cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Polarization Independent Atomic Prism filter for removing Amplified Spontaneous Emission
Creators: name: Cohen, Raphael David
name: Mullarkey, Christopher A.
name: Howell, John C.
name: Katz, Nadav
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We create an optical frequency, polarization independent, narrow band-pass filter of 1.3 GHz (3 dB bandwidth), using the steep dispersion near the Rubidium D1 atomic transitions within a prism-shaped vapor cell. This enables us to clean the amplified spontaneous emission from a laser by more than 3 orders of magnitude. Such a filter could find uses in fields such as quantum information processing and Raman spectroscopy.
description: 5 pages, 5 figures
Oral history interview with Peter Piscitelli 1994
Publisher: name: Columbia University
Year: 2019
Subjects: Lobbyists

description: Reminiscences of the Edward I. Koch [Koch] administration: initial contact with Koch as a legislative representative in Albany, NY, 1978; reflections on the 1977 mayoral election; changes within the Koch administration; relationship of Koch to presidential administrations; repercussions of Koch's Playboy interview on his 1982 democratic gubernatorial primary campaign; reflections on Koch's leadership qualities; Piscitelli's responsibilities as director of intergovernmental relations, involvement with the Westway project and other city development projects.
Global Stabilization of Antipodal Points on n-Sphere with Application to Attitude Tracking
Creators: name: Tong, Xin
name: Cheng, Shing Shin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Existing approaches to robust global asymptotic stabilization of a pair of antipodal points on unit $n$-sphere $\mathbb{S}^n$ typically involve the non-centrally synergistic hybrid controllers for attitude tracking on unit quaternion space. However, when switching faults occur due to parameter errors, the non-centrally synergistic property can lead to the unwinding problem or in some cases, destabilize the desired set. In this work, a hybrid controller is first proposed based on a novel centrally synergistic family of potential functions on $\mathbb{S}^n$, which is generated from a basic potential function through angular warping. The synergistic parameter can be explicitly expressed if the warping angle has a positive lower bound at the undesired critical points of the family. Next, the proposed approach induces a new quaternion-based controller for global attitude tracking. It has three advantageous features over existing synergistic designs: 1) it is consistent, i.e., free from the ambiguity of unit quaternion representation; 2) it is switching-fault-tolerant, i.e., the desired closed-loop equilibria remain asymptotically stable even when the switching mechanism does not work; 3) it relaxes the assumption on the parameter of the basic potential function in literature. Comprehensive simulation confirms the high robustness of the proposed centrally synergistic approach compared with existing non-centrally synergistic approaches.
description: 8 pages
Oral history interview with Peter Santangelo, 1982
Publisher: name: Columbia University
Year: 2020
Subjects: Police
Drug control--History--20th century.--United States
Drug dealers--United States
Drug traffic--History--20th century.--United States
Crime--Connecticut

description: In this interview, Peter Santangelo discusses his career as a police officer in Connecticut, as well as his time serving in the Navy. He discusses how he first witnessed drugs through the Navy when he was stationed in Okinawa, Japan in the late 1960s. He describes how the affect of his friend and fellow soldier changed as he became increasingly involved with drugs. He describes approaching the Clinton Police Department with no experience, and proposing that he work as an undercover cop to catch drug dealers. He discusses working with the South Central Region Crime Squad and the Eastern Regional Crime Squad. He describes his training to be an undercover cop, including how he dressed, how he spoke, and how he put track marks on his arm to blend in. He describes a typical drug user in Old Saybrook in the early in 1970s in terms of age, sex, and family background. He describes in detail his first time purchasing drugs undercover. He discusses his bust of a prominent heroin dealer named Big Lucky. He discusses working in many different cities in Connecticut including New London, Norwich, and Storrs. He discusses his transition from being an undercover cop to a patrol cop after a year and a half of undercover work
Discovery of the 198 s X-ray Pulsar GRO J2058+42
Creators: name: Wilson, Colleen A.
name: Finger, Mark H.
name: Harmon, B. Alan
name: Chakrabarty, Deepto
name: Strohmayer, Tod
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: GRO J2058+42, a transient 198 second x-ray pulsar, was discovered by the Burst and Transient Source Experiment (BATSE) on the Compton Gamma-Ray Observatory (CGRO), during a "giant" outburst in 1995 September-October. The total flux peaked at about 300 mCrab (20-50 keV) as measured by Earth occultation. The pulse period decreased from 198 s to 196 s during the 46-day outburst. The pulse shape evolved over the course of the outburst and exhibited energy dependent variations. BATSE observed five additional weak outbursts from GRO J2058+42, each with two week duration and peak pulsed flux of about 15 mCrab (20-50 keV), that were spaced by about 110 days. An observation of the 1996 November outburst by the Rossi X-ray Timing Explorer (RXTE) Proportional Counter Array (PCA) localized the source to within a 4\arcmin radius error circle (90 % confidence) centered on R.A. = 20h 59m.0, Decl. = 41 deg 43 arcmin (J2000). Additional shorter outbursts with peak pulsed fluxes of about 8 mCrab were detected by BATSE halfway between the first four 15 mCrab outbursts. The RXTE All-Sky Monitor detected all 8 weak outbursts with approximately equal durations and intensities. GRO J2058+42 is most likely a Be/X-ray binary that appears to outburst at periastron and apastron. No optical counterpart has been identified to date and no x-ray source was present in the error circle in archival ROSAT observations.
description: 19 pages including 10 figures. Accepted for publication in the Astrophysical Journal
Vienne, Österreichische Nationalbibliothek, *38.F.46.(Vol.1), fol. 108r-128v, transcription normalisée (Gregorius Digital E3-1)
Creators: name: Andersen, Peter
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2025

