cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ontology Alignment using Biologically-inspired Optimisation Algorithms
Creators: name: Bock, Jürgen
Publisher: name: Karlsruhe
Year: 2012
Subjects: Ontology Alignment
Ontology Matching
Particle Swarm Optimisation
Evolutionary Algorithms
Cloud Computing

description: Identifying overlaps between ontologies is a problem tackled by the discipline of ontology alignment. This thesis presents an evolutionary algorithm and a particle swarm optimisation algorithm for aligning ontologies. The application of these biologically-inspired optimisation techniques demonstrates improved scalability, flexibility, taking account of global alignment constraints, and anytime behaviour.
Relic Antineutrino Capture on 163-Ho decaying Nuclei
Creators: name: Lusignoli, Maurizio
name: Vignati, Marco
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The electron capture decay of the isotope 163-Ho has been proposed since a long time as a candidate for measuring the electron neutrino mass and recently the interest on this idea has been renewed. In this paper we note that a direct observation of the cosmic antineutrino background could be made using a target made of this isotope. We further discuss the requests for an experiment aiming to obtain this result.
description: 9 pages, 3 figures. Minor modifications. Further discussion and references added. Accepted for publication in Physics Letters B
Branching ratios, forward-backward asymmetries and angular distributions of $B\to K_2^*l^+l^-$ in the standard model and new physics scenarios
Creators: name: Li, Run-Hui
name: Lü, Cai-Dian
name: Wang, Wei
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze the $B\to K_2^*(\to Kπ)l^+l^-$ (with $l=e,μ,τ$) decay in the standard model and two new physics scenarios: vector-like quark model and family non-universal $Z'$ model. We derive its differential angular distributions, using the recently calculated form factors in the perturbative QCD approach. Branching ratios, polarizations, forward-backward asymmetries and transversity amplitudes are predicted, from which we find a promising prospective to observe this channel on the future experiment. We also update the constraints on effective Wilson coefficients and/or free parameters in these two new physics scenarios by making use of the experimental data of $B\to K^*l^+l^-$ and $b\to sl^+l^-$. Their impact on $B\to K_2^*l^+l^-$ is subsequently explored and in particular the zero-crossing point for the forward-backward asymmetry in these new physics scenarios can sizably deviate from the SM scenario. In addition we also generalize the analysis to a similar mode $B_s\to f_2'(1525)(\to K^+K^-) l^+l^-$.
description: 21 pages, 9 figures, accepted for publication in Phys. Rev. D
Thermodynamics and Instabilities of a Strongly Coupled Anisotropic Plasma
Creators: name: Mateos, David
name: Trancanelli, Diego
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We extend our analysis of a IIB supergravity solution dual to a spatially anisotropic finite-temperature N=4 super Yang-Mills plasma. The solution is static, possesses an anisotropic horizon, and is completely regular. The full geometry can be viewed as a renormalization group flow from an AdS geometry in the ultraviolet to a Lifshitz-like geometry in the infrared. The anisotropy can be equivalently understood as resulting from a position-dependent theta-term or from a non-zero number density of dissolved D7-branes. The holographic stress tensor is conserved and anisotropic. The presence of a conformal anomaly plays an important role in the thermodynamics. The phase diagram exhibits homogeneous and inhomogeneous (i.e. mixed) phases. In some regions the homogeneous phase displays instabilities reminiscent of those of weakly coupled plasmas. We comment on similarities with QCD at finite baryon density and with the phenomenon of cavitation.
description: 62 pages, 13 figures; v2: typos fixed, added references
title: The voice of science: Ideology, Sherlock Holmes, and the Strand Magazine
Creators: name: Cranfield, Jonathan L.
Publisher: name: University of Kent
Year: 2022

description: This thesis uses The Strand Magazine and Arthur Conan Doyle's Sherlock Holmes stories to examine the different ways in which science and ideology interacted in popular culture between 1891 and 1930. It is interested in the relationship between high and low cultures and the different experiences of the fin-de-siecle and modernity that they betray. It attempts to reconstruct an epistemology of scientific knowledge from 'the artefacts of low culture' and challenges prevailing critical attitudes in periodical criticism and Holmesian criticism. The methodology is derived from a mixture of Marxist literary criticism, ideology theory and the history of science in the belief that attitudes from all three critical traditions are necessary to properly unpack the culturally-embedded nature of periodicals. It plots the relationship between scientific and popular discourses and examines the different ways in which fiction was able to ideologically commodify scientific knowledge and incorporate it into everyday representations of the real world. The thesis is split into four main sections that analyse, respectively, class relations in the 1890s, scientific articles after the turn of the century, depictions of the male body in the aftermath of the Second Boer War and the effect of the onset of a knowledge economy of traditional genre fiction between 1913 and 1930.
Parametric Study of Full Precast Concrete Deck Slabs Using Nonlinear Finite Element Analysis
Creators: name: Hadeed, Reem S
Publisher: name: University of Illinois at Chicago
Year: 2020
Subjects: Uncategorized

