cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Ανάπτυξη ενός ολοκληρωμένου συστήματος αυτοματοποιημένης αναγνώρισης πινακίδων κυκλοφορίας οχημάτων ως ενσωματωμένη λύση μηχανικής μάθησης σε εφαρμογή Android
title: Automatic license plate recognition system development as an Android on-device ML application
titleType: AlternativeTitle
Creators: name: Λεονταρίδης, Σπυρίδων
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2022
Subjects: subject: ALPR
subject: Java
subject: Kotlin
subject: On-device ML
subject: Google maps API
subject: RESTfull Web Services
subject: APIs
subject: NoSQL
subject: MongoDB
subject: Java Spring Boot Framework
subject: Android Studio
subject: IntelliJ
subject: TensorFlow
subject: DBSCAN
subject: QGIS
subject: Transfer learning

description: Στο πλαίσιο της παρούσας μεταπτυχιακής διατριβής, αναπτύχθηκε ένα ολοκληρωμένο σύστημα αυτοματοποιημένης αναγνώρισης πινακίδων κυκλοφορίας (ALPR), το οποίο έχει ενσωματωθεί σε εφαρμογή για το λειτουργικό σύστημα Android. Μέσω της εφαρμογής, οι χρήστες έχουν τη δυνατότητα να δηλώνουν τους αριθμούς κυκλοφορίας των οχημάτων που τους ενδιαφέρουν και αναζητούν για οποιονδήποτε λόγο (κλοπή, τροχαίο με εγκατάλειψη κ.α.), να ειδοποιούνται σε περίπτωση που εντοπιστεί κάποιο από αυτά, να σαρώνουν σε πραγματικό χρόνο τις πινακίδες κυκλοφορίας των διερχόμενων οχημάτων, καθώς και να ανατρέχουν στο ιστορικό των σαρώσεών τους, χρησιμοποιώντας χωροχρονικά κριτήρια. Επιπλέον, προβλέπεται η δυνατότητα επεξεργασίας και ανάλυσης των δεδομένων που έχουν συλλεχθεί, με σκοπό, την εξαγωγή συμπερασμάτων, τα οποία και θα επιτρέπουν την αποτελεσματικότερη κατανομή των διαθέσιμων πόρων (ανθρώπινο δυναμικό και συσκευές), αλλά και την πρόβλεψη πιθανότερων θέσεων μελλοντικών συμβάντων. Η εφαρμογή αναπτύχθηκε σε γλώσσες προγραμματισμού Java και Kotlin, ενώ παράλληλα, τεχνολογίες όπως, on-device ML (μηχανική μάθηση) της Google, χρησιμοποιήθηκαν για τον εντοπισμό και την αναγνώριση των πινακίδων κυκλοφορίας. Τέλος, η εφαρμογή υποστηρίζεται από μία NoSQL βάση δεδομένων (MongoDB) και κατάλληλα Web Services, που αναπτύχθηκαν σε περιβάλλον Java Spring Boot.
An Excited-State-Specific Pseudoprojected Coupled-Cluster Theory
Creators: name: Tuckman, Harrison
name: Neuscamman, Eric
Publisher: name: arXiv
Year: 2023
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We present an excited-state-specific coupled-cluster approach in which both the molecular orbitals and cluster amplitudes are optimized for an individual excited state. The theory is formulated via a pseudoprojection of the traditional coupled-cluster wavefunction that allows correlation effects to be introduced atop an excited state mean field starting point. The approach shares much in common with ground state CCSD, including size extensivity and an $N^6$ cost scaling. Preliminary numerical tests show that, when augmented with $N^5$-cost perturbative corrections for key terms, the method can improve over excited-state-specific second order perturbation theory in valence, charge transfer, and Rydberg states.
description: 17 pages, 2 figures, 9 tables Updated to reflect changes made during peer review process, conclusions remain the same
Schrödinger symmetry of Schwarzschild-(A)dS black hole mechanics
Creators: name: Achour, Jibril Ben
name: Livine, Etera R.
name: Oriti, Daniele
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We show that the dynamics of Schwarzschild-(A)dS black holes admits a symmetry under the 2d Schrödinger group, whatever the sign or value of the cosmological constant. This is achieved by reformulating the spherically-symmetric reduction of general relativity as a 2d mechanical system with a non-trivial potential controlled by the cosmological constant, and explicitly identifying the conserved charges for black hole mechanics. We expect the Schrödinger symmetry to drive the dynamics of quantum Schwarzschild-(A)dS black holes. This suggests that Schrödinger-preserving non-linear deformations (of the Gross-Piteavskii type) should capture universal quantum gravity corrections to the black hole geometry. Such scenario could be realized in condensed matter analogue models.
description: 10 pages, extended discussion and added references, version accepted by Phys.Rev.D
Local setting of spin textures in a granular antiferromagnet
Creators: name: Leiviskä, Miina
name: Jenkins, Sarah
name: Evans, Richard F. L.
name: Gusakova, Daria
name: Baltz, Vincent
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Controlling the magnetic order of antiferromagnets is challenging due to their vanishing net magnetization. For this reason, the study of local spin textures in antiferromagnets is restricted by the difficulty in nucleating such states. Here, using atomistic simulations we demonstrate a method for nucleating localized spin textures in the grains of thin film antiferromagnet, $γ$-IrMn$_3$. Utilising the exchange bias coupling between a ferromagnet and an antiferromagnet, we set the spin texture in the latter from a predefined spin texture in the former by means of a thermal cycling procedure. The local textures set in the antiferromagnetic grains are shown to be stable against field perturbations. We also discuss how various material parameters affect the efficiency of the setting and the characteristics of these set textures. The setting of antiferromagnetic spin textures provides a potential route to antiferromagnetic spintronic devices with non-collinear spin states such as skyrmions, bubbles and domain walls.
