cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Dark energy properties from large future galaxy surveys
Creators: name: Basse, Tobias
name: Bjaelde, Ole Eggers
name: Hamann, Jan
name: Hannestad, Steen
name: Wong, Yvonne Y. Y.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We perform a detailed forecast on how well a {\sc Euclid}-like survey will be able to constrain dark energy and neutrino parameters from a combination of its cosmic shear power spectrum, galaxy power spectrum, and cluster mass function measurements. We find that the combination of these three probes vastly improves the survey's potential to measure the time evolution of dark energy. In terms of a dark energy figure-of-merit defined as $(σ(w_{\mathrm p}) σ(w_a))^{-1}$, we find a value of 690 for {\sc Euclid}-like data combined with {\sc Planck}-like measurements of the cosmic microwave background (CMB) anisotropies in a 10-dimensional cosmological parameter space, assuming a $Λ$CDM fiducial cosmology. For the more commonly used 7-parameter model, we find a figure-of-merit of 1900 for the same data combination. We consider also the survey's potential to measure dark energy perturbations in models wherein the dark energy is parameterised as a fluid with a nonstandard non-adiabatic sound speed, and find that in an \emph{optimistic} scenario in which $w_0$ deviates by as much as is currently observationally allowed from $-1$, models with $\hat{c}_\mathrm{s}^2 = 10^{-6}$ and $\hat{c}_\mathrm{s}^2 = 1$ can be distinguished at more than $2σ$ significance. We emphasise that constraints on the dark energy sound speed from cluster measurements are strongly dependent on the modelling of the cluster mass function; significantly weaker sensitivities ensue if we modify our model to include fewer features of nonlinear dark energy clustering. Finally, we find that the sum of neutrino masses can be measured with a $1 σ$ precision of 0.015~eV, (abridged)
description: 26 pages, 5 figures, matches JCAP version
Impact of probation intervfentions on drug use outcomes for youths under probation supervision
Creators: name: Schwalbe, Craig S.
Publisher: name: Columbia University
Year: 2019
Subjects: Juvenile probation
Juvenile justice, Administration of
Youth--Drug use

description: Use of drugs and alcohol by justice-involved youths is a longstanding concern for juvenile justice policy-makers and researchers. However, little explored in this research is how the tactics and strategies employed by probation officers with this population impacts drug use outcomes. This study explored the effects of four types of probation strategies (positive pressure, negative pressure, parental involvement, treatment referrals) on 12-month drug use trajectories in a sample of 144 youths under probation supervision. Multilevel negative binomial regression models found that positive pressures (incentives & rewards) reduced drug use when negative pressures (threats & confrontation) were minimized. More frequent parental involvement early in the course of probation was associated with reduced drug use for girls, and was associated with increased drug use for both boys and girls later during the probation period. Finally, early referral to drug treatment programs was associated with reduced drug use outcomes. These findings suggest practical program and policy strategies to reduce drug use among probation-involved youths.
Deep Learning Meets Adaptive Filtering: A Stein's Unbiased Risk Estimator Approach
Creators: name: Esmaeilbeig, Zahra
name: Soltanalian, Mojtaba
Publisher: name: arXiv
Year: 2023
Subjects: subject: Signal Processing (eess.SP)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: This paper revisits two prominent adaptive filtering algorithms, namely recursive least squares (RLS) and equivariant adaptive source separation (EASI), through the lens of algorithm unrolling. Building upon the unrolling methodology, we introduce novel task-based deep learning frameworks, denoted as Deep RLS and Deep EASI. These architectures transform the iterations of the original algorithms into layers of a deep neural network, enabling efficient source signal estimation by leveraging a training process. To further enhance performance, we propose training these deep unrolled networks utilizing a surrogate loss function grounded on Stein's unbiased risk estimator (SURE). Our empirical evaluations demonstrate that the Deep RLS and Deep EASI networks outperform their underlying algorithms. Moreover, the efficacy of SURE-based training in comparison to conventional mean squared error loss is highlighted by numerical experiments. The unleashed potential of SURE-based training in this paper sets a benchmark for future employment of SURE either for training purposes or as an evaluation metric for generalization performance of neural networks.
description: arXiv admin note: substantial text overlap with arXiv:2011.07458
All Complete Intersection Calabi-Yau Four-Folds
Creators: name: Gray, James
name: Haupt, Alexander S.
name: Lukas, Andre
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We present an exhaustive, constructive, classification of the Calabi-Yau four-folds which can be described as complete intersections in products of projective spaces. A comprehensive list of 921,497 configuration matrices which represent all topologically distinct types of complete intersection Calabi-Yau four-folds is provided and can be downloaded at http://www-thphys.physics.ox.ac.uk/projects/CalabiYau/Cicy4folds/index.html . The manifolds have non-negative Euler characteristics in the range 0 - 2610. This data set will be of use in a wide range of physical and mathematical applications. Nearly all of these four-folds are elliptically fibered and are thus of interest for F-theory model building.
description: 19 pages, 2 figures, 2 ancillary files containing the full CICY four-fold list and the C++/Mathematica source code. v2: references added and one minor change below (2.5). Final version accepted for publication
Multi-scale modeling in thermal conductivity of Polyurethane incorporated with Phase Change Materials using Physics-Informed Neural Networks
Creators: name: Liu, Bokai
name: Wang, Yizheng
name: Rabczuk, Timon
name: Olofsson, Thomas
name: Lu, Weizhuo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Polyurethane (PU) possesses excellent thermal properties, making it an ideal material for thermal insulation. Incorporating Phase Change Materials (PCMs) capsules into Polyurethane (PU) has proven to be an effective strategy for enhancing building envelopes. This innovative design substantially enhances indoor thermal stability and minimizes fluctuations in indoor air temperature. To investigate the thermal conductivity of the PU-PCM foam composite, we propose a hierarchical multi-scale model utilizing Physics-Informed Neural Networks (PINNs). This model allows accurate prediction and analysis of the material's thermal conductivity at both the meso-scale and macro-scale. By leveraging the integration of physics-based knowledge and data-driven learning offered by PINNs, we effectively tackle inverse problems and address complex multi-scale phenomena. Furthermore, the obtained thermal conductivity data facilitates the optimization of material design. To fully consider the occupants' thermal comfort within a building envelope, we conduct a case study evaluating the performance of this optimized material in a single room. Simultaneously, we predict the energy consumption associated with this scenario. All outcomes demonstrate the promising nature of this design, enabling passive building energy design and significantly improving occupants' comfort. The successful development of this PINNs-based multi-scale model holds immense potential for advancing our understanding of PU-PCM's thermal properties. It can contribute to the design and optimization of materials for various practical applications, including thermal energy storage systems and insulation design in advanced building envelopes.
description: 25 pages, 25 figures
title: Multi-wavelength dynamic imaging of the pupillary photomotor reflex
title: Πολυφασματική δυναμική απεικόνιση του φωτοκινητικού αντανακλαστικού της κόρης του ματιού
Creators: name: Καριμπιδης Διονυσιος
Publisher: name: Technical University of Crete
Year: 2018

