cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Dynamical Mass Estimates for Incomplete Orbits: Young Multiple Stars in Taurus and Ophiuchus
Creators: name: Schaefer, G. H.
name: Simon, M.
name: Beck, T. L.
name: Nelan, E.
name: Prato, L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present recent measurements of the orbital motion in the binaries, DF Tau and ZZ Tau, and in the triples, Elias 12, T Tau, and V853 Oph. We observed these systems with the Fine Guidance Sensors on the Hubble Space Telescope and with adaptive optics imaging at the W. M. Keck and Gemini North Observatories. Based on our measurements and those presented in the literature, we perform preliminary orbital analyses for DF Tau, ZZ Tau, Elias 12 Na-Nb, and T Tau Sa-Sb. Because the orbital coverage in most of these systems does not yet span a sufficient portion of the orbit, we are not able to find definitive orbit solutions. By using a Monte Carlo search technique, we explored the orbital parameter space allowed by the current set of data available for each binary. We constructed weighted distributions for the total mass of the binaries derived from a large sample of possible orbits that fit the data. These mass distributions show that the total mass is already well-defined. We compute total mass estimates of 0.78 (+0.25/-0.15) Msun, 0.66 (+0.15/-0.11) Msun, 1.13 (+0.36/-0.09) Msun, and 4.13 (+1.58/-0.97) Msun for DF Tau, ZZ Tau, Elias 12 Na-Nb, and T Tau Sa-Sb respectively, using a distance of 140 pc. For Elias 12 Na-Nb, where the orbital coverage spans ~ 164 deg, we compute a preliminary orbit solution with a period of ~ 9-12 years. By including an earlier lunar occultation measurement, we also find a likely orbit solution for ZZ Tau, with a period of ~ 32 years. With additional measurements to continue mapping the orbits, the derived dynamical masses will be useful in constraining the theoretical tracks of pre-main sequence evolution.
description: 55 pages including 10 tables and 17 figures; accepted for publication in AJ
Results of the ROTOR-program. I. The long-term photometric variability of classical T Tauri stars
Creators: name: Grankin, K. N.
name: Melnikov, S. Yu.
name: Bouvier, J.
name: Herbst, W.
name: Shevchenko, V. S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a unique, homogeneous database of photometric measurements for Classical T Tauri stars extending up to 20 years. The database contains more than 21,000 UBVR observations of 72 CTTs. All the data were collected within the framework of the ROTOR-program at Mount Maidanak Observatory (Uzbekistan) and together they constitute the longest homogeneous, accurate record of TTS variability ever assembled. We characterize the long term photometric variations of 49 CTTs with sufficient data to allow a robust statistical analysis and propose an empirical classification scheme. Several patterns of long term photometric variability are identified. The most common pattern, exhibited by a group of 15 stars which includes T Tau itself, consists of low level variability (Delta(V)<=0.4mag) with no significant changes occurring from season to season over many years. A related subgroup of 22 stars exhibits a similar stable long term variability pattern, though with larger amplitudes (up to Delta(V)~1.6 mag). Besides these representative groups, we identify three smaller groups of 3-5 stars each which have distinctive photometric properties. The long term variability of most CTTs is fairly stable and merely reflects shorter term variability due to cold and hot surface spots. Only a small fraction of CTTs undergo significant brightness changes on the long term (months, years), which probably arise from slowly varying circumstellar extinction.
description: 16 pages, 11 figures. Astron. Astrophys., in press
Strafgefangene und Verwahrte in den Justizvollzugsanstalten Thüringens am 31.3.2011
Creators: name: (:Unkn) Unknown
Publisher: name: Universität Tübingen
Year: 2011
Subjects: subject: Strafvollzug , Thüringen , Statistik
subject: 360

