cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Pulse dose radiofrequency on knee osteoarthritis
Creators: name: Chiaravalloti, Antonio
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Musculoskeletal joint
subject: Fluoroscopy
subject: Ablation procedures
subject: Motility

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Knee osteothritis (OA) is a leading cause of disability in older adults [1]. OA has a growing prevalence in people [50 years of age [2]. Important risk factors are aging and obesity [1]. Mechanical stress has also a pivotal role. OA early appears in...
On exact correlation functions in SU(N) ${\cal N} = 2$ superconformal QCD
Creators: name: Baggio, Marco
name: Niarchos, Vasilis
name: Papadodimas, Kyriakos
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the exact coupling constant dependence of extremal correlation functions of ${\cal N} = 2$ chiral primary operators in 4d ${\cal N} = 2$ superconformal gauge theories with gauge group SU(N) and N_f=2N massless fundamental hypermultiplets. The 2- and 3-point functions, viewed as functions of the exactly marginal coupling constant and theta angle, obey the tt* equations. In the case at hand, the tt* equations form a set of complicated non-linear coupled matrix equations. We point out that there is an ad hoc self-consistent ansatz that reduces this set of partial differential equations to a sequence of decoupled semi-infinite Toda chains, similar to the one encountered previously in the special case of SU(2) gauge group. This ansatz requires a surprising new non-renormalization theorem in ${\cal N} = 2$ superconformal field theories. We derive a general 3-loop perturbative formula for 2- and 3-point functions in the ${\cal N} = 2$ chiral ring of the SU(N) theory, and in all explicitly computed examples we find agreement with the tt* equations, as well as the above-mentioned ansatz. This is suggestive evidence for an interesting non-perturbative conjecture about the structure of the ${\cal N} = 2$ chiral ring in this class of theories. We discuss several implications of this conjecture. For example, it implies that the holonomy of the vector bundles of chiral primaries over the superconformal manifold is reducible. It also implies that a specific subset of extremal correlation functions can be computed in the SU(N) theory using information solely from the S^4 partition function of the theory obtained by supersymmetric localization.
description: 33 pages
Li-Yau type inequality for curves in any codimension
Creators: name: Miura, Tatsuya
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 53A04, 49Q10, and 53E40

description: For immersed curves in Euclidean space of any codimension we establish a Li--Yau type inequality that gives a lower bound of the (normalized) bending energy in terms of multiplicity. The obtained inequality is optimal for any codimension and any multiplicity except for the case of planar closed curves with odd multiplicity; in this remaining case we discover a hidden algebraic obstruction and indeed prove an exhaustive non-optimality result. The proof is mainly variational and involves Langer--Singer's classification of elasticae and André's algebraic-independence theorem for certain hypergeometric functions. We also discuss applications to elastic flows, networks, and knots.
description: 28 pages, 6 figures, final version
The Historical X-ray Transient KY TrA in quiescence
Creators: name: Zurita, C.
name: Corral-Santana, J. M.
name: Casares, J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present deep optical images of the historical X-ray Transient KY TrA in quiescence from which we confirm the identification of the counterpart reported by Murdin (1977) and derive an improved position of alpha=15:28:16.97 and delta=-61:52:57.8. In 2007 June we obtained I, R and V images, where the counterpart seems to be double indicating the presence of an interloper at ~1.4 arcsec NW. After separating the contribution of KY TrA we calculate I=21.47+-0.09, R=22.3+-0.1 and V=23.6+-0.1. Similar brightness in the I band was measured in May 2004 and June 2010. Variability was analyzed from series of images taken in 2004, spanning 0.6 h, and in two blocks of 6 h during 2007. We find that the target is not variable in any dataset above the error levels ~0.07 mags. The presence of the interloper might explain the non-detection of the classic ellipsoidal modulation; our data indicates that it contributes around half of the total flux, which would make a variation <0.15 mags not detectable. A single spectrum obtained in 2004 May shows the H-alpha emission characteristic of X-ray transients in quiescence with a full-width-half-maximum FWHM=27000+-280 km s/s. If the system follows the FWHM -- K_2 correlation found by Casares (2015), this would correspond to a velocity semi-amplitude of the donor star of K_2=630+-74 km/s. Based on the outburst amplitude and colours of the optical counterpart in quiescence we derive a crude estimate of the orbital period of 8 h and an upper limit of 15 h which would lead to mass function estimates of ~9 M_solar and <16 M_solar respectively.
description: Accepted by MNRAS
Dehn functions of coabelian subgroups of direct products of groups
Creators: name: Kropholler, Robert
name: Isenrich, Claudio Llosa
Publisher: name: arXiv
Year: 2021
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20F65 (20F05, 20F06, 20F69)

