular this includes Gaussian ensembles with full-rank general deformation. For the non-Gaussian ensembles, the deformation should be diagonal, and we assume that the laws of the entries have sharp sub-Gaussian Laplace transforms and satisfy certain concentration properties. For these latter ensembles we establish the large deviation principle in a restricted range $(-\infty, x_c)$, where $x_c$ depends on the deformation only and can be infinite.
description: We thank Alice Guionnet and Ofer Zeitouni for explaining that one assumption in an early version of this paper was superfluous
Capacitive behavior of activated carbons obtained from coffee husk
Creators: name: Ramirez, Nathalia
name: Sardella, Fabiana
name: Deiana, Cristina
name: Schlosser, Anja
name: Müller, Dennis
name: Kißling, Patrick A.
name: Klepzig, Lars F.
name: Bigall, Nadja C.
Publisher: name: Cambridge : Royal Society of Chemistry
Year: 2020
Subjects: subject: Chemical activation
subject: Crystal structure
subject: Electrochemical impedance spectroscopy
subject: Energy storage
subject: Potassium hydroxide
subject: Surface chemistry
subject: Textures
subject: Waste management
subject: Activating agents
subject: Capacitive behavior
subject: Carbonaceous materials
subject: Carbonaceous structure
subject: Chemical compositions
subject: Discharge currents
subject: Galvanostatic charge/discharge
subject: Specific capacitance
subject: Cyclic voltammetry
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Sustainable agroindustry has presented many challenges related to waste management. Most of its residues are lignocellulosic biomass materials with great application potential due to their chemical composition, hence the use of biomass-derived carbon materials in energy storage has received growing interest in recent years. In this work, highly micro-porous carbonaceous materials using the endocarp of the coffee fruit or coffee husk (CH) as precursor are obtained. Specifically, three different activating agents (KOH, K2CO3, and steam) to derive activated carbons (ACs) with good capacitive properties are tested. The properties of ACs such as surface chemistry, texture, crystal graphite size, and order in the carbonaceous structure are assessed and compared. The capacitive behavior inherent to the activation routes is also characterized by means of Cyclic Voltammetry (CV), Galvanostatic Charge/Discharge (GCD) and Electrochemical Impedance Spectroscopy (EIS). The obtained specific capacitance values range from 106 to 138 F g-1 for a discharge current of 0.5 A g-1. These results nominate coffee husk as a good precursor of carbonaceous materials suitable for energy storage. © The Royal Society of Chemistry.
Impacts of human activity and global changes on future morphodynamics within the tien river, vietnamese mekong delta
Creators: name: Jordan, Christian
name: Visscher, Jan
name: Dung, Nguyen Viet
name: Apel, Heiko
name: Schlurmann, Torsten
Publisher: name: Basel : MDPI AG
Year: 2020
Subjects: subject: Climate change
subject: Dam impacts
subject: Mekong
subject: Numerical modelling
subject: River morphology
subject: Sand mining
subject: Sea level rise
subject: Budget control
subject: Deposition
subject: Erosion
subject: Hydroelectric power
subject: Hydroelectric power plants
subject: Rivers
subject: Sea level
subject: Erosion and deposition
subject: Erosional process
subject: Global challenges
subject: Hydro-power development
subject: Morphodynamic modeling
subject: Morphodynamic process
subject: Relative sea level rise
subject: Sand mining activities
subject: climate change
subject: future prospect
subject: human activity
subject: hydrodynamics
subject: morphodynamics
subject: river water
subject: Mekong Delta
subject: Viet Nam
subject: Dewey Decimal Classification::600 | Technik::690 | Hausbau, Bauhandwerk

description: The hydro-and morphodynamic processes within the Vietnamese Mekong Delta are heavily impacted by human activity, which in turn affects the livelihood of millions of people. The main drivers that could impact future developments within the delta are local stressors like hydropower development and sand mining, but also global challenges like climate change and relative sea level rise. Within this study, a hydro-morphodynamic model was developed, which focused on a stretch of the Tien River and was nested into a well-calibrated model of the delta's hydrodynamics. Multiple scenarios were developed in order to assess the projected impacts of the different drivers on the river's morphodynamics. Simulations were carried out for a baseline scenario (2000-2010) and for a set of plausible scenarios for a future period (2050-2060). The results for the baseline scenario indicate that the Tien River is already subject to substantial erosion under present-day conditions. For the future period, hydropower development has the highest impact on the local erosion and deposition budget, thus amplifying erosional processes, followed by an increase in sand mining activity and climate change-related variations in discharge. The results also indicate that relative sea level rise only has a minimal impact on the local morphodynamics of this river stretch, while erosional tendencies are slowed by a complete prohibition of sand mining activity. In the future, an unfavourable combination of drivers could increase the local imbalance between erosion and deposition by up to 89%, while the bed level could be incised by an additional 146%. © 2020 by the authors.
