cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A scanning planar Yagi-Uda antenna for fluorescence detection
Creators: name: Soltani, Navid
name: Esfahany, Elham Rabbany
name: Druzhinin, Sergey I.
name: Schulte, Gregor
name: Müller, Julian
name: Sledz, Florian
name: Flatae, Assegid Mengistu
name: Butz, Benjamin
name: Schönherr, Holger
name: Markesevic, Nemanja
name: Agio, Mario
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: An effective approach to improve the detection efficiency of nanoscale light sources relies on a planar antenna configuration, which beams the emitted light into a narrow cone. Planar antennas operate like optical Yagi-Uda antennas, where reflector and director elements are made of metal films. Here we introduce and investigate, both theoretically and experimentally, a scanning implementation of a planar antenna. Using a small ensemble of molecules contained in fluorescent nanobeads placed in the antenna, we independently address the intensity, the radiation pattern and the decay rate as a function of distance between a flat-tip scanning gold wire (reflector) and a thin gold film coated on a glass coverslip (director). The scanning planar antenna changes the radiation pattern of a single fluorescent bead and it beams light into a narrow cone down to angles of 45° (full width at half maximum). Moreover, the collected signal compared to the case of a glass coverslip is larger than a factor of 3, which is mainly due to the excitation enhancement. These results offer a better understanding of the modification of light-matter interaction by planar antennas and they hold promise for applications, such as sensing, imaging and diagnostics.
Magnetically moderated outbursts of WZ Sagittae
Creators: name: Matthews, O. M.
name: Speith, R.
name: Wynn, G. A.
name: West, R. G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We argue that the quiescent value of the viscosity parameter of the accretion disc in WZ Sge may be alpha_{cold}~0.01, in agreement with estimates of alpha_{cold} for other dwarf novae. Assuming the white dwarf in WZ Sge to be magnetic, we show that, in quiescence, material close to the white dwarf can be propelled to larger radii, depleting the inner accretion disc. The propeller therefore has the effect of stabilizing the inner disc and allowing the outer disc to accumulate mass. The outbursts of WZ Sge are then regulated by the (magnetically determined) evolution of the surface density of the outer disc at a radius close to the tidal limit. Numerical models confirm that the recurrence time can be significantly extended in this way. The outbursts are expected to be superoutbursts since the outer disc radius is forced to exceed the tidal (3:1 resonance) radius. The large, quiescent disc is expected to be massive, and to be able to supply the observed mass accretion rate during outburst. We predict that the long-term spin evolution of the white dwarf spin will involve a long cycle of spin up and spin down phases.
description: 12 pages, 11 figures, accepted by MNRAS
Parallel dynamics of continuous Hopfield model revisited
Creators: name: Mimura, Kazushi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We have applied the generating functional analysis (GFA) to the continuous Hopfield model. We have also confirmed that the GFA predictions in some typical cases exhibit good consistency with computer simulation results. When a retarded self-interaction term is omitted, the GFA result becomes identical to that obtained using the statistical neurodynamics as well as the case of the sequential binary Hopfield model.
description: 4 pages, 2 figures
Μελέτη τρωσιμότητας σε υπολογιστές και κινητές συσκευές
Creators: name: Ευαγγέλου, Ευάγγελος Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Τρωσιμότητα 5. Κακόβουλος χρήστης 9. Windows 13. iOS
Υπολογιστής 6. Ασφάλεια δικτύων 10. Linux 14. GFI LanGuard
Κινητές συσκευές 7. Χακερ 11. Android 15. Nessus Essentials
Ταμπλέτες 8. Επιθέσεις 12. MacOS
Vulnerability 5. Malicious user 9. Windows 13. iOS
PC 6. Network security 10. Linux 14. GFI LanGuard
Mobile devices 7. Hacker 11. Android 15. Nessus Essentials
Tablets 8. Attack 12. MacOS

description: Σκοπός της παρούσας διπλωματικής εργασίας είναι να μελετήσει την τρωσιμότητα σε υπολογιστές και σε κινητές συσκευές. Αρχικά, παρουσιάζεται μία εισαγωγή σχετικά με τα θέματα ασφάλειας που αντιμετωπίζουν σήμερα τα υπολογιστικά συστήματα και γίνεται μία θεωρητική ανάλυση των μοντέλων ασφάλειας που εφαρμόζονται και των βασικών εννοιών που τα αποτελούν. Στη συνέχεια γίνεται αναφορά στους κακόβουλους – μη εξουσιοδοτημένους χρήστες που θέλουν να αποκτήσουν πρόσβαση σε κάποιο υπολογιστικό σύστημα και στις μεθόδους και τεχνικές που ακολουθούν ώστε να πραγματοποιήσουν το σκοπό τους. Ακόμη γίνεται αναφορά στα μέτρα προστασίας που πρέπει να λάβει ένας οικιακός χρήστης, μία εταιρία ή ένας οργανισμός για να μπορέσει να προστατέψει ένα υπολογιστικό σύστημα ή ένα δίκτυο υπολογιστών. Τέλος, γίνεται η παρουσίαση δύο εργαλείων (GFI LanGuard και Nessus Essentials) για τον έλεγχο τρωτών σημείων σε υπολογιστές και κινητές συσκευές και τα οποία χρησιμοποιήθηκαν για να γίνει σε πρακτικό επίπεδο ο έλεγχος και ο εντοπισμός τρωτών σημείων σε διάφορα λειτουργικά συστήματα
description: The purpose of this dissertation is to study the vulnerabilities in computers and mobile devices. At first, the reader is introduced to the security issues that computer systems are facing today. In addition, a theoretical analysis of the security models applied and the basic concepts that make them up is discussed. Then, a reference to malicious - unauthorized users is made who want to gain access to a computer system and the methods and techniques that they follow to achieve their purpose. Also, it deals with the protection measures that a home user, a company or an organization must take in order to be prevent cyber-attacks. Finally, two tools are being presented (GFI LanGuard and Nessus Essentials) which are used in order to check vulnerabilities in computers and mobile devices and which they have been used to control and locate such vulnerabilities in a practical level on various operating systems
