cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
onlineforecast: An R package for adaptive and recursive forecasting
Creators: name: Bacher, Peder
name: Bergsteinsson, Hjörleifur G.
name: Frölke, Linde
name: Sørensen, Mikkel L.
name: Lemos-Vinasco, Julian
name: Liisberg, Jon
name: Møller, Jan Kloppenborg
name: Nielsen, Henrik Aalborg
name: Madsen, Henrik
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation (stat.CO)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: G.3
subject: 62-04

description: Systems that rely on forecasts to make decisions, e.g. control or energy trading systems, require frequent updates of the forecasts. Usually, the forecasts are updated whenever new observations become available, hence in an online setting. We present the R package onlineforecast that provides a generalized setup of data and models for online forecasting. It has functionality for time-adaptive fitting of dynamical and non-linear models. The setup is tailored to enable the effective use of forecasts as model inputs, e.g. numerical weather forecast. Users can create new models for their particular applications and run models in an operational setting. The package also allows users to easily replace parts of the setup, e.g. using neural network methods for estimation. The package comes with comprehensive vignettes and examples of online forecasting applications in energy systems, but can easily be applied for online forecasting in all fields.
description: 36 pages
History of Solar Magnetic Fields since George Ellery Hale
Creators: name: Stenflo, Jan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: As my own work on the Sun's magnetic field started exactly 50 years ago at Crimea in the USSR, I have been a participant in the field during nearly half the time span since Hale's discovery in 1908 of magnetic fields in sunspots. The present historical account is accompanied by photos from my personal slide collection, which show a number of the leading personalities who advanced the field in different areas: measurement techniques, from photographic to photoelectric and imaging methods in spectro-polarimetry; theoretical foundations of MHD and the origin of cosmic magnetic fields (birth of dynamo theory); the quest for increased angular resolution from national projects to international consortia (for instruments both on ground and in space); introduction of the Hanle effect in astrophysics and the Second Solar Spectrum as its playground; small-scale nature of the field, the fundamental resolution limit, and transcending it by resolution-independent diagnostics.
Splitting of the monolayer out-of-plane A'1 Raman mode in few-layer WS2
Creators: name: Staiger, Matthias
name: Gillen, Roland
name: Scheuschner, Nils
name: Ochedowski, Oliver
name: Kampmann, Felix
name: Schleberger, Marika
name: Thomsen, Christian
name: Maultzsch, Janina
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present Raman measurements of mono- and few-layer WS2. We study the monolayer A'1 mode around 420 cm(-1) and its evolution with the number of layers. We show that with increasing layer number there is an increasing number of possible vibrational patterns for the out-of-plane Raman mode: in N-layer WS2 there are N Gamma-point phonons evolving from the A'1 monolayer mode. For an excitation energy close to resonance with the excitonic transition energy we were able to observe all of these N components, irrespective of their Raman activity. Density functional theory calculations support the experimental findings and make it possible to attribute the modes to their respective symmetries. The findings described here are of general importance for all other phonon modes in WS2 and other layered transition metal dichalcogenide systems in the few layer regime.
Hidden Symmetry in 1D Localization
Creators: name: Suslov, I. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Resistance ρof an one-dimensional disordered system of length l has the log-normal distribution in the limit of large l. Parameters of this distribution depend on the Fermi level position, but are independent on the boundary conditions. However, the boundary conditions essentially affect the distribution of phases entering the transfer matrix, and generally change the parameters of the evolution equation for the distribution P(ρ). This visible contradiction is resolved by existence of the hidden symmetry, whose nature is revealed by derivation of the equation for the stationary phase distribution and by analysis of its transformation properties.
description: Latex, 8 pages, 2 figures included
Mathematical Runtime Analysis for the Non-Dominated Sorting Genetic Algorithm II (NSGA-II)
Creators: name: Zheng, Weijie
name: Doerr, Benjamin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The non-dominated sorting genetic algorithm II (NSGA-II) is the most intensively used multi-objective evolutionary algorithm (MOEA) in real-world applications. However, in contrast to several simple MOEAs analyzed also via mathematical means, no such study exists for the NSGA-II so far. In this work, we show that mathematical runtime analyses are feasible also for the NSGA-II. As particular results, we prove that with a population size four times larger than the size of the Pareto front, the NSGA-II with two classic mutation operators and four different ways to select the parents satisfies the same asymptotic runtime guarantees as the SEMO and GSEMO algorithms on the basic OneMinMax and LeadingOnesTrailingZeros benchmarks. However, if the population size is only equal to the size of the Pareto front, then the NSGA-II cannot efficiently compute the full Pareto front: for an exponential number of iterations, the population will always miss a constant fraction of the Pareto front. Our experiments confirm the above findings.
