cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Electron Attraction Mediated by Coulomb Repulsion
Creators: name: Hamo, Assaf
name: Benyamini, Avishai
name: Shapir, Ilanit
name: Khivrich, Ilya
name: Waissman, Jonah
name: Kaasbjerg, Kristen
name: Oreg, Yuval
name: von Oppen, Felix
name: Ilani, Shahal
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: One of the defining properties of electrons is their mutual Coulombic repulsion. In solids, however, this basic property may change. A famous example is that of superconductors, where coupling to lattice vibrations make electrons attract each other and leads to the formation of bound pairs. But what if all degrees of freedom are electronic? Is it still possible to make electrons attractive via their repulsion from other electrons? Such a mechanism, termed 'excitonic', was proposed fifty years ago by W. A. Little, aiming to achieve stronger and more exotic superconductivity, yet despite many experimental efforts, direct evidence for such 'excitonic' attraction is still lacking. Here, we demonstrate this unique attraction by constructing, from the bottom up, the fundamental building block of this mechanism. Our experiments are based on quantum devices made from pristine carbon nanotubes, combined with cryogenic precision manipulation. Using this platform we demonstrate that two electrons can be made to attract using an independent electronic system as the binding glue. Owing to its large tunability, our system offers crucial insights into the underlying physics, such as the dependence of the emergent attraction on the underlying repulsion and the origin of the pairing energy. We also demonstrate transport signatures of 'excitonic' pairing. This experimental demonstration of 'excitonic' pairing paves the way for the design of exotic states of matter.
description: News and views: Nature 535, 362-363 (21 July 2016) doi:10.1038/535362a
Decoding semantic concepts from neuronal population activity in the human medial temporal lobe in response to dynamic visual stimulation
Creators: name: Gerken, Franziska
name: Darcher, Alana
name: Gonçalves, Pedro J.
name: Rapp, Rachel
name: Elezi, Ismail
name: Niediek, Johannes
name: Liebe, Stefanie
name: Macke, Jakob H.
name: Mormann, Florian
name: Leal-Taixé, Laura
Publisher: name: G-Node
Year: 2023
Subjects: Computational Neuroscience
Data analysis, machine learning and neuroinformatics

description: Bernstein Conference 2023 abstract. https://bernstein-conference.de
Spherical-shell boundaries for two-dimensional compressible convection in a star
Creators: name: Pratt, J.
name: Baraffe, I.
name: Goffrey, T.
name: Geroux, C.
name: Viallet, M.
name: Folini, D.
name: Constantino, T.
name: Popov, M.
name: Walder, R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Context: We study the impact of two-dimensional spherical shells on compressible convection. Realistic profiles for density and temperature from a one-dimensional stellar evolution code are used to produce a model of a large stellar convection zone representative of a young low-mass star. Methods: We perform hydrodynamic implicit large-eddy simulations of compressible convection using the MUltidimensional Stellar Implicit Code (MUSIC). Because MUSIC has been designed to use realistic stellar models produced from one-dimensional stellar evolution calculations, MUSIC simulations are capable of seamlessly modeling a whole star. Simulations in two-dimensional spherical shells that have different radial extents are performed over hundreds of convective turnover times, permitting the collection of well-converged statistics. Results: We evaluate basic statistics of the convective turnover time, the convective velocity, and the overshooting layer. These quantities are selected for their relevance to one-dimensional stellar evolution calculations, so that our results are focused toward the 321D link. The inclusion in the spherical shell of the boundary between the radiative and convection zones decreases the amplitude of convective velocities in the convection zone. The inclusion of near-surface layers in the spherical shell can increase the amplitude of convective velocities, although the radial structure of the velocity profile established by deep convection is unchanged. The impact from including the near-surface layers depends on the speed and structure of small-scale convection in the near-surface layers. Larger convective velocities in the convection zone result in a commensurate increase in the overshooting layer width and decrease in the convective turnover time. These results provide support for non-local aspects of convection.
description: 14 pages, 9 figures, abbreviated abstract, accepted for publication in Astronomy & Astrophysics, reproduced with permission, c ESO
The future search for low-frequency axions and new physics with the FLASH resonant cavity experiment at Frascati National Laboratories
Creators: name: Alesini, David
name: Babusci, Danilo
name: Beltrame, Paolo
name: Bossi, Fabio
name: Ciambrone, Paolo
name: D'Elia, Alessandro
name: Di Gioacchino, Daniele
name: Di Pirro, Giampiero
name: Döbrich, Babette
name: Falferi, Paolo
name: Gatti, Claudio
name: Giannotti, Maurizio
name: Gianotti, Paola
name: Lamanna, Gianluca
name: Ligi, Carlo
name: Maccarrone, Giovanni
name: Mazzitelli, Giovanni
name: Mirizzi, Alessandro
name: Mueck, Michael
name: Nardi, Enrico
name: Nguyen, Federico
name: Rettaroli, Alessio
name: Rezvani, Javad
name: Teofilo, Francesco Enrico
name: Tocci, Simone
name: Tomassini, Sandro
name: Visinelli, Luca
name: Zantedeschi, Michael
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a proposal for a new experiment, the FINUDA magnet for Light Axion SearcH (FLASH), a large resonant-cavity haloscope in a high static magnetic field which is planned to probe new physics in the form of dark matter (DM) axions, scalar fields, chameleons, hidden photons, as well as high frequency gravitational waves (GWs). Concerning the QCD axion, FLASH will search for these particles as the DM in the mass range (0.49-1.49) ueV, thus filling the mass gap between the ranges covered by other planned searches. A dedicated Microstrip SQUID operating at ultra-cryogenic temperatures will amplify the signal. The frequency range accessible overlaps with the Very High Frequency (VHF) range of the radio wave spectrum and allows for a search in GWs in the frequency range (100-300) MHz. The experiment will make use of the cryogenic plant and magnet of the FINUDA experiment at INFN Frascati National Laboratories near Rome (Italy); the operations needed to restore the functionalities of the apparatus are currently underway. We present the setup of the experiment and the sensitivity forecasts for the detection of axions, scalar fields, chameleons, hidden photons, and GWs.
Sonnenfleckenzeichnung Nr. 26010.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 24.09.1980, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1980