description: Die Strafvollzugsstatistik erfasst die Gefangenen und Verwahrten in den Justizvollzugsanstalten auf der Grundlage ihres so genannten Buchwerkes, getrennt für Männer und Frauen sowie im offenen und geschlossenen Vollzug einschließlich Jugendstrafvollzug. Thüringen verfügt zur Zeit über insgesamt fünf Justizvollzugsanstalten sowie eine Jugendstrafanstalt und eine Jugendarrestanstalt. Außerdem besteht bei vier Justizvollzugsanstalten und der Jugendstrafanstalt eine Abteilung des offenen Vollzugs. Ab 1995 werden die weiblichen Gefangenen auf der Grundlage einer Vereinbarung zwischen den Freistaaten Sachsen und Thüringen zum Vollzug der Freiheitsstrafe vorwiegend nach Sachsen verlegt. Rechtsgrundlage der Strafvollzugsstatistik sind die Nummern 56 Abs. 1-3 und 57 der Vollzugsgeschäftsordnung (VGO). Zum Stichtag 31. März eines jeden Jahres werden Strukturdaten nach verschiedenen demographischen und kriminologischen Aspekten aller wegen Verbüßung einer Freiheitsstrafe (einschließlich Ersatzfreiheitsstrafe) oder Jugendstrafe einsitzenden Gefangenen erfasst. Erste Veröffentlichungen dazu erfolgten im Februar 1995 für die Berichtsjahre 1991 bis 1994. Im vorliegenden Bericht werden diese Ergebnisse für das Jahr 2011 dokumentiert. Weitere Veröffentlichungen erscheinen im September eines jeden Jahres. Alle im Laufe eines Jahres eingewiesenen und entlassenen Personen (Gefangenenbewegung) werden in einem gesonderten Statistischen Bericht jeweils im Februar eines jeden Jahres veröffentlicht.
Wavelength-Shifting Performance of Polyethylene Naphthalate Films in a Liquid Argon Environment
Creators: name: Abraham, Y.
name: Asaadi, J.
name: Basque, V.
name: Castiglioni, W.
name: Dorrill, R.
name: Febbraro, M.
name: Hackett, B.
name: Kelsey, J.
name: Littlejohn, B. R.
name: Parmaksiz, I.
name: Rooks, M.
name: Szelc, A. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Liquid argon is commonly used as a detector medium for neutrino physics and dark matter experiments in part due to its copious scintillation light production in response to its excitation and ionization by charged particle interactions. As argon scintillation appears in the vacuum ultraviolet (VUV) regime and is difficult to detect, wavelength-shifting materials are typically used to convert VUV light to visible wavelengths more easily detectable by conventional means. In this work, we examine the wavelength-shifting and optical properties of poly(ethylene naphthalate) (PEN), a recently proposed alternative to tetraphenyl butadiene (TPB), the most widely-used wavelength-shifter in argon-based experiments. In a custom cryostat system with well-demonstrated geometric and response stability, we use 128~nm argon scintillation light to examine various PEN-including reflective samples' light-producing capabilities, and study the stability of PEN when immersed in liquid argon. The best-performing PEN-including test reflector was found to produce 34% as much visible light as a TPB-including reference sample, with widely varying levels of light production between different PEN-including test reflectors. Plausible origins for these variations, including differences in optical properties and molecular orientation, are then identified using additional measurements. Unlike TPB-coated samples, PEN-coated samples did not produce long-timescale light collection increases associated with solvation or suspension of wavelength-shifting material in bulk liquid argon.
description: 21 pages, 9 figures. Minor edits as suggested by reviewers. Replaced most usages of inches with SI units. Fix a typo in the legend on Figure 9. Other minor revisions
Faint Thermonuclear Supernovae from AM Canum Venaticorum Binaries
Creators: name: Bildsten, Lars
name: Shen, Ken J.
name: Weinberg, Nevin N.
name: Nelemans, Gijs
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Helium that accretes onto a Carbon/Oxygen white dwarf in the double white dwarf AM Canum Venaticorum (AM CVn) binaries undergoes unstable thermonuclear flashes when the orbital period is in the 3.5-25 minute range. At the shortest orbital periods (and highest accretion rates, Mdot > 10^-7 Msol/yr), the flashes are weak and likely lead to the Helium equivalent of classical nova outbursts. However, as the orbit widens and Mdot drops, the mass required for the unstable ignition increases, leading to progressively more violent flashes up to a final flash with Helium shell mass ~ 0.02-0.1 Msol. The high pressures of these last flashes allow the burning to produce the radioactive elements 48Cr, 52Fe, and 56Ni that power a faint (M_V in the range of -15 to -18) and rapidly rising (few days) thermonuclear supernova. Current galactic AM CVn space densities imply one such explosion every 5,000-15,000 years in 10^11 Msol of old stars (~ 2-6% of the Type Ia rate in E/SO galaxies). These ".Ia" supernovae (one-tenth as bright for one-tenth the time as a Type Ia supernovae) are excellent targets for deep (e.g. V=24) searches with nightly cadences, potentially yielding an all-sky rate of 1,000 per year.
description: To appear in The Astrophysical Journal Letters; 4 pages, 3 figures. Expected rates somewhat reduced due to lowered galactic density of AM CVn binaries
Vapor-liquid equilibrium of water with the MB-pol many-body potential
Creators: name: Muniz, Maria Carolina
name: Gartner, Thomas E.
name: Riera, Marc
name: Knight, Christopher
name: Yue, Shuwen
name: Paesani, Francesco
name: Panagiotopoulos, Athanassios Z.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Among the many existing molecular models of water, the MB-pol many-body potential has emerged as a remarkably accurate model, capable of reproducing thermodynamic, structural, and dynamic properties across water's solid, liquid, and vapor phases. In this work, we assessed the performance of MB-pol with respect to an important set of properties related to vapor-liquid coexistence and interfacial behavior. Through direct coexistence classical molecular dynamics simulations at temperatures 400 K < T < 600 K, we calculated properties such as equilibrium coexistence densities, vapor-liquid interfacial tension, vapor pressure, and enthalpy of vaporization, and compared the MB-pol results to experimental data. We also compared rigid vs. fully flexible variants of the MB-pol model and evaluated system size effects for the properties studied. We found that the MB-pol model predictions are in good agreement with experimental data, even for temperatures approaching the vapor-liquid critical point; this agreement was largely insensitive to system size or the rigid vs. flexible treatment of the intramolecular degrees of freedom. These results attest to the chemical accuracy of MB-pol and its high degree of transferability, thus enabling MB-pol's application across a large swath of water's phase diagram.
Strafgefangene und Verwahrte in den Justizvollzugsanstalten Thüringens am 31.3.2018
Creators: name: (:Unkn) Unknown
Publisher: name: Universität Tübingen
Year: 2018
Subjects: subject: Strafvollzug , Thüringen , Statistik
subject: 360

