cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Performance Evaluation of Deep Convolutional Maxout Neural Network in Speech Recognition
Creators: name: Dehghani, Arash
name: Seyyedsalehi, Seyyed Ali
Publisher: name: arXiv
Year: 2021
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: In this paper, various structures and methods of Deep Artificial Neural Networks (DNN) will be evaluated and compared for the purpose of continuous Persian speech recognition. One of the first models of neural networks used in speech recognition applications were fully connected Neural Networks (FCNNs) and, consequently, Deep Neural Networks (DNNs). Although these models have better performance compared to GMM / HMM models, they do not have the proper structure to model local speech information. Convolutional Neural Network (CNN) is a good option for modeling the local structure of biological signals, including speech signals. Another issue that Deep Artificial Neural Networks face, is the convergence of networks on training data. The main inhibitor of convergence is the presence of local minima in the process of training. Deep Neural Network Pre-training methods, despite a large amount of computing, are powerful tools for crossing the local minima. But the use of appropriate neuronal models in the network structure seems to be a better solution to this problem. The Rectified Linear Unit neuronal model and the Maxout model are the most suitable neuronal models presented to this date. Several experiments were carried out to evaluate the performance of the methods and structures mentioned. After verifying the proper functioning of these methods, a combination of all models was implemented on FARSDAT speech database for continuous speech recognition. The results obtained from the experiments show that the combined model (CMDNN) improves the performance of ANNs in speech recognition versus the pre-trained fully connected NNs with sigmoid neurons by about 3%.
description: 6 pages, 2 figures, conference paper submitted to 2018 25th National and 3rd International Iranian Conference on Biomedical Engineering (ICBME)
Börries Kuzmany, Brody. Eine galizische Grenzstadt im langen 19. Jahrhundert
Creators: name: Hein-Kircher, Heidi
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2014

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 63 Nr. 4 (2014)
Antony Polonsky, The Jews in Poland and Russia Bd. 2
Creators: name: Hein-Kircher, Heidi
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 2 (2013): Nationalisierung und Pragmatismus. Staatliche Institutionen und Minderheiten in Polen 1918-1939
Personaleinsatz und -mobilität in der litauischen Provinz der Gesellschaft Jesu im 18. Jahrhundert
Creators: name: Mariani, Andrea
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2014

