cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A data-driven approach to constraining the atmospheric temperature structure of KELT-9b
Creators: name: Fossati, L.
name: Shulyak, D.
name: Sreejith, A. G.
name: Koskinen, T.
name: Young, M. E.
name: Cubillos, P. E.
name: Lara, L. M.
name: France, K.
name: Rengel, M.
name: Cauley, P. W.
name: Turner, J. D.
name: Wyttenbach, A.
name: Yan, F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context. Observationally constraining the atmospheric temperature-pressure (TP) profile of exoplanets is an important step forward for improving planetary atmosphere models, further enabling one to place the detection of spectral features and the measurement of atomic and molecular abundances through transmission and emission spectroscopy on solid ground. Aims. The aim is to constrain the TP profile of the ultra-hot Jupiter KELT-9b by fitting synthetic spectra to the observed H$α$ and H$β$ lines and identify why self-consistent planetary TP models are unable to fit the observations. Methods. We construct 126 one-dimensional TP profiles varying the lower and upper atmospheric temperatures, as well as the location and gradient of the temperature rise. For each TP profile, we compute transmission spectra of the H$α$ and H$β$ lines employing the Cloudy radiative transfer code, which self-consistently accounts for non-local thermodynamic equilibrium (NLTE) effects. Results. The TP profiles leading to best fit the observations are characterised by an upper atmospheric temperature of 10000-11000 K and by an inverted temperature profile at pressures higher than 10$^{-4}$ bar. We find that the assumption of local thermodynamic equilibrium (LTE) leads to overestimate the level population of excited hydrogen by several orders of magnitude, and hence to significantly overestimate the strength of the Balmer lines. The chemical composition of the best fitting models indicate that the high upper atmospheric temperature is most likely driven by metal photoionisation and that FeII and FeIII have comparable abundances at pressures lower than 10$^{-6}$ bar, possibly making the latter detectable. Conclusions. Modelling the atmospheres of ultra-hot Jupiters requires one to account for metal photoionisation. [abridged]
description: Accepted for publication by A&A
An alternative response to the off-shell quantum fluctuations: A step forward in resolution of the Casimir puzzle
Creators: name: Klimchitskaya, G. L.
name: Mostepanenko, V. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The spatially nonlocal response functions are proposed which nearly coincide with the commonly used local response for electromagnetic fields and fluctuations on the mass shell, but differ significantly for the off-shell fluctuating field. It is shown that the fundamental Lifshitz theory using the suggested response functions comes to an agreement with the measurement data for the Casimir force without neglecting the dissipation of free electrons. We demonstrate that reflectances of the on-shell electromagnetic waves calculated using the nonlocal and commonly employed local responses differ only slightly. The Kramers-Kronig relations for nonlocal response functions possessing the first- and second-order poles at zero frequency are derived, i.e., the proposed response satisfies the principle of causality. An application of these results to resolution of the Casimir puzzle, which lies in the fact that the Lifshitz theory is experimentally consistent only with discarded dissipation, is discussed.
description: 13 pages, 4 figures
Welsh Wreck Web Research Project (North Cardigan Bay). On-line research into the wreck of the: Plynlymon (133)
Creators: name: Walker, Gerrard
Publisher: name: Archaeology Data Service
Year: 2024

description: Welsh Wreck Web Research Project unpublished report series, 1
description: This is a report on the results internet-based research of the PLYNLYMON which has thought to have been wrecked on the St Patrick`s Causeway on the 9th March 1858. The results of the project indicate that the PLYNLYMON was not wrecked on this date. In fact, the vessel operated well after this date, changing its name to the TROUBADOUR.
Higher Harmonics in Non-Linear Vacuum from QED Effects Without Low Mass Intermediate Particles
Creators: name: Mendonca, J. Tito
name: de Deus, J. Dias
name: Ferreira, P. Castelo
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that in the presence of a slowly rotating strong transverse magnetic field there is an infinite spectrum of harmonic wave functions $A_n$ due to the first order QED correction (in $α^2$) given by the Euler-Heisenberg Lagrangian. The frequency shifts are integer multiples $\pm ω_0 n$ of the magnetic field angular frequency rotation $ω_0=2πν_m$ and the several modes $n$ are coupled to the nearest harmonics $n\pm 1$. This is a new effect due to QED vacuum fluctuations, not exploit before, that can explain, both qualitatively and quantatively, the recent experimental results of the PVLAS collaboration without the need of a low mass intermediate particle, hence dismiss the recent claim of the discovery of the axion. [Erratum: The PVLAS signal cannot be explained by this mechanism.]
description: 4 pages, 1 figure; includes Erratum: The PVLAS signal cannot be explained by this mechanism
Anisotropic Electron Spin Lifetime in (In,Ga)As/GaAs (110) Quantum Wells
Creators: name: Schreiber, L.
name: Duda, D.
name: Beschoten, B.
name: Güntherodt, G.
name: Schönherr, H. -P.
name: Herfort, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Anisotropic electron spin lifetimes in strained undoped (In,Ga)As/GaAs (110) quantum wells of different width and height are investigated by time-resolved Faraday rotation and time-resolved transmission and are compared to the (001)-orientation. From the suppression of spin precession, the ratio of in-plane to out-of-plane spin lifetimes is calculated. Whereas the ratio increases with In concentration in agreement with theory, a surprisingly high anisotropy of 480 is observed for the broadest quantum well, when expressed in terms of spin relaxation times.
