cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Application of Bayesian statistics in Supernovae Ia cosmology
Creators: name: Shariff, Hikmatali Ansar
Publisher: name: Imperial College London
Year: 2017

description: The purpose of this thesis is to apply Bayesian analysis to supernovae type Ia (SNIa) cosmology to derive more accurate parameter estimation including cosmological parameters. Additionally, it aims to improve the standard SALT2 light-curve fitting procedure by providing empirical and physically motivated correction to the linear Tripp formalism. \n BAHAMAS \n We develop BAyesian HierArchical Modelling for the Analysis of Supernova cosmology (BAHAMAS) software package for the analysis of SNIa cosmology in a statistically consistent manner. We apply our algorithm to a sample of 740 spectroscopically confirmed SNIa from the Joint Light-curve Analysis (JLA) dataset and simultaneously determine cosmological parameters and population level parameters, including residual scatter. Combining JLA and Planck Cosmic Microwave Background data, we find significant discrepancies in cosmological parameter constraints with respect to the standard analysis: we find omega_m = 0.399 \pm 0.027, 2.8 \sigma higher than previously reported and w = -0.910 \pm 0.045, 1.6 \sigma higher than the standard analysis. \n Extensions to SALT2 \n BAHAMAS provides a framework for analysing to extensions the classical SALT2 light-curve fitting procedure including empirical corrections to the standard Phillips relationship. We analyse four extensions in this thesis. We use the host galaxy mass as an additional covariate in the linear regression and allow for a redshift dependence for the colour-magnitude slope, \beta(z). We use the time of the second peak in the NIR band due to re-brightening, t_2, as an alternative standardization parameter of SNIa peak brightness. Finally we split the SNIa into two groups based on the distance to their host galaxy and investigate if SNIa further from the host galaxy are better standard candles. \n Simple-BayeSN \n Conventional SNIa cosmology analyses currently use a simplistic linear regression of magnitude versus colour and light curve shape. We construct a probabilistic generative model for the dusty distribution of extinguished absolute magnitudes and apparent colours as the convolution of an intrinsic SNIa colour-magnitude distribution and a host galaxy dust reddening-extinction distribution. Additionally, we combine Simple-BayeSN and BAHAMAS to allow for cosmological parameter estimation of "dusty" SNIa light curves. \n Selection Effects \n Most modern SNIa cosmological analyses account for selection effects by a bias correction to the apparent magnitude (or distance modulus). However, within a Bayesian framework, it is possible to consistently account for selection effects by associating a selection probability to each observation. We use SNANA simulations and supervised classifiers to predict the selection probability conditional on the latent variables. Additionally, we use Monte Carlo simulations to integrate the latent variables and derive the selection probability conditional on the hyper-parameters (and redshift).
title: ADCO, Premier cartulaire de Saint-Étienne de Dijon (XIIe siècle), Cart. 21 (G 125), 71 folios, f. 00072
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2015
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire
subject: LaMOP

description: Premier cartulaire de Saint-Étienne de Dijon (XIIe siècle), Archives départementales de la Côte-d'Or, Cart. 21 (G 125), 71 folios, f. 00072, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Premier cartulaire de Saint-Étienne de Dijon (XIIe siècle), Archives départementales de la Côte-d'Or, Cart. 21 (G 125), 71 folios, f. 00072, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: http://www.wikidata.org/entity/Q15945019
description: Provenance: abbaye Saint-Étienne de Dijon
Robotic manipulators for single access surgery
Creators: name: Wisanuvej, Piyamate
Publisher: name: Imperial College London
Year: 2017

description: This thesis explores the development of cooperative robotic manipulators for enhancing surgical precision and patient outcomes in single-access surgery and, specifically, Transanal Endoscopic Microsurgery (TEM). During these procedures, surgeons manipulate a heavy set of instruments via a mechanical clamp inserted in the patient’s body through a surgical port, resulting in imprecise movements, increased patient risks, and increased operating time. Therefore, an articulated robotic manipulator with passive joints is initially introduced, featuring built-in position and force sensors in each joint and electronic joint brakes for instant lock/release capability. The articulated manipulator concept is further improved with motorised joints, evolving into an active tool holder. The joints allow the incorporation of advanced robotic capabilities such as ultra-lightweight gravity compensation and hands-on kinematic reconfiguration, which can optimise the placement of the tool holder in the operating theatre. Due to the enhanced sensing capabilities, the application of the active robotic manipulator was further explored in conjunction with advanced image guidance approaches such as endomicroscopy. Recent advances in probe-based optical imaging such as confocal endomicroscopy is making inroads in clinical uses. However, the challenging manipulation of imaging probes hinders their practical adoption. Therefore, a combination of the fully cooperative robotic manipulator with a high-speed scanning endomicroscopy instrument is presented, simplifying the incorporation of optical biopsy techniques in routine surgical workflows. Finally, another embodiment of a cooperative robotic manipulator is presented as an input interface to control a highly-articulated robotic instrument for TEM. This master-slave interface alleviates the drawbacks of traditional master-slave devices, e.g., using clutching mechanics to compensate for the mismatch between slave and master workspaces, and the lack of intuitive manipulation feedback, e.g. joint limits, to the user. To address those drawbacks a joint-space robotic manipulator is proposed emulating the kinematic structure of the flexible robotic instrument under control.
