cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Resonant optomechanics with a vibrating carbon nanotube and a radio-frequency cavity
Creators: name: Ares, Natalia
name: Pei, Tian
name: Mavalankar, Aquila
name: Mergenthaler, Matthias
name: Warner, Jamie H.
name: Briggs, G. Andrew D.
name: Laird, Edward A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In an optomechanical setup, the coupling between cavity and resonator can be increased by tuning them to the same frequency. We study this interaction between a carbon nanotube resonator and a radio-frequency circuit. In this resonant regime, the vacuum optomechanical coupling is enhanced by the DC voltage coupling the cavity and the mechanical resonator. Using the cavity to detect the nanotube's motion, we observe and simulate interference between mechanical and electrical oscillations. We measure the mechanical ring-down and show that further improvements to the system could enable measurement of mechanical motion at the quantum limit.
Delta Checks
Creators: name: Loh, Tze Ping
name: Tan, Rui Zhen
name: Sethi, Sunil Kumar
name: Lim, Chun Yee
name: Markus, Corey
Publisher: name: Singapore Institute of Technology
Year: 2023
Subjects: Clinical chemistry (incl. diagnostics)

description: Delta check is an electronic error detection tool. It compares the difference in sequential results within a patient against a predefined limit, and when exceeded, the delta check rule is considered triggered. The patient results should be withheld for review and troubleshooting before releasing to the clinical team for patient management. Delta check was initially developed as a tool to detect wrong-blood-in-tube (sample misidentification) errors. It is now applied to detect errors more broadly within the total testing process. Recent advancements in the theoretical understanding of delta check has allowed for more precise application of this tool to achieve the desired clinical performance and operational set up. In this Chapter, we review the different pre-implementation considerations, the foundation concepts of delta check, the process of setting up key delta check parameters, performance verification and troubleshooting of a delta check flag.
title: Bone metastasis: detection by 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET)/ computed tomography (CT) in lung cancer patients
Creators: name: Panunzio, Annalori
Publisher: name: European Society of Thoracic Imaging
Year: 2012
Subjects: subject: Bones
subject: Lung
subject: Oncology
subject: CT
subject: PET-CT
subject: Molecular imaging
subject: Neoplasia

description: Objectives Materials and Methods Results Conclusions
description: Objectives: We aimed to evaluate the impact of FDG PET/CT in detecting different types of bone metastasis in patients with lung...
title: Tracheobronchial lesions - A pictorial review
Creators: name: Chandratreya, Ladli
Publisher: name: European Society of Thoracic Imaging
Year: 2012
Subjects: subject: Thorax
subject: CT
subject: MR
subject: Education
subject: Neoplasia
subject: Congenital
subject: Trauma

description: Objectives Body Conclusions
description: Objectives: The tracheobronchial tree can be reviewed on every CT of the thorax. It is not uncommon to see abnormalities of the trachea or lesions within the bronchi. We present a series of 20 cross sectional images illustrating a variety of these causes and...
title: Computed tomography for pulmonary embolism: scan assessment of a one-year cohort and estimated cancer risk associated with diagnostic irradiation.
Creators: name: Niemann, Tilo
Publisher: name: European Society of Thoracic Imaging
Year: 2012
Subjects: subject: Thorax
subject: Radioprotection / Radiation dose
subject: CT-Angiography
subject: Radiation effects
subject: Radiation safety
subject: Biological effects

description: Objectives Materials and Methods Results Conclusions
description: Objectives: The objective of this study is to demonstrate a method applicable to larger populations to evaluate the additional lifetime attributable risk (LAR) of cancer incidence and cancer mortality due to a single diagnostic chest CT applicable to a larger...
Search for neutral resonances decaying into a Z boson and a pair of b jets or tau leptons
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search is performed for a new resonance decaying into a lighter resonance and a Z boson. Two channels are studied, targeting the decay of the lighter resonance into either a pair of oppositely charged tau leptons or a b b-bar pair. The Z boson is identified via its decays to electrons or muons. The search exploits data collected by the CMS experiment at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 19.8 inverse femtobarns. No significant deviations are observed from the standard model expectation and limits are set on production cross sections and parameters of two-Higgs-doublet models.
description: Replaced with published version. Added the journal reference and DOI. All figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIG-15-001/index.html
Variational Bayesian Inference of Line Spectra
Creators: name: Badiu, Mihai-Alin
name: Hansen, Thomas Lundgaard
name: Fleury, Bernard Henri
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: In this paper, we address the fundamental problem of line spectral estimation in a Bayesian framework. We target model order and parameter estimation via variational inference in a probabilistic model in which the frequencies are continuous-valued, i.e., not restricted to a grid; and the coefficients are governed by a Bernoulli-Gaussian prior model turning model order selection into binary sequence detection. Unlike earlier works which retain only point estimates of the frequencies, we undertake a more complete Bayesian treatment by estimating the posterior probability density functions (pdfs) of the frequencies and computing expectations over them. Thus, we additionally capture and operate with the uncertainty of the frequency estimates. Aiming to maximize the model evidence, variational optimization provides analytic approximations of the posterior pdfs and also gives estimates of the additional parameters. We propose an accurate representation of the pdfs of the frequencies by mixtures of von Mises pdfs, which yields closed-form expectations. We define the algorithm VALSE in which the estimates of the pdfs and parameters are iteratively updated. VALSE is a gridless, convergent method, does not require parameter tuning, can easily include prior knowledge about the frequencies and provides approximate posterior pdfs based on which the uncertainty in line spectral estimation can be quantified. Simulation results show that accounting for the uncertainty of frequency estimates, rather than computing just point estimates, significantly improves the performance. The performance of VALSE is superior to that of state-of-the-art methods and closely approaches the Cramér-Rao bound computed for the true model order.
description: 15 pages, 8 figures, accepted for publication in IEEE Transactions on Signal Processing
title: CT Findings of Influenza A (H1N1) Pneumonia in Adults: Pattern Analysis and Prognostic Comparisons
Creators: name: Kang, Hee
Publisher: name: European Society of Thoracic Imaging
Year: 2012
Subjects: subject: Lung
subject: CT
subject: Perception image
subject: Outcomes analysis
subject: Infection

