cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Phase transition in Pr0.5Ca0.5CoO3 and related cobaltites
Creators: name: Hejtmanek, J.
name: Jirak, Z.
name: Kaman, O.
name: Knizek, K.
name: Santava, E.
name: Nitta, K.
name: Naito, T.
name: Fujishiro, H.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present an extensive investigation (magnetic, electric and thermal measurements and X-ray absorption spectroscopy) of the Pr0.5Ca0.5CoO3 and (Pr1-yYy)0.7Ca0.3CoO3 (y=0.0625-0.15) perovskites, in which a peculiar metal-insulator (M-I) transition, accompanied with pronounced structural and magnetic anomalies, occurs at 76 K and 40-132 K, respectively. The inspection of the M-I transition using the XANES data of Pr L3-edge and Co K-edge proofs the presence of Pr4+ ions at low temperatures and indicates simultaneously the intermediate spin to low spin crossover of Co species on lowering the temperature. The study thus definitively confirms the synchronicity of the electron transfer between Pr3+ ions and Co^(3+/4+)O3 subsystem and the transition to the low-spin, less electrically conducting phase. The large extent of the transfer is evidenced by the good quantitative agreement of the determined amount of the Pr4+ species, obtained either from the temperature dependence of the XANES spectra or via integration of the magnetic entropy change over the Pr4+ related Schottky peak in the low-temperature specific heat. These results show that the average valence of Pr3+/Pr4+ ions increases (in concomitance with the decrease of the formal Co valence) below TMI for (Pr0.925Y0.075)0.7Ca0.3CoO3 up to 3.16+ (the doping level of the CoO3 subsystem decreases from 3.30+ to 3.20+), for (Pr0.85Y0.15)0.7Ca0.3CoO3 up to 3.28+ (the decrease of doping level from 3.30+ to 3.13+) and for Pr0.5Ca0.5CoO3 up to 3.46+ (the decrease of doping level from 3.50+ to 3.27+).
description: 19 pages, 11 figures
Herschel-HIFI observations of high-J CO and isotopologues in star-forming regions: from low- to high-mass
Creators: name: Jose-Garcia, I. San
name: Mottram, J. C.
name: Kristensen, L. E.
name: van Dishoeck, E. F.
name: Yildiz, U. A.
name: van der Tak, F. F. S.
name: Herpin, F.
name: Visser, R.
name: McCoey, C.
name: Wyrowski, F.
name: Braine, J.
name: Johnstone, D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context; Our understanding of the star formation process has traditionally been confined to certain mass or luminosity boundaries because most studies focus only on low-, intermediate- or high-mass star-forming regions. As part of the "Water In Star-forming regions with Herschel" (WISH) key program, water and other important molecules, such as CO and OH, have been observed in 51 embedded young stellar objects (YSOs). The studied sample covers a range of luminosities from <1 to >10^5 L_sol. Aims; We analyse the CO line emission towards a large sample of protostars in terms of both line intensities and profiles. Methods; Herschel-HIFI spectra of the 12CO 10-9, 13CO 10-9 and C18O 5-4, 9-8 and 10-9 lines are analysed for a sample of 51 YSOs. In addition, JCMT spectra of 12CO 3-2 and C18O 3-2 extend this analysis to cooler gas components. Results; All observed CO and isotopologue spectra show a strong linear correlation between the logarithms of the line and bolometric luminosities across six orders of magnitude on both axes. This suggests that the high-J CO lines primarily trace the amount of dense gas associated with YSOs. This relation can be extended to larger (extragalactic) scales. The majority of the detected 12CO line profiles can be decomposed into a broad and a narrow Gaussian component, while the C18O spectra are mainly fitted with a single Gaussian. A broadening of the line profile is also observed from pre-stellar cores to embedded protostars, which is due mostly to non-thermal motions (turbulence/infall). The widths of the broad 12CO 3-2 and 10-9 velocity components correlate with those of the narrow C18O 9-8 profiles, suggesting that the entrained outflowing gas and envelope motions are related independent of the mass of the protostar. These results indicate that physical processes in protostellar envelopes have similar characteristics across the studied luminosity range.
description: Abridged abstract, 28 pages, 24 figures, 10 tables, accepted in Astronomy & Astrophysics
Dark Matter Phenomenology in 2HDMS in light of the 95 GeV excess
Creators: name: Dutta, Juhi
name: Lahiri, Jayita
name: Li, Cheng
name: Moortgat-Pick, Gudrid
name: Tabira, Sheikh Farah
name: Ziegler, Julia Anabell
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2023
Subjects: singlet: scalar
CERN LHC Coll: upgrade
dark matter
Higgs particle: doublet: 2
new physics
benchmark
lepton
pseudoscalar

description: The Two Higgs Doublet model extended with a complex scalar singlet (2HDMS) is a well-motivated Beyond Standard Model candidate addressing several open problems of nature. In this work, we focus on the dark matter (DM) phenomenology of the complex scalar singlet where the real part of the complex scalar obtains a vacuum expectation value. The model is characterized by an enlarged Higgs spectrum comprising six physical Higgs bosons and a pseudoscalar DM candidate. We address the impact of accommodating the 95 GeV excess on the 2HDMS parameter space and DM observables after including all theoretical and experimental constraints. Finally, we look into the prospects of this scenario at HL-LHC and future lepton colliders for a representative benchmark.