description: When bridges need rehabilitation, they can be totally replaced, or they can be repaired using cast in place concrete or precast concrete. This researcher used ANSYS® Mechanical Pro APDL Release 18.2 to perform a nonlinear finite element analysis (FEA) of full depth precast concrete bridge deck slabs. Using precast concrete reduces the time traffic flow is disrupted and provides a durable deck. Steel bolts placed in shear pockets connect the precast concrete with the steel beam, resulting in a full composite action. It is of particular knowledge in this kind of connection to obtain efficiency in the placement of shear stud in pockets, either spaced 4 feet (1219 mm) or as the design requires. This parametric study examined the effects of pocket spacing and the number of shear studs per pocket. The results indicated the horizontal shear strength increased in relation to the number of pockets in simply support and continuous span models. The load deflection curve and slippage value has been recorded and compared with the experimental test by using a nonlinear finite element analysis (FEA). In addition, this study developed the optimal design solution and examined the placement of post-tensioned along the span, looking for the optimal locations for various lengths of spans. The analysis sought to find the minimum cost for construction as well as compromise solutions for selected single objective functions. Studies provided a better understanding of the issues and parameters in this bridge design type and the use of the design program, DCALC, can be useful to expedite the design potentially resulting.
The Expanding Zoo of Calabi-Yau Threefolds
Creators: name: Davies, Rhys
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: This is a short review of recent constructions of new Calabi-Yau threefolds with small Hodge numbers and/or non-trivial fundamental group, which are of particular interest for model-building in the context of heterotic string theory. The two main tools are topological transitions and taking quotients by actions of discrete groups. Both of these techniques can produce new manifolds from existing ones, and they have been used to bring many new specimens to the previously sparse corner of the Calabi-Yau zoo where both Hodge numbers are small. Two new manifolds are also obtained here from hyperconifold transitions, including the first example with fundamental group S3, the smallest non-Abelian group.
description: 24 pages, PDFLaTeX. To be published in the special issue "Computational Algebraic Geometry in String and Gauge Theory" of Advances in High Energy Physics. v2: Added reference, and data for four new manifolds constructed therein
Intersection of Ubuntu pedagogy and social justice: transforming South African higher education
Creators: name: Ngubane, Nomalungelo I.
name: Makua, Manyane
Publisher: name: Mangosuthu University of Technology (MUT)
Year: 2022
Subjects: subject: 130103 Higher Education
subject: FOS: Educational sciences

description: Universities, globally, and in South Africa, continue to be confronted with demands for transformation, humanisation of pedagogical practices and to embrace social justice. Aim: In this article, we bring to the surface possibilities of Ubuntu pedagogy within a social justice framework. We intersect Collective Fingers Theory and Social Justice Theory to propose the notion of Ubuntu pedagogy, which draws from African philosophy of Ubuntu. We argue that Ubuntu pedagogy provides an alternation to the current pedagogies that draw from European theories for teaching and learning in the South African higher education context. We put forward that, Ubuntu pedagogy, when embraced with understanding and dignity it deserves, has the potential, firstly, of initiating students from other cultures other than African cultures to the values of Ubuntu and, secondly, of reconnecting students with their values and cultures, but it has a capacity to cultivate social justice values of equity, recognition and fair participation amongst students from diverse social backgrounds. Setting: South African Higher Education. Methodology: The authors draw from literature to position the article within Ubuntu philosophical framework and social justice lenses. Themes emerging from literature are as follows: Intersection of Ubuntu philosophy and social justice, Ubuntu pedagogy and transformation in higher education and guiding principles for possible implementation of Ubuntu pedagogy. Results: At the intersection of Ubuntu pedagogy and social justice, classroom practices are designed to respond to students’ cultural competencies and to embrace all linguistic repertoires that students bring to the classroom for learning. Students are treated equally and with dignity and respect regardless of their social backgrounds. Conclusion: We argue that higher education classrooms in post-apartheid South Africa should enable equal access, equity and inclusivity for all students. We therefore recommend Ubuntu pedagogy as a culturally and socially just pedagogy for transformative higher education classrooms. This article contributes to the continuing dialogues about transformative pedagogies, decolonisation and social justice in South African higher education.
Fallback Supernovae: A Possible Origin of Peculiar Supernovae with Extremely Low Explosion Energies
Creators: name: Moriya, Takashi
name: Tominaga, Nozomu
name: Tanaka, Masaomi
name: Nomoto, Ken'ichi
name: Sauer, Daniel N.
name: Mazzali, Paolo A.
name: Maeda, Keiichi
name: Suzuki, Tomoharu
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We perform hydrodynamical calculations of core-collapse supernovae (SNe) with low explosion energies. These SNe do not have enough energy to eject the whole progenitor and most of the progenitor falls back to the central remnant. We show that such fallback SNe can have a variety of light curves (LCs) but their photospheric velocities can only have some limited values with lower limits. We also perform calculations of nucleosynthesis and LCs of several fallback SN model, and find that a fallback SN from the progenitor with a main-sequence mass of 13 Msun can account for the properties of the peculiar Type Ia supernova SN 2008ha. The kinetic energy and ejecta mass of the model are 1.2*10^{48} erg and 0.074 Msun, respectively, and the ejected 56Ni mass is 0.003 Msun. Thus, SN 2008ha can be a core-collapse SN with a large amount of fallback. We also suggest that SN 2008ha could have been accompanied with long gamma-ray bursts and long gamma-ray bursts without associated SNe may be accompanied with very faint SNe with significant amount of fallback which are similar to SN 2008ha.
description: 9 pages, 11 figures, 2 tables, accepted by The Astrophysical Journal, proofed and some references added in v2
Group theoretic structures in the estimation of an unknown unitary transformation
Creators: name: Chiribella, G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: This paper presents a series of general results about the optimal estimation of physical transformations in a given symmetry group. In particular, it is shown how the different symmetries of the problem determine different properties of the optimal estimation strategy. The paper also contains a discussion about the role of entanglement between the representation and multiplicity spaces and about the optimality of square-root measurements.
description: 15 pages, lecture given at The XXVIII International Colloquium on Group-Theoretical Methods in Physics, 26-30 July 2010, Newcastle upon Tyne (UK)
title: IAA_2339II
Creators: name: Théa Poullain
name: Galinand, Cyrille
name: Université Paris1 Panthéon-Sorbonne
Publisher: name: Archeovision
Year: 2022
Subjects: subject: synagogue
subject: femme
subject: plâtre
subject: yeux bandés
subject: strasbourg
subject: orignal

