cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Aerial aquatic locomotion with miniature robots
Creators: name: Siddall, Robert James Douglas
Publisher: name: Imperial College London
Year: 2017

description: A robot capable of locomotion in both air and water would enable novel missions in complex environments, such as water sampling after floods or underwater structural inspections. The design of such a vehicle is challenging, implying significant propulsive and structural trade-offs for operation in both fluids. This thesis examines the aerial-aquatic locomotion problem applied to miniature robots, beginning by exploring the ways in which this type of locomotion is achieved in nature, to abstract design principles for synthetic systems. After examining the problem, several subsystems enabling aerial-aquatic locomotion are presented. This includes multiple devices for escape from water using a pressurised jet, with each device taking a different approach to overcoming the power density limitations of miniature actuators, including the use of compressed gas, combustion, and elastic energy storage. Each system is able to rapidly release stored energy as thrust, allowing a robot to transition to flight from water. Using the highest performing system, the aquatic escape process is examined, by tracking launches out of water in a laboratory. From this data a model is developed and the robustness of launch in an outdoor environment is quantified. For sustained locomotion, a means of optimising propeller performance in two different media simultaneously is examined, and a bimodal transmission which allows efficient operation both air and water is produced. The tested subsystems are integrated into an Aquatic Micro Air Vehicle (AquaMAV) capable of sustained flight in air and dives into water. This robot uses a reconfigurable wing to dive into the water from flight, inspired by the plunge dive of Sulid birds. The vehicle’s performance is investigated in wind and water tunnels, and its behaviour is analysed using a trajectory model. The performance of the AquaMAV and its subsystems are then assessed, and the impact of the multimodal capabilities on performance is examined.
Probing the Structure of Accreting Compact Sources Through X-Ray Time Lags and Spectra
Creators: name: Hua, Xin-Min
name: Kazanas, Demosthenes
name: Cui, Wei
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We exhibit, by compiling all data sets we can acquire, that the Fourier frequency dependent hard X-ray lags, first observed in the analysis of aperiodic variability of the light curves of the black hole candidate Cygnus X-1, appear to be a property shared by several other accreting black hole candidate sources and also by the different spectral states of this source. We then present both analytic and numerical models of these time lags resulting by the process of Comptonization in a variety of hot electron configurations. We argue that under the assumption that the observed spectra are due to Comptonization, the dependence of the lags on the Fourier period provides a means for mapping the spatial density profile of the hot electron plasma, while the period at which the lags eventually level--off provides an estimate of the size of the scattering cloud. We further examine the influence of the location and spatial extent of the soft photon source on the form of the resulting lags for a variety of configurations; we conclude that the study of the X-ray hard lags can provide clues about these parameters of the Comptonization process too. Fits of the existing data with our models indicate that the size of the Comptonizing clouds are quite large in extent ($\sim$ 1 light second) with inferred radial density profiles which are in many instances inconsistent with those of the standard dynamical models, while the extent of the source of soft photons appears to be much smaller than those of the hot electrons by roughly two orders of magnitude and its location consistent with the center of the hot electron corona.
description: 20 pages Latex, 11 postscript figures, to appear in the Astrophysical Journal, Vol 512, Feb 20 issue
Additional file 2: of Sustaining knowledge translation interventions for chronic disease management in older adults: protocol for a systematic review and network meta-analysis
Creators: name: Tricco, Andrea
name: Moore, Julia
name: Beben, Nicole
name: Brownson, Ross
name: Chambers, David
name: Dolovich, Lisa
name: Edwards, Annemarie
name: Fairclough, Lee
name: Glasziou, Paul
name: Graham, Ian
name: Hemmelgarn, Brenda
name: Holmes, Bev
name: Wanrudee Isaranuwatchai
name: Lachance, Chantelle
name: Legare, France
name: McGowan, Jessie
name: Majumdar, Sumit
name: Presseau, Justin
name: Squires, Janet
name: Stelfox, Henry
name: Strifler, Lisa
name: Thompson, Kristine
name: Weijden, Trudy Van Der
name: Veroniki, Areti
name: Straus, Sharon
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: MEDLINE Search Strategy. MEDLINE search strategy. (DOCX 23 kb)
title: ADCO, Grènetier de Cîteaux : comptes (1497-1504) (11 H 1172), f. 00577
Creators: name: de la Côte-d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CBMA/CG21/F.PETOT/2019
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: comptes
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Grènetier de Cîteaux : comptes (1497-1504), Archives départementales de la Côte-d'Or, (11 H 1172). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Grènetier de Cîteaux : comptes (1497-1504), Archives départementales de la Côte-d'Or, (11 H 1172), f. 00577, 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
A New Channel for the Detection of Planetary Systems Through Microlensing: II. Repeating Events
Creators: name: Di Stefano, Rosanne
name: Scalzo, Richard A.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In the companion paper we began the task of systematically studying the detection of planets in wide orbits ($a > 1.5 R_E$) via microlensing surveys. In this paper we continue, focusing on repeating events. We find that, if all planetary systems are similar to our own Solar System, reasonable extensions of the present observing strategies would allow us to detect 3-6 repeating events per year along the direction to the Bulge. Indeed, if planetary systems with multiple planets are common, then future monitoring programs which lead to the discovery of thousands of stellar-lens events will likely discover events in which several different planets within a single system serve as lenses, with light curves exhibiting multiple repetitions. In this paper we discuss observing strategies to maximize the discovery of all wide-orbit planet-lens events. We also compare the likely detection rates of planets in wide orbits to those of planets located in the zone for resonant lensing. We find that, depending on the values of the planet masses and stellar radii of the lensed sources (which determine whether or not finite source size is important), and also on the sensitivity of the photometry used by observers, the detection of planets in wide orbits may be the primary route to the discovery of planets via microlensing. We also discuss how the combination of resonant and wide-orbit events can help us to learn about the distribution of planetary system properties (S 6.1). In addition, by determining the fraction of short-duration events due to planets, we indirectly derive information about the fraction of all short-duration events that may be due to low-mass MACHOs (S 6.2).
description: 51 pages, 7 figures. To be published in the Astrophysical Journal, 20 February 1999. This completes the introduction to the discovery of planets in wide orbits begun in astro-ph/9808075, also to appear in ApJ on 20 February 1999
Bias in the Cepheid PL relation
Creators: name: Lanoix, P.
name: Paturel, G.
name: Garnier, R.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We show that the Cepheid PL relation is affected by a Malmquist type bias, the so-called population incompleteness bias. Its calculated slope appears shallower than the true one because of the cutoff in apparent magnitude resulting from the instrumental limiting magnitude. Furthermore, the use of the PL relation, even with the correct slope, leads to underestimation of distances which is not negligible. We confirm this finding by studying simulated PL relations, and we show that this bias may be as large as 0.2 or 0.3 magnitudes on distance modulus. We also test the efficiency of a cutoff in $\log P$ and show that it is a good way to minimize this bias. However, a correction of this is difficult as long as the completeness of the sample is not perfectly well established.
description: 17 pages (9 figures). Accepted for publication in Part 1 of the Astrophysical Journal
Anomalous thermal oxidation of gadolinium thin films deposited on silicon by high pressure sputtering
Creators: name: Pampillón, María Ángela
name: Feijoo, Pedro Carlos
name: Andrés, Enrique San
name: Lucía, María Luisa
name: Toledano-Luque, María
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Thin gadolinium metallic layers were deposited by high-pressure sputtering in pure Ar atmosphere. Subsequently, in situ thermal oxidation was performed at temperatures ranging from 150 to 750 $^\circ$C. At an oxidation temperature of 500 $^\circ$C the films show a transition from monoclinic structure to a mixture of monoclinic and cubic. Regrowth of interfacial SiO$_x$ is observed as temperature is increased, up to 1.6 nm for 750 $^\circ$C. This temperature yields the lowest interface trap density, 4e10 eV$^{-1}$ cm$^{-2}$, but the effective permittivity of the resulting dielectric is only 7.4. The reason of this low value is found on the oxidation mechanism, which yields a surface with located bumps. These bumps increase the average thickness, thus reducing the capacitance and therefore the calculated permittivity.
description: 22 pages, 7 figures, 1 table
3-D printed flexible hybrids for tissue regeneration
Creators: name: Tallia, Francesca
Publisher: name: Imperial College London
Year: 2016

