cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Optimal liquidation strategies for large-tick stocks
Creators: name: Liu, Hao
Publisher: name: Imperial College London
Year: 2018

description: This thesis is devoted to study the optimal liquidation strategies in a limit order book for large-tick stocks. Two frameworks are proposed. In the first framework, we formulate a stylised limit order book that admits one-tick spread and fixed market depth cap, in which order flows arrive according to point processes with stochastic intensities. We consider an agent who wants to liquidate a position in this limit order book through market orders and pegged displayed/non-displayed limit orders within a fixed time horizon, and whose goal is to maximise the expected utility from the terminal wealth. For this optimal liquidation problem, we derive the associated Hamilton-Jacobi-Bellman quasi-variational inequality and prove a verification theorem giving sufficient conditions for the HJBQVI solution to be the value function. The optimal strategy is a combined stochastic and impulse control, and is then solved numerically using finite different scheme. In the second framework, we formulate a stylised level-I limit order book whose spread is constantly one tick and whose dynamics are driven by the queueing races at the best prices. Order book events occur according to independent Poisson processes, with parameters depending on the most recent price move direction. Our goal is to maximise the expected terminal wealth of an agent who needs to liquidate a position within a fixed time horizon. By assuming that the agent trades through both limit and market orders only when the price moves, we model her liquidation procedure as a semi-Markov decision process, and compute the semi-Markov kernel using Laplace method in the language of queueing theory. The optimal liquidation policy is then solved by dynamic programming, and illustrated numerically.
title: ADCO, Troisième cartulaire de Saint-Étienne de Dijon (XVIe), Cart. 23 (G 127), 310 folios, f. 00163
Creators: name: de la Côte d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2011
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: Troisième cartulaire de Saint-Étienne de Dijon (XVIe), Archives départementales de la Côte-d'Or, Cart. 23 (G 127), 310 folios, f. 00163, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Troisième cartulaire de Saint-Étienne de Dijon (XVIe), Archives départementales de la Côte-d'Or, Cart. 23 (G 127), 310 folios, f. 00163, 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
X-ray reflection in Galactic Black Hole Candidates: smeared edge profiles and resonant Auger destruction
Creators: name: Ross, R. R.
name: Fabian, A. C.
name: Brandt, W. N.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We consider the spectra of Thomson-thick, geometrically-thin accretion discs around Galactic black hole candidates in the reflection model and compute their iron K edges and iron K$α$ lines. We compare the smeared iron K edge profiles that we compute with observation and find them to be a satisfactory description of the data. We find that a combination of Doppler broadening and resonant Auger destruction of line photons can make iron K$α$ lines very difficult to detect in highly ionized inclined discs. We detail the physics of resonant Auger destruction at the level it is currently understood and point out its implications.
description: uuencoded compressed postscript. The preprint is also available at http://www.ast.cam.ac.uk/preprint/PrePrint.html
Magnetisation reversal in Ising Ferromagnet by Thermal and Field gradients
Creators: name: Datta, Ranajay
name: Acharyya, Muktish
name: Dhar, Abyaya
Publisher: name: arXiv
Year: 2018
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We report the results of the magnetisation reversal in Ising ferromagnet having thermal and field gradients by Monte Carlo simulation. We have studied the distribution of reversal times for different values of thermal and field gradients and compared the results with those obtained for uniform temperature. The movement of the domain wall of distinct domains and the growth of roughness of domain wall have also been studied statistically. The role of competing thermal and field gradients, in the reversal mechanism, was also studied and a line of marginal competition was obtained.
description: 12 pages Latex and 13 captioned figures
Detection and Study of High-Redshift Galaxies Through Cluster-Lenses
Creators: name: Pello, R.
name: Kneib, J. P.
name: Bruzual, G.
name: Miralles, J. M.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss a method to build up and study a sample of distant galaxies, with 2
description: 4 pages, 4 figures, To appear in "The Birth of Galaxies" 10th Rencontres de Blois, June 28 - July 4, 1998
Optimisation and applications of a Raman quantum memory for temporal modes of light
Creators: name: Munns, Joseph
Publisher: name: Imperial College London
Year: 2018