description: Journal version of the paper "Weijie Zheng, Yufei Liu, Benjamin Doerr: A First Mathematical Runtime Analysis of the Non-Dominated Sorting Genetic Algorithm II (NSGA-II). AAAI 2022. arXiv:2112.08581v3"
Recurrent Neural Networks (RNNs) with dimensionality reduction and break down in computational mechanics; application to multi-scale localization step
Creators: name: Wu, Ling
name: Noels, Ludovic
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: Artificial Neural Networks (NNWs) are appealing functions to substitute high dimensional and non-linear history-dependent problems in computational mechanics since they offer the possibility to drastically reduce the computational time. This feature has recently been exploited in the context of multi-scale simulations, in which the NNWs serve as surrogate model of micro-scale finite element resolutions. Nevertheless, in the literature, mainly the macro-stress-macro-strain response of the meso-scale boundary value problem was considered and the micro-structure information could not be recovered in a so-called localization step. In this work, we develop Recurrent Neural Networks (RNNs) as surrogates of the RVE response while being able to recover the evolution of the local micro-structure state variables for complex loading scenarios. The main difficulty is the high dimensionality of the RNNs output which consists in the internal state variable distribution in the micro-structure. We thus propose and compare several surrogate models based on a dimensionality reduction: i) direct RNN modeling with implicit NNW dimensionality reduction, ii) RNN with PCA dimensionality reduction, and iii) RNN with PCA dimensionality reduction and dimensionality break down, i.e. the use of several RNNs instead of a single one. Besides, we optimize the sequential training strategy of the latter surrogate for GPU usage in order to speed up the process. Finally, through RNN modeling of the principal components coefficients, the connection between the physical state variables and the hidden variables of the RNN is revealed, and exploited in order to select the hyper-parameters of the RNN-based surrogate models in their design stage.
Signatures of Dark Matter Halo Expansion in Galaxy Populations
Creators: name: Brook, Chris B.
name: Di Cintio, Arianna
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Dark matter cores within galaxy haloes can be formed by energy feedback from star forming regions: an energy balance suggests that the maximum core formation efficiency arises in galaxies with M$_{\star}\sim10^{8.5}$M$_{\odot}$. We show that a model population of galaxies, in which the density profile has been modified by such baryonic feedback, is able to explain the observed galaxy velocity function and Tully-Fisher relations significantly better than a model in which a universal cuspy density profile is assumed. Alternative models, namely warm or self-interacting dark matter, also provide a better match to these observed relations than a universal profile model does, but make different predictions for how halo density profiles vary with mass compared to the baryonic feedback case. We propose that different core formation mechanisms may be distinguished based on the imprint they leave on galaxy populations over a wide range of mass. Within the current observational data we find evidence of the expected signatures of the mass dependence of core formation generated by baryonic feedback.
description: 11 pages, 9 figures, accepted in MNRAS
Numerical Quadrature for Singular Integrals on Fractals
Creators: name: Gibbs, A.
name: Hewett, D. P.
name: Moiola, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65D32 (Primary), 28A78, 28A80 (Secondary)

description: We present and analyse numerical quadrature rules for evaluating regular and singular integrals on self-similar fractal sets. The integration domain $\mathbb{R}^n$ is assumed to be the compact attractor of an iterated function system of contracting similarities satisfying the open set condition. Integration is with respect to any ``invariant'' (also known as ``balanced'' or ``self-similar'') measure supported on $Γ$, including in particular the Hausdorff measure $\mathcal{H}^d$ restricted to $Γ$, where $d$ is the Hausdorff dimension of $Γ$. Both single and double integrals are considered. Our focus is on composite quadrature rules in which integrals over $Γ$ are decomposed into sums of integrals over suitable partitions of $Γ$ into self-similar subsets. For certain singular integrands of logarithmic or algebraic type we show how in the context of such a partitioning the invariance property of the measure can be exploited to express the singular integral exactly in terms of regular integrals. For the evaluation of these regular integrals we adopt a composite barycentre rule, which for sufficiently regular integrands exhibits second-order convergence with respect to the maximum diameter of the subsets. As an application we show how this approach, combined with a singularity-subtraction technique, can be used to accurately evaluate the singular double integrals that arise in Hausdorff-measure Galerkin boundary element methods for acoustic wave scattering by fractal screens.
Analysis and plotting scripts for first manuscript submission of "Temporal and spatial scale dependency of air-sea interactions via the vertical mixing mechanism"
Creators: name: Putrasahan, Dian
Publisher: name: Zenodo
Year: 2023