description: Tissue regeneration is a key function of the body, but often tissues are subject to damage that they are unable to self-heal. The repair can be supported by a scaffold, which is commonly a 3D porous temporary template that substitutes the damaged tissue and guides the growth of healthy tissue while bioresorbing. Successful scaffolds should satisfy several requirements, including interconnected porosity, sufficient mechanical properties, and biodegradability at a rate matching tissue regrowth. Covalently-bonded sol-gel inorganic/organic hybrids are interpenetrating co-networks of bioactive glass and polymers intimately linked at the molecular level, designed to provide tailored mechanical properties and congruent degradation. This project aimed to develop new silica/polycaprolactone (SiO2/PCL) hybrid scaffolds for bone or cartilage regeneration. The covalent bond between PCL and silica was successfully achieved using (3-glycidoxypropyl)trimethoxysilane (GPTMS) as a coupling agent. This led to a novel synthesis that combined the sol-gel process with in situ ring-opening polymerisation of the solvent (tetrahydrofuran), resulting in innovative silica/polytetrahydrofuran/PCL (SiO2/PTHF/PCL) hybrids with unprecedented features. They showed tailorable mechanical properties in a broad range of compositions (2.5-63.4 wt.% inorganic), from polymer-like to glass-like behaviour with excellent flexibility and ability to recover the deformation. Hybrids with SiO2 <40 wt.% maintained their mechanical properties in wet environments; they also unexpectedly showed the intrinsic potential to autonomously self-heal when damaged in dry conditions. 3D grid-like hybrid scaffolds containing ~24 wt.% inorganic were successfully fabricated through 3D extrusion printing from sol-gel process. This technique relies on the gradual increase of viscosity occurring during gelation, which makes the viscous sol a suitable ink for direct extrusion within a limited time window. The obtained scaffolds showed mechanical properties similar to native cartilage and were proven to stimulate the production of collagen Type II, typical of hyaline cartilage, during chondrocyte culture. Therefore, SiO2/PTHF/PCL hybrid scaffolds have great potential for articular cartilage regeneration.
Untangling the web of life: reconstructing spatial patterns in the palaeoenvironment, palaeoecology and taphonomy of the Western Interior Seaway
Creators: name: Dean, Christopher David
Publisher: name: Imperial College London
Year: 2018

