cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Correction to: Using Geodesign as a boundary management process for planning nature-based solutions in river landscapes (Ambio, (2021), 50, 8, (1477-1496), 10.1007/s13280-020-01435-4)
Creators: name: Gottwald, Sarah
name: Brenner, Jana
name: Janssen, Ron
name: Albert, Christian
Publisher: name: [Dordrecht] : Springer Netherlands
Year: 2021
Subjects: subject: Freshwater
subject: Land use change
subject: Participatory mapping
subject: Planning support tool
subject: River management
subject: Touch table
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft::333 | Boden- und Energiewirtschaft::333,7 | Natürliche Ressourcen, Energie und Umwelt

description: In the original publication, the given name and surname of the author Blal Adem Esmail was swapped in one of the references and hence incorrectly cited as Blal and Geneletti (2017) in the article. The correct reference is provided below. Adem Esmail, B., and D. Geneletti. 2017. Design and impact assessment of watershed investments: An approach based on ecosystem services and boundary work. Environmental Impact Assessment Review 62: 1–13. The original article has been corrected.
Computational aspects of quasi-static crack propagation
Creators: name: Knees, Dorothee
name: Schröder, Andreas
Publisher: name: Weierstrass Institute
Year: 2011
Subjects: subject: rate-independent crack propagation
subject: self-contact
subject: global energetic model
subject: BV-model
subject: vanishing viscosity approach
subject: convergence rate for energy release rates
subject: finite elements
subject: 74R10
subject: 49L25
subject: 49J40
subject: 74G65
subject: 65M60
subject: 65N30

description: The focus of this note lies on the numerical analysis of models describing the propagation of a single crack in a linearly elastic material. The evolution of the crack is modeled as a rate-independent process based on the Griffith criterion. We follow two different approaches for setting up mathematically well defined models: the global energetic approach and an approach based on a viscous regularization. We prove the convergence of solutions of fully discretized models (i.e. with respect to time and space) and derive relations between the discretization parameters (mesh size, time step size, viscosity parameter, crack increment) which guarantee the convergence of the schemes. Further, convergence rates are provided for the approximation of energy release rates by certain discrete energy release rates. Thereby we discuss both, models with self-contact conditions on the crack faces as well as models with pure Neumann conditions on the crack faces. The convergence proofs rely on regularity estimates for the elastic fields close to the crack tip and local and global finite element error estimates. Finally the theoretical results are illustrated with some numerical calculations.
Active learners in numeracy: implementing guided play for early numeracy learning
Creators: name: Gawthorpe, Anna
name: Campbell Davidson, K.
Publisher: name: The School of Education and Communities, University of East London
Year: 2023

description: Reception teachers frequently report a tension between the development of children’s academic knowledge and skills and that of the prime areas of learning (communication and language, personal, social and emotional development and physical development). This is particularly pertinent when considering support for children from disadvantaged backgrounds, who are often adversely affected by environmental factors. Play-based pedagogies, such as guided play, have the potential to address this tension; however, further practical guidance is needed on implementation. This action research project sought to develop a research-informed approach to implementing guided play in the teaching of early number concepts, which, simultaneously, addressed the prime areas of learning with a focus on physical development. A toolkit of activities and resources was developed and delivered in five schools, for 150 children. Naturalistic observation data was gathered from teachers from each school. Key observations are shared that explore how children’s number sense develops through multisensory and socially interactive approaches. An evaluation of the practical limitations of the project offers insights that may support other teacher-researchers.
Modeling of reduced secondary electron emission yield from a foam or fuzz surface
Creators: name: Swanson, Charles
name: Kaganovich, Igor D.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Complex structures on a material surface can significantly reduce the total secondary electron emission yield from that surface. A foam or fuzz is a solid surface above which is placed a layer of isotropically aligned whiskers. Primary electrons that penetrate into this layer produce secondary electrons that become trapped and not escape into the bulk plasma. In this manner the secondary electron yield (SEY) may be reduced. We developed an analytic model and conducted numerical simulations of secondary electron emission from a foam to determine the extent of SEY reduction. We find that the relevant condition for SEY minimization is $\bar{u} \equiv AD/2 >>1 $, where $D$ is the volume fill fraction and $A$ is the aspect ratio of the whisker layer, the ratio of the thickness of the layer to the radius of the fibers. We find that foam can not reduce the SEY from a surface to less than 0.3 of its flat value.
Optimal and pressure-independent $L^2$ velocity error estimates for a modified Crouzeix--Raviart Stokes element with BDM reconstructions
Creators: name: Brennecke, Christian
name: Linke, Alexander
name: Merdon, Christian
name: Schöberl, Joachim
Publisher: name: Weierstrass Institute
Year: 2014
Subjects: subject: variational crime
subject: Crouzeix-Raviart finite element
subject: divergence-free mixed method
subject: incompressible Navier-Stokes equations
subject: a priori error estimates