Intrinsic Doping at YBCO-metal Interfaces: Quantitative Results
Creators: name: Schwingenschloegl, Udo
name: Schuster, Cosima
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Charge redistribution in high-Tc superconductors due to structural defects or interfaces is known to be crucial for electronic applications as the band structure is modified on a local scale. In order to investigate these effects in more detail, we address the normal-state properties of YBa2Cu3O7 (YBCO) in the vicinity of YBCO-metal interfaces by electronic structure calculations for well relaxed interface configurations. Our findings can be interpreted in terms of a band-bending mechanism complemented by local screening effects. We derive quantitative results for the intrinsic doping of the superconducting CuO2 planes due to the metal interface. In particular, the net charge transfer amounts to 0.13 electrons in favour of each intraplane copper site, which appears to be a typical value for interfaces of high-Tc superconductors, thus opening great possibilities for a systematic optimization of wires and tapes from high-Tc materials.
description: 7 pages, 3 figures
Quantum variational optimization: The role of entanglement and problem hardness
Creators: name: Díez-Valle, Pablo
name: Porras, Diego
name: García-Ripoll, Juan José
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum variational optimization has been posed as an alternative to solve optimization problems faster and at a larger scale than what classical methods allow. In this paper we study systematically the role of entanglement, the structure of the variational quantum circuit, and the structure of the optimization problem, in the success and efficiency of these algorithms. For this purpose, our study focuses on the variational quantum eigensolver (VQE) algorithm, as applied to quadratic unconstrained binary optimization (QUBO) problems on random graphs with tunable density. Our numerical results indicate an advantage in adapting the distribution of entangling gates to the problem's topology, specially for problems defined on low-dimensional graphs. Furthermore, we find evidence that applying conditional value at risk type cost functions improves the optimization, increasing the probability of overlap with the optimal solutions. However, these techniques also improve the performance of Ansätze based on product states (no entanglement), suggesting that a new classical optimization method based on these could outperform existing NISQ architectures in certain regimes. Finally, our study also reveals a correlation between the hardness of a problem and the Hamming distance between the ground- and first-excited state, an idea that can be used to engineer benchmarks and understand the performance bottlenecks of optimization methods.
description: 12 pages, 10 figures, close to published version
Kinetic Monte-Carlo Algorithms for Active-Matter systems
Creators: name: Klamser, Juliane U.
name: Dauchot, Olivier
name: Tailleur, Julien
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study kinetic Monte-Carlo (KMC) descriptions of active particles. By relying on large discrete time steps, KMC algorithms accelerate the relaxational dynamics of active systems towards their steady-state. We show, however, that their continuous-time limit is ill-defined, leading to the vanishing of trademark behaviors of active matter such as the motility-induced phase separation, ratchet effects, as well as to a diverging mechanical pressure. We show how mixing passive steps with active ones regularizes this behavior, leading to a well-defined continuous-time limit. We propose new AKMC algorithms whose continuous-time limits lead to the active dynamics of Active-Ornstein Uhlenbeck, Active Brownian, and Run-and-Tumbles particles.
Identified Particle Production in d+Au and p+p collisions at RHIC
Creators: name: Yang, Hongyan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The BRAHMS experiment at RHIC has measured the transverse momentum spectra of charged pions, kaons and (anti-)protons over a wide range of rapidity in d+Au and p+p collisions at $\sqrt{s_{NN}}=200 $GeV. The nuclear modification factor $R_{dAu}$ at forward rapidities shows a clear suppression for $π^{+}$. The measured net-proton yields in p+p collisions are compared to PYTHIA and HIJING/B and seem to be better described by the latter.
description: 4 pages, 3 figures, presented at the 19th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions, "Quark Matter 2006", Shanghai, China, November 14-20, 2006. to appear in the proceedings of Quark Matter 2006 as a special issue of Journal of Physics G: Nuclear and Particle Physics
title: Pride and Northgate: Partner report for Darlington Borough Council
Creators: name: Owen, Joseph
name: Marsh, Nicky
name: Howcroft, Michael J
Publisher: name: University of Southampton
Year: 2022

description: The Feeling Towns project, in collaboration with the needs of Darlington Borough Council, explored the meaning of pride in place in the Northgate ward of the town. Research was undertaken across summer 2022, when funders and policymakers were putting more political weight on evaluating pride in place. We spoke with approximately 100 people using a variety of research methods, including interviews, fieldwork, surveys and a facilitated creative workshop.