description: Within any practical proposal for utilising quantum mechanics for information processing whether for the efficient computation of problems intractable by classical methods, or for secure communication; at some stage one must have the means to transfer quantum information between remote nodes of a network. For this, light is the obvious choice. To realise this vision one requires the means to overcome the ``scaling problem'' intrinsic to many photonic-based quantum technologies due to probabilistic operations. It has been identified that optical quantum memories which facilitate the storage and retrieval of quantum states of light are an enabling technology. Another requisite technology to ensure the scalability of a quantum network is the means to interface dissimilar material nodes, which in practice means the translation of quantum light in bandwidth, frequency and temporal shape. The first part of this thesis presents experimental, theoretical and numerical investigations of noise reduction in the Raman memory protocol in thermal caesium vapour, by means of a cavity. To do this, I develop a theoretical description of the cavity memory interaction, along with a model of the atom-cavity system to enable meeting the required resonance conditions. This is followed by a proof-of-concept experimental demonstration, showing suppression of noise in the retrieved state. To conclude this part, I investigate the optimisation of this system and provide a numerical framework for its design, and propose a route towards realising the Raman memory as a practical quantum memory. The second theme is an exploration of the practical application of the Raman memory as an interface for temporal modes of light. I perform a preliminary investigation, and develop characterisation tools, to experimentally verify the modal structure of the memory interaction. This work provides the basis for deploying the Raman memory as a temporal-mode selective device for GHz bandwidth quantum states of light.
Investigation of transcriptional and cell cycle regulation in B cell quiescence and activation
Creators: name: Thomsen, Inesa
Publisher: name: Imperial College London
Year: 2018

description: The quiescent state in mature B cells is actively maintained through a transcriptional programme controlled by multiple transcription factors and cofactors. Failure to appropriately regulate the expression of genes in these cells can have serious pathological consequences. This thesis has sought to investigate the role of various transcriptional and cell cycle regulators in these cells, and their importance during B cell activation. To address these questions, a primary cell model system was employed, where mature resting B cells were freshly isolated from mouse spleens. The study describes a functional interaction between the transcription factor heterodimer RUNX1-CBFB, the mitotic kinase AURKB and the Polycomb protein RING1B. Global chromatin occupancy analysis revealed a significant co-localisation of these proteins on promoters and enhancers in resting B cells. The RUNX1-CBFB heterodimer is shown to be a phosphorylation target of AURKB. The kinase activity of AURKB promotes RUNX1 chromatin binding, whereas RUNX1 appears to play a role in AURKB protein stability in resting B cells. In addition to these findings, AURKB is shown to have an inhibitory interaction with the transcription factor FOXO1 in resting B cells. AURKB phosphorylates FOXO1 on sites overlapping with the AKT phosphorylation sites, hindering FOXO1’s DNA binding capacity. The importance of RUNX1 in resting B-cells is highlighted in this study by using a conditional mouse knockout system, in which Runx1 is deleted at the transitional B-cell developmental stage. These Runx1 knockout mice have reduced numbers of splenic resting B-cells and lymph node B-cells. Ex vivo, Runx1 knockout resting B-cells exhibit a hyper-responsive phenotype to mitogenic stimulation. Analyses of the splenic B-cell subsets suggest a possible role for RUNX1 in follicular type I B-cell development or survival. Finally, the evidence presented in this thesis suggests a potential role for RUNX1 in suppressing the development of autoimmunity.
Buceros bicornis Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Bucerotiformes
Bucerotidae
Buceros
Buceros bicornis

description: Buceros bicornis [spec. nov.]
B. fronte ossea plana antrorsum bicorni. Amoen. acad. 4. p ...
Calao Pet. gaz. 43. t. 28. f. 6. & t. 31. f. 1. Will. Ornith. t. 17. f. 1.
Habitat in China.
Corpus magnitudine Gallinae, nigrum; subtus pectore, abdomine, femoribus album. Macula alba in remigibus alarum. Cauda longiuscula. Rectrices 10, nigrae, extimis utrinque albis. Pedes virescentes: digitis 3 anticis; 1 postico.
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 104, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Microlensing By a Prolate All-Macho Halo
Creators: name: Holder, Gilbert P.
name: Widrow, Lawrence M.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It is widely believed that dark matter halos are flattened, that is closer to oblate than prolate. The evidence cited is based largely on observations of galaxies which do not look anything like our own and on numerical simulations which use ad hoc initial conditions. Given what we believe to be a ``reasonable doubt'' concerning the shape of dark Galactic halo we calculate the optical depth and event rate for microlensing of stars in the LMC assuming a wide range of models that include both prolate and oblate halos. We find, in agreement with previous analysis, that the optical depth for a spherical (E0) halo and for an oblate (E6) halo are roughly the same, essentially because two competing effects cancel approximately. However the optical depth for an E6 prolate halo is reduced by ~35%. This means that an all-Macho prolate halo with reasonable parameters for the Galaxy is consistent with the published microlensing event rate.
description: 7 pages (24K), LaTeX; 2 Postscript figures
Coherent fluctuation relations: from the abstract to the concrete
Creators: name: Holmes, Z.
name: Weidt, S.
name: Jennings, D.
name: Anders, J.
name: Mintert, F.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Recent studies using the quantum information theoretic approach to thermodynamics show that the presence of coherence in quantum systems generates corrections to classical fluctuation theorems. To explicate the physical origins and implications of such corrections, we here convert an abstract framework of an autonomous quantum Crooks relation into quantum Crooks equalities for well-known coherent, squeezed and cat states. We further provide a proposal for a concrete experimental scenario to test these equalities. Our scheme consists of the autonomous evolution of a trapped ion and uses a position dependent AC Stark shift.
description: Main Text: 13 pages, 7 figures; Supplementary material: 16 pages, 1 figure. Version 4: Published version (with minor formatting corrections)
Buceros rhinoceros Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Bucerotiformes
Bucerotidae
Buceros
Buceros rhinoceros