description: Nearly all inf-sup stable mixed finite elements for the incompressible Stokes equations relax the divergence constraint. The price to pay is that a priori estimates for the velocity error become pressure-dependent, while divergence-free mixed finite elements deliver pressure-independent estimates. A recently introduced new variational crime using lowest-order Raviart-Thomas velocity reconstructions delivers a much more robust modified Crouzeix-Raviart element, obeying an optimal pressure-independent discrete H1 velocity estimate. Refining this approach, a more sophisticated variational crime employing the lowest-order BDM element is proposed, which also allows proving an optimal pressure independent L2  velocity error. Numerical examples confirm the analysis and demonstrate the improved robustness in the Navier-Stokes case.
Selective Bacterial Targeting and Infection-Triggered Release of Antibiotic Colistin Conjugates
Creators: name: Tegge, Werner
name: Guerra, Giulia
name: Höltke, Alexander
name: Schiller, Lauritz
name: Beutling, Ulrike
name: Harmrolfs, Kirsten
name: Gröbe, Lothar
name: Wullenkord, Hannah
name: Xu, Chunfa
name: Weich, Herbert
name: Brönstrup, Mark
Publisher: name: Weinheim : Wiley-VCH
Year: 2021
Subjects: subject: Antibiotics
subject: drug conjugates
subject: drug delivery
subject: immune activation
subject: natural products
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: In order to render potent, but toxic antibiotics more selective, we have explored a novel conjugation strategy that includes drug accumulation followed by infection-triggered release of the drug. Bacterial targeting was achieved using a modified fragment of the human antimicrobial peptide ubiquicidin, as demonstrated by fluorophore-tagged variants. To limit the release of the effector colistin only to infection-related situations, we introduced a linker that was cleaved by neutrophil elastase (NE), an enzyme secreted by neutrophil granulocytes at infection sites. The linker carried an optimized sequence of amino acids that was required to assure sufficient cleavage efficiency. The antibacterial activity of five regioisomeric conjugates prepared by total synthesis was masked, but was released upon exposure to recombinant NE when the linker was attached to amino acids at the 1- or the 3-position of colistin. A proof-of-concept was achieved in co-cultures of primary human neutrophils and Escherichia coli that induced the secretion of NE, the release of free colistin, and an antibacterial efficacy that was equal to that of free colistin.
Additional file 2 of Do corticosteroids reduce the mortality of influenza A (H1N1) infection? A meta-analysis
Creators: name: Zhang, Yi
name: Sun, Wenjie
name: Svendsen, Erik R
name: Tang, Song
name: MacIntyre, Raina C
name: Yang, Peng
name: Zhang, Daitao
name: Wang, Quanyi
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: Presents subgroup analyses for case–control studies.
The Impact of LI-RADS CT and MRI Ancillary Features on LI-RADS Categorization and Diagnostic Performance: An Individual Participant Data Meta-Analysis
Creators: name: McInnes, Matthew
name: Lam, Eric
name: Van Der Pol, Christian B
Publisher: name: OSF Registries
Year: 2024
Subjects: subject: Radiology
subject: Medicine and Health Sciences
subject: Medical Specialties

description: Using individual participant data meta-analysis, to evaluate the impact of individually applying AFs on the following performance characteristics of CT/MRI LI-RADS: area under the receiver operator characteristic curve (AUC) for categories LR1-LR5; and positive predictive value (PPV), sensitivity, and specificity of LR-5 for HCC, with and without allowing AFs to up-categorize LR-4 to LR-5.
Guaranteed energy error estimators for a modified robust Crouzeix--Raviart Stokes element
Creators: name: Linke, Alexander
name: Merdon, Christian
Publisher: name: Weierstrass Institute
Year: 2014
Subjects: subject: mixed finite elements
subject: a posteriori error estimation
subject: divergence-free method
subject: incompressible Stokes equations
subject: Crouzeix-Raviart element
subject: 65N30
subject: 65N15
subject: 76D07
subject: 47.11.Fg

description: This paper provides guaranteed upper energy error bounds for a modified lowest-order nonconforming Crouzeix--Raviart finite element method for the Stokes equations. The modification from [A. Linke 2014, On the role of the Helmholtz-decomposition in mixed methods for incompressible flows and a new variational crime] is based on the observation that only the divergence-free part of the right-hand side should balance the vector Laplacian. The new method has optimal energy error estimates and can lead to errors that are smaller by several magnitudes, since the estimates are pressure-independent. An efficient a posteriori velocity error estimator for the modified method also should involve only the divergence-free part of the right-hand side. Some designs to approximate the Helmholtz projector are compared and verified by numerical benchmark examples. They show that guaranteed error control for the modified method is possible and almost as sharp as for the unmodified method.
Additional file 1 of The impact of COVID-19 quarantine on dietary habits and physical activity in Saudi Arabia: a cross-sectional study
Creators: name: Bakhsh, Manar Abduljalil
name: Khawandanah, Jomana
name: Naaman, Rouba Khalil
name: Alashmali, Shoug
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Cancer

