cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Classical to Quantum Transition of a Driven Nonlinear Nanomechanical Resonator
Creators: name: Katz, Itamar
name: Retzker, Alex
name: Straub, Raphael
name: Lifshitz, Ron
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We seek the first indications that a nanoelectromechanical system (NEMS) is entering the quantum domain as its mass and temperature are decreased. We find them by studying the transition from classical to quantum behavior of a driven nonlinear Duffing resonator. Numerical solutions of the equations of motion, operating in the bistable regime of the resonator, demonstrate that the quantum Wigner function gradually deviates from the corresponding classical phase-space probability density. These clear differences that develop due to nonlinearity can serve as experimental evidence, in the near future, that NEMS resonators are entering the quantum domain.
Οι διατομίτες της Λήμνου και οι περιβαλλοντικές τους εφαρμογές
Creators: name: Στεφάνου, Ευάγγελος Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Διατομίτες
Λήμνος
Ελαφροβαρή Αδρανή Υλικά
Diatomites
Lemnos
Lightweight Aggregates

description: Οι διατομίτες της Παρανησιάς Λήμνου μελετήθηκαν με την μέθοδο περιθλασιμετρίας ακτίνων X (XRD) για την ορυκτολογική τους σύσταση, την μέθοδο ηλεκτρονικής μικροσκοπίας σάρωσης (SEM) για την μορφολογία τους και με την χρήση πολωτικού μικροσκοπίου για την πετρογραφία τους. Κατασκευάστηκαν σφαιρίδια ελαφροβαρών υλικών (LWAS : Lightweight Aggregates), χρησιμοποιώντας διατομίτη ως πρότυπο υλικό και ελαιοπυρήνα ως καύσιμη ύλη. Τα ελαφροβαρή υλικά (LWAS) αναλύθηκαν ως προς την ορυκτολογική τους σύσταση και μετρήθηκαν ως προς τα φυσικομηχανικά χαρακτηριστικά τους (φαινόμενο βάρος, θλιπτική αντοχή και πορώδες) πριν και μετά την όπτηση. Ορυκτολογικά, οι διατομίτες αποτελούνται από οπάλιο, χαλαζία, τριδυμίτη, χριστοβαλίτη, αργιλικά ορυκτά, μοσχοβίτη, καλιούχο άστριο, πλαγιόκλαστα, γύψο και άμορφα υλικά. Τα ελαφροβαρή υλικά (LWAS) αποτελούνται από οπάλιο, χαλαζία, τριδυμίτη, χριστοβαλίτη, καλιούχο άστριο, πλαγιόκλαστα, αργιλικά ορυκτά, μοσχοβίτη, άμορφα υλικά και σε υψηλότερες θερμοκρασίες σχηματίστηκε μουλίτης. Το φαινόμενο βάρος και η θλιπτική αντοχή των ελαφροβαρών υλικών αυξάνονται με την αύξηση διατομιτικού υλικού και τη θερμοκρασία, ενώ το πορώδες μειώνεται. Τα παραπάνω ελαφροβαρή διατομιτικά υλικά (LWAS) είναι δυνατόν να χρησιμοποιηθούν ως βοηθητικά φίλτρα διήθησης, θερμομονωτικά, ηχομονωτικά και πληρωτικά υλικά, καθώς και στην παραγωγή σκυροδέματος
description: Paranisia diatomites of Limnos have been studied by X-Ray Diffraction (XRD) for their mineralogical composition, by Scanning Electron Microscope (SEM) for their morphology and by polarized microscope for their petrography. Lightweight aggregate (LWAS) pellets have been produced by using diatomite as standard material and crude olive cake as combustible material. The lightweight aggregates (LWAS) have been analyzed for their mineralogical composition and have been measured for their physicomechanical characteristics (bulk density, compressive strength and porosity) before and after calcining. Mineralogically, the diatomites are composed of opal, quartz, tridymite, cristobalite, clay-minerals, muscovite, K-feldspar, plagioclace, gypsum and amorphous materials. The lightweight aggregates (LWAS) are composed of opal, quartz, tridymite, cristobalite, K-feldspar, plagioclasts, clay-minerals, muscovite, amorphous materials and in higher temperatures mullite has been formed. The bulk density and compressive strength of lightweight aggregates (LWAS) are increasing with increasing diatomite material and temperature, while porosity is decreasing. The forenamed diatomite lightweight aggregates (LWAS) can be used as filter aids, thermal and sound insulators, fillers and in cement production.
