cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Poisson equation and weak approximation for Metropolis-Hastings chains
Creators: name: Vogrinc, Jure
Publisher: name: Imperial College London
Year: 2017

description: The work presented investigates speeding up MCMC methods by introducing control variates based on approximate solutions of the Poisson equation. In the setting of Metropolis-Hastings chains in Rd two scalable approaches of approximately solving the Poisson equation are discussed. In both cases an underlying weakly convergent sequence of related Markov chains, enumerated by a scaling parameter, is identi ed and results, asymptotic in the scaling parameter, are given for the achieved improvement. In the rst approach control variates are constructed according to a sequence of ner and ner partitions of the state-space of the Metropolis-Hastings chain, with the mesh of the partition serving as the scaling parameter. In this context it is shown, that as the mesh reduces arbitrarily, so does the asymptotic variance in the Central limit theorem associated with the control variate given by the partition. The second approach assumes a target density of a product type and scales the dimension of the state-space and the variance of the proposal simultaneously. The resulting weakly convergent sequence converges to a Langevin di usion, which is then used to construct control variates for the Metropolis-Hastings chains in the sequence. The bounds obtained in this context suggest the improvement achieved by this approach grows almost linearly in dimension.
Embeddings of Quadratic Spaces
Creators: name: Chintala, Vineeth
Publisher: name: arXiv
Year: 2018
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 15A66, 15A63, 16W10

description: We introduce a concept of an embedding of a quadratic space in an associative algebra. The general properties of such embeddings are analyzed by linking it to the Clifford algebra. Conversely, there isa simple description of the standard involution and the Spin groups in terms of the algebra in which the quadratic space is embedded. Though Clifford Algebras have been studied in detail, they may not always be easy to work with. Sometimes it may be useful to switch to a more concrete embedding to study low dimensional Spin and Epin (or Elementary Spin) groups.
description: 14 pages, final version, filled a gap in the paper. Removed a section on Composition algebras - which hopefully will be part of future work
Genus of The Hypercube Graph And Real Moment-Angle Complexes
Creators: name: Das, Shouman
Publisher: name: arXiv
Year: 2018
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 05C10, 57M15

description: In this paper we demonstrate a calculation to find the genus of the hypercube graph $Q_n$ using real moment-angle complex $\mathcal{Z}_\mathcal{K}(D^1,S^0)$ where $\mathcal{K}$ is the boundary of an $n$-gon. We also calculate an upper bound for the genus of the quotient graph $Q_n/C_n$, where $C_n$ represents the cyclic group with $n$ elements.
description: 14 pages, 3 figures
Colymbus Linnaeus, 1758, gen. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Podicipediformes
Podicipedidae
Colymbus

description: Colymbus [gen. nov.]
Rostrum edentulum, subulatum, rectum, acuminatum.
Pedes pone aequilibrium.
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 135, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
The MACHO Project: 45 Candidate Microlensing Events from the First Year Galactic Bulge Data
Creators: name: Alcock, C.
name: Allsman, R. A.
name: Axelrod, T. S.
name: Bennett, D. P.
name: Cook, K. H.
name: Freeman, K. C.
name: Griest, K.
name: Guern, J.
name: Lehner, M. J.
name: Marshall, S. L.
name: Park, H. -S.
name: Perlmutter, S.
name: Peterson, B. A.
name: Pratt, M. R.
name: Quinn, P. J.
name: Rodgers, A. W.
name: Stubbs, C. W.
name: Sutherland, W.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the detection of 45 candidate microlensing events in fields toward the Galactic bulge. These come from the analysis of 24 fields containing 12.6 million stars observed for 190 days in 1993. Many of these events are of extremely high signal to noise and are remarkable examples of gravitational microlensing. The distribution of peak magnifications is shown to be consistent with the microlensing interpretation of these events. Using a sub-sample of 1.3 million ``Clump Giant" stars whose distance and detection efficiency are well known, we find 13 events and estimate the microlensing optical depth toward the Galactic Bulge as $τ_{\rm bulge} = 3.9 {+ 1.8 \atop - 1.2} \times 10^{-6}$ averaged over an area of $\sim 12$ square degrees centered at Galactic coordinates $\ell = 2.55^\circ$ and $b = -3.64^\circ$. This is similar to the value reported by the OGLE collaboration, and is marginally higher than current theoretical models for $τ_{\rm bulge}$. The optical depth is also seen to increase significantly for decreasing $\vert b\vert$. These results demonstrate that obtaining large numbers of microlensing events toward the Galactic bulge is feasible, and that the study of such events will have important consequences for the structure of the Galaxy and its dark halo.
description: 31 pages, 11 figures, 2 tables; Tex file plus figures and tables in uuencoded, compressed, tared postscript files (Event lightcurves are included, but bitmapped at 100 dpi). Entire paper is available via anonymous ftp at ftp://igpp.llnl.gov/pub/macho/Bulge2/bulge2_all.uu, submitted to Astrophys. J
Colymbus arcticus Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Podicipediformes
Podicipedidae
Colymbus
Colymbus arcticus