Predicting asteroid material properties from a DART-like kinetic impact
Creators: name: Kumamoto, Kathryn M.
name: Owen, J. Michael
name: Syal, Megan Bruck
name: Pearl, Jason
name: Raskin, Cody
name: Caldwell, Wendy K.
name: Rainey, Emma
name: Stickle, Angela
name: Daly, R. Terik
name: Barnouin, Olivier
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: NASA's Double Asteroid Redirection Test (DART) mission is the first full-scale test of the kinetic impactor method for asteroid deflection, in which a spacecraft intentionally impacts an asteroid to change its trajectory. DART represents an important first step for planetary defense technology demonstration, providing a realistic assessment of the effectiveness of the kinetic impact approach on a near-Earth asteroid. The momentum imparted to the asteroid is transferred from the impacting spacecraft and enhanced by the momentum of material ejected from the impact site. However, the magnitude of the ejecta contribution is dependent on the material properties of the target. These properties, such as strength and shear modulus, are unknown for the DART target asteroid, Dimorphos, as well as most asteroids since such properties are difficult to characterize remotely. This study examines how hydrocode simulations can be used to estimate material properties from information available post-impact, specifically the asteroid size and shape, the velocity and properties of the impacting spacecraft, and the final velocity change imparted to the asteroid. Across >300 three-dimensional simulations varying seven material parameters describing the asteroid, we found many combinations of properties could reproduce a particular asteroid velocity. Additional observations, such as asteroid mass or crater size, are required to further constrain properties like asteroid strength or outcomes like the momentum enhancement provided by impact ejecta. Our results demonstrate the vital importance of having as much knowledge as possible prior to an impact mission, with key material parameters being the asteroid's mass, porosity, strength, and elastic properties.
description: Accepted to the Planetary Science Journal
Absolute $\rm ^3$He polarimetry for a double-chambered cell using transmission of thermal neutrons
Creators: name: Watanabe, A.
name: Sekiguchi, K.
name: Ino, T.
name: Inoue, M.
name: Nakai, S.
name: Otake, Y.
name: Taketani, A.
name: Wakabayashi, Y.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We present an absolute $^3$He polarimetry method based on thermal neutron transmission for a double-chambered cell. This method utilizes the fact that a $^3$He nucleus has a large absorption cross section and a spin dependence for thermal neutrons. The cell had a pumping chamber and a target chamber. Polarized $^3$He gas was produced in the pumping chamber by SEOP and then diffused into the target chamber. The $^3$He polarization in the target chamber was determined by comparing the neutron transmissions with the polarized and unpolarized targets. The measurement was performed at the RIKEN Accelerator-Driven Compact Neutron Source. The $^3$He polarization in the target chamber was determined with a statistical error of 1.8% and systematic uncertainty of 0.6%. This method can be used to obtain high-precision data of spin observables in few-nucleon scattering for the investigation of nuclear forces.
description: 15 pages, 7 figures
Congruences satisfied by eta-quotients
Creators: name: Ryan, Nathan C.
name: Scherr, Zachary
name: Sirolli, Nicolás
name: Treneer, Stephanie
Publisher: name: arXiv
Year: 2019
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F33, 11F37

description: The values of the partition function, and more generally the Fourier coefficients of many modular forms, are known to satisfy certain congruences. Results given by Ahlgren and Ono for the partition function and by Treneer for more general Fourier coefficients state the existence of infinitely many families of congruences. In this article we give an algorithm for computing explicit instances of such congruences for eta-quotients. We illustrate our method with a few examples.
description: Corrected version. A small error in the code (the wrong C type was used for part of the computation) led us to find that certain candidates which were claimed to be uninteresting in the paragraph following Proposition 5.2 in the previous version are actually interesting. We have changed the paragraph accordingly but have left Proposition 5.2 intact
Murine CMP-sialic acid synthetase : structural analysis of the C-terminal domain and biochemical characterisation of nuclear localisation
Creators: name: Oschlies, Melanie
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2008
Subjects: subject: CMP-sialic acid synthetase
subject: sialic acid
subject: phosphatase
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]
Using LSST late-time photometry to constrain Type Ibc supernovae and their progenitors
Creators: name: Dessart, Luc
name: Prieto, Jose L.
