cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Liquid fuel spray atomisation, ignition and combustion dynamics
Creators: name: Gallot Lavallee, Simon
Publisher: name: Imperial College London
Year: 2017

description: Turbulent spray ames are increasingly found in industrial combustion devices due to greater demand for fuel exibility. However, a comprehensive model of the underlying physics involved into this is still lacking due to the great complexity of the problem. The importance of numerical studies in this context is related to the possible savings in experimental testing both in terms of time and resources. A detailed yet a ordable numerical tool is therefore required to the development of less polluting and more e cient devices. This work aims at the validation of existing models and developing methods focusing on the atomisation, evaporation, ignition, and combustion dynamics of spray fuelled burners. Here, extensive simulations are performed in the context of Large Eddy Simulation (LES) where the scalar elds are modelled using a transported pdf approach. The solution of the latter is obtained by means of the Eulerian stochastic eld method, a exible and comprehensive combustion model. The liquid phase is treated in a discrete Lagrangian fashion, where the sub-grid-scale uctuations from the LES are accounted for by the stochastic parcel method for dispersion, break-up and evaporation. Di erent atomisation and evaporation models of increasing complexity are tested and greater insight on the e ect of this choice is provided. This is achieved while exploring the applicability of the method to various state of the art techniques for pollutants reduction. Several test cases have been simulated: the Sandia constant volume chamber, the DELFT hot co- ow burner and two of the burners from CORIA laboratories. For all cases good reproduction of the aerodynamic elds as well as the qualitative ame shapes is acheived. Three evaporation model have been tested, and three break-up models used for the simulations and the e ects of this choice are explored in this work. The stochastic break-up model tested allows for reduced a priori assumption on the calculation providing results comparable with other methods. The Abramzon-Sirignano evaporation model appears to be a valid evaporation model to be employed in dilute spray LES calculations. Validation is achieved by comparing both gas and liquid phase properties with the available experimental data. An important dependency of the quality of the predictions on the choice of the chemical mechanism describing the oxidation process is observed. As a conclusion of the study, future directions are suggested together with some preliminary illustrative results.
Glassy nature of the hard phase in inference problems
Creators: name: Antenucci, Fabrizio
name: Franz, Silvio
name: Urbani, Pierfrancesco
name: Zdeborová, Lenka
Publisher: name: arXiv
Year: 2018
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Information Theory (cs.IT)
subject: Statistics Theory (math.ST)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: An algorithmically hard phase was described in a range of inference problems: even if the signal can be reconstructed with a small error from an information theoretic point of view, known algorithms fail unless the noise-to-signal ratio is sufficiently small. This hard phase is typically understood as a metastable branch of the dynamical evolution of message passing algorithms. In this work we study the metastable branch for a prototypical inference problem, the low-rank matrix factorization, that presents a hard phase. We show that for noise-to-signal ratios that are below the information theoretic threshold, the posterior measure is composed of an exponential number of metastable glassy states and we compute their entropy, called the complexity. We show that this glassiness extends even slightly below the algorithmic threshold below which the well-known approximate message passing (AMP) algorithm is able to closely reconstruct the signal. Counter-intuitively, we find that the performance of the AMP algorithm is not improved by taking into account the glassy nature of the hard phase. This result provides further evidence that the hard phase in inference problems is algorithmically impenetrable for some deep computational reasons that remain to be uncovered.
description: 10 pages, 3 figures
title: ADCO, Abbaye de Cîteaux, Tablettes de cire, comptes du boursier, 1321-1325, 11 H 1165, f. 0005263
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: comptes
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Abbaye de Cîteaux, Tablettes de cire, comptes du boursier, 1321-1325, Archives départementales de la Côte-d'Or, 11 H 1165, f. 0005263, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Abbaye de Cîteaux, Tablettes de cire, comptes du boursier, 1321-1325, Archives départementales de la Côte-d'Or, 11 H 1165, f. 0005263, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
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
The preliminary design of heat-integrated multicomponent distillation sequences through generation of flowsheet superstructures
Creators: name: Leeson, Duncan
Publisher: name: Imperial College London
Year: 2018