A study of transmission of Welsh traditional dance, music, and song in North America: recapturing Welsh Tradition through Kodály studies
Creators: name: Drayson, Susan K.
Publisher: name: University of Calgary
Year: 2003
Subjects: subject: AC1 .T484 2003 D73

description: Bibliography: p. 165-171
description: Accompanied by 2 CDs
description: Pages 165-166 missing
Imaging spectroscopy of rubidium atoms attached to helium nanodroplets
Creators: name: Fechner, L.
name: Gruener, B.
name: Sieg, A.
name: Callegari, C.
name: Ancilotto, F.
name: Stienkemeier, F.
name: Mudrich, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: Highly excited states of rubidium (Rb) atoms attached to helium (He) nanodroplets are studied by two-photon ionization spectroscopy in combination with electron and ion imaging. Photoion spectra and angular distributions are in good agreement with a pseudodiatomic model for the RbHe_N complex. Repulsive interactions in the excited states entail fast dissociation followed by ionization of free Rb atoms as well as of RbHe and RbHe_2 exciplexes. Nonresonant excitation generates Rb atoms in low-lying electronic levels by statistical evaporation-like desorption.
Sequence biostratigraphy and depositional modeling of the Pennsylvanian to Permian belloy formation northwest Alberta and northeast British Columbia
Creators: name: Dunn, Lindsay A.
Publisher: name: University of Calgary
Year: 2003
Subjects: subject: AC1 .T484 2000Z D86

description: Bibliography: p. 221-238.
description: 16 oversized illustrations are included at the beginning of the thesis.
Magnetic anomalies in single crystalline Tb5Si3
Creators: name: Iyer, Kartik K.
name: Mukherjee, K.
name: Paulose, P. L.
name: Sampathkumaran, E. V.
name: Xu, Y.
name: Löser, W.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The polycrystalline form of the compound, Tb5Si3, crystallizing in Mn5Si3-type hexagonal structure, which was earlier believe to order antiferromagnetically below 69 K, has been recently reported by us to exhibit interesting magnetoresistance (MR) anomalies. In order to understand the magnetic anomalies of this compound better, we synthesized single crystals of this compound and subjected them to intense magnetization and MR studies. The results reveal that the magnetic behavior is strongly anisotropic as the easy axis is along a basal plane. There appear to be multiple magnetic features in the close vicinity of 70 K. In addition, there are multiple steps in isothermal magnetization (which could not be resolved in the data for polycrystalline data) for magnetic-field (H) along a basal plane. The sign of MR is positive in the magnetically ordered state, and, interestingly, the magnitude dramatically increases at the initial step for H parallel to basal plane, but decreases at subsequent steps as though the origin of these steps are different. However, for the perpendicular orientation (H || [0 0 0 1]), there is no evidence for any step either in M(H) or in MR(H). These results establish this compound is an interesting magnetic material.
Discriminating mixed qubit states with collective measurements
Creators: name: Conlon, Lorcan O.
name: Eilenberger, Falk
name: Lam, Ping Koy
name: Assad, Syed M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is a central fact in quantum mechanics that non-orthogonal states cannot be distinguished perfectly. This property ensures the security of quantum key distribution. It is therefore an important task in quantum communication to design and implement strategies to optimally distinguish quantum states. In general, when we have access to multiple copies of quantum states the optimal measurement will be a collective measurement. However, to date, collective measurements have not been used to enhance quantum state discrimination. One of the main reasons for this is the fact that, in the usual state discrimination setting with equal prior probabilities, at least three copies of a quantum state are required to be measured collectively to outperform separable measurements. This is very challenging experimentally. In this work, by considering unequal prior probabilities, we propose and experimentally demonstrate a protocol for distinguishing two copies of single qubit states using collective measurements which achieves a lower probability of error than can be achieved by any non-entangling measurement. We implement our measurements on an IBM Q System One device, a superconducting quantum processor. Additionally, we implemented collective measurements on three and four copies of the unknown state and found they performed poorly.
description: Close to published version, published in Nature Communications Physics
Additional file 1 of Prevalence, awareness, and control of hypertension among Bangladeshi adults: an analysis of demographic and health survey 2017–18
Creators: name: Al Kibria, Gulam Muhammed
name: Gupta, Rajat Das
name: Nayeem, Jannatun
Publisher: name: figshare
Year: 2021
Subjects: subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1: Supplemental Table 1. Prevalence (95% confidence interval) of people with hypertension, awareness, and control among ≥30-year-old people.
