cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Learning effective dynamics from data-driven stochastic systems
Creators: name: Feng, Lingyu
name: Gao, Ting
name: Dai, Min
name: Duan, Jinqiao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Multiscale stochastic dynamical systems have been widely adopted to a variety of scientific and engineering problems due to their capability of depicting complex phenomena in many real world applications. This work is devoted to investigating the effective dynamics for slow-fast stochastic dynamical systems. Given observation data on a short-term period satisfying some unknown slow-fast stochastic systems, we propose a novel algorithm including a neural network called Auto-SDE to learn invariant slow manifold. Our approach captures the evolutionary nature of a series of time-dependent autoencoder neural networks with the loss constructed from a discretized stochastic differential equation. Our algorithm is also validated to be accurate, stable and effective through numerical experiments under various evaluation metrics.
Low-Power Wireless Wearable ECG Monitoring Chestbelt Based on Ferroelectric Microprocessor
Creators: name: Ai, Zhendong
name: Wang, Zihan
name: Cui, Wei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Since cadiovascular disease (CVD) posts a heavy threat to people's health, long-term electrocardiogram (ECG) monitoring is of great value for the improvement of treatment. To realize remote long-term ECG monitoring, a low-power wireless wearable ECG monitoring device is proposed in this paper. The ECG monitoring device, abbreviated as ECGM, is designed based on ferroelectric microprocessor which provides ultra-low power consumption and contains four parts-MCU, BLE, Sensors and Power. The MCU part means circuit of MSP430FR2433, the core of ECGM. The BLE part is the CC2640R2F module applied for wireless transmission of the collected bio-signal data. And the sensors part includes several sensors like BMD101 used for monitoring bio-signals and motion of the wearer, while the Power part consists of battery circuit, charging circuit and 3.3V/1.8V/4.4V power supply circuit. The ECGM first collects ECG signals from the fabric electrodes adhered to wearers' chest, preprocesses the signals to eliminate the injected noise, and then transmit the output data to wearers' hand-held mobile phones through Bluetooth low energy (BLE). The wearers are enabled to acquire ECGs and other physiological parameters on their phones as well as some corresponding suggestions. The novelty of the system lies in the combination of low-power ECG sensor chip with ferroelectric microprocessor, thus achieving ultra-low power consumption and high signal quality.
Bande-dessinée pédagogique sur la bibliométrie et l'évaluation de la recherche
Creators: name: Latour, Marie
name: Mahé, Annaïg
Publisher: name: Zenodo
Year: 2020
Subjects: Bande-dessinée
Bibliométrie
Evaluation de la recherche
Ludification
Comics
Bibliometry
Reseach Evaluation
Gamification

description: Depuis 2015, le Service commun de la Documentation (SCD) de l'Université de Guyane a entamé un travail de refonte de ses formations - notamment en Master et en Doctorat - dans le sens d'une ludification des contenus et d'une pratique générale de l'active learning. Lors de l'Open Access Week 2018, le SCD avait fait venir Mme Annaïg Mahé, enseignante-chercheuse en sciences de l'information et de la communication à l'URFIST de Paris / Ecole nationale des Chartes pour présenter aux doctorants et aux enseignants-chercheurs de l'Université un cours sur la bibliométrie et l'évaluation dans la recherche. De ce cours, Marie Latour, en collaboration avec Mme Mahé, a tiré une bande-dessinée pédagogique, qui a pu être réalisée grâce au soutien financier du GIS URFIST. La création des dessins et du graphisme ont été élaborés sur la base d'un synopsis créé par le SCD par Jordy Le Bruchec et Bénédicte Sauvage. Cette bande dessinée est placée sous licence Creative Commons BY NC SA. Vous pouvez librement la réutiliser et la modifier sous réserve de citer l'Université de Guyane, de ne pas la commercialiser, et de déposer vos modifications éventuelles sous une licence libre. Pour toutes questions ou remarques, merci de vous adresser à Marie Latour à l'adresse suivante : marie.latour@univ-guyane.fr
The effects of viral infection on plant cell phenolics in wheat and tobacco
Creators: name: Gibney, Blair
Publisher: name: University of British Columbia
Year: 2009

description: The study compared the effects on free and cell wall bound phenolics of Triticum aestivum cv. Katepwa inoculated with Tobacco Necrosis Virus (TNV), Barley Stripe Mosaic Virus (BSMV) or distilled water. In addition, the phenolic compounds in Nicotiana tabacum cv. Xanthi n.c. inoculated with TNV, Tobacco Mosaic Virus or distilled water were examined. Analysis of the free phenolics consisted of methanol extracts of freeze-dried plant leaves. Samples of the methanol extracts were subjected to hydrolysis by NaOH and B-glucosidase. Cell wall bound phenolics were determined from hydrolysis of the cell walls with 2 M NaOH. Identification and separation of the various phenolic compounds was attained by use of HPLC. In unhydrolysed wheat methanol extracts, no phenolics were identified. In the tobacco samples, protocatechuic acid was found in mock samples. In J3-glucosidase hydrolysed wheat samples ferulic acid was found in both virally challenged treatments but not in mock inoculated plants. In the tobacco, TMV infected samples contained vanillic, caffeic, salicylic, ferulic and possibly truxinic or truxillic acids. In TNV inoculated samples 4-hydroxybenzoic acid was found. Mock samples contained no identifiable peaks. Alkali hydrolysis methanol extracts contained vanillic, caffeic, benzoic, salicylic and truxinic/truxillic acids. In the TNV infected plants benzoic acid was identified. No compounds were identified in mock inoculated samples. Wheat cell walls released vanillic, p-coumaric, ferulic, and diferulic acids as well as vanillin and p-hydroxybenzaldehyde. Levels released decreased late in the infection process The mock infected tobacco cell walls released p-coumaric acid. The TNV inoculated samples released p-hydroxybehzaldehyde and vanillin as well as p-coumaric acid. The TMV exposed plants produced caffeic acid in addition to the compounds produced by TNV.
