cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Population Quasi-Monte Carlo
Creators: name: Huang, Chaofan
name: Joseph, V. Roshan
name: Mak, Simon
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: Computation (stat.CO)
subject: FOS: Computer and information sciences

description: Monte Carlo methods are widely used for approximating complicated, multidimensional integrals for Bayesian inference. Population Monte Carlo (PMC) is an important class of Monte Carlo methods, which utilizes a population of proposals to generate weighted samples that approximate the target distribution. The generic PMC framework iterates over three steps: samples are simulated from a set of proposals, weights are assigned to such samples to correct for mismatch between the proposal and target distributions, and the proposals are then adapted via resampling from the weighted samples. When the target distribution is expensive to evaluate, the PMC has its computational limitation since the convergence rate is $\mathcal{O}(N^{-1/2})$. To address this, we propose in this paper a new Population Quasi-Monte Carlo (PQMC) framework, which integrates Quasi-Monte Carlo ideas within the sampling and adaptation steps of PMC. A key novelty in PQMC is the idea of importance support points resampling, a deterministic method for finding an "optimal" subsample from the weighted proposal samples. Moreover, within the PQMC framework, we develop an efficient covariance adaptation strategy for multivariate normal proposals. Lastly, a new set of correction weights is introduced for the weighted PMC estimator to improve the efficiency from the standard PMC estimator. We demonstrate the improved empirical convergence of PQMC over PMC in extensive numerical simulations and a friction drilling application.
description: Submitted to Journal of Computational and Graphical Statistics
Detecting Topological Order with Ribbon Operators
Creators: name: Bridgeman, Jacob C.
name: Flammia, Steven T.
name: Poulin, David
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce a numerical method for identifying topological order in two-dimensional models based on one-dimensional bulk operators. The idea is to identify approximate symmetries supported on thin strips through the bulk that behave as string operators associated to an anyon model. We can express these ribbon operators in matrix product form and define a cost function that allows us to efficiently optimize over this ansatz class. We test this method on spin models with abelian topological order by finding ribbon operators for $\mathbb{Z}_d$ quantum double models with local fields and Ising-like terms. In addition, we identify ribbons in the abelian phase of Kitaev's honeycomb model which serve as the logical operators of the encoded qubit for the quantum error-correcting code. We further identify the topologically encoded qubit in the quantum compass model, and show that despite this qubit, the model does not support topological order. Finally, we discuss how the method supports generalizations for detecting nonabelian topological order.
description: 15 pages, 8 figures, comments welcome
Compact complex non-K{ä}hler manifolds associated with totally real reciprocal units
Creators: name: Miebach, Christian
name: Oeljeklaus, Karl
Publisher: name: arXiv
Year: 2021
Subjects: subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: Using the theory of totally real number fields we construct a new class of compact complex non-K{ä}hler manifolds in every even complex dimension and study their analytic and geometric properties.
description: 12 pages; published online in Mathematische Zeitschrift, 2022
A generalized traction integral equation for Stokes flow, with applications to near-wall particle mobility and viscous erosion
Creators: name: Mitchell, William H.
name: Spagnolie, Saverio E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Computational Physics (physics.comp-ph)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: A double-layer integral equation for the surface tractions on a body moving in a viscous fluid is derived which allows for the incorporation of a background flow and/or the presence of a plane wall. The Lorentz reciprocal theorem is used to link the surface tractions on the body to integrals involving the background velocity and stress fields on an imaginary bounding sphere (or hemisphere for wall-bounded flows). The derivation requires the velocity and stress fields associated with numerous fundamental singularity solutions which we provide for free-space and wall-bounded domains. Two sample applications of the method are discussed: we study the tractions on an ellipsoid moving near a plane wall, which provides a more detailed understanding of the well-studied glancing and reversing trajectories in the context of particle sedimentation, and the erosion of bodies by a viscous flow, in which the surface is ablated at a rate proportional to the local viscous shear stress. Simulations and analytical estimates suggest that a spherical body in a uniform flow first reduces nearly but not exactly to the drag minimizing profile and then vanishes in finite time. The shape dynamics of an eroding body in a shear flow and near a wall are also investigated. Stagnation points on the body surface lead generically to the formation of cusps, whose number depends on the flow configuration and/or the presence of nearby boundaries.