description: Colymbus arcticus [spec. nov.]
C. pedibus palmatis indivisis, gutture nigro-purpurascen- te. Fn. svec. 121. It. gotl. 341.
Colymbus arcticus Lumme. Worm. mus. 304. t. 305. Will. orn. 259. t. 62. Raj. av. 125. Oelig. mus. 1. s. 11. t. 1. f. 2.
Mergus maximus ferroensis s. arcticus. Clus. exot. 102.
Colymbus collo rubro. Edw. av. 97. t. 97. & 146. t. 140.
Habitat in Europa & America boreali; lacustris.
Mas sub gula purpurascens, Femina vero nigra; monogama; ova 2. in littore; nequit incedere; feris exosa; clamitando tempestates praesagit; migrat in proximam Germaniam.
Confr. Colymbus maximus caudatus. Alb. av. 1. p. 78. t. 82. Raj. av. 125. n. 4. Will. orn. 258. t. 62. f. 1. femina.
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 135, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Integrated InP-based transmitter for Continuous-Variable Quantum Key Distribution
Creators: name: Aldama, Jennifer
name: Sarmiento, Samael
name: Vidarte, Luis Trigo
name: Etcheverry, Sebastian
name: Grande, Ignacio López
name: Castelvero, Lorenzo
name: Hinojosa, Alberto
name: Beckerwerth, Tobias
name: Piétri, Yoann
name: Rhouni, Amine
name: Diamanti, Eleni
name: Pruneri, Valerio
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Developing quantum key distribution (QKD) systems using monolithic photonic integrated circuits (PICs) can accelerate their adoption by a wide range of markets, thanks to the potential reduction in size, complexity of the overall system, power consumption, and production cost. In this work, we design, fabricate and characterize an InP-based PIC transmitter for continuous-variable (CV) QKD applications. In a proof-of-principle experiment implementing a pulsed Gaussian-modulated coherent state (GMCS) CV-QKD protocol over an optical fiber channel of 11 km, the system showed a performance compatible with a secret key rate of 78 kbps in the asymptotic regime. These results show the potential of InP technologies to integrate CV-QKD systems onto a monolithic platform.
description: 14 pages, 7 figures
Thermodynamic Theory of Linear Optical and Electro-Optic Properties of Ferroelectrics
Creators: name: Ross, Aiden
name: Ali, Mohamed S. M. M.
name: Saha, Akash
name: Zu, Rui
name: Gopalan, Venkatraman
name: Dabo, Ismaila
name: Chen, Long-Qing
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ferroelectric materials underlie key optical technologies in optical communications, integrated optics and quantum computing. Yet, there is a lack of a consistent thermodynamic framework to predict the optical properties of ferroelectrics and the mutual connections among ferroelectric polarization, optical properties, and optical dispersion. For example, there is no existing thermodynamic model for establishing the relationship between the ferroelectric polarization and the optical properties in the visible spectrum. Here we present a thermodynamic theory of the linear optical and electro-optic properties of ferroelectrics by separating the lattice and electronic contributions to the total polarization. We introduce a biquadratic coupling between the lattice and electronic contributions validated by both first-principles calculations and experimental measurements. As an example, we derive the temperature and wavelength-dependent anisotropic optical properties of BaTiO3, including the full linear optical dielectric tensor and the linear electro-optic (Pockels) effect through multiple ferroelectric phase transitions, which are in excellent agreement with existing experimental data and first principles calculations. This general framework incorporates essentially all optical properties of materials, including coupling between the ionic and electronic order parameters, as well as their dispersion and temperature dependence, and thus offers a powerful theoretical tool for analyzing light-matter interactions in ferroelectrics-based optical devices.
description: 29 pages, 8 figures
Human helper T cell responses to RSV infection
Creators: name: Guvenel, Aleks Kamer
Publisher: name: Imperial College London
Year: 2016

