cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A framework for the analysis of fully coupled normal and tangential contact problems with complex interfaces
Creators: name: Bonari, Jacopo
name: Paggi, Marco
name: Reinoso, José
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: An extension to the interface finite element with eMbedded Profile for Joint Roughness (MPJR interface finite element) is herein proposed for solving the frictional contact problem between a rigid indenter of any complex shape and an elastic body under generic oblique load histories. The actual shape of the indenter is accounted for as a correction of the gap function. A regularised version of the Coulomb friction law is employed for modeling the tangential contact response, while a penalty approach is introduced in the normal contact direction. The development of the finite element (FE) formulation stemming from its variational formalism is thoroughly derived and the model is validated in relation to challenging scenarios for standard (alternative) finite element procedures and analytical methods, such as the contact with multi-scale rough profiles. The present framework enables the comprehensive investigation of the system response due to the occurrence of tangential tractions, which are at the origin of important phenomena such as wear and fretting fatigue, together with the analysis of the effects of coupling between normal and tangential contact tractions. This scenario is herein investigated in relation to challenging physical problems involving arbitrary loading histories.
description: Final version available at https://www.sciencedirect.com/science/article/abs/pii/S0168874X21000895
A Mean-Field Theory for Coarsening Faceted Surfaces
Creators: name: Norris, Scott A.
name: Watson, Stephen J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A mean-field theory is developed for the scale-invariant length distributions observed during the coarsening of one-dimensional faceted surfaces. This theory closely follows the Lifshitz-Slyozov-Wagner theory of Ostwald ripening in two-phase systems [1-3], but the mechanism of coarsening in faceted surfaces requires the addition of convolution terms recalling the work of Smoluchowski [4] and Schumann [5] on coalescence. The model is solved by the exponential distribution, but agreement with experiment is limited by the assumption that neighboring facet lengths are uncorrelated. However, the method concisely describes the essential processes operating in the scaling state, illuminates a clear path for future refinement, and offers a framework for the investigation of faceted surfaces evolving under arbitrary dynamics. [1] I. Lifshitz, V. Slezov, Soviet Physics JETP 38 (1959) 331-339. [2] I. Lifshitz, V. Slyozov, J. Phys. Chem. Solids 19 (1961) 35-50. [3] C. Wagner, Elektrochemie 65 (1961) 581-591. [4] M. von Smoluchowski, Physikalische Zeitschrift 17 (1916) 557-571. [5] T. Schumann, J. Roy. Met. Soc. 66 (1940) 195-207.
AI-Mind data governance and data management protection framework
Creators: name: Kvalheim, Atle Stein
name: Hallock, Harry
name: Marshall, Serena
name: Abdillah Suyuthi
name: Ayllón, Victor
name: Sánchez, José María Peña
name: Haneef Awan
name: Hatlestad-Hall, Christoffer
name: Toraño, Federico Ramírez
name: Miraglia, Francesca
name: Merz, Susanne
name: Glerean, Enrico
name: Renvall, Hanna
name: Yazidi, Anis
name: Haraldsen, Ira
name: Cruz, Andreia
Publisher: name: Zenodo
Year: 2022
Subjects: Deep Learning
Data Quality
Electroencephalography
Magnetoencephalography
Artificial Intelligence
Machine Learning
User Interface

description: In AI-Mind, data initially takes the form of collected data such as participants’ clinical data (e.g., EEG/MEG measurements, neuropsychological testing, etc). This data is then processed and used for developing machine learning (ML)/deep learning (DL) algorithms, thus data later also takes the form of featured data, training, validation, and test datasets and the trained model, plus more. Due to Det Norske Veritas’ (DNV) designation as a Notified Body under the EU medical device regulation (MDR), and thus DNV’s need to maintain impartiality, DNV will not be part of the latter processes nor work with those types of data. As such, D1.4 has been split into two parts: • D1.4 Part 1: AI-Mind Data Governance Framework – specific for AI-Mind; this details relevant regulations, policies and standards related to data governance, the AI-Mind Data Strategy and Data Governance Policy, Data Transfer Agreement (DTA) and Data Protection Impact Assessment (DPIA). Based on these, a plan for AI-Mind Data Management and the types and roles of different Data, Processes and Actors are outlined. • D1.4 Part 2: Managing Data in AI/ML Development Projects in Healthcare – generic for healthcare projects; this details the different types of data used in AI/ML projects, and general considerations on how to handle these types of data. The splitting of this deliverable into two parts enables D1.4 to cover all aspects related to governance and management of the different types of data in AI-Mind, but at two different levels, where Part 1 is specific for AI-Mind, and Part 2 is generic for healthcare projects. D1.4 Part 1 provides a framework which will enable AI-Mind partners to exercise authority and control over the management of the AI-Mind data. This will enable data to be managed and processed in a compliant and secure manner by partners which ensures quality, and security. D1.4 Part 2 introduces the complexities associated with AI/ML development projects in healthcare, outlines the types of data in such projects, and provides general considerations about data quality and management for those data.