A Novel Ultrasonic Cavitation Peening Approach Assisted by Water Jet
Creators: name: Bai, Fushi
name: Wang, Liang
name: Saalbach, Kai-Alexander
name: Twiefel, Jens
Publisher: name: Basel : Molecular Diversity Preservation International (MDPI)
Year: 2018
Subjects: subject: water jet
subject: ultrasonic cavitation peening
subject: water film
subject: standoff distance
subject: microhardness
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Ultrasonic cavitation peening is an environmentally friendly technology to improve surface properties. In the traditional ultrasonic cavitation peening process, specimens have to be immersed in a liquid and temperature control is required, which limits the wide usage of this technology due to the geometry and complicated setup. In order to improve this process, water is slowly jetted (75 mL/min) into the gap between the sonotrode tip and specimen surface. The water jet makes the gap full of water. Thus, cavitation bubbles can be generated in the gap as the traditional ultrasonic cavitation peening process. In this case, the water container and temperature control are no longer necessary. The goal of this contribution is to evaluate the treatment effectiveness of this novel approach by the impact loads, the volume loss, the surface roughness, the microhardness and the microstructure of the specimen surface. The results indicate that a higher input power is beneficial and there would be an optimal gap width for this novel ultrasonic cavitation peening process.
Charged D3-D7 plasmas: novel solutions, extremality and stability issues
Creators: name: Bigazzi, Francesco
name: Cotrone, Aldo L.
name: Tarrio, Javier
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study finite temperature N=4 Super Yang-Mills (and more general gauge theories realized on intersecting D3-D7 branes) in the presence of dynamical massless fundamental matter fields at finite baryon charge density. We construct the holographic dual charged black hole solutions at first order in the flavor backreaction but exact in the charge density. The thermodynamical properties of the dual gauge theories coincide with the ones found in the usual charged D7-probe limit and the system turns out to be thermodynamically stable. By analyzing the higher order correction in the flavor backreaction, we provide a novel argument for the un-reliability of the charged probe approximation (and the present solution) in the extremality limit, i.e. at zero temperature. We then consider scalar mesonic-like bound states, whose spectrum is dual to that of linearized fluctuations of D7-brane worldvolume fields around our gravity backgrounds. In particular we focus on a scalar field saturating the Breitenlohner-Freedman bound in the flavorless limit, and coupled to fields dual to irrelevant operators. By looking at quasinormal modes of this scalar, we find no signals of instabilities in the regime of validity of the solutions.
description: 34 pages + appendix, 9 figures
Scaling in the Aging Dynamics of the Site-diluted Ising Model
Creators: name: Corberi, Federico
name: Lippiello, Eugenio
name: Mukherjee, Anupam
name: Puri, Sanjay
name: Zannetti, Marco
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study numerically the phase-ordering kinetics of the two-dimensional site-diluted Ising model. The data can be interpreted in a framework motivated by renormalization-group concepts. Apart from the usual fixed point of the non-diluted system, there exist two disorder fixed points, characterized by logarithmic and power-law growth of the ordered domains. This structure gives rise to a rich scaling behavior, with an interesting crossover due to the competition between fixed points, and violation of superuniversality.
description: 13 pages, 8 figures
Controlling the dynamics of an open many-body quantum system with localized dissipation
Creators: name: Barontini, G.
name: Labouvie, R.
name: Stubenrauch, F.
name: Vogler, A.
name: Guarrera, V.
name: Ott, H.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We experimentally investigate the action of a localized dissipative potential on a macroscopic matter wave, which we implement by shining an electron beam on an atomic Bose-Einstein condensate (BEC). We measure the losses induced by the dissipative potential as a function of the dissipation strength observing a paradoxical behavior when the strength of the dissipation exceeds a critical limit: for an increase of the dissipation rate the number of atoms lost from the BEC becomes lower. We repeat the experiment for different parameters of the electron beam and we compare our results with a simple theoretical model, finding excellent agreement. By monitoring the dynamics induced by the dissipative defect we identify the mechanisms which are responsible for the observed paradoxical behavior. We finally demonstrate the link between our dissipative dynamics and the measurement of the density distribution of the BEC allowing for a generalized definition of the Zeno effect. Due to the high degree of control on every parameter, our system is a promising candidate for the engineering of fully governable open quantum systems.