Deformations of $\mathrm{G}_2$-instantons on nearly $\mathrm{G}_2$ manifolds
Creators: name: Singhal, Ragini
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We study the deformation theory of $\mathrm{G}_2$-instantons on nearly $\mathrm{G}_2$ manifolds. There is a one-to-one correspondence between nearly parallel $\mathrm{G}_2$ structures and real Killing spinors, thus the deformation theory can be formulated in terms of spinors and Dirac operators. We prove that the space of infinitesimal deformations of an instanton is isomorphic to the kernel of an elliptic operator. Using this formulation we prove that abelian instantons are rigid. Then we apply our results to describe the deformation space of the canonical connection on the four normal homogeneous nearly $\mathrm{G}_2$ manifolds.
description: Updated some integrability results for the infinitesimal deformations found. All comments are welcome
Οι τελευταίες επιστολές του Σαντόρε ντι Σανταρόζα από το έργο Memorie e lettere inedite του Nicomede Bianchi. Μια απόπειρα συλλογικής σχολιασμένης μετάφρασης και τεκμηρίωσης
Creators: name: Zografidou, Zosi
name: Spyridonidis, Ilias
name: Dimkou, Anna
name: Barbouti, Chrysa
name: Theodoridi, Georgia
name: Chrysikou, Eirini
name: Christodoulaki, Maria
Publisher: name: iNTERCULTURAL tRANSLATION iNTERSEMIOTIC
Year: 2023
Subjects: σχολιασμένη μετάφραση; τεκμηρίωση; Επανάσταση του 1821; Σαντόρε ντι Σανταρόζα; annotated translation; documentation; Greek Revolution of 1821; Santorre di Santarosa

description: Με αφορμή τα διακόσια χρόνια από την έναρξη της Επανάστασης του 1821 δημιουργήθηκε μια ομάδα συλλογικής μετάφρασης στο πλαίσιο του μαθήματος «Μετάφραση Γενικών Κειμένων από Ιταλικά στα Ελληνικά» του Διατμηματικού Προγράμματος Μεταπτυχιακών Σπουδών «Μετάφραση και Διερμηνεία» του Αριστοτελείου Πανεπιστημίου Θεσσαλονίκης και διδάσκοντες την Καθηγήτρια Ιστορίας και Μετάφρασης Ιταλικής Λογοτεχνίας Ζώζη Ζωγραφίδου και τον Δρ. Μεταφρασεολογίας Ηλία Σπυριδωνίδη, με στόχο τη μελέτη, τη σχολιασμένη μετάφραση και την τεκμηρίωση ενός αμετάφραστου ιταλικού κειμένου σχετικά με την Επανάσταση. Για το σκοπό αυτό, παρουσιάζονται στο πλαίσιο της παρούσας εργασίας, ως μια απόπειρα συλλογικής σχολιασμένης μετάφρασης και τεκμηρίωσης, μερικά αποσπάσματα από αμετάφραστες επιστολές του Ιταλού φιλέλληνα Σαντόρε ντι Σανταρόζα συνοδευόμενες από σχόλια του Nicomede Bianchi που περιλαμβάνονται στο έργο του Memorie e lettere inedite. On the occasion of the two hundredth anniversary of the Revolution of 1821, a collective translation group was created in the frame of the course "Translation of General Texts from Italian to Greek" of the Joint Postgraduate Studies Programme (J.P.P.S.) «Conference Interpreting and Translation» of Aristotle University of Thessaloniki taught by Professor of History and Translation of Italian Literature Zozi Zografidou and Dr. of Translation Studies Ilias Spyridonidis with the aim to study, to annotate and document a translation of an Italian text related to the Greek Revolution which has not been translated before into Greek. For this purpose, some fragments of untranslated letters of the Italian philhellene Santorre di Santarosa accompanied by Nicomede’s Bianchi comments included in the work Memorie e lettere inedite are presented in the context of this study, as an attempt of a collective annotated translation and documentation.
description: iNTERCULTURAL tRANSLATION iNTERSEMIOTIC, Vol 12, No 1 (2023)
Homeostatic regulation of energetic arousal during acute social isolation-evidence from the lab and the field
Creators: name: Stijovic, Ana
name: Forbes, Paul
name: Tomova, Livia
name: Skoluda, Nadine
name: Feneberg, Anja
name: Piperno, Giulio
name: Pronizius, Ekaterina
name: Nater, Urs
name: Lamm, Claus
name: Silani, Giorgia
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Medicine and Health Sciences
subject: Life Sciences
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: Open analysis code and analysis outputs for the manuscript Stijovic et al. (2023), Homeostatic regulation of energetic arousal during acute social isolation - evidence from the lab and the field
Leading birds by their beaks: the response of flocks to external perturbations
Creators: name: Kyriakopoulos, Nikos
name: Ginelli, Francesco
name: Toner, John
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the asymptotic response of polar ordered active fluids ("flocks") to small external aligning fields $h$. The longitudinal susceptibility $χ_{_\parallel}$ diverges, in the thermodynamic limit, like $h^{-ν}$ as $h \rightarrow 0$. In finite systems of linear size $L$, $χ_{_\parallel}$ saturates to a value $\sim L^γ$. The universal exponents $ν$ and $γ$ depend only on the spatial dimensionality $d$, and are related to the dynamical exponent $z$ and the "roughness exponent" $α$ characterizing the unperturbed flock dynamics. Using a well supported conjecture for the values of these two exponents, we obtain $ν= 2/3$, $γ= 4/5$ in $d = 2$ and $ν= 1/4$, $γ= 2/5$ in $d = 3$. These values are confirmed by our simulations.
