cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Dispersal and the distributions of mammals: moving towards improved predictions
Creators: name: Whitmee, Sarah Louise
Publisher: name: Imperial College London
Year: 2011

description: Climate change is predicted to become a major cause of species loss in the coming century. Shifts in distribution as a response to changing conditions have already been observed for many terrestrial organisms. A species’ capacity to respond to climate change will depend greatly on its ability to track suitable conditions; those unable to track optimum conditions will be under increased threat of local extinction. There is, therefore, a need to include dispersal parameters in models that forecast the impact of climate change on species distributions, but this is limited by a paucity of dispersal data for many species. In this thesis I develop predictive models of dispersal ability to improve estimates of both distance and rate of dispersal in mammals. Chapter 2 presents a database of empirically derived dispersal distances for mammals and an analysis of the probability distribution of those distances, aimed at describing the ‘tail’ of the kernel, important in understanding long distance dispersal. Chapter 3 assesses the explanatory power of species’ life history and ecology, within a phylogenetic framework, to predict dispersal distances. Chapter 4 examines the roles of dispersal and colonisation ability in mediating the extent to which a species can fill its potential environmental niche and quantifies the effects of model accuracy and projection extent on this approach. Chapter 5 utilises a new technique for identifying patterns of geographic and phylogenetic constraint to examine the dual roles of evolutionary history and environment in determining a species’ ability to fill its potential environmental niche. This thesis helps to clarify controls on range limits and to incorporate such controls into species distribution models. By providing more accurate predictions of the impacts of climate change on species range size and location, this work helps us to better understand the threat to species diversity from global change.
Casimir Energy of a Semi-Circular Infinite Cylinder
Creators: name: Nesterenko, V. V.
name: Lambiase, G.
name: Scarpetta, G.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Casimir energy of a semi-circular cylindrical shell is calculated by making use of the zeta function technique. This shell is obtained by crossing an infinite circular cylindrical shell by a plane passing through the symmetry axes of the cylinder and by considering only a half of this configuration. All the surfaces, including the cutting plane, are assumed to be perfectly conducting. The zeta functions for scalar massless fields obeying the Dirichlet and Neumann boundary conditions on the semi-circular cylinder are constructed exactly. The sum of these zeta functions gives the zeta function for electromagnetic field in question. The relevant plane problem is considered also. In all the cases the final expressions for the corresponding Casimir energies contain the pole contributions which are the consequence of the edges or corners in the boundaries. This implies that further renormalization is needed in order for the finite physical values for vacuum energy to be obtained for given boundary conditions.
description: REVTeX, 16 pages, 1 figure in a separate fig1.eps file; revised version accepted for publication in J. Math. Phys
The Possibility of Thermal Instability in Early-Type Stars Due to Alfven Waves
Creators: name: Goncalves, D. R.
name: Jatenco-Pereira, V.
name: Opher, R.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It was shown by dos Santos et al. the importance of Alfvén waves to explain the winds of Wolf-Rayet stars. We investigate here the possible importance of Alfvén waves in the creation of inhomogeneities in the winds of early-type stars. The observed infrared emission (at the base of the wind) of early-type stars is often larger than expected. The clumping explains this characteristic in the wind, increasing the mean density and hence the emission measure, making possible to understand the observed infrared, as well as the observed enhancement in the blue wing of the $H_α$ line. In this study, we investigate the formation of these clumps a via thermal instability. The heat-loss function used, $H(T,n)$, includes physical processes such as: emission of (continuous and line) recombination radiation; resonance line emission excited by electron collisions; thermal bremsstrahlung; Compton heating and cooling; and damping of Alfvén waves. As a result of this heat-loss function we show the existence of two stable equilibrium regions. The stable equilibrium region at high temperature is the diffuse medium and at low temperature the clumps. Using this reasonable heat-loss function, we show that the two stable equilibrium regions can coexist over a narrow range of pressures describing the diffuse medium and the clumps.
description: 21 pages (psfig.sty), 5 figures (included), ApJ accepted. Also available at http://www.iagusp.usp.br/preprints/preprint.html
Three Generations in the Fermionic Construction
Creators: name: Chaudhuri, Shyamoli
name: Hockney, George
name: Lykken, Joseph D.
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We obtain three generation SU(3)_c X SU(2)_L X U(1)_Y string models in all of the exactly solvable (0,2) constructions sampled by fermionization. None of these examples, including those that are symmetric abelian orbifolds, rely on the Z_2 X Z_2 orbifold underlying the NAHE basis. We present the first known three generation models for which the hypercharge normalization, k_1, takes values smaller than that obtained from an SU(5) embedding, thus lowering the effective gauge coupling unification scale. All of the models contain fractional electrically charged and vectorlike exotic matter that could survive in the light spectrum.
description: harvmac, 51 pages
Renormalization Group Study of Chern-Simons Field Coupled to Scalar Matter in a Modified BPHZ Subtraction Scheme
Creators: name: de Albuquerque, L. C.
name: Gomes, M.
name: da Silva, A. J.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We apply a soft version of the BPHZ subtraction scheme to the computation of two-loop corrections from an Abelian Chern-Simons field coupled to (massive) scalar matter with a $λ(Φ^\dagΦ)^2$ and $ν(Φ^\dagΦ)^3$ self-interactions. The two-loop renormalization group functions are calculated. We compare our results with those in the literature.
description: 15 pages, 7 figures, revtex. To appear in Phys. Rev. D
Linear-Scaling First-Principles Calculations of Entire Polar Semiconductor Nanorods
Creators: name: Avraam, Philip
Publisher: name: Imperial College London
Year: 2011

