cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Reversibility Parameter for a Markovian Stepper
Creators: name: Harada, Takahiro
name: Nakagawa, Naoko
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Recent experimental studies on the stepwize motion of biological molecular motors have revealed that the ``characteristic distance'' of a step is usually less than the actual step size. This observation implies that the detailed-balance condition for kinetic rates of steps is violated in these motors. In this letter, in order to clarify the significance of the characteristic distance, we study a Langevin model of a molecular motor with a hidden degree of freedom. We find that the ratio of the characteristic distance to the step size is equal to unity if the dominant paths in the state space are one dimensional, while it deviates from unity if the dominant paths are branched. Therefore, this parameter can be utilized to determine the reversibility of a motor even under a restricted observation.
description: 6 pages, 2 figures - minor revisions
Πλεόνασμα Προσόντων και Πρόθεση Παραίτησης των Εργαζομένων σε Επιχειρήσεις Υψηλής Τεχνολογίας: Ο Συνδυαστικός Ρυθμιστικός Ρόλος των Ευκαιριών Προαγωγής και του Μελλοντικού Χρονικού Προσανατολισμού
Creators: name: Ξενουδάκη, Αικατερίνη Εμμανουήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Πλεόνασμα Προσόντων
Προαγωγή
Ανησυχία για το Μέλλον
Πρόθεση Παραίτησης
Πληροφορική
Μάνατζερ
Ποσοτική Έρευνα
Overqualification
Promotional Opportunities
Future Consequences of Current Behavior
Turnover Intentions
IT Managers
Quantitative Research

description: Tο πλεόνασμα προσόντων αποτελεί μια μορφή υπο-απασχολήσης όπου οι εργαζόμενοι τείνουν να έχουν περισσότερες δεξιότητες, εμπειρία και γνώσεις από όσες απαιτούνται για την εργασία τους. Χρησιμοποιώντας ως θεωρητικό πλαίσιο την αναντιστοιχία ατόμου- περιβάλλοντος και τη θεωρία της αυτορρύθμισης η παρούσα μελέτη εξέτασε το συνδυαστικό ρυθμιστικό ρόλο ανάμεσα στη πιθανότητα για ύπαρξη προαγωγής και τον μελλοντικό προσανατολισμό στη σχέση ανάμεσα στο πλεόνασμα προσόντων και τη πρόθεση για παραίτηση από την επιχείρηση. Η έρευνα διεξήχθη σε δείγμα 167 Ελλήνων μάνατζερ στο χώρο της Πληροφορικής. Τα αποτελέσματα επιβεβαίωσαν την ισχυρή σχέση ανάμεσα στο πλεόνασμα προσόντων και τη πρόθεση για αποχώρηση. Ως προς τη μελέτη των ρυθμιστικών μεταβλητών φάνηκε ότι στις περιπτώσεις που τα δύο αυτά χαρακτηριστικά του ατόμου και της περίστασης συντονίζονται προς την ίδια κατεύθυνση η πρόθεση για αποχώρηση από την επιχείρηση ως αποτέλεσμα του πλεονάσματος προσόντων εξασθενεί. Πιο συγκεκριμένα φάνηκε ότι τόσο υπό συνθήκες ύπαρξης μελλοντικών προαγωγών με ταυτόχρονη χαμηλή ανησυχία για το μέλλον όσο και σε συνθήκες έλλειψης μελλοντικών προαγωγών με ταυτόχρονη υψηλή ανησυχία για το μέλλον οι εργαζόμενοι διαμορφώνουν πιο ισχυρές προθέσεις παραίτησης από την επιχείρηση
description: Overqualification is a form of underemployment in which individuals tend to be more educated, skilled and experienced as compared to the requirements of their role. Drawing from the person-job fit theory and self-regulation theory we investigated the moderating effect of promotional opportunities and worry about the future outcomes of current behavior upon the relationship of overqualification and turnover intentions. The study conducted by taking a sample of 167 Greek IT managers. The findings confirmed the established relationship between overqualification and turnover intentions. Regarding the moderation effect of promotional opportunities on worry for future consequences of current behavior it seems that when both have the same temporal orientation turnover intentions are mitigated. In other words, in situations where there is a possibility for promotional opportunities with and at the same time low concern for future consequences of current behavior and when there is no possibility for promotional opportunities and high concern for future consequences of current behavior, employees tend to form higher intentions to leave, in response to their perceived overqualification
Coherent Population Trapping of Single Spins in Diamond Under Optical Excitation
Creators: name: Santori, Charles
name: Tamarat, Philippe
name: Neumann, Philipp
name: Wrachtrup, Jorg
name: Fattal, David
name: Beausoleil, Raymond G.
name: Rabeau, James
name: Olivero, Paolo
name: Greentree, Andrew
name: Prawer, Steven
name: Jelezko, Fedor
name: Hemmer, Philip
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Coherent population trapping is demonstrated in single nitrogen-vacancy centers in diamond under optical excitation. For sufficient excitation power, the fluorescence intensity drops almost to the background level when the laser modulation frequency matches the 2.88 GHz splitting of the ground states. The results are well described theoretically by a four-level model, allowing the relative transition strengths to be determined for individual centers. The results show that all-optical control of single spins is possible in diamond.
