cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Effects of adaptive acceleration response of birds on collective behaviors
Creators: name: Jung, Narina
name: Weon, Byung Mook
name: Kim, Pilwon
Publisher: name: arXiv
Year: 2019
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: Collective dynamics of many interacting particles have been widely studied because of a wealth of their behavioral patterns quite different from the individual traits. A selective way of birds that reacts to their neighbors is one of the main factors characterizing the collective behaviors. Individual birds can react differently depending on their local environment during the collective decision-making process, and these variable reactions can be a source of complex spatiotemporal flocking dynamics. Here, we extend the deterministic Cucker-Smale model by including the individual's reaction to neighbors' acceleration where the reaction time depends on the local state of polarity. Simulation results show that the adaptive reaction of individuals induces the collective response of the flock. Birds are not frozen in a complete synchronization but remain sensitive to perturbations coming from environments. We confirm that the adaptivity of the reaction also generates natural fluctuations of orientation and speed, both of which are indeed scale-free as experimentally reported. This work may provide essential insight in designing resilient systems of many active agents working in complex, unpredictable environments.
title: 01_0702
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Perspektiven auf die Potenziale von OER an Hochschulen
Creators: name: Waag, Anne-Sophie
Publisher: name: Zenodo
Year: 2020
Subjects: Open Educational Resources
Hochschulen

description: Kurze Präsentation über die Potenziale von Open Educational Resources an Hochschulen. Lehrbeispiel aus der Lehramtsausbildung. Visionen für mehr OER und OEP an Hochschulen.
Invertibility of frame operators on Besov-type decomposition spaces
Creators: name: Romero, José Luis
name: van Velthoven, Jordy Timo
name: Voigtlaender, Felix
Publisher: name: arXiv
Year: 2019
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 42B35, 42C15, 42C40

description: We derive an extension of the Walnut-Daubechies criterion for the invertibility of frame operators. The criterion concerns general reproducing systems and Besov-type spaces. As an application, we conclude that $L^2$ frame expansions associated with smooth and fast-decaying reproducing systems on sufficiently fine lattices extend to Besov-type spaces. This simplifies and improves recent results on the existence of atomic decompositions, which only provide a particular dual reproducing system with suitable properties. In contrast, we conclude that the $L^2$ canonical frame expansions extend to many other function spaces, and, therefore, operations such as analyzing using the frame, thresholding the resulting coefficients, and then synthesizing using the canonical dual frame are bounded on these spaces.
The REASONS Survey: Resolved Millimeter Observations of a Large Debris Disk Around the Nearby F Star HD 170773
Creators: name: Sepulveda, Aldo G.
name: Matra, Luca
name: Kennedy, Grant M.
name: del Burgo, Carlos
name: Oberg, Karin I.
name: Wilner, David J.
name: Marino, Sebastian
name: Booth, Mark
name: Carpenter, John M.
name: Davies, Claire L.
name: Dent, William R. F.
name: Ertel, Steve
name: Lestrade, Jean-Francois
name: Marshall, Jonathan P.
name: Milli, Julien
name: Wyatt, Mark C.
name: MacGregor, Meredith A.
name: Matthews, Brenda C.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Debris disks are extrasolar analogs to our own Kuiper Belt and they are detected around at least 17% of nearby Sun-like stars. The morphology and dynamics of a disk encode information about its history, as well as that of any exoplanets within the system. We used ALMA to obtain 1.3 mm observations of the debris disk around the nearby F5V star HD 170773. We image the face-on ring and determine its fundamental parameters by forward-modeling the interferometric visibilities through a Markov Chain Monte Carlo approach. Using a symmetric Gaussian surface density profile, we find a 71 $\pm$ 4 au wide belt with a radius of 193$^{+2}_{-3}$ au, a relatively large radius compared to most other millimeter-resolved belts around late A / early F type stars. This makes HD 170773 part of a group of four disks around A and F stars with radii larger than expected from the recently reported planetesimal belt radius - stellar luminosity relation. Two of these systems are known to host directly imaged giant planets, which may point to a connection between large belts and the presence of long-period giant planets. We also set upper limits on the presence of CO and CN gas in the system, which imply that the exocomets that constitute this belt have CO and HCN ice mass fractions of <77% and <3%, respectively, consistent with Solar System comets and other exocometary belts.
description: 14 pages, 6 figures, accepted to ApJ
Balian-Low type theorems on homogeneous groups
Creators: name: Gröchenig, Karlheinz
name: Romero, José Luis
name: Rottensteiner, David
name: van Velthoven, Jordy Timo
Publisher: name: arXiv
Year: 2019
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 22E25, 22E27, 42C15, 42C40