Time-variability of alpha from realistic models of Oklo reactors
Creators: name: Gould, C. R.
name: Sharapov, E. I.
name: Lamoreaux, S. K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We reanalyze Oklo $^{149}$Sm data using realistic models of the natural nuclear reactors. Disagreements among recent Oklo determinations of the time evolution of $α$, the electromagnetic fine structure constant, are shown to be due to different reactor models, which led to different neutron spectra used in the calculations. We use known Oklo reactor epithermal spectral indices as criteria for selecting realistic reactor models. Two Oklo reactors, RZ2 and RZ10, were modeled with MCNP. The resulting neutron spectra were used to calculate the change in the $^{149}$Sm effective neutron capture cross section as a function of a possible shift in the energy of the 97.3-meV resonance. We independently deduce ancient $^{149}$Sm effective cross sections, and use these values to set limits on the time-variation of $α$. Our study resolves a contradictory situation with previous Oklo $α$-results. Our suggested $2 σ$ bound on a possible time variation of $α$ over two billion years is stringent: $ -0.24 \times 10^{-7} \le \frac{Δα}α \le 0.11 \times 10^{-7}$, but model dependent in that it assumes only $α$ has varied over time.
description: 14 pages, 4 figures. Corrections: minus sign missing in equation 32, changed sign of change in alpha in equations 33 and 34. Also added two new references and corrected minor typographical errors
Έννοιες ισοδυναμίας πολυμεταβλητών πολυωνυμικών πινάκων και εφαρμογές στη Θεωρία Ελέγχου:
Creators: name: Πατσαλίδου, Κυριακή Πελοπίδα
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Αναλλοίωτα πολυώνυμα
Στοιχειώδεις διαιρέτες
Smith διαιρέτες
Invariant polynomial
Smith form
Determinantal divisors

description: Η παρούσα εργασί πραγματεύεται τις έννοιες ισοδυναμίας πολυμετάβλητων πολυωνυμικών πινάκων. Ειδικότερα το κεφάλαιο 1 έχει ένα προπαρασκευαστικό χαρακτήρα γιατι δίνουμε τις έννοιες των δακτυλίων και των ιδεωδώ που στις επομόμενες ενότητες θα μας φανούν χρήσιμες. Στο κεφάλαιο 2 γίνεται μια περιγραφή των πινάκων και των ιδιοτήτων τους. Δίνονται οι ορισμοι της Smith κανονικης μορφής του μέγιστου κοινου διαιρετη, των στοιχειωδών μετασχηματισμών. Στο κεφάλαιο 3 ανφερόμαστε στους πολυωνυμικούς πίνακες 2 μεταβλητών και στις έννοιες του αντιστρέψιμου πίνακα, των μηδενικά πρώτων και πραγοντικά πρώτων πινάκων και στις σχέσεις ισοδυναμίας.Κλείνουμε με το κεφάλαιο 4 όπου γινεται μια αναφορα στις ισοδυναμίες συστημάτων και συγκεκριμένα στην ισοδυναμία Rosenbrock , στην ισοδυναμια στο χώρο των καταστάσεων, στην αντιστρέψιμη ισοδυναμία και στην ισοδυναμία συστημάτων Fuhrmann.
description: The present paper concerns about 2-D polynomial matrices and their equivalence relations.The paper is divide in four sections. More precisely, the first section deals with the structure of rings and ideals.The second section is about polynomial matrices, greatest common divisor, Smith canonical form, the elementary transformation of those as well as the geometric interpretation of invariants that these transformations keep in a relation to the solutions of the linear differential equations of the matrices. There is an extensive analysis of the unimodular equivalence which is about polynomial matrices of the same dimension and of the extended unimodular equivalence that is about polynomial matrices of different dimensions.The third section is abput polynomial matrices, zeros and factor coprimeness and zero, factor and elemantary equivalences.The fourth section is about system equivalence and specifically state-space systems equivalence, Rosenbrock’s strict system equivalence, unimodular equivalence systems and Fuhrmann’s system equivalence.
