cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Assessment of liver steatosis with CT in obese patients. Work in progress.
Creators: name: Konstantatou, Eleni
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Inflammation
subject: Computer Applications-General
subject: Computer Applications-Detection, diagnosis
subject: CT
subject: Liver

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: Non alcoholic fatty liver disease (NAFLD) represents the first hit in a multistep process which spans from simple accumulation of fat in the hepatocytes to severe fibrosis and cirrhosis. It has also been found to be related to obesity, to excess...
ENHANCING FISHERIES ENTERPRISES: A CASE STUDY OF BAMBOO FISH CAGES IN KLOJEN, MALANG
Creators: name: MIMIT PRIMYASTANTO
name: SUPRIYADI SUPRIYADI
name: KURNIA SADA HARAHAP
name: MARIANA SARI
name: ROSLINDAH DAENG SIANG
Publisher: name: Zenodo
Year: 2024
Subjects: Bamboo Cage, Business Development Strategy, Food Security, SWOT.

description: Abstract

The utilization of public resources as a business area for fish cultivation represents an innovative approach that can yield benefits for entrepreneurs. This not only generates profits for business owners but also has positive impacts on the environment, as demonstrated by the improvement in the cleanliness of the utilized water bodies such as rivers. This study focuses on the fish farming enterprise carried out by the "SM" fish farming group, specifically in the expansion of fish cultivation using bamboo cages. The group's efforts result in the production of high-quality tilapia, carp, and koi fish, contributing to consumer demand fulfillment. The objectives of this research are to analyze both the non-financial and financial feasibility of the fish cultivation business within the "SM" bamboo cage group and to assess strategies for its further development. The analytical methods employed include non-financial feasibility analysis, financial feasibility analysis, and SWOT analysis. The non-financial feasibility analysis indicates that the fish farming group "SM" meets the criteria, making it feasible for continuation. In the short-term financial analysis, the Return over Cost (R/C) ratio is 1.96, with a profit of Rp703,221,000, a Return on Equity Capital (REC) of 91.89%, and a Break Even Point (BEP) sales of Rp145,412,915. In the long-term financial feasibility, the Net Present Value (NPV) is Rp3,767,460,000, the Benefit-Cost Ratio (B/C) is 11.29, the Internal Rate of Return (IRR) is 211%, the Payback Period (PP) is 6 months and 11 days, and the sensitivity analysis suggests that the bamboo cage business is not sensitive. The strategic analysis places the enterprise in quadrant I, indicating a favorable situation with strengths and opportunities to be leveraged, aligning with a Strength-Opportunity (SO) strategy for further business development, supported by a Growth-Oriented Strategy.
On optimal decay estimates for ODEs and PDEs with modal decomposition
Creators: name: Achleitner, Franz
name: Arnold, Anton
name: Signorello, Beatrice
Publisher: name: arXiv
Year: 2018
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q82, 35B40, 34D05, 37B25

description: We consider the Goldstein-Taylor model, which is a 2-velocity BGK model, and construct the "optimal" Lyapunov functional to quantify the convergence to the unique normalized steady state. The Lyapunov functional is optimal in the sense that it yields decay estimates in $L^2$-norm with the sharp exponential decay rate and minimal multiplicative constant. The modal decomposition of the Goldstein-Taylor model leads to the study of a family of 2-dimensional ODE systems. Therefore we discuss the characterization of "optimal" Lyapunov functionals for linear ODE systems with positive stable diagonalizable matrices. We give a complete answer for optimal decay rates of 2-dimensional ODE systems, and a partial answer for higher dimensional ODE systems.
description: 4 figures
Quantum Monte Carlo calculations of two neutrons in finite volume
Creators: name: Klos, P.
name: Lynn, J. E.
name: Tews, I.
name: Gandolfi, S.
name: Gezerlis, A.
name: Hammer, H. -W.
name: Hoferichter, M.
name: Schwenk, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Ab initio calculations provide direct access to the properties of pure neutron systems that are challenging to study experimentally. In addition to their importance for fundamental physics, their properties are required as input for effective field theories of the strong interaction. In this work, we perform auxiliary-field diffusion Monte Carlo calculations of the ground and first excited state of two neutrons in a finite box, considering a simple contact potential as well as chiral effective field theory interactions. We compare the results against exact diagonalizations and present a detailed analysis of the finite-volume effects, whose understanding is crucial for determining observables from the calculated energies. Using the Lüscher formula, we extract the low-energy S-wave scattering parameters from ground- and excited-state energies for different box sizes.
description: 11 pages, 8 figures
title: A particular aspect of the spleen in children with infectious diseases
Creators: name: D'andrea, Maria
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Abdomen
subject: Ultrasound-Colour Doppler
subject: Efficacy studies
subject: Infection

