cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Isotropic non-Gaussian $g_\mathrm{NL}$-like toy models that reproduce the cosmic microwave background anomalies
Creators: name: Hansen, F. K.
name: Trombetti, T.
name: Bartolo, N.
name: Natale, U.
name: Liguori, M.
name: Banday, A. J.
name: Górski, K. M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Based on recent observations of the cosmic microwave background (CMB), claims of statistical anomalies in the properties of the CMB fluctuations have been made. Although the statistical significance of the anomalies remains only at the $\sim2-3σ$ significance level, the fact that there are many different anomalies, several of which support a possible deviation from statistical isotropy, has motivated a search for models that provide a common mechanism to generate them. The goal of this paper is to investigate whether these anomalies could originate from non-Gaussian cosmological models, and to determine what properties these models should have. We present a simple isotropic, non-Gaussian class of toy models that can reproduce six of the most extensively studied anomalies. We compare the presence of anomalies found in simulated maps generated from the toy models and from a standard model with Gaussian fluctuations. We show that the following anomalies, as found in the Planck data, commonly occur in the toy model maps: (1) large-scale hemispherical asymmetry (large-scale dipolar modulation), (2) small-scale hemispherical asymmetry (alignment of the spatial distribution of CMB power over all scales $\ell=[2,1500]$) , (3) a strongly non-Gaussian hot or cold spot, (4) a low power spectrum amplitude for $\ell<30$, including specifically (5) a low quadrupole and an unusual alignment between the quadrupole and the octopole, and (6) parity asymmetry of the lowest multipoles. We note that this class of toy model resembles models of primordial non-Gaussianity characterised by strongly scale-dependent $g_{NL}$-like trispectra.
description: 11 pages, 10 figures, version accepted for publication in A&A
Quality-aware overload management for stream processing
Creators: name: Fiscato, Marco
Publisher: name: Imperial College London
Year: 2012

description: Data stream processing systems (DSPSs) compute real-time queries over continuously changing streams of data. A stream is a potentially infinite sequence of tuples, or timestamped data items. The constant increase in data volume renders the provisioning of a DSPS challenging, requiring computing resources that may not be available or too costly to purchase. Even if a user opts for a cloud deployment model, thus renting all resources on demand, acquiring sufficient resources may still not be possible due to the financial cost. In the future, we can expect the development of processing infrastructures, in which different parties cooperate to create federated resource pools. These kinds of deployments, in which many parties pool together their resources, are subject to a phenomenon similar to the tragedy of the commons. Since every party tends to consume more resources than they contribute, the amount of available resources is always scarce. For these reasons, overload should be considered a common operating condition for such DSPS and not an exception. In such situations, the system needs to discard some of its input data, which is an operation called load-shedding. When an overloaded system performs load-shedding, the choice of how much and what to discard is crucial for the correct functioning of the system. Many streaming applications are able to produce useful results even after some data has been discarded during the processing. Examples of such applications are meso-scale weather prediction, better tor- nadoes and hurricanes forecasting and real-time social media monitoring. An approximate result may still be useful to the user, as long as it is delivered with a low latency and contains some information about its quality. We propose a new model for federated stream processing under overload. The system constantly es- timates the impact of overload on the computation and reports to the user the achieved processing quality. We introduce a quality metric called Source Coverage Ratio (SCR). This can be used by the user as an indicator for the achieved processing quality and by the system to implement intelligent shedding policies and to better allocate the system resources among users. The SCR quality metric allows the implementation of a fair shedding policy, giving an equal processing quality to all users without penalising individual queries. We experimentally show that augmenting streams with the SCR metric allows the system to make better load-shedding decisions, leading to more accurate results for many types of queries. It also allows the user to reason about the amount of processing resources that are needed to run a given query, striking a balance between the quality of the delivered results and the resource cost.
Atomic Scale Interfacial Transport at an Extended Evaporating Meniscus
Creators: name: Akkus, Yigit
name: Koklu, Anil
name: Beskok, Ali
Publisher: name: arXiv
Year: 2018
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Chemical Physics (physics.chem-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Recent developments in fabrication techniques enabled the production of nano- and angstrom-scale conduits. While scientists are able to conduct experimental studies to demonstrate extreme evaporation rates from these capillaries, theoretical modeling of evaporation from a few nanometers or sub-nanometer meniscus interfaces, where adsorbed film, transition film and intrinsic region are intertwined, is absent in the literature. Using the computational setup constructed to identify the detailed profile of a nano-scale evaporating interface, we discovered the existence of lateral momentum transport within and associated net evaporation from adsorbed liquid layers, which are long believed to be at the equilibrium established between equal rates of evaporation and condensation. Contribution of evaporation from the adsorbed layer increases the effective evaporation area, reducing the excessively estimated evaporation flux values. This work takes the first step towards a comprehensive understanding of atomic/molecular scale interfacial transport at extended evaporating menisci. The modeling strategy used in this study opens an opportunity for computational experimentation of steady-state evaporation and condensation at liquid/vapor interfaces located in capillary nano-conduits.
Struthio Linnaeus, 1758, gen. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Struthioniformes
Struthionidae
Struthio