description: We prove strict necessary density conditions for coherent frames and Riesz sequences on homogeneous groups. Let $N$ be a connected, simply connected nilpotent Lie group with a dilation structure (a homogeneous group) and let $(π, \mathcal{H}_π)$ be an irreducible, square-integrable representation modulo the center $Z(N)$ of $N$ on a Hilbert space $\mathcal{H}_π$ of formal dimension $d_π$. If $g \in \mathcal{H}_π$ is an integrable vector and the set $\{ π(λ)g : λ\in Λ\}$ for a discrete subset $Λ\subseteq N / Z(N)$ forms a frame for $\mathcal{H}_π$, then its density satisfies the strict inequality $D^-(Λ)> d_π$, where $D^-(Λ)$ is the lower Beurling density. An analogous density condition $D^+(Λ) < d_π$ holds for a Riesz sequence in $\mathcal{H}_π$ contained in the orbit of $(π, \mathcal{H}_π)$. The proof is based on a deformation theorem for coherent systems, a universality result for $p$-frames and $p$-Riesz sequences, some results from Banach space theory, and tools from the analysis on homogeneous groups.
Minimal index and dimension for inclusions of von Neumann algebras with finite-dimensional centers
Creators: name: Giorgetti, Luca
Publisher: name: arXiv
Year: 2019
Subjects: subject: Operator Algebras (math.OA)
subject: Mathematical Physics (math-ph)
subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The notion of index for inclusions of von Neumann algebras goes back to a seminal work of Jones on subfactors of type ${I\!I}_1$. In the absence of a trace, one can still define the index of a conditional expectation associated to a subfactor and look for expectations that minimize the index. This value is called the minimal index of the subfactor. We report on our analysis, contained in [GL19], of the minimal index for inclusions of arbitrary von Neumann algebras (not necessarily finite, nor factorial) with finite-dimensional centers. Our results generalize some aspects of the Jones index for multi-matrix inclusions (finite direct sums of matrix algebras), e.g., the minimal index always equals the squared norm of a matrix, that we call \emph{matrix dimension}, as it is the case for multi-matrices with respect to the Bratteli inclusion matrix. We also mention how the theory of minimal index can be formulated in the purely algebraic context of rigid 2-$C^*$-categories.
description: Invited contribution to the Proceedings of the 27th International Conference in Operator Theory (OT27), Timi\c{s}oara, 2018
On Transformations of Markov Chains and Poisson Boundary
Creators: name: Ben-Ari, Iddo
name: Forghani, Behrang
Publisher: name: arXiv
Year: 2019
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60J10, 31C05, 31C35

description: A discrete-time Markov chain can be transformed into a new Markov chain by looking at its states along iterations of an almost surely finite stopping time. By the optional stopping theorem, any bounded harmonic function with respect to the transition function of the original chain is harmonic with respect to the transition function of the transformed chain. The reverse inclusion is in general not true. Our main result provides a sufficient condition on the stopping time which guarantees that the space of bounded harmonic functions for the transformed chain embeds in the space of bounded harmonic sequences for the original chain. We also obtain a similar result on positive unbounded harmonic functions, under some additional conditions. Our work was motivated by and is analogous to Forghani-Kaimanovich, the well-studied case when the Markov chain is a random walk on a discrete group.
Graph modification for edge-coloured and signed graph homomorphism problems: parameterized and classical complexity
Creators: name: Foucaud, Florent
name: Hocquard, Hervé
name: Lajou, Dimitri
name: Mitsou, Valia
name: Pierron, Théo
Publisher: name: arXiv
Year: 2019
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences

description: We study the complexity of graph modification problems with respect to homomorphism-based colouring properties of edge-coloured graphs. A homomorphism from edge-coloured graph $G$ to edge-coloured graph $H$ is a vertex-mapping from $G$ to $H$ that preserves adjacencies and edge-colours. We consider the property of having a homomorphism to a fixed edge-coloured graph $H$. The question we are interested in is: given an edge-coloured graph $G$, can we perform $k$ graph operations so that the resulting graph admits a homomorphism to $H$? The operations we consider are vertex-deletion, edge-deletion and switching (an operation that permutes the colours of the edges incident to a given vertex). Switching plays an important role in the theory of signed graphs, that are 2-edge-coloured graphs whose colours are the signs $+$ and $-$. We denote the corresponding problems (parameterized by $k$) by VD-$H$-COLOURING, ED-$H$-COLOURING and SW-$H$-COLOURING. These problems generalise $H$-COLOURING (to decide if an input graph admits a homomorphism to a fixed target $H$). Our main focus is when $H$ is an edge-coloured graph with at most two vertices, a case that is already interesting as it includes problems such as VERTEX COVER, ODD CYCLE RANSVERSAL and EDGE BIPARTIZATION. For such a graph $H$, we give a P/NP-c complexity dichotomy for VD-$H$-COLOURING, ED-$H$-COLOURING and SW-$H$-COLOURING. We then address their parameterized complexity. We show that VD-$H$-COLOURING and ED-$H$-COLOURING for all such $H$ are FPT. In contrast, already for some $H$ of order 3, unless P=NP, none of the three problems is in XP, since 3-COLOURING is NP-c. We show that SW-$H$-COLOURING is different: there are three 2-edge-coloured graphs $H$ of order 2 for which SW-$H$-COLOURING is W-hard, and assuming the ETH, admits no algorithm in time $f(k)n^{o(k)}$. For the other cases, SW-$H$-COLOURING is FPT.
description: 17 pages, 9 figures, 2 tables
ПРОФИЛАКТИКА ИНСПЕКТОРИНИНГ ДАВЛАТ ХАВФСИЗЛИГИГА ҚАРШИ ҚАРАТИЛГАН ҲУҚУҚБУЗАРЛИКЛАР БЎЙИЧА ДАВЛАТ ОРГАНЛАРИ ВА ЖАМОАТ ТАШКИЛОТЛАРИ БИЛАН ЎЗАРО ҲАМКОРЛИГИ
Creators: name: Нарзиев, Шахзодбек
name: Ҳайдарова, Зебохон
Publisher: name: Zenodo
Year: 2024

description: Ушбу мақолада профилактика инспекторларининг давлат хавфсизлигига қарши қаратилган ҳуқуқбузарликларни олдини олишдаги роли, шунингдек, давлат органлари ва жамоат ташкилотлари билан ҳамкорлигининг аҳамияти чуқур таҳлил қилинади. Профилактика инспекторлари, ўз фаолиятлари доирасида, жиноятчилик ва хавфсизлик таҳдидларини олдини олиш, шунингдек, ижтимоий муаммоларни аниқлаш ва ҳал этишда муҳим аҳамиятга эга фаолиятларида давлат хавфсизлигини таъминлаш ва жамоат тартибини сақлаш учун турли методологиялари, шунингдек, давлат органлари ва жамоат ташкилотлари ўртасидаги ҳамкорлик механизмлари кўриб чиқилади.
Efficient computation of bifurcation diagrams with a deflated approach to reduced basis spectral element method
Creators: name: Pintore, Moreno
name: Pichi, Federico
name: Hess, Martin
name: Rozza, Gianluigi
name: Canuto, Claudio
Publisher: name: arXiv
Year: 2019
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 35B60, 35Q35, 37M20, 76E30, 76M22

description: The majority of the most common physical phenomena can be described using partial differential equations (PDEs). However, they are very often characterized by strong nonlinearities. Such features lead to the coexistence of multiple solutions studied by the bifurcation theory. Unfortunately, in practical scenarios, one has to exploit numerical methods to compute the solutions of systems of PDEs, even if the classical techniques are usually able to compute only a single solution for any value of a parameter when more branches exist. In this work we implemented an elaborated deflated continuation method, that relies on the spectral element method (SEM) and on the reduced basis (RB) one, to efficiently compute bifurcation diagrams with more parameters and more bifurcation points. The deflated continuation method can be obtained combining the classical continuation method and the deflation one: the former is used to entirely track each known branch of the diagram, while the latter is exploited to discover the new ones. Finally, when more than one parameter is considered, the efficiency of the computation is ensured by the fact that the diagrams can be computed during the online phase while, during the offline one, one only has to compute one-dimensional diagrams. In this work, after a more detailed description of the method, we will show the results that can be obtained using it to compute a bifurcation diagram associated with a problem governed by the Navier-Stokes equations.
description: 26 pages, 30 figures
Artifcial-intelligence-driven discovery of catalyst \textit{genes} with application to CO2 activation on semiconductor oxides
Creators: name: Mazheika, Aliaksei
name: Wang, Yanggang
name: Valero, Rosendo
name: Ghiringhelli, Luca M.
name: Vines, Francesc
name: Illas, Francesc
name: Levchenko, Sergey V.
name: Scheffler, Matthias
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Catalytic-materials design requires predictive modeling of the interaction between catalyst and reactants. This is challenging due to the complexity and diversity of structure-property relationships across the chemical space. Here, we report a strategy for a rational design of catalytic materials using the artifcial intelligence approach (AI) subgroup discovery. We identify catalyst \textit{genes} (features) that correlate with mechanisms that trigger, facilitate, or hinder the activation of carbon dioxide (CO$_2$) towards a chemical conversion. The AI model is trained on frst-principles data for a broad family of oxides. We demonstrate that surfaces of experimentally identifed good catalysts consistently exhibit combinations of \textit{genes} resulting in a strong elongation of a C-O bond. The same combinations of \textit{genes} also minimize the OCO-angle, the previously proposed indicator of activation, albeit under the constraint that the Sabatier principle is satisfed. Based on these fndings, we propose a set of new promising catalyst materials for CO$_2$ conversion.
How do they do that? : what can we learn from Everett, Washington about improving quality and outcomes without increasing costs?
Creators: name: McGrail, Kimberlyn M.
Publisher: name: Centre for Health Services and Policy Research (CHSPR)
Year: 2014