Psittacus domicella Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Psittaciformes
Psittacidae
Psittacus
Psittacus domicella

description: Psittacus domicella [spec. nov.]
P. brachyurus ruber, pileo fusco, alis viridibus, humeris genibusque caeruleis.
Psittacus coccineus orientalis, vertice nigro. Edw. av. 171. t. 171.
Psittacus brasiliensis. Alb. av. 1. p. 13. t. 13?
Habitat in Asia.
description: Published as part of Linnaeus, Carolus, 1758, Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Stockholm :Laurentius Salvius on page 100, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Thermal fluctuations in antiferromagnetic nanostructures
Creators: name: Semenov, Yuriy G.
name: Xu, Xiniy
name: Kim, Ki Wook
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A theoretical model is developed that can accurately analyze the effects of thermal fluctuations in antiferromagnetic (AFM) nano-particles. The approach is based on Fourier series representation of the random effective field with cut-off frequencies of physical origin at low and high limits while satisfying the fluctuation-dissipation theorem at the same time. When coupled with the formalism of a Langevin dynamical equation, it can describe the stochastic Néel vector dynamics with the AFM parameters, circumventing the arbitrariness of the commonly used treatments in the micro-magnetic simulations. Subsequent application of the model to spontaneous Néel vector switching provides a thermal stability analysis of the AFM states. The numerical simulation shows that the AFM states are much less prone to the thermally induced accidental flips than the ferromagnetic counterparts, suggesting a longer retention time for the former.
description: 19 pages, 4 figures
An appraisal of the ‘Living Fossil’ Concept
Creators: name: Bennett, Dominic John
Publisher: name: Imperial College London
Year: 2017

description: Although the term ‘living fossil’ has been around for over 150 years, it remains scientifically undefined and contentious. Generally, it refers to any taxon that is evolutionarily unique, species-poor and exhibits traits closely resembling those of extinct taxa. This interpretation, however, is not universal. Other interpretations of the term include species that are evolutionary dead-ends, taxa that were first discovered in the fossil record and/or lineages that have undergone no (sic) morphological change. In addition to the confusion over definition, many have argued against the concept on the grounds that it is either not feasible, that it may not delineate a true category of biodiversity or that it recalls defunct Victorian scientific ideas. Despite these objections, it is evident that the concept of the living fossil can play an important role in our understanding of evolution over large timescales. In recent years there has been renewed interest in the concept of the living fossil thanks to the development of genomic techniques that are revealing previously hidden rates of molecular change in well-known living fossils. Additionally, many species that have been described as living fossils are threatened with extinction and there exists a risk that their unique evolutionary history is being lost. In this thesis, I attempt a re-appraisal of the living fossil concept. Firstly I test whether the concept of the living fossil can be made scientifically sound. Secondly I develop a new quantitative definition of the living fossil. I show that the concept is robust as it can be used to distinguish lineages that have experienced different rates of evolution. In addition I demonstrate that it is possible to devise a quantitative definition, which I use to identify living fossils and their traits across a wide range of taxonomic groups.
DCentNet: Decentralized Multistage Biomedical Signal Classification using Early Exits
Creators: name: Li, Xiaolin
name: Huang, Binhua
name: Cardiff, Barry
name: John, Deepu
Publisher: name: arXiv
Year: 2025
Subjects: subject: Signal Processing (eess.SP)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: DCentNet is a novel decentralized multistage signal classification approach designed for biomedical data from IoT wearable sensors, integrating early exit points (EEP) to enhance energy efficiency and processing speed. Unlike traditional centralized processing methods, which result in high energy consumption and latency, DCentNet partitions a single CNN model into multiple sub-networks using EEPs. By introducing encoder-decoder pairs at EEPs, the system compresses large feature maps before transmission, significantly reducing wireless data transfer and power usage. If an input is confidently classified at an EEP, processing stops early, optimizing efficiency. Initial sub-networks can be deployed on fog or edge devices to further minimize energy consumption. A genetic algorithm is used to optimize EEP placement, balancing performance and complexity. Experimental results on ECG classification show that with one EEP, DCentNet reduces wireless data transmission by 94.54% and complexity by 21%, while maintaining original accuracy and sensitivity. With two EEPs, sensitivity reaches 98.36%, accuracy 97.74%, wireless data transmission decreases by 91.86%, and complexity is reduced by 22%. Implemented on an ARM Cortex-M4 MCU, DCentNet achieves an average power saving of 73.6% compared to continuous wireless ECG transmission.