description: Respiratory Syncytial virus (RSV) remains one of the most important causes of severe respiratory infection worldwide. Natural immunity is only partially protective, and no safe and effective vaccine has so far been found. CD4+ T cells play an essential role in shaping cellular and humoral immune responses. They have been shown to provide signals that are necessary for full differentiation of CD8+ T cells and B cells, as well as exhibiting direct anti-viral functions. However, their role in human RSV infection is poorly understood. Among the reasons for this are restrictions on sampling during the course of human infection and a resultant lack of tools to allow the study of antigen-specific CD4+ T cell responses. Further understanding of their role in the generation of effective immunity is essential for the development of better vaccines. Using an established experimental human challenge model, we inoculated 49 healthy adult volunteers with live, virulent RSV (Memphis 37). We analysed viral load by quantitative PCR (qPCR) on nasal lavage samples. Subjects were deemed infected if RSV was detectable on two consecutive days between day 2 and day 10 post inoculation. RSV infection developed in 26/49 (53%) of volunteers. In those infected, viral load peaked at day 7 and occurred at the same time as the peak symptoms score. Analysis of peripheral blood mononuclear cells (PBMCs) and BAL cells revealed the peak of polyclonal CD4+ T cell responses at day 10, characterised by the expression of the activation marker CD38 and proliferation marker Ki-67. At this time-point, RSV-specific CD4+ T cells were producing Th1 cytokines IFN- and TNF- To understand this response in greater detail, we generated a custom RSV M37 peptide library covering the complete RSV proteome. Using IFN- ELISpot, candidate epitopes were found in the F, G, M and N proteins. Of these, the most immunodominant CD4+ T cell epitopes were within the major surface glycoproteins F and G. Their class II restriction was established by depletion of CD8+ T cells from PBMCs and were confirmed by functional analysis of PBMCs from HLA class II matched donors. Using these, MHC class II-peptide tetramers using F and G peptides were constructed for the first time. RSV-specific CD4+ T cells were detectable in PBMCs of infected subjects at day 10, and exhibited the phenotypic markers of effector and effector memory T cells. These were highly activated but showed less evidence of proliferation than RSV-specific CD8+ T cells generated at the same time. Thus, the T cell response to RSV in healthy adults displays broad specificity but immunodominant CD4+ T cells primarily recognize peptides from the surface proteins F and G. Our studies imply the importance of Th1 and follicular helper T cells in the response to infection and provide novel tools that will allow further characterisation of RSV-specific CD4+ T cells in peripheral blood and lower airway.
title: ADCO, Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VIII, Cart. 192 (11 H 77), 295 folios, f. 0229v
Creators: name: de la Côte-d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VIII, Archives départementales de la Côte-d'Or, Cart. 192 (11 H 77), 295 folios, f. 0229v, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VIII, Archives départementales de la Côte-d'Or, Cart. 192 (11 H 77), 295 folios, f. 0229v, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
On the Cosmological Evolution of the Luminosity Function and the Accretion Rate of Quasars
Creators: name: Haiman, Zoltan
name: Menou, Kristen
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We consider a class of models for the redshift evolution (between $0\lsim z \lsim 4$) of the observed optical and X-ray quasar luminosity functions (LFs), with the following assumptions: (i) the mass-function of dark matter halos follows the Press-Schechter theory, (ii) the black hole (BH) mass scales linearly with the halo mass, (iii) quasars have a constant universal lifetime, and (iv) a thin accretion disk provides the optical luminosity of quasars, while the X-ray/optical flux ratio is calibrated from a sample of observed quasars. The mass accretion rate $\dot{M}$ onto quasar BHs is a free parameter of the models, that we constrain using the observed LFs. The accretion rate $\dot M$ inferred from either the optical or X-ray data under these assumptions generally decreases as a function of cosmic time from $z \simeq 4$ to $z \simeq 0$. We find that a comparable accretion rate is inferred from the X-ray and optical LF only if the X-ray/optical flux ratio decreases with BH mass. Near $z\simeq 0$, $\dot M$ drops to substantially sub-Eddington values at which advection-dominated accretion flows (ADAFs) exist. Such a decline of $\dot M$, possibly followed by a transition to radiatively inefficient ADAFs, could explain both the absence of bright quasars in the local universe and the faintness of accreting BHs at the centers of nearby galaxies. We argue that a decline of the accretion rate of the quasar population is indeed expected in cosmological structure formation models.
description: Latex, 23 pages, 9 figures, accepted for publication in ApJ
Ontology Matching Framework
Creators: name: Martinez-Gil, Jorge
Publisher: name: figshare
Year: 2018
Subjects: subject: 80604 Database Management
subject: FOS: Computer and information sciences
subject: 80605 Decision Support and Group Support Systems
subject: 80105 Expert Systems
subject: 80606 Global Information Systems
subject: Information Systems

description: In this work, we present our experience when developing the Matching Framework (MaF), a framework for matching ontologies that allows users to configure their own ontology matching algorithms and it allows developers to perform research on new complex algorithms. MaF provides numerical results instead of logic results provided by other kinds of algorithms. The framework can be configured by selecting the simple algorithms which will be used from a set of 136 basic algorithms, indicating exactly how many and how these algorithms will be composed and selecting the thresholds for retrieving the most promising mappings. Output results are provided in a standard format so that they can be used in many existing tools (evaluators, mediators, viewers, and so on) which follow this standard. The main goal of our work is not to better the existing solutions for ontology matching, but to help research new ways of combining algorithms in order to meet specific needs. In fact, the system can test more than 6 · 136! possible combinations of algorithms, but the graphical interface is designed to simplify the matching process.
The effects of hope and anxiety in driving consumer intentions to adopt new product solutions
Creators: name: Lin, Yu-Ting
Publisher: name: Imperial College London
Year: 2018