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 63 Nr. 2 (2014)
Approximating Orbits in a Rotating Gravity Field with Oblateness and Ellipticity Perturbations
Creators: name: Burnett, Ethan
name: Schaub, Hanspeter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Classical Physics (physics.class-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: This paper explores the problem of analytically approximating the orbital state for a subset of orbits in a rotating potential with oblateness and ellipticity perturbations. This is done by isolating approximate differential equations for the orbit radius and other elements. The conservation of the Jacobi integral is used to make the problem solvable to first-order in the perturbations. The solutions are characterized as small deviations from an unperturbed circular orbit. The approximations are developed for near-circular orbits with initial mean motion $n_{0}$ around a body with rotation rate $c$. The approximations are shown to be valid for values of angular rate ratio $Γ= c/n_{0} > 1$, with accuracy decreasing as $Γ\rightarrow 1$, and singularities at and near $Γ= 1$. Extensions of the methodology to eccentric orbits are discussed, with commentary on the challenges of obtaining generally valid solutions for both near-circular and eccentric orbits.
Towards an Argument Pattern for the Use of Safety Performance Indicators
Creators: name: Ratiu, Daniel
name: Rohlinger, Tihomir
name: Stolte, Torben
name: Wagner, Stefan
Publisher: name: arXiv
Year: 2024
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: UL 4600, the safety standard for autonomous products, mandates the use of Safety Performance Indicators (SPIs) to continuously ensure the validity of safety cases by monitoring and taking action when violations are identified. Despite numerous examples of concrete SPIs available in the standard and companion literature, their contribution rationale for achieving safety is often left implicit. In this paper, we present our initial work towards an argument pattern for the use of SPIs to ensure validity of safety cases throughout the entire lifecycle of the system. Our aim is to make the implicit argument behind using SPIs explicit, and based on this, to analyze the situations that can undermine confidence in the chosen set of SPIs. To maintain the confidence in SPIs' effectiveness, we propose an approach to continuously monitor their expected performance by using meta-SPIs.
Multi-Unit Directional Measures of Association: Moving Beyond Pairs of Words
Creators: name: Dunn, Jonathan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: This paper formulates and evaluates a series of multi-unit measures of directional association, building on the pairwise ΔP measure, that are able to quantify association in sequences of varying length and type of representation. Multi-unit measures face an additional segmentation problem: once the implicit length constraint of pairwise measures is abandoned, association measures must also identify the borders of meaningful sequences. This paper takes a vector-based approach to the segmentation problem by using 18 unique measures to describe different aspects of multi-unit association. An examination of these measures across eight languages shows that they are stable across languages and that each provides a unique rank of associated sequences. Taken together, these measures expand corpus-based approaches to association by generalizing across varying lengths and types of representation.
Geometric Perspectives on Fundamental Solutions in the Linearized Satellite Relative Motion Problem
Creators: name: Burnett, Ethan
name: Schaub, Hanspeter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Space Physics (physics.space-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Understanding natural relative motion trajectories is critical to enable fuel-efficient multi-satellite missions operating in complex environments. This paper studies the problem of computing and efficiently parameterizing satellite relative motion solutions for linearization about a closed chief orbit. By identifying the analytic relationship between Lyapunov-Floquet transformations of the relative motion dynamics in different coordinate systems, new means are provided for rapid computation and exploration of the types of close-proximity natural relative motion available in various applications. The approach is demonstrated for the Keplerian relative motion problem with general eccentricities in multiple coordinate representations. The Keplerian assumption enables an analytic approach, leads to new geometric insights, and allows for comparison to prior linearized relative motion solutions.
Resistive switching of tetraindolyl derivative in ultrathin films: A potential candidate for non-volatile memory applications
Creators: name: Sarkar, Surajit
name: Banik, Hritinava
name: Suklabaidya, Sudip
name: Deb, Barnali
name: Majumdar, Swapan
name: Paul, Pabitra Kumar
name: Bhattacharjee, Debajyoti
name: Hussain, Syed Arshad
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Bipolar resistive switching using organic molecule is very promising for memory application owing to their advantages like simple device structure, low manufacturing cost, their stability and flexibility etc. Herein we report Langmuir-Blodgett and spin-coated film based bipolar resistive switching devices using organic material indole derivative. Pressure - area per molecule isotherm, Brewster Angle Microscopy, Atomic Force Microscopy and Scanning Electron Microscopy were used to have an idea about organization and morphology of the organic material onto thin film. Based on device structure and measurement protocol it is observed that the device made up of 1 shows non-volatile Resistive Random Access Memory behaviour with very high memory window, data sustainability and repeatability.Oxidation-reduction process as well as electric field driven conduction are the key behind such switching behaviour.Due to very good data retention, repeatability, stability and high device yield the switching device designed using compound 1may be a potential candidate for memory applications.
description: 18 pages, 9 figures, 1 table
Finding Variants for Construction-Based Dialectometry: A Corpus-Based Approach to Regional CxGs
Creators: name: Dunn, Jonathan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: This paper develops a construction-based dialectometry capable of identifying previously unknown constructions and measuring the degree to which a given construction is subject to regional variation. The central idea is to learn a grammar of constructions (a CxG) using construction grammar induction and then to use these constructions as features for dialectometry. This offers a method for measuring the aggregate similarity between regional CxGs without limiting in advance the set of constructions subject to variation. The learned CxG is evaluated on how well it describes held-out test corpora while dialectometry is evaluated on how well it can model regional varieties of English. Themethod is tested using two distinct datasets: First, the International Corpus of English representing eight outer circle varieties; Second, a web-crawled corpus representing five inner circle varieties. Results show that themethod (1) produces a grammar with stable quality across sub-sets of a single corpus that is (2) capable of distinguishing between regional varieties of Englishwith a high degree of accuracy, thus (3) supporting dialectometricmethods formeasuring the similarity between varieties of English and (4) measuring the degree to which each construction is subject to regional variation. This is important for cognitive sociolinguistics because it operationalizes the idea that competition between constructions is organized at the functional level so that dialectometry needs to represent as much of the available functional space as possible.
Reduction and reconstruction aspects of second-order dynamical systems with symmetry
Creators: name: Crampin, M.
name: Mestdag, T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 34A26; 37J15; 53C05

description: We examine the reduction process of a system of second-order ordinary differential equations which is invariant under a Lie group action. With the aid of connection theory, we explain why the associated vector field decomposes in three parts and we show how the integral curves of the original system can be reconstructed from the reduced dynamics. An illustrative example confirms the results.
description: 28 pages, to appear in Acta Appl. Math
Christian Lotz, Die anspruchsvollen Karten. Polnische, ost- und westdeutsche Auslandsrepräsentationen und der Streit um die Oder-Neiße-Grenze (1945-1972)
Creators: name: Krzoska, Markus
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2012

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 61 Nr. 3 (2012)
title: Αυτισμός και Φυσική Αγωγή, Νέες Εκπαιδευτικές Προσεγγίσεις
title: Autism and Physical Education, New Educational Approaches
titleType: AlternativeTitle
Creators: name: Καραμανλή, Μαρία
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2022
Subjects: Διαταραχή αυτιστικού φάσματος
Ειδική φυσική αγωγή
Κινητικές δραστηριότητες