On Second-order Perturbation Theories of Gravitational Instability in Friedmann-Lemaitre Models
Creators: name: Matsubara, Takahiko
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Eulerian and Lagrangian second-order perturbation theories are solved explicitly in closed forms in $Ω\neq 1$ and $Λ\neq 0$ {}Friedmann-Lema\^ıtre models. I explicitly write the second-order theories in terms of closed one-dimensional integrals. In cosmologically interested cases ($Λ= 0$ or $Ω+ λ= 1$), they reduce to elementary functions or hypergeometric functions. For arbitrary $Ω$ and $Λ$, I present accurate fitting formula which are sufficient in practice for the observational cosmology. It is reconfirmed for generic $Ω$ and $Λ$ of interest that second-order effect only weakly depends on these parameters.
description: 9 pages, LaTeX, to appear in Progress of Theoretical Physics (Letters)
Formation of High Redshift Objects in a Cosmic String Theory with Hot Dark Matter
Creators: name: Moessner, R.
name: Brandenberger, R.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using a modification of the Zel'dovich approximation adapted to hot dark matter, the accretion of such matter onto moving cosmic string loops is studied. It is shown that a large number of $10^{12}M_\odot$ nonlinear objects will be produced by a redshift of $z=4$. These objects could be the hosts of high redshift quasars.
description: 21 pages, 1 figure, uses phyzzx and epsf macros
Integrable semi-discretization of the massive Thirring system in laboratory coordinates
Creators: name: Joshi, Nalini
name: Pelinovsky, Dmitry E.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Several integrable semi-discretizations are known in the literature for the massive Thirring system in characteristic coordinates. We present for the first time an integrable semi-discretization of the massive Thirring system in laboratory coordinates. Our approach relies on the relation between the continuous massive Thirring system and the Ablowitz-Ladik lattice. The Backlund transformation for solutions to the Ablowitz-Ladik lattice and the time evolution of the massive Thirring system in laboratory coordinates are combined together in the derivation of the Lax system for the integrable semi-discretization of the massive Thirring system.
description: 10 pages, 0 figures
On the validation of nonlinear dynamic models for structures with frictional joints
Creators: name: Pesaresi, Luca
Publisher: name: Imperial College London
Year: 2017

description: High cycle fatigue caused by dynamic stresses is one of the main threats for aeroengine components. Friction damping is regularly being used as a passive system to dissipate the vibrational energy of these components. Due to the presence of friction contacts, the dynamic behaviour of engine components becomes nonlinear, making an analysis much more challenging. Various modelling approaches have been proposed, however due to the complexity of the systems, a standard fully validated approach is still not available. This research introduces a detailed explicit modelling approach, based on Imperial College long standing experience with nonlinear dynamic modelling, which has been extended, refined and fully validated for the predictions of the dynamic behaviour of structures with frictional joints. The main focus of this research is on the modelling of underplatform dampers, due to their importance to reduce the vibration amplitudes of turbine blades. A new underplatform damper test rig was designed for this scope, and the tests performed highlighted its ability to reproduce the nonlinear effects caused by the dampers on the blades dynamics often observed in real engines. The explicit modelling approach was then validated against the experimental results of the new rig, providing new insights and guidelines for a state of art damper model. A successful application of the explicit modelling approach to a beam with a frictional bolted joint further demonstrated the versatility of the approach. Nonlinear model validation was then further extended to the local contact behaviour by developing suitable techniques which allow to monitor the stick-slip-separation. Two techniques, one based on high speed camera and digital image correlation, and the other one based on ultrasounds, were proposed and tested, showing a promising potential to provide additional understanding of the contact mechanism at work.
Optimal Control of Droplets on a Solid Surface Using Distributed Contact Angles
Creators: name: Bonart, Henning
name: Kahle, Christian
name: Repke, Jens-Uwe
Publisher: name: Technische Universität Berlin
Year: 2020
Subjects: subject: 621 Angewandte Physik
subject: droplets
subject: optimal control
subject: contact angle
subject: phase field modeling
subject: electrowetting
subject: lab-on-a-chip

description: Controlling the shape and position of moving and pinned droplets on a solid surface is an important feature often found in microfluidic applications. However, automating them, e.g., for high-throughput applications, rarely involves model-based optimal control strategies. In this work, we demonstrate the optimal control of both the shape and position of a droplet sliding on an inclined surface. This basic test case is a fundamental building block in plenty of microfluidic designs. The static contact angle between the solid surface, the surrounding gas, and the liquid droplet serves as the control variable. By using several control patches, e.g., like that performed in electrowetting, the contact angles are allowed to vary in space and time. In computer experiments, we are able to calculate mathematically optimal contact angle distributions using gradient-based optimization. The dynamics of the droplet are described by the Cahn–Hilliard–Navier–Stokes equations. We anticipate our demonstration to be the starting point for more sophisticated optimal design and control concepts.