description: 20 pages, 3 figures, accepted for publication in New Journal of Physics
Results of Air Revitalization System study by adsorbent
Creators: name:  CEDRIC DUPONT
name:   ROMAIN CHAUVEAU
name:   PASCAL BARBIER
name:   ALEXIS PAILLET
name:   GREGORY NAVARRO
Publisher: name: Proceedings of the Aerospace Europe Conference - EUCASS - CEAS - 2023
Year: 2023
Subjects: AIR REVITALISATION
PURIFICATION
CO2

description: major concern to reduce power consumption of this process. Air drying can be achieved by Temperature and Vacuum Swing Adsorption. On fast cycles, the use of structured adsorbents5 could be a way to significantly improve the efficiency and the compactness of adsorbers. In this paper, structured adsorbents with a very small characteristic length are densely packed in an adsorber. In the frame of a CNES contract to assess performances of this technology for trapping water, lab tests are dealt to evaluate the drying power of this tailor made desiccant. The obtained performances are compared with the ones produced with classical drying solution based on beads desiccant. A substantial gain in terms of yield and compactness is to be underlined, showing the interest to improve adsorption kinetics working on thinner adsorbents with a good mechanical resistance to attrition. In addition, future perspectives for life support systems will be presented especially with the capability to trap carbon dioxide as well as water.
Ripening Kinetics of Bubbles: A Molecular Dynamics Study
Creators: name: Watanabe, Hiroshi
name: Inaoka, Hajime
name: Ito, Nobuyasu
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The ripening kinetics of bubbles is studied by performing molecular dynamics simulations. From the time evolution of a system, the growth rates of individual bubbles are determined. At low temperatures, the system exhibits a $t^{1/2}$ law and the growth rate is well described by classical Lifshitz-Slyozov-Wagner (LSW) theory for the reaction-limited case. This is direct evidence that the bubble coarsening at low temperatures is reaction-limited. At high temperatures, although the system exhibits a $t^{1/3}$ law, which suggests that it is diffusion-limited, the accuracy of the growth rate is insufficient to determine whether the form is consistent with the prediction of LSW theory for the diffusion-limited case. The gas volume fraction dependence of the coarsening behavior is also studied. Although the behavior of the system at low temperatures has little sensitivity to the gas volume fraction up to 10%, that at high temperatures deviates from the prediction of LSW theory for the diffusion-limited case as the gas volume fraction increases. These results show that the mean-field-like treatment is valid for a reaction-limited system even with a finite volume fraction, while it becomes inappropriate for a diffusion-limited system since classical LSW theory for the diffusion-limited case is valid at the dilute limit.
description: 18 pages, 7 figures. Revised introduction
Area-minimizing Cones over Grassmannian Manifolds
Creators: name: Jiao, Xiaoxiang
name: Cui, Hongbin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 49Q05, 53C38, 53C40

description: It is a well-known fact that there exists a standard minimal embedding map for the Grassmannians of $n$-planes $G(n,m;\mathbb{F})(\mathbb{F}=\mathbb{R},\mathbb{C},\mathbb{H})$ and Cayley plane $\mathbb{O}P^2$ into Euclidean spheres, then an natural question is that if the cones over these embedded Grassmannians are area-minimizing? In this paper, detailed descriptions for this embedding map are given from the point view of Hermitian orthogonal projectors which can be seen as an direct generalization of Gary R. Lawlor's(\cite{lawlor1991sufficient}) original considerations for the case of real projective spaces, then we re-prove the area-minimization of those cones which was gradually obtained in \cite{kerckhove1994isolated}, \cite{kanno2002area} and \cite{ohno2015area} from the perspectives of isolated orbits of adjoint actions or canonical embedding of symmetric $R$-spaces, all based on the method of Gary R. Lawlor's Curvature Criterion. Additionally, area-minimizing cones over almost all common Grassmannians has been given by Takahiro Kanno, except those cones over oriented real Grassmannians $\widetilde{G}(n,m;\mathbb{R})$ which are not Grassmannians of oriented $2$-planes. The second part of this paper is devoted to complement this result, a natural and key observation is that the oriented real Grassmannians can be considered as unit simple vectors in the exterior vector spaces, we prove that all their cones are area-minimizing except $\widetilde{G}(2,4;\mathbb{R})$.
description: We add a detailed description for the known minimizing cones over Grassmannians from the point view of isolated orbits of adjoint actions,or R-spaces, and some other beautiful minimization results associated to Grassmannians
Cellular automaton for chimera states
Creators: name: García-Morales, Vladimir
Publisher: name: arXiv
Year: 2016
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Chaotic Dynamics (nlin.CD)
subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: FOS: Physical sciences

description: A minimalistic model for chimera states is presented. The model is a cellular automaton (CA) which depends on only one adjustable parameter, the range of the nonlocal coupling, and is built from elementary cellular automata and the majority (voting) rule. This suggests the universality of chimera-like behavior from a new point of view: Already simple CA rules based on the majority rule exhibit this behavior. After a short transient, we find chimera states for arbitrary initial conditions, the system spontaneously splitting into stable domains separated by static boundaries, ones synchronously oscillating and the others incoherent. When the coupling range is local, nontrivial coherent structures with different periodicities are formed.
