cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quotients, automorphisms and differential operators
Creators: name: Schwarz, Gerald W.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Group Theory (math.GR)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 20G20, 22E46, 57S15

description: Let $V$ be a $G$-module where $G$ is a complex reductive group. Let $Z:=\quot VG$ denote the categorical quotient and let $π\colon V\to Z$ be the morphism dual to the inclusion $Ø(V)^G\subsetØ(V)$. Let $ϕ\colon Z\to Z$ be an algebraic automorphism. Then one can ask if there is an algebraic map $Φ\colon V\to V$ which lifts $ϕ$, i.e., $π(Φ(v))=ϕ(π(v))$ for all $v\in V$. In \cite{Kuttler} the case is treated where $V=r\lieg$ is a multiple of the adjoint representation of $G$. It is shown that, for $r$ sufficiently large (often $r\geq 2$ will do), any $ϕ$ has a lift. We consider the case of general representations (satisfying some mild assumptions). It turns out that it is natural to consider holomorphic lifting of holomorphic automorphisms of $Z$, and we show that if a holomorphic $ϕ$ and its inverse lift holomorphically, then $ϕ$ has a lift $Φ$ which is an automorphism such that $Φ(gv)=σ(g)Φ(v)$, $v\in V$, $g\in G$ where $σ$ is an automorphism of $G$. We reduce the lifting problem to the group of automorphisms of $Z$ which preserve the natural grading of $Ø(Z)\simeqØ(V)^G$. Lifting does not always hold, but we show that it always does for representations of tori in which case algebraic automorphisms lift to algebraic automorphisms. We extend Kuttler's methods to show lifting in case $V$ contains a copy of $\lieg$.
description: 23 pages, minor revisions. To appear in J. London Math. Society
Advancements in measuring bed load transport with a magnetic detection system
Creators: name: Argast, Timothy
Publisher: name: University of British Columbia
Year: 2012

description: A large number of bed load measuring devices have been developed in order to estimate sediment transport in rivers. In spite of that, the geomorphic and engineering communities do not have a reliable method to estimate bed material load. Available techniques suffer from insufficient temporal and spatial resolution to capture the variability inherent in bed load movement. This work involves the design and construction of an in situ magnetic detection device, which shows promise as a method capable of overcoming these limitations. The sensors work by inducing a magnetic dipole in naturally magnetic stones via magnets installed in the bed of the channel. These stones then pass over a coil of wire, inducing a small voltage, which is recorded. The system is installed in a five meter flume and is calibrated using video based particle tracking as well as manual sediment collection and sieving. Initial results indicate the new design performs significantly better than its predecessor.
Aspidapion (Aspidapion) validum
Creators: name: Ghahari, Hassan
name: Colonnelli, Enzo
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Brentidae
Aspidapion
Aspidapion validum

description: Aspidapion (Aspidapion) validum (Germar, 1817)
Distribution in Iran. East Azarbaijan (Legalov et al. 2010), West Azarbaijan (Borumand 1998; Modarres Awal 2012, both as Apion (Aspidapion) validum).
General distribution. Algeria, Armenia, Austria, Azerbaijan, Bulgaria, northwestern China, Czech Republic, Georgia, Germany, Greece, Hungary, Iran, Italy, Kazakhstan, Kyrgyzstan, Luxembourg, Poland, Romania, south European Russia, west Siberia, Slovakia, Slovenia, Switzerland, Syria, Tadzhikistan, Turkey, Turkmenistan, Ukraine, Uzbekistan.
description: Published as part of Ghahari, Hassan & Colonnelli, Enzo, 2020, An annotated checklist of the Iranian Brentidae (Coleoptera: Curculionoidea), pp. 151-178 in Zootaxa 4759 (2) on page 156, DOI: 10.11646/zootaxa.4759.2.1, http://zenodo.org/record/3737365
title: The impact of being overweight on image quality when undertaking adult chest X-ray examinations using routine protocols
Creators: name: England, Andrew
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Thorax
subject: Digital radiography
subject: Physics
subject: Technology assessment
subject: Quality assurance
subject: Workforce

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The number of overweight and obese people has increased rapidly over recent years in numerous countries [1]. In radiography, problems frequently rise with imaging obese patients and there is an associated increase in radiation dose and image quality...
title: Imaging pearls to differentiate interstitial lung disease
Creators: name: Alshehri, Mohammed
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: CT
subject: Thorax
subject: Image compression
subject: Education and training

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To recognize the different types of interstitial lung diseases, their clinical presentation, and causes. Describe the imaging findings associated with interstitial lung disease, their appearance in conventional radiology and computed tomography....
title: Radiation awareness amongst junior doctors in a London Teaching Hospital
Creators: name: Al-Obudi, Yasser
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Workforce
subject: Quality assurance
subject: Education and training
subject: Safety
subject: Radiation safety
subject: Education
subject: Ultrasound
subject: Nuclear medicine conventional
subject: CT
subject: Radioprotection / Radiation dose

