cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Atomic Hydrogen Cloud in the Saturnian System
Creators: name: Tseng, W. -L.
name: Johnson, R. E.
name: Ip, W. -H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The Voyager flyby observations revealed that a very broad doughnut shaped distribution of the hydrogen atoms existed in the Saturnian magnetosphere. Recent Cassini observations confirmed the local-time asymmetry but also showed the hydrogen cloud density increases with decreasing distance to Saturn. The origin of the atomic hydrogen cloud has been debated ever since. Therefore, we have carried out a global investigation of the atomic hydrogen cloud taking into account all possible sources: 1) the Saturnian atmosphere, 2) the H2 atmosphere of main rings, 3) Enceladus H2O and OH torus, 4) Titan H2 torus and 5) the atomic hydrogen directly escaping from Titan. We show that the H ejection velocity and angle distribution are modified by collisions of the hot H, produced by electron-impact dissociation of H2, with the ambient atmospheric H2 and H. This in turn affects the morphology of the escaping hydrogen as does the morphology of the ionospheric electron distribution. That Saturn atmosphere is an important source is suggested by the fact that the H cloud peaks well below the ring plane, a feature that, so far, we can not reproduce by the dissociation of the ring H2 atmosphere or other proposed sources. Our simulations show that H directly escaping from Titan is a major contribution in the outer magnetosphere. The morphology of Titan H torus, shaped by the solar radiation pressure and the Saturnian oblateness, can account for the local time asymmetry near Titan orbit. Dissociation of H2O and OH in the Enceladus torus contributes inside ~5 RS, but dissociation of Titan H2 torus does not due to the significant energy released. The total number of H observed by Cassini inside 5 RS: our modeling results suggest ~20% from dissociation in the Enceladus torus, ~10% from dissociation of ring H2 atmosphere, and ~50% from Titan H torus implying that ~20% comes from the Saturnian atmosphere.
description: This paper has been submitted to P&SS
$\mathit{tmf}$-based Mahowald invariants
Creators: name: Quigley, J. D.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55P42, 55Q45, 55Q51

description: The $2$-primary homotopy $β$-family, defined as the collection of Mahowald invariants of Mahowald invariants of $2^i$, $i \geq 1$, is an infinite collection of periodic elements in the stable homotopy groups of spheres. In this paper, we calculate $\mathit{tmf}$-based approximations to this family. Our calculations combine an analysis of the Atiyah-Hirzebruch spectral sequence for the Tate construction of $\mathit{tmf}$ with trivial $C_2$-action and Behrens' filtered Mahowald invariant machinery.
description: v2: 50 pages, 42 figures. Charts updated for readability. Some other minor corrections. To appear in Algebraic & Geometric Topology
title: Werner Zanier, Das Alpenrheintal in den Jahrzehnten um Christi Geburt. Forschungsstand zu den historischen und archäologischen Quellen der Spätlatèneund frühen römischen Kaiserzeit zwischen Bodensee und Bündner Pässen (Vorarlberg, Liechtenstein, Sankt Gallen, Graubünden)
Creators: name: Grabherr, Gerald
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Werner Zanier, Das Alpenrheintal in den Jahrzehnten um Christi Geburt. Forschungsstand zu den historischen und archäologischen Quellen der Spätlatèneund frühen römischen Kaiserzeit zwischen Bodensee und Bündner Pässen (Vorarlberg, Liechtenstein, Sankt Gallen, Graubünden). Veröffentlichungen der Kommission zur vergleichenden Archäologie römischer Alpen- und Donauländer der bayerischen Akademie der Wissenschaften. Münchner Beiträge zur Vor- und Frühgeschichte Band 59. C. H. Beck, München 2006. 336 Seiten, 60 Abbildungen, 1 Kartenbeilage.
title: Testing Orem's Dependent Care Agency Construct: Parents as Health Educators in the Home
Creators: name: Baldwin, JoAnn M.
Publisher: name: Old Dominion University Libraries
Year: 1987