description: Η παρούσα πτυχιακή εργασία με τίτλο «Αυτισμός και Φυσική Αγωγή, Νέες εκπαιδευτικές Προσεγγίσεις» αποτελεί μια βιβλιογραφική έρευνα που έχει σαν σκοπό να μελετήσει σφαιρικά την νευρολογική διαταραχή του Αυτισμού ή αλλιώς Διαταραχή Αυτιστικού Φάσματος. Μια διαταραχή που εκδηλώνεται στην πρώιμη παιδική ηλικία και επηρεάζει σχεδόν όλους τους τομείς της ανθρώπινης συμπεριφοράς. Έπειτα στοχεύει να αναφερθεί στην Επιστήμη της Φυσικής Αγωγής και να καταγράψει ολοπλεύρως την προσφορά της στην αντιμετώπιση της συγκεκριμένης διαταραχής σε πνευματικό, ψυχοκινητικό και εκπαιδευτικό επίπεδο. Στο πρώτο μέρος της εργασίας γίνεται μια πλήρης αναφορά στην Διαταραχή του Φάσματος του Αυτισμού (Autism Spectrum Disorders). Καταγράφεται ο ορισμός της και γίνεται μια ιστορική αναδρομή. Ακολουθεί αναλυτική αναφορά στα αίτια που ενοχοποιούνται για την εκδήλωσή της, στην κλινική της εικόνα και τις υποκατηγορίες στις οποίες διακρίνεται. Ολοκληρώνοντας το πρώτο μέρος καταγράφονται και νεώτερες απόψεις σχετικές με την αιτιοπαθογένεια των Διαταραχών Αυτιστικού Φάσματος. Στο δεύτερο μέρος παρουσιάζεται η Επιστήμη της Φυσικής αγωγής, ο ορισμός και ο σκοπός που υπηρετεί. Αφού γίνει μια σύντομη ιστορική αναδρομή προχωράμε στη σχέση που αυτή έχει με την νευροαναπτυξιακή διαταραχή του Αυτισμού. Αναλύονται οι τομείς της ξεχωριστά και τα οφέλη που αυτοί προσφέρουν σ΄ όσους ανήκουν στο Φάσμα του Αυτισμού. Τελειώνοντας την εν λόγω ανασκοπική εργασία παρουσιάζονται νεώτερες μελέτες που αφορούν τις πιο πρόσφατες εκπαιδευτικές προσεγγίσεις στον τομέα της φυσικής δραστηριότητας και άσκησης για τα παιδιά που ανήκουν στο Φάσμα των Αυτιστικών Διαταραχών. Καθώς, και μια μελέτη περίπτωσης που στοχεύει να ενισχύσει την σημαντική συμβολή της Ειδικής Φυσικής Αγωγής στη ζωή όσων έχουν διαγνωσθεί με Διαταραχή Αυτισμού.
Quantum limited measurements of atomic scattering properties
Creators: name: Rey, A. M.
name: Jiang, L.
name: Lukin, M. D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We propose a method to perform precision measurements of the interaction parameters in systems of N ultra-cold spin 1/2 atoms. The spectroscopy is realized by first creating a coherent spin superposition of the two relevant internal states of each atom and then letting the atoms evolve under a squeezing Hamiltonian. The non-linear nature of the Hamiltonian decreases the fundamental limit imposed by the Heisenberg uncertainty principle to N^(-2), a factor of N smaller than the fundamental limit achievable with non-interacting atoms. We study the effect of decoherence and show that even with decoherence, entangled states can outperform the signal to noise limit of non-entangled states. We present two possible experimental implementations of the method using Bose-Einstein spinor condensates and fermionic atoms loaded in optical lattices and discuss their advantages and disadvantages.
description: 7 pages, 5 figures. References added
Jacques Le Rider, Heinz Raschel (Hrsg.), La Galicie au temps des Habsbourg (1772-1918). Histoire, société, cultures en contact
Creators: name: Hein-Kircher, Heidi
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2014