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Radiological investigations have become an essential part of clinical medicine, resulting in a substantial increase in the use of modalities that utilise ionising radiation. In 2017, 4.6 million CT scans were performed in England; an increase of 3...
Integral geometry of complex space forms
Creators: name: Bernig, Andreas
name: Fu, Joseph H. G.
name: Solanes, Gil
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C65

description: We show how Alesker's theory of valuations on manifolds gives rise to an algebraic picture of the integral geometry of any Riemannian isotropic space. We then apply this method to give a thorough account of the integral geometry of the complex space forms, i.e. complex projective space, complex hyperbolic space and complex euclidean space. In particular, we compute the family of kinematic formulas for invariant valuations and invariant curvature measures in these spaces. In addition to new and more efficient framings of the tube formulas of Gray and the kinematic formulas of Shifrin, this approach yields a new formula expressing the volumes of the tubes about a totally real submanifold in terms of its intrinsic Riemannian structure. We also show by direct calculation that the Lipschitz-Killing valuations stabilize the subspace of invariant angular curvature measures, suggesting the possibility that a similar phenomenon holds for all Riemannian manifolds. We conclude with a number of open questions and conjectures.
description: 68 pages; minor changes
title: Equilibrium CT texture analysis for the evaluation of hepatic fibrosis: preliminary validation against histopathology and extracellular volume fraction
Creators: name: Yeung, Chit Sum Jason
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Computer Applications-Detection, diagnosis
subject: Diagnostic procedure
subject: Contrast agent-intravenous
subject: CT-Quantitative
subject: Liver
subject: Cirrhosis

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Chronic liver disease (CLD) is a major public health issue (1) with an estimated 1.29 million deaths around the world in 2010 from viral hepatitis alone (2). Irrespective of the aetiology, continued liver injury leads to fibrosis and eventually...
Duality and Distance Formulas in Spaces Defined by Means of Oscillation
Creators: name: Perfekt, Karl-Mikael
Publisher: name: arXiv
Year: 2011
Subjects: subject: Functional Analysis (math.FA)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: For the classical space of functions with bounded mean oscillation, it is well known that VMO** = BMO and there are many characterizations of the distance from a function f in BMO to VMO. When considering the Bloch space, results in the same vein are available with respect to the little Bloch space. In this paper such duality results and distance formulas are obtained by pure functional analysis. Applications include general Möbius invariant spaces such as Q_K-spaces, weighted spaces, Lipschitz-Hölder spaces and rectangular BMO of several variables.
title: Klimakooperation mit Schwellenländern vertiefen: CO2-Differenzverträge leisten wichtigen Beitrag
Creators: name: Lüpke, Heiner Von
name: Marchewitz, Catherine
name: Neuhoff, Karsten
name: Aebischer, Charlotte
name: Kröger, Mats
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2022
Subjects: subject: Q40 Energy: General
subject: Q41 Energy: Demand and Supply
subject: Q42 Alternative Energy Sources
subject: Q48 Energy: Government Policy
subject: climate policy
subject: international climate finance
subject: cooperation
subject: decarbonisation

