cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Solution-processed metal oxide interlayers for hybrid organic:inorganic optoelectronic devices
Creators: name: Morbidoni, Maurizio
Publisher: name: Imperial College London
Year: 2017

description: Research on optoelectronic devices based on organic semiconductors has seen a steady rise in the last 20 years. Recently the incorporation of inorganic materials such as transition metal oxides as charge transport layers in these devices was found to be highly beneficial in terms of energy level alignment, stability and lifetime. Roll‐to‐roll processing of organic electronics and the use of flexible plastic substrates poses some limitations on the deposition of these oxides: they should be processed using solution‐based methods and not require high temperature post‐deposition treatments. In this work, thin films of four different transition metal oxides (MoO3‐x, V2O5‐x, WO3‐x, CoOx) were deposited using facile solution processes. The chemistry of the precursor solutions was carefully chosen to ensure the formation of the oxide of interest without the need for high temperature post‐deposition treatments (i.e. <150 °C). The oxides were incorporated in organic solar cells and light‐emitting diodes as hole transport layers and the effect of the solvo‐thermal processing conditions of the oxides on the behaviour of the devices was studied. All performance metrics were compared with those of poly(3,4‐ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS), a widely adopted hole transport material. Great improvements in both types of devices were recorded: in solar cells, the power conversion efficiency was up to 22% higher with a WO3‐x interlayer when compared with devices incorporating PEDOT:PSS; in light‐emitting diodes, the luminous efficacy was 24% higher using a MoO3‐x interlayer instead of a PEDOT:PSS one. In addition to this, the possibility of improving the characteristics and performances of PEDOT:PSS by blending it with MoO3‐x was explored. Different degrees of mixing were investigated, and the effect of increasing MoO3‐x percentage in the PEDOT:PSS/MoO3‐x hybrid on the behaviour of optoelectronic devices was studied. When compared to simple PEDOT:PSS, the hybrid produced an increase of 10% in the power conversion efficiency of solar cells and of 23% in the luminous efficacy of light‐emitting diodes. This thesis is divided into six chapters. Chapter 1 provides an insight into the underlying principles of device operation together with a review of the main characteristics of transition metal oxides and their incorporation in organic electronic devices. Moreover, a detailed analysis of different solution‐based methods that can be utilised for their deposition is given. Chapter 2 lists the different materials, recipes, and characterisation techniques used in this work. Chapters 3‐5 contain the results obtained in this research: Chapter 3 focuses on MoO3‐x and V2O5‐x oxides, Chapter 4 deals with the PEDOT:PSS/MoO3‐x hybrids and finally Chapter 5 contains results from WO3‐x and CoOx. Conclusions are laid out in Chapter 6, together with ideas and prompts for future expansions of this work.
Experimental evidence of the non-diffusive avalanche-like electron heat transport events and their dynamical interaction with the shear flow structure
Creators: name: Choi, Minjun J.
name: Jhang, Hogun
name: Kwon, J. -M.
name: Chung, J.
name: Woo, M.
name: Qi, L.
name: Ko, S. H.
name: Hahm, T. S.
name: Park, H. K.
name: Kim, H. -S.
name: Kang, J. S.
name: Lee, J.
name: Kim, M.
name: Yun, G. S.
name: team, the KSTAR
Publisher: name: arXiv
Year: 2018
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We present experimental observations suggesting that the non-diffusive avalanche-like events are a prevalent and universal process of the electron turbulent heat transport in tokamak core plasmas. They are observed in the low confinement mode and the weak internal transport barrier tokamak plasmas in the absence of magnetohydrodynamic instabilities. In addition, the electron temperature profile corrugation, which indicates the existence of the $E \times B$ shear flow layers, is clearly demonstrated as well as their dynamical interaction with the avalanche-like events. The measured width of the profile corrugation is around $45ρ_i$, which implies the mesoscale nature of the structure.
Correlation length in a generalized two-dimensional XY model
Creators: name: Nui, Duong Xuan
name: Tuan, Le
name: Kien, Nguyen Duc Trung
name: Huy, Pham Thanh
name: Dang, Hung T.
name: Viet, Dao Xuan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The measurements of the magnetic and nematic correlation lengths in a generalization of the two dimensional XY model on the square lattice are presented using classical Monte Carlo simulation. The full phase diagram is re-examined based on these correlation lengths, demonstrating their power in studying generalized XY models. The ratio between the correlation length and the lattice size has distinctive behaviors which can be used to distinguish different types of phase transition. More importantly, the magnetic correlation length give more insights into the tricritical region where the paramagnetic, nematic and quasi-long-range phases meet. It shows signatures for the intermediate region starting from the tricritical point, where the transition line is neither of the same physics as the Ising transition below nor the Berezinskii-Kosterlitz-Thouless transition far above the tricritical point.
description: 10 pages, 7 figures
Non-thermal Origin of the EUV and HEX Excess Emission of the Coma Cluster - the Nature of the Energetic Electrons
Creators: name: Ensslin, Torsten A.
name: Lieu, Richard
name: Biermann, Peter L.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The excess in extreme-ultraviolet (EUV) radiation and high energy X-rays (HEX) of Coma may be modeled by power law spectra. Their origin could be inverse Compton (IC) emission by relativistic electrons. The scattered photon fields can either be the CMB or the starlight of the galaxies within the cluster. If the EUV excess is due to CMB-IC, a strongly inhomogeneous magnetized intra- cluster medium (ICM) is required, in which the density of the relativistic electrons is anticorrelated with the magnetic fields. This could be understood if the electrons were accelerated during a major merger event within the last 2 Gyr and cooled afterwards in the inhomogeneous fields. If the EUV excess is due to starlight-IC, a population of relativistic, very low energy electrons has to be present, with a high energy density. In order to survive Coulomb losses, these electrons have to be separated from the cluster gas by confining magnetic fields. This could be remnant radio plasma from the epoch of violent quasar activity. The observed narrow radial profile of the EUV excess emission is due to the narrow photon distribution for this model. Both models favor very inhomogeneous magnetic field and relativistic electron distributions. IC models for the HEX excess seem to be implausible: CMB-IC leads to a mainly unmagnetized ICM, in contradiction to Faraday rotation measurements. Starlight scattering electrons would overproduce EUV photons due to simultaneously CMB-IC. We propose that the observed HEX excess is due to bremsstrahlung of a small high energy power-law tail of the mainly thermal ICM electron distribution. Such a tail is expected due to in-situ acceleration by turbulence.
description: 13 pages, LaTeX2e, 6 figures, accepted by A&A, final version, changes in the presentation, minor changes in the content, chi^2 plot for HEX emission is added
Stationary vortices in three-dimensional boundary layers: Non-parallelism, receptivity, and the effects of surface roughness
Creators: name: Butler, Adam James Owen
Publisher: name: Imperial College London
Year: 2017