description: Objectives Materials and Methods Results Conclusions
description: Objectives: The purpose of our study was to evaluate retrospectively the chest CT findings of influenza A (H1N1) pneumonia and their relationship with clinical...
title: Mechanical Injuries during Pulmonary Surgery revealed by alveolar-capillary membrane permeability
Creators: name: Chou, Shah-Hwa
Publisher: name: European Society of Thoracic Imaging
Year: 2012
Subjects: subject: Trauma
subject: Diagnostic procedure
subject: Nuclear medicine conventional
subject: Thorax

description: Objectives Materials and Methods Results Conclusions
description: Objectives: Complications sometimes occur after pulmonary resection and related to many factors. This study is to verify whether mechanical injuries, caused by manipulation during operation be one of those...
Growing networks of overlapping communities with internal structure
Creators: name: Young, Jean-Gabriel
name: Hébert-Dufresne, Laurent
name: Allard, Antoine
name: Dubé, Louis J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: 37N99

description: We introduce an intuitive model that describes both the emergence of community structure and the evolution of the internal structure of communities in growing social networks. The model comprises two complementary mechanisms: One mechanism accounts for the evolution of the internal link structure of a single community, and the second mechanism coordinates the growth of multiple overlapping communities. The first mechanism is based on the assumption that each node establishes links with its neighbors and introduces new nodes to the community at different rates. We demonstrate that this simple mechanism gives rise to an effective maximal degree within communities. This observation is related to the anthropological theory known as Dunbar's number, i.e., the empirical observation of a maximal number of ties which an average individual can sustain within its social groups. The second mechanism is based on a recently proposed generalization of preferential attachment to community structure, appropriately called structural preferential attachment (SPA). The combination of these two mechanisms into a single model (SPA+) allows us to reproduce a number of the global statistics of real networks: The distribution of community sizes, of node memberships and of degrees. The SPA+ model also predicts (a) three qualitative regimes for the degree distribution within overlapping communities and (b) strong correlations between the number of communities to which a node belongs and its number of connections within each community. We present empirical evidence that support our findings in real complex networks.
description: 14 pages, 8 figures, 2 tables
Expectation propagation for continuous time stochastic processes
Creators: name: Cseke, Botond
name: Schnoerr, David
name: Opper, Manfred
name: Sanguinetti, Guido
Publisher: name: arXiv
Year: 2015
Subjects: subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: We consider the inverse problem of reconstructing the posterior measure over the trajec- tories of a diffusion process from discrete time observations and continuous time constraints. We cast the problem in a Bayesian framework and derive approximations to the posterior distributions of single time marginals using variational approximate inference. We then show how the approximation can be extended to a wide class of discrete-state Markov jump pro- cesses by making use of the chemical Langevin equation. Our empirical results show that the proposed method is computationally efficient and provides good approximations for these classes of inverse problems.
EOSC Symposium 2022 Presentation: Upskilling countries to engage in EOSC Task Force
Creators: name: Anderberg, Sabina
name: Andersson, Sofia
name: Bonacorsi, Daniele
name: Cebecauer, Marek
name: Clare, Helen
name: Clivaz, Claire
name: Cox, Cymon
name: Dall, Elke
name: Dobreva, Milena
name: Filiposka, Sonja
name: Flynn, Katherine
name: Garnett, Vicky
name: Gruenpeter, Natalia
name: Hackl, Claudia
name: Kádárné Kelemen, Ildikó
name: Kozlakidis, Zisis
name: Lazzeri, Emma
name: Lindvall, Jessica
name: Marek, Jiří
name: Nazakat, Ali
name: Priess-Buchheit, Julia
name: Saurugger, Bernd
name: Tanbay, Betül
name: Trif, Ioana
name: Weber, Beatrix
Publisher: name: Zenodo
Year: 2023