Optimization of the lowest eigenvalue of a soft quantum ring
Creators: name: Exner, Pavel
name: Lotoreichik, Vladimir
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Analysis of PDEs (math.AP)
subject: Spectral Theory (math.SP)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 81Q37, 35J10, 35P15

description: We consider the self-adjoint two-dimensional Schrödinger operator $H_μ$ associated with the differential expression $-Δ-μ$ describing a particle exposed to an attractive interaction given by a measure $μ$ supported in a closed curvilinear strip and having fixed transversal one-dimensional profile measure $μ_\bot$. This operator has nonempty negative discrete spectrum and we obtain two optimization results for its lowest eigenvalue. For the first one, we fix $μ_\bot$ and maximize the lowest eigenvalue with respect to shape of the curvilinear strip the optimizer in the first problem turns out to be the annulus. We also generalize this result to the situation which involves an additional perturbation of $H_μ$ in the form of a positive multiple of the characteristic function of the domain surrounded by the curvilinear strip. Secondly, we fix the shape of the curvilinear strip and minimize the lowest eigenvalue with respect to variation of $μ_\bot$, under the constraint that the total profile measure $α>0$ is fixed. The optimizer in this problem is $μ_\bot$ given by the product of $α$ and the Dirac $δ$-function supported at an optimal position.
description: 19 pages, no figures
БИТИМЛАРНИНГ ҲАҚИҚИЙ ЭМАСЛИК АСОСЛАРИ
Creators: name: Sharipov Shuxratbek Abbasovich, huquq magistri, advokat
Publisher: name: Zenodo
Year: 2024

description: Фуқаролик ҳуқуқ ва бурчларининг вужудга келишида юридик фактлар алоҳида ўрин тутади. Ҳуқуқ ва бурчлар шахсларнинг эрки-иродаси асосида вужудга келиши эса бевосита ҳаракатларга асосланади ва бундай ҳаракатлар ўзига хос фуқаролик-ҳуқуқий категория битимлар – категориясини вужудга келтиради. Бунда шахсларнинг муайян ҳаракатлари битим ҳисобланиши учун тегишли ҳуқуқий оқибатни вужудга келтириши, яъни фуқаролик ҳуқуқ ва бурчларни юзага келтириши лозим. Фуқаролик қонунчилигида фуқаролик ҳуқуқ ва бурчларининг вужудга келтирувчи дастлабки асос сифатида ҳам битимлар белгиланган.
Μέτρα συσχέτισης και μέτρα συμφωνίας στη βιοστατιστική:
Creators: name: Ευαγγέλου, Αλεξάνδρα Γρηγορίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Σύγκριση μεθόδων μέτρησης
Συντελεστής Συμφωνίας
Συντελεστής Συσχέτισης
Bland - Altman
Correlation coefficient
Concordance coefficient

description: Σκοπός αυτής της εργασίας είναι η μελέτη της μεθόδου Bland- Altman για τη σύγκριση μεθόδων μέτρησης στην ιατρική επιστήμη. Στο πρώτο κεφάλαιο παρουσιάζονται οι συντελεστές συσχέτισης και η απλή γραμμική παλινδρόμηση καθώς και ο τρόπος που χρησιμοποιούνται για τη σύγκριση τρόπων μέτρησης. Στο επόμενο κεφάλαιο γίνεται μελέτη της μεθόδου Bland- Altman και ακολουθεί εφαρμογή σε δεδομένα με τη χρήση του πακέτου S-Plus. Στο τελευταίο κεφάλαιο, γίνεται μια σύντομη αναφορά στον συντελεστή συμφωνίας, που μπορεί να χρησιμοποιηθεί στις περιπτώσεις που η Bland- Altman μέθοδος δεν δίνει επαρκή αποτελέσματα.
description: Issue of this project is the study of Bland- Altman method for the comparison of method of measurements in medical science. In the first chapter we make a demonstration of the correlation coefficients as well as the simple linear regression. In the next chapter there is an analytical study of the Bland – Altman method with an application in real data with the use of the statistical package S-Plus. In the last chapter, the concordance coefficient is being analyzed, which is used in cases that Bland – Altman method is not sufficient
$SQED_4$ and $QED_4$ on the null-plane
Creators: name: Casana, R.
name: Pimentel, B. M.
name: Zambrano, G. E. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We studied the scalar electrodynamics ($SQED_{4}$) and the spinor electrodynamics ($QED_{4}$) in the null-plane formalism. We followed the Dirac's technique for constrained systems to perform a detailed analysis of the constraint structure in both theories. We imposed the appropriated boundary conditions on the fields to fix the hidden subset first class constraints which generate improper gauge transformations and obtain an unique inverse of the second class constraint matrix. Finally, choosing the null-plane gauge condition, we determined the generalized Dirac brackets of the independent dynamical variables which via the correspondence principle give the (anti)-commutators for posterior quantization.
description: 16 pages, LaTeX 2e,
Accelerating Coupled Cluster Calculations with Nonlinear Dynamics and Shallow Machine Learning
Creators: name: Agarawal, Valay
name: Roy, Samrendra
name: Chakraborty, Anish
name: Maitra, Rahul
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The dynamics associated with the time series of the iteration scheme of coupled cluster theory has been analysed. The phase space analysis indicates the presence of a few significant cluster amplitudes, mostly involving valence excitations, which dictate the dynamics, while all other amplitudes are enslaved. Starting with a few initial iterations to establish the inter-relationship among the cluster amplitudes, a supervised Machine Learning scheme with polynomial Kernel Ridge Regression model has been employed to express each of the enslaved variables uniquely in terms of the master amplitudes. The subsequent coupled cluster iterations are restricted to a reduced dimension only to determine those significant excitations, and the enslaved variables are determined through the already established functional mapping. We will show that our scheme leads to tremendous reduction in computational time without sacrificing the accuracy.