description: This thesis describes a study of polar semiconductor nanorods using first-principles quantum-mechanical computer simulations. Semiconductor nanostructures in solution are a very exciting class of material due to our growing ability to manipulate their shapes, sizes and the superstructures they assemble in,to produce a wide range of technologically useful properties. Nanocrystals of binary semiconductor, such as those of ZnO, have been observed to exhibit very large dipole moments which affect their internal electronic structure (and therefore their optical properties, for example) as well as their interactions with the surrounding environment, which can affect the kinetics of self-assembly and the stability of the structures formed. A detailed understanding of the factors contributing to this large polarity in nanocrystals has proven elusive for two main reasons: (1) the multitude of factors that are involved, ranging from the effects of surface chemistry, to the non-centrosymmetric nature of the underlying crystal, to quantum confinement, to long-range electrostatics, to interactions with the solvent and considerations of thermodynamic stability; and (2) the limitations of current experimental technique, which don’t allow us the level of control over, or knowledge of the state of our system, that is necessary to be able to disaggregate these factors. The main advantage of computer simulation is the level of control over and knowledge of our ‘experimental’ conditions that it allows, thus making it an ideal tool for addressing this problem. Recent developments in linear-scaling density-functional theory, combined with improvements in computational power, have for the first time brought accurate quantum-mechanical methods in to the realm of applicability to nanocrystals of realistic size. This thesis focuses on how a nanorod’s polarity and electronic structure are affected by changes in the surface terminating species, by surface relaxations, nanorod size, semiconductor type, applied electric fields, and interactions with neighbouring nanorods.
Kinetic Studies of Actin Folding by the Chaperonin CCT
Creators: name: Stuart, Sarah Frances
Publisher: name: Imperial College London
Year: 2011

description: The chaperonin containing TCP1 (CCT) is an essential protein in eukaryotes, and is vital for the correct folding of various obligate substrates including the cytoskeletal proteins actin and tubulin and the WD40 repeat containing proteins Cdc20 and Cdh1. CCT is highly complex and interacts with some proteins only transiently; as such the study of the mode of binding and the mechanism by which proteins are folded by the molecular chaperone is very challenging. I have used spectroscopic techniques to study the folding of Cdh1 and actin by CCT. The dimensions of CCT are such that Förster resonance energy transfer (FRET) could be used to measure distances within the complex, providing that fluorophores could be selectively introduced. Through labelling of a fragment of the WD40 propeller of Cdh1 and binding of a fluorescently labelled calmodulin (CaM) to the calmodulin binding peptide (CBP) tag introduced into two CCT subunits, it was hoped that subunits which bind to this region of Cdh1 could be identified. Following expression and purification of a stable Cdh1 fragment, methods for selective labelling of the protein were developed. The complex formed between the fluorescently labelled Cdh1 fragment, CaM and CCT was isolated by sucrose gradient. Unfortunately, no significant, reproducible FRET signal could be identified, indicating that this technique was not suited to the study of Cdh1 folding by CCT. Actin is an essential eukaryotic protein which polymerises to form filaments involved in many different cellular processes. CCT subunits which interact with actin have been identified, but the mechanism by which actin is folded is not well understood and has previously relied on the trapping of actin-CCT complexes from non-functional systems. Since the discovery of PLP2 as a cofactor involved in the actin folding process in yeast, pure in vitro actin assays have been possible. Through labelling of the C-terminus of actin with the environmentally sensitive fluorophore acrylodan, it was possible to monitor the kinetics of actin folding by CCT spectroscopically. Non-hydrolysable ATP analogues were used which allowed the identification of two separate stages in the actin folding process on CCT, an initial rearrangement of the two domains of actin followed by packing of the actin C-terminus. The importance of the actin C-terminus in actin folding and stability was highlighted by the effect of the probe with which actin was labelled on folding. The effect of mutations in CCT on the rate of actin folding was also investigated using the spectroscopic folding assay, as well as the effect of truncations of PLP2. It was found that the mutant CCTanc2, which is from a strain of yeast that produces defective actin structures and contains a mutation in subunit CCT4, behaves differently to wild type CCT at higher temperatures and concentrations of ATP. PLP2 appears to be exceptionally important for productive actin folding by CCTanc2.
Presenting academic research in an exhibition: the case of the Portsmouth Block Mills
Creators: name: Mauranen, Maria Katariina
Publisher: name: Imperial College London
Year: 2012