description: Analysis and plotting scripts for figures in first manuscript submission of "Temporal and spatial scale dependency of air-sea interactions via the vertical mixing mechanism" by Dian A. Putrasahan and Jin-Song von Storch. Summary: (25 analysis scripts + 6 function scripts) 0) Collection of python functions pertaining to this analysis edgevertexcell.py extractICONdata.py getSpectraPlot_r2b9.py plotspectra_r2b9.py r2b9ocnrgn.py spatialspec_r2b9.py 1) Extract daily and monthly fields (SST and windstress) on ocean grid extractR2B9ocn_monthly.job extractR2B9ocn_daily.job 2) Compute the SST gradients and the wind stress divergence create_daily_SSTgrad_TAUdivcurl_ngc2009.py create_monthly_SSTgrad_TAUdivcurl_ngc2009.py create_hourly_SSTgrad_TAUdivcurl_ocn_ngc2009.py 3a) Spatially filter full fields (2deg) = high-pass filtered + smoothed fields sm_monthly_SSTgradTAUdivcurl_ngc2009.job submit_smmonthly_SSTgradTAUdivcurl_ngc2009.sh sm_daily_SSTgradTAUdivcurl_ngc2009.job submit_smdaily_SSTgradTAUdivcurl_ngc2009.sh sm_hourly_SSTgradTAUdivcurl_ngc2009.job submit_smhourly_SSTgradTAUdivcurl_ngc2009.sh 3b) Compute global distribution of coupling coefficient and pattern correlation [Figure 1] Fig1.ipynb 4) Use full daily fields and interpolate onto regular grid 3600x1800 create_daily_0.05deg_downSST.py create_daily_0.05deg_TAUdiv.py 5) For each ocean basin, compute FFT for each latitude. FFT_monthly_0.05deg_downSST_TAUdiv.py FFTthres_daily_0.05deg.py execFFT_thres_005deg.job submit_FFTrgn_thres_daily_005.sh 6) Compute and plot spatial spectra for each ocean basin [Figure 2] Fig2.py 7) Compute and plot frequency-wavenumber spectra for N. Atlantic, tropical Pacific and Southern Ocean [Figure 3] Fig3a.py Fig3b.py Fig3c.py 8) Global distribution of coupling coefficient and pattern correlation based on 10deg smoothing [Figure S1] FigS1.ipynb 9) Spatial power spectra of SST and SST gradients [Figure S2] FigS2.py 10) Spatial coherence of downwind SST gradient and windstress divergence as a function of latitude based on daily data [Figure S3] FigS3.ipynb
title: Übergangsmetall-katalysierte Allylsubstitution fluorierter Olefine und Synthese von geschützten Dipeptidmimetika
title: Transition Metal Catalyzed Allylic Substitution of Fluorinated Olefins and Synthesis of Protected Dipeptidomimetics
titleType: AlternativeTitle
Creators: name: Middel, Christoph
Publisher: name: Philipps-Universität Marburg
Year: 2022
Subjects: Chemistry & allied sciences
Chemie

description: Im Rahmen dieser Arbeit wurden Trifluoracetate mit unterschiedlichen funktionellen Gruppen hoch regio- und hoch stereoselektiv in die entsprechenden Allylnitrile überführt, welche in guter Ausbeute und guter Z/E-Selektivität erhalten werden konnten. Die Umsetzung von Trifluoracetaten mit aromatischen Substituenten in Konjugation zum Fluorolefin oder einer Allylcarbamatgruppe mit freiem NH gestalteten sich schwierig. Wurde jedoch ein Trifluoracetat mit einer PMB-geschützten Allylcarbamatfunktion verwendet, konnte das entsprechende Nitril erfolgreich dargestellt werden. Durch zwei weitere Reaktionsschritte konnte die Nitrilgruppe in eine Carbonsäure überführt werden, sodass ein Zugang zu PMB- und Boc-geschützten Dipeptidmimetika entwickelt wurde. Die Konfigurationsbestimmung des Stereozentrums erfolgten durch eine parallele Synthese eines scalemischen Cbz-geschützten Aminoalkohols. Zum einen ausgehend von einem Nitril und zum anderen ausgehend von Acryloylchlorid nach einer literaturbekannten Vorschrift und anschließendem Vergleich des Laufverhaltens auf der chiralen HPLC. Weiterhin wurde eine mögliche Syntheseroute für Dipeptidmimetika mit zweitem Stereozentrum untersucht. Allerdings erfolgte hier zum einen eine Racemisierung und zum anderen war eine Hydrofluorierung nach bekannten Methoden nicht möglich, sodass zur erfolgreichen Darstellung eine andere Synthesestrategie gewählt werden muss. Eine Entschützung des geschützten Dipeptidmimetikums unter Standardbedingungen war leider nicht erfolgreich und aus zeitlichen Gründen konnten lediglich einige Hinweise für weitere Untersuchungen gesammelt werden. Es wurde ebenfalls eine regioselektive, Palladium-katalysierte Allylsubstitution von Trifluoracetaten in terminaler Position mit Methylmalonsäuredimethylester entwickelt, die den entsprechenden Diester nach kurzer Reaktionszeit in sehr guter Ausbeute und Z/E-Selektivität, ohne Bildung des Regioisomers, ergibt. Die Verwendung anderer Nukleophile gestaltete sich allerdings schwierig und die Untersuchung anderer terminaler Trifluoracetate als mögliche Edukte steht noch aus. Weiterhin wurde eine Methode zur Iridium-katalysierten Allylsubstitution zur Umsetzung von internen Trifluoracetaten mit Dimethylmalonsäureester entwickelt, welche die entsprechenden Produkte in guten Ausbeuten mit exzellenter Z/E-Selektivität ergibt. Aus zeitlichen Gründen war zwar bisher nur eine begrenzte Variation von Nukleophil und Fluorolefin möglich, jedoch konnte gezeigt werden, dass die Reaktion hoch regio- und stereoselektiv verläuft. Die experimentelle Bestimmung des Stereozentrums und eine mögliche Diastereoselektivität bei der Verwendung von unsymmetrischen Nukleophilen stehen noch aus.
DuMLP-Pin: A Dual-MLP-dot-product Permutation-invariant Network for Set Feature Extraction
Creators: name: Fei, Jiajun
name: Zhu, Ziyu
name: Liu, Wenlei
name: Deng, Zhidong
name: Li, Mingyang
name: Deng, Huanjun
name: Zhang, Shuo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Existing permutation-invariant methods can be divided into two categories according to the aggregation scope, i.e. global aggregation and local one. Although the global aggregation methods, e. g., PointNet and Deep Sets, get involved in simpler structures, their performance is poorer than the local aggregation ones like PointNet++ and Point Transformer. It remains an open problem whether there exists a global aggregation method with a simple structure, competitive performance, and even much fewer parameters. In this paper, we propose a novel global aggregation permutation-invariant network based on dual MLP dot-product, called DuMLP-Pin, which is capable of being employed to extract features for set inputs, including unordered or unstructured pixel, attribute, and point cloud data sets. We strictly prove that any permutation-invariant function implemented by DuMLP-Pin can be decomposed into two or more permutation-equivariant ones in a dot-product way as the cardinality of the given input set is greater than a threshold. We also show that the DuMLP-Pin can be viewed as Deep Sets with strong constraints under certain conditions. The performance of DuMLP-Pin is evaluated on several different tasks with diverse data sets. The experimental results demonstrate that our DuMLP-Pin achieves the best results on the two classification problems for pixel sets and attribute sets. On both the point cloud classification and the part segmentation, the accuracy of DuMLP-Pin is very close to the so-far best-performing local aggregation method with only a 1-2% difference, while the number of required parameters is significantly reduced by more than 85% in classification and 69% in segmentation, respectively. The code is publicly available on https://github.com/JaronTHU/DuMLP-Pin.