20. Burgenseminar
Creators: name: Brinken, Bernd
Publisher: name: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Year: 2020

description: -
description: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege, Bd. 30 Nr. 2 (1989): Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Evaluation of inverse integral transforms for undergraduate physics students
Creators: name: Farrell, Aaron
name: van Zyl, Brandon P.
name: MacDonald, Zachary
Publisher: name: arXiv
Year: 2011
Subjects: subject: Physics Education (physics.ed-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We provide a simple approach for the evaluation of inverse integral transforms that does not require any knowledge of complex analysis. The central idea behind the method is to reduce the inverse transform to the solution of an ordinary differential equation. We illustrate the utility of the approach by providing examples of the evaluation of transforms, without the use of tables. We also demonstrate how the method may be used to obtain a general representation of a function in the form of a series involving the Dirac-delta distribution and its derivatives, which has applications in quantum mechanics, semi-classical, and nuclear physics.
description: 21 Pages, No Figures
Transdermal Patches: Advancing Drug Delivery and Safety in Pharmaceutical Container Closure Systems in Canada, the USA, and the EU
Creators: name: Gogda, Jasmin
name: Momin, Sarosh Javed
name: Sheth, Dhari Tusharkumar
name: Ramani, Gelesh Jaysukhbhai
name: Patel, Anjali Nileshkumar
name: Pirouzi, Peivand
Publisher: name: Crown College of Canada
Year: 2025

description: This article examines transdermal patches across Canada, the USA, and the EU, focusing on their design, materials, safety and quality impacts, regulatory frameworks, risk management strategies, and future innovations.
Ingrid Krupp, Burgen und Schlösser in Hessen-Nassau. Ein Handbuch
Creators: name: Hofrichter, Hartmut
Publisher: name: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Year: 2020

description: Rezension zu: Ingrid Krupp, Burgen und Schlösser in Hessen-Nassau. Ein Handbuch, Würzburg: Verlag Weidlich 1987, 326 S., 133 Abb., davon 8 in Farbe. ISBN 3-8035-1289-1.
description: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege, Bd. 31 Nr. 1 (1990): Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Towards Understanding the Survival of Patients with High-Grade Gastroenteropancreatic Neuroendocrine Neoplasms: An Investigation of Ensemble Feature Selection in the Prediction of Overall Survival
Creators: name: Jenul, Anna
name: Stokmo, Henning Langen
name: Schrunner, Stefan
name: Revheim, Mona-Elisabeth
name: Hjortland, Geir Olav
name: Tomic, Oliver
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Determining the most informative features for predicting the overall survival of patients diagnosed with high-grade gastroenteropancreatic neuroendocrine neoplasms is crucial to improve individual treatment plans for patients, as well as the biological understanding of the disease. Recently developed ensemble feature selectors like the Repeated Elastic Net Technique for Feature Selection (RENT) and the User-Guided Bayesian Framework for Feature Selection (UBayFS) allow the user to identify such features in datasets with low sample sizes. While RENT is purely data-driven, UBayFS is capable of integrating expert knowledge a priori in the feature selection process. In this work we compare both feature selectors on a dataset comprising of 63 patients and 134 features from multiple sources, including basic patient characteristics, baseline blood values, tumor histology, imaging, and treatment information. Our experiments involve data-driven and expert-driven setups, as well as combinations of both. We use findings from clinical literature as a source of expert knowledge. Our results demonstrate that both feature selectors allow accurate predictions, and that expert knowledge has a stabilizing effect on the feature set, while the impact on predictive performance is limited. The features WHO Performance Status, Albumin, Platelets, Ki-67, Tumor Morphology, Total MTV, Total TLG, and SUVmax are the most stable and predictive features in our study.
Additional file 2 of Prevalence, awareness, and control of hypertension among Bangladeshi adults: an analysis of demographic and health survey 2017–18
Creators: name: Al Kibria, Gulam Muhammed
name: Gupta, Rajat Das
name: Nayeem, Jannatun
Publisher: name: figshare
Year: 2021
Subjects: subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 2: Supplemental Table 2. Results of logistic regression analysis to investigate unadjusted odds ratio (with 95% confidence interval) for the factors associated with prevalence of hypertension, awareness among hypertensive people, and controlled hypertension among people taking antihypertensive drugs.
Magnons in the fan phase of anisotropic frustrated antiferromagnets
Creators: name: Utesov, Oleg I.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Elementary excitations spectrum of the fan phase of anisotropic frustrated antiferromagnets is discussed analytically. In the linear spin-wave approximation, the spectrum is determined by the Hamiltonian, including normal, anomalous, and umklapp terms. The latter mix states with momenta which differ by two modulation vectors of the fan structure. This mixing leads to essential rearrangement of the low-energy part of the spectrum, which is shown to consist of a gapless phason branch with linear dispersion and a gapped ``optical'' branch, which corresponds to the fan structure amplitude oscillations. In the high-energy part of the spectrum, the effect of the umklapps is negligible, and the excitations are similar to the magnons of the fully polarized phase.