description: 8 pages, 8 figures (including 1 Tikz Cartoon)
Nonlinear Three-Tank System Fault Detection and Isolation Using Differential Flatness
Creators: name: Rammal, Rim
name: Airimitoaie, Tudor-Bogdan
name: Melchior, Pierre
name: Cazaurang, Franck
Publisher: name: arXiv
Year: 2022
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: Fault detection and isolation on hydraulic systems are very important to ensure safety and avoid disasters. In this paper, a fault detection and isolation method, based on the flatness property of nonlinear systems, is experimentally applied on the three-tank system, which is considered as a popular prototype of hydraulic systems. Specifically, fault indicators, called residues, are generated using flat output measurements, and for the purpose of fault isolation, a definition of the isolability is introduced. This definition allows the characterization of flat outputs that are useful for fault isolation. A sensitivity analysis is proposed in order to improve the robustness of the method. Multiplicative faults are considered on sensors and actuators.
Quantum path interferences in high-order harmonic generation from aligned diatomic molecules
Creators: name: Chatziathanasiou, S.
name: Liontos, I.
name: Skantzakis, E.
name: Kahaly, S.
name: Kahaly, M. Upadhyay
name: Tsatrafyllis, N.
name: Faucher, O.
name: Witzel, B.
name: Papadakis, N.
name: Charalambidis, D.
name: Tzallas, P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Electron quantum path interferences in strongly laser-driven aligned molecules and their dependence on the molecular alignment is an essential open problem in strong-field molecular physics. Here, we demonstrate an approach which provides direct access to the observation of these interference processes. The approach is based on the combination of the time-gated-ion-microscopy technique with a pump-probe arrangement used to align the molecules and generate high-order harmonics. By spatially resolving the interference pattern produced by the spatiotemporal overlap of the harmonics emitted by the short and long electron quantum paths, we have succeeded in measuring in situ their phase difference and disclose their dependence on molecular alignment. The findings constitute a vital step towards an understanding of strong-field molecular physics and the development of attosecond spectroscopy approaches without the use of auxiliary atomic references.
description: 7 pages, 3 figures
X-ray Spectral Evolution of High Energy Peaked Blazars
Creators: name: Gaur, Haritma
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The synchrotron hump of the high energy peaked blazars generally lies in the 0.1-10 keV range and such sources show extreme flux and spectral variability in X-ray bands. Various spectral studies showed that the X-ray spectra of high energy peaked blazars are curved and better described by the log-parabolic model. The curvature is attributed to the energy dependent statistical acceleration mechanism. In this work, we review the X-ray spectral studies of high energy peaked blazars. It is found that the log-parabolic model well describes the spectra in a wide energy interval around the peak. The log-parabolic model provides the possibility of investigating the correlation between the spectral parameters derived from it. Therefore, we compiled the studies of correlations between the various parameters derived from the log-parabolic model and their implications to describe the variability mechanism of blazars.
description: 7 Pages, 0 Figures. Published in the special issue "X-Ray Flux and Spectral Variability of Blazars" of Galaxies journal
Observation of concentrating paraxial beams
Creators: name: Aiello, Andrea
name: Paur, Martin
name: Stoklasa, Bohumil
name: Hradil, Zdenek
name: Rehacek, Jaroslav
name: Sanchez-Soto, Luis L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report,to the best of our knowledge, the first observation of concentrating paraxial beams of light in a linear nondispersive medium. We have generated this intriguing class of light beams, recently predicted by one of us, in both one- and two-dimensional configurations. As we demonstrate in our experiments, these concentrating beams display unconventional features, such as the ability to strongly focus in the focal spot of a thin lens like a plane wave, while keeping their total energy finite.
description: 8 pages, 7 figures
Effect of oxygen isotope substitution and crystal micro-structure on magnetic ordering and phase separation in {$\rm (La_{1-y}Pr_{y})_{0.7}Ca_{0.3}MnO_3$}
Creators: name: Pomjakushin, V. Yu.
name: Sheptyakov, D. V.
name: Conder, K.
name: Pomjakushina, E. V.
name: Balagurov, A. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The crystal and magnetic structures of the specified CMR manganite system have been studied as a function of $y=(0.2-1)$ across the metal-insulator (MI) transition, and of the oxygen mass ($^{16}$O, $^{18}$O). We quantitatively show how the polaronic narrowing of the carrier bandwidth and the crystal lattice micro-strains control the volume fractions of the mesoscopic ferro- and antiferromagnetic clusters. A well-defined dip in the transition temperatures and the suppression of all the types of long range ordering seen near the MI-transition at $y\simeq0.9$ indicate a key role of the quenched disorder for the formation of the long-scale phase separated state.