description: Pupillography is utilized as a method in order to record changes of the pupil diameter. Nervous System and especially Autonomic Nervous System (ANS) is responsible for controlling pupil reflexes, hence the pupil changes occur subconsciously. In this study an innovative, low-cost and wireless imaging system device developed for pupil non-invasive examination. The device is portable and there is also a possibility to apply different light stimulus within the visible spectrum and analyze the behavior of the pupil reaction. The goal of this thesis is to provide the proper device instrumentation and a basic algorithmic method to measure reliably and objectively the pupil diameter. For the needs of the proposed system an image processing algorithm and a graphic user interface was developed to control the device wirelessly. Due to the relation of pupillary reflexes and ANS, digital pupillography presents a simple and real time window for its functionality. Pupil responses may associate with a various pathologies such as brain or mental diseases, anxiety or autism with an uprising
research interest from various clinical studies to psychological impacting conditions.
Zur Lage des altsprachlichen Unterrichts in der Bundesrepublik Deutschland (Schuljahr 2004/2005). Bericht vor der Vertreterversammlung in München am 18. 04. 2006
Creators: name: Schöneich, Rainer
Publisher: name: Forum Classicum
Year: 2017

description: -
description: Forum Classicum, Nr. 2 (2006): Forum Classicum
title: Υλοποίηση FEC decoder σε FPGA χαμηλής κατανάλωσης
title: Implementation of a FEC decoder on a low power FPGA
Creators: name: Χονδρουλης Ιωαννης
Publisher: name: Technical University of Crete
Year: 2018