description: 16 pages, accepted by AAAI 2022 (https://ojs.aaai.org/index.php/AAAI/article/view/19939), with technical appendix
title: Situation-aware Edge Computing
title: Situationsbewusstes Edge Computing
titleType: AlternativeTitle
Creators: name: Sterz, Artur
Publisher: name: Philipps-Universität Marburg
Year: 2022
Subjects: Edge
Embedded
Projection
Situation
Situation-awareness
Infrastructure
Device
Data processing Computer science
Informatik
Perception
Edge Computing
Comprehension

description: Future wireless networks must cope with an increasing amount of data that needs to be transmitted to or from mobile devices. Furthermore, novel applications, e.g., augmented reality games or autonomous driving, require low latency and high bandwidth at the same time. To address these challenges, the paradigm of edge computing has been proposed. It brings computing closer to the users and takes advantage of the capabilities of telecommunication infrastructures, e.g., cellular base stations or wireless access points, but also of end user devices such as smartphones, wearables, and embedded systems. However, edge computing introduces its own challenges, e.g., economic and business-related questions or device mobility. Being aware of the current situation, i.e., the domain-specific interpretation of environmental information, makes it possible to develop approaches targeting these challenges. In this thesis, the novel concept of situation-aware edge computing is presented. It is divided into three areas: situation-aware infrastructure edge computing, situation-aware device edge computing, and situation-aware embedded edge computing. Therefore, the concepts of situation and situation-awareness are introduced. Furthermore, challenges are identified for each area, and corresponding solutions are presented. In the area of situation-aware infrastructure edge computing, economic and business-related challenges are addressed, since companies offering services and infrastructure edge computing facilities have to find agreements regarding the prices for allowing others to use them. In the area of situation-aware device edge computing, the main challenge is to find suitable nodes that can execute a service and to predict a node’s connection in the near future. Finally, to enable situation-aware embedded edge computing, two novel programming and data analysis approaches are presented that allow programmers to develop situation-aware applications. To show the feasibility, applicability, and importance of situation-aware edge computing, two case studies are presented. The first case study shows how situation-aware edge computing can provide services for emergency response applications, while the second case study presents an approach where network transitions can be implemented in a situation-aware manner.
Trifolium latinum Sebast., Roman. Pl. Fasc. Prim.
Creators: name: Peruzzi, Lorenzo
name: Galasso, Gabriele
name: Domina, Gianniantonio
name: Bartolucci, Fabrizio
name: Santangelo, Annalisa
name: Alessandrini, Alessandro
name: Astuti, Giovanni
name: D'Antraccoli, Marco
name: Roma-Marzio, Francesco
name: Ardenghi, Nicola M. G.
name: Barberis, Giuseppina
name: Conti, Fabio
name: Bernardo, Liliana
name: Peccenini, Simonetta
name: Stinca, Adriano
name: Wagensommer, Robert P.
name: Bonari, Gianmaria
name: Iamonico, Duilio
name: Iberite, Mauro
name: Viciani, Daniele
name: Guacchio, Emanuele Del
name: Galdo, Gianpietro Giusso Del
name: Lastrucci, Lorenzo
name: Villani, Mariacristina
name: Brunu, Antonello
name: Magrini, Sara
name: Pistarino, Annalaura
name: Brullo, Salvatore
name: Salmeri, Cristina
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Fabales
Fabaceae
Trifolium
Trifolium latinum

description: Trifolium latinum Sebast., Roman. Pl. Fasc. Prim.: 7 (pl. 1 fig. 2). 1813.
 Ind. Loc.:—“in Sylvula prope Romam versus Mare vulgo dicta Macchia de’ Mattei”. LAZ
 Type (lectotype designated by Iamonico et al. 2011: 459):— ITALY. Trifolium latinum in Sebastiani, Roman. Pl. Fasc. Prim. 7 (pl. 1, f. 2). 1813. [icon]. Epitype (designated by Iamonico et al. 2011: 459):— ITALY. Alla Macchia de’ Mattei fuori la porta portese, giugno. Herb. E. Mauri 12775 (RO).