description: 4 pages, 4 figures, revised
Observation of CP violation in B^0 -> eta' K^0 Decays
Creators: name: The BABAR Collaboration
name: Aubert, B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present measurements of the time-dependent CP-violation parameters S and C in B^0 --> eta' K^0 decays. The data sample corresponds to 384 million B Bar pairs produced by e^+ e^- annihilation at the Y(4S). The results are S = 0.58 +- 0.10 +- 0.03 and C = -0.16 +- 0.07 +- 0.03. We observe mixing-induced CP violation with a significance of 5.5 standard deviations in this b -> s penguin dominated mode.
description: 7 pages, 2 postscript figures, resubmitted Phys. Rev. Letters in response to review. Fixed a typo in the caption of the figure 2 (B0bar instead of B0 and vice versa); in the same caption now we define the raw asymmetry
Global and local statistics in turbulent emulsions
Creators: name: Yi, Lei
name: Toschi, Federico
name: Sun, Chao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Turbulent emulsions are complex physical systems characterized by a strong and dynamical coupling between small-scale droplets and large-scale rheology. By using a specifically designed Taylor-Couette (TC) shear flow system, we are able to characterize the statistical properties of a turbulent emulsion made of oil droplets dispersed in an ethanol-water continuous solution, at the oil volume fraction up to 40%. We find that the dependence of the droplet size on the Reynolds number of the flow at the volume fraction of 1% can be well described by Hinze's criterion. The distribution of droplet sizes is found to follow a log-normal distribution, hinting at a fragmentation process as the possible mechanism dominating droplet formation. Additionally, the effective viscosity of the turbulent emulsion increases with the volume fraction of the dispersed oil phase, and decreases when the shear strength is increased. We find that the dependence of the effective viscosity on the shear rate can be described by the Herschel-Bulkley model, with a flow index monotonically decreasing with increasing the oil volume fraction. This finding indicates that the degree of shear thinning systematically increases with the volume fraction of the dispersed phase. The current findings have important implications for bridging the knowledge on turbulence and low-Reynolds-number emulsion flows to turbulent emulsion flows.
The effect of spiral arm passages on the evolution of stellar clusters
Creators: name: Gieles, M.
name: Athanassoula, E.
name: Zwart, S. F. Portegies
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the effect of spiral arm passages on the evolution of star clusters on planar and circular orbits around the centres of galaxies. Individual passages with different relative velocity (V_drift) and arm width are studied using N-body simulations. When the ratio of the time it takes the cluster to cross the density wave to the crossing time of stars in the cluster is much smaller than one, the energy gain of stars can be predicted accurately in the impulsive approximation. When this ratio is much larger than one, the cluster is heated adiabatically and the net effect of heating is largely damped. For a given duration of the perturbation, this ratio is smaller for stars in the outer parts of the cluster compared to stars in the inner part. The cluster energy gain due to perturbations of various duration as obtained from our N-body simulations is in good agreement with theoretical predictions taking into account the effect of adiabatic damping. Perturbations by the broad stellar component of the spiral arms on a cluster are in the adiabatic regime and, therefore, hardly contribute to the energy gain and mass loss of the cluster. We consider the effect of crossings through the high density shocked gas in the spiral arms, which result in a more impulsive compression of the cluster. The time scale of disruption is shortest at ~0.8-0.9 R_CR since there V_drift is low. This location can be applicable to the solar neighbourhood. In addition, the four-armed spiral pattern of the Milky Way makes spiral arms contribute more to the disruption of clusters than in a similar but two-armed galaxy. Still, the disruption time due to spiral arm perturbations there is about an order of magnitude higher than what is observed for the solar neighbourhood.[ABRIDGED]
description: 11 pages, 9 figures, accepted for publication in MNRAS
Wall-Crossings in Toric Gromov-Witten Theory I: Crepant Examples
Creators: name: Coates, Tom
name: Iritani, Hiroshi
name: Tseng, Hsian-Hua
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Geometry (math.AG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53D45 (Primary), 14N35, 83E30 (Secondary)

description: Let X be a Gorenstein orbifold and let Y be a crepant resolution of X. We state a conjecture relating the genus-zero Gromov--Witten invariants of X to those of Y, which differs in general from the Crepant Resolution Conjectures of Ruan and Bryan--Graber, and prove our conjecture when X = P(1,1,2) and X = P(1,1,1,3). As a consequence, we see that the original form of the Bryan--Graber Conjecture holds for P(1,1,2) but is probably false for P(1,1,1,3). Our methods are based on mirror symmetry for toric orbifolds.
description: 71 pages, v2: typos corrected and references modified, v3: corrected errors in Proposition 2.9 and in Summary, v4: major revision, exposition unified from a viewpoint of VSHS, many signpostings for the logical structure; the authorship has changed, with Alessio Corti withdrawing
Weak-Hamiltonian dynamical systems
Creators: name: Vaisman, Izu
Publisher: name: arXiv
Year: 2007
Subjects: subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 53D20; 70H45; 93A30

description: A big-isotropic structure $E$ is an isotropic subbundle of $TM\oplus T^*M$, endowed with the metric defined by pairing. The structure $E$ is said to be integrable if the Courant bracket $[\mathcal{X},\mathcal{Y}]\inΓE$, $\forall\mathcal{X},\mathcal{Y}\inΓE$. Then, necessarily, one also has $[\mathcal{X},\mathcal{Z}]\inΓE^\perp$, $\forall\mathcal{Z}\inΓE^\perp$ \cite{V-iso}. A weak-Hamiltonian dynamical system is a vector field $X_H$ such that $(X_H,dH)\in E^\perp$ $(H\in C^\infty(M))$. We obtain the explicit expression of $X_H$ and of the integrability conditions of $E$ under the regularity condition $dim(pr_{T^*M}E)=const.$ We show that the port-controlled, Hamiltonian systems (in particular, constrained mechanics) \cite{{BR},{DS}} may be interpreted as weak-Hamiltonian systems. Finally, we give reduction theorems for weak-Hamiltonian systems and a corresponding corollary for constrained mechanical systems.
