cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Catalytic Reactions in Heavy-ion Collisions
Creators: name: Kolomeitsev, E. E.
name: Tomasik, B.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We discuss a new type of reactions of a phi meson production on hyperons, pi Y--> phi Y and anti-kaons bar-K N --> phi Y. These reactions are not suppressed according to Okubo-Zweig-Iizuka rule and can be a new efficient source of phi mesons in a nucleus-nucleus collision. We discuss how these reactions can affect the centrality dependence and the rapidity distributions of the phi yield.
description: talk at 6th International Workshop on Critical Point and Onset of Deconfinment (CPOD2010), Dubna, August 22-28, 2010
Synchronization of One Dimensional Array of Point Josephson Junctions Coupled to a Common Load
Creators: name: Lin, Shi-Zeng
name: Hu, Xiao
name: Bulaevskii, Lev
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the synchronization in a one dimensional array of point Josephson junctions coupled to a common capacitor, which establishes a long-range interaction between junctions and synchronizes them. The stability diagram of synchronization in a noise-free system is obtained. The current when junctions transform from resistive state into superconducting state, is then calculated and its dependence on the shunt parameters and the dissipation of junctions is revealed. In the presence of thermal noise, the synchronized oscillations are destroyed at a critical temperature and the system undergoes a continuous phase transition of desynchronization. A possible stability diagram of the synchronized oscillations with respect to thermal noise, current, dissipations and shunt capacitance is then constructed. Finally we investigate the dynamic relaxation from random oscillations into synchronized state. The relaxation time increases with the system size and temperature, but is reduced by the shunt capacitor.
description: 11.2 pages, 14 figures
title: The synergistic effect of type 2 diabetes mellitus and anaemia on left ventricular global strain explored by CMR feature tracking
Creators: name: Qian, Wenlei
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Cardiac
subject: MR
subject: Comparative studies
subject: Metabolic disorders

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Cardiovascular diseases have become the leading cause of the world’s deaths, while diabetes could double the risks of many cardiovascular diseases independently and was estimated to be responsible for 11% of cardiovascular deaths. Anemia patients...
High-precision characterizations of K2 and TESS planet candidates from the KESPRINT consortium: Outlook for PLATO
Creators: name: Deeg, Hans J.
name: KESPRINT Consortium
Publisher: name: Zenodo
Year: 2021
Subjects: extrasolar planets, TESS, KESPRINT, radial velocities, PLATO

description: The European-led KESPRINT consortium consists of over 50 scientists and has become a major player in the ground-based follow-up of planet candidates discovered by the K2 and TESS space missions, leading in many cases to their verification as planets and their state-of-the art characterization. This effort is mainly based on planet-mass measurements from RV observations, but also on high-resolution imaging and time-series photometry, as well as on detailed analyses of the host stars. KESPRINT also runs its own planet detection pipeline which permits the detection of candidates independently from the official mission-releases, thereby also building up expertise in the evaluation and modelling of marginal detections. The success of KESPRINT stems from the close collaboration between its working groups, bringing together a wide range of expertise, and from the organized allocation of follow-up resources, providing an approach which can be applied to a mission like PLATO. In this talk the contribution of KESPRINT to the field will be reviewed, with particular focus on planets and systems which might be similar to those of interest for the PLATO mission. We pay attention to the issues arising for the characterization of exoplanets due to the available telescope time being distributed across independent teams with sometimes short allocations. We will also count about our experiences from organizing such a large team. These have been ingested into a recently revised version of our internal ‘Memorandum of Understanding’, which might also be useful to other collaborations in the field
description: Funding is acknowledged from the Spanish Research Agency of the Ministry of Science and Innovation (AEI-MICINN) under grant 'Contribution of the IAC to the PLATO Space Mission' with reference PID2019-107061GB-C66, DOI: 10.13039/501100011033
title: The Unique Features of Middle Cranial Fossa and Sylvian Fissure Arachnoid Cysts in Children: MRI Evaluation.
Creators: name: Kaynak Şahap, Seda
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: CNS
subject: Neuroradiology brain
subject: Paediatric
subject: MR
subject: Diagnostic procedure
subject: Cerebrospinal fluid
subject: Cysts

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Arachnoid cysts are benign extra-axial cerebrospinal fluid (CSF) filled lesions [1]. Supratentorial arachnoid cysts account for the majority of cysts and most of them are located in the middle cranial fossa due to rich in arachnoid mater in the...
title: All-in-one Prostate Cancer Staging
Creators: name: Berenghi, Alessandro
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Genital / Reproductive system male
subject: Oncology
subject: CT
subject: MR
subject: Staging
subject: Cancer

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: The objectives of the study are to evaluate 1) whether an “All-in-one” MRI staging examination (biparametric prostate + whole-body MRI in the same examination) increases the sensitivity of diagnosis of lymph node and distant metastases in...
Global SO(10) F-theory GUTs
Creators: name: Chen, Ching-Ming
name: Knapp, Johanna
name: Kreuzer, Maximilian
name: Mayrhofer, Christoph
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Making use of toric geometry we construct a class of global F-theory GUT models. The base manifolds are blowups of Fano threefolds and the Calabi-Yau fourfold is a complete intersection of two hypersurfaces. We identify possible GUT divisors and construct SO(10) models on them using the spectral cover construction. We use a split spectral cover to generate chiral matter on the 10 curves in order to get more degrees of freedom in phenomenology. We use abelian flux to break SO(10) to SU(5)\times U(1) which is interpreted as a flipped SU(5) model. With the GUT Higgses in the SU(5)\times U(1) model it is possible to further break the gauge symmetry to the Standard Model. We present several phenomenologically attractive examples in detail.
description: 58 pages, modified models, added references, corrected typos
title: Post-Therapeutic imaging of soft tissue sarcomas
Creators: name: OUKASSEM, SIHAM
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Musculoskeletal soft tissue
subject: Oncology
subject: MR
subject: PET-CT
subject: Radiation therapy / Oncology
subject: Cancer
subject: Neoplasia