description: Given that in 2012 distillation was estimated to consume roughly 3% of energy globally, managing the heating and cooling duties of these processes is essential. Currently, many process design strategies involve designing the separation system before energy integration is considered, leading to suboptimal solutions. In this thesis, a model for the preliminary design of a distillation sequence is presented as a MILP, using only basic thermodynamic data from feed components. The model has been developed based on a reduced superstructure with temperatures calculated via a discrete grid. Process streams from elsewhere in the plant are also considered concurrently, and consideration of these often changes the optimal sequence. The examples suggest cost reductions of over 30% when ancillary streams are not considered when compared to a basic heuristical approach, and up to 50% when a small number of additional process streams are included. The model was then further developed to include multieffect distillation, where separators are considered as a system of two parallel columns. Including the opportunity for multieffect distillation led to changes in the optimal sequence, with associated costs reduced by up to a further 30% compared to the previous iteration of the model. The model has been demonstrated on two industrial case studies; crude oil refining and platformate separation. Both examples demonstrate the flexibility of the model to deal with complex industrial problems, with the crude example showing optimise under an uncertain feedstock, while the platformate demonstrates the importance of including as much information about the process as possible to find the optimal result. As a preliminary design tool, the model should be used as initialisation for detailed process design. This has been investigated, with the distribution between multieffect columns made continuous. This led to further cost reductions with a short solution time, due to the initialisation offered by the linear models.
Kinetics, thermodynamics and metal separation studies of transition (Co2+, Ni2+, Cu2+, Zn2+) and heavy metal ions (Cd2+, Hg2+, Pb2+) using novel hybrid ion exchanger—Zirconium amino tris methylene phosphonic acid
Creators: name: Brijesh Shah
name: Chudasama, Uma
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biochemistry
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 20199 Astronomical and Space Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: Zirconium amino tris(methylenephosphonic acid) (Zr-ATMP)—a novel hybrid ion-exchange material of the class of tetravalent metal acid (TMA) salts—has been synthesized via the sol–gel route using inexpensive and easily available chemicals. In the present endeavour, we hereby report various kinetic [ (D0), (Ea) (ΔS*) and thermodynamic parameters [ (K), (ΔG°), (ΔH°) (ΔS°) in the temperature range (30–60 °C)] for transition metal ions (Co2+, Ni2+, Cu2+, Zn2+) and heavy metal ions (Cd2+, Hg2+, Pb2+). Metal ion adsorption with varying concentrations and temperatures has been studied using Langmuir and Fruendlich adsorption isotherms. Sorption behaviour of the metal ions mentioned above towards Zr-ATMP has been studied by evaluating Kd (distribution coefficient) under different conditions. Based on Kd (mL.g−1), the selectivity order for metal ions towards Zr-ATMP is found to be Cu2+ (C.S)>Ni2+ (2980)>Zn2+(1810)>Co2+(1250) amongst transition metal ions and Pb2+(3612)>Cd2+(1601)>Hg2+(125) amongst heavy metal ions. Elution behaviour of these metal ions has been studied using acids and electrolytes. Based on α separation factor, a few binary and ternary metal ion separations have been carried out successfully. Regeneration and reuse of the ion exchanger have also been studied. It is observed that the ion exchanger is effective up to four cycles without much decline in performance. The study indicates that Zr-ATMP has good potential to be used as a cation exchanger.
title: ADCO, Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome I, Cart. 185 (11 H 70), f. 0140v
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome I, Archives départementales de la Côte-d'Or, Cart. 185 (11 H 70), f. 0140v, 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 I, Archives départementales de la Côte-d'Or, Cart. 185 (11 H 70), f. 0140v, 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
Measuring Financial Advice: aligning client elicited and revealed risk
Creators: name: Thompson, John R. J.
name: Feng, Longlong
name: Reesor, R. Mark
name: Grace, Chuck
name: Metzler, Adam
Publisher: name: arXiv
Year: 2021
Subjects: subject: Econometrics (econ.EM)
subject: Applications (stat.AP)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences
subject: 91G70 (Primary) 91C05, 91-10 (Secondary)

