cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
New eclipsing binaries with mercury-manganese stars
Creators: name: Kochukhov, O.
name: Labadie-Bartz, J.
name: Khalack, V.
name: Shultz, M. E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Eclipsing binary stars are rare and extremely valuable astrophysical laboratories that make possible precise determination of fundamental stellar parameters. Investigation of early-type chemically peculiar stars in eclipsing binaries provides important information for understanding the origin and evolutionary context of their anomalous surface chemistry. In this study we discuss observations of eclipse variability in six mercury-manganese (HgMn) stars monitored by the TESS satellite. These discoveries double the number of known eclipsing HgMn stars and yield several interesting objects requiring further study. In particular, we confirm eclipses in HD 72208, thereby establishing this object as the longest-period eclipsing HgMn star. Among five other eclipsing binaries, reported here for the first time, HD 36892 and HD 53004 stand out as eccentric systems showing heartbeat variability in addition to eclipses. The latter object has the highest eccentricity among eclipsing HgMn stars and also exhibits tidally induced oscillations. Finally, we find evidence that HD 55776 may be orbited by a white dwarf companion.
description: 5 pages, 5 figures; accepted for publication in MNRAS
Lagartija de Carbonell – Podarcis carbonelli Pérez-Mellado, 1981
Creators: name: Sá-Sousa, Paulo
name: Salvador Milla, Alfredo
Publisher: name: Salvador Milla, Alfredo
Year: 2015

description: Reptiles - Orden Squamata - Familia Lacertidae en la Enciclopedia Virtual de Vertebrados Españoles, http://www.vertebradosibericos.org/. Versiones anteriores: 3-03-2004; 15-12-2004; 14-12-2006; 28-01-2008; 26-08-2009
description: A comprehensive review of the natural history of the Carbonell's wall lizard Podarcis carbonelli in Spain.
Lagartija balear – Podarcis lilfordi (Günther, 1874)
Creators: name: Salvador Milla, Alfredo
Publisher: name: Salvador Milla, Alfredo
Year: 2015

description: Reptiles - Orden Squamata - Familia Lacertidae en la Enciclopedia Virtual de Vertebrados Españoles, http://www.vertebradosibericos.org/. Versiones anteriores: 31-07-2006; 4-02-2008; 3-09-2009
description: A comprehensive review of the natural history of the Lilford's wall lizard Podarcis lilfordi in Spain.
Theoretical investigation of finite size effects at DNA melting
Creators: name: Buyukdagli, Sahin
name: Joyeux, Marc
Publisher: name: arXiv
Year: 2007
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: We investigated how the finiteness of the length of the sequence affects the phase transition that takes place at DNA melting temperature. For this purpose, we modified the Transfer Integral method to adapt it to the calculation of both extensive (partition function, entropy, specific heat, etc) and non-extensive (order parameter and correlation length) thermodynamic quantities of finite sequences with open boundary conditions, and applied the modified procedure to two different dynamical models. We showed that rounding of the transition clearly takes place when the length of the sequence is decreased. We also performed a finite-size scaling analysis of the two models and showed that the singular part of the free energy can indeed be expressed in terms of an homogeneous function. However, both the correlation length and the average separation between paired bases diverge at the melting transition, so that it is no longer clear to which of these two quantities the length of the system should be compared. Moreover, Josephson's identity is satisfied for none of the investigated models, so that the derivation of the characteristic exponents which appear, for example, in the expression of the specific heat, requires some care.
Spatial orientation of the fission fragment intrinsic spins and their correlations
Creators: name: Scamps, Guillaume
name: Abdurrahman, Ibrahim
name: Kafker, Matthew
name: Bulgac, Aurel
name: Stetcu, Ionel
Publisher: name: arXiv
Year: 2023
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: New experimental and theoretical results obtained in 2021 made it acutely clear that more than 80 years after the discovery of nuclear fission we do not understand the generation and dynamics of fission fragment (FF) intrinsic spins well, in particular their magnitudes, their spatial orientation, and their correlations. The magnitude and orientation of the primary FFs have a crucial role in defining the angular distribution and correlation between the emitted prompt neutrons, and subsequent emission of statistical (predominantly E1) and stretched E2 γ-rays, and their correlations with the final fission fragments. Here we present detailed microscopic evaluations of the FF intrinsic spins, for both even- and odd-mass FFs, and of their spatial correlations. These point to a well-defined 3D FF intrinsic spin dynamics, characteristics absent in semi-phenomenological studies, due to the presence of the twisting spin modes, which artificially were suppressed in semi-phenomenological studies.
description: 4 pages, 3 figures
Thermoelectric behaviour of hot collisional and magnetized QCD medium from an effective kinetic theory
Creators: name: Kurian, Manu
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The thermoelectric behaviour of quark-gluon plasma has been studied within the framework of an effective kinetic theory by adopting a quasiparticle model to incorporate the thermal medium effects. The thermoelectric response of the medium has been quantified in terms of the Seebeck coefficient. The dependence of the collisional aspects of the QCD medium on the Seebeck coefficient has been estimated by utilizing relaxation time approximation and Bhatnagar-Gross-Krook collision kernels in the effective Boltzmann equation. The thermoelectric coefficient is seen to depend on the quark chemical potential and collision aspects of the medium. Besides, the thermoelectric effect has been explored in a magnetized medium and the respective transport coefficients, such as magnetic field-dependent Seebeck coefficient and Nernst coefficient, have been estimated. The impacts of hot QCD medium interactions incorporated through the effective model and the magnetic field on the thermoelectric responses of the medium have been observed to be more prominent in the temperature regimes not very far from the transition temperature.
description: 11 pages, 3 figures
title: HiN : Alexander von Humboldt im Netz
Creators: name: Köchy, Kristian
name: Kortum, Gerhard
name: Leitner, Ulrike
name: Lubrich, Oliver
name: Navas Sierra, Jose Alberto
name: Puig-Samper, Miguel Ángel
name: Rebok, Sandra
name: Schwarz, Ingo
Publisher: name: Universitätsverlag Potsdam
Year: 2019