description: The purpose of this paper is to describe an in-depth case study of the Everett HRR. The intent of this case study was to gather more information about how this region operates, and more particularly, what has contributed to its status as a lower cost and higher quality region in the United States.
title: 01_2552
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Educators’ intentions for learning in Virtual School Garden Exchanges: a comparison with the aims of Education for Sustainable Development
Creators: name: Lochner, Johanna
Publisher: name: Humboldt-Universität zu Berlin
Year: 2021
Subjects: subject: School gardens
subject: virtual exchanges
subject: Education for Sustainable Development
subject: learning outcomes
subject: educators’ perspectives
subject: 370 Bildung und Erziehung

description: It is widely recognized that education plays a key role in addressing current global challenges. Education for Sustainable Development (ESD) combines local actions with global thinking. In Virtual School Garden Exchanges (VSGEs) primary and secondary students from the Global South and North interact and communicate digitally about their school gardens. This study focuses on educators’ expectations regarding learning outcomes of VSGEs and possible parallels with ESD and Virtual Exchanges (VEs) in general. A qualitative content analysis of 23 semi-structured interviews with educators engaged in 18 VSGEs was conducted. Even though the VSGEs took different individual approaches, the analysis revealed many commonalities in the respondents’ intentions: amongst other things, educators were aiming to promote knowledge about gardening and food, horticultural and cooperation competencies, and values such as solidarity. Nevertheless, some educators feared that VSGEs might also have some negative effects. The results show parallels with the aims of ESD and VEs.
On dual molecules and convolution-dominated operators
Creators: name: Romero, José Luis
name: van Velthoven, Jordy Timo
name: Voigtlaender, Felix
Publisher: name: arXiv
Year: 2020
Subjects: subject: Functional Analysis (math.FA)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 22A10, 42C15, 42C40, 43A15, 46E22

