cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Well-posedness and Long-time Behavior of a Bulk-surface Coupled Cahn-Hilliard-diffusion System with Singular Potential for Lipid Raft Formation
Creators: name: Wu, Hao
name: Xu, Shengqin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35A01, 35A02, 35K35, 35Q92

description: We study a bulk-surface coupled system that describes the processes of lipid-phase separation and lipid-cholesterol interaction on cell membranes, in which cholesterol exchange between cytosol and cell membrane is also incorporated. The PDE system consists of a surface Cahn-Hilliard equation for the relative concentration of saturated/unsaturated lipids and a surface diffusion-reaction equation for the cholesterol concentration on the membrane, together with a diffusion equation for the cytosolic cholesterol concentration in the bulk. The detailed coupling between bulk and surface evolutions is characterized by a mass exchange term $q$. For the system with a physically relevant singular potential, we first prove the existence, uniqueness and regularity of global weak solutions to the full bulk-surface coupled system under suitable assumptions on the initial data and the mass exchange term $q$. Next, we investigate the large cytosolic diffusion limit that gives a reduction of the full bulk-surface coupled system to a system of surface equations with non-local contributions. Afterwards, we study the long-time behavior of global solutions in two categories, i.e., the equilibrium and non-equilibrium models according to different choices of the mass exchange term $q$. For the full bulk-surface coupled system with a decreasing total free energy, we prove that every global weak solution converges to a single equilibrium as $t\to +\infty$. For the reduced surface system with a mass exchange term of reaction type, we establish the existence of a global attractor.
Spin contribution to the dissociation of bound states in rotating medium in magnetic field
Creators: name: Tuchin, Kirill
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Magneto-rotational dissociation is the decay, by the way of tunneling, of a rotating bound state in the magnetic field. The corresponding probability was recently computed in the quasi-classical approximation using the Imaginary Time Method and was shown to increase with the angular velocity and decrease with the magnetic field strength \cite{Tuchin:2021lxl}. This letter reports the calculation of the quantum correction to the dissociation probability associated with the spin of the tunneling particle. The quasi-classical motion of spin is described by the Bargmann--Michel--Telegdi equation in the rotating frame. It is shown that the spin contribution significantly increases the dissociation probability. Applications to the Quark-Gluon Plasma are touched upon.
description: 11 pages, 12 figures, v3: typos corrected, comments added. arXiv admin note: text overlap with arXiv:2102.10659
Edmund Kizik, Die reglementierte Feier. Hochzeiten, Taufen und Begräbnisse in der frühneuzeitlichen Hansestadt
Creators: name: Faber, Martin
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2011

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 60 Nr. 3 (2011)
Two photons into π^0π^0
Creators: name: Oller, J. A.
name: Roca, L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We perform a theoretical study based on dispersion relations of the reaction γγ\to π^0π^0 emphasizing the low energy region. We discuss how the f_0(980) signal emerges in γγ\to ππwithin the dispersive approach and how this fixes to a large extent the phase of the isoscalar S-wave γγ\to ππamplitude above the K\bar{K} threshold. This allows us to make sharper predictions for the cross section at lower energies and our results could then be used to distinguish between different ππisoscalar S-wave parameterizations with the advent of new precise data on γγ\toπ^0π^0. We compare our dispersive approach with an updated calculation employing Unitary Chiral Perturbation Theory (U\chiPT). We also pay special attention to the role played by the σresonance in γγ\toππand calculate its coupling and width to gammaγ, for which we obtain Γ(σ\toγγ)=(1.68\pm 0.15) KeV.
description: 31 pages, 9 figures
Additional file 1 of Spatial epidemiology of Tabanus (Diptera: Tabanidae) vectors of Trypanosoma
Creators: name: Marques, Roberta
name: Jiménez-García, Daniel
name: Escobar, Luis E.
name: Krolow, Tiago Kütter
name: Krüger, Rodrigo Ferreira
Publisher: name: figshare
Year: 2025
Subjects: subject: Medicine
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: Supplementary Material 1. List of the references used to collect occurrence data of the six Tabanus species in the Neotropical region.
Computational Steering of Cluster Formation in Brownian Suspensions
Creators: name: Hecht, Martin
name: Harting, Jens
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We simulate cluster formation of model colloidal particles interacting via DLVO (Derjaguin, Landau, Vervey, Overbeek) potentials. The interaction potentials can be related to experimental conditions, defined by the pH-value, the salt concentration and the volume fraction of solid particles suspended in water. The system shows different structural properties for different conditions, including cluster formation, a glass-like repulsive structure, or a liquid suspension. Since many simulations are needed to explore the whole parameter space, when investigating the properties of the suspension depending on the experimental conditions, we have developed a steering approach to control a running simulation and to detect interesting transitions from one region in the configuration space to another. The advantages of the steering approach and the restrictions of its applicability due to physical constraints are illustrated by several example cases.
description: 9 pages, 4 figures, submitted to Proceedings of the Fourth International Conference on Mesoscopic Methods in Engineering and Science (ICMMES) 2007 (Munich, Germany), revised version, 2 figures exchanged, some parts rephrased
Black Hole Mass Function of Coalescing Binary Black Hole Systems: Is There a Pulsational Pair Instability Mass Cutoff?
Creators: name: Wang, Yuan-Zhu
name: Tang, Shao-Peng
name: Liang, Yun-Feng
name: Han, Ming-Zhe
name: Li, Xiang
name: Jin, Zhi-Ping
name: Fan, Yi-Zhong
name: Wei, Da-Ming
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We analyze the LIGO/Virgo GWTC-2 catalog to study the primary mass distribution of the merging black holes. We perform hierarchical Bayesian analysis, and examine whether the mass distribution has a sharp cutoff for primary black hole masses below $65 M_\odot$, as predicted in pulsational pair instability supernova model. We construct two empirical mass functions. One is a piece-wise function with two power-law segments jointed by a sudden drop. The other consists of a main truncated power-law component, a Gaussian component, and a third very massive component. Both models can reasonably fit the data and a sharp drop of the mass distribution is found at $\sim 50M_\odot$, suggesting that the majority of the observed black holes can be explained by the stellar evolution scenarios in which the pulsational pair-instability process takes place. On the other hand, the very massive sub-population, which accounts for at most several percents of the total, may be formed through hierarchical mergers or other processes.
description: Accepted for publication in ApJ (This manuscript incorporating the GWTC-2 data is to replace arXiv:2009.03854 that was based on the GWTC-1 data.)
Andrzej Friszke, Czas KOR-u. Jacek Kuroń a geneza Solidarności
Creators: name: Brier, Robert
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2015