description: Die Strafvollzugsstatistik erfasst die Gefangenen und Verwahrten in den Justizvollzugsanstalten auf der Grundlage ihres so genannten Buchwerkes, getrennt für Männer und Frauen sowie im offenen und geschlossenen Vollzug einschließlich Jugendstrafvollzug. Thüringen verfügte zum Stichtag 31.3.2018 über vier Justizvollzugsanstalten und eine Jugendstrafanstalt. Alle Anstalten verfügten über die Möglichkeit des offenen Vollzugs. Seit 1995 werden die weiblichen Gefangenen auf der Grundlage einer Vereinbarung zwischen den Freistaaten Sachsen und Thüringen zum Vollzug der Freiheitsstrafe vorwiegend nach Sachsen verlegt. Die männlichen Sicherungsverwahrten werden nach einem Staatsvertrag mit dem Land Hessen in einer hessischen Justizvollzugsanstalt untergebracht. Nur in Ausnahmefällen gibt es noch vereinzelt Sicherungsverwahrte in den Thüringer Justizvollzugsanstalten. Rechtsgrundlage der Strafvollzugsstatistik sind die Nummern 56 Abs. 1-3 und 57 der Vollzugsgeschäftsordnung (VGO). Zum Stichtag 31. März eines jeden Jahres werden Strukturdaten nach verschiedenen demographischen und kriminologischen Aspekten aller wegen Verbüßung einer Freiheitsstrafe (einschließlich Ersatzfreiheitsstrafe) oder Jugendstrafe einsitzenden Gefangenen erfasst. Erste Veröffentlichungen dazu erfolgten im Februar 1995 für die Berichtsjahre 1991 bis 1994. Seitdem erscheint jährlich ein Statistischer Bericht über die Stichtagserhebung zum 31. März.
Inversion of three-dimensional direct current resistivity data
Creators: name: Li, Yaoguo
Publisher: name: University of British Columbia
Year: 2008

description: A direct current (d.c.) resistivity experiment investigates subsurface geo-electrical structures by measuring the electric field set up by introducing current into the earth. Information about geo-electrical structures is extracted by inverting the observed data to generate an image of the conductivity or to construct a conductivity model. The goal of this thesis is to develop efficient inversion techniques for the interpretation of three-dimensional (3d) d.c. resistivity data. The study assumes data consisting of pole-pole potentials measured over a regular grid on the surface for many current locations. The Born approximation is employed to linearize the inverse problem. The source of the electric field measured in the d.c. resistivity is the accumulated electric charges. Different aspects of the charge accumulation are reviewed, enlarged with new insights and presented in a unified notation. This provides the basis for understanding the fundamentals of d.c. resistivity experiments. Two algorithms are developed to image simple 2d conductivities. The first constructs a structural image by combining the charge density images obtained by inverting multiple sets of common current potentials. The second constructs a conductivity image directly. Processing and displaying the apparent conductivity, and constructing equivalent sources from secondary potentials are studied as the means of imaging. Assuming a multiplicative perturbation to a uniform half-space, the potential anomaly of pole-pole arrays is expressed as a depth integral of the logarithmic perturbation convolved with a kernel function in the horizontal directions. Applying the Fourier transform decomposes the data equation for a 3d problem into a set of id equations. A rapid approximate 3d inversion is developed based upon this decomposition by solving a sequence of id inversions in the wavenumber domain. The approximate 3d inversion is used to construct iterative inversion algorithms using the AIM (Approximate Inverse Mapping) formalism. The approximate inversion and an exact forward mapping are used to update the model successively so that the final result reproduces the observed data. The AIM inversion is applied to analyse a set of field data.
Application of motor learning in neurorehabilitation: a framework for health-care professionals
Creators: name: Kleynen, Melanie
name: Beurskens, Anna J
name: Olijve, Huub
name: Kamphuis, Jip
name: Braun, Susy
Publisher: name: Zuyd University of Applied Sciences
Year: 2021
Subjects: subject: Health Care
subject: 110603 Motor Control
subject: FOS: Health sciences
subject: 110317 Physiotherapy
subject: FOS: Clinical medicine
subject: 110321 Rehabilitation and Therapy (excl. Physiotherapy)

description: Learning motor skills is an essential part of most rehabilitation processes. Facilitating and supporting motor learning is particularly challenging in neurological rehabilitation: patients who suffer from neurological diseases experience both physical limitations and difficulties of cognition and communication that affect and/or complicate the motor learning process. Therapists (e.g. physiotherapists and occupational therapists) who work in neurorehabilitation are therefore continuously searching for the best way to facilitate patients during these intensive learning processes. To support therapists in the application of motor learning, a framework was developed, integrating knowledge from the literature and the opinions and experiences of international experts. This article presents the framework, illustrated by cases from daily practice. The framework may assist therapists working in neurorehabilitation in making choices, implementing motor learning in routine practice, and supporting communication of knowledge and experiences about motor learning with colleagues and students. The article discusses the framework and offers suggestions and conditions given for its use in daily practice.
Υπερηχογραφική απεικόνιση του μασητήρα μυ και συσχέτιση με ηλεκτρομυογραφική καταγραφή της δραστηριότητας του
Creators: name: Γεωργιακάκη, Ιωάννα Α.
Publisher: name: Aristotle University of Thessaloniki
Year: 2003
Subjects: Μασητήρας μυς
Ηλεκτρομυογραφία
Υπερηχογράφημα
Πάχος μασητήρα μυ
Λειτουργία μασητηρίων μυών
Κρανιογναθικές διαταραχές
Masseter muscle
Electromyography
Ultrasonography
Masseter muscle thickness
Masticatory muscle function
Craniomandibular disorders

description: Ο ρόλος των μασητήριων μυών
description: The significance of masticatory muscle function with regard
Global exponential stability of classical solutions to the hydrodynamic model for semiconductors
Creators: name: Fang, Daoyuan
name: Xu, Jiang
name: Zhang, Ting
Publisher: name: arXiv
Year: 2007
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35L65, 76X05, 35M10