title: Comparing Data Augmentation Strategies for Deep Image Classification
titleType: Other
Creators: name: O'Gara, Sarah
Publisher: name: TU Dublin
Year: 2019

description: Currently deep learning requires large volumes of training data to fit accurate models. In practice, however, there is often insufficient training data available and augmentation is used to expand the dataset. Historically, only simple forms of augmentation, such as cropping and horizontal flips, were used. More complex augmentation methods have recently been developed, but it is still unclear which techniques are most effective, and at what stage of the learning process they should be introduced. This paper investigates data augmentation strategies for image classification, including the effectiveness of different forms of augmentation, dependency on the number of training examples, and when augmentation should be introduced during training. The most accurate results in all experiments are achieved using random erasing due to its ability to simulate occlusion. As expected, reducing the number of training examples significantly increases the importance of augmentation, but surprisingly the improvements in generalization from augmentation do not appear to be only as a result of augmentation preventing overfitting. Results also indicate a learning curriculum that injects augmentation after the initial learning phase has passed is more effective than the standard practice of using augmentation throughout, and that injection too late also reduces accuracy. We find that careful augmentation can improve accuracy by +2.83% to 95.85% using a ResNet model on CIFAR-10 with more dramatic improvements seen when there are fewer training examples. Source code is available at https://git.io/fjPPy
A study of dominant mosaic eye-color mutants in Drosophila melanogaster
Creators: name: Glass, Bentley, 1906-2005
Publisher: name: The University of Texas at Austin
Year: 1932
Subjects: subject: Drosophila melanogaster
subject: Brown locus mutants
subject: Drosophila genetics
subject: Eye-color mutants
subject: Mosaic eye-color
subject: Genetics
subject: FOS: Biological sciences
subject: Animal mutation
subject: Genetic translocation
subject: Chromosome inversions
subject: Genetic crossing over
subject: Allelomorphism
subject: Locus eye-color genetics
subject: Drosophila melanogaster--Genetics
subject: Animal mutation
subject: Translocation (Genetics)
subject: Chromosome inversions
subject: Crossing over (Genetics)
subject: Allelomorphism
subject: Color of eyes

description: 1. Six dominant mosaic eye-color mutants of the brown locus (II - 104.3) have been studied. All are over lethal when homozygous. The homozygotes are characterized by non-mosaic eye-color, and by wing abnormalities. These allelomorphs affect principally the yellow pigment of the eye, reducing or removing it entirely. 2. Four of these six are associated with mutual translocations; two with inversions only. In each case one of the breaks is at or very close to the locus concerned. 3. Flies have been obtained retaining the mutual translocation, but with normal eye-color. 4. One dominant allelomorph (Grape) of the mutant pink (III - 48.0) has been studied. It too affects the amount of the yellow pigment present in the eye. It is associated with a mutual translocation, and one break is at or very near the locus concerned. 5. Two dominant allelomorphic mosaic eye-colors (Moiré) located in the left arm of III are associated, one with an inversion, the other with a mutual translocation. 6. More than half of all chromosomal breaks occur in the immediate vicinity (genetic) of the spindle-fiber attachments in II and III. 7. When a break occurs in a subterminal region, crossing-over is affected in that arm in an amount which varies with the distance from the break. 7. When a break occurs near the spindle-fiber, crossing-over is very little affected in either arm. 8. Dobzhansky and Sturtevant's finding that crossing-over in a mutual translocation is increased in one chromosome when it is simultaneously inhibited in the other, is confirmed. 9. The ratio of orthoploid to aneuploid gametes in the cases studied is 1.4 (or 1.5) : 1. The existence of extremely aneuploid gametes is uncertain. 10. It is shown that in certain cases two chromosomes must have undergone synapsis in the form of a ring. This shows that crossing-over need not begin near the spindle-fiber and progress outwards, as has been suggested (Bridges and Morgan, '23; Graubard, '32). 11. A method is described for accurately determining the location of the spindle-fiber attachment with reference to known neighboring genes by means of the segregation of gametes in a mutual translocation. 12. A means is described for testing Serebrowsky and Dubinin's hypothesis that translocations and inversions occur by exchanges at points of contact between intertwisting chromosomes or portions of chromosomes
Abrasion monitoring and automatic chatter detection in cylindrical plunge grinding
Creators: name: Ahrens, M.
name: Fischer, R.
name: Dagen, M.
name: Denkena, Berend
name: Ortmaier, Tobias
Publisher: name: Amsterdam : Elsevier
Year: 2013
Subjects: subject: Grinding
subject: Modelling
subject: Monitoring
subject: Regenerative chatter
subject: Acceleration sensors
subject: Chatter vibrations
subject: Conventional grinding wheel
subject: Cylindrical plunge grinding
subject: Detection and estimation
subject: External cylindrical grinding
subject: Regenerative chatters
subject: Wavelet transformations
subject: Abrasion
subject: Eddy current testing
subject: Grinding (machining)
subject: Grinding machines
subject: Grinding wheels
subject: Machining centers
subject: Models
subject: Sensors
subject: Vibrations (mechanical)
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Using conventional grinding wheels, wheel-sided chatter vibration is one of the limiting factors in terms of productivity and surface finish. Initial vibration related to the dynamic behavior of the machine tool copy on the grinding wheel and its amplitude amplifies by abrasion. To ensure high workpiece quality many expensive truing cycles are needed. In this context, we suggest a new set-up for the automatic chatter detection and elimination for external cylindrical grinding machines, reducing not only the high amount of true running cycles, but also improving the efficiency. In order to suppress the generation of the waviness on the grinding wheel the effect has to be identified during an early stage of its development. Therefore, a grinding machine is equipped with different types of sensors, i.e., eddy current, force, acoustic emission, acceleration sensors, and a tactile probe. Experimental results show, that exclusively measuring the displacement at the workpiece is sufficient for online computing wheel's waviness. Based on a model of the grinding process the other redundant sensors are used for validation. In addition, a robust online chatter detector based on the wavelet transformation is developed recognizing an instable grinding process. This model-based detection and estimation of waviness delivers solid results, it should be used for suppression of chatter in further work.