description: The EOSC-A Task Force (TF) ‘Upskilling countries to engage in EOSC’ recognises the significant developments in Open Science are being addressed at Member State level and within research performing organisations, research infrastructures and disciplinary groups. However, we know engagement with EOSC is variable and therefore this TF aims to address this in different ways by; 1) assisting in aligning with EOSC and Open Science initiatives across Europe, 2) supporting the implementation of these initiatives in countries and across various stakeholder groups such as different disciplines. The aim of the TF is also to promote the exchange of approaches across the member states and regions, organisations and stakeholder groups.
Global Albedos of Pluto and Charon from LORRI New Horizons Observations
Creators: name: Buratti, B. J.
name: Hofgartner, J. D.
name: Hicks, M. D.
name: Weaver, H. A.
name: Stern, S. A.
name: Momary, T.
name: Mosher, J. A.
name: Beyer, R. A.
name: Verbiscer, A. J.
name: Zangari, A. M.
name: Young, L. A.
name: Lisse, C. M.
name: Singer, K.
name: Cheng, A.
name: Grundy, W.
name: Ennico, K.
name: Olkin, C. B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The exploration of the Pluto-Charon system by the New Horizons spacecraft represents the first opportunity to understand the distribution of albedo and other photometric properties of the surfaces of objects in the Solar System's "Third Zone" of distant ice-rich bodies. Images of the entire illuminated surface of Pluto and Charon obtained by the Long Range Reconnaissance Imager (LORRI) camera provide a global map of Pluto that reveals surface albedo variegations larger than any other Solar System world except for Saturn's moon Iapetus. Normal reflectances on Pluto range from 0.08-1.0, and the low-albedo areas of Pluto are darker than any region of Charon. Charon exhibits a much blander surface with normal reflectances ranging from 0.20-0.73. Pluto's albedo features are well-correlated with geologic features, although some exogenous low-albedo dust may be responsible for features seen to the west of the area informally named Tombaugh Regio. The albedo patterns of both Pluto and Charon are latitudinally organized, with the exception of Tombaugh Regio, with darker regions concentrated at the Pluto's equator and Charon's northern pole The phase curve of Pluto is similar to that of Triton, the large moon of Neptune believed to be a captured Kuiper Belt Object (KBO), while Charon's is similar to that of the Moon. Preliminary Bond albedos are 0.25+/-0.03 for Charon and 0.72+/-0.07 for Pluto. Maps of an approximation to the Bond albedo for both Pluto and Charon are presented for the first time. Our work shows a connection between very high albedo (near unity) and planetary activity, a result that suggests the KBO Eris may be currently active.
description: 32 pages, 3 tables, 8 figures Accepted for Publication in Icarus, 2016, v02
Updated constraints on velocity and momentum-dependent asymmetric dark matter
Creators: name: Vincent, Aaron C.
name: Scott, Pat
name: Serenelli, Aldo
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present updated constraints on dark matter models with momentum-dependent or velocity-dependent interactions with nuclei, based on direct detection and solar physics. We improve our previous treatment of energy transport in the solar interior by dark matter scattering, leading to significant changes in fits to many observables. Based on solar physics alone, DM with a spin-independent $q^{4}$ coupling provides the best fit to data, and a statistically satisfactory solution to the solar abundance problem. Once direct detection limits are accounted for however, the best solution is spin-dependent $v^2$ scattering with a reference cross-section of 10$^{-35}$ cm$^2$ (at a reference velocity of $v_0=220$ km s$^{-1}$), and a dark matter mass of about 5 GeV.
description: 34 pages, 18 figures. Accepted in JCAP. Ancillary file likelihood_solarDM.dat contains observables and chi-squared values for each model studied
New vector bosons and the diphoton excess
Creators: name: de Blas, Jorge
name: Santiago, Jose
name: Vega-Morales, Roberto
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We consider the possibility that the recently observed diphoton excess at $\sim 750$ GeV can be explained by the decay of a scalar particle ($φ$) to photons. If the scalar is the remnant of a symmetry-breaking sector of some new gauge symmetry, its coupling to photons can be generated by loops of the charged massive vectors of the broken symmetry. If these new $W^\prime$ vector bosons carry color, they can also generate an effective coupling to gluons. In this case the diphoton excess could be entirely explained in a simplified model containing just $φ$ and $W^\prime$. On the other hand if $W^{\prime}$ does not carry color, we show that, provided additional colored particles exist to generate the required $φ$ to gluon coupling, the diphoton excess could be explained by the same $W^{\prime}$ commonly invoked to explain the diboson excess at $\sim 2$ TeV. We also explore possible connections between the diphoton and diboson excesses with the anomalous $t\bar{t}$ forward-backward asymmetry.
description: Latex 8 pages, 1 figure. Extended discussion, new references. Matches published version
Wirth, Günter und Pleßke, Hans-Martin: Albrecht Goes
Creators: name: Thiede, Carsten Peter
Publisher: name: Jahrbuch für evangelikale Theologie
Year: 2025