description: This dissertation is based on a poster exhibition of the Portsmouth Block Mills, a steampowered workshop at Portsmouth Naval Dockyard, designed to produce the wooden pulley blocks used to manage a sailing ship’s rigging. The exhibition is presented as a kind of experiment, intended to discover whether academic history can be communicated to a wide audience in a museum environment. In designing the exhibition I drew upon a range of academic literature. The key aim is to mediate between the often complex scholarly work of academic historians and the potential museums have for attracting, entertaining and educating audiences. The exhibition portrayed the Block Mills in the wide historical context of war, industrialisation and workforce control. The central concept of the exhibition was based on the notion of the Block Mills as a manifestation of the Panopticon principle of surveillance. The exhibition was mounted in Portsmouth Historic Dockyard in July 2009. An audience survey was used to assess the effectiveness of the display in conveying the scholarly content. A diary was kept throughout to try to give as accurate an account as possible of the creative process of production. By analysing the creative process the dissertation provides a new perspective on exhibition design, thereby addressing a gap in the museological literature. It will thus be relevant to the wider museum community.
Mapping material stocks of buildings and infrastructure around the world
Creators: name: Wiedenhofer, Dominik
Publisher: name: Zenodo
Year: 2024

description: Understanding the size and spatial distribution of socio-economic material stocks is important to inform strategies aimed at more sustainable resource management, a circular economy, as well as climate change mitigation. Over the last two decades, research on mapping material stocks has made major progress, which I will shortly give an overview about. Then I will introduce recent remote sensing based, big data efforts yielding high-resolution mappings of buildings and mobility infrastructure around the world. I will finalize with reflections about the state-of-the-art and important next steps.

Presentation slides for the webinar hosted by the journal Resources, Conservation & Recycling.
WHO Country Filters for LMIC Countries
Creators: name: Library and Digital Information Networks, World Health Organization
Publisher: name: Zenodo
Year: 2024

description: Country filters have been developed for PubMed: https://pubmed.ncbi.nlm.nih.gov 

Countries were limited to low‐ and middle‐income countries (LMIC) based on the World Bank (WB) yearly updated Country Classification, including Low-Income, Lower-Middle-Income and Upper-Middle-Income Economies, please see the WB current and historical classification for the fiscal year 1989 onwards:

https://datahelpdesk.worldbank.org/knowledgebase/articles/906519-world-bank-country-and-lending-groups