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: To describe the peculiar sonographic appearance of spleen in children with splenomegaly associated with...
A New Method to Measure Star Formation Rates in Active Galaxies Using Mid-infrared Neon Emission Lines
Creators: name: Zhuang, Ming-Yang
name: Ho, Luis C.
name: Shangguan, Jinyi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The star formation rate (SFR) is one of the most fundamental parameters of galaxies, but nearly all of the standard SFR diagnostics are difficult to measure in active galaxies because of contamination from the active galactic nucleus (AGN). Being less sensitive to dust extinction, the mid-infrared fine-structure lines of [NeII] 12.81 micron and [NeIII] 15.56 micron effectively trace the SFR in star-forming galaxies. These lines also have the potential to serve as a reliable SFR indicator in active galaxies, provided that their contribution from the AGN narrow-line region can be removed. We use a new set of photoionization calculations with realistic AGN spectral energy distributions and input assumptions to constrain the magnitude of [NeII] and [NeIII] produced by the narrow-line region for a given strength of [NeV] 14.32 micron. We demonstrate that AGNs emit a relatively restricted range of [NeII]/[NeV] and [NeIII]/[NeV] ratios. Hence, once [NeV] is measured, the AGN contribution to the low-ionization Ne lines can be estimated, and the SFR can be determined from the strength of [NeII] and [NeIII]. We find that AGN host galaxies have similar properties as compact extragalactic HII regions, which indicates that the star formation in AGN hosts is spatially concentrated. This suggests a close relationship between black hole accretion and nuclear star formation. We update the calibration of [NeII] and [NeIII] strength as a SFR indicator, explicitly considering the effects of metallicity, finding very good relations between Ne fractional abundances and the [NeIII]/[NeII] ratio for different metallicities, ionization parameters, and starburst ages. Comparison of neon-based SFRs with independent SFRs for active and star-forming galaxies shows excellent consistency with small scatter ($\sim0.18$ dex).
description: Published version
title: WHO grade I intraventricular tumors : findings in diffusion, perfusion and spectroscopy
Creators: name: Burguete, Andrea
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Neuroradiology brain
subject: MR-Spectroscopy
subject: MR-Diffusion/Perfusion
subject: Diagnostic procedure
subject: Neoplasia

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: Benign intraventricular tumors (WHO grade I) are uncommon , except for meningiomas. The imaging features of intraaxial tumors with new MRI techniques is well established, however, the appearance of benign intraventricular masses is not so well...
Francke, A.H., Segensvolle Fußstapfen
Creators: name: Padberg, Lutz Von
Publisher: name: Jahrbuch für evangelikale Theologie
Year: 2025

description: 1821137914
description: Jahrbuch für evangelikale Theologie, V. 9 (1995): Jahrbuch für evangelikale Theologie, Band 9
Derivation of the Hall and Extended Magnetohydrodynamics Brackets
Creators: name: D'Avignon, E. C.
name: Morrison, P. J.
name: Lingam, M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: There are several plasma models intermediate in complexity between ideal magnetohydrodynamics (MHD) and two-fluid theory, with Hall and Extended MHD being two important examples. In this paper we investigate several aspects of these theories, with the ultimate goal of deriving the noncanonical Poisson brackets used in their Hamiltonian formulations. We present fully Lagrangian actions for each, as opposed to the fully Eulerian, or mixed Eulerian-Lagrangian, actions that have appeared previously. As an important step in this process we exhibit each theory's two advected fluxes (in analogy to ideal MHD's advected magnetic flux), discovering also that with the correct choice of gauge they have corresponding Lie-dragged potentials resembling the electromagnetic vector potential, and associated conserved helicities. Finally, using the Euler-Lagrange map, we show how to derive the noncanonical Eulerian brackets from canonical Lagrangian ones.
description: 36 pages; 2 figures
title: Application of pattern recognition techniques to locate the Vim thalamic nucleus based on thalamocortical tractography
Creators: name: Bolis, Dimitris
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Neuroradiology brain
subject: Computer applications
subject: Interventional non-vascular
subject: MR-Diffusion/Perfusion
subject: Neural networks
subject: Experimental
subject: Computer Applications-Virtual imaging
subject: Localisation
subject: Tissue characterisation

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: The surgical treatment of neurological diseases as the Parkinson’s disease (PD) are performed mostly either by using lesion-based (thalamotomy and pallidotomy) techniques or deep brain stimulation (DBS). In both cases, the preoperative targeting...
Controlled uniform coating from the interplay of Marangoni flows and surface-adsorbed macromolecules
Creators: name: Kim, Hyoungsoo
name: Boulogne, François
name: Um, Eujin
name: Jacobi, Ian
name: Button, Ernie
name: Stone, Howard A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Surface coatings and patterning technologies are essential for various physicochemical applications. In this Letter, we describe key parameters to achieve uniform particle coatings from binary solutions: First, multiple sequential Marangoni flows, set by solute and surfactant simultaneously, prevent non-uniform particle distributions and continuously mix suspended materials during droplet evaporation. Second, we show the importance of particle-surface interactions that can be established by surface-adsorbed macromolecules. To achieve a uniform deposit in a binary mixture, a small concentration of surfactant and surface-adsorbed polymer (0.05 wt% each) is sufficient, which offers a new physicochemical avenue for control of coatings.
Bellardi, W., Die Vorstufen der Collegia pietatis bei Philipp Jakob Spener
Creators: name: Padberg, Lutz Von
Publisher: name: Jahrbuch für evangelikale Theologie
Year: 2025