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: -Describe imaging techniques that can be used to identify local recurrence for an soft tissue sarcoma .-To illustrate the radiological aspect of the postoperative changes as well as radiotherapy-Describe a solid approach that is recommended for...
title: Quasi-material decomposition images from single energy CT based on deep learning
Creators: name: Nishijima, Kojiro
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Abdomen
subject: Biliary Tract / Gallbladder
subject: CT
subject: Efficacy studies
subject: Image verification

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Purpose Dual Energy CT (DECT) is expected to improve diagnostic ability, in terms of high tissue contrast and discriminating substances with estimated effective atomic number. In cases of cholesterol gallstones, which are difficult to recognize in...
Το Δίκαιο της Έκτακτης Ανάγκης
Creators: name: Καραμάνου, Ασπασία
name: Tzika - Hatzopoulou, Aliki
Publisher: name: figshare
Year: 2019
Subjects: subject: 180199 Law not elsewhere classified
subject: FOS: Law

description: Στην εργασία επιχειρείται μια σύντομη επισκόπηση των ιδιαίτερων διατάξεων του Δικαίου της Έκτακτης Ανάγκης που θεσπίζονται σε διεθνές επίπεδο. Μελετάται η ποικιλομορφία των διακεκριμένων ρυθμίσεων που έχουν υιοθετηθεί από τα νομικά συστήματα των χωρών καθώς και των νομικών μοντέλων που κατά καιρούς έχουν προταθεί από τους θεωρητικούς. Καταδεικνύεται η δυσκολία στη θέσπιση ενιαίων νομικών κανόνων καθώς και αδυναμία αναλογικής εξισορρόπησης του Κράτους Δικαίου με την εύρεση ευέλικτων και αποτελεσματικών μέτρων προστασίας
Coordinate representation of particle dynamics in AdS and in generic static spacetimes
Creators: name: Dorn, Harald
name: Jorjadze, George
name: Kalousios, Chrysostomos
name: Plefka, Jan
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discuss the quantum dynamics of a particle in static curved spacetimes in a coordinate representation. The scheme is based on the analysis of the squared energy operator E^2, which is quadratic in momenta and contains a scalar curvature term. Our main emphasis is on AdS spaces, where this term is fixed by the isometry group. As a byproduct the isometry generators are constructed and the energy spectrum is reproduced. In the massless case the conformal symmetry is realized as well. We show the equivalence between this quantization and the covariant quantization, based on the Klein-Gordon type equation in AdS. We further demonstrate that the two quantization methods in an arbitrary (N+1)-dimensional static spacetime are equivalent to each other if the scalar curvature terms both in the operator E^2 and in the Klein-Gordon type equation have the same coefficient equal to (N-1)/(4N).
description: 14 pages, no figures, typos corrected
title: Media addiction in children and adolescents—a study protocol for development, piloting and evaluation of a sustainable, integrative rehabilitation program (MeKi)
Creators: name: Fahrenkrog, S.
name: Rittmann, L. M.
name: Klüpfel, L.
name: Delfs, S.
name: Stumm, J.
Publisher: name: Humboldt-Universität zu Berlin
Year: 2025
Subjects: subject: media addiction
subject: children
subject: adolescent
subject: media-related interference
subject: social media
subject: gaming
subject: streaming
subject: 150 Psychologie

description: Introduction: The proportion of children and young people in Germany who have problematic media use has increased, particularly as a result of the coronavirus pandemic. The presence of comorbidities such as anxiety disorders, depression, sleep disorders, impulsivity and lack of social skills are interdependent with media addiction. Medical rehabilitation is suitable for the long-term care of children and adolescents with media addiction. As part of the MeKi study, a rehabilitation program for children and adolescents with media addiction is being developed and piloted in a cooperating rehabilitation clinic. The trial is registered under DRKS-ID: DRKS00034461, Medienabhängigkeit bei Kindern und Jugendlichen—Entwicklung, Pilotierung und Evaluation eines nachhaltigen, integrativen Rehabilitationskonzepts. Methodes and analysis: As part of a mixed methods design a multimodal rehabilitation concept for children and adolescents with media addiction will be developed in a preparation phase based on the results of a scoping review as well as interviews and focus groups with affected children and adolescents, their parents and experts. In a trial phase the concept will be implemented with a planned sample of 80 Children and adolescents over a period of 1.5 years and evaluated by means of a results evaluation using a questionnaire survey and a process evaluation using interviews and focus groups. Discussion: The lack of a standardized definition for problematic media use in children and adolescents complicates both the scientific discourse and the practical care of those affected. Furthermore, there are currently only a few therapeutic offers and these are only available in the acute sector. The development and piloting of a rehabilitation program for children and adolescents with media addiction is intended to provide sustainable rehabilitative care, which is to be transferred to other clinics after the end of the project. Trial registration: The trial is registered under DRKS-ID: DRKS00034461, Medienabhängigkeit bei Kindern und Jugendlichen—Entwicklung, Pilotierung und Evaluation eines nachhaltigen, integrativen Rehabilitationskonzepts.
title: Risks and contraindications of imaging tests: an update.
Creators: name: Moujir Sanchez, Alejandro
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Professional issues
subject: Radioprotection / Radiation dose
subject: Conventional radiography
subject: CT
subject: MR
subject: Contrast agent-intravenous
subject: Safety
subject: Artifacts
subject: Biological effects
subject: Occupational / Environmental hazards