The Equilibrium Photoionized Absorber in 3C351
Creators: name: Nicastro, F.
name: Fiore, F.
name: Elvis, M.
name: Perola, G. C.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present two ROSAT PSPC observations of the radio-loud, lobe-dominated quasar 3C 351, which shows an `ionized absorber' in its X-ray spectrum. The factor 1.7 change in flux in the $\sim$2~years between the observations allows a test of models for this ionized absorber. The absorption feature at ~0.7 keV (quasar frame) is present in both spectra but with a lower optical depth when the source intensity - and hence the ionizing flux at the absorber - is higher, in accordance with a simple, single-zone, equilibrium photoionization model. Detailed modeling confirms this agrement quantitatively. The maximum response time of 2 years allows us to limit the gas density: n_e > 2 x 10^4 cm^{-3}; and the distance of the ionized gas from the central source R < 19 pc. This produces a strong test for a photoionized absorber in 3C~351: a factor 2 flux change in ~1 week in this source must show non-equilibrium effects in the ionized absorber.
description: 10 pages, 3 figures, accepted by ApJ
Stable Gaussian Process based Tracking Control of Euler-Lagrange Systems
Creators: name: Beckers, Thomas
name: Kulić, Dana
name: Hirche, Sandra
Publisher: name: arXiv
Year: 2018
Subjects: subject: Machine Learning (cs.LG)
subject: Systems and Control (eess.SY)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Perfect tracking control for real-world Euler-Lagrange systems is challenging due to uncertainties in the system model and external disturbances. The magnitude of the tracking error can be reduced either by increasing the feedback gains or improving the model of the system. The latter is clearly preferable as it allows to maintain good tracking performance at low feedback gains. However, accurate models are often difficult to obtain. In this article, we address the problem of stable high-performance tracking control for unknown Euler-Lagrange systems. In particular, we employ Gaussian Process regression to obtain a data-driven model that is used for the feed-forward compensation of unknown dynamics of the system. The model fidelity is used to adapt the feedback gains allowing low feedback gains in state space regions of high model confidence. The proposed control law guarantees a globally bounded tracking error with a specific probability. Simulation studies demonstrate the superiority over state of the art tracking control approaches.
description: Accepted manuscript for publication in Elsevier Automatica
Quantum critical behavior of a three-dimensional superfluid-Mott glass transition
Creators: name: Crewse, Jack
name: Lerch, Cameron
name: Vojta, Thomas
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The superfluid to insulator quantum phase transition of a three-dimensional particle-hole symmetric system of disordered bosons is studied. To this end, a site-diluted quantum rotor Hamiltonian is mapped onto a classical (3+1)-dimensional XY model with columnar disorder and analyzed by means of large-scale Monte Carlo simulations. The superfluid-Mott insulator transition of the clean, undiluted system is in the 4D XY universality class and shows mean-field critical behavior with logarithmic corrections. The clean correlation length exponent $ν= 1/2$ violates the Harris criterion, indicating that disorder must be a relevant perturbation. For nonzero dilutions below the lattice percolation threshold of $p_c = 0.688392$, our simulations yield conventional power-law critical behavior with dilution-independent critical exponents $z=1.67(6)$, $ν= 0.90(5)$, $β/ν= 1.09(3)$, and $γ/ν= 2.50(3)$. The critical behavior of the transition across the lattice percolation threshold is controlled by the classical percolation exponents. Our results are discussed in the context of a classification of disordered quantum phase transitions, as well as experiments in superfluids, superconductors and magnetic systems.