description: 1821137701
description: Jahrbuch für evangelikale Theologie, V. 9 (1995): Jahrbuch für evangelikale Theologie, Band 9
Pestalozzi, K./Weigelt, H. (Hg.), Das Antlitz Gottes im Antlitz des Menschen
Creators: name: Padberg, Lutz Von
Publisher: name: Jahrbuch für evangelikale Theologie
Year: 2025

description: 1821138260
description: Jahrbuch für evangelikale Theologie, V. 9 (1995): Jahrbuch für evangelikale Theologie, Band 9
LUXE: A new experiment to study non-perturbative QED in electron-LASER and photon-LASER collisions
Creators: name: Jacobs, Ruth Magdalena
Publisher: name: Zenodo
Year: 2022

description: The LUXE experiment (LASER Und XFEL Experiment) is a new experiment in planning at DESY Hamburg using the electron beam of the European XFEL. LUXE is intended to study collisions between a high-intensity optical laser and 16.5 GeV electrons from the XFEL electron beam, as well as collisions between the optical LASER and high-energy secondary photons. The physics objective of LUXE are processes of Quantum Electrodynamics (QED) at the strong-field frontier, where the electromagnetic field of the laser is above the Schwinger limit. In this regime, QED is non-perturbative. This manifests itself in the creation of physical electron-positron pairs from the QED vacuum, similar to Hawking radiation from black holes. LUXE intends to measure the positron production rate in an unprecedented LASER intensity regime. An overview of the LUXE experimental setup and its challenges will be given, followed by a discussion of the expected physics reach in the context of testing QED in the non-perturbative regime.
High-spin structure of $^{87}$Sr and $^{87}$Zr nuclei : shell model interpretation
Creators: name: Srivastava, P. C.
name: Kumar, Vikas
name: Ermamatov, M. J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In the present work we report a comprehensive analysis of shell model results for high-spin states of $^{87}$Sr and $^{87}$Zr for recently available experimental data within the full $f_{5/2}pg_{9/2}$ model space using JUN45 and jj44b effective interactions developed for this model space. In this work we have compared the energy levels, electromagnetic transition probabilities, quadrupole and magnetic moments with available experimental data. We have confirmed structure of high-spin states of these two nuclei which were tentatively assigned in the recent experimental work. In the case of $^{87}$Sr, for positive parity states up to $\sim$ 7.5 MeV, both interactions predict very good agreement with experimental data, while negative parity states are slightly suppressed in jj44b calculation.For the $^{87}$Zr nucleus, the jj44b interaction predicts higher energies for the negative parity states beyond $J \geq 27/2^{-}$. The configuration, which have one hole in $νg_{9/2}$ orbital, is responsible for generating the states in $^{87}$Sr. In the case of $^{87}$Zr, low-lying positive parity states come with the configuration having three holes in the $νg_{9/2}$, while the odd-parity states have configuration $ν(f_{5/2}^{-1}g_{9/2}^{-2})$.
description: 14 pages,4 figures; Acta Physica Polonica B (in press)
Atmospheric noise measurements in the garden: detecting universalities in inter-spheric waiting time statistics
Creators: name: Gere, István
Publisher: name: arXiv
Year: 2024
Subjects: subject: Geophysics (physics.geo-ph)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Lightning flashes result in an instantaneous emission of electromagnetic (EM) waves that encompass a broad spectrum of frequencies in the domain of radio waves. The signature of these impulses in the region of the very low frequency (VLF) of radio waves and bellow are called spherics. These impulsive signals traverse great distances in the waveguide between the Earth's ionosphere and its surface. Due to the abundance of lightnings the lower end of the EM spectrum is dominated by the waveforms of these emission. It is called atmospheric radio noise because of its origin. This article outlines a straightforward approach for capturing spherics activity within the VLF radio wave range. Employing data processing techniques, we pinpoint the timestamps of spherics within time series data. The distribution of inter-spheric times is analyzed across various detection threshold levels. Utilizing recordings spanning two distinct years and seasons, we replicate the established form of the inter-spheric time distribution described in the literature. Notably, we demonstrate that by rescaling the time intervals between spherics with the mean time for a specific recording and given detection threshold, the distributions collapse to a master curve. This universal pattern is accurately characterized by a single-parameter mean-scaled Gamma distribution. Additionally, we note the similarities in the distribution of inter-spheric times with patterns found in earthquake recurrence times.
title: Hepatobiliary contrast enhancement using gadofosveset trisodium
Creators: name: Frydrychowicz, Alex
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Biliary Tract / Gallbladder
subject: Contrast agents
subject: Abdomen
subject: MR
subject: Cholangiography