description: The capacity of parents to act as health educators in the home is proposed as a functional piece of Orem's dependent care agency construct. A new data collection instrument, the Health Education Questionnaire, was developed to explore the conceptual dimensions of an intellectual pre-production phase of health action-taking. Parents' self-reported knowledge and beliefs regarding selected health topics, as well as their perceptions of ego strength and valuing health were proposed as independent factors in dependent care agency related to health education in the home. Methodology included the investigation of reliability using Cronbach's alpha and validation of the agency construct using factor analytic techniques. The resulting two-factor model indicated separate cognitive and affective dimensions of agency, suggesting that knowledge and beliefs are significant elements related to the ability of parents of school-age children to function as health educators. Recommendations for further testing and refinement of the new instrument are given.
Cause of the charge radius isotope shift at the \emph{N}=126 shell gap
Creators: name: Goddard, P. M.
name: Stevenson, P. D.
name: Rios, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We discuss the mechanism causing the `kink' in the charge radius isotope shift at the N=126 shell closure. The occupation of the 1$i_{11/2}$ neutron orbital is the decisive factor for reproducing the experimentally observed kink. We investigate whether this orbital is occupied or not by different Skyrme effective interactions as neutrons are added above the shell closure. Our results demonstrate that several factors can cause an appreciable occupation of the 1$i_{11/2}$ neutron orbital, including the magnitude of the spin-orbit field, and the isoscalar effective mass of the Skyrme interaction. The symmetry energy of the effective interaction has little influence upon its ability to reproduce the kink.
description: 4 pages, 4 figures, to be submitted to proceedings of INPC 2013
Volumetric Particle Tracking Velocimetry (PTV) Uncertainty Quantification
Creators: name: Bhattacharya, Sayantan
name: Vlachos, Pavlos P.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Image and Video Processing (eess.IV)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We introduce the first comprehensive approach to determine the uncertainty in volumetric Particle Tracking Velocimetry (PTV) measurements. Volumetric PTV is a state-of-the-art non-invasive flow measurement technique, which measures the velocity field by recording successive snapshots of the tracer particle motion using a multi-camera set-up. The measurement chain involves reconstructing the three-dimensional particle positions by a triangulation process using the calibrated camera mapping functions. The non-linear combination of the elemental error sources during the iterative self-calibration correction and particle reconstruction steps increases the complexity of the task. Here, we first estimate the uncertainty in the particle image location, which we model as a combination of the particle position estimation uncertainty and the reprojection error uncertainty. The latter is obtained by a gaussian fit to the histogram of disparity estimates within a sub-volume. Next, we determine the uncertainty in the camera calibration coefficients. As a final step the previous two uncertainties are combined using an uncertainty propagation through the volumetric reconstruction process. The uncertainty in the velocity vector is directly obtained as a function of the reconstructed particle position uncertainty. The framework is tested with synthetic vortex ring images. The results show good agreement between the predicted and the expected RMS uncertainty values. The prediction is consistent for seeding densities tested in the range of 0.01 to 0.1 particles per pixel. Finally, the methodology is also successfully validated for an experimental test case of laminar pipe flow velocity profile measurement where the predicted uncertainty is within 17% of the RMS error value.
The use of near infrared spectroscopy in carbon and nitrogen mineralisation studies
Creators: name: Hartmann, Hans Peter
Publisher: name: Hannover : Universität
Year: 2002
Subjects: subject: Near infrared spectroscopy
subject: N mineralisation
subject: simulation models
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: [no abstract]
Unsupervised Neural Dialect Translation with Commonality and Diversity Modeling
Creators: name: Wan, Yu
name: Yang, Baosong
name: Wong, Derek F.
name: Chao, Lidia S.
name: Du, Haihua
name: Ao, Ben C. H.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: As a special machine translation task, dialect translation has two main characteristics: 1) lack of parallel training corpus; and 2) possessing similar grammar between two sides of the translation. In this paper, we investigate how to exploit the commonality and diversity between dialects thus to build unsupervised translation models merely accessing to monolingual data. Specifically, we leverage pivot-private embedding, layer coordination, as well as parameter sharing to sufficiently model commonality and diversity among source and target, ranging from lexical, through syntactic, to semantic levels. In order to examine the effectiveness of the proposed models, we collect 20 million monolingual corpus for each of Mandarin and Cantonese, which are official language and the most widely used dialect in China. Experimental results reveal that our methods outperform rule-based simplified and traditional Chinese conversion and conventional unsupervised translation models over 12 BLEU scores.
description: AAAI 2020
Deformation of Multiple Zeta Values and Their Logarithmic Interpretation in Positive Characteristic
Creators: name: Gezmis, Oguz
Publisher: name: Deutsche Mathematiker-Vereinigung
Year: 2020

description: Pellarin introduced the deformation of multiple zeta values of Thakur as elements over Tate algebras. In this paper, we relate these values to a certain coordinate of the logarithm of a higher dimensional Drinfeld module over the Tate algebra which we will introduce. Moreover, we define multiple polylogarithms in our setting and represent deformation of multiple zeta values as a linear combination of multiple polylogarithms. As an application of our results, we also write Dirichlet-Goss multiple $L$-values as a linear combination of twisted multiple polylogarithms at algebraic points.
description: DOCUMENTA MATHEMATICA, Vol 25 (2020), p. 2355-2411
Compact Operators in Regular LCQ Groups
Creators: name: Kalantar, Mehrdad
Publisher: name: arXiv
Year: 2013
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics

description: We show that a regular locally compact quantum group $\mathbb{G}$ is discrete if and only if $L^\infty(\mathbb{G})$ contains non-zero compact operators on $L^2(\mathbb{G})$. As a corollary we classify all discrete quantum groups among regular locally compact quantum groups $\mathbb{G}$ where $L^1(\mathbb{G})$ has the Radon--Nikodym property.
description: 5 pages; will appear in the Canadian Mathematical Bulletin
Statistical Inference for High-Dimensional Matrix-Variate Factor Model
Creators: name: Chen, Elynn Y.
name: Fan, Jianqing
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistics Theory (math.ST)
subject: Methodology (stat.ME)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: This paper considers the estimation and inference of the low-rank components in high-dimensional matrix-variate factor models, where each dimension of the matrix-variates ($p \times q$) is comparable to or greater than the number of observations ($T$). We propose an estimation method called $α$-PCA that preserves the matrix structure and aggregates mean and contemporary covariance through a hyper-parameter $α$. We develop an inferential theory, establishing consistency, the rate of convergence, and the limiting distributions, under general conditions that allow for correlations across time, rows, or columns of the noise. We show both theoretical and empirical methods of choosing the best $α$, depending on the use-case criteria. Simulation results demonstrate the adequacy of the asymptotic results in approximating the finite sample properties. The $α$-PCA compares favorably with the existing ones. Finally, we illustrate its applications with a real numeric data set and two real image data sets. In all applications, the proposed estimation procedure outperforms previous methods in the power of variance explanation using out-of-sample 10-fold cross-validation.
title: Ludwig Rübekeil, Diachrone Studien zur Kontaktzone zwischen Kelten und Germanen
Creators: name: Zimmer, Stefan
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Ludwig Rübekeil, Diachrone Studien zur Kontaktzone zwischen Kelten und Germanen. Österreichische Akademie der Wissenschaften, Philosophisch historische Klasse, Sitzungsberichte, Band 699. Verlag der Österreichischen Akademie der Wissenschaften, Wien 2002. IX und 498 Seiten.
Experimentelle Entwicklung von Bondprozessen mit niedrigschmelzenden eutektischen Legierungen auf flexiblen Substraten mit niedriger Glasübergangstemperatur
Creators: name: Moakhar Ep Bouguecha, Sonda
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2015
Subjects: subject: Low temperature
subject: eutectic bonding
subject: Polymer
subject: Eutektisches Bonden
subject: Niedrigtemperatur
subject: Bonden
subject: Eutektische Legierung
subject: Polymere
subject: Niedrigtemperatur
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Das übergeordnete Ziel dieser Arbeit besteht in der Grundlagenuntersuchung und Optimierung von eutektischen Bondprozessen (auch Anlegieren genannt) für die Befestigung von elektronischen Bauteilen auf flexiblen Substraten. In diesem Zusammenhang sind umfangreiche experimentelle Untersuchungen und zahlreiche Parametervariationen vorgesehen um möglichst stabile mechanische und elektrische Bondverbindung zwischen den Fügepartnern zu erreichen. Dafür werden Chips aus Silizium zunächst auf starren und dann auf flexiblen Substraten durch Anlegieren verbunden. Um eine zuverlässige Bondverbindung auf flexiblen Substraten mit niedrigen Glasübergangstemperaturen zu erzielen, werden die eutektischen Indium-Zinn- und Indium-Bismut-Legierungen zum Einsatz kommen. Die experimentelle Methodik basiert auf der Variation der Bondprozessparameter: Temperatur, Druck und Dauer um die Bondverbindung insbesondere hinsichtlich der mechanischen Stabilität zu optimieren. Hierbei wird diese durch die Scherfestigkeit beurteilt. Ferner wurde ebenfalls der elektrische Widerstand der Verbindung gemessen um die elektrische Eigenschaft der Verbindung zu bewerten.
Potentilla puberula
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: P.puberula X recta Cat. 94. Zu streichen.
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Multiscale analysis for traveling-pulse solutions to the stochastic FitzHugh-Nagumo equations
Creators: name: Eichinger, Katharina
name: Gnann, Manuel V.
name: Kuehn, Christian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: Dynamical Systems (math.DS)
subject: Functional Analysis (math.FA)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 35C07, 35K57, 35Q92, 35R60, 60H15