description: minor corrections
The spectral energy distribution of PKS 2004-447: a compact steep-spectrum source and possible radio-loud narrow-line Seyfert 1 galaxy
Creators: name: Gallo, L. C.
name: Edwards, P. G.
name: Ferrero, E.
name: Kataoka, J.
name: Lewis, D. R.
name: Ellingsen, S. P.
name: Misanovic, Z.
name: Welsh, W. F.
name: Whiting, M.
name: Boller, Th.
name: Brinkmann, W.
name: Greenhill, J.
name: Oshlack, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (abridged) The spectral energy distribution (SED) of the compact steep spectrum (CSS) source and possible radio-loud narrow-line Seyfert 1 galaxy (NLS1), PKS2004-447, is presented. Five out of six well studied RL NLS1 share this dual classification (optically defined as a NLS1 with radio definition of a CSS or giga-hertz peaked spectrum (GPS) source). The SED is created from simultaneous observations at radio (ATCA), optical/NIR (Siding Spring) and UV/X-ray (XMM-Newton) wavelengths. The X-ray data show evidence of short-term variability, a possible soft excess, and negligible absorption. Together with the rest of the SED, the X-ray emission is excessive in comparison to synchrotron plus synchrotron self-Compton (SSC) models. The SED can be described with a two component model consisting of extended synchrotron/SSC emission with Comptonisation in the X-rays, though SSC models with a very high electron-to-magnetic energy density ratio cannot be excluded either. The peak emission in the SED appears to be in the near infrared, which can be attributed to thermal emission from a dusty torus. Analysis of a non-contemporaneous, low resolution optical spectrum suggests that the narrow-line region (NLR) is much more reddened than the X-ray emitting region suggesting that the gas-to-dust ratio in PKS2004-447 may be very different then in our own Galaxy. Long-term radio monitoring of PKS2004-447 shows a rather constant light curve over nearly a six month period with the exception of one outburst when the 6.65GHz flux increased by ~35% over 19 days. In comparison to general samples of GPS sources, which appear to be X-ray weak, NLS1-CSS/GPS sources possess stronger X-ray emission relative to radio, and lower intrinsic absorption than GPS sources of similar X-ray luminosity.
description: 10 pages, 8 figures. Accepted for publication in MNRAS
Experimental and numerical evidence of intensified non-linearity at the micro and nano scale: The lipid coated acoustic bubble
Creators: name: Sojahrood, AJ
name: Haghi, H.
name: Porter, T. M.
name: Karshafian, R.
name: Kolios, M. C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Chaotic Dynamics (nlin.CD)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: A lipid coated bubble (LCB) oscillator is a very interesting non-smooth oscillator with many important applications ranging from industry and chemistry to medicine. However, due to the complex behavior of the coating intermixed with the nonlinear behavior of the bubble itself, the dynamics of the LCB are not well understood. In this work, lipid coated Definity microbubbles (MBs) were sonicated with 25 MHz 30 cycle pulses with pressure amplitudes between 70kPa-300kPa. Here, we report higher order subharmonics in the scattered signals of single MBs at low amplitude high frequency ultrasound excitations. Experimental observations reveal the generation of period 2(P2), P3, and two different P4 oscillations at low excitation amplitude. Despite the reduced damping of the uncoated bubble system, such enhanced nonlinear oscillations has not been observed and can not be theoretically explained for the uncoated bubble. To investigate the mechanism of the enhanced nonlinearity, the bifurcation structure of the lipid coated MBs is studied for a wide range of MBs sizes and shell parameters. Consistent with the experimental results, we show that this unique oscillator can exhibit chaotic oscillations and higher order subharmonics at excitation amplitudes considerably below those predicted by the uncoated oscillator. Buckling or rupture of the shell and the dynamic variation of the shell elasticity causes the intensified non-linearity at low excitations. The simulated scattered pressure by single MBs are in good agreement with the experimental signals.
Sivashinsky equation in a rectangular domain
Creators: name: Denet, Bruno
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Physics (physics.class-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: The (Michelson) Sivashinsky equation of premixed flames is studied in a rectangular domain in two dimensions. A huge number of 2D stationary solutions are trivially obtained by addition of two 1D solutions. With Neumann boundary conditions, it is shown numerically that adding two stable 1D solutions leads to a 2D stable solution. This type of solution is shown to play an important role in the dynamics of the equation with additive noise.