description: Additional file 1. English version of the questionnaire.
Boolean functions: noise stability, non-interactive correlation distillation, and mutual information
Creators: name: Li, Jiange
name: Medard, Muriel
Publisher: name: arXiv
Year: 2018
Subjects: subject: Probability (math.PR)
subject: Information Theory (cs.IT)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Let $T_ε$ be the noise operator acting on Boolean functions $f:\{0, 1\}^n\to \{0, 1\}$, where $ε\in[0, 1/2]$ is the noise parameter. Given $α>1$ and fixed mean $\mathbb{E} f$, which Boolean function $f$ has the largest $α$-th moment $\mathbb{E}(T_εf)^α$? This question has close connections with noise stability of Boolean functions, the problem of non-interactive correlation distillation, and Courtade-Kumar's conjecture on the most informative Boolean function. In this paper, we characterize maximizers in some extremal settings, such as low noise ($ε=ε(n)$ is close to 0), high noise ($ε=ε(n)$ is close to 1/2), as well as when $α=α(n)$ is large. Analogous results are also established in more general contexts, such as Boolean functions defined on discrete torus $(\mathbb{Z}/p\mathbb{Z})^n$ and the problem of noise stability in a tree model.
description: Corrections of some inaccuracies
Evaluating Content-centric vs User-centric Ad Affect Recognition
Creators: name: Shukla, Abhinav
name: Gullapuram, Shruti Shriya
name: Katti, Harish
name: Yadati, Karthik
name: Kankanhalli, Mohan
name: Subramanian, Ramanathan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Despite the fact that advertisements (ads) often include strongly emotional content, very little work has been devoted to affect recognition (AR) from ads. This work explicitly compares content-centric and user-centric ad AR methodologies, and evaluates the impact of enhanced AR on computational advertising via a user study. Specifically, we (1) compile an affective ad dataset capable of evoking coherent emotions across users; (2) explore the efficacy of content-centric convolutional neural network (CNN) features for encoding emotions, and show that CNN features outperform low-level emotion descriptors; (3) examine user-centered ad AR by analyzing Electroencephalogram (EEG) responses acquired from eleven viewers, and find that EEG signals encode emotional information better than content descriptors; (4) investigate the relationship between objective AR and subjective viewer experience while watching an ad-embedded online video stream based on a study involving 12 users. To our knowledge, this is the first work to (a) expressly compare user vs content-centered AR for ads, and (b) study the relationship between modeling of ad emotions and its impact on a real-life advertising application.
description: Accepted at the ACM International Conference on Multimodal Interation (ICMI) 2017
Weak Segregation Theory and Non-Conventional Morphologies in the Ternary ABC Triblock Copolymers
Creators: name: Erukhimovich, Igor Ya.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The Leibler weak segregation theory in molten diblock copolymers is generalized with due regard for the 2nd shell harmonics contributions defined in the paper and the phase diagrams are built for the linear and miktoarm ternary ABC triblock copolymers. The symmetric linear copolymers with the middle block non-selective with respect to the side ones are shown to undergo the continuous ODT not only into the lamellar phase but also into various non-conventional cubic phases (depending on the middle block composition it could be the simple cubic, face-centered cubic or non-centrosymmetric phase revealing the symmetry of space group No.214 first predicted to appear in molten block copolymers). For asymmetric linear ABC copolymers a region of compositions is found where the weakly segregated gyroid (double gyroid) phase exists between the planar hexagonal and lamellar or one of the non-conventional cubic phases up to the very critical point. In contrast, the miktoarm ABC block copolymers with one of its arm non-selective with respect to the two others are shown to reveal a pronounced tendency towards strong segregation, which is preceded by increase of stability of the conventional BCC phase and a peculiar weakly segregated BCC phase (BCC3), where the dominant harmonics belong to the 3rd co-ordination sphere of the reciprocal lattice. The validity region of the developed theory is discussed and outlined in the composition triangles both for linear and miktoarm copolymers.
description: 61 pages, 12 figures
Additional file 2 of Public perceptions of predictive testing for rheumatoid arthritis compared to breast cancer and early-onset Alzheimer’s disease: a qualitative study
Creators: name: Singhal, Juhi
name: Wells, Imogen
name: Simons, Gwenda
name: Wöhlke, Sabine
name: Raza, Karim
name: Falahee, Marie
Publisher: name: figshare
Year: 2022
Subjects: Biological Sciences not elsewhere classified
Science Policy

description: Additional file 2. Semi-structured interview schedule.
Thickness-dependent gap energies in thin layers of Hf Te5
Creators: name: Belke, C.
name: Locmelis, S.
name: Thole, L.
name: Schmidt, H.
name: Behrens, P.
name: Haug, R.J.
Publisher: name: Bristol : IOP Publ.
Year: 2021
Subjects: subject: Eletrical transport
subject: Gap energies
subject: Thin layers
subject: Transition metal chalcogenide
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Hafnium pentatelluride (Hf Te5) is a layered two-dimensional material with various exotic properties. It is thought to be a topological insulator. Whereas bulk Hf Te5 has a small band gap, single layers are predicted to be a quantum spin hall insulator with a large band gap. Here we measured band gap energies for samples with varying thicknesses and found a clear increase of gap energies for the thinner samples. With decreasing thickness an increase of the measured band gap energies from 40 to 304 meV is observed.
Delay-induced patterns in a two-dimensional lattice of coupled oscillators
Creators: name: Kantner, Markus
name: Schöll, Eckehard
name: Yanchuk, Serhiy
Publisher: name: Weierstrass Institute
Year: 2015
Subjects: subject: Delay-coupled systems
subject: Pattern formation
subject: Bifurcations
subject: Stability analysis
subject: 05.45.-a
subject: 02.30.Ks
subject: 89.75.Kd