Isospin Dependence of Incomplete Fusion Reactions at 25 Mev/a
Creators: name: Amorini, F.
name: Cardella, G.
name: Giuliani, G.
name: Papa, M.
name: Agodi, C.
name: Alba, R.
name: Anzalone, A.
name: Berceanu, I.
name: Cavallaro, S.
name: Chatterjee, M. B.
name: Coniglione, R.
name: De Filippo, E.
name: Di Pietro, A.
name: Geraci, E.
name: Grassi, L.
name: Grzeszczuk, A.
name: Figuera, P.
name: La Guidara, E.
name: Lanzalone, G.
name: Neindre, N. Le
name: Lombardo, I.
name: Maiolino, C.
name: Pagano, A.
name: Pirrone, S.
name: Politi, G.
name: Pop, A.
name: Porto, F.
name: Rizzo, F.
name: Russotto, P.
name: Santonocito, D.
name: Sapienza, P.
name: Verde, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: 40Ca+40,48Ca,46Ti reactions at 25 MeV/A have been studied using the 4p CHIMERA detector. An isospin effect on the competition between incomplete fusion and dissipative binary reaction mechanisms has been observed. The probability of producing a compound system is observed to be lower in the case of N=Z colliding systems as compared to the case of reactions induced on the more neutron rich 48Ca target. Predictions based on CoMD-II calculations show that the competition between fusion-like and dissipative reactions, for the selected centrality, can strongly constraint the parameterization of symmetry energy and its density dependence in the nuclear equation of state.
description: 4 pages 3 figures submitted to phys.rew.Lett
Generalizing quasi-categories via model structures on simplicial sets
Creators: name: Feller, Matthew
Publisher: name: arXiv
Year: 2021
Subjects: subject: Algebraic Topology (math.AT)
subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 55U35, 18N50, 18N60

description: We use Cisinski's machinery to construct and study model structures on the category of simplicial sets whose classes of fibrant objects generalize quasi-categories. We identify a lifting condition which captures the homotopical behavior of quasi-categories without the algebraic aspects and show that there is a model structure whose fibrant objects are precisely those which satisfy this condition. We also identify a localization of this model structure whose fibrant objects satisfy a "special horn lifting" condition similar to the one satisfied by quasi-categories. This special horn model structure leads to a conjecture characterization of the bijective-on-0-simplices trivial cofibrations of the Joyal model structure. We also discuss how these model structures all relate to one another and to the minimal model structure.
description: 40 pages. v3: accepted journal version
Validation of professional experience: A detailed analysis of work experience as a professional development tool
Creators: name: Herrera Estrada, Elvis Javier
Publisher: name: University of Cartagena
Year: 2023
Subjects: subject: Adquisición de habilidades lingüísticas
subject: Aprendizaje continuo
subject: Trabajo dinámico y multicultural

description: In summary, the Foreign Languages Program of the University of Cartagena combine with the Sofitel Legend Santa Clara’s experience has been transformative. Beyond the acquisition of language skills, the program has contributed significantly to my personal growth and understanding of diverse cultures. The value it has added to my role as a receptionist is immeasurable, enabling me to provide an elevated level of service and connect more authentically with our international guests. This language learning journey has not only shaped my linguistic capabilities but has also enriched my perspective on the importance of continuous learning in a dynamic and multicultural work environment. Sofitel Legend Santa Clara's commitment to fostering language proficiency has undoubtedly contributed to my professional success and personal fulfillment.
Tailoring collective motion of kinesin-driven microtubules via topographic landscapes
Creators: name: Araki, Shunya
name: Beppu, Kazusa
name: Kabir, Arif Md. Rashedul
name: Kakugo, Akira
name: Maeda, Yusuke T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Biomolecular motor proteins that generate forces by consuming chemical energy obtained from ATP hydrolysis are pivotal for organizing broad cytoskeletal structures in living cells. The control of such cytoskeletal structures benefits programmable protein patterning; however, our current knowledge is limited owing to the underdevelopment of an engineering approach for controlling pattern formation. Here, we demonstrate the tailoring of assembled patterns of microtubules (MTs) driven by kinesin motors by designing the boundary shape in fabricated microwells. We found an MT bundle structure along the microwell wall and a bridging structure perpendicular to the wall. Corroborated by the theory of self-propelled rods, we further showed that the alignment of MTs defined by the boundary shape determined the transition of the assembled patterns, providing a blueprint to reconstruct bridge structures in microchannels. Our findings provide a geometric rule to tailor the self-organization of cytoskeletons and motor proteins for nanotechnological applications.