description: Ένα Ασύρματο Δίκτυο Αισθητήρων (ΑΔΑ) αποτελείται από κόμβους που συλλέγουν δεδομένα λαμβάνοντας μετρήσεις από το φυσικό περιβάλλον, τα επεξεργάζονται και τα αποστέλλουν ασύρματα σε άλλους κόμβους-συλλέκτες ή άλλα συστήματα επεξεργασίας Στα δίκτυα αυτά γίνεται χρήση υπολογιστικών στοιχείων με εξαιρετικά περιορισμένες δυνατότητες και αντίστοιχα πολύ μικρή κατανάλωση ενέργειας. Κατά συνέπεια, για την πραγματοποίηση της ασύρματης επικοινωνίας χρησιμοποιούνται πολύ απλοί μηχανισμοί και πρωτόκολλα ώστε από τη μία να ελαχιστοποιηθεί η κατανάλωση ισχύος και από την άλλη να μπορούν οι απλοί μικροεπεξεργαστές να διαχειριστούν το υπολογιστικό κόστος. Η εργασία αυτή προτείνει τη χρήση αισθητά πιο περίπλοκων μηχανισμών επικοινωνίας που επιτρέπουν την αποτελεσματική ανταλλαγή δεδομένων σε περιπτώσεις υψηλού θορύβου στο κανάλι επικοινωνίας και τη μετάδοση σε μεγαλύτερες αποστάσεις. Για την εφαρμογή των μηχανισμών αυτών φυσικά απαιτείται περισσότερη επεξεργαστική ισχύς, άρα και ενεργειακοί πόροι, από τους κόμβους του δικτύου για τη μετάδοση ενός πακέτου δεδομένων. Ταυτόχρονα όμως μπορούν να μειωθούν δραματικά οι επαναμεταδόσεις πακέτων, και άρα να προκύψει σημαντική συνολική εξοικονόμηση ενέργειας παρά το αυξημένο κόστος μετάδοσης ανά πακέτο.
Transverse energy and charged particle production in heavy-ion collisions: From RHIC to LHC
Creators: name: Sahoo, Raghunath
name: Mishra, Aditya Nath
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We study the charged particle and transverse energy production mechanism from AGS, SPS, RHIC to LHC energies in the framework of nucleon and quark participants. At RHIC and LHC energies, the number of nucleons-normalized charged particle and transverse energy density in pseudorapidity, which shows a monotonic rise with centrality, turns out to be an almost centrality independent scaling behaviour when normalized to the number of participant quarks. A universal function which is a combination of logarithmic and power-law, describes well the charged particle and transverse energy production both at nucleon and quark participant level for the whole range of collision energies. Energy dependent production mechanisms are discussed both for nucleonic and partonic level. Predictions are made for the pseudorapidity densities of transverse energy, charged particle multiplicity and their ratio (the barometric observable, $\frac{dE_{\rm{T}}/dη}{dN_{\rm{ch}}/dη} ~\equiv \frac{E_{\rm{T}}}{N_{\rm{ch}}}$) at mid-rapidity for Pb+Pb collisions at $\sqrt{s_{\rm{NN}}}=5.5$ TeV. A comparison with models based on gluon saturation and statistical hadron gas is made for the energy dependence of $\frac{E_{\rm{T}}}{N_{\rm{ch}}}$.
description: 19 pages, 7 figures
Maximum-likelihood estimation in ptychography in the presence of Poisson-Gaussian noise statistics
Creators: name: Seifert, Jacob
name: Shao, Yifeng
name: van Dam, Rens
name: Bouchet, Dorian
name: van Leeuwen, Tristan
name: Mosk, Allard P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computational Physics (physics.comp-ph)
subject: Optics (physics.optics)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: Optical measurements often exhibit mixed Poisson-Gaussian noise statistics, which hampers image quality, particularly under low signal-to-noise ratio (SNR) conditions. Computational imaging falls short in such situations when solely Poissonian noise statistics are assumed. In response to this challenge, we define a loss function that explicitly incorporates this mixed noise nature. By using maximum-likelihood estimation, we devise a practical method to account for camera readout noise in gradient-based ptychography optimization. Our results, based on both experimental and numerical data, demonstrate that this approach outperforms the conventional one, enabling enhanced image reconstruction quality under challenging noise conditions through a straightforward methodological adjustment.
description: Contains main and supplementary documents
libMBD: A general-purpose package for scalable quantum many-body dispersion calculations
Creators: name: Hermann, Jan
name: Stöhr, Martin
name: Góger, Szabolcs
name: Chaudhuri, Shayantan
name: Aradi, Bálint
name: Maurer, Reinhard J.
name: Tkatchenko, Alexandre
Publisher: name: arXiv
Year: 2023
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Many-body dispersion (MBD) is a powerful framework to treat van der Waals (vdW) dispersion interactions in density-functional theory and related atomistic modeling methods. Several independent implementations of MBD with varying degree of functionality exist across a number of electronic structure codes, which both limits the current users of those codes and complicates dissemination of new variants of MBD. Here, we develop and document libMBD, a library implementation of MBD that is functionally complete, efficient, easy to integrate with any electronic structure code, and already integrated in FHI-aims, DFTB+, VASP, Q-Chem, CASTEP, and Quantum ESPRESSO. libMBD is written in modern Fortran with bindings to C and Python, uses MPI/ScaLAPACK for parallelization, and implements MBD for both finite and periodic systems, with analytical gradients with respect to all input parameters. The computational cost has asymptotic cubic scaling with system size, and evaluation of gradients only changes the prefactor of the scaling law, with libMBD exhibiting strong scaling up to 256 processor cores. Other MBD properties beyond energy and gradients can be calculated with libMBD, such as the charge-density polarization, first-order Coulomb correction, the dielectric function, or the order-by-order expansion of the energy in the dipole interaction. Calculations on supramolecular complexes with MBD-corrected electronic structure methods and a meta-review of previous applications of MBD demonstrate the broad applicability of the libMBD package to treat vdW interactions.
description: 14 pages, 6 figures, submitted to JCP
title: Επιθεώρηση γραμμών μεταφοράς ηλεκτρικής ενέργειας με χρήση κατάλληλα εξοπλισμένου μη επανδρωμένου αεροσκάφους (UAV)
title: Power transmission lines inspection using properly equipped unmanned aerial vehicle (UAV)
Creators: name: Ζορμπας Αλεξανδρος
Publisher: name: Technical University of Crete
Year: 2018

description: Η επιθεώρηση γραμμών μεταφοράς ηλεκτρικής ενέργειας αποτελεί μία από πολλές
εφαρμογές των μη-επανδρωμένων αεροσκαφών. Η παρούσα εργασία εξετάζει την
αποτελεσματικότητα της χρήσης βασικών μεθόδων επεξεργασίας εικόνας, την
εύρεση των περιορισμών τους σε γλώσσα Matlab και τη συναρμολόγηση ενός μη-
επανδρωμένου αεροσκάφους. Προτείνονται δύο μεθοδολογίες, οι οποίες έχουν ως
κοινά χαρακτηριστικά τη μετατροπή εικόνας σε grayscale, ανίχνευση ακμών με
Laplacian of Gaussian, εφαρμογή του Μετασχηματισμού Hough και δημιουργία
περιοχής ενδιαφέροντος γύρω από κάθε εντοπισμένο καλώδιο. Η πρώτη εξάγει τις
περιοχές από την εικόνα, αφού πρώτα γίνει επεξεργασία ενός αριθμού αρχικών
εικόνων για την επιτυχή ανίχνευση των καλωδίων. Η δεύτερη μεθοδολογία
εστιάζεται στο κεντρικό μέρος της εικόνας, χωρίζοντας το σε τρία τμήματα
(επιμέρους περιοχές ενδιαφέροντος) χωρίς να χρειάζεται να προηγηθεί εντοπισμός
των καλωδίων. Στη περίπτωση ύπαρξης βλάβης (κομμένο καλώδιο), οι
μεθοδολογίες αξιοποιούν χαρακτηριστικά των γραμμών, όπως η συνέχεια τους, η
ομοιότητα και η σταθερή μεταξύ τους απόσταση για τη διάκριση τους από άλλες
δομές που εμφανίζονται στην εικόνα, αναγνωρίζοντας την απουσία καλωδίου
description: The inspection of power transmission lines is one of many applications of
unmanned aircraft. This paper examines the effectiveness of using basic image
processing methods, finding their limitations in Matlab and assembling a
unmanned aircraft. Two methodologies are proposed which have in common
features like grayscale image conversion, Laplacian of Gaussian edge detection,
application of Hough Transformation and creation of areas of interest around the
transmission lines. The first one extracts the areas from the image after processing a number of original images in order to detect successfully the lines. The second methodology focuses on the central part of the image, dividing it into three sections (smaller areas of interest) without having to locate the lines first. In the case of a broken line, the methodologies use special line features such as their
continuity, resemblance and constant distance between them to distinguish them
from other structures shown in the image, detecting their absence.
Pilemostoma fastuosum (SCHALLER, 1783) (Coleoptera: Chrysomelidae) – drugie stwierdzenie na Nizinie Mazowieckiej w XXI wieku. / Pilemostoma fastuosum (SCHALLER, 1783) (Coleoptera: Chrysomelidae): second record in the Mazovian Lowland in the 21st century.
Creators: name: OŁDAK, Krystian Adam
Publisher: name: Polskie Towarzystwo Entomologiczne
Year: 2024
Subjects: Cassidinae, distribution, faunistics, east-central Poland