description: We investigate the stability of traveling-pulse solutions to the stochastic FitzHughNagumo equations with additive noise. Special attention is given to the effect of small noise on the classical deterministically stable fast traveling pulse. Our method is based on adapting the velocity of the traveling wave by solving a scalar stochastic ordinary differential equation (SODE) and tracking perturbations to the wave meeting a system of a scalar stochastic partial differential equation (SPDE) coupled to a scalar ordinary differential equation (ODE). This approach has been recently employed by Krüger and Stannat for scalar stochastic bistable reaction-diffusion equations such as the Nagumo equation. A main difference in our situation of an SPDE coupled to an ODE is that the linearization has essential spectrum parallel to the imaginary axis and thus only generates a strongly continuous semigroup. Furthermore, the linearization around the traveling wave is not self-adjoint anymore, so that fluctuations around the wave cannot be expected to be orthogonal in a corresponding inner product. We demonstrate that this problem can be overcome by making use of Riesz instead of orthogonal spectral projections as recently employed in a series of papers by Hamster and Hupkes in case of analytic semigroups. We expect that our approach can also be applied to traveling waves and other patterns in more general situations such as systems of SPDEs with linearizations only generating a strongly continuous semigroup. This provides a relevant generalization as these systems are prevalent in many applications.
description: 45 pages, revised version, extended literature discussion, Proposition 3.6 added
The use of piscine innate immune responses as indicators for environmental pollution in marine ecosystems
Creators: name: Skouras, Andreas
Publisher: name: Hannover : Universität
Year: 2002
Subjects: subject: Fish
subject: immune response
subject: environmental pollution
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: [no abstract]
Inverse Scattering for Critical Semilinear Wave Equations
Creators: name: Barreto, Antônio Sá
name: Uhlmann, Gunther
name: Wang, Yiran
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We show that the scattering operator for defocusing energy critical semilinear wave equations \square u+f(u)=0, with f C-infinity and f ~ u^5, in three space dimensions, determines f.
Entwicklung von rekombinanten Antikörpern gegen das aviäre Enzephalomyelitis Virus
Creators: name: Wichmann, Maren
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2010
Subjects: subject: Aviäres Enzephalomyelitis Virus
subject: scFv
subject: Phage Display
subject: Panning
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Squark flavour violation and naturalness at the LHC
Creators: name: Blanke, Monika
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: While rare meson decays place stringent constraints on much of the flavour violating parameter space of supersymmetric models, the mixing between right-handed top and charm squarks is so far unconstrained by the available data. Such mixing has in fact a very appealing phenomenology: it significantly weakens the current experimental bounds from direct squark searches and leads to a modest reduction of fine-tuning. The scenario can be tested already with the present 8 TeV data set by looking for the flavour violating final state t anti-t + missing E_T, thanks to the large squark pair production cross section.
description: 5 pages, 7 figures. Proceedings for LHCP 2013: First Large Hadron Collider Physics Conference in Barcelona, May 13-18, 2013
title: Home Health Nurses: Are They Satisfied With Their Work Environment
Creators: name: Abu Salem, Said
Publisher: name: Old Dominion University Libraries
Year: 1999

description: Objectives. This study addressed the questions, (1) To what degree are home health nurses satisfied in their job? (2) What variable ranks as the most important for home health nurses' satisfaction? and, (3) Is there a difference between job satisfaction of full time employment, part time, and per diem home health nurses?

Methods. The data were collected from six home health agencies in the Hampton Roads Area resulting in a sample of (N = 72). The McCloskey and Mueller Satisfaction Scale developed in 1990 (MMSS) was used to measure home health nurses' satisfaction.

Results. The home health nurses' satisfaction indicators were ranked from the highest to the lowest as follows: scheduling, praise and recognition, interaction opportunities, reward, control and responsibility, and professional opportunities. The overall mean global score of the MMSS was (3.54), which reflects marginal job satisfaction among home health nurses in the Hampton Roads Area. The overall mean score of the full time employed nurses was higher than the overall mean score of per diem and part time nurses.

Conclusions. On the basis of the study findings, home health nurses are marginally satisfied with their work environment in the Hampton Roads Area.
Charge Relaxation in a Single Electron Si/SiGe Double Quantum Dot
Creators: name: Wang, K.
name: Payette, C.
name: Dovzhenko, Y.
name: Deelman, P. W.
name: Petta, J. R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We measure the interdot charge relaxation time T_1 of a single electron trapped in an accumulation mode Si/SiGe double quantum dot. The energy level structure of the charge qubit is determined using photon assisted tunneling, which reveals the presence of a low lying excited state. We systematically measure T_1 as a function of detuning and interdot tunnel coupling and show that it is tunable over four orders of magnitude, with a maximum of 45 microseconds for our device configuration. Measured relaxation times are consistent with a phonon mediated energy relaxation process and indicate that low lying excited states may have important implications in the development of silicon spin qubits.
description: Related papers at http://pettagroup.princeton.edu
Reconfigurable Intelligent Surface for Physical Layer Security in 6G-IoT: Designs, Issues, and Advances
Creators: name: Khalid, Waqas
name: Rehman, M. Atif Ur
name: Van Chien, Trinh
name: Kaleem, Zeeshan
name: Lee, Howon
name: Yu, Heejung
Publisher: name: arXiv
Year: 2023
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences
subject: 10.1109/JIOT.2023.3297241