description: 9 pages, 3 figures
Η τηλεργασία στην εποχή της “κοινωνικής απόστασης”: ο ρόλος της επαγγελματικής κατάρτισης – Μελέτη Περίπτωσης Teleperformance Greece
Creators: name: Καρύκας, Παναγιώτης
Publisher: name: Πανεπιστήμιο Πελοποννήσου
Year: 2022
Subjects: subject: Τηλεργασία -- Ψυχολογικές απόψεις -- Ελλάδα
subject: Τηλεργασία -- Κοινωνικές απόψεις -- Ελλάδα
subject: Εργασία στο σπίτι -- Ψυχολογικές απόψεις -- Ελλάδα
subject: Βιομηχανικές σχέσεις -- Ελλάδα
subject: COVID-19 (Ασθένεια) -- Ελλάδα
subject: Κοινωνική απόσταση
subject: Κοινωνική απομόνωση
subject: Τηλεργασία
subject: Πανδημία
subject: COVID-19
subject: Επαγγελματική κατάτριση
subject: Κοινωνική απόσταση
subject: Κοινωνική αποστασιοποίηση

description: Αριθμός Εισαγωγής: 013442 cd
description: Το ξέσπασμα της πανδημίας του COVID-19 οδήγησε τις επιχειρήσεις να μεταβάλουν εν μια νυκτί τον τρόπο λειτουργίας τους και να εφαρμόσουν εκτεταμένα την τηλεργασία. Σκοπός της παρούσας μελέτης ήταν η διερεύνηση της τηλεργασίας στην εποχή της κοινωνικής απόστασης λόγω της πανδημικής κρίσης και του ρόλου της επαγγελματικής κατάρτισης, στην περίπτωση μια πολυεθνικής επιχείρησης τηλεπικοινωνιών που δραστηριοποιείται στην Ελλάδα. Βάσει των ευρημάτων, η μετάβαση της μελετώμενης εταιρίας στην τηλεργασία ήταν ομαλή, δεδομένου ότι η συγκεκριμένη πρακτική χρησιμοποιούνταν και πριν την πανδημία, ωστόσο, σε μικρότερη κλίμακα. Από πλευράς εργαζομένων, η τηλεργασία έγινε αποδεκτή ως μια θετική εξέλιξη, εφόσον συνδέθηκε με αυξημένο προσωπικό χρόνο και μεγαλύτερη ευελιξία. Ωστόσο, η πλειοψηφία των συμμετεχόντων εξέφρασε ανησυχίες για την διείσδυση του εργασιακού χώρου στην προσωπική ζωή, καθώς και για τη μετακύλιση του κόστους λειτουργίας της επιχείρησης στον ίδιο τον εργαζόμενο. Επίσης, μια σημαντική επίδραση της τηλεργασίας που καταδείχθηκε είναι η έλλειψη κοινωνικής αλληλεπίδρασης με τους συναδέλφους.
Molecular gas in young debris disks
Creators: name: Moór, A.
name: Ábrahám, P.
name: Juhász, A.
name: Kiss, Cs.
name: Pascucci, I.
name: Kóspál, Á.
name: Apai, D.
name: Henning, Th.
name: Csengeri, T.
name: Grady, C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Gas-rich primordial disks and tenuous gas-poor debris disks are usually considered as two distinct evolutionary phases of the circumstellar matter. Interestingly, the debris disk around the young main-sequence star 49 Ceti possesses a substantial amount of molecular gas, and possibly represents the missing link between the two phases. Motivated to understand the evolution of the gas component in circumstellar disks via finding more 49 Ceti-like systems, we carried out a CO J=3-2 survey with Atacama Pathfinder EXperiment, targeting 20 infrared-luminous debris disks. These systems fill the gap between primordial and old tenuous debris disks in terms of fractional luminosity. Here we report on the discovery of a second 49 Ceti-like disk around the 30 Myr old A3-type star HD21997, a member of the Columba Association. This system was also detected in the CO(2-1) transition, and the reliable age determination makes it an even clearer example of an old gas-bearing disk than 49 Ceti. While the fractional luminosities of HD21997 and 49 Ceti are not particularly high, these objects seem to harbor the most extended disks within our sample. The double-peaked profiles of HD21997 were reproduced by a Keplerian disk model combined with the LIME radiative transfer code. Based on their similarities, 49 Ceti and HD21997 may be the first representatives of a so far undefined new class of relatively old (>~8 Myr), gaseous dust disks. From our results, neither primordial origin nor steady secondary production from icy planetesimals can unequivocally explain the presence of CO gas in the disk of HD21997.
description: Accepted for publication in ApJ Letters, 8 pages, 3 figures, 1 tables (emulateapj style)
A Consolidated Online Database of Galactic Planetary Nebulae
Creators: name: Miszalski, B.
name: Acker, A.
name: Ochsenbein, F.
name: Parker, Q. A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Since the unifying Strasbourg-ESO Catalogue of Galactic Planetary Nebulae (SECGPN) a large number of new discoveries have been made thanks to improved surveys and discovery techniques. The increasingly heterogeneous published population of Galactic PNe, that we have determined totals < 2850 PNe, is becoming more difficult to study on the whole without a centralised repository. We introduce a consolidated and interactive online database with object classifications that reflect the latest multi-wavelength data and the most recent results. The extensible database, hosted by the Centre de Donnees astronomique de Strasbourg (CDS), will contain a wealth of observed data for large, well-defined samples of PNe including coordinates, multi-wavelength images, spectroscopy, line intensities, radial velocities and central star information. It is anticipated that the database will be publicly released early 2012.