description: Ce document Word est une transcription normalisée de l’exemplaire Vienne, Österreichische Nationalbibliothek, *38.F.46.(Vol.1), fol. 108r-128v, de l’édition de la comédie « El marido de su madre » de Juan de Matos Fragoso, Madrid, Julián de Paredes, 1658, contient le récit du Bon Pécheur et est édité dans le cadre du projet Gregorius Digital sous le sigle E3-1 (dir. Peter Andersen – ARCHE UMR 3400 – Université de Strasbourg)
title: 03_0311
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/
Nonlinear Self-Duality and Supersymmetry
Creators: name: Kuzenko, Sergei M.
name: Theisen, Stefan
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review self-duality of nonlinear electrodynamics and its extension to several Abelian gauge fields coupled to scalars. We then describe self-duality in supersymmetric models, both N = 1 and N = 2. The self-duality equations, which have to be satisfied by the action of any self-dual system, are found and solutions are discussed. One important example is the Born-Infeld action. We explain why the N = 2 supersymmetric actions proposed so far are not the correct world-volume actions for D3 branes in d = 6.
description: 44 pages, latex, no figures
Extensive spiral structure and corotation resonance
Creators: name: Canzian, Blaise
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Spiral density wave theories demand that grand design spiral structure be bounded, at most, between the inner and outer Lindblad resonances of the spiral pattern. The corotation resonance lies between the outer and inner Lindblad resonances. The locations of the resonances are at radii whose ratios to each other are rather independent of the shape of the rotation curve. The measured ratio of outer to inner extent of spiral structure for a given spiral galaxy can be compared to the standard ratio of corotation to inner Lindblad resonance radius. In the case that the measured ratio far exceeds the standard ratio, it is likely that the corotation resonance is within the bright optical disk. Studying such galaxies can teach us how the action of resonances sculpts the appearance of spiral disks. This paper reports observations of 140 disk galaxies, leading to resonance ratio tests for 109 qualified spirals. It lists candidates that have a good chance of having the corotation resonance radius within the bright optical disk.
description: 29 pages, 7 figure files, AAS latex
Emergent conformal boundaries from finite-entanglement scaling in matrix product states
Creators: name: Huang, Rui-Zhen
name: Zhang, Long
name: Läuchli, Andreas M.
name: Haegeman, Jutho
name: Verstraete, Frank
name: Vanderstraeten, Laurens
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The use of finite entanglement scaling with matrix product states (MPS) has become a crucial tool for studying 1+1d critical lattice theories, especially those with emergent conformal symmetry. We argue that finite entanglement introduces a relevant deformation in the critical theory. As a result, the bipartite entanglement Hamiltonian defined from the MPS can be understood as a boundary conformal field theory with a physical and an entanglement boundary. We are able to exploit the symmetry properties of the MPS to engineer the physical conformal boundary condition. The entanglement boundary, on the other hand, is related to the concrete lattice model and remains invariant under this relevant perturbation. Using critical lattice models described by the Ising, Potts, and free compact boson CFTs, we illustrate the influence of the symmetry and the relevant deformation on the conformal boundaries in the entanglement spectrum.
description: 6+7 pages,4+7 figures; add nn RVB iPEPS result
Enhancing HEVC Compressed Videos with a Partition-masked Convolutional Neural Network
Creators: name: He, Xiaoyi
name: Hu, Qiang
name: Han, Xintong
name: Zhang, Xiaoyun
name: Zhang, Chongyang
name: Lin, Weiyao
Publisher: name: arXiv
Year: 2018
Subjects: subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: In this paper, we propose a partition-masked Convolution Neural Network (CNN) to achieve compressed-video enhancement for the state-of-the-art coding standard, High Efficiency Video Coding (HECV). More precisely, our method utilizes the partition information produced by the encoder to guide the quality enhancement process. In contrast to existing CNN-based approaches, which only take the decoded frame as the input to the CNN, the proposed approach considers the coding unit (CU) size information and combines it with the distorted decoded frame such that the degradation introduced by HEVC is reduced more efficiently. Experimental results show that our approach leads to over 9.76% BD-rate saving on benchmark sequences, which achieves the state-of-the-art performance.
description: Accepted by ICIP 2018
Orbifolds and Solitons
Creators: name: Kutasov, David
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a conformal field theory description of a solitonic heterotic string in type $IIA$ superstring theory compactified on $K3$, generalizing previous work by J. Harvey, A. Strominger and A. Sen. In ten dimensions the construction gives a fivebrane which is related to the fundamental type $II$ string by electric -- magnetic duality, and to the Dirichlet fivebrane of type $IIB$ string theory by $SL(2, Z)$.
description: 9 pages, harvmac; a few additional comments and references
Global Complex Roots and Poles Finding Algorithm Based on Phase Analysis for Propagation and Radiation Problems
Creators: name: Kowalczyk, Piotr
Publisher: name: arXiv
Year: 2018
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: A flexible and effective algorithm for complex roots and poles finding is presented. A wide class of analytic functions can be analyzed, and any arbitrarily shaped search region can be considered. The method is very simple and intuitive. It is based on sampling a function at the nodes of a regular mesh, and on the analysis of the function phase. As a result, a set of candidate regions is created and then the roots/poles are verified using a discretized Cauchy's argument principle. The accuracy of the results can be improved by the application of a self-adaptive mesh. The effectiveness of the presented technique is supported by numerical tests involving different types of structures, where electromagnetic waves are guided and radiated. The results are verified, and the computational efficiency of the method is examined.
Plans for a 10-m Submillimeter-wave Telescope at the South Pole
Creators: name: Stark, Antony A.
name: Carlstrom, John E.
name: Israel, Frank P.
name: Menten, Karl M.
name: Peterson, Jeffrey B.
name: Phillips, T. G.
name: Sironi, Giorgio
name: Walker, Christopher K.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A 10 meter diameter submillimeter-wave telescope has been proposed for the NSF Amundsen-Scott South Pole Station. Current evidence indicates that the South Pole is the best submillimeter-wave telescope site among all existing or proposed ground-based observatories. Proposed scientific programs place stringent requirements on the optical quality of the telescope design. In particular, reduction of the thermal background and offsets requires an off-axis, unblocked aperture, and the large field of view needed for survey observations requires shaped optics. This mix of design elements is well-suited for large scale (square degree) mapping of line and continuum radiation from submillimeter-wave sources at moderate spatial resolutions (4 to 60 arcsecond beam size) and high sensitivity (milliJansky flux density levels). the telescope will make arcminute angular scale, high frequency Cosmic Microwave Background measurements from the best possible ground-based site, using an aperture which is larger than is currently possible on orbital or airborne platforms. Effective use of this telescope will require development of large (1000 element) arrays of submillimeter detectors which are background-limited when illuminated by antenna temperatures near 50 K.
description: 12 pages, 3 figures
Ageing@Work supportive, motivating and persuasive approaches, tools & metrics
Creators: name: Abril-Jimenez Patricia
name: Montalva-Colomer Juan Bautista
name: Cabrera-Umpierrez Maria Fernanda
name: Lombroni Ivana
name: Patrick, Serafin
name: Mockallo Zofia
name: Mercalli Franco
name: Tsagaraki Evangelia
name: Dubielzig Markus
Publisher: name: Zenodo
Year: 2020