description: Struthio [gen. nov.]
Rostrum conicum.
Alae ad volandum ineptae.
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 155, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Benefits of coordination of flexible devices and probabilistic security standard in transmission network operation
Creators: name: Chen, Yanfei
Publisher: name: Imperial College London
Year: 2016

description: Currently, transmission network security is treated within a deterministic and preventive control framework where network constraints and balancing costs are not fully optimised. This may be inefficient and lead to increased levels of congestion, potentially increasing cost of integration associated with low-carbon generation. In this context, this thesis assesses the effects of coordinating FACTS and HVDC transmission systems under both deterministic and probabilistic security frameworks and assuming an array of available preventive/corrective control actions. An deterministic/probabilistic cost-benefit model has been developed for assessing the economic and reliability performance of alternative control strategies enabled by coordination of flexible devices. Results demonstrate that probabilistic security for flexible AC/DC devices coordination is significantly more beneficial since it can lead to lower operating costs, increased infrastructure utilisation and improved reserve allocation across GB network. The framework is further developed to explicitly consider the likelihood of post-contingency events and wind uncertainty. A tight MILP representation, two novelty transmission losses penalty items and scenario reduction model are proposed to reduce computational burden in the large-scale system. Results demonstrate the advantages of probabilistic security to improving the overall efficiency of the system when integrate uncertain renewable generation. Adding flexible network technology could even increase system costs under a preventive security approach. Finally, a novel two-stage stochastic optimization model that incorporates effect of dynamic line rating (DLR) on transmission network operation with increased penetration of wind generation is proposed. The stochastic model co-optimizes energy and reserve holding levels for the forecasted/expected condition along with re-dispatch actions under real-time operation. The benefits of using DLR are demonstrated in terms of overall cost minimization, albeit reserve levels may be increased due to DLR uncertainty. Results also demonstrate that reserve services can be shared among multiple uncertainties. The impacts of forecast accuracy and reserve price on the performance of DLR is discussed.
Speed-of-light pulses in a nonlinear Weyl equation
Creators: name: Cuevas-Maraver, J.
name: Kevrekidis, P. G.
name: Mertens, F. G.
name: Saxena, A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We introduce a prototypical nonlinear Weyl equation, motivated by recent developments in massless Dirac fermions, topological semimetals and photonics. We study the dynamics of its pulse solutions and find that a localized one-hump initial condition splits into a localized two-hump pulse, while an associated phase structure emerges in suitable components of the spinor field. For times larger than a transient time $t_s$ this pulse moves with the speed of light (or Fermi velocity in Weyl semimetals), effectively featuring linear wave dynamics and maintaining its shape (both in two and three dimensions). We show that for the considered nonlinearity, this pulse represents an exact solution of the nonlinear Weyl (NLW) equation. Finally, we comment on the generalization of the results to a broader class of nonlinearities and on their emerging potential for observation in different areas of application.
description: 7 pages, 6 figures
What Controls the Star Formation in Luminous Starburst Mergers ?
Creators: name: Taniguchi, Yoshiaki
name: Ohyama, Youichi
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In order to understand what controls the star formation process in luminous starburst mergers (e.g., NGC 6240, Arp 220, and so on), we investigate observational properties of two samples of high-luminosity starburst galaxies mapped in CO($J$=1--0) independently using both the Owens Valley Radio Observatory (Scoville et al. 1991) and the IRAM interferometer (Downes & Solomon 1998). We find that the surface density of far-infrared luminosity, $Σ$(FIR), is proportional linearly to the H$_2$ surface mass density, $Σ$(H$_2$), for the two samples; $Σ$(FIR) $\propto Σ$(H$_2$)$^{1.01\pm0.06}$ with a correlation coefficient of 0.96. It is often considered that $Σ$(FIR) provides a good measure of the star formation rate per unit area, $Σ$(SFR). It is also known that molecular gas is dominated in circumnuclear regions in the luminous starburst mergers; i.e., $Σ$(gas) $\simeq Σ$(H$_2$). Therefore, the above relationship suggests a star formation law; $Σ$(SFR) $\propto Σ$(gas). We suggest that this star formation law favors the gravitational instability scenario rather than the cloud-cloud collision one.
description: 14 pages, 2 figures. The Astrophysical Journal (Letters), in press
title: ADCO, Cart. 186 (11 H 71), f. 0068r
Creators: name: de la Côte d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CBMA/CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, t. II (XVe siècle), tome II, Archives départementales de la Côte-d'Or, C
art. 186 (11 H 71). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, t. II (XVe siècle), tome II, Archives départementales de la
 Côte-d'Or, Cart. 186 (11 H 71), f. 0068r, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-
project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
Non-contingecy in a paraconsistent setting
Creators: name: Kozhemiachenko, Daniil
name: Vashentseva, Liubov
Publisher: name: arXiv
Year: 2024
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics

description: We study an extension of First Degree Entailment (FDE) by Dunn and Belnap with a non-contingency operator $\blacktriangleϕ$ which is construed as "$ϕ$ has the same value in all accessible states" or "all sources give the same information on the truth value of $ϕ$". We equip this logic dubbed $\mathbf{K}^\blacktriangle_\mathbf{FDE}$ with frame semantics and show how the bi-valued models can be interpreted as interconnected networks of Belnapian databases with the $\blacktriangle$ operator modelling search for inconsistencies in the provided information. We construct an analytic cut system for the logic and show its soundness and completeness. We prove that $\blacktriangle$ is not definable via the necessity modality $\Box$ of $\mathbf{K_{FDE}}$. Furthermore, we prove that in contrast to the classical non-contingency logic, reflexive, $\mathbf{S4}$, and $\mathbf{S5}$ (among others) frames \emph{are definable}.
Scalable soft matter patterning from the macro to the nanoscale
Creators: name: Nania, Manuela
Publisher: name: Imperial College London
Year: 2017

description: Surface patterning is important for a range of engineering applications, including controlled wetting and spreading of liquids, adhesion and assembly of smart coatings. There is therefore a need of simple, cost-effective and scalable techniques for pattern formation over a wide range of scales. Conventional methods fail to comply with these requirements, as costs and complexity increase in the attempt to impress nm to µm scale features. By contrast, wrinkling of bi-(multi- )layers is inherently inexpensive, scalable and robust, and has the potential for soft matter patterning from the nano- to the macro-scale. This work investigates the controlled multi-layer generation of polydimethylsiloxane (PDMS) glassy skins via surface oxidation using plasma exposure and/or ultraviolet ozonolysis (UVO). Uniaxial mechanical compression is then employed to induce pattern formation via a well-known wrinkling instability. Topographies with wavelengths down to 45 nm are achieved, for the first time, as well as features with characteristic lengthscales of ∼ 10s µm. Moreover, simple design routes for double frequency nested pattern formation, imposed by compression of tri-layer laminate films, are established. The work concludes by exploiting wrinkling as a method for the mechanical characterisation of thin drying films. A time-resolved wrinkling interrogation during film drying is established as a simple and reliable approach to determining evolving mechanical properties of films, overcoming the difficulties associated with handling very thin free-standing films and the limited sensitivity of conventional methods, with potential applications extending to coatings, personal care items, and foods.
Lettre de Esprit-Claude-François Calvet à Jean-François Séguier, 1766-12-04
Creators: name: Calvet, Esprit-Claude-François
name: Esprit-Claude-François Calvet
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2021
Subjects: Santé
Collections

description: [transcription] Monsieur

Votre lettre m'afflige et me met dans la plus grande peine. Vous m'apprenez que vous êtes malade et vous me laissez craindre que ce ne soit quelque chose de sérieux en ne m'écrivant pas de votre main. Il n'en faut pas d'avantage pour me jeter dans des inquiétudes. Vous m'obligerez, Monsieur, de me donner de vos nouvelles dès que vous le pourrez sans commodité et sans danger.

J'aireçu le louis pour ce portrait, cette précaution de votre part n'était point du tout nécessaire. Le peintre avait commencé de l'ébaucher, j'y tiendrai la main sans le presser, je suis assuré qu'il fera bien, et dès que la couleur sera sèche et en état de souffrir le transport je vous l'enverraiavec les précautions marquées.

