cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: The JWST PEARLS View of the El Gordo Galaxy Cluster and of the Structure It Magnifies
Creators: name: Diaz, Carlos
name: Wang, Daniel
Publisher: name: University of Massachusetts Amherst
Year: 2023
Subjects: subject: Astrophysics and Astronomy

description: The massive galaxy cluster El Gordo (z = 0.87) imprints multitudes of gravitationally lensed arcs onto James Webb Space Telescope Near-Infrared Camera (NIRCam) images. Eight bands of NIRCam imaging were obtained in the "Prime Extragalactic Areas for Reionization and Lensing Science" ("PEARLS") program. Point-spread function–matched photometry across Hubble Space Telescope and NIRCam filters supplies new photometric redshifts. A new light-traces-mass lens model based on 56 image multiplicities identifies the two mass peaks and yields a mass estimate within 500 kpc of (7.0 ± 0.30) × 1014M⊙. A search for substructure in the 140 cluster members with spectroscopic redshifts confirms the two main mass components. The southeastern mass peak that contains the brightest cluster galaxy is more tightly bound than the northwestern one. The virial mass within 1.7 Mpc is (5.1 ± 0.60)×1014M⊙, lower than the lensing mass. A significant transverse velocity component could mean the virial mass is underestimated. We contribute one new member to the previously known z = 4.32 galaxy group. Intrinsic (delensed) positions of the five secure group members span a physical extent of ∼60 kpc. 13 additional candidates selected by spectroscopic/photometric constraints are small and faint, with a mean intrinsic luminosity ∼2.2 mag fainter than L*. NIRCam imaging admits a fairly wide range of brightnesses and morphologies for the group members, suggesting a more diverse galaxy population in this galaxy overdensity.
Homotopical Foundations of Parametrized Quantum Spin Systems
Creators: name: Beaudry, Agnes
name: Hermele, Michael
name: Moreno, Juan
name: Pflaum, Markus
name: Qi, Marvin
name: Spiegel, Daniel
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mathematical Physics (math-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Algebraic Topology (math.AT)
subject: Functional Analysis (math.FA)
subject: Operator Algebras (math.OA)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 81Q35, 46N50, 46L30, 55P48

description: In this paper, we present a homotopical framework for studying invertible gapped phases of matter from the point of view of infinite spin lattice systems, using the framework of algebraic quantum mechanics. We define the notion of quantum state types. These are certain lax-monoidal functors from the category of finite dimensional Hilbert spaces to the category of topological spaces. The universal example takes a finite dimensional Hilbert space to the pure state space of the quasi-local algebra of the quantum spin system with this Hilbert space at each site of a specified lattice. The lax-monoidal structure encodes the tensor product of states, which corresponds to stacking for quantum systems. We then explain how to formally extract parametrized phases of matter from quantum state types, and how they naturally give rise to $\mathscr{E}_\infty$-spaces for an operad we call the "multiplicative" linear isometry operad. We define the notion of invertible quantum state types and explain how the passage to phases for these is related to group completion. We also explain how invertible quantum state types give rise to loop-spectra. Our motivation is to provide a framework for constructing Kitaev's loop-spectrum of bosonic invertible gapped phases of matter. Finally, as a first step towards understanding the homotopy types of the loop-spectra associated to invertible quantum state types, we prove that the pure state space of any UHF algebra is simply connected.
description: Minor revisions from v1 and a new appendix with background on operads, E infinity spaces and simplicial sets, as well as additional functional analytic background in section 2
Additional file 4: of Integration of care for hypertension and diabetes: a scoping review assessing the evidence from systematic reviews and evaluating reporting
Creators: name: Yiu, Kristy
name: Rohwer, Anke
name: Young, Taryn
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: PRISMA checklist. Blank template of PRISMA checklist tool. (DOCX 17 kb)
Solving Medium-Density Subset Sum Problems in Expected Polynomial Time: An Enumeration Approach
Creators: name: Wan, Changlin
name: Shi, Zhongzhi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Computational Complexity (cs.CC)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences
subject: F.2.2; G.2.1; G.1.6; I.2.8; E.3

