cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Integrated ultrasonic imaging for inspection of near-surface defects in safety-critical components
Creators: name: Zhang, Chao
Publisher: name: Imperial College London
Year: 2018

description: A common location for defects to appear is at the surface of a component. While at the near surface, many non-destructive evaluation (NDE) techniques are available to inspect for these, at the far surface this is much more challenging. Ultrasonic array imaging is proposed to enable far surface defect detection, location and characterisation. In this thesis, array imaging is explored for the practical application of subsurface imaging and characterisation of the near backwall defects, especially surface-breaking cracks. In this application, the component has two parallel surfaces, the crack is initiated from the far side and the phased array is attached on the near side. One specific challenge here is the presence of a strong reflection from the backwall, which can often mask the relatively small response from a defect. Ideally, a pure scattered field from a defect is needed for the correct estimation of the scatterer through the imaging algorithm, thus, the presence of the backwall will result in strong effects in the resulting image. Several post-processing methods, which have to be used together with specific imaging algorithms, are developed in this thesis to eliminate the strong effects introduced by the presence of the backwall. The effectiveness of these proposed methods are validated in both simulations and experiments. In this thesis, the Factorization Method (FM) is explored for the application of subsurface imaging and characterisation of the surface-breaking cracks. The performance of the FM algorithm and relevant backwall effects eliminating methods were tested with the simulated and experimental data. The experimental results showed a good consistency with the simulated results. It is shown that the FM algorithm can generate high quality images to provide a good detection of the crack and an accurate sizing of the crack length. The quality of the array imaging highly depends on the imaging algorithm used. One way to make array imaging more applicable is to extend the library of the imaging algorithms. Based on this aim we study the application of two innovative imaging algorithms, i.e. the Direst Sampling Method and the Fast Topological Imaging, in ultrasonic array imaging. Firstly, these imaging algorithms are tested with numerical simulations to image different type of defect. After that, several experiments are performed to assess their performance in practice. The development of the backwall effect eliminating methods is based on the assumption that the backwall is perfectly smooth. However, for real components experiencing harsh environments, the surfaces are rarely perfectly smooth. Therefore, the developed backwall eliminating methods are also validated on components with a rough backwall to check the tolerance to the roughness.
Quasi-Newton methods for minimizing a quadratic function subject to uncertainty
Creators: name: Peng, Shen
name: Canessa, Gianpiero
name: Ek, David
name: Forsgren, Anders
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 90C20, 90C53, 90C15

description: We investigate quasi-Newton methods for minimizing a strictly convex quadratic function which is subject to errors in the evaluation of the gradients. The methods all give identical behavior in exact arithmetic, generating minimizers of Krylov subspaces of increasing dimensions, thereby having finite termination. A BFGS quasi-Newton method is empirically known to behave very well on a quadratic problem subject to small errors. We also investigate large-error scenarios, in which the expected behavior is not so clear. In particular, we are interested in the behavior of quasi-Newton matrices that differ from the identity by a low-rank matrix, such as a memoryless BFGS method. Our numerical results indicate that for large errors, a memory-less quasi-Newton method often outperforms a BFGS method. We also consider a more advanced model for generating search directions, based on solving a chance-constrained optimization problem. Our results indicate that such a model often gives a slight advantage in final accuracy, although the computational cost is significantly higher.
2 um Narrow-Band Imaging of the Sagittarius D H II region
Creators: name: Blum, R. D.
name: Damineli, A.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present 2 um narrow-band images of the core H II region in the Galactic star forming region Sagittarius D. The emission-line images are centered on 2.17 um (Brgamma) and 2.06 um (He I). The H II region appears at the edge of a well defined dark cloud, and the morphology suggests a blister geometry as pointed out in earlier radio continuum work. There is a deficit of stars in general in front of the associated dark cloud indicating the H II region is located in-between the Galactic center and the sun. The lesser spatial extent of the He I line emission relative to Brgamma places the effective temperature of the ionizing radiation field below 40,000 K. The He I 2.06 um to Brgamma ratio and Brgamma / far infrared dust emission put Teff at about 36,500 K to 40,000 K as derived from ionization models.
description: 23 pages, 12 figures, AASTEX, ApJ accepted
Palaeoenvironmental analysis of British Lower Jurassic epicontinental seas
Creators: name: Jordan, Naomi
Publisher: name: Imperial College London
Year: 2016