description: We develop new methods for computing the precise Dehn functions of coabelian subgroups of direct products of groups, that is, subgroups which arise as kernels of homomorphisms from the direct product onto a free abelian group. These improve and generalise previous results by Carter and Forester on Dehn functions of level sets in products of simply connected cube complexes, by Bridson on Dehn functions of cocyclic groups and by Dison on Dehn functions of coabelian groups. We then provide several applications of our methods to subgroups of direct products of free groups, to groups with interesting geometric finiteness properties and to subgroups of direct products of right-angled Artin groups.
description: 25 pages, 6 figures, v3: Minor corrections and improvements to the exposition. Final version
Topological Floquet Phases in Driven Coupled Rashba Nanowires
Creators: name: Klinovaja, Jelena
name: Stano, Peter
name: Loss, Daniel
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider periodically-driven arrays of weakly coupled wires with conduction and valence bands of Rashba type and study the resulting Floquet states. This non-equilibrium system can be tuned into non-trivial phases such as of topological insulators, Weyl semimetals, and dispersionless zero-energy edge mode regimes. In the presence of strong electron-electron interactions, we generalize these regimes to the fractional case, where elementary excitations have fractional charges $e/m$ with $m$ being an odd integer.
The Quasi-Zariski topology on the graded quasi-primary spectrum of a graded module over a graded commutative ring
Creators: name: Jaradat, Malik
name: Al-Zoubi, Khaldoun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics

description: Let $G$ be a group with identity $e$. Let $R$ be a $G$-graded commutative ring and $M$ a graded $R$-module. A proper graded submodule $Q$ of $M$ is called a graded quasi-primary submodule if whenever $r\in h(R)$ and $m\in h(M)$ with $rm\in Q$, then either $r\in Gr((Q:_{R}M))$ or $m\in Gr_{M}(Q)$. The graded quasi primary spectrum $qp.Spec_{g}(M)$ is defined to be the set of all graded quasi primary submodules of $M$. In this paper, we introduce and study a topology on $qp.Spec_{g}(M)$, called the Quasi-Zariski Topology, and investigate properties of this topology and some conditions under which (% $qp.Spec_{g}(M)$, $q.τ^{g}$) is a Noetherian, spctral space.
The effects of climate and weather factors on water-related infectious diseases in Pacific Island Countries, protocol for a systematic review and meta-analysis.
Creators: name: Hosking, Rose
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Environmental Public Health
subject: Public Health
subject: Medicine and Health Sciences
subject: Epidemiology
subject: infectious disease
subject: meta-analysis
subject: pacific
subject: systematic review
subject: water

description: Systematic review of quantitative epidemiological studies of climate and \weather variability and water-related diseases in the Pacific Island Countries
Secluded singlet fermionic dark matter driven by the Fermi gamma-ray excess
Creators: name: Kim, Yeong Gyun
name: Lee, Kang Young
name: Park, Chan Beom
name: Shin, Seodong
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We examine the possibility that the dark matter (DM) interpretation of the GeV scale Fermi gamma-ray excess at the Galactic Center can be realized in a specific framework - secluded singlet fermionic dark matter model with small mixing between the dark and Standard Model sector. Within this framework it is shown that the DM annihilation into bottom-quark pair, Higgs pair, and new scalar pair can give good fits to the Fermi gamma-ray data. Moreover unavoidable constraints from the antiproton ratio by the PAMELA and AMS-02, the gamma-ray emission from the dwarf spheroidal galaxies by the Fermi-LAT, and the Higgs measurements by the LHC are also considered. Then we found our best-fit parameters for the Fermi gamma-ray excess without conflicting other experimental and cosmological constraints if uncertainties on the DM density profile of the Milky Way Galaxy are taken into account. Successfully surviving parameters are benchmark points for future study on the collider signals.
description: 20 pages, 8 figures, 1 table
Weak integrability breaking and level spacing distribution
Creators: name: Szász-Schagrin, D.
name: Pozsgay, B.
name: Takács, G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Recently it was suggested that certain perturbations of integrable spin chains lead to a weak breaking of integrability in the sense that integrability is preserved at the first order in the coupling. Here we examine this claim using level spacing distribution. We find that the volume dependent crossover between integrable and chaotic level spacing statistics which marks the onset of quantum chaotic behaviour, is markedly different for weak vs. strong breaking of integrability. In particular, for the gapless case we find that the crossover coupling as a function of the volume $L$ scales with a $1/L^2$ law for weak breaking as opposed to the $1/L^3$ law previously found for the strong case.
description: 15 pages, 12 figures. v2: references added. v3: text thoroughly revised, presentation clarified and improved, main results and conclusions unchanged. v4: typos in the formula of the current fixed, the definition of operator norm corrected
The Dirichlet problem for p-minimizers on finely open sets in metric spaces
Creators: name: Björn, Anders
name: Björn, Jana
name: Latvala, Visa
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: Primary: 31E05, Secondary: 30L99, 31C40, 35J92