description: 19 pages, minor improvements
Welsh Wreck Web Research Project (North Cardigan Bay). On-line research into the wreck of the: Poltalloch
Creators: name: Cadwalader, Robert Dafydd
Publisher: name: Archaeology Data Service
Year: 2024

description: Welsh Wreck Web Research Project unpublished report series, 1
description: Research report on the wreck of the four-masted barque POLTALLOCH, of San Francisco.
Συστημικός κίνδυνος και συστημική σταθερότητα
Creators: name: Λιόλιου, Βηθλεέμ Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Οικονομική κρίση
Συστημικός κίνδυνος
Τραπεζικός κίνδυνος
Financial crisis
Systemic risk
Bank risk

description: Σκοπός της παρούσας μελέτης είναι η αξιολόγηση του συστημικού κινδύνου των χρηματοπιστωτικών ιδρυμάτων. Συγκεκριμένα εξετάζεται το φαινόμενο της οικονομικής κρίσης και οι συνέπειές της τόσο σε παγκόσμιο όσο και σε εγχώριο επίπεδο. Επιπρόσθετα, αναλύεται το χρηματοπιστωτικό σύστημα και η χρηματοπιστωτική κρίση που πλήττει τα τελευταία χρόνια σχεδόν όλες τις χώρες. Στη συνέχεια, κατηγοριοποιούνται και αναλύονται οι τραπεζικοί κίνδυνοι, δίνεται ένα θεσμικό πλαίσιο για την αντιμετώπισή τους και ορίζεται η μέθοδος μέτρησης συστημικού κινδύνου VAR. Ως προς την ολοκλήρωση της εν λόγω μελέτης διενεργήθηκε μία έρευνα τόσο στην διαδικτυακή βιβλιογραφία, όσο και στην έντυπη προκειμένου να συγκεντρωθούν τα απαιτούμενα στοιχεία. Ειδικότερα όσον αφορά την εκπόνηση της μελέτης συνέβαλαν σε μεγάλο βαθμό οι ερευνητικές προσεγγίσεις της Ελληνικής Ένωσης Τραπεζών. Σύμφωνα με τα αποτελέσματα παρά τις μεγάλες δυσκολίες που δημιουργεί η κρίση δεν υπάρχει καμία σκέψη από καμία μεγάλη ελληνική τράπεζα για μείωση των θέσεών τους στην περιοχή, πολύ περισσότερο την έξοδο από κάποια χώρα. Οι ελληνικές τράπεζες έχουν αρχίσει να προσελκύουν εκ νέου κεφάλαια και το τραπεζικό σύστημα θα συμμετάσχει στην προσπάθεια νέας ανόδου.
description: The purpose of this study is to evaluate the systemic risk of financial institutions. Specifically, the economic crisis is examined and its impact both globally and domestically. Additionally, the financial system is analyzed and the financial crisis, which affects almost all countries in recent years. Then, banking risks are categorized and analyzed, an institutional framework is given in order to deal with them and the systemic risk measurement method VAR is set. On completion of this study, a survey is conducted in both online and printed literature, in order to gather the required information. In particular, the research approaches of Greek Banks Association contributed a lot for this study. According to the results, despite the great difficulties created by the crisis there is no thought of any major Greek bank to reduce their positions in the region. The Greek banks have begun to attract new capitals and the banking system will participate in new growth effort.
Welsh Wreck Web Research Project (North Cardigan Bay). On-line research into the wreck of the: Portland (MADU Ref No. 16)
Creators: name: Konings, Rob
Publisher: name: Archaeology Data Service
Year: 2024

description: Welsh Wreck Web Research Project unpublished report series, 1
description: Research report on the the Portland - a wooden sailing vessel that sank early 19th century.
Supermassive black hole mergers and cosmological structure formation
Creators: name: Volonteri, Marta
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Massive black holes (MBHs), with masses in the range 10^3-10^8 Msolar, which merge with a companion black hole of similar mass are expected to be the most powerful source of gravitational radiation in the frequency range probed by LISA. MBH binaries can be detected by LISA up to z~5-15. Gravitational waves from MBH mergers can serve as a powerful tool to study the early evolution of the MBH population, and possibly the role played by MBHs in the joint evolution with their hosts. I review scenarios for the co-evolution of MBHs and cosmological structures, where MBH seeds form in pre-galactic structures. These black holes evolve then in a hierarchical fashion, following the merger hierarchy of their hosts. Accretion of gas, traced by quasar activity, plays a fundamental role in determining the two parameters defining a black hole, mass and spin. Gravitational waves, together with observations in electromagnetic bands, can help constrain the evolution of both MBH mass and spin.