description: We show how a variety of stable spatio-temporal periodic patterns can be created in 2D-lattices of coupled oscillators with non-homogeneous coupling delays. The results are illustrated using the FitzHugh-Nagumo coupled neurons as well as coupled limit cycle (Stuart-Landau) oscillators. A "hybrid dispersion relation" is introduced, which describes the stability of the patterns in spatially extended systems with large time-delay.
Boundary String Field Theory of the DDbar System
Creators: name: Kraus, Per
name: Larsen, Finn
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We develop the boundary string field theory approach to tachyon condensation on the DDbar system. Particular attention is paid to the gauge fields, which combine with the tachyons in a natural way. We derive the RR-couplings of the system and express the result in terms of Quillen's superconnection. The result is related to an index theorem, and is thus shown to be exact.
description: 38 pages, harvmac. v2: added references
Temperature dependence of universal conductance fluctuation due to development of weak localization in graphene
Creators: name: Terasawa, D.
name: Fukuda, A.
name: Fujimoto, A.
name: Ohno, Y.
name: Matsumoto, K.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The temperature effect of quantum interference on resistivity is examined in monolayer graphene, with experimental results showing that the amplitude of the conductance fluctuation increases as temperature decreases. We find that this behavior can be attributed to the decrease in the inelastic scattering (dephasing) rate, which enhances the weak localization (WL) correction to resistivity. Following a previous report that explained the relationship between the universal conductance fluctuation (UCF) and WL regarding the gate voltage dependence (D. Terasawa, et al., Phys. Rev. B 95 125427 (2017)), we propose that the temperature dependence of the UCF in monolayer graphene can be interpreted by the WL theory.
description: 5 pages, 3 figures, 1 table, 32 references
Dynamic Oscillatory Coherence (DOC): A Foundational Framework for Recursive Emergence of Physical Law
Creators: name: Thavarajah, Rogan
Publisher: name: Zenodo
Year: 2025

description: This series presents the Dynamic Oscillatory Coherence (DOC) framework—a first-principles theory in which mass, force, space, time, and constants of nature emerge from recursive interactions between coherence and dark coherence fields. Built upon a foundational spinor field Ψ=a+bi+c(−1)i\Psi = a + bi + c(-1)^iΨ=a+bi+c(−1)i, the DOC model reinterprets particles as stabilized oscillatory eigenstates, forces as coherence field gradients, and dimensionality as a recursive function of phase stability.

Across a layered structure of  Sections and appendices, this series formalizes:\n

Recursive field equations for coherence-dark coherence dynamics

Mass generation via phase locking and misalignment factors

Force strengths from spatial and temporal coherence gradients

Dimensional growth and variable constants such as ccc, GGG, and α\alphaα

The emergence of time from discrete temporon chains

The dark sector as a real-field eigenmode structure

Coherence walls, infoton seed fields, and the universal observer

In addition to reproducing key features of the Standard Model and general relativity, DOC offers natural resolutions to long-standing paradoxes: the origin of time, the value of constants, the structure of dark matter, and the emergence of observers. This work provides the foundational framework that has the potentiasl to produce  a number of testible predictive for known anomalies in particle physics and cosmology, as well  as a number of de novo preictions.
Diagonalization of full finite temperature Green's function by quasi-particles
Creators: name: Henning, P. A.
name: Umezawa, H.
Publisher: name: arXiv
Year: 1993
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: For thermal systems, standard perturbation theory breaks down because of the absence of stable, observable asymptotic states. We show, how the introduction of {\it statistical} quasi-particles (stable, but not observable) gives rise to a consistent description. Statistical and spectral information can be cleanly separated also for interacting systems.
description: 9 pages in standard LaTeX
Topic space trajectories: A case study on machine learning literature
Creators: name: Schaefermeier, Bastian
name: Stumme, Gerd
name: Hanika, Tom
Publisher: name: Dordrecht [u.a.] : Springer Science + Business Media B.V.
Year: 2021
Subjects: subject: Interpretable Machine Learning
subject: Multidimensional Scaling
subject: Non-Negative Matrix Factorization
subject: Publication Dynamics
subject: Topic Models
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::050 | Zeitschriften, fortlaufende Sammelwerke
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::370 | Erziehung, Schul- und Bildungswesen