description: 21 pages (REVTeX preprint), 1 Table, 13 Figures, accepted in PRB
Polariton Topological Transition Effects on Radiative Heat Transfer
Creators: name: Zhou, ChengLong
name: Wu, XiaoHu
name: Zhang, Yong
name: Yi, HongLiang
name: Antezza, Mauro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Twisted two-dimensional bilayer materials exhibit many exotic physical phenomena. Manipulating the twist angle between the two layers enables fine control of the physical structure, resulting in development of many novel physics, such as the magic-angle flat-band superconductivity, the formation of moire exciton and interlayer magnetism. Here, combined with analogous principles, we study theoretically the near-field radiative heat transfer (NFRHT) between two twisted hyperbolic systems. This two twisted hyperbolic systems are mirror images of each other. Each twisted hyperbolic system is composed of two graphene gratings, where there is an angle ϕ between this two graphene gratings. By analyzing the photonic transmission coefficient as well as the plasmon dispersion relation of twisted hyperbolic system, we prove that the topological transitions of the surface state at a special angle (from open (hyperbolic) to closed (elliptical) contours) can modulate efficiently the radiative heat transfer. Meanwhile the role of the thickness of dielectric spacer and vacuum gap on the manipulating the topological transitions of the surface state and the NFRHT are also discussed. We predict the hysteresis effect of topological transitions at a larger vacuum gap, and demonstrate that as thickness of dielectric spacer increase, the transition from the enhancement effect of heat transfer caused by the twisted hyperbolic system to a suppression. This technology could novel mechanism and control method for NFRHT, and may open a promising pathway for highly efficient thermal management, energy harvesting, and subwavelength thermal imaging.
Diminishing Uncertainty within the Training Pool: Active Learning for Medical Image Segmentation
Creators: name: Nath, Vishwesh
name: Yang, Dong
name: Landman, Bennett A.
name: Xu, Daguang
name: Roth, Holger R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Active learning is a unique abstraction of machine learning techniques where the model/algorithm could guide users for annotation of a set of data points that would be beneficial to the model, unlike passive machine learning. The primary advantage being that active learning frameworks select data points that can accelerate the learning process of a model and can reduce the amount of data needed to achieve full accuracy as compared to a model trained on a randomly acquired data set. Multiple frameworks for active learning combined with deep learning have been proposed, and the majority of them are dedicated to classification tasks. Herein, we explore active learning for the task of segmentation of medical imaging data sets. We investigate our proposed framework using two datasets: 1.) MRI scans of the hippocampus, 2.) CT scans of pancreas and tumors. This work presents a query-by-committee approach for active learning where a joint optimizer is used for the committee. At the same time, we propose three new strategies for active learning: 1.) increasing frequency of uncertain data to bias the training data set; 2.) Using mutual information among the input images as a regularizer for acquisition to ensure diversity in the training dataset; 3.) adaptation of Dice log-likelihood for Stein variational gradient descent (SVGD). The results indicate an improvement in terms of data reduction by achieving full accuracy while only using 22.69 % and 48.85 % of the available data for each dataset, respectively.
description: 19 pages, 13 figures, Transactions of Medical Imaging
Representability of orthogonal matroids over partial fields
Creators: name: Baker, Matthew
name: Jin, Tong
Publisher: name: arXiv
Year: 2022
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Let $r \leqslant n$ be nonnegative integers, and let $N = \binom{n}{r} - 1$. For a matroid $M$ of rank $r$ on the finite set $E = [n]$ and a partial field $k$ in the sense of Semple--Whittle, it is known that the following are equivalent: (a) $M$ is representable over $k$; (b) there is a point $p = (p_J) \in {\bf P}^N(k)$ with support $M$ (meaning that $\text{Supp}(p) := \{J \in \binom{E}{r} \; \vert \; p_J \ne 0\}$ of $p$ is the set of bases of $M$) satisfying the Grassmann-Plücker equations; and (c) there is a point $p = (p_J) \in {\bf P}^N(k)$ with support $M$ satisfying just the 3-term Grassmann-Plücker equations. Moreover, by a theorem of P. Nelson, almost all matroids (meaning asymptotically 100%) are not representable over any partial field. We prove analogues of these facts for Lagrangian orthogonal matroids in the sense of Gelfand-Serganova, which are equivalent to even Delta-matroids in the sense of Bouchet.
description: 13 pages
Moving and colliding pulses in the subcritical Ginzburg-Landau model with a standing-wave drive
Creators: name: Baizakov, B. B.
name: Filatrella, G.
name: Malomed, B. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We show the existence of steadily moving solitary pulses (SPs) in the complex Ginzburg-Landau (CGL) equation, which includes the cubic-quintic (CQ) nonlinearity and a conservative linear driving term, whose amplitude is a standing wave with wavenumber $k$ and frequency $ω$, the motion of the SPs being possible at velocities $\pm ω/k$, which provide locking to the drive. A realization of the model may be provided by traveling-wave convection in a narrow channel with a standing wave excited in its bottom (or on the surface). An analytical approximation is developed, based on an effective equation of motion for the SP coordinate. Direct simulations demonstrate that the effective equation accurately predicts characteristics of the driven motion of pulses, such as a threshold value of the drive's amplitude. Collisions between two solitons traveling in opposite directions are studied by means of direct simulations, which reveal that they restore their original shapes and velocity after the collision.