description: A central goal of palaeontology is determining trends in diversity through deep time, but our un- derstanding of these patterns is hampered by bias in the fossil record, arising from taphonomic, geological and anthropogenic causes. These factors can be further exacerbated by environments which are unqiue to the past. Epicontinental seas - shallow, continent covering oceans - were common throughout the Phanerozoic and contain the majority of our available fossil record. Their unique environmental conditions have led to the suggestion that their depositional pro- cesses, palaeo-community structure and taphonomic biases could be driven by different variables than those of otherwise time-equivalent shelf margin settings. Understanding this variation in both time and space is essential for bridging the gap in understanding between these environ- ments and the modern. In this thesis, a series of case studies attempt to understand the spatial patterns in palaeoenvironment, palaeoecology and taphonomy of the Western Interior Seaway, an epicontinental sea from the late Cretaceous of North America. A new method of estimat- ing palaeobathymetry using numerical tidal modelling reports that the seaway was deeper than previously suggested in the mid-Campanian, with tides within the ’Utah Bight’ amplified by resonance effects. Analysis of palaeocommunity structure reveals that palaeobiogeography of molluscan fauna varies between the Cenomanian-Turonian and the lower Campanian; the for- mer exhibits a latitudinal gradient whilst the latter shows a homogeneous central seaway. As such, previous suggestions of distinct sub-provinces of fauna can be better explained by other palaeobiogeographic patterns. Differences in sampling probability between calcitic and aragonitic molluscs at varying depths suggest that preferential aragonite bias can be expressed spatially, potentially influencing the perceived range size of aragonitic organisms due to differences in between-site preservation. These studies show that it is important to understand the inherent spatial heterogeneity of the geological record to adequately analyse diversity patterns through time.
Microwave background anisotropies and non-linear structures II. Numerical computations
Creators: name: Dabrowski, Y.
name: Hobson, M. P.
name: Lasenby, A. N.
name: Doran, C. J. L.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A new method for modelling spherically symmetric inhomogeneities is applied to the formation of clusters in an expanding Universe. We impose simple initial velocity and density perturbations of finite extent and we investigate the subsequent evolution of the density field. Photon paths are also calculated, allowing a detailed consideration of gravitational lensing effects and microwave background anisotropies induced by the cluster. We apply the method to modelling high-redshift clusters and, in particular, we consider the reported microwave decrement observed towards the quasar pair PC1643+4631 A&B. We also consider the effect on the primordial microwave background power spectrum due to gravitational lensing by a population of massive high-redshift clusters.
description: 15 pages, 23 figures; Monthly Notices of the Royal Astronomical Society (MNRAS), in press
Formation of Spiral-Coils among Self-Propelled Chains
Creators: name: Wang, Yao-Kuan
name: Lo, Chien-Jung
name: Lo, Wei-Chang
Publisher: name: arXiv
Year: 2018
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: We study the dynamics of self-propelled chains with the excluded volume interaction via the Brownian dynamics simulation, in which the bending elasticity of chains is varied. The changes of the bending elasticity lead to various characteristics of the clustering behavior in the short-chain-only system. When a long self-propelled chain is mixed with these short chains, it can fold into the spiral-coil, a steadily rotating spiral conformation, either at a high density of short chains or at a low density if the long chain itself is sufficiently flexible. Our results qualitatively support the speculation on that the formation of the spiral-coil in the swarm of Vibrio alginolyticus is triggered by collisions from the clusters of the shorter bacteria.
description: 11 pages, 7 figures, comments are welcome. Accepted for Physical Review E
A Variational Characterisation of the Second Eigenvalue of the p-Laplacian on Quasi Open Sets
Creators: name: Fusco, Nicola
name: Mukherjee, Shirsho
name: Zhang, Yi Ru-Ya
Publisher: name: arXiv
Year: 2018
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35P30 (primary), 35J20, 58E30, 49Q10 (secondary)

