cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Verbesserte Präzision bei der Pfannenplatzierung durch navigierte Implantation mit Ultraschallregistrierung
Creators: name: Kiefer, Hartmuth
name: Sambo, Keosun
name: Leder, Björn
name: Wassilew, Georgi
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: Hüftgelenkersatz
subject: Navigation
subject: Ultraschall
subject: 610 Medical sciences; Medicine

description: Fragestellung: Kann die Pfannenposition mit Hilfe ultraschallgestützter Navigationstechnik verbessert werden? Gibt es Unterschiede zur navigationsüblichen Pointerregistrierung? Methodik: Im Rahmen einer prospektiv randomisierten Studie wurde 88 konsekutiven Patienten eine zementfreie[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2016)
DISCO: A 3D Moving-Mesh Magnetohydrodynamics Code Designed for the Study of Astrophysical Disks
Creators: name: Duffell, Paul C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: This work presents the publicly available moving-mesh magnetohydrodynamics code DISCO. DISCO is efficient and accurate at evolving orbital fluid motion in two and three dimensions, especially at high Mach number. DISCO employs a moving-mesh approach utilizing a dynamic cylindrical mesh that can shear azimuthally to follow the orbital motion of the gas. The moving mesh removes diffusive advection errors and allows for longer timesteps than a static grid. Magnetohydrodynamics is implemented in DISCO using an HLLD Riemann solver and a novel constrained transport scheme which is compatible with the mesh motion. DISCO is tested against a wide variety of problems, which are designed to test its stability, accuracy and scalability. In addition, several magnetohydrodynamics tests are performed which demonstrate the accuracy and stability of the new constrained transport approach, including two tests of the magneto-rotational instability (MRI); one testing the linear growth rate and the other following the instability into the fully turbulent regime.
description: Accepted to ApJS
A small scale structure model of jet based on the observation of microvariability
Creators: name: Xu, Jingran
name: Hu, Shaoming
name: Chen, Xu
name: Jiang, Yunguo
name: Alexeeva, Sofya
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We developed a multi-region radiation model for the evolution of flux and spectral index with time. In this model, each perturbation component in the jet produces an independent flare. The model can be used to study the decomposition of microvariability, the structural scale of the perturbed components, and the physical parameters of the acceleration processes. Based on the shock acceleration model in relativistic jet, the influence of acceleration parameters on multiband flare parameters is calculated. We present the results of multiband optical microvariability of the blazar BL Lacertae observed performed during 89 nights in the period from 2009 to 2021, and use them as a sample for model fitting. The results show that both the amplitude and duration of flares decomposed from the microvariability light curves confirm a lognormal distribution. The time delays between the optical bands follow the normal distribution and amount to several minutes, that corroborates with both predictions from the theoretical model and the calculation of the discrete correlation function (DCF). Using the spectral index evolution and the simultaneous fitting of the multiband variability curves, we obtain the acceleration and radiation parameters to constrain and distinguish the origins of different flares. Based on the flare decomposition, we can well reproduce the time-domain evolution trends of the optical variation and energy spectrum, and explain the various redder-when-brighter (RWB) and/or bluer-when-brighter (BWB) behavior.
description: To be published in ApJS
title: Klingennagel (LBN) versus winkelstabile Platte (PHILOS) bei der proximalen Humerusfraktur des älteren Patienten – Ergebnisse einer prospektiv-randomisierten Studie
Creators: name: Kerschbaum, Christian
name: Seebauer, Tobias
name: Plath, Johannes
name: Fink, Matthias
name: Littwin, Timm
name: Schmid, Ursula
name: Mayr, Edgar
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: proximale Humerusfraktur
subject: DASH-Score
subject: Constant-Score
subject: 610 Medical sciences; Medicine

description: Fragestellung: Für die Versorgung operationspflichtiger proximaler Humerusfrakturen stehen unterschiedliche Platten- und Nagelsysteme zur Verfügung. Bislang konnte in der Literatur kein Vorteil für eines der Verfahren speziell beim älteren Patienten gezeigt werden. Ziel dieser prospektiv-randomisierten[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2016)
Hierarchies of Manakov-Santini Type by Means of Rota-Baxter and Other Identities
Creators: name: Szablikowski, Blazej M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The Lax-Sato approach to the hierarchies of Manakov-Santini type is formalized in order to extend it to a more general class of integrable systems. For this purpose some linear operators are introduced, which must satisfy some integrability conditions, one of them is the Rota-Baxter identity. The theory is illustrated by means of the algebra of Laurent series, the related hierarchies are classified and examples, also new, of Manakov-Santini type systems are constructed, including those that are related to the dispersionless modified Kadomtsev-Petviashvili equation and so called dispersionless r-th systems.