description: 10 pages, 12 figures, published version
Microhydration of ionized building blocks of DNA/RNA: infrared spectra of pyrimidine+-(H2O)1-3 clusters
Creators: name: Chatterjee, Kuntal
name: Dopfer, Otto
Publisher: name: Technische Universität Berlin
Year: 2021
Subjects: subject: 530 Physik
subject: DNA
subject: RNA
subject: pyrimidine+-(H2O)1-3
subject: microhydration

description: Hydration of biomolecules is an important physiological process that governs their structure, stability, and function. Herein, we probe the microhydration structure of cationic pyrimidine (Pym), a common building block of DNA/RNA bases, by infrared photodissociation spectroscopy (IRPD) of mass-selected microhydrated clusters, Pym+-Wn (W=H2O), in the size range n=1–3. The IRPD spectra recorded in the OH and CH stretch range are sensitive to the evolution of the hydration network. Analysis with density functional theory calculations at the dispersion-corrected B3LYP-D3/aug-cc-pVTZ level provides a consistent picture of the most stable structures and their energetic and vibrational properties. The global minima of Pym+-Wn predicted by the calculations are characterized by H-bonded structures, in which the H-bonded Wn solvent cluster is attached to the most acidic C4–H proton of Pym+ via a single CH...O ionic H-bond. These isomers are identified as predominant carrier of the IRPD spectra, although less stable local minima provide minor contributions. In general, the formation of the H-bonded solvent network (exterior ion solvation) is energetically preferred to less stable structures with interior ion solvation because of cooperative nonadditive three-body polarization effects. Progressive hydration activates the C4–H bond, along with increasing charge transfer from Pym+ to Wn, although no proton transfer is observed in the size range n⩽3. The solvation with protic, dipolar, and hydrophilic W ligands is qualitative different from solvation with aprotic, quadrupolar, and hydrophobic N2 ligands, which strongly prefer interior ion solvation by π stacking interactions. Comparison of Pym+-W with Pym-W and H+Pym-W reveals the drastic effect of ionization and protonation on the Pym...W interaction.
Behaviour of Lagrangian Approximations in Spherical Voids
Creators: name: Sahni, V.
name: Shandarin, S. F.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the behaviour of spherical Voids in Lagrangian perturbation theories L(n), of which the Zel'dovich approximation is the lowest order solution L(1). We find that at early times higher order L(n) give an increasingly accurate picture of Void expansion. However at late times particle trajectories in L(2) begin to turnaround and converge leading to the {\em contraction} of a Void, a sign of pathological behaviour. By contrast particle trajectories in L(3) are well behaved and this approximation gives results in excellent agreement with the exact top-hat solution as long as the Void is not too underdense. For very underdense Voids, L(3) evacuates the Void much too rapidly leading us to conclude that the Zel'dovich approximation L(1), remains the best approximation to apply to the late time study of Voids. The behavior of high order approximations in spherical voids is typical for asymptotic series and may be generic for Lagrangian perturbation theory.
description: 6 pages, latex, two figures. Better quality figures are available upon request from varun@iucaa.ernet.in
Psittacus lory Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Psittaciformes
Psittacidae
Psittacus
Psittacus lory

description: Psittacus lory [spec. nov.]
P. brachyurus purpureus, pileo nigro, alis viridibus, pectore genibus caudaque caeruleis.
Psittacus coccineus orientalis, vertice nigro. Edw. av. 170. t. 170. Frisch. av. 4. t. 44?
Habitat in India orientali.
description: Published as part of Linnaeus, Carolus, 1758, Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Stockholm :Laurentius Salvius on page 100, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Learning what you can do before doing anything
Creators: name: Rybkin, Oleh
name: Pertsch, Karl
name: Derpanis, Konstantinos G.
name: Daniilidis, Kostas
name: Jaegle, Andrew
Publisher: name: arXiv
Year: 2018
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Intelligent agents can learn to represent the action spaces of other agents simply by observing them act. Such representations help agents quickly learn to predict the effects of their own actions on the environment and to plan complex action sequences. In this work, we address the problem of learning an agent's action space purely from visual observation. We use stochastic video prediction to learn a latent variable that captures the scene's dynamics while being minimally sensitive to the scene's static content. We introduce a loss term that encourages the network to capture the composability of visual sequences and show that it leads to representations that disentangle the structure of actions. We call the full model with composable action representations Composable Learned Action Space Predictor (CLASP). We show the applicability of our method to synthetic settings and its potential to capture action spaces in complex, realistic visual settings. When used in a semi-supervised setting, our learned representations perform comparably to existing fully supervised methods on tasks such as action-conditioned video prediction and planning in the learned action space, while requiring orders of magnitude fewer action labels. Project website: https://daniilidis-group.github.io/learned_action_spaces
description: Published at ICLR 2019. 10 pages + 15 pages of references and appendices
title: ADCO, Huitième cartulaire de Saint-Étienne de Dijon (1661-1667), Cart. 31 (G 135), 549 folios, f. 0622
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: cartulaire
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Huitième cartulaire de Saint-Étienne de Dijon (1661-1667), Archives départementales de la Côte-d'Or, Cart. 31 (G 135), 549 folios, f. 0622, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Huitième cartulaire de Saint-Étienne de Dijon (1661-1667), Archives départementales de la Côte-d'Or, Cart. 31 (G 135), 549 folios, f. 0622, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Constraints on the Thermal Contents of the X-ray Cavities of Cluster MS 0735.6+7421 with Sunyaev-Zel'dovich Effect Observations
Creators: name: Abdulla, Zubair
name: Carlstrom, John E.