description: 19 pages, 4 figures, and supporting information 13 pages
Optimal Linear Sofic Approximations Of Countable Groups
Creators: name: Mallahi-Karai, Keivan
name: Yekta, Maryam Mohammadi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Group Theory (math.GR)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: A countable group G is called k-linear sofic (for some 0
description: Introduction is improved. A minor issue with the proof of Lemma 3.4 is fixed
Tests of the black scholes option pricing model
Creators: name: Chew, Boon Yong
Publisher: name: University of British Columbia
Year: 2010

description: Black and Scholes developed the first Option Pricing Model based on observable variables. This model was subsequently extended by Merton, Cox and Ross, Schwartz and others. In the past, empirical studies using the Black-Scholes option pricing model have obtained fairly satisfactory results. However, these tests have either assumed that discrete hedging will not significantly affect the results in any way or that it causes uncertain returns which could be diversified away. This paper shows that the use of discrete hedging will result in a significant bias in the excess returns. As such a bias is shown to be a function of the distribution of the rate of return on the stock, there is a possibility that the covariance between the excess return on a hedged position and that of the market are not zero. This implies the existence of systematic risk which could not be diversified away. Tests of the Montreal Stock Exchange's option market were also carried out. These tests were subjected to certain statistical problems as assumptions of the regression model used were violated. Despite these violations, the results indicate that profit opportunities do exist in the market. However, it is doubtful that such profit opportunities would still exist if transaction costs etc. are taken into consideration.
New coupled quintessence cosmology
Creators: name: Jesus, J. F.
name: Santos, R. C.
name: Alcaniz, J. S.
name: Lima, J. A. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A component of dark energy has been recently proposed to explain the current acceleration of the Universe. Unless some unknown symmetry in Nature prevents or suppresses it, such a field may interact with the pressureless component of dark matter, giving rise to the so-called models of coupled quintessence. In this paper we propose a new cosmological scenario where radiation and baryons are conserved, while the dark energy component is decaying into cold dark matter (CDM). The dilution of CDM particles, attenuated with respect to the usual $a^{-3}$ scaling due to the interacting process, is characterized by a positive parameter $ε$, whereas the dark energy satisfies the equation of state $p_x=ωρ_x$ ($ω< 0$). We carry out a joint statistical analysis involving recent observations from type Ia supernovae, baryon acoustic oscillation peak, and Cosmic Microwave Background shift parameter to check the observational viability of the coupled quintessence scenario here proposed.
description: 7 pages, 7 figures. Minor corrections to match published version
Invariants of disordered semimetals via the spectral localizer
Creators: name: Schulz-Baldes, Hermann
name: Stoiber, Tom
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The spectral localizer consists of placing the Hamiltonian in a Dirac trap. For topological insulators its spectral asymmetry is equal to the topological invariants, providing a highly efficient tool for numerical computation. Here this technique is extended to disordered semimetals and allows to access the number of Dirac or Weyl points as well as weak invariants. These latter invariants imply the existence of surface states.
description: to appear in Europhys. Lett
KZ equation on the moduli space ${\mathcal M}_{0,5}$ and the harmonic product of multiple polylogarithms
Creators: name: Oi, Shu
name: Ueno, Kimio
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Algebra (math.QA)
subject: Classical Analysis and ODEs (math.CA)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 32G34, 11G55, 11M06

description: In this article, we derive a system of functional relations called the generalized harmonic product relations for hyperlogarithms on the moduli space ${\mathcal M}_{0,5}$ and show that the relations contain the harmonic product of multiple polylogarithms. The generalized harmonic product relations are equivalent to the relations which come from two decompositions of the fundamental solution normalized at the origin of the KZ equation on ${\mathcal M}_{0,5}$.
description: 42 pages, 4 figures
Effect of pressure on the quantum spin ladder material IPA-CuCl3
Creators: name: Hong, Tao
name: Garlea, V. O.
name: Zheludev, A.
name: Fernandez-Baca, J.
name: Manaka, H.
name: Chang, S.
name: Leao, J. B.
name: Poulton, S. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Inelastic neutron scattering and bulk magnetic susceptibility studies of the quantum S=1/2 spin ladder system IPA-CuCl3 are performed under hydrostatic pressure. The pressure dependence of the spin gap $Δ$ is determined. At $P=1.5$ GPa it is reduced to $Δ=0.79$ meV from $Δ=1.17$ meV at ambient pressure. The results allow us to predict a soft-mode quantum phase transition in this system at P$_\mathrm{c}\sim 4$ GPa. The measurements are complicated by a proximity of a structural phase transition that leads to a deterioration of the sample.