description: The subset sum problem (SSP) can be briefly stated as: given a target integer $E$ and a set $A$ containing $n$ positive integer $a_j$, find a subset of $A$ summing to $E$. The \textit{density} $d$ of an SSP instance is defined by the ratio of $n$ to $m$, where $m$ is the logarithm of the largest integer within $A$. Based on the structural and statistical properties of subset sums, we present an improved enumeration scheme for SSP, and implement it as a complete and exact algorithm (EnumPlus). The algorithm always equivalently reduces an instance to be low-density, and then solve it by enumeration. Through this approach, we show the possibility to design a sole algorithm that can efficiently solve arbitrary density instance in a uniform way. Furthermore, our algorithm has considerable performance advantage over previous algorithms. Firstly, it extends the density scope, in which SSP can be solved in expected polynomial time. Specifically, It solves SSP in expected $O(n\log{n})$ time when density $d \geq c\cdot \sqrt{n}/\log{n}$, while the previously best density scope is $d \geq c\cdot n/(\log{n})^{2}$. In addition, the overall expected time and space requirement in the average case are proven to be $O(n^5\log n)$ and $O(n^5)$ respectively. Secondly, in the worst case, it slightly improves the previously best time complexity of exact algorithms for SSP. Specifically, the worst-case time complexity of our algorithm is proved to be $O((n-6)2^{n/2}+n)$, while the previously best result is $O(n2^{n/2})$.
description: 11 pages, 1 figure
Additional file 3: of Integration of care for hypertension and diabetes: a scoping review assessing the evidence from systematic reviews and evaluating reporting
Creators: name: Yiu, Kristy
name: Rohwer, Anke
name: Young, Taryn
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Molecular Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Science Policy

description: AMSTAR tool. Blank template of AMSTAR tool. (DOCX 13 kb)
Foreground Segmentation Using a Triplet Convolutional Neural Network for Multiscale Feature Encoding
Creators: name: Lim, Long Ang
name: Keles, Hacer Yalim
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: A common approach for moving objects segmentation in a scene is to perform a background subtraction. Several methods have been proposed in this domain. However, they lack the ability of handling various difficult scenarios such as illumination changes, background or camera motion, camouflage effect, shadow etc. To address these issues, we propose a robust and flexible encoder-decoder type neural network based approach. We adapt a pre-trained convolutional network, i.e. VGG-16 Net, under a triplet framework in the encoder part to embed an image in multiple scales into the feature space and use a transposed convolutional network in the decoder part to learn a mapping from feature space to image space. We train this network end-to-end by using only a few training samples. Our network takes an RGB image in three different scales and produces a foreground segmentation probability mask for the corresponding image. In order to evaluate our model, we entered the Change Detection 2014 Challenge (changedetection.net) and our method outperformed all the existing state-of-the-art methods by an average F-Measure of 0.9770. Our source code will be made publicly available at https://github.com/lim-anggun/FgSegNet.
description: This paper is under consideration at Pattern Recognition Letters
title: ADCO, Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VIII, Cart. 192 (11 H 77), 295 folios, f. 0030v
Creators: name: de la Côte d'Or, Archives départementales
name: Petot, Frédéric
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: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VIII, Archives départementales de la Côte-d'Or, Cart. 192 (11 H 77), 295 folios, f. 0030v, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VIII, Archives départementales de la Côte-d'Or, Cart. 192 (11 H 77), 295 folios, f. 0030v, 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
3D models of the objects selected (from YCB set) for the different grasp types in the Anthropomorphic Hand Assessment Protocol (AHAP)
Creators: name: Pérez-González, Antonio
name: Llop-Harillo, Immaculada
Publisher: name: Zenodo
Year: 2019
Subjects: grasping
robotics
3D models

description: This repository contains the 3D models in PLY format of the 24 objects used in the eight different grasp types of the published Anthropomorphic Hand Assessment Protocol (AHAP) (https://doi.org/10.1016/j.robot.2019.103259). The physical objects are from the Yale-CMU-Berkeley Object and Model Set (https://doi.org/10.1109/MRA.2015.2448951). The models were generated with SolidWorks, Blender and 3D scan.
description: This work was supported by the Spanish Ministry of Economy and Competitiveness and ESF [grant number BES-2015-076005]; the Spanish Ministry of Economy and Competitiveness, AEI and ERDF [grant numbers DPI2014-60635-R, DPI2017-89910-R]; and Universitat Jaume I, Spain [grant number UJI-B2017-70].
Magnetism and structure of LixCoO2 and comparison to NaxCoO2
Creators: name: Hertz, J. T.
name: Huang, Q.
name: McQueen, T.
name: Klimczuk, T.
name: Bos, J. W. G.
name: Viciu, L.
name: Cava, R. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The magnetic properties and structure of LixCoO2 for x between 0.5 and 1.0 are reported. Co4+ is found to be high-spin in LixCoO2 for x between 0.94 and 1.0 and low-spin for x between 0.50 and 0.78. Weak antiferromagnetic coupling is observed, increasing in strength as more Co4+ is introduced. At an x value of about 0.65, the temperature-independent contribution to the magnetic susceptibility and the electronic contribution to the specific heat are largest. Neutron diffraction analysis reveals that the lithium oxide layer expands perpendicular to the basal plane and the Li ions displace from their ideal octahedral sites with decreasing x. A comparison of the structures of the NaxCoO2 and LixCoO2 systems reveals that the CoO2 layer changes substantially with alkali content in the former but is relatively rigid in the latter. Further, the CoO6 octahedra in LixCoO2 are less distorted than those in NaxCoO2. We postulate that these structural differences strongly influence the physical properties in the two systems.
The homology of the partition algebras
Creators: name: Boyd, Rachael
name: Hepworth, Richard
name: Patzt, Peter
Publisher: name: arXiv
Year: 2023
Subjects: subject: Algebraic Topology (math.AT)
subject: Geometric Topology (math.GT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 20J06, 16E40 (primary), 20B30 (secondary)