description: In this thesis we investigate the early development of stationary crossflow vortices in a swept-wing boundary layer. We focus in particular on the effects of non-parallelism, receptivity to surface roughness, and weakly-nonlinear resonant interaction between vortices and roughness, studying these using a large-Reynolds-number asymptotic approach. We first consider the earliest development of the crossflow vortices. We show that non-parallelism plays a leading-order role in determining the growth rate. In this regime, the instability is aligned with the local wall shear at leading order and so has a marginally-separated triple-deck structure. Stationary crossflow vortices thus have a viscous and non-parallel genesis near the leading edge. If the `effective pressure minimum' occurs within this regime, the previous analysis must be regularised within a localised region around it. A new instability occurs. The flow maintains its three-tiered structure, but the pressure perturbation is no longer interactive between the decks. Downstream, the instability evolves into a Cowley, Hocking, & Tutty instability associated with a critical layer in the lower deck. We next consider the generation of stationary crossflow modes by surface roughness in the non-parallel regime. The flow responds differently to different Fourier spectral content of the roughness, giving the lower deck a two-part structure. We find that roughness with sharper edges generates stronger modes. Finally, we investigate weakly-nonlinear interactions between extant stationary modes and the perturbation induced by periodic roughness. These interactions modulate the eigenmode amplitudes, provided their wavenumbers satisfy certain relations, and include generalised Bragg Scattering and Triadic Resonance, as well as combinations of the two. For rather moderate roughness heights, this modulation can be significant compared to the leading-order growth rate, or even larger than it. The largest response occurs for modes near the upper branch. Through Triadic Resonance, two otherwise-independent eigenmodes become coupled, and the ratio of their amplitudes fixed.
Surface properties and the manufacturability of fine pharmaceutical powders
Creators: name: Dumitru, Ioana-Alina
Publisher: name: Imperial College London
Year: 2022

description: Surface chemistry is an important, yet underappreciated and poorly understood material characteristic within the pharmaceutical industry, which can affect handling and processing of powders. The intricate nature of solid surfaces makes surface chemistry a difficult variable to study and comprehend. The principal objectives of this work were fourfold: first, to successfully prepare a range of materials exhibiting different surface chemistries using a pharmaceutical grade crystalline powder, D-mannitol, and to quantify the surface chemistry alterations through XPS and ToF-SIMS; second, to use these materials to characterise the effect of surface chemistry on wettability behaviour and surface energy via contact angle and IGC experiments; third, to use this knowledge to understand the multi-faceted bulk powder flow behaviour; and forth, to relate surface chemistry, surface energy and powder flow behaviour to tabletability performance. Primarily, the silanisation reactions carried out were thus intended to only alter surface chemistry, without affecting other variables, in order to facilitate direct correlations between the powder behaviours studied. Surfaces rendering phenyl-, methyl- and fluoro- chemical functionalities were prepared and the hydroxyl- rich surface of the untreated material was used as a control. The successful silanisation was validated by XPS characterisation which revealed that upon silanisation, two C 1s peaks were observed, one corresponding to the carbons present in the substrate environment, and one corresponding to the environment generated by the silane reagent. The materials’ wettability behaviour and surface energy were linked to the surface hydrophobicity rendered by the different surface chemical functional groups being present on the surface of the powders. In this work, the importance of surface chemistry on powder flow performance has been determined for a range of crystalline powders exhibiting a vast number of surface chemistries. The dynamic, bulk and shear powder flow behaviours were linked to the surface chemistry of the four materials. Importantly, the electrostatic character of the fluorinated powder had an overriding effect on the powder flowability, emphasising that in certain conditions, surface chemistry is not the driving force for the performance of a material. Although surface chemistry effects have been recognised to affect powder flow behaviour as characterised by FT4 Powder Rheometer®, the proof-of-concept tabletability study revealed that when larger compression forces are applied to a powder, the surface properties, specifically surface chemistry, become a less important driving force for the tabletability performance. Instead, bulk powder properties become the dominant factors in producing powder compacts.
title: 03_0378
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Visualising and quantifying the RNA products of influenza A virus polymerase for insights into regulation and host restriction
Creators: name: Swann, Olivia
Publisher: name: Imperial College London
Year: 2023