description: To appear in IAU Symposium 283: Planetary Nebulae, an Eye to the Future. 2 pages, 1 figure
Impurity Effects on Superconductivity on Surfaces of Topological Insulators
Creators: name: Ito, Yuto
name: Yamaji, Youhei
name: Imada, Masatoshi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A two-dimensional superconductor (SC) on surfaces of topological insulators (TIs) is a mixture of s-wave and helical p-wave components when induced by s-wave interactions, since spin and momentum are correlated. On the basis of the Abrikosov-Gor'kov theory, we reveal that unconventional SCs on the surfaces of TIs are stable against time-reversal symmetric (TRS) impurities within a region of small impurity concentration. Moreover, we analyze the stability of the SC on the surfaces of TIs against impurities beyond the perturbation theory by solving the real-space Bogoliubov-de Gennes equation for an effective tight-binding model of a TI. We find that the SC is stable against strong TRS impurities. The behaviors of bound states around an impurity suggest that the SC on the surfaces of TIs is not a topological SC.
description: 17 pages, 14 figures, to appear in J. Phys. Soc. Jpn
Direct Estimation of Parameters in ODE Models Using WENDy: Weak-form Estimation of Nonlinear Dynamics
Creators: name: Bortz, David M.
name: Messenger, Daniel A.
name: Dukic, Vanja
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Dynamical Systems (math.DS)
subject: Quantitative Methods (q-bio.QM)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: FOS: Biological sciences
subject: 35D30, 62FXX, 62JXX, 65L09, 65M32, 92-08

description: We introduce the Weak-form Estimation of Nonlinear Dynamics (WENDy) method for estimating model parameters for non-linear systems of ODEs. Without relying on any numerical differential equation solvers, WENDy computes accurate estimates and is robust to large (biologically relevant) levels of measurement noise. For low dimensional systems with modest amounts of data, WENDy is competitive with conventional forward solver-based nonlinear least squares methods in terms of speed and accuracy. For both higher dimensional systems and stiff systems, WENDy is typically both faster (often by orders of magnitude) and more accurate than forward solver-based approaches. The core mathematical idea involves an efficient conversion of the strong form representation of a model to its weak form, and then solving a regression problem to perform parameter inference. The core statistical idea rests on the Errors-In-Variables framework, which necessitates the use of the iteratively reweighted least squares algorithm. Further improvements are obtained by using orthonormal test functions, created from a set of C-infinity bump functions of varying support sizes. We demonstrate the high robustness and computational efficiency by applying WENDy to estimate parameters in some common models from population biology, neuroscience, and biochemistry, including logistic growth, Lotka-Volterra, FitzHugh-Nagumo, Hindmarsh-Rose, and a Protein Transduction Benchmark model. Software and code for reproducing the examples is available at (https://github.com/MathBioCU/WENDy).
description: 28 pages, 16 figures
The Rise-Time Distribution of Nearby Type Ia Supernovae
Creators: name: Ganeshalingam, Mohan
name: Li, Weidong
name: Filippenko, Alexei V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present an analysis of the B-band and V-band rise-time distributions of nearby Type Ia supernovae (SNe Ia). We use a two-stretch template-fitting method to measure the rise and decline of BV light curves. Our analysis of 61 SNe with high-quality light curves indicates that the longer the time between explosion and maximum light (i.e., the rise time), the slower the decline of the light curve after maximum. However, SNe with slower post-maximum decline rates have a faster rise than would be expected from a single-parameter family of light curves, indicating that SN Ia light curves are not a single-parameter family of varying widths. Comparison of the B-band rise-time distribution for spectroscopically normal SNe Ia to those exhibiting high-velocity spectral features indicates that high-velocity (HV) SNe Ia have shorter B-band rise times compared to their spectroscopically normal counterparts. After normalising the B-band light curves to Dm15(B)= 1.1 mag (i.e., correcting the post-maximum decline to have the same shape as our template), we find that spectroscopically normal SNe Ia have a rise time of 18.03 +/- 0.24 d, while HV SNe have a faster B-band rise time of 16.63 +/- 0.29 d. Despite differences in the B band, we find that HV and normal SNe Ia have similar rise times in the V band. The initial rise of a SN Ia B-band light curve follows a power law with index 2.20 +0.27 -0.19, consistent with a parabolic rise in flux predicted by an expanding fireball toy model. We compare our early-time B-band data to models for the predicted signature of companion interaction arising from the single-degenerate progenitor scenario. There is a substantial degree of degeneracy between the adopted power-law index of the SN light-curve template, the rise time, and the amount of shock emission required to match the data.
description: 17 pages, 9 figures, MNRAS accepted
Penteparatanais BIRD & BAMBER, 2013, gen. nov.
Creators: name: BIRD, GRAHAM J.
name: BAMBER, ROGER N.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Tanaidacea
Paratanaidae
Penteparatanais

description: Penteparatanais gen. nov.