description: femmex au yeau x bandés, platre, orignal a la synagogue de strasbourg.
description: 1 fichier 3D (ply), 127 fichiers image (jpg)
Intense Internal and External Fluorescence as Solar Cells Approach the Shockley-Queisser Efficiency Limit
Creators: name: Miller, Owen D.
name: Yablonovitch, Eli
name: Kurtz, Sarah R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Absorbed sunlight in a solar cell produces electrons and holes. But, at the open circuit condition, the carriers have no place to go. They build up in density and, ideally, they emit external fluorescence that exactly balances the incoming sunlight. Any additional non-radiative recombination impairs the carrier density buildup, limiting the open-circuit voltage. At open-circuit, efficient external fluorescence is an indicator of low internal optical losses. Thus efficient external fluorescence is, counter-intuitively, a necessity for approaching the Shockley-Queisser efficiency limit. A great Solar Cell also needs to be a great Light Emitting Diode. Owing to the narrow escape cone for light, efficient external emission requires repeated attempts, and demands an internal luminescence efficiency >>90%.
Sensorimotor loop delays in the control of human stance
Creators: name: Rasman, Brandon Gerald
Publisher: name: University of British Columbia
Year: 2017

description: Maintaining upright stance involves a time-critical process in which the central nervous system monitors postural orientation and modulates muscle activity accordingly. Visual, vestibular and somatosensory systems detect body motion that the balance controller utilizes to update standing control. The time delays between motor output and the resulting sensory feedback are expected and likely accommodated for. Consequently, we perceive whole-body movement as being a consequence of our own actions. Balance control, however, also involves processes that do not rely on conscious perception, allowing us to maintain standing balance almost effortlessly. Recent studies have demonstrated that both the perception and vestibular control of balance are modulated when sensory signals of whole-body movement do not match self-generated ankle torques. The aim of this thesis was to explore the temporal properties of the sensorimotor loops driving the perception and vestibular control of standing balance. Using a robotic balance simulator, experimentally-induced time delays were introduced between human participant’s ankle-produced torques and body movement. The first experiment used a psychophysical design to determine what delay is needed for humans to perceive a change in balance control. All participants were able to perceive a 300 ms delay with 100% success, with an average 69% correct threshold of 155 ms. In the second experiment, participants were exposed to a virtual vestibular perturbation while they balanced their body at different induced delays. Vestibular-evoked muscle responses attenuated with increasing loop delays, falling to amplitudes 84% smaller than baseline when a 500 ms delay was introduced between the produced torques and body movement. This is the first study to explore the time domain relationship between sensory and motor signals in standing, and the results reveal and describe temporal constraints of the sensorimotor control of balance. The present findings will act as springboard for studying postural control mechanisms in the future, encouraging the use of this robotic simulator to alter sensorimotor relationships during ongoing balance control. Using interventions like induced delays, we can decipher the natural processes that govern posture, and explore the adaptability and plasticity of these systems.
The MicroJy and NanoJy Radio Sky: Source Population and Multi-wavelength Properties
Creators: name: Padovani, Paolo
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: I present simple but robust estimates of the types of sources making up the faint, sub-microJy radio sky. These include, not surprisingly, star-forming galaxies and radio-quiet AGN but also two "new" populations, that is low radio power ellipticals and dwarf galaxies, the latter likely constituting the most numerous component of the radio sky. I then estimate for the first time the X-ray, optical, and mid-infrared fluxes these objects are likely to have, which are very important for source identification and the synergy between the upcoming SKA and its various pathfinders with future missions in other bands. On large areas of the sky the SKA, and any other radio telescope producing surveys down to at least the microJy level, will go deeper than all currently planned (and past) sky surveys, with the possible exception of the optical ones from PAN-STARRS and the LSST. SPICA, JWST, and in particular the Extremely Large Telescopes (ELTs) will be a match to the next generation radio telescopes but only on small areas and above ~ 0.1 - 1 microJy (at 1.4 GHz), while even IXO will only be able to detect a small (tiny) fraction of the microJy (nanoJy) population in the X-rays. On the other hand, most sources from currently planned all-sky surveys, with the likely exception of the optical ones, will have a radio counterpart within the reach of the SKA. JWST and the ELTs might turn out to be the main, or perhaps even the only, facilities capable of securing optical counterparts and especially redshifts of microJy radio sources. Because of their sensitivity, the SKA and its pathfinders will have a huge impact on a number of topics in extragalactic astronomy including star-formation in galaxies and its co-evolution with supermassive black holes, radio-loudness and radio-quietness in AGN, dwarf galaxies, and the main contributors to the radio background.[ABRIDGED]