description: This note presents the second record of Pilemostoma fastuosum (SCHALLER, 1783) (Coleoptera: Chrysomelidae) in the 21st century in the Mazovian Lowland, which is also the fourth known record in this region. The specimen of the species was found in Mińsk Mazowiecki in 2023 and was most likely brought from the Sphagnum bog near Józefów.
High-efficiency single photon emission from a silicon T-center in a nanobeam
Creators: name: Lee, Chang-Min
name: Islam, Fariba
name: Harper, Samuel
name: Buyukkaya, Mustafa Atabey
name: Higginbottom, Daniel
name: Simmons, Stephanie
name: Waks, Edo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Color centers in Si could serve as both efficient quantum emitters and quantum memories with long coherence times in an all-silicon platform. Of the various known color centers, the T center holds particular promise because it possesses a spin ground state that has long coherence times. But this color center exhibits a long excited state lifetime which results in a low photon emission rate, requiring methods to extract photon emission with high efficiency. We demonstrate high-efficiency single photon emission from a single T center using a nanobeam. The nanobeam efficiently radiates light in a mode that is well-matched to a lensed fiber, enabling us to collect over 70% of the T center emission directly into a single mode fiber. This efficiency enables us to directly demonstrate single photon emission from the zero phonon line, which represents the coherent emission from the T center. Our results represent an important step towards silicon-integrated spin-photon interfaces for quantum computing and quantum networks.
description: 9 pages, 4 figures
Two-mode photon-added entangled coherent states and their entanglement properties
Creators: name: Chatterjee, Arpita
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 81V80

description: An entangled quantum state is considered by applying a local photon excitation to each mode of an entangled coherent state. The entanglement property is investigated in terms of the entropy of entanglement. It is shown that applying a photon addition can improve the amount of entanglement. It is also examined that in a specific region of parameters, the state $|{ψ_1^-(α, m, n)}\rangle$ is least entangled when photon excitation is minimum. We study the statistical properties of such states by employing the quasi-probability functions.
description: 8 pages, 4 figures
Static and spherically symmetric wormholes in metric-affine theories of gravity
Creators: name: De Falco, Vittorio
name: Capozziello, Salvatore
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider static and spherically symmetric wormhole solutions in extended metric-affine theories of gravity supposing that stability and traversability of these objects can be achieved by means of the geometric degrees of freedom. In particular, we consider $f(R)$ metric, $f(T)$ teleparallel, and $f(Q)$ symmetric teleparallel models where curvature, torsion, and non-metricity rule entirely the background geometry without invoking any exotic energy-momentum tensor as matter field source. Starting from the flaring out and null energy conditions, we gather together a series of constraints which allow us to state that stable and traversable wormholes can be derived in a purely geometric approach resorting to modified gravity theories with more degrees of freedom than general relativity.
description: 10 pages, 1 table; accepted for publication on Phys. Rev. D
The Galactic Interstellar Object Population: A Framework for Prediction and Inference
Creators: name: Hopkins, Matthew J.
name: Lintott, Chris
name: Bannister, Michele T.
name: Mackereth, J. Ted
name: Forbes, John C.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Milky Way is thought to host a huge population of interstellar objects (ISOs), numbering approximately $10^{15}\mathrm{pc}^{-3}$ around the Sun, which are formed and shaped by a diverse set of processes ranging from planet formation to galactic dynamics. We define a novel framework: firstly to predict the properties of this Galactic ISO population by combining models of processes across planetary and galactic scales, and secondly to make inferences about the processes modelled, by comparing the predicted population to what is observed. We predict the spatial and compositional distribution of the Galaxy's population of ISOs by modelling the Galactic stellar population with data from the APOGEE survey and combining this with a protoplanetary disk chemistry model. Selecting ISO water mass fraction as an example observable quantity, we evaluate its distribution both at the position of the Sun and averaged over the Galactic disk; our prediction for the Solar neighbourhood is compatible with the inferred water mass fraction of 2I/Borisov. We show that the well-studied Galactic stellar metallicity gradient has a corresponding ISO compositional gradient. We also demonstrate the inference part of the framework by using the current observed ISO composition distribution to constrain the parent star metallicity dependence of the ISO production rate. This constraint, and other inferences made with this framework, will improve dramatically as the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) progresses and more ISOs are observed. Finally, we explore generalisations of this framework to other Galactic populations, such as that of exoplanets.
description: Accepted to AJ
Fisher-KPP propagation in the presence of a line: further effects
Creators: name: Berestycki, Henri
name: Roquejoffre, Jean-Michel
name: Rossi, Luca
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35K57, 92D25, 35B40, 35K40, 35B53