description: Invited review at the Sixth International LISA Symposium
Κατευθυντήριες οδηγίες σχετικά με την ανιθαγένεια Νο. 4: Εξασφάλιση του Δικαιώματος κάθε παιδιού για την Κτήση Ιθαγένειας μέσω των Άρθρων 1-4 της Σύμβασης του 1961 για τη Μείωση της Ανιθαγένειας
Creators: name: Τσιότρα, Δέσποινα Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: κατευθυντήριες οδηγίες
ανιθαγένεια
παιδί
guidelines
statelessness
child

description: Η παρούσα διπλωματική εργασία αποτελεί τη σχολιασμένη μετάφραση ενός άρθρου της Ύπατης Αρμοστείας του ΟΗΕ για τους Πρόσφυγες σχετικά με την ανιθαγένεια. Αποτελείται από την ελληνική μετάφραση, το γλωσσάρι των όρων, την τεκμηρίωση αυτών και το σχολιασμό ορολογίας. Πρόκειται για ένα νομικό κείμενο το οποίο έχει σκοπό να αποτελέσει σημείο αναφοράς για μεταφραστές, νομικούς, το προσωπικό της Ύπατης Αρμοστείας του ΟΗΕ για τους Πρόσφυγες και όσους ασχολούνται με το συγκεκριμένο θεματικό πεδίο. Ο στόχος της μετάφρασης παραμένει ο ίδιος με αυτόν του κειμένου-πηγή. Το κείμενο που μεταφράστηκε αποτελεί τμήμα του άρθρου με τίτλο “UN High Commissioner for Refugees (UNHCR), Guidelines on Statelessness No. 4: Ensuring Every Child's Right to Acquire a Nationality through Articles 1-4 of the 1961 Convention on the Reduction of Statelessness”, 21 December 2012, HCR/GS/12/04 της Υπάτης Αρμοστείας του ΟΗΕ για τους Πρόσφυγες. Η γλώσσα-πηγή είναι η αγγλική και η γλώσσα-στόχος η ελληνική. Στο τέλος επιχειρείται ανάλυση των μεταφραστικών δυσκολιών και η αιτιολόγηση των τελικών επιλογών μέσα από συγκεκριμένες στρατηγικές και τεχνικές.
description: The present thesis is an annotated translation of a UNHCR Article on Statelessness. It includes technical terminology, specialized glossary of terms, documenting them and commenting terminology. This is a legal document which is intended to become a reference for translators, lawyers, and the staff of the UN High Commissioner for Refugees and those involved in this issue. The purpose of the translation remains the same as that of the source text. The text which is translated is part of the article entitled “UN High Commissioner for Refugees (UNHCR), Guidelines on Statelessness No. 4: Ensuring Every Child's Right to Acquire a Nationality through Articles 1-4 of the 1961 Convention on the Reduction of Statelessness”, 21 December 2012, HCR/GS/12/04. The source language is English and the target language is Greek. Furthermore, a thorough analysis of the translation difficulties as well as a justification of the final choice through specific strategies and techniques takes place.
Flugversuche beim DLR mit EC 135, Bo 105, Do 228, VFW 614 und A320 – Erfahrungen eines Projekt- und Entwicklungsingenieurs
Creators: name: Antrack, Florian
Publisher: name: Zenodo
Year: 2020
Subjects: Flugversuch
Luftfahrt
Zulassung
Entwicklung
Luftfahrzeug
Flugzeug
EASA
Entwicklungsbetrieb
Flugversuchsinstallation
Versuchseinbauten
Konfiguration
DLR
Hubschrauber
Flächenflugzeug
Passagierflugzeug
Dornier
VFW
Airbus
A320
ATRA
aerolectures2020
aerolectures

description: Der Vortrag stellt den Flugversuch in den heutigen Kontext der Luftfahrt mit seinen Verknüpfungen zur Zulassung und Entwicklung des Luftfahrzeuges. Welche Anforderungen gibt es? Welche Vorgaben der EASA müssen beachtet werden. Was ist ein Entwicklungsbetrieb? Anhand von Beispielen aus der täglichen Arbeit wird die praktische Umsetzung der Flugversuche dargestellt. Zusammen mit den beteiligten Wissenschaftlern bereitet der Projekt- und Entwicklungsingenieur die Flugversuche vor und übernimmt die Verantwortung für die strukturelle Implementierung der Flugversuchsinstallationen. Für einen sicheren Betrieb des Versuchsträgers bei sich ständig ändernden Versuchseinbauten ist die Konfigurationsdefinition und Konfigurationskontrolle unerlässlich. Das DLR betreibt sowohl Hubschrauber als auch Flächenflugzeuge. Dabei geht/ging es von der für 19 Passagiere ausgelegten Dornier Do 228 über die VFW 614 bis zum Airbus A320-200 als Advanced Technology Research Aircraft (ATRA).
description: Hamburg Aerospace Lecture Series --- Collection of Presentations --- http://www.AeroLectures.de
Orbital variability of the optical linear polarization of the $γ$-ray binary LS I +61 303 and new constraints on the orbital parameters
Creators: name: Kravtsov, Vadim
name: Berdyugin, Andrei V.
name: Piirola, Vilppu
name: Kosenkov, Ilia A.
name: Tsygankov, Sergey S.
name: Chernyakova, Maria
name: Malyshev, Denys
name: Sakanoi, Takeshi
name: Kagitani, Masato
name: Berdyugina, Svetlana V.