Role of Local Ru Hexamers in Superconductivity of Ruthenium Phosphide
Creators: name: Koch, Robert J.
name: Aryal, Niraj
name: Ivashko, Oleh
name: Liu, Yu
name: Abeykoon, Milinda
name: Bauer, Eric D.
name: Zimmermann, Martin v.
name: Yin, Weiguo
name: Petrovic, Cedomir
name: Bozin, Emil S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Superconductivity in binary ruthenium pnictides occurs proximal to and upon suppression of a mysterious non-magnetic ground state, preceded by a pseudogap phase associated with Fermi surface instability, and its critical temperature, T$_{c}$, is maximized around the pseudogap quantum critical point. By analogy with isoelectronic iron based counterparts, antiferromagnetic fluctuations became "usual suspects" as putative mediators of superconducting pairing. Here we report on a high temperature local symmetry breaking in RuP, the parent of the maximum-Tc branch of these novel superconductors, revealed by combined nanostructure-sensitive powder and single crystal X-ray total scattering experiments. Large local Ru$_{6}$ hexamer distortions associated with orbital-charge trimerization form above the two-stage electronic transition in RuP. While hexamer ordering enables the nonmagnetic ground state and presumed complex oligomerization, the relevance of pseudogap fluctuations for superconductivity emerges as a distinct prospect. As a transition metal system in which partial d-manifold filling combined with high crystal symmetry promotes electronic instabilities, this represents a further example of local electronic precursors underpinning the macroscopic collective behavior of quantum materials.
description: 10 pages 6 figures
Competition and duality correspondence between chiral and superconducting channels in (2+1)-dimensional four-fermion models with fermion number and chiral chemical potentials
Creators: name: Ebert, D.
name: Khunjua, T. G.
name: Klimenko, K. G.
name: Zhukovsky, V. C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper the duality correspondence between fermion-antifermion and difermion interaction channels is established in two (2+1)-dimensional Gross-Neveu type models with a fermion number chemical potential $μ$ and a chiral chemical potential $μ_5$. The role and influence of this property on the phase structure of the models are investigated. In particular, it is shown that the chemical potential $μ_5$ promotes the appearance of dynamical chiral symmetry breaking, whereas the chemical potential $μ$ contributes to the emergence of superconductivity.
description: version accepted for publication in PRD; discussion added in Introduction, sect. III A and sect. IV B 1; new references added; 20 pages, 10 figures
Preparing multi-actor projects in a co-creative way – PREMIERE
Creators: name: Von Muenchhausen, Susanne
Publisher: name: Zenodo
Year: 2022
Subjects: Co-Innovation
Multi-actor project
project proposal
Agricultural Knowledge and Innovation Systems

description: This PPT shows presents the project before it started officialy in January 2023. The audience was the SCAR-AKIS strategic working group.
title: Korreliert ein Injury Severity Score >16 mit der Auftretensrate von Missed Injury Ereignissen?
Creators: name: Barzen, Stefan
name: Schweigkofler, Uwe
name: Hoffmann, Reinhard
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: Missed Injury
subject: ISS
subject: Injury Severity Score
subject: Schockraumpatient
subject: 610 Medical sciences; Medicine

description: Fragestellung: Im Rahmen der Behandlung von Schockraumpatienten ereignen sich trotz bestehender hoher Standards immer wieder Missed Injury Ereignisse. Zur Klassifikation des Schweregrades wird der ISS genutzt. Ein Wert >16 Punkten entspricht hierbei schwerverletzten Patienten. Um eine mögliche[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2016)
Ebach, Jürgen, Genesis 37-50
Creators: name: Krüger, Tillman Horst Werner
Publisher: name: Jahrbuch für evangelikale Theologie
Year: 2025

description: 1823350925
description: Jahrbuch für evangelikale Theologie, V. 23 (2009): Jahrbuch für evangelikale Theologie, Band 23
Hungarian Qubit Assignment for Optimized Mapping of Quantum Circuits on Multi-Core Architectures
Creators: name: Escofet, Pau
name: Ovide, Anabel
name: Almudever, Carmen G.
name: Alarcón, Eduard
name: Abadal, Sergi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Modular quantum computing architectures offer a promising alternative to monolithic designs for overcoming the scaling limitations of current quantum computers. To achieve scalability beyond small prototypes, quantum architectures are expected to adopt a modular approach, featuring clusters of tightly connected quantum bits with sparser connections between these clusters. Efficiently distributing qubits across multiple processing cores is critical for improving quantum computing systems' performance and scalability. To address this challenge, we propose the Hungarian Qubit Assignment (HQA) algorithm, which leverages the Hungarian algorithm to improve qubit-to-core assignment. The HQA algorithm considers the interactions between qubits over the entire circuit, enabling fine-grained partitioning and enhanced qubit utilization. We compare the HQA algorithm with state-of-the-art alternatives through comprehensive experiments using both real-world quantum algorithms and random quantum circuits. The results demonstrate the superiority of our proposed approach, outperforming existing methods, with an average improvement of 1.28$\times$.