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g)
Sonnenfleckenzeichnung Nr. 25953.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 19.07.1980, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1980

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g)
Annual Report of the Provincial Industrial School for Boys of the Province of British Columbia, Volume 19
Creators: name: British Columbia. Provincial Industrial School For Boys.
Publisher: name: University of Victoria Libraries
Year: 2021
Subjects: subject: School management and organization
valueUri: http://id.worldcat.org/fast/1107575
subject: Education
valueUri: http://id.worldcat.org/fast/902499
subject: Reformatories
valueUri: http://id.worldcat.org/fast/1092581
subject: Schools
valueUri: http://id.worldcat.org/fast/1107958

description: Report to the provincial government from the Provincial Industrial School for Boys. Includes information about the students and the school's activities.
Experimental demonstration of robust entanglement distribution over reciprocal noisy channels assisted by a counter-propagating classical reference light
Creators: name: Ikuta, Rikizo
name: Nozaki, Shota
name: Yamamoto, Takashi
name: Koashi, Masato
name: Imoto, Nobuyuki
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We experimentally demonstrate a proposal [Phys. Rev. A 87, 052325 (2013)] of a scheme for robust distribution of polarization entangled photon pairs over collective noisy channels having the reciprocity. Although the scheme employs the robustness of two qubit decoherence-free subspace, by utilizing the forward propagation of one half of the entangled photons and the backward propagation of a classical reference light, it achieves an entanglement-sharing rate proportional to the transmittance of the quantum channel for the signal photon. We experimentally observed the efficient sharing rate while keeping a highly entangled state after the transmission. We also show that the protection method is applicable to transmission of arbitrary polarization state of a single photon.
description: 5 pages, 6 figures
Towards Reliable Spike Sorting: Interpretable Automated Curation for Spike Sorting Outputs
Creators: name: Greene, Robyn
name: Hennig, Matthias
Publisher: name: G-Node
Year: 2023
Subjects: Computational Neuroscience
Data analysis, machine learning and neuroinformatics