description: 18 pages, 5 color figures, accepted for publication in the Monthly Notices of the Royal Astronomical Society
title: IAA1548
Creators: name: Théa Poullain
name: Galinand, Cyrille
name: Université Paris1 Panthéon-Sorbonne
Publisher: name: Archeovision
Year: 2022
Subjects: subject: tête
subject: lion

description: moulage tete de lion
description: 1 fichier 3D (ply), 73 fichiers image (jpg)
State of outsourcing in the mining industry : an overview
Creators: name: Baatartogtokh, Tserenbaljir
Publisher: name: University of British Columbia
Year: 2017

description: There is limited research on the topic of outsourcing in the mining industry. The purpose of the study is to fill this gap and gain a general understanding of the state of outsourcing in the mining industry. The study seeks to answer basic questions such as how prevalent is outsourcing, what activities are being outsourced and why they are outsourcing. Upon surveying the upper management (e.g. CEOs and COOs) of 106 primarily Canadian mining companies with global operations, it became evident that outsourcing is widespread among both juniors and large mining companies. Some 89.7% of mining companies outsource or have outsourced in the past. Mining companies outsource mining more than mineral processing because mineral processing is a revenue generator and require large investments, which outsourcing suppliers generally do not have. Other popular activities for outsourcing include construction during mining operations. The biggest reason for outsourcing is access to specialized competencies, including skilled labour, followed by flexibility such adapting to seasonality, changes in geology and commodity prices. According to the criteria created by Quinn and Hilmer (1994), mining and mineral processing are not core competencies for mining companies and should be evaluated carefully for outsourcing although some 92.1% of mining companies perceive these activities as being core competencies. The seven traits of core competency put forward by Quinn and Hilmer were that they are: based on skills and intellectual property in the company; create flexibility; one of the top three capabilities of the company; fills a gap in the industry; performed better than providers; shareholders/customers care about them; and embedded in company processes. None of the traits reached the 92.1% agreement (to match the mining companies’ perception) necessary to be a core competency and therefore, mining and mineral processing are not core competencies for mining companies.
Onsager and Kaufman's calculation of the spontaneous magnetization of the Ising model
Creators: name: Baxter, R. J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Lars Onsager announced in 1949 that he and Bruria Kaufman had proved a simple formula for the spontaneous magnetization of the square-lattice Ising model, but did not publish their derivation. It was three years later when C. N. Yang published a derivation in Physical Review. In 1971 Onsager gave some clues to his and Kaufman's method, and there are copies of their correspondence in 1950 now available on the Web and elsewhere. Here we review how the calculation appears to have developed, and add a copy of a draft paper, almost certainly by Onsager and Kaufman, that obtains the result.
description: 32 pages, including copies of a draft paper almost certainly by Onsager and Kaufman Minor additions and corrections in second version
Analytical solution of the geodesic equation in Kerr-(anti) de Sitter space-times
Creators: name: Hackmann, Eva
name: Kagramanova, Valeria
name: Kunz, Jutta
name: Lämmerzahl, Claus
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The complete analytical solutions of the geodesic equations in Kerr-de Sitter and Kerr-anti-de Sitter space-times are presented. They are expressed in terms of Weierstrass elliptic p, zeta, and sigma functions as well as hyperelliptic Kleinian sigma functions restricted to the one-dimensional theta-divisor. We analyze the dependency of timelike geodesics on the parameters of the space-time metric and the test-particle and compare the results with the situation in Kerr space-time with vanishing cosmological constant. Furthermore, we systematically can find all last stable spherical and circular orbits and derive the expressions of the deflection angle of flyby orbits, the orbital frequencies of bound orbits, the periastron shift, and the Lense-Thirring effect.
description: 18 pages, 11 figures
Black hole spectroscopy via adiabatic invariance
Creators: name: Majhi, Bibhas Ranjan
name: Vagenas, Elias C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: During the last years, one had to combine the proposal about how quasinormal frequencies are related with black holes and the proposal about the adiabatic invariance of black holes in order to derive the quantized entropy spectrum and its minimum change for several black holes. In this letter we exclusively utilize the statement that the black hole horizon area is an adiabatic invariant and derive an equally spaced entropy spectrum of a black hole with its quantum to be equal to the one given by Bekenstein. Interestingly, in our approach no concept of quasi-normal mode is needed.
description: v1: 6 pages, LaTeX, no figures, to appear in Phys. Lett. B; v2: minor changes to match published version
Scaffolding for learning from reinforcement: Improving interaction learning
Creators: name: Fleer, Sascha
Publisher: name: Universität Bielefeld
Year: 2020
Subjects: subject: 006