description: We show that the homology of the partition algebras, interpreted as appropriate Tor-groups, is isomorphic to that of the symmetric groups in a range of degrees that increases with the number of nodes. Furthermore, we show that when the defining parameter $δ$ of the partition algebra is invertible, the homology of the partition algebra is in fact isomorphic to the homology of the symmetric group in all degrees. These results parallel those obtained for the Brauer algebras in the authors' earlier work, but with significant differences and difficulties in the inductive resolution and high acyclicity arguments required to prove them. Our results join the growing literature on homological stability for algebras, which now encompasses the Temperley-Lieb, Brauer and partition algebras, as well as the Iwahori-Hecke algebras of types A and B.
description: 23 pages. Final version, to appear in Pacific Journal of Mathematics
Ridge Regression and Provable Deterministic Ridge Leverage Score Sampling
Creators: name: McCurdy, Shannon R.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Statistics Theory (math.ST)
subject: Data Structures and Algorithms (cs.DS)
subject: Computation (stat.CO)
subject: Machine Learning (stat.ML)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Ridge leverage scores provide a balance between low-rank approximation and regularization, and are ubiquitous in randomized linear algebra and machine learning. Deterministic algorithms are also of interest in the moderately big data regime, because deterministic algorithms provide interpretability to the practitioner by having no failure probability and always returning the same results. We provide provable guarantees for deterministic column sampling using ridge leverage scores. The matrix sketch returned by our algorithm is a column subset of the original matrix, yielding additional interpretability. Like the randomized counterparts, the deterministic algorithm provides (1 + ε) error column subset selection, (1 + ε) error projection-cost preservation, and an additive-multiplicative spectral bound. We also show that under the assumption of power-law decay of ridge leverage scores, this deterministic algorithm is provably as accurate as randomized algorithms. Lastly, ridge regression is frequently used to regularize ill-posed linear least-squares problems. While ridge regression provides shrinkage for the regression coefficients, many of the coefficients remain small but non-zero. Performing ridge regression with the matrix sketch returned by our algorithm and a particular regularization parameter forces coefficients to zero and has a provable (1 + ε) bound on the statistical risk. As such, it is an interesting alternative to elastic net regularization.
description: 24 pages, 15 figures. Minor changes such as typos fixed, some background discussion added, references added
AGU Data Leadership, Strategic Direction
Creators: name: Stall, Shelley
name: Erdmann, Chris
Publisher: name: Zenodo
Year: 2021
Subjects: Data Leadership
Data Citation
Software Citation