name: Mantz, Adam B.
name: Marrone, Daniel P.
name: Greer, Christopher H.
name: Lamb, James W.
name: Leitch, Erik M.
name: Muchovej, Stephen
name: O'Donnell, Christine
name: Plagge, Thomas J.
name: Woody, David
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Outbursts from active galactic nuclei (AGN) can inflate cavities in the intracluster medium (ICM) of galaxy clusters and are believed to play the primary role in offsetting radiative cooling in the ICM. However, the details of how the energy from AGN feedback thermalizes to heat the ICM is not well understood, partly due to the unknown composition and energetics of the cavities. The Sunyaev-Zel'dovich (SZ) effect, a measure of the integrated pressure along the line of sight, provides a means of measuring the thermal contents of the cavities, to discriminate between thermal, nonthermal, and other sources of pressure support. Here we report measurements of the SZ effect at 30 GHz toward the galaxy cluster MS 0735.6+7421 (MS0735), using the Combined Array for Research in Millimeter-wave Astronomy (CARMA). MS0735 hosts the most energetic AGN outburst known and lobes of radio synchrotron emission coincident with a pair of giant X-ray cavities $\sim 200$ across. Our CARMA maps show a clear deficit in the SZ signal coincident with the X-ray identified cavities, when compared to a smooth X-ray derived pressure model. We find that the cavities have very little SZ-contributing material, suggesting that they are either supported by very diffuse thermal plasma with temperature in excess of hundreds of keV, or are not supported thermally. Our results represent the first detection (with $4.4 σ$ significance) of this phenomenon with the SZ effect.
description: 15 pages, 9 figures, submitted to ApJ Jun 2018, Accepted Dec 2018, Published Jan 2019. This is the version of the article before editing, as submitted by an author to ApJ. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.3847/1538-4357/aaf888
Radio Quiet Pulsars with Ultra-Strong Magnetic Fields
Creators: name: Baring, Matthew G.
name: Harding, Alice K.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The notable absence of radio pulsars having measured magnetic dipole surface field strengths above $B_0\sim 3\times 10^{13}$ Gauss naturally raises the question of whether this forms an upper limit to pulsar magnetization. Recently there has been increasing evidence that neutron stars possessing higher dipole spin-down fields do in fact exist, including a growing list of anomalous X-ray pulsars (AXPs) with long periods and spinning down with high period derivatives, implying surface fields of $10^{14}$--$10^{15}$ Gauss. Furthermore, the recently reported X-ray period and period derivative for the Soft Gamma-ray Repeater (SGR) source SGR1806-20 suggest a surface field around $10^{15}$ Gauss. None of these high-field pulsars have yet been detected as radio pulsars. We propose that high-field pulsars should be radio-quiet because electron-positron pair production in their magnetospheres, thought to be essential for radio emission, is efficiently suppressed in ultra-strong fields ($B_0\gtrsim 4\times 10^{13}$ Gauss) by the action of photon splitting, a quantum electrodynamical process in which a photon splits into two. Our computed radio quiescence boundary in the radio pulsar $P-\dot P$ diagram, where photon splitting overtakes pair creation, is located just above the boundary of the known radio pulsar population, neatly dividing them from the AXPs. We thus identify a physical mechanism that defines a new class of high-field radio-quiet neutron stars that should be detectable by their pulsed emission at X-ray and perhaps $γ$-ray energies.
description: 4 pages, including one figure and one table, in AASTeX emulatapj format, Astrophysical Journal Letters, in press
Psittacus caerulocephalus Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Psittaciformes
Psittacidae
Psittacus
Psittacus caerulocephalus

description: Psittacus caerulocephalus [spec. nov.]
P. brachyurus, capite pectore dorsoque caeruleis, ventre uropygio caudaque viridibus, vertice flavo.�
Psittacus versicolor s. erythrocyaneus. Aldr. orn. l. 11. c. 9. Will. orn. 75. Raj. av. 31.