description: In this article, we prove a minimax characterization of the second eigenvalue of the p-Laplacian operator on p-quasi-open sets, using a construction based on minimizing movements. This leads also to an existence theorem for spectral functionals depending on the first two eigenvalues of the p-Laplacian.
description: 34 pages
Combined matrices of almost strictly sign regular matrices
Creators: name: Alonso, Pedro
name: Peña, Juan Manuel
name: Serrano, María Luisa
Publisher: name: arXiv
Year: 2024
Subjects: subject: Combinatorics (math.CO)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 65F05, 65F15, 65F35

description: The combined matrix is a very useful concept for many applications. Almost strictly sign regular (ASSR) matrices form an important structured class of matrices with two possible zero patterns, which are either type-I staircase or type-II staircase. We prove that, under an irreducibility condition, the pattern of zero and nonzero entries of an ASSR matrix is preserved by the corresponding combined matrix. Without the irreducibility condition, it is proved that type-I and type-II staircases are still preserved. Illustrative numerical examples are included.
description: 8 pages
Lettre de Abraham Joseph Michelet d' Ennery à Jean-François Séguier, 1767-09-27
Creators: name: Ennery, Abraham Joseph Michelet d'
name: Ennery, Abraham Joseph Michelet D'
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2021
Subjects: Collections

description: [transcription] Je suis extrêmement surpris, Monsieur, par votre lettre du 14 que le catalogue de Monsieur Davila ne vous est pas encore parvenu. Il a été remis à Monsieur Bazin de Lambert par Monsieur Chaillan [Cheylan] négociant d'Aix auquel vous pouvez vous adresser de ma part pour apprendre la route que ce Monsieur Bazin a tenue ; c'est ainsi qu'en voulant mieux faire souvent on fait pis car en saisissant cete occasion pour accélerer j'ai privé Monsieur l'abbé Bertrand de Toulouse du plaisir de vous remettre lui-même ce catalogue. Ce confrère aimable quitte la grande ville après un séjour d'une année qu'il a bien employé vis-à-vis de tous les amateurs. Il se propose de regagner ses pénates en remontant jusqu'en Provence pour satisfaire sa curiosité. Vous entrez pour beaucoup dans cette direction et je voudrais pour quelque chose me trouver entre vous deux, je ne perdrais rien.

Recevez mon compliment sur l'accroissement de votre cabinet dans toutes ses parties. Je connais vos lumières et la délicatesse de votre goût ainsi je juge comme je le dois du mérite que cette augmentation peut y donner

La santé de MonsieurDavila est toujours délabrée. Bien des curieux ambitionnent la possession de son trésor si la conséquence de l'objet ne les empêchait d'y penser, et je crains fort qu'il ne soit obligé d'en souffrir le démembrement par une vente publique en détail. L'époque qu'il en a lui-même indiqué avance à grands pas et si cette vente a lieu, on verra dans la même année la dispersion de deux des plus grands cabinets de Paris, ceux de Davila et ceux de Julienne.

Des réparations forcées me mettent aujourd'hui dans le cas de faire divorce avec la curiosité et depuis mon retour en cette ville, je n'ai acquis qu'un Vespasien d'or restitué avec quelques broutilles [fol. 151 v] de peu de conséquence. Les occasions deviennent aussi rares ici que partout ailleurs, au surplus je suis bien de votre avis sur l'avantage des acquisitions en gros, on y gagne toujours beaucoup.

Conservez-moi votre estime. J'espère vous en prier de vive vois l'année prochaine et vous assurer du retour exact avec lequel je serai toute la vie,

Monsieur,

Votre très humble et très obéissant serviteur

D'Ennery

Paris ce 27 septembre 1767.
description: [personnes citées] (Paris - Madrid) Cabinet Davila, (Paris) Cabinet de Julienne, Abbé Bertrand, Jean de Julienne, M. Bazin de Lambert, Pedro Franco Davila
description: [reférence bibliographique citée] Catalogue systématique et raisonné des curiosités de la natures et de l'art qui composent le cabinet de M. davila, avec figure en taille douce, de plusieurs morceaux qu
description: Source: [lieu de Conservation] Nîmes, Bibliothèque Carré d'Art [cote]ms. 141_21, fol. 151
description: Source: ark:/12148/btv1b100152064
Charadrius oedicnemus Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Charadriiformes
Charadriidae
Charadrius
Charadrius oedicnemus