These filters were developed to be used primarily when searching for studies to include in systematic reviews for a specific country or a combination of countries.
title: ADCO, Grènetier de Cîteaux : comptes (1499-1503) (11 H 1173), f. 00137
Creators: name: de la Côte-d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CBMA/CG21/F.PETOT/2019
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: comptes
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Grènetier de Cîteaux : comptes (1499-1503), Archives départementales de la Côte-d'Or, (11 H 1173). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Grènetier de Cîteaux : comptes (1499-1503), Archives départementales de la Côte-d'Or, (11 H 1173), f. 00137, 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
Substrate-Induced Shifts and Screening in the Fluorescence Spectra of Supramolecular Adsorbed Organic Monolayers
Creators: name: Kerfoot, James
name: Korolkov, Vladimir V.
name: Nizovtsev, Anton S.
name: Jones, Ryan
name: Taniguchi, Takashi
name: Watanabe, Kenji
name: Lesanovsky, Igor
name: Olmos, Bea
name: Besley, Nicholas A.
name: Besley, Elena
name: Beton, Peter H.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have investigated the influence of the substrate on the fluorescence of adsorbed organic molecules. Monolayer films of perylene-3,4,9,10-tetracarboxylic-3,4,9,10-diimide (PTCDI), a supramolecular network formed from PTCDI and melamine, and perylene-3,4,9,10-tetracarboxylic-3,4,9,10-dianhydride (PTCDA) have been deposited on hexagonal boron nitride (hBN). The principal peaks in the fluorescence spectra of these films were red-shifted by up to 0.37 eV relative to published measurements for molecules in helium droplets. Smaller shifts (~0.03 eV) arising from interactions between neighbouring molecules are investigated by comparing the fluorescence of distinct arrangements of PTCDI, which are templated by supramolecular self-assembly and determined with molecular resolution using atomic force microscopy under ambient conditions. We compare our experimental results with red-shifts calculated using a combination of a perturbative model and density functional theory which account for, respectively, resonant and non-resonant effects of a dielectric hBN substrate. We show that the substrate gives rise to a red-shift in the fluorescence of an adsorbed molecule and also screens the interactions between neighbouring transition dipole moments; both these effects depend on the refractive index of the substrate.
Dark Matter Halos within Clusters
Creators: name: Ghigna, Sebastiano
name: Moore, Ben
name: Governato, Fabio
name: Lake, George
name: Quinn, Thomas
name: Stadel, Joachim
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We examine the properties of dark matter halos within a rich galaxy cluster using a high resolution simulation that captures the cosmological context of a cold dark matter universe. The mass and force resolution permit the resolution of 150 halos with circular velocities larger than 80 kms within the cluster's virial radius of 2 Mpc. This enables an unprecedented study of the statistical properties of a large sample of dark matter halos evolving in a dense environment. The cumulative fraction of mass attached to these halos varies from 0% at 200 kpc, to 13% at the virial radius. Even at this resolution the overmerging problem persists; halos that pass within 200 kpc of the cluster center are tidally disrupted. Additional substructure is lost at earlier epochs within the massive progenitor halos. The median ratio of apocentric to pericentric radii is 6:1; the orbital distribution is close to isotropic, circular orbits are rare, radial orbits are common. The orbits of halos are unbiased with respect to both position within the cluster and with the orbits of the smooth dark matter background and no velocity bias is detected. The tidal radii of surviving halos are generally well-fit using the simple analytic prediction applied to their orbital pericenters. Halos within clusters have higher concentrations than those in the field. Within the cluster, halo density profiles can be modified by tidal forces and individual encounters with other halos that cause significant mass loss - ``galaxy harassment''. Mergers between halos do not occur inside the clusters virial radius.
description: LaTeX MN style, 20 pages, 30 figures included + 1 colour plot
$τ$-function for analytic curves
Creators: name: Kostov, I. K.
name: Krichever, I.
name: Mineev-Weinstein, M.
name: Wiegmann, P.
name: Zabrodin, A.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review the concept of $τ$-function for simple analytic curves. The $τ$-function gives a formal solution to the 2D inverse potential problem and appears as the $τ$-function of the integrable hierarchy which describes conformal maps of simply-connected domains bounded by analytic curves to the unit disk. The $τ$-function also emerges in the context of topological gravity and enjoys an interpretation as a large $N$ limit of the normal matrix model.
description: 13 pages, no figures, prepared for Proccedings of MSRI Workshop ``Matrix Models and Painlev\'e Equations'', Berkeley (USA) 1999
The Classical Schrodinger's Equation
Creators: name: Mielnik, Bogdan
name: Reyes, Marco A.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A non perturbative numerical method for determining the discrete spectra is deduced from the classical analogue of the Schrodinger's equation. The energy eigenvalues coincide with the bifurcation parameters for the classical orbits.
description: UUEncoded Postscript, 18 pages, 4 figures inserted in text
"EVALUATION OF RENAL AND CARDIAC HEMODYNAMICS IN LUPUS NEPHRITIS PATIENTS"
Creators: name: Khaydarov, R.M.
name: Zhabbarov, O.O.
name: Umarova, Z.F.
name: Nazarova, N.O.
name: Kodirova, Sh.A.
name: Khodzhanova, Sh.I.
Publisher: name: Zenodo
Year: 2024

description: Lupus nephritis (LN) is a significant renal disorder stemming from systemic lupus erythematosus (SLE). It occurs when the immune system mistakenly attacks the kidneys, leading to potential kidney failure. This disease can also impact cardiac hemodynamics due to the intricate relationship between renal and cardiac functions. This study aims to investigate the renal and cardiac hemodynamics in patients suffering from LN.
Detailed Mass Map of CL0024+1654 from Strong Lensing
Creators: name: Tyson, J. Anthony
name: Kochanski, Greg P.
name: Dell'Antonio, Ian P.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We construct a high resolution mass map of the z=0.39 cluster 0024+1654, based on parametric inversion of the associated gravitational lens. The lens creates eight well-resolved sub-images of a background galaxy, seen in deep imaging with HST. Excluding mass concentrations centered on visible galaxies, more than 98% of the remaining mass is represented by a smooth concentration of dark matter centered near the brightest cluster galaxies, with a 35 h^{-1} kpc soft core. The asymmetry in the mass distribution is <3% inside 107 ~h^{-1} kpc radius. The dark matter distribution we observe in CL0024 is far more smooth, symmetric, and nonsingular than in typical simulated clusters in either Omega=1 or Omega=0.3 CDM cosmologies. Integrated to 107 h^{-1} kpc radius, the rest-frame mass to light ratio is M/L_V = 276\pm 40 h (M/L_V)_solar.
description: 16 pages, 4 figures (3 .jpg, 1 .ps), minor changes to make consistent with the final ApJL article. To appear in ApJL, May 8 1998
Spectral geometry of spacetime
Creators: name: Kopf, T.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Spacetime, understood as a globally hyperbolic manifold, may be characterized by spectral data using a 3+1 splitting into space and time, a description of space by spectral triples and by employing causal relationships, as proposed earlier. Here, it is proposed to use the Hadamard condition of quantum field theory as a smoothness principle.
description: AMS-LaTeX, 6 pages,Talk presented at the Euroconference on "Non-Commutative Geometry And Hopf Algebras In Field Theory And Particle Physics" Torino, Villa Gualino, September 20 - 30, 1999
Supplementary document for Fresnel incoherent compressive holography toward 3D videography via dual-channel simultaneous phase-shifting interferometry - 6894928.pdf
Creators: name: Wang, Huiyang
name: xianxin, han
name: Wen, Tianzhi
name: Wang, Yuheng
name: Liu, Hongzhan
name: Lu, Xiaoxu
name: Rosen, Joseph
name: zhong, Liyun
Publisher: name: Optica Publishing Group
Year: 2024
Subjects: Optical Networks and Systems
Photonics, Optoelectronics and Optical Communications
Video Communications