description: In this paper, the global well-posedness and stability of classical solutions to the multidimensional hydrodynamic model for semiconductors on the framework of Besov space are considered. We weaken the regularity requirement of the initial data, and improve some known results in Sobolev space. The local existence of classical solutions to the Cauchy problem is obtained by the regularized means and compactness argument. Using the high- and low- frequency decomposition method, we prove the global exponential stability of classical solutions (close to equilibrium). Furthermore, it is also shown that the vorticity decays to zero exponentially in the 2D and 3D space. The main analytic tools are the Littlewood-Paley decomposition and Bony's para-product formula.
description: 18 pages
Why Asymmetric Molecular Coupling to Electrodes Cannot Be at Work in Real Molecular Rectifiers
Creators: name: Baldea, Ioan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Every now and then one can hear in the molecular electronics community that asymmetric couplings ($Γ_{s} \neq Γ_{t}$) of the dominant level (molecular orbital) to electrodes ($s$ and $t$) which typically have shapes different of each other may be responsible for current rectification observed in experiments. Using a general single level model going beyond the Lorentzian transmission limit, in this work we present a rigorous demonstration that this is not the case. In particular, we deduce an analytical for the bias ($V$) driven shift of the level energy $δ\varepsilon_{0}(V)$ showing that $δ\varepsilon_{0}(V)/V$ scales as $Γ_t/W_t - Γ_s/W_s$, which is merely a tiny quantity because the electrode bandwidths $W_{s,t}$ are much larger than $Γ_{s,t}$. This result invalidates a previous, never-deduced formula in use in some previous publications that neither could be justified theoretically nor is supported by experiment. To the latter aim, we present new experimental evidence adding to that already inferred in earlier analysis.
description: accepted for publication in Phys. Rev. B
Strafgefangene und Verwahrte in den Justizvollzugsanstalten Thüringens am 31.3.2014
Creators: name: (:Unkn) Unknown
Publisher: name: Universität Tübingen
Year: 2014
Subjects: subject: Strafvollzug , Thüringen , Statistik
subject: 360

description: Die Strafvollzugsstatistik erfasst die Gefangenen und Verwahrten in den Justizvollzugsanstalten auf der Grundlage ihres so genannten Buchwerkes, getrennt für Männer und Frauen sowie im offenen und geschlossenen Vollzug einschließlich Jugendstrafvollzug. Thüringen verfügt zur Zeit über insgesamt fünf Justizvollzugsanstalten sowie eine Jugendstrafanstalt und eine Jugendarrestanstalt. Außerdem besteht bei vier Justizvollzugsanstalten und der Jugendstrafanstalt eine Abteilung des offenen Vollzugs. Ab 1995 werden die weiblichen Gefangenen auf der Grundlage einer Vereinbarung zwischen den Freistaaten Sachsen und Thüringen zum Vollzug der Freiheitsstrafe vorwiegend nach Sachsen verlegt. Rechtsgrundlage der Strafvollzugsstatistik sind die Nummern 56 Abs. 1-3 und 57 der Vollzugsgeschäftsordnung (VGO). Zum Stichtag 31. März eines jeden Jahres werden Strukturdaten nach verschiedenen demographischen und kriminologischen Aspekten aller wegen Verbüßung einer Freiheitsstrafe (einschließlich Ersatzfreiheitsstrafe) oder Jugendstrafe einsitzenden Gefangenen erfasst. Erste Veröffentlichungen dazu erfolgten im Februar 1995 für die Berichtsjahre 1991 bis 1994. Seitdem erscheint jährlich ein statistischer Bericht über die Stichtagserhebung zum 31. März. Alle im Laufe eines Jahres eingewiesenen und entlassenen Personen (Gefangenenbewegung) werden in einem gesonderten Statistischen Bericht jeweils Anfang eines jeden Jahres veröffentlicht.
Ignore that! : Does highlighting a misleading cue improve recall memory for climate change science?
Creators: name: Harrington, Tara
Publisher: name: University of Tasmania
Year: 2024