description: This paper is a continuation of [2] where a new model of biological invasions in the plane directed by a line was introduced. Here we include new features such as transport and reaction terms on the line. Their interaction with the pure diffusivity in the plane is quantified in terms of enhancement of the propagation speed. We establish conditions that determine whether the spreading speed exceeds the standard Fisher KPP invasion speed. These conditions involve the ratio of the diffusivities on the line and in the field, the transport term and the reactions. We derive the asymptotic behaviour for large diffusions or large transports. We also discuss the biological interpretation of these findings.
Mise en oeuvre d'une classe inversée
Creators: name: Poulain, Pierre
Publisher: name: Zenodo
Year: 2022
Subjects: pédagogie
classe inversée
classe renversée
pédagogies actives
programmation Python
Python

description: Présentation donnée lors de la Journée des initiatives pédagogiques à l'Université Paris Cité le 8 décembre 2022
Mise en oeuvre d'une classe inversée
Creators: name: Poulain, Pierre
Publisher: name: Zenodo
Year: 2022
Subjects: pédagogie
classe inversée
classe renversée
pédagogies actives
programmation Python
Python

description: Présentation donnée lors de la Journée des initiatives pédagogiques à Université Paris Cité, le 8 décembre 2022
title: Ανάπτυξη εφαρμογής Αndroid για την υποστήριξη της αιμοληψίας και την διαχείριση νοσοκομειακής τράπεζας αίματος με χρήση της τεχνολογίας NFC

title: Αndroid application development for blood donation events handling and blood bank management system utilizing NFC technology

Creators: name: Πουλη Χριστινα
Publisher: name: Technical University of Crete
Year: 2018

description: To e-blood είναι μια android εφαρμογή για την διαχείριση των ασκών μιας τράπεζας αίματος και την υποστήριξη της αιμοληψίας, μέσω της καινοτόμας σήμανσης των ασκών με NFC ετικέτες και όχι barcode όπως γίνεται εως σήμερα.
Η κάθε μονάδα αίματος πλέον φέρει τις πληροφορίες που την περιγράφουν και δε χρειάζεται να παρεμβληθεί η πρόσβαση σε μια βάση δεδομένων για την ανακτησή τους.Το e-blood υποστηρίζει την αιμοληψία με την διαδικασία της καταχώρησης των αιμοδοτών και των συνεδριών αιμοληψίας που πραγματοποιούν. Στο κομμάτι της διαχείρισης της τράπεζας αίματος, δίνει την δυνατότητα στους χρήστες να ικανοποιούν αιτήσεις μεταγγίσεων για εσωτερικούς ασθενής του νοσοκομείου, με τρόπο που διασφαλίζει ότι τα αποθέματα προς διαθεση είναι ελεγμένα και διαμοιρασμένα με σύνεση, χωρις φαινόμενα κατασπατάλησης των πόρων.
Heterotrophic Carbon Fixation in a Salamander-Alga Symbiosis
Creators: name: Burns, John A.
name: Kerney, Ryan
name: Duhamel, Solange
Publisher: name: Columbia University
Year: 2020
Subjects: subject: Symbiosis
subject: Spotted salamander
subject: Green algae
subject: Carbon cycle (Biogeochemistry)
subject: Microbiology
subject: FOS: Biological sciences

description: The unique symbiosis between a vertebrate salamander, Ambystoma maculatum, and unicellular green alga, Oophila amblystomatis, involves multiple modes of interaction. These include an ectosymbiotic interaction where the alga colonizes the egg capsule, and an intracellular interaction where the alga enters tissues and cells of the salamander. One common interaction in mutualist photosymbioses is the transfer of photosynthate from the algal symbiont to the host animal. In the A. maculatum–O. amblystomatis interaction, there is conflicting evidence regarding whether the algae in the egg capsule transfer chemical energy captured during photosynthesis to the developing salamander embryo. In experiments where we took care to separate the carbon fixation contributions of the salamander embryo and algal symbionts, we show that inorganic carbon fixed by A. maculatum embryos reaches 2% of the inorganic carbon fixed by O. amblystomatis algae within an egg capsule after 2 h in the light. After 2 h in the dark, inorganic carbon fixed by A. maculatum embryos is 800% of the carbon fixed by O. amblystomatis algae within an egg capsule. Using photosynthesis inhibitors, we show that A. maculatum embryos and O. amblystomatis algae compete for available inorganic carbon within the egg capsule environment. Our results confirm earlier studies suggesting a role of heterotrophic carbon fixation during vertebrate embryonic development. Our results also show that the considerable capacity of developing A. maculatum embryos for inorganic carbon fixation precludes our ability to distinguish any minor role of photosynthetically transferred carbon from algal symbionts to host salamanders using bicarbonate introduced to the egg system as a marker.
Identifying strongly lensed gravitational waves through their phase consistency
Creators: name: Ezquiaga, Jose María
name: Hu, Wayne
name: Lo, Rico K. L.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Strongly lensed gravitational waves (GWs) from binary coalescence manifest as repeated chirps from the original merger. At the detectors, the phase of the lensed GWs and its arrival time differences will be consistent modulo a fixed constant phase shift. We develop a fast and reliable method to efficiently reject event pairs that are not-lensed copies and appropriately rank the most interesting candidates. Our method exploits that detector phases are the best measured GW parameter, with errors only of a fraction of a radian and differences across the frequency band that are better measured than the chirp mass. The arrival time phase differences also avoid the shortcomings of looking for overlaps in highly non-Gaussian sky maps. Our basic statistic determining the consistency with lensing is the distance between the phase posteriors of two events and it directly provides information about the lens-source geometry which helps inform electromagnetic followups. We demonstrate that for simulated signals of not-lensed binaries specifically chosen with many coincident properties so as to trigger false lensing alarms none of the pairs have phases closer than $3σ$, and most cases reject the lensing hypothesis by $5σ$. Looking at the latest catalog, GWTC3, we find that only $6\%$ of the pairs are consistent with lensing at 99\% confidence level. Moreover, we reject about half of the pairs that would otherwise favor lensing by their parameter overlaps and demonstrate good correlation with detailed joint parameter estimation results. This reduction of the false alarm rate will be of paramount importance in the upcoming observing runs and the eventual discovery of lensed GWs. Our code is publicly available and could be applied beyond lensing to test possible deviations in the phase evolution from modified theories of gravity and constrain GW birefringence.
description: 14+7 pages, 12+7 figures, 2 tables, code at https://github.com/ezquiaga/phazap. Matches PRD version
Deductive Approach to Biogenesis: A Review
Creators: name: Hengeveld, Rob
Publisher: name: Zenodo
Year: 2021
Subjects: Biogenesis
thermodynamics
DNA
amino acids