description: Bernstein Conference 2023 abstract. https://bernstein-conference.de
Invitation to Random Tensors
Creators: name: Gurau, Razvan
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: This article is preface to the SIGMA special issue "Tensor Models, Formalism and Applications", http://www.emis.de/journals/SIGMA/Tensor_Models.html. The issue is a collection of eight excellent, up to date reviews on random tensor models. The reviews combine pedagogical introductions meant for a general audience with presentations of the most recent developments in the field. This preface aims to give a condensed panoramic overview of random tensors as the natural generalization of random matrices to higher dimensions.
Investigation of the Interplay of Model-Based and Model-Free Learning Using Reinforcement Learning
Creators: name: Grün, Felix
name: Saif-Ur-Rehman, Muhammad
name: Iossifidis, Ioannis
Publisher: name: G-Node
Year: 2023
Subjects: Computational Neuroscience
Data analysis, machine learning and neuroinformatics

description: Bernstein Conference 2023 abstract. https://bernstein-conference.de
Sampling algorithms for validation of supervised learning models for Ising-like systems
Creators: name: Portman, Nataliya
name: Tamblyn, Isaac
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this paper, we build and explore supervised learning models of ferromagnetic system behavior, using Monte-Carlo sampling of the spin configuration space generated by the 2D Ising model. Given the enormous size of the space of all possible Ising model realizations, the question arises as to how to choose a reasonable number of samples that will form physically meaningful and non-intersecting training and testing datasets. Here, we propose a sampling technique called ID-MH that uses the Metropolis-Hastings algorithm creating Markov process across energy levels within the predefined configuration subspace. We show that application of this method retains phase transitions in both training and testing datasets and serves the purpose of validation of a machine learning algorithm. For larger lattice dimensions, ID-MH is not feasible as it requires knowledge of the complete configuration space. As such, we develop a new "block-ID" sampling strategy: it decomposes the given structure into square blocks with lattice dimension no greater than 5 and uses ID-MH sampling of candidate blocks. Further comparison of the performance of commonly used machine learning methods such as random forests, decision trees, k nearest neighbors and artificial neural networks shows that the PCA-based Decision Tree regressor is the most accurate predictor of magnetizations of the Ising model. For energies, however, the accuracy of prediction is not satisfactory, highlighting the need to consider more algorithmically complex methods (e.g., deep learning).
description: 43 pages and 16 figures
Annual Report of the Provinical Industrial School for Boys of the Province of British Columbia, Volume 23
Creators: name: British Columbia. Provincial Industrial School For Boys.
Publisher: name: University of Victoria Libraries
Year: 2021
Subjects: subject: School management and organization
valueUri: http://id.worldcat.org/fast/1107575
subject: Education
valueUri: http://id.worldcat.org/fast/902499
subject: Reformatories
valueUri: http://id.worldcat.org/fast/1092581
subject: Schools
valueUri: http://id.worldcat.org/fast/1107958

description: Report to the provincial government from the Provincial Industrial School for Boys. Includes information about the students and the school's activities.
Purposeful Co-Design of OFDM Signals for Ranging and Communications
Creators: name: Graff, Andrew
name: Humphreys, Todd E.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper analyzes the fundamental trade-offs that occur in the co-design of pilot resource allocations in orthogonal frequency-division multiplexing signals for both ranging (via time-of-arrival estimation) and communications. These trade-offs are quantified through the Shannon capacity bound, probability of outage, and the Ziv-Zakai bound on range estimation variance. Bounds are derived for signals experiencing frequency-selective Rayleigh block fading, accounting for the impact of limited channel knowledge and multi-antenna reception. Uncompensated carrier frequency offset and phase errors are also factored into the capacity bounds. Analysis based on the derived bounds demonstrates how Pareto-optimal design choices can be made to optimize the communication throughput, probability of outage, and ranging variance. Different pilot resource allocation strategies are then analyzed, showing how Pareto-optimal design choices change depending on the channel.
Testing the Braneworld Theory with Identical Particles
Creators: name: Stojiljković, Ivana
name: Đorđević, Dušan
name: Gočanin, Aleksandra
name: Gočanin, Dragoljub
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Various attempts to go beyond the theory of General Relativity start from the assumption that spacetime is not a 4-dimensional but rather a higher-dimensional manifold. Among others, braneworld scenarios postulate that the spacetime we effectively observe is actually a 4-dimensional brane embedded in a higher-dimensional spacetime. In general, braneworld models predict a departure from the Newton gravity law in the nonrelativistic regime. Based on this fact, we propose an experimental test that uses a pair of gravitationally interacting identical particles to determine the validity of certain braneworld models and provide numerical results that should be compared with experimental data. In particular, we consider the Randal-Sundrum braneworld model and study two cases of 5-dimensional gravity theories: the Einstein-Hilbert gravity with the negative cosmological constant and the Einstein-Gauss-Bonnet (nearly-Chern-Simons) gravity.
description: 6 pages, 6 figures, comments are welcome
Hyperinvariant, characteristic and marked subspaces
Creators: name: Astuti, Pudji
name: Wimmer, Harald K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 15A18, 47A15, 15A57, 13C99