A quantum bound on the compactness
Creators: name: Casadio, Roberto
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a simple quantum description of the gravitational collapse of a ball of dust which excludes those states whose width is arbitrarily smaller than the gravitational radius of the matter source and supports the conclusion that black holes are macroscopic extended objects. We also comment briefly on the relevance of this result for the ultraviolet self-completion of gravity and the corpuscular picture of black holes.
description: 8 pages, LaTeX, one figure, references and comments added
Κατά πόσο οι συνθήκες αστεγίας οδηγούν τον εξαρτημένο σε θεραπεία
Creators: name: Αλεξόγλου, Αργυρώ Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Αστεγία
Εξάρτηση ναρκωτικών
Ποιοτική Έρευνα
Homelessness
Drug dependence
Qualitative research

description: Η εξάρτηση από νόμιμες ή παράνομες ουσίες είναι ένα φαινόμενο που έχει μελετηθεί από την επιστημονική κοινότητα αρκετές δεκαετίες και συνεχίζει να μελετάται με σκοπό την μείωση, αν όχι την πλήρη εξάλειψη, αυτού του κοινωνικού φαινομένου. Οι επιπτώσεις της εξάρτησης από ναρκωτικές ουσίες στην ζωή των εξαρτημένων είναι πολλές και έχουν εκτενώς αναλυθεί. Η εμπλοκή με τα ναρκωτικά συχνά οδηγούν τους εξαρτημένους να ζουν κάτω από πολύ κακές συνθήκες. Η αστεγία στους εξαρτημένους είναι μια συνθήκη που συναντάται, χωρίς ωστόσο να υπάρχουν επαρκή επιστημονικά ευρήματα που να αποδεικνύουν τα ακριβή ποσοστά των άστεγων-εξαρτημένων στην Ελλάδα, αλλά και ποιες είναι οι επιπτώσεις της αστεγίας στις ζωές των εξαρτημένων. Στην συγκεκριμένη ποιοτική έρευνα γίνεται μια προσπάθεια να μελετηθούν οι απόψεις των άστεγων εξαρτημένων και να κατανοηθεί αν η αστεγία αποτελεί λόγος για να αναζητήσουν βοήθεια σε θεραπευτικά προγράμματα. Η ανάλυση των δεδομένων έγινε την μέθοδο της θεματικής ανάλυσης. Οι συμμετέχοντες εστιάζουν στα προβλήματα που προκαλεί η εξάρτηση. Ακόμη, αναφέρουν αν έχουν πρόσβαση σε υπηρεσίες που μπορούν να τους βοηθήσουν στην κάλυψη των βασικών αναγκών τους. Αναφέρουν από ποια προγράμματα έλαβαν βοήθεια και περιγράφουν τις δυσλειτουργίες των προγραμμάτων. Τέλος, παραθέτουν την γνώμη τους για το πως θα μπορούσαν να εξυπηρετηθούν καλύτερα από τις υπηρεσίες, όντας άστεγοι, αλλά και τι θα τους βοηθούσε, ώστε να μπορέσουν να επανενταχθούν.
description: Dependence on legal or illegal substances is a phenomenon that has been studied by the scientific community for several decades and continues to be studied with the view to the decrease, if not the complete elimination of this social phenomenon. The effects of drug dependence on addicts’ lives are many and have been extensively analyzed. Drug involvement often leads addicts to live under very poor conditions. Homelessness in addicts is a condition that encountered, however, without sufficient scientific findings to prove the precise rates of homeless addicts in Greece, as well as the impact of homelessness on addicts’ lives. This qualitative research attempts to study the views of homeless addicts and to understand whether homelessness is motive to seek help in treatment programs. The data was analyzed with the method of thematic analysis. Participants focus on the problems that addiction causes. They also report whether they have access to services that can help them meet their basic needs. They indicate from which programs they received assistance and report any failure. Finally, they give their opinion on how they could be better helped by the services due to the fact that they are homeless and what would help them to be reintegrated.
description: Σε συνεργασία με: Πανεπιστήμιο Λευκωσίας (Κύπρος)
Carrier Tuning of Stoner Ferromagnetism in ThCr$_{\mathbf{2}}$Si$_{\mathbf{2}}$-Structure Cobalt Arsenides
Creators: name: Ueland, B. G.
name: Pakhira, Santanu
name: Li, Bing
name: Sapkota, A.
name: Sangeetha, N. S.
name: Perring, T. G.
name: Lee, Y.
name: Ke, Liqin
name: Johnston, D. C.
name: McQueeney, R. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: CaCo$_{2-y}$As$_2$ is an unusual itinerant magnet with signatures of extreme magnetic frustration. The conditions for establishing magnetic order in such itinerant frustrated magnets, either by reducing frustration or increasing electronic correlations, is an open question. Here we use results from inelastic neutron scattering and magnetic susceptibility measurements and density functional theory calculations to show that hole doping in Ca(Co$_{1-x}$Fe$_{x}$)$_{2-y}$As$_{2}$ suppresses magnetic order by quenching the magnetic moment while maintaining the same level of magnetic frustration. The suppression is due to tuning the Fermi energy away from a peak in the electronic density of states originating from a flat conduction band. This results in the complete elimination of the magnetic moment by $x\approx0.25$, providing a clear example of a Stoner-type transition.