description: Presented during ESIP Summer 2021 Research Showcase on 21 July 2021 Abstract:  AGU’s Data Leadership program focuses on the value of research data and software as an important contribution to science and as affirmed in AGU Position Statement on Data -- A World Heritage. In collaboration with the AGU community and organizations such as ESIP, AGU works towards the culture change needed for the preservation of research data and software to be a common activity that is well supported by curation resulting in credit and attribution. Join us to learn more about AGU’s Data Leadership program and how to be involved. Resources listed in poster: AGU Position Statement on Data https://www.agu.org/Share-and-Advocate/Share/Policymakers/Position-Statements/Position_Data AGU Data Leadership https://www.agu.org/Learn-About-AGU/About-AGU/Data-Leadership AGU Data and Software for Authors - including Journal Specific Guidance https://www.agu.org/Publish-with-AGU/Publish/Author-Resources/Data-and-Software-for-Authors AGU Blog and Resources - Collaborative GitHub Site https://data.agu.org
Bootstrapping and Multiple Imputation Ensemble Approaches for Missing Data
Creators: name: Khan, Shehroz S.
name: Ahmad, Amir
name: Mihailidis, Alex
Publisher: name: arXiv
Year: 2018
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Presence of missing values in a dataset can adversely affect the performance of a classifier. Single and Multiple Imputation are normally performed to fill in the missing values. In this paper, we present several variants of combining single and multiple imputation with bootstrapping to create ensembles that can model uncertainty and diversity in the data, and that are robust to high missingness in the data. We present three ensemble strategies: bootstrapping on incomplete data followed by (i) single imputation and (ii) multiple imputation, and (iii) multiple imputation ensemble without bootstrapping. We perform an extensive evaluation of the performance of the these ensemble strategies on 8 datasets by varying the missingness ratio. Our results show that bootstrapping followed by multiple imputation using expectation maximization is the most robust method even at high missingness ratio (up to 30%). For small missingness ratio (up to 10%) most of the ensemble methods perform quivalently but better than single imputation. Kappa-error plots suggest that accurate classifiers with reasonable diversity is the reason for this behaviour. A consistent observation in all the datasets suggests that for small missingness (up to 10%), bootstrapping on incomplete data without any imputation produces equivalent results to other ensemble methods.
description: 16 Pages, 15 Tables, 4 Figures
Additional file 2: of Integration of care for hypertension and diabetes: a scoping review assessing the evidence from systematic reviews and evaluating reporting
Creators: name: Yiu, Kristy
name: Rohwer, Anke
name: Young, Taryn
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: ROBIS tool. Blank template of ROBIS tool. (DOCX 16 kb)
Influence of photon-assisted tunneling on heat flow in a normal metal - superconductor tunnel junction
Creators: name: Kopnin, N. B.
name: Taddei, F.
name: Pekola, J. P.
name: Giazotto, F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have investigated theoretically the influence of an AC drive on heat transport in a hybrid normal metal - superconductor tunnel junction in the photon-assisted tunneling regime. We find that the useful heat flux out from the normal metal is always reduced as compared to its magnitude under the static and quasi-static drive conditions. Our results are useful to predict the operative conditions of AC driven superconducting electron refrigerators.
description: 10 pages, 8 colour figures, published version
A posteriori noise estimation in variable data sets
Creators: name: Czesla, S.
name: Molle, T.
name: Schmitt, J. H. M. M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Methodology (stat.ME)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Most physical data sets contain a stochastic contribution produced by measurement noise or other random sources along with the signal. Usually, neither the signal nor the noise are accurately known prior to the measurement so that both have to be estimated a posteriori. We have studied a procedure to estimate the standard deviation of the stochastic contribution assuming normality and independence, requiring a sufficiently well-sampled data set to yield reliable results. This procedure is based on estimating the standard deviation in a sample of weighted sums of arbitrarily sampled data points and is identical to the so-called DER_SNR algorithm for specific parameter settings. To demonstrate the applicability of our procedure, we present applications to synthetic data, high-resolution spectra, and a large sample of space-based light curves and, finally, give guidelines to apply the procedure in situation not explicitly considered here to promote its adoption in data analysis.
description: Accepted for publication in A&A
Low-frequency quantum oscillations in LaRhIn$_5$: Dirac point or nodal line?
Creators: name: Mikitik, G. P.
name: Sharlai, Yu. V.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In the recent paper [1], a new method based on measuring a temperature correction to a quantum-oscillation frequency was proposed to study an energy-band dispersion of charge carriers in small Fermi surface (FS) pockets of crystals. To illustrate their approach, Guo et al. [1] applied it to a number of materials and, in particular, to the multiband metal LaRhIn$_5$ which, apart from high-frequency oscillations associated with a large FS, also exhibits the oscillations with the low frequency $F\approx 7$ T. Although the method of Ref. [1] really detects charge carriers with a linear dispersion, it does not distinguish between the carriers near a Dirac point and near a nodal line, since all such quasiparticles disperse linearly. Here we ask what is the nature of the carriers associated with the frequency $F$ in LaRhIn$_5$ and call attention to the puzzling origin of this frequency.
description: This is matters arising from C. Guo et al. Nature Communications 12, 6213 (2021); 6 pages, 2 figures
title: Systems Support For Efficient State-Machine Replication
Creators: name: Habiger, Gerhard
name: Hauck, Franz J.
Publisher: name: Gesellschaft für Informatik e.V.
Year: 2019
Subjects: subject: State-Machine Replication
subject: Fault Tolerance
subject: Deterministic Multithreading
subject: Deterministic Checkpointing
subject: Consensus

description: State-Machine Replication (SMR) is a well known approach for the deployment of highly fault-tolerant services. Recent research has focused on efficiency improvements, performance optimisation and novel approaches to underlying concepts of SMR, such as consensus with trusted components, dynamic weights for quorums, or parallelisation of application code. To increase adoption of SMR as a basic fault-tolerance technique, we see the need to improve the current state of the art of SMR even further, and provide four specific ways in which our research contributes to this goal. In particular, we present two approaches which make the development and deployment of SMR services both easier and more efficient, and talk about two further areas of improvement concerning internal mechanisms of common SMR architectures. The goal of this paper is to provide our current understanding of important issues of current SMR systems as well as to outline possible future solutions to them.
Optimal investment in ambiguous financial markets with learning
Creators: name: Bäuerle, Nicole
name: Mahayni, Antje
Publisher: name: arXiv
Year: 2023
Subjects: subject: Portfolio Management (q-fin.PM)
subject: FOS: Economics and business