Ανάπτυξη πυριτιδίων του μαγγανίου με χημική εναπόθεση ατμών στερεάς κλίνης και χαρακτηρισμός τους με περίθλαση ακτίνων-Χ
Creators: name: Τεκνετζή, Αικατερίνη Θωμά
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: πυριτίδια μαγγανίου
θερμοηλεκτρισμός
χημική εναπόθεση ατμών στερεάς κλίνης
manganese silicides
thermoelectricity
pack cementation

description: H ολοένα πιο επιτακτική ανάγκη για την παραγωγή ασφαλούς, καθαρής και φθηνής ενέργειας που θα μπορούσε να καλύψει τις παγκόσμιες ανάγκες χωρίς να επιβαρύνει το περιβάλλον, έχει εντείνει τα τελευταία χρόνια το ενδιαφέρον της επιστημονικής κοινότητας για την θερμοηλεκτρική τεχνολογία, η οποία είναι φιλική προς το περιβάλλον και προσφέρει αξιοσημείωτα πλεονεκτήματα. Οι θερμοηλεκτρικές διατάξεις στερεάς κατάστασης, που προσφέρουν την άμεση μετατροπή της θερμικής ενέργειας σε ηλεκτρική και αντίστροφα, χρησιμοποιούνται σε ολοένα και μεγαλύτερο αριθμό εφαρμογών, κυρίως σε εξειδικευμένες εφαρμογές ψύξης, αλλά και σε γεννήτριες παραγωγής ρεύματος. Τα πυριτίτιδα των μεταβατικών μετάλλων, όπως τα Mg2Si, MnSi1.7, β-FeSi2 και CrSi2, θεωρούνται πολλά υποσχόμενα υλικά για θερμοηλεκτρικές εφαρμογές, καθώς παρουσιάζουν ιδιαίτερα καλές θερμοηλεκτρικές ιδιότητες και καλή μηχανική, θερμική και χημική σταθερότητα. Επιπλέον, πρόκειται για υλικά χαμηλού κόστους που είναι μη τοξικά και φιλικά προς το περιβάλλον. Τα «ανώτερα πυριτίδια του μαγγανίου» (Higher Manganese Silicides), MnSix όπου 1.67
description: The ever more imperative need of safe, clean and cheap energy which could meet global energy needs without having an impact on the environment, has recently increased the interest of the scientific community concerning thermoelectric technology, which is environmentally friendly and has significant advantages. Solid state thermoelectric devices, which convert thermal energy into electric, and vice versa, are used in an increasing number of applications, especially in specialized cooling applications, as well as in power generators. Transition-metal silicides such as, Mg2Si, MnSi1.7, β-FeSi2 και CrSi2, are reported as much promising materials for thermoelectric applications, due to their exceptionally good thermoelectric properties and good mechanical, thermal and chemical stability. In addition, they are low cost materials, non-toxic and environmentally friendly. Higher Manganese Silicides, MnSix where 1.67
description: Σε συνεργασία με το Ινστιτούτο Τεχνολογίας Γκρενόμπλ (Γαλλία), το ΕΚΕΦΕ Δημόκριτος, και το CNRS (Centre National de la Researche Scientifique, Γαλλία)
High-fidelity laser-free universal control of two trapped ion qubits
Creators: name: Srinivas, R.
name: Burd, S. C.
name: Knaack, H. M.
name: Sutherland, R. T.
name: Kwiatkowski, A.
name: Glancy, S.
name: Knill, E.
name: Wineland, D. J.
name: Leibfried, D.
name: Wilson, A. C.
name: Allcock, D. T. C.
name: Slichter, D. H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Universal control of multiple qubits -- the ability to entangle qubits and to perform arbitrary individual qubit operations -- is a fundamental resource for quantum computation, simulation, and networking. Here, we implement a new laser-free scheme for universal control of trapped ion qubits based on microwave magnetic fields and radiofrequency magnetic field gradients. We demonstrate high-fidelity entanglement and individual control by creating symmetric and antisymmetric two-qubit maximally entangled states with fidelities in the intervals [0.9983, 1] and [0.9964, 0.9988], respectively, at 68% confidence, corrected for state initialization error. This technique is robust against multiple sources of decoherence, usable with essentially any trapped ion species, and has the potential to perform simultaneous entangling operations on many pairs of ions without increasing control signal power or complexity.
Search for Pulsed VHE Gamma-Ray Emission from Young Pulsars with H.E.S.S
Creators: name: The HESS Collaboration
name: Aharonian, F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of a search for pulsed very-high-energy (VHE) gamma-ray emission from young pulsars using data taken with the H.E.S.S. imaging atmospheric Cherenkov telescope system. Data on eleven pulsars, selected according to their spin-down luminosity relative to distance, are searched for gamma-ray signals with periodicity at the respective pulsar spin period. Special analysis efforts were made to improve the sensitivity in the 100 GeV gamma-ray energy domain in an attempt to reduce the gap between satellite and ground-based gamma-ray instruments. No significant evidence for pulsed emission is found in any data set. Differential upper limits on pulsed energy flux are determined for all selected pulsars in the approximate gamma-ray energy range between 100 GeV and 50 TeV, using different limit determination methods, testing a wide range of possible pulsar light curves and energy spectra. The limits derived here imply that the magnetospheric VHE gamma-ray production efficiency in young pulsars is less than 10^-4 of the pulsar spin-down luminosity, requiring spectral turnovers for the high-energy emission of four established gamma-ray pulsars, and constrain the inverse Compton radiation component predicted by several outer gap models.
description: 13 pages, 11 figures, accepted for publication in A&A
Driven Disordered Periodic Media with an Underlying Structural Phase Transition
Creators: name: Sengupta, Ankush
name: Sengupta, Surajit
name: Menon, Gautam I.