name: Poutanen, Juri
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We studied the variability of the linear polarization and brightness of the $γ$-ray binary LS I +61 303. High-precision BVR photopolarimetric observations were carried out with the Dipol-2 polarimeter on the 2.2 m remotely controlled UH88 telescope at Mauna Kea Observatory and the 60 cm Tohoku telescope at Haleakala Observatory (Hawaii) over 140 nights in 2016--2019. We determined the position angle of the intrinsic polarization $θ\simeq 11^\circ$, which can either be associated with the projection of the Be star's decretion disk axis on the plane of sky, or can differ from it by $90^\circ$. Using the Lomb-Scargle method, we performed timing analyses and period searches of our polarimetric and photometric data. We found statistically significant periodic variability of the normalized Stokes parameters $q$ and $u$ in all passbands. The most significant period of variability, $P_\text{Pol} = 13.244 \pm 0.012$ d, is equal to one half of the orbital period $P_\text{orb} = 26.496$ d. Using a model of Thomson scattering by a cloud that orbits the Be star, we obtained constraints on the orbital parameters, including a small eccentricity $e<0.2$ and periastron phase of $ϕ_\text{p}\approx 0.6$, which coincides with the peaks in the radio, X-ray, and TeV emission. These constraints are independent of the assumption about the orientation of the decretion disk plane on the sky. We also extensively discuss the apparent inconsistency with the previous measurements of the orbital parameters from radial velocities. By folding the photometry data acquired during a three-year time span with the orbital period, we found a linear phase shift of the moments of the brightness maximum, confirming the possible existence of superorbital variability.
description: 15 pages, 16 figures, accepted for publication in A&A
The effects of topical ibuprofen in an inflammatory model : delayed onset muscle soreness
Creators: name: Mack, Rana L.
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of this study was two fold: 1) to determine the effectiveness of topical ibuprofen versus oral ibuprofen and a placebo in the treatment of an inflammatory condition, delayed onset muscle soreness and 2) to determine the ibuprofen plasma concentrations following topical administration as compared to orally. Thirty female subjects were randomly assigned to either an oral ibuprofen treatment group, a topical ibuprofen treatment group, or a placebo group. The subjects then underwent an eccentric exercise protocol used to induce delayed onset muscle soreness. Muscle soreness and eccentric torque were quantified before exercise, immediately post exercise, at 24 hours, 48 hours, 72 hours, and 144 hours after the exercise. All groups displayed peak soreness at 48 hours, the placebo group marked the highest average (60.95mm), the oral group had an average of 54.55mm while the topical group had the lowest average at 50.35mm. There was a marked drop in eccentric torque following the exercise which then returned to baseline values at 72 hours. No significant difference was found between groups for either measure. This data indicates that neither oral nor topical ibuprofen were effective in relieving pain or in restoring strength in this model of inflammation, DOMS. However, a significant difference in plasma ibuprofen concentrations between type of drug administration was found (p=0.033). To determine plasma concentrations a five subject cross-over design was used. Subjects participated in the eccentric exercise bout with either their right or left arm. Seven days of treatment with either oral or topical ibuprofen was then initiated. A seven day washout period followed. The exercise protocol was repeated using the other arm and subsequent treatment with the alternative ibuprofen. During both treatment periods four blood samples were taken: prior to the onset of treatment, on day 3, day 5, and day 7of treatment. The fact that minimal amounts of ibuprofen enter the systemic system after topical administration leads researchers to believe associated side effects would be decreased drastically. Research should continue into the efficacy of topical ibuprofen in various other models of inflammation.
Welsh Wreck Web Research Project (North Cardigan Bay). On-line research into the wreck of the: Pride of the Sea
Creators: name: Millar, Peter
Publisher: name: Archaeology Data Service
Year: 2024

description: Welsh Wreck Web Research Project unpublished report series, 1
description: The Pride of the Sea was built by James Hooper and Co at the Baltimore ship yards. And launched in 1853 The Pride of the sea was a Sailing ship, clipper rigged. The ship ran aground on the 8th - 9th December 1854, on the north end of St Patricks Causeway.
LAVARNET: Neural Network Modeling of Causal Variable Relationships for Multivariate Time Series Forecasting
Creators: name: Koutlis, Christos
name: Papadopoulos, Symeon
name: Schinas, Manos
name: Kompatsiaris, Ioannis
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Neural and Evolutionary Computing (cs.NE)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Multivariate time series forecasting is of great importance to many scientific disciplines and industrial sectors. The evolution of a multivariate time series depends on the dynamics of its variables and the connectivity network of causal interrelationships among them. Most of the existing time series models do not account for the causal effects among the system's variables and even if they do they rely just on determining the between-variables causality network. Knowing the structure of such a complex network and even more specifically knowing the exact lagged variables that contribute to the underlying process is crucial for the task of multivariate time series forecasting. The latter is a rather unexplored source of information to leverage. In this direction, here a novel neural network-based architecture is proposed, termed LAgged VAriable Representation NETwork (LAVARNET), which intrinsically estimates the importance of lagged variables and combines high dimensional latent representations of them to predict future values of time series. Our model is compared with other baseline and state of the art neural network architectures on one simulated data set and four real data sets from meteorology, music, solar activity, and finance areas. The proposed architecture outperforms the competitive architectures in most of the experiments.