Extra dimensions with light and heavy neutral leptons: An application to CE$ν$NS
Creators: name: Khan, Amir N.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We explore the possibility of relating extra dimensions with light and heavy Dirac-type neutral leptons and develop a framework for testing them in various laboratory experiments. The Kaluza-Klein modes in the large extra dimension models of the light neutral leptons could mix with the standard model neutrinos and produce observable effects in the oscillation experiments. We show that the chirality flipping up-scattering processes occurring through either neutrino magnetic dipole moment or the weakly coupled scalar interactions can also produce heavy Kaluza-Klein modes of the corresponding right-handed neutral leptons propagating in one or more extra dimensions. However, to conserve the four-dimensional energy-momentum, their masses must be below the maximum energy of the neutrinos in the initial state. The appreciable size of extra dimensions connected with these heavy neutral leptons can thus affect the cross-sections of these processes. This framework applies to any up-scattering process. Our work here focuses only on its application to the coherent elastic neutrino-nucleus scattering process. We derive constraints on the size of extra dimensions using the COHERENT data in oscillation and up-scattering processes. For model with one large extra dimension for the light neutral leptons, we obtain the limits, $R \sim 3 \ μ$m (NH) and $R \sim 2.5 \ μ$m (IH), on the size of extra dimension corresponding to the absolute mass limit, $m_{0} \leq 3 \times 10^{-3}$ eV at 90$\%$ C.L. from the short-baseline oscillations. Using the up-scattering process for heavy neutral leptons, we obtain new parameter spaces between the size of extra dimensions and parameters of the dipole or scalar interactions.
description: 30 pages, 6 figures
title: Evaluation des alterstraumatologischen Behandlungkonzepts anhand zweier Studienzentren mit divergierender Klinikstruktur
Creators: name: Gleich, Johannes
name: Neuerburg, Carl
name: Förch, Stefan
name: Löffel, Cornelia
name: Böcker, Wolfgang
name: Mayr, Edgar
name: Kammerlander, Christian
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: Alterstraumatologie
subject: Fragilitätsfraktur
subject: Sarkopenie
subject: Polypharmazie
subject: 610 Medical sciences; Medicine

description: Fragestellung: Der demographische Wandel führt zu einer steigenden Zahl älterer unfallchirurgischer Patienten. Die Behandlung dieser Patienten stellt oftmals eine interdisziplinäre Herausforderung dar auf Grund diverser Besonderheiten wie der reduzierten Knochenqualität, Sarkopenie[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2016)
Are disentangled representations all you need to build speaker anonymization systems?
Creators: name: Champion, Pierre
name: Jouvet, Denis
name: Larcher, Anthony
Publisher: name: arXiv
Year: 2022
Subjects: subject: Sound (cs.SD)
subject: Artificial Intelligence (cs.AI)
subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Speech signals contain a lot of sensitive information, such as the speaker's identity, which raises privacy concerns when speech data get collected. Speaker anonymization aims to transform a speech signal to remove the source speaker's identity while leaving the spoken content unchanged. Current methods perform the transformation by relying on content/speaker disentanglement and voice conversion. Usually, an acoustic model from an automatic speech recognition system extracts the content representation while an x-vector system extracts the speaker representation. Prior work has shown that the extracted features are not perfectly disentangled. This paper tackles how to improve features disentanglement, and thus the converted anonymized speech. We propose enhancing the disentanglement by removing speaker information from the acoustic model using vector quantization. Evaluation done using the VoicePrivacy 2022 toolkit showed that vector quantization helps conceal the original speaker identity while maintaining utility for speech recognition.