description: Buceros rhinoceros [spec. nov.]
B. cornu maxillari frontis recurvato.�
Rhinoceros. Bont. jav. 63. t. 64. Olear. mus. t. 15. f. 4. Will. orn. t. 17. f. 3. Worm. mus. 293. Aldr. orn. l. 12. c. 20.
Habitat in India.
Cum Willugbaeus aliique rostrum extrorsum serratum sistant, videtur Ramphasti potius generis avis esse. Foeda foetidaque cadaveribus victitans venatores comitatur.
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 104, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Quantum error correction and entanglement spectrum in tensor networks
Creators: name: Ling, Yi
name: Liu, Yuxuan
name: Xian, Zhuo-Yu
name: Xiao, Yikang
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A sort of planar tensor networks with tensor constraints is investigated as a model for holography. We study the greedy algorithm generated by tensor constraints and propose the notion of critical protection (CP) against the action of greedy algorithm. For given tensor constraints, a CP tensor chain can be defined. We further find that the ability of quantum error correction (QEC), the non-flatness of entanglement spectrum (ES) and the correlation function can be quantitatively evaluated by the geometric structure of CP tensor chain. Four classes of tensor networks with different properties of entanglement is discussed. Thanks to tensor constraints and CP, the correlation function is reduced into a bracket of Matrix Production State and the result agrees with the one in conformal field theory.
description: Main text: 8 pages, 12 figures. Appendix: 4 pages, 8 figures
Detectability of Solar Rotation Period Across Various Wavelengths
Creators: name: Vasilyev, Valeriy
name: Reinhold, Timo
name: Shapiro, Alexander I.
name: Chatzistergos, Theodosios
name: Krivova, Natalie
name: Solanki, Sami K.
Publisher: name: arXiv
Year: 2025
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The light curves of old G-dwarfs obtained in the visible and near-infrared wavelength ranges are highly irregular. This significantly complicates the detectability of the rotation periods of stars similar to the Sun in large photometric surveys, such as Kepler and TESS. In this study, we show that light curves collected in the ultraviolet wavelength range are much more suitable for measuring rotation periods. Motivated by the observation that the Sun's rotational period is clearly discernible in the UV part of the spectrum, we study the wavelength dependence of the rotational period detectability. We employ the Spectral and Total Solar Irradiance Reconstructions model, SATIRE-S, to characterize the detectability of the solar rotation period across various wavelengths using the autocorrelation technique. We find that at wavelengths above 400 nm, the probability of detecting the rotation period of the Sun observed at a random phase of its activity cycle is approximately 20\%. The probability increases to 80\% at wavelengths shorter than 400 nm. These findings underscore the importance of ultraviolet stellar photometry.
description: published in The Astrophysical Journal Letters
title: A Similarity based Efficiency Model of Spindle Screw Pumps
Creators: name: Schänzle, Christian
name: Corneli, Tobias
name: Pelz, Peter F.
Publisher: name: IOP Publishing
Year: 2022