description: We consider the classical multi-asset Merton investment problem under drift uncertainty, i.e. the asset price dynamics are given by geometric Brownian motions with constant but unknown drift coefficients. The investor assumes a prior drift distribution and is able to learn by observing the asset prize realizations during the investment horizon. While the solution of an expected utility maximizing investor with constant relative risk aversion (CRRA) is well known, we consider the optimization problem under risk and ambiguity preferences by means of the KMM (Klibanoff et al. (2005)) approach. Here, the investor maximizes a double certainty equivalent. The inner certainty equivalent is for given drift coefficient, the outer is based on a drift distribution. Assuming also a CRRA type ambiguity function, it turns out that the optimal strategy can be stated in terms of the solution without ambiguity preferences but an adjusted drift distribution. To the best of our knowledge an explicit solution method in this setting is new. We rely on some duality theorems to prove our statements.
 Based on our theoretical results, we are able to shed light on the impact of the prior drift distribution as well as the consequences of ambiguity preferences via the transfer to an adjusted drift distribution, i.e. we are able to explain the interaction of risk and ambiguity preferences. We compare our results with the ones in a pre-commitment setup where the investor is restricted to deterministic strategies. It turns out that (under risk and ambiguity aversion) an infinite investment horizon implies in both cases a maximin decision rule, i.e. the investor follows the worst (best) Merton fraction (over all realizations of it) if she is more (less) risk averse than a log-investor. We illustrate our findings with an extensive numerical study.
Experimental implementation of the optical fractional Fourier transform in the time-frequency domain
Creators: name: Niewelt, Bartosz
name: Jastrzębski, Marcin
name: Kurzyna, Stanisław
name: Nowosielski, Jan
name: Wasilewski, Wojciech
name: Mazelanik, Mateusz
name: Parniak, Michał
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The fractional Fourier transform (FrFT), a fundamental operation in physics that corresponds to a rotation of phase space by any angle, is also an indispensable tool employed in digital signal processing for noise reduction. Processing of optical signals in their time-frequency degree of freedom bypasses the digitization step and presents an opportunity to enhance many protocols in quantum and classical communication, sensing and computing. In this letter, we present the experimental realization of the fractional Fourier transform in the time-frequency domain using an atomic quantum-optical memory system with processing capabilities. Our scheme performs the operation by imposing programmable interleaved spectral and temporal phases. We have verified the FrFT by analyses of chroncyclic Wigner functions measured via a shot-noise limited homodyne detector. Our results hold prospects for achieving temporal-mode sorting, processing and super-resolved parameter estimation.
description: 6 pages, 4 figures
Pseudocontact shifts and paramagnetic susceptibility in semiempirical and quantum chemistry theories
Creators: name: Parigi, Giacomo
name: Benda, Ladislav
name: Ravera, Enrico
name: Romanelli, Maurizio
name: Luchinat, Claudio
Publisher: name: arXiv
Year: 2018
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Pseudocontact shifts are traditionally described as a function of the anisotropy of the paramagnetic susceptibility tensor, according to the semiempirical theory mainly developed by Kurland and McGarvey (R.J. Kurland and B.R. McGarvey, J. Magn. Reson. 2, 286 (1970)). The paramagnetic susceptibility tensor is required to be symmetric. Applying point-dipole approximation to the quantum chemistry theory of hyperfine shift, pseudocontact shifts are found to scale with a non-symmetric tensor that differs by a factor g/ge from the paramagnetic susceptibility tensor derived within the semiempirical framework. We analyze the foundations of the Kurland-McGarvey pseudocontact shift expression and recall that it is inherently based on the Russell-Saunders (LS) coupling approximation for the spin-orbit coupling. We show that the difference between the semiempirical and quantum chemistry pseudocontact shift expressions arises directly from the different treatment of the orbital contribution to the hyperfine coupling.
Atom Interferometry tests of the isotropy of post-Newtonian gravity
Creators: name: Mueller, Holger
name: Chiow, Sheng-wey
name: Herrmann, Sven
name: Chu, Steven
name: Chung, Keng-Yeow
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present a test of the local Lorentz invariance of post-Newtonian gravity by monitoring Earth's gravity with a Mach-Zehnder atom interferometer that features a resolution of about 8*10^(-9)g/Hz^(1/2), the highest reported thus far. Expressed within the standard model extension (SME) or Nordtvedt's anisotropic universe model, the analysis limits four coefficients describing anisotropic gravity at the ppb level and three others, for the first time, at the 10ppm level. Using the SME we explicitly demonstrate how the experiment actually compares the isotropy of gravity and electromagnetism.
description: Added outlook, corrected typos; to appear in PRL. 4 pages, 3 figures
Additional file 1: of Integration of care for hypertension and diabetes: a scoping review assessing the evidence from systematic reviews and evaluating reporting
Creators: name: Yiu, Kristy
name: Rohwer, Anke
name: Young, Taryn
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Search strategies. Search strategies for EMBASE, MEDLINE, Cochrane Library, Health Evidence. (DOCX 18 kb)
Feature-Conditioned Cascaded Video Diffusion Models for Precise Echocardiogram Synthesis
Creators: name: Reynaud, Hadrien
name: Qiao, Mengyun
name: Dombrowski, Mischa
name: Day, Thomas
name: Razavi, Reza
name: Gomez, Alberto
name: Leeson, Paul
name: Kainz, Bernhard
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Image synthesis is expected to provide value for the translation of machine learning methods into clinical practice. Fundamental problems like model robustness, domain transfer, causal modelling, and operator training become approachable through synthetic data. Especially, heavily operator-dependant modalities like Ultrasound imaging require robust frameworks for image and video generation. So far, video generation has only been possible by providing input data that is as rich as the output data, e.g., image sequence plus conditioning in, video out. However, clinical documentation is usually scarce and only single images are reported and stored, thus retrospective patient-specific analysis or the generation of rich training data becomes impossible with current approaches. In this paper, we extend elucidated diffusion models for video modelling to generate plausible video sequences from single images and arbitrary conditioning with clinical parameters. We explore this idea within the context of echocardiograms by looking into the variation of the Left Ventricle Ejection Fraction, the most essential clinical metric gained from these examinations. We use the publicly available EchoNet-Dynamic dataset for all our experiments. Our image to sequence approach achieves an $R^2$ score of 93%, which is 38 points higher than recently proposed sequence to sequence generation methods. Code and models will be available at: https://github.com/HReynaud/EchoDiffusion.