description: We initiate the study of fine $p$-(super)minimizers, associated with $p$-harmonic functions, on finely open sets in metric spaces, where $1 < p < \infty$. After having developed their basic theory, we obtain the $p$-fine continuity of the solution of the Dirichlet problem on a finely open set with continuous Sobolev boundary values, as a by-product of similar pointwise results. These results are new also on unweighted $\mathbf{R}^n$. We build this theory in a complete metric space equipped with a doubling measure supporting a $p$-Poincaré inequality.
description: 22 pages
The nature of and responses to online and technology facilitated VAWG: A scoping review protocol
Creators: name: Hermolle, Megan
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Communication
subject: Criminology
subject: FOS: Law
subject: Social Media
subject: Social and Behavioral Sciences
subject: Domestic and Intimate Partner Violence
subject: Sociology
subject: FOS: Sociology
subject: Communication Technology and New Media
subject: Intimate Partner Violence
subject: IPV
subject: Online Harassment
subject: Tech-Facilitated Abuse
subject: Technology Facilitated Abuse
subject: VAWG
subject: Violence against Women and Girls

description: A Scoping Review to explore the nature and prevalence of online harms and tech facilitated VAWG, and online tools and responses to this growing issue.
NEXT-GENERAT ION ENERGY PERFORMANCE CERT IF ICATES. USERS AN D ST AKEHO LDERS REQU IREMENTS AN D MARKET 'S NEEDS
Creators: name: Seduikyte, Lina
name: Panteli, Christiana
name: Eglė Klumbytė
name: Spūdys, Paulius
name: Phoebe-Zoe Morsink-Georgali
name: Černeckienė, Jurgita
name: Chatzipanagiotidou, Panagiota
name: Koltsios Stavros
name: Ioannidis, Dimosthenis
name: Fokaides, Paris
Publisher: name: Zenodo
Year: 2022
Subjects: EPC
LCA
BIM
DT
GIS
Human confort
stakeholder
D^2EPC

description: Energy Performance Certificates (EPCs) are a mandatory requirement for the EU Member States (MS) when constructing, selling, or renting a building, acting as a transparent information instrument, for all the involved stakeholders, regarding the energy performance of a building asset. Existing procedures and tools used in assessing buildings’ energy performance across Europe, present several drawbacks and discrepancies that delay the energy transition of the European building stock to a greener and sustainable model. In order to have a holistic approach on the drawbacks and requirements of the current EPCs, it is important to capture the stakeholder requirements and feedback, depending on their role on the EPC life cycle. This study performed under the H2020 project “Next-generation Dynamic Digital EPCs for Enhanced Quality and User Awareness (D^2EPC)“, aims to identify the needs and requirements of the major stakeholders and the market, concerning the emerging next-generation EPCs. The results of this study will help to understand the potential reach and impact of the next generation EPCs, as well as to adopt EPCs rationale into the current practices of the industry. The methodology suggested by the Project Management Institute (PMI) for identifying EPC stakeholders was employed. A questionnaire concerning the needs and gaps of next generation EPCs was addressed to the identified stakeholders, and the findings were analysed, towards delivering the major trends and challenges of the buildings energy certification field. In terms of this study, desk research involving the assessment of 52 reports was also conducted, with the aim to identify the challenges, needs, and opportunities in current EPC schemes. The findings of the study are anticipated to support the efforts and initiatives conducted on a European level, for the upgrade and improvement of the buildings energy certification
title: The role of an elastography image processing technique for the diagnosis of prostatic cancer
Creators: name: Coroiu, Roxana
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Neoplasia
subject: Diagnostic procedure
subject: Elastography
subject: Genital / Reproductive system male

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The diagnosis for prostate cancer (PCa) relies on the two pillars of PSA-testing and digital rectal examination. The standard recommendation for prostate biopsies is 6 to 12 core samples in order to make an accurate diagnosis.[1] A main downfall to...
title: Afebrile Postpartum Encephalopathy: Towards An Imaging Algorithm
Creators: name: Mithra, Ashok
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Ischaemia / Infarction
subject: Haemorrhage
subject: Embolism / Thrombosis
subject: Thrombolysis
subject: Imaging sequences
subject: Contrast agent-other
subject: MR-Angiography
subject: MR
subject: CT
subject: Neuroradiology brain