description: Inhalt: - Kristian Köchy: Das Ganze der Natur – Alexander von Humboldt und das romantische Forschungsprogramm - Gerhard Kortum: „Alexander von Humboldt“ als Name für Forschungsschiffe vor dem Hintergrund seiner meereskundlichen Arbeiten - Ulrike Leitner: „Anciennes folies neptuniennes!“ Über das wiedergefundene „Journal du Mexique à Veracruz“ aus den mexikanischen Reisetagebüchern A. v. Humboldts - Oliver Lubrich: „Egipcios por doquier“. Alejandro de Humboldt y su visión ‘orientalista’ de América - Jose Alberto Navas Sierra: Humboldt y el ‘Área de Libre Comercio de las Américas (ALCA)’ – Un ejercicio de ‘ciencia humboldtiana - Miguel Ángel Puig-Samper und Sandra Rebok: Un sabio en la meseta. El viaje de Alejandro de Humboldt a España en 1799 - Ingo Schwarz: Nachruf – Zur Erinnerung an Kurt-R. Biermann
description: HiN : Alexander von Humboldt im Netz ; International Review for Humboldtian Studies, III.2002, 5
Farm Program Tools: Tradeoffs and Interactions
Creators: name: Langley, James
name: Green, Robert
name: Nelson, Fred
name: Fulton, Tom
name: Langley, James
name: Green, Robert
name: Nelson, Fred
name: Fulton, Tom
Publisher: name: Unknown
Year: 1987
Subjects: Agricultural and Food Policy