description: This document presents the analysis and systematic review of 14 best practices, 15 technologies and 26 different applications and tools that are currently used or can be used to assist workers in maintaining their workability and well-being. Special emphasis has been placed on older workers, who suffer a greater risk of hindering their work ability and well-being, mainly due to the effects of ageing. Ageing@Work has received funding from the EU Horizon 2020 Framework Programme for Research and Innovation under Grant Agreement No 826299
Additional file 1 of Permethrin-treated baby wraps for the prevention of malaria: results of a randomized controlled pilot study in rural Uganda
Creators: name: Boyce, Ross M.
name: Muhindo, Enid
name: Baguma, Emmanuel
name: Muhindo, Rabbison
name: Shem, Bwambale
name: François, Ruthly
name: Hawke, Sam
name: Shook-Sa, Bonnie E.
name: Ntaro, Moses
name: Nalusaji, Aisha
name: Nyehangane, Dan
name: Reyes, Raquel
name: Juliano, Jonathan J.
name: Siedner, Mark J.
name: Staedke, Sarah G.
name: Mulogo, Edgar M.
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: Cancer
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1. Baseline Survey.
Additional file 3: of Physical literacy levels of Canadian children aged 8â 12Â years: descriptive and normative results from the RBC Learn to Playâ CAPL project
Creators: name: Tremblay, Mark
name: Longmuir, Patricia
name: Barnes, Joel
name: Belanger, Kevin
name: Anderson, Kristal
name: Bruner, Brenda
name: Copeland, Jennifer
name: NystrĂśm, Christine Delisle
name: Gregg, Melanie
name: Hall, Nathan
name: Kolen, Angela
name: Lane, Kirstin
name: Law, Barbi
name: MacDonald, Dany
name: Martin, Luc
name: Saunders, Travis
name: Sheehan, Dwayne
name: Stone, Michelle
name: Woodruff, Sarah
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Developmental Biology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Percentiles for the total physical literacy score, domain scores, the individual components in the physical competence domain, and daily step counts. (DOCX 132 kb)
Electrochemical tuning of capacitive response of graphene oxide
Creators: name: Gutić, Sanjin J.
name: Kozlica, Dževad
name: Korać, Fehim
name: Bajuk-Bogdanović, Danica
name: Mitrić, Miodrag
name: Mirsky, Vladimir M.
name: Mentus, Slavko V.
name: Pašti, Igor A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Increasing energy demands of modern society requires deep understanding of the properties of energy storage materials as well as their performance tuning. We show that the capacitance of graphene oxide (GO) can be precisely tuned using a simple electrochemical reduction route. In situ resistance measurements, combined with cyclic voltammetry measurement and Raman spectroscopy, have shown that upon the reduction GO is irreversibly deoxygenated which is further accompanied with structural ordering and increasing of electrical conductivity. The capacitance is maximized when the concentration of oxygen functional groups is properly balanced with the conductivity. Any further reduction and de-oxygenation leads to the gradual loss of the capacitance. The observed trend is independent on the preparation route and on the exact chemical and structural properties of GO. It is proposed that an improvement of capacitive properties of any GO can be achieved by optimization of its reduction conditions.
description: 23 pages, 7 figures, 59 references
Photocurrents induced by structured light
Creators: name: Gunyaga, A. A.
name: Durnev, M. V.
name: Tarasenko, S. A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Advances in manipulating the structure of optical beams enable the study of interaction between structured light and low-dimensional semiconductor systems. We explore the photocurrents in two-dimensional systems excited by such inhomogeneous radiation with structured field. Besides the contribition associated with the intensity gradient, the photocurrent contains contributions driven by the gradients of the Stokes polarization parameters and the phase of the electromagnetic field. We develop a microscopic theory of the photocurrents induced by structured light and derive analytical expressions for all the photocurrent contributions at intraband transport of electrons. The theory is applied to analyze the radial and azimuthal photocurrents excited by twisted light beams carrying orbital angular momentum, and possible experiments to detect the photocurrents are discussed.
description: 10 pages, 7 figures
Apis alpina Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Apidae
Apis
Apis alpina