description: supplement 1
Loop induced $H^\pm \rightarrow W^\pm Z$ decays in the aligned two-Higgs-doublet model
Creators: name: Abbas, Gauhar
name: Das, Diganta
name: Patra, Monalisa
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a complete one-loop computation of the $H^\pm \rightarrow W^\pm Z$ decay in the aligned two-Higgs-doublet model. The constraints from the electroweak precision observables, perturbative unitarity, vacuum stability and flavour physics are all taken into account along with the latest Large Hadron Collider searches for the charged Higgs. It is observed that a large enhancement of the branching ratio can be obtained in the limit where there is a large splitting between the charged and pseudo-scalar Higgs masses as well as for the largest allowed values of the alignment parameter $ς_u$. We find that the maximum possible branching ratio in the case of a large mass splitting between $m_{H^\pm}$ and $m_A$ is $\approx 10^{-3}$ for $m_{H^\pm} \in (200,700)$ GeV which is in the reach of the high luminosity phase of the Large Hadron Collider.
description: 18 pages, 14 figures
Deep Semi Supervised Generative Learning for Automated PD-L1 Tumor Cell Scoring on NSCLC Tissue Needle Biopsies
Creators: name: Kapil, Ansh
name: Meier, Armin
name: Zuraw, Aleksandra
name: Steele, Keith
name: Rebelatto, Marlon
name: Schmidt, Günter
name: Brieu, Nicolas
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The level of PD-L1 expression in immunohistochemistry (IHC) assays is a key biomarker for the identification of Non-Small-Cell-Lung-Cancer (NSCLC) patients that may respond to anti PD-1/PD-L1 treatments. The quantification of PD-L1 expression currently includes the visual estimation of a Tumor Cell (TC) score by a pathologist and consists of evaluating the ratio of PD-L1 positive and PD-L1 negative tumor cells. Known challenges like differences in positivity estimation around clinically relevant cut-offs and sub-optimal quality of samples makes visual scoring tedious and subjective, yielding a scoring variability between pathologists. In this work, we propose a novel deep learning solution that enables the first automated and objective scoring of PD-L1 expression in late stage NSCLC needle biopsies. To account for the low amount of tissue available in biopsy images and to restrict the amount of manual annotations necessary for training, we explore the use of semi-supervised approaches against standard fully supervised methods. We consolidate the manual annotations used for training as well the visual TC scores used for quantitative evaluation with multiple pathologists. Concordance measures computed on a set of slides unseen during training provide evidence that our automatic scoring method matches visual scoring on the considered dataset while ensuring repeatability and objectivity.
description: 10 pages, 7 figures, 3 tables, submited to Scientific Reports on 28 June 2018
A Lattice Formulation of Chiral Gauge Theories
Creators: name: Bodwin, Geoffrey T.
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a method for formulating gauge theories of chiral fermions in lattice field theory. The method makes use of a Wilson mass to remove doublers. Gauge invariance is then restored by modifying the theory in two ways: the magnitude of the fermion determinant is replaced with the square root of the determinant for a fermion with vector-like couplings to the gauge field; a double limit is taken, in which the lattice spacing associated with the fermion field is sent to zero before the lattice spacing associated with the gauge field. The method applies only to theories whose fermions are in an anomaly-free representation of the gauge group. We also present a related technique for computing matrix elements of operators involving fermion fields. Although the analyses of these methods are couched in weak-coupling perturbation theory, it is argued that the computational prescriptions are gauge invariant in the presence of a nonperturbative gauge-field configuration.
description: 69 pages in RevTeX plus 3 Postscript figures. Minor revisions, references added, typos fixed. Physical Review D version
Offloading of Users in NOMA-HetNet Using Repulsive Point Process
Creators: name: Swami, Pragya
name: Bhatia, Vimal
name: Vuppala, Satyanarayana
name: Ratnarajah, Tharmalingam
Publisher: name: arXiv
Year: 2018
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Ever increasing number of cellular users and their high data requirements, necessitates need for improvement in the present heterogeneous cellular networks (HetNet). Carrier sensing prevents base stations within a certain range of the transmitter from transmitting and hence aids in reducing the interference. Non-orthogonal multiple access (NOMA) has proven its superiority for the 5th generation (5G) networks. This work proposes a mathematical model for an improved HetNet with macro base station (MBS) and femto base station (FBS) tier. The FBS tier is equipped to support NOMA and carrier sensing for its transmissions. Offloading is performed for load balancing in HetNet where the macro users (MU) from congested MBS tier are offloaded to the FBS tier. The FBS tier pairs the offloaded MU (OMU) with an appropriate pairing user (PU) to perform NOMA. The performance of the OMU is studied under different channel conditions with respect to the available PU at the FBS and some useful observations are drawn. A decrease in outage probability by $74.04\%$ for cell center user (CCU) and $48.65\%$ for cell edge user (CEU) is observed for low density FBS. The outage probability decreases by $99.60\%$, for both the CCU and CEU, for high density FBS using the proposed carrier sensing in NOMA. The results are validated using simulations.
LBT/ARGOS adaptive optics observations of z$\sim 2$ lensed galaxies
Creators: name: Perna, M.
name: Curti, M.
name: Cresci, G.
name: Mannucci, F.
name: Rabien, S.
name: Grillo, C.
name: Belli, S.
name: Bonaglia, M.
name: Busoni, L.
name: Contursi, A.
name: Esposito, S.
name: Georgiev, I.
name: Lutz, D.
name: de Xivry, G. Orban
name: Zibetti, S.
name: Gaessler, W.
name: Mazzoni, T.
name: Borelli, J.
name: Rosensteiner, M.
name: Ziegler, J.
name: Buschkamp, P.
name: Rahmer, G.
name: Kulas, M.
name: Peter, D.
name: Raab, W.
name: Deysenroth, M.
name: Gemperlein, H.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Gravitationally lensed systems allow a detailed view of galaxies at high redshift. High spatial- and spectral-resolution measurements of arc-like structures can offer unique constraints on the physical and dynamical properties of high-z systems. We present near-infrared spectra centred on the gravitational arcs of six known z ~ 2 lensed star-forming galaxies of stellar masses of 10^9-10^11 Msun and star formation rate (SFR) in the range between 10 and 400 Msun/yr. Ground layer adaptive optics (AO)-assisted observations are obtained at the Large Binocular Telescope (LBT) with the LUCI spectrographs during the commissioning of the ARGOS facility. We used MOS masks with curved slits to follow the extended arched structures and study the diagnostic emission lines. Combining spatially resolved kinematic properties across the arc-like morphologies, emission line diagnostics and archival information, we distinguish between merging and rotationally supported systems, and reveal the possible presence of ejected gas. For galaxies that have evidence for outflows, we derive outflow energetics and mass-loading factors compatible with those observed for stellar winds in local and high-z galaxies. We also use flux ratio diagnostics to derive gas-phase metallicities. The low signal-to-noise ratio in the faint H$β$ and nitrogen lines allows us to derive an upper limit of ~ 0.15 dex for the spatial variations in metallicity along the slit for the lensed galaxy J1038. Analysed near-infrared spectra presented here represent the first scientific demonstration of performing AO-assisted multi-object spectroscopy with narrow curved-shape slits. The increased angular and spectral resolution, combined with the binocular operation mode with the 8.4-m-wide eyes of LBT, will allow the characterisation of kinematic and chemical properties of a large sample of galaxies at high-z in the near future.
description: 18 pages, 13 figures, accepted for publication in A&A
The highest-frequency kHz QPOs in neutron star low mass X-ray binaries
Creators: name: van Doesburgh, Marieke
name: van der Klis, Michiel
name: Morsink, Sharon
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We investigate the highest-frequency kHz QPOs previously detected with RXTE in six neutron star (NS) low mass X-ray binaries. We find that the highest-frequency kHz QPO detected in 4U 0614+09 has a 1267 Hz 3$σ$ confidence lower limit on its centroid frequency. This is the highest such limit reported to date, and of direct physical interest as it can be used to constrain QPO models and the supranuclear density equation of state (EoS). We compare our measured frequencies to maximum orbital frequencies predicted in full GR using models of rotating neutron stars with a number of different modern EoS and show that these can accommodate the observed QPO frequencies. Orbital motion constrained by NS and ISCO radii is therefore a viable explanation of these QPOs. In the most constraining case of 4U 0614+09 we find the NS mass must be M$
description: 10 pages, 7 figures. Accepted for publication in MNRAS
Synthesis and Ring-opening of NH-aziridine-2-carboxylates, and Preparation of Novel Pyrazolo[3,4-d]pyrimidines for Kinase-substrate Identification
Creators: name: Ferguson, Alexandra
Publisher: name: Imperial College London
Year: 2013