description: 1823040551
description: Jahrbuch für evangelikale Theologie, V. 5 (1991): Jahrbuch für evangelikale Theologie, Band 5
title: Reliability Analysis of Visual Ranking of Coronary Artery Calcification on Low-Dose CT of the Thorax for Lung Cancer Screening: Comparison with ECG-gated Calcium Scoring CT
Creators: name: Sung, Yon Mi
Publisher: name: European Society of Thoracic Imaging
Year: 2012
Subjects: subject: Calcifications / Calculi
subject: Screening
subject: CT
subject: Cardiovascular system

description: Objectives Materials and Methods Results Conclusions
description: Objectives: To evaluate the reliability of visual ranking of coronary artery calcification on low-dose CT compared toAgatston score on ECG-gated calcium scoring...
Charged-particle distributions in $pp$ interactions at $\sqrt{s}=8$ TeV measured with the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: This paper presents measurements of distributions of charged particles which are produced in proton--proton collisions at a centre-of-mass energy of $\sqrt{s} = 8$ TeV and recorded by the ATLAS detector at the LHC. A special dataset recorded in 2012 with a small number of interactions per beam crossing (below 0.004) and corresponding to an integrated luminosity of $160 \mathrm{μb^{-1}}$ was used. A minimum-bias trigger was utilised to select a data sample of more than 9 million collision events. The multiplicity, pseudorapidity, and transverse momentum distributions of charged particles are shown in different regions of kinematics and charged-particle multiplicity, including measurements of final states at high multiplicity. The results are corrected for detector effects and are compared to the predictions of various Monte Carlo event generator models which simulate the full hadronic final state.
description: 30 pages plus author list and cover page (47 pages total), 13 figures, 1 table. Final version published in EPJC. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2014-19/
title: 18F-FDG PET Finding of Pulmonary Actinomycosis
Creators: name: Lee, Youkyung
Publisher: name: European Society of Thoracic Imaging
Year: 2012
Subjects: subject: Biopsy
subject: CT
subject: PET
subject: Lung
subject: Infection

description: Objectives Materials and Methods Results Conclusions
description: Objectives: To describe findings of pulmonary actinomycosis on 2-[fluorine 18]fluoro-2-deoxy-D-glucose (18F -FDG) positron emission tomography...
Quantum Hall effect and semiconductor to semimetal transition in biased black phosphorus
Creators: name: Yuan, Shengjun
name: van Veen, Edo
name: Katsnelson, Mikhail I.
name: Roldán, Rafael
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the quantum Hall effect of 2D electron gas in black phosphorus in the presence of perpendicular electric and magnetic fields. In the absence of a bias voltage, the external magnetic field leads to a quantization of the energy spectrum into equidistant Landau levels, with different cyclotron frequencies for the electron and hole bands. The applied voltage reduces the band gap, and eventually a semiconductor to semimetal transition takes place. This nontrivial phase is characterized by the emergence of a pair of Dirac points in the spectrum. As a consequence, the Landau levels are not equidistant anymore, but follow the $\varepsilon_n\propto \sqrt{nB}$ characteristic of Dirac crystals as graphene. By using the Kubo-Bastin formula in the context of the kernel polynomial method, we compute the Hall conductivity of the system. We obtain a $σ_{xy}\propto 2n$ quantization of the Hall conductivity in the gapped phase (standard quantum Hall effect regime), and a $σ_{xy}\propto 4(n+1/2)$ quantization in the semimetalic phase, characteristic of Dirac systems with non-trivial topology.
description: 8 pages, 7 figures
title: Thin-section Computed Tomography Findings in 'Pseudomonas aeruginosa' Pulmonary Infection
Creators: name: Okada, Fumito
Publisher: name: European Society of Thoracic Imaging
Year: 2012
Subjects: subject: Infection
subject: Diagnostic procedure
subject: CT-High Resolution
subject: Lung

description: Objectives Materials and Methods Results Conclusions
description: Objectives: Shah et al. reported CT findings of nosocomial Pseudomonas aeruginosa (PA) pneumonia, which commonly presents with multifocal air space consolidation followed by nodular features [1]. To the best of our knowledge, no other English-language studies...
Investigation of Endogenous Retroviruses in the Pathogenesis of Sporadic Amyotrophic Lateral Sclerosis (ALS) by
Creators: name: Day, Edmund
Publisher: name: University of Westminster
Year: 2022