description: Apis alpina [spec. nov.]
A. hirsuta, thorace nigro, abdomine luteo. Faun. svec. 1016.
Habitat in Lapponiae alpibus.
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 579, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Faraday and Kerr rotation due to photoinduced orbital magnetization in two-dimensional electron gas
Creators: name: Durnev, M. V.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study theoretically the Faraday and Kerr rotation of a probe field due to the orbital magnetization of a two-dimensional electron gas induced by a circularly polarized pump. We develop a microscopic theory of these effects in the intraband spectral range based on the analytical solution of the kinetic equation for linear and parabolic energy dispersion of electrons and arbitrary scattering potential. We show that the spectral dependence of rotation angles and accompanying ellipticities experiences a sharp resonance when the probe and pump frequencies are close to each other. At the resonance, the Faraday and Kerr rotation angles are of the order of $0.1^\circ$ per 1~kW/cm$^2$ of the pump intensity in graphene samples, corresponding to a pump-induced synthetic magnetic field of about 0.1~T. We also analyze the influence of the dielectric contrast between dielectric media surrounding the two-dimensional electron gas on the rotation angles.
description: 9 pages, 4 figures
Collective field theory of the matrix-vector model
Creators: name: Avan, Jean
name: Jevicki, Antal
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct collective field theories associated with one-matrix plus $r$ vector models. Such field theories describe the continuum limit of spin Calogero Moser models. The invariant collective fields consist of a scalar density coupled to a set of fields in the adjoint representation of $U(r)$. Hermiticity conditions for the general quadratic Hamiltonians lead to a new type of extended non-linear algebra of differential operators acting on the Jacobian. It includes both Virasoro and $SU(r)$ (included in $sl(r, {\bf C}) \times sl(r, {\bf C})$) current algebras. A systematic construction of exact eigenstates for the coupled field theory is given and exemplified.
description: OLatex file, 20 pages, no figures. Misprints corrected, references added; reformulation of the constraint algebra and additional Comments on its structure; additional Comments on the structure of the continuum limit; Nuclear Physics B, to appear
Implementations of Fault-tolerant Quantum Devices
Creators: name: Herrera-Marti, David A.
Publisher: name: Imperial College London
Year: 2012