Solar-like oscillations in the metal-poor subgiant nu Indi: constraining the mass and age using asteroseismology
Creators: name: Bedding, Timothy R.
name: Butler, R. Paul
name: Carrier, Fabien
name: Bouchy, Francois
name: Brewer, Brendon J.
name: Eggenberger, Patrick
name: Grundahl, Frank
name: Kjeldsen, Hans
name: McCarthy, Chris
name: Nielsen, Tine Bjorn
name: Retter, Alon
name: Tinney, Christopher G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Asteroseismology is a powerful method for determining fundamental properties of stars. We report the first application to a metal-poor object, namely the subgiant star nu Ind. We measured precise velocities from two sites, allowing us to detect oscillations and infer a large frequency separation of Delta_nu = 24.25 +/- 0.25 microHz. Combining this value with the location of the star in the H-R diagram and comparing with standard evolutionary models, we were able to place constraints on the stellar parameters. In particular, our results indicate that nu Ind has a low mass (0.85 +/- 0.04 M_sun) and is at least 9 Gyr old.
description: accpted for publication in ApJ
A three-dimensional hydrodynamics simulation of oxygen-shell burning in the final evolution of a fast-rotating massive star
Creators: name: Yoshida, Takashi
name: Takiwaki, Tomoya
name: Aguilera-Dena, David R.
name: Kotake, Kei
name: Takahashi, Koh
name: Nakamura, Ko
name: Umeda, Hideyuki
name: Langer, Norbert
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We perform for the first time a 3D hydrodynamics simulation of the evolution of the last minutes pre-collapse of the oxygen shell of a fast-rotating massive star. This star has an initial mass of 38 M$_\odot$, a metallicity of $\sim$1/50 Z$_\odot$, an initial rotational velocity of 600 km s$^{-1}$, and experiences chemically homogeneous evolution. It has a silicon- and oxygen-rich (Si/O) convective layer at (4.7-17)$\times 10^{8}$ cm, where oxygen-shell burning takes place. The power spectrum analysis of the turbulent velocity indicates the dominance of the large-scale mode ($\ell \sim 3$), which has also been seen in non-rotating stars that have a wide Si/O layer. Spiral arm structures of density and silicon-enriched material produced by oxygen-shell burning appear in the equatorial plane of the Si/O shell. Non-axisymmetric, large-scale ($m \le 3$) modes are dominant in these structures. The spiral arm structures have not been identified in previous non-rotating 3D pre-supernova models. Governed by such a convection pattern, the angle-averaged specific angular momentum becomes constant in the Si/O convective layer, which is not considered in spherically symmetrical stellar evolution models. Such spiral arms and constant specific angular momentum might affect the ensuing explosion or implosion of the star.
description: 6 pages, 6 figures, accepted for publication in MNRAS Letters
Discovery of Two T Dwarf Companions with the Spitzer Space Telescope
Creators: name: Luhman, K. L.
name: Patten, B. M.
name: Marengo, M.
name: Schuster, M. T.
name: Hora, J. L.
name: Ellis, R. G.
name: Stauffer, J. R.
name: Sonnett, S. M.
name: Winston, E.
name: Gutermuth, R. A.
name: Megeath, S. T.
name: Backman, D. E.
name: Henry, T. J.
name: Werner, M. W.
name: Fazio, G. G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery of T dwarf companions to the nearby stars HN Peg (G0V, 18.4 pc, ~0.3 Gyr) and HD 3651 (K0V, 11.1 pc, ~7 Gyr). During an ongoing survey of 5'x5' fields surrounding stars in the solar neighborhood with IRAC aboard the Spitzer Space Telescope, we identified these companions as candidate T dwarfs based on their mid-IR colors. Using near-IR spectra obtained with SpeX at the NASA IRTF, we confirm the presence of methane absorption that characterizes T dwarfs and measure spectral types of T2.5+/-0.5 and T7.5+/-0.5 for HN Peg B and HD 3651 B, respectively. By comparing our Spitzer data to images from 2MASS obtained several years earlier, we find that the proper motions of HN Peg B and HD 3651 B are consistent with those of the primaries, confirming their companionship. HN Peg B and HD 3651 B have angular separations of 43.2" and 42.9" from their primaries, which correspond to projected physical separations of 795 and 476 AU, respectively. A comparison of their luminosities to the values predicted by theoretical evolutionary models implies masses of 0.021+/-0.009 and 0.051+/-0.014 Msun for HN Peg B and HD 3651 B. In addition, the models imply an effective temperature for HN Peg B that is significantly lower than the values derived for other T dwarfs at similar spectral types, which is the same behavior reported by Metchev & Hillenbrand for the young late-L dwarf HD 203030 B. Thus, the temperature of the L/T transition appears to depend on surface gravity. Meanwhile, HD 3651 B is the first substellar companion directly imaged around a star that is known to harbor a close-in planet from RV surveys. The discovery of this companion supports the notion that the high eccentricities of close-in planets like the one near HD 3651 may be the result of perturbations by low-mass companions at wide separations.
description: Astrophysical Journal, in press
Unambiguous discrimination of mixed states: A description based on system-ancilla coupling
Creators: name: Zhou, Xiang-Fa
name: Zhang, Yong-Sheng
name: Guo, Guang-Can
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a general description on the unambiguous discrimination of mixed states according to the system-environment coupling, and present a procedure to reduce this to a standard semidefinite programming problem. In the two states case, we introduce the canonical vectors and partly simplify the problem to the case of discrimination between pairs of canonical vectors. By considering the positivity of the two by two matrices, we obtain a series of new upper bounds of the total success probability which depends on both the prior probabilities and specific state structures.