General CPT-even dimension-five nonminimal couplings between fermions and photons yielding EDM and MDM
Creators: name: Araujo, Jonas B.
name: Casana, Rodolfo
name: Ferreira, Manoel M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this letter, we examine a new class of CPT-even nonminimal interactions, between fermions and photons, deprived of higher order derivatives, that yields electric dipole moment (EDM) and magnetic dipole moment (MDM) in the context of the Dirac equation. The couplings are dimension-five CPT-even and Lorentz-violating nonminimal structures, composed of a rank-2 tensor, $T_{μν}$, the electromagnetic tensor, and gamma matrices, being addressed in its axial and non-axial Hermitian versions, and also comprising general possibilities. We then use the electron's anomalous magnetic dipole moment and electron electric dipole moment measurements to reach upper bounds of $1$ part in $10^{20}$ and $10^{25}$ (eV )$^{-1}$.
title: Einfluss PI3-Kinase-, cAMP- und cGMP-vermittelter Signalkaskaden auf die TGF β/Insulin-induzierte Chondrogenese von humanen Fettgewebe-stämmigen Stammzellen in vitro
Creators: name: Bollmann, Anne
name: Suschek, Christoph V.
name: Windolf, Joachim
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: ASC Chondrogenese TGF cAMP cGMP Insulin PI3K
subject: 610 Medical sciences; Medicine

description: Fragestellung: Die Regeneration von Knorpel nach Trauma ist ein langer und oft erfolgloser Prozess. Aufgrund der Tatsache, dass Knorpel nicht über Blutgefäße mit Nährstoffen versorgt wird, sondern durch Diffusion von Synovialflüssigkeit, ist die Regeneration über einwandernde[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2016)
Stochastic Search with Poisson and Deterministic Resetting
Creators: name: Bhat, Uttam
name: De Bacco, Caterina
name: Redner, S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate a stochastic search process in one, two, and three dimensions in which $N$ diffusing searchers that all start at $x_0$ seek a target at the origin. Each of the searchers is also reset to its starting point, either with rate $r$, or deterministically, with a reset time $T$. In one dimension and for a small number of searchers, the search time and the search cost are minimized at a non-zero optimal reset rate (or time), while for sufficiently large $N$, resetting always hinders the search. In general, a single searcher leads to the minimum search cost in one, two, and three dimensions. When the resetting is deterministic, several unexpected feature arise for $N$ searchers, including the search time being independent of $T$ for $1/T\to 0$ and the search cost being independent of $N$ over a suitable range of $N$. Moreover, deterministic resetting typically leads to a lower search cost than in stochastic resetting.
description: 23 pages, 9 figures, IOP format. Revised version: figure added, introductory text added, references added, and various minor changes incorporated. V3: Final version to appear in JSTAT. A few more references added
Absence of spontaneous time-reversal symmetry breaking and ferromagnetism in superconducting NiBi3 single crystal
Creators: name: Wang, Jingyuan
name: Farhang, Camron
name: Yue, Di
name: Jin, Xiaofeng
name: Zhu, Xiangde
name: Xia, Jing
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Recent experiments have pointed to a chiral p-wave-like superconductivity in epitaxial Bi/Ni bilayers that are spontaneously time-reversal symmetry breaking (TRSB), making it a promising platform for exploring physics useful for topologically protected quantum computing. Quite intriguingly, evidence has emerged that in non-epitaxial Bi/Ni bilayers, superconductivity arises due to the formation of NiBi3, which has been reported to host coexisting ferromagnetic and superconducting orders at the surface. We perform high resolution surface magneto-optic Kerr effect (SMOKE) measurements using a Sagnac interferometer on single crystal NiBi3 and find no sign of any spontaneous Kerr signal except for contributions from trapped vortices. This strongly indicates the absence of TRSB in NiBi3, whether due to TRSB in the superconducting state or any coexisting ferromagnetism, and we conclude that the superconductivity found in non-epitaxial Bi/Ni is distinctively different from that in epitaxial Bi/Ni.
description: accepted version at Phys. Rev. B
Multicolor light curves simulations of Population III core-collapse supernovae: from shock breakout to $^{56}$Co decay
Creators: name: Tolstov, Alexey
name: Nomoto, Ken'ichi
name: Tominaga, Nozomu
name: Ishigaki, Miho
name: Blinnikov, Sergey
name: Suzuki, Tomoharu
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The properties of the first generation of stars and their supernova (SN) explosions remains unknown due to the lack of their actual observations. Recently many transient surveys are conducted and the feasibility of the detection of supernovae (SNe) of Pop III stars is growing. In this paper we study the multicolor light curves for a number of metal-free core-collapse SN models (25-100 M$_{\odot}$) to provide the indicators for finding and identification of first generation SNe. We use mixing-fallback supernova explosion models which explain the observed abundance patterns of metal poor stars. Numerical calculations of the multicolor light curves are performed using multigroup radiation hydrodynamic code STELLA. The calculated light curves of metal-free SNe are compared with non-zero metallicity models and several observed SNe. We have found that the shock breakout characteristics, the evolution of the photosphere's velocity, the luminosity, the duration and color evolution of the plateau - all the SN phases are helpful to estimate the parameters of SN progenitor: the mass, the radius, the explosion energy and the metallicity. We conclude that the multicolor light curves can be potentially used to identify first generation SNe in the current (Subaru/HSC) and future transient surveys (LSST, JWST). They are also suitable for identification of the low-metallicity SNe in the nearby Universe (PTF, Pan-STARRS, Gaia).