description: Let $V$ be a finite dimensional vector space over a field $K$ and $f$ a $K$-endomorphism of $V$. In this paper we study three types of $f$-invariant subspaces, namely hyperinvariant subspaces, which are invariant under all endomorphisms of $V$ that commute with $f$, characteristic subspaces, which remain fixed under all automorphisms of $V$ that commute with $f$, and marked subspaces, which have a Jordan basis (with respect to $f_{|X}$) that can be extended to a Jordan basis of $V$. We show that a subspace is hyperinvariant if and only if it is characteristic and marked. If $K$ has more than two elements then each characteristic subspace is hyperinvariant.
description: 13 pages
Grassmann Duality and the Particle Spectrum
Creators: name: Delbourgo, Robert
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Schemes based on anticommuting scalar coordinates, corresponding to properties, lead to generations of particles naturally. The application of Grassmannian duality cuts down the number of states substantially and is vital for constructing sensible Lagrangians anyhow. We apply duality to all of the subgroups within the {\em classification} group SU(3)$\times$SU(2)$_L\times$SU(2)$_R$, which encompasses the standard model gauge group, and thereby determine the full state inventory; this includes the definite prediction of quarks with charge -4/3 and other exotic states. Assuming universal gravitational coupling to the gauge fields and parity even property curvature, we also obtain $4\sin^2θ_w = 1 - 2α/3α_s$ which is not far from the experimental value around the $M_Z$ mass.
description: Now published. 18 pages
Sonnenfleckenzeichnung Nr. 26027.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 16.10.1980, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1980

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g)
Parallel pumping for magnon spintronics: Amplification and manipulation of magnon spin currents on the micron-scale
Creators: name: Brächer, Thomas
name: Pirro, Philipp
name: Hillebrands, Burkard
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Magnonics and magnon spintronics aim at the utilization of spin waves and magnons, their quanta, for the construction of wave-based logic networks via the generation of pure all-magnon spin currents and their interfacing with electrical charge transport. The promise of efficient parallel data processing and low power consumption renders this field one of the most promising research areas in spintronics. In this context, the process of parallel parametric amplification, i.e., the conversion of microwave photons into magnons at one half of the microwave frequency, has proven to be a versatile tool. Its beneficial and unique properties, such as frequency and mode-selectivity, the possibility to excite spin waves in a wide wavevector range and the creation of phase-correlated wave pairs, render it one of the key methods of spin-wave generation and amplification. The application of parallel parametric amplification to micro- and nanostructures is an important step towards the realization of magnonic networks. This is motivated not only by the fact that amplifiers are an important tool for the construction of any extended logic network but also by the unique properties of parallel parametric amplification, such as a phase-dependent amplification. Recently, the successful application of parallel parametric amplification to metallic microstructures has been reported. It has been demonstrated that parametric amplification provides an excellent tool to generate and to amplify spin waves in these systems. In particular, the amplification greatly benefits from the discreteness of the spin-wave spectra. This opens up new, interesting routes of spin-wave amplification and manipulation. In this Review, we give an overview over the recent developments and achievements in this field.
An implicit generative model of neuronal morphologies
Creators: name: Hansel, Laura
name: Weis, Marissa A.
name: Lüddecke, Timo
name: Ecker, Alexander S.
Publisher: name: G-Node
Year: 2023
Subjects: Computational Neuroscience
Data analysis, machine learning and neuroinformatics

description: Bernstein Conference 2023 abstract. https://bernstein-conference.de
Sonnenfleckenzeichnung Nr. 26035.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 28.10.1980, erstellt von Antoine Zelenka
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1980

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g)
Sonnenfleckenzeichnung Nr. 289.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 09.12.1981, 09:45, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1981