description: This thesis analyses the psychological concept of “scaffolding” as a candidate for being able to facilitate the learning process not only of human learners but also of artificial agents. The original concept employs a range of techniques to improve the learning process of novices by analysing their current skill level, adjusts the task’s complexity, directs their attention and provides temporary support. By transferring these methods to the field of machine learning and proposing scaffolding as a general principle for guiding the learning process of an artificial agent, this work demonstrates that the learning performance can be improved significantly and even enables the learning of new skills that would otherwise be impossible.

 First, the relations of the individual key aspects of this psychological theory to historical and recent findings in the field of machine learning are discussed. Second, a suitable refined definition of “scaffolding for machine learning” is put forward by positioning scaffolding as a special form of meta-learning that is inspired by psychology. As a result, four different scaffolds for reinforcement learning agents are designed for supporting different parts of the learning process by facilitating efficient acting, perception or pre-learning of sub-skills. In the final analysis, their positive impact is demonstrated by testing these supportive approaches on selected interaction problems.
Size-Dependency of Income Distributions and Its Implications
Creators: name: Zhang, Jiang
name: Wang, You-Gui
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Finance (q-fin.GN)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Economics and business
subject: FOS: Physical sciences
subject: 89.65.Gh, 89.75.Da, 89.75.Kd

description: This paper highlights the size-dependency of income distributions, i.e. the income distribution curves versus the population of a country systematically. By using the generalized Lotka-Volterra model to fit the empirical income data in the United States during 1996-2007, we found an important parameter $λ$ can scale with a $β$ power of the size (population) of U.S. in that year. We pointed out that the size-dependency of the income distributions, which is a very important property but seldom addressed by previous studies, has two non-trivial implications: (1) the allometric growth pattern, i.e. the power law relationship between population and GDP in different years, which can be mathematically derived from the size-dependent income distributions and also supported by the empirical data; (2) the connection with the anomalous scaling for the probability density function in critical phenomena since the re-scaled form of the income distributions has the exactly same mathematical expression for the limit distribution of the sum of many correlated random variables asymptotically.
description: 4 figures, 4 pages
The topological fundamental group and free topological groups
Creators: name: Brazas, Jeremy
Publisher: name: arXiv
Year: 2010
Subjects: subject: Algebraic Topology (math.AT)
subject: General Topology (math.GN)
subject: FOS: Mathematics

description: The topological fundamental group $π_{1}^{top}$ is a homotopy invariant finer than the usual fundamental group. It assigns to each space a quasitopological group and is discrete on spaces which admit universal covers. For an arbitrary space $X$, we compute the topological fundamental group of the suspension space $Σ(X_+)$ and find that $π_{1}^{top}(Σ(X_+))$ either fails to be a topological group or is the free topological group on the path component space of $X$. Using this computation, we provide an abundance of counterexamples to the assertion that all topological fundamental groups are topological groups. A relation to free topological groups allows us to reduce the problem of characterizing Hausdorff spaces $X$ for which $π_{1}^{top}(Σ(X_+))$ is a Hausdorff topological group to some well known classification problems in topology.
description: 33 pages
Attention-Guided Mask Propagation for Video Object Segmentation
Creators: name: Norcini, Lorenzo
Publisher: name: University of Illinois at Chicago
Year: 2020
Subjects: Uncategorized