description: 1: The ring-opening of aziridine-2-carboxylates dominates their reactivity, providing diverse, biologically relevant compounds. Less is known about the chemistry of NH-aziridine-2-carboxylates, owing to multi-step preparation, and lack of N-functionality to aid ring-opening. Building on the recent disclosure of an NH-aziridination methodology applicable to enones, the substrate scope was expanded to include enoates. Aziridination provided access to NH-aziridine-2-carboxylates in a single step from readily available starting materials. Treatment of the resulting aziridine-2-carboxylates with nucleophiles proceeded with high regio- and stereoselectivity, providing access to natural and unnatural amino acid derivatives (Scheme 1).[Molecular structure diagrams appear here. To view, please open pdf attachment] Scheme 1: The synthesis and ring-opening of aziridine-2-carboxylates 2: Identification of kinase protein-substrate sets is crucial to further understand cellular processes, but is challenging with known methodology. Previous study had proposed a new methodology, incorporating two known strategies, bump-hole inhibition and photo-affinity labelling. Novel C3-aryl pyrazolo[3,4-d]pyrimidines were designed for the purpose (Fig. 1), although preparation of the compounds had proved challenging, with several key steps in the synthesis of analogues low-yielding and lengthy. A new synthetic route was developed, using hydrazone allylation to establish the α-tertamine functionality of the pyrazolo[3,4-d]pyrimidines. A late-stage oxidative cleavage was used to re-connect with the original synthetic strategy, to provide access to the C3-hydro analogues. Application of the revised route to the synthesis of the target compounds, using an alternative enol ether for C3-aromatic installation, provided access to two novel pyrazolo[3,4-d]pyrimidines for testing. [Molecular structure diagrams appear here. To view, please open pdf attachment] Fig. 1: C3-aryl pyrazolo[3,4-d]pyrimidines
Lectin attached affinity cryogels for amyloglucosidase adsorption
Creators: name: Bayraktaroğlu, Melis
name: Orhan, Hande
name: Evli, Sinem
name: Akgöl, Sinan
name: Uygun, Deniz Aktaş
name: Uygun, Murat
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
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: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Preparation of poly[ethylene glycol dimethacrylate (EGDMA)-glycidyl methacrylate (GMA)] cryogel and its usability for amyloglucosidase adsorption were investigated. Cryogels were prepared by cryocopolymerization technique and then functionalized by lectin concanavalin A (Con A). The synthesized cryogel was characterized by FTIR, SEM and EDX analysis and then used for adsorption of amyloglucosidase in a continuous flow system. The maximal amyloglucosidase adsorption efficiency of Con A attached cryogel was found to be as 30.50 mg/g cryogel. Con A modified cryogels were used repeatedly for 30 times without any significant decrease at the amyloglucosidase adsorption capacity. SDS-PAGE and activity studies confirmed that the desorbed amyloglucosidase was active and retained 90% of its initial activity after the adsorption/desorption processes.
Large-N expansion, conformal field theory and renormalization-group flows in three dimensions
Creators: name: Anselmi, D.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: I study a class of interacting conformal field theories and conformal windows in three dimensions, formulated using the Parisi large-N approach and a modified dimensional-regularization technique. Bosons are associated with composite operators and their propagators are dynamically generated by fermion bubbles. Renormalization-group flows between pairs of interacting fixed points satisfy a set of non-perturbative g 1/g dualities. There is an exact relation between the beta function and the anomalous dimension of the composite boson. Non-Abelian gauge fields have a non-renormalized and quantized gauge coupling, although no Chern-Simons term is present. A problem of the naive dimensional-regularization technique for these theories is uncovered and removed with a non-local, evanescent, non-renormalized kinetic term. The models are expected to be a fruitful arena for the study of odd-dimensional conformal field theory.
description: 15 pages, 3 figures; references added and some misprint corrected
Width of Long Colour Flux Tubes in Lattice Gauge Systems
Creators: name: Caselle, M.
name: Gliozzi, F.
name: Magnea, U.
name: Vinti, S.
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the confining phase of any gauge system the mean squared width of the colour flux tube joining a pair of quarks should grow logarithmically as a function of their distance, according to the effective string description of its infrared properties. New data on 3D Z_2 gauge theory, combined with high precision data on the interface physics of the 3D Ising model fit nicely this behaviour over a range of more than two orders of magnitude.
description: latex file of 20 pages plus 3 ps figures
Data Management Strategies for Relative Quality of Service in Virtualised Storage Systems
Creators: name: Franciosi, Felipe Mainieri
Publisher: name: Imperial College London
Year: 2012