description: The image plots may render better in acrobat (or another comparable pdf viewer) than in your browser
Correlation of the ghost and the quark in the lattice Landau gauge QCD
Creators: name: Furui, Sadataka
name: Nakajima, Hideo
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Effects of the quark field on the ghost propagator of the lattice Landau gauge are investigated by using the quenched gauge configuration of SU(2) first copy and the parallel tempering (PT) gauge fixed samples, quenched SU(3) $56^4$ configuration and unquenched SU(3) configurations produced by the MILC collaboration. We measure color symmetric and color antisymmetric ghost propagator and the Binder cumulant of $l^1$ norm and $l^2$ norm of color antisymmetric ghost propagator and investigate deviation from that of Gaussian distribution. The dynamical quarks make color antisymmetric ghost propagator closer to Gaussian distribution and Kugo-Ojima color confinement parameter $c$ closer to 1.
description: 7 pages, 6 figures, proceedings of 'IR-QCD in Rio', Rio de Janeiro, June 4-9, 2006
Enhancing medical student success: Implementation & evaluation of an innovative pre-matriculation expert skills program
Creators: name: Nehad El-Sawi
name: Pelley, John
name: Pinney, Brian
name: Weiss, Kathleen
Publisher: name: F1000 Research Limited
Year: 2024

description: In response to the recognition that mere admission qualifications do not guarantee academic success. Des Moines University (DMU) structured a program that prepares incoming students for medical school environment prior to matriculation. This is needed because remediation of learning skill deficiencies during the curriculum has a low probability of success. We are reporting on a new institutionally guided pre-matriculation program that is initiated immediately after the student is accepted and is completed prior to matriculation. By integrating examples from the early curriculum, the program seeks to facilitate a more rapid cognitive and emotional adjustments for students.

DMU implemented the Expert Skills Program (ESP) developed at Texas Tech University to teach students the application of brain-based concepts to learning practices. The metacognitive concepts such as the growth mindset, cortical specialization, and the Kolb experiential learning cycle, create an individualized awareness for each student by showing them how to adapt their learning practices to common methods such as question analysis and concept mapping.
EPE-NAS: Efficient Performance Estimation Without Training for Neural Architecture Search
Creators: name: Lopes, Vasco
name: Alirezazadeh, Saeid
name: Alexandre, Luís A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Neural Architecture Search (NAS) has shown excellent results in designing architectures for computer vision problems. NAS alleviates the need for human-defined settings by automating architecture design and engineering. However, NAS methods tend to be slow, as they require large amounts of GPU computation. This bottleneck is mainly due to the performance estimation strategy, which requires the evaluation of the generated architectures, mainly by training them, to update the sampler method. In this paper, we propose EPE-NAS, an efficient performance estimation strategy, that mitigates the problem of evaluating networks, by scoring untrained networks and creating a correlation with their trained performance. We perform this process by looking at intra and inter-class correlations of an untrained network. We show that EPE-NAS can produce a robust correlation and that by incorporating it into a simple random sampling strategy, we are able to search for competitive networks, without requiring any training, in a matter of seconds using a single GPU. Moreover, EPE-NAS is agnostic to the search method, since it focuses on the evaluation of untrained networks, making it easy to integrate into almost any NAS method.
Grammatical elicitation: Miscellaneous
Creators: name: Palacio, Frank
name: Björklund, Anna
name: Dabkowski, Maksymilian
name: Elias, Alexander
name: López Márquez, Wendy
name: Michael, Lev
name: Montaño Ramírez, Tzintia
name: Robertson, Allegra
name: Robinson, Dakota
name: Wellstood, Zachary
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: cab

description: Includes future perfect and pronominal arguments.
Η Προσωπικότητα του Χασάν Ταχσίν Πασά
Creators: name: Κανσίζογλου, Ευάγγελος Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Βιογραφία
Οθωμανοί Αξιωματούχοι
Ύστερη Οθωμανική Περίοδος
Biography
Ottoman ruling class
Late Ottoman Empire

description: Ο Χασάν Ταχσίν Πασάς, κατά κανόνα απών από τις διεθνείς βιβλιογραφικές αποτυπώσεις των Βαλκανικών Πολέμων (1912-1913), στις εθνικές αφηγήσεις των εμπλεκόμενων μερών παραμένει ένα αμφιλεγόμενο πρόσωπο εξαιτίας της λεγόμενης «αμαχητί» παράδοσης της Θεσσαλονίκης στον ελληνικό στρατό. Η παρούσα εργασία επιχειρεί να προσεγγίσει τον Ταχσίν με την ιδιότητά του ως Οθωμανού αξιωματούχου, μέλους της αυτοκρατορικής ελίτ, εξετάζοντας, παράλληλα, ενδεχόμενες ιδεολογικές συγγένειες και αλληλεπιδράσεις με τις σύγχρονές του αλβανικές - λόγω καταγωγής - εθνικές κινήσεις, αλλά και με τις νεοτουρκικές ομάδες. Σημαντικό τμήμα της εργασίας καταλαμβάνει η αποκατάσταση της πληρέστερης δυνατής βιογραφίας του με βάση το σύνολο των δημοσιευμένων πηγών και συναφών αναφορών στον ελληνόφωνο και αγγλόφωνο χώρο, με την παράθεση των απαραίτητων διευκρινήσεων στις ανακολουθίες και αστοχίες προγενέστερων προσπαθειών.
description: Hasan Tahsin Pasha is rarely mentioned in the international historiography. Only his presence in the First Balkan War (1912-1913) constitutes a subject of study and still concerning exclusively the interested parties: modern Turkey has denounced him, the Bulgarians accuse him of bribery and the Greeks regard him as a “philhellene”. This study concentrates on Tahsin as a member of the late ottoman elite and examines the margins for a sincere interaction with his fellow Albanians in their effort for an independent nation-state as well as with the Young Turks movement. Of course, a comprehensive biography of Tahsin couldn’t be absent. Thanks to this the verification of many mechanisms of the Late Ottoman Empire, mainly in governance, is possible.