description: Host restriction limits the emergence of pandemic strains from the influenza A virus avian reservoir. One important host range barrier is the RNA-dependent RNA polymerase protein (FluPol), which must adapt to undergo efficient replication within the mammalian nucleus. The restriction of avian FluPol in mammalian cells is believed to occur due to incompatibilities with mammalian orthologues of the host factor ANP32, which lack a 33 amino acid insertion relative to avian ANP32A. The quintessential mammalian-adapting mutation that overcomes this restriction is a single amino acid change from a glutamic acid to a lysine at position 627 on the PB2 protein of the FluPol (PB2 E627K). In this project, we set out to establish an approach for visualising the RNA products of FluPol within the nucleus. We developed a strand-specific RNA fluorescence in situ hybridisation (RNA FISH) approach, using the commercial RNAscope assay. Subsequently, this protocol was adapted for correlative light and electron microscopy (CLEM) in collaboration with the electron microscopy platform at the Crick Institute. Simultaneously, we used RNAscope and RT-qPCR to investigate the mechanism by which ANP32 supports viral replication, and functions in host restriction. We discovered that FluPol requires ANP32 proteins to support both steps of genome replication: cRNA and vRNA synthesis. However avian FluPol (PB2 627E) is only restricted in the second step, vRNA synthesis, in mammalian cells. This suggests ANP32 may have an additional role in supporting vRNA synthesis, and it is this activity that is specifically blocked when avian influenza infects mammalian cells. In summary, this study has established a strand-specific RNA FISH assay, suitable for dissecting the spatiotemporal details of IAV infection within the nucleus on a single-cell level. Moreover, this approach has been utilised, alongside RT-qPCR, to dissect the mechanism of the essential host factor ANP32. In combination, this has improved our understanding of the IAV polymerase, a major contributor to host restriction, and an important therapeutic target.
Henri-Joseph de Francqueville
Creators: name: Plouvain, Pierre-Antoine-Samuel-Joseph (1754-1832)
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2017
Subjects: Officier de justice d'Ancien Régime

description: Source: http://www.sudoc.fr/080675700
description: Coverage: Parlement de Flandre
title: ADCO, Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome IV, Cart. 188 (11 H 73), f. 0102v
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: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome IV, Archives départementales de la Côte-d'Or, Cart. 188 (11 H 73), f. 0102v, 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 IV, Archives départementales de la Côte-d'Or, Cart. 188 (11 H 73), f. 0102v, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: abbaye de Cîteaux
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
MOESM2 of Genome characterization of bile-isolated Shewanella algae ACCC
Creators: name: Tseng, Shu-Ying
name: Kwong-Chung Tung
name: Jan-Fang Cheng
name: Yi-Hsuan Lee
name: Zong-Yen Wu
name: Yu-Kai Hong
name: Chen, Shi-Yu
name: Huang, Yao-Ting
name: Po-Yu Liu
Publisher: name: figshare
Year: 2018
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Plant Biology

description: Additional file 2: Table S2. COG functional categories of S. algae ACCC genome.
title: ADCO, Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome IV, Cart. 188 (11 H 73), f. 0063r
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: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome IV, Archives départementales de la Côte-d'Or, Cart. 188 (11 H 73), f. 0063r, 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 IV, Archives départementales de la Côte-d'Or, Cart. 188 (11 H 73), f. 0063r, 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
title: ÐÐ»Ð¸ÐµÐ½Ñ-ÑÐµÑÐ²ÐµÑÐ½Ð¾Ðµ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ðµ Ð´Ð»Ñ Ð²Ð½ÐµÑÐµÐ½Ð¸Ñ, Ñ ÑÐ°Ð½ÐµÐ½Ð¸Ñ Ð¸ Ð¿ÑÐ¾ÑÐ¼Ð¾ÑÑÐ° Ð¼ÐµÐ´Ð¸ÑÐ¸Ð½ÑÐºÐ¸Ñ ÑÐ¿ÑÐ°Ð²Ð¾Ðº
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Client-server application for entering, storing and viewing medical certificates
Creators: name: Ð¡Ð°Ð²ÐµÐ»ÑÐµÐ², ÐÐ²Ð³ÐµÐ½Ð¸Ð¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2025
Subjects: java
ÐºÐ»Ð¸ÐµÐ½Ñ-ÑÐµÑÐ²ÐµÑÐ½Ð¾Ðµ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ðµ
apache tomcat
postgresql
client-server application