description: 6 pages, two columns, four figures. Minor corrections introduced. Accepted to Europhys. Lett
Catalog-free modeling of galaxy types in deep images: Massive dimensional reduction with neural networks
Creators: name: Livet, Florian
name: Charnock, Tom
name: Borgne, Damien Le
name: de Lapparent, Valérie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Current models of galaxy evolution are constrained by the analysis of catalogs containing the flux and size of galaxies extracted from multiband deep fields carrying inevitable observational and extraction-related biases which can be highly correlated. In practice, taking all of these effects simultaneously into account is difficult, and derived models are inevitably biased. To address this issue, we use robust likelihood-free methods for the inference of luminosity function parameters, made possible via massive compression of multiband images using artificial neural networks. This technique makes the use of catalogs unnecessary when comparing observed and simulated multiband deep fields and constraining model parameters. A forward modeling approach generates galaxies of multiple types depending on luminosity function parameters and paints them on photometric multiband deep fields including both the instrumental and observational characteristics. The simulated and the observed images present the same selection effects and can therefore be properly compared. We train a fully-convolutional neural network to extract the most model-parameter-sensitive summary statistics out of these realistic simulations, shrinking down the dimensionality of the summary space. Finally, using the trained network to compress both observed and simulated deep fields, the model parameter values are constrained through Population Monte Carlo likelihood-free inference. Using synthetic photometric multiband deep fields similar to the CFHTLS and D1/D2 deep fields and massively compressing them through the convolutional neural network, we demonstrate the robustness, accuracy and consistency of this new catalog-free inference method. We are able to constrain the parameters of luminosity functions of different types of galaxies and our results are fully compatible with the classic catalog extraction approaches.
description: 23 pages, 20 figures
Baldermann, I. (Hrsg.) ... : Jahrbuch für Biblische Theologie
Creators: name: Schnabel, Eckhard J.
Publisher: name: Jahrbuch für evangelikale Theologie
Year: 2025

description: 1822549884
description: Jahrbuch für evangelikale Theologie, V. 4 (1990): Jahrbuch für evangelikale Theologie, Band 4
Graph-based Collaborative Ranking
Creators: name: Shams, Bita
name: Haratizadeh, Saman
Publisher: name: arXiv
Year: 2016
Subjects: subject: Social and Information Networks (cs.SI)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Data sparsity, that is a common problem in neighbor-based collaborative filtering domain, usually complicates the process of item recommendation. This problem is more serious in collaborative ranking domain, in which calculating the users similarities and recommending items are based on ranking data. Some graph-based approaches have been proposed to address the data sparsity problem, but they suffer from two flaws. First, they fail to correctly model the users priorities, and second, they cannot be used when the only available data is a set of ranking instead of rating values. In this paper, we propose a novel graph-based approach, called GRank, that is designed for collaborative ranking domain. GRank can correctly model users priorities in a new tripartite graph structure, and analyze it to directly infer a recommendation list. The experimental results show a significant improvement in recommendation quality compared to the state of the art graph-based recommendation algorithms and other collaborative ranking techniques.
Magnetic nanodrug delivery in non-Newtonian blood flows
Creators: name: Fanelli, C.
name: Kaouri, K.
name: Phillips, T. N.
name: Myers, T. G.
name: Font, F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: With the goal of determining strategies to maximise drug delivery to a specific site in the body, we developed a mathematical model for the transport of drug nanocarriers (nanoparticles) in the bloodstream under the influence of an external magnetic field. Under the assumption of long (compared to the radius) blood vessels the Navier-Stokes equations are reduced, to a simpler model consistently with lubrication theory. Under these assumptions, analytical results are compared for Newtonian, power-law, Carreau and Ellis fluids, and these clearly demonstrate the importance of shear thinning effects when modelling blood flow. Incorporating nanoparticles and a magnetic field to the model we develop a numerical scheme and study the particle motion for different field strengths. We demonstrate the importance of the non-Newtonian behaviour: for the flow regimes investigated in this work, consistent with those in blood micro vessels, we find that the field strength needed to absorb a certain amount of particles in a non-Newtonian fluid has to be larger than the one needed in a Newtonian fluid. Specifically, for one case examined, a two times larger magnetic force had to be applied in the Ellis fluid than in the Newtonian fluid for the same number of particles to be absorbed through the vessel wall. Consequently, models based on a Newtonian fluid can drastically overestimate the effect of a magnetic field. Finally, we evaluate the particle concentration at the vessel wall and compute the evolution of the particle flux through the wall for different permeability values, as that is important when assessing the efficacy of drug delivery applications. The insights from our work bring us a step closer to successfully transferring magnetic nanoparticle drug delivery to the clinic.