description: Financial advisors use questionnaires and discussions with clients to determine a suitable portfolio of assets that will allow clients to reach their investment objectives. Financial institutions assign risk ratings to each security they offer, and those ratings are used to guide clients and advisors to choose an investment portfolio risk that suits their stated risk tolerance. This paper compares client Know Your Client (KYC) profile risk allocations to their investment portfolio risk selections using a value-at-risk discrepancy methodology. Value-at-risk is used to measure elicited and revealed risk to show whether clients are over-risked or under-risked, changes in KYC risk lead to changes in portfolio configuration, and cash flow affects a client's portfolio risk. We demonstrate the effectiveness of value-at-risk at measuring clients' elicited and revealed risk on a dataset provided by a private Canadian financial dealership of over $50,000$ accounts for over $27,000$ clients and $300$ advisors. By measuring both elicited and revealed risk using the same measure, we can determine how well a client's portfolio aligns with their stated goals. We believe that using value-at-risk to measure client risk provides valuable insight to advisors to ensure that their practice is KYC compliant, to better tailor their client portfolios to stated goals, communicate advice to clients to either align their portfolios to stated goals or refresh their goals, and to monitor changes to the clients' risk positions across their practice.
description: 36 pages, 17 figures, 5 tables
Stellar populations in the dwarf spheroidal galaxy Leo I
Creators: name: Caputo, F.
name: Cassisi, S.
name: Castellani, M.
name: Marconi, G.
name: Santolamazza, P.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a detailed study of the color magnitude diagram (CMD) of the dwarf spheroidal galaxy Leo I, based on archival Hubble Space Telescope data. Our photometric analysis, confirming previous results on the brighter portion of the CMD, allow us to obtain an accurate sampling of the stellar populations also at the faint magnitudes corresponding to the Main Sequence. By adopting a homogeneous and consistent theoretical scenario for both hydrogen and central helium-burning evolutionary phases, the various features observed in the CMD are interpreted and reliable estimations for both the distance modulus and the age(s) for the main stellar components of Leo I are derived. More in details, from the upper luminosity of the Red Giant Branch and the lower luminosity of the Subgiant Branch we simultaneously constrain the galaxy distance and the age of the oldest stellar population in Leo I. In this way we obtain a distance modulus (m-M)_V=22.00$\pm$0.15 mag and an age of 10--15 Gyr or 9--13 Gyr, adopting a metallicity Z=0.0001 and 0.0004, respectively. The reliability of this distance modulus has been tested by comparing the observed distribution of the Leo I anomalous Cepheids in the period-magnitude diagram with the predicted boundaries of the instability strip, as given by convective pulsating models.
description: 19 pages, 3 tables, 14 figures To be published in AJ
GPU-accelerated wavelet transforms for the analysis of high frequency data
Creators: name: Waton, Julian Mark
Publisher: name: Imperial College London
Year: 2018

description: This thesis describes new methodologies for wavelet analysis of high frequency data, and presents fast, GPU-accelerated implementations in a new R package, WaveCUDA. We address two main features of high frequency data, namely their large size and also the irregular spacing of their time values. To deal with the size issue, we provide an R package with new parallel algorithms to perform wavelet transforms with the Lifting Scheme. We factorise the Coiflet 6 and Least Asymmetric 8 wavelet transforms into lifting steps and implement the Haar and Daubechies Extremal Phase 4 filters. We achieve considerable speedups, both in these transforms and in code that carries out thresholding schemes for nonparametric regression. We implement standard thresholding rules and provide a fast implementation of the potentially computationally expensive wavelet cross validation method of choosing the threshold. We then present a new regularised V-fold wavelet cross validation scheme for non-dyadic V. We contribute to wavelet analysis of irregularly spaced data by using an entropy-based method for selecting an optimal grid at which to interpolate.
Spectroscopy of Giants of the Sagittarius Dwarf Galaxy
Creators: name: Bonifacio, P.
name: Pasquini, L.
name: Molaro, P.
name: Marconi, G.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we present the first results of the analysis of intermediate resolution ($Δλ\sim 3.5 Å$) spectra of giants of the Sagittarius dwarf galaxy acquired using the ESO NTT telescope. From the deep CCD photometry of Marconi et al (1998a) we have selected a sample of giants representative of the metallicity spread suggested by the comparison of the colour-magnitude diagram of Sagittarius with those of galactic globular clusters. The spectra have been used to measure radial velocities, to confirm the membership to Sagittarius, and to provide a metallicity estimate by using spectral synthesis techniques. The analyzed stars show a spread in metallicities in the range -1.0
description: To be published in the proceedings of Galaxy evolution:Connecting the distant Universe with the local fossil record. Paris, Meudon 21-25 September 1998
The blocks and weights of finite special linear and unitary groups
Creators: name: Feng, Zhicheng
Publisher: name: arXiv
Year: 2018
Subjects: subject: Representation Theory (math.RT)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20C20, 20C33

description: This paper has two main parts. Firstly, we give a classification of the $\ell$-blocks of finite special linear and unitary groups $SL_n(εq)$ in the non-defining characteristic $\ell\ge 3$. Secondly, we describe how the $\ell$-weights of $SL_n(εq)$ can be obtained from the $\ell$-weights of $GL_n(εq)$ when $\ell\nmid\mathrm{gcd}(n,q-ε)$, and verify the Alperin weight conjecture for $SL_n(εq)$ under the condition $\ell\nmid\mathrm{gcd}(n,q-ε)$. As a step to establish the Alperin weight conjecture for all finite groups, we prove the inductive blockwise Alperin weight condition for any unipotent $\ell$-block of $SL_n(εq)$ if $\ell\nmid\mathrm{gcd}(n,q-ε)$.
description: revised version, to appear in Journal of Algebra
Micromanipulator on the tip of a fibre: fabrication and analysis
Creators: name: Power, Maura
Publisher: name: Imperial College London
Year: 2018