description: Effectively communicating climate science is critical to garnering support for climate action. There can be many challenges to communicating scientific information. For example, information that is complex or conveys risk can be difficult to absorb. Expanding on previous research, we aimed to test how manipulation of cue salience effected recall memory, metacognition, and climate opinion. Participants (N = 159) were randomly allocated to read a summary relating to either a highlighted-cue, priming, or control condition before reading climate change facts. Following a retention interval participants completed a test of recall memory and answered questions related to opinions (belief, risk perception, policy support) about climate change as well as political affiliation. It was hypothesised that participants in the highlighted-cue condition would score higher on the memory and metacognition variables compared to the other conditions, and participants in the highlighted-cue and priming conditions would score higher on opinion variables than controls. A series of moderation analyses (with political affiliation as the moderator) were used to test the hypotheses. A significant difference between conditions was found for the variable of belief, but not in the hypothesised direction. None of the hypotheses were therefore supported by the data. Limitations, and future directions are discussed.
Mysterious, Variable, and Extremely Hot: White Dwarfs Showing Ultra-High Excitation Lines I. Photometric Variability
Creators: name: Reindl, Nicole
name: Schaffenroth, Veronika
name: Filiz, Semih
name: Geier, Stephan
name: Pelisoli, Ingrid
name: Kepler, S. O.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: About 10% of all stars exhibit absorption lines of ultra-high excited (UHE) metals (e.g. OVIII) in their optical spectra when entering the white dwarf cooling sequence. The recent discovery of a both spectroscopic and photometric variable UHE white dwarf led to the speculation that the UHE lines might be created in a shock-heated circumstellar magnetosphere. We investigate (multi-band) light curves from several ground- and space-based surveys of all 16 currently known UHE white dwarfs (including one newly discovered) and eight white dwarfs that show only the HeII line problem, as both phenomena are believed to be connected. We find that $75^{+8}_{-13}$% of the UHE white dwarfs, and $75^{+9}_{-19}$% of the HeII line problem white dwarfs are significantly photometrically variable, with periods ranging from 0.22d to 2.93d and amplitudes from a few tenth to a few hundredth mag. The high variability rate is in stark contrast to the variability rate amongst normal hot white dwarfs (we find $9^{+4}_{-2}$%), marking UHE and HeII line problem white dwarfs as a new class of variable stars. The period distribution of our sample agrees with both the orbital period distribution of post-common envelope binaries and the rotational period distribution of magnetic white dwarfs if we assume that the objects in our sample will spin-up as a consequence of further contraction. The lack of increasing photometric amplitudes towards longer wavelengths, as well as the non-detection of optical emission lines arising from the highly irradiated face of a hypothetical secondary in the optical spectra of our stars, makes it seem unlikely that an irradiated late type companion is the origin of the photometric variability. Instead, we believe that spots on the surfaces of these stars and/or geometrical effects of circumstellar material might be responsible. (abridged)
description: 24 pages, accepted for publication in A&A
Hexagon Wilson loop = six-gluon MHV amplitude
Creators: name: Drummond, J. M.
name: Henn, J.
name: Korchemsky, G. P.
name: Sokatchev, E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compare the two-loop corrections to the finite part of the light-like hexagon Wilson loop with the recent numerical results for the finite part of the MHV six-gluon amplitude in N=4 SYM theory by Bern, Dixon, Kosower, Roiban, Spradlin, Vergu and Volovich (arXiv:0803.1465 [hep-th]) and demonstrate that they coincide within the error bars and, at the same time, they differ from the BDS ansatz by a non-trivial function of (dual) conformal kinematical invariants. This provides strong evidence that the Wilson loop/scattering amplitude duality holds in planar N=4 SYM theory to all loops for an arbitrary number of external particles.
description: 34 pages, 3 figures; v2: appendix added, minor corrections made, new references inserted
Psychoanalytic perspectives in magic: some british and latin american paradigms
Creators: name: Χανιά, Ειρήνη Κ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2002
Subjects: Ψυχανάλυση(Φρόϋντ, Λακάν)
Μαγικός ρεαλισμός, Βρεττανία
Μαγικός ρεαλισμός, Λατινική Αμερική
Psychoanalysis(Freud, Lacan)
Magic realism, Britain
Magic realism, Latin America

description: Η παρούσα διατριβή προσεγγίζει με το ψυχαναλυτικό εργαλείο και ειδικότερα με τις θεωρίες του Φρόϋντ και του Λακάν, το μυθιστόρημα του μαγικού ρεαλισμού. Αντλώντας παραδείγματα από την βρεττανία και την Λατ. Αμερική. Στον 20ο αι. στο εισαγωγικό κεφάλαιο γίνεται η προσπάθεια να εντοπιστεί και να οριστεί ο μαγικός ρεαλισμός(Μ.Ρ.) στα σύγχρονα κριτικά ρεύματα και ως αποτέλεσμα της αποικιοκρατίας, από την οποία απορρέουν τα καυτά ερωτήματα γύρω από την ιστοριογραφία. Το κεφ. 1 ασχολείται με την αφήγηση του ονείρου στο Μ.Ρ. μέσα από φροϋδικά κείμενα. Το κεφ. 2 ασχολείται με τις έννοιες του μύθου και της ιστορίας υπό το πρίσμα της καταγραφής στη μνήμη και η σχέση της με την γραφή της ιστορίας. Στο κεφ. 3 τα γλωσσικά "παιχνίδια" της μεταφοράς και της μετωνυμίας. Εξετάζονται υπό το φως της επανάληψης της επιθυμίας. Το κεφ. 4 διαπραγματεύεται δυο βασικά σύμβολα και τη χρήση τους στο Μ.Ρ. : τον λαβύρινθο και τον καθρέφτη μέσα από τον φροϋδική έννοια του "Ανοικείου" καθώς και το ξαναδιάβασμα του Λακάν. Ο επίλογος ανακεφαλαιώνει τη συνάντηση της ψυχανάλυσης με το μαγικό ρεαλισμό
description: This thesis attempts to aproach magic realist fiction phychonalytically(by means of the theories of freud and Lakan), considering some british and Latin American paradigms. In the introductory chapter magic realism(M.R.) is attempted to be considered within the current critical research and as a result of postcolonialism : this is especially seen within the obsession with historiography. Chapter 1 deals with the dream narrative from the Freudian viewpoint. Chapter 2 explores the concepts of myth and history and their relation to memory and the historiographic writing. Chapter 3 deals with metaphor and metonymy as games which denote the return of repressed desire. Chapter 4 studies two overwhelming magic realist symbols : the labyrinth and the mirror as instances of the Freudian "Ancanny" and offers a Lacanian reading of the concept. The epilogue sums up the psychoanalytic reading of magic realistic fiction
Η κοίμηση της Θεοτόκου στην ορθόδοξη παράδοση
Creators: name: Ζησίδης, Παναγιώτης Α.
Publisher: name: Aristotle University of Thessaloniki
Year: 2002
Subjects: Κοίμηση
Θεοτόκος
Πρωτοευαγγέλιο
Δαμασκηνός
Παλαμάς
Καβάσιλας