description: The annual number of publications at scientific venues, for example, conferences and journals, is growing quickly. Hence, even for researchers it becomes harder and harder to keep track of research topics and their progress. In this task, researchers can be supported by automated publication analysis. Yet, many such methods result in uninterpretable, purely numerical representations. As an attempt to support human analysts, we present topic space trajectories, a structure that allows for the comprehensible tracking of research topics. We demonstrate how these trajectories can be interpreted based on eight different analysis approaches. To obtain comprehensible results, we employ non-negative matrix factorization as well as suitable visualization techniques. We show the applicability of our approach on a publication corpus spanning 50 years of machine learning research from 32 publication venues. In addition to a thorough introduction of our method, our focus is on an extensive analysis of the results we achieved. Our novel analysis method may be employed for paper classification, for the prediction of future research topics, and for the recommendation of fitting conferences and journals for submitting unpublished work. An advantage in these applications over previous methods lies in the good interpretability of the results obtained through our methods.
Asymmetries of Secondary Cosmic Muons with High Statistics and Low Systematics
Creators: name: Lin, T. F.
name: Fields, B.
name: Gress, J.
name: Poirier, J.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Project GRAND measures the asymmetries of secondary cosmic muons by calculating the differences between the muons from the east and the muons from the west for complete solar days. A similar north-south difference is also presented. These muons are identified in single track data taken with the 64 stations of Project GRAND; the data cover a two year span with a total muon sample of 30 billion muons.
description: 4 pages, 2 figures
Additional file 1 of Efficacy of adipose tissue-derived stem cells in locomotion recovery after spinal cord injury: a systematic review and meta-analysis on animal studies
Creators: name: Rafiei Alavi, Seyedeh Niloufar
name: Madani Neishaboori, Arian
name: Hossein, Hasti
name: Sarveazad, Arash
name: Yousefifard, Mahmoud
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer
subject: Science Policy

description: Additional file 1. Search query for databases.
On spurious oscillations due to irrotational forces in the Navier--Stokes momentum balance
Creators: name: Linke, Alexander
name: Merdon, Christian
Publisher: name: Weierstrass Institute
Year: 2015
Subjects: subject: incompressible Navier--Stokes equations
subject: mixed finite element methods
subject: benchmarks
subject: spurious velocity oscillations
subject: 76D05
subject: 76M10
subject: 47.11.Fg

description: This contribution studies the influence of the pressure on the velocity error in finite element discretisations of the Navier--Stokes equations. Three simple benchmark problems that are all close to real-world applications convey that the pressure can be comparably large and is not to be underestimated. For widely used finite element methods like the Taylor--Hood finite element method, such relatively large pressures can lead to spurious oscillations and arbitrarily large errors in the velocity, even if the exact velocity is in the ansatz space. Only mixed finite element methods, whose velocity error is pressure-independent, like the Scott--Vogelius finite element method can avoid this influence.
title: Computational Physics
title: Υπολογιστική φυσική
title: Μια πρακτική εισαγωγή στην υπολογιστική φυσική και τον επιστημονικό προγραμματισμό
titleType: AlternativeTitle
Creators: name: Anagnostopoulos, Konstantinos
Publisher: name: Kallipos, Open Academic Editions
Year: 2016
Subjects: ΕΠΙΣΤΗΜΟΝΙΚΟΣ ΠΡΟΓΡΑΜΜΑΤΙΣΜΟΣ ΓΙΑ ΜΗΧΑΝΙΚΟΥΣ
ΥΠΟΛΟΓΙΣΤΙΚΗ ΦΥΣΙΚΗ
Scientific Programming
Computational Physics

description: Το βιβλίο έρχεται να καλύψει ένα σημαντικό κενό στην ελληνική επιστημονική βιβλιογραφία στο πεδίο του εισαγωγικού επιστημονικού προγραμματισμού για μηχανικούς και επιστήμονες. Βασίζεται σε τρία μαθήματα που ο συγγραφέας έχει θεμελιώσει και διδάξει από το 2004 στο ΕΜΠ και απευθύνεται κυρίως σε 3ετείς και 4ετείς προπτυχιακούς φοιτητές σχολών θετικών επιστημών και επιστημών του μηχανικού. Τα πρώτα του κεφάλαια διδάσκονται χωρίς πρόβλημα και σε φοιτητές του 4ου εξαμήνου. Δίνεται έμφαση στον εξ' αρχής προγραμματισμό, στην ανάλυση και στην επιστημονική ερμηνεία των αποτελεσμάτων με τρόπο πρακτικό και με μάθηση δια της εμπειρίας. Η επιλογή των προβλημάτων και του λογισμικού δίνει έμφαση στην εκπαίδευση όσων θα ασχοληθούν με υπολογιστικά προβλήματα υψηλής απόδοσης και με στόχο να εκτεθεί ο αναγνώστης σε όσο το δυνατόν πλατύτερο εύρος κατευθύνσεων στον επιστημονικό προγραμματισμό.