description: Published in MICCAI 2023 proceedings. https://link.springer.com/chapter/10.1007/978-3-031-43999-5_14
Exact Wave Solutions to 6D Gauged Chiral Supergravity
Creators: name: Tolley, Andrew J.
name: Burgess, C. P.
name: de Rham, Claudia
name: Hoover, D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We describe a broad class of time-dependent exact wave solutions to 6D gauged chiral supergravity with two compact dimensions. These 6D solutions are nontrivial warped generalizations of 4D pp-waves and Kundt class solutions and describe how a broad class of previously-static compactifications from 6D to 4D (sourced by two 3-branes) respond to waves moving along one of the uncompactified directions. Because our methods are generally applicable to any higher dimensional supergravity they are likely to be of use for finding the supergravity limit of time-dependent solutions in string theory. The 6D solutions are interesting in their own right, describing 6D shock waves induced by high energy particles on the branes, and as descriptions of the near-brane limit of the transient wavefront arising from a local bubble-nucleation event on one of the branes, such as might occur if a tension-changing phase transition were to occur.
description: 22 pages, 1 figure. Minor clarifications added. Accepted in JHEP
Formal Verification of Probabilistic SystemC Models with Statistical Model Checking
Creators: name: Ngo, Van Chan
name: Legay, Axel
Publisher: name: arXiv
Year: 2017
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Transaction-level modeling with SystemC has been very successful in describing the behavior of embedded systems by providing high-level executable models, in which many of them have inherent probabilistic behaviors, e.g., random data and unreliable components. It thus is crucial to have both quantitative and qualitative analysis of the probabilities of system properties. Such analysis can be conducted by constructing a formal model of the system under verification and using Probabilistic Model Checking (PMC). However, this method is infeasible for large systems, due to the state space explosion. In this article, we demonstrate the successful use of Statistical Model Checking (SMC) to carry out such analysis directly from large SystemC models and allow designers to express a wide range of useful properties. The first contribution of this work is a framework to verify properties expressed in Bounded Linear Temporal Logic (BLTL) for SystemC models with both timed and probabilistic characteristics. Second, the framework allows users to expose a rich set of user-code primitives as atomic propositions in BLTL. Moreover, users can define their own fine-grained time resolution rather than the boundary of clock cycles in the SystemC simulation. The third contribution is an implementation of a statistical model checker. It contains an automatic monitor generation for producing execution traces of the model-under-verification (MUV), the mechanism for automatically instrumenting the MUV, and the interaction with statistical model checking algorithms.
description: Journal of Software: Evolution and Process. Wiley, 2017. arXiv admin note: substantial text overlap with arXiv:1507.08187
Wald's entropy is equal to a quarter of the horizon area in units of the effective gravitational coupling
Creators: name: Brustein, Ram
name: Gorbonos, Dan
name: Hadad, Merav
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Bekenstein-Hawking entropy of black holes in Einstein's theory of gravity is equal to a quarter of the horizon area in units of Newton's constant. Wald has proposed that in general theories of gravity the entropy of stationary black holes with bifurcate Killing horizons is a Noether charge which is in general different from the Bekenstein-Hawking entropy. We show that the Noether charge entropy is equal to a quarter of the horizon area in units of the effective gravitational coupling on the horizon defined by the coefficient of the kinetic term of specific graviton polarizations on the horizon. We present several explicit examples of static spherically symmetric black holes.
description: 20 pages ; added clarifications, explanations, new section on the choice of polarizations, results unchanged; replaced with published version
High-pressure insulator-to-metal transition in Sr$_3$Ir$_2$O$_7$ studied by x-ray absorption spectroscopy
Creators: name: Donnerer, C.
name: Sala, M. Moretti
name: Pascarelli, S.
name: Rosa, A. D.
name: Andreev, S. N.
name: Mazurenko, V. V.
name: Irifune, T.
name: Hunter, E. C.
name: Perry, R. S.
name: McMorrow, D. F.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: High-pressure x-ray absorption spectroscopy was performed at the Ir $L_3$ and $L_2$ absorption edges of Sr$_3$Ir$_2$O$_7$. The branching ratio of white line intensities continuously decreases with pressure, reflecting a reduction in the angular part of the expectation value of the spin-orbit coupling operator, $\left\langle {\bf L} \cdot {\bf S} \right\rangle$. Up to the high-pressure structural transition at 53 GPa, this behavior can be explained within a single-ion model, where pressure increases the strength of the cubic crystal field, which suppresses the spin-orbit induced hybridization of $J_{\text{eff}} = 3/2$ and $e_g$ levels. We observe a further reduction of the branching ratio above the structural transition, which cannot be explained within a single-ion model of spin-orbit coupling and cubic crystal fields. This change in $\left\langle {\bf L} \cdot {\bf S} \right\rangle$ in the high-pressure, metallic phase of Sr$_3$Ir$_2$O$_7$ could arise from non-cubic crystal fields or a bandwidth-driven hybridization of $J_{\text{eff}}=1/2,\,3/2$ states, and suggests that the electronic ground state significantly deviates from the $J_{\text{eff}}=1/2$ limit.
description: 8 pages, 5 figures
Modeling and forecasting age-specific drug overdose mortality in the United States
Creators: name: Böttcher, Lucas
name: Chou, Tom
name: D'Orsogna, Maria R.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Applications (stat.AP)
subject: Populations and Evolution (q-bio.PE)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Drug overdose deaths continue to increase in the United States for all major drug categories. Over the past two decades the total number of overdose fatalities has increased more than five-fold; since 2013 the surge in overdose rates is primarily driven by fentanyl and methamphetamines. Different drug categories and factors such as age, gender, and ethnicity are associated with different overdose mortality characteristics that may also change in time. For example, the average age at death from a drug overdose has decreased from 1940 to 1990 while the overall mortality rate has steadily increased. To provide insight into the population-level dynamics of drug-overdose mortality, we develop an age-structured model for drug addiction. Using an augmented ensemble Kalman filter (EnKF), we show through a simple example how our model can be combined with synthetic observation data to estimate mortality rate and an age-distribution parameter. Finally, we use an EnKF to combine our model with observation data on overdose fatalities in the United States from 1999 to 2020 to forecast the evolution of overdose trends and estimate model parameters.
description: 10 pages, 4 figures
DResSUP for Librarians
Creators: name: Borovsky
Publisher: name: Zenodo
Year: 2016