description: Ð¢ÐµÐ¼Ð° Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ: ÐÐ»Ð¸ÐµÐ½Ñ-ÑÐµÑÐ²ÐµÑÐ½Ð¾Ðµ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ðµ Ð´Ð»Ñ Ð²Ð½ÐµÑÐµÐ½Ð¸Ñ, ÑÑÐ°Ð½ÐµÐ½Ð¸Ñ Ð¸ Ð¿ÑÐ¾ÑÐ¼Ð¾ÑÑÐ° Ð¼ÐµÐ´Ð¸ÑÐ¸Ð½ÑÐºÐ¸Ñ ÑÐ¿ÑÐ°Ð²Ð¾Ðº. Ð ÑÐ°Ð¼ÐºÐ°Ñ Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ»Ð° Ð¿Ð¾ÑÑÐ°Ð²Ð»ÐµÐ½Ð° Ð·Ð°Ð´Ð°ÑÐ° Ð² ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐµ Ð²ÐµÐ± Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ Ð´Ð»Ñ Ð²Ð½ÐµÑÐµÐ½Ð¸Ñ, Ð¿Ð¾Ð¸ÑÐºÐ°, ÑÑÐ°Ð½ÐµÐ½Ð¸Ñ Ð¸ Ð¿ÑÐ¾ÑÐ¼Ð¾ÑÑÐ° Ð¼ÐµÐ´Ð¸ÑÐ¸Ð½ÑÐºÐ¸Ñ Ð±Ð»Ð°Ð½ÐºÐ¾Ð². ÐÐ»Ñ Ð´Ð¾ÑÑÐ¸Ð¶ÐµÐ½Ð¸Ñ Ð¿Ð¾ÑÑÐ°Ð²Ð»ÐµÐ½Ð½Ð¾Ð¹ Ð·Ð°Ð´Ð°ÑÐ¸ Ð±ÑÐ»Ð¾ ÑÐµÐ°Ð»Ð¸Ð·Ð¾Ð²Ð°Ð½Ð¾: 1. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ñ ÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð¸Ñ Ðº ÑÐ¸ÑÑÐµÐ¼Ðµ; 2. ÐÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÑÑÑÐºÑÑÑÑ ÑÐ¸ÑÑÐµÐ¼Ñ; 3. Ð¡Ð¾Ð·Ð´Ð°Ð½Ð¸Ðµ Ð´Ð¸Ð·Ð°Ð¹Ð½Ð° ÑÐ¸ÑÑÐµÐ¼Ñ; 4. Ð¤ÑÐ½ÐºÑÐ¸Ð¾Ð½Ð°Ð» ÑÐ¸ÑÑÐµÐ¼Ñ. Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ ÑÐ·ÑÐºÐ° Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Java, ÑÐµÑÐ²ÐµÑÐ½Ð¾Ð³Ð¾ ÐÐ Apache Tomcat Ð¸ Ð±Ð°Ð·Ñ Ð´Ð°Ð½Ð½ÑÑ PostgreSQL ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð¾ ÐºÐ»Ð¸ÐµÐ½Ñ-ÑÐµÑÐ²ÐµÑÐ½Ð¾Ðµ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ðµ, Ð¿Ð¾Ð·Ð²Ð¾Ð»ÑÑÑÐµÐµ Ð·Ð°Ð½Ð¾ÑÐ¸ÑÑ, Ð¿ÑÐ¾ÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÑÑ Ð¸ Ð¸Ð·Ð¼ÐµÐ½ÑÑÑ Ð¼ÐµÐ´Ð¸ÑÐ¸Ð½ÑÐºÐ¸Ðµ ÑÐ¿ÑÐ°Ð²ÐºÐ¸. ÐÐµÐ´Ð¸ÑÐ¸Ð½ÑÐºÐ¸Ðµ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð²Ð½Ð¾ÑÑÑ ÑÐ¿ÑÐ°Ð²ÐºÐ¸, Ð° Ð¸ÑÐ¿Ð¾Ð»Ð½Ð¸ÑÐµÐ»ÑÐ½ÑÐµ Ð¾ÑÐ³Ð°Ð½Ñ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²ÐµÐ½Ð½Ð¾Ð¹ Ð²Ð»Ð°ÑÑÐ¸ Ð¼Ð¾Ð³ÑÑ Ð¸Ñ Ð¿ÑÐ¾ÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÑÑ.
description: The subject of the graduate qualification work is Â«Client-server application for entering, storing and viewing medical certificatesÂ». Within the framework of the final qualification work the task was set in the development of a web application for entering, searching, storing and viewing medical forms. To achieve the task was realized: 1. Requirements to the system were developed; 2. Designing the structure of the system; 3. Creation of the system design; 4. System functionality. As a result, using Java programming language, Apache Tomcat server software and PostgreSQL database, a client-server application was developed that allows entering, viewing and modifying medical certificates. Medical organizations enter certificates, and executive state authorities can view them.
A quick guide for student-driven community genome annotation
Creators: name: Hosmani, Prashant S.
name: Shippy, Teresa
name: Miller, Sherry
name: Benoit, Joshua B.
name: Munoz-Torres, Monica
name: Flores, Mirella
name: Mueller, Lukas A.
name: Wiersma-Koch, Helen
name: D'elia, Tom
name: Brown, Susan J.
name: Saha, Surya
Publisher: name: arXiv
Year: 2018
Subjects: subject: Genomics (q-bio.GN)
subject: FOS: Biological sciences