Rare beauty and charm decays at LHCb
Creators: name: Albrecht, Johannes
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Rare heavy flavor decays are an ideal place to search for the effects of potential new particles that modify the decay rates or the Lorentz structure of the decay vertices. The LHCb experiment, a dedicated heavy flavour experiment at the LHC at CERN. It has recorded the worlds largest sample of heavy meson and lepton decays. The status of the rare decay analyses with 1\,fb$^{-1}$ of $\sqrt s = 7\,$TeV and 1.1\,fb$^{-1}$ of $\sqrt s = 8\,$TeV of $pp$--collisions collected by the LHCb experiment in 2011 and 2012 is reviewed. The worlds most precise measurements of the angular structure of $B^0\rightarrow K^{*0} μ^+ μ^-$ and $B^+\rightarrow K^{+} μ^+ μ^-$ decays is discussed, as well as the isospin asymmetry measurement in $B\rightarrow K^{(*)} μ^+ μ^-}$ decays. The first evidence for the very rare decay $B^0_s \rightarrow μ^+ μ^-$ is presented together with the most stringent upper exclusion limits on the branching fraction of decays of $B^0$, $D^0$ and $K^0_s$ mesons into two muons. This note finishes with the discussion of searches for lepton number and lepton flavor violating $τ$ decays.
description: Proceedings for the HCP 2012 conference
title: Pathological Speech Classification Using a Convolutional Neural Network
titleType: Other
Creators: name: Trinh, Nam H.
Publisher: name: TU Dublin
Year: 2019

description: Convolutional Neural Networks (CNNs) have enabled significant improvements across a number of applications in computer vision such as object detection, face recognition and image classification. An audio signal can be visually represented as a spectrogram that captures the time-varying frequency content of the signal. This paper describes how a CNN can be applied to the spectrogram of an audio signal to distinguish pathological from healthy speech. We propose a CNN structure and implement it using Keras to test the approach. A classification accuracy of over 95% is obtained in experiments on two public pathological speech datasets.
title: Improving Unsupervised Learning With Exemplar CNNS
titleType: Other
Creators: name: Arazo, Eric
Publisher: name: TU Dublin
Year: 2019

description: Most recent unsupervised learning methods explore alternative objectives, often referred to as self-supervised tasks, to train convolutional neural networks without the supervision of human annotated labels. This paper explores the generation of surrogate classes as a self-supervised alternative to learn discriminative features, and proposes a clustering algorithm to overcome one of the main limitations of this kind of approach. Our clustering technique improves the initial implementation and achieves 76.4% accuracy in the STL-10 test set, surpassing the current state-ofthe- art for the STL-10 unsupervised benchmark. We also explore several issues with the unlabeled set from STL-10 that should be considered in future research using this dataset.
Analysis of electron trajectories with two-color strong-field ionization
Creators: name: Henkel, Jost
name: Lein, Manfred
Publisher: name: College Park, MD : American Physical Society
Year: 2015
Subjects: subject: Color
subject: Ionization of gases
subject: Trajectories
subject: Electron trajectories
subject: Fundamental component
subject: Interference modeling
subject: Intracycle interferences
subject: Ionization dynamics
subject: Oscillatory structure
subject: Perpendicular polarization
subject: Strong field ionization
subject: Ionization
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Two-color ionization of atoms with a strong 800-nm fundamental component and a weak 400-nm component with perpendicular polarization gives detailed insight into the ionization dynamics. When the delay between the two colors is varied on a subcycle scale, the slow-electron signal shows an oscillatory structure due to intracycle interference between different ionization times. Using a trajectory-based interference model, we extract the relative strength of the two contributing pathways. Ionization times can be read directly from the delay scan, and the times for the long trajectories agree well with the quantum-orbit model. The fast electrons arise predominantly from long rescattering trajectories. © 2015 American Physical Society
English Sentence Recognition using Artificial Neural Network through Mouse-based Gestures
Creators: name: Parwej, Firoj
Publisher: name: arXiv
Year: 2013
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Handwriting is one of the most important means of daily communication. Although the problem of handwriting recognition has been considered for more than 60 years there are still many open issues, especially in the task of unconstrained handwritten sentence recognition. This paper focuses on the automatic system that recognizes continuous English sentence through a mouse-based gestures in real-time based on Artificial Neural Network. The proposed Artificial Neural Network is trained using the traditional backpropagation algorithm for self supervised neural network which provides the system with great learning ability and thus has proven highly successful in training for feed-forward Artificial Neural Network. The designed algorithm is not only capable of translating discrete gesture moves, but also continuous gestures through the mouse. In this paper we are using the efficient neural network approach for recognizing English sentence drawn by mouse. This approach shows an efficient way of extracting the boundary of the English Sentence and specifies the area of the recognition English sentence where it has been drawn in an image and then used Artificial Neural Network to recognize the English sentence. The proposed approach English sentence recognition (ESR) system is designed and tested successfully. Experimental results show that the higher speed and accuracy were examined.