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: AIMS AND OBJECTIVES: To evaluate the clinical and imaging features of patients presenting with afebrile encephalopathy in the postpartum period. To formulate an imaging algorithm for such patients to help diagnose and distinguish the most common...
Phase-resolved NuSTAR and Swift-XRT Observations of Magnetar 4U 0142+61
Creators: name: Tendulkar, Shriharsh P.
name: Hascöet, Romain
name: Yang, Chengwei
name: Kaspi, Victoria M.
name: Beloborodov, Andrei M.
name: An, Hongjun
name: Bachetti, Matteo
name: Boggs, Steven E.
name: Christensen, Finn E.
name: Craig, William W.
name: Guillot, Sebastien
name: Hailey, Charles A.
name: Harrison, Fiona A.
name: Stern, Daniel
name: Zhang, William
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present temporal and spectral analysis of simultaneous 0.5-79 keV Swift-XRT and NuSTAR observations of the magnetar 4U 0142+61. The pulse profile changes significantly with photon energy between 3 and 35 keV. The pulse fraction increases with energy, reaching a value of ~20%, similar to that observed in 1E 1841-045 and much lower than the ~80% pulse fraction observed in 1E 2259+586. We do not detect the 55-ks phase modulation reported in previous Suzaku-HXD observations. The phase-averaged spectrum of 4U 0142+61 above 20 keV is dominated by a hard power law with a photon index, $Γ$ ~ 0.65, and the spectrum below 20 keV can be described by two blackbodies, a blackbody plus a soft power law, or by a Comptonized blackbody model. We study the full phase-resolved spectra using the electron-positron outflow model of Beloborodov (2013). Our results are consistent with the parameters of the active j-bundle derived from INTEGRAL data by Hascoet et al. (2014). We find that a significant degeneracy appears in the inferred parameters if the footprint of the j-bundle is allowed to be a thin ring instead of a polar cap. The degeneracy is reduced when the footprint is required to be the hot spot inferred from the soft X-ray data.
description: 14 pages, 8 figures, 4 tables. Accepted for publication in ApJ
title: Pseudoaneurysm of the renal artery following nephron-sparing surgery: imaging findings (CEUS/CT/MR) and coil embolization.
Creators: name: Cicero, Calogero
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Haemorrhage
subject: Fistula
subject: Aneurysms
subject: Embolisation
subject: Ultrasound-Colour Doppler
subject: MR
subject: CT
subject: Kidney
subject: Contrast agents

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To present the imaging findings and the treatment of three patients with renal artery pseudoaneurysm (RAP) after partial...
Exact finite reduced density matrix and von Neumann entropy for the Calogero model
Creators: name: Osenda, Omar
name: Pont, Federico M.
name: Okopińska, Anna
name: Serra, Pablo
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The information content of continuous quantum variables systems is usually studied using a number of well known approximation methods. The approximations are made to obtain the spectrum, eigenfunctions or the reduced density matrices that are essential to calculate the entropy-like quantities that quantify the information. Even in the sparse cases where the spectrum and eigenfunctions are exactly known the entanglement spectrum, {\em i.e.} the spectrum of the reduced density matrices that characterize the problem, must be obtained in an approximate fashion. In this work, we obtain analytically a finite representation of the reduced density matrices of the fundamental state of the N-particle Calogero model for a discrete set of values of the interaction parameter. As a consequence, the exact entanglement spectrum and von Neumann entropy is worked out.
description: Journal of Physics A (in press)
Equilibrium states for non-transitive random open and closed dynamical systems
Creators: name: Atnip, Jason
name: Froyland, Gary
name: González-Tokman, Cecilia
name: Vaienti, Sandro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We prove a random Ruelle--Perron--Frobenius theorem and the existence of relative equilibrium states for a class of random open and closed interval maps, without imposing transitivity requirements, such as mixing and covering conditions, which are prevalent in the literature. This theorem provides existence and uniqueness of random conformal and invariant measures with exponential decay of correlations, and allows us to expand the class of examples of (random) dynamical systems amenable to multiplicative ergodic theory and the thermodynamic formalism. Applications include open and closed non-transitive random maps, and a connection between Lyapunov exponents and escape rates through random holes. We are also able to treat random intermittent maps with geometric potentials.
Assessment of effect sizes and the prevalence of “positive” results in RRs and preregistered studies
Creators: name: Scheel, Anne
name: Henderson, Emma
name: Chambers, Christopher
name: Lakens, Daniel
Publisher: name: Open Science Framework
Year: 2022