 Compiled by:— M. Iberite
description: Published as part of Peruzzi, Lorenzo, Galasso, Gabriele, Domina, Gianniantonio, Bartolucci, Fabrizio, Santangelo, Annalisa, Alessandrini, Alessandro, Astuti, Giovanni, D'Antraccoli, Marco, Roma-Marzio, Francesco, Ardenghi, Nicola M. G., Barberis, Giuseppina, Conti, Fabio, Bernardo, Liliana, Peccenini, Simonetta, Stinca, Adriano, Wagensommer, Robert P., Bonari, Gianmaria, Iamonico, Duilio, Iberite, Mauro, Viciani, Daniele, Guacchio, Emanuele Del, Galdo, Gianpietro Giusso Del, Lastrucci, Lorenzo, Villani, Mariacristina, Brunu, Antonello, Magrini, Sara, Pistarino, Annalaura, Brullo, Salvatore & Salmeri, Cristina, 2019, An inventory of the names of native, non-endemic vascular plants described from Italy, their loci classici and types, pp. 1-215 in Phytotaxa 410 (1) on page 171, DOI: 10.11646/phytotaxa.410.1.1, http://zenodo.org/record/13716045
High-sensitive C-Reactive Protein as a Marker for Inflammation in Irritable Bowel Syndrome
Creators: name: Ringel-Kulka, Tamar
name: Ringel, Yehuda
name: Maharshak, Nitsan
name: Hod, Keren
name: Martin, Christopher F.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: Recent studies demonstrated low-grade inflammation in patients with Irritable Bowel Syndrome (IBS). However, these studies have been relatively small and do not enable examination of this factor in different subtypes of IBS and the possibility of confounding effects of co-morbidities that may be associated with inflammatory responses.
A theorem of Gordan and Noether via Gorenstein rings
Creators: name: Bricalli, Davide
name: Favale, Filippo F.
name: Pirola, Gian Pietro
Publisher: name: arXiv
Year: 2022
Subjects: subject: Algebraic Geometry (math.AG)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: Primary: 14J70, Secondary: 14J30, 13E10, 14A25, 14A05

description: Gordan and Noether proved in their fundamental theorem that an hypersurface $X=V(F)\subseteq \mathbb{P}^n$ with $n\leq 3$ is a cone if and only if $F$ has vanishing hessian (i.e. the determinant of the Hessian matrix). They also showed that the statement is false if $n\geq 4$, by giving some counterexamples. Since their proof, several others have been proposed in the literature. In this paper we give a new one by using a different perspective which involves the study of standard Artinian Gorenstein $\mathbb{K}$-algebras and the Lefschetz properties. As a further application of our setting, we prove that a standard Artinian Gorenstein algebra $R=\mathbb{K}[x_0,\dots,x_4]/J$ with $J$ generated by a regular sequence of quadrics has the strong Lefschetz property. In particular, this holds for Jacobian rings associated to smooth cubic threefolds.
description: 21 pages
Effect of clustering on primordial black hole microlensing constraints
Creators: name: Gorton, Matthew
name: Green, Anne M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Stellar microlensing observations tightly constrain compact object dark matter in the mass range $(10^{-11} - 10^{3}) M_{\odot}$. Primordial Black Holes (PBHs) form clusters, and it has been argued that these microlensing constraints are consequently weakened or evaded. For the most commonly studied PBH formation mechanism, the collapse of large gaussian curvature perturbations generated by inflation, the clusters are sufficiently extended that the PBHs within them act as individual lenses. We find that if the typical mass of the clusters is sufficiently large, $ \gtrsim 10^{6} M_{\odot}$, then the event duration distribution can deviate significantly from that produced by a smooth dark matter distribution, in particular at the shortest durations. As a consequence of this, the probability distribution of the number of observed events is non-Poissonian, peaking at a lower value, with an extended tail to large numbers of events. However, for PBHs formed from the collapse of large inflationary perturbations, the typical cluster is expected to contain $\sim 10^{3}$ PBHs. In this case the effect of clustering is negligibly small, apart from for the most massive PBHs probed by decade-long stellar microlensing surveys ($M_{\rm PBH} \sim 10^{3} M_{\odot}$).
description: 8 pages, 2 figures. v2: minor changes to method, no changes to results. v3: minor changes to formatting to comply with new UKRI Open Access rules, no changes to science. v4: version to appear in JCAP, minor changes
Trifolium ligusticum Loisel., Fl. Gall.
Creators: name: Peruzzi, Lorenzo
name: Galasso, Gabriele
name: Domina, Gianniantonio
name: Bartolucci, Fabrizio
name: Santangelo, Annalisa
name: Alessandrini, Alessandro
name: Astuti, Giovanni
name: D'Antraccoli, Marco
name: Roma-Marzio, Francesco
name: Ardenghi, Nicola M. G.
name: Barberis, Giuseppina
name: Conti, Fabio
name: Bernardo, Liliana
name: Peccenini, Simonetta
name: Stinca, Adriano
name: Wagensommer, Robert P.
name: Bonari, Gianmaria
name: Iamonico, Duilio
name: Iberite, Mauro
name: Viciani, Daniele
name: Guacchio, Emanuele Del
name: Galdo, Gianpietro Giusso Del
name: Lastrucci, Lorenzo
name: Villani, Mariacristina
name: Brunu, Antonello
name: Magrini, Sara
name: Pistarino, Annalaura
name: Brullo, Salvatore
name: Salmeri, Cristina
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Fabales
Fabaceae
Trifolium
Trifolium ligusticum

description: Trifolium ligusticum Balb. ex Loisel., Fl. Gall. 2: 731. 1807. [after 12 april 1807]
 Ind. Loc.:—“in Liguria, circa Savonam”. LIG
 Type:— ITALY. Liguria, s.d., Balbis s.n. (holotype, MRA).