Zeros of Green Functions in Topological Insulators
Creators: name: Misawa, Takahiro
name: Yamaji, Youhei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: This study demonstrates that the zeros of the diagonal components of Green functions are key quantities that can detect non-interacting topological insulators. We show that zeros of the Green functions traverse the band gap in the topological phases. The traverses induce the crosses of zeros, and the zeros' surface in the band gap, analogous to the Fermi surface of metals. By calculating the zeros of the microscopic models, we show the traverses of the zeros universally appear in all six classes of conventional non-interacting topological insulators. By utilizing the eigenvector-eigenvalue identity, which is a recently rediscovered relation in linear algebra, we prove that the traverses of the zeros in the bulk Green functions are guaranteed by the band inversions, which occur in the topological phases. The relevance of the zeros to detecting the exotic topological insulators such as the higher-order topological insulators is also discussed. For the Hamiltonians with the nearest-neighbor hoppings, we also show that the gapless edge state guarantees the zeros' surfaces in the band gap. The analysis demonstrates that the zeros can be used to detect a wide range of topological insulators and thus useful for searching new topological materials.
description: 21 pages, 1 table, 14 figures
Wine - Physicochemical analysis and E coli
Creators: name: Arokiaraj, Mark Christopher
Publisher: name: Zenodo
Year: 2024
Subjects: Wine
Physicochemical properties
ADME
Drug target
Quercetin

description: Wine has been known for its beneficial aspects since ancient years. Cardiovascular benefits are known, but the exact mechanism has yet to be deciphered. The multifarious benefits warrant a deeper level of analysis. The study was performed for the possible understanding of the mechanisms of wine’s benefits. The known components of wine were taken, and it was analysed for the resultant molecule after interaction with the original ingredients using IBM RXN. The resultant forward prediction molecule was tested for pharmacokinetic properties. Thereafter, the possible drug target was analysed using PLATO prediction. The results show a prominent interaction with Escherichia coli adhesion fimbriae protein. When the components of bread was added (amylopectin and maltose) to the equation of the components of wine, the result simplifies to quercetin by IBM RXN, though the confidence is low.  By PLATO prediction, quercetin has a reliable targets on Escherichia coli. This shows a possible benefit in the treatment and prevention of Escherichia coli infections, which is the commonest organism in urinary tract infections. The results are theoretical and preliminary, and they need to be evaluated in real-time retrospective patient models. There are possibilities for therapeutic doses of wine in prevention and treatment of complicated urinary tract infections.
The effect of momentum deposition during fireball evolution on flow anisotropy
Creators: name: Schulc, Martin
name: Tomasik, Boris
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The highest LHC energies give rise to production of many pairs of hard partons which deposit four-momentum into the expanding fireball matter. We argue that it is necessary to include momentum deposition during fireball evolution into 3+1 dimensional hydrodynamic simulations of the collision. This influence cannot be accounted for simply by modifying initial conditions of the simulation. The resulting contribution to flow anisotropy is correlated with the fireball geometry and causes an increase of the elliptic flow in non-central collisions. The results are presented for various scenarios with energy and momentum deposition to clearly demonstrate this effect.
description: 8 pages, 3 figures
Wine - physicochemical analysis and E coli
Creators: name: Arokiaraj, Mark Christopher
Publisher: name: Zenodo
Year: 2024
Subjects: Wine
Physicochemical properties
ADME
Drug target

description: Wine has been known for its beneficial aspects since ancient years. Cardiovascular benefits are known, but the exact mechanism has yet to be deciphered. The multifarious benefits warrant a deeper level of analysis. The study was performed for the possible understanding of the mechanisms of wine’s benefits. The known components of wine were taken, and it was analyzed for the resultant molecule after interaction with the original ingredients using IBM RXN. The resultant forward prediction molecule was tested for pharmacokinetic properties. Thereafter, the possible drug target was analyzed using PLATO prediction. The results show a prominent interaction with Escherichia coli adhesion fimbriae protein. This shows a possible benefit in the treatment and prevention of Escherichia coli infections, which is the commonest organism in urinary tract infections. The results are theoretical and preliminary, and they need to be evaluated in real-time retrospective patient models. There are possibilities for therapeutic doses of wine in prevention and treatment of complicated urinary tract infections.