description: Exploratory assessment of effect sizes and the proportion of confirmed hypotheses in published Registered Reports and preregistered studies in psychology. This repository contains a project outline, preregistration document, and a preliminary coding scheme.
Adaptive Broadcast Suppression for Trickle-Based Protocols
Creators: name: Meyfroyt, Thomas M. M.
name: Stolikj, Milosh
name: Lukkien, Johan J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Low-power wireless networks play an important role in the Internet of Things. Typically, these networks consist of a very large number of lossy and low-capacity devices, challenging the current state of the art in protocol design. In this context the Trickle algorithm plays an important role, serving as the basic mechanism for message dissemination in notable protocols such as RPL and MPL. While Trickle's broadcast suppression mechanism has been proven to be efficient, recent work has shown that it is intrinsically unfair in terms of load distribution and that its performance relies strongly on network topology. This can lead to increased end-to-end delays (MPL), or creation of sub-optimal routes (RPL). Furthermore, as highlighted in this work, there is no clear consensus within the research community about what the proper parameter settings of the suppression mechanism should be. We propose an extension to the Trickle algorithm, called adaptive-k, which allows nodes to individually adapt their suppression mechanism to local node density. Supported by analysis and a case study with RPL, we show that this extension allows for an easier configuration of Trickle, making it more robust to network topology.
title: Using social media for e-learning
Creators: name: Pyatigorskaya, Nadya
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Computer applications
subject: Professional issues
subject: CT
subject: MR
subject: Conventional radiography
subject: eLearning
subject: Education
subject: Education and training

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: - Being aware of usingthe social media as e-leaning tools - Employing Twitter and Facebookfor keeping abreast of the latest trends and developments in radiology andfor efficient e-leaning - Being aware of the ways of followingthe Twitter and...
On Regularized Square-root Regression Problems: Distributionally Robust Interpretation and Fast Computations
Creators: name: Chu, Hong T. M.
name: Toh, Kim-Chuan
name: Zhang, Yangjing
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: Square-root (loss) regularized models have recently become popular in linear regression due to their nice statistical properties. Moreover, some of these models can be interpreted as the distributionally robust optimization counterparts of the traditional least-squares regularized models. In this paper, we give a unified proof to show that any square-root regularized model whose penalty function being the sum of a simple norm and a seminorm can be interpreted as the distributionally robust optimization (DRO) formulation of the corresponding least-squares problem. In particular, the optimal transport cost in the DRO formulation is given by a certain dual form of the penalty. To solve the resulting square-root regularized model whose loss function and penalty function are both nonsmooth, we design a proximal point dual semismooth Newton algorithm and demonstrate its efficiency when the penalty is the sparse group Lasso penalty or the fused Lasso penalty. Extensive experiments demonstrate that our algorithm is highly efficient for solving the square-root sparse group Lasso problems and the square-root fused Lasso problems.
description: 39 pages, 7 figures
title: Eponymous cardiovascular abnormalities- Imaging review and historical perspectives
Creators: name: Rajiah, Prabhakar
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Congenital
subject: Diagnostic procedure
subject: MR
subject: CT
subject: Cardiovascular system
subject: Cardiac

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: ±To describe eponymous cardiovascular abnormalities ±To demonstrate cross sectional imaging appearances of these anomalies ±To describe the biography and history of the physicians involved in these...
title: Novel MRI based semi-automatic segmentation method for volumetry of the colon
Creators: name: Frøkjær, Jens Brøndum
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Abdomen
subject: Colon
subject: MR
subject: Computer Applications-Detection, diagnosis
subject: Colonography MR
subject: Image registration
subject: Motility

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Novel insight into colon morphology may be achieved by assessing the undisturbed colon from magnetic resonance imaging (MRI). This may add diagnostic value in assessment of gastrointestinal disorders such as constipation and abdominal...
Champions as a Knowledge Translation Strategy within a Health Care Context: A Scoping Review Protocol
Creators: name: Santos, Wilmer
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Translational Medical Research
subject: Veterinary Medicine
subject: Medicine and Health Sciences
subject: Nursing
subject: FOS: Health sciences
subject: champion
subject: health care
subject: knowledge implementation
subject: knowledge translation