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 64 Nr. 3 (2015): Transpolonität? Gesellschaftliche Eliten in den polnischen Gebieten um 1900 jenseits der Nationalgeschichte(n)
Staging Samizdat: The Czech Art of Resistance, 1968-1989
Creators: name: Šneppová, Daniela
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2016

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 65 Nr. 1 (2016): Samizdat and Alternative Ways of Communications
Additional file 2 of Spatial epidemiology of Tabanus (Diptera: Tabanidae) vectors of Trypanosoma
Creators: name: Marques, Roberta
name: Jiménez-García, Daniel
name: Escobar, Luis E.
name: Krolow, Tiago Kütter
name: Krüger, Rodrigo Ferreira
Publisher: name: figshare
Year: 2025
Subjects: subject: Medicine
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: Supplementary Material 2. List of the occurrence records georeferenced in the Neotropical region of the six Tabanus species used in ecological niche modeling. These occurrences are results after the filter of the 5-km area. The coordinates are represented in decimal degrees.
Permeation as a Diffusion Process
Creators: name: Eisenberg, Bob
Publisher: name: arXiv
Year: 2008
Subjects: subject: Biomolecules (q-bio.BM)
subject: Biological Physics (physics.bio-ph)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The paper shows how the diffusive movement of ions through a channel protein can be described as a chemical reaction over an arbitrary shaped potential barrier. The result is simple and intuitive but without approximation beyond the electrodiffusion description of ion movement.
description: This is a posting of a paper written in 2000, for the Biophysics Textbook On Line Channels, Receptors, and Transporters Louis J. DeFelice, Volume Editor which is hard to find. Bob Eisenberg is also known as RS Eisenberg
Additional file 3 of Spatial epidemiology of Tabanus (Diptera: Tabanidae) vectors of Trypanosoma
Creators: name: Marques, Roberta
name: Jiménez-García, Daniel
name: Escobar, Luis E.
name: Krolow, Tiago Kütter
name: Krüger, Rodrigo Ferreira
Publisher: name: figshare
Year: 2025
Subjects: subject: Medicine
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: Supplementary Material 3. Tabanus species occurrences (black points) in the Neotropical region and the 100-km buffer (M = pink circles) used in the calibration models.
A Linearization of Connes' Embedding Problem
Creators: name: Collins, Benoit
name: Dykema, Ken
Publisher: name: arXiv
Year: 2007
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L10 [15A42]

description: We show that Connes' embedding problem for II_1-factors is equivalent to a statement about distributions of sums of self-adjoint operators with matrix coefficients. This is an application of a linearization result for finite von Neumann algebras, which is proved using asymptotic second order freeness of Gaussian random matrices.
description: 25pp
Der deutsche Krieg im Osten 1941-1944. Facetten einer Grenzüberschreitung
Creators: name: Böhler, Jochen
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2010