Supersymmetric Vertex Models with Domain Wall Boundary Conditions
Creators: name: Zhao, Shao-You
name: Zhang, Yao-Zhong
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: By means of the Drinfeld twists, we derive the determinant representations of the partition functions for the $gl(1|1)$ and $gl(2|1)$ supersymmetric vertex models with domain wall boundary conditions. In the homogenous limit, these determinants degenerate to simple functions.
description: 19 pages, 4 figures, to be published in J. Math. Phys
The 2019 eruption of recurrent nova V3890 Sgr: observations by Swift, NICER and SMARTS
Creators: name: Page, K. L.
name: Kuin, N. P. M.
name: Beardmore, A. P.
name: Walter, F. M.
name: Osborne, J. P.
name: Markwardt, C. B.
name: Ness, J. -U.
name: Orio, M.
name: Sokolovsky, K. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: V3890 Sgr is a recurrent nova which has been seen in outburst three times so far, with the most recent eruption occurring on 2019 August 27 UT. This latest outburst was followed in detail by the Neil Gehrels Swift Observatory, from less than a day after the eruption until the nova entered the Sun observing constraint, with a small number of additional observations after the constraint ended. The X-ray light-curve shows initial hard shock emission, followed by an early start of the super-soft source phase around day 8.5, with the soft emission ceasing by day 26. Together with the peak blackbody temperature of the super-soft spectrum being ~100 eV, these timings suggest the white dwarf mass to be high, ~1.3 M_sun. The UV photometric light-curve decays monotonically, with the decay rate changing a number of times, approximately simultaneously with variations in the X-ray emission. The UV grism spectra show both line and continuum emission, with emission lines of N, C, Mg and O being notable. These UV spectra are best dereddened using an SMC extinction law. Optical spectra from SMARTS show evidence of interaction between the nova ejecta and wind from the donor star, as well as the extended atmosphere of the red giant being flash-ionized by the super-soft X-ray photons. Data from NICER reveal a transient 83 s quasi-periodic oscillation, with a modulation amplitude of 5 per cent, adding to the sample of novae which show such short variabilities during their super-soft phase.
description: 20 pages, 13 figures (9 in colour). The full version of Table 2 is provided as a PDF within the source file download
Η ανάπτυξη της κριτικής σκέψης στο σχολείο και το μάθημα των θρησκευτικών
Creators: name: Δέλλιου, Ολυμπία Πασχάλη
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Σκέψη
Κριτική σκέψη
Θρησκευτική αγωγή
Thinking
Critical thinking
Religious education

description: Η διπλωματική εργασία, πραγματεύεται το θέμα της ανάπτυξης της κριτικής σκέψης μέσα από την ορθόδοξη θρησκευτική αγωγή, δηλαδή μέσω του μαθήματος των θρησκευτικών. Αρχικά έγινε προσπάθεια να διασαφηνιστεί η διαφορά μεταξύ σκέψης και κριτική σκέψης. Επιπρόσθετα, έγινε διεξοδική αναφορά και περιγραφή όλων των συνιστωσών της σκέψης, που είναι η γνωστική, η συναισθηματική και η ψυχοκινητική της πλευρά. Ιδιαίτερο βάρος και προσοχή δόθηκε στην ηθική – συναισθηματική πλευρά της σκέψης, η οποία αναπτύσσεται ιδιαιτέρως μέσω της θρησκευτικής αγωγής. Ακόμη, επιδιώχθηκε η σύνδεση της κριτικής σκέψης με την χριστιανική αρετή της διάκρισης και επισημάνθηκαν τα κοινά στοιχεία των δύο αυτών εννοιών. Τέλος, πραγματοποιήθηκε συστηματική αναφορά και ανάλυση των δύο βασικών συνιστωσών της παιδαγωγικής και διδακτικής διαδικασίας για την ανάπτυξη της σκέψης, που δεν είναι άλλοι από το δάσκαλο και τον μαθητή.
description: This research at postgraduate level, deals with the development of critical thinking through the Orthodox religious education, id est through religion classes. Initially, an attempt was made to clarify the difference between thinking and critical thinking. Additionally, there is a detailed report and a description of all components of thought, which is the cognitive, affective and psychomotor side. Particularly, emphasis and attention was given to the moral-emotional side of thinking, which develops especially through religious education. It also sought to link critical thinking to the Christian virtue of discrimination and highlighted the common elements of these two concepts. Finally, a systematic report and analysis has been accomplished, for both key components of pedagogy and teaching process regarding the development of thought, which are none other than the teacher and the student.
Το ηλεκτρονικό μάρκετινγκ των δήμων και η επίδραση του στον τουρισμό
Creators: name: Φράγκου, Πολυξένη Δούκα
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: ηλεκτρονικό μάρκετινγκ
ιστοσελίδες δήμων
τουρισμός
electronic marketing
websites of municipalities
tourism

description: Η παρούσα διπλωματική εργασία πραγματεύεται το ηλεκτρονικό μάρκετινγκ που εφαρμόζουν οι δήμοι και πως αυτό επιδρά στον τουρισμό. Ειδικότερα, στην εν λόγω εργασία επιλέχθηκε η μεθοδολογία της μελέτης περιπτώσεων, προκειμένου να μελετηθεί το ηλεκτρονικό μάρκετινγκ που ακολουθεί στην επίσημη ιστοσελίδα του ο Δήμος Θεσσαλονίκης και ο Δήμος Σαμοθράκης. Τα ερευνητικά ερωτήματα που τίθενται στην συγκεκριμένη έρευνα σχετίζονται με τις πληροφορίες που παρέχουν οι υπό εξέταση ιστοσελίδες και οι οποίες αφορούν κατά βάση τον τουρισμό. Περαιτέρω, διερευνάται η συσχέτιση των παρεχόμενων πληροφοριών με τη δημιουργία μιας ταυτότητας στην οποία θα αποτυπώνονται τα μοναδικά στοιχεία που διακρίνουν την κάθε περιοχή, ώστε με βάση την ταυτότητα αυτή να καταστεί δυνητικός τουριστικός προορισμός. Επιπλέον, μέσα από την μελέτη του σχεδιασμού των επίσημων διαδικτυακών τόπων των δύο δήμων εξετάζεται η ευκολία εντοπισμού, η προσβασιμότητα καθώς και ο βαθμός χρηστικότητας που χαρακτηρίζει τις συγκεκριμένες ιστοσελίδες. Από τα ευρήματα της έρευνας καταδεικνύεται ότι αφενός ο Δήμος Θεσσαλονίκης και αφετέρου ο Δήμος Σαμοθράκης επιδιώκουν να ενισχύσουν την εικόνα τους μέσα από την δημιουργία μιας ταυτότητας που βασίζεται κυρίως σε πληροφορίες τουριστικού και πολιτιστικού περιεχομένου. Συνεπώς, το ηλεκτρονικό μάρκετινγκ αποτελεί ένα εργαλείο εξαιρετικά χρήσιμο για τους δήμους, οι οποίοι με την υιοθέτηση των κατάλληλων στρατηγικών ηλεκτρονικού μάρκετινγκ στις επίσημες ιστοσελίδες τους έχουν την δυνατότητα να συμβάλλουν αποτελεσματικά στην τόνωση του τουρισμού.