Simulation of partial entanglement with nonsignaling resources
Creators: name: Brunner, Nicolas
name: Gisin, Nicolas
name: Popescu, Sandu
name: Scarani, Valerio
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: With the goal of gaining a deeper understanding of quantum non-locality, we decompose quantum correlations into more elementary non-local correlations. We show that the correlations of all pure entangled states of two qubits can be simulated without communication, hence using only non-signaling resources. Our simulation model works in two steps. First, we decompose the quantum correlations into a local and a non-local part. Second, we present a model for simulating the nonlocal part using only non-signaling resources. In our model partially entangled states require more nonlocal resources than maximally entangled states, but the less the state is entangled, the less frequently must the nonlocal resources be used.
description: 6 pages, 2 figures
A portable and flexible implementation of the Wang--Landau algorithm in order to determine the Density of States
Creators: name: Moreno, Felipe
name: Peralta, Joaquín
name: Davis, Sergio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this work we develop an implementation of the Wang--Landau algorithm [Phys. Rev. Lett. \textbf{86}, 2050-2053 (2001)]. This algorithm allows us to find the density of states (DOS), a function that, for a given system, describes the proportion of states that have a certain energy. The implementation uses the Python language for the algorithm itself, and it can take advantage of any library, such as the powerful LAMMPS library, for the computation of energy. Therefore, the resulting implementation is simple and flexible without sacrificing efficiency. This implementation also considers recent developments in the parallelization of the code for faster computation. We establish the soundness and effectiveness of our implementation by studying well-known systems such as the Ising model, the Lennard--Jones and EAM solids. We have found that our implementation can find the DOS with very good precision in a reasonable amount of time. Therefore, we are equipped with a very powerful and flexible implementation that can be easily used in order to study more realistic models of matter.
Imagination and the affirmation of the ordinary : words and deeds in the films of Frank Capra
Creators: name: Bremner, Lori
Publisher: name: University of British Columbia
Year: 2008

description: This study examines four films by Frank Capra, "Mr. Deeds Goes to Town" (1936), "Mr. Smith Goes to Washington" (1939), "Meet John Doe" (1941), and "It's a Wonderful Life" (1946). By discussing these films, the study examines the relation between the good man and community as it appears in the American romantic tradition. Characteristic of this tradition is a strong interest in the relation between the individual experience of the grand dream and the everyday life of the community. This tradition understands the attempt to reconcile grand dreaming with the mundane practices of collective life as leading to both individual happiness and the well being of the community. Given this, our task is to understand how this work is conceived within the narrative structure of these films. By drawing on the writings of Blum, Frye, Emerson, and Rousseau, Chapter One reconstructs a quarrel between imagination ('idealism') and pragmatism ('realism') as it appears in the above named films. The progress of this quarrel serves to underscore the vicissitudes Capra's good man encounters in his attempt to realize the sublime within the ordinary, waking life of the collective. Chapter Two follows the work of Oakeshott, Taylor, Arendt, and Cavell to develop the relationship between the exercise of imagination, community, and the pursuit of happiness as it appears in a detailed reading of "It's a Wonderful Life." Chapter Three gives broad readings to "Mr. Deeds Goes to Town," "Mr. Smith Goes to Washington," and "Meet John Doe" as illustrations of the good man's attempt to locate grand dreaming amid a world of conflicting values, competing claims and irreconcilable images of perfect community.
Entanglement oscillations in open Heisenberg chains
Creators: name: Wang, Ting
name: Wang, Xiaoguang
name: Sun, Zhe
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study pairwise entanglements in spin-half and spin-one Heisenberg chains with an open boundary condition, respectively. We find out that the ground-state and the first-excited-state entanglements are equal for the three-site spin-one chain. When the number of sites L>3, the concurrences and negativities display oscillatory behaviors, and the oscillations of the ground-state and the first-excited-state entanglements are out of phase or in phase.
description: 5 pages, 4 figures
On the co-existence of chemically peculiar Bp stars, slowly pulsating B stars and constant B stars in the same part of the H-R diagram
Creators: name: Briquet, M.
name: Hubrig, S.
name: De Cat, P.
name: Aerts, C.
name: North, P.