description: Charadrius oedicnemus [spec. nov.]
C. griseus, remigibus primoribus duabus nigris medio albis, rostro acuto, pedibus cinereis.
Oedicnemus. Bell. av... Raj. av. 108. n. 4. Alb. av. 1. p. 66. t. 69.
Charadrius. Gesn. av. 256.
Charadrius Kervari. Hasselq. iter. 210. n. 32. an?
Habitat in Anglia.
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 151, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Sparse Polynomial Chaos Expansion for Universal Stochastic Kriging
Creators: name: García-Marino, José Calos
name: Calvo-Jurado, Carmen
name: García-Macías, Enrique
Publisher: name: arXiv
Year: 2024
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: Surrogate modelling techniques have opened up new possibilities to overcome the limitations of computationally intensive numerical models in various areas of engineering and science. However, while fundamental in many engineering applications and decision-making, the incorporation of uncertainty quantification into meta-models remains a challenging open area of research. To address this issue, this paper presents a novel stochastic simulation approach combining sparse polynomial chaos expansion (PCE) and Stochastic Kriging (SK). Specifically, the proposed approach adopts adaptive sparse PCE as the trend model in SK, achieving both global and local prediction capabilities and maximizing the role of the stochastic term to conduct uncertainty quantification. To maximize the generalization and computational efficiency of the meta-model, the Least Angle Regression (LAR) algorithm is adopted to automatically select the optimal polynomial basis in the PCE. The computational effectiveness and accuracy of the proposed approach are appraised through a comprehensive set of case studies and different quality metrics. The presented numerical results and discussion demonstrate the superior performance of the proposed approach compared to the classical ordinary SK model, offering high flexibility for the characterization of both extrinsic and intrinsic uncertainty for a wide variety of problems.
Additional file 1: of Questionnaire results on exposure characteristics of pregnant women participating in the Japan Environment and Children Study (JECS)
Creators: name: Iwai-Shimada, Miyuki
name: Nakayama, Shoji
name: Isobe, Tomohiko
name: Michikawa, Takehiro
name: Yamazaki, Shin
name: Nitta, Hiroshi
name: Takeuchi, Ayano
name: Kobayashi, Yayoi
name: Tamura, Kenji
name: Suda, Eiko
name: Masaji Ono
name: Junzo Yonemoto
name: Kawamoto, Toshihiro
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: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Supplementary information about questionnaire items for Tables 1 to 6. (PDF 126 kb)
Hard limits on the postselectability of optical graph states
Creators: name: Adcock, Jeremy C.
name: Morley-Short, Sam
name: Silverstone, Joshua W.
name: Thompson, Mark G.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Coherent control of large entangled graph states enables a wide variety of quantum information processing tasks, including error-corrected quantum computation. The linear optical approach offers excellent control and coherence, but today most photon sources and entangling gates---required for the construction of large graph states---are probabilistic and rely on postselection. In this work, we provide proofs and heuristics to aid experimental design using postselection. We derive a fundamental limitation on the generation of photonic qubit states using postselected entangling gates: experiments which contain a cycle of postselected gates cannot be postselected. Further, we analyse experiments that use photons from postselected photon pair sources, and lower bound the number of classes of graph state entanglement that are accessible in the non-degenerate case---graph state entanglement classes that contain a tree are are always accessible. Numerical investigation up to 9-qubits shows that the proportion of graph states that are accessible using postselection diminishes rapidly. We provide tables showing which classes are accessible for a variety of up to nine qubit resource states and sources. We also use our methods to evaluate near-term multi-photon experiments, and provide our algorithms for doing so.
description: Our manuscript comprises 4843 words, 6 figures, 1 table, 47 references, and a supplementary material of 1741 words, 2 figures, 1 table, and a Mathematica code listing
Quantifying Operations with an Application to Coherence
Creators: name: Theurer, Thomas
name: Egloff, Dario
name: Zhang, Lijian
name: Plenio, Martin B.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: To describe certain facets of non-classicality, it is necessary to quantify properties of operations instead of states. This is the case if one wants to quantify how well an operation detects non-classicality, which is a necessary prerequisite for its use in quantum technologies. To do so rigorously, we build resource theories on the level of operations, exploiting the concept of resource destroying maps. We discuss the two basic ingredients of these resource theories, the free operations and the free super-operations, which are sequential and parallel concatenations with free operations. This leads to defining properties of functionals that are well suited to quantify the resources of operations. We introduce these concepts at the example of coherence. In particular, we present two measures quantifying the ability of an operation to detect, i.e. to use, coherence, one of them with an operational interpretation, and provide methods to evaluate them.
description: 5+20 pages; matches version accepted for publication
Advances and Limitations in Open Source Arabic-Script OCR: A Case Study
Creators: name: Kiessling, Benjamin
name: Kurin, Gennady
name: Miller, Matthew Thomas
name: Smail, Kader
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computation and Language (cs.CL)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This work presents an accuracy study of the open source OCR engine, Kraken, on the leading Arabic scholarly journal, al-Abhath. In contrast with other commercially available OCR engines, Kraken is shown to be capable of producing highly accurate Arabic-script OCR. The study also assesses the relative accuracy of typeface-specific and generalized models on the al-Abhath data and provides a microanalysis of the ``error instances'' and the contextual features that may have contributed to OCR misrecognition. Building on this analysis, the paper argues that Arabic-script OCR can be significantly improved through (1) a more systematic approach to training data production, and (2) the development of key technological components, especially multi-language models and improved line segmentation and layout analysis.
 Cet article pr{é}sente une {é}tude d'exactitude du moteur ROC open source, Krakan, sur la revue acad{é}mique arabe de premier rang, al-Abhath. Contrairement {à} d'autres moteurs ROC disponibles sur le march{é}, Kraken se r{é}v{è}le {ê}tre capable de produire de la ROC extr{ê}mement exacte de l'{é}criture arabe. L'{é}tude {é}value aussi l'exactitude relative des mod{è}les sp{é}cifiquement configur{é}s {à} des polices et celle des mod{è}les g{é}n{é}ralis{é}s sur les donn{é}es d'al-Abhath et fournit une microanalyse des "occurrences d'erreurs", ainsi qu'une microanalyse des {é}l{é}ments contextuels qui pourraient avoir contribu{é} {à} la m{é}reconnaissance ROC. S'appuyant sur cette analyse, cet article fait valoir que la ROC de l'{é}criture arabe peut {ê}tre consid{é}rablement am{é}lior{é}e gr{â}ce {à} (1) une approche plus syst{é}matique d'entra{î}nement de la production de donn{é}es et (2) gr{â}ce au d{é}veloppement de composants technologiques fondamentaux, notammentl'am{é}lioration des mod{è}les multilingues, de la segmentation de ligne et de l'analyse de la mise en page.
How is Information Avoidance currently understood and researched?
Creators: name: Klaus, Jan Christopher
Publisher: name: Humboldt-Universität zu Berlin
Year: 2021
Subjects: subject: Information Avoidance
subject: Utility Theory
subject: Uncertainty Management Theory
subject: Selective Exposure
subject: Selective Avoidance
subject: Informationsvermeidung
subject: 020 Bibliotheks- und Informationswissenschaften