description: The lower Jurassic Blue Lias Formation of southern Britain is a classic epicontinental sea deposit preserving cyclical sedimentation, organic-rich black shale deposits, and is important for its palaeontological finds. This thesis investigates the environment during the time of deposition, integrating results from computer simulations and detailed fieldwork. Results show a cyclically oxygenated marine environment with episodic, high energy deposition. Bioclasts and ichnofauna differ between lithology types showing changes in benthic environment, controlled by temperature- and salinity-induced stratification, with variations up-section affected by large-scale climatic changes and water depth. Carbonate material, sourced from transported muds and aragonitic bioclasts, formed diagenetic limestones whose textures are controlled by porosity and, more recently, weathering through differences in cementation. Stratification is primarily controlled by water depth, with wind flux and heat flux impacting mixing; haloclines are more resistant to mixing than thermoclines. It is very difficult to maintain permanent stratification, so most black shales probably formed under short-term stratification. A new model for aragonite preservation in a cyclically oxygenated carbonate environment is also presented, along with a detailed log showing both the primary lithologies and diagenetic overprint, plus an updated ledge map for the Lyme Regis foreshore.
Experimental and numerical studies of droplet impact on flowing liquid films
Creators: name: Adebayo, Idris Tayo
Publisher: name: Imperial College London
Year: 2018

description: Droplet impact on flowing liquid films constitutes an important research area due to its manifold applications both in industry and day-to-day living. Previous studies have, however, ignored the contributions of stochastic waves to the drop impact dynamics. In this project, an experimental study of droplet impact on controlled flowing liquid films is carried out. The aim of the study is to provide an understanding of the contributions of the spatial structures of waves to drop impact dynamics on flowing films. The experimental facility consists of a falling film rig which comprises film flow, film control, and droplet-generation units, as well as a high-speed imaging system. In a preliminary study, the effect of film control on the dominant wave propagation modes is investigated. Two classes of waves are identified, namely the gamma I and II wave families, which are characterised both qualitatively and quantitatively and confirmed to be in good agreement with previous studies in the literature. Studies on the interaction patterns between doubly-excited planar pulse waves on an uncontrolled flowing film surface are then carried out to provide insight into the interaction patterns of waveforms on flowing liquid films. Distinct interaction modes are found to be of central importance to understanding the complex wave interactions which could lead to interfacial ‘turbulence’. The effect of film control on the impact dynamics of both low and high-inertia drops is then studied. In both studies, the impact surface is divided into the “wave hump”, “flat film”, and “capillary waves” regions. For low-inertia drop impacts, film control is observed to have a qualitative and quantitative effect on the length of liquid columns formed in a partial coalescence outcome, the pinch-off time, as well as the size of the ejected daughter droplets. Qualitative differences included a complete change of the outcome, with other outcomes such as ‘bouncing’, ‘sliding’, and ‘total coalescence’ observed in the low-inertia drop impact scenario. For high-inertia drop impacts, the effect of film control is studied in the morphology of the crown produced in a splash outcome as well as the distinctive attributes of the ejected droplets. Significant quantitative differences are observed in the features of the crown such as its structure, diameter, height, wall thickness, facing-direction, coalescing time, and baseline propagation modes, as well as the number and size distribution of the ejected secondary droplets. Finally, numerical studies of the flow situations investigated experimentally are also carried out using two novel codes, one using interface-capturing and adaptive, unstructured meshes, the other employing a hybrid interface-tracking/level-set technique on structured meshes. The numerical results obtained show very good agreement with the experimental studies both qualitatively and quantitatively.
New edge activity and anomaly detection in a large computer network
Creators: name: Metelli, Silvia
Publisher: name: Imperial College London
Year: 2018

description: Computer networks are complex systems, and dynamically monitoring their structure in search for anomalies is both a challenging and important task for cyber security. In a computer network, new edges are connections from a host or client to a computer or server that has not been connected to before and can provide strong statistical evidence for detecting anomalies. However, performing meaningful anomaly detection on the arrivals of new edges is non-trivial as new edges can be indicative of both legitimate and illegitimate activity and occur with a considerable heterogeneity between network hosts. This thesis presents a framework aimed at modelling normal new edge activity and performing anomaly detection in a large computer network graph. Specifically, the main contribution consists of a Bayesian method for modelling the intensity of new edges, simultaneously addressing the rate of occurrence of new edges and any underlying latent structural relationship between the clients and servers in the network. What constitutes normal behaviour for some hosts might be very unusual for some others and so examining existing network structure is key for accurately predicting likely future interactions. For this purpose, a notion of similarity between clients and servers is developed, first under hard-thresholding with a clustering model, and then extended to soft-thresholding in a flexible latent feature space. Finally, the model is used to construct an anomaly detection method, which successfully identifies some known compromised machines when demonstrated on real computer network data.
Crisis in Cosmology : Observational Constraints on Omega and H_0
Creators: name: Bagla, J. S.
name: Padmanabhan, T.
name: Narlikar, J. V.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Thanks to new technology of observations and fresh inputs from particle physics, cosmology has advanced on both observational and theoretical fronts. It is therefore opportune that we take stock of the cosmological situation today and examine the observational and theoretical constraints as they are now. The bottom line in this review is that despite the availability of the cosmological constant as an extra parameter for flat Friedmann models, the allowed parameter space for such models is very small. The observations that we consider here include the ages of globular clusters, measurement of Hubble's constant, abundance of rich clusters of galaxies, fraction of mass contributed by baryons in rich clusters and abundance of high redshift objects.
description: 11 pages, normal TeX, 3 figures appended as uuencoded postscript files
Nonexistence and existence of fillable contact structures on 3-manifolds
Creators: name: Ding, Fan
name: Li, Youlin
name: Wu, Zhongtao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Geometric Topology (math.GT)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics

description: In the first part of this paper, we construct infinitely many hyperbolic closed 3-manifolds which admit no symplectic fillable contact structure. All these 3-manifolds are obtained by Dehn surgeries along L-space knots or L-space two-component links. In the second part of this paper, we show that Dehn surgeries along certain knots and links, including those considered in the first part, admit Stein fillable contact structures as long as the surgery coefficients are sufficiently large. This provides some new evidence for the high surgery conjecture raised by Stipsicz.
description: 38 pages, 13 figures. Accepted version
Ordered Peptide-based Assemblies as Functional Materials.pdf
Creators: name: Kaur, Gagandeep
Publisher: name: figshare
Year: 2021
Subjects: subject: 90301 Biomaterials
subject: FOS: Medical engineering

description: My doctoral research involved the design and implementation of synthetic self-assembling biomaterials composed of small peptides and polymers, their utilization in biology and nanotechnology applications.
Fundamental classes of ambit fields in space and space-time: theory, simulation and statistical inference
Creators: name: Nguyen, Michele
Publisher: name: Imperial College London
Year: 2017

description: With their origins in turbulence modelling, ambit fields have recently been presented as a new modelling framework. Since many subclasses studied in the literature have been restricted to the temporal setting, we focus on three classes of ambit fields in space and space-time: the spatio-temporal Ornstein-Uhlenbeck (STOU), the mixed STOU (MSTOU) and the volatility modulated moving average (VMMA) processes. Through the STOU and MSTOU processes, we examine how the spatio-temporal covariances of an ambit field are affected by our choice of the integration sets and the Lévy bases. Through the VMMA, we see how introducing stochastic volatility caters for spatial heteroskedasticity. That is, changing variances and covariances over space. In this thesis, we not only derive the theoretical properties of the models but also develop simulation and inference techniques. Discrete convolution approximations of the fields and compound Poisson approximations of the Lévy bases are used in the design of our simulation algorithms and the mean squared errors involved are derived. Moments-based methods are used for estimation and estimator properties such as consistency are established. In the case of a Gaussian STOU process, interval estimation is considered through pairwise composite likelihood methods and Monte Carlo confidence intervals. The practical relevance of our models is further illustrated using radiation anomaly and sea surface temperature anomaly data. The STOU, MSTOU and VMMA each capture a different, key aspect of the more general ambit field. It is hoped that by studying their theory, simulation and statistical inference methods, we can build a more holistic view of the general setting.
Property-Map B osler Tract 26th Sheridan Sts Laramie, Wyo
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: subject: Maps
subject: Wyoming
subject: Albany County
subject: Laramie

description: The exact date of this map is unknown; the maps in this collection were made in the 1950s and 1960s.
Additional file 1: of An Internet-based Acceptance and Commitment Therapy intervention for older adults with anxiety complaints: study protocol for a cluster randomized controlled trial
Creators: name: Witlox, Maartje
name: Vivivan Kraaij
name: Garnefski, Nadia
name: Waal, Margot De
name: Smit, Filip
name: Hoencamp, Erik
name: Jacobijn Gussekloo
name: Bohlmeijer, Ernst
name: Spinhoven, Philip
Publisher: name: figshare
Year: 2018
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Science Policy

description: Spirit Checklist. (DOC 121 kb)
Upupa eremita Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Upupiformes
Upupidae
Upupa
Upupa eremita

description: Upupa eremita [spec. nov.]
U. viridis, capite flavo, cervice jubata.
Corvus sylvaticus. Gesn. av. 351. Aldr. orn. l. 19. c. 57.
Eremita montanus helveticus. Alb. av. 3. p. 16. t. 16.
Habitat in Helvetia.
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 118, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Kinematic generation of Darboux cyclides
Creators: name: Lubbes, Niels
name: Schicho, Josef
Publisher: name: arXiv
Year: 2018
Subjects: subject: Algebraic Geometry (math.AG)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 14J26, 53A17, 53A05