description: New products are often associated with uncertainty. On the one hand consumers may hope that innovative offerings will produce goal-congruent outcomes, while on the other hand, they may be anxious about the possibility that the product will result in goal-incongruent ones. In four studies, I demonstrate the intriguing finding that anxiety about a new product boosts (rather than reduces) the positive effect of hope on adoption intentions. This effect is observed when using different populations of consumers from around the globe, when using products and services, and in contexts that involve different types of consumption goals – i.e., functional, aesthetic, experiential and social goals. I test defensive pessimism and confidence in achieving goal-congruent outcomes as a serial mediation process explaining this effect. The proposed mechanism remains significant, even after accounting for alternative explanations including pain/gain inferences and motivated reasoning. This thesis highlights the crucial role of hope and anxiety in driving consumer intentions to adopt new product solutions and offers important insights that may have implications for both research and practice.
Renormalization of Lagrangian bias via spectral parameters
Creators: name: Aviles, Alejandro
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We extend the definition of Lagrangian local bias proposed by Matsubara (2008) to include curvature and higher-derivative bias operators. Evolution of initially biased tracers using perturbation theory (PT) generates multivariate bias parameters as soon as nonlinear fluctuations become important. We present a procedure that reparametrize a set of spectral parameters, the arguments of the Fourier transformed Lagrangian bias function, from which multivariate renormalized biases can be derived at any order in bias expansion and PT. We find our method simpler than previous renormalization schemes because it only relies on the definition of bias, fixed from the beginning, and in one equation relating renormalized and unrenormalized spectral parameters. We also show that our multivariate biases can be obtained within the peak background split framework, in that sense this work extends that of Schmidt, Jeong and Desjacques (2013); however, we restrict our method to Gaussian initial conditions. Non-linear evolution also leads to the appearance of products of correlators evaluated at the same point, commonly named contact terms, yielding divergent contributions to the power spectrum, in this work we present an explicit method to remove these divergences by introducing stochastic fields.
description: 15 pages, 1 figure. v2: Typos corrected to match the published version
Velocity Field Statistics in Star-Forming Regions. I. Centroid Velocity Observations
Creators: name: Miesch, M. S.
name: Scalo, J. M.
name: Bally, J.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The probability density functions (pdfs) of molecular line centroid velocity fluctuations and fluctuation differences at different spatial lags are estimated for several nearby molecular clouds with active internal star formation. The data consist of over 75,000 $^{13}$CO line profiles divided among twelve spatially and/or kinematically distinct regions. Although three regions (all in Mon R2) appear nearly Gaussian, the others show strong evidence for non-Gaussian, often nearly exponential, centroid velocity pdfs, possibly with power law contributions in the far tails. Evidence for nearly exponential centroid pdfs in the neutral HI component of the ISM is also presented, based on older optical and radio observations. These results are in contrast to pdfs found in isotropic incompressible turbulence experiments and simulations. Furthermore, no evidence is found for the scaling of difference pdf kurtosis with Reynolds number which is seen in incompressible turbulence, and the spatial distribution of high-amplitude velocity differences shows little indication of the filamentary appearance predicted by decay simulations dominated by vortical interactions. The variation with lag of the difference pdf moments is presented as a constraint on future simulations.
description: LaTeX, 23 pages, with 15 Figures included separately as gif image files. Refereed/revised version accepted to the Astrophysical Journal. A complete (but much larger) postscript version is available from http://ktaadn.gsfc.nasa.gov/~miesch
Error scaling of large-eddy simulation in the outer region of wall-bounded turbulence
Creators: name: Lozano-Durán, Adrián
name: Bae, Hyunji Jane
Publisher: name: arXiv
Year: 2018
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We study the error scaling properties of large-eddy simulation (LES) in the outer region of wall-bounded turbulence at moderately high Reynolds numbers. In order to avoid the additional complexity of wall-modeling, we perform LES of turbulent channel flows in which the no-slip condition at the wall is replaced by a Neumann condition supplying the exact mean wall-stress. The statistics investigated are the mean velocity profile, turbulence intensities, and kinetic energy spectra. The errors follow $(Δ/L)^αRe_τ^γ$, where $Δ$ is the characteristic grid resolution, $Re_τ$ is the friction Reynolds number, and $L$ is the meaningful length-scale to normalize $Δ$ in order to collapse the errors across the wall-normal distance. We show that $Δ$ can be expressed as the $L_2$-norm of the grid vector and that $L$ is well represented by the ratio of the friction velocity and mean shear. The exponent $α$ is estimated from theoretical arguments for each statistical quantity of interest and shown to roughly match the values computed by numerical simulations. For the mean profile and kinetic energy spectra, $α\approx1$, whereas the turbulence intensities converge at a slower rate $α<1$. The exponent $γ$ is approximately $0$, i.e. the LES solution is independent of the Reynolds number. The expected behavior of the turbulence intensities at high Reynolds numbers is also derived and shown to agree with the classic log-layer profiles for grid resolutions lying within the inertial range. Further examination of the LES turbulence intensities and spectra reveals that both quantities resemble their filtered counterparts from direct numerical simulation (DNS) data, but that the mechanism responsible for this similarity is related to the balance between the input power and dissipation rather than to filtering.
description: Improved clarity and typo correction
Local normal modes, lattice vibrations and phase transitions
Creators: name: Nasrollahi, Seyed Hossein
Publisher: name: Imperial College London
Year: 2018