 Diagnosis. Female: with carapace entire. Pleonites 1–4 epimera with articulated pappose seta. Pleotelson not plate-like. Antennule five-articled, without distinct cap-like segment; article-2 PSS short. Antenna article-2 with inferodistal apophysis; article-3 with superior spine; articles 2–4 without longitudinal ridge. Mandible body smooth. Maxilliped endite tubercles small, rounded; palp article-2 without modified medial seta. Cheliped palm without sinuate spine near articulation with dactylus, medial comb with many spines (ca. eight). Pereopods 2–3 basis naked; carpus inferior pair of spines longer than broad, equal. Pereopods 4–6 ischium with two setae; carpus without elevated rows of spinules on inferior margin. Uropod rami at least as long as peduncle. Male unknown.
 Type species. Penteparatanais laevicarpus sp.nov., by monotypy.
 Etymology. From Greek pente, alluding to the five-articled antennule.
 Gender. Male.
 Distribution. New Zealand; bathyal, 907– 908 m.
 Remarks. The “extra” antennule article in this genus appears to be formed from the division of the “normal” fourth article in Paratanais. It may represent an atavistic character, but in Leptochelia the same feature is associated with preparatory males (Bamber 2010); here the specimens are unquestionably female. A converse pattern is seen in the recently described Triparatanais Bamber & Chatterjee, 2010, where the three-articled condition is achieved through fusion of the two proximal articles (here as articles 1 and 2). The smooth inferior margin of the pereopods 4–6 carpus also marks this taxon as outside the normal Paratanais condition (and similar to Atemtanais) where a double row of spinules constitute a form of clinging apparatus, although there are scattered spinules or combs. Unless stated otherwise, the implicit characters given for NZ Paratanais are applicable to the following new species.
description: Published as part of BIRD, GRAHAM J. & BAMBER, ROGER N., 2013, New littoral, shelf, and bathyal Paratanaidae (Crustacea: Peracarida: Tanaidacea) from New Zealand, with descriptions of three new genera, pp. 1-71 in Zootaxa 3676 (1) on page 55, DOI: 10.11646/zootaxa.3676.1.1, http://zenodo.org/record/5597797
A Large Population of Massive Compact Post-Starburst Galaxies at z>1: Implications for the Size Evolution and Quenching Mechanism of Quiescent Galaxies
Creators: name: Whitaker, Katherine E.
name: Kriek, Mariska
name: van Dokkum, Pieter G.
name: Bezanson, Rachel
name: Brammer, Gabriel
name: Franx, Marijn
name: Labbe, Ivo
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the growth of the red sequence through the number density and structural evolution of a sample of young and old quiescent galaxies at 01 that are almost non-existent at z<1; their number density is 5 x 10^{-5} Mpc^{-3} at z=2, whereas it is a factor of 10 less at z=0.5. The observed number densities of young and old quiescent galaxies at z>1 are consistent with a simple model in which all old quiescent galaxies were once identified as post-starburst galaxies. We find that the overall population of quiescent galaxies have smaller sizes and slightly more elongated shapes at higher redshift, in agreement with other recent studies. Interestingly, the most recently quenched galaxies at 1
description: Accepted for publication in ApJ, 8 pages, 7 figures, 1 table
Umbral Dots Observed in Photometric Images taken with 1.6 m Solar Telescope
Creators: name: Andic, Aleksandra
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Umbral dots (UDs) were observed using the 1.6 meter solar telescope. Achieved conventional diffraction limit in the TiO 705.68 nm spectral line used was 0.1". The 418 UDs were analysed. Median diameter was 0.5'' and median intensity difference between darkest part of the UD's background and brightest part of the UDs was 37%. Despite to achieved resolution, no UDs substructures were visible. The analysed UDs appeared to be circular.
description: 11 pages 5 figures, Accepted for publication in SerAJ
The effects of X-ray absorption variability in NGC 4395
Creators: name: Nardini, Emanuele
name: Risaliti, Guido
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a new X-ray analysis of the dwarf Seyfert galaxy NGC 4395, based on two archival XMM-Newton and Suzaku observations. This source is well known for a series of remarkable properties: one of the smallest estimated black hole masses among Active Galactic Nuclei (of the order of ~10^5 M_sun), intense flux variability on very short time-scales (a few tens of seconds), an unusually flat X-ray continuum (Gamma ~ 1.4 over the 2-10 keV energy range). NGC 4395 is also characterized by significant variations of the X-ray spectral shape, and here we show that such behaviour can be explained through the partial occultation by circumnuclear cold absorbers with column densities of ~10^22-10^23 cm^-2. In this scenario, the primary X-ray emission is best reproduced by means of a power law with a standard Gamma ~ 1.8 photon index, consistent with both the spectral slope observed at higher energies and the values typical of local AGN.