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: Review main limitations when performing of imaging tests, its risks, compatibility of medical devices and cointraindications of contrast media...
Estimation of hot Jupiter tidal infall rate in the Galaxy
Creators: name: Lazovik, Yaroslav
Publisher: name: Zenodo
Year: 2021

description: Among various mechanisms, tidal interaction plays a critical role in its impact on the dynamics of close-in planetary systems. This is especially true for systems with hot Jupiter, as tidal dissipation provides rapid migration of the most massive planets leading to their engulfment. We study the orbital evolution of hot Jupiters around solar-mass pre-main sequence (PMS) and main sequence (MS) stars following the tidal prescriptions from Barker (2020), allowing to investigate the dissipation of equilibrium tide, inertial waves, and gravity waves over the wide parameter space. Based on our results, we simulate the hot Jupiter population and derive the statistics of planetary infalls within the Galactic thin disk.
Nilmanifolds with a calibrated G_2-structure
Creators: name: Conti, Diego
name: Fernández, Marisa
Publisher: name: arXiv
Year: 2010
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C38 (Primary), 53C15, 17B30 (Secondary)

description: We introduce obstructions to the existence of a calibrated G_2-structure on a Lie algebra g of dimension seven, not necessarily nilpotent. In particular, we prove that if there is a Lie algebra epimorphism from g to a six-dimensional Lie algebra h with kernel contained in the center of g, then h has a symplectic form. As a consequence, we obtain a classification of the nilpotent Lie algebras that admit a calibrated G_2-structure.
description: 21 pages; v2: added some introductory details on G_2 structures in Section 2, exposition improved. To appear in Differential Geometry and its Applications
Suppression of chaos at slow variables by rapidly mixing fast dynamics through linear energy-preserving coupling
Creators: name: Abramov, Rafail V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Dynamical Systems (math.DS)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 37M, 37N, 60G

description: Chaotic multiscale dynamical systems are common in many areas of science, one of the examples being the interaction of the low-frequency dynamics in the atmosphere with the fast turbulent weather dynamics. One of the key questions about chaotic multiscale systems is how the fast dynamics affects chaos at the slow variables, and, therefore, impacts uncertainty and predictability of the slow dynamics. Here we demonstrate that the linear slow-fast coupling with the total energy conservation property promotes the suppression of chaos at the slow variables through the rapid mixing at the fast variables, both theoretically and through numerical simulations. A suitable mathematical framework is developed, connecting the slow dynamics on the tangent subspaces to the infinite-time linear response of the mean state to a constant external forcing at the fast variables. Additionally, it is shown that the uncoupled dynamics for the slow variables may remain chaotic while the complete multiscale system loses chaos and becomes completely predictable at the slow variables through increasing chaos and turbulence at the fast variables. This result contradicts the common sense intuition, where, naturally, one would think that coupling a slow weakly chaotic system with another much faster and much stronger mixing system would result in general increase of chaos at the slow variables.
Cyclotomic Matrices and Graphs over the ring of integers of some imaginary quadratic fields
Creators: name: Taylor, Graeme
Publisher: name: arXiv
Year: 2010
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 05C50, 05C22, 11C20

description: We determine all Hermitian $\mathcal{O}_{\Q(\sqrt{d})}$-matrices for which every eigenvalue is in the interval [-2,2], for each d in {-2,-7,-11,-15\}. To do so, we generalise charged signed graphs to $\mathcal{L}$-graphs for appropriate finite sets $\mathcal{L}$, and classify all $\mathcal{L}$-graphs satisfying the same eigenvalue constraints. We find that, as in the integer case, any such matrix / graph is contained in a maximal example with all eigenvalues $\pm2$.
title: Ultrasound illusions: A possible ally.
Creators: name: Tarra Romero, Andrés
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Anatomy
subject: Ultrasound
subject: Education
subject: Education and training