description: Spindle screw pumps are used in numerous different applications and industrial sectors. When selecting a suitable spindle screw pump for a specified application, manufacturers are often confronted with a lack of comparable measurement data for the desired combination of operating conditions and pumping fluid. Consequently, the volumetric and mechanical-hydraulic efficiency of a pump under the operating conditions of the application need to be estimated. In this context, this paper discusses the application of similarity for three-spindle screw pumps and introduces a similarity based efficiency model. The model is validated by means of a measured pump characteristic at different operating conditions varying pressure, rotational speed and the viscosity of the pumping fluid. The validation results prove that a pump characteristic can be represented over a wide operating range based on similarity. An estimation of the volumetric and the mechanical-hydraulic efficiency at a changed viscosity is achieved with high accuracy. Furthermore, a new approach to monitor and to evaluate manufacturing uncertainty based on the model parameter relative gap is presented. Finally, the paper gives an outlook on future experimental investigations at TU Darmstadt on model series of three-spindle screw pumps containing pumps of different displacement volume.
title: ADCO, Huitième cartulaire de Saint-Étienne de Dijon (1661-1667), Cart. 31 (G 135), 549 folios, f. 0896
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: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP

description: Huitième cartulaire de Saint-Étienne de Dijon (1661-1667), Archives départementales de la Côte-d'Or, Cart. 31 (G 135), 549 folios, f. 0896, 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. 0896, 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
Variations in Solar Luminosity from Time Scales of Minutes to Months
Creators: name: Pelletier, Jon D.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the power spectrum of solar irradiance during 1985 and 1987 obtained from the ACRIM project from time scales of minutes to months. At low frequency the spectra are Lorentzian. At higher frequencies they are proportional to $f^{-{1/2}}$. A linear, stochastic model of the turbulent heat transfer between the granulation layer (modeled as a homogeneous thin layer with a radiative boundary condition) and the rest of the convection zone (modeled as a homogeneous thick layer with thermal and diffusion constants appropriate the lower convection zone) predicts the observed spectrum.
description: latex file, 1 figure
Primary human bronchial epithelial cells during tuberculosis infection
Creators: name: Reuschl, Ann-Kathrin Barbara
Publisher: name: Imperial College London
Year: 2016

description: Infection with Mycobacterium tuberculosis (Mtb) is acquired through the lungs after inhalation of aerosolised bacteria. Epidemiological studies have shown that infection can only be detected in 30-50% of individuals after exposure, suggesting that the immune system can mediate clearance of or resistance to infection. Early responses to infection in an Mtb-naïve host are thought to be championed by the innate immune cells in the lungs, such as alveolar macrophages. However, the majority of cells exposed to inhaled air are epithelial, which line the entirety of the respiratory tract. Their function is not well understood in tuberculosis and almost no studies of primary airway epithelial cells have been undertaken. To identify their contribution to the lung immune responses to Mtb infection, human primary bronchial epithelial cells were interrogated in vitro and ex vivo. Primary bronchial epithelial cells (PBEC) were poor responders to low doses of Mtb in vitro and were markedly less susceptible to infection than macrophages. Large bacterial burden triggered cell death and IL8 release in an NADPH-oxidase dependent manner. Additionally, PBECs were potent responders to myeloid-mediated Mtb-driven inflammation. Myeloid-epithelial cross-talk was, in part, dependent on interleukin 1β and type I interferon-signalling and enhanced the antimicrobial host immune response and neutrophil influx in vitro. Through the assessment of the whole transcriptome and mediator profile of the human airway epithelial lining ex vivo, the in vitro inflammatory epithelial signature could be partially confirmed in patients with suspected pulmonary tuberculosis and Mtb-exposed individuals. Additionally, healthy recently infected Mtb-exposed individuals, showed signs of ongoing low-level immune activation in their nasal and bronchial epithelial mucosa. Taken together, this is the first comprehensive analysis of the human primary airway epithelial response to Mtb-infection and offers new insights into their emerging role in human tuberculosis.
Orbital angular momentum induced by nonabsorbing optical elements through space-variant polarization-state manipulations
Creators: name: Zhang, Dengke
name: Feng, Xue
name: Huang, Yidong
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: To manipulate orbital angular momentum (OAM) carried by light beams, there is a great interest in designing various optical elements from the deep-ultraviolet to the microwave. Normally, the OAM variation introduced by optical elements can be attributed to two terms, namely the dynamic and geometric phases. Up till now, the dynamic contribution induced by optical elements has been clearly recognized. However, the contribution of geometric phase still seems obscure, especially considering the vector vortex beams. In this work, an analytical formula is derived to fully describe the OAM variation introduced by the nonabsorbing optical elements, which perform space-variant polarization-state manipulations. It is found that the geometric contribution can be further divided into two parts: one is directly related to optical elements and the other one explicitly relies solely on the vortices before and after the transformations. Based on this result, the same OAM variation can be achieved with different combinations of the dynamic and/or geometric contributions. With numerical simulations, it is shown that transformation of the optical vortices can be fully and flexibly designed with a family of optical elements. We believe that these results are helpful to understand the effect of optical elements and offer a new perspective to design the optical elements for manipulating the OAM carried by light beams.
description: 13 pages, 8 figures
Supernova 1987A: Rotation and a Binary Companion
Creators: name: Collins, T. J. B.
name: Frank, Adam
name: Bjorkman, J. E.
name: Livio, Mario
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we provide a possible link between the structure of the bipolar nebula surrounding SN1987A and the properties of its progenitor star. A Wind Blwon Bubble (WBB) scenario is emplyed, in which a fast, tenuous wind from a Blue Supergiant expands into a slow, dense wind, expelled during an earlier Red Supergiant phase. The bipolar shapre develops due to a pole-to-equator density contrast in the slow wind (ie, the slow wind forms a slow torus). We use the Wind Compressed Disk (WCD) model of Bjorkman & Cassinelli (1992) to determine the shape of the slow torus. In the WCD scenario, the shape of the torus is determined by the rotation of the progenitor star. We then use a self-similar semi-analytical method for wind blown bubble evolution to determine the shape of the resulting bipolar nebula. We find that the union of the wind-compressed-disk and bipolar-wind-blown- bubble models allows us to recover the salient properties of SN1987A's circumstellar nebula. In particular, the size, speed and density of SN1987A's inner ring are easily reproduced in our calculations. An exploration of parameter space shows the the red supergiant progenitor must be been rotating at > 0.3 of its breakup speed. We conclude that the progenitor was most likely spun up by a merger with a binary companion. Using a simple model for the binary merger we find that the companion is likely to have had a mass > 0.5 M_sun.
description: 30 pages, 4 figures
Nonuniqueness of conformal metrics with constant $Q$-curvature
Creators: name: Bettiol, Renato G.
name: Piccione, Paolo
name: Sire, Yannick
Publisher: name: arXiv
Year: 2018
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 53A30, 53C21, 58J55, 58E11, 35J91