description: Sixth-generation (6G) networks pose substantial security risks because confidential information is transmitted over wireless channels with a broadcast nature, and various attack vectors emerge. Physical layer security (PLS) exploits the dynamic characteristics of wireless environments to provide secure communications, while reconfigurable intelligent surfaces (RISs) can facilitate PLS by controlling wireless transmissions. With RIS-aided PLS, a lightweight security solution can be designed for low-end Internet of Things (IoT) devices, depending on the design scenario and communication objective. This article discusses RIS-aided PLS designs for 6G-IoT networks against eavesdropping and jamming attacks. The theoretical background and literature review of RIS-aided PLS are discussed, and design solutions related to resource allocation, beamforming, artificial noise, and cooperative communication are presented. We provide simulation results to show the effectiveness of RIS in terms of PLS. In addition, we examine the research issues and possible solutions for RIS modeling, channel modeling and estimation, optimization, and machine learning. Finally, we discuss recent advances, including STAR-RIS and malicious RIS.
description: Accepted for IEEE Internet of Things Journal
Transport durch Nanostrukturen : Riemann-Hilbert-Zugang für zeitabhängige Störungen
Creators: name: Zobeltitz, Carsten Von
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2010
Subjects: subject: Fermi edge singularity
subject: resonant tunneling
subject: low-dimensional systems
subject: Fermikantensingularität
subject: resonantes Tunneln
subject: niedrigdimensionale Systeme
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Effect of ion-neutral collisions in simulations of emerging active regions
Creators: name: Leake, James E.
name: Linton, Mark G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We present results of 2.5D numerical simulations of the emergence of sub-surface magnetic flux into the solar atmosphere, with emerging flux regions ranging from $10^{18}$ to $10^{21}$ Mx, representing both ephemeral and active regions. We include the presence of neutral Hydrogen in the governing equations, improve upon previous models by including the ionization in the equation of state, and use a more realistic convection zone model. We find that ionization and recombination of plasma during the rise of a convection zone flux tube reduces the rise speed of the tube's axis. The presence of neutral Hydrogen allows the effective flow of mass across fieldlines, by the addition of a Pedersen resistivity to the generalized Ohm's law, which dissipates current perpendicular to the magnetic field. This causes an increase of up to 10% in the amount of magnetic in-plane flux supplied to the corona and a reduction of up to 89% in the amount of sub-surface plasma brought up into the corona. However, it also reduces the amount of free magnetic energy supplied to the corona, and thus does not positively affect the likelihood of creating unstable coronal structures.
description: 18 figures
Theoretical study of weakly bound vibrational states of the sodium trimer : numerical methods; prospects for the formation of Na3 in an ultracold gas
Creators: name: Willner, Kai
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2006
Subjects: subject: Vibrational levels
subject: collocation method
subject: Fourier grid
subject: discrete sine transform
subject: atom-molecule collisions
subject: hyperspherical coordinates
subject: Jacobi coordinates
subject: diabatic-by-sector method
subject: quantum defect
subject: photoassociation
subject: selection rules
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Revamping Binary Analysis with Sampling and Probabilistic Inference
Creators: name: Zhang, Zhuo
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: Automated software engineering
Software and application security
Software testing, verification and validation