description: We show that sampling or interpolation formulas in reproducing kernel Hilbert spaces can be obtained by reproducing kernels whose dual systems form molecules, ensuring that the size profile of a function is fully reflected by the size profile of its sampled values. The main tool is a local holomorphic calculus for convolution-dominated operators, valid for groups with possibly non-polynomial growth. Applied to the matrix coefficients of a group representation, our methods improve on classical results on atomic decompositions and bridge a gap between abstract and concrete methods.
title: 01_2264
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Novel beamline for attosecond transient reflection spectroscopy in a sequential two-foci geometry
Creators: name: Lucarelli, Giacinto D.
name: Moio, Bruno
name: Inzani, Giacomo
name: Fabris, Nicola
name: Moscardi, Liliana
name: Frassetto, Fabio
name: Poletto, Luca
name: Nisoli, Mauro
name: Lucchini, Matteo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present an innovative beamline for extreme ultraviolet (XUV)-infrared (IR) pump-probe reflection spectroscopy in solids with attosecond temporal resolution. The setup uses an actively stabilized interferometer, where attosecond pulse trains or isolated attosecond pulses are produced by high-order harmonic generation in gases. After collinear recombination, the attosecond XUV pulses and the femtosecond IR pulses are focused twice in sequence by toroidal mirrors, giving two spatially separated interaction regions. In the first region, the combination of a gas target with a time-of-flight spectrometer allows for attosecond photoelectron spectroscopy experiments. In the second focal region, an XUV reflectometer is used for attosecond transient reflection spectroscopy (ATRS) experiments. Since the two measurements can be performed simultaneously, precise pump-probe delay calibration can be achieved, thus opening the possibility for a new class of attosecond experiments on solids. Successful operation of the beamline is demonstrated by the generation and characterization of isolated attosecond pulses, the measurement of the absolute reflectivity of SiO2, and by performing simultaneous photoemission/ATRS in Ge.
description: 18 pages, 9 figures
Accurate Machine Learning Atmospheric Retrieval via a Neural Network Surrogate Model for Radiative Transfer
Creators: name: Himes, Michael D.
name: Harrington, Joseph
name: Cobb, Adam D.
name: Baydin, Atilim Gunes
name: Soboczenski, Frank
name: O'Beirne, Molly D.
name: Zorzan, Simone
name: Wright, David C.
name: Scheffer, Zacchaeus
name: Domagal-Goldman, Shawn D.
name: Arney, Giada N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Atmospheric retrieval determines the properties of an atmosphere based on its measured spectrum. The low signal-to-noise ratio of exoplanet observations require a Bayesian approach to determine posterior probability distributions of each model parameter, given observed spectra. This inference is computationally expensive, as it requires many executions of a costly radiative transfer (RT) simulation for each set of sampled model parameters. Machine learning (ML) has recently been shown to provide a significant reduction in runtime for retrievals, mainly by training inverse ML models that predict parameter distributions, given observed spectra, albeit with reduced posterior accuracy. Here we present a novel approach to retrieval by training a forward ML surrogate model that predicts spectra given model parameters, providing a fast approximate RT simulation that can be used in a conventional Bayesian retrieval framework without significant loss of accuracy. We demonstrate our method on the emission spectrum of HD 189733 b and find good agreement with a traditional retrieval from the Bayesian Atmospheric Radiative Transfer (BART) code (Bhattacharyya coefficients of 0.9843--0.9972, with a mean of 0.9925, between 1D marginalized posteriors). This accuracy comes while still offering significant speed enhancements over traditional RT, albeit not as much as ML methods with lower posterior accuracy. Our method is ~9x faster per parallel chain than BART when run on an AMD EPYC 7402P central processing unit (CPU). Neural-network computation using an NVIDIA Titan Xp graphics processing unit is 90--180x faster per chain than BART on that CPU.
description: 16 pages, 4 figures, submitted to PSJ 3/4/2020, revised 1/22/2021, accepted 2/4/2021, published 4/25/2022. Updated to match the published manuscript. Himes et al. 2022, PSJ, 3, 91
Structural and morphological studies (XRD spectra, FESEM images and EDS elemental mapping), thickness dependent capacitive response, sensor response to relative humidity change, selectivity test for oral and nasal breath, repeatability, algorithm for wireless monitoring. from Nanostructured NiS2 based Flexible Smart Sensors for Human Respiration Monitoring
Creators: name: Gurnani, Chitra
name: Desai, Trishala
name: Gupta, Aashi
Publisher: name: The Royal Society
Year: 2024
Subjects: classificationCode: 340299
subject: Inorganic chemistry not elsewhere classified

description: Supplementary Material.docx
Manuscript for paper on implementation of new phase elements in TEM
Creators: name: Grillo, Vincenzo
name: Frabboni, Stefano
name: Tavabi, Amir
name: Rosi, Paolo
name: Lu, Peng Han
name: Karimi, Ebrahim
name: Pozzi, Giulio
name: Dunin Borkowski, Rafal
name: Roncaglia, Alberto
name: Tiemeijer
Publisher: name: Zenodo
Year: 2020
Subjects: Q-sort

description: This deliverable is the final result of WP2 marking the realization of a working sorter device. The
 completion of this device marks the realization of Milestone M6 and the progress in the
 realization of WP4 and part of WP5.
 The deliverable is written in the form of paper describing the main results.
 The main part of the text of the paper is divided in Introduction, Experimental setup, Sorter in
 practice, results, Effect of the astigmatism correction electrodes, Phase of sorter 2, conclusions.
 The main aim of the first 3 sections is to explain the setup of the sorter and its working mode.
 The second part is instead concentrated on what can be still improved or anyway important
 details that really matter for the final resolution of the device.
 In addition we added a large supplementary section partially copied by the previous deliverable.
 This material would be strongly necessary as the paper is now very technical
 Finally we added the comment of two internal reviewer and our response to that.
Creating National Air Pollution Models for Population Exposure Assessment in Canada
Creators: name: Hystad, Perry
name: Setton, Eleanor
name: Cervantes, Alejandro
name: Poplawski, Karla
name: Deschenes, Steeve
name: Brauer, Michael (Of University Of British Columbia)
name: Van Donkelaar, Aaron
name: Lamsal, Lok
name: Martin, Randall
name: Jerrett, Michael
name: Demers, Paul
Publisher: name: The University of British Columbia
Year: 2015