 Compiled by:— G. Vacca
description: Published as part of Peruzzi, Lorenzo, Galasso, Gabriele, Domina, Gianniantonio, Bartolucci, Fabrizio, Santangelo, Annalisa, Alessandrini, Alessandro, Astuti, Giovanni, D'Antraccoli, Marco, Roma-Marzio, Francesco, Ardenghi, Nicola M. G., Barberis, Giuseppina, Conti, Fabio, Bernardo, Liliana, Peccenini, Simonetta, Stinca, Adriano, Wagensommer, Robert P., Bonari, Gianmaria, Iamonico, Duilio, Iberite, Mauro, Viciani, Daniele, Guacchio, Emanuele Del, Galdo, Gianpietro Giusso Del, Lastrucci, Lorenzo, Villani, Mariacristina, Brunu, Antonello, Magrini, Sara, Pistarino, Annalaura, Brullo, Salvatore & Salmeri, Cristina, 2019, An inventory of the names of native, non-endemic vascular plants described from Italy, their loci classici and types, pp. 1-215 in Phytotaxa 410 (1) on page 172, DOI: 10.11646/phytotaxa.410.1.1, http://zenodo.org/record/13716045
Role of Nonsteroidal Anti-Inflammatory Drugs in Exacerbations of Inflammatory Bowel Disease
Creators: name: Anton, Kristen
name: Long, Millie D.
name: Chen, Wenli
name: Kappelman, Michael D.
name: Sandler, Robert S.
name: Martin, Christopher F.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: To determine the role of NSAIDs in activation of IBD.
Analytical Methods for Superresolution Dislocation Identification in Dark-Field X-ray Microscopy
Creators: name: Brennan, Michael C.
name: Howard, Marylesa
name: Marzouk, Youssef
name: Dresselhaus-Marais, Leora E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this work, we develop several inference methods to estimate the position of dislocations from images generated using dark-field X-ray microscopy (DFXM) -- achieving superresolution accuracy and principled uncertainty quantification. Using the framework of Bayesian inference, we incorporate models of the DFXM contrast mechanism and detector measurement noise, along with initial position estimates, into a statistical model coupling DFXM images with the dislocation position of interest. We motivate several position estimation and uncertainty quantification algorithms based on this model. We then demonstrate the accuracy of our primary estimation algorithm on synthetic realistic DFXM images of edge dislocations in single crystal aluminum. We conclude with a discussion of our methods' impact on future dislocation studies and possible future research avenues.
Braneworlds in $f(Q)$ gravity
Creators: name: Silva, J. E. G.
name: Maluf, R. V.
name: Olmo, Gonzalo J.
name: Almeida, C. A. S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a braneworld scenario in a modified symmetric teleparallel gravitational theory, where the dynamics for the gravitational field is encoded in the nonmetricity tensor rather than in the curvature. Assuming a single real scalar field with a sine-Gordon self-interaction, the generalized quadratic nonmetricity invariant $\mathbb{Q}$ controls the brane width while keeping the shape of the energy density. By considering power corrections of the invariant $\mathbb{Q}$ in the gravitational Lagrangian, the sine-Gordon potential is modified exhibiting new barriers and false vacuum. As a result, the domain wall brane obtains an inner structure, and it undergoes a splitting process. In addition, we also propose a non-minimal coupling between a bulk fermion field and the nonmetricity invariant $\mathbb{Q}$. Such geometric coupling leads to a massless chiral fermion bound to the 3-brane and a stable tower of non-localized massive states.
description: 26 pages, 16 figures
Optimization for Secure and Humane Border Operations
Creators: name: Farajzadeh, Fatemeh
name: Trapp, Andrew C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: In 2020 tens of millions of migrants worldwide sought safety due to various push-pull factors such as economic, geographic, demographic, and societal challenges. Large movements of human flows toward national borders constitute a complex humanitarian crisis that requires appropriate preparations of border resources. Motivated by prevailing national agenda issues for improved border support, we identify common operational challenges along the border and discuss how they can be addressed using advanced analytics. Multiple stakeholders, corresponding goals, and complex decisions call for advanced optimization techniques to holistically treat such challenges. This chapter highlights how optimization can be employed to improve both the security and humanitarian aspects of border operations in the context of migration flows.
description: submitted as a book chapter to Encyclopedia of Optimization (Springer)
Azathioprine and 6-Mercaptopurine-induced Liver Injury: Clinical Features and Outcomes
Creators: name: Hayashi, Paul H.
name: Chalasani, Naga
name: Hoofnagle, Jay H.
name: Kleiner, David E.
name: Björnsson, Einar S.
name: Gu, Jiezhun
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: To define the clinical, biochemical and histologic features of liver injury from thiopurines.
Long-term behaviour of asymptotically autonomous Hamiltonian systems with multiplicative noise
Creators: name: Sultanov, O. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 34F10, 93E15, 37J65

description: The influence of multiplicative stochastic perturbations on the class of asymptotically Hamiltonian systems on the plane is investigated. It is assumed that disturbances do not preserve the equilibrium of the corresponding limiting system and their intensity decays in time with power-law asymptotics. The paper discusses the long-term asymptotic behaviour of solutions and its dependence on the structure and parameters of perturbations. In particular, it is shown that perturbed trajectories can tend to the equilibrium of the limiting system or new stochastically stable states can arise. The proposed analysis is based on a combination of the averaging method and the construction of stochastic Lyapunov functions. The results obtained are applied to the problem of capture into parametric autoresonance in the presence of noise.
description: 27 pages, 9 figures. Fixed typos and some bugs. arXiv admin note: text overlap with arXiv:2112.00548
Hamiltonians for polaron models with subcritical ultraviolet singularities
Creators: name: Lampart, Jonas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We treat the ultraviolet problem for polaron-type models in nonrelativistic quantum field theory. Assuming that the dispersion relations of particles and the field have the same growth at infinity, we cover all subcritical (superrenormalisable) interactions. The Hamiltonian without cutoff is exhibited as an explicit self-adjoint operator obtained by a finite iteration procedure. The cutoff Hamiltonians converge to this operator in the strong resolvent sense after subtraction of a perturbative approximation for the ground-state energy.