description: The development of microrobots is motivated by their potential to enable therapies and procedures that are currently not possible. Miniaturising conventional robot designs to micro-scales, however, is not feasible due to scaling laws and the difficulties in fabrication and assembly. MEMS (Microelectromechanical System) fabrication techniques are the gold standard for devices such as microgrippers, although they are rarely intended for in vivo applications due to constraints on their form-factor. A common embodiment of medical microrobots in the literature are untethered swimming- or crawling-type microrobots that are designed to navigate through the body or for use in microfluidic devices. Alternative tethered microsurgical tools, beyond MEMS, are underrepresented in the literature, while untethered microrobots have experienced a great progression over the last decade. One technology that has aided in many of the advances in microrobotics is two-photon polymerisation (2PP); a 3D printing technology with sub-micron resolution. 2PP is a highly versatile fabrication technique that has already proven itself to be adaptable to a wide range of applications including optics, metamaterials and microrobots. This thesis explores how 2PP could be used to create novel tethered microrobotic tools that are fabricated on fibres (both standard silica-based fibres and more advanced multimaterial fibres). Multichannel fibres (capable of delivering light, electric current, gas, liquids etc.) are a promising platform upon which to fabricate and interface with 2PP-printed end-effectors in order to incorporate both actuation and sensing capabilities. A fabrication protocol for 2PP-printed end-effectors on fibres was developed. Passive-compliant end-effectors were used for both manual and automatic manipulation of microobjects in a closed-chain configuration. Real-time force sensing was incorporated, first using visually-inferred information and then, improving upon this, using an integrated interferometric force-sensing element. A 3-fingered passive-compliant gripper, on the tip of an optical fibre, with this force sensor was fabricated, validated and used in manipulation tasks. Finally, two active-compliant pneumatically-actuated mechanisms on a hollow capillary fibre were demonstrated: a piston with continuous motion and a bistable gripper. The two approaches were characterised, and the bistable gripper was demonstrated to grasp and hold a microbject in its closed state (without holding power) before release.
Poisson groupoids and moduli spaces of flat bundles over surfaces
Creators: name: Álvarez, Daniel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics

description: Let $Σ$ be a compact connected and oriented surface with nonempty boundary and let $G$ be a Lie group equipped with a bi-invariant pseudo-Riemannian metric. The moduli space of flat principal $G$-bundles over $Σ$ which are trivialized at a finite subset of $\partialΣ$ carries a natural quasi-Hamiltonian structure which was introduced by Li-Bland and Severa. By a suitable restriction of the holonomy over $\partial Σ$ and of the gauge action, which is called a decoration of $\partial Σ$, it is possible to obtain a number of interesting Poisson structures as subquotients of this family of quasi-Hamiltonian structures. In this work we use this quasi-Hamiltonian structure to construct Poisson and symplectic groupoids in a systematic fashion by means of two observations: (1) gluing two copies of the same decorated surface along suitable subspaces of their boundaries determines a groupoid structure on the moduli space associated to the new surface, this procedure can be iterated by gluing four copies of the same surface, thereby inducing a double Poisson groupoid structure; (2) on the other hand, we can suppose that $G$ is a Lie 2-group, then the groupoid structure on $G$ descends to a groupoid structure on the moduli space of flat $G$-bundles over $Σ$. These two observations can be combined to produce up to three distinct and compatible groupoid structures on the associated moduli spaces. We illustrate these methods by considering symplectic groupoids over Bruhat cells, twisted moduli spaces and Poisson 2-groups besides the classical examples.
description: v3: revised exposition
Temperatures and composition of cratonic lithosphere from seismic velocity and heat flow modelling
Creators: name: Eeken, Thomas Christian
Publisher: name: Imperial College London
Year: 2018