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 63 Nr. 4 (2014)
The transition from highly to fully stretched polymer brushes in good solvent
Creators: name: Coluzza, Ivan
name: Hansen, Jean-Pierre
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The stretching of brushes of long polymers grafted to a planar surface is investigated byMonte Carlo simulations in the limit of very high grafting densities, as achieved in recent experiments. The monomer density profiles are shown to deviate considerably from the parabolic limiting form predicted by self-consistent field theory. A rapid transition is observed from parabolic to fully stretched polymers, characterized by a dramatic change in the end-monomer height distribution and by a clear cross-over in the slope of the brush height versus scaled grafting density.
Weak Lensing Probes of Modified Gravity
Creators: name: Schmidt, Fabian
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the effect of modifications to General Relativity on large scale weak lensing observables. In particular, we consider three modified gravity scenarios: f(R) gravity, the DGP model, and TeVeS theory. Weak lensing is sensitive to the growth of structure and the relation between matter and gravitational potentials, both of which will in general be affected by modified gravity. Restricting ourselves to linear scales, we compare the predictions for galaxy-shear and shear-shear correlations of each modified gravity cosmology to those of an effective Dark Energy cosmology with the same expansion history. In this way, the effects of modified gravity on the growth of perturbations are separated from the expansion history. We also propose a test which isolates the matter-potential relation from the growth factor and matter power spectrum. For all three modified gravity models, the predictions for galaxy and shear correlations will be discernible from those of Dark Energy with very high significance in future weak lensing surveys. Furthermore, each model predicts a measurably distinct scale dependence and redshift evolution of galaxy and shear correlations, which can be traced back to the physical foundations of each model. We show that the signal-to-noise for detecting signatures of modified gravity is much higher for weak lensing observables as compared to the ISW effect, measured via the galaxy-CMB cross-correlation.
description: 16 pages, 8 figures; accepted for publication in Phys. Rev. D; v2: references added; v3: clarifications and additions to the text in response to referee
Evanescent wave transport and shot noise in graphene: ballistic regime and effect of disorder
Creators: name: Danneau, R.
name: Wu, F.
name: Craciun, M. F.
name: Russo, S.
name: Tomi, M. Y.
name: Salmilehto, J.
name: Morpurgo, A. F.
name: Hakonen, P. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have investigated electrical transport and shot noise in graphene field effect devices. In large width over length ratio $W/L$ graphene strips, we have measured shot noise at low frequency ($f$ = 600--850 MHz) in the temperature range of 4.2--30 K. We observe a minimum conductivity of $\frac{4e^{2}}{πh}$ and a finite and gate dependent Fano factor reaching the universal value of 1/3 at the Dirac point, i.e. where the density of states vanishes. These findings are in good agreement with the theory describing that transport at the Dirac point should occur via evanescent waves in perfect graphene samples with large $W/L$. Moreover, we show and discuss how disorder and non-parallel leads affect both conductivity and shot noise.
description: Extended version (19 pages, 10 figures) of Phys. Rev. Lett. 100, 196802 (2008). Additional data on the effect of disorder and non-parallel leads. Submitted for publication in Journal of Low Temperature Physics for the Proceedings of the International Symposium on Quantum Phenomena and Devices at Low Temperatures (ULTI 2008), Espoo, Finland
The Search for $μ^+\to e^+ γ$ with 10$^{-14}$ Sensitivity: the Upgrade of the MEG Experiment
Creators: name: The MEG II Collaboration
name: Baldini, Alessandro M.
name: Baranov, Vladimir
name: Biasotti, Michele
name: Boca, Gianluigi
name: Cattaneo, Paolo W.
name: Cavoto, Gianluca
name: Cei, Fabrizio
name: Chiappini, Marco
name: Chiarello, Gianluigi
name: Corvaglia, Alessandro
name: Cuna, Federica
name: Maso, Giovanni dal
name: de Bari, Antonio
name: De Gerone, Matteo
name: Francesconi, Marco
name: Galli, Luca
name: Gallucci, Giovanni
name: Gatti, Flavio
name: Grancagnolo, Francesco
name: Grassi, Marco
name: Grigoriev, Dmitry N.
name: Hildebrandt, Malte
name: Ieki, Kei
name: Ignatov, Fedor
name: Iwamoto, Toshiyuki
name: Kettle, Peter-Raymond
name: Khomutov, Nikolay
name: Kobayashi, Satoru
name: Kolesnikov, Alexander
name: Kravchuk, Nikolay
name: Krylov, Victor
name: Kuchinskiy, Nikolay
name: Kyle, William
name: Libeiro, Terence
name: Malyshev, Vladimir
name: Meucci, Manuel
name: Mihara, Satoshi
name: Molzon, William
name: Mori, Toshinori
name: Mtchedlishvili, Alexander
name: Nakao, Mitsutaka
name: Nicolò, Donato
name: Nishiguchi, Hajime
name: Ogawa, Shinji
name: Onda, Rina
name: Ootani, Wataru
name: Oya, Atsushi
name: Palo, Dylan
name: Panareo, Marco
name: Papa, Angela
name: Pettinacci, Valerio
name: Popov, Alexander
name: Renga, Francesco
name: Ritt, Stefan
name: Rossella, Massimo
name: Rozhdestvensky, Aleksander
name: Schwendimann, Patrick
name: Shimada, Kohei
name: Signorelli, Giovanni
name: Stoykov, Alexey
name: Tassielli, Giovanni F.
name: Toyoda, Kazuki
name: Uchiyama, Yusuke
name: Usami, Masashi
name: Voena, Cecilia
name: Yanai, Kosuke
name: Yamamoto, Kensuke
name: Yonemoto, Taku
name: Yudin, Yury V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The MEG experiment took data at the Paul Scherrer Institute in the years 2009--2013 to test the violation of the lepton flavour conservation law, which originates from an accidental symmetry that the Standard Model of elementary particle physics has, and published the most stringent limit on the charged lepton flavour violating decay $μ^+ \rightarrow {\rm e}^+ γ$: BR($μ^+ \rightarrow {\rm e}^+ γ$) $<4.2 \times 10^{-13}$ at 90% confidence level. The MEG detector has been upgraded in order to reach a sensitivity of $6\times10^{-14}$. The basic principle of MEG II is to achieve the highest possible sensitivity using the full muon beam intensity at the Paul Scherrer Institute ($7\times10^{7}$ muons/s) with an upgraded detector. The main improvements are better rate capability of all sub-detectors and improved resolutions while keeping the same detector concept. In this paper, we present the current status of the preparation, integration and commissioning of the MEG II detector in the recent engineering runs.
description: 12 pages, 4 figures. The version of acceptance for Symmetry
Quantum Knizhnik-Zamolodchikov equation: reflecting boundary conditions and combinatorics
Creators: name: Di Francesco, P.
name: Zinn-Justin, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: Combinatorics (math.CO)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We consider the level 1 solution of quantum Knizhnik-Zamolodchikov equation with reflecting boundary conditions which is relevant to the Temperley--Lieb model of loops on a strip. By use of integral formulae we prove conjectures relating it to the weighted enumeration of Cyclically Symmetric Transpose Complement Plane Partitions and related combinatorial objects.
Challenges facing holographic models of QCD
Creators: name: Cohen, Thomas D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This paper, written in memory of Manoj Banerjee, takes a critical look at holographic models of QCD focusing on ``practical'' models in which the five dimensional theory is treated classically. A number of theoretical and phenomenological challenges to the approach are discussed.
description: This paper was written for an issue in memory of Manoj Banerjee in the Indian Journal of Physics
Günter Uschtrin (Hrsg.), Wo liegt Coadjuthen? Die Geschichte eines ostpreußischen Kirchspiels im ehemaligen Memelland
Creators: name: Thierfelder, Stefan
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2012