Area-minimizing Cones over Products of Grassmannian Manifolds
Creators: name: Jiao, Xiaoxiang
name: Cui, Hongbin
name: Xin, Jialin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: This paper is the continuation of the previous one \cite{Cui2021}, where we re-proved the area-minimization of cones over Grassmannians of $n$-planes $G(n,m;\mathbb{F})(\mathbb{F}=\mathbb{R},\mathbb{C},\mathbb{H})$, Cayley plane $\mathbb{O}P^2$ from the point view of Hermitian orthogonal projectors, and gave area-minimizing cones associated to oriented real Grassmannians $\widetilde{G}(n,m;\mathbb{R})$. In this paper, we make a further step on showing that the cones, of dimension no less than $\mathbf{8}$, over minimal products of $G(n,m;\mathbb{F})$ are area-minimizing. Moreover, those cones are very similar to the classical cones over products of spheres, and for the critical situation -- the cones of dimension $\mathbf{7}$ \cite{lawlor1991sufficient}, we gain more area-minimizing cones by carefully computing the Jacobian $inf_{v}det(I-tH^{v}_{ij})$. Certain minimizing cones among them had been found from the perspective of $R$-spaces\cite{Ohno2021area}, or isoparametric theory\cite{tang2020minimizing}, and others are completely new. We also prove that the cones over minimal product of $\widetilde{G}(n,m;\mathbb{R})$ are area-minimizing.
Geometric and chemical components of the giant piezoresistance in silicon nanowires
Creators: name: McClarty, M.
name: Jegenyes, N.
name: Gaudet, M.
name: Toccafondi, C.
name: Ossikovski, R.
name: Vaurette, F.
name: Arscott, S.
name: Rowe, A. C. H.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A wide variety of apparently contradictory piezoresistance (PZR) behaviors have been reported in p-type silicon nanowires (SiNW), from the usual positive bulk effect to anomalous (negative) PZR and giant PZR. The origin of such a range of diverse phenomena is unclear, and consequently so too is the importance of a number of parameters including SiNW type (top down or bottom up), stress concentration, electrostatic field effects, or surface chemistry. Here we observe all these PZR behaviors in a single set of nominally p-type, $\langle 110 \rangle$ oriented, top-down SiNWs at uniaxial tensile stresses up to 0.5 MPa. Longitudinal $π$-coefficients varying from $-800\times10^{-11}$ Pa$^{-1}$ to $3000\times10^{-11}$ Pa$^{-1}$ are measured. Micro-Raman spectroscopy on chemically treated nanowires reveals that stress concentration is the principal source of giant PZR. The sign and an excess PZR similar in magnitude to the bulk effect are related to the chemical treatment of the SiNW.
description: 5 pages, 4 figures
Wine - physicochemical analysis and E coli
Creators: name: Arokiaraj, Mark Christopher
Publisher: name: Zenodo
Year: 2024
Subjects: Wine
Physicochemical properties
ADME
Drug target
Quercetin

description: Wine has been known for its beneficial aspects since ancient years. Cardiovascular benefits are known, but the exact mechanism has yet to be deciphered. The multifarious benefits warrant a deeper level of analysis. The study was performed for the possible understanding of the mechanisms of wine’s benefits. The known components of wine were taken, and it was analyzed for the resultant molecule after interaction with the original ingredients using IBM RXN. The resultant forward prediction molecule was tested for pharmacokinetic properties. Thereafter, the possible drug target was analyzed using PLATO prediction. The results show a prominent interaction with Escherichia coli adhesion fimbriae protein. This shows a possible benefit in the treatment and prevention of Escherichia coli infections, which is the commonest organism in urinary tract infections. The results are theoretical and preliminary, and they need to be evaluated in real-time retrospective patient models. There are possibilities for therapeutic doses of wine in prevention and treatment of complicated urinary tract infections.
Spatial and Vertical Pelagic Microbiome off the Santos Basin, South Atlantic Ocean.
Creators: name: Bergo, Natascha
name: Peres, Francielli
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 310703
subject: Microbial ecology

description: The coastal-to-open ocean vertical microbiome was investigated using water samples from the Santos Basin, Southwest Atlantic Ocean. Using a spatial and vertical metagenomics approach, we assessed the diversity and distribution of pelagic microbes, identified major bacterial and archaeal taxa, and inferred their ecosystem functions. A total of 67 water samples were collected during the SANAGU 2019 expedition, corresponding to 28 different sampling stations distributed across the Santos Basin. Six discrete sampling depths: 1 meter (M1), deep chlorophyll maximum layer (DCM), 250 meters (M250), 900 meters (M900), and 2300 meters (M2300) were chosen within the water masses (TW - Tropical Water, CW - Coastal Water, SACW - South Atlantic Central Water, AIW - Antarctic Intermediate Water, and CSW - Circumpolar Superior Water at each oceanographic station.
Wine - physicochemical analysis and E coli
Creators: name: Arokiaraj, Mark Christopher
Publisher: name: Zenodo
Year: 2024
Subjects: Wine
Physicochemical properties
ADME
Drug target
Quercetin

description: Wine has been known for its beneficial aspects since ancient years. Cardiovascular benefits are known, but the exact mechanism has yet to be deciphered. The multifarious benefits warrant a deeper level of analysis. The study was performed for the possible understanding of the mechanisms of wine’s benefits. The known components of wine were taken, and it was analysed for the resultant molecule after interaction with the original ingredients using IBM RXN. The resultant forward prediction molecule was tested for pharmacokinetic properties. Thereafter, the possible drug target was analysed using PLATO prediction. The results show a prominent interaction with Escherichia coli adhesion fimbriae protein. When the components of bread was added (amylopectin and maltose) to the equation of the components of wine, the result simplifies to quercetin by IBM RXN, though the confidence is low.  By PLATO prediction, quercetin has a reliable targets on Escherichia coli. This shows a possible benefit in the treatment and prevention of Escherichia coli infections, which is the commonest organism in urinary tract infections. The results are theoretical and preliminary, and they need to be evaluated in real-time retrospective patient models. There are possibilities for therapeutic doses of wine in prevention and treatment of complicated urinary tract infections.