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 investigate the driven states of a two-dimensional crystal whose ground state can be tuned through a square-triangular transition. The depinning of such a system from a quenched random background potential occurs via a complex sequence of dynamical states, which include plastic flow states, hexatics, dynamically stabilized triangle and square phases and intermediate regimes of phase coexistence. These results are relevant to transport experiments in the mixed phase of several superconductors which exhibit such structural transitions as well as to driven colloidal systems whose interactions can be tuned via surface modifications.
description: Two-column, 4 pages, figures included
Lexical and grammatical elicitation: Body parts, animals, nature terms, verbal agreement paradigms
Creators: name: Cheruiyot, Ezra
name: Bossi, Madeline
name: Chebet Bett, Lydia
name: Kipkoech, Linus
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: sgc

description: One .wav file and one .pdf file. Elicitation of lexical items for body parts, animals, and nature terms. Elicitation of verbal agreement paradigms for transitives.
The Northern HIPASS catalogue - Data presentation, completeness and reliability measures
Creators: name: Wong, O. I.
name: Ryan-Weber, E. V.
name: Garcia-Appadoo, D. A.
name: Webster, R. L.
name: Staveley-Smith, L.
name: Zwaan, M. A.
name: Meyer, M. J.
name: Barnes, D. G.
name: Kilborn, V. A.
name: Bhathal, R.
name: de Blok, W. J. G.
name: Disney, M. J.
name: Doyle, M. T.
name: Drinkwater, M. J.
name: Ekers, R. D.
name: Freeman, K. C.
name: Gibson, B. K.
name: Gurovich, S.
name: Harnett, J.
name: Henning, P. A.
name: Jerjen, H.
name: Kesteven, M. J.
name: Knezek, P. M.
name: Koribalski, B. S.
name: Mader, S.
name: Marquarding, M.
name: Minchin, R. F.
name: O'Brien, J.
name: Putman, M. E.
name: Ryder, S. D.
name: Sadler, E. M.
name: Stevens, J.
name: Stewart, I. M.
name: Stootman, F.
name: Waugh, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Northern HIPASS catalogue (NHICAT) is the northern extension of the HIPASS catalogue, HICAT (Meyer et al. 2004). This extension adds the sky area between the declination range of +2 deg < dec. < +25.5 deg to HICAT's declination range of -90 deg < dec. < +2 deg. HIPASS is a blind HI survey using the Parkes Radio Telescope covering 71% of the sky (including this northern extension) and a heliocentric velocity range of -1,280 km/s to 12,700 km/s . The entire Virgo Cluster region has been observed in the Northern HIPASS. The galaxy catalogue, NHICAT, contains 1002 sources with v_hel > 300 km/s . Sources with -300 km/s < v_hel < 300 km/s were excluded to avoid contamination by Galactic emission. In total, the entire HIPASS survey has found 5317 galaxies identified purely by their HI content. The full galaxy catalogue is publicly-available at .
description: 12 pages, accepted for publication by MNRAS
Constraining cosmological parameters from strong lensing with DECIGO and B-DECIGO sources
Creators: name: Hou, Shaoqi
name: Fan, Xi-Long
name: Zhu, Zong-Hong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Gravitational lensing has long been used to measure or constrain cosmology models. Although the lensing effect of gravitational waves has not been observed by LIGO/Virgo, it is expected that there can be a few to a few hundreds lensed events to be detected by the future Japanese space-borne interferometers DECIGO and B-DECIGO, if they are running for 4 years. Given the predicted lensed gravitational wave events, one can estimate the constraints on the cosmological parameters via the lensing statistics and the time delay methods. With the lensing statistics method, the knowledge of the lens redshifts, even with the moderate uncertainty, will set the tight bound on the energy density parameter $Ω_M$ for matter, that is, $0.288\lesssimΩ_M\lesssim0.314$ at best. The constraint on the Hubble constant $H_0$ can be determined using the time delay method. It is found out that at $5σ$, $|δH_0|/H_0$ ranges from $3\%$ to $11\%$ for DECIGO, and B-DECIGO will give less constrained results, $8\%-15\%$. In this work, the uncertainties on the luminosity distance and the time delay distance are set to be $10\%$ and $20\%$, respectively. The improvement on measuring these distances will tighten the bounds.
description: 11 pages, 13 figures. Revised according to Referee's comments
Collision rates of planetesimals near mean-motion resonances
Creators: name: Wallace, Spencer C.
name: Quinn, Thomas. R.