description: 15 pages, 19 figures; Accepted for publication in Astrophysical Journal, February 26, 2016
Marca personal e identidad digital
Creators: name: García-Holgado, Alicia
Publisher: name: Zenodo
Year: 2023
Subjects: marca personal
ORCID
Scopus
ResearchID
WoS
Google Scholar
identidad digital
identidad del investigador

description: Material del taller realizado en el marco de la estancia internacional de investigación en la Universidad Andrés Bello, Chile, en la sede Concepción, con el apoyo del proyecto "Ciencia e Innovación para el 2030". Taller híbrido para profesorado e investigadores de la UNAB.
Effects of the formation time of parton shower on jet quenching in heavy-ion collisions
Creators: name: Zhang, Mengxue
name: He, Yang
name: Cao, Shanshan
name: Yi, Li
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Jet quenching has successfully served as a hard probe to study the properties of Quark-Gluon Plasma (QGP). As a multi-particle system, jets take time to develop from a highly virtual parton to a group of partons close to mass shells. In this study, we present a systematical study on the effects of this formation time on jet quenching in relativistic nuclear collisions. Jets from initial hard scatterings were simulated with Pythia, and their interactions with QGP were described using a Linear Boltzmann Transport (LBT) model that incorporates both elastic and inelastic scatterings between jet partons and the thermal medium. Three different estimations of the jet formation time were implemented and compared, including instantaneous formation, formation from single splitting, and formation from sequential splittings, before which no jet-medium interaction was assumed. We found that deferring the jet-medium interaction with a longer formation time not only affects the overall magnitude of the nuclear modification factor of jets, but also its dependence on the jet transverse momentum.
Dissipative Effect in Long Baseline Neutrino Experiments
Creators: name: Oliveira, Roberto L. N.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The propagation of neutrinos in long baselines experiments may be influenced by dissipation effects. Using Lindblad Master Equation we evolve neutrinos taking into account these dissipative effects. The MSW and the dissipative effects may change the probabilities behavior. In this work, we show and explain how the behavior of the probabilities can change due to the decoherence and relaxation effects acting individually with the MSW effect. A new exotic peak appears in this case and we show the difference between the decoherence and relaxation effects in the appearance of this peak. We also adapt the usual approximate expression for survival and appearance probabilities with all possible decoherence effects. We suppose the baseline of DUNE and show how each decoherence parameters change the probabilities analyzing the possible modification using numeric and analytic approach.
description: new version with new references
Auto-Lesion Segmentation with a Novel Intensity Dark Channel Prior for COVID-19 Detection
Creators: name: Saleh, Basma Jumaa
name: Omar, Zaid
name: Bhateja, Vikrant
name: Izhar, Lila Iznita
Publisher: name: arXiv
Year: 2023
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Metric Geometry (math.MG)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: During the COVID-19 pandemic, medical imaging techniques like computed tomography (CT) scans have demonstrated effectiveness in combating the rapid spread of the virus. Therefore, it is crucial to conduct research on computerized models for the detection of COVID-19 using CT imaging. A novel processing method has been developed, utilizing radiomic features, to assist in the CT-based diagnosis of COVID-19. Given the lower specificity of traditional features in distinguishing between different causes of pulmonary diseases, the objective of this study is to develop a CT-based radiomics framework for the differentiation of COVID-19 from other lung diseases. The model is designed to focus on outlining COVID-19 lesions, as traditional features often lack specificity in this aspect. The model categorizes images into three classes: COVID-19, non-COVID-19, or normal. It employs enhancement auto-segmentation principles using intensity dark channel prior (IDCP) and deep neural networks (ALS-IDCP-DNN) within a defined range of analysis thresholds. A publicly available dataset comprising COVID-19, normal, and non-COVID-19 classes was utilized to validate the proposed model's effectiveness. The best performing classification model, Residual Neural Network with 50 layers (Resnet-50), attained an average accuracy, precision, recall, and F1-score of 98.8%, 99%, 98%, and 98% respectively. These results demonstrate the capability of our model to accurately classify COVID-19 images, which could aid radiologists in diagnosing suspected COVID-19 patients. Furthermore, our model's performance surpasses that of more than 10 current state-of-the-art studies conducted on the same dataset.