description: Accurate control and addressability of quantum devices will come with the promise of improvement in a wide variety of theoretical and applied fields, such as chemistry, condensed matter physics, theoretical computer science, foundational physics, communications, metrology and others. Decoherence of quantum states and the loss of quantum systems have adverse effects and deter a satisfactory usage of quantum devices. This is the main problem to be overcome, which is the goal of quantum fault tolerance. In this thesis we present a series of works that contribute to some of the fields mentioned above, in the direction of fighting decoherence and loss. These works fall in two categories: on one hand, we looked at computer architectures which can be used to combat errors, using techniques of quantum error correcting codes. In a first project we found decoherence and loss probability thresholds below which quantum computing is provably possible. We assumed a very particular error model tailored specially to quantum dots as single photon sources and linear optics. Subsequently we looked at the problem of loss, both of heralded and unheralded, and devised some ways to fight it. The framework under which this work was done was used to develop theory which is currently being tested in a quantum optics experimental group and will be reported in an article later this year. On the other hand, we studied how the error probability can be reduced at the physical level, thanks exclusively to the properties of the system in which information is stored, as opposed to making use of quantum codes. We looked at a particular superconducting circuit, which is potentially very well protected against some types of decoherence. In particular, we observed that the interaction with the environment become weaker for certain values of the circuit external parameters.
MR Sequence Development for Imaging Venous Blood Flow in the Leg
Creators: name: Pierce, Iain Thomas
Publisher: name: Imperial College London
Year: 2012

description: Deep Vein Thrombosis is a common complication in bed-ridden patients, described as the main cause of preventable hospital deaths in the UK (NICE 2010). Mechanical prophylaxis aims to promote venous flow, either statically with compression stockings, or dynamically with intermittent pneumatic compression or electrical muscle stimulation. Previous studies used ultrasound for venous flow measurements, limited to a single deep vein at a time, and some anatomical MRI for investigating the mechanisms behind these prophylaxes. MRI velocity mapping is used clinically in the arterial system where gating enables data accumulation over multiple cardiac cycles. This thesis describes the development of two real-time MRI spiral velocity mapping sequences for imaging venous blood flow in the leg, where venous flow variability is largely unrelated to the cardiac cycle. Real-time imaging with spiral gradient readouts minimised image duration. A phase-image fitting technique requiring only a velocity-encoded phase image was implemented for acceleration. For in vivo comparison, conventional flow imaging required metronome-guided breathing for a regular venous flow waveform. The long spiral readouts were sensitive to off-resonance and flow artefacts, where some unpublished effects were investigated. The off-resonance associated with deoxygenation of venous blood did not cause notable spiral artefacts, but disrupted the phase-image fitting technique and required correction with a pre-scan. The spiral flow methods demonstrated increased venous blood velocity and flow during application of mechanical compression. Metronome-guided breathing was also applied to vein wall imaging, where it detected wall thickening in patients with Behçet’s disease compared with normal subjects. For the first time, this thesis evaluated real-time MRI spiral velocity mapping of venous blood velocity and flow. The high resolution (1mm) and short image time required caused challenging off-resonance and flow artefacts. With some limitations, real-time spiral flow MRI during operation of compression devices may assist in their optimisation.
NK cell and T-cell immunity and TLR responsiveness during chronic HIV-1 infection
Creators: name: Coleman, Adam Robert
Publisher: name: Imperial College London
Year: 2012