description: We state a relation between two families of lines that cover a quadric surface in the Study quadric and two families of circles that cover a Darboux cyclide.
The Optical Gravitational Lensing Experiment. Short Distance Scale to the LMC
Creators: name: Udalski, A.
name: Pietrzynski, G.
name: Wozniak, P.
name: Szymanski, M.
name: Kubiak, M.
name: Zebrun, K.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present {\it UBVI} photometry of the eclipsing binary HV2274 - the system which has been recently used for distance determination to the LMC by Guinan et al. (1998). We determine the interstellar reddening to the star, E(B-V)=0.149+/-0.015 mag, based on observed colors of the star. This value is in excellent agreement with the mean reddening towards HV2274 obtained from photometry of the red clump stars in the surrounding field. The reddening is almost twice as large as determined by Guinan et al. (1998). We discuss the consequences of reddening underestimate. Most likely HV2274 is located much closer with the distance modulus to the star and the LMC: m-M = 18.22+/-0.13 mag supporting the short distance scale to the LMC. Such a distance modulus is in excellent agreement with the recent distance determinations with RR Lyr and red clump stars.
description: 11 pages, Latex, 2 Figures. Accepted for publication in Astrophysical Journal Letters. New version - trimmed to fit ApJL. Additional determination of the reddening towards HV2274 with OB stars
Efficient spectrum prediction and inverse design for plasmonic waveguide systems based on artificial neural networks
Creators: name: Zhang, Tian
name: Wang, Jia
name: Liu, Qi
name: Zhou, Jinzhan
name: Dai, Jian
name: Han, Xu
name: Li, Jianqiang
name: Zhou, Yue
name: Xu, Kun
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this article, we propose a novel approach to achieve spectrum prediction, parameter fitting, inverse design and performance optimization for the plasmonic waveguide coupled with cavities structure (PWCCS) based on artificial neural networks (ANNs). The Fano resonance and plasmon induced transparency effect originated from the PWCCS have been selected as illustrations to verify the effectiveness of ANNs. We use the genetic algorithm to design the network architecture and select the hyper-parameters for ANNs. Once ANNs are trained by using a small sampling of the data generated by Monte Carlo method, the transmission spectrums predicted by the ANNs are quite approximate to the simulated results. The physical mechanisms behind the phenomena are discussed theoretically, and the uncertain parameters in the theoretical models are fitted by utilizing the trained ANNs. More importantly, our results demonstrate that this model-driven method not only realizes the inverse design of the PWCCS with high precision but also optimizes some critical performance metrics for transmission spectrum. Compared with previous works, we construct a novel model-driven analysis method for the PWCCS which are expected to have significant applications in the device design, performance optimization, variability analysis, defect detection, theoretical modeling, optical interconnects and so on.
description: 10pages, 6 figures
Additional file 2: of Association mapping by aerial drone reveals 213 genetic associations for Sorghum bicolor biomass traits under drought
Creators: name: Spindel, Jennifer
name: Dahlberg, Jeffery
name: Colgan, Matthew
name: Hollingsworth, Joy
name: Sievert, Julie
name: Staggenborg, Scott
name: Hutmacher, Robert
name: Jansson, Christer
name: Vogel, John
Publisher: name: figshare
Year: 2018
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology

description: This file contains Figures S1-S10. (PDF 8610 kb)
Stability of spherical stellar systems I : Analytical results
Creators: name: Perez, J.
name: Aly, J-J
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The so-called ``symplectic method'' is used for studying the linear stability of a self-gravitating collisionless stellar system, in which the particles are also submitted to an external potential. The system is steady and spherically symmetric, and its distribution function $f_0$ thus depends only on the energy $E$ and the squarred angular momentum $L^2$ of a particle. Assuming that $\partial f_0 / \partial E < 0$, it is first shown that stability holds with respect to all the spherical perturbations -- a statement which turns out to be also valid for a rotating spherical system. Thus it is proven that the energy of an arbitrary aspherical perturbation associated to a ``preserving generator" $δg_1$ [i.e., one satisfying $\partial f_0 / \partial L^2 \{ δg_1, L^2 \} = 0$] is always positive if $\partial f_0 / \partial L^2 \leq 0$ and the external mass density is a decreasing function of the distance $r$ to the center. This implies in particular (under the latter condition) the stability of an isotropic system with respect to all the perturbations. Some new remarks on the relation between the symmetry of the system and the form of $f_0$ are also reported. It is argued in particular that a system with a distribution function of the form $f_0 = f_0 (E,L^2)$ is necessarily spherically symmetric.
description: uuencoded compressed postscript file containing 13 pages, accepted for publication in MNRAS
Two-dimensional composite solitons in Bose-Einstein condensates with spatially confined spin-orbit coupling
Creators: name: Li, Yongyao
name: Zhang, Xiliang
name: Zhong, Rongxuan
name: Luo, Zhihuan
name: Liu, Bin
name: Huang, Chunqing
name: Pang, Wei
name: Malomed, Boris A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: It was recently found that the spin-orbit (SO) coupling can help to create stable matter-wave solitons in spinor Bose-Einstein condensates in the two-dimensional (2D) free space. Being induced by external laser illumination, the effective SO coupling can be applied too in a spatially confined area. Using numerical methods and the variational approximation (VA), we build families of 2D solitons of the semi-vortex (SV) and mixed-mode (MM) types, and explore their stability, assuming that the SO-coupling strength is confined in the radial direction as a Gaussian. The most essential result is identification, by means of the VA and numerical methods, of the minimum size of the spatial confinement for which the 2D system maintains stable solitons of the SV and MM types.
description: 9 pages, 6 figures, and 61 references, Commun Nonlinear Sci Numer Simulat 73 481 (2019)
title: ADCO, Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Cart. 32 (G 136), 745 folios, f. 0068
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
name: Petot, Frédéric
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: Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Archives départementales de la Côte-d'Or, Cart. 32 (G 136), 745 folios, f. 0068, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Archives départementales de la Côte-d'Or, Cart. 32 (G 136), 745 folios, f. 0068, 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
Additional file 1 of A cross sectional study to compare cardiac structure and diastolic function in adolescents and young adults with youth-onset type 1 and type 2 diabetes: The SEARCH for Diabetes in Youth Study
Creators: name: Shah, Amy S.
name: Isom, Scott
name: Dabelea, Dana
name: D’Agostino, Ralph
name: Dolan, Lawrence M.
name: Wagenknecht, Lynne
name: Imperatore, Giuseppina
name: Saydah, Sharon
name: Liese, Angela D.
name: Lawrence, Jean M.
name: Pihoker, Cate
name: Urbina, Elaine M.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Biotechnology
subject: Developmental Biology

description: Additional file 1: Table S1. Participant characteristics by clustering analysis.
D3.1 Blockchain & DLT standardisation landscape report
Creators: name: Delaney, Fiona
Publisher: name: Zenodo
Year: 2023

description: SEEBLOCKS.eu supports EU strategic autonomy with standardisation. This document, the first in a series of Landscape Reports to be released throughout the term of the project, provides an overview of the current status of blockchain and DLT technology in Europe and globally, and details efforts supporting digital innovation and EU autonomy through a standardisation lens. It also outlines the process of creating open standards for blockchain and distributed ledger technology (DLT), and provides a selection of important published standards from international bodies.
Additional file 1: of Measuring synergy within a Triple Helix innovation system using game theory: cases of some developed and emerging countries
Creators: name: Mêgnigbêto, Eustache
Publisher: name: figshare
Year: 2018
Subjects: subject: Space Science
subject: Medicine
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: Cancer

description: Translation of the abstract into Arabic. (PDF 53 kb)
Galaxies with the DENIS 2 Micron Survey: A Preliminary Report
Creators: name: Mamon, Gary A.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The DENIS $IJK$ survey of the entire southern sky is beginning observations this year. It will return one million images, representing 4 Terabytes, among which nearly $10^8$ stars and up to one million galaxies. The main extragalactic applications of such a multi-band, digital, near-IR 2D survey are listed, and the importance and feasibility of a spectroscopic followup are discussed. First estimates of the capabilities for galaxy extraction are given, and illustrated with preliminary images of three very bright galaxies.
description: Contributed talk at ESO/MPA workshop (June 95) on "Spiral Galaxies in the Near-IR", ed. D. Minniti (Berlin: Springer Verlag) self-unpacking (uuencoded gzipped PostScript)
Existence of a Non-Zero $(0,1)$-Vector in the Row Space of Adjacency Matrices of Simple Graphs
Creators: name: Bera, Sudip
Publisher: name: arXiv
Year: 2022
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 15A03, 05C50

description: We look for a non-zero $(0, 1)$-vector in the row space of the adjacency matrix $A(Γ)$ of a graph $Γ,$ provided $Γ$ has at least one edge. Akbari, Cameron, and Khosrovshahi conjectured that there exists a non-zero $(0,1)$-vector in the row space of $A(Γ)$ (over the real numbers) which does not occur as a row of $A(Γ).$ This conjecture can be easily verified for graphs having diameter is equal to $1$ (complete graphs). In this article, we affirmatively prove this conjecture for any graph whose diameter is $\geq 4.$ Furthermore, in the remaining two cases that is, for graphs with diameter is equal to $2$ or $3,$ we report some progress in support of the conjecture.
description: 15 pages, 7figures
Upupa pyrrhocorax Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Upupiformes
Upupidae
Upupa
Upupa pyrrhocorax