description: Video Object Segmentation (VOS) is a pixel-level classification task aiming to separate target objects from the background portion of a video. Temporally consistent pixel-level partition of video sequences has applications across several domains such as object tracking, video summarization, video compression and editing, human-computer interaction, and autonomous vehicles. In this document we focus on the task of VOS in a semi-supervised setting, that is where the first frame ground truth is available and defines the target for the rest of the video sequence. We will analyze different state-of-the-art techniques for VOS with particular focus on their strengths and weaknesses. Then, we will introduce our design for a deep learning-based approach that achieves competitive results on available public benchmarks. We will present a detailed comparison of the performances in relation to the current state-of-the-art and investigate the effect of each component of our model with extensive ablation studies. Finally, we will suggest possible future research paths both for the VOS field in general and more specifically for our architecture.
title: Hili3_Set19
Creators: name: Noé Angelé
name: Galinand, Cyrille
name: Université Paris1 Panthéon-Sorbonne
Publisher: name: Archeovision
Year: 2022
Subjects: subject: poterie

description: céramique
description: 1 fichier 3D (ply), 82 fichiers image (jpg)
Information capacity of quantum observable
Creators: name: Holevo, A. S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper we consider the classical capacities of quantum-classical channels corresponding to measurement of observables. Special attention is paid to the case of continuous observables. We give the formulas for unassisted and entanglement-assisted classical capacities $C,C_{ea}$ and consider some explicitly solvable cases which give simple examples of entanglement-breaking channels with $C
description: 13 pages. New section and references are added concerning the ensemble-observable duality
Eigenvalue Distributions in Matrix Models for Chern-Simons-matter Theories
Creators: name: Suyama, Takao
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The eigenvalue distribution is investigated for matrix models related via the localization to Chern-Simons-matter theories. An integral representation of the planar resolvent is used to derive the positions of the branch points of the planar resolvent in the large 't Hooft coupling limit. Various known exact results on eigenvalue distributions and the expectation value of Wilson loops are reproduced.
description: 32 pages, 7 figures, v2) references added
Description, Evaluation and Validation of Downscaled Daily Climate Data Version 2
Creators: name: Rammer, Werner
name: Pucher, Christoph
name: Neumann, Mathias
Publisher: name: figshare
Year: 2022
Subjects: Climate Science

description: Update of the daily gridded climate data ("Spatial downscaling of European climate data") provided by Moreno and Hasenauer (2015). The climate data is based on downscaling E-Obs (European Observations) climate data using WorldClim climate surfaces.

Daily maximum temperature, minimum temperature and precipitation for the years 1950 to 2017 are publicly available at ftp://palantir.boku.ac.at/Public/ClimateData/v2
This file documents the changes made in version 2 of the downscaled climate data and how it compares to version 1.
Precision from the diphoton Zh channel at FCC-hh
Creators: name: Bishara, Fady
name: De Curtis, Stefania
name: Delle Rose, Luigi
name: Englert, Philipp
name: Grojean, Christophe
name: Montull, Marc
name: Panico, Giuliano
name: Rossia, Alejo N.
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2020
Subjects: * Automatic Keywords *
CERN LHC Coll: upgrade
coupling: gauge
sensitivity
FCC-hh
two-photon
rapidity
lepton
hadron
quark
TeV

description: The future 100 TeV FCC-hh hadron collider will give access to rare but clean final states which are out of reach of the HL-LHC. One such process is the $Zh$ production channel in the $(\nu\bar{\nu} / \ell^{+}\ell^{-})\gamma\gamma$ final states. We study the sensitivity of this channel to the $\mathcal{O}_{\varphi q}^{(1)}$, $\mathcal{O}_{\varphi q}^{(3)}$, $\mathcal{O}_{\varphi u}$, and $\mathcal{O}_{\varphi d}$ SMEFT operators, which parametrize deviations of the $W$ and $Z$ couplings to quarks, or, equivalently, anomalous trilinear gauge couplings (aTGC). While our analysis shows that good sensitivity is only achievable for $\mathcal{O}_{\varphi q}^{(3)}$, we demonstrate that binning in the $Zh$ rapidity has the potential to improve the reach on $\mathcal{O}_{\varphi q}^{(1)}$. Our estimated bounds are one order of magnitude better than projections at HL-LHC and is better than global fits at future lepton colliders. The sensitivity to $\mathcal{O}_{\varphi q}^{(3)}$ is competitive with other channels that could probe the same operator at FCC-hh. Therefore, combining the different diboson channels sizeably improves the bound on $\mathcal{O}_{\varphi q}^{(3)}$, reaching a precision of $|\delta g_{1z}| \lesssim 2 \times 10^{-4}$ on the deviations in the $ZWW$ interactions.
Null cosmological singularities and free strings: II
Creators: name: Narayan, K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In arXiv:0909.4731 [hep-th], we argued that the free string lightcone Schrodinger wavefunctional in the vicinity of null Kasner-like cosmological singularities has nonsingular time-dependence if the Kasner exponents satisfy certain relations. These backgrounds are anisotropic plane waves with singularities. We first show here that only certain singularities admit a Rosen-Kasner frame with exponents satisfying relations leading to a wavefunctional with nonsingular time-dependence. Then we build on the (Rosen) description further and study various physical observables for a time-dependent harmonic oscillator toy model and then the free string, reconciling this with the corresponding description in the conventional plane wave variables. We find that observables containing no time derivatives are identical in these variables while those with time derivatives are different. Various free string observables are still divergent, perhaps consistent with string oscillator states becoming light in the vicinity of the singularity.
description: Latex, 25pgs, v2: some reorganization and other minor modifications, references added, to appear in JHEP
Turbulent Round Jet CFD Analysis with SU2 Code: from Validation to Aircraft's Exhaust.
Creators: name: D'Amico, Francesco
Publisher: name: University of Illinois at Chicago
Year: 2020
Subjects: Uncategorized