description: Σκοπός της διατριβής είναι να αναδείξει τον πλούτο των ιδεών και των λόγων που οι Πατέρες της Εκκλησίας πρόσφεραν στον ανθρώπινο πολιτισμό με αφορμή το συναίσθημα και την ανάγκη της δικαίωσης που πηγάζει από το γεγονός της Κοίμησης. Κατά την έρευνα χρησιμοποιήθηκε κυρίως η φιλολογική και κοινωνιολογική ανάλυση των πατερικών και των απόκρυφων πηγών και έγινε προσέγγιση των θεολογικών σκέψεων με βάση τις ανάγκες της εποχής που τις παρήγαγαν. Με βάση αυτήν την προσέγγιση αναδεικνύεται ότι οι εποχές και οι κοινωνικές συνθήκες που αντιπροσωπεύουν επηρέασαν τη διδασκαλία των Πατέρων, οι οποίοι μέσα από τη γιορτή της Κοίμησης και με αφορμή αυτήν έθιξαν τα ουσιαστικά προβλήματα του καιρού τους.
Ignore that! Does highlighting a misleading cue improve recall memory for climate change science?
Creators: name: Harrington, Tara
Publisher: name: University of Tasmania
Year: 2024

description: Effectively communicating climate science is critical to garnering support for climate action. There can be many challenges to communicating scientific information. For example, information that is complex or conveys risk can be difficult to absorb. Expanding on previous research, we aimed to test how manipulation of cue salience effected recall memory, metacognition, and climate opinion. Participants (N = 159) were randomly allocated to read a summary relating to either a highlighted-cue, priming, or control condition before reading climate change facts. Following a retention interval participants completed a test of recall memory and answered questions related to opinions (belief, risk perception, policy support) about climate change as well as political affiliation. It was hypothesised that participants in the highlighted-cue condition would score higher on the memory and metacognition variables compared to the other conditions, and participants in the highlighted-cue and priming conditions would score higher on opinion variables than controls. A series of moderation analyses (with political affiliation as the moderator) were used to test the hypotheses. A significant difference between conditions was found for the variable of belief, but not in the hypothesised direction. None of the hypotheses were therefore supported by the data. Limitations, and future directions are discussed.
Limit cycles of effective theories
Creators: name: Glazek, Stanislaw D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A simple example is used to show that renormalization group limit cycles of effective quantum theories can be studied in a new way. The method is based on the similarity renormalization group procedure for Hamiltonians. The example contains a logarithmic ultraviolet divergence that is generated by both real and imaginary parts of the Hamiltonian matrix elements. Discussion of the example includes a connection between asymptotic freedom with one scale of bound states and the limit cycle with an entire hierarchy of bound states.
description: 8 pages, 3 figures, revtex4
Χωροταξική και αναπτυξιακή θεώρηση για την προστασία και ανάδειξη του φυσικού και πολιτιστικού περιβάλλοντος
Creators: name: Χριστιανόπουλος, Κωνσταντίνος,
Publisher: name: Aristotle University of Thessaloniki
Year: 2003
Subjects: Χωροταξικός σχεδιασμός
Προστασία φυσικού περιβάλλοντος
Πολιτιστικό περιβάλλον
Αναπτυξιακός σχεδιασμός
Spatial planning
Development theory
Protection of the natural environment
Cultural environment

description: Η χωροταξική και αναπτυξιακή θεώρηση για την προστασία του φυσικού και πολιτιστικού περιβάλλοντος απαιτεί μια διαφορετική αντίληψη των αρχών σχεδιασμού όπου το περιβάλλον αυτό εντάσσεται στις σύγχρονες αναπτυξιακές διαδικασίες μέσω ενός χωροταξικού σχεδιασμού σε περιφερειακό επίπεδο που εξειδικεύει τις παραμέτρους προστασίας, όχι μέσω αποσπασματικών δράσεων αλλά με σχεδιασμό σε υποπεριφερειακή κλίμακα. Με βάση την διεθνή και ελληνική εμπειρία το σύστημα σχεδιασμού του χώρου τίθεται μια διαφοροποιημένη μεθοδολογία χωροταξικού σχεδιασμού στα πλαίσια των αρχών της αειφορίας και οι αρχές αυτές εφαρμόζονται πρακτικά στον χώρο της κεντρικής Μακεδονίας.
A Guide to Transdisciplinarity for Partners
Creators: name: Irvine, Katherine N.
name: Miller, David
name: Schwarz, Gerald
name: Smyrniotopoulou, Alexandra
name: Vlahos, George
Publisher: name: Zenodo
Year: 2019

description: This report describes the transdisciplinary framework for the UNISECO project and provides ‘structures’ to facilitate meaningful interactions for shared learning, synthesis, integration and co-construction of innovative, actionable knowledge for practical outcomes. Material has been drawn from resources of academia and practice, including the personal experience of the UNISECO consortium partners. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N° 773901.
Convex projective structures on Gromov--Thurston manifolds
Creators: name: Kapovich, Michael
Publisher: name: arXiv
Year: 2006
Subjects: subject: Differential Geometry (math.DG)
subject: Group Theory (math.GR)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 53C15; 53C20; 20F06