description: 7 pages, 8 figures, 2 tables. Accepted for publication in MNRAS
On the Use of Power Amplifier Nonlinearity Quotient to Improve Radio Frequency Fingerprint Identification in Time-Varying Channels
Creators: name: Yang, Lu
name: Camtepe, Seyit
name: Gao, Yansong
name: Liu, Vicky
name: Jayalath, Dhammika
Publisher: name: arXiv
Year: 2023
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Radio frequency fingerprint identification (RFFI) is a lightweight device authentication technique particularly desirable for power-constrained devices, e.g., the Internet of things (IoT) devices. Similar to biometric fingerprinting, RFFI exploits the intrinsic and unique hardware impairments resulting from manufacturing, such as power amplifier (PA) nonlinearity, to develop methods for device detection and classification. Due to the nature of wireless transmission, received signals are volatile when communication environments change. The resulting radio frequency fingerprints (RFFs) are distorted, leading to low device detection and classification accuracy. We propose a PA nonlinearity quotient and transfer learning classifier to design the environment-robust RFFI method. Firstly, we formalized and demonstrated that the PA nonlinearity quotient is independent of environmental changes. Secondly, we implemented transfer learning on a base classifier generated by data collected in an anechoic chamber, further improving device authentication and reducing disk and memory storage requirements. Extensive experiments, including indoor and outdoor settings, were carried out using LoRa devices. It is corroborated that the proposed PA nonlinearity quotient and transfer learning classifier significantly improved device detection and device classification accuracy. For example, the classification accuracy was improved by 33.3% and 34.5% under indoor and outdoor settings, respectively, compared to conventional deep learning and spectrogram-based classifiers.
description: 7 pages, 7 figures, first preprint
Atomic physics and quantum optics using superconducting circuits
Creators: name: You, J. Q.
name: Nori, Franco
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Superconducting circuits based on Josephson junctions exhibit macroscopic quantum coherence and can behave like artificial atoms. Recent technological advances have made it possible to implement atomic-physics and quantum-optics experiments on a chip using these artificial atoms. This review presents a brief overview of the progress achieved so far in this rapidly advancing field. We not only discuss phenomena analogous to those in atomic physics and quantum optics with natural atoms, but also highlight those not occurring in natural atoms. In addition, we summarize several prospective directions in this emerging interdisciplinary field.
description: 13 pages, 6 figures, 3 boxes with additional 2 figures. See also: http://www.nature.com/nature/journal/v474/n7353/full/nature10122.html
Diffusive model of current-in-plane-tunneling in double magnetic tunnel junctions
Creators: name: Clément, Pierre-Yves
name: Ducruet, Clarisse
name: Baraduc, Claire
name: Chshiev, Mair
name: Diény, Bernard
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We propose a model that describes current-in-plane tunneling transport in double barrier magnetic tunnel junctions in diffusive regime. Our study shows that specific features appear in double junctions that are described by introducing two typical length scales. The model may be used to measure the magnetoresistance and the resistance area product of both barriers in unpatterned stacks of double barrier magnetic tunnel junctions.
description: 4 pages, 3 figures
Calibrated Bayes, for Statistics in General, and Missing Data in Particular
Creators: name: Little, Roderick
Publisher: name: arXiv
Year: 2011
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: It is argued that the Calibrated Bayesian (CB) approach to statistical inference capitalizes on the strength of Bayesian and frequentist approaches to statistical inference. In the CB approach, inferences under a particular model are Bayesian, but frequentist methods are useful for model development and model checking. In this article the CB approach is outlined. Bayesian methods for missing data are then reviewed from a CB perspective. The basic theory of the Bayesian approach, and the closely related technique of multiple imputation, is described. Then applications of the Bayesian approach to normal models are described, both for monotone and nonmonotone missing data patterns. Sequential Regression Multivariate Imputation and Penalized Spline of Propensity Models are presented as two useful approaches for relaxing distributional assumptions.
description: Published in at http://dx.doi.org/10.1214/10-STS318 the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Avian influenza Overview. Literature search on phenotypic and genetic characterisation of AI viruses: Protocol and results
Creators: name: European Food Safety Authority
name: European Centre For Disease Prevention And Control
name: European Union Reference Laboratory For Avian Influenza
Publisher: name: Zenodo
Year: 2020
Subjects: subject: protocol
subject: animal health
subject: extensive literature search
subject: avian influenza
subject: HPAI
subject: captive birds
subject: wild birds
subject: mammals
subject: http://id.agrisemantics.org/gacs/

description: Protocol and results of the literature searches in PubMed platform performed in the context of the Avian Influenza Quarterly Reports updating on the avian influenza situation within the Union and worldwide published by EFSA, ECDC and EURL. Literature searches are designed to provide information on phenotypic and genotypic characterisation of HPAI viruses circulating on other continents and regions (Africa, Asia, the Middle East) in domestic or wild birds or mammals (excluding humans).