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 2.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
CWENO: uniformly accurate reconstructions for balance laws
Creators: name: Cravero, I.
name: Puppo, G.
name: Semplice, M.
name: Visconti, G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65M08, 65M12

description: In this paper we introduce a general framework for defining and studying essentially non-oscillatory reconstruction procedures of arbitrarily high order accuracy, interpolating data in a central stencil around a given computational cell ($\CWENO$). This technique relies on the same selection mechanism of smooth stencils adopted in $\WENO$, but here the pool of candidates for the selection includes polynomials of different degrees. This seemingly minor difference allows to compute an analytic expression of a polynomial interpolant, approximating the unknown function uniformly within a cell, instead of only at one point at a time. For this reason this technique is particularly suited for balance laws for finite volume schemes, when averages of source terms require high order quadrature rules based on several points; in the computation of local averages, during refinement in h-adaptive schemes; or in the transfer of the solution between grids in moving mesh techniques, and in general when a globally defined reconstruction is needed. Previously, these needs have been satisfied mostly by ENO reconstruction techniques, which, however, require a much wider stencil then the $\CWENO$ reconstruction studied here, for the same accuracy.
The mouse prefrontal cortex: All the same mush or functional sub-regions?
Creators: name: Heining, Katharina
name: Le Merre, Pierre
name: Carlén, Marie
Publisher: name: G-Node
Year: 2023
Subjects: Computational Neuroscience
Data analysis, machine learning and neuroinformatics

description: Bernstein Conference 2023 abstract. https://bernstein-conference.de
Circuit Breaking: Removing Model Behaviors with Targeted Ablation
Creators: name: Li, Maximilian
name: Davies, Xander
name: Nadeau, Max
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Language models often exhibit behaviors that improve performance on a pre-training objective but harm performance on downstream tasks. We propose a novel approach to removing undesirable behaviors by ablating a small number of causal pathways between model components, with the intention of disabling the computational circuit responsible for the bad behavior. Given a small dataset of inputs where the model behaves poorly, we learn to ablate a small number of important causal pathways. In the setting of reducing GPT-2 toxic language generation, we find ablating just 12 of the 11.6K causal edges mitigates toxic generation with minimal degradation of performance on other inputs.
Sonnenfleckenzeichnung Nr. 285.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 04.12.1981, 09:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1981

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 2.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Modeling Aging Trajectories of 3D Structural Brain MRIs Using Two-Stage Generative Models
Creators: name: Kapoor, Jaivardhan
name: Macke, Jakob H.
name: Baumgartner, Christian F.
Publisher: name: G-Node
Year: 2023
Subjects: Computational Neuroscience
Data analysis, machine learning and neuroinformatics

description: Bernstein Conference 2023 abstract. https://bernstein-conference.de
Gender-specific trajectories of EEG resting-state power and robust functional connectivity in child development
Creators: name: Agarwal, Nikita
name: Popov, Tzvetan
name: Tröndle, Marius
name: Langer, Nicolas
name: Haufe, Stefan
Publisher: name: G-Node
Year: 2023
Subjects: Computational Neuroscience