description: This article reviews the main arguments on the nature of the early start up of life. It first puts the biogenetical processes into a physical and systems-theoretical perspective. Biogenesis in this case would not be about the construction of individual molecules according to a chemical approach, but about building up an energetically self-sustaining, dynamically-organised chemical system from scratch. Initially, this system would have separated out from generally operating physicochemical processes, gradually becoming more independent of them. As a system, it had to build up its structure stepwise, each stage being more complex and stable than the previous one, without, however, changing its basic structure too much; as long as the structure of a system stays intact, it still operates in the same way even if chemical constituents change. This property of a system became especially useful when the systems, which had already evolved and operated for some 1.3 billion years, had to adapt to new environmental conditions at the time of the Great Oxygen Event, the GOE, some 2.5 billion years ago. As energy processing systems, their constituent molecules carry the energy and can as such be replaced by other, more efficient ones as soon as the system requires, or as soon as external chemical conditions change. It is the energy flow that started up initially and that has kept running both uninterruptedly and faster ever since, and it is the energy flow that shaped both the system’s structure as well as that of its constituent molecules. For this flow to continue, the system kept changing chemically, but for this to happen the general physical conditions of the environment need to have remained more or less the same. This automatically shifts the general problem from a chemical one to one of thermodynamics and physical inorganic chemistry. It also implies that biogenesis does not concern the origin and evolution of individual chemical components, rather it concerns the splitting off of processes of intense interactions, which gradually diverge from those in the early oceans to form an increasingly more distinct system run by a flow of energy.
title: Δορυφορικά συγκροτήματα κατοίκησης στο Λαύριο των ορυχείων
title: Orbiting housing complexes in the mining town of Lavrio

Creators: name: Γκιωνη Αννα-Μαριεττα
Publisher: name: Technical University of Crete
Year: 2019

description: Αφετηρία της εν λόγω ερευνητικής εργασίας υπήρξε η αμιγής εμφάνιση της εργατικής κατοικίας την περίοδο του σχηματισμού της νεότερης πόλης του Λαυρίου, η οποία δημιουργήθηκε κι εξελίχθηκε παράλληλα με τη μεταλλευτική και μεταλλουργική κυρίως βιομηχανία της χώρας. H συνύπαρξη των βιομηχανικών οικισμών με τη λειτουργία των μεταλλείων συνετέλεσαν στη δημιουργία, στη διαμόρφωση καθώς και στην εξέλιξη του ιδιόμορφου ύφους της πόλεως.
Πρόθεση της έρευνας είναι η διερεύνηση και η αναγνώριση των επιρροών ανατολής και δύσης στην κατοικία εμπερικλείοντας στη μελέτη την εξέλιξη της οργανωμένης δόμησης στον ευρωπαϊκό χώρο τέλη 19ου αιώνα και αρχές 20ου, μια χρονική περίοδο έντονης μετακίνησης πληθυσμών και ριζικών αλλαγών στον τομέα της κατοίκησης.
Στην πορεία, η μελέτη εστιάζει στους πληθυσμούς οι οποίοι κατέφτασαν στην περιοχή της Λαυρεωτικής την περίοδο 1865 έως 1930 με σκοπό την εύρεση εργασίας, καθώς και στον τρόπο με τον οποίο μεταφράστηκε αυτό αρχιτεκτονικά φέροντας στοιχεία διαφορετικών πολιτισμικών υποβάθρων. Εν ολίγοις, επιλέγονται 4 οικισμοί και εμβαθύνουμε στην εσωτερική διάρθρωσή τους. Αναλύεται επίσης ο σχεδιασμός που ακολουθήθηκε από τα εκάστοτε προγράμματα κοινωνικής κατοίκησης, δημιουργώντας παράλληλα μια ενιαία χωρική ολότητα.
Tέλος, εξετάζονται τα πορίσματα της έρευνας σε συνδυασμό με την ανάλυση που προηγήθηκε και τίθεται το ερώτημα ποιος θα είναι ο νέος ρόλος του Λαυρίου ως προς την υποδοχή και στέγαση πληθυσμών εν όψει των αλλαγών που επίκεινται.