description: 8 pages, 2 figures, The 1st International Conference on Electronic and Computer Engineering, Universiti Teknologi Malaysia, "accept"
A unified framework for harmonic analysis of functions on directed graphs and changing data
Creators: name: Mhaskar, Hrushikesh N.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: We present a general framework for studying harmonic analysis of functions in the settings of various emerging problems in the theory of diffusion geometry. The starting point of the now classical diffusion geometry approach is the construction of a kernel whose discretization leads to an undirected graph structure on an unstructured data set. We study the question of constructing such kernels for directed graph structures, and argue that our construction is essentially the only way to do so using discretizations of kernels. We then use our previous theory to develop harmonic analysis based on the singular value decomposition of the resulting non-self-adjoint operators associated with the directed graph. Next, we consider the question of how functions defined on one space evolves to another space in the paradigm of changing data sets recently introduced by Coifman and Hirn. While the approach of Coifman and Hirn require that the points on one space should be in a known one-to-one correspondence with the points on the other, our approach allows the identification of only a subset of landmark points. We introduce a new definition of distance between points on two spaces, construct localized kernels based on the two spaces and certain interaction parameters, and study the evolution of smoothness of a function on one space to its lifting to the other space via the landmarks. We develop novel mathematical tools that enable us to study these seemingly different problems in a unified manner.
description: Submitted earlier version on July 1, 2015; accepted for publication in Appl. Comput. Harm. Anal. Available online June 28, 2016, 28 pages
title: Remodeling human osteoarthritic articular cartilage rAAV-mediated via combined gene transfer and overexpression of TGF-beta and sox9
Creators: name: Tao, Ke
name: Frisch, Janina
name: Rey Rico, Ana
name: Venkatesan, Jagadeesh K.
name: Schmitt, Gertrud
name: Madry, Henning
name: Lin, Jian Hao
name: Cucchiarini Madry, Magali
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: Gene Therapy
subject: Regenerative Medicine
subject: Cartilage
subject: 610 Medical sciences; Medicine

description: Objectives: Direct administration of therapeutic candidate gene sequences using the safe and effective recombinant adeno-associated virus (rAAV) vectors is a promising strategy to stimulate the biologic activities of articular chondrocytes as an adapted tool to treat human osteoarthritic (OA) cartilage.[for full text, please go to the a.m. URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2016)
Domain Adaptive Few-Shot Open-Set Learning
Creators: name: Pal, Debabrata
name: More, Deeptej
name: Bhargav, Sai
name: Tamboli, Dipesh
name: Aggarwal, Vaneet
name: Banerjee, Biplab
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Few-shot learning has made impressive strides in addressing the crucial challenges of recognizing unknown samples from novel classes in target query sets and managing visual shifts between domains. However, existing techniques fall short when it comes to identifying target outliers under domain shifts by learning to reject pseudo-outliers from the source domain, resulting in an incomplete solution to both problems. To address these challenges comprehensively, we propose a novel approach called Domain Adaptive Few-Shot Open Set Recognition (DA-FSOS) and introduce a meta-learning-based architecture named DAFOSNET. During training, our model learns a shared and discriminative embedding space while creating a pseudo open-space decision boundary, given a fully-supervised source domain and a label-disjoint few-shot target domain. To enhance data density, we use a pair of conditional adversarial networks with tunable noise variances to augment both domains closed and pseudo-open spaces. Furthermore, we propose a domain-specific batch-normalized class prototypes alignment strategy to align both domains globally while ensuring class-discriminativeness through novel metric objectives. Our training approach ensures that DAFOS-NET can generalize well to new scenarios in the target domain. We present three benchmarks for DA-FSOS based on the Office-Home, mini-ImageNet/CUB, and DomainNet datasets and demonstrate the efficacy of DAFOS-NET through extensive experimentation
title: GMP-compliant production of a mesenchymal stem cell based cartilage therapy
Creators: name: Schmidt, Christian
name: Petters, Oliver
name: Hütter, Gero
name: Marquaß, Bastian
name: Henkelmann, Ralf
name: Schulz, Ronny
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: Translation
subject: MSC based therapy
subject: GMP production
subject: 610 Medical sciences; Medicine

description: Objectives: Due to the limited regeneration potential of articular cartilage, it is still an ambitious clinical challenge to treat cartilage defects with long-term success. Current treatment modalities like microfracture and (matrix-associated) autologous chondrocyte transplantation (M/ACT) have[for full text, please go to the a.m. URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2016)
Spatial Navigation in Western Arnhem Land - A Novel Approach to Contextualize Geospatial and Language Data. NZGRC 2022.