description: Bernstein Conference 2023 abstract. https://bernstein-conference.de
Dynamics of Superconformal Axion: Quality and Scalegenesis
Creators: name: Nakagawa, Shota
name: Nakai, Yuichiro
name: Yamada, Masaki
name: Zhang, Yufei
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We explore a dynamical mechanism to realize the emergence of a global $U(1)_{\rm PQ}$ symmetry and its spontaneous breaking at an intermediate scale for an axion solution to the strong CP problem. Such a dynamics is provided by a new supersymmetric QCD near the middle of conformal window that couples to fields spontaneously breaking the $U(1)_{\rm PQ}$ symmetry. A large anomalous dimension of the $U(1)_{\rm PQ}$ breaking fields leads to the suppression of explicit $U(1)_{\rm PQ}$-violating higher dimensional operators. The $U(1)_{\rm PQ}$ breaking vacuum is generated at a scale hierarchically smaller than the Planck scale by a non-perturbative effect. The $U(1)_{\rm PQ}$ breaking drives the conformal breaking, and all the new quarks become massive. The axion potential is generated by the ordinary color $SU(3)_C$ effect as the $U(1)_{\rm PQ}$ symmetry is only anomalous under the $SU(3)_C$. The saxion direction is stabilized by supersymmetry breaking and cosmologically harmless.
description: 8 pages, 3 figures
Multiwavelength and parsec-scale properties of extragalactic jets
Creators: name: Müller, Cornelia
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Extragalactic jets originating from the central supermassive black holes of active galaxies are powerful, highly relativistic plasma outflows, emitting light from the radio up to the gamma-ray regime. The details of their formation, composition and emission mechanisms are still not completely clear. The combination of high-resolution observations using very long baseline interferometry (VLBI) and multiwavelength monitoring provides the best insight into these objects. Here, such a combined study of sources of the TANAMI sample is presented, investigating the parsec-scale and high-energy properties. The TANAMI program is a multiwavelength monitoring program of a sample of the radio and gamma-ray brightest extragalactic jets in the southern sky, below -30deg declination. We obtain the first-ever VLBI images for most of the sources, providing crucial information on the jet kinematics and brightness distribution at milliarcsecond resolution. Two particular sources are discussed in detail: PMN J1603-4904, which can be classified either as an atypical blazar or a gamma-ray loud (young) radio galaxy, and Centaurus A, the nearest radio-loud active galaxy. The VLBI kinematics of the innermost parsec of Centaurus A's jet result in a consistent picture of an accelerated jet flow with a spine-sheath like structure.
description: Doctoral Thesis Award Lecture 2015, AN 2016, 337, 7
Sonnenfleckenzeichnung Nr. 232.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 29.09.1981, 08:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1981

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf dem Vordruck der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 2.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Inversion of ferrimagnetic magnetization by ferroelectric switching via a novel magnetoelectric coupling
Creators: name: Weng, Yakui
name: Lin, Lingfang
name: Dagotto, Elbio
name: Dong, Shuai
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Although several multiferroic materials/heterostructures have been extensively studied, finding strong magnetoelectric couplings for the electric field control of the magnetization remains challenging. Here, a novel interfacial magnetoelectric coupling based on three components (ferroelectric dipole, magnetic moment, and antiferromagnetic order) is analytically formulated. As an extension of carrier-mediated magnetoelectricity, the new coupling is shown to induce an electric-magnetic hysteresis loop. Realizations employing BiFeO$_3$ bilayers grown along the [$111$] axis are proposed. Without involving magnetic phase transitions, the magnetization orientation can be switched by the carrier modulation driven by the field effect, as confirmed using first-principles calculations.
description: 10 pages, 8 figures
Two Worlds Monthly, for the increase of the gaiety of nations, Vol. 03, No. 02 (May-June, 1927)
Creators: name: :Unav
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: subject: English literature
valueUri: http://id.worldcat.org/fast/911989
subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172
subject: Controversial literature
valueUri: http://id.worldcat.org/fast/1423907
subject: Ulysses (Joyce, James)
valueUri: http://id.worldcat.org/fast/1356277
subject: Modernism (Literature)
valueUri: http://id.worldcat.org/fast/1024455
subject: Literature
valueUri: http://id.worldcat.org/fast/999953

description: Edited by Samuel Roth, a New-York based publisher of literature and erotica, who pirated some of Joyce’s works and was responsible for publication of the first complete, albeit corrupt, text of Ulysses in the United states. After the struggle in getting Ulysses initially published, which resulted in Sylvia Beach's printing in Paris, problems were still not resolved in America. The ban on the book prompted the publication in Samuel Roth's Two World's monthly "an expurgated version of Joyce's Ulysses without the author's permission and without paying for reproduction rights." (The New York Times). In response, 167 authors, including Virginia Woolf, D.H. Lawrence, Somerset Maugham, and T.S. Eliot, signed a letter of protest in defense of the author. Publishers, seeing how many important people were defending the book, and taking into account its popularity in Two Worlds Monthly began to solicit Joyce for publication of Ulysses in America. After a prolonged battle with Sylvia Beach, who at the time held the rights to publication, Joyce made a deal with Random House. Its appearance in America then sparked the famous court case United States vs. One Book Called Ulysses, where Judge John M. Woolsey decided that "whilst in many places the effect of Ulysses of the reader undoubtedly is somewhat emetic, nowhere does it tend to be an aphrodisiac. Ulysses may, therefore, be admitted into the United States." --Manhattan Rare Books Company. Dedicated to T.S. Eliot, with paragraphs scattered throughout by Henry D. Thoreau. Contains the tenth installment of Ulysses by James Joyce.
Sonnenfleckenzeichnung Nr. 26065.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 19.12.1980, erstellt von Hans Ulrich Keller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1980