description: The starting point of this research has been the workers’ housing development during the period of Lavrio’s new formation as a planned city, which was created and evolved alongside the country’s mining and metallurgical industry. The coexistence of the industrial settlements with the mining operations contributed to the creation of a particular style.
The aim of the research is to investigate and recognise the influences of eastern and
western culture in the core of housing, tracing back to the evolution of workers’ housing during the late 19th and early 20th century in Europe, a period of mass migration and radical changes in the housing sector.
In the process, we focus on the people who arrived in the area of Lavreotiki from 1865 to 1930, as well as on how their socio-cultural background was expressed with spatial elements. In short, four settlements are selected according to these criteria and their internal structure is examined. The strategy followed by the social housing programs is also analysed, while creating the dynamics of city formation.
Finally, the findings of the survey, in conjunction with the previous analysis, are being   considered, while the question arises as to which role the city of Lavrio would play in the housing sector in view of the changes that are taking place.
Mise en oeuvre d'une classe inversée
Creators: name: Poulain, Pierre
Publisher: name: Zenodo
Year: 2022
Subjects: pédagogie
classe inversée
classe renversée
pédagogies actives
programmation Python
Python
WooClap

description: Présentation donnée lors de la Journée des initiatives pédagogiques à Université Paris Cité, le 8 décembre 2022
Radio Unnameable
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2019
Subjects: Watergate Affair (1972-1974)
Politics and government
Traffic accidents

description: Caller talks about the early closure of Boston schools. He discusses compares the coverage of the Watergate and of the Chappaquiddick scandals, saying that conservatives are given unfair coverage and unfair justice. Karen Landy and Paulette Spicer are guests. One performs music. They read poems by Mark Landy.
Einstein-Rosen bridge from the minimal length
Creators: name: Jusufi, Kimet
name: Moulay, Emmanuel
name: Mureika, Jonas
name: Ali, Ahmed Farag
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use a string T-duality corrected pair of regular black holes to construct an Einstein-Rosen (ER) bridge with the wormhole throat proportional to the zero-point (Planck) length. This may be a geometric realization of quantum entanglement for particle/antiparticle pairs. We point out that for an extreme mass configuration consisting of a black hole pair, one can have an ER bridge with a horizon area that coincides with the Bekenstein minimal area bound along with a wormhole mass proportional to the Planck mass. This could be related to gravitational self-completeness with quantum mechanical mass limits. We also discuss the ER bridge for sub-Planckian mass horizonless wormholes and show this admits a region of negative energy at the throat, which we posit to be related to a particle of negative mass generated by quantum fluctuations or the Casimir effect. We argue that Hawking radiation could be the best way for the geometric realization of quantum entanglement for particle/antiparticle pairs emitted by black holes. This sheds new light on the ER=EPR conjecture.
description: 9 pages, published in EPJC
title: Αποτυπώματα των παραδοσιακών κήπων στο σύγχρονο σχεδιασμό ανοιχτών χώρων: το παράδειγμα της Κίνας και της Ιαπωνίας
title: Τhe imprints of traditional gardens in the modern designing of open spaces: the example of China and Japan
Creators: name: Γιοβα Ελενη
name: Γιαγκουλα Βασιλικη
Publisher: name: Technical University of Crete
Year: 2019

description: Το ερευνητικό ενδιαφέρον της παρούσας εργασίας αποτελεί η μελέτη των κινεζικών και ιαπωνικών κήπων και τα αποτυπώματα αυτών στις σύγχρονες πρακτικές σχεδιασμού στην Κίνα και την Ιαπωνία. Η δομή της εργασίας περιλαμβάνει πέντε ενότητες. Συγκεκριμένα, στην πρώτη ενότητα γίνεται αναφορά των φιλοσοφικών ρευμάτων, όπου καθιέρωσαν κάποιες βασικές αρχές της κινεζικής και ιαπωνικής σχεδίασης κήπων. Η δεύτερη ενότητα περιλαμβάνει μία αναδρομή των ιστορικών περιόδων της Κίνας και της Ιαπωνίας, από τη δημιουργία του πρώτου κήπου μέχρι τον 20o αιώνα. Στη τρίτη ενότητα, παραθέτονται οι βασικές αρχές, τα χαρακτηριστικά στοιχεία και οι συμβολισμοί όπου χρησιμοποιούνται στο σχεδιασμό των κήπων αντίστοιχα. Στην τέταρτη ενότητα, πραγματοποιείται μια ανάλυση έξι παραδειγμάτων, τριών από Κίνα και άλλων τριών από Ιαπωνία με στόχο τον εντοπισμό σχεδιαστικών πρακτικών από τους παραδοσιακούς κήπους. Τα παραδείγματα είναι κατανεμημένα σε τρεις κατηγορίες με βάση την κλίμακα, έναν ιδιωτικό κήπο μίας κατοικίας, μία πλατεία και ένα δημόσιο πάρκο. Στο τέλος, γίνεται εξαγωγή γενικών συμπερασμάτων για όλα τα θέματα που έχουν αναλυθεί στην εργασία. Στο σύνολό της, η εργασία αποτελεί πεδίο προβληματισμού και έρευνας για τη σχέση του ανθρώπου με τη φύση και τη θρησκεία που εμφανίζεται έντονα στην Ανατολή και το πώς η φιλοσοφία των κινεζικών και ιαπωνικών κήπων ενσωματώνεται στις σύγχρονες πρακτικές σχεδιασμού στην Ανατολή.
Pilot Study of Return of Genetic Results to Patients in Adult Nephrology
Creators: name: Nestor, Jordan Gabriela
name: Marasa, Maddalena
name: Milo-Rasouly, Hila
name: Groopman, Emily
name: Husain, Syed Ali
name: Mohan, Sumit
name: Fernandez, Hilda Elena
name: Aggarwal, Vimla S.
name: Ahram, Dina
name: Vena, Natalie
name: Bogyo, Kelsie
name: Bomback, Andrew S.
name: Radhakrishnan, Jai
name: Appel, Gerald B.
name: Ahn, Wooin
name: Cohen, David Jonathan
name: Canetta, Pietro A.
name: Dube, Geoffrey
name: Rao, Maya K.
name: Morris, Heather
name: Crew, Russell J.
name: Sanna-Cherchi, Simone
name: Kiryluk, Krzysztof
name: Gharavi, Ali G.
Publisher: name: Columbia University
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Genomics
subject: Human chromosome abnormalities--Diagnosis
subject: Nephrology
subject: Kidneys--Diseases--Genetic aspects
subject: Kidneys--Diseases--Treatment