description: We establish several nonuniqueness results for the problem of finding complete conformal metrics with constant (fourth-order) $Q$-curvature on compact and noncompact manifolds of dimension $\geq5$. Infinitely many branches of metrics with constant $Q$-curvature, but without constant scalar curvature, are found to bifurcate from Berger metrics on spheres and complex projective spaces. These provide examples of nonisometric metrics with the same constant negative $Q$-curvature in a conformal class with negative Yamabe invariant, echoing the absence of a Maximum Principle. We also discover infinitely many complete metrics with constant $Q$-curvature conformal to $\mathbb S^m\times\mathbb R^d$, $m\geq4$, $d\geq1$, and $\mathbb S^m\times\mathbb H^d$, $2\leq d\leq m-3$; which give infinitely many solutions to the singular constant $Q$-curvature problem on round spheres $\mathbb S^n$ blowing up along a round subsphere $\mathbb S^k$, for all $0\leq k
description: LaTeX2e, 19 pages, final (revised) version. To appear in Int. Math. Res. Not. IMRN
Crotophaga Linnaeus, 1758, gen. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Cuculiformes
Cuculidae
Crotophaga

description: Crotophaga [gen. nov.]
Rostrum compressum, semiovatum, arcuatum, sulco utrinque exaratum; Mandibula superiore margine utrinque angulata.
Nares perviae.
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 105, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Advection-Dominated Models of Luminous Accreting Black Holes
Creators: name: Narayan, Ramesh
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It has been found that a class of optically-thin two-temperature advection-dominated accretion solutions explains many observations of low-luminosity accreting black holes. Here it is shown that these models give a satisfactory description also of higher luminosity systems, provided the viscosity parameter $α$ is large. The models reproduce the spectra of black hole X-ray binaries in the Low State, and explain the transition from the Low State to the High State at a critical mass accretion rate. The models also show that the X-ray/$γ$-ray spectra of X-ray binaries and active galactic nuclei should be similar, as confirmed by observations.
description: 12 pages compressed uuencoded postscript, including 2 figures. To appear in Part 1 of The Astrophysical Journal
Development of an implicit framework for the two-fluid model on unstructured grids
Creators: name: Bartholomew, Paul Thomas
Publisher: name: Imperial College London
Year: 2017