description: Human Endogenous Retroviruses (HERVs) are remnants of ancient retroviral infections that have become incorporated into the human genome over the course of our evolution as a species. These fossil viruses have been co-opted by our genome as regulators of cellular gene expression amongst various other functions. Over the past few years however they have been increasingly discovered as differentially expressed in neurological conditions such as Amyotrophic Lateral Sclerosis. While HERV-K (HML-2) transcripts were reported as elevated in premotor cortex samples from an ALS American cohort by Li et.al. (2015) the RT-qPCR assays performed in this sudy, using the same primers and reaction conditions in a larger ALS UK cohort were unable to corroborate these findings. Our collaborators at Kings College London, however, were able to find a novel HERV-K3 (HML-6) transcript on locus 3p21.31c upregulated in the primary motor cortex. We were able to confirm this using a subset of their primary motor cortex samples using RT-qPCR primers but were unable to replicate the results in a larger premotor cortex cohort. Using the modified ERVMap RNA-Seq method used by Jones et.al. (2021) we were able to analyse a number of publicly available datasets covering Cerebellum, Frontal Cortex, Motor Cortex and Peripheral Blood Mononuclear Cells. Within these datasets a number of novel HERVs were identified as being differentially expressed across the tissue types. A single HERV-H transcript was seen to be significantly downregulated in both the frontal cortex by RNA-Seq analysis and in the premotor cortex of our ALS UK cohort. This identification of a novel HERV-H transcript being differentially regulated in the premotor cortex and subsequent RNA-Seq analysis on the blood and the brain provides a solid basis for future research into HERVs as novel biomarkers for ALS in which a diagnostic marker for early diagnosis and target for treatment is lacking to-date.
Fermionic Symmetry-Protected Topological Phase in a Two-Dimensional Hubbard Model
Creators: name: Chen, Cheng-Chien
name: Muechler, Lukas
name: Car, Roberto
name: Neupert, Titus
name: Maciejko, Joseph
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the two-dimensional (2D) Hubbard model using exact diagonalization for spin-1/2 fermions on the triangular and honeycomb lattices decorated with a single hexagon per site. In certain parameter ranges, the Hubbard model maps to a quantum compass model on those lattices. On the triangular lattice, the compass model exhibits collinear stripe antiferromagnetism, implying $d$-density wave charge order in the original Hubbard model. On the honeycomb lattice, the compass model has a unique, quantum disordered ground state that transforms nontrivially under lattice reflection. The ground state of the Hubbard model on the decorated honeycomb lattice is thus a 2D fermionic symmetry-protected topological phase. This state -- protected by time-reversal and reflection symmetries -- cannot be connected adiabatically to a free-fermion topological phase.
description: Original: 5+3 pages, 4+2 figures, including the supplemental material. Revised: updated title, content, and references in version 2
title: Silent brain metastases in NSCLC patients undergoing radical radiotherapy and surgery: Is routine screening likely to be worthwhile?
Creators: name: Matthews, Suzanne
Publisher: name: European Society of Thoracic Imaging
Year: 2012
Subjects: subject: Lung
subject: Head and neck
subject: CT
subject: Screening
subject: Staging
subject: Surgery
subject: Metastases

description: Objectives Materials and Methods Results Conclusions
description: Objectives: The 2011 NICE guidance on non small cell lung cancer (NSCLC) advises “consideration of MRI or CT of the head in patients selected for treatment with curative intent” (1). However, the American Thoracic Society and the European Respiratory...
The causal topology of neutral 4-manifolds with null boundary
Creators: name: Georgiou, Nikos
name: Guilfoyle, Brendan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Differential Geometry (math.DG)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: Primary: 53A35, Secondary: 57N13

description: This paper considers aspects of 4-manifold topology from the point of view of the null cone of a neutral metric, a point of view we call neutral causal topology. In particular, we construct and investigate neutral 4-manifolds with null boundaries that arise from canonical 3- and 4-dimensional settings. A null hypersurface is foliated by its normal and, in the neutral case, inherits a pair of totally null planes at each point. This paper focuses on these plane bundles in a number of classical settings The first construction is the conformal compactification of flat neutral 4-space into the 4-ball. The null foliation on the boundary in this case is the Hopf fibration on the 3-sphere and the totally null planes in the boundary are integrable. The metric on the 4-ball is a conformally flat, scalar-flat, positive Ricci curvature neutral metric. The second constructions are subsets of the 4-dimensional space of oriented geodesics in a 3-dimensional space-form, equipped with its canonical neutral metric. We consider all oriented geodesics tangent to a given embedded strictly convex 2-sphere. The third is a neutral geometric model for the intersection of two surfaces in a 4-manifold. The surfaces are the sets of oriented normal lines to two round spheres in Euclidean 3-space, which form Lagrangian surfaces in the 4-dimensional space of all oriented lines. The intersection of the boundaries of their normal neighbourhoods form tori that we prove are totally real and Lorentz if the spheres do not intersect. We conclude with possible topological applications of the three constructions, including neutral Kirby calculus, neutral knot invariants and neutral Casson handles, respectively.
description: 26 pages AMS-TEX, v2 includes Reeb vector field characterisation. For an expository video on the results and background of this paper, please follow link https://www.youtube.com/watch?v=VUlPMPwT-hA
title: Prediction of the lung adenocarcinoma metastatic spread according to initial MDCT examination
Creators: name: Milosavljevic, Tamara
Publisher: name: European Society of Thoracic Imaging
Year: 2012
Subjects: subject: Lung
subject: CT-High Resolution
subject: CT
subject: Computer Applications-3D
subject: Computer Applications-Detection, diagnosis
subject: Metastases