name: Scholler, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Aims. In order to better model massive B-type stars, we need to understand the physical processes taking place in slowly pulsating B (SPB) stars, chemically peculiar Bp stars, and non-pulsating normal B stars co-existing in the same part of the H-R diagram. Methods. We carry out a comparative study between samples of confirmed and well-studied SPB stars and a sample of well-studied Bp stars with known periods and magnetic field strengths. We determine their evolutionary state using accurate HIPPARCOS parallaxes and Geneva photometry. We discuss the occurrence and strengths of magnetic fields as well as the occurrence of stellar pulsation among both groups. Further, we make a comparison of Geneva photometric variability for both kinds of stars. Results. The group of Bp stars is significantly younger than the group of SPB stars. Longitudinal magnetic fields in SPB stars are weaker than those of Bp stars, suggesting that the magnetic field strength is an important factor for B type stars to become chemically peculiar. The strongest magnetic fields appear in young Bp stars, indicating a magnetic field decay in stars at advanced ages. Rotation periods of Bp and pulsation periods of SPB stars are of the same order and the behaviour of Geneva photometric variability of some Bp stars cannot be distinguished from the variability of SPB stars, illustrating the difficulty to interpret the observed variability of the order of days for B-type stars. We consider the possibility that pulsation could be responsible for the variability among chemically peculiar stars. In particular, we show that a non-linear pulsation model is not excluded by photometry for the Bp star HD175362.
description: Accepted for publication in Astronomy & Astrophysics on 29/01/2007, 8 pages, 9 figures
Nuclear Fermi Momenta of $^{2}$H, $^{27}$Al and $^{56}$Fe from an Analysis of CLAS data
Creators: name: Liu, Hui
name: Ma, Na-Na
name: Wang, Rong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Nuclear Fermi momentum is a basic property of a nucleus where many nucleons dwell. However, in experiments only the nuclear Fermi momenta of just a few nuclei are measured using quasielastic electron scattering on the nuclear targets so far. Particularly, we still do not know experimentally the Fermi momentum of the lightest nucleon composite -- the deuteron. In this paper, we apply both gaussian distribution and Cauchy distribution to describe the quasielastic peak in the cross section of electron-nucleus scattering. The dip of the cross-section ratio at about $x_{\rm B}=1$ is explained with the nuclear Fermi momentum. By performing the least-square fits to the published CLAS data in the narrow kinematic region of quasielastic scattering, we obtain the nuclear Fermi momenta of $^{2}$H, $^{27}$Al and $^{56}$Fe, which are $116\pm 7$ MeV/c, $232\pm 27$ MeV/c, and $244\pm 28$ MeV/c respectively. The extracted nuclear Fermi momenta are compared to the simple calculations based on Fermi gas model, and the consistencies are found.
description: 7 pages, 5 figures
Logistic map trajectory distributions: Renormalization-group, entropy and criticality at the transition to chaos
Creators: name: Diaz-Ruelas, Alvaro
name: Baldovin, Fulvio
name: Robledo, Alberto
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study the evolution of the probability density of ensembles of iterates of the logistic map that advance towards and finally remain at attractors of representative dynamical regimes. We consider the mirror families of superstable attractors along the period-doubling cascade, and of chaotic-band attractors along the inverse band-splitting cascade. We examine also their common aperiodic accumulation point. The iteration time progress of the densities of trajectories is determined via the action of the Frobenius-Perron (FP) operator. As a difference with the study of individual orbits, the analysis of ensembles of positions offers a viewpoint from which the nonlinear dynamical features of this iconic model can be better characterized in statistical-mechanical terms. The scaling of the densities along the considered families of attractors conforms to a renormalization-group (RG) structure, while their entropies are seen to attain extrema at the fixed points of the RG flows. Additionally, this entropy as a function of the map control parameter displays the characteristic features of an equation of state of a thermal system undergoing a second-order phase transition. We discuss our results.
description: 20 pages, 12 figures, v1
Anomaly Detection in Gravitational Waves data using Convolutional AutoEncoders
Creators: name: Morawski, Filip
name: Bejger, Michał
name: Cuoco, Elena
name: Petre, Luigia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: As of this moment, fifty gravitational waves (GW) detections have been announced, thanks to the observational efforts of the LIGO-Virgo Collaboration, working with the Advanced LIGO and the Advanced Virgo interferometers. The detection of signals is complicated by the noise-dominated nature of the data. Conventional approaches in GW detection procedures require either precise knowledge of the GW waveform in the context of matched filtering searches or coincident analysis of data from multiple detectors. Furthermore, the analysis is prone to contamination by instrumental or environmental artifacts called glitches which either mimic astrophysical signals or reduce the overall quality of data. In this paper, we propose an alternative generic method of studying GW data based on detecting anomalies. The anomalies we study are transient signals, different from the slow non-stationary noise of the detector. Presented in the manuscript anomalies are mostly based on the GW emitted by the mergers of binary black hole systems. However, the presented study of anomalies is not limited only to GW alone, but also includes glitches occurring in the real LIGO/Virgo dataset available at the Gravitational Waves Open Science Center.
description: Accepted to the Machine Learning: Science and Technology; 29 pages, 18 figures
Influence of qubit displacements on quantum logic operations in a silicon-based quantum computer with constant interaction
Creators: name: Kamenev, D. I.
name: Berman, G. P.
name: Tsifrinovich, V. I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The errors caused by qubit displacements from their prescribed locations in an ensemble of spin chains are estimated analytically and calculated numerically for a quantum computer based on phosphorus donors in silicon. We show that it is possible to polarize (initialize) the nuclear spins even with displaced qubits by using Controlled NOT gates between the electron and nuclear spins of the same phosphorus atom. However, a Controlled NOT gate between the displaced electron spins is implemented with large error because of the exponential dependence of exchange interaction constant on the distance between the qubits. If quantum computation is implemented on an ensemble of many spin chains, the errors can be small if the number of chains with displaced qubits is small.