name: Hillier, D. John
name: Kuncarayakti, Hanindyo
name: Hueichapan, Emilio D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Over its lifespan, the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) will monitor millions of supernovae (SNe) from explosion to oblivion, yielding an unprecedented ugrizy photometric dataset on their late-time evolution. Here, we show that the photometric evolution of Type Ibc SNe can be used to constrain numerous properties of their ejecta, without the need for expensive spectroscopic observations. Using radiative-transfer simulations for explosions of He-star progenitors of different initial masses, we show that the g-band filter follows primarily the strength of the FeII emission, the r-band [OI]6300-6364A and [NII]6548-6583A, the i-band [CaII]7291,7323A, and the z-band the CaII NIR triplet, and hence provides information on nucleosynthetic yields. Information on weaker lines, which may be used, for example, to constrain clumping, is absent. However, this deficiency may eventually be cured by improving the physical realism of radiative-transfer simulations through a closer connection to physically consistent 3D explosion models, and by the judicial selection of a much smaller set of spectral observations. Degeneracies inherent to the SN radiation will affect the interpretation of photometric measures, but line fluxes from nebular-phase spectra are similarly compromised. Importantly, our ``family'' of Type Ibc SN models follows a distinct trajectory in color-color magnitude diagrams as the ejecta evolve from 100 to 450d, allowing one to disentangle different progenitors or explosions. This photometric procedure provides a promising approach to study statistical samples of SNe Ibc and to confront them to ever improving progenitor and explosion models, to capture the onset of late-time interaction with circumstellar material, or to identify events currently unknown.
description: accepted for publication in A&A Letters
Galaxy evolution in overdense environments at high redshift: passive early-type galaxies in a cluster at redshift 2
Creators: name: Strazzullo, V.
name: Gobat, R.
name: Daddi, E.
name: Onodera, M.
name: Carollo, M.
name: Dickinson, M.
name: Renzini, A.
name: Arimoto, N.
name: Cimatti, A.
name: Finoguenov, A.
name: Chary, R. -R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a study of galaxy populations in the central region of the IRAC-selected, X-ray detected galaxy cluster Cl J1449+0856 at z=2. Based on a sample of spectroscopic and photometric cluster members, we investigate stellar populations and morphological structure of cluster galaxies over an area of ~0.7Mpc^2 around the cluster core. The cluster stands out as a clear overdensity both in redshift space, and in the spatial distribution of galaxies close to the center of the extended X-ray emission. The cluster core region (r<200 kpc) shows a clearly enhanced passive fraction with respect to field levels. However, together with a population of massive passive galaxies mostly with early-type morphologies, it also hosts massive actively star-forming, often highly dust-reddened sources. Close to the cluster center, a multi-component system of passive and star-forming galaxies could be the future BCG still assembling. We observe a clear correlation between passive stellar populations and an early-type morphology, in agreement with field studies at similar redshift. Passive early-type galaxies in this clusters are typically a factor 2-3 smaller than similarly massive early-types at z~0, but also on average larger by a factor ~2 than their field analogs at z~2, lending support to recent claims of an accelerated structural evolution in high-redshift dense environments. These results point towards the early formation of a population of massive galaxies, already evolved both in their structure and stellar populations, coexisting with still-actively forming massive galaxies in the central regions of young clusters 10 billion years ago.
description: 17 pages, 13 figures, ApJ in press
Machine learning-accelerated chemistry modeling of protoplanetary disks
Creators: name: Smirnov-Pinchukov, Grigorii V.
name: Molyarova, Tamara
name: Semenov, Dmitry A.
name: Akimkin, Vitaly V.
name: van Terwisga, Sierk
name: Francheschi, Riccardo
name: Henning, Thomas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Aims. With the large amount of molecular emission data from (sub)millimeter observatories and incoming James Webb Space Telescope infrared spectroscopy, access to fast forward models of the chemical composition of protoplanetary disks is of paramount importance. Methods. We used a thermo-chemical modeling code to generate a diverse population of protoplanetary disk models. We trained a K-nearest neighbors (KNN) regressor to instantly predict the chemistry of other disk models. Results. We show that it is possible to accurately reproduce chemistry using just a small subset of physical conditions, thanks to correlations between the local physical conditions in adopted protoplanetary disk models. We discuss the uncertainties and limitations of this method. Conclusions. The proposed method can be used for Bayesian fitting of the line emission data to retrieve disk properties from observations. We present a pipeline for reproducing the same approach on other disk chemical model sets.
description: 11 pages, 5 figures
Nanocrystalline materials for (solar) photoelectrochemical water splitting
Creators: name: Jami, Maryam
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2017
Subjects: subject: Water splitting
subject: photocatalysis
subject: hydrogen production
subject: water oxidation
subject: hematite
subject: pyrite
subject: Wasserspaltung
subject: Photokatalyse
subject: Wasserstoffproduktion
subject: Wasseroxidation
subject: Hämatit
subject: Pyrit
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: [no abstract]
Magnetoelastic effects in multiferroic HoMnO$_3$
Creators: name: Chatterji, Tapan
name: Hansen, Thomas
name: Kimber, Simon A. J.