description: Binary analysis, a cornerstone technique in cybersecurity, enables the examination of binary executables, irrespective of source code availability. It plays a critical role in understanding program behaviors, detecting software bugs, and mitigating potential vulnerabilities, specially in situations where the source code remains out of reach. However, aligning the efficacy of binary analysis with that of source-level analysis remains a significant challenge, primarily due to the uncertainty caused by the loss of semantic information during the compilation process.
 This dissertation presents an innovative probabilistic approach, termed as probabilistic binary analysis, designed to combat the intrinsic uncertainty in binary analysis. It builds on the fundamental principles of program sampling and probabilistic inference, enhanced further by an iterative refinement architecture. The dissertation suggests that a thorough and practical method of sampling program behaviors can yield a substantial quantity of hints which could be instrumental in recovering lost information, despite the potential inclusion of some inaccuracies. Consequently, a probabilistic inference technique is applied to systematically incorporate and process the collected hints, suppressing the incorrect ones, thereby enabling the interpretation of high-level semantics. Furthermore, an iterative refinement mechanism is deployed to augment the efficiency of the probabilistic analysis in subsequent applications, facilitating the progressive enhancement of analysis outcomes through an automated or human-guided feedback loop.
 This work offers an in-depth understanding of the challenges and solutions related to assessing low-level program representations and systematically handling the inherent uncertainty in binary analysis. It aims to contribute to the field by advancing the development of precise, reliable, and interpretable binary analysis solutions, thereby setting the groundwork for future exploration in this domain.
Lower bounds for discrete negative moments of the Riemann zeta function
Creators: name: Heap, Winston
name: Li, Junxian
name: Zhao, Jing
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We prove lower bounds for the discrete negative $2k$th moment of the derivative of the Riemann zeta function for all fractional $k\geqslant 0$. The bounds are in line with a conjecture of Gonek and Hejhal. Along the way, we prove a general formula for the discrete twisted second moment of the Riemann zeta function. This agrees with a conjecture of Conrey and Snaith.
description: 42 pages
Families of quasi-local conservation laws and quantum spin transport
Creators: name: Prosen, Tomaz
name: Ilievski, Enej
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: For fundamental integrable quantum chains with deformed symmetries we outline a general procedure for defining a continuous family of quasi-local operators whose time-derivative is supported near the two boundary sites only. The program is implemented for a spin 1/2 XXZ chain, resulting in improved rigorous estimates for the high temperature spin Drude weight.
description: 4+eps pages in RevTex, with 1 pdf figure
title: Rüdiger Splitter, Die "Kypseloslade" in Olympia. Form, Funktion und Bildschmuck: Eine archäologische Rekonstruktion
Creators: name: Winkler-Horaček, Lorenz
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Rüdiger Splitter, Die "Kypseloslade" in Olympia. Form, Funktion und Bildschmuck: Eine archäologische Rekonstruktion. Verlag Philipp von Zabern, Mainz 2000. 173 Seiten, 46 Abbildungen, 2 Tafeln, 1 Falttafel, Frontispiz.
Quantum Hall effect in graphene with superconducting electrodes
Creators: name: Rickhaus, Peter
name: Weiss, Markus
name: Marot, Laurent
name: Schönenberger, Christian
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have realized an integer quantum Hall system with superconducting contacts by connecting graphene to niobium electrodes. Below their upper critical field of 4 tesla, an integer quantum Hall effect coexists with superconductivity in the leads, but with a plateau conductance that is larger than in the normal state. We ascribe this enhanced quantum Hall plateau conductance to Andreev processes at the graphene-superconductor interface leading to the formation of so-called Andreev edge-states. The enhancement depends strongly on the filling-factor, and is less pronounced on the first plateau, due to the special nature of the zero energy Landau level in monolayer graphene.
description: 10 pages, 4 figures
Finite temperature QCD with $N_f=2+1+1$ Wilson twisted mass fermions at physical pion, strange and charm masses
Creators: name: Kotov, Andrey Yu.
name: Lombardo, Maria Paola
name: Trunin, Anton M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss recent progress in studying Quantum Chromodynamics at finite temperature using $N_f=2+1+1$ Wilson twisted mass fermions. Particular interest is in QCD symmetries and their breaking and restoration. First, we discuss the behaviour of the $η'$ meson at finite temperature, which is tightly connected to the axial and chiral symmetries. The results suggest a small decrease of the $η'$ mass in the pseudo-critical region coming close to the non-anomalous contribution and subsequent growth at large temperatures. Second, we present the first results of lattice simulations of Quantum Chromodynamics with $N_f=2+1+1$ twisted mass Wilson fermions at physical pion, strange and charm masses. We estimate the chiral pseudo-critical temperatures for different observables. Our preliminary results are consistent with a second order transition in the chiral limit, however other scenarios are not excluded.
description: 5 pages, 2 figures, 1 table, uses svjour.cls
title: Emanuele Papi, L’Etruria dei Romani. Opere pubbliche e donazioni private in età imperiale
Creators: name: Scardigli, Barbara
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Emanuele Papi, L’Etruria dei Romani. Opere pubbliche e donazioni private in età imperiale. Edizioni Quasar, Roma 2000. 278 Seiten.
Caring Trouble and Musical AI: Considerations towards a Feminist Musical AI
Creators: name: Cotton, Kelsey
name: Tatar, Kıvanç
Publisher: name: arXiv
Year: 2023
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The ethics of AI as both material and medium for interaction remains in murky waters within the context of musical and artistic practice. The interdisciplinarity of the field is revealing matters of concern and care, which necessitate interdisciplinary methodologies for evaluation to trouble and critique the inheritance of "residue-laden" AI-tools in musical applications. Seeking to unsettle these murky waters, this paper critically examines the example of Holly+, a deep neural network that generates raw audio in the likeness of its creator Holly Herndon. Drawing from theoretical concerns and considerations from speculative feminism and care ethics, we care-fully trouble the structures, frameworks and assumptions that oscillate within and around Holly+. We contribute with several considerations and contemplate future directions for integrating speculative feminism and care into musical-AI agent and system design, derived from our critical feminist examination.
description: AI and Musical Creativity 2023
Non-Renormalization and Naturalness in a Class of Scalar-Tensor Theories
Creators: name: de Rham, Claudia
name: Gabadadze, Gregory
name: Heisenberg, Lavinia
name: Pirtskhalava, David
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the renormalization of some dimension-4, 7 and 10 operators in a class of nonlinear scalar-tensor theories. These theories are invariant under: (a) linear diffeomorphisms which represent an exact symmetry of the full non-linear action, and (b) global field-space Galilean transformations of the scalar field. The Lagrangian contains a set of non-topological interaction terms of the above-mentioned dimensionality, which we show are not renormalized at any order in perturbation theory. We also discuss the renormalization of other operators, that may be generated by loops and/or receive loop-corrections, and identify the regime in which they are sub-leading with respect to the operators that do not get renormalized. Interestingly, such scalar-tensor theories emerge in a certain high-energy limit of the ghost-free theory of massive gravity. One can use the non-renormalization properties of the high-energy limit to estimate the magnitude of quantum corrections in the full theory. We show that the quantum corrections to the three free parameters of the model, one of them being the graviton mass, are strongly suppressed. In particular, we show that having an arbitrarily small graviton mass is technically natural.
description: 20 pages, 1 figure
title: M. Spannagel, Exemplaria Principis. Untersuchungen zu Entstehung und Ausstattung des Augustusforums
Creators: name: Papini, Massimiliano
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: M. Spannagel, Exemplaria Principis. Untersuchungen zu Entstehung und Ausstattung des Augustusforums. Archäologie und Geschichte Band 9. Verlag Archäologie und Geschichte, Heidelberg 1999. 462 Seiten, 24 Tafeln.
Infinitesimal automorphisms of algebraic varieties and vector fields on elliptic surfaces
Creators: name: Martin, Gebhard
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14J27, 14J50, 14G17