description: We consider Gromov-Thurston examples of negatively curved n-manifolds which do not admit metrics of constant sectional curvature. We show that for each n some of the Gromov-Thurston manifolds admit strictly convex real-projective structures.
description: 28 pages, 6 figures
Dissipative preparation of W states in trapped ion systems
Creators: name: Cole, Daniel C.
name: Wu, Jenny J.
name: Erickson, Stephen D.
name: Hou, Pan-Yu
name: Wilson, Andrew C.
name: Leibfried, Dietrich
name: Reiter, Florentin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present protocols for dissipative entanglement of three trapped-ion qubits and discuss a scheme that uses sympathetic cooling as the dissipation mechanism. This scheme relies on tailored destructive interference to generate any one of six entangled W states in a three-ion qubit space. Using a beryllium-magnesium ion crystal as an example system, we theoretically investigate the protocol's performance and the effects of likely error sources, including thermal secular motion of the ion crystal, calibration imperfections, and spontaneous photon scattering. We estimate that a fidelity of $\sim$ 98 % may be achieved in typical trapped ion experiments with $\sim$ 1 ms interaction time. These protocols avoid timescale hierarchies for faster preparation of entangled states.
description: Includes additional references
Photoelectron experiments on semiconductor heterostructures using synchrotron radiation
Creators: name: Colbow, Kevin Michael
Publisher: name: University of British Columbia
Year: 2008

description: Photoelectron spectroscopy using synchrotron radiation has been used to study a variety of semiconductor heterostructures. The electronic properties and composition of the interfaces between selected wide band gap materials and GaAs have been explored. Three types of wide band gap materials were considered namely chalcogen compounds, alkaline-earth fluorides, and rare-earth trifluorides. Prior to the growth of thin surface layers, the semiconductor substrates had to be atomically clean. The final step of the cleaning process normally involves desorbing the surface oxide layer. The effect of surface roughening was observed for the first time as a result of optically monitoring the oxide desorption in GaAs. High resolution photoemission spectroscopy of clean GaAs (100) surfaces treated with H2S revealed that these surfaces are completely terminated by a GaSx species which is stable in air or water. The H2S treated surfaces are better defined in terms of the interfacial chemical bonding than the recently proposed chemical treatments involving Na2S or (NH4)2S [More abstract follow]
Nonextensive statistical mechanics and complex scale-free networks
Creators: name: Thurner, Stefan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: One explanation for the impressive recent boom in network theory might be that it provides a promising tool for an understanding of complex systems. Network theory is mainly focusing on discrete large-scale topological structures rather than on microscopic details of interactions of its elements. This viewpoint allows to naturally treat collective phenomena which are often an integral part of complex systems, such as biological or socio-economical phenomena. Much of the attraction of network theory arises from the discovery that many networks, natural or man-made, seem to exhibit some sort of universality, meaning that most of them belong to one of three classes: {\it random}, {\it scale-free} and {\it small-world} networks. Maybe most important however for the physics community is, that due to its conceptually intuitive nature, network theory seems to be within reach of a full and coherent understanding from first principles ...
Assessing YOLACT++ for real time and robust instance segmentation of medical instruments in endoscopic procedures
Creators: name: Ceron, Juan Carlos Angeles
name: Chang, Leonardo
name: Ochoa-Ruiz, Gilberto
name: Ali, Sharib
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Image-based tracking of laparoscopic instruments plays a fundamental role in computer and robotic-assisted surgeries by aiding surgeons and increasing patient safety. Computer vision contests, such as the Robust Medical Instrument Segmentation (ROBUST-MIS) Challenge, seek to encourage the development of robust models for such purposes, providing large, diverse, and annotated datasets. To date, most of the existing models for instance segmentation of medical instruments were based on two-stage detectors, which provide robust results but are nowhere near to the real-time (5 frames-per-second (fps)at most). However, in order for the method to be clinically applicable, real-time capability is utmost required along with high accuracy. In this paper, we propose the addition of attention mechanisms to the YOLACT architecture that allows real-time instance segmentation of instrument with improved accuracy on the ROBUST-MIS dataset. Our proposed approach achieves competitive performance compared to the winner ofthe 2019 ROBUST-MIS challenge in terms of robustness scores,obtaining 0.313 MI_DSC and 0.338 MI_NSD, while achieving real-time performance (37 fps)
description: Preprint under review for EMBC 2021 following IEEE guidelines
Inventory of Market and Policy Incentives Supporting AEFS
Creators: name: Zilans, Andis
name: Vanni, Francesco
name: Povellato, Andrea
Publisher: name: Zenodo
Year: 2019
Subjects: agroecology, farming system, market incentives, policy instruments, rural development programmes