description: Um emissionsintensive Industriesektoren zu dekarbonisieren und die Erderwärmung auf maximal 1,5 Grad zu begrenzen, müssen Industriestaaten und Schwellenländer kooperieren. Deutschland und die übrigen Staaten der G7 haben sich dazu verpflichtet, die Schwellen- und Entwicklungsländer bei ihren Klimaschutzanstrengungen durch internationale Klimafinanzierung zu unterstützen. Allerdings ist offen, wie die Umsetzung gelingen kann. Aktuell werden diverse Klimakooperationsinitiativen wie Klimaclubs, Klimapartnerschaften und Allianzen diskutiert, die eine Grundlage für Klimafinanzierung bieten können. Für Industriestaaten und Schwellenländer bestehen jedoch nicht dieselben Anreize, derartige Kooperationen einzugehen. Im Zentrum des Diskurses über internationale Klimakooperation in Form von Klimaclubs stehen aktuell CO2-Preise, ein CO2-Grenzausgleich sowie Anreize für eine Mitgliedschaft und Sanktionen bei Nichterfüllung der selbstgesteckten Regeln. Eine finanziell-technische Unterstützung der Schwellenländer als wichtige klimapolitische Partner wird in den Debatten bislang nicht ausreichend diskutiert. Aufbauend auf Befragungen von VertreterInnen des Stahlsektors, des Finanzsektors, internationaler Organisationen und Think Tanks sowohl der Europäischen Union als auch von Schwellenländern analysiert dieser Beitrag bestehende Lücken in der Zusammenarbeit. Zudem wird erörtert, wie internationale CO2-Differenzverträge (Carbon Contracts for Difference – CCfD) als Finanzierungsinstrument dabei die Dekarbonisierung der Stahlindustrie durch gemeinschaftliche Deckung der entstehenden Mehrkosten durch Geber- und Empfängerländer unterstützen können.
description: DIW Wochenbericht, 89 (2022), 38, S. 487-493
Creation of entangled states in coupled quantum dots via adiabatic rapid passage
Creators: name: Creatore, Celestino
name: Brierley, Richard T.
name: Phillips, Richard T.
name: Littlewood, Peter B.
name: Eastham, Paul R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Quantum state preparation through external control is fundamental to established methods in quantum information processing and in studies of dynamics. In this respect, excitons in semiconductor quantum dots (QDs) are of particular interest since their coupling to light allows them to be driven into a specified state using the coherent interaction with a tuned optical field such as an external laser pulse. We propose a protocol, based on adiabatic rapid passage, for the creation of entangled states in an ensemble of pairwise coupled two-level systems, such as an ensemble of QD molecules. We show by quantitative analysis using realistic parameters for semiconductor QDs that this method is feasible where other approaches are unavailable. Furthermore, this scheme can be generically transferred to some other physical systems including circuit QED, nuclear and electron spins in solid-state environments, and photonic coupled cavities.
description: 10 pages, 2 figures. Added reference, minor changes. Discussion, results and conclusions unchanged
title: Excluding cerebral venous thrombosis: Is an unenhanced CT head sufficient?
Creators: name: Berg, Adam
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Embolism / Thrombosis
subject: Diagnostic procedure
subject: CT-Angiography
subject: CT
subject: Vascular
subject: Neuroradiology brain
subject: Emergency

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Cerebral venous thrombosis (CVT) is a rare condition which has a nonspecific presentation, thus a large number of negative CT intracranial venogram (CTV) examinations are performed. Recently published evidence suggested that unenhanced CT Head (CTH)...
Experiences of families living in rural and remote British Columbia with a child with a disability or developmental delay
Creators: name: Stewart, Mary
Publisher: name: University of British Columbia
Year: 2012

description: The primary purpose of this study was to gain a deeper understanding and describe the unique experience of raising a child with a disability or developmental delay when the family lives in a rural or remote community, from the perspective of the parent. Symbolic interactionism theory served as the framework for the study that used ethnographic methodology to explore the experiences of parents in the distinct culture of rural and remote communities. Data collection included two face-to-face semi-structured interviews with eight parents living in four rural communities in BC. Data were categorized, and analyzed using a systematic approach. The analysis generated 13 subthemes that included exploration of topics such as: rural versus remote, the value of Interpersonal relationships, intense emotions, construction of disability, travel considerations and issues, financial burden, and service providers. These subthemes were then clustered under three broad themes which included: community experiences, parenting experiences, and family experiences. The parents in this study raising a child with a disability or developmental delay identified their communities as small towns which included values such as opportunities to participate in outdoor, recreational experiences as well as the importance of strong interpersonal relationships with community members including the professionals that work with them and their child. The experience of having a child with a diagnosed disability or developmental delay was expressed as intensely emotional but the experience of parenting can be different if your child has a diagnosis versus the ongoing pursuit of obtaining developmental information. Distance to medical services plays a significant role in the experiences of these parents. Access to services impacts timely pre-natal and diagnostic information. There is an increase in the financial burden due to the necessity of frequency of travel, increased costs to access resources and additional costs incurred when spending significant amounts of time away from home. Babies are born outside of local community and family separation may be prolonged if ongoing medical intervention is required. The local service provider, the Infant Development Consultant plays a significant role in creating a strong working alliance with parents as well as facilitating linkages to necessary services and supports.
Fractional Chern Insulators beyond Laughlin states
Creators: name: Liu, Tianhan
name: Repellin, C.
name: Bernevig, B. Andrei
name: Regnault, N.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report the first numerical observation of composite fermion (CF) states in fractional Chern insulators (FCI) using exact diagonalization. The ruby lattice Chern insulator model for both fermions and bosons exhibits a clear signature of CF states at filling factors 2/5 and 3/7 (2/3 and 3/4 for bosons). The topological properties of these states are studied through several approaches. Quasihole and quasielectron excitations in FCI display similar features as their fractional quantum hall (FQH) counterparts. The entanglement spectrum of FCI groundstates shows an identical fingerprint to its FQH partner. We show that the correspondence between FCI and FQH obeys the emergent symmetry already established, proving the validity of this approach beyond the clustered states. We investigate other Chern insulator models and find similar signatures of CF states. However, some of these systems exhibit strong finite size effects.
description: 9 pages with supplementary material, 13 figures, published version
title: DIAGNOSTIC REFERENCE LEVELS FOR ADULT ANTEROPOSTERIOR AND LATERAL LUMBAR SPINE X-RAY using EIGHT (8) X-RAY UNIT IN kAMPALA, UGANDA.
Creators: name: Openy, Betty
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Image verification
subject: Physics
subject: Conventional radiography
subject: Radioprotection / Radiation dose