description: The UCLA Library’s Core DResSUP team (Borovsky, Broadwell, Childress, Horning, and Rutkowski) proposes to teach a continuing education program for librarians that gradually integrates them into a program we developed for UCLA graduate students. DResSUP stands for Digital Research StartUp Partnerships. Our proposal is designed to prepare librarians as active partners in the digital research process by introducing them to tools and methods that are increasingly important to advanced research. Our proposal builds capacity in the library for supporting digital research in a way that is sustainable over the long term. We envision that librarians we train will become members of our dynamic, cross-unit team, working with us to support digital research. The training program will take a project-based approach, building skills while working on a digital research project related to the LA Times Photographic Archive. The research for this proposal tests whether this approach is an effective way for librarians to develop the skills that allow them to effectively engage with digital researchers. In addition, librarian partners will assist with teaching workshops, thus gaining pedagogical skills they can immediately put to use in their work. Finally, these librarians will be working on a team-based digital research project that they can publish online and present to their colleagues. Based on the assessments that we will conduct as part of this proposal, we plan to submit an IMLS grant proposal to further expand the project to more graduate students as well as librarians.
description: Funded by LAUC: Librarian Association of the University of California
Cohomogeneity one manifolds and selfmaps of nontrivial degree
Creators: name: Puettmann, Thomas
Publisher: name: arXiv
Year: 2007
Subjects: subject: Differential Geometry (math.DG)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 57S15, 55M25