name: Bhattacharya, Dipten
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have investigated magnetoelastic effects in multiferroic HoMnO$_3$ below the antiferromagnetic phase transition $T_N \approx 75$ K by neutron powder diffraction. The lattice parameter $a$ of the hexagonal unit cell of HoMnO$_3$ decrease in the usual way at lower temperatures and then shows abrupt contraction below $T_N$ whereas the lattice parameter $c$ increases continuously with decreasing temperature and shows an anomalous increase below $T_N$. The unit cell volume decreases continuously with decreasing temperature and undergoes abrupt contraction below $T_N$. By fitting the background thermal expansion for a nonmagnetic lattice with the Einstein-Grüneisen equation we determined the lattice strains $Δa$, $Δc$ and $ΔV$ due to the magnetoelastic effects as a function of temperature. We have also determined the temperature variation of the ordered magnetic moment of Mn ion by fitting the measured Bragg intensities of the nuclear and magnetic reflections with the known crystal and magnetic structure models.
description: arXiv admin note: text overlap with arXiv:1207.0301
The $S^3_\bfw$ Sasaki Join Construction
Creators: name: Boyer, Charles P.
name: Tønnesen-Friedman, Christina W.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Differential Geometry (math.DG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 53C25

description: The main purpose of this work is to generalize the $S^3_\bfw$ Sasaki join construction $M\star_\bfl S^3_\bfw$ described in \cite{BoTo14a} when the Sasakian structure on $M$ is regular, to the general case where the Sasakian structure is only quasi-regular. This gives one of the main results, Theorem 3.2, which describes an inductive procedure for constructing Sasakian metrics of constant scalar curvature. In the Gorenstein case ($c_1(\cald)=0$) we construct a polynomial whose coeffients are linear in the components of $\bfw$ and whose unique root in the interval $(1,\infty)$ completely determines the Sasaki-Einstein metric. In the more general case we apply our results to prove that there exists infinitely many smooth 7-manifolds each of which admit infinitely many inequivalent contact structures of Sasaki type admitting constant scalar curvature Sasaki metrics (see Corollary 6.15). We also discuss the relationship with a recent paper \cite{ApCa18} of Apostolov and Calderbank as well as the relation with K-stability.
description: 34 pages; An incorrect statement of Proposition 2.21 was corrected. This has no effect on the rest of the paper. Final version to appear in J. Math. Soc. Japan
Form-flexible handling and joining technology (formhand) for the forming and assembly of limp materials
Creators: name: Löchte, Christian
name: Kunz, Holger
name: Schnurr, Raphael
name: Langhorst, Sören
name: Dietrich, Franz
name: Raatz, Annika
name: Dilger, Klaus
name: Dröder, Klaus
Publisher: name: Amsterdam : Elsevier
Year: 2014
Subjects: subject: Assembly
subject: Automation
subject: Form-Flexible Handling and Joining
subject: Handling of Objects with Different Characteristics
subject: Preforming
subject: Process Design
subject: End effectors
subject: Joining
subject: Machine tools
subject: Automated process
subject: Granular fillers
subject: Handling tools
subject: Joining technology
subject: Material behavior
subject: On-line sensor
subject: Working state
subject: Materials handling
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: The assembly of limp, elastic or differently shaped objects poses a huge challenge which needs to be met by machine tools and the corresponding processes of handling, forming and joining. These processes are often carried out manually. This technological gap triggered the present work at the Technische Universität Braunschweig. A novel form-flexible handling tool (FormHand) is presented which focuses on the automation of these production steps taking into consideration the material behavior. The combination of the flexibility of both industrial robot and the FormHand end-effector allows for new processes appropriate for these materials. This article investigates the used materials of the granular filler and the cushion textile, the working states of FormHand and the use of online sensors for an automated process application.
Visual Object Tracking in First Person Vision
Creators: name: Dunnhofer, Matteo
name: Furnari, Antonino
name: Farinella, Giovanni Maria
name: Micheloni, Christian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The understanding of human-object interactions is fundamental in First Person Vision (FPV). Visual tracking algorithms which follow the objects manipulated by the camera wearer can provide useful information to effectively model such interactions. In the last years, the computer vision community has significantly improved the performance of tracking algorithms for a large variety of target objects and scenarios. Despite a few previous attempts to exploit trackers in the FPV domain, a methodical analysis of the performance of state-of-the-art trackers is still missing. This research gap raises the question of whether current solutions can be used ``off-the-shelf'' or more domain-specific investigations should be carried out. This paper aims to provide answers to such questions. We present the first systematic investigation of single object tracking in FPV. Our study extensively analyses the performance of 42 algorithms including generic object trackers and baseline FPV-specific trackers. The analysis is carried out by focusing on different aspects of the FPV setting, introducing new performance measures, and in relation to FPV-specific tasks. The study is made possible through the introduction of TREK-150, a novel benchmark dataset composed of 150 densely annotated video sequences. Our results show that object tracking in FPV poses new challenges to current visual trackers. We highlight the factors causing such behavior and point out possible research directions. Despite their difficulties, we prove that trackers bring benefits to FPV downstream tasks requiring short-term object tracking. We expect that generic object tracking will gain popularity in FPV as new and FPV-specific methodologies are investigated.