Excitations of the ferroelectric order
Creators: name: Tang, Ping
name: Iguchi, Ryo
name: Uchida, Ken-ichi
name: Bauer, Gerrit E. W.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We identify the bosonic excitations in ferroelectrics that carry electric dipoles from the phenomenological Landau-Ginzburg-Devonshire theory. The "ferron" quasi-particles emerge from the concerted action of anharmonicity and broken inversion symmetry. In contrast to magnons, the transverse excitations of the magnetic order, the ferrons in displacive ferroelectrics are longitudinal with respect to the ferroelectric order. Based on the ferron spectrum, we predict temperature dependent pyroelectric and electrocaloric properties, electric-field-tunable heat and polarization transport, and ferron-photon hybridization.
Angular momentum of disc galaxies with a lognormal density distribution
Creators: name: Marr, John Herbert
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: By postulating that the majority of the mass and angular momentum of a disc galaxy is confined to the disc with a lognormal surface density distribution, and that galactic discs are substantially, if not fully, self-gravitating, it may be shown that the resultant rotation curves (RCs) display a good overall fit to observational data for a wide range of galaxy types. With this hypothesis, the total angular momentum $J$, and total energy |$E$| of 38 disc galaxies was computed and plotted against the derived disc masses, with best fit slopes for $J$ of $1.683\pm0.018$ and |$E$| of $1.643\pm0.038$, and a universal disc spin parameter $λ=0.423\pm0.014$. Using the disc parameters $V_{max}$ and $R_{max}$ as surrogates for the virial velocity and radius, a virial mass estimator $M_{disc}\propto{}R_{max}V_{max}^2$ was generated, with a log-log slope of $1.024\pm0.014$ for the 38 galaxies, and a proportionality constant $λ^*=1.47\pm0.20\times10^5M_\odot{}kpc^{-1}km^{-2}s^2$. This relationship has less scatter than $M_\odot\propto{}V^α$, and may provide an alternative to the Tully-Fisher relation in determining virial disc masses.
description: Submitted to MNRAS June 2015 Accepted for publication 27 July 2015 after minor changes and additional references
Trifolium michelianum Savi, Fl. Pis.
Creators: name: Peruzzi, Lorenzo
name: Galasso, Gabriele
name: Domina, Gianniantonio
name: Bartolucci, Fabrizio
name: Santangelo, Annalisa
name: Alessandrini, Alessandro
name: Astuti, Giovanni
name: D'Antraccoli, Marco
name: Roma-Marzio, Francesco
name: Ardenghi, Nicola M. G.
name: Barberis, Giuseppina
name: Conti, Fabio
name: Bernardo, Liliana
name: Peccenini, Simonetta
name: Stinca, Adriano
name: Wagensommer, Robert P.
name: Bonari, Gianmaria
name: Iamonico, Duilio
name: Iberite, Mauro
name: Viciani, Daniele
name: Guacchio, Emanuele Del
name: Galdo, Gianpietro Giusso Del
name: Lastrucci, Lorenzo
name: Villani, Mariacristina
name: Brunu, Antonello
name: Magrini, Sara
name: Pistarino, Annalaura
name: Brullo, Salvatore
name: Salmeri, Cristina
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Fabales
Fabaceae
Trifolium
Trifolium michelianum

description: Trifolium michelianum Savi, Fl. Pis. 2: 159(–160). 1798. [after 22 January 1798]
 Ind. Loc.:—“qui [Pisa] è comune nei prati inondati nell’Inverno” [“in pratis humidiusculis prope sylvam pisanam S. Rossoris”, after typification]. TOS
 Type (lectotype designated by Roma-Marzio et al. 2018: 414):— ITALY. Trifolium michelianum T. caule fistuloso, foliis obcordatis, calyc: postanthesin reflexis, siliquis dispermis. Trifoliastrum pratense corymbiferum, erectum, annuum et praealtum, caule crassiore fistuloso, folio longiore cordiformi, fte albo, siliqua incurva lata, compressa ac disperma Mich: tab: 25. fig. 2 Linnaeus figuram 2 at 6 tab: 25 conjungit. Sed Trif: fig: 6 siliquas 4 3-spermas habet, Trif: fig: 2 dispermas. Differentia in fructu nonne sufficiens erit caracter ad species distinguendos? Michel: reperit circa Bientinam in locis paludosis; Nos in pratis humidiusculis prope sylvam pisanam S. Rossoris, s.d., Savi s.n. (PI 003943).