[fol. 82v] J'avais écris en dernier lieu comme vous le souhaitiez à M. Bertrand à Varsovie et j'avais fait passer ma lettre par les mains de M. son fils à Berne ou Yverdon. M. Bertrand fils m'a répondu et me marque que M. son père va se rendre bientôt à Paris et qu'il se propose de m'écrire dès qu'il y sera arrivé. Si vous avez quelque chose que vous vouliez luidire, je vous prie de me le marquer, c'est dans cette vue que je vous écris par la poste.

Conservez vous, Monsieur, pour le bonheur de vos amis et pour la gloire des lettres et comptez toujours sur l'attachement que je vous ai voué pour la vie. C'est dans ces sentiments que je suis

Monsieur

Votre très humble et très obéissant serviteur

Calvet

Avignon ce 4 décembre 1766
description: [personnes citées] Élie Bertrand, Jean-Charles Bertrand fils
description: Source: [lieu de Conservation] Nîmes, Bibliothèque Carré d'Art [cote]ms. 140, fol. 82-82v
description: Source: ark:/12148/btv1b10015185m
Additional file 1: of Sensitivity and specificity of using trial-of-antibiotics versus sputum mycobacteriology for diagnosis of tuberculosis: protocol for a systematic literature review
Creators: name: Divala, Titus
name: Fielding, Katherine
name: Marriott Nliwasa
name: Sloan, Derek
name: Ankur Gupta-Wright
name: Corbett, Elizabeth
Publisher: name: figshare
Year: 2018
Subjects: subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Search strategy for Embase and Global Health in Ovid Embase. (DOCX 18 kb)
Fire sales and systemic risk in financial networks
Creators: name: Schaanning, Eric Finn
Publisher: name: Imperial College London
Year: 2016

description: This thesis studies systemic risk through direct and indirect contagion in financial networks. The first and main part is devoted to modelling the phenomenon of fire sales in a network of financial institutions with common asset holdings, subject to leverage or capital constraints. In contrast to balance sheet contagion based on direct linkages, this price-mediated contagion occurs through common asset holdings, which we quantify through liquidity-weighted overlaps across portfolios. Exposure to price-mediated contagion leads to the concept of indirect exposure to an asset class, as a consequence of which the risk of a portfolio depends on the network of overlapping portfolios. Our model provides an operational systemic stress testing framework for quantifying the exposure of the financial system to these effects. Using data from the European Banking Authority, we examine the exposure of the EU banking system to price-mediated contagion. Our results indicate that, even with optimistic estimates of market depth, moderately large macro-shocks may trigger fire sales which lead to substantial losses across bank portfolios, modifying the outcome of bank stress tests. Moreover, we show that price-mediated contagion leads to a heterogeneous cross-sectional loss distribution across banks, which cannot be replicated simply by applying a discount factor to portfolios. We propose a bank-level indicator, based on liquidity-weighted overlaps of portfolios which can be used to quantify the contribution of a financial institution to price-mediated contagion. Using a granular supervisory dataset, we show that asset class aggregation has a considerable effect on estimated portfolio-level fire sales losses, an issue ignored in the literature so far. The second part presents an in-depth sensitivity analysis of the Eisenberg & Noe model, a framework commonly used in systemic risk studies. We develop a Taylor series for the clearing vector and characterise it in terms of estimation errors in the liabilities matrix.
Lyapunov exponents of quantum trajectories beyond continuous measurements
Creators: name: Yusipov, I. I.
name: Vershinina, O. S.
name: Denisov, S. V.
name: Kuznetsov, S. P.
name: Ivanchenko, M. V.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum systems interacting with their environments can exhibit complex non-equilibrium states that are tempting to be interpreted as quantum analogs of chaotic attractors. Yet, despite many attempts, the toolbox for quantifying dissipative quantum chaos remains very limited. In particular, quantum generalizations of Lyapunov exponent, the main quantifier of classical chaos, are established only within the framework of continuous measurements. We propose an alternative generalization which is based on the unraveling of a quantum master equation into an ensemble of so-called 'quantum jump' trajectories. These trajectories are not only a theoretical tool but a part of the experimental reality in the case of quantum optics. We illustrate the idea by using a periodically modulated open quantum dimer and uncover the transition to quantum chaos matched by the period-doubling route in the classical limit.
description: 5 pages, 4 figures
The Palomar Testbed Interferometer
Creators: name: Colavita, M. M.
name: Wallace, J. K.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Palomar Testbed Interferometer (PTI) is a long-baseline infrared interferometer located at Palomar Observatory, California. It was built as a testbed for interferometric techniques applicable to the Keck Interferometer. First fringes were obtained in July 1995. PTI implements a dual-star architecture, tracking two stars simultaneously for phase referencing and narrow-angle astrometry. The three fixed 40-cm apertures can be combined pair-wise to provide baselines to 110 m. The interferometer actively tracks the white-light fringe using an array detector at 2.2 um and active delay lines with a range of +/- 38 m. Laser metrology of the delay lines allows for servo control, and laser metrology of the complete optical path enables narrow-angle astrometric measurements. The instrument is highly automated, using a multiprocessing computer system for instrument control and sequencing.
description: ApJ in Press (Jan 99) Fig 1 available from http://huey.jpl.nasa.gov/~bode/ptiPicture.html, revised duging copy edit
Additional file 1: of Lower mortality after early supervised pulmonary rehabilitation following COPD-exacerbations: a systematic review and meta-analysis
Creators: name: RyrsĂ¸, Camilla
name: Godtfredsen, Nina
name: Kofod, Linette
name: Lavesen, Marie
name: Mogensen, Line
name: Tobberup, Randi
name: Farver-Vestergaard, Ingeborg
name: Callesen, Henriette
name: Tendal, Britta
name: Lange, Peter
name: Iepsen, Ulrik
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Biotechnology
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: Computational Biology