description: International Journal of Computer Vision (IJCV). arXiv admin note: substantial text overlap with arXiv:2108.13665
A Sharp Numerical Method for the Simulation of Stefan Problems with Convective Effects
Creators: name: Bayat, Elyce
name: Egan, Raphael
name: Bochkov, Daniil
name: Sauret, Alban
name: Gibou, Frederic
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We present a numerical method for the solution of interfacial growth governed by the Stefan model coupled with incompressible fluid flow. An algorithm is presented which takes special care to enforce sharp interfacial conditions on the temperature, the flow velocity and pressure, and the interfacial velocity. The approach utilizes level-set methods for sharp and implicit interface tracking, hybrid finite-difference/finite-volume discretizations on adaptive quadtree grids, and a pressure-free projection method for the solution of the incompressible Navier-Stokes equations. The method is first verified with numerical convergence tests using a synthetic solution. Then, computational studies of ice formation on a cylinder in crossflow are performed and provide good quantitative agreement with existing experimental results, reproducing qualitative phenomena that have been observed in past experiments. Finally, we investigate the role of varying Reynolds and Stefan numbers on the emerging interface morphologies and provide new insights around the time evolution of local and average heat transfer at the interface.
Ta4CoSi: a Tantalum-rich superconductor with a honeycomb network structure
Creators: name: Zeng, Lingyong
name: Hu, Xunwu
name: Guo, Shu
name: Lin, Gaoting
name: Song, Jing
name: Li, Kuan
name: He, Yiyi
name: Huang, Yanhao
name: Zhang, Chao
name: Yu, Peifeng
name: Ma, Jie
name: Yao, Dao-Xin
name: Luo, Huixia
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The crystal structure of solid-state materials with unique lattices is considered one of the main factors determining physical properties, including superconductivity. Materials with honeycomb lattices have inspired intense research interest for their novel properties. A previously unknown compound, Ta4CoSi, are discussed herein and its crystal structure and superconducting properties. It crystallizes in a CuAl2-type structure (space group P4/mcm, No. 124) with the lattice parameters a = b = 6.17755(7)Å and c = 4.98443(8) Å, featuring honeycomb networks of Ta-Ta in (110) plane. Superconductivity is observed below the critical temperature of 2.45 K, while lower and upper critical magnetic fields are 9.86 mT and 0.84 T, respectively. Experiments and theoretical calculations show that the honeycomb lattices significantly influence the superconducting properties. This material may thus provide a new platform for investigating the exotic superconductivity of honeycomb networks.
description: 23 pages, 8 figures, The manuscript with the same title will be published by PRB
title: Vorträge und Forschungen: Sonderbände, Vol 4 (1964): Traute Endemann: Markturkunde und Markt in Frankreich und Burgund vom 9. bis 11. Jahrhundert
Creators: name: Vorträge Und Forschungen: Sonderbände
Publisher: name: University Library Heidelberg
Year: 2015

description: Markturkunde und Markt in Frankreich und Burgund vom 9. bis 11. Jahrhundert
Probing new physics with tau-leptons at the LHC
Creators: name: Valencia, German
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We discuss new physics that can show up in the $τ^+τ^-$ production process at the LHC but not in the dimuon or the dielectron channels. We consider three different generic possibilities: a new resonance in the Drell-Yan process in the form of a non-universal $Z^\prime$; a new non-resonant contribution to $q\bar{q}\to τ^+τ^-$ in the form of leptoquarks; and contributions from gluon fusion due to effective lepton gluonic couplings. We emphasize the use of the charge asymmetry both to discover new physics and to distinguish between different possibilities
description: Prepared for TAU2012
Luzula campestris
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: 0. campestris (L.) DC. (A. campester L.) Cat. 74 und 424. Bis 3120 m. Ssp.typica (Beck) Becherer,comb. nova (A. camp. ssp. typicus Garns 1924, 0. camp. ssp. eu-campestris Hayek 1926 p. p.) - Die typische Form verbreitet. Var. minor Beauverd - 3: Val Ferret (Melly); Grundberg im Saastal (Hirschmann); Schienhorn (Tochenhorn) und Kaltwasser am Simplon (Melly). Var. sordida (Willd.) Koch - 2:Montagne de Fully (Garns); Grand Chavalard (F.). - 3: Valsorey (Guyot);ValdesDix (Pannatier);Saastal:oberesPlattjebeiFee,2600m (Hirschmann),obMattmark, 2400 m (idem). - 4: Lauigraben im Binntal (J.). Ssp. alpüia (Ten.) Wettst. - 3: Val de Bagnes (Vetter); Seilen im Val des Dix (idem); Mattertal, vielfach, hohe Stellen: Gornergrat, 2950 m (Braun-Blanquet 1919), Oberrothorn, 3020m (idem 1919), ebenda 3120 m (Gilomen 1938).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
title: Vorträge und Forschungen: Sonderbände, Vol 6 (1967): Traute Endemann: Vogtei und Herrschaft im alemannisch-burgundischen Grenzraum
Creators: name: Vorträge Und Forschungen: Sonderbände
Publisher: name: University Library Heidelberg
Year: 2015

description: Vogtei und Herrschaft im alemannisch-burgundischen Grenzraum
Preheating in radiative corrections to $ϕ^4$ inflation with non-minimal coupling in Palatini formulation
Creators: name: Bostan, Nilay
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We discuss the impact of the preheating stage in radiative corrections due to interaction of the inflaton to fermions to $ϕ^4$ inflation with non-minimal coupling in Palatini formulation. In Palatini inflation with large non-minimal coupling the field is allow to return to the plateau region during the reheating stage, so the average equation of state per oscillations is closer to $-1$ than to $1/3$. The incursion in the plateau leads, however, to a highly efficient tachyonic instability able to reheat the Universe in less than one e-fold. By taking into account prescription II discussed in the literature, in the wide range of $κ-ξ$, we figure out spectral index $n_s$ and tensor-to-scalar ratio $r$ which are compatible with the data given by the Keck Array/BICEP2 and Planck collaborations.