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 59 Nr. 2 (2010)
Radiative recombination of twisted electrons with hydrogen-like heavy ions: Linear polarization of emitted photons
Creators: name: Maiorova, Anna V.
name: Peshkov, Anton A.
name: Surzhykov, Andrey
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present a theoretical investigation of the radiative recombination of twisted Bessel electrons with initially hydrogen-like (finally helium-like) heavy ions. In our study, we focus especially on the linear polarization of x-ray photons emitted in the electron capture into the ground $1s^2_{1/2}$ ionic state. Particular emphasis is placed on the question of how this polarization is affected if incident hydrogen-like ions are themselves spin-polarized. To explore such a "polarization transfer" we apply the density matrix theory and derive the Stokes parameters of recombination x-rays for the realistic case of collisions between macroscopic electron and ion beams. Based on the developed general approach two scenarios are discussed that are of interest for the planned experiments at ion storage rings. First, we demonstrate how the use of twisted electrons can empower the known method for the diagnostics of spin-polarized ion beams, based on the rotation of the linear polarization of recombination light. In the second scenario we show how the internal structure of ions beams with inhomogeneous intensity and spin patterns can be probed by the capture of Bessel electrons, carrying different values of angular momentum.
Non-linear seismic analysis of a one-storey precast concrete building
Creators: name: Tong, William Kin Tak
Publisher: name: University of British Columbia
Year: 2010