description: High quality gene models are necessary to expand the molecular and genetic tools available for a target organism, but these are available for only a handful of model organisms that have undergone extensive curation and experimental validation over the course of many years. The majority of gene models present in biological databases today have been identified in draft genome assemblies using automated annotation pipelines that are frequently based on orthologs from distantly related model organisms. Manual curation is time consuming and often requires substantial expertise, but is instrumental in improving gene model structure and identification. Manual annotation may seem to be a daunting and cost-prohibitive task for small research communities but involving undergraduates in community genome annotation consortiums can be mutually beneficial for both education and improved genomic resources. We outline a workflow for efficient manual annotation driven by a team of primarily undergraduate annotators. This model can be scaled to large teams and includes quality control processes through incremental evaluation. Moreover, it gives students an opportunity to increase their understanding of genome biology and to participate in scientific research in collaboration with peers and senior researchers at multiple institutions.
Falco apivorus Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Falconiformes
Falconidae
Falco
Falco apivorus

description: Falco apivorus [spec. nov.]
F. cera nigra, pedibus seminudis flavis, capite cinereo, caudae fascia cinerea apice albo. Fn. svec. 66.
Buteo apivorus s. vespivorus. Will. ornith. 38. t. 3. Raj. av. 16.
Habitat in Europa; victitans Muribus, Lacertis, Insectis.
description: Published as part of Linnaeus, Carolus, 1758, Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Stockholm :Laurentius Salvius on page 91, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
The Statistics of Nearly On-Axis Gravitational Lensing Events
Creators: name: Wang, Yun
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A small volume of space, nearly on-axis behind a gravitational lens with respect to a given source, will receive a greatly increased radiation flux. In the idealized case of a point mass lens acting on a point source in complete isolation, the volume will approach zero only as the flux tends to infinity; in fact, the volume weighted rms flux is divergent. In realistic cases, finite source size and the effects of other gravitational deflections (i.e., non-zero shear) limit the maximum flux and considerably complicate the physics, but very large fluxes are still produced in small volumes. We consider the physics and statistics of these Extreme Gravitational Lensing Events (EGLE) and present an initial examination of their possible astrophysical effects for various known and putative populations of lensing objects and sources, with particular attention to the case in which finite source size is important but shear is not.
description: uuencoded compressed postscript file, 6 pages. Normal postscript file available at http://fnas08.fnal.gov/. To appear in Proceedings of IAU Symposium 173: Astrophysical Applications of Gravitational Lensing (Melbourne, Australia, July 9-14, 1995), edited by C.S. Kochanek and J.N. Hewitt
Using and reusing coherence to realize quantum processes
Creators: name: Díaz, María García
name: Fang, Kun
name: Wang, Xin
name: Rosati, Matteo
name: Skotiniotis, Michalis
name: Calsamiglia, John
name: Winter, Andreas
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Coherent superposition is a key feature of quantum mechanics that underlies the advantage of quantum technologies over their classical counterparts. Recently, coherence has been recast as a resource theory in an attempt to identify and quantify it in an operationally well-defined manner. Here we study how the coherence present in a state can be used to implement a quantum channel via incoherent operations and, in turn, to assess its degree of coherence. We introduce the robustness of coherence of a quantum channel---which reduces to the homonymous measure for states when computed on constant-output channels---and prove that: i) it quantifies the minimal rank of a maximally coherent state required to implement the channel; ii) its logarithm quantifies the amortized cost of implementing the channel provided some coherence is recovered at the output; iii) its logarithm also quantifies the zero-error asymptotic cost of implementation of many independent copies of a channel. We also consider the generalized problem of imperfect implementation with arbitrary resource states. Using the robustness of coherence, we find that in general a quantum channel can be implemented without employing a maximally coherent resource state. In fact, we prove that \textit{every} pure coherent state in dimension larger than $2$, however weakly so, turns out to be a valuable resource to implement \textit{some} coherent unitary channel. We illustrate our findings for the case of single-qubit unitary channels.
description: 8 pages (main text) + 9 pages (supplementary material). Comments welcome. v2: minor edits to the introduction. v3: version accepted for publication in Quantum
VARIETY AND EFFICIENCY: MONOPOLISTIC COMPETITION WITH NONLINEAR PRICE SCHEDULES
Creators: name: Spulber, Daniel
name: Spulber, Daniel
Publisher: name: Unknown
Year: 1986
Subjects: Industrial Organization
Research Methods/ Statistical Methods