description: In this thesis, we propose a simplified approach to the lattice dynamics of crystals by operating within the framework of local normal modes, i.e, the normal modes of the isolated unit cell. We do this by transforming the Cartesian coordinates into the normal modes of the unit cell by using group theoretic techniques. The dynamical matrix obtained with this method is different to the one obtained through standard methods, but has the same eigenvalues and eigenvectors. Using perturbation theory, we treat the off-diagonal elements as perturbations and proceed in calculating the phonon dispersions. In doing so, we obtain approximate analytical expressions and accurate numerical solutions to phonon dispersion without explicitly solving the eigenvalue problem. This method provides insight into the symmetry analysis of the phonon modes, and opens a pathway for studying phase transitions in molecular solids and Jahn-Teller systems. A Jahn-Teller molecule is one which is not stable and distorts to a lower-symmetry geometry due to the electronic degeneracy of the highest occupied molecular orbital. If several such Jahn-Teller molecules interact with each other, they can undergo a cooperative phase transition. We use our results of the local normal mode analysis to develop a model of cooperative Jahn-Teller phase transitions. We then apply our model to a system of interacting icosahedral Jahn-Teller clusters. Since atoms tend to form clusters of icosahedral symmetry in the amorphous and liquid phases, our results serve as a paradigm for liquid-solid and glass transitions. This is a new approach which has been taken in establishing a relationship between lattice dynamics, cooperative Jahn-Teller effect and certain types of phase transitions.
High-energy cLFV at $μ$TRISTAN: HNL extensions of the Standard Model
Creators: name: Kriewald, J.
name: Pinsard, E.
name: Teixeira, A. M.
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Within the context of heavy neutral lepton (HNL) extensions of the Standard Model, we compute the cross-sections for $μ^+ e^-\to \ell_α^+\ell_β^-$ scattering, as well as several angular observables. In particular, we investigate the future sensitivity of a $μ$TRISTAN collider in discovering such charged lepton flavour violating processes and the potential constraining power of these searches on the parameter space of HNL models. Our results show that while low-energy probes of $μ-e$ flavour violation do offer the most promising potential, the prospects for $eτ$ and $μτ$ flavour violation searches at $μ$TRISTAN can exceed those of related low-energy probes (as well as flavour violating $Z$-pole processes at FCC-ee) by several orders of magnitude.
description: 31 pages, 13 figures, v2: minor changes to the manuscript, numerics unchanged, matches version published in JHEP
CMB Anisotropy in COBE-DMR-Normalized Open CDM Cosmogony
Creators: name: Ratra, Bharat
name: Banday, Anthony J.
name: Gorski, Krzysztof M.
name: Sugiyama, Naoshi
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We compute the CMB anisotropy in an open inflation CDM model which is normalized to the two-year DMR sky map. Presently available CMB data is consistent with $Ω_0 \sim 0.3 - 0.4$, but does not strongly disfavour either $Ω_0 \sim 0.1$ or $Ω_0 \sim 1$. Accumulating CMB data should strengthen the observational discriminative power, however, a better understanding of systematic effects will be needed before it will be possible to draw robust conclusions about model viability.
description: 9 pages including 2 figures, one table: two uuencoded postscript files
Asymptotic structure of three-dimensional Maxwell Chern-Simons gravity coupled to spin-3 fields
Creators: name: Concha, Patrick
name: Matulich, Javier
name: Pino, Daniel
name: Rodríguez, Evelyn
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work we analyze the asymptotic symmetries of the three-dimensional Chern-Simons (CS) gravity theory for a higher spin extension of the so-called Maxwell algebra. We propose a generalized set of asymptotic boundary conditions for the aforementioned flat gravity theory and we show that the corresponding charge algebra defines a higher-spin extension of the $\mathfrak{max}$-$\mathfrak{bms}_{3}$ algebra, which in turn corresponds the asymptotic symmetries of the Maxwell CS gravity. We also show that the $\mathfrak{hs}_3\mathfrak{max}$-$\mathfrak{bms}_{3}$ algebra can alternatively be obtained as a vanishing cosmological constant limit of three copies of the $\mathcal{W}_3$ algebra, with three independent central charges.
description: 19 pages
NLTE abundances of Eu for a sample of metal-poor stars in the Galactic Halo and Metal-poor Disk with 1D and <3D> models
Creators: name: Guo, Yanjun
name: Storm, Nicholas
name: Bergemann, Maria
name: Lian, Jianhui
name: Alexeeva, Sofya
name: Li, Yangyang
name: Ezzeddine, Rana
name: Gerber, Jeffrey
name: Chen, XueFei
Publisher: name: arXiv
Year: 2024
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Accurate measurements of europium abundances in cool stars are essential for an enhanced understanding of the r-process mechanisms. We measure the abundance of Eu in solar spectra and a sample of metal-poor stars in the Galactic halo and metal-poor disk, with the metallicities ranging from \GG{$-2.4$} to $-0.5$ dex, using non-local thermodynamic equilibrium (NLTE) line formation. We compare these measurements with Galactic Chemical Evolution (GCE) models to \GG{explore the impact of the NLTE corrections on the contribution of r-process site in Galactic chemical evolution. In this work, we use NLTE line formation, as well as one-dimensional (1D) hydrostatic and spatial averages of 3D hydrodynamical ($<$3D$>$) model atmospheres to measure the abundance of Eu based on both the Eu II 4129 Å and Eu II 6645 Å lines for solar spectra and metal-poor stars. We find that \GG{for Eu II 4129 Å line the NLTE modelling leads to higher (0.04 dex) solar Eu abundance in 1D and higher (0.07 dex) in \GG{$<$3D$>$} NLTE while} NLTE modelling leads to higher (0.01 dex) solar Eu abundance in 1D and lower (0.03 dex) in \GG{$<$3D$>$} NLTE for Eu II 6645 Å line. Although the NLTE corrections for the Eu II $λ$ 4129 Å and Eu II $λ$ 6645 Å lines are opposite, the discrepancy between the abundances derived from these individual lines reduces after applying NLTE corrections, highlighting the critical role of NLTE abundance determinations. By comparing these measurements with Galactic chemical evolution (GCE) models, we find that the \G{amount of NLTE correction does not require significant change of the parameters for Eu production} in the GCE models.
Disentangling centrality bias and final-state effects in the production of pi0 using direct photons in d+Au collisions at 200 GeV
Creators: name: Firak, Daniel
Publisher: name: Zenodo
Year: 2024
Subjects: wwnd24
phenix
d+au
photon
direct photon
π0
raa
nuclear
modification
centrality
multiplicity
small systems
p+al
p+au
3he+au
cnm effects