description: Farm programs can be used to raise income to program participants, but usually at a cost, depending on the tools used to formulate the programs. The key tools--nonrecourse loans, target prices, acreage reduction, and export subsidies--involve inevitable tradeoffs. By changing one program tool at a time, the tradeoffs between program objectives are more clearly recognized. Target prices transfer tax dollars to producers in the form of deficiency payments. Effective loan rates boost income to program participants and reduce direct Government payments at the expense of lost exports, higher food costs to consumers, and higher stock accumulation. Used alone, acreage reduction programs do not very successfully increase income. Export subsidies have little effect on net income to program participants.
$μ\to e γ$ and $τ\to l γ$ decays in the fermion triplet seesaw model
Creators: name: Abada, A.
name: Biggio, C.
name: Bonnet, F.
name: Gavela, M. B.
name: Hambye, T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the framework of the seesaw models with triplets of fermions, we evaluate the decay rates of $μ\to e γ$ and $τ\to l γ$ transitions. We show that although, due to neutrino mass constraints, those rates are in general expected to be well under the present experimental limits, this is not necessarily always the case. Interestingly enough, the observation of one of those decays in planned experiments would nevertheless contradict bounds stemming from present experimental limits on the $μ\to eee$ and $τ\to 3 l$ decay rates. Such detection of radiative decays would therefore imply that there exist sources of lepton flavour violation not associated to triplet fermions.
description: Section on $\mu$-$e$ conversion in nuclei added, version to appear in PRD
Additional file 1 of An interferon-related signature characterizes the whole blood transcriptome profile of insulin-resistant individuals—the CODAM study
Creators: name: Kalafati, Marianthi
name: Kutmon, Martina
name: Evelo, Chris T.
name: van der Kallen, Carla J. H.
name: Schalkwijk, Casper G.
name: Stehouwer, Coen D. A.
name: Consortium, B. I. O. S.
name: Blaak, Ellen E.
name: van Greevenbroek, Marleen M. J.
name: Adriaens, Michiel
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Figure S1-S3.
Topological quantum materials from the viewpoint of chemistry
Creators: name: Kumar, Nitesh
name: Guin, Satya N.
name: Manna, Kaustuv
name: Shekhar, Chandra
name: Felser, Claudia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Topology, a mathematical concept, has recently become a popular and truly transdisciplinary topic encompassing condensed matter physics, solid state chemistry, and materials science. Since there is a direct connection between real space, namely atoms, valence electrons, bonds and orbitals, and reciprocal space, namely bands and Fermi surfaces, via symmetry and topology, classifying topological materials within a single-particle picture is possible. Currently, most materials are classified as trivial insulators, semimetals and metals, or as topological insulators, Dirac and Weyl nodal-line semimetals, and topological metals. The key ingredients for topology are: certain symmetries, the inert pair effect of the outer electrons leading to inversion of the conduction and valence bands, and spin-orbit coupling. This review presents the topological concepts related to solids from the viewpoint of a solid-state chemist, summarizes techniques for growing single crystals, and describes basic physical property measurement techniques to characterize topological materials beyond their structure and provide examples of such materials. Finally, a brief outlook on the impact of topology in other areas of chemistry is provided at the end of the article.
description: Review Article, 28 Figures
New Physics with IceCube
Creators: name: Reynoso, Matias M.
name: Sampayo, Oscar A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: IceCube, a cubic kilometer neutrino telescope will be capable of probing neutrino-nucleon interactions in the ultrahigh energy regime, far beyond the energies reached by colliders. In this article we introduce a new observable that combines several advantages: it only makes use of the upward-going neutrino flux, so that the Earth filters the atmospheric muons, and it is only weakly dependent on the initial astrophysical flux uncertainties.
description: 13 pages, Latex, 5 figures, added references, added content
Aspects of Conformal Gravity and Double Field Theory from a Double Copy Map
Creators: name: Lescano, Eric
name: Menezes, Gabriel
name: Rodríguez, Jesús A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Double Field Theory (DFT) can be constructed as the double copy of a Yang-Mills theory. In this work we extend this statement by including higher-derivative terms. Starting from a four-derivative extension of Yang-Mills whose double copy is known to correspond to a conformal-gravity theory, we obtain a four-derivative theory formulated in double space, which in the pure gravity limit reduces to conformal gravity at quadratic order. This result reveals important aspects for the study of conformal symmetry in the context of DFT through double copy maps.
description: Published version
'The pleasures of merely circulation' : the interpretive anthropology of Clifford Geerts and the 'postmodern' anthropology of James Clifford : a deconstructive reading
Creators: name: Richardson, Joanne
Publisher: name: University of British Columbia
Year: 2011