description: This project investigates the potential of Natural Killer (NK) cells to respond to pathogen associated molecular patterns (PAMP) as model adjuvants and establishes the potential of PAMP to aid the recovery of antigen specific T-cell responses in chronic HIV-1 infection. Innate immunity is mediated by through the recognition of conserved PAMP recognised by receptors such as the toll-like receptors (TLR), expressed by accessory cells including blood DC, which are responsible for initiating adaptive immune responses, but also activate NK cells. NK cells are no longer seen solely as killers, but instead produce cytokines, including IFN-γ, and participate in the generation of adaptive immune responses with DC. HIV-1 infection potentially chronically activates TLR pathways, via recognition of the viral genome and as a result of damage to mucosal surfaces leading to microbial translocation and systemic recognition of PAMP including bacterial lipopolysaccharides. NK cell activation, cytokine production, differentiation and proliferation in response to PAMP have therefore been examined. NK cell responsiveness to certain TLR agonists was refractory in HIV-1 infected individuals although responses were maintained within CD56+CD16- NK cells, potentially providing help for antigen specific T-cell responses. The effects of HIV-1 infection on NK cell maturation were also investigated. T-cell activation by TLR agonists was also refractory in HIV-1 infected individuals. The impact of TLR ligation on antigen specific T-cell responses was investigated, combining TLR agonists with peptide pools (influenza, Epstein-Barr virus and cytomegalovirus or HIV-1 gag antigens). Of the TLR agonists tested, only CpG DNA resulted in enhanced frequencies of IFN-γ producing T-cells in HIV-1 infected individuals, whereas LPS demonstrated consistently reduced IFN-γ production. In conclusion, maintenance of responsiveness of CD56+CD16- NK cells and enhancement of HIV-1 antigen specific T-cell responses by CpG DNA have implications for both repopulation of the NK cell compartment and reconstitution of acquired immunity during HIV-1 infection.
System-bath entanglement of noninteracting fermionic impurities: Equilibrium, transient, and steady-state regimes
Creators: name: Ptaszynski, Krzysztof
name: Esposito, Massimiliano
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the behavior of entanglement between a single fermionic level and a fermionic bath in three distinct thermodynamic regimes. First, in thermal equilibrium, we analyze the dependence of entanglement on the considered statistical ensemble: for the grand canonical state, it is generated only for a sufficiently strong system-bath coupling, whereas it is present for arbitrarily weak couplings for the canonical state with a fixed particle number. The threshold coupling strength, at which entanglement appears, is shown to strongly depend on the bath bandwidth. Second, we consider the relaxation to equilibrium. In this case a transient entanglement in a certain time interval can be observed even in the weak-coupling regime, when the reduced dynamics and thermodynamics of the system can be well described by an effectively classical and Markovian master equation for the state populations. At strong coupling strengths, entanglement is preserved for long times and converges to its equilibrium value. Finally, in voltage-driven junctions, a steady-state entanglement is generated for arbitrarily weak system-bath couplings at a certain threshold voltage. It is enhanced in the strong-coupling regime, and it is reduced by either the particle-hole or the tunnel coupling asymmetry.
description: 26 pages, 29 figures. It includes content from arXiv:2306.08626
Additional file 4 of Histone H3K27 acetylation is dispensable for enhancer activity in mouse embryonic stem cells
Creators: name: Zhang, Tiantian
name: Zhang, Zhuqiang
name: Dong, Qiang
name: Xiong, Jun
name: Zhu, Bing
Publisher: name: figshare
Year: 2020
Subjects: Cell Biology
Information Systems not elsewhere classified
Developmental Biology

description: Review history.
A Small Cosmological Constant and Backreaction of Non-Finetuned Parameters
Creators: name: Krause, Axel
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We include the backreaction on the warped geometry induced by non-finetuned parameters in a two domain-wall set-up to obtain an exponentially small Cosmological Constant $Λ_4$. The mechanism to suppress the Cosmological Constant involves one classical fine-tuning as compared to an infinity of finetunings at the quantum level in standard D=4 field theory.
description: 13 pages, minor corrections and references added
Oral history interview with Peter Shapiro, 1984
Publisher: name: Columbia University
Year: 2021
Subjects: Students
Civil rights--United States
African American student movements
Vietnam War, 1961-1975--Protest movements
Underground press publications
Subculture
Student strikes
Feminism