description: 6 pages, 1 table, added some examples
GRB 191016A: A Long Gamma-Ray Burst Detected by TESS
Creators: name: Smith, Krista Lynne
name: Ridden-Harper, Ryan
name: Fausnaugh, Michael
name: Daylan, Tansu
name: Omodei, Nicola
name: Racusin, Judith
name: Weaver, Zachary
name: Barclay, Thomas
name: Veres, Péter
name: Kann, D. Alexander
name: Arimoto, Makoto
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The TESS exoplanet-hunting mission detected the rising and decaying optical afterglow of GRB 191016A, a long Gamma-Ray Burst (GRB) detected by Swift-BAT but without prompt XRT or UVOT follow-up due to proximity to the moon. The afterglow has a late peak at least 1000 seconds after the BAT trigger, with a brightest-detected TESS datapoint at 2589.7 s post-trigger. The burst was not detected by Fermi-LAT, but was detected by Fermi-GBM without triggering, possibly due to the gradual nature of rising light curve. Using ground-based photometry, we estimate a photometric redshift of $z_\mathrm{phot} = 3.29\pm{0.40}$. Combined with the high-energy emission and optical peak time derived from TESS, estimates of the bulk Lorentz factor $Γ_\mathrm{BL}$ range from $90-133$. The burst is relatively bright, with a peak optical magnitude in ground-based follow-up of $R=15.1$ mag. Using published distributions of GRB afterglows and considering the TESS sensitivity and sampling, we estimate that TESS is likely to detect $\sim1$ GRB afterglow per year above its magnitude limit.
description: 10 pages, 7 figures. Accepted for publication in the Astrophysical Journal
Ανάλυση Δεδομένων και Οικονομικών Δεικτών, μέσω Εφαρμογής Αλγορίθμων Στατιστικής Μάθησης, σε Σημασιολογικά Δεδομένα Προϋπολογισμών ΟΤΑ του OpenBudgets.eu
Creators: name: Παπαδοπούλου, Αναστασία Θεόδωρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Δημοσιονομικά Δεδομένα
Διασυνδεδεμένα Δεδομένα
Στατιστική Ανάλυση Δεικτών
Fiscal Data
Linked Data
Statistical Ratio Analysis

description: Στη παρούσα εργασία πραγματοποιείται στατιστική ανάλυση δεικτών σε σημασιολογικά δεδομένα προϋπολογισμών πρωτοβάθμιων Οργανισμών Τοπικής Αυτοδιοίκησης, με στόχο την αξιολόγηση των οικονομικών τους στοιχείων. Ως πρωτογενή δεδομένα χρησιμοποιήθηκαν τα δεδομένα προϋπολογισμών του δήμου Αθηναίων και του δήμου Θεσσαλονίκης. Τα δεδομένα αυτά μετατράπηκαν σε σημασιολογική μορφή με χρήση του εργαλείου LinkedPipes ETL, βάσει του εννοιολογικού μοντέλου για δεδομένα προϋπολογισμών του OpenBudgets.eu. Για να ανακτηθεί η επιθυμητή πληροφορία που αφορά τους δείκτες, δημιουργήθηκαν και εκτελέσθηκαν κατάλληλα SPARQL ερωτήματα. Για τα αποτελέσματα των ερωτημάτων αυτών, που αποτυπώνουν τις τιμές επιλεγμένων αριθμοδεικτών, πραγματοποιήθηκε στατιστική ανάλυση μέσω RStudio. Υπολογίσθηκαν τα μέτρα κεντρικής τάσης, τα μέτρα διασποράς, ο συντελεστής λοξότητας και ο συντελεστής κύρτωσης και πραγματοποιήθηκε οπτικοποίηση των αποτελεσμάτων. Η γραφική απεικόνιση περιλαμβάνει θηκογράμματα, ιστογράμματα, αναπαράσταση του πίνακα συσχέτισης και τέλος δημιουργία χρονοσειρών για μια πρώτη παρουσίαση της εξέλιξης των δεικτών χρονικά. Τέλος, με συγκριτική διερεύνηση των δύο δήμων έγινε εξαγωγή χρήσιμων συμπερασμάτων, όπως αυτά προκύπτουν από την ερμηνεία των αποτελεσμάτων.
description: In this thesis, we describe statistical analysis of accounting ratios applied in open linked data of municipalities’ budget data, aiming at evaluating their overall financial condition. We used the budget data both of the municipality of Athens and the municipality of Thessaloniki. These raw data were converted into semantic form using LinkedPipes ETL tool, based on the data model of OpenBudgets.eu. In order to extract the information needed about specific ratios, we created and executed properly SPARQL queries. Through RStudio we held statistical ratio analysis, by calculating the measures of central tendency, measures of dispersion, the coefficient of skewness and the coefficient of kurtosis. Data visualization includes boxplots, histograms, correlation matrix representation and graphical display of time series. The study ends with the conclusions that arise through the analysis.