description: EU; pdf; irene.munozguajardo@efsa.europa.eu
Interpretable and intervenable ultrasonography-based machine learning models for pediatric appendicitis
Creators: name: Marcinkevičs, Ričards
name: Wolfertstetter, Patricia Reis
name: Klimiene, Ugne
name: Chin-Cheong, Kieran
name: Paschke, Alyssia
name: Zerres, Julia
name: Denzinger, Markus
name: Niederberger, David
name: Wellmann, Sven
name: Ozkan, Ece
name: Knorr, Christian
name: Vogt, Julia E.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Appendicitis is among the most frequent reasons for pediatric abdominal surgeries. Previous decision support systems for appendicitis have focused on clinical, laboratory, scoring, and computed tomography data and have ignored abdominal ultrasound, despite its noninvasive nature and widespread availability. In this work, we present interpretable machine learning models for predicting the diagnosis, management and severity of suspected appendicitis using ultrasound images. Our approach utilizes concept bottleneck models (CBM) that facilitate interpretation and interaction with high-level concepts understandable to clinicians. Furthermore, we extend CBMs to prediction problems with multiple views and incomplete concept sets. Our models were trained on a dataset comprising 579 pediatric patients with 1709 ultrasound images accompanied by clinical and laboratory data. Results show that our proposed method enables clinicians to utilize a human-understandable and intervenable predictive model without compromising performance or requiring time-consuming image annotation when deployed. For predicting the diagnosis, the extended multiview CBM attained an AUROC of 0.80 and an AUPR of 0.92, performing comparably to similar black-box neural networks trained and tested on the same dataset.
description: Published in Medical Image Analysis (Elsevier)
Additional file 1 of Systematic identification of non-canonical transcription factor motifs
Creators: name: Chumpitaz-Diaz, Luis
name: Samee, Md. Abul Hassan
name: Pollard, Katherine S.
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Supplementary Table 1. All non-canonical motifs, logo visualization, and the associated statistics.
Supracenter: determining locations of fireball terminal bursts using seismic arrival times of acoustic waves
Creators: name: Edwards, Wayne Neil
Publisher: name: University of Calgary
Year: 2003
Subjects: subject: AC1 .T484 2003 E39A
subject: Additional copy: AC1 .T484 2003 E39 (Gallagher)

description: Bibliography: p. 108-113
description: Includes one CD-Rom
On the double crossed product of weak Hopf algebras
Creators: name: Böhm, Gabriella
name: Gómez-Torrecillas, José
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Algebra (math.QA)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: Given a weak distributive law between algebras underlying two weak bialgebras, we present sufficient conditions under which the corresponding weak wreath product algebra becomes a weak bialgebra with respect to the tensor product coalgebra structure. When the weak bialgebras are weak Hopf algebras, then the same conditions are shown to imply that the weak wreath product becomes a weak Hopf algebra, too. Our sufficient conditions are capable to describe most known examples, (in particular the Drinfel'd double of a weak Hopf algebra).
description: 18 pages, several diagrams
Feature Perturbation Augmentation for Reliable Evaluation of Importance Estimators in Neural Networks
Creators: name: Brocki, Lennart
name: Chung, Neo Christopher
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Post-hoc explanation methods attempt to make the inner workings of deep neural networks more interpretable. However, since a ground truth is in general lacking, local post-hoc interpretability methods, which assign importance scores to input features, are challenging to evaluate. One of the most popular evaluation frameworks is to perturb features deemed important by an interpretability method and to measure the change in prediction accuracy. Intuitively, a large decrease in prediction accuracy would indicate that the explanation has correctly quantified the importance of features with respect to the prediction outcome (e.g., logits). However, the change in the prediction outcome may stem from perturbation artifacts, since perturbed samples in the test dataset are out of distribution (OOD) compared to the training dataset and can therefore potentially disturb the model in an unexpected manner. To overcome this challenge, we propose feature perturbation augmentation (FPA) which creates and adds perturbed images during the model training. Through extensive computational experiments, we demonstrate that FPA makes deep neural networks (DNNs) more robust against perturbations. Furthermore, training DNNs with FPA demonstrate that the sign of importance scores may explain the model more meaningfully than has previously been assumed. Overall, FPA is an intuitive data augmentation technique that improves the evaluation of post-hoc interpretability methods.
Phononic-magnetic dichotomy of the thermal Hall effect in the Kitaev-Heisenberg candidate material Na$_2$Co$_2$TeO$_6$
Creators: name: Gillig, Matthias
name: Hong, Xiaochen
name: Wellm, Christoph
name: Kataev, Vladislav
name: Yao, Weiliang
name: Li, Yuan
name: Büchner, Bernd
name: Hess, Christian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Majorana fermions as emergent excitations of the Kitaev quantum spin liquid ground state constitute a promising concept in fault tolerant quantum computation. Experimentally, the recently reported topological half-quantized thermal Hall effect in the Kitaev material $α$-RuCl$_3$ seems to confirm the Majorana nature of the material's magnetic excitations. It has been argued, however, that the thermal Hall signal in $α$-RuCl$_3$ rather stems from phonons or topological magnons than from Majorana fermions. Here we investigate the thermal Hall effect of the closely related Kitaev quantum material Na$_2$Co$_2$TeO$_6$, and we show that the thermal Hall signal emerges from at least two components, phonons and magnetic excitations. This dichotomy results from our discovery that the transversal heat conductivity $κ_{xy}$ carries clear signatures of the phononic $κ_{xx}$, but changes sign upon entering the low-temperature, magnetically ordered phase. We systematically resolve the two components by considering the detailed temperature and field dependence of both $κ_{xy}$ and $κ_{xx}$. Our results demonstrate that uncovering a genuinely quantized magnetic thermal Hall effect in a Kitaev topological quantum spin liquid requires to disentangle phonon vs. magnetic contributions where the latter include potentially fractionalized excitations such as the expected Majorana fermions.