description: Objectives Materials and Methods Results Conclusions
description: Objectives: Lung cancer is a disease characterized by uncontrolled cell growth in tissues of the lung. If left untreated, this growth can spread beyond the lung in a process called metastasis into nearby tissue and, eventually, into other parts of the...
Roteiro de vídeo - Boas práticas
Creators: name: Diniz, Adriana Valéria Santos
name: Pereira, Maria Aparecida Nunes
Publisher: name: Zenodo
Year: 2023
Subjects: Roteiro
Vídeo
Boas Práticas

description: Este relatório apresenta as atividades desenvolvidas no âmbito do Projeto “O Fortalecimento do Programa Dinheiro Direto na escola na região Nordeste como estratégia para a gestão democrática e para a qualidade da educação” – CECAMPE REGIÃO NORDESTE, referente à produção do vídeo “Compartilhando as boas práticas de gestão do PDDE”. O objetivo da criação do vídeo foi apresentar as diretrizes, as finalidades do PDDE e a correta gestão dos recursos financeiros disponíveis, por meio do relato de boas práticas de uso dos recursos do Programa. O vídeo foi roteirizado pelos professores doutores Anielson Barbosa da Silva, Ana Paula Furtado Soares Pontes e Maria Aparecida Nunes Pereira, sendo validado pelo FNDE.
Experimental and numerical study of CO$_{2}$ dissolution in a heterogeneous Hele-Shaw cell
Creators: name: Benhammadi, Rima
name: Meunier, PAtrice
name: Hidalgo, Juan J.
Publisher: name: arXiv
Year: 2025
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We investigate the convective instability resulting from the dissolution of carbon dioxide (CO$_{2}$) into water in a heterogeneous Hele-Shaw cell utilizing both experimental and numerical approaches. Experiments are conducted in a Hele-Shaw cell with a variable gap width corresponding to a log-normally distributed permeability of variance $σ_{\log K}^2 = 0.135$. Two mean gaps (370 $μ$m and 500 $μ$m) with the same correlation lengths ($λ_x$ = 0.032 m and $λ_z$ = 0.016 m) are considered. Experiments in homogeneous cells with a constant gap are also performed. The CO$_2$ partial pressure ($P_{\text{CO}_{2}}$) is varied between $12\%\pm 1\%$ (0.12 bar) and $85\%\pm 1\%$ (0.85 bar). The convective patterns are visualized using Bromocresol green. The effect of the heterogeneity on the instability is analyzed through its wavenumber, amplitude and growth rate. There is a good agreement between the experimental and numerical results. Fingers appear more dispersive and distorted in the heterogeneous media. Heterogeneous cases display a larger instability amplitude, faster growth rate and smaller dimensionless wavenumber. This reflects that heterogeneity accelerates the instability and the merging of the fingers. A comparison of the autocorrelation function of the fingering patterns and the permeability field shows that heterogeneity increases the dimensionless correlation length of the fingering pattern, which slows down its growth when its size becomes comparable to the heterogeneity.
title: Frequency and progression rate of coronary artery calcification on low dose ungated MDCT for lung cancer screening
Creators: name: Yi, Jeong Geun
Publisher: name: European Society of Thoracic Imaging
Year: 2012
Subjects: subject: Calcifications / Calculi
subject: Screening
subject: CT
subject: Thorax
subject: Lung
subject: Cardiac

description: Objectives Materials and Methods Results Conclusions
description: Objectives: The purpose of our study was to determine the frequency and progression rate of coronary artery calcification (CAC) in healthy people undergoing low dose ungated multi detector computed tomography (MDCT) for lung cancer...
Relationships between breeding Barn Owls Tyto alba, their prey, and agri-environment scheme habitats in lowland arable landscapes
Creators: name: McHugh, Niamh M.
name: Case, Jodie
name: Heward, Christopher J.
name: Ness, Eleanor R.
name: Baker, Madeleine
name: Burrell, Ryan A.
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: Small mammal abundance was greatest in landscapes with a high coverage of grassy field margins, which was also associated with increased fledging success of Barn Owls. To determine the potential value of agri-environment scheme (AES) habitats for small mammals and, in turn, predatory Barn Owls. Monitoring of small mammals was conducted across 14 1-km2 British National Grid squares. Survey squares were selected according to a known distribution of Barn Owls derived from monitoring during 2018–2020. We analysed relationships between small mammal activity and coverage of grass-dominated field margins, floristic margins, hedgerows, and tree lines. Barn Owl nest box occupancy in 2021 was analysed in relation to prey abundance (small mammal activity) and the described habitat types. Barn Owl fledging success was then modelled in relation to the prey abundance and the coverage of different habitat types. Our findings suggest that grass field margin habitats are among the AES options most likely to be of value to Barn Owls, as positive relationships with fledging success and prey species were identified. This research is important in providing evidence to support continued implementation and valuing of grass margins under future versions of AES. The study findings suggest that breeding Barn Owls benefit from the provision of grassy field margin habitat, more so than those sown with wildflowers. Our findings add to the body of evidence demonstrating the positive relationships between AES and wildlife and support continued implementation of grass margins on arable farmland.
title: Congenital abnormalities of the neonatal thorax: a pictorial review.
Creators: name: Allen, Pamela
Publisher: name: European Society of Thoracic Imaging
Year: 2012
Subjects: subject: Paediatric
subject: Thorax
subject: Foetal imaging
subject: Conventional radiography
subject: CT
subject: MR
subject: Education
subject: Congenital