description: Computational Fluid Dynamics is getting more and more an established reality in nowadays engineering applications involving uids. Being able to simulate uids' behavior in di erent con gurations is an incredibly strong tool for many engineering elds varying from components' design to climatic e ects' estimations. A lot of research is currently based on using CFD software to obtain results in a faster, easier and less expensive way, compared to reproducing the uids behavior in experiments. This is why it becomes very interesting understanding what tools are available, what is their current status, how to better exploit them. There are already some well-established CFD codes that are widely adopted and that have been intensively developed during the years, but most of them are really expensive. The rst aim of this work is to evaluate SU2, a new open-source (free) CFD code developed by Stanford University, in the speci c con guration of turbulent round jets. This tool already shows incredible capability and it has been used with success in a wide range of other cases. My intent was to give my contribution by testing the software in such con guration. The idea is to show potential new users how to better adjust the settings to obtain reliable results, but also to give a feedback to the software developers on possible improvements to be performed on the code. Second aim is to provide a wide range of results when dealing with turbulent round jets with the ultimate goal to get as close as possible to precisely simulate a general aircraft's exhaust uid ow.
Severance and continuance—mimesis in relation to Sacha Kagan's "Art and Sustainability"
Creators: name: Hoekstra, Daan
Publisher: name: University of British Columbia
Year: 2017

description: Sacha Kagan’s Art and Sustainability refers to four fragments from Heraclitus as exemplifying “an aesthetic sensibility to complexity.” Kagan’s book, however, deals mostly with art in the 20th-21st centuries, without addressing links between Heraclitus’ time and the present. This thesis addresses the historical gap by suggesting that Western traditions of mimesis in the visual arts provided continuity of the sensuous immersion in the environment, in spite of the severance that occurred, according to David Abram, when culture transitioned from oral traditions to written language, and from a pictographic mode into an alphabetic mode. I make legible the connections between the thought of Heraclitus, artistic practice in the Western tradition of naturalistic painting, and the work of John Ruskin, William Morris and Ludwig von Bertalanffy, contending that mimetic traditions retained the thought of Heraclitus and Pythagoras, in methodologies of practice that became a sort of proto-systems-thinking and proto-complexity-theory. Through Ruskin and Morris, these mimetic traditions, about a way of seeing, led directly to 20th century environmentalism and concepts of sustainability. Through Bertalanffy, knowledge from the mimetic traditions led directly to the genesis of 20th century systems theory. Discussion of these issues is nested within a broader analysis of the several narratives about how environmental problems are the result of multiple cases of severance, schism that separated humans, intellectually, psychically and physically, from the sensuous immersion in the “more-than-human” to which Abram refers. I emphasize both the need to take stock of the resilient strands of rooted pre-modern cultural traditions that continued in spite of severance and the need to understand and study severance as a recurring historical phenomenon. I point out the way in which ancient influences frequently revitalize culture, contending that pre-modern mimetic traditions carry important ecological knowledge.
Line Patterns in Free Groups
Creators: name: Cashen, Christopher H.
name: Macura, Natasa
Publisher: name: arXiv
Year: 2010
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20F65, 20E05