description: A non-linear seismic analysis of a one-storey box-type precast concrete building with discrete connections between precast elements is presented. The building is idealized as a single-degree spring-mass-damper system. The inelastic spring represents the total lateral resistance provided by the shear walls, which are in turn idealized as series of rigid panels connected together by non-linear connection springs. Hysteretic models for connections are derived based on results from experiments in which simulated earthquake loading was applied to various isolated connections. The response of the building to various earthquake ground motions is determined using a time-step calculation method. The effects of different connection characteristics on the seismic response of the building are studied, and the behaviour of the building as predicted by the non-linear analysis is compared with the behaviour implied by the assumptions that underly the code provisions. Results of this study indicate that a one-storey precast concrete building designed using the quasi-static force method can resist a major earthquake without serious distress in the connections. In order to reduce the seismic forces, base connections with high tensile strength across the connecting interface and overdesigned vertical connections between wall panels must be avoided.
Differential Equations of Genus Four Hyperelliptic $\wp$ Functions
Creators: name: Hayashi, Masahito
name: Shigemoto, Kazuyasu
name: Tsukioka, Takuya
Publisher: name: arXiv
Year: 2021
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In order to find higher dimensional integrable models, we study differential equations of hyperelliptic $\wp$ functions up to genus four. For genus two, differential equations of hyperelliptic $\wp$ functions can be written in the Hirota form. If the genus is more than one, we have KdV equation. If the genus is more than two, we have KdV and another KdV equations. If the genus becomes more than three, there appear differential equations which cannot be written in the Hirota form, which means that the Hirota form is not enough to characterize the integrable differential equations. We have shown that some differential equations are satisfied for general genus. We can obtain differential equations for general genus step by step.
description: 19 pages
The $^{8}$He and $^{10}$He spectra studied in the $(t$,$p)$ reaction
Creators: name: Golovkov, M. S.
name: Grigorenko, L. V.
name: Ter-Akopian, G. M.
name: Fomichev, A. S.
name: Oganessian, Yu. Ts.
name: Gorshkov, V. A.
name: Krupko, S. A.
name: Rodin, A. M.
name: Sidorchuk, S. I.
name: Slepnev, R. S.
name: Stepantsov, S. V.
name: Wolski, R.
name: Pang, D. Y.
name: Chudoba, V.
name: Korsheninnikov, A. A.
name: Kuzmin, E. A.
name: Nikolskii, E. Yu.
name: Novatskii, B. G.
name: Stepanov, D. N.
name: Roussel-Chomaz, P.
name: Mittig, W.
name: Ninane, A.
name: Hanappe, F.
name: Stuttge, L.
name: Yukhimchuk, A. A.
name: Perevozchikov, V. V.
name: Vinogradov, Yu. I.
name: Grishechkin, S. K.
name: Zlatoustovskiy, S. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The low-lying spectra of $^8$He and $^{10}$He nuclei were studied in the $^3$H($^6$He,$p$)$^8$He and $^3$H($^8$He,$p$)$^{10}$He transfer reactions. The $0^+$ ground state (g.s.) of $^8$He and excited states, $2^+$ at $3.6-3.9$ MeV and $(1^+)$ at $5.3-5.5$ MeV, were populated with cross sections of 200, 100-250, and 90-125 $μ$b/sr, respectively. Some evidence for $^8$He state at about 7.5 MeV is obtained. We discuss a possible nature of the near-threshold anomaly above 2.14 MeV in $^8$He and relate it to the population of a $1^-$ continuum (soft dipole excitation) with peak value at about 3 MeV. The lowest energy group of events in the $^{10}$He spectrum was observed at $\sim 3$ MeV with a cross section of $\sim 140$ $μ$b/sr. We argue that this result is possibly consistent with the previously reported observation of $^{10}$He, in that case providing a new g.s. position for $^{10}$He at about 3 MeV.
description: 18 pages, 8 figures, submitted to Phys. Lett. B
Probing the helium dimer by relativistic highly-charged projectiles
Creators: name: Najjari, B.
name: Wang, Z.
name: Voitkiv, A. B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We study the fragmentation of He$_2$ dimers into He$^+$ ions by relativistic highly-charged projectiles. It is demonstrated that the interaction between an ultrafast projectile with an extremely extended object -- the helium dimer -- possesses interesting features which are absent in collisions with "normal" molecules. It is also shown that such projectiles, due to their enormous interaction range, can accurately probe the ground state of the dimer and even be used for a precise determination of its binding energy.
description: 5 pages, 5 figures
Additional file 4 of Spatial epidemiology of Tabanus (Diptera: Tabanidae) vectors of Trypanosoma
Creators: name: Marques, Roberta
name: Jiménez-García, Daniel
name: Escobar, Luis E.
name: Krolow, Tiago Kütter
name: Krüger, Rodrigo Ferreira
Publisher: name: figshare
Year: 2025
Subjects: subject: Medicine
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: Supplementary Material 4. Models calibrated and evaluated for each Tabanus species, according to significance, performance, and low complexity. Final models selected according to these criteria are shown in the last column.
Stability of superthermal strahl electrons in the solar wind
Creators: name: Schroeder, Jack M.
name: Boldyrev, Stanislav
name: Astfalk, Patrick
Publisher: name: arXiv
Year: 2021
Subjects: subject: Space Physics (physics.space-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We present a kinetic stability analysis of the solar wind electron distribution function consisting of the Maxwellian core and the magnetic-field aligned strahl, a superthermal electron beam propagating away from the sun. We use an electron strahl distribution function obtained as a solution of a weakly collisional drift-kinetic equation, representative of a strahl affected by Coulomb collisions but unadulterated by possible broadening from turbulence. This distribution function is essentially non-Maxwellian and varies with the heliospheric distance. The stability analysis is performed with the Vlasov-Maxwell linear solver LEOPARD. We find that depending on the heliospheric distance, the core-strahl electron distribution becomes unstable with respect to sunward-propagating kinetic-Alfvén, magnetosonic, and whistler modes, in a broad range of propagation angles. The wavenumbers of the unstable modes are close to the ion inertial scales, and the radial distances at which the instabilities first appear are on the order of 1 AU. However, we have not detected any instabilities driven by resonant wave interactions with the superthermal strahl electrons. Instead, the observed instabilities are triggered by a relative drift between the electron and ion cores necessary to maintain zero electric current in the solar wind frame (ion frame). Contrary to strahl distributions modeled by shifted Maxwellians, the electron strahl obtained as a solution of the kinetic equation is stable. Our results are consistent with the previous studies based on a more restricted solution for the electron strahl.
description: 8 pages, 6 figures. Accepted by Monthly Notices of the Royal Astronomical Society. Removed references from abstract, added references in body. Other minor editorial changes
Neutron electric polarizability from unquenched lattice QCD using the background field approach
Creators: name: Engelhardt, Michael
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: A calculational scheme for obtaining the electric polarizability of the neutron in lattice QCD with dynamical quarks is developed, using the background field approach. The scheme differs substantially from methods previously used in the quenched approximation, the physical reason being that the QCD ensemble is no longer independent of the external electromagnetic field in the dynamical quark case. One is led to compute (certain integrals over) four-point functions. Particular emphasis is also placed on the physical role of constant external gauge fields on a finite lattice; the presence of these fields complicates the extraction of polarizabilities, since it gives rise to an additional shift of the neutron mass unrelated to polarizability effects. The method is tested on a SU(3) flavor-symmetric ensemble furnished by the MILC Collaboration, corresponding to a pion mass of m_pi = 759 MeV. Disconnected diagrams are evaluated using stochastic estimation. A small negative electric polarizability of alpha =(-2.0 +/- 0.9) 10^(-4) fm^3 is found for the neutron at this rather large pion mass; this result does not seem implausible in view of the qualitative behavior of alpha as a function of m_pi suggested by Chiral Effective Theory.
description: 36 pages, 11 figures. Note added concerning analytic continuation in the external electric field; some notation made more precise
Learning Team-Based Navigation: A Review of Deep Reinforcement Learning Techniques for Multi-Agent Pathfinding
Creators: name: Chung, Jaehoon
name: Fayyad, Jamil
name: Younes, Younes Al
name: Najjaran, Homayoun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Multiagent Systems (cs.MA)
subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Multi-agent pathfinding (MAPF) is a critical field in many large-scale robotic applications, often being the fundamental step in multi-agent systems. The increasing complexity of MAPF in complex and crowded environments, however, critically diminishes the effectiveness of existing solutions. In contrast to other studies that have either presented a general overview of the recent advancements in MAPF or extensively reviewed Deep Reinforcement Learning (DRL) within multi-agent system settings independently, our work presented in this review paper focuses on highlighting the integration of DRL-based approaches in MAPF. Moreover, we aim to bridge the current gap in evaluating MAPF solutions by addressing the lack of unified evaluation metrics and providing comprehensive clarification on these metrics. Finally, our paper discusses the potential of model-based DRL as a promising future direction and provides its required foundational understanding to address current challenges in MAPF. Our objective is to assist readers in gaining insight into the current research direction, providing unified metrics for comparing different MAPF algorithms and expanding their knowledge of model-based DRL to address the existing challenges in MAPF.
description: 36 pages, 10 figures, published in Artif Intell Rev 57, 41 (2024)
Statistics of Extreme Values in Time Series with Intermediate-Term Correlations
Creators: name: Pennetta, Cecilia
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: It will be discussed the statistics of the extreme values in time series characterized by finite-term correlations with non-exponential decay. Precisely, it will be considered the results of numerical analyses concerning the return intervals of extreme values of the fluctuations of resistance and defect-fraction displayed by a resistor with granular structure in a nonequilibrium stationary state. The resistance and defect-fraction are calculated as a function of time by Monte Carlo simulations using a resistor network approach. It will be shown that when the auto-correlation function of the fluctuations displays a non-exponential and non-power-law decay, the distribution of the return intervals of extreme values is a stretched exponential, with exponent largely independent of the threshold. Recently, a stretched exponential distribution of the return intervals of extreme values has been identified in long-term correlated time series by Bunde et al. (2003) and Altmann and Kantz (2005). Thus, the present results show that the stretched exponential distribution of the return intervals is not an exclusive feature of long-term correlated time series.
description: 6 pages, 7 figures, conference paper, in Noise and Stochastics in Complex Systems and Finance, ed. by J. Kertez, S. Bornhold, R. N. Mantegna, Procs. of SPIE, vol. 6601, 19, 2007
Enhancing Network Initialization for Medical AI Models Using Large-Scale, Unlabeled Natural Images
Creators: name: Arasteh, Soroosh Tayebi
name: Misera, Leo
name: Kather, Jakob Nikolas
name: Truhn, Daniel
name: Nebelung, Sven
Publisher: name: arXiv
Year: 2023
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Pre-training datasets, like ImageNet, have become the gold standard in medical image analysis. However, the emergence of self-supervised learning (SSL), which leverages unlabeled data to learn robust features, presents an opportunity to bypass the intensive labeling process. In this study, we explored if SSL for pre-training on non-medical images can be applied to chest radiographs and how it compares to supervised pre-training on non-medical images and on medical images. We utilized a vision transformer and initialized its weights based on (i) SSL pre-training on natural images (DINOv2), (ii) SL pre-training on natural images (ImageNet dataset), and (iii) SL pre-training on chest radiographs from the MIMIC-CXR database. We tested our approach on over 800,000 chest radiographs from six large global datasets, diagnosing more than 20 different imaging findings. Our SSL pre-training on curated images not only outperformed ImageNet-based pre-training (P<0.001 for all datasets) but, in certain cases, also exceeded SL on the MIMIC-CXR dataset. Our findings suggest that selecting the right pre-training strategy, especially with SSL, can be pivotal for improving artificial intelligence (AI)'s diagnostic accuracy in medical imaging. By demonstrating the promise of SSL in chest radiograph analysis, we underline a transformative shift towards more efficient and accurate AI models in medical imaging.
description: Published in European Radiology Experimental
Additional file 5 of Spatial epidemiology of Tabanus (Diptera: Tabanidae) vectors of Trypanosoma
Creators: name: Marques, Roberta
name: Jiménez-García, Daniel
name: Escobar, Luis E.
name: Krolow, Tiago Kütter
name: Krüger, Rodrigo Ferreira
Publisher: name: figshare
Year: 2025
Subjects: subject: Medicine
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: Supplementary Material 5. Best models selected by evaluation based on pROC (statistical significance), omission rate OR (performance), and AICc (complexity). All models were calibrated and projected using principal components from 15 climatic variables from the WorldClim Global Climate Database 1.4.
Katrin Reichelt, Lettland unter deutscher Besatzung 1941-1944. Der lettische Anteil am Holocaust
Creators: name: Tauber, Joachim
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2012