description: 5 pages, 4 figures
Dissipative effects from transport and viscous hydrodynamics
Creators: name: Molnar, Denes
name: Huovinen, Pasi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We compare 2->2 covariant transport theory and causal Israel-Stewart hydrodynamics in 2+1D longitudinally boost invariant geometry with RHIC-like initial conditions and a conformal e = 3p equation of state. The pressure evolution in the center of the collision zone and the final differential elliptic flow v2(pT) from the two theories agree remarkably well for a small shear viscosity to entropy density ratio eta/s ~ 1/(4 pi), and also for a large cross section sigma ~ 50 mb. A key to this agreement is keeping ALL terms in the Israel-Stewart equations of motion. Our results indicate promising prospects for the applicability of Israel-Stewart dissipative hydrodynamics at RHIC, provided the shear viscosity of hot and dense quark-gluon matter is indeed very small for the relevant temperatures T ~ 200-500 MeV.
description: Presentation at Quark Matter 2008. 4 pages, 3 figures
Additional file 2 of Exploratory study on classification of diabetes mellitus through a combined Random Forest Classifier
Creators: name: Wang, Xuchun
name: Zhai, Mengmeng
name: Ren, Zeping
name: Ren, Hao
name: Li, Meichen
name: Quan, Dichen
name: Chen, Limin
name: Qiu, Lixia
Publisher: name: figshare
Year: 2021
Subjects: Medicine
Biological Sciences not elsewhere classified
Information Systems not elsewhere classified
Cancer

description: Additional file 2: Questionnaire (in English)
Stationary solution and $H$ theorem for a generalized Fokker-Planck equation
Creators: name: Jauregui, Max
name: Lucchi, Anna L. F.
name: Passos, Jean H. Y.
name: Mendes, Renio S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We investigate a family of generalized Fokker-Planck equations that contains Richardson and porous media equations as members. Considering a confining drift term that is related to an effective potential, we show that each equation of this family has a stationary solution that depends on this potential. This stationary solution encompasses several well-known probability distributions. Moreover, we verify an $H$ theorem for the generalized Fokker-Planck equations using free-energy-like functionals. We show that the energy-like part of each functional is based on the effective potential and the entropy-like part is a generalized Tsallis entropic form, which has an unusual dependence on the position and can be related to a generalization of the Kullback-Leibler divergence. We also verify that the optimization of this entropic-like form subjected to convenient constraints recovers the stationary solution. The analysis presented here includes several studies about $H$ theorems for other generalized Fokker-Planck equations as particular cases.
description: 8 pages. Accepted for publication in Physical Review E
Radiation GRMHD Simulations of the Hard State of Black Hole X-ray Binaries and the Collapse of a Hot Accretion Flow
Creators: name: Dexter, Jason
name: Scepi, Nicolas
name: Begelman, Mitchell C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present global radiation GRMHD simulations of strongly magnetized accretion onto a spinning, stellar mass black hole at sub-Eddington rates. Using a frequency-dependent Monte Carlo procedure for Compton scattering, we self-consistently evolve a two-temperature description of the ion-electron fluid and its radiation field. For an Eddington ratio $L/L_{\rm Edd} \gtrsim 10^{-3}$, the emergent spectrum forms an apparent power law shape from thermal Comptonization up to a cutoff at $\simeq 100$ keV, characteristic of that seen in the hard spectral states of black hole X-ray binary systems. At these luminosities, the radiative efficiency is high ($\approx 24\%$) and results in a denser midplane region where magnetic fields are dynamically important. For $L/L_{\rm Edd} \sim 10^{-2}$, our hot accretion flow appears to undergo thermal runaway and collapse. Our simulations demonstrate that hot accretion flows can be radiatively efficient and provide an estimate of their maximum luminosity.
description: 9 pages, 4 figures, ApJL in press
Systematic Survey of the Correlation between Northern HECR Events and SDSS Galaxies
Creators: name: Takami, Hajime
name: Nishimichi, Takahiro
name: Sato, Katsuhiko
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigated the spatial correlation between the arrival directions of the highest energy cosmic rays (HECRs) detected by the Akeno Giant Air Shower Array (AGASA) with energies above $4 \times 10^{19}$ eV and the positions of galaxies observed by the Sloan Digital Sky Survey (SDSS) within $z = 0.024$. We systematically tested the dependence of the correlation on the redshift ranges and properties of the galaxies, i.e., absolute luminosity, color, and morphology, to understand where HECR sources are and what objects are HECR sources. In the systematic survey, we found potential signals of the positive correlation at small angular scale ($<10^{\circ}$) with the (non-penalized) chance probability less than 5% in intermediate redshift ranges. Then, we estimated penalized probabilities to compensate the trial effects of angular scan, and found that the strongest correlation is produced by early-type galaxies in $0.012 \leq z < 0.018$ at 90% C.L. The possible origin of HECRs which correlating galaxies imply is also discussed.
description: 22 pages, 11 figures, accepted for publication in Progress of Theoretical Physics
Gabber rigidity in hermitian K-theory
Creators: name: Land, Markus
Publisher: name: arXiv
Year: 2022
Subjects: subject: K-Theory and Homology (math.KT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: We note that Gabber's rigidity theorem for the algebraic K-theory of henselian pairs also holds true for hermitian K-theory with respect to arbitrary form parameters.