Creators: name: Cialone, Claudia
Publisher: name: figshare
Year: 2022
Subjects: subject: 90903 Geospatial Information Systems
subject: FOS: Environmental engineering

description: This chapter is part of a wider research project focussed on how Bininj Kunwok people from Western Arnhem, in the top end of Australia, conceptualize their land, the strategies they adopt to orientate and navigate through it, and how they verbalize all this. This chapter focuses on the design and application of a novel field methodology to record spatially contextualized language in relation to navigation largely absent in previous empirical methodological approaches related to geospatial and language studies. The most innovative aspect of the method is the synchronization of GoPro cameras and GPS tracks during people’s walks and the creation of small-scale navigation stimuli to enhance further elicitation of navigation-related language. The use of this novel methodology in addition to paving the way for more research aimed at collecting geospatial and linguistic navigation data on the go, has allowed to confirm and expand on previous ethnographical evidence related to Bininj Kunwok use of orientation systems and led to the discovery of their navigation strategies.
La revisión sistemática de la literatura
Creators: name: García-Holgado, Alicia
Publisher: name: Zenodo
Year: 2023
Subjects: revisión de la literatura
SLR
systematic literature review
mapeo sistemático de la literatura
systematic mapping literature review

description: Taller para investigadores de la Universidad Andrés Bello (Chile) en formato híbrido, con asistencia presencial en la sede de Concepción y participación de investigadores de las diferentes sedes. Taller en el marco del proyecto Ciencia e Innovación para el 2030 de la UNAB.
Pair Fireball Precursors of Neutron Star Mergers
Creators: name: Metzger, Brian D.
name: Zivancev, Charles
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: If at least one neutron star (NS) is magnetized in a binary NS merger, then the orbital motion of the conducting companion during the final inspiral induces a strong voltage and current along the magnetic field lines connecting the NSs. If a modest fraction, eta, of the extracted electromagnetic power extracted accelerates relativistic particles, the resulting gamma-ray emission a compact volume will result in the formation of an electron-positron pair fireball. Applying a steady-state pair wind model, we quantify the detectability of the precursor fireball with gamma-ray satellites. For eta ~ 1 the gamma-ray detection horizon of D_max ~ 10(Bd/1e14 G)^{3/4} Mpc is much closer than the Advanced LIGO/Virgo horizon of 200 Mpc, unless the NS surface magnetic field strength is very large, Bd > 1e15 G. Given the quasi-isotropic nature of the emission, mergers with weaker NS fields could contribute a nearby population of short gamma-ray bursts. Power not dissipated close to the binary is carried to infinity along the open field lines by a large scale Poynting flux. Reconnection within this outflow, well outside of the pair photosphere, provides a potential site for non-thermal emission, such as a coherent millisecond radio burst.
description: 5 pages, 2 figures
Critical points in coupled Potts models and correlated percolation
Creators: name: Lamsen, Noel
name: Diouane, Youness
name: Delfino, Gesualdo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use scale invariant scattering theory to exactly determine the renormalization group fixed points of a $q$-state Potts model coupled to an $r$-state Potts model in two dimensions. For integer values of $q$ and $r$ the fixed point equations are very constraining and show in particular that scale invariance in coupled Potts ferromagnets is limited to the Ashkin-Teller case ($q=r=2$). Since our results extend to continuous values of the number of states, we can access the limit $r\to 1$ corresponding to correlated percolation, and show that the critical properties of Potts spin clusters cannot in general be obtained from those of Fortuin-Kasteleyn clusters by analytical continuation.
description: 30 pages, 10 figures; published version
Relativistic coupled-cluster study of RaF as a candidate for parity and time reversal violating interaction
Creators: name: Sasmal, Sudip
name: Pathak, Himadri
name: Nayak, Malaya K.
name: Vaval, Nayana
name: Pal, Sourav
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We have employed both Z-vector method and the expectation value approach in the relativistic coupled-cluster framework to calculate the scalar-pseudoscalar (S-PS) P, T -odd interaction constant (W_s) and the effective electric field (Eeff) experienced by the unpaired electron in the ground electronic state of RaF. Further, the magnetic hyperfine structure constants of ^{223}Ra in RaF and ^{223}Ra+ are also calculated and compared with the experimental values wherever available to judge the extent of accuracy obtained in the employed methods. The outcome of our study reveals that the Z-vector method is superior than the expectation value approach in terms of accuracy obtained for the calculation of ground state property. The Z-vector calculation shows that RaF has a high E_eff (52.5 GV/cm) and W_s (141.2 kHz) which makes it a potential candidate for the eEDM experiment.