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 61 Nr. 1 (2012)
Spin-orbit enabled quantum transport channels in a two-hole double quantum dot
Creators: name: Bogan, Alex
name: Studenikin, Sergei
name: Korkusinski, Marek
name: Gaudreau, Louis
name: Phoenix, Jason
name: Zawadzki, Piotr
name: Sachrajda, Andy
name: Tracy, Lisa
name: Reno, John
name: Hargett, Terry
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We analyze experimentally and theoretically the transport spectra of a gated lateral GaAs double quantum dot containing two holes. The strong spin-orbit interaction present in the hole subband lifts the Pauli spin blockade and allows to map out the complete spectra of the two-hole system. By performing measurements in both source-drain voltage directions, at different detunings and magnetic fields, we carry out quantitative fitting to a Hubbard two-site model accounting for the tunnel coupling to the leads and the spin-flip relaxation process. We extract the singlet-triplet gap and the magnetic field corresponding to the singlet-triplet transition in the double-hole ground state. Additionally, at the singlet-triplet transition we find a resonant enhancement (in the blockaded direction) and suppression of current (in the conduction direction). The current enhancement stems from the multiple resonance of two-hole levels, opening several conduction channels at once. The current suppression arises from the quantum interference of spin-conserving and spin flipping tunneling processes.
description: 43 pages, 14 figures
Olga Kurilo, Soppot, Cranz, Rigascher Strand. Ostseebäder im 19. und 20. Jahrhundert
Creators: name: Schutte, Christoph
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2011