description: 11 pages, 1 figure
Power-law behaviors from the two-variable Langevin equation: Ito's and Stratonovich's Fokker-Planck equations
Creators: name: Guo, Ran
name: Du, Jiulin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: Chemical Physics (physics.chem-ph)
subject: Geophysics (physics.geo-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We study power-law behaviors produced from the stochastically dynamical system governed by the well-known two-variable Langevin equations. The stationary solutions of the corresponding Ito's, Stratonovich's and the Zwanzig's (the backward Ito's) Fokker-Planck equations are solved under a new fluctuation-dissipation relation, which are presented in a unified form of the power-law distributions with a power index containing two parameter kappa and sigma, where kappa measures a distance away from the thermal equilibrium and sigma distinguishes the above three forms of the Fokker-Planck equations. The numerical calculations show that the Ito's, the Stratonovich's and the Zwanzig's form of the power-law distributions are all exactly the stationary solutions based on the two-variable Langevin equations.
description: 12 pages,6 figures, 41 references
Network inference combining mutual information rate and statistical tests
Creators: name: Antonopoulos, Chris G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: In this paper, we present a method that combines information-theoretical and statistical approaches to infer connectivity in complex networks using time-series data. The method is based on estimations of the Mutual Information Rate for pairs of time-series and on statistical significance tests for connectivity acceptance using the false discovery rate method for multiple hypothesis testing. We provide the mathematical background on Mutual Information Rate, discuss the statistical significance tests and the false discovery rate. Further on, we present results for correlated normal-variates data, coupled circle and coupled logistic maps, coupled Lorenz systems and coupled stochastic Kuramoto phase oscillators. Following up, we study the effect of noise on the presented methodology in networks of coupled stochastic Kuramoto phase oscillators and of coupling heterogeneity degree on networks of coupled circle maps. We show that the method can infer the correct number and pairs of connected nodes, by means of receiver operating characteristic curves. In the more realistic case of stochastic data, we demonstrate its ability to infer the structure of the initial connectivity matrices. The method is also shown to recover the initial connectivity matrices for dynamics on the nodes of Erdős-Rényi and small-world networks with varying coupling heterogeneity in their connections. The highlight of the proposed methodology is its ability to infer the underlying network connectivity based solely on the recorded datasets.
description: 25 pages, 7 figures
Pitch Bearing Failures & Reliability Research
Creators: name: Mittleider, Cory
name: Stang, Nathan
name: Schroeppel, Werner
Publisher: name: Zenodo
Year: 2023

description: This presentation discusses Pitch Bearing Reliability Research on the following topics: Pitch Bearing Failure Modes – A Summary of Findings from RCA Performed Many Pitch Bearings Still Fail from Ring Cracks – What is the Unlearnt Lesson?
Forces on Solitons in Finite, Nonlinear, Planar Waveguides
Creators: name: Ramos, Juan I.
name: Villatoro, Francisco R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Optics (physics.optics)
subject: FOS: Physical sciences
subject: 35C08, 78A60

description: The forces acting on and the energies of solitons governed by the nonlinear Schrödinger equation in finite, planar waveguides with periodic and with homogeneous Dirichlet, Neumann and Robin boundary conditions are determined by means of a quantum analogy. It is shown that these densities have S-shape profiles and increase as the hardness of the boundary conditions is increased.