Breaking into jail : women working in a men's jail
Creators: name: Cadwaladr, Margaret I.
Publisher: name: University of British Columbia
Year: 2008

description: The study intends to present a detailed picture of what it is like to be a woman working as a guard in a "men's" jail. In-depth interviews with 21 female guards, 6 managers and 17 women working in jobs usually held by women in a jail (nurses, clerks, librarians) were used to explore the experiences of women in choosing to become jail guards and the consequences of being a woman in the men's world of the jail. Whenever possible, the actual words of the participants are included in the text. The dominant idea which organizes the research is that female guards in a men's jail find themselves in a confusing position. On the one hand, to be female is to be different, to be an outsider. On the other hand, female guards have much in common with, and are sympathetic to, their male peers. This research finds that female guards apply for, and accept, the job for financial reasons. Guards express feelings of frustration with management, boredom and isolation. Female guards see themselves as competent, but having a less aggressive manner of carrying out their duties than some of their male peers. Yet they receive unsolicited and unwanted paternalistic protection which serves to reinforce women's differences and devaluation in the organization. Female guards experience both personal and sexual harassment. These problems are compounded by jail culture, by the comradeship of male and female officers and by the token status of women. Harassment becomes normalized and accepted by both men and women. Three patterns emerge which describe how female guards cope with the challenges and frustrations of their jobs. First, they have much in common with their male peers and are accepted to a greater or lesser degree in the workplace. Second, they tolerate difficulties, including personal and sexual harassment, in part because the benefits of complaining are outweighed by the costs. Finally, some female guards withdraw from the workplace in one way or another: they avoid superfluous contact with fellow-workers, go on stress leave, become apathetic or quit.
Single pixel performance of a 32$\times$32 Ti/Au TES array with broadband X-ray spectra
Creators: name: D'Andrea, Matteo
name: Taralli, Emanuele
name: Akamatsu, Hiroki
name: Gottardi, Luciano
name: Nagayoshi, Kenichiro
name: Ravensberg, Kevin
name: Ridder, Marcel L.
name: Vaccaro, Davide
name: de Vries, Cor P.
name: de Wit, Martin
name: Bruijn, Marcel P.
name: Hoogeveen, Ruud W. M.
name: Gao, Jian-Rong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We are developing a kilo-pixels Ti/Au TES array as a backup option for Athena X-IFU. Here we report on single-pixel performance of a 32$\times$32 array operated in a Frequency Division Multiplexing (FDM) readout system, with bias frequencies in the range 1-5 MHz. We have tested the pixels response at several photon energies, by means of a $^{55}$Fe radioactive source (emitting Mn-K$α$ at 5.9 keV) and a Modulated X-ray Source (MXS, providing Cr-K$α$ at 5.4 keV and Cu-K$α$ at 8.0 keV). First, we report the procedure used to perform the detector energy scale calibration, usually achieving a calibration accuracy better than $\sim$ 0.5 eV in the 5.4 - 8.9 keV energy range. Then, we present the measured energy resolution at the different energies (best single pixel performance: $Δ$E$_{FWHM}$ = 2.40 $\pm$ 0.09 eV @ 5.4 keV; 2.53 $\pm$ 0.10 eV @ 5.9 keV; 2.78 $\pm$ 0.16 eV @ 8.0 keV), investigating also the performance dependency from the pixel bias frequency and the count rate. Thanks to long background measurements ($\sim$ 1 day), we finally detected also the Al-K$α$ line at 1.5 keV, generated by fluorescence inside the experimental setup. We analyzed this line to obtain a first assessment of the single-pixel performance also at low energy ($Δ$E$_{FWHM}$ = 1.91 eV $\pm$ 0.21 eV @ 1.5 keV), and to evaluate the linearity of the detector response in a large energy band (1.5 - 8.9 keV).
description: Accepted for publication in IEEE Transactions on Applied Superconductivity for ASC2020 special issue
Το χιούμορ στα σύγχρονα ελληνικά θεατρικά έργα για παιδιά
Creators: name: Σταμπουλή, Ευανθία Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Θέατρο
Χιούμορ
Θεατρικά έργα
Theater
Humor
Theatrical Show

description: H παρούσα εργασία πραγματεύεται το χιούμορ στα σύγχρονα ελληνικά θεατρικά έργα για παιδιά. Εισαγωγικά γίνεται η αποσαφήνιση του όρου, και παρατίθεται η παιδαγωγική αξία του χιούμορ. Έπειτα παρατίθενται διάφορες θεωρίες σχετικά με το χιούμορ, καθώς και σχετικές έρευνες, που δείχνουν ότι το χιούμορ συνδέεται με την ψυχολογική και φυσική ευεξία του ατόμου. Γίνεται αναφορά στα διάφορα χαρακτηριστικά και τις ποιότητες του χιούμορ, και πραγματοποιείται μελέτη σχετικά με το χιούμορ στο σύγχρονο ελληνικό παιδικό θέατρο. Στο πλαίσιο αυτό γίνεται μία εισαγωγή στα σύγχρονα θεατρικά έργα για παιδιά, και έπειτα μελετώνται θεατρικά έργα της Ξένιας Καλογεροπούλου. Η έρευνα της παρούσας εργασίας βασίστηκε, αφενός, στην άμεση μελέτη των θεατρικών έργων και, αφετέρου, στην μελέτη της αντίστοιχης βιβλιογραφίας, που παρέχει χρήσιμες κριτικές και παρατηρήσεις σχετικά με το χιούμορ στο παιδικό θέατρο. Συμπερασματικά, προέκυψε ότι μέσω του παιδικού θεάτρου έχει βρει γόνιμο πεδίο ανάπτυξης το παιδικό χιούμορ, που βασίζεται μεν και σε έξυπνους διαλόγους, αλλά περισσότερο είναι αποτέλεσμα των σκηνικών, των κοστουμιών, της γκριμάτσας του χοντρού πειράγματος, του απροόπτου, του στραβοπατήματος, και κάθε ενέργειας που τροφοδοτεί τον παιδικό κόσμο με κέφι και διασκέδαση.