description: The amount of data managed by organisations continues to grow relentlessly. Driven by the high costs of maintaining multiple local storage systems, there is a well established trend towards storage consolidation using multi-tier Virtualised Storage Systems (VSSs). At the same time, storage infrastructures are increasingly subject to stringent Quality of Service (QoS) demands. Within a VSS, it is challenging to match desired QoS with delivered QoS, considering the latter can vary dramatically both across and within tiers. Manual efforts to achieve this match require extensive and ongoing human intervention. Automated efforts are based on workload analysis, which ignores the business importance of infrequently accessed data. This thesis presents our design, implementation and evaluation of data maintenance strategies in an enhanced version of the popular Linux Extended 3 Filesystem which features support for the elegant specification of QoS metadata while maintaining compatibility with stock kernels. Users and applications specify QoS requirements using a chmod-like interface. System administrators are provided with a character device kernel interface that allows for profiling of the QoS delivered by the underlying storage. We propose a novel score-based metric, together with associated visualisation resources, to evaluate the degree of QoS matching achieved by any given data layout. We also design and implement new inode and datablock allocation and migration strategies which exploit this metric in seeking to match the QoS attributes set by users and/or applications on files and directories with the QoS actually delivered by each of the filesystem’s block groups. To create realistic test filesystems we have included QoS metadata support in the Impressions benchmarking framework. The effectiveness of the resulting data layout in terms of QoS matching is evaluated using a special kernel module that is capable of inspecting detailed filesystem data on-the-fly. We show that our implementations of the proposed inode and datablock allocation strategies are capable of dramatically improving data placement with respect to QoS requirements when compared to the default allocators.
Reactivity of the metalloligand [Pt2(µ-S)2(PPh3)4] toward tellurium(II) thiourea complexes: synthesis and structural characterization of the ditellurium(I) derivative [{Pt2(µ-S)2(PPh3)4}2Te2]2+
Creators: name: Ryland G. Fortney-Zirker
name: Henderson, William
name: Lane, Joseph R.
name: Tiekink, Edward R. T.
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Developmental Biology
subject: Cancer