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g)
Model-based Optimization of Temporal Interference Stimulation
Creators: name: Ahmadi, Keivan
name: Himmel, Andreas
name: Thiele, Carsten
name: Akter, Fahmida
name: Budinger, Eike
name: Ruhnau, Philipp
name: Findeisen, Rolf
Publisher: name: G-Node
Year: 2023
Subjects: Computational Neuroscience

description: Bernstein Conference 2023 abstract. https://bernstein-conference.de
Lived experiences in community arts in Ireland: an autoethnographic and ethnographic, practice-based study
Creators: name: GARRY, FRANCES
Publisher: name: University of Limerick
Year: 2023
Subjects: Music

description: This practice-based study is a qualitative exploration of individual and collective arts experiences in Ireland through the lens of my arts practice as a performing artist and community music educator. This investigation fills an important research gap by uncovering knowledge of first-hand experiences in participatory arts in the amateur and voluntary arts sector in Ireland. It is widely recognised that generalisations about the benefits of the arts in public policy funding contexts have yet to be substantiated with accounts of first-hand experience of arts engagement. In addition, there is a paucity of research in the amateur and voluntary arts sector. My specific research focus, throughout this thesis, is on my personal musical life journey, intertwined with the stories of school and community groups with whom I interact in my community music and performance practice. This study focuses primarily on extra-curricular musical theatre and community musical theatre projects, alongside additional singing and creative writing projects. Research participants include secondary school students and teachers, and members of community groups. I engage with a mixed methodological research approach, incorporating autoethnography, ethnography and narrative inquiry. Outputs in the practice strand of the PhD include design and analysis of two performances as evidence of the research inquiry. ‘Connected, a musical ethnodrama’ is a collaborative writing and performance project with secondary school students.‘The Long Road Home’ is a musical autoethnography. The songs and stories in this performance work represent my musical life journey combined with resonant arts experiences, memories and reflections of research participants. Emergent themes reveal that arts participation creates a space for building strong friendships and connections; musical activity is hugely supported by voluntary work; overcoming inherent challenges builds resilience; and audience reaction and appreciation is highly valued by performers, and contributes to a sense of pride and achievement.
Augmenting Tactile Simulators with Real-like and Zero-Shot Capabilities
Creators: name: Azulay, Osher
name: Mizrahi, Alon
name: Curtis, Nimrod
name: Sintov, Avishai
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Simulating tactile perception could potentially leverage the learning capabilities of robotic systems in manipulation tasks. However, the reality gap of simulators for high-resolution tactile sensors remains large. Models trained on simulated data often fail in zero-shot inference and require fine-tuning with real data. In addition, work on high-resolution sensors commonly focus on ones with flat surfaces while 3D round sensors are essential for dexterous manipulation. In this paper, we propose a bi-directional Generative Adversarial Network (GAN) termed SightGAN. SightGAN relies on the early CycleGAN while including two additional loss components aimed to accurately reconstruct background and contact patterns including small contact traces. The proposed SightGAN learns real-to-sim and sim-to-real processes over difference images. It is shown to generate real-like synthetic images while maintaining accurate contact positioning. The generated images can be used to train zero-shot models for newly fabricated sensors. Consequently, the resulted sim-to-real generator could be built on top of the tactile simulator to provide a real-world framework. Potentially, the framework can be used to train, for instance, reinforcement learning policies of manipulation tasks. The proposed model is verified in extensive experiments with test data collected from real sensors and also shown to maintain embedded force information within the tactile images.
Vladimir Naumovich Gribov: Pieces of biography
Creators: name: Azimov, Ya. I.
Publisher: name: arXiv
Year: 2016
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The talk presents the main lines of biography of the prominent physicist and bright personality. Also given is a necessarily brief description of Gribov's scientific work.
description: Based on the invited talk at the 4th V.N. Gribov Memorial Workshop "Theoretical Physics of XXI Century" (Gribov-85), 17-20 June, 2015, Chernogolovka, Russia. To appear in the Proceedings
Connectome-constrained deep mechanistic networks predict neural responses across the fly visual system at single-neuron resolution
Creators: name: Lappalainen, Janne K.
name: Tschopp, Fabian D.
name: Prakhya, Sridhama
name: McGill, Mason
name: Nern, Aljoscha
name: Shinomiya, Kazunori
name: Takemura, Shin-Ya
name: Gruntman, Eyal
name: Macke, Jakob H.
name: Turaga, Srinivas C.
Publisher: name: G-Node
Year: 2023
Subjects: Computational Neuroscience