Απόψεις εκπαιδευτικών για την διδασκαλία της ιστορίας στο νηπιαγωγείο: τα αποτελέσματα μίας έρευνας
Creators: name: Τσιορλίνη, Αικατερίνη Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Ιστορία-Νηπιαγωγείο
Ιστορικός Χρόνος
History-Kindergarten
Historical Time

description: Σκοπός της μεταπτυχιακής μελέτης είναι η έρευνα της διδασκαλίας της ιστορίας στο νηπιαγωγείο. Η εργασία μελετά εάν είναι δυνατή η διδασκαλία αυτή και με ποιους τρόπους επιτυγχάνεται στον τομέα του νηπιαγωγείου. Ερευνάται ο ορισμός της ιστορίας γενικότερα. Η εργασία μελετά την έννοια του χρόνου και πως αυτή κατανοείται από τα νήπια. Τοποθετούνται παραδείγματα στο πολυπολιτισμικό πλαίσιο. Ακόμη γίνεται ιστορική αναδρομή σε όλη την προσχολική αγωγή. Παρατίθενται τα αποτελέσματα της έρευνας και σχολιάζονται οι απόψεις των εκπαιδευτικών.
description: The purpose of the graduate study is the study of history teaching in kindergarten. The study investigates whether it is possible the history teaching in kindergarten and how achieved in the nursery sector. The study investigates the definition of history in general. The research studies the concept of time and how it is understood by toddlers. Also, the study places examples in multicultural context and chronologies the history of preschool education. In conclusion, the research presents the results of research and discussed the views of teachers.
Αντιλήψεις δασκάλων αναφορικά με την εκπαίδευση για την ιδιότητα του πολίτη και τη λειτουργικότητά της ως εκπαιδευτικό εργαλείο στη σχολική τάξη
Creators: name: Τσιούγκου, Ειρήνη Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: ιδιότητα του πολίτη
εκπαίδευση για την ιδιότητα του πολίτη
διαπολιτισμική εκπαίδευση
citizenship
citizenship education
intercultural education

description: Κινούμενοι σε μία εποχή , έντονης οικονομικής, κοινωνικής και πολιτικής κρίσης, η ανάγκη από ενεργούς και κριτικά σκεπτόμενους πολίτες είναι επιτακτική. Δεδομένου ότι η εκπαίδευση διαδραματίζει καθοριστικό ρόλο στη μετάδοση των γνώσεων , των στάσεων, των αξιών και των δεξιοτήτων που απαιτούνται για να γίνουν οι μαθητές αποτελεσματικοί πολίτες της παγκόσμιας κοινότητας, θεώρησα σκόπιμο να ερευνήσω τις στάσεις που έχουν διαμορφώσει οι δάσκαλοι, οι πυλώνες της εκπαιδευτικής διαδικασίας, αναφορικά με το θέμα της ιδιότητας του πολίτη, τόσο σε θεωρητικό όσο και σε πρακτικό επίπεδο.Σκοπός της παρούσας μελέτης είναι η διερεύνηση των αντιλήψεων των δασκάλων αναφορικά με την ιδιότητα του πολίτη και τη λειτουργικότητά της ως εκπαιδευτικό εργαλείο στη σχολική τάξη. Συγκεκριμένα μελετήθηκαν οι απόψεις τους για την ιδιότητα του πολίτη, την εκπαίδευση για την ιδιότητα του πολίτη και τον τρόπο διδασκαλίας της, όπως επίσης, διερευνήθηκαν και κατατάχθηκαν με σειρά προτεραιότητας, οι στόχοι της εκπαίδευσης για την ιδιότητα του πολίτη που θεωρούν σημαντικούς και η συχνότητα υλοποίησης εκπαιδευτικών δράσεων στην τάξη τους για την ιδιότητα του πολίτη. Η έρευνα πραγματοποιήθηκε την άνοιξη του 2016 σε δασκάλους δημοτικής εκπαίδευσης και το ερευνητικό εργαλείο ήταν ένα ερωτηματολόγιο, το οποίο αποτελούνταν από κλειστού τύπου ερωτήσεις. Στην έρευνα έλαβαν μέρος 183 δάσκαλοι.
description: We are moving into an era of intense economic, social and political crisis, the need of active and critically thinking citizens is imperative. Due to the fact that education plays a key role in the transmission of knowledge, attitudes, values and skills which are essential for students to become effective citizens of global community, I deemed appropriate to investigate the attitude of teachers’ –of the pillars of educational process-about the term of citizenship, both in theoretical and practical level. The aim of the study is to investigate teachers’ perceptions about citizenship and its functionality as educational tool in the classroom. Specifically I investigated their views on citizenship, on citizenship education and on ways of teaching citizenship, as well as, on the objectives of citizenship education that they consider as important. Finally, I examined the frequency with which they perform certain actions in their classroom. The survey was conducted in the spring of 2016 using a questionnaire with closed questions. In our research took part 183 primary school teachers.