description: 5 pages
Resolving dichotomy in compact objects through continuous gravitational waves observation
Creators: name: Kalita, Surajit
name: Mondal, Tushar
name: Tout, Christopher A.
name: Bulik, Tomasz
name: Mukhopadhyay, Banibrata
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: More than two dozen soft gamma-ray repeaters (SGRs) and anomalous X-ray pulsars (AXPs) have been detected so far. These are isolated compact objects. Many of them are either found to be associated with supernova remnants or their surface magnetic fields are directly measured, confirming that they are neutron stars (NSs). However, it has been argued that some SGRs and AXPs are highly magnetized white dwarfs (WDs). Meanwhile, the existence of super-Chandrasekhar WDs has remained to be a puzzle. However, not even a single such massive WD has been observed directly. Moreover, some WD pulsars are detected in electromagnetic surveys and some of their masses are still not confirmed. Here we calculate the signal-to-noise ratio for all these objects, considering different magnetic field configurations and thereby estimate the required time for their detection by various gravitational wave (GW) detectors. For SGRs and AXPs, we show that, if these are NSs, they can hardly be detected by any of the GW detectors, while if they are WDs, Big Bang Observer (BBO), DECi-hertz Interferometer Gravitational wave Observatory (DECIGO) and Advanced Laser Interferometer Antenna (ALIA) would be able to detect them within a few days to a year of integration, depending on the magnetic field strength and its configuration. Similarly, if a super-Chandrasekhar WD has a dominant toroidal field, we show that even Laser Interferometer Space Antenna (LISA) and TianQin would be able to detect it within one year of integration. We also discuss how GWs can confirm the masses of the WD pulsars.
description: 10 pages including 12 figures and 2 tables; Accepted for publication in MNRAS
A Geometric Interpretation of Ranicki Duality
Creators: name: Connolly, Frank
Publisher: name: arXiv
Year: 2022
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57R67 (primary), 19J25 (secondary)

description: Our main theorem provides an $(R,K)$ chain isomorphism: $ TΔ^*X\cong C(X_K) $. Here $T$ is the Ranicki Duality functor; $Δ^*X$ is the simplicial cochain complex of the simplicial complex $X$, with control map $π:X \to K$ and $C(X_K) $ is the cellular chain complex of a CW complex $X_K$.
description: 14 pages
Additional file 3 of A transcriptomic map of EGFR-induced epithelial-to-mesenchymal transition identifies prognostic and therapeutic targets for head and neck cancer
Creators: name: Schinke, Henrik
name: Shi, Enxian
name: Lin, Zhongyang
name: Quadt, Tanja
name: Kranz, Gisela
name: Zhou, Jiefu
name: Wang, Hongxia
name: Hess, Julia
name: Heuer, Steffen
name: Belka, Claus
name: Zitzelsberger, Horst
name: Schumacher, Udo
name: Genduso, Sandra
name: Riecken, Kristoffer
name: Gao, Yujing
name: Wu, Zhengquan
name: Reichel, Christoph A.
name: Walz, Christoph
name: Canis, Martin
name: Unger, Kristian
name: Baumeister, Philipp
name: Pan, Min
name: Gires, Olivier
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Plant Biology

description: Additional file 3: Supplementary Table 2. TCGA HPV- HNSC cohort.
Application of B-splines to determining eigen-spectrum of Feshbach molecules
Creators: name: Derevianko, A.
name: Luc-Koenig, E.
name: Masnou-Seeuws, F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The B-spline basis set method is applied to determining the rovibrational eigen-spectrum of diatomic molecules. A particular attention is paid to a challenging numerical task of an accurate and efficient description of the vibrational levels near the dissociation limit (halo-state and Feshbach molecules). Advantages of using B-splines are highlighted by comparing the performance of the method with that of the commonly-used discrete variable representation (DVR) approach. Several model cases, including the Morse potential and realistic potentials with 1/R^3 and 1/R^6 long-range dependence of the internuclear separation are studied. We find that the B-spline method is superior to the DVR approach and it is robust enough to properly describe the Feshbach molecules. The developed numerical method is applied to studying the universal relation of the energy of the last bound state to the scattering length. We numerically illustrate the validity of the quantum-defect-theoretic formulation of such a relation for a 1/R^6 potential.
description: submitted to can j phys: Walter Johnson symposum
DIISC-I: The Discovery of Kinematically Anomalous HI Clouds in M 100
Creators: name: Gim, Hansung B.
name: Borthakur, Sanchayeeta
name: Momjian, Emmanuel
name: Padave, Mansi
name: Jansen, Rolf A.
name: Nelson, Dylan
name: Heckman, Timothy M.
name: Kennicutt, Robert C.
name: Fox, Andrew J.
name: Pineda, Jorge L.