description: Search strategy. The full search strategy from the systematic multidatabase literature search performed in 2013 and 2017. (PDF 214 kb)
Machine learning and option implied information
Creators: name: Zheng, Yu
Publisher: name: Imperial College London
Year: 2017

description: The thesis consists of three chapters which focus on two broad topics, applying machine learning in ﬁnance (Chapters 1 and 2) and extracting implied information from options (Chapter 3). In Chapter 1, I combine the data-driven approach from the machine learning community and economic theory from the ﬁnance community to design a deep neural network to estimate the implied volatility surface. Chapter 2 is a second example of applying machine learning in ﬁnance. Yang et al. [2017] proposes a gated neural network for pricing European call options. Yang et al. [2017] is rewritten in this chapter using the general framework introduced in Chapter 1. In Chapter 3, I provide a solution to the following question. Is there any ﬂexible implementation framework to derive the conditional risk neutral density of any arbitrary period of return and calculate corresponding statistics, namely, implied variance, implied skewness and implied kurtosis from option prices? I solve this problem by proposing a framework combining implied volatility surface and Automatic Differentiation [Rall, 1981, Neidinger, 2010, Griewank and Walther, 2008, Baydin et al., 2015].
Internal-wave convection and shear near the top of a deep equatorial seamount
Creators: name: van Haren, Hans
Publisher: name: arXiv
Year: 2024
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: The near-equatorial ocean experiences particular dynamics because the Coriolis force is weak. One modelled effect of these dynamics is strong reduction of turbulent mixing in the ocean interior. Unknowns are effects on internal wave breaking and associated turbulent mixing above steeply sloping topography. In this paper, high-resolution temperature observations are analyzed from sensors that were moored near the top of a deep Ceara Basin seamount for one week. A vertical string held sensors between 0.4 and 56.4 meters above the seafloor. The observations show common semidiurnal-periodic internal wave breaking, with tidal- and 56-m mean turbulence values that are not significantly different from those observed near the top of 1000-m shallower mid-latitude Great Meteor Seamount, despite the twice lower vertical density stratification. Profiles of 6-day mean turbulence values yield vertically uniform values except for a small decrease in the lower 2 m above the seafloor. The lower 2-m show a distinct departure from turbulent inertial subrange in temperature variance spectra. In 10-m higher-up, spectral slopes indicate dominant turbulent convection with reduced flow and turbulence, except when a primary tidal bore is present. Further-up than 15 m, shear dominates (stratified) turbulence. The lack of Coriolis force is not found to be important for internal wave-induced turbulence above steeply sloping topography, except that Kelvin-Helmholtz instabilities seem somewhat less chaotic and more organized roll-up than at mid-latitudes.
description: 32 pages, 11 figures
title: 02_0727
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Rapid variability in the synchrotron self Compton model for blazars
Creators: name: Chiaberge, Marco
name: Ghisellini, Gabriele
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Blazars are characterized by large amplitude and fast variability, indicating that the electron distribution is rapidly changing, often on time scales shorter than the light crossing time. The emitting region is sufficiently compact to let radiative losses dominate the cooling of high energy electrons. We study the time dependent behaviour of the electron distribution after episodic electron injection phases, and calculate the observed synchrotron and self Compton radiation spectra. Since photons produced in different part of the source have different travel times, the observed spectrum is produced by the electron distribution at different stages of evolution. Even a homogeneous source then resembles an inhomogeneous one. Time delays between the light curves of fluxes at different frequencies are possible, as illustrated for the specific case of the BL Lac object Mkn 421.
description: 11 pages, 11 figures, Submitted to MNRAS, revised version after referee's report
Investigating the role of the secreted tumour suppressor Dickkopf-3 in stromal-epithelial interactions in prostate cancer
Creators: name: Al-Shareef, Zainab
Publisher: name: Imperial College London
Year: 2017