description: Information Avoidance (IA) is an important aspect of human Information Behaviour, which is far less often studied than its counterpoint Information Seeking. Despite this, multiple overviews exist (e.g. Sweeny et al. 2010; Manheim 2014 or Golman et al. 2017), though there is no current overview within Information Science. Thus this thesis combines research from communication, psychology, economics, health and information science, to create an overview of common theories, research-methods, reasons and appearances of IA behaviour. It closes with an overview of still open questions. This thesis found that the definition of IA varied widely between researchers, to the extend that a single definition would be impossible to create. However some trends could be identified: IA became more commonly assumed to be predicted by situations, instead of traits. More and more researchers began to understand it as neutral behaviour, instead of a solely negative one. Topics formerly belonging to other non-seeking-behaviour (e.g. Information Overload or Satisficing) were researched as aspects of IA. Finally while many research areas (e.g. psychology, communication) combined their knowledge, many more could benefit from doing so. There were also still mostly unexplored topics. These were positive IA, temporal IA, as well as IA Behaviour by groups or animals.
The mechanistic role of MicroRNAs in takotsubo syndrome
Creators: name: Couch, Liam
Publisher: name: Imperial College London
Year: 2018

description: Takotsubo syndrome (TTS) is a severe but reversible acute heart failure affecting predominantly post-menopausal women. Extreme adrenaline levels arising with stress cause ventricular apical akinesis with hypercontractility at the base. We have previously shown this is likely to occur due to β2AR-Gαi coupling, which is dysregulated in TTS. A microRNA (miR) profile, with increased miR-16 and miR-26a in TTS, has been identified that enables differentiation from both healthy control and ST-segment elevation myocardial infarction, which it closely resembles at patient presentation. We hypothesise that miR-16 and miR-26a functionally interact to predispose to or exacerbate the cardiodepression seen in TTS. miRs were modulated in vitro in adult rat cardiomyocytes using Lipofectamine 3000. Cardiomyocyte percentage shortening was measured using an Ionoptix system. TTS was induced in vivo by adrenaline bolus injection through the external jugular vein of an adult male Sprague-Dawley rat, and blood sampled at defined timepoints. miRs were modulated in vivo by AAV9 injection via tail vein (called AAV-control and AAV-miR) with subsequent TTS induction after 6 weeks. miR-16 and miR-26a specifically reduce baseline contractility of apical but not basal cardiomyocytes in vitro. This includes alterations in calcium handling, with reduced calcium transient amplitude and SR calcium content. Together, miR-16 and miR-26a reduce sensitivity to adrenaline in the apex, and amplify maximal response to adrenaline in the base, but do not change β2AR response. In vivo, in our established model of TTS, serum levels of miR-16 and miR-26a are not changed acutely by adrenaline. AAV-miR treatment produces greater hypokinesis in the apex and hypercontractility in the base. When investigating the mechanism of action, this includes altered G-protein signalling and calcium current activity. TTS-associated miRs represent novel molecules that clarify the pathogenesis of this curious condition. They predispose to TTS in vivo by promoting apical hypokinesia and basal hypercontractility. This occurs by reducing sensitivity to adrenaline in the apex and increasing maximal response to adrenaline in the base through alterations in G-protein signalling and calcium handling.
Additional fileÂ 2: of The knowledge and perceptions of the first year medical students of an International University on family planning and emergency contraception in Nicosia (TRNC)
Creators: name: Ozen Asut
name: Ovgu Ozenli
name: Gur, Gizem
name: Deliceo, Elif
name: Cagin, Buse
name: Korun, Okan
name: Ozgur Turk
name: Songul Vaizoglu
name: Cali, Sanda
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: Plant Biology