description: This report presents the results of the compilation of an up-to-date inventory of examples of market and policy incentives, implemented at different levels (EU, non-EU, national and local), that serve to support transition processes towards Agro-Ecological Farming Systems (AEFS). Policy support has been widely criticised for its failure to facilitate comprehensive, long-term and integrated approaches such as agro-ecology. Consequently, it is recognized that there is a need to improve and develop a policy and economic framework within agricultural policies that supports and enables farmers to implement agro-ecological practices and, more broadly, that facilitates the transition towards AEFS. In the context of this report, transition pathways are analysed by considering the continuum from conventional to agro-ecological (food) systems.
 The market and policy incentives were identified by case area partners through a review of national agricultural policies and databases and consultations with stakeholders with knowledge of relevant national, regional and local market and policy incentives. The examples of market and policies tools included in the inventory were selected according two main criteria: (i) their “innovativeness” of the approach to stimulating the adoption of (more) sustainable practices at farm level; (ii) their potential for enabling a transformation of the entire food system, through their involvement of a broad range of rural and value chain actors in the design and implementation of the tools. The relevance and “innovativeness” of the tools, and their potential to stimulate transition, were assessed by the researchers and through semi-structured interviews with selected stakeholders both at the EU and national levels.
 A total of 69 examples of policy and market incentives from European countries were included in the inventory. Of these, a similar number are policy instruments (30) and market instruments (27), and fewer mixed initiatives involving a joint participation of public and private sector institutions (12). These figures illustrate the role already played by the private sector in promoting agro-ecological initiatives, and the opportunity for greater cooperation between public and private sector institutions in supporting agro-ecology. The majority of initiatives are implemented at the national level (47, compared to 11 at the local level). Although in the EU, national and regional Rural Development Programmes (RDPs) are the major source of financing of agro-ecological measures, relatively few market and policy initiatives included in the inventory are funded by RDPs as the focus was not on RDPs as such, but the most innovative initiatives. Most instruments in the inventory are initiated by national or local government institutions or private or NGO sector organizations.
A new detached K7 dwarf eclipsing binary system
Creators: name: Young, T. B.
name: Hidas, M. G.
name: Webb, J. K.
name: Ashley, M. C. B.
name: Christiansen, J. L.
name: Derekas, A.
name: Nutto, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an analysis of a new, detached, double-lined eclipsing binary system with K7 Ve components, discovered as part of the University of New South Wales Extrasolar Planet Search. The object is significant in that only 6 other binary systems are known with comparable or lower mass. Such systems offer important tests of mass-radius theoretical models. Follow-up photometry and spectroscopy were obtained with the 40-inch and 2.3m telescopes at SSO respectively. An estimate of the radial velocity amplitude from spectral absorption features, combined with the orbital inclination (83.5 deg) estimated from lightcurve fitting, yielded a total mass of M=(1.041 +/- 0.06)M_sun and component masses of M_A=(0.529 +/- 0.035)M_sun and M_B=(0.512 +/- 0.035)M_sun. The radial velocity amplitude estimated from absorption features (167 +/- 3)kmps was found to be less than the estimate from the H_alpha emission lines (175 +/- 1.5)kmps. The lightcurve fit produced radii of R_A=(0.641 +/- 0.05)R_sun and R_B=(0.608 +/- 0.06)R_sun, and a temperature ratio of T_B/T_A=0.980 +/- 0.015. The apparent magnitude of the binary was estimated to be V=13.9 +/- 0.2. Combined with the spectral type, this gave the distance to the binary as 169 +/- 14 pc. The timing of the secondary eclipse gave a lower limit on the eccentricity of the binary system of 0.0025 +/- 0.0005. This is the most statistically significant non-zero eccentricity found for such a system, possibly suggesting the presence of a third companion.
description: 6 pages, published in MNRAS (08/2006)
Spontaneous Lorentz violation and asymptotic flatness
Creators: name: Bonder, Yuri
name: Peterson, Christian
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Standard Model Extension (SME) is a generic parametrization for Lorentz violation and the phenomenological consequences of the minimal gravity sector of the SME are usually studied using a post-Newtonian expansion that requires spacetime to be asymptotically flat. However, there is a term in this sector for which these approximations are unable to make predictions; this is known as the $t$ puzzle. The present paper studies a model of spontaneous Lorentz violation in the minimal gravity sector of the SME in a static and spherically symmetric situation, when no additional matter fields are present. It is shown that, under the above mentioned assumptions, $t$ is the only term in the minimal gravity sector for which no asymptotically flat solutions exist. This stems from the fact that the $t$ term fixes the asymptotic behavior of all the pieces of the curvature tensor.
description: 8 pages + 3 pages (Appendices); accepted in PRD
On bound states and non-trivial fixed points in quantum field theories
Creators: name: Gat, Gil
Publisher: name: University of British Columbia
Year: 2008

description: The calculation of the binding energies in Quantum Field Theories (QFT's) is a hard and long standing problem. Even for weakly coupled field theories like QED the extraction of information on bound states from the perturbative expansion is considered an "art". In the first part of this thesis we define those bound states that can be recovered from the perturbative expansion (threshold bound states) and calculate their mass in various models. It is shown that the method of Pade approximation and the Bethe-Salpeter equation (supplemented by a proof of absence of on mass shell singularities) provide a systematic way of calculating threshold bound states masses from the perturbative expansion of the S-matrix. We check these methods on 1+1 and 2+1 dimensional models where there exist a good expansion for the S-Matrix i.e. either weak coupling or 1/N. In the second part of this thesis a less rigorous approach is taken. This part concentrates on the B=2 sector of the SU (3) Skyrme model. We show that one can generate classical configurations (skyrmions) corresponding to bound states of two particles of an effective field theory (the Skyrme model), starting from classical solutions of the euclidean SU(3) Yang-Mills theory. The parity doubling of the ground state in this sector is also investigated. The third and last part deals with non trivial fixed points in QFT's. It is shown that the infra-red fixed point of the chiral phase transition in d=3 is the critical Gross- Neveu model. This is yet another proof to the nonperturbative renormalizability of four- Fermi interactions in 2+1 dimensions. The critical exponents of this phase transition are calculated within the 1/N expansion. The renormalizability of the GN model is also demonstrated explicitly to next to leading order in l/N by calculating β function, effective potential and ultraviolet dimension of various operators. [more abstract]