description: Upupa pyrrhocorax [spec. nov.]
U. atra, rostro pedibusque rubris.
Monedula Pyrrhocorax. Hasselq. iter. 238.
Coracias s. Pyrrhocorax. Aldr. orn. l. 12. c. 8. Will. orn. 86. l. 19. Raj. av. 40. n. 6. Alb. av. 2. p. 23. t. 24.
Habitat in Angliae, Aegypti maritimis.
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 118, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
The Balbus-Hawley instability in weakly ionised discs
Creators: name: Wardle, Mark
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: MHD in protostellar discs is modified by the Hall current when the ambipolar diffusion approximation breaks down. Here I examine the Balbus-Hawley (magnetorotational) instability of a weak, vertical magnetic field within a weakly-ionized disc. Vertical stratification is neglected, and a linear analysis is undertaken for the case that the wave vector of the perturbation is parallel to the magnetic field. The growth rate depends on whether the initial magnetic field is parallel or antiparallel to the angular momentum of the disc. The parallel case is less (more) unstable than the antiparallel case if the Hall current is dominated by negative (positive) species. The less-unstable orientation is stable for chi less than about 0.5, where chi is the ratio of a generalised neutral-ion collision frequency to the Keplerian frequency. The other orientation has a formal growth rate of order the Keplerian angular frequency even in the limit that chi tends to zero! In this limit the wavelength of the fastest growing mode tends to infinity, so the minimum level of ionization for instability is determined by the requirement that a wavelength fit within a disc scale height. In the ambipolar diffusion case, this requires chi > v_A/c_s; in the Hall case this imposes a potentially much weaker limit, chi > v_A^2 / c_s^2.
description: 8 pp incl 4 figs, LaTeX, uses mn.sty; MNRAS in press. Accepted version: minor changes; results and conclusions unchanged
Morphology of AGN Emission Line Regions in SDSS-IV MaNGA Survey
Creators: name: He, Zhicheng
name: Sun, Ai-Lei
name: Zakamska, Nadia L.
name: Wylezalek, Dominika
name: Kelly, Michael
name: Greene, Jenny E.
name: Rembold, Sandro B.
name: Riffel, Rogério
name: Riffel, Rogemar A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Extended narrow-line regions (NLRs) around active galactic nuclei (AGN) are shaped by the distribution of gas in the host galaxy and by the geometry of the circumnuclear obscuration, and thus they can be used to test the AGN unification model. In this work, we quantify the morphologies of the narrow-line regions in 308 nearby AGNs ($z=0-0.14$, \lbol $\sim 10^{42.4-44.1}$ \erg{}) from the MaNGA survey. Based on the narrow-line region maps, we find that a large fraction (81\%) of these AGN have bi-conical NLR morphology. The distribution of their measured opening angles suggests that the intrinsic opening angles of the ionization cones has a mean value of 85--98$^\circ$ with a finite spread of 39-44$^\circ$ (1-$σ$). Our inferred opening angle distribution implies a number ratio of type I to type II AGN of 1:1.6--2.3, consistent with other measurements of the type I / type II ratio at low AGN luminosities. Combining these measurements with the WISE photometry data, we find that redder mid-IR color (lower effective temperature of dust) corresponds to stronger and narrower photo-ionized bicones. This relation is in agreement with the unification model that suggests that the bi-conical narrow-line regions are shaped by a toroidal dusty structure within a few pc from the AGN. Furthermore, we find a significant alignment between the minor axis of host galaxy disks and AGN ionization cones. Together, these findings suggest that obscuration on both circumnuclear ($\sim $pc) and galactic ($\sim$ kpc) scales are important in shaping and orienting the AGN narrow-line regions.
description: 14 pages, 7 figures, and 1 table, accepted for publication in MNRAS
Pulsar Recoil and Gravitational Radiation due to Asymmetrical Stellar Collapse and Explosion
Creators: name: Burrows, Adam
name: Hayes, John
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: New data imply that the average velocity of radio pulsars is large \cite{hla93}. Under the assumption that these data imply that a pulsar is born with an ``intrinsic'' kick, we investigate whether such kicks can be a consequence of asymmetrical stellar collapse and explosion. We calculate the gravitational wave (GW) signature of such asymmetries due to anisotropic neutrino radiation and mass motions. We predict that any recoils imparted to the neutron star at birth will result in a gravitational wave strain, h$^{TT}_{zz}$, that does not go to zero with time. Hence, there may be ``memory'' \cite{bt87} in the gravitational waveform from a protoneutron star that is correlated with its recoil and neutrino emissions.
description: 13 Pages, APS REVTeX format, encapsulated postscript figures, uuencoded and compressed. Accepted for publication in Phys. Rev. Letters
Additional file 1 of Movement syndromes of a Neotropical frugivorous bat inhabiting heterogeneous landscapes in Brazil
Creators: name: Kerches-Rogeri, Patricia
name: Ramos, Danielle Leal
name: Siren, Jukka
name: de Oliveira Teles, Beatriz
name: Alves, Rafael Souza Cruz
name: Priante, Camila Fátima
name: Ribeiro, Milton Cezar
name: Araújo, Márcio Silva
name: Ovaskainen, Otso
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases
subject: Plant Biology
subject: 60506 Virology