description: In this dissertation I attempt to explicate Jacques Derrida's strategy of deconstruction and, through a deconstructive reading of Clifford Geertz's interpretive anthropology and James Clifford's 'postmodern' anthropology respectively, to show its relevance to the discipline of anthropology in general. The following is a skeletal outline of how I set about this endeavour. In my Introductory chapter, I attempt to indicate the way in which the notion of logos or presence has dominated Western philosophy from its inception in ancient Greece up to and including the present day. As Derrlda utilizes it, the term •presence' has to do with the assumption of and desire for the existence of a self-certain and self-identical basis for all extant phenomena and is manifested in such notions as truth, meaning, God, self, concept and so on. Because it is always defined as self-sufficient and self-identical, wherever it operates, presence entails the suppression of difference and otherness. In Chapter Two, I offer an explication of Derrida's strategy for exposing and delimiting presence as it manifests itself through and throughout Western conceptuality, paying particular attention to his work on undecidability. Briefly, this has to do with arguing that concepts, as such, are always already originarlly doubled and hence, Aristotelian logic notwithstanding, are both possible (as effects of undecidabllity) and Impossible (as self-sufficient and self-identical ideas). This calls radically into question our assumptions about the nature of conceptuality and indicates the way in which these assumptions ensure the repression of difference and otherness. In Chapter Three, I look at the phenomenological (Husserl) and hermeneutic (esp. Heidegger, Gadamer, Ricoeur) background of contemporary interpretive and •postmodern' anthropology and, in so doing, attempt to show that it is premised upon an assumption of presence. In Chapter Four, I offer a deconstructive reading of certain works by Clifford Geertz and by James Clifford respectively, and attempt to show that their unrecognized dedication to an assumed notion of presence prevents them from seeing the repressive/oppressive nature of their chosen conceptuality. And, finally, in my concluding chapter, I argue that Geertzian interpretive anthropology and Cliffordian 'postmodern' anthropology are two sides of the same old coin and that, with respect to the latter's work, the term 'postmodern' is a misnomer. I further argue that Western conceptuality is, by definition and in principle, both repressive and oppressive and that, this being the case, anthropology must either reexamine and re-evaluate its most basic assumptions or, failing that, resign itself to perpetuating the inherited legacy of a ruthless metaphysics.
The First Stars in The Universe
Creators: name: Naoz, Smadar
name: Noter, Shay
name: Barkana, Rennan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Large telescopes have allowed astronomers to observe galaxies that formed as early as 850 million years after the Big Bang. We predict when the first star that astronomers can observe formed in the universe, accounting for the first time for the size of the universe and for three essential ingredients: the light travel time from distant galaxies, Poisson and density fluctuations on all scales, and the effect of very early cosmic history on galaxy formation. We find that the first observable star is most likely to have formed 30 million years after the Big Bang (at redshift 65), much earlier than previously expected. Also, the first galaxy as massive as our own Milky Way likely formed when the universe was only 400 Myr old (at redshift 11). We also show that significant modifications are required in current methods of numerically simulating the formation of galaxies at redshift 20 and above.
description: 5 pages, 4 figures, MNRAS Letters, revised version
psc2code: Denoising Code Extraction from Programming Screencasts
Creators: name: Bao, Lingfeng
name: Xing, Zhenchang
name: Xia, Xin
name: Lo, David
name: Wu, Minghui
name: Yang, Xiaohu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: In this paper, we propose an approach named psc2code to denoise the process of extracting source code from programming screencasts. First, psc2code leverages the Convolutional Neural Network based image classification to remove non-code and noisy-code frames. Then, psc2code performs edge detection and clustering-based image segmentation to detect sub-windows in a code frame, and based on the detected sub-windows, it identifies and crops the screen region that is most likely to be a code editor. Finally, psc2code calls the API of a professional OCR tool to extract source code from the cropped code regions and leverages the OCRed cross-frame information in the programming screencast and the statistical language model of a large corpus of source code to correct errors in the OCRed source code. We conduct an experiment on 1,142 programming screencasts from YouTube. We find that our CNN-based image classification technique can effectively remove the non-code and noisy-code frames, which achieves an F1-score of 0.95 on the valid code frames. Based on the source code denoised by psc2code, we implement two applications: 1) a programming screencast search engine; 2) an interaction-enhanced programming screencast watching tool. Based on the source code extracted from the 1,142 collected programming screencasts, our experiments show that our programming screencast search engine achieves the precision@5, 10, and 20 of 0.93, 0.81, and 0.63, respectively.
description: pre-print TOSEM paper for ICSE 2021
The optical spectral slope variability of 17 blazars
Creators: name: Hu, Shao Ming
name: Zhao, G.
name: Guo, H. Y.
name: Zhang, X.
name: Zheng, Y. G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Many quasi-simultaneous optical observations of 17 blazars are obtained from previous papers published over the last 19 years in order to investigate the spectral slope variability and understand the radiation mechanism of blazars. The long-period dereddened optical spectral slopes are calculated. We analyse the average spectral slope distribution, which suggests that the spectra of flat spectrum radio quasars (FSRQs) and high energy peaked BL Lac objects (HBLs) are probably deformed by other emission components. The average spectral slopes of low energy peaked BL Lac objects(LBLs), which scatter around 1.5, show a good accordance with the synchrotron self-Compton (SSC) loss-dominated model. We present and discuss the variability between the spectral slope and optical luminosity. The spectra of all HBLs and LBLs get flatter when they turn brighter, while for FSRQs this trend does not exist or may even be reversed. This phenomenon may imply that there is a thermal contribution to the optical spectrum for FSRQs. For the FSRQ 1156+295, there is a hint that the slope gets flatter at both the brightest and faintest states. Our result shows that three subclasses locate in different regions in the pattern of slope variability indicator versus average spectral slope. The relativistic jet mechanism is supported by the significant correlation between the optical Doppler factor and the average spectral slope.
description: 17 pages, 7 figures, Accepted by MNRAS
On a general approach to some problems of approximation of operators
Creators: name: Kovalenko, Oleg
Publisher: name: arXiv
Year: 2023
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 26D10, 41A44