description: Talk presented at the Winter Workshop on Nuclear Dynamics, 2024 conference
Colymbus cristatus Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Podicipediformes
Podicipedidae
Colymbus
Colymbus cristatus

description: Colymbus cristatus [spec. nov.]
C. pedibus lobato-fissis, capite rufo, collari nigro, remigibus secundariis albis. Fn. svec. 122.
Colymbus major cristatus s. cornutus. Gesn. av. 139. Aldr. ornith. l. 19. c. 52. Will. orn. 257. t. 61. Raj. av. 124. Marsil. danub. 80. t. 38.
Habitat in Europa.
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 135, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Gamma Rays from Compact Objects
Creators: name: Mannheim, Karl
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A review on some recent developments in gamma ray astrophysics with particular emphasis on the role of relativistic bulk motion in nonthermal gamma ray sources, radiation processes in AGN jets, high-energy neutrino astronomy and the use of gamma rays in the energy range 10 GeV - 50 TeV as a probe of the diffuse IR-UV radiation field at cosmic distances.
description: 31 pages compressed and uuencoded postscript; Rev. Mod. Astr., Vol.9
VITIS VINIFERA (UZUM) O'SIMLIGIDAN BIOLOGIK FAOL QO'SHIMCHALAR TAYYORLASH, SERTIFIKATLASH VA ISHLAB CHIQARISH
Creators: name: Adikunduzov, Xikmatillo
Publisher: name: Zenodo
Year: 2024

description: Maqolada mahalliy uzum navlarining kimyoviy tarkini o‘rganish orqali ishlab chiqarilgan biologik faol qo‘shimcha haqida so‘z yuritiladi. Ushbu BFQ ni sertifikatlash va sinflash hamda  ishlatilish soxalari qisqacha yoritilgan.
Understanding edge angle variability and morpho-functional design of Late Middle Palaeolithic Keilmesser assemblages
Creators: name: TraCEr TraCEr
Publisher: name: figshare
Year: 2018
Subjects: Archaeology