description: 6 Pages, 7 Figures. arXiv admin note: text overlap with arXiv:1007.0627 by other authors without attribution
Salamandra salamandra homology annotation blastp-swissprot
Creators: name: Libro, Pietro
name: Chiocchio, Andrea
name: De Risky, Erika
name: Di Martino, Jessica
name: Bisconti, Roberta
name: castrignano, tiziana
name: Canestrelli, Daniele
Publisher: name: figshare
Year: 2023
Subjects: Bioinformatics and computational biology not elsewhere classified

description: Dispersal is a key process in ecology and evolutionary biology, as it shapes biodiversity patterns over space and time. Mounting evidence is showing that attitude to disperse is unevenly distributed among individuals within animal populations, and that individual personality can have pivotal roles in the shaping of this attitude. Here, we contribute to the study of the genetic underpinnings of dispersal-related behavioral variation by assembling and annotating the first de novo transcriptome of the head tissues of Salamandra salamandra. Although dispersal occurs mostly during the post-metamorphic terrestrial life stage in this species, variation in dispersal-related personality traits is already evident at the aquatic larval stage, making it an excellent candidate species for studies of carry-over effects. We employed a structured pipeline to de-novo assemble and annotate transcripts from RNA-Seq in a set of individuals representative of distinct behavioral profiles. We obtained 1,153,432,918 reads, which were successfully de novo assembled and annotated. The high-quality assembly was confirmed by comparing BUSCO, DETONATE and TransRate with the S. salamandra dataset. By aligning the contigs against the de novo transcriptome we obtained a percentage of mapping higher than 94%. The homology annotation performed with DIAMOND led to 153,048 (blastx) and 95,942 (blastp) shared contigs, annotated on NCBI nr, Swiss-Prot and TrEMBL. The domain and site protein prediction made with InterProScan led to 9850 GO-annotated contigs. This de-novo transcriptome represents reliable reference for whole transcriptome and proteome studies of other amphibians, for designing primers to clone specific genes or monitor their expression, and for analyzing comparative gene expression profiles between alternative behavioral types.
Massive gravity coupled to DBI Galileons is ghost free
Creators: name: Andrews, Melinda
name: Goon, Garrett
name: Hinterbichler, Kurt
name: Stokes, James
name: Trodden, Mark
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is possible to couple Dirac-Born-Infeld (DBI) scalars possessing generalized Galilean internal shift symmetries (Galileons) to nonlinear massive gravity in four dimensions, in such a manner that the interactions maintain the Galilean symmetry. Such a construction is of interest because it is not possible to couple such fields to massless General Relativity in the same way. We show that this theory has the primary constraint necessary to eliminate the Boulware-Deser ghost, thus preserving the attractive properties of both the Galileons and ghost-free massive gravity.
description: 4 pages. v2 references added, argument changed to use unconstrained spatial dreibeins
A simple tensor network algorithm for two-dimensional steady states
Creators: name: Kshetrimayum, Augustine
name: Weimer, Hendrik
name: Orús, Román
Publisher: name: London : Nature Publishing Group
Year: 2017
Subjects: subject: computer simulation
subject: human
subject: human experiment
subject: intuition
subject: steady state
subject: validity
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Understanding dissipation in 2D quantum many-body systems is an open challenge which has proven remarkably difficult. Here we show how numerical simulations for this problem are possible by means of a tensor network algorithm that approximates steady states of 2D quantum lattice dissipative systems in the thermodynamic limit. Our method is based on the intuition that strong dissipation kills quantum entanglement before it gets too large to handle. We test its validity by simulating a dissipative quantum Ising model, relevant for dissipative systems of interacting Rydberg atoms, and benchmark our simulations with a variational algorithm based on product and correlated states. Our results support the existence of a first order transition in this model, with no bistable region. We also simulate a dissipative spin 1/2 XYZ model, showing that there is no re-entrance of the ferromagnetic phase. Our method enables the computation of steady states in 2D quantum lattice systems.
Critical Wess-Zumino models with four supercharges in the functional renormalization group approach
Creators: name: Feldmann, Polina
name: Wipf, Andreas
name: Zambelli, Luca
Publisher: name: College Park : American Physical Society (APS)
Year: 2018
Subjects: subject: Wess-Zumino model
subject: effective field theory
subject: quantum field theories
subject: functional renormalization group
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We analyze the N = 1 supersymmetric Wess-Zumino model dimensionally reduced to the N = 2 supersymmetric model in three Euclidean dimensions. As in the original model in four dimensions and the N = (2, 2) model in two dimensions the superpotential is not renormalized. This property puts severe constraints on the nontrivial fixed-point solutions, which are studied in detail. We admit a field-dependent wave function renormalization that in a geometric language relates to a metric. The metric is not protected by supersymmetry and we calculate its explicit form at the fixed point. In addition we determine the exact quantum dimension of the chiral superfield and several critical exponents of interest, including the correction-to-scaling exponent omega, within the functional renormalization group approach. We compare the results obtained at different levels of truncation, exploring also a momentum-dependent wave function renormalization. Finally we briefly describe a tower of multicritical models in continuous dimensions.