description: Background: Population exposure assessment methods that capture local-scale pollutant variability are needed for large-scale epidemiological studies and surveillance, policy, and regulatory purposes. Currently, such exposure methods are limited. Methods: We created 2006 national pollutant models for fine particulate matter [PM with aerodynamic diameter ≤ 2.5 μm (PM₂.₅)], nitrogen dioxide (NO₂), benzene, ethylbenzene, and 1,3‑butadiene from routinely collected fixed-site monitoring data in Canada. In multiple regression models, we incorporated satellite estimates and geographic predictor variables to capture background and regional pollutant variation and used deterministic gradients to capture local-scale variation. The national NO₂ and benzene models are evaluated with independent measurements from previous land use regression models that were conducted in seven Canadian cities. National models are applied to census block-face points, each of which represents the location of approximately 89 individuals, to produce estimates of population exposure. Results: The national NO₂ model explained 73% of the variability in fixed-site monitor concentrations, PM₂.₅ 46%, benzene 62%, ethylbenzene 67%, and 1,3-butadiene 68%. The NO₂ model predicted, on average, 43% of the within-city variability in the independent NO₂ data compared with 18% when using inverse distance weighting of fixed-site monitoring data. Benzene models performed poorly in predicting within-city benzene variability. Based on our national models, we estimated Canadian ambient annual average population-weighted exposures (in micrograms per cubic meter) of 8.39 for PM₂.₅, 23.37 for NO₂, 1.04 for benzene, 0.63 for ethylbenzene, and 0.09 for 1,3-butadiene. Conclusions: The national pollutant models created here improve exposure assessment compared with traditional monitor-based approaches by capturing both regional and local-scale pollution variation. Applying national models to routinely collected population location data can extend land use modeling techniques to population exposure assessment and to informing surveillance, policy, and regulation.
On a Conjecture of Kelly on $(1,3)$-representation of Sylvester Gallai Designs
Creators: name: Kumar, C P Anil
name: Singh, Anoop
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: Primary 51A20, Secondary 51A45

description: We give an exact criterion of a conjecture of L.M.Kelly to hold true which is stated as follows. If there is a finite family $Σ$ of mutually skew lines in $\mathbb{R}^l,l\geq 4$ such that the three dimensional affine span (hull) of every two lines in $Σ$, contains at least one more line of $Σ$, then we have that $Σ$ is entirely contained in a three dimensional space if and only if the arrangement of affine hulls is central. Finally, this article leads to an analogous question for higher dimensional skew affine spaces, that is, for $(2,5)$-representations of sylvester-gallai designs in $\mathbb{R}^6$, which is answered in the last section.
description: 13 pages
Clinical Hypertension Pearls from The Cochrane Library
Creators: name: Therapeutics Initiative (University Of British Columbia)
Publisher: name: The University of British Columbia
Year: 2023

description: Therapeutics Letter 82 highlights five Cochrane systematic reviews about hypertension, which provide clear clinical evidence to direct patient care. Interventions reviewed include relaxation therapies, beta blockers, calcium channel blockers, first-line treatments, and appropriate blood pressure targets.
Boson and neutron stars with increased density
Creators: name: Brihaye, Y.
name: Ducobu, L.
name: Hartmann, B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss boson stars and neutron stars, respectively, in a scalar-tensor gravity model with an explicitly time-dependent real scalar field. While the boson stars in our model -- in contrast to the neutron stars -- do not possess a hard core, we find that the qualitative effects of the formation of scalar hair are similar in both cases : the presence of the gravity scalar allows both type of stars to exist for larger central density as well as larger mass at given radius than their General Relativity counterparts. In particular, we find new types of neutron stars with scalar hair which have radii very close to the corresponding Schwarzschild radius and hence are comparable in density to black holes. This new branch of solutions is stable with respect to the decay into individual baryons.
description: Matches version published in Phys. Lett. B
Erfassung der SARS-CoV-2-Testzahlen in Deutschland (Update vom 20.5.2020)
Creators: name: Koch-Institut, Robert
Publisher: name: Robert Koch-Institut
Year: 2020
Subjects: subject: SARS-CoV-2
subject: COVID-19-Pandemie
subject: 610 Medizin und Gesundheit

description: Im Rahmen der COVID-19-Pandemie spielt die Labordiagnostik zu SARS-CoV-2 eine entscheidende Rolle. Daten zur Anzahl der durchgeführten Testungen zu SARS-CoV-2 sowie zur Anzahl der Personen mit den jeweiligen Testergebnissen und den Testkapazitäten werden aktuell über verschiedene Netzwerke bzw. Umfragen erhoben. Im Epidemiologischen Bulletin 21/2020 erfolgt ein Update gegenüber Ausgabe 20/2020.
On the strength of general polynomials
Creators: name: Bik, Arthur
name: Oneto, Alessandro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 13A02, 13D02, 13D40, 14N05, 14N15