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: Gadofosveset trisodium (Ablavar ® , Lantheus, Billerica, MA) is an intravascular gadolinium based contrast agent (GBCA) that has recently gained FDA-approval in the US for MR angiography (MRA) in aorto-iliac and suspected peripheral vascular...
Sample Complexity of Sample Average Approximation for Conditional Stochastic Optimization
Creators: name: Hu, Yifan
name: Chen, Xin
name: He, Niao
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optimization and Control (math.OC)
subject: Machine Learning (stat.ML)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: In this paper, we study a class of stochastic optimization problems, referred to as the \emph{Conditional Stochastic Optimization} (CSO), in the form of $\min_{x \in \mathcal{X}} \EE_ξf_ξ\Big({\EE_{η|ξ}[g_η(x,ξ)]}\Big)$, which finds a wide spectrum of applications including portfolio selection, reinforcement learning, robust learning, causal inference and so on. Assuming availability of samples from the distribution $\PP(ξ)$ and samples from the conditional distribution $\PP(η|ξ)$, we establish the sample complexity of the sample average approximation (SAA) for CSO, under a variety of structural assumptions, such as Lipschitz continuity, smoothness, and error bound conditions. We show that the total sample complexity improves from $\cO(d/\eps^4)$ to $\cO(d/\eps^3)$ when assuming smoothness of the outer function, and further to $\cO(1/\eps^2)$ when the empirical function satisfies the quadratic growth condition. We also establish the sample complexity of a modified SAA, when $ξ$ and $η$ are independent. Several numerical experiments further support our theoretical findings. Keywords: stochastic optimization, sample average approximation, large deviations theory
description: Typo corrected. Reference added. Revision comments handled
title: Cerebral perfusion and vasoreactivity to hypercapnia after 7 days at 4,400m altitude
Creators: name: Krainik, Alexandre
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Haemodynamics / Flow dynamics
subject: Physiological studies
subject: MR-Functional imaging
subject: MR-Diffusion/Perfusion
subject: Neuroradiology brain

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: Over the first hours of hypoxic exposure, minor changes in cerebral blood flow (CBF) are observed, depending on the net effect of hyperventilation-induced hypocapnia (i.e. a vasoconstrictor stimulus) and the level of hypoxia (i.e. a vasodilator...
title: 'Feel the artery': a novel, interactive vascular virtual environment for procedure rehearsal.
Creators: name: Gould, Derek
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Neoplasia
subject: Arteriosclerosis
subject: Aneurysms
subject: Catheters
subject: Arterial access
subject: Angioplasty
subject: Percutaneous
subject: MR
subject: CT
subject: Interventional vascular
subject: Cardiovascular system
subject: Arteries / Aorta

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: Virtual simulation is increasingly recognised as an important tool complementing the traditional apprenticeship model in the training and assessment of medical professionals. It allows patient specific rehearsal and practice, as well as objective...
Occurrence of exact $R^2$ inflation in non-local UV-complete gravity
Creators: name: Koshelev, Alexey S.
name: Modesto, Leonardo
name: Rachwal, Leslaw
name: Starobinsky, Alexei A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The $R+R^2$, shortly named "$R^2$" ("Starobinsky") inflationary model, represents a fully consistent example of a one-parameter inflationary scenario. This model has a "graceful exit" from inflation and provides a mechanism for subsequent creation and final thermalization of the standard matter. Moreover, it produces a very good fit of the observed spectrum of primordial perturbations. In the present paper we show explicitly that the $R^2$ inflationary spacetime is an exact solution of a range of weakly non-local (quasi-polynomial) gravitational theories, which provide an ultraviolet completion of the $R^2$ theory. These theories are ghost-free, super-renormalizable or finite at quantum level, and perturbatively unitary. Their spectrum consists of the graviton and the scalaron that is responsible for driving the inflation. Notably, any further extension of the spectrum leads to propagating ghost degrees of freedom. We are aimed at presenting a detailed construction of such theories in the so called Weyl basis. Further, we give a special account to the cosmological implications of this theory by considering perturbations during inflation. The highlight of the non-local model is the prediction of a modified, in comparison to a local $R^2$ model, value for the ratio of tensor and scalar power spectra $r$, depending on the parameters of the theory. The relevant parameters are under control to be successfully confronted with existing observational data. Furthermore, the modified $r$ can surely meet future observational constraints.
description: 41 pages; minor corrections and presentation improvement; matches the published version
Detector Challenges of the strong-field QED experiment LUXE at the European XFEL
Creators: name: Hallford, John
Publisher: name: Zenodo
Year: 2022