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 61 Nr. 3 (2012)
Many-body protected entanglement generation in interacting spin systems
Creators: name: Rey, A. M.
name: Jiang, L.
name: Fleischhauer, M.
name: Demler, E.
name: Lukin, M. D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We discuss a method to achieve decoherence resistent entanglement generation in two level spin systems governed by gapped and multi-degenerate Hamiltonians. In such systems, while the large number of degrees of freedom in the ground state levels allows to create various quantum superpositions, the energy gap prevents decoherence. We apply the protected evolution to achieve decoherence resistent generation of many particle GHZ states and show it can significantly increase the sensitivity in frequency spectroscopy. We discuss how to engineer the desired many-body protected manifold in two specific physical systems, trapped ions and neutral atoms in optical lattices, and present simple expressions for the fidelity of GHZ generation under non-ideal conditions.
description: 11 pages, 7 figures. This paper is a longer version of the paper cond-mat/0703108
The dwarf galaxy population in nearby clusters from the KIWICS survey
Creators: name: Choque-Challapa, Nelvy
name: Aguerri, J. Alfonso L.
name: Piña, Pavel E. Mancera
name: Peletier, Reynier
name: Venhola, Aku
name: Verheijen, Marc
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We analyse a sample of twelve galaxy clusters, from the Kapteyn IAC WEAVE INT Cluster Survey (KIWICS) looking for dwarf galaxy candidates. By using photometric data in the $r$ and $g$ bands from the Wide Field Camera (WFC) at the 2.5-m Isaac Newton telescope (INT), we select a sample of bright dwarf galaxies (M$_r$ $\leq$ -15.5 mag) in each cluster and analyse their spatial distribution, stellar colour, and as well as their Sérsic index and effective radius. We quantify the dwarf fraction inside the $R_{200}$ radius of each cluster, which ranges from $\sim$ 0.7 to $\sim$ 0.9. Additionally, when comparing the fraction in the inner region with the outermost region of the clusters, we find that the fraction of dwarfs tends to increase going to the outer regions. We also study the clustercentric distance distribution of dwarf and giant galaxies (M$_r$ $
description: Accepted for publication in MNRAS
Sure Wins, Separating Probabilities and the Representation of Linear Functionals
Creators: name: Cassese, Gianluca
Publisher: name: arXiv
Year: 2007
Subjects: subject: Functional Analysis (math.FA)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 28A25, 28C05

description: We discuss conditions under which a convex cone $\K\subset \R^Ω$ admits a probability $m$ such that $\sup_{k\in \K} m(k)\leq0$. Based on these, we also characterize linear functionals that admit the representation as finitely additive expectations. A version of Riesz decomposition based on this property is obtained as well as a characterisation of positive functionals on the space of integrable functions
Scalings of Elliptic Flow for a Fluid at Finite Shear Viscosity
Creators: name: Ferini, G.
name: Colonna, M.
name: Di Toro, M.
name: Greco, V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Within a parton cascade approach we investigate the scaling of the differential elliptic flow $v_2(p_T)$ with eccentricity $ε_x$ and system size and its sensitivity to finite shear viscosity. We present calculations for shear viscosity to entropy density ratio $η/s$ in the range from $1/4π$ up to $1/π$, finding that the $v_2$ saturation value varies by about a factor 2. Scaling of $v_2(p_T)/ε_x$ is seen also for finite $η/s$ which indicates that it does not prove a perfect hydrodynamical behavior, but is compatible with a plasma at finite $η/s$. Introducing a suitable freeze-out condition, we see a significant reduction of $v_2(p_T)$ especially at intermediate $p_T$ and for more peripheral collisions. This causes a breaking of the scaling for both $v_2(p_T)$ and the $p_T-$averaged $v_2$, while keeping the scaling of $v_2(p_T)/\la v_2\ra$. This is in better agreement with the experimental observations and shows as a first indication that the $η/s$ should be significantly lower than the pQCD estimates. We finally point out the necessity to include the hadronization via coalescence for a definite evaluation of $η/s$ from intermediate $p_T$ data.
description: 5 pages, 5 figures. Two points in fig.4 has been changed
Antony Polonsky, The Jews in Poland and Russia Bd. 1
Creators: name: Hein-Kircher, Heidi
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 2 (2013): Nationalisierung und Pragmatismus. Staatliche Institutionen und Minderheiten in Polen 1918-1939
Verification of urban energy balance models
Creators: name: Loudon, Sheila Margaret
Publisher: name: University of British Columbia
Year: 2010