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: This educational exhibition aims to illustrate some imaging signs obtained by ultrasound that get inspiration from different non-medical elements and are related to diverse conditions or anatomical features. To better understand the etiology of...
Fourier factorization with complex polarization bases in the plane-wave expansion method applied to two-dimensional photonic crystals
Creators: name: Antos, Roman
name: Veis, Martin
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate an enhancement of the plane wave expansion method treating two-dimensional photonic crystals by applying Fourier factorization with generally elliptic polarization bases. By studying three examples of periodically arranged cylindrical elements, we compare our approach to the classical Ho method in which the permittivity function is simply expanded without changing coordinates, and to the normal vector method using a normal-tangential polarization transform. The compared calculations clearly show that our approach yields the best convergence properties owing to the complete continuity of our distribution of polarization bases. The presented methodology enables us to study more general systems such as periodic elements with an arbitrary cross-section or devices such as photonic crystal waveguides.
title: PR-Ð¸Ð¸Ð½ÑÑÑÑÐ¼ÐµÐ½ÑÑ ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¸Ð¼Ð¸Ð´Ð¶Ð° ÑÐ¿Ð¾ÑÑÐ¸Ð²Ð½Ð¾Ð¹ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ (Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ Â«runlabÂ»)
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: PR-tools for forming the image of a sports organization (using the example of "runlab")
Creators: name: ÐÑÐµÐ», ÐÑÐ¸Ð½Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2021
Subjects: PR
PR â Ð¸Ð½ÑÑÑÑÐ¼ÐµÐ½ÑÑ
Ð»Ð°Ð±Ð¾ÑÐ°ÑÐ¾ÑÐ¸Ñ Ð±ÐµÐ³Ð°
ÑÐ¿Ð¾ÑÑÐ¸Ð²Ð½Ð°Ñ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ñ Ð¿ÑÐ¾Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ðµ
Ð¸Ð¼Ð¸Ð´Ð¶
ÑÐµÐºÐ»Ð°Ð¼Ð½Ð¾Ðµ ÑÐ¾Ð¾Ð±ÑÐµÐ½Ð¸Ðµ
ÑÐ¾ÑÐ¸Ð°Ð»ÑÐ½Ð°Ñ ÑÐµÑÑ
Â«InstagramÂ»
PR tools
running laboratory
sports organization promotion
image
advertising message
social network
"Instagram"

description: ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð² Ð¿ÐµÑÐ²ÑÑ Ð¾ÑÐµÑÐµÐ´Ñ ÑÐ¿Ð¾ÑÐ¾Ð±Ð°Ð¼, Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÑÐ¼ Ð¿Ð¾ ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¸Ð¼Ð¸Ð´Ð¶Ð° ÑÐ¿Ð¾ÑÑÐ¸Ð²Ð½Ð¾Ð¹ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ Runlab â Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³. Ð Ð¿ÑÐ¾ÑÐµÑÑÐµ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ»Ð¸ Ð¿Ð¾Ð»Ð½Ð¾ÑÑÑÑ Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ñ ÑÐµÐ»Ð¸ Ð² Ð¸Ð·ÑÑÐµÐ½Ð¸Ð¸ ÑÑÑÐµÑÑÐ²ÑÑÑÐ¸Ñ ÑÐ¼ÐµÐ¶Ð½ÑÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ð¹, Ð¸Ð·ÑÑÐµÐ½Ð¸Ðµ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐµÐ¹ ÐºÐ¾Ð¼Ð¼ÑÐ½Ð¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¾Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ðµ, Ð¾ÑÐ½Ð¾Ð²Ð½ÑÑ ÑÐµÐ½Ð´ÐµÐ½ÑÐ¸Ð¹ Ð² Ð¿ÑÐ¾Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ð¸ Ð¼Ð°Ð³Ð°Ð·Ð¸Ð½Ð°, ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ½ÑÐ¹ Ð°Ð½Ð°Ð»Ð¸Ð·, ÑÐ¸ÑÑÐ°ÑÐ¸Ð¾Ð½Ð½ÑÐ¹ Ð°Ð½Ð°Ð»Ð¸Ð· ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸ ÐÐ°Ð±Ð¾ÑÐ°ÑÐ¾ÑÐ¸Ñ Ð±ÐµÐ³Ð° Runlab, ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¸ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¸Ðµ ÑÐ¾Ð²Ð¼ÐµÑÑÐ½Ð¾Ð³Ð¾ Ñ Puma Ð¿ÑÐ¾ÐµÐºÑÐ° Â«Ð¿Ð»Ð¾Ð³Ð³Ð¸Ð½Ð³ First MileÂ» ÐºÐ°Ðº PR â Ð¸Ð½ÑÑÑÑÐ¼ÐµÐ½Ñ ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¸Ð¼Ð¸Ð´Ð¶Ð°. ÐÑÐ¾Ð³Ð¾Ð¼ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÑÐ°Ð»Ð¸ ÑÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÐµ Ð°Ð²ÑÐ¾ÑÐ¾Ð¼ ÑÐµÐºÐ¾Ð¼ÐµÐ½Ð´Ð°ÑÐ¸Ð¸ Ð¿Ð¾ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑÐ½Ð¾Ð¼Ñ ÐºÐ¾Ð¼Ð¼ÑÐ½Ð¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¼Ñ Ð¿ÑÐ¾Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ñ Ð² ÑÐ¾ÑÐ¸Ð°Ð»ÑÐ½Ð¾Ð¹ ÑÐµÑÐ¸ Instsgram
description: This work is PRimarily devoted to the ways and opportunities for the formation of the image of the sports organization Runlab -St. Petersburg. In the course of the work, the goals of studying the existing related research, studying the features of communication PRomotion, the main trends in the PRomotion of the store, competitive analysis, situational analysis of the company Run Lab Runlab, development and implementation of the joint PRoject with Puma "plogging First Mile" as a PR tool for image formation were fully fulfilled. The result of the study was the recommendations formed by the author on complex communication PRomotion in the social network Instsgram.
ROOSTER, a machine learning tool to determine stellar surface rotation periods in Kepler data
Creators: name: S.N. Breton
name: A.R.G. Santos
name: S. Mathur
name: R.A García
name: P.L. Pallé
name: L. Bugnet
Publisher: name: Zenodo
Year: 2021