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: General objective: To establish the diagnostic reference levels for adult AP and lateral lumbar spine x-ray examination in Kampala Specific objectives ; 1. To determine the mean ESDs of adult patients undergoing AP and lateral lumbar spine x-ray...
A dark matter interpretation for the ARCADE excess?
Creators: name: Fornengo, N.
name: Lineros, R.
name: Regis, M.
name: Taoso, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The ARCADE 2 Collaboration has recently measured an isotropic radio emission which is significantly brighter than the expected contributions from known extra-galactic sources. The simplest explanation of such excess involves a "new" population of unresolved sources which become the most numerous at very low (observationally unreached) brightness. We investigate this scenario in terms of synchrotron radiation induced by WIMP annihilations or decays in extragalactic halos. Intriguingly, for light-mass WIMPs with thermal annihilation cross-section, and fairly conservative clustering assumptions, the level of expected radio emission matches the ARCADE observations.
description: 5 pages, 3 figures. v2: one benchmark model added, comments and references expanded, to appear in PRL
title: Role of Magnetic Resonance Imaging (MRI) in assessment of vascular thoracoabdominal emergencies
Creators: name: Pereira, Maria
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Education and training
subject: Computer Applications-3D
subject: MR-Angiography
subject: MR
subject: Vascular
subject: Thorax
subject: Abdomen

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To demonstrate the imaging aspects of the vascular thoracoabdominal emergencies, such as aortic dissection, aneurysms, arterial disruption and occlusive diseases, venous thrombosis, pulmonary hypertension and others using high field Magnetic...
Debris Flows in Direct Dark Matter Searches-The modulation effect
Creators: name: Vergados, J. D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The effect of some possible non standard WIMP velocity distributions, like the Debris Flows recently proposed, on the direct dark matter detection rates is investigated. We find that such distributions may be deciphered from the data, especially if the time variation of the event rates due to the annual motion of the Earth is observed
description: 15 pages, 14 figures. Expanded version, references added. To appear in PRD. arXiv admin note: text overlap with arXiv:1108.4768
Flux-charge duality and topological quantum phase fluctuations in quasi-one-dimensional superconductors
Creators: name: Kerman, Andrew J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: It has long been thought that macroscopic phase coherence breaks down in effectively lower-dimensional superconducting systems even at zero temperature due to enhanced topological quantum phase fluctuations. In quasi-1D wires, these fluctuations are described in terms of "quantum phase-slip" (QPS): tunneling of the superconducting order parameter for the wire between states differing by $\pm2π$ in their relative phase between the wire's ends. Over the last several decades, many deviations from conventional bulk superconducting behavior have been observed in ultra-narrow superconducting nanowires, some of which have been identified with QPS. While at least some of the observations are consistent with existing theories for QPS, other observations in many cases point to contradictory conclusions or cannot be explained by these theories. Hence, a unified understanding of the nature of QPS, and its relationship to the various observations has yet to be achieved. In this paper we present a new model for QPS which takes as its starting point an idea originally postulated by Mooij and Nazarov [Nature Physics {\bf 2}, 169 (2006)]: that \textit{flux-charge duality}, a classical symmetry of Maxwell's equations, can be used to relate QPS to the well-known Josephson tunneling of Cooper pairs. Our model provides an alternative, and qualitatively different, conceptual basis for QPS and the phenomena which arise from it in experiments, and it appears to permit for the first time a unified understanding of observations across several different types of experiments and materials systems.
description: 48 Institute of Physics pages, plus 7 pages of appendices and 7 pages of references. 12 figures. v7: additional experimental data considered, and overall improvement for final submission
title: Konsumkredite: Viele Menschen kennen ihre Zinsen nicht – Kostendarstellung beeinflusst Kreditaufnahme
Creators: name: Gipp, Antonia
name: Hamdan, Jana
name: Menkhoff, Lukas
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2022
Subjects: subject: D18 Consumer Protection
subject: Household finance
subject: consumer debt
subject: financial literacy