description: DKK3 is a tumour suppressor gene encoding a secreted protein, Dkk-3, which is found in benign prostate and prostate cancer stroma. Dkk-3 maintains normal prostate epithelial acinar morphogenesis by limiting TGF-β/Smad/matrix metalloproteinase signalling. The role of stromal Dkk-3 was investigated in this thesis. The human prostate stromal cell line, WPMY-1, secreted a high level of Dkk-3 that was further increased by TGF-β. DKK3 gene silencing increased TGF-β-dependent signalling and migration, but did not affect proliferation. WPMY-1 cell co-culture and WPMY-1 cell conditioned media reduced proliferation and rescued acinar morphogenesis of the DKK3-silenced RWPE-1 prostate epithelial cells in a Dkk-3-dependent manner. DKK3-silenced WPMY-1 cell conditioned media increased PC3 prostate cancer cell invasion probably in an MMP2-dependent manner. Control and DKK3-silenced conditioned media were compared using an antibody array, identifying two proteins, TGFBI and ECM-1, that were affected by DKK3 silencing. DKK3 silencing increased TGFBI and reduced ECM-1 in WPMY-1 cell conditioned media, and increased both TGFBI and ECM-1 in RWPE-1 cell conditioned media. Purified recombinant TGFBI, but not ECM1, increased PC3 cell invasion, and purified ECM1, but not TGFBI, increased normal acinar morphogenesis of DKK3-silenced RWPE-1 cells. Immunohistochemical analysis of Dkk-3, TGFBI and ECM-1 in prostate cancer showed significantly lower levels of Dkk-3 in prostate cancer than in benign epithelium and in tumour stroma compared to benign stroma. TGFBI levels were higher in prostate cancer than in benign prostate epithelium and were inversely correlated with Dkk-3 expression. ECM-1 was highly expressed in cancer, and correlated with Dkk-3 and TGFBI levels in low-Gleason-score cancer stroma. Together, these in vitro studies and the immunohistochemical data support a model in which stromal Dkk-3 plays a protective role in prostate cancer, and the downregulation of Dkk-3 leads to an increased expression of TGFBI, which may promote prostate tumour cell invasion.
Struthio camelus Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Struthioniformes
Struthionidae
Struthio
Struthio camelus

description: Struthio camelus [spec. nov.]
S. pedibus didactylis.
Struthio-Camelus. Aldr. orn. l. 9. c. 2. Dodart. mem. 335. Seb. mus. 1. t. 51. f. 6. Will. ornith. 104. t. 25. Raj. av. 36. Alb. av. 3. p. 30. t. 31.
Habitat in Syria, Arabia, Lybia, Africa.
Spina sub humeris armatur, maxima Avium; Palpebra utraque ciliata. Exterior digitus muticus. Pennae lanatae pro galeis bellicis cristaque castrensi. Ova saepe 50, candida, laevia, in arena excludenda deserta. Job. 39: 16.
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 155, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
title: ADCO, Boursier de Cîteaux : comptes (1489-1493) (11 H 1166), f. 00478
Creators: name: de la Côte-d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: 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: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: comptes
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Boursier de Cîteaux : comptes (1489-1493), Archives départementales de la Côte-d'Or, (11 H 1166). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Boursier de Cîteaux : comptes (1489-1493), Archives départementales de la Côte-d'Or, (11 H 1166), f. 00478, in Projet CBMA - Corpus Burgundiae Medii Aevi \[Ressource en ligne\], https:// manuscrits.cbma-project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
Stellar Kinematics of the Double Nucleus of M31
Creators: name: Statler, Thomas S.
name: King, Ivan R.
name: Crane, Philippe
name: Jedrzejewski, Robert I.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report observations of the double nucleus of M31 with the f/48 long-slit spectrograph of the HST Faint Object Camera. We obtain a total exposure of 19,000 sec. over 7 orbits, with the 0.063-arcsec-wide slit along the line between the two brightness peaks (PA 42). A spectrum of Jupiter is used as a spectral template. The rotation curve is resolved, and reaches a maximum amplitude of ~250 km/s roughly 0.3 arcsec either side of a rotation center lying between P1 and P2, 0.16 +/- 0.05 arcsec from the optically fainter P2. We find the velocity dispersion to be < 250 km/s everywhere except for a narrow ``dispersion spike'', centered 0.06 +/- 0.03 arcsec on the anti-P1 side of P2, in which sigma peaks at 440 +/- 70 km/s. At much lower confidence, we see local disturbances to the rotation curve at P1 and P2, and an elevation in sigma at P1. At very low significance we detect a weak asymmetry in the line-of-sight velocity distribution opposite to the sense usually encountered. Convolving our V and sigma profiles to CFHT resolution, we find good agreement with the results of Kormendy & Bender (1998, preprint), though there is a 20% discrepancy in the dispersion that cannot be attributed to the dispersion spike. Our results are not consistent with the location of the maximum dispersion as found by Bacon et al. We find that the sinking star cluster model of Emsellem & Combes (1997) does not reproduce either the rotation curve or the dispersion profile. The eccentric disk model of Tremaine (1995) fares better, and can be improved somewhat by adjusting the original parameters. However, detailed modeling will require dynamical models of significantly greater realism.
description: 29 pages, Latex, AASTeX v4.0, with 7 eps figures. To appear in The Astronomical Journal, February 1999
Controlling microbubble dynamics in ultrasound therapy
Creators: name: Pouliopoulos, Antonios Nikolaos
Publisher: name: Imperial College London
Year: 2016