description: In the article we propose a general scheme for solutions of some approximation problems under a rather general setting. We illustrate the application of the proposed scheme by a series of examples, in particular we show that many results in the area of Ostrowski type inequalities can be obtained by standard arguments.
A New Numerical Method for Solving Radiation Driven Winds from Hot Stars
Creators: name: Cure, Michel
name: Rial, Diego F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a general method for solving the non--linear differential equation of monotonically increasing steady--state radiation driven winds. We graphically identify all the singular points before transforming the momentum equation to a system of differential equations with all the gradients explicitly give. This permits a topological classification of all singular points and to calculate the maximum and minimum mass--loss of the wind. We use our method to analyse for the first time the topology of the non--rotating frozen in ionisation m--CAK wind, with the inclusion of the finite disk correction factor and find up to 4 singular points, three of the x--type and one attractor--type. The only singular point (and solution passing through) that satisfies the boundary condition at the stellar surface is the standard m--CAK singular point.
description: Accepted for publication in Astronomische Nachrichten / Astronomical Notes
Variational quantum compiling with double Q-learning
Creators: name: He, Zhimin
name: Li, Lvzhou
name: Zheng, Shenggen
name: Li, Yongyao
name: Situ, Haozhen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Quantum compiling aims to construct a quantum circuit V by quantum gates drawn from a native gate alphabet, which is functionally equivalent to the target unitary U. It is a crucial stage for the running of quantum algorithms on noisy intermediate-scale quantum (NISQ) devices. However, the space for structure exploration of quantum circuit is enormous, resulting in the requirement of human expertise, hundreds of experimentations or modifications from existing quantum circuits. In this paper, we propose a variational quantum compiling (VQC) algorithm based on reinforcement learning (RL), in order to automatically design the structure of quantum circuit for VQC with no human intervention. An agent is trained to sequentially select quantum gates from the native gate alphabet and the qubits they act on by double Q-learning with ε-greedy exploration strategy and experience replay. At first, the agent randomly explores a number of quantum circuits with different structures, and then iteratively discovers structures with higher performance on the learning task. Simulation results show that the proposed method can make exact compilations with less quantum gates compared to previous VQC algorithms. It can reduce the errors of quantum algorithms due to decoherence process and gate noise in NISQ devices, and enable quantum algorithms especially for complex algorithms to be executed within coherence time.
description: 21 pages, 10 figures
Determining the ability for universal quantum computing: Testing controllability via dimensional expressivity
Creators: name: Gago-Encinas, Fernando
name: Hartung, Tobias
name: Reich, Daniel M.
name: Jansen, Karl
name: Koch, Christiane P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Operator controllability refers to the ability to implement an arbitrary unitary in SU(N) and is a prerequisite for universal quantum computing. Controllability tests can be used in the design of quantum devices to reduce the number of external controls. Their practical use is hampered, however, by the exponential scaling of their numerical effort with the number of qubits. Here, we devise a hybrid quantum-classical algorithm based on a parametrized quantum circuit. We show that controllability is linked to the number of independent parameters, which can be obtained by dimensional expressivity analysis. We exemplify the application of the algorithm to qubit arrays with nearest-neighbour couplings and local controls. Our work provides a systematic approach to the resource-efficient design of quantum chips.
description: 20 pages, 9 figures, 2 tables, 2 algorithms
Conformal Properties of an Evaporating Black Hole Model
Creators: name: Lübbe, Christian
name: Tod, Paul
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We use a new, conformally-invariant method of analysis to test incomplete null geodesics approaching the singularity in a model of an evaporating black hole for the possibility of extensions of the conformal metric. In general, a local conformal extension is possible from the future but not from the past.
Narrow-width approximation limitations
Creators: name: Kauer, N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The quality of the narrow-width approximation is examined for partonic and convolved cross sections of sample processes. By comparison with accurate predictions significant limitations are revealed.
description: 4 pages, 10 figures; refs. reordered, version to be published in Phys. Lett. B
Contact Zones and Elsewhere Fields: The Poetics and Politics of Environmental Sound Arts
Creators: name: Peter Wright, Mark
Publisher: name: University of the Arts London
Year: 2024
Subjects: classificationCode: 369999
subject: Other creative arts and writing not elsewhere classified

description: Contact Zones and Elsewhere Fields: The Poetics and Politics of Environmental Sound ArtsPhD Research Degree Mark Peter Wright Completed 2015A digital copy of this thesis is available from the UAL Research Online repository.
ast2vec: Utilizing Recursive Neural Encodings of Python Programs
Creators: name: Paaßen, Benjamin
name: McBroom, Jessica
name: Jeffries, Bryn
name: Koprinska, Irena
name: Yacef, Kalina
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Computers and Society (cs.CY)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: Educational datamining involves the application of datamining techniques to student activity. However, in the context of computer programming, many datamining techniques can not be applied because they expect vector-shaped input whereas computer programs have the form of syntax trees. In this paper, we present ast2vec, a neural network that maps Python syntax trees to vectors and back, thereby facilitating datamining on computer programs as well as the interpretation of datamining results. Ast2vec has been trained on almost half a million programs of novice programmers and is designed to be applied across learning tasks without re-training, meaning that users can apply it without any need for (additional) deep learning. We demonstrate the generality of ast2vec in three settings: First, we provide example analyses using ast2vec on a classroom-sized dataset, involving visualization, student motion analysis, clustering, and outlier detection, including two novel analyses, namely a progress-variance-projection and a dynamical systems analysis. Second, we consider the ability of ast2vec to recover the original syntax tree from its vector representation on the training data and two further large-scale programming datasets. Finally, we evaluate the predictive capability of a simple linear regression on top of ast2vec, obtaining similar results to techniques that work directly on syntax trees. We hope ast2vec can augment the educational datamining toolbelt by making analyses of computer programs easier, richer, and more efficient.
description: Under consideration at the Journal of Educational Datamining
Additional file 1 of Functional screening of a human saliva metagenomic DNA reveal novel resistance genes against sodium hypochlorite and chlorhexidine
Creators: name: Wigand, Johannes
name: Tansirichaiya, Supathep
name: Winje, Endre
name: Al-Haroni, Mohammed
Publisher: name: figshare
Year: 2021
Subjects: subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Hematology
subject: 60506 Virology