description: The Kepler and, to a lesser extent, the CoRoT missions opened the era of large-scale photometric stellar surveys with space instruments. Corotating dark spots and bright faculae on the stellar surface lead to brightness variations and therefore those long-term photometric surveys provide ideal datasets to measure stellar surface rotation periods and build stellar rotation catalogs. Such catalogs can then be used to constrain gyrochronology models or to study the interplay between rotation and magnetic activity. Taking the best possible advantage of those large-scale surveys, the main challenge that we face today is finding efficient methods to analyse the large amount of data. It has been shown that a combination of methods (auto-correlation function, time-frequency analysis) applied on light curves with different high-pass filtering provide reliable rotation estimates. However, the results yielded by those methods require a significant amount of visual inspection. In the work presented here, random forest learning abilities are exploited to automate the extraction of rotation periods and magnetic activity index in Kepler light curves and to reduce the number of required visual inspections in the dataset. We train three different classifiers: one to detect if rotation modulations are present in the light curve, one to flag classical pulsators or close binary candidates that can bias our rotation-period determination, and finally one classifier to provide the final rotation period. We test our machine learning pipeline, ROOSTER (Breton et al. 2021), on the Kepler K and M dwarf sample using the reference catalog of Santos et al (2019). We show that we are able to detect rotation modulations with an accuracy of 94.2% and to retrieve final rotation periods with an accuracy of 95.3%. This value is raised to 99.5% after visually inspecting 25.2% of the stars. Over the two main analysis steps, the pipeline yields a global accuracy of 92.1% before visual checks, 96.9% after. The method is then applied to analyse the F and G Kepler sample (Santos et al. 2021). This allowed us to derive the largest catalog of surface rotation periods for the Kepler targets with more than 55,000 entries. The work we performed used only time series from the Kepler mission, but the methodology presented here could be adapted to extract surface rotation periods for stars observed by other missions, like K2, TESS, or PLATO.
Tidal Evolution of Close Binary Asteroid Systems
Creators: name: Taylor, Patrick A.
name: Margot, Jean-Luc
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We provide a generalized discussion of tidal evolution to arbitrary order in the expansion of the gravitational potential between two spherical bodies of any mass ratio. To accurately reproduce the tidal evolution of a system at separations less than five times the radius of the larger primary component, the tidal potential due to the presence of a smaller secondary component is expanded in terms of Legendre polynomials to arbitrary order rather than truncated at leading order as is typically done in studies of well-separated system like the Earth and Moon. The equations of tidal evolution including tidal torques, the changes in spin rates of the components, and the change in semimajor axis (orbital separation) are then derived for binary asteroid systems with circular and equatorial mutual orbits. Accounting for higher-order terms in the tidal potential serves to speed up the tidal evolution of the system leading to underestimates in the time rates of change of the spin rates, semimajor axis, and mean motion in the mutual orbit if such corrections are ignored. Special attention is given to the effect of close orbits on the calculation of material properties of the components, in terms of the rigidity and tidal dissipation function, based on the tidal evolution of the system. It is found that accurate determinations of the physical parameters of the system, e.g., densities, sizes, and current separation, are typically more important than accounting for higher-order terms in the potential when calculating material properties. In the scope of the long-term tidal evolution of the semimajor axis and the component spin rates, correcting for close orbits is a small effect, but for an instantaneous rate of change in spin rate, semimajor axis, or mean motion, the close-orbit correction can be on the order of tens of percent.
description: 40 pages, 2 tables, 8 figures
title: Jede Kultur ist ‚Transkultur’ – auch die japanische : Michiko Mae im Interview
Creators: name: Mae, Michiko
name: Schmidt, Uta C.
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2021
Subjects: subject: Kultur
subject: Beziehungen
subject: Gender
subject: Region
subject: 300

description: Michiko Mae ist mit dem Höffmann-Wissenschaftspreis für interkulturelle Kompetenz der Universität Vechta ausgezeichnet worden. Die emeritierte Professorin der Heinrich-Heine Universität Düsseldorf und Mitglied des Netzwerks Frauen- und Geschlechterforschung NRW erklärt im Gespräch mit Uta C. Schmidt ihr Transkulturalitätskonzept.
description: blog interdisziplinäre geschlechterforschung
Towards identifying intracellular drug targets of Mycobacterium tuberculosis against hit compounds in defined growth media
Creators: name: Bojang, Adama
Publisher: name: University of British Columbia
Year: 2020