Anisotropic conductance oscillations in Pb films on Si(557)
Creators: name: Lükermann, Daniel
name: Pfnür, Herbert
name: Tegenkamp, Christoph
Publisher: name: College Park, MD : American Physical Society
Year: 2010
Subjects: subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We correlate in this study the growth of Pb films on the stepped Si(557) surface at temperatures of 70 K, studied by low-energy electron diffraction, with the properties of electronic transport, measured by a macroscopic four-point probe technique. Despite a large lattice mismatch, layer-by-layer growth is observed, as most obvious from the characteristic oscillations in conductance with layer periodicity, incipient with the first monolayer both along and across the step direction. These findings demonstrate that lateral misfits (here almost 10%) in heteroepitaxial systems can be effectively compensated by substrate steps and can change the growth mode with respect to flat surfaces. While structurally the layers appear to be isotropic starting already with the third layer, anisotropy is seen in transport up to at least six monolayers with functional dependencies of conductance varying with layer thickness and measurement direction. Maxima of conductance oscillations up to five monolayers do not coincide with completion of individual layers. They are characteristic for the close coupling of structure and quantum effects. © 2010 The American Physical Society.
Arabidopsis plants perform arithmetic division to prevent starvation at night
Creators: name: Scialdone, Antonio
name: Mugford, Sam T.
name: Feike, Doreen
name: Skeffington, Alastair
name: Borrill, Philippa
name: Graf, Alexander
name: Smith, Alison M.
name: Howard, Martin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: Photosynthetic starch reserves that accumulate in Arabidopsis leaves during the day decrease approximately linearly with time at night to support metabolism and growth. We find that the rate of decrease is adjusted to accommodate variation in the time of onset of darkness and starch content, such that reserves last almost precisely until dawn. Generation of these dynamics therefore requires an arithmetic division computation between the starch content and expected time to dawn. We introduce two novel chemical kinetic models capable of implementing analog arithmetic division. Predictions from the models are successfully tested in plants perturbed by a night-time light period or by mutations in starch degradation pathways. Our experiments indicate which components of the starch degradation apparatus may be important for appropriate arithmetic division. Our results are potentially relevant for any biological system dependent on a food reserve for survival over a predictable time period.
description: To be published in eLIFE
title: Dirk Piekarski, Anonyme griechische Porträts des 4.Jhs. v. Chr. Chronologie und Typologie
Creators: name: Schulze, Harald
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Dirk Piekarski, Anonyme griechische Porträts des 4.Jhs. v. Chr. Chronologie und Typologie. Internationale Archäologie, Band 82. Verlag Marie Leidorf, Rahden 2004. 211 Seiten, 39 Tafeln mit 76 Abbildungen
Closing the gap between spatial and spin dynamics of electrons at the metal-to-insulator transition
Creators: name: Lonnemann, Jan G.
name: Rugeramigabo, Eddy P.
name: Oestreich, Michael
name: Hübner, Jens
Publisher: name: College Park, MD : American Physical Society
Year: 2017
Subjects: subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We combine extensive precision measurements of the optically detected spin dynamics and magneto-transport measurements in a contiguous set of n-doped bulk GaAs structures, in order to unambiguously unravel the intriguing but complex contributions to the spin relaxation at the metal-to-insulator transition (MIT). Just below the MIT, the interplay between hopping induced loss of spin coherence and hyperfine interaction yields a maximum spin lifetime exceeding 800 ns. At slightly higher doping concentrations, however, the spin relaxation deviates from the expected Dyakonov-Perel mechanism which is consistently explained by a reduction of the effective motional narrowing close to the MIT. The reduction is attributed to the change of the dominant momentum scattering mechanism in the metallic impurity band, where scattering by local conductivity domain boundaries due to the intrinsic random distribution of donors becomes significant. Here, we fully identify and model all intricate contributions of the relevant microscopic scattering mechanisms, which allows the complete quantitative modeling of the electron spin relaxation in the entire regime from weakly interacting up to fully delocalized electrons. © 2017 American Physical Society.
Hedera helix L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: H. Helix L. Cat. 171. Vgl.WilczekLit. 1928. Bis 1400m: Mont-Chemin (F.); anderehohe Stellen sind: Plex ob Collonges, 1260 m (F.); Ravoire, 1200m (F.); Törbel, 1200m (Stehler); obSaxon,1150m (Wilczek). (In Gärtenbis 1520m: Törbel.)