description: The LUXE experiment aims at studying high-field QED in electron-laser and photon-laser interactions, with the 16.5 GeV electron beam of the European XFEL and a laser beam with power of up to 350 TW. The experiment will measure the spectra of electrons and photons in non-linear Compton scattering where production rates in excess of 10^9 are expected per 1 Hz bunch crossing. At the same time positrons from pair creation in either the two-step trident process or the Breit-Wheeler process will be measured, where the expected rates range from 10^-3 to 10^3 per bunch crossing, depending on the laser power and focus. These measurements have to be performed in the presence of low-energy high radiation-background. To meet these challenges, for high-rate electron and photon fluxes, the experiment will use Cherenkov radiation detectors, scintillator screens, sapphire sensors as well as lead-glass monitors for backscattering off the beam-dump. A four-layer silicon-pixel tracker and a compact electromagnetic tungsten calorimeter with GaAs sensors will be used to measure the positron spectra. The layout of the experiment and the expected performance under the harsh radiation conditions will be presented.
Einstein-singleton theory and its power spectra in de Sitter inflation
Creators: name: Myung, Yun Soo
name: Moon, Taeyoon
name: Park, Young-Jai
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the Einstein-singleton theory during de Sitter inflation since it provides a way of degenerate fourth-order scalar theory. We obtain an exact solution expressed in terms of the exponential-integral function by solving the degenerate fourth-order scalar equation in de Sitter spacetime. Furthermore, we find that its power spectrum blows negatively up in the superhorizon limit, while it is negatively scale-invariant in the subhorizon limit. This suggests that the Einstein-singleton theory contains the ghost-instability and thus, it is not suitable for developing a slow-roll inflation model.
description: 1+15 pages, 3 figures, version to appear in Int. J. Mod. Phys. D
title: Small hepatocellular carcinoma 20 mm or smaller: validation of the diagnostic criteria with combined Gadoxetate disodium-enhanced MR imaging and diffusion-weighted MR imaging
Creators: name: Kim, Yi Kyung
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: MR-Diffusion/Perfusion
subject: MR
subject: Neoplasia
subject: Liver

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: To validate the usefulness of the imaging criteria established by the combined gadoxetic acid-enhanced MRI and DWI in the diagnosis of HCC of 20 mm or smaller, detected during surveillance in patients with chronic liver disease. Background of study...
Convexity at finite temperature and non-extensive thermodynamics
Creators: name: Alexandre, Jean
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Assuming that tunnel effect between two degenerate bare minima occurs, in a scalar field theory at finite volume, this article studies the consequences for the effective potential, to all loop orders. Convexity is achieved only if the two bare minima are taken into account in the path integral, and a new derivation of the effective potential is given, in the large volume limit. The effective potential has then has a universal form, it is suppressed by the space time volume, and does not feature spontaneous symmetry breaking as long as the volume is finite. The finite temperature analysis leads to surprising thermal properties, following from the non-extensive expression for the free energy. Although the physical relevance of these results is not clear, the potential application to ultra-light scalar particles is discussed.
description: 17 pages
Self-similarity in the Kepler-Heisenberg problem
Creators: name: Dods, Victor
name: Shanbrom, Corey
Publisher: name: arXiv
Year: 2019
Subjects: subject: Dynamical Systems (math.DS)
subject: Numerical Analysis (math.NA)
subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 70H12, 70F05, 53C17, 65P10

description: The Kepler-Heisenberg problem is that of determining the motion of a planet around a sun in the Heisenberg group, thought of as a three-dimensional sub-Riemannian manifold. The sub-Riemannian Hamiltonian provides the kinetic energy, and the gravitational potential is given by the fundamental solution to the sub-Laplacian. The dynamics are at least partially integrable, possessing two first integrals as well as a dilational momentum which is conserved by orbits with zero energy. The system is known to admit closed orbits of any rational rotation number, which all lie within the fundamental zero-energy integrable subsystem. Here we demonstrate that, under mild conditions, zero-energy orbits are self-similar. Consequently we find that these zero-energy orbits stratify into three families: future collision, past collision, and quasi-periodicity without collision. If a collision occurs, it occurs in finite time.
description: 11 pages, 3 figures
HEPScape: an escape room about high energy physics
Creators: name: Di Marco, Emanuele
Publisher: name: Zenodo
Year: 2022