name: Boley, Aaron C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: In circumstellar discs, collisional grinding of planetesimals produces second-generation dust. While it remains unclear whether this ever becomes a major component of the total dust content, the presence of such dust, and potentially the substructure within, it can be used to explore a disc's physical conditions. A perturbing planet produces nonaxisymmetric structures and gaps in the dust, regardless of its origin. The dynamics of planetesimals, however, will be very different than that of small dust grains due to weaker gas interactions. Therefore, planetesimal collisions could create dusty disc structures that would not exist otherwise. In this work, we use N-body simulations to investigate the collision rate profile of planetesimals near mean-motion resonances. We find that a distinct bump or dip feature is produced in the collision profile, the presence of which depends on the libration width of the resonance and the separation between the peri- and apocenter distances of the edges of the resonance. The presence of one of these two features depends on the mass and eccentricity of the planet. Assuming that the radial dust emission traces the planetesimal collision profile, the presence of a bump or dip feature in the dust emission at the 2:1 mean-motion resonance can constrain the orbital properties of the perturbing planet. This assumption is valid, so long as radial drift does not play a significant role during the collisional cascade process. Under this assumption, these features in the dust emission should be marginally observable in nearby protoplanetary disks with ALMA.
description: 17 pages, 12 figures, accepted for publication in MNRAS
Quantum hydrodynamics of the spinor Bose-Einstein condensate at non-zero temperatures
Creators: name: Andreev, Pavel A.
name: Mosaki, I. N.
name: Trukhanova, Mariya Iv.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Finite temperature hydrodynamic model is derived for the spin-1 ultracold bosons by the many-particle quantum hydrodynamic method. It is presented as the two fluid model of the BEC and normal fluid. The linear and quadratic Zeeman effects are included. Scalar and spin-spin like short-range interactions are considered in the first order by the interaction radius. It is also represented as the set of two nonlinear Pauli equations. The spectrum of the bulk collective excitations is considered for the ferromagnetic phase in the small temperature limit. The spin wave is not affected by the presence of the small temperature in the described minimal coupling model, where the thermal part of the spin-current of the normal fluid is neglected. The two sound waves are affected by the spin evolution in the same way as the change of spectrum of the single sound wave in BEC, where speed of sound is proportional to $g_{1}+g_{2}$ with $g_{i}$ are the interaction constants.
description: 12 pages
Static charged fluid around a massive magnetic dipole
Creators: name: Polanco, Jose D.
name: Letelier, Patricio S.
name: Ujevic, Maximiliano
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: An analytical solution of Einstein-Maxwell equations with a static fluid as a source is presented. The spacetime is represented by the axially symmetric Weyl metric and the energy-momentum tensor describes a coupling of a fluid with an electromagnetic field. When appropriate limits are performed we recover the well-known solutions of Gutsunaev-Manko and Schwarzschild. Also, using Eckart's thermodynamics, we calculated the temperature, the mechanical pressure, the charge density and the energy density of the system. The analysis of thermodynamic quantities suggests that the solution can be used to represent a magnetized compact stellar object surrounded by a charged fluid.
description: 7 pages, 1 figure, revtex. A discussion on frame dragging added. Accepted in PRD
When Silence Screams: An Examination of Reporting Behaviors Among Sexual Assault Victims on HBCU Campuses
Creators: name: Robinson, NaTasha
Publisher: name: Old Dominion University Libraries
Year: 2018

description: According to National Sexual Violence Resource Center (2015), 20% to 25% of college women experience a completed or attempted rape victimization during their college career, but less than 5% of college women file a report with law enforcement (Fisher, Cullen, and Turner 2000). Prior literature indicates that student characteristics/background, alcohol use, and affiliation with Greek life influence students’ chances of being sexually assaulted as well as victim decisions to report. Current research on campus sexual assault victimization and students’ decisions to report has neglected Historically Black Colleges and Universities (HBCUs) but seem to show that minorities are less likely to report sexual assaults to police or college officials.
This thesis addresses this gap by examining sexual assault reporting on HBCU campuses.  Examining survey data provided by 382 female victims of attempted/completed forced sexual assault on HBCU campuses (Krebs, et.al., 2011), the relationship between victim participation in Greek and/or sports teams, previous sexual assault victimization prior to college, and Greek membership for the offender and victim reporting behaviors are examined.  Findings and implications are discussed. By examining sexual assault on HBCU campuses, this study may provide a better understanding of the factors that influence a student’s decision to report on an HBCU campus.
First-Order Phase Transition in Potts Models with finite-range interactions
Creators: name: Gobron, Thierry
name: Merola, Immacolata
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider the $Q$-state Potts model on $\mathbb Z^d$, $Q\ge 3$, $d\ge 2$, with Kac ferromagnetic interactions and scaling parameter $\ga$. We prove the existence of a first order phase transition for large but finite potential ranges. More precisely we prove that for $\ga$ small enough there is a value of the temperature at which coexist $Q+1$ Gibbs states. The proof is obtained by a perturbation around mean-field using Pirogov-Sinai theory. The result is valid in particular for $d=2$, Q=3, in contrast with the case of nearest-neighbor interactions for which available results indicate a second order phase transition. Putting both results together provides an example of a system which undergoes a transition from second to first order phase transition by changing only the finite range of the interaction.