Habitat ...
description: Published as part of Linnaeus, Carolus, 1758, Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Stockholm :Laurentius Salvius on page 100, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Spherical harmonics method for computing the image stress due to a spherical void
Creators: name: Wang, Yifan
name: Zhang, Xiaohan
name: Cai, Wei
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We develop an efficient numerical method for calculating the image stress field induced by spherical voids in materials. The method is applied to dislocation-void interactions in dislocation dynamics simulations. We obtain a complete set of basis functions for the solution of the image stress problem, as well as their corresponding displacement, stress, and traction fields in terms of the linear combination of spherical harmonics. Using the fast transformation between the real and spherical-harmonics spaces provided by the SHTOOLS package, the method is more efficient than other image stress solvers such as the finite-element method. This method can readily be extended for solving elasticity problems involving inclusions and inhomogeneities, contact between spheres, as well as other differential equations with spherical boundaries beyond elasticity.
description: 33 pages, 6 figures
PLAY House: The Art of Finding Queer Pleasure in (Private Public) FUN + PLAY
Creators: name: CR, Vee
Publisher: name: Emily Carr University of Art and Design
Year: 2021
Subjects: Public spaces
Installations (Art)
Collage
Identity
Pleasure
Pain

description: Utilizing a TRANSdisciplinary and iterative process, with a focus on collage and installation, I am investigating identity Private spaces in relationship to the Public spaces of the Art Gallery Internet. My thesis project, PLAY House (2021), comprises three installation works that occupy, whether physically or digitally, the same three-walled room. Holliday Home (Glitch of the Heart) (2020), MySpace.jpg (2020), and PLAY Room (2021) were all created during the Covid-19 pandemic and explore intimacy, collaboration, isolation, and self-reflection with a focus on transforming a Public space. These installations act as self-portraits that aim to invite the viewer into a Private space as a means of creating understanding and connection between the artist the participant. As my work is autobiographical, my positionality as a Canadian Queer Disabled ‘90s Kid is key to unpacking my methodology of FUN(ny) + PLAY(sure/ful) art, terms I’ve invented for the purpose of this thesis. While both FUN + PLAY evoke child-like pleasure, FUN(ny) is one’s experience with pleasure, and is a synonym for something humorous, while PLAY(sure/ful) is the thing that activates one’s experience with pleasure and a synonym for sexuality. Ideally, FUN + PLAY activate Queer Pleasure (Pride Joy), which decreases Queer Pain (Shame, Anxiety, and Depression). FUN + PLAY are essential to our survival, culture, learning and innovation (Koster, Huizinga, Brown). Queerness Disability drive me to engage in FUN + PLAY and dictate my choice of a Colourful, Campy, Maximalist, DeSkilled or “BAD,” Dada, POP Art aesthetic. This hybridized aesthetic is funneled into my research on private space as self-portraiture its relationship to the public art world (e.g. Vincent van Gogh, Robert Rauschenberg, Tracey Emin, and Erica Stocking). Through my research practice I conclude that Queer Pleasure FUN + PLAY are essential in how we connect to ourselves and others in an uplifting way that is generative for learning, creativity, self-love, and community building.
description: Queer
description: FUN
description: PLAY
description: Public
description: Private
description: Sexuality
description: Gender
description: Games
Public Space and Pandemics: The Changing Relationship Between the People and their Cities
Creators: name: Molina Adame, Alonso
Publisher: name: Emily Carr University of Art and Design
Year: 2021
Subjects: Maps
Epidemics
Cartography
Cities
City planning
Public spaces
Urban parks

description: The experience of the COVID-19 pandemic brought about fundamental changes in the relationship between people and their cities. The pandemic also unveiled design elements in public spaces that were previously not visible. This study draws on these elements to investigate some of the implications that the design in public spaces will have in relation to the well-being of the community. The study analyses three regions shown in both historical and contemporary contexts, resulting in some of the design principles at stake. Epidemics bring specific factors into view regarding disease transmission. In the case of respiratory diseases such as COVID-19, physical space is a critical element in the way of transmission; in this context, urban design takes on a medical dimension. Taking this into account, the analysis of these case studies addresses several important points, including behaviour within the public space, density management, and current design strategies for the future of these cities. The research identifies the need for new urban outdoor lifestyles. The principles derived from the analysis of the case studies suggest that a network of parks, small squares, and greenspaces could provide a more active and balanced lifestyle for many people than most of the current urban designs allow. Using speculative design strategies, the research develops three cartographic propositions regarding a new network of interconnected greenspaces in three example cities. These maps are intended to provoke imagination and encourage the reconsideration of the city that maintains a universal well-being.