description: 7 pages, 5 eps figures
7 dB quadrature squeezing at 860 nm with periodically-poled KTiOPO4
Creators: name: Suzuki, Shigenari
name: Yonezawa, Hidehiro
name: Kannari, Fumihiko
name: Sasaki, Masahide
name: Furusawa, Akira
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We observed -7.2 dB quadrature squeezing at 860 nm by using a sub-threshold continuous-wave pumped optical parametric oscillator with a periodically-poled KTiOPO4 crystal as a nonlinear optical medium. The squeezing level was measured with the phase of homodyne detection locked at the quadrature. The blue light induced infrared absorption was not observed in the experiment.
description: 3 pages, 3 figures
Diffractive Higgs production
Creators: name: Forshaw, Jeffrey R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Instrumenting the LHC to measure the outgoing protons in the process pp -> p+X+p opens up new possibilities for physics studies in the Standard Model and beyond. In this talk I first present an overview of the underlying QCD calculation and its uncertainties. I then move on to present a variety of new physics scenarios which one would want to explore via this unique channel. There is a short discussion of the recent CDF data which may provide evidence for the existence of central exclusive jet production at the Tevatron.
description: 8 pages. Talk presented at "Diffraction 2006"
Eta Carinae & the Homunculus: Far Infrared, Sub-millimeter Spectral Lines
Creators: name: Gull, T. R.
name: Morris, P. W.
name: Black, J. H.
name: Nielsen, K. E.
name: Barlow, M. J.
name: Royer, P.
name: Swinyard, B. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The evolved massive binary star Eta Carinae underwent eruptive mass loss events that formed the complex bi-polar Homunculus nebula harboring tens of solar masses of unusually nitrogen-rich gas and dust. Despite expectations for the presence of a significant molecular component to the gas, detections have been observationally challenged by limited access to the far-infrared and the intense thermal continuum. A spectral survey of the atomic and rotational molecular transitions was carried out with the Herschel Space Observatory, revealing a rich spectrum of broad emission lines originating in the ejecta. Velocity profiles of selected PACS lines correlate well with known substructures: H I in the central core; NH and weak [C II] within the Homunculus; and [N II] emissions in fast-moving structures external to the Homunculus. We have identified transitions from [O I], H I, and 18 separate light C- and O-bearing molecules including CO, CH, CH+, and OH, and a wide set of N-bearing molecules, NH, NH+, N2H+, NH2, NH3, HCN, HNC, CN, and N2H+. Half of these are new detections unprecedented for any early-type massive star environment. A very low ratio [12C/13C] LE 4 is estimated from five molecules and their isotopologues. We demonstrate that non-LTE effects due to the strong continuum are significant. Abundance patterns are consistent with line formation in regions of carbon and oxygen depletions with nitrogen enhancements, reflecting an evolved state of the erupting star with efficient transport of CNO-processed material to the outer layers. The results offer many opportunities for further observational and theoretical investigations of the molecular chemistry under extreme physical and chemical conditions around massive stars in their final stages of evolution.
description: 37 pages, 16 figures, 5 tables, accepted MNRAS
Ellipsoidal Universe Can Solve The CMB Quadrupole Problem
Creators: name: Campanelli, L.
name: Cea, P.
name: Tedesco, L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The recent three-year WMAP data have confirmed the anomaly concerning the low quadrupole amplitude compared to the best-fit ΛCDM prediction. We show that, allowing the large-scale spatial geometry of our universe to be plane-symmetric with eccentricity at decoupling or order 10^{-2}, the quadrupole amplitude can be drastically reduced without affecting higher multipoles of the angular power spectrum of the temperature anisotropy.
description: 4 pages, 2 figures, minor changes, reference added, to appear in Phys. Rev. Lett
Διατενότητα και έκφραση προσωπικής στάσης του ομιλητή: δύο λειτουργίες και υποτακτικής έκγλισης στη Νέα Ελληνική
Creators: name: Γκιμιτζούδης, Αθανάσιος Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Υποτακτική έγκλιση
Εκφραση προσωπικής στάσης
Διατενότητα
Subjunctive mood
Expression of personal stance
Intensionality

description: Η παρούσα εργασία έχει ως θέμα της την υποτακτική στα ΝΕ, και συγκεκριμένα τις λειτουργίες που αυτή επιτελεί. Η βασική θέση που υιοθετείται είναι πως η υποτακτική, ως έγκλιση στη ΝΕ, δίνει στον ομιλητή τη δυνατότητα να αποδώσει την προσωπική του στάση απέναντι σε αυτό που λέγεται αφ’ ενός, και την έννοια της διατενότητας/ παραπομπής σε πιθανούς κόσμους αφ’ ετέρου, μια άποψη που έχει υποστηριχθεί και στη σχετική με την υποτακτική βιβλιογραφία. Η συμβολή της συγκεκριμένης εργασίας στην εξέταση της υποτακτικής ως κατηγορίας, έγκειται στο ότι στα πλαίσια της εξετάζεται η λειτουργία των να-συμπληρωμάτων όταν αυτά συνοδεύουν κάποια συγκεκριμένα γλωσσικά στοιχεία της ΝΕ(συγκεκριμένα τα ώσπου, μέχρι, πριν, καλύτερα, χωρίς), καθώς και στην περίπτωση που αυτά συνοδεύουν ρήματα επιστημικής τροπικότητας, όπως τα πρέπει και μπορεί. Με βάση τα συγκεκριμένα δεδομένα που εξετάζονται, η ύπαρξη των συγκεκριμένων δυνατοτήτων που υποστηρίζουμε πως έχει η υποτακτική δίνει στον ομιλητή μοιάζει να επαληθεύεται. Η παρουσία τους στις συγκεκριμένες περιπτώσεις που εξετάστηκαν θεωρείται ότι είναι ενδεικτική του ότι υποτακτική, σαν κατηγορία, επιστρατεύεται όταν στόχος του ομιλητή είναι η έκφραση της προσωπικής του στάσης και η απόδοση της έννοιας της διατενότητας.