description: The two-fluid model is an efficient method for simulating multiphase flows, based on an averaged description of the phases as interpenetrating and interacting continua. It is particularly attractive for the simulation of dispersed gas-solid flows in which the large number of particles in practical devices can impose an insurmountable computational burden for particle tracking methods, given currently available computing resources. Whilst the two-fluid model is more efficient than particle tracking methods, it results in large, strongly coupled and highly non-linear systems of equations, placing a premium on efficient solution algorithms. Additionally, the constitutive models used to describe the solid phase introduce stiff source terms, requiring a robust solution algorithm to handle them. In this thesis a fully-coupled algorithm is developed for the two-fluid model, based on a Newton linearisation of the underlying equation system, resulting in an algorithm treating all inter-equation couplings implicitly. For comparison, a semi-coupled algorithm, based on a Picard linearisation of the two-fluid model is also implemented, yielding a smaller implicitly coupled pressure-velocity system and a segregated system for the transport of phase concentrations. Motivating this work is the highly non-linear nature of the two-fluid model and the stiff source terms arising in the models of the dispersed phase, these are treated explicitly in the semi-coupled algorithm and may impose stability limits on the algorithm. By treating these terms implicitly, it is expected that the fully-coupled solution algorithm will be more robust. The algorithms are compared by application to test cases ranging from academic problems to problems representative of industrial applications of the two-fluid model. These comparisons show that with increasing problem complexity, the robustness of the fully-coupled algorithm leads to an overall more efficient solution than the semi-coupled algorithm.
Cosmic Error and the Statistics of Large Scale Structure
Creators: name: Szapudi, István
name: Colombi, Stéphane
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We examine the errors on counts in cells extracted from galaxy surveys. The measurement error, related to the finite number of sampling cells, is disentangled from the ``cosmic error'', due to the finiteness of the survey. Using the hierarchical model and assuming locally Poisson behavior, we identified three contributions to the cosmic error: The finite volume effect is proportional to the average of the two-point correlation function over the whole survey. It accounts for possible fluctuations of the density field at scales larger than the sample size. The edge effect is related to the geometry of the survey. It accounts for the fact that objects near the boundary carry less statistical weight than those further away from it. The discreteness effect is due to the fact that the underlying smooth random field is sampled with finite number of objects. This is the ``shot noise'' error. Measurements of errors in artificial hierarchical samples showed excellent agreement with our predictions. The probability distribution of errors is increasingly skewed when the order $N$ and/or the cell size increases. The Gaussian approximation is valid only in the weakly non-linear regime, otherwise it severely underestimates the true errors. We study the concept of ``number of statistically independent cells'' This number is found to depend highly on the statistical object under study and is generally quite different from the number of cells needed to cover the survey volume. In light of these findings, we advocate high oversampling for measurements of counts in cells.
description: 28 pages, ps with figures included, except figure 5, which is available at http://fnas08.fnal.gov/Publications
Topological insulator nanoparticles and their photonic analogues
Creators: name: Siroki, Gleb
Publisher: name: Imperial College London
Year: 2018