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 60 Nr. 3 (2011)
Quantum to Classical Transition of the Charge Relaxation Resistance of a Mesoscopic Capacitor
Creators: name: Nigg, Simon E.
name: Buttiker, Markus
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present an analysis of the effect of dephasing on the single channel charge relaxation resistance of a mesoscopic capacitor in the linear low frequency regime. The capacitor consists of a cavity which is via a quantum point contact connected to an electron reservoir and Coulomb coupled to a gate. The capacitor is in a perpendicular high magnetic field such that only one (spin polarized) edge state is (partially) transmitted through the contact. In the coherent limit the charge relaxation resistance for a single channel contact is independent of the transmission probability of the contact and given by half a resistance quantum. The loss of coherence in the conductor is modeled by attaching to it a fictitious probe, which draws no net current. In the incoherent limit one could expect a charge relaxation resistance that is inversely proportional to the transmission probability of the quantum point contact. However, such a two terminal result requires that scattering is between two electron reservoirs which provide full inelastic relaxation. We find that dephasing of a single edge state in the cavity is not sufficient to generate an interface resistance. As a consequence the charge relaxation resistance is given by the sum of one constant interface resistance and the (original) Landauer resistance. The same result is obtained in the high temperature regime due to energy averaging over many occupied states in the cavity. Only for a large number of open dephasing channels, describing spatially homogenous dephasing in the cavity, do we recover the two terminal resistance, which is inversely proportional to the transmission probability of the QPC. We compare different dephasing models and discuss the relation of our results to a recent experiment.
description: 10 pages, 8 figures
Additional file 1 of Pharmacological effects of bile acids on polycystic ovary syndrome via the regulation of chemerin
Creators: name: Tong, Tian-Tian
name: Bai, Long-Bo
name: Yau, Lee-Fong
name: Li, Jiu-Yan
name: Huang, Hao
name: Jiang, Zhi-Hong
Publisher: name: figshare
Year: 2025
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Supplementary Material 1.
Diffractive Parton Distributions from Fits with Higher Twist
Creators: name: Golec-Biernat, Krzysztof
name: Luszczak, Agnieszka
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We determine diffractive parton distributions of the proton from DGLAP based fits to HERA data including the twist--4 contribution from longitudinal polarized virtual photons, which is known to be important in the region of large beta. The biggest impact of this contribution is on the diffractive gluon distribution and on the diffractive longitudinal structure function to be determined from HERA data.
description: 4 pages, 2 figures, to appear in the proceedings of the DIS 2008 Workshop, 7-11 April 2008, University College London
Anatol Schmied-Kowarzik, Unteilbar und untrennbar? Die Verhandlungen zwischen Cisleithanien und Ungarn zum gescheiterten Wirtschaftsausgleich 1897
Creators: name: Müller, Uwe
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2014