description: Soumis pour publication a Journal of statistical physics - version r\'{e}vis\'{e}e
FAIR Training in ELIXIR Europe
Creators: name: Kuzak, Mateusz
name: Castro, Leyla García
name: Batut, Bérénice
name: Arcila, Ricardo
name: Beard, Niall
name: Burke, Melissa
name: Carvalho-Silva, Denise
name: Angel, Victoria Dominguez Del
name: Gurwitz, Kim
name: Kahlem, Pascal
name: Martinez, Paula
name: Morgan, Sarah
name: McQuilton, Peter
name: Palagi, Patricia
name: Psomopoulos, Fotis
name: Rustici, Gabriella
name: Gelder, Celia Van
Publisher: name: Zenodo
Year: 2019
Subjects: FAIR, training, data stewardship, metadata, ontology, bioinformatics

description: ELIXIR is an intergovernmental organization that brings together life science resources across Europe. These resources include databases, software tools, training events and materials, cloud storage, and supercomputers. ELIXIR's activities are divided into the following five areas Data, Tools, Interoperability, Compute and Training known as “platforms”. The ELIXIR Training Platform coordinates training activities, trains life-science researchers, and helps scientists and developers to find the training they need. One of the goals of ELIXIR is to coordinate these resources so that they form a single interconnected infrastructure. This infrastructure makes it easier for scientists to find and share data, exchange expertise, and agree on best practices, such as best practices for developing and sharing training materials.
 The FAIR Training Working Group was first informally formed after the “How to make training FAIR” workshop held at the ELIXIR All Hands Meeting in Berlin in 2018. During the workshop, it became clear that there are two different but interdependent topics (1) availability and findability of training materials about FAIR Data Stewardship, (2) making training resources FAIR. Within the Working Group, two Task Forces have been established, and their activities will be highlighted in this talk.
Percolation theory of self-exciting temporal processes
Creators: name: Notarmuzi, Daniele
name: Castellano, Claudio
name: Flammini, Alessandro
name: Mazzilli, Dario
name: Radicchi, Filippo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We investigate how the properties of inhomogeneous patterns of activity, appearing in many natural and social phenomena, depend on the temporal resolution used to define individual bursts of activity. To this end, we consider time series of microscopic events produced by a self-exciting Hawkes process, and leverage a percolation framework to study the formation of macroscopic bursts of activity as a function of the resolution parameter. We find that the very same process may result in different distributions of avalanche size and duration, which are understood in terms of the competition between the 1D percolation and the branching process universality class. Pure regimes for the individual classes are observed at specific values of the resolution parameter corresponding to the critical points of the percolation diagram. A regime of crossover characterized by a mixture of the two universal behaviors is observed in a wide region of the diagram. The hybrid scaling appears to be a likely outcome for an analysis of the time series based on a reasonably chosen, but not precisely adjusted, value of the resolution parameter.
description: 5 pages , 3 figures + Supplemental Material
Canonical Trajectories and Critical Coupling of the Bose-Hubbard Hamiltonian in a Harmonic Trap
Creators: name: Batrouni, G. G.
name: Krishnamurthy, H. R.
name: Mahmud, K. W.
name: Rousseau, V. G.
name: Scalettar, R. T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Quantum Monte Carlo (QMC) simulations and the Local Density Approximation (LDA) are used to map the constant particle number (canonical) trajectories of the Bose Hubbard Hamiltonian confined in a harmonic trap onto the $(μ/U,t/U)$ phase diagram of the uniform system. Generically, these curves do not intercept the tips of the Mott insulator (MI) lobes of the uniform system. This observation necessitates a clarification of the appropriate comparison between critical couplings obtained in experiments on trapped systems with those obtained in QMC simulations. The density profiles and visibility are also obtained along these trajectories. Density profiles from QMC in the confined case are compared with LDA results.
description: New version of figure 1b
Efficient and responsible use of prior information and joint parameter estimation for estimating parameters of groundwater flow models
Creators: name: Weiss, Richard A.
Publisher: name: University of British Columbia
Year: 2009

description: Parameter estimation problems for groundwater flow systems are often non-identifiable or unstable using only hydraulic head data. Prior information on parameters or joint parameter estimation including tracer concentrations may be used to stabilize the parameter set. Response surfaces and multiparameter confidence regions are used to identify the most efficient and responsible use of prior information and joint data sets for the purpose of parameter estimation. Prior information on some of the parameters are used to stabilize the parameter set for parameter estimation. Efficient use of prior information involves identifying those parameters for which prior information will stabilize the model parameter set the most. Responsible use of prior information involves identifying how errors in the prior information will influence the parameter estimates. The most responsible parameters for prior information are those parameters for which errors in the prior information have the least influence on the final parameter estimates. Guidelines are developed for efficient and responsible use of prior information in parameter estimation based on an analysis of the parameter space using response surfaces and eigenspace decomposition. Joint parameter estimation is used when more than one data set is available to estimate the model parameters. Response surfaces and confidence regions are used to show how multiple data sets reduce parameter uncertainty. The value of future data in reducing the uncertainty of parameter estimates is explored. For weighting data sets in joint parameter estimation, three criteria based on parameter space analysis are proposed. These three criteria are evaluated and compared to the more traditional weighting method based on an analysis of data residuals. A groundwater model for the San Juan Basin, New Mexico, is constructed and calibrated using the methods developed in this thesis. Hydraulic head data, ¹⁴C concentration data, and prior information on the model parameters is used to calibrate the model in an efficient and responsible manner. The model is calibrated in two stages. In the first stage, prior information on the hydraulic conductivity parameters for the lower model layers was found to be both efficient and responsible in stabilizing the parameter set. In the second stage, the parameter estimates and uncertainties based on the four weighting criteria were compared.