name: Thilker, David
name: Kauffmann, Guinevere
name: Tumlinson, Jason
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the discovery of two kinematically anomalous atomic hydrogen (HI) clouds in M 100 (NGC 4321), which was observed as part of the Deciphering the Interplay between the Interstellar medium, Stars, and the Circumgalactic medium (DIISC) survey in HI 21 cm at 3.3 km s$^{-1}$ spectroscopic and 44 arcsec$\times$30 arcsec spatial resolution using the Karl G. Jansky Very Large Array. These clouds were identified as structures that show significant kinematic offsets from the rotating disk of M100. The velocity offsets of 40 km s$^{-1}$ observed in these clouds are comparable to the offsets seen in intermediate-velocity clouds (IVCs) in the circumgalactic medium (CGM) of the Milky Way and nearby galaxies. We find that one anomalous cloud in M 100 is associated with star-forming regions detected in H$α$ and far-ultraviolet imaging. Our investigation shows that anomalous clouds in M 100 may originate from multiple mechanisms, such as star formation feedback-driven outflows, ram-pressure stripping, and tidal interactions with satellite galaxies. Moreover, we do not detect any cool CGM at 38.8 kpc from the center of M 100, giving an upper limit of N(HI) $\le$ $1.7\times10^{13}$ cm$^{-2}$ (3$σ$). Since M 100 is in the Virgo cluster, the non-existence of neutral/cool CGM is a likely pathway for turning it into a red galaxy.
description: 19 pages, 3 tables, 7 figures, Accepted for publication at ApJ
Re-examining Larson's Scaling Relationships in Galactic Molecular Clouds
Creators: name: Heyer, Mark
name: Krawczyk, Coleman
name: Duval, Julia
name: Jackson, James M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The properties of Galactic molecular clouds tabulated by Solomon etal (1987) (SRBY) are re-examined using the Boston University-FCRAO Galactic Ring Survey of 13CO J=1-0 emission. These new data provide a lower opacity tracer of molecular clouds and improved angular and spectral resolution than previous surveys of molecular line emission along the Galactic Plane. We calculate GMC masses within the SRBY cloud boundaries assuming LTE conditions throughout the cloud and a constant H2 to 13CO abundance, while accounting for the variation of the 12C/13C with Galacto-centric radius. The LTE derived masses are typically five times smaller than the SRBY virial masses. The corresponding median mass surface density of molecular hydrogen for this sample is 42 Msun/pc^2, which is significantly lower than the value derived by SRBY (median 206 Msun/pc^2) that has been widely adopted by most models of cloud evolution and star formation. This discrepancy arises from both the extrapolation by SRBY of velocity dispersion, size, and CO luminosity to the 1K antenna temperature isophote that likely overestimates the GMC masses and our assumption of constant 13CO abundance over the projected area of each cloud. Owing to the uncertainty of molecular abundances in the envelopes of clouds, the mass surface density of giant molecular clouds could be larger than the values derived from our 13CO measurements. From velocity dispersions derived from the 13CO data, we find that the coefficient of the cloud structure functions, vo=sigma_v/R^{1/2}, is not constant, as required to satisfy Larson's scaling relationships, but rather systematically varies with the surface density of the cloud as Sigma^{0.5} as expected for clouds in self-gravitational equlibrium.
description: Accepted by ApJ. Newest version includes modifications from the referee
A new approach to the mean-field limit of Vlasov-Fokker-Planck equations
Creators: name: Bresch, Didier
name: Jabin, Pierre-Emmanuel
name: Soler, Juan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: This article introduces a novel approach to the mean-field limit of stochastic systems of interacting particles, leading to the first ever derivation of the mean-field limit to the Vlasov-Poisson-Fokker-Planck system for plasmas in dimension~$2$ together with a partial result in dimension~$3$. The method is broadly compatible with second order systems that lead to kinetic equations and it relies on novel estimates on the BBGKY hierarchy. By taking advantage of the diffusion in velocity, those estimates bound weighted $L^p$ norms of the marginals or observables of the system, uniformly in the number of particles. This allows to qualitatively derive the mean-field limit for very singular interaction kernels between the particles, including repulsive Poisson interactions, together with quantitative estimates for a general kernel in $L^2$.
Generic Level Polymorphic N-ary Functions
Creators: name: Allais, Guillaume
Publisher: name: arXiv
Year: 2021
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: Agda's standard library struggles in various places with n-ary functions and relations. It introduces congruence and substitution operators for functions of arities one and two, and provides users with convenient combinators for manipulating indexed families of arity exactly one. After a careful analysis of the kinds of problems the unifier can easily solve, we design a unifier-friendly representation of n-ary functions. This allows us to write generic programs acting on n-ary functions which automatically reconstruct the representation of their inputs' types by unification. In particular, we can define fully level polymorphic n-ary versions of congruence, substitution and the combinators for indexed families, all requiring minimal user input.