description: Microbubble-mediated focused ultrasound therapies such as blood-brain barrier opening, sonothrombolysis, and sonoporation can non-invasively deliver drugs to a targeted region. Despite the potential impact this technology could have in the clinic, there are currently concerns regarding its efficacy, uniformity and safety. These challenges ultimately stem from a limited ability to control the microbubble dynamics during ultrasound exposure. In the current thesis, we sought to design ultrasound exposure sequences and develop monitoring techniques that promote the desired acoustic cavitation activity and suppress unwanted stimuli that do not produce a safe therapeutic bioeffect. For example, violent cavitation activity could cause irreversible damage within the treatment area. The behaviour of microbubble populations exposed to low-power therapeutic ultrasound was first qualitatively studied using high-speed microscopy. Microbubbles were found to form large clusters within milliseconds of exposure and collectively coalesce into larger bubbles. Based on these observations and findings in the literature, new therapeutic sequences were designed and tested. Rapid short-pulse sonication consisted of μs-long pulses separated by short off-times. When compared to conventional ultrasound sequences, this pulse sequence enhanced the lifetime and mobility of cavitation nuclei and resulted in more uniform acoustic activity distributions. To better monitor ultrasound treatment as it evolves, we developed a method that passively measures microbubble velocities via the Doppler effect emerging in the microbubble acoustic emissions. Using standard passive cavitation detection techniques in one and two dimensions, we estimated microbubble velocities on the order of m s-1 during ultrasound exposure. Finally, we tested our new therapeutic design in a mouse model in order to improve the safety of blood-brain barrier opening. We achieved drug delivery with a similar magnitude but with a better uniformity compared to conventional sequences, thus demonstrating evidence of favourable microbubble dynamics within the targeted region. Taken together, our contribution in ultrasonic stimulation using new sequences and monitoring using passive acoustic detection techniques improves our control of microbubble dynamics in ultrasound therapy and has the potential to promote treatment efficacy and suppress unwanted damage.
Spectral Synthesis of the Nuclear Region of Seyfert 2 and Radio Galaxies
Creators: name: Schmitt, Henrique R.
name: Storchi-Bergmann, Thaisa
name: Fernandes, Roberto Cid
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of an optical spectral synthesis analysis for the nuclei of 20 Seyfert 2 and 4 Radio Galaxies, using a base of stellar population templates of different ages and metallicities and a power-law continuum. Compared with the stellar population of elliptical galaxies, we find that Seyfert 2s usually have a smaller contribution from old metal rich stars (10 Gyr, Z>=Z_o), and a larger contribution from stars with 100 Myr. We also find that the contributions from stars with age <=10 Myr and from a power law continuum are small, rarely exceeding 5 per cent. These results show that the general assumption of elliptical galaxies as stellar population templates for these objects is incorrect, also implying that the excess blue continuum frequently found in their nuclear spectra is probably due to this template mismatch. We find a considerable contribution from 100 Myr stars (~5 per cent), which can be interpreted from the point of view of models where the fueling of the AGN is done by interactions/mergers.
description: 6 pages, 1 figure, accepted for publication in MNRAS
Convolutional Neural Network Architectures for Signals Supported on Graphs
Creators: name: Gama, Fernando
name: Marques, Antonio G.
name: Leus, Geert
name: Ribeiro, Alejandro
Publisher: name: arXiv
Year: 2018
Subjects: subject: Signal Processing (eess.SP)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Two architectures that generalize convolutional neural networks (CNNs) for the processing of signals supported on graphs are introduced. We start with the selection graph neural network (GNN), which replaces linear time invariant filters with linear shift invariant graph filters to generate convolutional features and reinterprets pooling as a possibly nonlinear subsampling stage where nearby nodes pool their information in a set of preselected sample nodes. A key component of the architecture is to remember the position of sampled nodes to permit computation of convolutional features at deeper layers. The second architecture, dubbed aggregation GNN, diffuses the signal through the graph and stores the sequence of diffused components observed by a designated node. This procedure effectively aggregates all components into a stream of information having temporal structure to which the convolution and pooling stages of regular CNNs can be applied. A multinode version of aggregation GNNs is further introduced for operation in large scale graphs. An important property of selection and aggregation GNNs is that they reduce to conventional CNNs when particularized to time signals reinterpreted as graph signals in a circulant graph. Comparative numerical analyses are performed in a source localization application over synthetic and real-world networks. Performance is also evaluated for an authorship attribution problem and text category classification. Multinode aggregation GNNs are consistently the best performing GNN architecture.
description: Submitted to IEEE Transactions on Signal Processing
Co-design of FPGA implementations for model predictive control
Creators: name: Khusainov, Bulat
Publisher: name: Imperial College London
Year: 2017