description: Family background; initial political involvement during high school: member of Student Congress of Racial Equality and Students Organized Education and Action League, relationship with the counter culture; first term as a student at University of California at Berkeley, 1966; transfer to San Francisco State; writer for an underground newspaper, "Open Process"; experience with early anti-war rallies, stop the draft week, the Experimental college; increased political power of the Black Students Union; students' reaction to Columbia's and Paris' student movement; trip to Columbia University campus; description of the six month strike at San Francisco State: role of "Open Process" and the faculty, issues of the strike, police violence; decision to write "An End to Silence" with Bill Barlow; post-strike campus environment; Chicago Students for a Democratic Society convention; reaction to the emerging women's movement; graduate school in history at Berkeley; work with Radical Students Union; creation of the Bay Area School and the Liberation School; critique of Berkeley's political environment; problems of the new left; recent political involvement
title: ADCO, Cartulaire de Fontenay, second fragment (XIIIe siècle), Cart. 201 (15 H 9), folios 47-142, f. 081v
Creators: name: de la Côte d'Or, Archives départementales
name: CG21/F.PETOT/2009
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Cartulaire de Fontenay, second fragment (XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 201 (15 H 9), folios 47-142. Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de Fontenay, second fragment (XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 201 (15 H 9), folios 47-142, f. 081v, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Fontenay
description: Provenance: http://www.wikidata.org/entity/Q464918
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb119679755
description: Provenance: https://www.geonames.org/7874015
description: Provenance: http://www.idref.fr/027691802/id
Measurement of the Polarisation of the W Boson and Application to Supersymmetry Searches at the Large Hadron Collider
Creators: name: Sparrow, Alexander
Publisher: name: Imperial College London
Year: 2012

description: This thesis gives an account of two analyses performed using data from the Compact Muon Solenoid experiment at the Large Hadron Collider. The first analysis measures the polarisation of W bosons with large transverse momentum using 36 pb⁻¹ of data collected in 2010. The second applies similar techniques to a search for supersymmetry in events containing a single lepton, jets and missing transverse energy. This analysis utilises 1.14 fb⁻¹ of data collected up to 2011. Background material related to the Standard Model, supersymmetry and the experimental apparatus are reviewed in detail. The W polarisation measurement is performed in both the W->ev and W->μv channels. The expected effect, a large dominance of the left-handed over the right-handed helicity state, is observed with a significance of 7.8σ for the W⁺ and 5.1σ for the W⁻ in the muon channel. Similar results are found in the electron channel and for a combined fit to both lepton channels. The second analysis conducts a search for supersymmetry in events containing a single lepton, jets and missing transverse energy. The search employs techniques developed for the W polarisation measurement to separate supersymmetry from Standard Model backgrounds. No deviation from the Standard Model is observed. A detailed statistical interpretation is performed and used to set limits within the Constrained Minimal Supersymmetric Standard Model as well as two simplified models.
title: „The Family of Man“: Zur Bildsprache der Internationalen Organisationen im Mid-Century
Creators: name: Moisel, Claudia
Publisher: name: ZZF - Leibniz-Zentrum für Zeithistorische Forschung: Visual History
Year: 2018

description: Ausgehend von der These, dass die Internationalen Organisationen im Zeitalter der Dekolonisation nach 1945 auf die Erfindung einer neuen Bildsprache angewiesen waren, die uns bis heute zutiefst vertraut ist und inzwischen selbstverständlich anmutet, fragt das Projekt nach Akteuren, Politik und Praxis des Fotojournalismus im Mid-Century. Die Geschichte der Internationalen Organisationen ohne ihr Bildprogramm erklären zu wollen, läuft daher zumindest für die nach unserem heutigen Verständnis naiv-optimistischen 1950er Jahre ins Leere: Bilder waren die Sprache, welche weltweit verstanden werden konnte, und sie waren – vieles weist darauf hin – anders als die „Weltsprachen“ Englisch oder Französisch zumindest zeitgenössisch als herrschaftsfreie Ausdrucksformen weitgehend akzeptiert.
Oral history interview with Peter Singer 2004
Publisher: name: Columbia University
Year: 2019
Subjects: Vegetarianism--Moral and ethical aspects
Animal welfare
Laboratory animals
Animal industry--Moral and ethical aspects
Animal rights
Animal rights movement
Animal rights activists