description: In Deutschland addieren sich die Konsumschulden der Haushalte auf ein Volumen in dreistelliger Milliardenhöhe und zeichnen sich durch sehr unterschiedliche Zinskosten aus. Viele Menschen kennen jedoch die Konditionen ihrer eigenen Kredite für Konsumzwecke nicht. Der vorliegende Bericht analysiert neue Umfragedaten zu Kenntnissen über typische Konsumschulden wie Dispo- und Konsumentenkredite. Frauen haben tendenziell seltener Kenntnisse über die Zinsen, die sie bezahlen, und verfügen über eine geringere finanzielle Bildung. Finanzbildung korreliert mit Zinswissen, ist jedoch unabhängig von einer Konsumverschuldung im Allgemeinen. Ein Experiment zeigt eine grundlegende Preissensibilität, aber auch, dass die Darstellung der Zinskosten die Kreditaufnahme beeinflusst. So führt die Angabe von monatlichen Euro-Beträgen zu einer deutlich höheren Bereitschaft, einen Konsumkredit aufzunehmen, im Vergleich zur Darstellung von jährlichen Kreditkosten. Der Verbraucherschutz bei Finanzdienstleistungen sollte diese Effekte prüfen, gegebenenfalls evidenzbasiert berücksichtigen und dann die Informationspflichten anpassen, insbesondere beim Dispokredit. Die Forschungsergebnisse motivieren außerdem zu mehr Initiativen zur Finanzbildung, insbesondere bei Frauen.
description: DIW Wochenbericht, 89 (2022), 37, S. 472-481
One-dimensional lattice of oscillators coupled through power-law interactions: Continuum limit and dynamics of spatial Fourier modes
Creators: name: Gupta, Shamik
name: Potters, Max
name: Ruffo, Stefano
Publisher: name: arXiv
Year: 2012
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study synchronization in a system of phase-only oscillators residing on the sites of a one-dimensional periodic lattice. The oscillators interact with a strength that decays as a power law of the separation along the lattice length and is normalized by a size-dependent constant. The exponent $α$ of the power law is taken in the range $0 \le α<1$. The oscillator frequency distribution is symmetric about its mean (taken to be zero), and is non-increasing on $[0,\infty)$. In the continuum limit, the local density of oscillators evolves in time following the continuity equation that expresses the conservation of the number of oscillators of each frequency under the dynamics. This equation admits as a stationary solution the unsynchronized state uniform both in phase and over the space of the lattice. We perform a linear stability analysis of this state to show that when it is unstable, different spatial Fourier modes of fluctuations have different stability thresholds beyond which they grow exponentially in time with rates that depend on the Fourier modes. However, numerical simulations show that at long times, all the non-zero Fourier modes decay in time, while only the zero Fourier mode (i.e., the "mean-field" mode) grows in time, thereby dominating the instability process and driving the system to a synchronized state. Our theoretical analysis is supported by extensive numerical simulations.
description: 7 pages, 4 figures. v2: new simulation results added, close to the published version
Gamma-Ray Bursts: the Isotropic-Equivalent-Energy Function and the Cosmic Formation Rate
Creators: name: Wu, Shi-Wei
name: Xu, Dong
name: Zhang, Fu-Wen
name: Wei, Da-Ming
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Gamma-ray bursts (GRBs) are brief but intense emission of soft $γ-$rays, mostly lasting from a few seconds to a few thousand seconds. For such kind of high energy transients, their isotropic-equivalent-energy ($E_{\rm iso}$) function may be more scientifically meaningful when compared with GRB isotropic-equivalent-luminosity function ($L_{\rm iso}$), as the traditional luminosity function refers to steady emission much longer than a few thousand seconds. In this work we for the first time construct the isotropic-equivalent-energy function for a sample of 95 bursts with measured redshifts ($z$) and find an excess of high-$z$ GRBs. Assuming that the excess is caused by a GRB luminosity function evolution in a power-law form, we find a cosmic evolution of $E_{\rm iso}\propto(1+z)^{1.80^{+0.36}_{-0.63}}$, which is comparable to that between $L_{\rm iso}$ and $z$, i.e., $L_{\rm iso}\propto(1+z)^{2.30^{+0.56}_{-0.51}}$ (both $1σ$). The evolution-removed isotropic-equivalent-energy function can be reasonably fitted by a broken power-law, in which the dim and bright segments are $ψ(E_{\rm iso})\propto E_{\rm iso}^{-0.27\pm0.01}$ and $ψ(E_{\rm iso})\propto E_{\rm iso}^{-0.87\pm0.07}$, respectively ($1σ$). For the cosmic GRB formation rate, it increases quickly in the region of $0 \leq z \lesssim 1$, and roughly keeps constant for $1\lesssim z \lesssim 4$, and finally falls with a power index of $-3.80\pm2.16$ for $z\gtrsim 4$, in good agreement with the observed cosmic star formation rate so far.
description: 6 pages, 10 figures. Accepted for publication in MNRAS
title: Mammographic solitary dilated duct: a pictorial essay with radiological - pathological correlation
Creators: name: Ayres, Veronica
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Mammography
subject: Breast
subject: Ultrasound
subject: Biopsy
subject: Dilatation
subject: Cancer