description: A slice decomposition is an expression of a homogeneous polynomial as a sum of forms with a linear factor. A strength decomposition is an expression of a homogeneous polynomial as a sum of reducible forms. The slice rank and strength of a polynomial are the minimal lengths of such decompositions, respectively. The slice rank is an upper bound for the strength and the gap between these two values can be arbitrary large. However, in line with a conjecture by Catalisano et al. on the dimensions of secant varieties of the varieties of reducible forms, we conjecture that equality holds for general forms. By using a weaker version of Fröberg's Conjecture on the Hilbert series of ideals generated by general forms, we show that our conjecture holds up to degree $7$ and in degree $9$.
description: 19 pages, final revision
The hidden waves in the ECG uncovered: a sound automated interpretation method
Creators: name: Rueda, Cristina
name: Larriba, Yolanda
name: Lamela, Adrián
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: Signal Processing (eess.SP)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: A novel approach for analysing cardiac rhythm data is presented in this paper. Heartbeats are decomposed into the five fundamental $P$, $Q$, $R$, $S$ and $T$ waves plus an error term to account for artefacts in the data which provides a meaningful, physical interpretation of the heart's electric system. The morphology of each wave is concisely described using four parameters that allow to all the different patterns in heartbeats be characterized and thus differentiated This multi-purpose approach solves such questions as the extraction of interpretable features, the detection of the fiducial marks of the fundamental waves, or the generation of synthetic data and the denoising of signals. Yet, the greatest benefit from this new discovery will be the automatic diagnosis of heart anomalies as well as other clinical uses with great advantages compared to the rigid, vulnerable and black box machine learning procedures, widely used in medical devices. The paper shows the enormous potential of the method in practice; specifically, the capability to discriminate subjects, characterize morphologies and detect the fiducial marks (reference points) are validated numerically using simulated and real data, thus proving that it outperforms its competitors.
Unravelling the intertwined atomic and bulk nature of localised excitons by attosecond spectroscopy
Creators: name: Lucchini, Matteo
name: Sato, Shunsuke A.
name: Lucarelli, Giacinto D.
name: Moio, Bruno
name: Inzani, Giacomo
name: Borrego-Varillas, Rocío
name: Frassetto, Fabio
name: Poletto, Luca
name: Hübener, Hannes
name: De Giovannini, Umberto
name: Rubio, Angel
name: Nisoli, Mauro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The electro-optical properties of most semiconductors and insulators of technological interest are dominated by the presence of electron-hole quasiparticles called excitons. The manipulation of these hydrogen-like quasi-particles in dielectrics, has received great interest under the name excitonics that is expected to be of great potential for a variety of applications, including optoelectronics and photonics. A crucial step for such exploitation of excitons in advanced technological applications is a detailed understanding of their dynamical nature. However, the ultrafast processes unfolding on few-femtosecond and attosecond time scales, of primary relevance in view of the desired extension of electronic devices towards the petahertz regime, remain largely unexplored. Here we apply attosecond transient reflection spectroscopy in a sequential two-foci geometry and observe sub-femtosecond dynamics of a core-level exciton in bulk MgF$_2$ single crystals. With our unique setup, we can access absolute phase delays which allow for an unambiguous comparison with theoretical calculations based on the Wannier-Mott model. Our results show that excitons surprisingly exhibit a dual atomic- and solid-like character which manifests itself on different time scales. While the former is responsible for a femtosecond optical Stark effect, the latter dominates the attosecond excitonic response and originates by the interaction with the crystal. Further investigation of the role of exciton localization proves that the bulk character persists also for strongly localised quasi-particles and allows us to envision a new route to control exciton dynamics in the close-to-petahertz regime.
Quantum Immortality and Non-Classical Logic
Creators: name: Wilson, Phillip L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: History and Overview (math.HO)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The Everett Box is a device in which an observer and a lethal quantum apparatus are isolated from the rest of the universe. On a regular basis, successive trials occur, in each of which an automatic measurement of a quantum superposition inside the apparatus either causes instant death or does nothing to the observer. From the observer's perspective, the chances of surviving $m$ trials monotonically decreases with increasing $m$. As a result, if the observer is still alive for sufficiently large $m$ she must reject any interpretation of quantum mechanics which is not the many-worlds interpretation (MWI), since surviving $m$ trials becomes vanishingly unlikely in a single world, whereas a version of the observer will necessarily survive in the branching MWI universe. Here we ask whether this conclusion still holds if rather than a classical understanding of limits built on classical logic we instead require our physics to satisfy a computability requirement by investigating the Everett Box in a model of a computational universe running on a variety of constructive logic, Recursive Constructive Mathematics. We show that although the standard Everett argument rejecting non-MWI interpretations is no longer valid, we can show that Everett's conclusion still holds within a computable universe. Thus we argue that Everett's argument is strengthened and any counter-argument must be strengthened, since it holds not only in classical logic (with embedded notions of continuity and infinity) but also in a computable logic.
description: 14 pages
Η επίδραση της αντίστροφης εφοδιαστικής στην ικανοποίηση των πελατών
Creators: name: Κατραντζίδου Καλογιάννη, Βασιλική Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Αντίστροφη εφοδιαστική
Iκανοποίηση πελατών
Αφοσίωση πελατών
Reverse logistics
Customer satisfaction
Customer loyalty