Macroscopic quantum jumps and entangled state preparation
Creators: name: Metz, Jeremy
name: Beige, Almut
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recently we predicted a random blinking, i.e. macroscopic quantum jumps, in the fluorescence of a laser-driven atom-cavity system [Metz et al., Phys. Rev. Lett. 97, 040503 (2006)]. Here we analyse the dynamics underlying this effect in detail and show its robustness against parameter fluctuations. Whenever the fluorescence of the system stops, a macroscopic dark period occurs and the atoms are shelved in a maximally entangled ground state. The described setup can therefore be used for the controlled generation of entanglement. Finite photon detector efficiencies do not affect the success rate of the state preparation, which is triggered upon the observation of a macroscopic fluorescence signal. High fidelities can be achieved even in the vicinity of the bad cavity limit due to the inherent role of dissipation in the jump process.
description: 14 pages, 12 figures, proof of the robustness of the state preparation against parameter fluctuations added, figure replaced
Additional file 1: of ANXA2 promotes esophageal cancer progression by activating MYC-HIF1A-VEGF axis
Creators: name: Ma, Sai
name: Lu, Chen-Chen
name: Yang, Li-Yan
name: Wang, Juan-Juan
name: Wang, Bo-Shi
name: Cai, Hong-Qing
name: Hao, Jia-Jie
name: Xu, Xin
name: Cai, Yan
name: Zhang, Yu
name: Wang, Ming-Rong
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer

description: Supplementary Materials and Methods. (DOCX 30 kb).
Regge theory in a Holographic dual of QCD in the Veneziano Limit
Creators: name: Amorim, Artur
name: Costa, Miguel S.
name: Järvinen, Matti
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We initiate the study of Regge theory in a bottom-up holographic model for QCD in the Veneziano limit, where the backreaction of the quarks to the gluon dynamics is included. We determine the parameters of the model by carrying out a precise fit to the meson spectrum in QCD. The spectrum for spin-one and pseudoscalar mesons is well reproduced. We then generalise the model to incluce higher spin fields in the bulk trajectories dual to the Pomeron and meson Regge trajectories at the boundary. With this setting, we fit the masses of the mesons with spins $J=2$, $3$, and $4$,as well as the experimental data of the total cross-sections $σ(γγ\to X)$, $σ(γp \to X)$ and $σ(p p \to X)$. For the cross sections we obtain a $χ^2_{\mathrm{d.o.f.}}$ of $0.74$ for a total of 199 experimental points.
description: 52 pages, 6 figures
Suzaku Detection of Solar Wind Charge Exchange Emission from a Variety of Highly-ionized Ions in an Interplanetary Coronal Mass Ejection
Creators: name: Asakura, Kazunori
name: Matsumoto, Hironori
name: Okazaki, Koki
name: Yoneyama, Tomokage
name: Noda, Hirofumi
name: Hayashida, Kiyoshi
name: Tsunemi, Hiroshi
name: Nakajima, Hiroshi
name: Katsuda, Satoru
name: Ishi, Daiki
name: Ezoe, Yuichiro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: X-ray emission generated through solar-wind charge exchange (SWCX) is known to contaminate X-ray observation data, the amount of which is often significant or even dominant, particularly in the soft X-ray band, when the main target is comparatively weak diffuse sources, depending on the space weather during the observation. In particular, SWCX events caused by interplanetary coronal mass ejections (ICMEs) tend to be spectrally rich and to provide critical information about the metal abundance in the ICME plasma. We analyzed the SN1006 background data observed with Suzaku on 2005 September 11 shortly after an X6-class solar flare, signatures of which were separately detected together with an associated ICME. We found that the data include emission lines from a variety of highly ionized ions generated through SWCX. The relative abundances of the detected ions were found to be consistent with those in past ICME-driven SWCX events. Thus, we conclude that this event was ICME-driven. In addition, we detected a sulfur XVI line for the first time as one from the SWCX emission, the fact of which suggests that it is the most spectrally-rich SWCX event ever observed. We suggest that observations of ICME-driven SWCX events can provide a unique probe to study the population of highly-ionized ions in the plasma, which is difficult to measure in currently-available in-situ observations.
description: 26 pages, 11 figures, 6 tables, accepted for publication in PASJ
Recursive Relations For Processes With n Photons Of Noncommutative QED
Creators: name: Jafari, Abolfazl
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The recursion relations are derived for multi-photon processes of noncommutative QED. The relations concern purely photonic processes as well as the processes with two fermions involved, both for arbitrary number of photons at tree level. It is shown that despite of the dependence of noncommutative vertices on momentum, in contrast to momentum-independent color factors of QCD, the recursion relation method can be employed for multi-photon processes of noncommutative QED.