Testing for a Random Walk Structure in the Frequency Evolution of a Tone in Noise
Creators: name: Abramson, S. E.
name: Moran, W.
name: Evans, R. J.
name: Melatos, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Inference and hypothesis testing are typically constructed on the basis that a specific model holds for the data. To determine the veracity of conclusions drawn from such data analyses, one must be able to identify the presence of the assumed structure within the data. In this paper, a model verification test is developed for the presence of a random walk-like structure in the variations in the frequency of complex-valued sinusoidal signals measured in additive Gaussian noise. This test evaluates the joint inference of the random walk hypothesis tests found in economics literature that seek random walk behaviours in time series data, with an additional test to account for how the random walk behaves in frequency space.
description: 25 pages, 14 figures
Raychaudhuri equation in scalar-tensor theory
Creators: name: Choudhury, Shibendu Gupta
name: Dasgupta, Ananda
name: Banerjee, Narayan
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Implications of the Raychaudhuri equation in focusing of geodesic congruences are studied in the framework of scalar--tensor theory of gravity. Specifically, we investigate the Brans--Dicke theory and Bekenstein's scalar field theory. In both of these theories, we deal with a static spherically symmetric distribution and a spatially homogeneous and isotropic cosmological model as specific examples. We find that it is possible to violate the convergence condition under reasonable physical assumptions. This leads to the possibility of avoiding a singularity.
description: 16 pages, 5 figures, matches with the published version
Gravitational-Wave Background from Binary Mergers and Metallicity Evolution of Galaxies
Creators: name: Nakazato, Ken'ichiro
name: Niino, Yuu
name: Sago, Norichika
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The cosmological evolution of the binary black hole (BH) merger rate and the energy density of the gravitational-wave (GW) background are investigated. To evaluate the redshift dependence of the BH formation rate, BHs are assumed to originate from low-metallicity stars, and the relations between the star formation rate, metallicity and stellar mass of galaxies are combined with the stellar mass function at each redshift. As a result, it is found that when the energy density of the GW background is scaled with the merger rate at the local Universe, the scaling factor does not depend on the critical metallicity for the formation of BHs. Also taking into account the merger of binary neutron stars, a simple formula to express the energy spectrum of the GW background is constructed for the inspiral phase. The relation between the local merger rate and the energy density of the GW background will be examined by future GW observations.
description: 10 pages, 10 figures, updated to reflect full results from the first Advanced LIGO Observing Run, accepted for publication in ApJ
On the State Complexity of the Shuffle of Regular Languages
Creators: name: Brzozowski, Janusz
name: Jirásková, Galina
name: Liu, Bo
name: Rajasekaran, Aayush
name: Szykuła, Marek
Publisher: name: arXiv
Year: 2015
Subjects: subject: Formal Languages and Automata Theory (cs.FL)
subject: FOS: Computer and information sciences

description: We investigate the shuffle operation on regular languages represented by complete deterministic finite automata. We prove that $f(m,n)=2^{mn-1} + 2^{(m-1)(n-1)}(2^{m-1}-1)(2^{n-1}-1)$ is an upper bound on the state complexity of the shuffle of two regular languages having state complexities $m$ and $n$, respectively. We also state partial results about the tightness of this bound. We show that there exist witness languages meeting the bound if $2\le m\le 5$ and $n\ge2$, and also if $m=n=6$. Moreover, we prove that in the subset automaton of the NFA accepting the shuffle, all $2^{mn}$ states can be distinguishable, and an alphabet of size three suffices for that. It follows that the bound can be met if all $f(m,n)$ states are reachable. We know that an alphabet of size at least $mn$ is required provided that $m,n \ge 2$. The question of reachability, and hence also of the tightness of the bound $f(m,n)$ in general, remains open.
description: The final publication is available at Springer via http://dx.doi.org/10.1007/978-3-319-41114-9_6
Persistent homology analysis for dense QCD effective model with heavy quarks
Creators: name: Kashiwa, Kouji
name: Hirakida, Takehiro
name: Kouno, Hiroaki
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The isospin chemical potential region is known as the sign-problem free region of quantum chromodynamics (QCD). In this paper, we introduce the isospin chemical potential to the three-dimensional three-state Potts model to mimic the dense QCD; e.g., the QCD effective model with heavy quarks at finite density. We call it as QCD-like Potts model. The QCD-like Potts model does not have the sign problem, but we can expect that it shares some properties with QCD. Since we can obtain the non-approximated Potts spin configuration at finite isospin chemical potential where the simple Metropolis algorithm can work, we perform the persistent homology analysis towards exploring the dense spatial structure of QCD. We show that the averaged birth-death ratio has the same information with the Polyakov loop, but the maximum birth-death ratio has additional information near the phase transition.