description: We study line patterns in a free group by considering the topology of the decomposition space, a quotient of the boundary at infinity of the free group related to the line pattern. We show that the group of quasi-isometries preserving a line pattern in a free group acts by isometries on a related space if and only if there are no cut pairs in the decomposition space.
description: 35 pages, 22 figures, PDFLatex; v2. finite index requires extra hypothesis; v3. 37 pages, 24 figures: updated references and add example in Section 6.3 of a rigid pattern for which the free group is not finite index in the group of pattern preserving quasi-isometries; v4. 40 pages, 26 figures: improved exposition and add example in Section 6.4 of a rigid pattern whose cube complex is not a tree
Orbifolded Konishi from the Mirror TBA
Creators: name: de Leeuw, Marius
name: van Tongeren, Stijn J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Starting with a discussion of the general applicability of the simplified mirror TBA equations to simple deformations of the AdS_5 x S^5 superstring, we proceed to study a specific type of orbifold to which the undeformed simplified TBA equations directly apply. We then use this set of equations, as well as Luscher's approach, to determine the NLO wrapping correction to the energy of what we call the orbifolded Konishi state, and show that they perfectly agree. In addition we discuss wrapping corrections to the ground state energy of the orbifolded model under consideration.
description: 26 pages, 5 figures, v2: corrected typos, added a short discussion on the ground state of the model; as submitted to J. Phys. A
Mesons from global Anti-de Sitter space
Creators: name: Erdmenger, Johanna
name: Filev, Veselin
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the context of gauge/gravity duality, we study both probe D7-- and probe D5--branes in global Anti-de Sitter space. The dual field theory is N=4 theory on R x S^3 with added flavour. The branes undergo a geometrical phase transition in this geometry as function of the bare quark mass m_q in units of 1/R with R the S^3 radius. The meson spectra are obtained from fluctuations of the brane probes. First, we study them numerically for finite quark mass through the phase transition. Moreover, at zero quark mass we calculate the meson spectra analytically both in supergravity and in free field theory on R x S^3 and find that the results match: For the chiral primaries, the lowest level is given by the zero point energy or by the scaling dimension of the operator corresponding to the fluctuations, respectively. The higher levels are equidistant. Similar results apply to the descendents. Our results confirm the physical interpretation that the mesons cannot pair-produce any further when their zero-point energy exceeds their binding energy.
description: 43 pages, 8 figures, references edited, few typos corrected, updated to match the published version
Holographic Duals of D=3 N=4 Superconformal Field Theories
Creators: name: Assel, Benjamin
name: Bachas, Costas
name: Estes, John
name: Gomis, Jaume
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We find the warped AdS_4 x K type-IIB supergravity solutions holographically dual to a large family of three dimensional \cN=4 superconformal field theories labeled by a pair (ρ,\hatρ) of partitions of N. These superconformal theories arise as renormalization group fixed points of three dimensional mirror symmetric quiver gauge theories, denoted by T^ρ_{\hat ρ}(SU(N)) and T_ρ^{\hat ρ}(SU(N)) respectively. We give a supergravity derivation of the conjectured field theory constraints that must be satisfied in order for these gauge theories to flow to a non-trivial supersymmetric fixed point in the infrared. The exotic global symmetries of these superconformal field theories are precisely realized in our explicit supergravity description.
description: 33 pages, LaTeX; added a comment mentioning that these solutions have all moduli fixed; typos corrected; references added
Securing decarbonized road transport – a comparison of how EV deployment has become a critical dimension of battery security strategies for China, the EU, and the US.
Creators: name: Campbell, Loyle
name: Hafner, Manfred
name: Lu, Xinqing
name: Noussan, Michel
name: Raimondi, Pier Paolo
name: Zhu, Erpu
name: Campbell, Loyle
name: Hafner, Manfred
name: Lu, Xinqing
name: Noussan, Michel
name: Raimondi, Pier Paolo
name: Zhu, Erpu
Publisher: name: Unknown
Year: 2021
Subjects: subject: Research and Development/Tech Change/Emerging Technologies
subject: Resource /Energy Economics and Policy
subject: Lithium-Ion Batteries
subject: Electric Vehicles
subject: Energy Transition
subject: Energy Security
subject: China
subject: the European Union
subject: the United States

description: This paper compares how the pursuit of self-sufficient Lithium-ion battery production by the three main geo-economic players (China, the European Union, and the United States) is unfolding by looking at the electrification of the transport sector. The analysis of this paper uses the concept of energy security and the 4 As outlined by the Asia Pacific Energy Research Center (2007) to outline the availability, accessibility, affordability, and acceptability of Lithium-ion (Li-Ion) batteries for each respective actor. This paper aims to compare the dynamics of each geoeconomic player’s EV deployment along these four indicators. Most work in this field assesses the battery strategies of these three geo-economic players individually or focuses on EV deployment from a purely economics perspective. In contrast, this paper attempts to bridge this gap through the framework of energy security to compare how each of the three player’s battery strategy connects to broader EV deployment. Adopting this framework allows us to highlight how China’s strong industrial policies and generous incentives contrast to the government multilateral alliance-building done in the European Union and the overwhelmingly dominant role of private actors found in the United States.
A Comprehensive Survey of Data Mining-based Fraud Detection Research
Creators: name: Phua, Clifton
name: Lee, Vincent
name: Smith, Kate
name: Gayler, Ross
Publisher: name: arXiv
Year: 2010
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: This survey paper categorises, compares, and summarises from almost all published technical and review articles in automated fraud detection within the last 10 years. It defines the professional fraudster, formalises the main types and subtypes of known fraud, and presents the nature of data evidence collected within affected industries. Within the business context of mining the data to achieve higher cost savings, this research presents methods and techniques together with their problems. Compared to all related reviews on fraud detection, this survey covers much more technical articles and is the only one, to the best of our knowledge, which proposes alternative data and solutions from related domains.
description: 14 pages