description: Understanding edge angle variability and morpho-functional design of Late Middle Palaeolithic Keilmesser assemblages  The Late Middle Palaeolithic ‘Keilmessergruppen’ (KMG) assemblages of Central and Eastern Europe are characterised by asymmetrically backed tools. Most of these items are bifacially worked, produced in a highly standardised mode and display characteristic wedge-(‘Keil’)-shaped sections. Due to their single working edge these tools have been interpreted as knives. In Keilmesser, long reduction sequences have repeatedly been documented (Jöris 2006), allowing for detailed morpho-technological reconstructions of their use-life histories, including repetitive phases of production, usage, re-sharpening and re-use.   Due to the aforementioned characteristics, Keilmesser provide a unique archive for tracing certain features of late Neanderthal behaviour. These may range from understanding tool dedication, function and its underlying design and production concept, learning strategies, technical innovations, the transmission of ideas and knowledge to the formation of late Neanderthal regional traditions. At some KMG sites, Keilmesser frequently display the application of tranchet blows that sharpens the working edge at the tip of the tool through removing the lateral edge. The use of this method (within KMG contexts called ‘Prądnik method’) reflects intentional design and puts special emphasize on the edge angle near the tool-tip. This observation implies a certain hierarchization of different parts of the working edge within the same tools that might be related to its use-life. Various interpretations consider the application of this method as e.g. tool-finishing or as maintenance, sharpening or optimization of an existing working edge. Nevertheless, which effect it has remains so far speculative.   In order to address these aspects, here we apply a particular methodology, which includes - among others - 3D scanning to acquire the measurements and for morphometric analyses (Grosman et al. 2008). To obtain a more distinct picture of the working edge a sample of Keilmesser made of silicified schist is used as a case study. Our study aims at an improved understanding of how the working edge of a Keilmesser was actually designed and which effects specific edge angles might have had. Targeted objective and quantitative use-wear analyses (Marreiros et al. 2015) on the material will supplement this study.   By including controlled experiments, 3D morphometric data analysis as well as macro and micro use-wear analysis, this approach will provide new data that aim to test the given interpretations of these asymmetrically backed tools from the Late Middle Palaeolithic. Hence, this research will contribute to a more holistic understanding of the concepts underlying tool design, function and its realisation.
Gravitational Waves and Degrees of Freedom in Higher Derivative Gravity
Creators: name: Hölscher, Patric
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the degrees of freedom of the metric in a general class of higher derivative gravity models, which are interesting in the context of quantum gravity as they are (super)renormalizable. First, we linearize the theory for a flat background metric in Teyssandier gauge for an arbitrary number of spacetime dimensions $D$. The higher-order derivative field equations for the metric perturbation can be decomposed into tensorial and scalar field equations resembling massless and massive wave equations. For the massive tensor field in $D$-dimensions we demonstrate that the harmonic gauge condition is induced dynamically and only the transverse modes are excited in the presence of a matter source. For the special case of quadratic gravity in four-dimensional spacetime, we show that only the quadrupole moment contributes to the gravitational radiation from an idealized binary system.
description: v4: 8 pages, no figures; Uses REVTeX 4.1; improved notation and additional comments/clarifications; updated references
Simulating the properties of mixed oxide nuclear fuel
Creators: name: Galvin, Conor
Publisher: name: Imperial College London
Year: 2018

description: Computer simulations can predict the properties of materials that might be difficult to study experimentally. In particular, atomic-scale simulations continue to play a crucial role in understanding fundamental mechanisms governing the behaviour of nuclear fuel. Such simulations can inform the development of fuel performance codes, which are essential tools used by industry and the regulator. In this thesis, molecular dynamics simulations have been used to investigate the properties of mixed oxide nuclear fuels. Two main themes will be addressed: i) properties of mixed oxide fuel in the solid and liquid state and ii) the behaviour of fission gas in nuclear fuel. The significance of this work is that it provides improved understanding of fuel performance, develops predictions where experiments are particularly challenging/expensive, and provides information on compositions for which no irradiation data exist. The first part of the study was to investigate the thermophysical and ion transport properties of (ThPu)O2 by predicting the thermal expansion, specific heat capacity and oxygen diffusivity. This was extended by considering the accommodation of the burnable poison gadolinium as Gd3+ ions compensated by oxygen vacancies. Enhanced oxygen diffusivity was predicted for particular compositions, however, this enhancement is not seen with the introduction of Gd to the system (although the system oxygen diffusivity is higher overall). Building on the method for generating (ThPu)O2 structures, solid to liquid transitions were investigated for UO2, ThO2, PuO2 both as end members and as components in mixed oxides. Melting points were initially determined using a common moving interface method for (ThPu)O2. In addition, a new compositional moving interface method was used to identify the solidus and liquidus for (UTh)O2, (UPu)O2 and (ThPu)O2. The accommodation of gas species in fuel is performance limiting. While much work exists on gas in end-member oxides, molecular dynamic simulations bring valuable insight on gas behaviour mechanisms. Thus, the behaviour and transport of He in UO2 and how it was effected approaching dislocations and grain boundaries was also investigated. The results show a clear enhancement in He diffusivity at dislocations or grain boundaries. Gas can also accumulate and so Xe bubble pressures in UO2 were also examined and compared to experimental datasets to determine the discrepancy between equilibrium bubble pressures and bubble pressures in nuclear fuel. It was found that bubble pressures in nuclear fuel are over-pressurised in comparison to pressures given by the Young-Laplace relationship and that important terms such as surface stress should not be ignored when using the Young-Laplace relationship. This work lays the foundations for further simulations that need to be done to investigate it in mixed oxide fuel.
Same space – different perspectives: comparative analysis of geographic context through sketch maps and spatial video geonarratives
Creators: name: Curtis, Andrew
name: Curtis, Jacqueline W.
name: Jayakrishnan Ajayakumar
name: Jefferis, Eric
name: Mitchell, Susanne
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences

description: The importance of including a contextual underpinning to the spatial analysis of social data is gaining traction in the spatial science community. The challenge, though, is how to capture these data in a rigorous manner that is translational. One method that has shown promise in achieving this aim is the spatial video geonarrative (SVG), and in this paper we pose questions that advance the science of geonarratives through a case study of criminal ex-offenders. Eleven ex-offenders provided sketch maps and SVGs identifying high-crime areas of their community. Wordmapper software was used to map and classify the SVG content; its spatial filter extension was used for hot spot mapping with statistical significance tested using Monte Carlo simulations. Then, each subject’s sketch map and SVG were compared. Results reveal that SVGs consistently produce finer spatial-scale data and more locations of relevance than the sketch maps. SVGs also provide explanation of spatial-temporal processes and causal mechanisms linked to specific places, which are not evident in the sketch maps. SVG can be a rigorous translational method for collecting data on the geographic context of many phenomena. Therefore, this paper makes an important advance in understanding how environmentally immersive methods contribute to the understanding of geographic context.
Occasional uncoupling overcomes measure desynchronization
Creators: name: Ghosh, Anupam
name: Shah, Tirth
name: Chakraborty, Sagar
Publisher: name: arXiv
Year: 2018
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Owing to the absence of the phase space attractors in the Hamiltonian dynamical systems, the concept of the identical synchronization between the dissipative systems is inapplicable to the Hamiltonian systems for which, thus, one defines a related generalized phenomenon known as the measure synchronization. A coupled pair of Hamiltonian systems---the full coupled system also being Hamiltonian---can possibly be in two types of measure synchronized states: quasiperiodic and chaotic. In this paper, we take representative systems belonging to each such class of the coupled systems and highlight that, as the coupling strengths are varied, there may exist intervals in the ranges of the coupling parameters at which the systems are measure desynchronized. Subsequently, we illustrate that as a coupled system evolves in time, occasionally switching off the coupling when the system is in the measure desynchronized state can bring the system back in measure synchrony. Further, for the case of the occasional uncoupling being employed periodically and the corresponding time-period being small, we analytically find the values of the on-fraction of the time-period using which measure synchronization is effected on the corresponding desynchronized state.
description: 11 pages, 7 figure-panels
title: ADCO, Ordre cistercien et abbaye de Cîteaux : comptes pour l'ordre (1337-1347), comptes du boursier (1377-1402) (11 H 1160), f. 00453
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/2017
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: comptes
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Ordre cistercien et abbaye de Cîteaux : comptes pour l'ordre (1337-1347), comptes du boursier (1377-1402), Archives départementales de la Côte-d'Or, (11 H 1160). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Ordre cistercien et abbaye de Cîteaux : comptes pour l'ordre (1337-1347), comptes du boursier (1377-1402), Archives départementales de la Côte-d'Or, (11 H 1160), f. 00453, in Projet CBMA - Corpus Burgundiae Medii Aevi \[Ressource en ligne\], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
Reverse Ontology Matching
Creators: name: Martinez-Gil, Jorge
Publisher: name: figshare
Year: 2018
Subjects: subject: 80604 Database Management
subject: FOS: Computer and information sciences
subject: 80105 Expert Systems
subject: 80606 Global Information Systems
subject: Information Systems
subject: 80704 Information Retrieval and Web Search
subject: FOS: Media and communications
subject: 89999 Information and Computing Sciences not elsewhere classified

description: Ontology Matching aims to find the semantic correspondences between ontologies that belong to a single domain but that have been developed separately. However, there are still some problem areas to be solved, because experts are still needed to supervise the matching processes and an efficient way to reuse the alignments has not yet been found. We propose a novel technique named Reverse Ontology Matching, which aims to find the matching functions that were used in the original process. The use of these functions is very useful for aspects such as modeling behavior from experts, performing matching-by-example, reverse engineering existing ontology matching tools or compressing ontology alignment repositories. Moreover, the results obtained from a widely used benchmark dataset provide evidence of the effectiveness of this approach.