An Empirical Method for Evaluating Robustness of Network Centrality Methods: The Case of "Dark Networks"
Creators: name: Shaheen, Joseph
Publisher: name: figshare
Year: 2021
Subjects: subject: 160510 Public Policy
subject: FOS: Political science
subject: 160509 Public Administration
subject: 160206 Private Policing and Security Services
subject: FOS: Law

description: The Intelligence Community faces continuous challenges in the collection and aggregation of human-centric network data, partially due to a lack of availability of said data and tampering by the adversary. Moreover, chronic methodological issues manifest themselves in the applied analytical process post data retrieval; these can be summarized as a deficiency of empirical foundations.This is especially true in the evaluation of node positions commonly captured by centrality measures. In this session, I present a simple bootstrapping method utilizing a scalar measure that provides a strong empirical foundation for determining centrality information loss in collected network data with minimal underlying assumptions. The method's use is illustrated using a theoretical network framework. Strengths, weaknesses, and opportunities are discussed.
Non-Abelian charged nodal links in dielectric photonic crystal
Creators: name: Park, Haedong
name: Wong, Stephan
name: Zhang, Xiao
name: Oh, Sang Soon
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A nodal link is a special form of a line degeneracy (a nodal line) between adjacent bands in the momentum space of a three-dimensional topological crystal. Unlike nodal chains or knots, a nodal link consists of two or more mutually-linked rings that do not touch each other. Recent studies on non-Abelian band topology revealed that the topological charges of the nodal links can have the properties of quaternions. However, a photonic crystal that has a nodal link with non-Abelian charges has not been reported. Here, we propose dielectric photonic crystals in forms of double diamond structures which realize the nodal links in the momentum space. By examining the evolution of the eigenstate correlations along the closed loops which enclose the nodal line(s) of the links, their non-Abelian topological charges are also analyzed. The proposed design scheme and theoretical approach in this work will allow for experimental observation of photonic non-Abelian charges in purely dielectric materials and facilitate the control of the degeneracy in complex photonic structures.
description: 35 pages, 12 figures
On the microscopic theory of the exciton ring fragmentation
Creators: name: Paraskevov, A. V.
name: Khabarova, T. V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The description is presented for the dependence of the indirect exciton condensate density at the ring as a function of the polar angle at zero temperature with the involvement of the processes of formation and recombination of the excitons. In particular, starting from the quasi one-dimensional Gross-Pitaevskii equation with a spatially uniform generating term, we derive an exact analytical solution yielding the fragmentation of an exciton ring which is probably observed in the experiments.
description: 4 pages, 1 figure. The preprint has been brought into accord with the journal's variant
Fermat's principle of least time in the presence of uniformly moving boundaries and media
Creators: name: Gjurchinovski, Aleksandar
name: Skeparovski, Aleksandar
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The refraction of a light ray by a homogeneous, isotropic and non-dispersive transparent material half-space in uniform rectilinear motion is investigated theoretically. The approach is an amalgamation of the original Fermat's principle and the fact that an isotropic optical medium at rest becomes optically anisotropic in a frame where the medium is moving at a constant velocity. Two cases of motion are considered: a) the material half-space is moving parallel to the interface; b) the material half-space is moving perpendicular to the interface. In each case, a detailed analysis of the obtained refraction formula is provided, and in the latter case, an intriguing backward refraction of light is noticed and thoroughly discussed. The results confirm the validity of Fermat's principle when the optical media and the boundaries between them are moving at relativistic speeds.
description: 11 pages, 6 figures, RevTeX 4, comments welcome; V2: revised, Fig. 7 added; V3: several typos corrected, accepted for publication in European Journal of Physics (online at: http://stacks.iop.org/EJP/28/933)
Self-assembly of biomolecular condensates with shared components
Creators: name: Jacobs, William M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Biomolecular condensates self-assemble when proteins and nucleic acids spontaneously demix to form droplets within the crowded intracellular milieu. This simple mechanism underlies the formation of a wide variety of membraneless compartments in living cells. To understand how multiple condensates with distinct compositions can self-assemble in such a heterogeneous system, we study a minimal model in which we can "program" the pairwise interactions among hundreds of species. We show that the number of distinct condensates that can be reliably assembled grows superlinearly with the number of species in the mixture when the condensates are allowed to share components. Furthermore, we show that we can predict the maximum number of distinct condensates in a mixture without knowing the details of the pairwise interactions. Simulations of condensate growth confirm these predictions and suggest that the physical rules governing the achievable complexity of condensate-mediated spatial organization are broadly applicable to biomolecular mixtures.