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
On the running coupling in the JIMWLK equation
Creators: name: Lappi, T.
name: Mäntysaari, H.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We propose a new method to implement the running coupling constant in the JIMWLK equation, imposing the scale dependence on the correlation function of the random noise in the Langevin formulation. We interpret this scale choice as the transverse momentum of the emitted gluon in one step of the evolution and show that it is related to the "Balitsky" prescription for the BK equation. This slows down the evolution speed of a practical solution of the JIMWLK equation, bringing it closer to the x-dependence inferred from fits to HERA data. We further study our proposal by a numerical comparison of the BK and JIMWLK equations.
description: 13 pages, 11 figures, RevTeX
title: Place Recognition in Challenging Conditions
titleType: Other
Creators: name: Ramachandran, Saravanabalagi
Publisher: name: TU Dublin
Year: 2019

description: Place recognition in a visual SLAM system helps build and maintain a map from multiple traversals of the same environment while closing loops to correct drift accumulated over time. Despite the marked success in visual place recognition research over the past decade, it remains a challenging problem in the context of variations caused due to different times of the day, weather, lighting and seasons. In this paper, we address this problem by progressively training convolutional neural networks in a siamese fashion to generate embeddings that encode semantic and visual features for sequence-aligned image pairs taken at different timescales and viewpoints. We present early results of the approach using Freiburg visual place recognition benchmark dataset consisting of aligned outdoor image sequences taken over extended time periods that include the variations mentioned above.
title: Gunnar Brands und Hans-Georg Severin (Hrsg.), Die spätantike Stadt und ihre Christianisierung. Symposium Halle an der Saale 2000
Creators: name: Päffgen, Bernd
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Gunnar Brands und Hans-Georg Severin (Hrsg.), Die spätantike Stadt und ihre Christianisierung. Symposium Halle an der Saale 2000 (= Spätantike – Frühes Christentum – Byzanz. Kunst im ersten Jahrtausend. Reihe B: Studien und Perspektiven, Bd. 11). Verlag Dr.
Ludwig Reichert, Wiesbaden 2003. VIII und 310 Seiten, 125 Tafeln
Bayesian Belief Network-based assessment of nutrient regulating ecosystem services in Northern Germany
Creators: name: Bicking, Sabine
name: Burkhard, Benjamin
name: Kruse, Marion
name: Müller, Felix
Publisher: name: San Francisco : Public Library of Science
Year: 2019
Subjects: subject: ecosystem service
subject: sustainable policy
subject: land use land cover
subject: CORINE
subject: Dewey Decimal Classification::500 | Naturwissenschaften::551 | Geologie, Hydrologie, Meteorologie

description: This study aims to assess the potential supply of the ecosystem service (ES) nutrient regulation on two spatial scales, the federal German state of Schleswig-Holstein (regional) and the Bornhöved Lakes District (local), exemplarily for the nutrient nitrogen. The methodology was developed using the ES matrix approach, which can be applied to evaluate and map ES at different geospatial units such as land use/land cover classes. A Bayesian Belief Network (BBN) was constructed in order to include additional spatial information on environmental characteristics in the assessment. The integration of additional data, which describes site-specific characteristics such as soil type and slope, resulted in shifted probability distributions for the nutrient regulation ES potential. The focal objective of the study was of methodological nature: to test the application of a BBN as an integrative modelling approach combining the information from the ES matrix with additional data sets. In the process, both study areas were assessed with a regional differentiation with regard to the predominant landscape types. For both study areas, regional differences could be detected. Furthermore, the results indicate a spatial mismatch between ES demand and supply of the nutrient regulation potential. Land management and agricultural practices seem not to be in harmony with the spatial patterns of the environmental characteristics in the study areas. The assessment on the local scale, which comprised higher resolution input data, emphasized these circumstances even more clearly.
title: Deep Convolutional Neural Networks for Estimating Lens Distortion Parameters
titleType: Other
Creators: name: Lutz, Sebastian
Publisher: name: TU Dublin
Year: 2019

description: In this paper we present a convolutional neural network (CNN) to predict multiple lens distortion parameters from a single input image. Unlike other methods, our network is suitable to create high resolution output as it directly estimates the parameters from the image which then can be used to rectify even very high resolution input images. As our method it is fully automatic, it is suitable for both casual creatives and professional artists. Our results show that our network accurately predicts the lens distortion parameters of high resolution images and corrects the distortions satisfactory.
title: В. Инжинаш. Палата красных слез. Роман. Главы двенадцатая, тринадцатая (перевод со старомонгольского Л. Г. Скородумовой) // MONGOLICA. Caнкт-Петербургский журнал монголоведных исследований, Том XXII, 2019, №1
Creators: name: Скородумова, Лидия Григорьевна
Publisher: name: Издательство "Петербургское востоковедение"
Year: 2019

description: Публикация представляет собой художественный перевод двенадцатой и тринадцатой глав классического монгольского романа "Палата красных слез".