description: 8 pages, 3 figures
Computational investigation of materials for energy storage applications
Creators: name: Katyal, Naman
name: 0000-0001-8471-5553
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: DFT
Batteries
VASP
PyAMFF
Machine learning
Computational characterization

description: The need for sustainable, economical, and high energy density rechargeable batteries are mandatory to develop next generation consumer electronics, transportation, and stationary energy devices to meet the growing energy demands of the world. In order to meet those challenges, the fundamental understanding of thermodynamics and diffusion processes in battery materials can help achieve the current goals. Atomic-scale simulations using density functional theory coupled with experimental characterization techniques have the capabilities to reveal local atomic environment of battery electrodes and electrolytes which is directly related to the ionic conductivity, stability of electrode-electrolyte interphase, electrode potential, energy density, and rate capabilities. Developing models using atomistic simulations are powerful tools because structural features can be directly compared to experimental characterization results and develop deeper insights into battery processes. In this thesis, a number of atomistic models were developed using computational characterization techniques, which were compared with experiments to develop an accurate understanding of next-generation battery materials for high-energy density applications. These atomistic models were used to compare the catalytic processes in zin-air batteries and the intercalation process in different ion intercalation materials for dual-ion batteries for high energy density and economical application. Furthermore, the computational cost of running electronic structure calculations limits the lengthscale and timescale of simulations to study kinetic processes at experimental timescales, which involve rare events on potential energy surfaces. This work developed a generalized interatomic potential for bulk lithium using a machine learning package PyAMFF to replace density functional theory calculations to study the metal deposition process in batteries.
Generalized disformal Horndeski theories: cosmological perturbations and consistent matter coupling
Creators: name: Takahashi, Kazufumi
name: Minamitsuji, Masato
name: Motohashi, Hayato
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Invertible disformal transformations are a useful tool to investigate ghost-free scalar-tensor theories. By performing a higher-derivative generalization of the invertible disformal transformation on Horndeski theories, we construct a novel class of ghost-free scalar-tensor theories, which we dub generalized disformal Horndeski theories. Specifically, these theories lie beyond the quadratic/cubic DHOST class. We explore cosmological perturbations to identify a subclass where gravitational waves propagate at the speed of light and clarify the conditions for the absence of ghost/gradient instabilities for tensor and scalar perturbations. We also investigate the conditions under which a matter field can be consistently coupled to these theories without introducing unwanted extra degrees of freedom.
description: 23 pages, 2 figures
Charged scalar gravitational collapse in de Sitter spacetime
Creators: name: Zhang, Cheng-Yong
name: Zhang, Shao-Jun
name: Zou, De-Cheng
name: Wang, Bin
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 charged scalar collapse in de Sitter spacetimes. With the electric charge, there is one more competitor to join the competition of dynamics in the gravitational collapse. We find that two factors can influence the electric charge. If we just adjust the charge conjugation, the electric charge effect is always perturbative at the black hole threshold. The electric charge can also be influenced by the initial conditions of perturbations. These initial parameters can be tuned to control the competition in dynamics and present us new and rich physics in the process of gravitational collapse. We give physical explanations on these phenomena found in dynamics. Furthermore we show that the properties of the gravitational collapse are universal and do not depend on spacetime dimensions.
description: 16pages, 8 figures. Accepted by PRD
The LyA-LyC Connection: Evidence for an Enhanced Contribution of UV-faint Galaxies to Cosmic Reionization
Creators: name: Dijkstra, Mark
name: Gronke, Max
name: Venkatesan, Aparna
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The escape of ionizing Lyman Continuum (LyC) photons requires the existence of low-N_HI sightlines, which also promote escape of Lyman-Alpha (Lya). We use a suite of 2500 Lya Monte-Carlo radiative transfer simulations through models of dusty, clumpy interstellar (`multiphase') media from Gronke & Dijkstra (2016), and compare the escape fractions of Lya [f_esc(Lya)] and LyC radiation [f_esc(LyC)]. We find that f_esc(LyC) and f_esc(Lya) are correlated: galaxies with a low f_esc(Lya) consistently have a low f_esc(LyC), while galaxies with a high f_esc(Lya) exhibit a large dispersion in f_esc(LyC). We argue that there is increasing observational evidence that Lya escapes more easily from UV-faint galaxies. The correlation between f_esc(LyC) and f_esc(Lya) then implies that UV-faint galaxies contribute more to the ionizing background than implied by the faint-end slope of the UV-luminosity function. In multiphase gases, the ionizing escape fraction is most strongly affected by the cloud covering factor, f_cl, which implies that f_esc(LyC) is closely connected to the observed Lya spectral line shape. Specifically, LyC emitting galaxies typically having narrower, more symmetric line profiles. This prediction is qualitatively similar to that for `shell models'.
description: 11 pages, 5 figures, ApJ in press. Added section on delayed escape of Lya, clarified model description and motivation. Added references