description: We give several results concerning the connected component ${\rm Aut}_X^0$ of the automorphism scheme of a proper variety $X$ over a field, such as its behaviour with respect to birational modifications, normalization, restrictions to closed subschemes and deformations. Then, we apply our results to study the automorphism scheme of not necessarily Jacobian elliptic surfaces $f: X \to C$ over algebraically closed fields, generalizing work of Rudakov and Shafarevich, while giving counterexamples to some of their statements. We bound the dimension $h^0(X,T_X)$ of the space of global vector fields on an elliptic surface $X$ if the generic fiber of $f$ is ordinary or if $f$ admits no multiple fibers, and show that, without these assumptions, the number $h^0(X,T_X)$ can be arbitrarily large for any base curve $C$ and any field of positive characteristic. If $f$ is not isotrivial, we prove that ${\rm Aut}_X^0 \cong μ_{p^n}$ and give a bound on $n$ in terms of the genus of $C$ and the multiplicity of multiple fibers of $f$. As a corollary, we re-prove the non-existence of global vector fields on K3 surfaces and calculate the connected component of the automorphism scheme of a generic supersingular Enriques surface in characteristic $2$. Finally, we present additional results on horizontal and vertical group scheme actions on elliptic surfaces which can be applied to determine ${\rm Aut}_X^0$ explicitly in many concrete cases.
description: 44 pages, Final version
A local test for global extrema in the dispersion relation of a periodic graph
Creators: name: Berkolaiko, Gregory
name: Canzani, Yaiza
name: Cox, Graham
name: Marzuola, Jeremy L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 81Q10, 81Q35, 35Q40

description: We consider a family of periodic tight-binding models (combinatorial graphs) that have the minimal number of links between copies of the fundamental domain. For this family we establish a local condition of second derivative type under which the critical points of the dispersion relation can be recognized as global maxima or minima. Under the additional assumption of time-reversal symmetry, we show that any local extremum of a dispersion band is in fact its global extremum if the dimension of the periodicity group is three or less, or (in any dimension) if the critical point in question is a symmetry point of the Floquet--Bloch family with respect to complex conjugation. We demonstrate that our results are nearly optimal with a number of examples.
description: 30 pages, 7 figures; incorporated corrections from Lior Alon and anonymous referees; expanded explanation of the proof ideas in the introduction
Inexact and Stochastic Generalized Conditional Gradient with Augmented Lagrangian and Proximal Step
Creators: name: Silveti-Falls, Antonio
name: Molinari, Cesare
name: Fadili, Jalal
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: Machine Learning (stat.ML)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: In this paper we propose and analyze inexact and stochastic versions of the CGALP algorithm developed in the authors' previous paper, which we denote ICGALP, that allows for errors in the computation of several important quantities. In particular this allows one to compute some gradients, proximal terms, and/or linear minimization oracles in an inexact fashion that facilitates the practical application of the algorithm to computationally intensive settings, e.g. in high (or possibly infinite) dimensional Hilbert spaces commonly found in machine learning problems. The algorithm is able to solve composite minimization problems involving the sum of three convex proper lower-semicontinuous functions subject to an affine constraint of the form $Ax=b$ for some bounded linear operator $A$. Only one of the functions in the objective is assumed to be differentiable, the other two are assumed to have an accessible prox operator and a linear minimization oracle. As main results, we show convergence of the Lagrangian to an optimum and asymptotic feasibility of the affine constraint as well as weak convergence of the dual variable to a solution of the dual problem, all in an almost sure sense. Almost sure convergence rates, both pointwise and ergodic, are given for the Lagrangian values and the feasibility gap. Numerical experiments verifying the predicted rates of convergence are shown as well.
Supporting Information for "The Conrad Rise Revisited: Eocene to Miocene Volcanism, and its Implications for Magma Sources and Tectonic Development"
Creators: name: Sato, Hiroshi
name: Machida, Shiki
name: Meyzen, Christine M.
name: Ishizuka, Osamu
name: Senda, Ryoko
name: Bizimis, Michael
name: Ashida, Kana
name: Mikuni, Kazuto
name: Sato, Taichi
name: Fujii, Masakazu
name: Nogi, Yoshifumi
name: Kato, Yasuhiro
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 370303
subject: Isotope geochemistry
classificationCode: 370502
subject: Geochronology
classificationCode: 370503
subject: Igneous and metamorphic petrology