description: Three urban energy balance models have been tested against data gathered in a suburb of Vancouver, British Columbia. The major incentive behind this study was that these models had not previously been verified in urban areas, due mainly to the lack of appropriate data. As the available models represent a range of complexity, and utilize a variety of different methods, it was thought to be worthwhile to test all three. Input for the models consists of temporal and spatial information, meteorological data, and site surface characteristics. Values for the former two sets of inputs were relatively easy to come by. Values for the surface characteristics, however, were quite difficult to determine with any degree of confidence, due to the complexity of the suburban surface. This was particularly discouraging because it was found that the models were very sensitive to the values chosen for these inputs. The sensitivity analyses also showed that the simplest model (Myrup, 1969), of the three, sometimes exhibited rather unrealistic responses to variations in the input parameters. The other two models (Ackerman, 1977; Carlson and Boland, 1978) usually showed more reasonable responses. Eighteen days, from the available data set, were chosen for testing the models. The modelled values were compared to those observed using comparative statistics, scatter diagrams, and time series plots. It was found that the errors in the modelled net all-wave radiation were quite small, and were due mainly to errors in the modelling of the net long-wave radiaton. The modelled surface heat fluxes, on the other hand, were in poor agreement with those observed. This was attributed to the methods used for representing surface moisture. The errors in the mixed layer heights, as produced by the two more complex models, were also high. Unfortunately, the modelled surface temperatures could not be quantitatively assessed due to the lack of appropriate measurements. However, those of the simple model seemed to be unrealistic, whereas those of the other two models seemed reasonable. It was concluded that without some improvements, particularly in surface moisture representation, the models would have little practical value.
Comprehensive study of five candidate delta Scuti-type pulsators in detached eclipsing binaries
Creators: name: Pawar, T.
name: Hełminiak, K. G.
name: Moharana, A.
name: Pawar, G.
name: Pyatnytskyy, M.
name: Lala, H. N.
name: Konacki, M.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Pulsating stars in eclipsing binaries (EBs) provide an excellent opportunity to obtain precise, model-independent stellar parameters for studying oscillations in detail. One common class of pulsators in these EBs exhibits delta Scuti-type oscillations. Characterising these pulsators using the precise parameters obtained from EB modelling enhances our understanding of such stars and strengthens asteroseismic studies.
 We conducted a comprehensive photometric and spectroscopic analysis of candidate pulsators in detached EBs to expand the sample of systems with accurately determined absolute parameters. We performed radial velocity and light curve modelling to estimate the absolute stellar parameters, along with detailed spectroscopic modelling to obtain global metallicity and temperatures. Frequency power spectra were derived from the residuals of binary modelling. Isochrones were used to determine the stars' ages, which were then compared to theoretically obtained values.
 We present a detailed analysis of four candidate delta Scuti-type pulsators in EBs and update the light curve analysis of the previously studied system TIC 308953703. The masses and radii of the components are constrained with high accuracy, aiding in age estimation. We perform a Fourier analysis of the observed oscillations and explore their origin. For TIC 81702112, we report tidal effects causing amplitude variation in the oscillation frequencies over the orbital phase.
Die Durchsetzung einer ästhetisch-symbolischen Exzellenz. Der Aufstieg des Dichters Durs Grünbein in den neunziger Jahren
Creators: name: Tommek, Heribert
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2012

description: Il lavoro indaga la "straordinaria" ascesa simbolica di Durs Grünbein  nel campo letterario della Germania unificata degli anni '90. La genesi  di un'eccellenza simbolico-estetica si compie tramite l'interazione di  strutture del campo e dell'habitus, la quale viene a trasmettersi in  modo sublimato nell'opera. In questa prospettiva di analisi del campo  l'ascesa di Grünbein può essere descritta come il passaggio da una  posizione di avanguardia ad una posizione di rivalutazione nobilitante.  Questo itinerario si compie in seguito ad una lacuna strutturale del  campo mediante la "ricerca" di un nuovo "super-autore" della Germania  unificata, nella quale lo Zeitgeist enfatico giunge a rispecchiarsi  nella costruzione di una nuova identità (auspicata) della cosiddetta  "Repubblica berlinese". Si tratta in fondo di un'adesione nobilitante al  "patrimonio della cultura mondiale", della legittima prosecuzione della  tradizione della modernità classica internazionale e dall'altro lato  della riconquista di tradizioni nazionali e della creazione di una  posizione autoriale rappresentativa come poeta della grandezza negata di  una "nazione tardiva" (Plessner).
description: Annali Online  Lettere - Ferrara, IV 1 (2009)
Loop Quantum Cosmology corrections to inflationary models
Creators: name: Artymowski, Michal
name: Lalak, Zygmunt
name: Szulc, Lukasz
Publisher: name: arXiv
Year: 2008
Subjects: 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: In the recent years the quantization methods of Loop Quantum Gravity have been successfully applied to the homogeneous and isotropic Friedmann-Robertson-Walker space-times. The resulting theory, called Loop Quantum Cosmology (LQC), resolves the Big Bang singularity by replacing it with the Big Bounce. We argue that LQC generates also certain corrections to field theoretical inflationary scenarios. These corrections imply that in the LQC the effective sonic horizon becomes infinite at some point after the bounce and that the scale of the inflationary potential implied by the COBE normalisation increases. The evolution of scalar fields immediately after the Bounce becomes modified in an interesting way. We point out that one can use COBE normalisation to establish an upper bound on the quantum of length of LQG.
description: 16 pages, 1 figure, plain Latex
Easyjet: tre film berlinesi sulla musica techno
Creators: name: Galli, Matteo
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2012