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: - Solitary dilated duct (SDD) visualized by mammography is a rare event . - The correlation with ultrasound (US) second look may present: ductal ectasia with homogeneous or heterogeneous content, being papilloma the main finding in heterogeneous...
Progenitor-Explosion Connection and Remnant Birth Masses for Neutrino-Driven Supernovae of Iron-Core Progenitors
Creators: name: Ugliano, Marcella
name: Janka, H. -Thomas
name: Marek, Andreas
name: Arcones, Almudena
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We perform hydrodynamic supernova simulations in spherical symmetry for over 100 single stars of solar metallicity to explore the progenitor-explosion and progenitor-remnant connections established by the neutrino-driven mechanism. We use an approximative treatment of neutrino transport and replace the high-density interior of the neutron star (NS) by an inner boundary condition based on an analytic proto-NS core-cooling model, whose free parameters are chosen such that explosion energy, nickel production, and energy release by the compact remnant of progenitors around 20 solar masses are compatible with Supernova 1987A. Thus we are able to simulate the accretion phase, initiation of the explosion, subsequent neutrino-driven wind phase for 15-20 s, and the further evolution of the blast wave for hours to days until fallback is completed. Our results challenge long-standing paradigms. We find that remnant mass, launch time, and properties of the explosion depend strongly on the stellar structure and exhibit large variability even in narrow intervals of the progenitors' zero-age-main-sequence mass. While all progenitors with masses below about 15 solar masses yield NSs, black hole (BH) as well as NS formation is possible for more massive stars, where partial loss of the hydrogen envelope leads to weak reverse shocks and weak fallback. Our NS baryonic masses of ~1.2-2.0 solar masses and BH masses >6 solar masses are compatible with a possible lack of low-mass BHs in the empirical distribution. Neutrino heating accounts for SN energies between some 10^{50} erg and about 2*10^{51} erg, but can hardly explain more energetic explosions and nickel masses higher than 0.1-0.2 solar masses. These seem to require an alternative SN mechanism.
description: 10 pages, 6 figures (7 eps files); extended version to account for referee comments and questions; accepted by Astrophys. J
Presagios, prodigios o tetzáhuitl de la Conquista de México: una aproximación histórica y ritual
Creators: name: Lejarazu, Manuel A. Hermann
Publisher: name: figshare
Year: 2021
Subjects: History

description: Dado el enorme interés que ha despertado el estudio de los presagios o tetzáhuitl vinculados a la Conquista de México, el presente artículo busca correlacionar el sentido interno del tetzáhuitl no como un signo de augurio, sino como la manifestación de los temores y miedos que experimentaba la persona al estar frente a un fenómeno prodigioso. De esta manera se analizarán los prodigios que dieron origen a la presencia divina en dos contextos diferentes, el prodigio en la antigua Roma del período de la República y el tetzáhuitl en la gran Tenochtitlán de principios del siglo XVI. /Given the enormous interest that the study of omens or tetzahuitl linked to the Conquest Mexico has aroused, this article seeks to correlate the internal meaning of the tetzahuitl not as an omen, but as the manifestation of the fears that the individual suffered when facing a prodigious phenomenon. In this way, the prodigies that gave rise to the divine presence in two different contexts will be analyzed: the prodigy in ancient Rome of the Republic period and the tetzahuitl in the great Tenochtitlan of the early 16th century.
title: Posterior fossa cystic lesions in brain MRI in children – pictorial review
Creators: name: Neska-Matuszewska, Malgorzata
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Neoplasia
subject: Cysts
subject: Congenital
subject: Localisation
subject: Education
subject: MR
subject: Paediatric
subject: Neuroradiology brain
subject: CNS

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: 1. To recall the epidemiology and demographic characteristics of posterior fossa cystic lesions. 2. To review MRI imaging characteristics of the most common posterior fossa cystic lesions in children. 3. To describe the differential diagnosis of...
Binary Jumbled String Matching for Highly Run-Length Compressible Texts
Creators: name: Badkobeh, Golnaz
name: Fici, Gabriele
name: Kroon, Steve
name: Lipták, Zsuzsanna
Publisher: name: arXiv
Year: 2012
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences
subject: G.2.1
subject: 68W32, 68P05, 68P20