description: 22 pages, 6 eps figures, LaTeX; v2: the spinoral part is refined, ref added; v3: tiny changes in eqs. 50, 83 and 85
A first Chandra view of the cool core cluster A1668: offset cooling and AGN feedback cycle
Creators: name: Pasini, Thomas
name: Gitti, Myriam
name: Brighenti, Fabrizio
name: O'Sullivan, Ewan
name: Gastaldello, Fabio
name: Temi, Pasquale
name: Hamer, Stephen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a multi-wavelength analysis of the galaxy cluster A1668, performed by means of new EVLA and Chandra observations and archival H$α$ data. The radio images exhibit a small central source ($\sim$14 kpc at 1.4 GHz) with L$_{\text{1.4 GHz}}$ $\sim$6 $\cdot$ 10$^{23}$ W Hz$^{-1}$. The mean spectral index between 1.4 GHz and 5 GHz is $\sim$ -1, consistent with the usual indices found in BCGs. The cooling region extends for 40 kpc, with bolometric X-ray luminosity L$_{\text{cool}} = 1.9\pm 0.1 \cdot$ 10$^{43}$ erg s$^{-1}$. We detect an offset of $\sim$ 6 kpc between the cluster BCG and the X-ray peak, and another offset of $\sim$ 7.6 kpc between the H$α$ and the X-ray peaks. We discuss possible causes for these offsets, which suggest that the coolest gas is not condensing directly from the lowest-entropy gas. In particular, we argue that the cool ICM was drawn out from the core by sloshing, whereas the H$α$ filaments were pushed aside from the expanding radio galaxy lobes. We detect two putative X-ray cavities, spatially associated to the west radio lobe (cavity A) and to the east radio lobe (cavity B). The cavity power and age of the system are P$_{\text{cav}} \sim$ 9 $\times$10$^{42}$ erg s$^{-1}$ and t$_{\text{age}} \sim$5.2 Myr, respectively. Evaluating the position of A1668 in the cooling luminosity-cavity power parameter space, we find that the AGN energy injection is currently consistent within the scatter of the relationship, suggesting that offset cooling is likely not breaking the AGN feedback cycle.
description: 16 pages, 14 figures
Λειτουργικές καταγραφές των κτητορικών τυπικών της Κωνσταντινουπόλεως
Creators: name: Παπαδόπουλος, Γεώργιος Ευσταθίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Λειτουργικές καταγραφές
Κτητορικά τυπικά
Κωνσταντινούπολη
Liturgical references
Foundational typika
Constantinople

description: Σκοπός της μεταπτυχιακής εργασίας ήταν ο εντοπισμός και η μελέτη των λειτουργικών καταγραφών στα κτητορικά τυπικά των μονών της Κωνσταντινουπόλεως. Οι καταγραφές αυτές, όπως προέκυψαν μέσα από τα κείμενα και τις διατάξεις των κτητορικών τυπικών, μελετήθηκαν συγκριτικά, σε μία προσπάθεια ανάδειξης τόσο των ομοιοτήτων, όσο, κυρίως, και των διαφοροποιήσεων που οι συντάκτες επιφέρουν στα κείμενά τους∙ και τούτο παρόλο που τα περισσότερα κείμενα χρησιμοποιούν ως πρότυπο ή συντάσσονται σύμφωνα με το πνεύμα που διέπει προγενέστερα τυπικά, που έχουν εφαρμογή σε μεγάλες και περιφανείς μονές. Αναφερθήκαμε σε θέματα που άπτονται της λειτουργικής ζωής μίας μοναχικής αδελφότητας, όπως τους καιρούς της προσευχής, την εξομολόγηση των μοναχών και την προσέλευσή τους στο μυστήριο της Θείας Ευχαριστίας, τις νηστευτικές διατάξεις και τις καταλύσεις των νηστειών, την τέλεση των ιερών μνημοσύνων, τα εκκλησιαστικά λειτουργικά διακονήματα. Διαπιστώσαμε μέσα από την έρευνά μας πως η πολυμορφία και ο υφολογικός πλουραλισμός που διέπουν τη σύλληψη και την καταγραφή των σχετικών διατάξεων στα κτητορικά τυπικά των μονών δεν οδηγούν σε παρέκκλιση από το στόχο που αυτά υπηρετούν, δηλαδή την κατ’ άνθρωπον οργάνωση και διοίκηση και την κατά Θεόν βίωση της μοναχικής πολιτείας.
description: The aim of this graduate thesis is to identify and study liturgical references included in the foundational typika of the monasteries of Constantinople. These references, recorded from the texts and provisions of the foundational typika, were comparatively studied in an effort to identify not only their similarities but also their differences, even though most of them were based on earlier foundational typika of the renowned monasteries. Other issues regarding the liturgical life of the monastic fraternity such as the praying, confession, holy sacrament, fasting, memorial services, ecclesiastic liturgical services, were also studied. Through this research, became evident the diversity in the content and the pluralism in the references of the foundational typika of the monasteries. However, they have remained constant and never deviated from their main objective they serve which is the human aspect in the organization and the administration of the monasteries and the “experience” of the divine in the monastic community.