description: The cause of the stability of cratons, the old cores of continents, is still an enigma. Seismic studies have found that velocities within the cratonic lithosphere are quite variable laterally and in depth. Understanding the nature of this variability may provide information on how cratons are formed and stabilised. In this thesis, I perform a search of plausible thermal and compositional structures of cratonic lithosphere based on heat flow and xenolith constraints to model (using thermodynamic methods), seismic velocities and surface-wave dispersion curves for five different cratons. Sensitivity analyses show that the reasonable assumption of steady-state conductive temperature structure does not allow for sufficient variations in the thermal gradient to match seismic observations and varying the degree of depletion of compositions in the dunite-peridotite range only effects small changes in seismic velocity. We show that for the Kaapvaal, Yilgarn, Slave and Finland cratons, introducing metasomatic minerals (with up to 1 wt% water or 5 wt% carbonate) in the upper parts of the mantle lithosphere, significantly improves the fit to surface wave dispersion curves. The amount of metasomatic material required correlates with increased evidence for magmatic activity in the form of kimberlites. To match 3D seismic heterogeneity in the Eastern Canadian Shield, we require significant lateral variations in the amount of metasomatic minerals, with less modification of Archean Superior than Proterozoic Grenville lithosphere. Larger amounts of metasomatic minerals appear to correlate with geological evidence for magmatic activity, either arc-related during formation, or hotspot related at a later date. Significant concentrations of metasomatic minerals have been previously proposed to explain enigmatic mid-lithospheric discontinuities in old lithosphere. In addition, such modification, if pervasive enough to affect surface wave dispersion observations, could contribute to stable density stratification of the cratonic lithosphere.
Detection of a sub-arcsecond dust shell around the Wolf-Rayet star WR 112
Creators: name: Ragland, S.
name: Richichi, A.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A lunar occultation event of the Wolf-Rayet star WR 112 (type WC9) has been observed simultaneously from two independent telescopes at lambda = 2.2microns, allowing us to investigate this source with an angular resolution of approx 0.003 arc-seconds. We have detected a circumstellar dust envelope whose brightness distribution can be approximately fitted by a gaussian with a FWHM of approx 0.06 arc-seconds (approx 10^15 cm). We present and discuss the reconstructed brightness profile, which shows an asymmetry in the radial dust distribution. The derived dust grain temperature at the inner dust zone of approx 1150 K is consistent with available model calculations. There is no signature of the central star from our observations, providing a direct confirmation that the circumstellar shell emission dominates over the photospheric emission at 2.2microns as predicted by fits to the spectral energy distribution. Further lunar occultation observations at different position angles are essential to reconstruct the 2--D image of the dust shell around WR 112. The current series of lunar occultations of WR 112 will continue to the end of 1999 and will be visible for all equatorial and southern latitude observatories.
description: 5 pages, 1 figure
The Active Corona of HD 35850 (F8 V)
Creators: name: Gagne, Marc
name: Valenti, Jeff A.
name: Linsky, Jeffrey L.
name: Tagliaferri, Gianpiero
name: Covino, Stefano
name: Guedel, Manuel
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present Extreme Ultraviolet Explorer spectroscopy and photometry of the nearby F8 V star HD 35850 (HR 1817). The EUVE spectra reveal 28 emission lines from Fe IX and Fe XV to Fe XXIV. The Fe XXI 102, 129 A ratio yields an upper limit for the coronal electron density, log n < 11.6 per cc. The EUVE SW spectrum shows a small but clearly detectable continuum. The line-to-continuum ratio indicates approximately solar Fe abundances, 0.8 < Z < 1.6. The resulting emission-measure distribution is characterized by two temperature components at log T of 6.8 and 7.4. The EUVE spectra have been compared with non-simultaneous ASCA SIS spectra of HD 35850. The SIS spectrum shows the same temperature distribution as the EUVE DEM analysis. However, the SIS spectral firs suggest sub-solar abundances, 0.34 < Z < 0.81. Although some of the discrepancy may be the result of incomplete X-ray line lists, we cannot explain the disagreement between the EUVE line-to-continuum ratio and the ASCA-derived Fe abundance. Given its youth (t ~ 100 Myr), its rapid rotation (v sin i ~ 50 km/s), and its high X-ray activity (Lx ~ 1.5E+30 ergs/s), HD 35850 may represent an activity extremum for single, main-sequence F-type stars. The variability and EM distribution can be reconstructed using the continuous flaring model of Guedel provided that the flare distribution has a power-law index of 1.8. Similar results obtained for other young solar analogs suggest that continuous flaring is a viable coronal heating mechanism on rapidly rotating, late-type, main-sequence stars.
description: 32 pages incl. 14 figures and 3 tables. To appear in the 1999 April 10 issue of The Astrophysical Journal
Electroweak and QCD corrections to $Z$-boson production with one $b$ jet in a massive 5 Flavor Scheme
Creators: name: Figueroa, Diogenes
name: Honeywell, Steven
name: Quackenbush, Seth
name: Reina, Laura
name: Reuschle, Christian
name: Wackeroth, Doreen
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the $O(α_s α^2)$ and $O(α_s^2 α)$ contributions to the production cross section of a $Z$ boson with one $b$ jet at the Large Hadron Collider (LHC), and study their phenomenological relevance for LHC physics. The accurate prediction of hadronic $Z+b$-jet production is needed to control a background that greatly affects both the measurement of Higgs-boson properties and searches of new physics at the LHC. At the same time it could enable the first precise measurement of the $b$-quark parton distribution function. In this context $b$-quark mass effects become relevant and need to be studied with care, both at the level of the hard process and at the level of the initial- and final-state parton evolution. It is the aim of this paper to explore some of these issues in the framework of a massive 5 Flavor Scheme and to assess the need for both the inclusion of electroweak corrections, in addition to QCD corrections, and $b$-quark mass effects in the prediction of total and differential cross sections for hadronic $Z+b$-jet production.
description: 32 pages, 7 figures, 2 tables. V3: Version to appear in PRD
Development and assessment of adaptive urban flood risk infrastructure under conditions of deep uncertainty
Creators: name: Babovic, Filip
Publisher: name: Imperial College London
Year: 2018