description: Speculative design
description: Greenspace
description: Critical design
description: Pandemics
description: Proxemics
description: Urban design
title: ADCO, Cartulaire de l'abbaye de Cîteaux dit Cartulare Antiquum t.2 (2e moitié XIIIe siècle), Cart. 167 (11 H 67), f. 0032v
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2010
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Cartulaire de l'abbaye de Cîteaux dit Cartulare Antiquum t.2 (2e moitié XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 167 (11 H 67), f. 0032v, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de l'abbaye de Cîteaux dit Cartulare Antiquum t.2 (2e moitié XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 167 (11 H 67), f. 0032v, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
Decentralized and Robust Privacy-Preserving Model Using Blockchain-Enabled Federated Deep Learning in Intelligent Enterprises
Creators: name: Fotohi, Reza
name: Aliee, Fereidoon Shams
name: Farahani, Bahar
Publisher: name: arXiv
Year: 2025
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: In Federated Deep Learning (FDL), multiple local enterprises are allowed to train a model jointly. Then, they submit their local updates to the central server, and the server aggregates the updates to create a global model. However, trained models usually perform worse than centralized models, especially when the training data distribution is non-independent and identically distributed (nonIID). NonIID data harms the accuracy and performance of the model. Additionally, due to the centrality of federated learning (FL) and the untrustworthiness of enterprises, traditional FL solutions are vulnerable to security and privacy attacks. To tackle this issue, we propose FedAnil, a secure blockchain enabled Federated Deep Learning Model that improves enterprise models decentralization, performance, and tamper proof properties, incorporating two main phases. The first phase addresses the nonIID challenge (label and feature distribution skew). The second phase addresses security and privacy concerns against poisoning and inference attacks through three steps. Extensive experiments were conducted using the Sent140, FashionMNIST, FEMNIST, and CIFAR10 new real world datasets to evaluate FedAnils robustness and performance. The simulation results demonstrate that FedAnil satisfies FDL privacy preserving requirements. In terms of convergence analysis, the model parameter obtained with FedAnil converges to the optimum of the model parameter. In addition, it performs better in terms of accuracy (more than 11, 15, and 24%) and computation overhead (less than 8, 10, and 15%) compared with baseline approaches, namely ShieldFL, RVPFL, and RFA.
description: 28 pages, 10 figures, journal
A modified R1 X R1 method for helioseismic rotation inversions
Creators: name: Pijpers, F. P.
name: Thompson, M. J.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an efficient method for two dimensional inversions for the solar rotation rate using the Subtractive Optimally Localized Averages (SOLA) method and a modification of the R1 X R1 technique proposed by Sekii (1993). The SOLA method is based on explicit construction of averaging kernels similar to the Backus-Gilbert method. The versatility and reliability of the SOLA method in reproducing a target form for the averaging kernel, in combination with the idea of the R1 X R1 decomposition, results in a computationally very efficient inversion algorithm. This is particularly important for full 2-D inversions of helioseismic data in which the number of modes runs into at least tens of thousands.
description: 12 pages, Plain TeX + epsf.tex + mn.tex
Scaling Regimes in the Distribution of Galaxies
Creators: name: Murante, G.
name: Provenzale, A.
name: Spiegel, E. A.
name: Thieberger, R.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: If we treat the galaxies in published redshift catalogues as point sets, we may determine the generalized dimensions of such sets by standard means, outlined here. For galaxy separations up to about 5 Mpc, we find the dimensions of the galaxy set to be about 1.2, with not a strong indication of multifractality. For larger scales, out to about 30 Mpc, there is also good scaling with a dimension of about 1.8. For even larger scales, the data seem too sparse to be conclusive, but we find that the dimension is climbing as the scales increase. We report simulations that suggest a rationalization of such measurements, namely that in the intermediate range the scaling behavior is dominated by flat structures (pancakes) and that the results on the smallest scales are a reflection of the formation of density singularities.
description: 13 pages, 4 figures
Chaos from Equivariant Fields on Fuzzy $S^4$
Creators: name: Coskun, U. H.
name: Kurkcuoglu, S.
name: Toga, G. C.
name: Unal, G.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We examine the $5d$ Yang-Mills matrix model in $0+1$-dimensions with $U(4N)$ gauge symmetry and a mass deformation term. We determine the explicit $SU(4)\approx SO(6)$ equivariant parametrizations of the gauge field and the fluctuations about the classical four concentric fuzzy four sphere configuration and obtain the low energy reduced actions(LEAs) by tracing over the $S_F^4$s for the first five lowest matrix levels. The LEA's so obtained have potentials bounded from below indicating that the equivariant fluctuations about the $S_F^4$ do not lead to any instabilities. These reduced systems exhibit chaotic dynamics, which we reveal by computing their Lyapunov exponents.Using our numerical results, we explore various aspects of chaotic dynamics emerging from the LEAs. In particular, we model how the largest Lyapunov exponents change as a function of the energy. We also show that, in the Euclidean signature, the LEAs support the usual kink type soliton solutions, i.e. instantons in $1+0$-dimensions, which may be seen as the imprints of the topological fluxes penetrating the concentric $S_F^4$s due to the equivariance conditions, and preventing them to shrink to zero radius.
description: 44+1 pages, 57 figures, expanded section on chaotic dynamics with new results, published version