description: This registration contains the protocol for a scoping review on what and how champions influence knowledge translation and implementation. The review also includes a systematic review on champions' effectiveness in regards to knowledge translation and implementation.
Competing risks regression for clustered survival data via the marginal additive subdistribution hazards model
Creators: name: Chen, Xinyuan
name: Esserman, Denise
name: Li, Fan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Methodology (stat.ME)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: A population-averaged additive subdistribution hazards model is proposed to assess the marginal effects of covariates on the cumulative incidence function and to analyze correlated failure time data subject to competing risks. This approach extends the population-averaged additive hazards model by accommodating potentially dependent censoring due to competing events other than the event of interest. Assuming an independent working correlation structure, an estimating equations approach is outlined to estimate the regression coefficients and a new sandwich variance estimator is proposed. The proposed sandwich variance estimator accounts for both the correlations between failure times and between the censoring times, and is robust to misspecification of the unknown dependency structure within each cluster. We further develop goodness-of-fit tests to assess the adequacy of the additive structure of the subdistribution hazards for the overall model and each covariate. Simulation studies are conducted to investigate the performance of the proposed methods in finite samples. We illustrate our methods using data from the STrategies to Reduce Injuries and Develop confidence in Elders (STRIDE) trial.
Approaches to including environmental impacts in health technology assessments, guidelines, and health economic analyses: a systematic scoping review
Creators: name: Yoo, Seo-Hyun
name: Pinho-Gomes, Ana-Catarina
name: Maiden, Hannah
name: Toolan, Michael
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Health Information Technology
subject: Physical Sciences and Mathematics
subject: Environmental Indicators and Impact Assessment
subject: Public Health
subject: Medicine and Health Sciences
subject: Life Sciences
subject: Environmental Sciences

description: A systematic scoping review of approaches to including consideration of environmental impacts in health technology appraisals, guidelines development processes and health economic evaluations.
title: Pulmonary infectious disease manifesting as subpleural consolidation in chest CT : Image findings with pathologic correlation
Creators: name: Moon, Sung Min
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Biopsy
subject: CT-High Resolution
subject: CT
subject: Thorax
subject: Lung
subject: Contrast agent-intravenous
subject: Infection
subject: Pathology

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To be familiar with the important clinical and histopathologic findings of various infectious diseases, which involve subpleural area of lung parenchyma. To illustrate the radiologic appearances of these various infectious diseases and to discuss...
Microscopic Characterization of Individual Submicron Bubbles during the Layer-by-Layer Deposition: Towards Creating Smart Agents
Creators: name: Kato, Riku
name: Frusawa, Hiroshi
Publisher: name: arXiv
Year: 2015
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigated the individual properties of various polyion-coated bubbles with a mean diameter ranging from 300 to 500 nm. Dark field microscopy allows one to track the individual particles of the submicron bubbles (SBs) encapsulated by the layer-by-layer (LbL) deposition of cationic and anionic polyelectrolytes (PEs). Our focus is on the two-step charge reversals of PE-SB complexes: the first is a reversal from negatively charged bare SBs with no PEs added to positive SBs encapsulated by polycations (monolayer deposition), and the second is overcharging into negatively charged PE-SB complexes due to the subsequent addition of polyanions (double-layer deposition). The details of these phenomena have been clarified through the analysis of a number of trajectories of various PE-SB complexes that experience either Brownian motion or electrophoresis. The contrasted results obtained from the analysis were as follows: an amount in excess of the stoichiometric ratio of the cationic polymers was required for the first charge-reversal, whereas the stoichiometric addition of the polyanions lead to the electrical neutralization of the PE-SB complex particles. The recovery of the stoichiometry in the double-layer deposition paves the way for fabricating multi-layered SBs encapsulated solely with anionic and cationic PEs, which provides a simple protocol to create smart agents for either drug delivery or ultrasound contrast imaging.
description: For supplementary movie, see http://www.mdpi.com/1996-1944/8/7/4176
title: How much dangerous is CT according to patients and how does dose bill affect their perception of ionizing radiation?
Creators: name: Vernuccio, Federica
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Radioprotection / Radiation dose
subject: CT
subject: Education
subject: Dosimetry
subject: Education and training

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Use of computed tomography (CT) has increased dramatically since its inception in 1970; for this reason in the last decades exposure to ionizing radiations in CT has constantly increased [1,2]. Most authors agree that patients should receive...
{did2s}: Two-Stage Difference-in-Differences
Creators: name: Butts, Kyle
name: Gardner, John
Publisher: name: arXiv
Year: 2021
Subjects: subject: Econometrics (econ.EM)
subject: FOS: Economics and business

description: Recent work has highlighted the difficulties of estimating difference-in-differences models when treatment timing occurs at different times for different units. This article introduces the R package did2s which implements the estimator introduced in Gardner (2021). The article provides an approachable review of the underlying econometric theory and introduces the syntax for the function did2s. Further, the package introduces a function, event_study, that provides a common syntax for all the modern event-study estimators and plot_event_study to plot the results of each estimator.
description: 13 pages, 4 figures, 2 tables
title: The differential diagnosis between benign and malignant cystic tumors of pancreas by Spectral CT imaging
Creators: name: Wenyan, Jiang
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Abdomen
subject: Pancreas
subject: CT
subject: SPECT
subject: SPECT-CT
subject: Radiobiology
subject: Radiation therapy / Oncology
subject: Technology assessment
subject: Cancer
subject: Cysts
subject: Cancer