description: Globally, the risk associated with urban pluvial flooding is growing due to the confluence of climate change and urbanisation. The inherently complex nature of these processes makes it unclear what the impacts will be— including when and where they will happen, or to what degree. It is therefore said that adaptation to these risks occurs under conditions of deep uncer- tainty. Deep Uncertainty implies that methods which were historically effective at planning are no longer appropriate. Regardless new infrastructure must be built and existing infrastructure adapted. This thesis explores Decision Making under Deep Uncertainty and its implications for the sustainable long-term planning of drainage infrastructure. To address this issue, the effects of potential changes were explored through use of an Adaptation Tipping Points methodology. This methodology was highly modified to extend its applicability far beyond previous work. This method was applied to a case study which was modelled within Infoworks ICM, the drainage system was then stress tested against changes to the 30-year return period design storm. The effectiveness of 53 potential strategies to alleviate flooding by the potential changes were evaluated. Adaptation Pathways were generated, providing decision makers information regarding incre- mental adaptations for changes in the depth and intensity of the design storm. It is shown that the most effective Adaptation Pathway can vary significantly depending on which changes to the design storm take place. This is due to the non-linear interaction of multiple drainage processes and the importance of path dependence. This thesis developed a novel methodology to calculate the costs and benefits of a set of Adap- tation Pathways. This method builds upon real options to provide a cost-benefit analysis which encompassed both flood benefits and ecosystem services. Furthermore, the effect of uncertainty on financial performance was assessed. It is shown that the financial performance of pathways is highly influenced by the order in which solutions are implemented. However, very rarely does the uncertainty surrounding a project’s financial viability obfuscate whether it will be a success or not. The final result was a set of fully costed Adaptation Pathways that decision makers could use to identify the best adaptation strategy.
D.mel_sim_DP(1;Y).xlsx
Creators: name: Shahandeh, Michael
name: Pischedda, Alison
name: Turner, Thomas L.
Publisher: name: figshare
Year: 2018
Subjects: subject: 60412 Quantitative Genetics (incl. Disease and Trait Mapping Genetics)
subject: FOS: Biological sciences
subject: 60411 Population, Ecological and Evolutionary Genetics

description: Raw courtship frequency data for parents, reciprocal F1's, duplication hybrids, and overlapping strains.
Complexity and action for warped AdS black holes
Creators: name: Auzzi, Roberto
name: Baiguera, Stefano
name: Grassi, Matteo
name: Nardelli, Giuseppe
name: Zenoni, Nicolo
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Complexity=Action conjecture is studied for black holes in Warped AdS$_3$ space, realized as solutions of Einstein gravity plus matter. The time dependence of the action of the Wheeler-DeWitt patch is investigated, both for the non-rotating and the rotating case. The asymptotic growth rate is found to be equal to the Hawking temperature times the Bekenstein-Hawking entropy; this is in agreement with a previous calculation done using the Complexity=Volume conjecture.
description: 21 pages, 8 figures, V2:minor changes
Demonstrating the effects of climate adaptation measures for the Austrian city of Linz as part of CLARITY's climate services
Creators: name: Kainz, Astrid
name: Zuvela-Aloise, Maja
name: Goler, Robert
name: de Wit, Rosmarie
name: Hahn, Claudia
Publisher: name: Zenodo
Year: 2019
Subjects: CLARITY, climate services, ECCA2019