description: With the emergence of drug-resistant strains and widespread HIV epidemics, Mycobacterium tuberculosis (Mtb), the causative agent of TB, remains a number one global health problem. Human alveolar macrophages are the natural host and reservoir of Mtb and as an intracellular pathogen, Mtb relies on host lipids as growth substrates. However, little is known about the in vivo availability of carbon and energy sources as substrates to support Mtb growth and how its intracellular environment influences anti-mycobacterial compound activity. In this study, we aimed to use carbon restriction to mimic intracellular environment of Mtb and determined in vitro activities of hit compounds against Mtb. We also aimed to use “chemical genetic” approach to screen for resistant mutants against novel inhibitors and identify intracellular drug targets of Mtb against hit compounds in defined growth substrate media. Using resazurin and cytotoxicity assays, compound’s activities against Mtb as well as against host cells were determined. Resistant mutants were isolated on a defined growth substrate 7H10 solid media supplemented with hit compounds. Genomic DNA of all resistant mutants were extracted and sequenced to identify mutated genes. Less than 30% of compound were active in albumin dextrose catalase as rich-media. Anti-mycobacterial compounds were all active in single carbon substrate media. Acetate or glycerol in growth media without hit compounds had an inhibitory effect on Mtb. Hit compounds at the highest concentration did not have cytotoxicity effect against host cells. A total of 8 mutants resistant to various novel inhibitors were isolated, with more than a single gene mutation identified in each strain. We showed albumin dextrose catalase as rich-media is not ideal for compound screening. Media supplemented with glucose alone or cholesterol plus glucose or acetate closely resembles the MIC profile of the intracellular environment. Resistant mutants isolated in vitro showed similar resistant phenotype to intracellularly grown bacteria, suggesting a link between the resistant phenotype and the mutated genes identified. Identifying intracellular druggable targets will facilitate the development of better approaches in TB treatment. The findings from this project will improve knowledge of the mode of action of particular compounds against Mtb.
title: Multidisciplinary aspects and management of breast lesions with uncertain neoplastic potential (B3) diagnosed with core needle biopsy (CNB) and vacuum assisted breast biopsy (VABB)
Creators: name: Russo, Annunziata
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Breast
subject: Mammography
subject: Ultrasound
subject: Biopsy
subject: Vacuum assisted biopsy
subject: Cancer
subject: Multidisciplinary cancer care
subject: Neoplasia

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: CNB and VABB influence the management of breast lesions because they provide a preoperative histological diagnosis of certainty; moreover, they condition the subsequent steps in the management of the diagnosed lesions. Excisional biopsy is...
Unified BRST approach to (partially) massless and massive AdS fields of arbitrary symmetry type
Creators: name: Alkalaev, K. B.
name: Grigoriev, Maxim
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct a concise gauge invariant formulation for massless, partially massless, and massive bosonic AdS fields of arbitrary symmetry type at the level of equations of motion. Our formulation admits two equivalent descriptions: in terms of the ambient space and in terms of an appropriate vector bundle, as an explicitly local first-order BRST formalism. The second version is a parent-like formulation that can be used to generate various other formulations via equivalent reductions. In particular, we demonstrate a relation to the unfolded description of massless and partially massless fields.
description: 30 pages; v2: Journal version. Comments, conclusions and refs added, typos removed
La musica a Cremona all'epoca di Monteverdi
Creators: name: Tibaldi, Rodobaldo
Publisher: name: Pavia University Press - Edizioni dell'Università degli Studi di Pavia
Year: 2019

description: L’intervento si ripropone di delineare il quadro della vita musicale cremonese nella quale venne a formarsi il giovane Claudio, concentrandosi sui principali luoghi di produzione e di fruizione musicale: la cattedrale e le chiese cittadine, l’Accademia degli Animosi (nella sua prima fase di storia) ed eventuali circoli nobiliari e/o dilettanti, la piazza del Comune, intesa come luogo di azione dei musici comunali. Si mette poi in rilievo il ruolo fondamentale rivestito da Marc’Antonio Ingegneri nel creare i presupposti per una ‘sprovincializzazione’ musicale della città. Questa risulta evidente soprattutto esaminando due punti: (1) l’azione, condotta sistematicamente per quanto gli veniva concesso, di organizzare la cappella della cattedrale secondo i più avanzati modelli nord-italiani del tardo Cinquecento; (2) l’introduzione del madrigale polifonico nella realtà cremonese – che fino al suo arrivo non sembra aver costituito un reale motivo di interesse –, ovvero del genere più alla moda e in grado di dare maggiore visibilità sul piano internazionale a un compositore e a un luogo. In relazione a questo secondo aspetto, un po’ per lo scioglimento dell’Accademia degli Animosi, soprattutto per il continuo disinteresse mostrato da gran parte dell’aristocrazia o della ricca borghesia cittadina, l’azione di Ingegneri non ebbe alcun esito, e i più ambiziosi dotati compositori di madrigali furono obbligati a cercare fortuna altrove.
description: Philomusica on-line, Vol 17, N° 1 (2018)
title: Altered nephrogram: basic knowledge about renal pathophysiology and its radiological correlation
Creators: name: Michael-Fernández, Antonio
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Abdomen
subject: Emergency
subject: Kidney
subject: CT
subject: CT-Angiography
subject: Education
subject: Embolism / Thrombosis
subject: Obstruction / Occlusion
subject: Tissue characterisation

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: Knowing what “nephrogram” means and normal kidney behavior in multiphasic CT. Learning the most frequent abnormalities: absent, delayed, striated and persistent. Correlating each altered nephrogram with its typical...
Survival probability in a one-dimensional quantum walk on a trapped lattice
Creators: name: Gonulol, Meltem
name: Aydiner, Ekrem
name: Shikano, Yutaka
name: Mustecaplioglu, Ozgur E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The dynamics of the survival probability of quantum walkers on a one-dimensional lattice with random distribution of absorbing immobile traps are investigated. The survival probability of quantum walkers is compared with that of classical walkers. It is shown that the time dependence of survival probability of quantum walkers has a piecewise stretched exponential character depending on the density of traps in numerical and analytical observations. The crossover between the quantum analogs of the Rosenstock and Donsker-Varadhan behaviors is identified.
description: 16 pages, 8 figures
Feshbach resonances of harmonically trapped atoms
Creators: name: Schneider, Philipp-Immanuel
name: Vanne, Yulian V.
name: Saenz, Alejandro
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Employing a short-range two-channel description we derive an analytic model of atoms in isotropic and anisotropic harmonic traps at a Feshbach resonance. On this basis we obtain a new parameterization of the energy-dependent scattering length which differs from the one previously employed. We validate the model by comparison to full numerical calculations for Li-Rb and explain quantitatively the experimental observation of a resonance shift and trap-induced molecules in exited bands. Finally, we analyze the bound state admixture and Landau-Zener transition probabilities.
description: 4 pages, 2 figures; revised version with extension to anisotropic traps and new paragraph on trap-induced molecules in excited bands
Novel gyrochronology tests with wide-separation binaries
Creators: name: Godoy-Rivera, Diego
name: Silva-Beyer, Joaquín
name: Chanamé, Julio
Publisher: name: Zenodo
Year: 2021