description: This supplement provides additional details and results related to our investigation of the samples from the Conrad Rise in the main paper. Figure S1 shows photomicrographs of the analyzed samples. Figure S2 shows chondrite-normalized REE concentrations of volcanic rocks from the Conrad Rise and volcanic islands in the Indian Ocean. Figure S3 shows trace element systematics for volcanic rocks from the Conrad Rise and volcanic islands in the Indian Ocean. Tables S1 to S5 list the location of the dredge sites, lithological summary, results of geochemical and isotope analysis, and 40Ar/39Ar age determination. Tables S1 to S5 are uploaded as separate file.
title: Stefan Schrumpf, Bestattung und Bestattungswesen im Römischen Reich. Ablauf, soziale Dimension und ökonomische Bedeutung der Totenfürsorge im lateinischen Westen
Creators: name: Engels, Johannes
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Stefan Schrumpf, Bestattung und Bestattungswesen im Römischen Reich. Ablauf, soziale Dimension und ökonomische Bedeutung der Totenfürsorge im lateinischen
Westen. Diss. Bonn 2006. Bonn University Press bei Vandenhoek & Ruprecht Unipress, Göttingen 2006. 335 Seiten, 20 Abbildungen.
Anisotropic Zeeman splitting in p-type GaAs quantum point contacts
Creators: name: Komijani, Y.
name: Csontos, M.
name: Shorubalko, I.
name: Zuelicke, U.
name: Ihn, T.
name: Ensslin, K.
name: Reuter, D.
name: Wieck, A. D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Low-temperature electrical conductance spectroscopy measurements of quantum point contacts implemented in p-type GaAs/AlGaAs heterostructures are used to study the Zeeman splitting of 1D subbands for both in-plane and out-of-plane magnetic field orientations. The resulting in-plane g-factors agree qualitatively with those of previous experiments on quantum wires while the quantitative differences can be understood in terms of the enhanced quasi-1D confinement anisotropy. The influence of confinement potential on the anisotropy is discussed and an estimate for the out-of-plane g-factor is obtained which, in contrast to previous experiments, is closer to the theoretical prediction.
Thermodiffusion in binären und ternären Oxiden
Creators: name: Timm, Hauke
Publisher: name: Hannover : Universität
Year: 1999
Subjects: subject: Diffusion
subject: oxides
subject: thermomigration
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Anomalous Internal Pair Creation
Creators: name: Kálmán, Péter
name: Keszthelyi, Tamás
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In recent electron-positron angular correlation measurements the observed significant enhancements relative to the internal pair creation at large angles was interpreted as indication of the creation of $J^{π}=1^{+}$ boson called X17 particle. In this paper it is brought up that such enhancements can be generated by higher order processes. It is found that nuclear transitions, the transition energy of which is significantly lower than the whole transition energy, can cause peaked angle dependence in electron-positron angular correlation.
The Body Electric: A NIME designed through and with the somatic experience of singing
Creators: name: Cotton, Kelsey
name: Sanches, Pedro
name: Tsaknaki, Vasiliki
name: Karpashevich, Pavel
Publisher: name: arXiv
Year: 2023
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: This paper presents the soma design process of creating Body Electric: a novel interface for the capture and use of biofeedback signals and physiological changes generated in the body by breathing, during singing. This NIME design is grounded in the performer's experience of, and relationship to, their body and their voice. We show that NIME design using principles from soma design can offer creative opportunities in developing novel sensing mechanisms, which can in turn inform composition and further elicit curious engagements between performer and artefact, disrupting notions of performer-led control. As contributions, this work 1) offers an example of NIME design for situated living, feeling, performing bodies, and 2) presents the rich potential of soma design as a path for designing in this context.
description: International Conference on New Interfaces for Musical Expression (NIME 2021)
Schur-Finiteness (and Bass-Finiteness) Conjecture for Quadric Fibrations and Families of Sextic du Val del Pezzo Surfaces
Creators: name: Tabuada, Goncalo
Publisher: name: Deutsche Mathematiker-Vereinigung
Year: 2020

description: Let $Q \to B$ be a quadric fibration and $T \to B$ a family of sextic du Val del Pezzo surfaces. Making use of the theory of noncommutative mixed motives, we establish a precise relation between the Schur-finiteness conjecture for $Q$, resp. for $T$, and the Schur-finiteness conjecture for $B$. As an application, we prove the Schur-finiteness conjecture for $Q$, resp. for $T$, when $B$ is low-dimensional. Along the way, we obtain a proof of the Schur-finiteness conjecture for smooth complete intersections of two or three quadric hypersurfaces. Finally, we prove similar results for the Bass-finiteness conjecture.
description: DOCUMENTA MATHEMATICA, Vol 25 (2020), p. 2339-2354