description: Turkish questionnaire. (DOCX 30 kb)
Charadrius himantopus Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Charadriiformes
Charadriidae
Charadrius
Charadrius himantopus

description: Charadrius himantopus [spec. nov.]
C. supra niger, subtus albus, rostro nigro capite longiore, pedibus rubris longissimis.
Charadrius autumnalis. Hasselq. iter. 253. n. 29.
Himantopus. Sibb. scot... t. 11. 13. Raj. av. 106. Aldr. orn. l. 20. c. 30. Gesn. av...
Habitat in Europa australiore.
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 151, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
title: ADCO, Huitième cartulaire de Saint-Étienne de Dijon (1661-1667), Cart. 31 (G 135), 549 folios, f. 0610
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Huitième cartulaire de Saint-Étienne de Dijon (1661-1667), Archives départementales de la Côte-d'Or, Cart. 31 (G 135), 549 folios, f. 0610, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Huitième cartulaire de Saint-Étienne de Dijon (1661-1667), Archives départementales de la Côte-d'Or, Cart. 31 (G 135), 549 folios, f. 0610, 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
Gamma-ray Production in the Extended Halo of the Galaxy and Possible Implications for the Origin of Galactic Cosmic Rays
Creators: name: Liu, Ruo-Yu
name: Yan, Huirong
name: Wang, Xiang-Yu
name: Shao, Shi
name: Li, Hui
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Various studies have implied the existence of a gaseous halo around the Galaxy extending out to 100 kpc. Galactic cosmic rays (CRs) that propagate to the halo, either by diffusion or by convection with the possibly existing large-scale Galactic wind, can interact with the gas therein and produce gamma-rays via proton-proton collision. We calculate the cosmic ray distribution in the halo and the gamma-ray flux, and explore the dependence of the result on model parameters such as diffusion coefficient, CR luminosity, CR spectral index. We find that the current measurement of isotropic gamma-ray background at $\lesssim$TeV with Fermi Large Area Telescope already approaches a level that can provide interesting constraints on the properties of Galactic cosmic ray (e.g., with CR luminosity $L_{CR}\leq 10^{41}$erg/s). We also discuss the possibilities of the Fermi bubble and IceCube neutrinos originating from the proton-proton collision between cosmic rays and gas in the halo, as well as the implication of our results for the baryon budget of the hot circumgalactic medium of our Galaxy. Given that the isotropic gamma-ray background is likely to be dominated by unresolved extragalactic sources, future telescopes may extract more individual sources from the IGRB, and hence put even more stringent restriction on the relevant quantities (such as Galactic cosmic ray luminosity and baryon budget in the halo) in the presence of a turbulent halo that we consider.
description: 11 pages, 8 figures, 1 table; additional discussion added; ApJ accepted
Retrieving Bulge and Disk Parameters and Asymptotic Magnitudes from the Growth Curves of Galaxies
Creators: name: Okamura, Sadanori
name: Yasuda, Naoki
name: Shimasaku, Kazuhiro
name: Yagi, Masafumi
name: Weinberg, David H.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We show that the growth curves of galaxies can be used to determine their bulge and disk parameters and bulge-to-total luminosity ratios, in addition to their conventional asymptotic magnitudes, provided that the point spread function is accurately known and signal-to-noise ratio is modest (S/N$\gtrsim30$). The growth curve is a fundamental quantity that most future large galaxy imaging surveys will measure. Bulge and disk parameters retrieved from the growth curve will enable us to perform statistical studies of luminosity structure for a large number of galaxies.
description: 28 pages including 13 PS figures; accepted for publication in PASP
Extended generalized recurrence plot quantification of complex circular patterns
Creators: name: Riedl, Maik
name: Marwan, Norbert
name: Kurths, Jürgen
Publisher: name: arXiv
Year: 2024
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Chaotic Dynamics (nlin.CD)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The generalized recurrence plot is a modern tool for quantification of complex spatial patterns. Its application spans the analysis of trabecular bone structures, Turing patterns, turbulent spatial plankton patterns, and fractals. Determinism is a central measure in this framework quantifying the level of regularity of spatial structures. We show by basic examples of fully regular patterns of different symmetries that this measure underestimates the orderliness of circular patterns resulting from rotational symmetries. We overcome this crucial problem by checking additional structural elements of the generalized recurrence plot which is demonstrated with the examples. Furthermore, we show the potential of the extended quantity of determinism applying it to more irregular circular patterns which are generated by the complex Ginzburg-Landau-equation and which can be often observed in real spatially extended dynamical systems. So, we are able to reconstruct the main separations of the system's parameter space analyzing single snapshots of the real part only, in contrast to the use of the original quantity. This ability of the proposed method promises also an improved description of other systems with complicated spatio-temporal dynamics typically occurring in fluid dynamics, climatology, biology, ecology, social sciences, etc.
description: 10 pages, 7 figures
Theoretical study of the dissolution of copper from chalcopyrite
Creators: name: Chen, Vincent Huair-Yu
Publisher: name: Imperial College London
Year: 2016