description: In this two session interview, Peter Singer discusses a range of topics including his family and childhood in Australia; education and activism while in college; interest in ethics and philosophy; employment, research, and writing; and the animal rights movement. Singer discusses his college activism which included participation in the anti-conscription and antiwar movements, and a burgeoning interest in animal issues. Additionally, he worked on the student newspaper and was a member of the Radical Philosophy Group. He recounts meeting David Keshen, Stanley and Roslind Godlovitch who influenced his decision to become a vegetarian. Singer provides detailed information on why and how Animal Liberation was written. He discusses his collaboration and with former student Henry Spira, views on People for the Ethical Treatment of Animals (PETA), his participation in protest activity, his views on the status of animal advocacy in the United States, and attention given animal rights by the US media. Singer also gives his views on various campaigns aimed at ending animal testing, farming and research issues. Singer also describes assuming the presidency of Animal Rights International (ARI).
Effects of Processing on Microstructure and Indentation Response of AlN doped SiC
Creators: name: Ur-Rehman, Naeem
Publisher: name: Imperial College London
Year: 2012

description: Sintering of silicon carbide (SiC) requires high temperature and pressure due to the covalent nature of its bonding. Therefore, sintering additives are used to lower the sintering temperature and to control the microstructure. In this work, role of aluminium nitride (AlN) and carbon in pressure assisted densification is studied as the literature was not clear on whether AlN always induces liquid phase sintering (LPS). It is shown that mixing suffices to produce green bodies in which AlN is present as individual particles. When heated above 1700⁰C the AlN redistributes to grain boundaries and triple junctions through vapour transport and grain boundary diffusion, which causes the onset of densification. Addition of AlN and carbon together leads to microstructure more consistent with solid state sintering (SSS) than with LPS which was induced with the addition of yttria and AlN. Nano-indentation was used to measure hardness as a function of strain rate and temperature. It was found that hardness increases 0.8 GPa per decade strain rate and decreases with increasing temperature. Since in the absence of cracking hardness is a function of stiffness and yield stress, nano-indentation was used to calculate the Peierls stress (12 ± 1 GPa), activation energy (1.1 ± 0.3 eV) and the activation volume (1.44 x 10⁻²⁹ m³) of dislocation glide in SiC. Grain size was found to have a minimal effect on plasticity of the material when indents are small. Consistent with widely reported trends, the hardness was found to decrease when higher loads are used. It is argued that this decrease in hardness is due to an increase in crack length relative to the indent size. An empirical model, based on dimensional analysis, describes the observed decrease in hardness rather well. Observations of a new damage mechanism after unloading of large load indents are presented and a mechanism is proposed.
Oral history interview with Peter Vallone 1994
Publisher: name: Columbia University
Year: 2019
Subjects: City council members

description: Working relationship of City Council [Council] with Edward I. Koch [Koch] administration: homeless problem, budget negotiations, increase in Council staff, opposition to Koch's fiscal policy; efforts of Council to reform city government: fiscal policy, campaign finance bill, increased disclosure for city employees; effects of scandals on the Koch administration; evaluation of Koch and his mayoral success.
Additional file 1: of Hazard communication by volcanologists: part 2 - quality standards for volcanic hazard assessments
Creators: name: Bretton, Richard
name: Gottsmann, Joachim
name: Ryerson Christie
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy
subject: Hematology

description: Survey questions. (DOCX 33 kb)
Nonclassical radiation from a nonlinear oscillator driven solely by classical $1/f$ noise
Creators: name: Purkayastha, Archak
name: Mølmer, Klaus
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Low-frequency classical $1/f$-noise and quantum noise from low-temperature phonon modes are ubiquitous across various experimental platforms, and are usually considered a hindrance for quantum technological applications. Here we show that the simultaneous action of classical $1/f$ noise and a low-temperature phonon bath on a nonlinear oscillator can result in the generation of nonclassical antibunched radiation without the need for any additional drive. The $1/f$ noise itself provides the source of energy for generation of photons, while the phonon bath prevents heating up to infinite temperature and takes the nonlinear oscillator to a noise-averaged non-equilibrium steady state. The photon current in this non-equilibrium steady state may be detected by a standard wide-band detector. For sufficient nonlinearity and frequency dependence of the effective noise spectrum, the detected radiation can be antibunched. This opens the possibility to turn two of the most ubiquitous intrinsic noises in experimental platforms from a hindrance to a resource. It shows that wasteful heat from unavoidable noises can be converted into useful radiation. These results are based on the Redfield equation, which provides a rigorously derived general approach to treat any type of weak noise in a quantum system, specified only via the noise spectral function, as we discuss in detail.