description: Urban areas and traffic infrastructure are particularly affected by climate change, thus raising the need for well-founded climate adaptation strategies. The project CLARITY, funded by EU Horizon 2020 Programme, aims at implementing a climate services information system (CSIS) specifically designed to address climate related hazards and to provide climate change adaptation strategies for supporting urban infrastructure development. The CSIS is tested and demonstrated on four study areas in different regional and climatological contexts. In this study, we focus on the Austrian demonstration case that addresses the compound effects of heat waves and urban heat islands in the city of Linz, which under climate change are expected to worsen. The dynamical urban climate model MUKLIMO_3, developed by the Deutscher Wetterdienst (DWD), is used to investigate urban heat island effects and to carry out sensitivity simulations of climate adaptation measures for the city of Linz and its surrounding area. The model simulations, performed at a horizontal resolution of 100m, are based on Copernicus Urban Atlas land cover data combined with local data provided by the city administration of Linz to consider city-specific structures. A dynamical-statistical downscaling method is applied to derive climate indices for long-term historical and future climate periods by combining high-resolution model output with observational data and regional climate projections. Model results are used to analyze the current and future climatic situation in the city of Linz in terms of urban heat load. Furthermore, several climate adaptation scenarios are tested with respect to their efficiency in reducing urban heat stress. These include, amongst others, roof greening, increased albedo of roofs and walls, unsealing of surfaces and increased vegetation cover. Depending on the scenario, moderate to strong cooling effects are found as indicated by a reduction in the mean annual number of summer days, hot days and tropical nights. The main findings obtained in this study are used to demonstrate how urban climate models promote the efficiency assessment of different climate adaptation strategies and how they contribute to climate resilient urban planning.
A possible gravitational lens in the Hubble Deep Field South
Creators: name: Barkana, Rennan
name: Blandford, Roger
name: Hogg, David
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We model an apparent gravitational lens system HDFS 2232509-603243 in the Hubble Deep Field South. The system consists of a blue V=25 mag arc separated by 0.9 arcsec from a red V=22 mag elliptical galaxy. A mass distribution which follows the observed light distribution with a constant mass-to-light ratio can fit the arc component positions if external shear is added. A good fit is also obtained with simple parameterized models, and all the models predict a forth image fainter than the detection limit. The inferred mass-to-light ratio is roughly 15 in solar units if the lens is at redshift 0.6. The lens models predict a velocity dispersion of about 280 km/s which could be confirmed with spectroscopy.
description: 12 pages, 3 PostScript figures, accepted by ApJL. Revised to account for the referee's report, also some rewriting
Full-Duplex Strategy for Video Object Segmentation
Creators: name: Ji, Ge-Peng
name: Fan, Deng-Ping
name: Fu, Keren
name: Wu, Zhe
name: Shen, Jianbing
name: Shao, Ling
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Previous video object segmentation approaches mainly focus on using simplex solutions between appearance and motion, limiting feature collaboration efficiency among and across these two cues. In this work, we study a novel and efficient full-duplex strategy network (FSNet) to address this issue, by considering a better mutual restraint scheme between motion and appearance in exploiting the cross-modal features from the fusion and decoding stage. Specifically, we introduce the relational cross-attention module (RCAM) to achieve bidirectional message propagation across embedding sub-spaces. To improve the model's robustness and update the inconsistent features from the spatial-temporal embeddings, we adopt the bidirectional purification module (BPM) after the RCAM. Extensive experiments on five popular benchmarks show that our FSNet is robust to various challenging scenarios (e.g., motion blur, occlusion) and achieves favourable performance against existing cutting-edges both in the video object segmentation and video salient object detection tasks. The project is publicly available at: https://dpfan.net/FSNet.
description: Accepted at ICCV-2021 (Journal Submission). Project Page: http://dpfan.net/FSNet/
Variability of Jovian Meteorology from Ground-Based Mid-Infrared Observations
Creators: name: Donnelly, Pádraig Thomas
Publisher: name: University of Leicester
Year: 2021
Subjects: Uncategorized

description: This thesis uses ground-based mid-infrared imaging data from the VISIR instrument at the Very Large Telescope in Chile to study the temperature, composition and aerosol distribution in Jupiter’s atmosphere. The mid-infrared region of the jovian spectrum probes upper-tropospheric and stratospheric dynamics and chemistry that give a three-dimensional view of the atmosphere. The work in this thesis is part of a wider ground-support campaign for the NASA Juno mission. Due to the lack of comparable mid-infrared sensors on the spacecraft, VISIR provides much-needed spatial, temporal and spectral coverage of Jupiter concurrent with each spacecraft orbit.The two datasets considered in this thesis are intended to assess the temporal variability of Jupiter’s atmosphere before and during the Juno mission. These are 15/16 February 2016 (before Juno orbital insertion) and 24-27 May 2018 (concurrent with the thirteenth passage of the spacecraft). Global multi-spectral maps are obtained on each date that enable the atmospheric retrieval of the zonal mean properties of Jupiter.In this work we develop a new method that exploits the centre-to-limb effects of the atmosphere to extract more information from the imaging data, to increase vertical sensitivity and break the degeneracies that arise from the low spectral resolution associated with imaging. The atmospheric profiles derived from this method are used to investigate discrete features and other meteorological phenomena in 2016 via spatially-resolved retrievals of temperature, composition and aerosols. Finally, the centre-to-limb method is extended to the polar latitudes in 2018, concurrent with Juno polar observations, to estimate the zonal mean structure of temperature and composition across the polar vortex boundary to investigate the role of aerosols in radiative balance at the poles.
Social Media Toolkit for Social Work Field Educators 2017- Educator Guide
Creators: name: Hitchcock, Laurel
name: Curington, Allison
Publisher: name: figshare
Year: 2018
Subjects: subject: 160701 Clinical Social Work Practice
subject: FOS: Sociology