description: Starting from a historical-sociologic background which authenticates the  proportions of the Techno phenomenon on the Berlin stage, the essay  analyzes three German movies of the last decade, two documentaries and a  fiction movie, which narrate according to different ways some of the  typological characteristics of the Techno universe: time and space  suspension, the role of sex, drugs consumption, music.
description: Annali Online  Lettere - Ferrara, IV 1 (2009)
Scoping Review: Cardiac Vagal Recovery from Acute Psychological Stress in Human Adults
Creators: name: Chen, Frances
name: Roddick, Charlotte
Publisher: name: OSF Registries
Year: 2024
Subjects: subject: Medicine and Health Sciences
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: Cardiac vagal recovery following psychological stress is increasingly recognized as an important area of research with implications for health and well-being. However, vagal recovery has historically not been an explicit focus of research, and understanding of vagal recovery from acute psychological stress remains limited. A preliminary search of MEDLINE, PsycINFO, and the Cochrane Database of Systematic Reviews was conducted and no current or in-progress scoping reviews or systematic reviews on the topic were identified. To address this gap in the literature, the purposes of the proposed scoping review are (a) to summarize and characterize the methods used to operationalize and measure vagal recovery from acute psychological stressors and negative emotional challenges, and (b) to examine individual differences and situational factors that may influence vagal recovery.
Erotika pathemata nel teatro eschileo: un itinerario
Creators: name: Carpanelli, Francesco
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2014

description: Fragments of Aeschylus need a careful review by scholars, especially after the latest collections recently produced. This paper attempts to bring together some fragmentary works of the author under the common theme of Love in such a way as to provide an example of how it should work in connection with the texts as we have, in this case The Suppliants. Poetic texts after the fifth century BC., both Greek and Latin, and archaeological production, may give new life to the myths dealt by the tragedians that would otherwise be lost if they were committed only to the reading of a few surviving fragments.
description: Annali Online  Lettere - Ferrara, VIII 2 (2013)
An infrared ring around the magnetar SGR 1900+14
Creators: name: Wachter, S.
name: Ramirez-Ruiz, E.
name: Dwarkadas, V. V.
name: Kouveliotou, C.
name: Granot, J.
name: Patel, S. K.
name: Figer, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Magnetars are a special class of slowly rotating neutron stars with extremely strong magnetic fields -- at least an order of magnitude larger than those of the "normal" radio pulsars. The potential evolutionary links and differences between these two types of objects are still unknown; recent studies, however, have provided circumstantial evidence connecting magnetars with very massive progenitor stars. Here we report the discovery of an infrared elliptical ring or shell surrounding the magnetar SGR 1900+14. The appearance and energetics of the ring are difficult to interpret within the framework of the progenitor's stellar mass loss or the subsequent evolution of the supernova remnant. We suggest instead that a dust-free cavity was produced in the magnetar environment by the giant flare emitted by the source in August 1998. Considering the total energy released in the flare, the theoretical dust--destruction radius matches well with the observed dimensions of the ring. We conclude that SGR 1900+14 is unambiguously associated with a cluster of massive stars, thereby solidifying the link between magnetars and massive stars.
description: 19 pages, 1 figure
Transition metal oxides using quantum Monte Carlo
Creators: name: Wagner, Lucas K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The transition metal-oxygen bond appears prominently throughout chemistry and solid-state physics. Many materials, from biomolecules to ferroelectrics to the components of supernova remnants contain this bond in some form. Many of these materials' properties strongly depend on fine details of the TM-O bond and intricate correlation effects, which make accurate calculations of their properties very challenging. We present quantum Monte Carlo, an explicitly correlated class of methods, to improve the accuracy of electronic structure calculations over more traditional methods like density functional theory. We find that unlike s-p type bonding, the amount of hybridization of the d-p bond in TM-O materials is strongly dependant on electronic correlation.
description: 20 pages, 4 figures, to appear as a topical review in J. Physics: Condensed Matter
Aradinae Amyot & Serville 1843
Creators: name: Heiss, Ernst
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Aradidae

description: Subfamily Aradinae Amyot & Serville 1843
Aradites Brullé, 1836: 326 (as family). Type genus: Aradus Fabricius, 1803.
description: Published as part of Heiss, Ernst, 2012, Annotated catalogue of the flat bug family Aradidae Brullé, 1836 of Madagascar and adjacent islands (Hemiptera: Heteroptera), pp. 45-63 in Zootaxa 3426 (1) on page 48, DOI: 10.11646/zootaxa.3426.1.3, http://zenodo.org/record/214110
Stefan Troebst, Johanna Wolf (Hrsg.), Erinnern an den Zweiten Weltkrieg. Mahnmale und Museen in Mittel- und Osteuropa
Creators: name: Brüggemann, Karsten
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2014