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 63 Nr. 2 (2014)
Proca Q-balls and Q-shells
Creators: name: Heeck, Julian
name: Rajaraman, Arvind
name: Riley, Rebecca
name: Verhaaren, Christopher B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Non-topological solitons such as Q-balls and Q-shells have been studied for scalar fields invariant under global and gauged U(1) symmetries. We generalize this framework to include a Proca mass for the gauge boson, which can arise either from spontaneous symmetry breaking or via the Stückelberg mechanism. A heavy (light) gauge boson leads to solitons reminiscent of the global (gauged) case, but for intermediate values these Proca solitons exhibit completely novel features such as disconnected regions of viable parameter space and Q-shells with unbounded radius. We provide numerical solutions and excellent analytic approximations for both Proca Q-balls and Q-shells. These allow us to not only demonstrate the novel features numerically, but also understand and predict their origin analytically.
description: 21 pages, 5 figures; matches published version
Additional file 6 of Spatial epidemiology of Tabanus (Diptera: Tabanidae) vectors of Trypanosoma
Creators: name: Marques, Roberta
name: Jiménez-García, Daniel
name: Escobar, Luis E.
name: Krolow, Tiago Kütter
name: Krüger, Rodrigo Ferreira
Publisher: name: figshare
Year: 2025
Subjects: subject: Medicine
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: Supplementary Material 6. MOP analysis of extrapolation risk from the calibration area under the Neotropical region projection. Blue areas represent levels of similarity between calibration areas and the projection areas. Red values represent strict extrapolative areas.
A Charge and Spin Readout Scheme For Single Self-Assembled Quantum Dots
Creators: name: Heiss, D.
name: Jovanov, V.
name: Bichler, M.
name: Abstreiter, G.
name: Finley, J. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose an all optical spin initialization and readout concept for single self assembled quantum dots and demonstrate its feasibility. Our approach is based on a gateable single dot photodiode structure that can be switched between charge and readout mode. After optical electron generation and storage, we propose to employ a spin-conditional absorption of a circularly polarized light pulse tuned to the single negatively charged exciton transition to convert the spin information of the resident electron to charge occupancy. Switching the device to the charge readout mode then allows us to probe the charge state of the quantum dot (1e, 2e) using non-resonant luminescence. The spin orientation of the resident electron is then reflected by the photoluminescence yield of doubly and singly charged transitions in the quantum dot. To verify the feasibility of this spin readout concept, we have applied time gated photoluminescence to confirm that selective optical charging and efficient non perturbative measurement of the charge state can be performed on the same dot. The results show that, by switching the electric field in the vicinity of the quantum dot, the charging rate can be switched between a regime of efficient electron generation and a readout regime, where the charge occupancy and, therefore, the spin state of the dot can be tested via PL over millisecond timescales, without altering it.
description: 20 Pages, 6 Figures, submitted to Phys. Rev. B
B-stability of numerical integrators on Riemannian manifolds
Creators: name: Arnold, Martin
name: Celledoni, Elena
name: Çokaj, Ergys
name: Owren, Brynjulf
name: Tumiotto, Denise
Publisher: name: arXiv
Year: 2023
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: Primary: 65L20. Secondary: 34C40, 53-08, 58D17, 65L05

description: We propose a generalization of nonlinear stability of numerical one-step integrators to Riemannian manifolds in the spirit of Butcher's notion of B-stability. Taking inspiration from Simpson-Porco and Bullo, we introduce non-expansive systems on such manifolds and define B-stability of integrators. In this first exposition, we provide concrete results for a geodesic version of the Implicit Euler (GIE) scheme. We prove that the GIE method is B-stable on Riemannian manifolds with non-positive sectional curvature. We show through numerical examples that the GIE method is expansive when applied to a certain non-expansive vector field on the 2-sphere, and that the GIE method does not necessarily possess a unique solution for large enough step sizes. Finally, we derive a new improved global error estimate for general Lie group integrators.
A note on the cyclic evolution of the pulsar magnetosphere
Creators: name: Contopoulos, Ioannis
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Positive and negative pulsar breaking indices suggest that some fraction of the pulsar spindown torque undergoes a cyclic evolution. The observed strong correlation of `anomalous' breaking indices with pulsar age implies that the characteristic periodicity timescale is in the range 100 to 10,000 years depending on the fraction of the spindown torque that undergoes cyclic evolution, 1 to 100% respectively. We argue that the longest variability timescale is consistent with a neutron star magnetic cycle similar to the solar cycle.
description: Accepted for publication in Astronomy & Astrophysics
Missing level statistics in a dissipative microwave resonator with partially violated time-reversal invariance
Creators: name: Bialous, Malgorzata
name: Dietz, Barbara
name: Sirko, Leszek
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We report on the experimental investigation of the fluctuation properties in the resonance frequency spectra of a flat resonator simulating a dissipative quantum billiard subject to partial time-reversal invariance violation (TIV) which is induced by two magnetized ferrites. The cavity has the shape of a quarter bowtie billiard of which the corresponding classical dynamics is chaotic. Due to dissipation it is impossible to identify a complete list of resonance frequencies. Based on a random-matrix theory approach we derive analytical expressions for statistical measures of short- and long-range correlations in such incomplete spectra interpolating between the cases of preserved time-reversal invariance and complete TIV and demonstrate their applicability to the experimental spectra.
Hydrodynamic coefficients for axisymmetric bodies at finite depth
Creators: name: Chan, Johnson L. K.
Publisher: name: University of British Columbia
Year: 2010