Το βιβλίο αποτελείται από 13 κεφάλαια με θεματολογία που καλύπτει ένα μεγάλο εύρος από ενδιαφέροντα φυσικά προβλήματα. Η θεωρία των περισσοτέρων είναι ήδη γνωστή στον αναγνώστη από εισαγωγικά μαθήματα φυσικής. Το βιβλίο παρουσιάζει όλα τα απαραίτητα εισαγωγικά στοιχεία και δίνει αναφορές για περαιτέρω μελέτη όπου χρειάζεται. Τα κεφάλαια τελειώνουν με ασκήσεις διαβαθμισμένης δυσκολίας. Το βιβλίο συνοδεύεται από λογισμικό το οποίο περιέχει όλους τους κώδικες που παρουσιάζονται στο βιβλίο, αλλά και συμπληρωματικά προγράμματα για εξάσκηση.

Οτιδήποτε παρουσιάζεται στο βιβλίο απαιτεί μόνο ελεύθερο λογισμικό.
On the evolution of the empirical measure for hard-sphere dynamics
Creators: name: Simonella, Sergio
name: Pulvirenti, Mario
Publisher: name: Weierstrass Institute
Year: 2015
Subjects: subject: BBGKY hierarchy
subject: hard sphere
subject: empirical measure
subject: marginal
subject: Enskog equation
subject: 82C05
subject: 82C40
subject: 35Q20

description: We prove that the evolution of marginals associated to the empirical measure of a finite system of hard spheres is driven by the BBGKY hierarchical expansion. The usual hierarchy of equations for L^1 measures is obtained as a corollary. We discuss the ambiguities arising in the corresponding notion of microscopic series solution to the Boltzmann-Enskog equation.
title: ADCO, Troisième cartulaire de Saint-Étienne de Dijon (XVIe), Cart. 23 (G 127), 310 folios, f. 00317
Creators: name: de la Côte d'Or, Archives départementales
name: CG21/F.PETOT/2011
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Troisième cartulaire de Saint-Étienne de Dijon (XVIe), Archives départementales de la Côte-d'Or, Cart. 23 (G 127), 310 folios, f. 00317, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Troisième cartulaire de Saint-Étienne de Dijon (XVIe), Archives départementales de la Côte-d'Or, Cart. 23 (G 127), 310 folios, f. 00317, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Joint estimation of road roughness from crowd-sourced bicycle acceleration measurements
Creators: name: Wage, O.
name: Sester, M.
Publisher: name: Katlenburg-Lindau : Copernicus
Year: 2021
Subjects: subject: Cycling comfort
subject: Data integration
subject: Floating bike data
subject: Volunteered geographic information
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: In contrast to cars, route choices for cycling are barely influenced by the respective traffic situation, but to a large extent by the routes' comfort. Especially in urban settings with several alternatives, segments with many or long stops at traffic lights and badly maintained roads are avoided due to a low comfort and cyclists vary from the shortest route. This fact is only indirectly considered in common navigation applications. This work aims to integrate surface roughness measurements collected from diverse bicycles to a joint scale via a least-squares adjustment. Data was collected using smartphones, which were mounted to bike hand bars and measured positions and vertical accelerations on user's trips. As this way sensed roughness also depends on the bike setting and type, the resulting values would be different for different users. Thus, this paper presents a novel approach to harmonize observations from differing sensitive setups. The basic concept idea of bundle block adjustment is adapted to calibrate a basic scale model and in parallel adjust the observations of surface roughness to a common scale. This way a crowd-sourced roughness map can be generated. Such a map can be used to enrich bike focused routing services and thus encourage cycling in daily live. In addition, it can also be used to derive hints for infrastructure servicing.
Superconductivity of the Ternary Boride Li_2Pd_3B Probed by ^{11}B NMR
Creators: name: Nishiyama, M.
name: Inada, Y.
name: Zheng, Guo-qing
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report a ^{11}B NMR measurement on the recently discovered superconductor Li_2Pd_3B. The nuclear spin lattice relaxation rate 1/T_1 shows a well-defined coherence peak just below T_c (H=1.46 T)=5.7 K, and the spin susceptibility measured by the Knight shift also decreases below T_c. These results indicate that the superconductivity is of conventional nature, with an isotropic gap. Our results also suggest that the $p$-electrons of boron and the d-electrons of palladium that hybridize with boron $p$-electrons are primarily responsible for the superconductivity.
description: 4 pages, 5 figures
On a stack of surfaces obtained from the $\mathbb{C}P^{N-1}$ sigma models
Creators: name: Goldstein, P P
name: Grundland, A M
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: 81T45, 53C43, 35Q51