description: Reaction of the platinum(II) sulfide metalloligand [Pt2(µ-S)2(PPh3)4] with the tellurium(II) source TeCl2(tu)2 (tu = thiourea) is dependent on reaction conditions employed. In the presence of added acid, the dominant species observed in the electrospray ionization (ESI) mass spectrum is the tetraplatinum species [{Pt2(µ-S)2(PPh3)4}2Te2]2+. This contains the Te22+ moiety and is related to the previously reported tellurium(I) dithiophosphinate analog [(Ph2PS2)2Te2]. However, in the absence of acid, considerable degradation of the {Pt2S2} metalloligand occurs as evidenced by the formation of the mononuclear complex [Pt{SC(NH2)NH}(PPh3)2]+ containing a deprotonated thiourea ligand, together with other thiourea-containing ions, identified by ESI MS. Likewise, attempted use of a fully substituted thiourea, viz. Me2NC(S)NMe2 (tmtu) in TeCl2(tmtu)2, also resulted in degradation of the {Pt2S2} core and detection of the known complex [(Ph3P)2PtCl{SC(NMe2)2}]+. The [{Pt2(µ-S)2(PPh3)4}2Te2]2+ cation was isolated with several anions, and unequivocal confirmation of the structure of the complex was obtained by an X-ray structure determination on the BF4- salt, which shows the presence of the Te22+ unit, with the Te–Te bond bridged by two {Pt2S2} metalloligands. Density functional theory was used to further probe the Te22+ bonding interactions in [{Pt2(μ-S)2(PPh3)4}2Te2]2+ and the previously reported [(Ph2PS2)2Te2].
Perfect Lattice Actions for Quarks and Gluons
Creators: name: Bietenholz, W.
name: Wiese, U. -J.
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use perturbation theory to construct perfect lattice actions for quarks and gluons. The renormalized trajectory for free massive quarks is identified by blocking directly from the continuum. We tune a parameter in the renormalization group transformation such that for 1-d configurations the perfect action reduces to the nearest neighbor Wilson fermion action. The fixed point action for free gluons is also obtained by blocking from the continuum. For 2-d configurations it reduces to the standard plaquette action. Classically perfect quark and gluon fields, quark-gluon composite operators and vector and axial vector currents are constructed as well. Also the quark-antiquark potential is derived from the classically perfect Polyakov loop. The quark-gluon and 3-gluon perfect vertex functions are determined to leading order in the gauge coupling. We also construct a new block factor $n$ renormalization group transformation for QCD that allows to extend our results beyond perturbation theory. For weak fields it leads to the same perfect action as blocking from the continuum. For arbitrarily strong 2-d Abelian gauge fields the Manton plaquette action is classically perfect for this transformation.
description: 37 pages, 8 figures included, uuencoded and tar compressed ps file. Correction in eq. (3.25) and minor stylistic improvements
title: Convention avec Janssen-Cilag
Creators: name: Leibowitch, Jacques (1942-2020)
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020

description: 1 fichier (2 pages). Convention numérisée.