description: Escape rooms are more and more popular nowadays. They have the challenges of a treasure hunt and represent a pleasant way to encourage team building. In addition they are a fun way to discover a new subject, a key point that can be exploited for science outreach. In 2021 a team from INFN has built an escape room about high energy physics, called HEPScape. The visitors have the impression of visiting the Large Hadron Collider at CERN and of entering one of the experimental control rooms. It makes use of projectors and posters which replicate the control room environment. Through some clues, that are hidden in the room, the visitors discover the purpose of particle accelerators and high energy physics experiments. The games can be tuned to the age group, resulting in a fun experience for all. HEPScape is made of portable equipment that can be transported and assembled in less than two hours. This allows to use it in science fairs and exhibitions. In addition it can be brought on demand to high schools in remote provinces. The material and the format of the games are simple and it is possible to replicate and translate the games in other languages. Feedback and experience from two science fairs will be presented in the talk.
The quantum origins of moment fragmentation in Nd2Zr2O7
Creators: name: Benton, Owen
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Spin-liquid states are often described as the antithesis of magnetic order. Recently, however, it has been proposed that in certain frustrated magnets the magnetic degrees of freedom may "fragment" in such a way as to give rise to a coexistence of spin liquid and ordered phases. Recent neutron-scattering results [S. Petit, E. Lhotel, B. Canals, M. Ciomaga Hatnean, J. Ollivier, H. Muttka, E. Ressouche, A. R. Wildes, M. R. Lees, and G. Balakrishnan, Nat. Phys. 12, 746 (2016)] suggest that this scenario may be realized in the pyrochlore magnet Nd2Zr2O7. These observations show the characteristic pinch-point features of a Coulombic spin liquid occurring alongside the Bragg peaks of an "all-in-all-out" ordered state. Here we explain the quantum origins of this apparent magnetic moment fragmentation, within the framework of a quantum model of nearest-neighbor exchange, appropriate to Nd2Zr2O7. This model is able to capture both the ground-state order and the pinch points observed at finite energy. The observed fragmentation arises due to the combination of the unusual symmetry properties of the Nd3+ ionic wave functions and the structure of equations of motion of the magnetic degrees of freedom. The results of our analysis suggest that Nd2Zr2O7 is proximate to a U(1) spin-liquid phase and is a promising candidate for the observation of a Higgs transition in a magnetic system.
description: 6 pages, 4 figures. Published version. Results added for Curie-Weiss temperature and ordered moment and expanded discussion of equations of motion in terms of the Helmholtz decomposition
title: Diffusion Weighted Imaging (DWI): added value in preoperative staging of gastric cancer?
Creators: name: Giganti, Francesco
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Gastrointestinal tract
subject: Oncology
subject: Stomach (incl. Oesophagus)
subject: MR-Diffusion/Perfusion
subject: MR
subject: Diagnostic procedure
subject: Neoplasia

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: 1. The staging of gastric cancers (GC) is pivotal to determine the treatment and the clinical outcome of these tumours. In fact, non invasive cancers (T1-T2 stages) are directly candidated to the surgical intervention while invasive tumours (T3-T4...
Strong boundedness of simply connected split Chevalley groups defined over rings
Creators: name: Trost, Alexander Alois
Publisher: name: arXiv
Year: 2020
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20Gxx

description: This paper is concerned with the diameter of certain word norms on S-arithmetic split Chevalley groups. Such groups are well known to be boundedly generated by root elements. We prove that word metrics given by conjugacy classes on S-arithmetic split Chevalley groups have an upper bound only depending on the number of conjugacy classes. This property, called strong boundedness, was introduced by Kedra, Libmann and Martin and proven for ${\rm SL}_n(R)$, assuming R is a principal ideal domain and $n\geq 3$. We also provide examples of normal generating sets for S-arithmetic split Chevalley groups proving our bounds are sharp in an appropriate sense and give a complete account of obstructions to the existence of small normally generating sets of ${\rm Sp}_4(R)$ and $G_2(R)$. For instance, we prove that ${\rm Sp}_4(\mathbb{Z}[\frac{1+\sqrt{-7}}{2}])$ cannot be generated by a single conjugacy class.
description: 33 pages, first version
Robustness of quantum critical pairing against disorder
Creators: name: Kang, Jian
name: Fernandes, R. M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The remarkable robustness of high-temperature superconductors against disorder remains a controversial obstacle towards the elucidation of their pairing state. Indeed, experiments report a weak suppression rate of the transition temperature $T_{c}$ with disorder, significantly smaller than the universal value predicted by extensions of the conventional theory of dirty superconductors. However, in many high-$T_{c}$ compounds, superconductivity appears near a putative magnetic quantum critical point, suggesting that quantum fluctuations, which suppress coherent electronic spectral weight, may also promote unconventional pairing. Here we investigate theoretically the impact of disorder on such a quantum critical pairing state, considering the coupling of impurities both to the low-energy electronic states and to the pairing interaction itself. We find a significant reduction in the suppression rate of $T_{c}$ with disorder near the magnetic quantum critical point, shedding new light on the nature of unconventional superconductivity in correlated materials.
description: Accepted for publication in Phys. Rev. B
Exploring the vast potentials and probable limitations of novel and nanostructured implantable drug delivery systems for cancer treatment
Creators: name: Ebrahimnia, Maryam
name: Alavi, Sonia
name: Vaezi, Hamed
name: Karamat Iradmousa, Mahdieh
name: Haeri, Azadeh
Publisher: name: IfADo - Leibniz Research Centre for Working Environment and Human Factors, Dortmund
Year: 2024
Subjects: implantable drug delivery system
polymer depot
local drug delivery
controlled release
cancer chemotherapy