description: Model Predictive Control (MPC) is an advanced control method that is capable of explicit performance optimization, systematic constraint handling and dealing with nonlinearities in a natural way. The necessity of solving an optimization problem at each sampling instant makes MPC a computationally demanding technique, especially when applied to fast dynamical systems. This thesis is concerned with developing efficient hardware implementations of linear and nonlinear model predictive controllers. In the first part of this thesis, a software toolchain for quick prototyping of embedded optimization algorithms on Field-Programmable Gate Arrays (FPGAs) is presented. The toolchain consists of two software tools: SPLIT and Protoip. SPLIT is capable of generating CPU and FPGA-oriented C code for embedded optimization using operator splitting methods. The generated code can be automatically deployed and tested on an embedded platform using a new release of Protoip, a software tool for quick prototyping of optimization algorithm on CPUs, FPGAs and heterogeneous platforms that incorporate both general-purpose processors and reconfigurable logic. The second part presents a framework for implementation of nonlinear model predictive control on a heterogeneous computing platform. Splitting the computational workload between a general-purpose CPU and an FPGA allows exploiting the strengths of each computational subsystem and trading off control performance against reconfigurable logic usage. A new method for scheduling sparse matrix-vector multiplication within the proposed implementation enables significant improvements in terms of memory and computational resources usage. The third part of this thesis presents an application of systematic optimization to the co-design of MPC software and computational hardware. A procedure for formulating the MPC design problem as a multi-objective optimization problem is described. Finally, two test cases including CPU and FPGA-based implementations of predictive controllers are considered.
A revised and extended catalog of Magellanic System clusters, associations and emission nebulae. II. the LMC
Creators: name: Bica, Eduardo L. D.
name: Schmitt, Henrique R.
name: Carlos
name: Dutra, M.
name: Oliveira, Humberto L.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A survey of extended objects in the Large Magellanic Cloud was carried out on the ESO/SERC R and J Sky Survey Atlases, checking entries in previous catalogs and searching for new objects. The census provided 6659 objects including star clusters, emission-free associations and objects related to emission nebulae. Each of these classes contains 3 subclasses with intermediate properties, which are used to infer total populations. The survey includes cross-identifications among catalogs and we present 3246 new objects. We provide accurate positions, classification, homogeneous measurements of sizes and position angles, as well as information on cluster pairs and hierarchical relation for superimposed objects. This unification and enlargement of catalogs is important for future searches of fainter and smaller new objects. We discuss the angular and size distributions of the objects of the different classes. The angular distributions show two off-centered systems with different inclinations, suggesting that the LMC disk is warped. The present catalog together with its previous counterpart for the SMC and the inter-Cloud region provide a total population of 7847 extended objects in the Magellanic System. The angular distribution of the ensemble reveals important clues on the interaction between the LMC and SMC.
description: Accepted for publication in The Astronomical Journal. 11 pages, 4 tables, figures and ASCII version of the catalog can be obtained in http://www.if.ufrgs.br/~dutra/catpage.html