description: arXiv admin note: substantial text overlap with arXiv:1301.3944
Formality of the Dolbeault complex and deformations of holomorphic Poisson manifolds
Creators: name: Chen, Youming
Publisher: name: arXiv
Year: 2022
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: The purpose of this paper is to study the properties of holomorphic Poisson manifolds $(M,π)$ under the assumption of $\partial_{}\bar{\partial}$--lemma or $\partial_π\bar{\partial}$--lemma. Under these assumptions,we show that the Koszul--Brylinski homology can be recovered by the Dolbeault cohomology, and prove that the DGLA $(A_M^{\bullet,\bullet},\bar{\partial},[-,-]_{\partial_π})$ is formal.Furthermore,we discuss the Maurer--Cartan elements of $(A_M^{\bullet,\bullet}[[t]],\bar{\partial},[-,-]_{\partial_π})$ which induce the deformations of complex structure of $M$.
description: 18 pages. Comments are welcome!
title: Vorträge und Forschungen: Sonderbände, Vol 18 (1975): Johanne Autenrieth und Raymund Kottje: Kirchenrechtliche Texte im Bodenseegebiet
Creators: name: Vorträge Und Forschungen: Sonderbände
Publisher: name: University Library Heidelberg
Year: 2015

description: Mittelalterliche Überlieferung in Konstanz, auf der Reichenau und in St. Gallen
description: Mittelalterliche Überlieferung in Konstanz, auf der Reichenau und in St. Gallen
description: Titel / Impressum
 Inhaltsverzeichnis
 Die kanonistischen Handschriften der Dombibliothek Konstanz...5-21
 Kirchenrechtliche Interessen im Bodenseeraum vom 9. bis 12. Jahrhundert...23-41
 Verlagsinformationen
Controlled emission time statistics of a dynamic single-electron transistor
Creators: name: Brange, Fredrik
name: Schmidt, Adrian
name: Bayer, Johannes C.
name: Wagner, Timo
name: Flindt, Christian
name: Haug, Rolf J.
Publisher: name: Washington : American Association for the Advancement of Science (A A A S)
Year: 2021
Subjects: subject: Capacitance measurement
subject: Electrons
subject: Emitted electron
subject: Future technologies
subject: Modulation frequencies
subject: Non-adiabatic dynamics
subject: Quantum technologies
subject: Qubit measurement
subject: Single-electron levels
subject: Temporal fluctuation
subject: Single electron transistors
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: Quantum technologies involving qubit measurements based on electronic interferometers rely critically on accurate single-particle emission. However, achieving precisely timed operations requires exquisite control of the single-particle sources in the time domain. Here, we demonstrate accurate control of the emission time statistics of a dynamic single-electron transistor by measuring the waiting times between emitted electrons. By ramping up the modulation frequency, we controllably drive the system through a crossover from adiabatic to nonadiabatic dynamics, which we visualize by measuring the temporal fluctuations at the single-electron level and explain using detailed theory. Our work paves the way for future technologies based on the ability to control, transmit, and detect single quanta of charge or heat in the form of electrons, photons, or phonons. Copyright © 2021 The Authors, some rights reserved;
title: Developing Algorithms to Detect Incidents on Freeways From Loop Detector and Vehicle Re-Identification Data
Creators: name: Adhikari,  Biraj
Publisher: name: Old Dominion University Libraries
Year: 2019

description: A new approach for testing incident detection algorithms has been developed and is presented in this thesis. Two new algorithms were developed and tested taking California #7, which is the most widely used algorithm to date, and SVM (Support Vector Machine), which is considered one of the best performing classifiers, as the baseline for comparisons. Algorithm #B in this study uses data from Vehicle Re-Identification whereas the other three algorithms (California #7, SVM and Algorithm #A) use data from a double loop detector for detection of an incident. A microscopic traffic simulator is used for modeling three types of incident scenarios and generating the input data. Two incident scenarios are generated by closing either one lane or two lanes of a four-lane highway. The third scenario involves bottleneck blocking two lanes of the freeway with an incident occurring in the upstream of the bottleneck. The highway network is five miles long and simulated in VISSIM. Traffic parameters like occupancy, speed, flow and number of vehicles passing through the loop detector are collected to assess the traffic condition between the sensors or detectors. The proposed performance test inspects whether the algorithms thus tested were able to detect any occurrences and incidences within the first minutes in different scenarios and compares their respective detection to identify the best performing algorithm in all the contingencies. The results indicate that the implementation of this new approach not only reduces the dilemma of selecting thresholds but also checks algorithm performance in different incident scenarios so that the response time for clearing such incidences is as short as possible. Likewise, making use of Re identification data and travel time makes the incident detection more trivial and self-evident and thus outperformed the algorithms using traditional data like occupancy speed and volume in uncontested traffic conditions. Further different SVM models were trained and tested inspecting the effects of change in location of incident concerning detectors. However, using data from loop detector performed well when the incident happened at the upstream detector while using that from re-identification encountered delays in overall detection time for the same.