description: S1. The rationale behind the interpretation of the syndromes.
The Universality of the Fundamental Plane of E and S0 Galaxies. Sample Definition and I Band Photometric Data
Creators: name: Scodeggio, M.
name: Giovanelli, R.
name: Haynes, M. P.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: As part of a project to compare the Fundamental Plane and Tully-Fisher distance-scales, we present here I band CCD photometry for 636 early-type galaxies in 8 clusters and groups of galaxies. These are the A262, A1367, Coma (A1656), A2634, Cancer and Pegasus clusters, and the NGC 383 and NGC 507 groups. Sample selection, cluster properties, and cluster membership assignment criteria are discussed. We present photometric parameters that are used in the Fundamental Plane relation, the effective radius r_e and the effective surface brightness mu_e, as derived from a r^{1/4} fit to the observed radial photometric profile of each galaxy. A comparison with similar data found in the literature for the Coma cluster shows that large systematic uncertainties can be introduced in the measurement of r_e and mu_e by the particular method used to derive those parameters. However the particular combination of these two parameters that enters in the Fundamental Plane relation is a quantity that can be measured with high accuracy.
description: 14 pages, 5 tables, 6 figures, to appear in AJ. Note that tables 1 and 3 are in separate files, as they should be printed in landscape format. Also note that Table 3 is 20 pages long
Additional file 2 of Movement syndromes of a Neotropical frugivorous bat inhabiting heterogeneous landscapes in Brazil
Creators: name: Kerches-Rogeri, Patricia
name: Ramos, Danielle Leal
name: Siren, Jukka
name: de Oliveira Teles, Beatriz
name: Alves, Rafael Souza Cruz
name: Priante, Camila Fátima
name: Ribeiro, Milton Cezar
name: Araújo, Márcio Silva
name: Ovaskainen, Otso
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases
subject: Plant Biology
subject: 60506 Virology

description: S2. Individuals-movement.
Giant Planets at Small Orbital Distances
Creators: name: Guillot, T.
name: Burrows, A.
name: Hubbard, W. B.
name: Lunine, J. I.
name: Saumon, D.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using Doppler spectroscopy to detect the reflex motion of the nearby star, 51 Pegasi, Mayor \& Queloz (1995) claim to have discovered a giant planet in a 0.05-A.U., 4.23-day orbit. They estimate its mass to be in the range 0.5 \mj to 2 \mj, but are not able to determine its nature or origin. Including the effects of the severe stellar insolation implied, we extend the theory of giant planets we have recently developed to encompass those at very small orbital distances. Our calculations can be used to help formulate search strategies for luminous planets in tight orbits around other nearby stars. We calculate the radii and luminosities of such giants for a variety of compositions (H/He, He, H$_2$O, and olivine), evolutionary tracks for solar- composition gas giants, and the geometry of the Hayashi forbidden zone in the gas-giant mass regime. We show that such planets are stable and estimate the magnitude of classical Jeans evaporation and of photodissociation and loss due to EUV radiation. Even over the lifetime of the primary, the present companion would not have lost a large fraction of its mass. In addition, we demonstrate that for the mass range quoted, such planets are well within their Roche lobes. We show that the strong composition-dependence of the model radii and distinctive spectral signatures provide clear diagnostics that might reveal 51 Peg B's nature, should interferometric or adaptive-optics techniques ever succeed in photometrically separating planet from star.
description: 19 pages, uuencoded, compressed PostScript, 2 encapsulated PostScript figures, submitted to Ap. J. (Letters)
Rigidity results on Liouville equation
Creators: name: Eremenko, Alexandre
name: Gui, Changfeng
name: Li, Qinfeng
name: Xu, Lu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35G20, 35B07