description: A market with free entry monopolistic competition is studied. Nonlinear pricing is shown to be the Bertrand-Nash equilibrium strategy for firms. Given small per capita fixed costs, the nonlinear pricing equilibrium approaches the perfectly competitive equilibrium with marginal cost pricing. Nonlinear pricing is associated with greater product variety than linear pricing. Increased variety leads to efficient pricing.
Search for supersymmetric partners of electrons and muons in proton-proton collisions at $\sqrt{s} =$ 13 TeV
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search for direct production of the supersymmetric (SUSY) partners of electrons or muons is presented in final states with two opposite-charge, same-flavor leptons (electrons and muons), no jets, and large missing transverse momentum. The data sample corresponds to an integrated luminosity of 35.9 fb$^{-1}$ of proton-proton collisions at $\sqrt{s} =$ 13 TeV, collected with the CMS detector at the LHC in 2016. The search uses the $m_{\mathrm{T}2}$ variable, which generalizes the transverse mass for systems with two invisible objects and provides a discrimination against standard model backgrounds containing W bosons. The observed yields are consistent with the expectations from the standard model. The search is interpreted in the context of simplified SUSY models and probes slepton masses up to approximately 290, 400, and 450 GeV, assuming right-handed only, left-handed only, and both right- and left-handed sleptons (mass degenerate selectrons and smuons), and a massless lightest supersymmetric particle. Limits are also set on selectrons and smuons separately. These limits show an improvement on the existing limits of approximately 150 GeV.
description: Replaced with the published version. Added the journal reference. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/SUS-17-009 (CMS Public Pages)
Surrogate-based optimisation of process systems to recover resources from wastewater
Creators: name: Durkin, Alex
Publisher: name: Imperial College London
Year: 2023

description: Meeting the needs of a growing population calls for a divergence from linear production systems which are exacerbating finite resource depletion and environmentally degrading emissions. These linear production systems have resulted in the human-driven perturbation of the Earth’s natural biogeochemical cycles and the transgression of environmentally safe operating limits. One solution that can alleviate environmental issues associated with both resource stress and harmful emissions is resource recovery from waste. Specifically, the recovery of resources from food and beverage processing wastewater (FPWW) offers a synergistic solution to alleviate the environmental issues largely associated to the traditional food production system. Research on resource recovery from FPWW typically focuses on technologies to recover specific resources without considering integrative process systems to recover multiple resources whilst simultaneously satisfying regulations on final effluent quality. This thesis thereby contributes to the literature by bringing a “systems thinking” approach to resource recovery from FPWW by harnessing surrogate modelling and mathematical optimisation techniques to highlight holistic process system designs. A surrogate-based process synthesis methodology is thereby presented to harness high-fidelity data from black box process simulations, embedding first principles models, within a superstructure optimisation framework. A suite of modelling tools is developed to advance the capabilities of the methodology developments and facilitate tailored derivative-free optimisation solutions widely applicable to black box optimisation problems. The optimisation of a process system to recover energy and nutrients from a microbial protein production wastewater reveals significant scope to reduce the environmental impacts of food production systems. A further application to the recovery of resources from a brewery wastewater demonstrates the capabilities of the modelling methodology to highlight optimal processes to recover carbon, nitrogen, and phosphorous resources whilst also accounting for uncertainties inherent to wastewater systems.
title: ÐÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ðµ Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ Ð¼Ð¾Ð´ÐµÐ»Ð¸ ÑÐ¸ÐºÐ»Ð° ÑÑÐµÐ½Ð´Ð° Ð´Ð»Ñ Ð¿ÐµÑÐµÑ Ð¾Ð´Ð° Ð¾Ñ Ð±ÑÑÑÑÐ¾Ð¹ Ð¼Ð¾Ð´Ñ Ðº ÑÑÑÐ¾Ð¹ÑÐ¸Ð²ÑÐ¼ ÑÑÐµÐ½Ð´Ð°Ð¼
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Application of the trend cycle information model for the transition from fast fashion to sustainable trends
Creators: name: Ð¡Ð°ÑÑÑÐµÐ²Ð°, ÐÐ»Ð¸Ð·Ð°Ð²ÐµÑÐ°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2025
Subjects: ÑÐ¸ÐºÐ» ÑÑÐµÐ½Ð´Ð°
Ð±ÑÑÑÑÐ°Ñ Ð¼Ð¾Ð´Ð°
ÑÑÑÐ¾Ð¹ÑÐ¸Ð²Ð¾Ðµ ÑÐ°Ð·Ð²Ð¸ÑÐ¸Ðµ
Ð¼Ð¾Ð´ÐµÐ»Ñ sir
trend cycle
fast fashion
sustainable development
sir model