description: Objectives Body Conclusions
description: Objectives: Objectives: We present a pictorial review covering a range of congenital thoracic abnormalities seen at our large tertiary referral centre including diaphragmatic hernias, atresias and various cystic abnormalities but excluding cardiovascular...
Using XMM-Newton to study the energy dependent variability of H 1743-322 during its 2014 outburst
Creators: name: Stiele, H.
name: Yu, W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Black hole transients during bright outbursts show distinct changes of their spectral and variability properties as they evolve during an outburst, that are interpreted as evidence for changes in the accretion flow and X-ray emitting regions. We obtained an anticipated XMM-Newton ToO observation of H 1743-322 during its outburst in September 2014. Based on data of eight outbursts observed in the last 10 years we expected to catch the start of the hard-to-soft state transition. The fact that neither the general shape of the observed power density spectrum nor the characteristic frequency show an energy dependence implies that the source still stays in the low-hard state at the time of our observation near outburst peak. The spectral properties agree with the source being in the low-hard state and a Swift/XRT monitoring of the outburst reveals that H 1743-322 stays in the low-hard state during the entire outburst (a. k. a. 'failed outburst'). We derive the averaged QPO waveform and obtain phase-resolved spectra. Comparing the phase-resolved spectra to the phase averaged energy spectrum reveals spectral pivoting. We compare variability on long and short time scales using covariance spectra and find that the covariance ratio does not show an increase towards lower energies as has been found in other black hole X-ray binaries. There are two possible explanations: either the absence of additional disc variability on longer time scales is related to the rather high inclination of H 1743-322 compared to other black hole X-ray binaries or it is the reason why we observe H 1743-322 during a failed outburst. More data on failed outbursts and on high-inclination sources will be needed to investigate these two possibilities further.
description: 9 pages, 7 figures, accepted by MNRAS
Exact canonic eigenstates of the truncated Bogoliubov Hamiltonian in an interacting bosons gas
Creators: name: Ferrari, Loris
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In a gas of $N$ weakly interacting bosons \cite{Bogo1, Bogo2}, a truncated canonic Hamiltonian $\widetilde{h}_c$ follows from dropping all the interaction terms between free bosons with momentum $\hbar\mathbf{k}\ne\mathbf{0}$. Bogoliubov Canonic Approximation (BCA) is a further manipulation, replacing the number \emph{operator} $\widetilde{N}_{in}$ of free particles in $\mathbf{k}=\mathbf{0}$, with the total number $N$ of bosons. BCA transforms $\widetilde{h}_c$ into a different Hamiltonian $H_{BCA}=\sum_{\mathbf{k}\ne\mathbf{0}}ε(k)B^\dagger_\mathbf{k}B_\mathbf{k}+const$, where $B^\dagger_\mathbf{k}$ and $B_\mathbf{k}$ create/annihilate non interacting pseudoparticles. The problem of the \emph{exact} eigenstates of the truncated Hamiltonian is completely solved in the thermodynamic limit (TL) for a special class of eigensolutions $|\:S,\:\mathbf{k}\:\rangle_{c}$, denoted as \textquoteleft s-pseudobosons\textquoteright, with energies $\mathcal{E}_{S}(k)$ and \emph{zero} total momentum. Some preliminary results are given for the exact eigenstates (denoted as \textquoteleft $η$-pseudobosons\textquoteright), carrying a total momentum $η\hbar\mathbf{k}$ ($η=\:1,\:2,\: \dots$). A comparison is done with $H_{BCA}$ and with the Gross-Pitaevskii theory (GPT), showing that some differences between exact and BCA/GPT results persist even in the TL. Finally, it is argued that the emission of $η$-pseudobosons, which is responsible for the dissipation $\acute{a}$ \emph{la} Landau \cite{L}, could be significantly different from the usual picture, based on BCA pseudobosons.
Kranz, Gisbert: Kafkas Lachen und andere Schriften zur Literatur 1950-1990
Creators: name: Thiede, Carsten Peter
Publisher: name: Jahrbuch für evangelikale Theologie
Year: 2025

description: 1823039839
description: Jahrbuch für evangelikale Theologie, V. 5 (1991): Jahrbuch für evangelikale Theologie, Band 5
title: Pulmonary aspergilloma: Imaging findings with pathologic correlation
Creators: name: Ödev, Kemal
Publisher: name: European Society of Thoracic Imaging
Year: 2012
Subjects: subject: Infection
subject: eLearning
subject: Conventional radiography
subject: CT
subject: Lung