description: We give a complete classification of solutions bounded from above of the Liouville equation $$-Δu=e^{2u}\quad\mbox{in}\quad {\mathbf{R}}^2.$$ More generally, solutions in the class $$N:=\{ u:\limsup_{z\to\infty} u(z)/\log|z|:=k(u)<\infty\}$$ are described. As a consequence, we obtain five rigidity results. First, $k(u)$ can take only a discrete set of values: either $k=-2$, or $2k$ is a non-negative integer. Second, $u\to-\infty$ as $z\to\infty$, if and only if $u$ is radial about some point. Third, if $u$ is symmetric with respect to $x$ and $y$ axes and $u_x<0,\; u_y<0$ in the first quadrant then $u$ is radially symmetric. Fourth, if $u$ is concave and bounded from above, then $u$ is one-dimensional. Fifth, if $u$ is bounded from above, and the diameter of ${\mathbf{R}}^2$ with the metric $e^{2u}δ$ is $π$, where $δ$ is the Euclidean metric, then $u$ is either radial about a point or one-dimensional.
 In addition, we extend the concavity rigidity result on Liouville equation in higher dimensions.
description: 14 pages
Evidence of the true Higgs boson $H_T$ at the LHC Run 2
Creators: name: Cea, Paolo
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The aim of the present note is to compare the recent LHC data at $\sqrt{s} =13 \,TeV$ with our previous theoretical proposal that the true Higgs boson $H_T$ should be a broad heavy resonance with mass around $750 \, GeV$. We focus on the so-called golden channel $H_T \rightarrow ZZ$ where the pair of Z bosons decay leptonically to $\ell^+ \ell^- \ell^+ \ell^-$, $\ell$ being either an electron or a muon. We use the data collected by the ATLAS and CMS Collaborations at $\sqrt{s} =13 \,TeV$ with an integrated luminosity of $36.1 \, fb^{-1}$ and $77.4 \, fb^{-1}$ respectively. We find that the experimental data from both the LHC Collaborations do display in the golden channel a rather broad resonance structure around $700 \, GeV$ with a sizeable statistical significance. Our theoretical expectations seem to be in fair good agreement with the experimental observations. Combining the data from both the ATLAS and CMS Collaborations we obtain an evidence of the heavy Higgs boson in this channel with an estimated statistical significance of more than five standard deviations.
description: Modern Physics Letters A Vol. 33, No. 1 (2019) 1950137 (9 pages) DOI: 10.1142/S0217732319501372. arXiv admin note: substantial text overlap with arXiv:1707.05605, arXiv:1609.09612
Regularity results for classes of Hilbert C*-modules with respect to special bounded modular functionals
Creators: name: Frank, Michael
Publisher: name: arXiv
Year: 2022
Subjects: subject: Operator Algebras (math.OA)
subject: Mathematical Physics (math-ph)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: Primary 46L08, Secondary 46L05, 46H10, 47B48

description: Considering the deeper reasons of the appearance of a remarkable counterexample by J.~Kaad and M.~Skeide [17] we consider situations in which two Hilbert C*-modules $M \subset N$ with $M^\bot = \{ 0 \}$ over a fixed C*-algebra $A$ of coefficients cannot be separated by a non-trivial bounded $A$-linear functional $r_0: N \to A$ vanishing on $M$. In other words, the uniqueness of extensions of the zero functional from $M$ to $N$ is focussed. We show this uniqueness of extension for any such pairs of Hilbert C*-modules over W*-algebras, over monotone complete C*-algebras and over compact C*-algebras. Moreover, uniqueness of extension takes place also for any one-sided maximal modular ideal of any C*-algebra. Such a non-zero separating bounded $A$-linear functional $r_0$ exist for a given pair of full Hilbert C*-modules $M \subseteq N$ over a given C*-algebra $A$ iff there exists a bounded $A$-linear non-adjointable operator $T_0: N \to N$ such that the kernel of $T_0$ is not biorthogonally closed w.r.t. $N$ and contains $M$. This is a new perspective on properties of bounded modular operators that might appear in Hilbert C*-module theory. By the way, we find a correct proof of [13, Lemma 2.4] in the case of monotone complete and compact C*-algebras, but not in the general C*-case.
description: 18 pages, minor corrections and text improvements, updates of the literature list. Submitted to Annals of Functional Analysis
Invariance pressure of control sets
Creators: name: Colonius, Fritz
name: Cossich, João A. N.
name: Santana, Alexandre J.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 93B52, 93C41, 37A35, 94A17

description: The invariance pressure of continuous-time control systems with initial states in a set K which are to be kept in a set Q is introduced and a number of results are derived, mainly for the case where Q is a control set.
description: 22 pages, 1 figure. To appear in SIAM Journal on Control and Optimization
Additional file 2: of Constructions of alcohol consumption by non-problematised middle-aged drinkers: a qualitative systematic review
Creators: name: Muhlack, Emma
name: Carter, Drew
name: Braunack-Mayer, Annette
name: Morfidis, Nicholas
name: Jaklin Eliott
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology

description: Evaluation & extraction tool. (DOCX 15 kb)