description: Conventional cancer chemotherapy regimens, albeit successful to some extent, suffer from some significant drawbacks, such as high-dose requirements, limited bioavailability, low therapeutic indices, emergence of multiple drug resistance, off-target distribution, and adverse effects. The main goal of developing implantable drug delivery systems (IDDS) is to address these challenges and maintain anti-cancer drugs directly at the intended sites of therapeutic action while minimizing inevitable side effects. IDDS possess numerous advantages over conventional drug delivery, including controlled drug release patterns, one-time drug administration, as well as loading and stabilizing poorly water-soluble chemotherapy drugs. Here, we summarized conventional and novel (three-dimensional (3D) printing and microfluidic) preparation techniques of different IDDS, including nanofibers, films, hydrogels, wafers, sponges, and osmotic pumps. These systems could be designed with high biocompatibility and biodegradability features using a wide variety of natural and synthetic polymers. We also reviewed the published data on these systems in cancer therapy with a particular focus on their release behavior. Various release profiles could be attained in IDDS, which enable predictable, adjustable, and sustained drug releases. Furthermore, multi-step or stimuli-responsive drug release could be obtained in these systems. The studies mentioned in this article have proven the effectiveness of IDDS for treating different cancer types with high prevalence, including breast cancer, and aggressive cancer types, such as glioblastoma and liver cancer. Additionally, the challenges in applying IDDS for efficacious cancer therapy and their potential future developments are also discussed. Considering the high potential of IDDS for further advancements, such as programmable release and degradation features, further clinical trials are needed to ensure their efficiency. The overall goal of this review is to expand our understanding of the behavior of commonly investigated IDDS and to identify the barriers that should be addressed in the pursuit of more efficient therapies for cancer.
description: EXCLI Journal; 23:Doc143; ISSN 1611-2156
Synergistic signatures of group mechanisms in higher-order systems
Creators: name: Robiglio, Thomas
name: Neri, Matteo
name: Coppes, Davide
name: Agostinelli, Cosimo
name: Battiston, Federico
name: Lucas, Maxime
name: Petri, Giovanni
Publisher: name: arXiv
Year: 2024
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The interplay between causal mechanisms and emerging collective behaviors is a central aspect of understanding, controlling, and predicting complex networked systems. In our work, we investigate the relationship between higher-order mechanisms and higher-order behavioral observables in two representative models with group interactions: a simplicial Ising model and a social contagion model. In both systems, we find that group (higher-order) interactions show emergent synergistic (higher-order) behavior. The emergent synergy appears only at the group level and depends in a complex, non-linear way on the trade-off between the strengths of the low- and higher-order mechanisms and is invisible to low-order behavioral observables. Our work sets the basis for systematically investigating the relation between causal mechanisms and behavioral patterns in complex networked systems with group interactions, offering a robust methodological framework to tackle this challenging task.
Multi-qubit quantum computing using discrete-time quantum walks on closed graphs
Creators: name: Chawla, Prateek
name: Singh, Shivani
name: Agarwal, Aman
name: Srinivasan, Sarvesh
name: Chandrashekar, C. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Universal quantum computation can be realised using both continuous-time and discrete-time quantum walks. We present a version based on single particle discrete-time quantum walk to realize multi-qubit computation tasks. The scalability of the scheme is demonstrated by using a set of walk operations on a closed lattice form to implement the universal set of quantum gates on multi-qubit system. We also present a set of experimentally realizable walk operations that can implement Grover's algorithm, quantum Fourier transformation and quantum phase estimation algorithms. An elementary implementation of error detection and correction is also presented. Analysis of space and time complexity of the scheme highlights the advantages of quantum walk based model for quantum computation on systems where implementation of quantum walk evolution operations is an inherent feature of the system.
description: 18 pages, 22 figures
PRINCIPLES OF DEVELOPMENT OF THE FINANCIAL MANAGEMENT SYSTEM IN UZBEKISTAN
Creators: name: Qudbiyev, Nodir
Publisher: name: Zenodo
Year: 2024

description: This article will consider the features and principles of the development of the financial management system in Uzbekistan. At the current stage of cardinal reforms being carried out in the economy of our republic, special attention is being paid to the development of the digital economy. The gradual development of the financial management mechanism in business entities based on digital financial technologies is closely linked to international integration, which, in turn, leads to the emphasis on solving issues such as improving modern management processes, selling to foreign investors based on reducing the state's share in large joint-stock companies.
title: Evaluation of transplanted kidneys using blood oxygenation level-dependent MR imaging at 3T: a preliminary study
Creators: name: Kim, Yi Kyung
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Kidney
subject: MR
subject: MR-Functional imaging
subject: Transplantation