description: Gyrochronology is the technique that uses rotation periods to derive stellar ages via age-rotation relations. If properly calibrated, its potential applications to Galactic, stellar and exoplanetary astrophysics are far-reaching. Thanks to the exquisite high-precision photometry provided by space-based missions such as Kepler, TESS, and the upcoming PLATO, the number of stars with measured rotation periods will continue to drastically increase in the coming years. Accordingly, it has become imperative to comprehensively test gyrochronology, so its remarkable applications can be fully exploited, and its limits well understood. This work presents a novel technique that tests the state-of-the-art age-rotation relations in under-explored domains using wide binary stars. The components of a given binary are co-eval and taken together they can provide exquisite assessments of gyrochronology. The results of a dedicated test on a sample of Kepler-field binaries and star clusters show that: 1) statistically, the commonly used age-rotation relations do have predictive power in identifying co-eval populations of field stars; 2) they achieve the best results when used in the members of young clusters (ages < 1 Gyr); 3) their performance decreases when used in field wide binaries, as well as in older clusters. All in all, the existing relations need better calibrations, particularly in the regime of ages older than a few Gyr. This work sets up the stage for decisive gyrochronology assessments in the era of ever-expanding space-based photometry.
Measurement of the B -> Dbar(*)D(*)K branching fractions
Creators: name: The BABAR Collaboration
name: Sanchez, P. del Amo
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a measurement of the branching fractions of the 22 decay channels of the B0 and B+ mesons to Dbar(*)D(*)K, where the D(*) and Dbar(*) mesons are fully reconstructed. Summing the 10 neutral modes and the 12 charged modes, the branching fractions are found to be B(B0 -> Dbar(*)D(*)K) = (3.68 +- 0.10 +- 0.24)% and B(B+ -> Dbar(*)D(*)K) = (4.05 +- 0.11 +- 0.28)%, where the first uncertainties are statistical and the second systematic. The results are based on 429 fb^-1 of data containing 471.10^6 BBbar pairs collected at the Y(4S) resonance with the BaBar detector at the SLAC National Accelerator Laboratory.
description: 18 pages, 4 figures, published in Physical Review D
title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ Ð´Ð»Ñ Ð¾ÑÐµÐ½ÐºÐ¸ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´Ð¸ÑÐµÐ»ÑÑÐ½Ð¾ÑÑÐ¸ ÑÑÐµÐ¹Ð¼Ð²Ð¾ÑÐºÐ¾Ð² Ð²Ð½ÐµÐ´ÑÐµÐ½Ð¸Ñ Ð·Ð°Ð²Ð¸ÑÐ¸Ð¼Ð¾ÑÑÐµÐ¹ Ð½Ð° Android-ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð°Ñ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Development of an application for evaluating the performance of dependency injection frameworks on android devices
Creators: name: ÐÐ²Ð°Ð½Ð¾Ð², ÐÐ¸ÐºÐ¸ÑÐ°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: Ð²Ð½ÐµÐ´ÑÐµÐ½Ð¸Ðµ Ð·Ð°Ð²Ð¸ÑÐ¸Ð¼Ð¾ÑÑÐµÐ¹
Ð¸Ð½Ð²ÐµÑÑÐ¸Ñ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ
ÑÐµÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸
dependency injection
inversion of control
performance testing.