description: Additional file 1. Primers used in this study.
Tracing the Total Stellar Mass and Star Formation of High-Redshift Protoclusters
Creators: name: Popescu, Roxana
name: Pope, Alexandra
name: Lee, Kyoung-Soo
name: Alberts, Stacey
name: Chiang, Yi-Kuan
name: Lee, Sowon
name: Brodwin, Mark
name: McKinney, Jed
name: Ramakrishnan, Vandana
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: As the progenitors of present-day galaxy clusters, protoclusters are excellent laboratories to study galaxy evolution. Since existing observations of protoclusters are limited to the detected constituent galaxies at UV and/or infrared wavelengths, the details of how typical galaxies grow in these young, pre-virialized structures remain uncertain. We measure the total stellar mass and star formation within protoclusters, including the contribution from faint undetected members by performing a stacking analysis of 211 $z=2-4$ protoclusters selected as Planck cold sources. We stack WISE and Herschel/SPIRE images to measure the angular size and the spectral energy distribution of the integrated light from the protoclusters. The fluxes of protoclusters selected as Planck cold sources can be contaminated by line of sight interlopers. Using the WebSky simulation, we estimate that a single protocluster contributes $33\pm15$% of the flux of a Planck cold source on average. After this correction, we obtain a total star formation rate of $7.3\pm3.2 \times 10^3\ M_{\odot} {\rm yr}^{-1}$ and a total stellar mass of $4.9\pm 2.2\times 10^{12}\ M_{\odot}$. Our results indicate that protoclusters have, on average, 2x more star formation and 4x more stellar mass than the total contribution from individually-detected galaxies in spectroscopically-confirmed protoclusters. This suggests that much of the total flux within $z=2-4$ protoclusters comes from galaxies with luminosities lower than the detection limit of SPIRE ($L_{IR} < 3 \times 10^{12} L_{\odot}$). Lastly, we find that protoclusters subtend a half-light radius of 2.8' (4.2-5.8 cMpc) which is consistent with simulations.
description: Published in ApJ
Lagarto gigante de El Hierro – Gallotia simonyi (Steindachner, 1889)
Creators: name: Salvador Milla, Alfredo
Publisher: name: Salvador Milla, Alfredo
Year: 2015

description: Reptiles - Orden Squamata - Familia Lacertidae en la Enciclopedia Virtual de Vertebrados Españoles, http://www.vertebradosibericos.org/. Versiones anteriores: 20-06-2007; 2-10-2009; 11-02-2014
description: A comprehensive review of the natural history of the El Hierro Giant Lizard Gallotia simonyi in Spain.
Lagarto canario moteado – Gallotia intermedia Hernández, Nogales y Martín, 2000
Creators: name: Salvador Milla, Alfredo
Publisher: name: Salvador Milla, Alfredo
Year: 2015

description: Reptiles - Orden Squamata - Familia Lacertidae en la Enciclopedia Virtual de Vertebrados Españoles, http://www.vertebradosibericos.org/. Versiones anteriores: 13-06-2005; 15-03-2007; 26-03-2007; 21-05-2007; 19-10-2009
description: A comprehensive review of the natural history of the Canarian spotted lizard Gallotia intermedia in Spain.
hankl: A lightweight Python implementation of the FFTLog algorithm for Cosmology
Creators: name: Karamanis, Minas
name: Beutler, Florian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We introduce hankl, a lightweight Python implementation of the FFTLog algorithm for Cosmology. The FFTLog algorithm is an extension of the Fast Fourier Transform (FFT) for logarithmically spaced periodic sequences. It can be used to efficiently compute Hankel transformations, which are paramount for many modern cosmological analyses that are based on the power spectrum or the 2-point correlation function multipoles. The code is well-tested, open source, and publicly available.
description: 6 pages, 2 figures; Code available at https://github.com/minaskar/hankl
Additional file 2 of Functional screening of a human saliva metagenomic DNA reveal novel resistance genes against sodium hypochlorite and chlorhexidine
Creators: name: Wigand, Johannes
name: Tansirichaiya, Supathep
name: Winje, Endre
name: Al-Haroni, Mohammed
Publisher: name: figshare
Year: 2021
Subjects: subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Hematology
subject: 60506 Virology