description: The present study deals with the subject of the subjunctive mood in MD, and more specifically with the functions indicated by its use. The essential view that is being embraced is that the subjunctive mood in MG gives the speaker the prospect to convey his personal stance towards what is being said, on the one hand, and the notion of intensionality/ relegation to possible worlds, on the other, a view that has been maintained in the bibliography which is related to the subjunctive mood. The contribution of the present study in the examination of the subjunctive as a category lies in the fact that, inside its framework, there is being held an examination of na- complements in the cases where they accompany certain linguistic elements of MG (ώσπου, μέχρι, πριν, καλύτερα, χωρίς), as well as when they can be found along epistemic modality verbs, like πρέπει and μπορεί. On the basis of the data being examined here, it seems that the existence of the prospects that we claim that the subjunctive mood gives to the speaker is confirmed. The presence of these prospects in the cases examined in this project is seen as indicative of the fact that the subjunctive, as a category, is being called forth when a speaker’s aim is to express his personal stance, and intensionality.
No evidence for spontaneous orbital currents in finite size studies of three-band models for CuO planes
Creators: name: Greiter, Martin
name: Thomale, Ronny
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have numerically evaluated the current-current correlations for three-band models of the CuO planes in high-T_c superconductors at hole doping x=1/8. The results show no evidence for the orbital current patterns proposed by Varma. If such patterns exist, the associated energy is estimated to be smaller than 5 meV per link even if epsilon_p-epsilon_d=0. Assuming that the three-band models are adequate, quantum critical fluctuations of such patterns hence cannot be responsible for phenomena occurring at significantly higher energies, such as superconductivity or the anomalous properties of the pseudogap phase.
Spectroscopy of spin-split Andreev levels in a quantum dot with superconducting leads
Creators: name: Bargerbos, Arno
name: Pita-Vidal, Marta
name: Žitko, Rok
name: Splitthoff, Lukas J.
name: Grünhaupt, Lukas
name: Wesdorp, Jaap J.
name: Liu, Yu
name: Kouwenhoven, Leo P.
name: Aguado, Ramón
name: Andersen, Christian Kraglund
name: Kou, Angela
name: van Heck, Bernard
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We use a hybrid superconductor-semiconductor transmon device to perform spectroscopy of a quantum dot Josephson junction tuned to be in a spin-1/2 ground state with an unpaired quasiparticle. Due to spin-orbit coupling, we resolve two flux-sensitive branches in the transmon spectrum, depending on the spin of the quasi-particle. A finite magnetic field shifts the two branches in energy, favoring one spin state and resulting in the anomalous Josephson effect. We demonstrate the excitation of the direct spin-flip transition using all-electrical control. Manipulation and control of the spin-flip transition enable the future implementation of charging energy protected Andreev spin qubits.
description: Updated references. Main: 8 pages, 4 figures. Supplement: 19 pages, 13 figures
THE COVERAGE WIDTH OF THE COMPREHENSIVE FLAT-CUTTER WORKING BODY FOR INTENSIVE GARDEN INTER-ROW PROCESSING ITS EFFECT ON PERFORMANCE
Creators: name: Khalilov Jakhongir Mansur ugli Basic doktoral student of the Bukhara institute of natural resources management of the National research university of TIIAME
Publisher: name: Zenodo
Year: 2024

description: In this article, the results of the study of the effect of the coverage width of the working body of a comprehensive flat-cutter, which completely cuts the weeds in the intensive garden rows, and quality treatment of the soil between the garden rows, on its performance are presented. In this, it was determined that the coverage width of the comprehensive flat cutting tool should be 75 cm. The tests were conducted in an intensive drip-irrigated orchard planted in a 4x1.2 scheme.

Keywords. Intensive garden, cultivator, extensive flat-cutter body, spherical disc, soil pusher leveler, weed.
Shotgun identification on groups
Creators: name: Raymond, Jacob
name: Bland, Robert
name: McGoff, Kevin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We consider the problem of shotgun identification of patterns on groups, which extends previous work on shotgun identification of DNA sequences and labeled graphs. A shotgun identification problem on a group $G$ is specified by two finite subsets $C \subset G$ and $K \subset G$ and a finite alphabet $\mathcal{A}$. In such problems, there is a ``global" pattern $w \in \mathcal{A}^{CK}$, and one would like to be able to identify this pattern (up to translation) based only on observation of the ``local" $K$-shaped subpatterns of $w$, called reads, centered at the elements of $C$. We consider an asymptotic regime in which the size of $w$ tends to infinity and the symbols of $w$ are drawn in an i.i.d. fashion. Our first general result establishes sufficient conditions under which the random pattern $w$ is identifiable from its reads with probability tending to one, and our second general result establishes sufficient conditions under which the random pattern $w$ is non-identifiable with probability tending to one. Additionally, we illustrate our main results by applying them to several families of examples.