description: Draft of the Tyde19 paper
Large time behavior of solutions to the Cauchy problem for the BBM-Burgers equation
Creators: name: Fukuda, Ikki
name: Ikeda, Masahiro
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35B40, 35Q53

description: We consider the large time behavior of the solutions to the Cauchy problem for the BBM-Burgers equation. We prove that the solution to this problem goes to the self-similar solution to the Burgers equation called the nonlinear diffusion wave. Moreover, we construct the appropriate second asymptotic profiles of the solutions depending on the initial data. Based on that discussion, we investigate the effect of the initial data on the large time behavior of the solution, and derive the optimal asymptotic rate to the nonlinear diffusion wave. Especially, the important point of this study is that the second asymptotic profiles of the solutions with slowly decaying data, whose case has not been studied, are obtained.
description: 28 pages
Berry phase and quantum criticality in Yang--Baxter systems
Creators: name: Chen, Jing-Ling
name: Xue, Kang
name: Ge, Mo-Lin
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Spin interaction Hamiltonians are obtained from the unitary Yang--Baxter $\breve{R}$-matrix. Based on which, we study Berry phase and quantum criticality in the Yang--Baxter systems.
description: 7 pages, no figures. Accepted for publication in Annals of Physics
A new finite element paradigm to solve contact problems with roughness
Creators: name: Bonari, Jacopo
name: Paggi, Marco
name: Dini, Daniele
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: This article's main scope is the presentation of a computational method for the simulation of contact problems within the finite element method involving complex and rough surfaces. The approach relies on the MPJR (eMbedded Profile for Joint Roughness) interface finite element proposed in [arXiv:1805.07207], which is nominally flat but can embed at the nodal level any arbitrary height to reconstruct the displacement field due to contact in the presence of roughness. Here, the formulation is generalized to handle 3D surface height fields and any arbitrary nonlinear interface constitutive relation, including friction and adhesion. The methodology is herein validated with BEM solutions for linear elastic contact problems. Then, a selection of nonlinear contact problems prohibitive to be simulated by BEM and by standard contact algorithms in FEM are detailed, to highlight the promising aspects of the proposed method for tribology.
The family signature theorem
Creators: name: Randal-Williams, Oscar
Publisher: name: arXiv
Year: 2022
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 19G24, 19G38, 55R10, 57R19, 57R20

description: We discuss several versions of the Family Signature Theorem: in rational cohomology using ideas of Meyer, in $KO[\tfrac{1}{2}]$-theory using ideas of Sullivan, and finally in symmetric $L$-theory using ideas of Ranicki. Employing recent developments in Grothendieck--Witt theory, we give a quite complete analysis of the resulting invariants. As an application we prove that the signature is multiplicative modulo 4 for fibrations of oriented Poincaré complexes, generalising a result of Hambleton, Korzeniewski and Ranicki, and discuss the multiplicativity of the de Rham invariant.
description: 34 pages; v2 36 pages, accepted version to appear in Proceedings of the Royal Society of Edinburgh Section A: Mathematics (Ranicki memorial volume)
Solving the Imaging Problem with Coherently Integrated Multiwavelength Data
Creators: name: Schmitt, H. R.
name: Pauls, T. A.
name: Armstrong, J. T.
name: Mozurkewich, D.
name: Jorgensen, A. M.
name: Hindsley, R. B.
name: Tycner, C.
name: Zavala, R. T.
name: Benson, J. A.
name: Hutter, D. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recovering images from optical interferometric observations is one of the major challenges in the field. Unlike the case of observations at radio wavelengths, in the optical the atmospheric turbulence changes the phases on a very short time scale, which results in corrupted phase measurements. In order to overcome these limitations, several groups developed image reconstruction techniques based only on squared visibility and closure phase information, which are unaffected by atmospheric turbulence. We present the results of two techniques used by our group, which employed coherently integrated data from the Navy Prototype Optical Interferometer. Based on these techniques we were able to recover complex visibilities for several sources and image them using standard radio imaging software. We describe these techniques, the corrections applied to the data, present the images of a few sources, and discuss the implications of these results.
description: 8 pages, 2008 SPIE Astronomical Telescopes and Instrumentation, Eds. M. Schoeller, W. C. Danchi, F. Delplancke
Detecting OODs as datapoints with High Uncertainty
Creators: name: Kaur, Ramneet
name: Jha, Susmit
name: Roy, Anirban
name: Park, Sangdon
name: Sokolsky, Oleg
name: Lee, Insup
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Deep neural networks (DNNs) are known to produce incorrect predictions with very high confidence on out-of-distribution inputs (OODs). This limitation is one of the key challenges in the adoption of DNNs in high-assurance systems such as autonomous driving, air traffic management, and medical diagnosis. This challenge has received significant attention recently, and several techniques have been developed to detect inputs where the model's prediction cannot be trusted. These techniques detect OODs as datapoints with either high epistemic uncertainty or high aleatoric uncertainty. We demonstrate the difference in the detection ability of these techniques and propose an ensemble approach for detection of OODs as datapoints with high uncertainty (epistemic or aleatoric). We perform experiments on vision datasets with multiple DNN architectures, achieving state-of-the-art results in most cases.