description: 10 pages, 10 figures
Scattering and bound states of a spin--1/2 neutral particle in the cosmic string spacetime
Creators: name: Andrade, Fabiano M.
name: Filgueiras, Cleverson
name: Silva, Edilberto O.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper the relativistic quantum dynamics of a spin-1/2 neutral particle with a magnetic moment $μ$ in the cosmic string spacetime is reexamined by applying the von Neumann theory of self--adjoint extensions. Contrary to previous studies where the interaction between the spin and the line of charge is neglected, here we consider its effects. This interaction gives rise to a point interaction: $\boldsymbol{\nabla} \cdot \mathbf{E}= (2λ/α)δ(r)/r$. Due to the presence of the Dirac delta function, by applying an appropriated boundary condition provided by the theory of self--adjoint extensions, irregular solutions for the Hamiltonian are allowed. We address the scattering problem obtaining the phase shift, S-matrix and the scattering amplitude. The scattering amplitude obtained shows a dependency with energy which stems from the fact that the helicity is not conserved in this system. Examining the poles of the S-matrix we obtain an expression for the bound states. The presence of bound states for this system has not been discussed before in the literature.
description: 7 pages, 5 figures; Invited contribution to the special issue "The Potential Model in High Energy Physics" in Advances in High Energy Physics
Model comparison of the transverse momentum spectra of charged hadrons produced in $PbPb$ collision at $\sqrt{s_{NN}} = 5.02$ TeV
Creators: name: Gupta, Rohit
name: Jena, Satyajit
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Transverse Momentum, $p_T$, spectra is of prime importance in order to extract crucial information about the evolution dynamics of the system of particles produced in the collider experiments. In this work, the transverse momentum spectra of charged hadrons produced in $PbPb$ collision at $5.02$ TeV has been analyzed using different distribution functions in order to gain strong insight into the information that can be extracted from the spectra. We have also discussed the applicability of Pearson distribution on the spectra of charged hadron at $5.02$ TeV.
Holographic Shear Viscosity in Hyperscaling Violating Theories without Translational Invariance
Creators: name: Ling, Yi
name: Xian, Zhuo-Yu
name: Zhou, Zhenhua
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we investigate the ratio of shear viscosity to entropy density, $η/s$, in hyperscaling violating geometry with lattice structure. We show that the scaling relation with hyperscaling violation gives a strong constraint to the mass of graviton and usually leads to a power law of temperature, $η/s\sim T^κ$. We find the exponent $κ$ can be greater than two such that the new bound for viscosity raised in arXiv:1601.02757 is violated. Our above observation is testified by constructing specific solutions with UV completion in various holographic models. Finally, we compare the boundedness of $κ$ with the behavior of entanglement entropy and conjecture a relation between them.
description: 38 pages, 8 figures: 1 appendix added, 2 figures added, 1 references added
Microwave-induced resistance oscillations as a classical memory effect
Creators: name: Beltukov, Y. M.
name: Dyakonov, M. I.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: By numerical simulations and analytical studies, we show that the phenomenon of microwave-induced resistance oscillations can be understood as a classical memory effect caused by re-collisions of electrons with scattering centers after a cyclotron period. We develop a Drude-like approach to magneto-transport in presence of a microwave field, taking account of memory effects, and find an excellent agreement between numerical and analytical results, as well as a qualitative agreement with experiment.
description: 6 pages, 3 figures
Photoemission spectroscopy using virtual photons emitted by positron sticking: a new probe of the top layer surface electronic structure
Creators: name: Fairchild, Alexander J
name: Chirayath, Varghese A.
name: Barbiellini, Bernardo
name: Gladen, Randall W.
name: Koymen, Ali R.
name: Weiss, Alex H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a spectroscopic method which utilizes virtual photons to selectively measure the electronic structure of the top-most atomic layer. These virtual photons are created when incident positrons transition from vacuum states to bound surface states on the sample surface and can transfer sufficient energy to excite electrons into the vacuum. The short interaction range of the virtual photons restricts the penetration depth to approximately the Thomas-Fermi screening length. Measurements and analysis of the kinetic energies of the emitted electrons made on a single-layer of graphene deposited on Cu and on the clean Cu substrate shows that the ejected electrons originate exclusively from the top-most atomic layer. Moreover, we find that the kinetic energies of the emitted electrons reflect the density of states at the surface. These results demonstrate that this technique will be a complementary tool to existing spectroscopic techniques in determining the electronic structure of 2D materials and fragile systems due to the absence of subsurface contributions and probe-induced surface damage.