description: ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ¸ÐºÐ»Ð° ÑÑÐµÐ½Ð´Ð° Ð¸ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐµ Ð¼ÐµÑÐ¾Ð´Ð¸ÐºÐ¸ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ ÑÐ¸ÐºÐ»Ð¾Ð¼ ÑÑÐµÐ½Ð´Ð° Ð´Ð»Ñ ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÑÑÐ¾Ð¹ÑÐ¸Ð²Ð¾Ð³Ð¾ ÑÑÐµÐ½Ð´Ð°. ÐÐ°Ð´Ð°ÑÐ¸, ÐºÐ¾ÑÐ¾ÑÑÐµ ÑÐµÑÐ°Ð»Ð¸ÑÑ Ð² ÑÐ¾Ð´Ðµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ:Â  1) Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÑÑÐµÑÑÐ²ÑÑÑÐ¸Ñ Ð¼Ð¾Ð´ÐµÐ»ÐµÐ¹ ÑÐ¸ÐºÐ»Ð° ÑÑÐµÐ½Ð´Ð°,Â  2) ÑÐ¸Ð½ÑÐµÐ· Ð¼Ð°ÑÐµÐ¼Ð°ÑÐ¸ÑÐµÑÐºÐ¾Ð¹ Ð¼Ð¾Ð´ÐµÐ»Ð¸ ÑÐ¸ÐºÐ»Ð° ÑÑÐµÐ½Ð´Ð°, 3) ÑÐ¸Ð½ÑÐµÐ· Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ Ð¼Ð¾Ð´ÐµÐ»Ð¸ ÑÐ¸ÐºÐ»Ð° ÑÑÐµÐ½Ð´Ð°, 4) ÑÐµÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ Ð¼Ð¾Ð´ÐµÐ»Ð¸ ÑÐ¸ÐºÐ»Ð° ÑÑÐµÐ½Ð´Ð°.
description: This work is devoted to the study of the trend cycle and the development of a methodology for managing the trend cycle to form a stable trend. The research set the following goals: 1) research of existing trend cycle models,Â  2) synthesis of a mathematical model of the trend cycle, 3) synthesis of the information model of the trend cycle, 4) testing the information model of the trend cycle.
MultiTex RCT - multifaceted intervention package for protection against cotton dust exposure among textile workers – a cluster randomised controlled trial
Creators: name: Nafees, Asaad
Publisher: name: Imperial College London
Year: 2022

description: In the Pakistani textile industry, the prevalence of workplace respiratory illness, including byssinosis, is high. This study determined the effectiveness of a multifaceted intervention package in reducing dust levels in cotton mills, decreasing the frequency of respiratory symptoms among cotton textile workers, and improving their lung function. I undertook a cluster-randomised controlled trial at 38 textile mills (n=2031 workers at baseline) in Karachi. The intervention comprised: training in occupational health for workers and managers backed by regular refresher sessions; the formation of workplace committees to draw up, agree and promote a health and safety plan that included wet mopping, safe disposal of cotton dust, and the use of simple face masks, as well as further publicity about the risks from cotton dust; and provision of adequate supplies of face masks to support the health and safety plan. Participating mills were randomised to intervention and control arms following a baseline survey. The impact of the intervention was determined through follow-up surveys conducted at 3, 12 and 18 months. The data collected included spirometry, questionnaire-based interviews, and cotton dust measurements. At the end of the trial, in the sub-group (n=616; 30%) of workers that never left the study, I found an overall improvement in the composite outcome (57% to 44%), partly attributed to chest tightness; minor decline in lung function (FEV1-predicted: 76% to 75%) and personal dust levels (610 to 525 µg/m3). In the adjusted models (n=807; 40%), workers in the intervention arm were more likely to report an improvement in the composite outcome (OR: 1.58; 95% CI: 1.06-2.37) and lung function (β: 1.31%; 95% CI: 0.04-2.57). I found the intervention to be effective in improving respiratory health of cotton textile workers. These findings pave the way for scaling-up of such simple and feasible interventions in low- and middle-income countries.
Data-Driven Precision Luminosity Measurements with Z Bosons at the LHC and HL-LHC
Creators: name: Salfeld-Nebgen, Jakob
name: Marlow, Daniel
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A method to measure integrated luminosities at the LHC using Z bosons without theoretical cross section input is discussed. The main uncertainties and the prospects for precision luminosity measurements using this method are outlined.
description: Minor revision
MOESM1 of Genome characterization of bile-isolated Shewanella algae ACCC
Creators: name: Tseng, Shu-Ying
name: Kwong-Chung Tung
name: Jan-Fang Cheng
name: Yi-Hsuan Lee
name: Zong-Yen Wu
name: Yu-Kai Hong
name: Chen, Shi-Yu
name: Huang, Yao-Ting
name: Po-Yu Liu
Publisher: name: figshare
Year: 2018
Subjects: subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plant Biology

description: Additional file 1: Table S1. General features of S. algae ACCC genome.
Falco aeruginosus Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Falconiformes
Falconidae
Falco
Falco aeruginosus

description: Falco aeruginosus [spec. nov.]
F. cera fusca, corpore griseo, vertice gula axillis pedibusque luteis.
Falco cera luteo-viridi, pedibus luteis, corpore ferrugineo, vertice fulvo. Fn. svec. 63.
Milvus aeruginosus. Will. orn. 42. t. 7. Raj. av. 17. Alb. av. 1. p. 3. t. 3.
Habitat in Europa.
description: Published as part of Linnaeus, Carolus, 1758, Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Stockholm :Laurentius Salvius on page 91, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Aberrant expression of homing markers on dendritic cells drives inflammation in Crohn's disease
Creators: name: Peake, Simon Thomas Charles
Publisher: name: Imperial College London
Year: 2015