description: The exploration of topological insulators has been a remarkable success of band theory. Topological insulators are distinguished from ordinary ones by the boundary states which exist at the edge of those materials and are robust against disorder. Moreover, for these states the propagation direction depends on the spin in the absence of time-reversal breaking. This makes topological insulators promising candidates for spintronics as well as some optical applications. Because the their unique properties from single-particle band structure the analogous topological phases also exist for photons. Photonic crystals displaying topological properties promise to deliver waveguides where light can be guided without scattering and its direction { controlled by polarization. Following the drive for miniaturization one would like to make use of the described effects at the smallest scale possible. This conserves energy as well as materials and serves as the main motivation for the current work. The properties of boundary states have been largely explored in infinite (macroscopic) samples but not in finite ones. In the first half of this thesis we study quantum-confined topological nanoparticles. In particular, we use the tight-binding method to show that discrete surface states in the nanoparticles have the same protection from disorder as continuous bands in macroscopic samples. In addition, we analytically show that the surface states strongly affect the optical properties of such nanoparticles compared with those made from ordinary insulators. The second part of this thesis is devoted to topological photonics. Here we show both analytically and with numerical simulations that confined samples of photonic topological insulators have edge states supporting unidirectional propagation. Furthermore, we explore two designs - a 3D crystal and a 2D metasurface, which display topological properties and have not received any attention in the literature so far.
Bootstrap-adjusted quasi-likelihood information criteria for mixed model selection
Creators: name: Ge, Wentao
name: Shang, Junfeng
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Evolutionary Biology
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: We propose two model selection criteria relying on the bootstrap approach, denoted by QAICb1 and QAICb2, in the framework of linear mixed models. Similar to the justification of Akaike Information Criterion (AIC), the proposed QAICb1 and QAICb2 are proved as asymptotically unbiased estimators of the Kullback–Leibler discrepancy between a candidate model and the true model. However, they are defined on the quasi-likelihood function instead of the likelihood and are proven to be asymptotically equivalent. The proposed selection criteria are constructed by the quasi-likelihood of a candidate model and a bias estimation term in which the bootstrap method is adopted to improve the estimation for the bias caused by using the candidate model to estimate the true model. The simulations across a variety of mixed model settings are conducted to demonstrate that the proposed selection criteria outperform some other existing model selection criteria in selecting the true model. Generalized estimating equations (GEE) are utilized to calculate QAICb1 and QAICb2 in the simulations. The effectiveness of the proposed selection criteria is also demonstrated in an application of Parkinson's Progression Markers Initiative (PPMI) data.
title: ADCO, Grènetier de Cîteaux : comptes (1497-1504) (11 H 1172), f. 00209
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: comptes
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

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. 00209, 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
Bayesian parameter constraints for neutron star masses and radii using X-ray timing observations of accretion-powered millisecond pulsars
Creators: name: Salmi, T.
name: Nättilä, J.
name: Poutanen, J.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a Bayesian method to constrain the masses and radii of neutron stars (NSs) using the information encoded in the X-ray pulse profiles of accreting millisecond pulsars. We model the shape of the pulses using "oblate Schwarzschild" approximation, which takes into account the deformed shape of the star together with the special and general relativistic corrections to the photon trajectories and angles. The spectrum of the radiation is obtained from an empirical model of Comptonization in a hot slab in which a fraction of seed blackbody photons is scattered into a power-law component. By using an affine-invariant Markov chain Monte Carlo ensemble sampling method, we obtain posterior probability distributions for the different model parameters, especially for the mass and the radius. To test the robustness of our method, we first analyzed self-generated synthetic data with known model parameters. Similar analysis was then applied for the observations of SAX J1808.4-3658 by the Rossi X-ray Timing Explorer (RXTE). The results show that our method can reproduce the model parameters of the synthetic data, and that accurate constraints for the radius can be obtained using the RXTE pulse profile observations if the mass is a priori known. For a mass in the range 1.5-1.8 Msun, the radius of the NS in SAX J1808.4-3658 is constrained between 9 and 13 km. If the mass is accurately known, the radius can be determined with an accuracy of 5% (68% credibility). For example, for the mass of 1.7 Msun the equatorial radius is Req = 11.9+0.5 -0.4 km. Finally, we show that further improvements can be obtained when the X-ray polarization data from the Imaging X-ray Polarimeter Explorer will become available.
description: 16 pages, 9 figures, published in A&A
The GigaMIDI Dataset with Features for Expressive Music Performance Detection
Creators: name: Lee, Keon Ju Maverick
name: Ens, Jeff
name: Adkins, Sara
name: Sarmento, Pedro
name: Barthet, Mathieu
name: Pasquier, Philippe
Publisher: name: arXiv
Year: 2025
Subjects: subject: Sound (cs.SD)
subject: Artificial Intelligence (cs.AI)
subject: Digital Libraries (cs.DL)
subject: Information Retrieval (cs.IR)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The Musical Instrument Digital Interface (MIDI), introduced in 1983, revolutionized music production by allowing computers and instruments to communicate efficiently. MIDI files encode musical instructions compactly, facilitating convenient music sharing. They benefit Music Information Retrieval (MIR), aiding in research on music understanding, computational musicology, and generative music. The GigaMIDI dataset contains over 1.4 million unique MIDI files, encompassing 1.8 billion MIDI note events and over 5.3 million MIDI tracks. GigaMIDI is currently the largest collection of symbolic music in MIDI format available for research purposes under fair dealing. Distinguishing between non-expressive and expressive MIDI tracks is challenging, as MIDI files do not inherently make this distinction. To address this issue, we introduce a set of innovative heuristics for detecting expressive music performance. These include the Distinctive Note Velocity Ratio (DNVR) heuristic, which analyzes MIDI note velocity; the Distinctive Note Onset Deviation Ratio (DNODR) heuristic, which examines deviations in note onset times; and the Note Onset Median Metric Level (NOMML) heuristic, which evaluates onset positions relative to metric levels. Our evaluation demonstrates these heuristics effectively differentiate between non-expressive and expressive MIDI tracks. Furthermore, after evaluation, we create the most substantial expressive MIDI dataset, employing our heuristic, NOMML. This curated iteration of GigaMIDI encompasses expressively-performed instrument tracks detected by NOMML, containing all General MIDI instruments, constituting 31% of the GigaMIDI dataset, totalling 1,655,649 tracks.
description: Published at Transactions of the International Society for Music Information Retrieval (TISMIR), 8(1), 1-19
A model for bimodal rates and proportions
Creators: name: Vila, Roberto
name: Alfaia, Lucas
name: Menezes, André F.B.
name: Çankaya, Mehmet N.
name: Bourguignon, Marcelo
Publisher: name: Taylor & Francis
Year: 2022
Subjects: Biotechnology
Environmental Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Information Systems not elsewhere classified
Mathematical Sciences not elsewhere classified