description: This is the 2017 edition of Educator's Guide for the Social Media Toolkit for Social Work Field Educators.
Radial Redshift Space Distortions
Creators: name: Bharadwaj, Somnath
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The radial component of the peculiar velocities of galaxies cause displacements in their positions in redshift space. We study the effect of the peculiar velocities on the linear redshift space two point correlation function. Our analysis takes into account the radial nature of the redshift space distortions and it highlights the limitations of the plane parallel approximation. We consider the problem of determining the value of βand the real space two point correlation function from the linear redshift space two point correlation function. The inversion method proposed here takes into account the radial nature of the redshift space distortions and can be applied to magnitude limited redshift surveys that have only partial sky coverage.
description: 26 pages including 11 figures, to appear in ApJ
Gate-tunable magnetism of C adatoms on graphene
Creators: name: Nokelainen, J.
name: Rozhansky, I. V.
name: Barbiellini, B.
name: Lähderanta, E.
name: Pussi, K.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have performed density functional theory calculations of graphene decorated with carbon adatoms, which bind at the bridge site of a C--C bond. Earlier studies have shown that the C adatoms have magnetic moments and have suggested the possibility of ferromagnetism with high Curie temperature. Here we propose to use a gate voltage to fine tune the magnetic moments from zero to 1$μ_B$ while changing the magnetic coupling from antiferromagnetism to ferromagnetism and again to antiferromagnetism. These results are rationalized within the Stoner and RKKY models. When the SCAN meta-GGA correction is used, the magnetic moments for zero gate voltage are reduced and the Stoner band ferromagnetism is slightly weakened in the ferromagnetic region.
description: Version accepted to publication
Partial Hasse invariants for Shimura varieties of Hodge-type
Creators: name: Imai, Naoki
name: Koskivirta, Jean-Stefan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Algebraic Geometry (math.AG)
subject: Number Theory (math.NT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 14G35, 20G40

description: For a connected reductive group $G$ over a finite field, we define partial Hasse invariants on the stack of $G$-zip flags. We obtain similar sections on the flag space of Shimura varieties of Hodge-type. They are mod $p$ automorphic forms which cut out a single codimension one stratum. We study their properties and show that such invariants admit a natural factorization through higher rank automorphic vector bundles. We define the socle of an automorphic vector bundle, and show that partial Hasse invariants lie in this socle.
description: 38 pages
THE IMPACT OF AGROTECHNICAL MEASURES ON PRODUCTIVITY INDICATORS OF TYPICAL IRRIGATED GRAY-SOIL
Creators: name: Burkhanova, Dilnavoz
name: Khoshatova, Shakhlo
name: Rajabova, Mushtariy
name: Tastemirova, Jasmine
Publisher: name: Zenodo
Year: 2024

description: The article presents the importance of studying the impact of agrotechnical measures on the productivity of typical irrigated gray-earth soils, changes in the properties of typical irrigated gray-earth soils under the influence of fertilizers. In addition to a sufficient amount of organic and mineral fertilizers in the soil, attention should be paid to improving the soil structure. In order for the soil to be fertile, it is necessary to study its properties, composition and various processes occurring in the soil. The aim is to study the distribution of fertility indicators of typical gray-earth soils, the influence of erosion processes on them, the influence of anthropogenic factors and agrotechnical measures-irrigation, mineral fertilizers, organic fertilizers on soil fertility. Various types of crops, mineral and organic fertilizers affect soil fertility. As a result of the conversion of organic residues, the soil is enriched with nitrogen.
Social Media Toolkit for Social Work Field Educators - Educator Guide
Creators: name: Hitchcock, Laurel
name: Curington, Allison
Publisher: name: figshare
Year: 2018
Subjects: subject: 160701 Clinical Social Work Practice
subject: FOS: Sociology

description: This is the Educator's Guide for the Social Media Toolkit for Social Work Field Educators.