description: We construct natural selfmaps of compact cohomgeneity one manifolds with finite Weyl group and compute their degrees and Lefschetz numbers. On manifolds with simple cohomology rings this yields in certain cases relations between the order of the Weyl group and the Euler characteristic of a principal orbit. We apply our construction to the compact Lie group SU(3) where we extend identity and transposition to an infinite family of selfmaps of every odd degree. The compositions of these selfmaps with the power maps realize all possible degrees of selfmaps of SU(3).
description: v2, v3: minor improvements
Lettre de Guillaume Dubois de Rochefort à Jean-François Séguier, 1773-04-24
Creators: name: Rochefort, Guillaume Dubois de
name: De Rochefort, Guillaume Dubois
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2021
Subjects: Antiquités (général)
Epigraphie

description: [transcription] Paris, le 24 avril 1773.

Monsieur et cher confrère,

Monsieur Duvernet qui est parti depuis deux jours pour Nîmes vous porte les deux volumes de Monsieur Guettard, les inscriptions de Monsieur l'abbé Le Blond et le paquet que vous attendez depuis si longtemps. Je comptais lui remettre aussi une lettre pour vous mais il est parti plus tôt que je ne croyais. Monsieur Duvernet, comme vous le savez, était le beau-frère et l'ami de l'ami que nous avons perdu. Il ne se contentera pas de vous envoyer de dont il est chargé pour vous, il se fera honneur et plaisir de voir un homme si modeste, si savant et si estimable dont je lui aie tant parlé. Quoi que peu versé dans l'étude des antiquités, il ne négligera certainement pas, malgré ses affaires, de voir les monuments curieux que votre ville renferme. Je vous demande pour lui, Monsieur et cher confrère, une part de cette complaisance et de cette amitié dont vous honoriez son beau-frère. Je lui envierai le bonheur dont il va jouir, si ce bonheur n'était corrompu par le souvenir le plus amer et par des regrets aussi légitimes que sincères.

J'ai l'honneur d'être, avec un respectueux attachement,

Monsieur et cher confrère,

Votre très humble et très obéissant serviteur.

De Rochefort
description: [personnes citées] Gaspard Michel abbé Leblond, Jean Etienne Guettard, M. (marchand) Duvernet
description: Source: [lieu de Conservation] Nîmes, Bibliothèque Carré d'Art [cote]ms. 147_17, fol. 197
description: Source: ark:/12148/btv1b100153052
Entwicklung von Aufgaben für selbstständigkeitsorientierte Lernsituationen zur Förderung von Grundvorstellungen zu Funktionen im bilingualen Fachunterricht
Creators: name: Lullies, Dirk
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Mathematikdidaktik
subject: Lernaufgaben
subject: SOL
subject: CLIL
subject: Bilingualer Fachunterricht
subject: Grundvorstellungen
subject: EMILE
subject: Französisch
subject: 300 Sozialwissenschaften::370 Bildung und Erziehung::370 Bildung und Erziehung
subject: 300 Sozialwissenschaften::370 Bildung und Erziehung::373 Sekundarbildung
subject: 500 Naturwissenschaften und Mathematik::510 Mathematik::510 Mathematik

description: Schwerpunkt dieser Masterarbeit ist die Entwicklung einer CLIL-Lernaufgabe zur Förderung von Grundvorstellungen zu Funktionen (in der Zielsprache Französisch). Exemplarisch wurde die Fiktion der Weltraumreise eines Milliardärs als motivierender Aufhänger gewählt. Die Entwicklung der Lernaufgabe lässt sich zugleich als theoriebasiertes Modellvorgehen zur Entwicklung selbstständigkeitsorientierter Lernsituationen im bilingualen CLIL-Sachfachunterricht lesen. Wie in CLIL-Kontexten üblich, steht nicht nur das Sachfach, sondern auch die Zielsprache im Fokus der didaktischen Analyse. Da diese bei CLIL vor allem implizit mitgelernt wird, sind Aktivitäten besonders lernförderlich, die gleichzeitig auf fachliche Kompetenzen und Sprachkompetenzen fokussieren. Mit Blick auf Lernaufgaben im Mathematikunterricht werden ferner in der Fachliteratur genannte Struktureigenschaften und Qualitätsansprüche so zusammengefasst, dass sich daraus ein praktikables Instrument mit Kompatibilität zu CLIL ergibt. Dabei zeigt sich, dass diese Umsetzungsprinzipien – trotz dem Fokus auf das Sachfach – insgesamt auch sprachförderlich wirken und daher sehr gut zu CLIL passen.