description: Bernstein Conference 2023 abstract. https://bernstein-conference.de
Yb fiber amplifier at 972.5 nm with frequency quadrupling to 243.1 nm
Creators: name: Burkley, Z.
name: Rasor, C.
name: Cooper, S. F.
name: Brandt, A. D.
name: Yost, D. C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We demonstrate a continuous-wave ytterbium-doped fiber amplifier which produces 6.3 W at a wavelength of 972.5 nm. We frequency quadruple this source in two resonant doubling stages to produce 530 mW at 243.1 nm. Radiation at this wavelength is required to excite the 1S-2S transition in atomic hydrogen and could therefore find application in experimental studies of hydrogen and anti-hydrogen.
Frugal Neuron: A Comprehensive Study of Protein Uptake Dynamics under ATP Constraints in Neuronal Synapses
Creators: name: Liu, Yuhong
name: Tchumatchenko, Tatjana
Publisher: name: G-Node
Year: 2023
Subjects: Computational Neuroscience

description: Bernstein Conference 2023 abstract. https://bernstein-conference.de
Sonnenfleckenzeichnung Nr. 26000.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 14.09.1980, erstellt von Antoine Zelenka
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1980

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f sowie Gr (Anzahl g)
Mitigating the Impact of Artifacts in Massively Parallel Neural Recordings
Creators: name: Oberste-Frielinghaus, Jonas
name: Morales Gregorio, Aitor
name: Essink, Simon
name: Kleinjohann, Alexander
name: Ito, Junji
name: Grün, Sonja
Publisher: name: G-Node
Year: 2023
Subjects: Computational Neuroscience

description: Bernstein Conference 2023 abstract. https://bernstein-conference.de
How understanding large language models can inform the use of ChatGPT in physics education
Creators: name: Polverini, Giulia
name: Gregorcic, Bor
Publisher: name: arXiv
Year: 2023
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: The paper aims to fulfil three main functions: (1) to serve as an introduction for the physics education community to the functioning of Large Language Models (LLMs), (2) to present a series of illustrative examples demonstrating how prompt-engineering techniques can impact LLMs performance on conceptual physics tasks and (3) to discuss potential implications of the understanding of LLMs and prompt engineering for physics teaching and learning. We first summarise existing research on the performance of a popular LLM-based chatbot (ChatGPT) on physics tasks. We then give a basic account of how LLMs work, illustrate essential features of their functioning, and discuss their strengths and limitations. Equipped with this knowledge, we discuss some challenges with generating useful output with ChatGPT-4 in the context of introductory physics, paying special attention to conceptual questions and problems. We then provide a condensed overview of relevant literature on prompt engineering and demonstrate through illustrative examples how selected prompt-engineering techniques can be employed to improve ChatGPT-4's output on conceptual introductory physics problems. Qualitatively studying these examples provides additional insights into ChatGPT's functioning and its utility in physics problem solving. Finally, we consider how insights from the paper can inform the use of LLMs in the teaching and learning of physics.
Absence of many-body localization in a continuum
Creators: name: Gornyi, I. V.
name: Mirlin, A. D.
name: Müller, M.
name: Polyakov, D. G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that many-body localization, which exists in tight-binding models, is unstable in a continuum. Irrespective of the dimensionality of the system, many-body localization does not survive the unbounded growth of the single-particle localization length with increasing energy that is characteristic of the continuum limit. The system remains delocalized down to arbitrarily small temperature $T$, although its dynamics slows down as $T$ decreases. Remarkably, the conductivity vanishes with decreasing $T$ faster than in the Arrhenius law. The system can be characterized by an effective $T$-dependent single-particle mobility edge which diverges in the limit of $T\to 0$. Delocalization is driven by interactions between hot electrons above the mobility edge and the "bath" of thermal electrons in the vicinity of the Fermi level.