description: Objectives Materials and Methods Results Conclusions
description: Objectives: Aspergilloma formation represents a saprophytic infection in patients with preexisting structural lung disease. Patients at risk for aspergilloma development have cavitary, bullous or cystic lung disease that is commonly a result of...
Relationships between breeding Barn Owls Tyto alba, their prey, and agri-environment scheme habitats in lowland arable landscapes
Creators: name: McHugh, Niamh M.
name: Case, Jodie
name: Heward, Christopher J.
name: Ness, Elenore R.
name: Baker, Madeleine
name: Burrell, Ryan A.
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: Small mammal abundance was greatest in landscapes with a high coverage of grassy field margins, which was also associated with increased fledging success of Barn Owls. To determine the potential value of agri-environment scheme (AES) habitats for small mammals and, in turn, predatory Barn Owls. Monitoring of small mammals was conducted across 14 1-km2 British National Grid squares. Survey squares were selected according to a known distribution of Barn Owls derived from monitoring during 2018–2020. We analysed relationships between small mammal activity and coverage of grass-dominated field margins, floristic margins, hedgerows, and tree lines. Barn Owl nest box occupancy in 2021 was analysed in relation to prey abundance (small mammal activity) and the described habitat types. Barn Owl fledging success was then modelled in relation to the prey abundance and the coverage of different habitat types. Our findings suggest that grass field margin habitats are among the AES options most likely to be of value to Barn Owls, as positive relationships with fledging success and prey species were identified. This research is important in providing evidence to support continued implementation and valuing of grass margins under future versions of AES. The study findings suggest that breeding Barn Owls benefit from the provision of grassy field margin habitat, more so than those sown with wildflowers. Our findings add to the body of evidence demonstrating the positive relationships between AES and wildlife and support continued implementation of grass margins on arable farmland.
Spontaneously stochastic solutions in one-dimensional inviscid systems
Creators: name: Mailybaev, Alexei A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In this paper, we study the inviscid limit of the Sabra shell model of turbulence, which is considered as a particular case of a viscous conservation law in one space dimension with a nonlocal quadratic flux function. We present a theoretical argument (with a detailed numerical confirmation) showing that a classical deterministic solution before a finite-time blowup, $t < t_b$, must be continued as a stochastic process after the blowup, $t > t_b$, representing a unique physically relevant description in the inviscid limit. This theory is based on the dynamical system formulation written for the logarithmic time $τ= \log(t-t_b)$, which features a stable traveling wave solution for the inviscid Burgers equation, but a stochastic traveling wave for the Sabra model. The latter describes a universal onset of stochasticity immediately after the blowup.
Transport anomalies and quantum criticality in electron-doped cuprate superconductors
Creators: name: Zhang, Xu
name: Yu, Heshan
name: He, Ge
name: Hu, Wei
name: Yuan, Jie
name: Zhu, Beiyi
name: Jin, Kui
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Superconductivity research is like running a marathon. Three decades after the discovery of high-Tc cuprates, there have been mass data generated from transport measurements, which bring fruitful information. In this review, we give a brief summary of the intriguing phenomena reported in electron-doped cuprates from the aspect of electrical transport as well as the complementary thermal transport. We attempt to sort out common features of the electron-doped family, e.g. the strange metal, negative magnetoresistance, multiple sign reversals of Hall in mixed state, abnormal Nernst signal, complex quantum criticality. Most of them have been challenging the existing theories, nevertheless, a unified diagram certainly helps to approach the nature of electron-doped cuprates.
description: 35 figures; a brief summary of transport properties; the common features seen in the last figure
title: Pulmonary Hypertension. Experience and lessons from a satellite UK centre
Creators: name: Robinson, Graham
Publisher: name: European Society of Thoracic Imaging
Year: 2012
Subjects: subject: Thorax
subject: CT
subject: Diagnostic procedure
subject: Embolism / Thrombosis
subject: Connective tissue disorders

description: Objectives Materials and Methods Results Conclusions
description: Objectives: Selected patients with Pulmonary Hypertension (PH) benefit from novel medical and surgical therapies that can significantly improve morbidity and mortality. Currently these therapies are delivered by seven Nationally Commissioned Group (NCG)...
Farm Population Estimates for 1970
Creators: name: Human Resources Branch, Economic Development Division
name: Human Resources Branch, Economic Development Division
Publisher: name: Unknown
Year: 1971
Subjects: Community/Rural/Urban Development
Labor and Human Capital

description: Excerpt from the report: The population living on farms in rural areas of the United States; averaged 9,712,000 in the 12 months centered on April 1970. The indicated decline of 595,000 since 1969 represents a further continuation of the longtime downward trend in the number of farm residents. Since 1960, when there were 15,635,000 persons in the farm population, the number has declined about 6 million -- at an average rate of 4.8 percent annually.