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Pancreatic cystic tumor is a rare clinical disease, accounting for about 2.2% ~ 15.9% of the total pancreatic tumor.However, according to the survey of recent in 10 years, its incidence increased significantly, has received the serious threat to...
title: Differences in behavior of tube current modulation techniques between single- and dual-energy CT with a second-generation dual-source scanner
Creators: name: Matsubara, Kosuke
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Radiation physics
subject: Radioprotection / Radiation dose
subject: CT
subject: Dosimetry
subject: Dosimetric comparison
subject: Quality assurance

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: A previous study compared radiation dose and image quality between single- and dual-energy CT for a given volumetric CT dose index [1]. However, to the best of our knowledge, there is no study published yet comparing behavior of tube current...
Rotations by roots of unity and Diophantine approximation
Creators: name: Malikiosis, Romanos-Diogenes
Publisher: name: arXiv
Year: 2015
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11J71

description: For a fixed integer $n$, we study the question whether at least one of the numbers $\Re Xω^k$, $1\leq k\leq n$, is $\varepsilon$-close to an integer, for any possible value of $X\in\mathbb{C}$, where $ω$ is a primitive $n$th root of unity. It turns out that there is always a $X$ for which the above numbers are concentrated around $1/2\bmod1$. The distance from $1/2$ depends only on the local properties of $n$, rather than its magnitude. This is directly related the so-called "pyjama" problem which was solved recently.
description: 7 pages
title: The study on perfusing imaging and pulmonary angiography using dual source CT in the diagnosis of pulmonary embolism
Creators: name: Guo, Liang
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Pulmonary vessels
subject: CT-Angiography
subject: Diagnostic procedure
subject: Embolism / Thrombosis

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: To investigate the value of dual energy pulmonary perfusion and pulmonary angiography imaging using dual source CT in the diagnosis and clinical application of pulmonary artery...
title: CT-colonoscopy in planning the closure of colostomy after gunshot wounds to the abdomen.
Creators: name: Mamet'eva, Irina
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Abdomen
subject: Gastrointestinal tract
subject: CT
subject: Colonography CT
subject: Trauma

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Diagnosis of the affect after the abdominal cavity gunshot, surgical management approach are the issues of importance in the “military-civil” emergency surgery. The affects after abdominal cavity gunshot in medical losses pattern of t modern...
On the Scalability and Message Count of Trickle-based Broadcasting Schemes
Creators: name: Meyfroyt, Thomas M. M.
name: Borst, Sem C.
name: Boxma, Onno J.
name: Denteneer, Dee
Publisher: name: arXiv
Year: 2015
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences
subject: 60J05 60J20 90B18

description: As the use of wireless sensor networks increases, the need for efficient and reliable broadcasting algorithms grows. Ideally, a broadcasting algorithm should have the ability to quickly disseminate data, while keeping the number of transmissions low. In this paper, we analyze the popular Trickle algorithm, which has been proposed as a suitable communication protocol for code maintenance and propagation in wireless sensor networks. We show that the broadcasting process of a network using Trickle can be modeled by a Markov chain and that this chain falls under a class of Markov chains, closely related to residual lifetime distributions. It is then shown that this class of Markov chains admits a stationary distribution of a special form. These results are used to analyze the Trickle algorithm and its message count. Our results prove conjectures made in the literature concerning the effect of a listen-only period. Besides providing a mathematical analysis of the algorithm, we propose a generalized version of Trickle, with an additional parameter defining the length of a listen-only period.
description: arXiv admin note: substantial text overlap with arXiv:1407.6034
Remarks on the functional equation $f(x+1)=g(x)f(x)$ and a uniqueness theorem for the gamma function
Creators: name: Hooshmand, M. H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: The topic of gamma type functions and related functional equation $f(x+1)=g(x)f(x)$ has been seriously studied from first half of the twentieth century till now. Regarding unique solutions of the equation the asymptotic condition $\displaystyle{\lim_{x \to \infty}}\frac{g(x+w)}{g(x)}=1$, for each $w>0$, is considered in many serial papers including R. Webster's article (1997). Motivated by the topic of limit summability of real functions (introduced by the author in 2001), we first show that the asymptotic condition in the Webster's paper can be reduced to the convergence of the sequence $\frac{g(n+1)}{g(n)}$ to $1$, and then by removing the initial condition $f(1)=1$ we generalize it. On the other hand, Rassias and Trif proved that if $g$ satisfies another appropriate asymptotic condition, then the equation admits at most one solution $f$, which is eventually $\log$-convex of the second order. We also sow that without changing the asymptotic condition for this case, a uniqueness theorem similar to the Webster's result is also valid for eventually $\log$-convex solutions $f$ of the second order. This result implies a new uniqueness theorem for the gamma function which states the $\log$-convexity condition in the Bohr-Mollerup Theorem can be replaced by $\log$-concavity of order two. At last, some important questions about them will be asked.
Measuring the diphoton coupling of a 750 GeV resonance
Creators: name: Fichet, Sylvain
name: von Gersdorff, Gero
name: Royon, Christophe
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A slight excess has been observed in the first data of photon-photon events at the 13 TeV LHC, that might be interpreted has a hint of physics beyond the Standard Model. We show that a completely model-independent measurement of the photon-photon coupling of a putative 750 GeV resonance will be possible using the forward proton detectors scheduled at ATLAS and CMS.
description: v2: version published in PRL
title: Cystic and pseudocystic focal liver lesions: low mechanical index contrast-enhanced sonographic findings and diagnostic performance study in characterization of nature
Creators: name: Corvino, Antonio
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Liver
subject: Contrast agents
subject: Abdomen
subject: Ultrasound
subject: Contrast agent-intravenous
subject: Cysts
subject: Abscess
subject: Metastases