description: The present work deals with humor in contemporary Greek children's plays. In the introduction the term is clarified and the pedagogical value of humor is listed. Then there are various theories about humor. Humor is linked to one's psychological and physical well-being and research is provided. Also, reference is made to the various characteristics and qualities of humor. Following is a study of humor in contemporary Greek children's theater. In this context, an introduction is made to contemporary plays for children, and then the works of Xenia Kalogeropoulou are studied. From the theoretical part and the study of modern Greek children's theater, the conclusions of the work are finally drawn.
Entanglement characterization by single-photon counting with random noise
Creators: name: Czerwinski, Artur
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this article, we investigate the problem of entanglement characterization with polarization measurements combined with maximum likelihood estimation (MLE). A realistic scenario is considered with measurement results distorted by random experimental errors. In particular, by imposing unitary rotations acting on the measurement operators, we can test the performance of the tomographic technique versus the amount of noise. Then, dark counts are introduced to explore the efficiency of the framework in a multi-dimensional noise scenario. The concurrence is used as a figure of merit to quantify how well entanglement is preserved through noisy measurements. Quantum fidelity is computed to quantify the accuracy of state reconstruction. The results of numerical simulations are depicted on graphs and discussed.
Dark matter direct detection rate in a generic model with micrOMEGAs2.2
Creators: name: Belanger, G.
name: Boudjema, F.
name: Pukhov, A.
name: Semenov, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a new module of the micrOMEGAs package for the calculation of WIMP-nuclei elastic scattering cross sections relevant for the direct detection of dark matter through its interaction with nuclei in a large detector. With this new module, the computation of the direct detection rate is performed automatically for a generic model of new physics which contains a WIMP candidate. This model needs to be implemented within micrOMEGAs2.1.
description: 38 pages, 3 figures. Change in version number, minor changes in the text, tables updated, note and appendix added
title: Pride and Herefordshire: Partner Report for Rural Media
Creators: name: Owen, Joseph
name: Marsh, Nicky
name: Howcroft, Michael J
Publisher: name: University of Southampton
Year: 2022

description: The Feeling Towns project, in collaboration with Rural Media, explored what pride in place meant to Herefordshire. Research was undertaken across summer 2022 and used a variety of qualitative research methods, including semi-structured interviews and workshops. We focused on what the notion of civic pride means for young people and on understanding the relationship between volunteering and pride in place.
Jets from MRC 0600-399 bent by magnetic fields in the cluster Abell 3376
Creators: name: Chibueze, James O.
name: Sakemi, Haruka
name: Ohmura, Takumi
name: Machida, Mami
name: Akamatsu, Hiroki
name: Akahori, Takuya
name: Nakanishi, Hiroyuki
name: Parekh, Viral
name: van Rooyen, Ruby
name: Takeuchi, Tsutomu T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Galaxy clusters are known to harbour magnetic fields. The nature of the intra-cluster magnetic fields remains an unresolved question. Intra-cluster magnetic field can be observed at the density contact discontinuity formed by cool and dense plasma running into hot ambient plasma, and the discontinuity exists near the 2nd BCG MRC 0600-399 of a merging galaxy cluster Abell 3376 (z=0.0461, hereafter as A3376). Elongated X-ray image in the east-west direction with a comet-like structure reaches a Mpc-scale (Fig1.(a)). Previous radio observations detected the bent jets from MRC 0600-399, moving in same direction as the sub-cluster's motion against ram pressure.Here we report a new radio observation of a radio galaxy MRC 0600-399 which is 3.4 times and 11 times higher resolution and sensitivity than the previous results. Contrary to typical jets, the MRC 0600-399 shows a 90deg bend at the contact discontinuity and the collimated jets further extend over 100 kpc from the bend point. Diffuse, elongated emission named "double-scythe" structures were detected for the first time. The spectral index flattens downstream of the bend point, indicating cosmic-ray re-acceleration. High-resolution numerical simulations reveal that the ordered magnetic field along the discontinuity plays a significant role in the change in the jet direction. The morphology of the "double-scythe" bear remarkable similarities with the simulations, which strengthens our understanding of the interaction between relativistic electrons and intra-cluster magnetic field.
description: 4 figures