description: Ð Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÑÑÑ Ð¿Ð¾Ð½ÑÑÐ¸Ðµ Ð·Ð°Ð²Ð¸ÑÐ¸Ð¼Ð¾ÑÑÐµÐ¹ Ð² ÑÐ¾Ð´Ðµ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ¸ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¾Ð´ÑÐºÑÐ° Ð² ÐºÐ¾Ð½ÑÐµÐºÑÑÐµ Ð¾Ð±ÑÐµÐºÑÐ½Ð¾-Ð¾ÑÐ¸ÐµÐ½ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¸ ÑÐ·ÑÐºÐ¾Ð² Java Ð¸ Kotlin, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´Ð¸ÑÑÑ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÑÐµÐ¹Ð¼Ð²Ð¾ÑÐºÐ¾Ð² Ð¿Ð¾ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð·Ð°Ð²Ð¸ÑÐ¸Ð¼Ð¾ÑÑÑÐ¼Ð¸ Ð¿ÑÐ¸ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐµ Ð´Ð»Ñ Ð¿Ð»Ð°ÑÑÐ¾ÑÐ¼Ñ Android. Ð ÑÐ¾Ð´Ðµ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ»Ð¾ ÑÐ¾Ð·Ð´Ð°Ð½Ð¾ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ðµ, Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ ÐºÐ¾ÑÐ¾ÑÐ¾Ð³Ð¾ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´Ð¸ÑÑÑ ÑÐµÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð±ÑÑÑÑÐ¾Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ ÑÑÐµÐ¹Ð¼Ð²Ð¾ÑÐºÐ¾Ð² Ð¿Ð¾ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð·Ð°Ð²Ð¸ÑÐ¸Ð¼Ð¾ÑÑÑÐ¼Ð¸. Ð ÑÐ°Ð±Ð¾ÑÐµ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ñ Ð´Ð°Ð½Ð½ÑÐµ Ñ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐ°Ð¼Ð¸ ÑÐµÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÑÐµÐ¹Ð¼Ð²Ð¾ÑÐºÐ¾Ð² Ð½Ð° ÑÑÐ´Ðµ Android-ÑÑÑÑÐ¾Ð¹ÑÑÐ², Ð° ÑÐ°ÐºÐ¶Ðµ Ð¿ÑÐ¸Ð²ÐµÐ´ÐµÐ½Ñ Ð¿ÑÐµÐ¸Ð¼ÑÑÐµÑÑÐ²Ð° Ð¸ Ð½ÐµÐ´Ð¾ÑÑÐ°ÑÐºÐ¸ ÑÐµÑÑÐ¸ÑÑÐµÐ¼ÑÑ ÑÑÐµÐ¹Ð¼Ð²Ð¾ÑÐºÐ¾Ð².
description: In this paper presented the concept of dependencies during the development of a software product is considered in the context of object-oriented programming and the Java and Kotlin languages, and the analysis of frameworks for managing dependencies during development for the Android platform. As a result of the work, an application was created that is used to test the performance of various dependency management frameworks. The paper presents data with the results of testing frameworks on a number of devices
title: Optimal combination of contrast agent administration and reconstruction parameters for automatic contouring of abdominal structures on CT imaging using artificial intelligence
Creators: name: Rizzetto, Francesco
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Abdomen
subject: Artificial Intelligence
subject: Contrast agents
subject: CT
subject: Segmentation
subject: Quality assurance

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Medical imaging segmentation is an essential aspect of various areas of growing interest in radiology, including radiomics, patient-specific virtual modeling and 3D printing. To reduce the time and labor required for contouring medical images, an...
Experimental investigation of laminar turbulent intermittency in pipe flow
Creators: name: Samanta, Devranjan
name: de Lozar, Alberto
name: Hof, Bjoern
Publisher: name: arXiv
Year: 2010
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In shear flows turbulence first occurs in the form of localized structures (puffs/spots) surrounded by laminar fluid. We here investigate such spatially intermittent flows in a pipe experiment showing that turbulent puffs have a well defined interaction distance, which sets the minimum spacing of puffs as well as the maximum observable turbulent fraction. Two methodologies are employed here. Starting from a laminar flow puffs can be created by locally injecting a jet of fluid through the pipe wall. When the perturbation is applied periodically at low frequencies, as expected, a regular sequence of puffs is observed where the puff spacing is given by the ratio of the mean flow speed to the perturbation frequency. On the other hand, at large frequencies puffs are found to interact and annihilate each other. Varying the perturbation frequency an interaction distance can be determined. In the second set of experiments, the Reynolds number is reduced suddenly from fully developed turbulence to the intermittent regime.The resulting flow reorganizes itself to a sequence of constant size puffs which, unlike in Couette and Taylor Couette flow are randomly spaced. The minimum distance between the turbulent patches is identical to the puff interaction length. The puff interaction length is found to be in excellent agreement with the wavelength of regular stripe and spiral patterns in plane Couette and Taylor-Couette flow. We propose that the same interaction mechanism is present in these flows.
Fast, large volume, GPU enabled simulations for the Ly-alpha forest: power spectrum forecasts for baryon acoustic oscillation experiments
Creators: name: Greig, Bradley
name: Bolton, James S.
name: Wyithe, J. Stuart B.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: High redshift measurements of the baryonic acoustic oscillation scale (BAO) from large Ly-alpha forest surveys represent the next frontier of dark energy studies. As part of this effort, efficient simulations of the BAO signature from the Ly-alpha forest will be required. We construct a model for producing fast, large volume simulations of the Ly-alpha forest for this purpose. Utilising a calibrated semi-analytic approach, we are able to run very large simulations in 1 Gpc^3 volumes which fully resolve the Jeans scale in less than a day on a desktop PC using a GPU enabled version of our code. The Ly-alpha forest spectra extracted from our semi-analytical simulations are in excellent agreement with those obtained from a fully hydrodynamical reference simulation. Furthermore, we find our simulated data are in broad agreement with observational measurements of the flux probability distribution and 1D flux power spectrum. We are able to correctly recover the input BAO scale from the 3D Ly-alpha flux power spectrum measured from our simulated data, and estimate that a BOSS-like 10^4 deg^2 survey with ~15 background sources per square degree and a signal-to-noise of ~5 per pixel should achieve a measurement of the BAO scale to within ~1.4 per cent. We also use our simulations to provide simple power-law expressions for estimating the fractional error on the BAO scale on varying the signal-to-noise and the number density of background sources. The speed and flexibility of our approach is well suited for exploring parameter space and the impact of observational and astrophysical systematics on the recovery of the BAO signature from forthcoming large scale spectroscopic surveys.
description: 16 pages, 11 figures, accepted to MNRAS