description: CD is a chronic transmural inflammatory disease of the gut. The aetiology of CD is unknown, but is likely to result from dysregulated innate immune responses to gut microbiota leading to over activation of the acquired immune system in a genetically susceptible host. Inflammation occurs anywhere from mouth to anus, in addition to extra-intestinal sites. This compartmentalisation of the inflammatory process is linked to tissue-specific innate immune mechanisms and immune cell homing. DCs play a key role in discriminating between gut commensal microbiota and harmful pathogens, directing T-cell polarisation and directing immune cells to specific anatomical locations by expressing and imprinting homing markers. Improved understanding of the immunopathogenic basis of inflammation in CD has led to the development of more efficacious medical therapy, in particular, targeting the pro-inflammatory cytokine TNFα. The precise mechanism of action of TNFα blockade in CD remains unclear. We found homing marker expression on circulating DCs in patients with CD closely correlates with anatomical phenotype of inflammation. When immune cells are cultured with IFX we found homing marker expression on monocytes and T-cells changed from a gut-homing to skin-homing phenotype., perhaps explaining the phenomenon of ‘paradoxical inflammation’ seen in some patients treated with anti-TNFα therapy. Blood-enriched DCs isolated from patients with active CD had higher levels of pro-inflammatory cytokines in culture medium. IFX culture resulted in reduced concentrations of pro-inflammatory cytokines and decreased gut-homing marker expression. Finally, we examined the functional effects of IFX-pre-treated-LDCs on T-cells. There was a dose-dependent reduction in LDC stimulatory capacity with increasing concentrations of IFX, but no changes in T-cell phenotype. The effect of IFX on the immune system goes beyond TNFα blockade alone. This work has identified several mechanisms by which IFX interacts with immune cells in vitro, which may result in changes to CD inflammatory process in vivo.
Constraints on the Formation and Evolution of Circumstellar Disks in Rotating Magnetized Cloud Cores
Creators: name: Basu, Shantanu
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use magnetic collapse models to place some constraints on the formation and angular momentum evolution of circumstellar disks which are embedded in magnetized cloud cores. Previous models have shown that the early evolution of a magnetized cloud core is governed by ambipolar diffusion and magnetic braking, and that the core takes the form of a nonequilibrium flattened envelope which ultimately collapses dynamically to form a protostar. In this paper, we focus on the inner centrifugally-supported disk, which is formed only after a central protostar exists, and grows by dynamical accretion from the flattened envelope. We estimate a centrifugal radius for the collapse of mass shells within a rotating, magnetized cloud core. The centrifugal radius of the inner disk is related to its mass through the two important parameters characterizing the background medium: the background rotation rate $\Omb$ and the background magnetic field strength $\Bref$. We also revisit the issue of how rapidly mass is deposited onto the disk (the mass accretion rate) and use several recent models to comment upon the likely outcome in magnetized cores. Our model predicts that a significant centrifugal disk (much larger than a stellar radius) will be present in the very early (Class 0) stage of protostellar evolution. Additionally, we derive an upper limit for the disk radius as it evolves due to internal torques, under the assumption that the star-disk system conserves its mass and angular momentum even while most of the mass is transferred to a central star.
description: 23 pages, 1 figure, aastex, to appear in the Astrophysical Journal (10 Dec 1998)
Velocity statistics for point vortices in the local α-models of turbulence
Creators: name: Conti, Giovanni
name: Badin, Gualtiero
Publisher: name: arXiv
Year: 2018
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The velocity fluctuations for point vortex models are studied for the α-turbulence equations, which are characterized by a fractional Laplacian relation between active scalar and the streamfunction. In particular, we focus on the local dynamics regime. The local dynamics differ from the well-studied case of 2D turbulence as it allows to consider the true thermodynamic limit. This limit is not defined for 2D turbulence. We show an analytical form of the probability density distribution of the velocity fluctuations for different degrees of locality. The central region of the distribution is not Gaussian, in contrast to the case of 2D turbulence, but can be approximated with a Gaussian function in the small velocity limit. The tails of the distribution exhibit a power law behavior and self similarity in terms of the density variable. Due to the thermodynamic limit, both the Gaussian approximation for the core and the steepness of the tails are independent on the number of point vortices, but depend on the α-model. We also show the connection between the velocity statistics for point vortices uniformly distributed, in the context of the α-model in classical turbulence, with the velocity statistics for point vortices non-uniformly distributed. Since the exponent of the power law depends just on α, we test the power law approximation obtained with the point vortex approximation, by simulating full turbulent fields for different values of α and we compute the correspondent probability density distribution for the absolute value of the velocity field. These results suggest that the local nature of the turbulent fluctuations in the ocean or in the atmosphere might be deduced from the shape of the tails of the probability density functions.
description: 6 figures
The Wiener-Filtered COBE DMR Data and Predictions for the Tenerife Experiment
Creators: name: Bunn, Emory F.
name: Hoffman, Yehuda
name: Silk, Joseph
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We apply a Wiener filter to the two-year COBE DMR data. The resulting sky map has significantly reduced noise levels compared to the raw data: the most prominent hot and cold spots are significant at the 4-sigma level. Furthermore, the entire covariance matrix of the errors in the filtered sky map is known, and it is therefore possible to make constrained realizations of the microwave sky with the correct a posteriori probability distribution. The filtered DMR sky map is used to make predictions for the Tenerife experiment. Two prominent features are predicted in a region of the sky not yet analyzed by the Tenerife group. The presence of these features is a robust prediction of the standard cosmological paradigm; if these features are not observed, some of our fundamental assumptions must be incorrect.
description: 15 pages of uuencoded compressed PostScript. A PostScript file including figures is available at ftp://pac2.berkeley.edu/pub/bunn/wienerten/