description: Under the assumption that the $\mathbb{C}P^{N-1}$ sigma model is defined on the Riemann sphere and its action functional is finite, we derive surfaces induced by surfaces and we demonstrate that the stacked surfaces coincide with each other, which means idempotency of the recurrent procedure. Along the path to the solutions of the $\mathbb{C}P^{N-1}$ model equations, we demonstrate that the Euler--Lagrange equations for the projectors admit larger classes of solutions than the ones corresponding to rank-1 projectors.
description: 12 pages, no figures
On the Game Chromatic Number of Sparse Random Graphs
Creators: name: Frieze, Alan
name: Haber, Simcha
name: Lavrov, Mikhail
Publisher: name: Carnegie Mellon University
Year: 2014
Subjects: subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Given a graph G and an integer k, two players take turns coloring the vertices of G one by one using k colors so that neighboring vertices get different colors. The first player wins iff at the end of the game all the vertices of G are colored. The game chromatic number χg(G) is the minimum k for which the first player has a winning strategy. The paper [6] began the analysis of the asymptotic behavior of this parameter for a random graph Gn,p. This paper provides some further analysis for graphs with constant average degree i.e. np = O(1) and for random regular graphs. We show that w.h.p. c1χ(Gn,p) ≤ χg(Gn,p) ≤ c2χ(Gn,p) for some absolute constants 1 < c1 < c2. We also prove that if Gn,3 denotes a random n-vertex cubic graph then w.h.p. χg(Gn,3) = 4.
Well-posedness of space and time dependent transport equations on a network
Creators: name: Roggensack, Arne
Publisher: name: Weierstrass Institute
Year: 2015
Subjects: subject: Transport equation
subject: PDE on a network
subject: coupled boundary value problem
subject: renormalization property
subject: existence and uniqueness
subject: 35R02
subject: 35F46

description: This article is concerned with the study of weak solutions of a linear transport equation on a bounded domain with coupled boundary data for general non smooth space and time dependent velocity fields. The existence of solutions, its uniqueness and the continuous dependence of the solution on the initial and boundary data as well on the velocity is proven. The results are based on the renormalization property. At the end, the theory is shown to be applicable to the continuity equation on a network.
Additional file 1 of Factorial validity and measurement invariance of the Psychosocial Uncertainty Scale
Creators: name: Lucas Casanova, Mariana
name: Pacheco, Lara S.
name: Costa, Patrício
name: Lawthom, Rebecca
name: Coimbra, Joaquim Luís
Publisher: name: figshare
Year: 2021
Subjects: subject: Neuroscience
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1: Supplementary Material includes tables and figures identified in the manuscript, as well as correlations and covariances matrices.
Plan of the fort of Bir el-Hammamat
Creators: name: Brun, J.-P.
name: Martin, N.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020

description: Plan of the fort of Bir el-Hammamat, after the MAFDO survey
Mixed probability models for aleatoric uncertainty estimation in the context of dense stereo matching
Creators: name: Zhong, Z.
name: Mehltretter, M.
Publisher: name: Katlenburg-Lindau : Copernicus
Year: 2021
Subjects: subject: 3D Reconstruction
subject: Deep Learning
subject: Mixture Model
subject: Uncertainty Quantification
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: The ability to identify erroneous depth estimates is of fundamental interest. Information regarding the aleatoric uncertainty of depth estimates can be, for example, used to support the process of depth reconstruction itself. Consequently, various methods for the estimation of aleatoric uncertainty in the context of dense stereo matching have been presented in recent years, with deep learning-based approaches being particularly popular. Among these deep learning-based methods, probabilistic strategies are increasingly attracting interest, because the estimated uncertainty can be quantified in pixels or in metric units due to the consideration of real error distributions. However, existing probabilistic methods usually assume a unimodal distribution to describe the error distribution while simply neglecting cases in real-world scenarios that could violate this assumption. To overcome this limitation, we propose two novel mixed probability models consisting of Laplacian and Uniform distributions for the task of aleatoric uncertainty estimation. In this way, we explicitly address commonly challenging regions in the context of dense stereo matching and outlier measurements, respectively. To allow a fair comparison, we adapt a common neural network architecture to investigate the effects of the different uncertainty models. In an extensive evaluation using two datasets and two common dense stereo matching methods, the proposed methods demonstrate state-of-the-art accuracy.
Global strong solutions of the full Navier--Stokes and $Q$-tensor system for nematic liquid crystal flows in $2D$: Existence and long-time behavior
Creators: name: Cavaterra, Cecilia
name: Rocca, Elisabetta
name: Wu, Hao
name: Xu, Xiang
Publisher: name: Weierstrass Institute
Year: 2015
Subjects: subject: Nematic liquid crystal flow
subject: Q-tensor system
subject: global strong solution
subject: uniqueness of asymptotic limit
subject: 35B44
subject: 35D30
subject: 35K45
subject: 35Q30
subject: 76A15