On the convexity of Relativistic Hydrodynamics
Creators: name: Ibáñez, José María
name: Cordero-Carrión, Isabel
name: Martí, José María
name: Miralles, Juan Antonio
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The relativistic hydrodynamic system of equations for a perfect fluid obeying a causal equation of state is hyperbolic (Anile 1989 {\it Relativistic Fluids and Magneto-Fluids} (Cambridge: Cambridge University Press)). In this report, we derive the conditions for this system to be convex in terms of the fundamental derivative of the equation of state (Menikoff and Plohr 1989 {\it Rev. Mod. Phys.} {\bf 61} 75). The classical limit is recovered.
description: 10 pages
AnnoTALE: Bioinformatics tools for identification, annotation, and nomenclature of TALEs from Xanthomonas genomic sequences
Creators: name: Grau, Jan
name: Reschke, Maik
name: Erkes, Annett
name: Streubel, Jana
name: Morgan, Richard D.
name: Wilson, Geoffrey G.
name: Koebnik, Ralf
name: Boch, Jens
Publisher: name: London : Nature Publishing Group
Year: 2016
Subjects: subject: bioinformatics
subject: classification
subject: DNA transcription
subject: gene expression
subject: gene expression regulation
subject: genome
subject: nomenclature
subject: nucleic acid base substitution
subject: transcription initiation
subject: transcription regulation
subject: Xanthomonas
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: Transcription activator-like effectors (TALEs) are virulence factors, produced by the bacterial plant-pathogen Xanthomonas, that function as gene activators inside plant cells. Although the contribution of individual TALEs to infectivity has been shown, the specific roles of most TALEs, and the overall TALE diversity in Xanthomonas spp. is not known. TALEs possess a highly repetitive DNA-binding domain, which is notoriously difficult to sequence. Here, we describe an improved method for characterizing TALE genes by the use of PacBio sequencing. We present 'AnnoTALE', a suite of applications for the analysis and annotation of TALE genes from Xanthomonas genomes, and for grouping similar TALEs into classes. Based on these classes, we propose a unified nomenclature for Xanthomonas TALEs that reveals similarities pointing to related functionalities. This new classification enables us to compare related TALEs and to identify base substitutions responsible for the evolution of TALE specificities.
title: Semantik der Absenz. The Making and Meaning of the Void
Creators: name: Gehring, Ulrike
Publisher: name: University Library Heidelberg
Year: 2016

description: kritische berichte - Zeitschrift für Kunst- und Kulturwissenschaften, Bd. 39, Nr. 2 (2011): kritische berichte, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Bioactive Phenolics from Carthamus lanatus L.
Creators: name: Taskova, Rilka M.
name: Mitova, Maya
name: Mikhova, Bozhanka
name: Duddeck, Helmut
Publisher: name: Berlin : De Gruyter
Year: 2003
Subjects: subject: Biological Activity
subject: Carthamus lanatus
subject: Phenolics
subject: Animals
subject: Artemia
subject: Carthamus
subject: Flavonoids
subject: Molecular Conformation
subject: Molecular Structure
subject: Phenols
subject: Plants, Medicinal
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: Two flavonoid aglycons, eight flavonoid glycosides, chlorogenic acid and syringin were isolated from aerial parts of Carthamus lanatus. Isorhamnetin 3-O-β-D-glucoside and chlorogenic acid were found for the first time in the genus Carthamus and respectively, quercimeritrin, astragalin, kaempferol 3-O-β-D-sophoroside and syringin in the species. The ethyl acetate fraction of the methanol extract exhibited a higher antioxidant activity than the butanol fraction measured by the α,α-diphenyl-β -picrazylhydrazyl (DPPH) free radical scavenging assay. Cytotoxicity and antioxidant activities of the main constituent, luteolin 7-O-β-D-glucoside, were evaluated.
title: Serious Injury and Mortality Determinations for Baleen Whale Stocks along the Gulf of Mexico, United States East Coast, and Atlantic Canadian Provinces, 2012-2016
Creators: name: Henry, Allison
name: Garron, Mendy
name: Morin, David Matthew
name: Ledwell, Wayne
name: Cole, Timothy
Publisher: name: Northeast Fisheries Science Center (U.S.)
Year: 2019

description: Northeast Fisheries Science Center Reference Document 19-13
Die Wechselwirkung von N3F mit Lewis-Säuren und HF. N3F als möglicher Vorläufer für die Synthese von N3+-Salzen
Creators: name: Schatte, G.
name: Willner, H.
Publisher: name: Berlin : De Gruyter
Year: 1991
Subjects: subject: Triazadienyl fluoride
subject: N3F
subject: Lewis acids
subject: N3+Salts
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Triazadienyl fluoride, N3F, forms stable adducts with BF3 and AsF5 at low temperatures, as demonstrated by infrared measurements. The Lewis acids are bonded to the Nα-atom of N3F, as deduced from the data for 15N-isotopically enriched N3F. The basicity of N3F is comparable to that of ethine and ethene, according to the HF stretching frequency of the N3F/HF complex isolated in an argon matrix. Despite the low NF bond energy (< 150 kJ/mol), abstraction of the fluoride ion and formation of an N3+ salt was not possible. The different behavior of N3F and ClN3 towards Lewis acids is discussed.
title: Tänzerin aus Porzellan. Berthold Boeß im Wettstreit mit Gustav Oppel
Creators: name: Glaser, Silvia
Publisher: name: University Library Heidelberg
Year: 2016

description: KulturGut : aus der Forschung des Germanischen Nationalmuseums, Nr. 51 (2016): KulturGut: aus der Forschung des Germanischen Nationalmuseums, Beginn und Erscheinungsfrequenz: Jahr: 2004