Additional file 3: of Low agreement between modified-Schwartz and CKD-EPI eGFR in young adults: a retrospective longitudinal cohort study
Creators: name: Webster-Clark, Michael
name: Jaeger, Byron
name: Zhong, Yi
name: Filler, Guido
name: Alvarez-Elias, Ana
name: Franceschini, Nora
name: DĂ­az-GonzĂĄlez de Ferris, Maria
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Plant Biology

description: Subgroup-specific Concordance Correlation Coefficients. This table presents subgroup-specific concordance correlation coefficients beyond those described in the text. (DOCX 13 kb)
Relative allergenicity of modified bovine milk proteins
Creators: name: Jang, Colin B.
Publisher: name: University of British Columbia
Year: 2008

description: Cow's milk contains a variety of proteins which are capable of eliciting an allergic reaction. The casein fraction and S-lactoglobulin of the whey fraction are recognized as the most potent allergens in cow's milk. It is not known, however, whether the individual sub-fractions of casein possess equal allergenicity. In this study, the relative allergenicities of ce81 and S casein were determined. The relative allergenicities of both caseins after enzymic dephosphorylation were also investigated. In addition, the relative allergenicity of whey after the partial removal of S-lactoglobulin by FeCl3 precipitation was studied. The relative allergenicity of the milk proteins was determined by the passive cutaneousa naphylaxis (PCA) assay, which utilized antisera obtained from mice that were exposed to the test proteins using separate oral and intraperitoneal experimental protocols. In addition, an enzyme linked immunosorbent assay (ELISA) was used to determine the relative concentrations of antigen specific immunoglobulins G and E in the antisera. Mice which received the test proteins by oral administration were not sensitized against the proteins. In contrast, results obtained from mice exposed to the test proteins by intraperitoneal injection, revealed thatd ephosphorylated ces, casein and S casein were allergenic while native a81 casein was not. The dephosphorylation of S-casein did not significantly affect allergenicity. The partial removal of g-lactoglobulin did not significantly reduce the allergenicity of whey. The proteins which remain in the whey after treatment with FeCl3 (primarily u-lactalbumin and a residual amount of 0-lactoglobulin) are equal to untreated whey in their ability to produce an allergic reaction.
Hydrodynamic and magnetohydrodynamic computations inside a rotating sphere
Creators: name: Mininni, P. D.
name: Montgomery, D. C.
name: Turner, L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Geophysics (physics.geo-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Numerical solutions of the incompressible magnetohydrodynamic (MHD) equations are reported for the interior of a rotating, perfectly-conducting, rigid spherical shell that is insulator-coated on the inside. A previously-reported spectral method is used which relies on a Galerkin expansion in Chandrasekhar-Kendall vector eigenfunctions of the curl. The new ingredient in this set of computations is the rigid rotation of the sphere. After a few purely hydrodynamic examples are sampled (spin down, Ekman pumping, inertial waves), attention is focused on selective decay and the MHD dynamo problem. In dynamo runs, prescribed mechanical forcing excites a persistent velocity field, usually turbulent at modest Reynolds numbers, which in turn amplifies a small seed magnetic field that is introduced. A wide variety of dynamo activity is observed, all at unit magnetic Prandtl number. The code lacks the resolution to probe high Reynolds numbers, but nevertheless interesting dynamo regimes turn out to be plentiful in those parts of parameter space in which the code is accurate. The key control parameters seem to be mechanical and magnetic Reynolds numbers, the Rossby and Ekman numbers (which in our computations are varied mostly by varying the rate of rotation of the sphere) and the amount of mechanical helicity injected. Magnetic energy levels and magnetic dipole behavior are exhibited which fluctuate strongly on a time scale of a few eddy turnover times. These seem to stabilize as the rotation rate is increased until the limit of the code resolution is reached.
description: 26 pages, 17 figures, submitted to New Journal of Physics
Grain Alignment and Polarized Emission from Magnetized T Tauri Disks
Creators: name: Cho, Jungyeon
name: Lazarian, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The structure of magnetic fields within protostellar disks may be studied via polarimetry provided that grains are aligned in respect to magnetic field within the disks. We explore alignment of dust grains by radiative torque in T Tauri disks and provide predictions for polarized emission for disks viewed at different wavelengths and viewing angles. We show that the alignment is especially efficient in outer part of the disks. In the presence of magnetic field, these aligned grains produce polarized emission in infrared wavelengths. We consider a simple model of an accretion disk and provide predictions for polarization that should be available to both instruments that do not resolve the disks and future instruments that will resolve the disks. As the surface magnetic field and the bulk magnetic field play different roles for the disk dynamics, we consider separately the contributions that arises from the surface areas of the disk and its interior. We find that the polarized emission drops for wavelengths shorter than $\sim 10 μm$. Between $\sim 10 μm$ and $\sim 100 μm$, the polarized emission is dominated by the emission from the surface layer of the disks and the degree of polarization can be as large as $\sim 10%$ for unresolved disks. The degree of polarization is around 2-3 % level at wavelengths larger than $\sim100μm$.