 Compiled by:— M. D’Antraccoli
description: Published as part of Peruzzi, Lorenzo, Galasso, Gabriele, Domina, Gianniantonio, Bartolucci, Fabrizio, Santangelo, Annalisa, Alessandrini, Alessandro, Astuti, Giovanni, D'Antraccoli, Marco, Roma-Marzio, Francesco, Ardenghi, Nicola M. G., Barberis, Giuseppina, Conti, Fabio, Bernardo, Liliana, Peccenini, Simonetta, Stinca, Adriano, Wagensommer, Robert P., Bonari, Gianmaria, Iamonico, Duilio, Iberite, Mauro, Viciani, Daniele, Guacchio, Emanuele Del, Galdo, Gianpietro Giusso Del, Lastrucci, Lorenzo, Villani, Mariacristina, Brunu, Antonello, Magrini, Sara, Pistarino, Annalaura, Brullo, Salvatore & Salmeri, Cristina, 2019, An inventory of the names of native, non-endemic vascular plants described from Italy, their loci classici and types, pp. 1-215 in Phytotaxa 410 (1) on page 172, DOI: 10.11646/phytotaxa.410.1.1, http://zenodo.org/record/13716045
A global look into the world of interacting supernovae
Creators: name: Gangopadhyay, Anjasha
name: Misra, Kuntal
name: Kawabata, Koji
name: Dastidar, Raya
name: Singh, Mridweeka
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Interacting supernovae (SNe) IIn and Ibn show narrow emission lines and have always been a mysterious and unsolved genre in SNe physics. We present a comprehensive analysis of the temporal and spectroscopic behaviour of a group of interacting SNe~IIn and Ibn. We choose SNe~2012ab, 2020cui, 2020rc and 2019uo as representative members of these SN sub-types to probe the nature of explosion. Our study reveals that SNe~IIn are heterogeneous, bright depicting multi-staged temporal evolution while SNe~Ibn are moreover homogeneous, comparatively fainter than SNe~IIn and short lived, but limited in sample to firmly constrain the homogeneity. The spectroscopic features display a great diversity in H$α$ and He profiles for both SNe~IIn and Ibn. The representative SN~Ibn also show flash ionisation signatures of CIII and NIII. Modelling of H$α$ reveals that SNe~IIn have in general an asymmetric CSM which interacts with SN ejecta resulting in diversity in H$α$ profiles.
description: 9 pages, 8 figures, Accepted for Special Issue of Journal of Astrophysics and Astronomy, 2022, Astrophysical jets and observational facilities: National perspective, 05 -09 April 2021, ARIES Nainital
Dynamical Evolution of Multi-Resonant Systems: the Case of GJ876
Creators: name: Batygin, Konstantin
name: Deck, Katherine M.
name: Holman, Matthew J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Dynamical Systems (math.DS)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The GJ876 system was among the earliest multi-planetary detections outside of the Solar System, and has long been known to harbor a resonant pair of giant planets. Subsequent characterization of the system revealed the presence of an additional Neptune mass object on an external orbit, locked in a three body Laplace mean motion resonance with the previously known planets. While this system is currently the only known extrasolar example of a Laplace resonance, it differs from the Galilean satellites in that the orbital motion of the planets is known to be chaotic. In this work, we present a simple perturbative model that illuminates the origins of stochasticity inherent to this system and derive analytic estimates of the Lyapunov time as well as the chaotic diffusion coefficient. We then address the formation of the multi-resonant structure within a protoplanetary disk and show that modest turbulent forcing in addition to dissipative effects is required to reproduce the observed chaotic configuration. Accordingly, this work places important constraints on the typical formation environments of planetary systems and informs the attributes of representative orbital architectures that arise from extended disk-driven evolution.
description: 15 pages, 7 figures, accepted to AJ
Existence, structure, and robustness of ground states of a NLSE in 3D with a point defect
Creators: name: Adami, Riccardo
name: Boni, Filippo
name: Carlone, Raffaele
name: Tentarelli, Lorenzo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35Q40, 35Q55, 35B07, 35B09, 35R99, 49J40, 49N15

description: We study the ground states for the Schrödinger equation with a focusing nonlinearity and a point interaction in dimension three. We establish that ground states exist for every value of the mass; moreover they are positive, radially symmetric, decreasing along the radial direction, and show a Coulombian singularity at the location of the point interaction. Remarkably, the existence of the ground states is independent of the attractive or repulsive character of the point interaction.
description: 17 pages. Keywords: standing waves, nonlinear Schr\"odinger, ground states, delta interaction, radially symmetric solutions, rearrangements. Accepted for publication in the Special Collection on the Proceedings of ICMP XX and in a regular issue of Journal of Mathematical Physics. arXiv admin note: text overlap with arXiv:2109.09482
Fluid flow at interfaces driven by thermal gradients
Creators: name: Anzini, Pietro
name: Filiberti, Zeno
name: Parola, Alberto
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Thermal forces drive several nonequilibrium phenomena able to set a fluid in motion without pressure gradients. Although the most celebrated effect is thermophoresis, also known as Ludwig-Soret effect, probably the simplest example where thermal forces are at play is thermo-osmosis: The motion of a {\it confined} fluid exclusively due to the presence of a temperature gradient. We present a concise but complete derivation of the microscopic theory of thermo-osmosis based on linear response theory. This approach is applied to a simple fluid confined in a slab geometry, mimicking the flow through a pore in a membrane separating two fluid reservoirs at different temperatures. We consider both the case of an open channel, where the fluid can flow freely, and that of a closed channel, where mass transport is inhibited and a pressure drop sets in at the boundaries. Quantitative results require the evaluation of generalized transport coefficients, but a preliminary check on a specific prediction of the theory has been successfully performed via nonequilibrium molecular dynamics simulations.
description: 14 pages, 5 figures