Majorana neutrino textures from numerical considerations: the CP conserving case
Creators: name: Dziewit, B.
name: Kajda, K.
name: Gluza, J.
name: Zralek, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Phenomenological bounds on the neutrino mixing matrix U are used to determine numerically the allowed range of real elements (CP conserving case) for the symmetric neutrino mass matrix Mn (Majorana case). For this purpose an adaptive Monte Carlo generator has been used. Histograms are constructed to show which forms of the neutrino mass matrix Mn are possible and preferred. We confirm results found in the literature which are based on analytical calculations, though a few differences appear. These cases correspond to some textures with two zeros. The results show that actually both normal and inverted mass hierarchies are still possible at 3 sigma confidence level.
description: 12 pages, 10 figures, changes in Section 2, some references added, to appear in PRD
TeethTap: Recognizing Discrete Teeth Gestures Using Motion and Acoustic Sensing on an Earpiece
Creators: name: Sun, Wei
name: Li, Franklin Mingzhe
name: Steeper, Benjamin
name: Xu, Songlin
name: Tian, Feng
name: Zhang, Cheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Teeth gestures become an alternative input modality for different situations and accessibility purposes. In this paper, we present TeethTap, a novel eyes-free and hands-free input technique, which can recognize up to 13 discrete teeth tapping gestures. TeethTap adopts a wearable 3D printed earpiece with an IMU sensor and a contact microphone behind both ears, which works in tandem to detect jaw movement and sound data, respectively. TeethTap uses a support vector machine to classify gestures from noise by fusing acoustic and motion data, and implements K-Nearest-Neighbor (KNN) with a Dynamic Time Warping (DTW) distance measurement using motion data for gesture classification. A user study with 11 participants demonstrated that TeethTap could recognize 13 gestures with a real-time classification accuracy of 90.9% in a laboratory environment. We further uncovered the accuracy differences on different teeth gestures when having sensors on single vs. both sides. Moreover, we explored the activation gesture under real-world environments, including eating, speaking, walking and jumping. Based on our findings, we further discussed potential applications and practical challenges of integrating TeethTap into future devices.
description: 26th International Conference on Intelligent User Interfaces (IUI '21), April 14--17, 2021, College Station, TX, USA
Transverse-Momentum Dependent Factorization for gamma^* pi^0 to gamma
Creators: name: Ma, J. P.
name: Wang, Q.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: With a consistent definition of transverse-momentum dependent (TMD) light-cone wave function, we show that the amplitude for the process $γ^* π^0 \toγ$ can be factorized when the virtuality of the initial photon is large. In contrast to the collinear factorization in which the amplitude is factorized as a convolution of the standard light-cone wave function and a hard part, the TMD factorization yields a convolution of a TMD light-cone wave function, a soft factor and a hard part. We explicitly show that the TMD factorization holds at one loop level. It is expected that the factorization holds beyond one-loop level because the cancelation of soft divergences is on a diagram-by-diagram basis. We also show that the TMD factorization helps to resum large logarithms of type $\ln^2x$.
description: Published version in Phys.Rev.D75:014014,2007
Matthew D. Pollard Dissertation: Chapter 3 Appendix: Supplementary Tables
Creators: name: Pollard, Matthew
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 310509
subject: Genomics

description: Dissertation Author: Matthew D. PollardDissertation Title: MAMMALIAN TRAIT EVOLUTION: MACROEVOLUTIONARY AND COMPARATIVE GENOMIC ANALYSES OF DIET AND URSID-SPECIFIC ADAPTATIONSChapter 3: The BeAR necessities: accelerated genomic regions associated with the evolution of UrsidaeData: Supplementary Tables S1-S9
Complex network modelling of EEG band coupling in dyslexia: an exploratory analysis of auditory processing and diagnosis
Creators: name: Gallego-Molina, Nicolás J.
name: Ortiz, Andrés
name: Martínez-Murcia, Francisco J.
name: Formoso, Marco
name: Giménez, Almudena
Publisher: name: arXiv
Year: 2021
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: Complex network analysis has an increasing relevance in the study of neurological disorders, enhancing the knowledge of brain's structural and functional organization. Network structure and efficiency reveal different brain states along with different ways of processing the information. This work is structured around the exploratory analysis of the brain processes involved in low-level auditory processing. A complex network analysis was performed on the basis of brain coupling obtained from Electroencephalography (EEG) data, while different auditory stimuli were presented to the subjects. This coupling is inferred from the Phase-Amplitude coupling (PAC) from different EEG electrodes to explore differences between controls and dyslexic subjects. Coupling data allows the construction of a graph, and then, graph theory is used to study the characteristics of the complex networks throughout time for controls and dyslexics. This results in a set of metrics including clustering coefficient, path length and small-worldness. From this, different characteristics linked to the temporal evolution of networks and coupling are pointed out for dyslexics. Our study revealed patterns related to Dyslexia as losing the small-world topology. Finally, these graph-based features are used to classify between controls and dyslexic subjects by means of a Support Vector Machine (SVM).
Verification of the Rayleigh Scattering Cross Section
Creators: name: Chakraborti, Sayan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Physics Education (physics.ed-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: A simple experiment is described for the direct determination of the wavelength dependence of the Rayleigh scattering cross section using the classical example of the blue sky.
description: 3 pages, 2 figures, submitted to AJP