description: Σκοπός της διατριβής ήταν η μελέτη της συσχέτισης και της σπουδαιότητας της ικανοποίησης των πελατών κατά την διαδικασία της αντίστροφης εφοδιαστικής αλυσίδας. Αναλύσαμε την έννοιας της ικανοποίησης των πελατών και της αντίστροφης εφοδιαστικής αλυσίδας. Στη συνέχεια ερευνήσαμε την επίδραση της αντίστροφης εφοδιαστικής αλυσίδας στην ικανοποίηση των πελατών. Επιπλέον, διεξήγαμε μια έρευνα για εκτιμήσουμε την επίδραση των επιστροφών των προϊόντων στους πελάτες που επηρεάζει ορισμένους δείκτες του marketing. Τα δεδομένα αυτής της έρευνας συλλέχθηκαν μέσω μελέτης των πελατών της Skroutz , χρησιμοποιώντας ένα ερωτηματολόγιο και η ανάλυση των δεδομένων πραγματοποιήθηκε με την χρήση του λογισμικού SPSS με την μέθοδο της περιγραφικής και στατιστικής συμπερασματολογίας
description: The aim of the present thesis was to find the relation and specify the importance of customer satisfaction during the reverse logistics process. We analyzed the concept of customer satisfaction & reverse logistics. Then we investigated the impact of reverse logistics on customer satisfaction. Furthermore, we performed research in order to calculate the impact of returns on customers that affects certain marketing indices. The data of this research were collected with an online survey to Skroutz customers, using a questionnaire and were analyzed with SPSS software with the methods of descriptive and inferential statistics
Weakly Supervised Learning of Multi-Object 3D Scene Decompositions Using Deep Shape Priors
Creators: name: Elich, Cathrin
name: Oswald, Martin R.
name: Pollefeys, Marc
name: Stueckler, Joerg
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Representing scenes at the granularity of objects is a prerequisite for scene understanding and decision making. We propose PriSMONet, a novel approach based on Prior Shape knowledge for learning Multi-Object 3D scene decomposition and representations from single images. Our approach learns to decompose images of synthetic scenes with multiple objects on a planar surface into its constituent scene objects and to infer their 3D properties from a single view. A recurrent encoder regresses a latent representation of 3D shape, pose and texture of each object from an input RGB image. By differentiable rendering, we train our model to decompose scenes from RGB-D images in a self-supervised way. The 3D shapes are represented continuously in function-space as signed distance functions which we pre-train from example shapes in a supervised way. These shape priors provide weak supervision signals to better condition the challenging overall learning task. We evaluate the accuracy of our model in inferring 3D scene layout, demonstrate its generative capabilities, assess its generalization to real images, and point out benefits of the learned representation.
description: Preprint accepted to Computer Vision and Image Understanding
P-wave $Ω_{b}$ states: masses and pole residues
Creators: name: Xu, Yong-Jiang
name: Liu, Yong-Lu
name: Huang, Ming-Qiu
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper, we consider all P-wave $Ω_{b}$ states represented by interpolating currents with a derivative and calculate the corresponding masses and pole residues with the method of QCD sum rule. Due to the large uncertainties in our calculation compared with the small difference in the masses of the excited $Ω_{b}$ states observed by the LHCb collaboration, it is necessary to study other properties of the P-wave $Ω_{b}$ states represented by the interpolating currents investigated in the present work in order to have a better understanding about the four excited $Ω_{b}$ states observed by the LHCb collaboration.
description: 14 pages, 8 figures