description: The Binary Jumbled String Matching problem is defined as: Given a string $s$ over $\{a,b\}$ of length $n$ and a query $(x,y)$, with $x,y$ non-negative integers, decide whether $s$ has a substring $t$ with exactly $x$ $a$'s and $y$ $b$'s. Previous solutions created an index of size O(n) in a pre-processing step, which was then used to answer queries in constant time. The fastest algorithms for construction of this index have running time $O(n^2/\log n)$ [Burcsi et al., FUN 2010; Moosa and Rahman, IPL 2010], or $O(n^2/\log^2 n)$ in the word-RAM model [Moosa and Rahman, JDA 2012]. We propose an index constructed directly from the run-length encoding of $s$. The construction time of our index is $O(n+ρ^2\log ρ)$, where O(n) is the time for computing the run-length encoding of $s$ and $ρ$ is the length of this encoding---this is no worse than previous solutions if $ρ= O(n/\log n)$ and better if $ρ= o(n/\log n)$. Our index $L$ can be queried in $O(\log ρ)$ time. While $|L|= O(\min(n, ρ^{2}))$ in the worst case, preliminary investigations have indicated that $|L|$ may often be close to $ρ$. Furthermore, the algorithm for constructing the index is conceptually simple and easy to implement. In an attempt to shed light on the structure and size of our index, we characterize it in terms of the prefix normal forms of $s$ introduced in [Fici and Lipták, DLT 2011].
description: v2: only small cosmetic changes; v3: new title, weakened conjectures on size of Corner Index (we no longer conjecture it to be always linear in size of RLE); removed experimental part on random strings (these are valid but limited in their predictive power w.r.t. general strings); v3 published in IPL
Coupling remote sensing and crop growth model to estimate national wheat yield in Ethiopia
Creators: name: Beyene, Awetahegn Niguse
name: Zeng, Hongwei
name: Wu, Bingfang
name: Zhu, Liang
name: Gebremicael, Tesfay Gebretsadkan
name: Zhang, Miao
name: Bezabh, Temesgen
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plant Biology
subject: Computational Biology

description: Estimation of crop yield at a regional level is essential for making agricultural planning and addressing food security issues in Ethiopia. Remote sensing observations, particularly the leaf area index (LAI), have a strong relationship with crop yield. This study has proposed an approach to estimate wheat yield at field level and regional scale in Ethiopia by assimilating the retrieved MODIS time-series LAI data into the WOrld FOod STudies (WOFOST) model. To improve the estimation of crop yield in the region, the Ensemble Kalman Filter (EnKF) was used to incorporate the LAI into the WOFOST model. The estimation accuracy of wheat crop yield was validated using field-measured yields collected during the 2018 growing season. Our findings indicated that wheat yield was more precisely estimated by WOFOST (at water-limited mode) with EnKF algorithm (R2 = 0.80 and RMSE = 413 kg ha−1) compared to that of without assimilating remotely sensed LAI (R2 = 0.58, RMSE = 592 kg ha−1). These results demonstrated that assimilating MODIS-LAI into WOFOST has high potential and practicality to give a reference for wheat yield estimation. The findings from this study can provide information to policy, decision-makers, and other similar sectors to implement an appropriate and timely yield estimation measure.
title: Cholecystectomy or percutaneous cholecystostomy as treatment for acute acalculous cholecystitis: 12 years of experience
Creators: name: Vicente Zapata, Irene
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Biliary Tract / Gallbladder
subject: Interventional non-vascular
subject: Emergency
subject: Percutaneous
subject: Ultrasound
subject: Catheters
subject: Drainage
subject: Surgery
subject: Infection
subject: Inflammation
subject: Outcomes

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Acute Acalculous cholecystitis is rare, accounting for less than 10% of acute cholecystitis cases. It frequently develops in elderly patients and also as a complication in critically ill patients being treated for other medical conditions, systemic...
The infimum of the Nijenhuis energy
Creators: name: Evans, Jonathan David
Publisher: name: arXiv
Year: 2011
Subjects: subject: Symplectic Geometry (math.SG)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53D05, 32Q60, 58E11

description: We prove that on any symplectic manifold whose symplectic form represents a rational cohomology class there exists a sequence of compatible almost complex structures whose Nijenhuis energy (the $L^2$-norm of the Nijenhuis tensor) tends to zero. The sequence is obtained by stretching the neck around a Donaldson hypersurface.
description: 6 pages; updated with minor corrections to agree with published version
A new platform for studying human balance control : design, validation, and experiments
Creators: name: Huryn, Thomas Peter
Publisher: name: University of British Columbia
Year: 2012

description: This thesis provides insight and novel tools for investigation into the neuromotor control of human standing balance. To maintain upright standing, the human body integrates sensory inputs and activates lower limb muscles in a coordinated manner. Balance control mechanisms are not well understood, largely due to the lack of experimental tools. Existing devices modify sensory information or mechanically disturb the body; however, both approaches can induce unnatural corrective responses. One approach that does not perturb normal control mechanisms is to allow humans to balance in an immersive physics simulator, but no appropriate tool has been available. Furthermore, control models that describe unperturbed (quiet) standing are typically evaluated in computer simulations and rarely experimentally tested by activating human muscles. This thesis presents two studies that seek to answer the questions: a) Can we engage humans in an immersive balancing task decoupled from their body mechanics? b) Which control models accurately characterize standing balance? The first study validates the design of a novel robotic system that enables subjects to safely balance according to a programmable physical model. When programmed with a subject’s own body mechanics, results show that the torque-angle relationship (load stiffness) is similar to that of normal standing, and that load stiffness increases, as expected, with increasing sway frequency. By providing decoupled control over balance physics, this system enables novel investigations into the neural mechanisms of human standing. The second study evaluates proposed control models for quiet standing within a control loop that stimulates human muscle actuation. Two factors differentiate the models: activation type and delay-reducing prediction. All evaluated models successfully balance in the absence of natural muscle activation but increase corrective activity and mechanical effort relative to natural standing. Intermittent activation reduces stimulation energy but increases sway. Prediction reduces sway for the intermittent case only. To develop more accurate control models, future work is recommended to reduce sway during intermittent activation, reduce feedback gains, increase predictor compensation, and vary the setpoint angle. This work contributes to the understanding of balance neurophysiology and may lead to improved control models for body movement in healthy and balance-impaired individuals.
title: Um mit einer Gasmangellage umzugehen, müssen Haushalte 20 bis 30 Prozent Gas einsparen: Interview
Creators: name: Neuhoff, Karsten
name: Wittenberg, Erich
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2022