description: A numerical procedure for the calculation of velocity potential, for axisymmetric shapes is studied. The procedure incorporates linearized free surface and radiation conditions. Forced heave, surge, pitch induced velocity potentials and wave diffraction potentials are considered as specific applications. Details of the analytical steps necessary to reduce the three dimensional integral equations to two dimensional equivalent equations are given in the appendix. The hydrodynamic coefficients and existing forces for four well studied examples are presented and compared to published results by other numerical methods. The method studied here offers considerable savings in computer time, as the input requirements and the computational efforts are reduced by intermediate analytical steps.
Andrzej Friszke, Anatomia buntu. Kuroń, Modzelewski i komandosi
Creators: name: Brier, Robert
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2015

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 64 Nr. 3 (2015): Transpolonität? Gesellschaftliche Eliten in den polnischen Gebieten um 1900 jenseits der Nationalgeschichte(n)
Open Letters: Substance and Circumstances of Communication Processes in Late Socialist Czechoslovakia and Poland
Creators: name: Stegmann, Natali
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2016

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 65 Nr. 1 (2016): Samizdat and Alternative Ways of Communications
Hermite-Chebyshev pseudospectral method for inhomogeneous superconducting strip problems and magnetic flux pump modeling
Creators: name: Sokolovsky, Vladimir
name: Prigozhin, Leonid
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: G.1.9
subject: 78M22, 78M10, 45E99

description: Numerical simulation of superconducting devices is a powerful tool for understanding the principles of their work and improving their design. We present a new pseudospectral method for two-dimensional magnetization and transport current superconducting strip problems with an arbitrary current-voltage relation, spatially inhomogeneous strips, and strips in a nonuniform applied field. The method is based on the bivariate expansions in Chebyshev polynomials and Hermite functions. It can be used for numerical modeling magnetic flux pumps of different types and investigating AC losses in coated conductors with local defects. Using a realistic two-dimensional version of the superconducting dynamo benchmark problem as an example, we showed that our new method is a competitive alternative to finite element methods.
description: 20 pages
Case-deletion importance sampling estimators: Central limit theorems and related results
Creators: name: Epifani, Ilenia
name: MacEachern, Steven N.
name: Peruggia, Mario
Publisher: name: arXiv
Year: 2008
Subjects: subject: Computation (stat.CO)
subject: FOS: Computer and information sciences
subject: 62F15, 62J20 (Primary)

description: Case-deleted analysis is a popular method for evaluating the influence of a subset of cases on inference. The use of Monte Carlo estimation strategies in complicated Bayesian settings leads naturally to the use of importance sampling techniques to assess the divergence between full-data and case-deleted posteriors and to provide estimates under the case-deleted posteriors. However, the dependability of the importance sampling estimators depends critically on the variability of the case-deleted weights. We provide theoretical results concerning the assessment of the dependability of case-deleted importance sampling estimators in several Bayesian models. In particular, these results allow us to establish whether or not the estimators satisfy a central limit theorem. Because the conditions we derive are of a simple analytical nature, the assessment of the dependability of the estimators can be verified routinely before estimation is performed. We illustrate the use of the results in several examples.
description: Published in at http://dx.doi.org/10.1214/08-EJS259 the Electronic Journal of Statistics (http://www.i-journals.org/ejs/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Log Parsing Evaluation in the Era of Modern Software Systems
Creators: name: Petrescu, Stefan
name: Hengst, Floris den
name: Uta, Alexandru
name: Rellermeyer, Jan S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Due to the complexity and size of modern software systems, the amount of logs generated is tremendous. Hence, it is infeasible to manually investigate these data in a reasonable time, thereby requiring automating log analysis to derive insights about the functioning of the systems. Motivated by an industry use-case, we zoom-in on one integral part of automated log analysis, log parsing, which is the prerequisite to deriving any insights from logs. Our investigation reveals problematic aspects within the log parsing field, particularly its inefficiency in handling heterogeneous real-world logs. We show this by assessing the 14 most-recognized log parsing approaches in the literature using (i) nine publicly available datasets, (ii) one dataset comprised of combined publicly available data, and (iii) one dataset generated within the infrastructure of a large bank. Subsequently, toward improving log parsing robustness in real-world production scenarios, we propose a tool, Logchimera, that enables estimating log parsing performance in industry contexts through generating synthetic log data that resemble industry logs. Our contributions serve as a foundation to consolidate past research efforts, facilitate future research advancements, and establish a strong link between research and industry log parsing.