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: •To prospectively investigate the feasibility and reproducibility of BOLD MRI under different gradient echoes at 3 T in patients with renal allograft, as compared with the features of native kidneys in healthy volunteers •To evaluate the...
Skyrmion Lattice Phases in Thin Film Multilayer
Creators: name: Zázvorka, Jakub
name: Dittrich, Florian
name: Ge, Yuquing
name: Kerber, Nico
name: Raab, Klaus
name: Winkler, Thomas
name: Litzius, Kai
name: Veis, Martin
name: Virnau, Peter
name: Kläui, Mathias
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Phases of matter are ubiquitous with everyday examples including solids and liquids. In reduced dimensions, particular phases, such as the two-dimensional (2D) hexatic phase and corresponding phase transitions occur. A particularly exciting example of 2D ordered systems are skyrmion lattices, where in contrast to previously studied 2D colloid systems, the skyrmion size and density can be tuned by temperature and magnetic field. This allows us to drive the system from a liquid phase to a hexatic phase as deduced from the analysis of the hexagonal order. Using coarse-grained molecular dynamics simulations of soft disks, we determine the skyrmion interaction potentials and we find that the simulations are able to reproduce the full two-dimensional phase behavior. This shows that not only the static behavior of skyrmions is qualitatively well described in terms of a simple two-dimensional model system but skyrmion lattices are versatile and tunable two-dimensional model systems that allow for studying phases and phase transitions in reduced dimensions.
description: Corrected Acknowledgements
title: MRI of cerebral oxygenation in patients with stroke
Creators: name: Krainik, Alexandre
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Haemodynamics / Flow dynamics
subject: Imaging sequences
subject: MR
subject: Neuroradiology brain

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: Hypoxia appears in several pathologies such as brain injury, tumor or stroke. In MRI clinical practise, the diagnosis of stroke is realized through diffusion and perfusion sequences. This latter provides data about hemodynamic parameters but no...
Winkelmann, F., Die Kirchen im Zeitalter der Kreuzzüge (11.-13. Jahrhundert)
Creators: name: Padberg, Lutz Von
Publisher: name: Jahrbuch für evangelikale Theologie
Year: 2025

description: 1821138589
description: Jahrbuch für evangelikale Theologie, V. 9 (1995): Jahrbuch für evangelikale Theologie, Band 9
Theory of Multifarious Quantum Phases and Large Anomalous Hall effect in Pyrochlore Iridate Thin Films
Creators: name: Hwang, Kyusung
name: Kim, Yong Baek
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We theoretically investigate emergent quantum phases in the thin film geometries of the pyrochore iridates, where a number of exotic quantum ground states are proposed to occur in bulk materials as a result of the interplay between electron correlation and strong spin-orbit coupling. The fate of these bulk phases as well as novel quantum states that may arise only in the thin film platforms, are studied via a theoretical model that allows layer-dependent magnetic structures. It is found that the magnetic order develop in inhomogeneous fashions in the thin film geometries. This leads to a variety of magnetic metal phases with modulated magnetic ordering patterns across different layers. Both the bulk and boundary electronic states in these phases conspire to promote unusual electronic properties. In particular, such phases are akin to the Weyl semimetal phase in the bulk system and they would exhibit an unusually large anomalous Hall effect.
description: 11 pages, 8 figures. References and acknowledgements updated
title: Mimicking breast cancer: Idiophatic Granulomatous Mastitis.
Creators: name: Durany Lara, David
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Breast
subject: Oncology
subject: Lymph nodes
subject: Mammography
subject: Ultrasound
subject: MR
subject: Treatment effects
subject: Complications
subject: Biopsy
subject: Inflammation
subject: Neoplasia
subject: Abscess

description: Learning objectives Background Imaging findings OR Procedure details Conclusion Personal Information References
description: Learning objectives: The aim of this presentation is to explain the main clinical and radiological features of idiophatic granulomatous mastitis and the importance to differenciate it from breast cancer. In this poster we will review the variety of radiological findings...
Multifractality at non-Anderson disorder-driven transitions in Weyl semimetals and other systems
Creators: name: Syzranov, S. V.
name: Gurarie, V.
name: Radzihovsky, L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Systems with the power-law quasiparticle dispersion $ε_{\bf k}\propto k^α$ exhibit non-Anderson disorder-driven transitions in dimensions $d>2α$, as exemplified by Weyl semimetals, 1D and 2D arrays of ultracold ions with long-range interactions, quantum kicked rotors and semiconductor models in high dimensions. We study the wavefunction structure in such systems and demonstrate that at these transitions they exhibit fractal behaviour with an infinite set of multifractal exponents. The multifractality persists even when the wavefunction localisation is forbidden by symmetry or topology and occurs as a result of elastic scattering between all momentum states in the band on length scales shorter than the mean free path. We calculate explicitly the multifractal spectra in semiconductors and Weyl semimetals using one-loop and two-loop renormalisation-group approaches slightly above the marginal dimension $d=2α$.
description: 10 pages, 5 figures, 3 tables