description: The beta model is the most important distribution for fitting data with the unit interval. However, the beta distribution is not suitable to model bimodal unit interval data. In this paper, we propose a bimodal beta distribution constructed by using an approach based on the alpha-skew-normal model. We discuss several properties of this distribution, such as bimodality, real moments, entropies and identifiability. Furthermore, we propose a new regression model based on the proposed model and discuss residuals. Estimation is performed by maximum likelihood. A Monte Carlo experiment is conducted to evaluate the performances of these estimators in finite samples with a discussion of the results. An application is provided to show the modelling competence of the proposed distribution when the data sets show bimodality.
Analysis of the Polarization and Flux Spectra of SN1993J
Creators: name: Hoeflich, P.
name: Wheeler, J. C.
name: Hines, D. C.
name: Trammell, S. R.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Synthetic polarization and flux spectra are presented for aspherical, electron scattering-dominated photospheres of Type II supernovae (SN II) in general and the specific case of SN 1993J using a Monte Carlo scheme. The observed luminosity of a Type II supernova depends on the unknown inclination angle. Spectral analysis alone will fail to detect even strong deviations from spherical symmetry. Line scattering depolarizes incident polarized light, but the residual intrinsic polarization does not completely vanish because of electron scattering effects that depend on the electron density distribution. By combining results on the polarization and velocity structure of the emission lines, and the degree of polarization in the continuum, we place strong constraints on the degree of asphericity, the inclination of the system and the electron density distribution. Both the flux spectra and the percentage of polarization as a function of wavelength can be reproduced by an aspherical model with an axis ratio of 0.6, radial electron densities proportional to r**-5 and an effective temperature of 4800 K. In an oblate model, SN1993J is seen almost equator on. The line forming region is still within the hydrogen rich part of the envelope after 3 weeks, although the continuum may form in deeper layers. Although the residual polarization across Halpha is not zero, the interstellar component derived herein is consistent with that deduced by Trammell et al.(1993). The power of this technique for investigating the structure of other SN II, as a method for independently deriving the interstellar polarization, and the implications of these results on the use of SN II to determine distances through the Baade- Wesselink method are discussed.
description: 36 pages, 12 figures, macros 'aaspp.sty'.For a postscript version with high resolution figures, send E-Mail to pah@cfa141.harvard.edu; To appear in "The Astrophysical Journal"
Clustering regions with dynamic time warping to model obesity prevalence disparities in the United States
Creators: name: Vorpe, Katherine
name: Hessinger, Sierra
name: Poth, Rebekah
name: Miljkovic, Tatjana
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Computational Biology

description: Current methods for clustering adult obesity prevalence by state focus on creating a single map of obesity prevalence for a given year in the United States. Comparing these maps for different years may limit our understanding of the progression of state and regional obesity prevalence over time for the purpose of developing targeted regional health policies. In this application note, we adopt the non-parametric Dynamic Time Warping method for clustering longitudinal time series of obesity prevalence by state. This method captures the lead and lag relationship between the time series as part of the temporal alignment, allowing us to produce a single map that captures the regional and temporal clusters of obesity prevalence from 1990 to 2019 in the United States. We identify six regions of obesity prevalence in the United States and forecast future estimates of obesity prevalence based on ARIMA models.