description: A lot is unknown about the chemical mechanisms relevant to the dissolution of Cu from CuFeS2. This is a severe problem in the context of hydrometallurgical extraction, as it is currently not possible to obtain economical Cu yields from CuFeS2 mineral. In this work, periodic hybrid-exchange density functional calculations have been performed on CuFeS2 bulk and slabs representing various surface orientations. In the bulk study, geometric, electronic and magnetic properties of the ground state have been obtained and compared with experiment to validate the density functional methodol- ogy. In addition, the bonding properties of CuFeS2 have been studied, leading to the conclusion that CuFeS2 is semi-ionic. From the slab calculations, the surface energetics have been used to predict the surface morphology of CuFeS2, and hence the surface orientations likely to be exposed upon cleavage. In particular, the polar (112)/(-1-1-2) surface pair featured heavily in the predicted equilibrium crystallites due to its remarkably low surface energy. The stability of the surface pair was attributed to a combination of geometric and electronic stabilisation mechanisms. In the final part of this work, an attempt was made to develop a QM/MM embedded cluster methodology for the purpose of studying Cu dissolution mechanisms. The methodology was benchmarked against the periodic QM methodology employed in the study of CuFeS2 bulk and surfaces. The embedded cluster methodology was in general able to accurately reproduce the periodic QM electronic structure. However, the potential energy surfaces and optimised geometries predicted by the embedded cluster methodology differed significantly to those obtained from periodic slab calculations. The developed methodology was therefore deemed to be unsuitable for further study; this is likely due to the inability of the embedding charges to robustly model long range electrostatic interactions.
Safety case for the introduction of new technology into an existing railway system
Creators: name: Smith, Peri
Publisher: name: Imperial College London
Year: 2016

description: This thesis addresses safety in the railway industry with a focus on safety culture, defined by the United Kingdom’s Health and Safety Executive as ‘the behavioural aspects (i.e. what people do) and the situational aspects of the company (i.e. what the organisation has)’. Current safety management systems do not appropriately incorporate safety culture. This has the potential to cause serious harm to human life. As the definition implies, safety culture is not easily measured or quantified. It involves factors that influence human behavior in safety critical and technology dense environments such as the railway environment. Furthermore, as railways become more advanced in their operational capabilities and integrated across European countries, safety culture will become increasingly important. Therefore, safety culture should be a key component of an organisation’s safety management system. However, research to date has shown its integration to be piecemeal. To address this problem, this thesis specifies an enhanced safety case that uses safety culture as an integral part of the process. This provides an improved approach towards safety management. The key findings from this research show that railways are inherently safe. This is primarily due to the regulations across technical and operational disciplines. Regulations and procedures typically relate to the three possible operational states that can occur: normal, degraded and emergency. An example of a degraded operational state includes a signal failure where a train driver may be given the permission to proceed at caution. The variability between the states can affect a humans understanding of the various technical interfaces and their emergent properties. This in turn can affect the type of behaviour exhibited by a driver, signaller, controller or maintainer. System architecture is therefore an essential tool to identify functional and physical relationships and can be used as a training tool. Training was found to be an effective measure to practically test and evaluate safety culture behaviours. Specifically, the use of a simulated environment has shown to be efficient for learning and training exercises and can be used to improve an organisations safety management system. The safety case derived in this thesis is therefore, driven by the safety management system and is optimised by an understanding of the particular environment and the user interfaces. The process of integrating safety culture is shown through the improved and derived safety assessment process developed in the thesis.