BSpell: A CNN-Blended BERT Based Bangla Spell Checker
Creators: name: Rahman, Chowdhury Rafeed
name: Rahman, MD. Hasibur
name: Zakir, Samiha
name: Rafsan, Mohammad
name: Ali, Mohammed Eunus
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Bangla typing is mostly performed using English keyboard and can be highly erroneous due to the presence of compound and similarly pronounced letters. Spelling correction of a misspelled word requires understanding of word typing pattern as well as the context of the word usage. A specialized BERT model named BSpell has been proposed in this paper targeted towards word for word correction in sentence level. BSpell contains an end-to-end trainable CNN sub-model named SemanticNet along with specialized auxiliary loss. This allows BSpell to specialize in highly inflected Bangla vocabulary in the presence of spelling errors. Furthermore, a hybrid pretraining scheme has been proposed for BSpell that combines word level and character level masking. Comparison on two Bangla and one Hindi spelling correction dataset shows the superiority of our proposed approach. BSpell is available as a Bangla spell checking tool via GitHub: https://github.com/Hasiburshanto/Bangla-Spell-Checker
Isotope analysis in central heavy ion collisions at intermediate energies
Creators: name: EX Collaboration
name: Geraci, E.
name: Abbondanno, U.
name: Bardelli, L.
name: Barlini, S.
name: Bini, M.
name: Bruno, M.
name: Cannata, F.
name: Casini, G.
name: Chiari, M.
name: D'Agostino, M.
name: DeSanctis, J.
name: Giussani, A.
name: Gramegna, F.
name: Kravchuk, V. L.
name: Lanchais, A. L.
name: Marini, P.
name: Moroni, A.
name: Nannini, A.
name: Olmi, A.
name: Ordine, A.
name: Pasquali, G.
name: Piantelli, S.
name: Poggi, G.
name: Vannini, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Symmetry energy is a key quantity in the study of the equation of state of asymmetric nuclear matter. Heavy ion collisions at low and intermediate energies, performed at Laboratori Nazionali di Legnaro and Laboratori Nazionali del Sud, can be used to extract information on the symmetry energy coefficient Csym, which is currently poorly known but relevant both for astrophysics and for structure of exotic nuclei.
description: 2 pages, 1 figure. Proceedings of 7th International Conference on Radioactive Nuclear Beams (RNB7), to be published in The European Physical Journal A
Interactive Visual Study of Multiple Attributes Learning Model of X-Ray Scattering Images
Creators: name: Huang, Xinyi
name: Jamonnak, Suphanut
name: Zhao, Ye
name: Wang, Boyu
name: Hoai, Minh
name: Yager, Kevin
name: Xu, Wei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Graphics (cs.GR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Existing interactive visualization tools for deep learning are mostly applied to the training, debugging, and refinement of neural network models working on natural images. However, visual analytics tools are lacking for the specific application of x-ray image classification with multiple structural attributes. In this paper, we present an interactive system for domain scientists to visually study the multiple attributes learning models applied to x-ray scattering images. It allows domain scientists to interactively explore this important type of scientific images in embedded spaces that are defined on the model prediction output, the actual labels, and the discovered feature space of neural networks. Users are allowed to flexibly select instance images, their clusters, and compare them regarding the specified visual representation of attributes. The exploration is guided by the manifestation of model performance related to mutual relationships among attributes, which often affect the learning accuracy and effectiveness. The system thus supports domain scientists to improve the training dataset and model, find questionable attributes labels, and identify outlier images or spurious data clusters. Case studies and scientists feedback demonstrate its functionalities and usefulness.
description: IEEE SciVis Conference 2020
On the maximum value of the cosmic abundance of oxygen and the oxygen yield
Creators: name: Pilyugin, L. S.
name: Thuan, T. X.
name: Vilchez, J. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We search for the maximum oxygen abundance in spiral galaxies. Because this maximum value is expected to occur in the centers of the most luminous galaxies, we have constructed the luminosity - central metallicity diagram for spiral galaxies, based on a large compilation of existing data on oxygen abundances of HII regions in spiral galaxies. We found that this diagram shows a plateau at high luminosities (-22.3 < M_B < -20.3), with a constant maximum value of the gas-phase oxygen abundance 12+log(O/H) ~ 8.87. This provides strong evidence that the oxygen abundance in the centers of the most luminous metal-rich galaxies reaches the maximum attainable value of oxygen abundance. Since some fraction of the oxygen (about 0.08 dex) is expected to be locked into dust grains, the maximum value of the true gas+dust oxygen abundance in spiral galaxies is 12+log(O/H) ~ 8.95. This value is a factor of ~ 2 higher than the recently estimated solar value. Based on the derived maximum oxygen abundance in galaxies, we found the oxygen yield to be about 0.0035, depending on the fraction of oxygen incorporated into dust grains.
description: 8 pages, 5 figures, accepted for publication in MNRAS