description: arXiv admin note: text overlap with arXiv:2103.12628
Resolving gas bubbles ascending in liquid metal from low-SNR neutron radiography images
Creators: name: Birjukovs, Mihails
name: Trtik, Pavel
name: Kaestner, Anders
name: Hovind, Jan
name: Klevs, Martins
name: Gawryluk, Dariusz Jakub
name: Thomsen, Knud
name: Jakovics, Andris
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We demonstrate a new image processing methodology for resolving gas bubbles travelling through liquid metal from dynamic neutron radiography images with intrinsically low signal-to-noise ratio. Image pre-processing, denoising and bubble segmentation are described in detail, with practical recommendations. Experimental validation is presented - stationary and moving reference bodies with neutron-transparent cavities are radiographed with imaging conditions similar to the cases with bubbles in liquid metal. The new methods are applied to our experimental data from previous and recent imaging campaigns, and the performance of the methods proposed in this paper is compared against our previously developed methods. Significant improvements are observed as well as the capacity to reliably extract physically meaningful information from measurements performed under highly adverse imaging conditions. The showcased image processing solution and separate elements thereof are readily extendable beyond the present application, and have been made open-source.
Epsilon-regularity for the Brakke flow with boundary
Creators: name: Gasparetto, Carlo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53E10 (Primary) 35D40, 35B65 (Secondary)

description: We prove that, if a Brakke flow with boundary is close enough to a stationary half-plane with density one, then it is $C^{1,α}$. Our approach is based on viscosity techniques introduced by Savin in the context of elliptic equations. The same techniques can be used to give a proof of Brakke's (interior) regularity theorem which is alternative to the original one.
description: The constancy theorem was removed. Final version to appear in Analysis & PDE
Linking the Sun to the Heliosphere Using Composition Data and Modelling. A Test Case with a Coronal Jet
Creators: name: Parenti, Susanna
name: Chifu, Iulia
name: Del Zanna, Giulio
name: Edmondson, Justin
name: Giunta, Alessandra
name: Hansteen, Viggo H.
name: Higginson, Aleida
name: Laming, J. Martin
name: Lepri, Susan T.
name: Lynch, Benjamin J.
name: Rivera, Yeimy J.
name: von Steiger, Rudolf
name: Wiegelmann, Thomas
name: Wimmer-Schweingruber, Robert F.
name: Prado, Natalia Zambrana
name: Pelouze, Gabriel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Our understanding of the formation and evolution of the corona and the heliosphere is linked to our capability of properly interpreting the data from remote sensing and in-situ observations. In this respect, being able to correctly connect in-situ observations with their source regions on the Sun is the key for solving this problem. In this work we aim at testing a diagnostics method for this connectivity. This paper makes use of a coronal jet observed on 2010 August 2nd in active region 11092 as a test for our connectivity method. This combines solar EUV and in-situ data together with magnetic field extrapolation, large scale MHD modeling and FIP (First Ionization Potential) bias modeling to provide a global picture from the source region of the jet to its possible signatures at 1AU. Our data analysis reveals the presence of outflow areas near the jet which are within open magnetic flux regions and which present FIP bias consistent with the FIP model results. In our picture, one of these open areas is the candidate jet source. Using a back-mapping technique we identified the arrival time of this solar plasma at the ACE spacecraft. The in-situ data show signatures of changes in the plasma and magnetic field parameters, with FIP bias consistent with the possible passage of the jet material. Our results highlight the importance of remote sensing and in-situ coordinated observations as a key to solve the connectivity problem. We discuss our results in view of the recent Solar Orbiter launch which is currently providing such unique data.
description: 53 pages, 15 figures, 5 tables, accepted for publication in Space Science Reviews
Instability of wormholes supported by a ghost scalar field. II. Nonlinear evolution
Creators: name: Gonzalez, J. A.
name: Guzman, F. S.
name: Sarbach, O.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We analyze the nonlinear evolution of spherically symmetric wormhole solutions coupled to a massless ghost scalar field using numerical methods. In a previous article we have shown that static wormholes with these properties are unstable with respect to linear perturbations. Here we show that depending on the initial perturbation the wormholes either expand or decay to a Schwarzschild black hole. We estimate the time scale of the expanding solutions and the ones collapsing to a black hole and show that they are consistent in the regime of small perturbations with those predicted from perturbation theory. In the collapsing case, we also present a systematic study of the final black hole horizon and discuss the possibility for a luminous signal to travel from one universe to the other and back before the black hole forms. In the expanding case, the wormholes seem to undergo an exponential expansion, at least during the run time of our simulations.
description: 16 pages, 15 figures, minor modifications, to appear in Classical and Quantum Gravity