description: Additional file 2. Bacterial strains and plasmids used in the subcloning of putative chlorhexidine and sodium hypochlorite resistance genes.
The Oxygen Bottleneck for Technospheres
Creators: name: Balbi, Amedeo
name: Frank, Adam
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences

description: As oxygen is essential for respiration and metabolism for multicellular organisms on Earth, its presence may be crucial for the development of a complex biosphere on other planets. And because life itself, through photosynthesis, contributed to creating our oxygen-rich atmosphere, oxygen has long been considered as a possible biosignature. Here we consider the relationship between atmospheric oxygen and the development of technology. We argue that only planets with substantial oxygen partial pressure ($p_{\rm O_2}$) will be capable of developing advanced technospheres and hence technosignatures that we can detect. But open-air combustion (needed, for example, for metallurgy), is possible only in Earth-like atmospheres when $p_{\rm O_2}\ge 18\%$. This limit is higher than the one needed to sustain a complex biosphere and multicellular organisms. We further review other possible planetary atmospheric compositions and conclude that oxygen is the most likely candidate for the evolution of technological species. Thus, the presence of $p_{\rm O_2}\ge 18\%$ in exoplanet atmospheres may represent a contextual prior required for the planning and interpretation of technosignature searches.
description: 13 pages, 2 figures. Updated to match version published in Nature Astronomy (2023)
The equation of state of partially ionized hydrogen and deuterium plasma revisited
Creators: name: Filinov, A. V.
name: Bonitz, M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We present novel first-principle fermionic path integral Monte Carlo (PIMC) simulation results for a dense partially ionized hydrogen (deuterium) plasma, for temperatures in the range $15,000$K $\leq T \leq 400,000$K and densities $7 \cdot 10^{-7}$g/cm$^{3}\leq ρ_H \leq 0.085$ g/cm$^{3}$ ($1.4 \cdot 10^{-6}$g/cm$^{3}\leq ρ_D \leq 0.17$ g/cm$^{3}$), corresponding to $100\geq r_s\geq 2$, where $r_s=\bar r/a_B$ is the ratio of the mean interparticle distance to the Bohr radius. These simulations are based on the fermionic propagator PIMC (FP-PIMC) approach in the grand canonical ensemble [A. Filinov \textit{et al.}, Contrib. Plasma Phys. \textbf{61}, e202100112 (2021)] and fully account for correlation and quantum degeneracy and spin effects. For the application to hydrogen and deuterium, we develop a combination of the fourth-order factorization and the pair product ansatz for the density matrix. Moreover, we avoid the fixed node approximation that may lead to uncontrolled errors in restricted PIMC (RPIMC). Our results allow us to critically re-evaluate the accuracy of the RPIMC simulations for hydrogen by Hu \textit{et al.} [Phys. Rev. B \textbf{84}, 224109 (2011)] and of various chemical models. The deviations are generally found to be small, but for the lowest temperature, $T=15,640$~K they reach several percent. We present detailed tables with our first principles results for the pressure and energy isotherms.
CommAID: Visual Analytics for Communication Analysis through Interactive Dynamics Modeling
Creators: name: Fischer, Maximilian T.
name: Seebacher, Daniel
name: Sevastjanova, Rita
name: Keim, Daniel A.
name: El-Assady, Mennatallah
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Communication consists of both meta-information as well as content. Currently, the automated analysis of such data often focuses either on the network aspects via social network analysis or on the content, utilizing methods from text-mining. However, the first category of approaches does not leverage the rich content information, while the latter ignores the conversation environment and the temporal evolution, as evident in the meta-information. In contradiction to communication research, which stresses the importance of a holistic approach, both aspects are rarely applied simultaneously, and consequently, their combination has not yet received enough attention in automated analysis systems. In this work, we aim to address this challenge by discussing the difficulties and design decisions of such a path as well as contribute CommAID, a blueprint for a holistic strategy to communication analysis. It features an integrated visual analytics design to analyze communication networks through dynamics modeling, semantic pattern retrieval, and a user-adaptable and problem-specific machine learning-based retrieval system. An interactive multi-level matrix-based visualization facilitates a focused analysis of both network and content using inline visuals supporting cross-checks and reducing context switches. We evaluate our approach in both a case study and through formative evaluation with eight law enforcement experts using a real-world communication corpus. Results show that our solution surpasses existing techniques in terms of integration level and applicability. With this contribution, we aim to pave the path for a more holistic approach to communication analysis.
description: 12 pages, 7 figures, Computer Graphics Forum 2021 (pre-peer reviewed version)
Additional file 3 of Functional screening of a human saliva metagenomic DNA reveal novel resistance genes against sodium hypochlorite and chlorhexidine
Creators: name: Wigand, Johannes
name: Tansirichaiya, Supathep
name: Winje, Endre
name: Al-Haroni, Mohammed
Publisher: name: figshare
Year: 2021
Subjects: subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Hematology
subject: 60506 Virology