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Cystic FLLs represent a wide spectrum of lesions, including both benign and malignant ones. Consequently, the radiologist must carefully assess imaging features such as location, size, and number of the cystic lesions and evaluate their internal...
Learning to Learn Graph Topologies
Creators: name: Pu, Xingyue
name: Cao, Tianyue
name: Zhang, Xiaoyun
name: Dong, Xiaowen
name: Chen, Siheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Social and Information Networks (cs.SI)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Learning a graph topology to reveal the underlying relationship between data entities plays an important role in various machine learning and data analysis tasks. Under the assumption that structured data vary smoothly over a graph, the problem can be formulated as a regularised convex optimisation over a positive semidefinite cone and solved by iterative algorithms. Classic methods require an explicit convex function to reflect generic topological priors, e.g. the $\ell_1$ penalty for enforcing sparsity, which limits the flexibility and expressiveness in learning rich topological structures. We propose to learn a mapping from node data to the graph structure based on the idea of learning to optimise (L2O). Specifically, our model first unrolls an iterative primal-dual splitting algorithm into a neural network. The key structural proximal projection is replaced with a variational autoencoder that refines the estimated graph with enhanced topological properties. The model is trained in an end-to-end fashion with pairs of node data and graph samples. Experiments on both synthetic and real-world data demonstrate that our model is more efficient than classic iterative algorithms in learning a graph with specific topological properties.
description: Accepted at NeurIPS 2021
Time-optimal control fields for quantum systems with multiple avoided crossings
Creators: name: Poggi, P. M.
name: Lombardo, F. C.
name: Wisniacki, D. A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study time-optimal protocols for controlling quantum systems which show several avoided level crossings in their energy spectrum. The structure of the spectrum allows us to generate a robust guess which is time-optimal at each crossing. We correct the field applying optimal control techniques in order to find the minimal evolution or quantum speed limit (QSL) time. We investigate its dependence as a function of the system parameters and show that it gets proportionally smaller to the well-known two-level case as the dimension of the system increases. Working at the QSL, we study the control fields derived from the optimization procedure, and show that they present a very simple shape, which can be described by a few parameters. Based on this result, we propose a simple expression for the control field, and show that the full time-evolution of the control problem can be analytically solved.
description: 11 pages, 7 figures
title: High resolution imaging of scaphoid fracture with Herbert screw treatment: comparative findings on a cadaveric wrist with digital tomosynthesis, CT, CT with iterative reconstruction and cone beam CT
Creators: name: Buls, Nico
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Trauma
subject: Education and training
subject: Experimental investigations
subject: Comparative studies
subject: CT-High Resolution
subject: Conventional radiography
subject: Cone beam CT
subject: Musculoskeletal bone
subject: Extremities

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To understand the technical differences between digital tomosynthesis, fan beam CT and cone beam CT image acquisition To understand the challenges of imaging osteosynthesis material in 3D at high spatial resolution To illustrate the value of...
Bayesian GARMA Models for Count Data
Creators: name: Andrade, Marinho G.
name: Ehlers, Ricardo S.
name: Andrade, Breno S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Generalized autoregressive moving average (GARMA) models are a class of models that was developed for extending the univariate Gaussian ARMA time series model to a flexible observation-driven model for non-Gaussian time series data. This work presents Bayesian approach for GARMA models with Poisson, binomial and negative binomial distributions. A simulation study was carried out to investigate the performance of Bayesian estimation and Bayesian model selection criteria. Also three real datasets were analysed using the Bayesian approach on GARMA models.