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 63 Nr. 1 (2014): Grenzen und Räume. Neue Forschungen und Forschungsimpulse
Domain Growth Kinetics in Active Binary Mixtures
Creators: name: Mondal, Sayantan
name: Das, Prasenjit
Publisher: name: arXiv
Year: 2024
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study motility-induced phase separation (MIPS) in symmetric and asymmetric active binary mixtures. We start with the coarse-grained run-and-tumble bacterial model that provides evolution equations for the density fields $ρ_i(\vec r, t)$. Next, we study the phase separation dynamics by solving the evolution equations using the Euler discretization technique. We characterize the morphology of domains by calculating the equal-time correlation function $C(r, t)$ and the structure factor $S(k, t)$, both of which show dynamical scaling. The form of the scaling functions depends on the mixture composition and the relative activity of the species, $Δ$. For $k\rightarrow\infty$, $S(k, t)$ follows Porod's law: $S(k, t)\sim k^{-(d+1)}$ and the average domain size $L(t)$ shows a diffusive growth as $L(t)\sim t^{1/3}$ for all mixtures.
description: 19 Pages,11 Figures,
title: Εκπαίδευση και οικονομική ανάπτυξη
title: Education and economic development
titleType: AlternativeTitle
Creators: name: Μητσιάκου, Χριστίνα
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2022
Subjects: subject: Οικονομική μεγέθυνση
subject: Δαπάνες για την εκπαίδευση
subject: Ακαθάριστο Εγχώριο Προϊόν
subject: Ανθρώπινο κεφάλαιο

description: Η σχέση μεταξύ της εκπαίδευση και της οικονομική ανάπτυξης διερευνάται θεωρητικά και εμπειρικά από την δεκαετία του 1970, με την ύπαρξη αντιφατικών ευρημάτων γύρω από τον αντίκτυπο της εκπαίδευσης στην οικονομική μεγέθυνση, σύμφωνα με τη βιβλιογραφία. Σκοπός της έρευνας είναι να παρέχει μια καθαρή εικόνα της επίδρασης διαφόρων μεταβλητών με σημαντικότερη τη μεταβλητή της εκπαίδευσης στην οικονομική μεγέθυνση 15 χωρών της Ευρώπης, κατά τη χρονική περίοδο από το 2010 έως το 2020. Τα αποτελέσματα της έρευνας απέδειξαν ότι η εκπαίδευση έχει θετική ισχυρή επίδραση σε όλες τις πτυχές της ζωής του κάθε ατόμου και διαδραματίζει στρατηγικό ρόλο στην λειτουργία και την εξέλιξη της οικονομίας και γενικότερα της κοινωνίας και της πολιτικής.
Python script for computing 30 min NEE CO2 from 5-min interval Oklahoma Mesonet data
Creators: name: Dhakal, K.
name: Wagle, P.
name: Kakani, V. G.
name: Sharma, S.
Publisher: name: Zenodo
Year: 2021
Subjects: NEE; Switchgrass,

description: Python script for computing 30 min NEE CO2 from 5-min interval Oklahoma Mesonet data for the paper, "Empirical Approach to Estimate Net Ecosystem Exchange Using High Frequency Mesonet Observations across Potential Switchgrass Establishment Landscapes in Oklahoma". The script computes NEE for each of the Mesonet sites, which can be further processed into daily, weekly, monthly, and seasonal NEE uptake for each site. Citation for the preprint: Dhakal, K., Kakani, V.G., Wagle, P., and Sharma, S. Empirical Approach to Estimate Net Ecosystem Exchange Using High Frequency Mesonet Observations across Potential Switchgrass Establishment Landscapes in Oklahoma. Earth and Space Science Open Archive, 27. doi: doi:10.1002/essoar.10508573.1.
The electronic and transport properties of a molecular junction studied by an integrated piecewise thermal equilibrium approach
Creators: name: Tsai, M. -H.
name: Lu, T. -H.
name: Tang, Y. -H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: An integrated piecewise thermal equilibrium approach based on the first-principles calculation method has been developed to calculate bias dependent electronic structures and current- and differential conductance-voltage characteristics of the gold-benzene-1,4-dithiol-gold molecular junction. The calculated currents and differential conductance have the same order of magnitude as experimental ones. An electron transfer was found between the two electrodes when a bias is applied, which renders the two electrodes to have different local electronic structures. It was also found that when Au 5d electrons were treated as core electrons the calculated currents were overestimated, which can be understood as an underestimate of the Au-S covalent bonding and consequently the contact potential barrier and the replacement of delocalized Au 5d carriers by more itinerant delocalized Au 6sp carriers in the electrodes.