description: Background and objectives: Actionable genetic findings have implications for care of patients with kidney disease, and genetic testing is an emerging tool in nephrology practice. However, there are scarce data regarding best practices for return of results and clinical application of actionable genetic findings for kidney patients. Design, setting, participants and measurements: We developed a Return of Results workflow in collaborations with clinicians for the retrospective re-contact of adult nephrology patients who had been recruited into a biobank research study for exome sequencing and were identified to have medically actionable genetic findings. Results: Using this workflow, we attempted to re-contact a diverse pilot cohort of 104 nephrology research participants with actionable genetic findings encompassing 34 different monogenic etiologies of nephropathy and five single-gene disorders recommended by the American College of Medical Genetics and Genomics for return as medically actionable secondary findings. We successfully re-contacted 64 (62%) participants and returned results to 41 (39%) individuals. In each case, the genetic diagnosis had meaningful implications for the patients’ nephrology care. Through implementation efforts and qualitative interviews with providers, we identified over 20 key challenges associated with returning results to study participants, and found that physician knowledge gaps in genomics was a recurrent theme. We iteratively addressed these challenges to yield an optimized workflow, which included standardized consultation notes with tailored management recommendations, monthly educational conferences on core topics in genomics, and a curated list of expert clinicians for cases requiring extra-nephrologic referrals. Conclusions: Developing the infrastructure to support return of genetic results in nephrology was resource-intensive, but presented potential opportunities for improving patient care.
title: Χωρικές μεταφράσεις της οικειότητας: το παράδειγμα της κατοικίας
title: Spatial translations of intimacy: the residence example
Creators: name: Κυριαζιδη-Αναγνωστοπουλου Δαναη
Publisher: name: Technical University of Crete
Year: 2019

description: The present research attempts to explore and highlight the elements that
create an intimate space, investigating at the same time ambiguous spaces
such as ruins, in which the familiar is not visible at first glance, focusing
finally at residence as a major spatial imprint of intimacy.
It will be initially analyzed the condition of spatial intimacy in terms of
concepts such as atmosphere, crypticity, tactility. Furthermore, in order to try
to explore the familiar in all of it’s coordinates, an approach will be made of
the ruin as the spatial boundary between the familiar and the unfamiliar. To
conclude with, tangible architectural examples of residences will be presented,
rendering and bringing spatial and synthetic conditions of intimacy.
description: Η παρούσα ερευνητική εργασία επιχειρεί να διερευνήσει και να αναδείξει τα στοιχεία που κάνουν έναν χώρο οικείο, εξετάζοντας ακόμα και χώρους διφορούμενους ως προς αυτή την ιδιότητα όπως τα ερείπια, χώρους που δεν φέρουν μέσα τους το οικείο με την πρώτη ματιά, εστιάζοντας τελικά στην
κατοικία ως κύριο χωρικό αποτύπωμα οικειότητας.
Θα αναλυθεί αρχικά η συνθήκη της χωρικής οικειότητας υπό το πρίσμα
εννοιών όπως η ατμόσφαιρα, η κρυπτότητα, η απτικότητα. Στη συνέχεια θα
γίνει μία προσέγγιση του ερειπίου ως το χωρικό μεταίχμιο μεταξύ του οικείου
και του ανοίκειου, σε μία προσπάθεια να διερευνηθεί το οικείο σε όλες του τις
συντεταγμένες. Εν τέλει, η έρευνα καταλήγει σε απτά αρχιτεκτονικά παραδείγματα κατοικιών που αποδίδουν, φέρουν χωρικές και συνθετικές συνθήκες οικειότητας.
title: Κυμαϊκός νεοκλασικισμός. Ζητήματα ανθεκτικότητας
title: Cymaic neoclassicism. Endurance issues
Creators: name: Λαγος Αντωνιος
Publisher: name: Technical University of Crete
Year: 2019

description: Σκοπός της εργασίας είναι η  διερεύνηση της τοπικής παραλλαγής του νεοκλασσικισμού στην Ευβοϊκή Κύμη γνωστού και ως «Κυμαϊκού» νεοκλασικισμού, όπως αυτός εκφράστηκε κυρίως μέσα από την εξέλιξη της  τυπολογίας των κατοικιών. Η χρονική περίοδος που μας απασχολεί, αφορά την περίοδο ακμής  της Κύμης και εκτείνεται από τη σύσταση του ελληνικού κράτος μέχρι τις αρχές  του 20ου αιώνα.
Μελετώνται τα δάνεια από την ευρωπαϊκή αρχιτεκτονική , ο διάλογος που ανέπτυξαν με την ανώνυμη αρχιτεκτονική της ευβοϊκής πόλης και επιχειρείται η ερμηνεία τους καθώς και η ανθεκτικότητα της  παραδοσιακής αρχιτεκτονικής και πόλης στα ρεύματα αυτά εντοπισμένη στο πεδίο της τυπολογίας της κατοικίας. Αντικείμενο της  έρευνας αποτελούν  τα κτήρια που εντάσσονται στο ρεύμα αυτό και αφορούν δημόσια και ιδιωτικά  οικοδομήματα  του οικισμού.