Temperature dependence of upper critical fields and coherence lengths for optimally-doped $YBa_2Cu_3O_{7-δ}$ thin films
Creators: name: Petrenko, E. V.
name: Omelchenko, L. V.
name: Terekhov, A. V.
name: Kolesnichenko, Yu. A.
name: Rogacki, K.
name: Sergeyev, D. M.
name: Solovjov, A. L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report the comprehensive comparative analysis of the upper critical magnetic fields $μ_{0}H_{c2}(0)$ obtained within Ginzburg-Landau and Werthamer-Helfand-Hohenberg theories for optimally-doped $YBa_2Cu_3O_{7-δ}$ thin films. For different orientations of the magnetic field, our calculations give 638 and 153 T for $μ_{0}H_{c2}(0)$, H || ab and $μ_{0}H_{c2}(0)$, H || c, respectively, when using $H_{c2}(0)$. For the first time, the temperature dependences of coherence lengths $ξ_{ab}(T)$ and $ξ_{c}(T)$ within proposed theories were determined using 50 and 90% criteria of the normal state resistivity value $ρ_{N}$. The Ginzburg-Landau 0.9$ρ_{N}$ approach gives $ξ_{ab}(0)$=11.8 A, and $ξ_{c}(0)$=3.0 A which are in a good agreement with literature data. The implications of very short coherence lengths in HTSCs are discussed.
description: Table 3, figures 5, pages 9
Revisit the Poynting vector in PT-symmetric coupled waveguides
Creators: name: Zhang, Xin-Zhe
name: Luo, Ru-Zhi
name: Chen, Jing
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We show that the time-averaged Poynting vector in parity-time (PT ) symmetric coupled waveguides is always positive and cannot explain the stopped light at exceptional points (EPs). In order to solve this paradox, we must accept the fact that the fields E and H and the Poynting vector in non-Hermitian systems are in general complex. Based on the original definition of the instantaneous Poynting vector, a formula on the group velocity is proposed, which agrees perfectly well with that calculated directly from the dispersion curves. It explains not only the stopped light at EPs, but also the fast-light effect near it. This investigation bridges a gap between the classic electrodynamics and the non-Hermitian physics, and highlights the novelty of non-Hermitian optics.
title: Vorträge und Forschungen: Sonderbände, Vol 25 (1980): Wolfgang Herborn und Klaus Militzer: Der Kölner Weinhandel
Creators: name: Vorträge Und Forschungen: Sonderbände
Publisher: name: University Library Heidelberg
Year: 2015

description: Seine sozialen und politischen Auswirkungen im ausgehenden 14. Jahrhundert
description: Seine sozialen und politischen Auswirkungen im ausgehenden 14. Jahrhundert
description: Der Kölner Weinhandel. Seine sozialen und politischen Auswirkungen im ausgehenden 14. Jahrhundert
Sensitivity to perturbations and quantum phase transitions
Creators: name: Wisniacki, D. A.
name: Roncaglia, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The local density of states or its Fourier transform, usually called fidelity amplitude, are important measures of quantum irreversibility due to imperfect evolution. In this Rapid Communication we study both quantities in a paradigmatic many body system, the Dicke Hamiltonian, where a single-mode bosonic field interacts with an ensemble of N two-level atoms. This model exhibits a quantum phase transition in the thermodynamic limit, while for finite instances the system undergoes a transition from quasi-integrability to quantum chaotic. We show that the width of the local density of states clearly points out the imprints of the transition from integrability to chaos but no trace remains of the quantum phase transition. The connection with the decay of the fidelity amplitude is also established.
description: 5 pages, 4 figures, accepted for publication PRE rapid communication
Hydrogen lines in LAMOST low resolution spectra of RR Lyrae stars
Creators: name: Yang, F.
name: Deng, L.
name: Liu, C.
name: Carlin, J. L.
name: Newberg, H. Jo
name: Carrell, K.
name: Zhang, X.
name: Bai, Z.
name: Wang, F.
name: Zhang, H.
name: Wang, K.
name: Xin, Y.
name: Xu, Y.
name: Gao, S.
name: Zhang, Y.
name: Li, J.
name: Zhao, Y
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The LAMOST spectroscopic survey for Galactic structure and evolution has been in operation since October 2012, following a one-year pilot survey. The pilot survey produced a data release containing over 600,000 stellar spectra. By cross-checking with a large time series photometric database of RR Lyrae stars in high Galactic latitude regions, we found a total number of 157 stars that have been observed with LAMOST. In this sample, we successfully captured three RR Lyrae stars in the fast expansion phase, all of them showing significant hypersonic shock wave features in the spectra. By fitting the Hα line shape, we determine that the emission features seen within the broader Hα absorption line suggest hypersonic relative motions in the atmospheres of these three objects. With a further LAMOST survey of millions of stars, we will capture a large sample of RR Lyrae stars in their hypersonic expansion phase, and therefore provide a large database for the study of the internal structure and pulsation mechanism of RR Lyrae stars.
description: 17 pages, 3 figures, Accepted by New Astronomy