description: DIW Wochenbericht, 89 (2022), 36, S. 464
title: Situs Anomalies: clinical features and imaging findings
Creators: name: Pereira, Maria
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Education and training
subject: Education
subject: CT
subject: Thorax
subject: Anatomy
subject: Abdomen

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Rise the awareness and familiarity about the spectrum of lateralization disorders and review imaging appearances of this conditions through a pictorial review ilustrated with selected cases from the electronic health record database of our...
Non-equilibrium dynamics of the Tavis-Cummings model
Creators: name: Barmettler, Peter
name: Fioretto, Davide
name: Gritsev, Vladimir
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In quantum many-body theory no generic microscopic principle at the origin of complex dynamics is known. Quite opposed, in classical mechanics the theory of non-linear dynamics provides a detailed framework for the distinction between near-integrable and chaotic systems. Here we propose to describe the off-equilibrium dynamics of the Tavis-Cummings model by an underlying classical Hamiltonian system, which can be analyzed using the powerful tools of classical theory of motion. We show that scattering in the classical phase space can drive the quantum model close to thermal equilibrium. Interestingly, this happens in the fully quantum regime, where physical observables do not show any dynamic chaotic behavior.
description: 4 pages, 3 figures
title: High Grade B-cell Lymphoma (HGBL) Imaging in Abdomen/Pelvis. What The Radiologist Needs To Know
Creators: name: El Noueam, Khaled
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Neoplasia
subject: Haematologic diseases
subject: Cancer
subject: Molecular imaging
subject: PET-CT
subject: MR
subject: CT
subject: Nuclear medicine
subject: Haematologic
subject: Gastrointestinal tract

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: •High-grade B-cell lymphoma (HGBL) are aggressive malignancies formed by dense proliferation of B-blasts, currently constitute a separate entity in the updated 2016 WHO classification for lymphoid tumors •Incidence of HGBL has steadily increased...
title: Qualitative and quantitative comparison of ultrahigh b2000 versus standard b1000 diffusion-weighted imaging in rectal cancer
Creators: name: Caposiena, Daniele
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Surgery
subject: Radiation therapy / Oncology
subject: MR-Diffusion/Perfusion
subject: MR
subject: Pelvis
subject: Gastrointestinal tract
subject: Abdomen
subject: Comparative studies
subject: Neoplasia

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: To investigate the potential benefit of ultrahigh b-value DWI in rectal cancer by qualitatively and quantitatively comparing b=1000 s/mm2 (b1000) and b=2000s/mm2 (b2000) DWI for the detectability and conspicuity of rectal tumors, using a 3T state...
Fluid/gravity duality with Petrov-like boundary condition in a spacetime with a cosmological constant
Creators: name: Huang, Tai-Zhuo
name: Ling, Yi
name: Pan, Wen-Jian
name: Tian, Yu
name: Wu, Xiao-Ning
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Recently it has been shown that imposing Petrov type I condition on the boundary may reduce the Einstein's equation to the Navier-Stokes equation in the non-relativistic and near-horizon limit. In this paper we extend this framework to a spacetime with a cosmological constant. By explicit construction we show that the Navier-Stokes equation can be derived from both black brane background and spatially curved spacetime. We also conjecture that imposing Petrov type I condition on the boundary should be equivalent to the conventional method using the hydrodynamical expansion of the metric in the near horizon limit.
description: 14 pages; Version published in PRD
Comment on a PREreview of "Comparative mortality of dominantStaphylococcus aureuslineages in human bacteremia and animal infection models"
Creators: name: Lawngreen Bird
Publisher: name: Zenodo
Year: 2025

description: This Zenodo record is a permanently preserved version of a comment on a PREreview. You can view the complete PREreview and comments at https://prereview.org/reviews/15101338.

Reviewed by:
Emerson Fernando Balan
Felipe Mendes Perez Zorzi
Laura Bianco Bolonhezi

Competing interests

            The author of this comment declares that they have no competing interests.