description: Additional file 3. Estimation of the average insert size of the constructed human oral metagenomic library.
Deformation Quantization of Confined Systems
Creators: name: Dias, Nuno Costa
name: Prata, Joao Nuno
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The Weyl-Wigner formulation of quantum confined systems poses several interesting problems. The energy stargenvalue equation, as well as the dynamical equation does not display the expected solutions. In this paper we review some previous results in the subject and add some new contributions. We reformulate the confined energy eigenvalue equation by adding to the Hamiltonian a new (distributional) boundary potential. The new Hamiltonian is proved to be globally defined and self-adjoint. Moreover, it yields the correct Weyl-Wigner formulation of the confined system.
description: 6 pages, Latex file, Presented by N.C. Dias at the Workshop on Advances in Foundations of Quantum Mechanics and Quantum Information with atoms and photons, 2-5 May 2006, Turin, Italy
Lagarto gigante de La Palma - Gallotia auaritae Mateo, García Márquez, López Jurado y Barahona, 2001
Creators: name: Mateo, José Antonio
Publisher: name: Salvador Milla, Alfredo
Year: 2009

description: Reptiles - Orden Squamata - Familia Lacertidae en la Enciclopedia Virtual de Vertebrados Españoles, http://www.vertebradosibericos.org/.
description: A comprehensive review of the natural history of the La Palma Giant Lizard Gallotia auaritae in Spain.
Glaube(n) im Disput. Neuere Forschungen zu den altgläubigen Kontroversisten des Reformationszeitalters, hg. v. Karl-Heinz Braun / Wilbirgis Klaiber / Christoph Moos
Creators: name: Häberlein, Mark
Publisher: name: Theologische Revue
Year: 2021

description: Theologische Revue, Bd. 117 (2021): Februar
title: De quelques mobilités et circulations dans les aires hispanique et hispano-américaine
Publisher: name: Université Toulouse - Jean Jaurès
Year: 2024

description: La marche – ou le mouvement –, vitale pour l’homme primitif, devient une des premières hiérophanies ou expressions du divin pour l’être humain, au même titre que le soleil, l’eau ou le feu. Voyages, mobilités, circulations n’en finissent pas de proposer des variations notionnelles, spatiales et temporelles au point de fournir un champ trans et inter disciplinaire de premier choix.
Supermassive black holes in the Sbc spiral galaxies NGC 3310, NGC 4303 and NGC 4258
Creators: name: Pastorini, Guia
name: Marconi, Alessandro
name: Capetti, Alessandro
name: Axon, David J.
name: Alonso-Herrero, Almudena
name: Atkinson, John
name: Batcheldor, Dan
name: Carollo, C. Marcella
name: Collett, James
name: Dressel, Linda
name: Hughes, Mark A.
name: Macchetto, Duccio
name: Maciejewski, Witold
name: Sparks, William
name: van der Marel, Roeland
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present new Space Telescope Imaging Spectrograph (STIS) observations of three spiral galaxies, NGC 4303, NGC 3310 and NGC 4258. The bright optical emission lines H$α$ $λ$ $6564 Å$, [NII] $λ$$λ$ $6549,6585 Å$ and [SII] $λ$$λ$ $ 6718,6732 Å$ were used to study the kinematics of the ionized gas in the nuclear region of each galaxy with a $\sim 0.07\arcsec$ spatial resolution. In NGC 3310, the observed gas kinematics is well matched by a circularly rotating disk model but we are only able to set an upper limit to the BH mass which, taking into account the allowed disk inclinations, varies in the range $5.0 \times 10^{6} - 4.2 \times 10^{7} M_{\odot}$ at the 95% confidence level. In NGC 4303 the kinematical data require the presence of a BH with mass $M_{BH}=(5.0)^{+0.87}_{-2.26}\times 10^{6}M_{\odot}$ (for a disk inclination $i=70$ deg).In NGC 4258, the observed kinematics require the presence of a black hole with $M_{BH}= (7.9)^{+6.2}_{-3.5} \times 10^{7}M_{\odot}$ ($i=60$ deg). This result is in good agreement with the published value $(3.9 \pm 0.1) \times 10^{7} M_{\odot}$, derived from $H_{2}O$-maser observations. Our attempt at measuring BH masses in these 3 late type Sbc spiral galaxies has shown that these measurements are very challenging and at the limit of the highest spatial resolution currently available. Nonetheless our estimates are in good agreement with the scaling relations between black holes and their host spheroids suggesting that (i) they are reliable and (ii) black holes in spiral galaxies follows the same scaling relations as those in more massive early-type galaxies. A crucial test for the gas kinematical method, the correct recovery of the known BH mass in NGC 4258, has been successful. [abridged]
description: 24 pages, 21 figures, A&A in press