description: We consider a full Navier-Stokes and $Q$-tensor system for incompressible liquid crystal flows of nematic type. In the two dimensional periodic case, we prove the existence and uniqueness of global strong solutions that are uniformly bounded in time. This result is obtained without any smallness assumption on the physical parameter $xi$ that measures the ratio between tumbling and aligning effects of a shear flow exerting over the liquid crystal directors. Moreover, we show the uniqueness of asymptotic limit for each global strong solution as time goes to infinity and provide an uniform estimate on the convergence rate.
Partial spontaneous breaking of two-dimensional supersymmetry
Creators: name: Ivanov, E.
name: Krivonos, S.
name: Lechtenfeld, O.
name: Zupnik, B.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct low-energy Goldstone superfield actions describing various patterns of the partial spontaneous breakdown of two-dimensional N=(1,1), N=(2,0) and N=(2,2) supersymmetries, with the main focus on the last case. These nonlinear actions admit a representation in the superspace of the unbroken supersymmetry as well as in a superspace of the full supersymmetry. The natural setup for implementing the partial breaking in a self-consistent way is provided by the appropriate central extensions of D=2 supersymmetries, with the central charges generating shift symmetries on the Goldstone superfields. The Goldstone superfield actions can be interpreted as manifestly world-sheet supersymmetric actions in the static gauge of some superstrings and D1-branes in D=3 and D=4 Minkowski spaces. As an essentially new example, we elaborate on the action representing the 1/4 partial breaking pattern N=(2,2) -> N=(1,0).
description: 32 pages, version published in Nucl. Phys. B
Public involvement in the governance of population-level biomedical research: Unresolved questions and future directions
Creators: name: Erikainen, Sonja
name: Friesen, Phoebe
name: Rand, Leah
name: Jongsma, Karin
name: Dunn, Michael
name: Sorbie, Annie
name: McCoy, Matthew
name: Bell, Jessica
name: Burgess, Michael
name: Chen, Haidan
name: Chico, Vicky
name: Cunningham-Burley, Sarah
name: Darbyshire, Julie
name: Dawson, Rebecca
name: Evans, Andrew
name: Fahy, Nick
name: Finlay, Teresa
name: Frith, Lucy
name: Goldenberg, Aaron
name: Hinton, Lisa
name: Hoppe, Nils
name: Hughes, Nigel
name: Koenig, Barbara
name: Lignou, Sapfo
name: McGowan, Michelle
name: Parker, Michael
name: Prainsack, Barbara
name: Shabani, Mahsa
name: Staunton, Ciara
name: Thompson, Rachel
name: Varnai, Kinga
name: Vayena, Effy
name: Williams, Oli
name: Williamson, Max
name: Chan, Sarah
name: Sheehan, Mark
Publisher: name: London : BMJ Publ.
Year: 2020
Subjects: subject: decision-making
subject: public health ethics
subject: regulation
subject: research ethics
subject: Dewey Decimal Classification::100 | Philosophie
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: Population-level biomedical research offers new opportunities to improve population health, but also raises new challenges to traditional systems of research governance and ethical oversight. Partly in response to these challenges, various models of public involvement in research are being introduced. Yet, the ways in which public involvement should meet governance challenges are not well understood. We conducted a qualitative study with 36 experts and stakeholders using the World Café method to identify key governance challenges and explore how public involvement can meet these challenges. This brief report discusses four cross-cutting themes from the study: the need to move beyond individual consent; issues in benefit and data sharing; the challenge of delineating and understanding publics; and the goal of clarifying justifications for public involvement. The report aims to provide a starting point for making sense of the relationship between public involvement and the governance of population-level biomedical research, showing connections, potential solutions and issues arising at their intersection. We suggest that, in population-level biomedical research, there is a pressing need for a shift away from conventional governance frameworks focused on the individual and towards a focus on collectives, as well as to foreground ethical issues around social justice and develop ways to address cultural diversity, value pluralism and competing stakeholder interests. There are many unresolved questions around how this shift could be realised, but these unresolved questions should form the basis for developing justificatory accounts and frameworks for suitable collective models of public involvement in population-level biomedical research governance.
Investigation of the luminescence properties and thermal stability of dysprosium, terbium, and europium ions singly- and co-doped strontium yttrium borate phosphors
Creators: name: Wu, Xingya
name: Liang, Yujun
name: Liu, Shiqi
name: Zhu, Yingli
name: Xu, Rui
name: Tong, Miaohui
name: Li, Kai
Publisher: name: Taylor & Francis
Year: 2017
Subjects: subject: Biophysics
subject: Physical Sciences not elsewhere classified
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plant Biology
subject: FOS: Biological sciences

description: A series of trivalent rare-earth element ions (europium, terbium, dysprosium) singly- and co-doped strontium yttrium borate phosphors was synthesized via the sol–gel method. The phase formation, luminescence properties, decay times, and energy transfer behaviors from terbium ions to europium ions, the thermal stability, and the Commission Internationale de L’Eclairage coordinates were investigated. Under the excitation of ultraviolet light, the singly doped phosphors exhibited green emission of terbium ions, white emission of dysprosium ions, and red emission of europium ions, respectively. For the terbium and europium ions co-doped strontium yttrium borate samples, a white emission can be realized by blending the doping concentration of terbium and europium ions. The critical distance between terbium and europium ions has been calculated to be about 14.52 Å and the energy transfer from terbium to europium occurred through the dipole–quadrupole interaction. At 150°C, the emission intensity of terbium and europium in the 12 mol% terbium and 14 mol% europium co-doped strontium yttrium borate sample was maintained at about 74% and 87% of their corresponding initial values, respectively, and the dysprosium ions singly doped strontium yttrium borate sample showed about 70% of its initial emission intensity at room temperature. The above results suggested that europium, terbium, dysprosium ions singly- and co-doped strontium yttrium borate phosphors have potential applications as ultraviolet-convertible phosphors.