description: This thesis focuses on e-marketing practiced by municipalities and its effect on tourism. A case study was preformed in order to analyze the electronic marketing of the official website of the Municipality of Thessaloniki and the Municipality of Samothrace. The research questions that were posed in this thesis are related to the information provided by the sites and are focused mainly on tourism. Furthermore, it investigates the correlation of information provided by creating an identity that reflects unique elements which distinguish each region studied. Based on that identity, it becomes a potential tourist destination. Through the study of the design of the official websites of both municipalities the accessibility and the degree of usability featured on these websites was examined. The findings of the survey shows that both the Municipality of Thessaloniki and the Municipality of Samothrace seek to enhance their image through the creation of an identity based mainly on tourism and cultural information. Therefore, it was concluded that e-marketing is an extremely useful tool for municipalities, which by adopting and implementing the appropriate strategies to their official websites can effectively contribute to stimulate and enhance tourism.
Dust in Brown Dwarfs and Extra-solar Planets I. Chemical composition and spectral appearance of quasi-static cloud layers
Creators: name: Helling, Ch.
name: Woitke, P.
name: Thi, W. -F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We aim at understanding the formation of cloud layers in quasi-static substellar atmospheres. The time-dependent description presented in (Helling & Woitke 2006) is a kinetic model describing nucleation, growth and evaporation. It is extended to treat gravitational settling and is applied to the static-stationary case of substellar model atmospheres. From the solution for the dust moments, we determine the grain size distribution function which, together with the calculated material volume fractions, provides the basis to calculate the opacities of the composite dust grains. The cloud particles in brown dwarfs and hot giant-gas planets are found to be small in the high atmospheric layers (0.01mum), and composed of a rich mixture of all considered condensates, in particular the abundant MgSiO3[s], Mg2SiO4[s] and SiO2[s]. As the particles settle downward, they increase in size and reach several 100mum in the deepest layers. The more volatile parts of the grains evaporate and the particles stepwise purify to form composite particles of high-temperature condensates in the deeper layers, mainly Fe[s] and Al2O3[s]. The gas phase abundances of the elements involved in the dust formation process vary by orders of magnitudes throughout the atmosphere. The grain size distribution is found to be relatively broad in the upper atmospheric layers but often strongly peaked in the deeper layers. The spectral appearance of the cloud layers in the mid IR (7-20mum) is close to a grey body with only weak broad features on a few percent level, mainly caused by MgSiO3[s], and Mg2SiO4[s]. Our models predict that the gas phase depletion is much weaker as compared to phase-equilibrium calculations in the high atmospheric layers. [abridged]
description: 16 pages, 9 Figures. A&A accepted
Nanowires for heat conversion
Creators: name: Swinkels, Milo Yaro
name: Zardo, Ilaria
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: This review focuses on the investigation and enhancement of the thermoelectric properties of semiconducting nanowires (NWs). NWs are nanostructures with typical diameters between few to hundreds of nm and length of few to several microns, exhibiting a high surface-to-volume ratio. Nowadays an extraordinary control over their growth has been achieved, enabling also the integration of different types of heterostructures, which can lead to the engineering of the functional properties of the NWs. In this review, we discuss all concepts which have been presented and achieved so far for the improvements of the thermoelectric performances of semiconducting NWs. Furthermore, we present a brief survey of the experimental methods which enable the investigation of the thermoelectric properties of these nanostructures.
description: Topical Review
Simple implementation of complex functionals: scaled selfconsistency
Creators: name: Lima, Matheus P.
name: Pedroza, Luana S.
name: da Silva, Antonio J. R.
name: Fazzio, A.
name: Vieira, Daniel
name: Freire, Henrique J. P.
name: Capelle, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We explore and compare three approximate schemes allowing simple implementation of complex density functionals by making use of selfconsistent implementation of simpler functionals: (i) post-LDA evaluation of complex functionals at the LDA densities (or those of other simple functionals); (ii) application of a global scaling factor to the potential of the simple functional; and (iii) application of a local scaling factor to that potential. Option (i) is a common choice in density-functional calculations. Option (ii) was recently proposed by Cafiero and Gonzalez. We here put their proposal on a more rigorous basis, by deriving it, and explaining why it works, directly from the theorems of density-functional theory. Option (iii) is proposed here for the first time. We provide detailed comparisons of the three approaches among each other and with fully selfconsistent implementations for Hartree, local-density, generalized-gradient, self-interaction corrected, and meta-generalized-gradient approximations, for atoms, ions, quantum wells and model Hamiltonians. Scaled approaches turn out to be, on average, better than post-approaches, and unlike these also provide corrections to eigenvalues and orbitals. Scaled selfconsistency thus opens the possibility of efficient and reliable implementation of density functionals of hitherto unprecedented complexity.
description: 12 pages, 1 figure
Quantitative precipitate classification and grain boundary property control in Co/Ni-base superalloys
Creators: name: McAuliffe, Thomas P
name: Bantounas, Ioannis
name: Reynolds, Lucy R
name: Foden, Alex
name: Hardy, Mark
name: Britton, T Ben
name: Dye, David
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A correlative approach is employed to simultaneously assess structure and chemistry of (carbide and boride) precipitates in a set of novel Co/Ni-base superalloys. Structure is derived from electron backscatter diffraction (EBSD) with pattern template matching, and chemistry obtained with energy dispersive X-ray spectroscopy (EDS). It is found that the principal carbide in these alloys is Mo and W rich with the M6C structure. An M2B boride, also exhibiting Mo and W segregation is observed at B levels above approximately 0.085 at.%. These phases are challenging to distinguish in an SEM with chemical information (EDS or backscatter Z-contrast) alone, without the structural information provided by EBSD. Only correlative chemical and structural fingerprinting is necessary and sufficient to fully define a phase. The identified phases are dissimilar to those predicted using ThermoCalc. We additionally perform an assessment of the grain boundary serratability in these alloys, and observe that significant amplitude is only obtained in the absence of pinning intergranular precipitates.
Student destraction detection Project Thesis.pdf
Creators: name: Keerio, Zeeshan
Publisher: name: figshare
Year: 2021
Subjects: subject: 100504 Data Communications
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 100699 Computer Hardware not elsewhere classified
subject: 100503 Computer Communications Networks
subject: 100509 Video Communications

description: The objective of this Project was to build an automatic system that allowed the faculties to capture and make a summary of student behaviors and detect student weather attentive or distracted in the VLE as a part of data acquisition for the decision making process. Here, we present a system to detect the Distraction level of the students. It uses only information provided by the typical built-in web-camera present in a laptop computer, and was designed to work in real time. We combine information about the movements of the eyes and head, and facial emotions to produce a concentration index with three classes of engagement: “very engaged”, “nominally engaged” and “not engaged at all”, and generates a notification.
Simulation of nanoscale triple gate FinFETs, with TCAD tools - A comparative study
Creators: name: Τσιάρα, Αρτεμισία Σωκράτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Προσομοιώσεις
Τριπλής πύλης
Εργαλεία
FinFET
Silvaco
Synopsys

description: Σκοπός της παρούσας διπλωματικής εργασίας είναι η μελέτη δύο διαφορετικών τύπων FinFET, όσον αφορά τα φυσικά μοντέλα που εφαρμόστηκαν σε αυτά καθώς και τα διαφορετικά είδη πλέγματος. Ο στόχος αυτός πραγματοποιήθηκε με τη βοήθεια των δύο μεγαλύτερων εργαλείων TCAD προσομοίωσης από τις εταιρίες Silvaco και Synopsys. Το Κεφάλαιο 1 είναι μία εισαγωγή στα ηλεκτρονικά και τη μετάβαση στις νέες τεχνολογίες καθώς μικραίνουν οι διαστάσεις. Το Κεφάλαιο 2 έχει μία σύντομη ιστορία για το TCAD και κάποιες πληροφορίες για τη μέθοδο επίλυσης διαφορικών εξισώσεων FEM. Επιπλέον, υπάρχει μία πλήρης περιγραφή των φυσικών μοντέλων που θα εφαρμοστούν στα FinFETs. Το Κεφάλαιο 3 περιέχει πληροφορίες σχετικά με την εταιρία Silvaco και τα εργαλεία που χρησιμοποιήθηκαν. Το Κεφάλαιο 4 κάνει αναφορά στην εταιρία Synopsys και στα αντίστοιχα εργαλεία που χρησιμοποιήθηκαν στις προσομοιώσεις. Το Κεφάλαιο 5 παρουσιάζει τα αποτελέσματα των προσομοιώσεων. Τέλος, το Κεφάλαιο 6 κάνει σύγκριση των αποτελεσμάτων και συνοψίζει τα πλεονεκτήματα και μειονεκτήματα της κάθε πλατφόρμας.
description: The purpose of the current thesis is to study two different types of FinFETs, a long channel and a short channel one, concerning the physical models and the type of mesh used in each case. This objective will be achieved with the help of the two major software tools in TCAD simulation, ATLAS Silvaco and Sentaurus Synopsys. Chapter 1 is an introduction to electronics and the transition to new technologies as the channel length scales down. Chapter 2 has a brief history of TCAD and its components, as well as the Finite Element Method (FEM) that helps finding approximate solutions to boundary value problems for partial differential equations. Also, there is a full description of the physical models to be used in the devices. Chapter 3 contains all the necessary information for Silvaco and a summary of the platform used in the thesis. Chapter 4 is about Synopsys and a short reference to the suite and tools that helped us perform the simulations. Chapter 5 presents the simulation results for both devices, LG=30nm and LG=100nm and both tools used for this purpose. Finally, Chapter 6 compares their results and summarizes the advantages and disadvantages of each tool.