description: 17 pages; accepted by ApJ; discussion on scattering has been added
Cepheids with giant companions. I. Revealing a numerous population of double-lined binary Cepheids
Creators: name: Pilecki, Bogumił
name: Pietrzyński, Grzegorz
name: Anderson, Richard I.
name: Gieren, Wolfgang
name: Taormina, Mónica
name: Narloch, Weronika
name: Evans, Nancy R.
name: Storm, Jesper
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Masses of classical Cepheids of 3 to 11 M$\odot$ are predicted by theory but those measured, clump between 3.6 and 5 M$\odot$. As a result, their mass-luminosity relation is poorly constrained, impeding our understanding of basic stellar physics and the Leavitt Law. All Cepheid masses come from the analysis of 11 binary systems, including only 5 double-lined and well-suited for accurate dynamical mass determination. We present a project to analyze a new, numerous group of Cepheids in double-lined binary (SB2) systems to provide mass determinations in a wide mass interval and study their evolution. We analyze a sample of 41 candidate binary LMC Cepheids spread along the P-L relation, that are likely accompanied by luminous red giants, and present indirect and direct indicators of their binarity. In a spectroscopic study of a subsample of 18 brightest candidates, for 16 we detected lines of two components in the spectra, already quadrupling the number of Cepheids in SB2 systems. Observations of the whole sample may thus lead to quadrupling all the Cepheid mass estimates available now. For the majority of our candidates, erratic intrinsic period changes dominate over the light travel-time effect due to binarity. However, the latter may explain the periodic phase modulation for 4 Cepheids. Our project paves the way for future accurate dynamical mass determinations of Cepheids in the LMC, Milky Way, and other galaxies, which will potentially increase the number of known Cepheid masses even 10-fold, hugely improving our knowledge about these important stars.
description: 12 pages, 7 figures, 3 tables, accepted for publication in ApJ
CCID5: An implementation of the BBR Congestion Control algorithm for DCCP and its impact over multi-path scenarios
Creators: name: Moreno, Nathalie Romo
name: Amend, Markus
name: Brunstrom, Anna
name: Kassler, Andreas
name: Rakocevic, Veselin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences
subject: C.2.2; C.2.6

description: Providing multi-connectivity services is an important goal for next generation wireless networks, where multiple access networks are available and need to be integrated into a coherent solution that efficiently supports both reliable and non reliable traffic. Based on virtual network interfaces and per path congestion controlled tunnels, the MP-DCCP based multiaccess aggregation framework presents as a novel solution that flexibly supports different path schedulers and congestion control algorithms as well as reordering modules. The framework has been implemented within the Linux kernel space and has been tested over different prototypes. Experimental results have shown that the overall performance strongly depends upon the congestion control algorithm used on the individual DCCP tunnels, denoted as CCID. In this paper, we present an implementation of the BBR (Bottleneck Bandwidth Round Trip propagation time) congestion control algorithm for DCCP in the Linux kernel. We show how BBR is integrated into the MP-DCCP multi-access framework and evaluate its performance over both single and multi-path environments. Our evaluation results show that BBR improves the performance compared to CCID2 for multi-path scenarios due to the faster response to changes in the available bandwidth, which reduces latency and increases performance, especially for unreliable traffic. the MP-DCCP framework code, including the new CCID5 is available as OpenSource.
Stability of Cosmological Solution in f(R) Models of Gravity
Creators: name: Sawicki, Ignacy
name: Hu, Wayne
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We reconcile seemingly conflicting statements in the literature about the behavior of cosmological solutions in modified theories of gravity where the Einstein-Hilbert Lagrangian for gravity is modified by the addition of a function of the Ricci scalar, f(R). Using the example of f(R) = +/-μ^4/R we show that only such choices of f(R) where d^2f/dR^2>0 have stable high-curvature limits and well-behaved cosmological solutions with a proper era of matter domination. The remaining models enter a phase dominated by both matter and scalar kinetic energy where the scalar curvature remains low.
description: 4 pages, 2 figures, v2 reflects version accepted for publication in PRD: minor typos fixed and references updated
Additional file 1 of Genome‑wide association study and genomic prediction for growth traits in yellow-plumage chicken using genotyping-by-sequencing
Creators: name: Yang, Ruifei
name: Xu, Zhenqiang
name: Wang, Qi
name: Zhu, Di
name: Bian, Cheng
name: Ren, Jiangli
name: Huang, Zhuolin
name: Zhu, Xiaoning
name: Tian, Zhixin
name: Wang, Yuzhe
name: Jiang, Ziqin
name: Zhao, Yiqiang
name: Zhang, Dexiang
name: Li, Ning
name: Hu, Xiaoxiang
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Figure S1. Phenotypic distribution of four traits in yellow-plumage chickens (males and females). The data present the phenotypic distribution of four growth traits according to males (left panel) and females (right panel). Figure S2. SNP density of 151,519 variants. The data present the SNP density of detected SNPs within 1-Mb windows. Figure S3. Principal component analysis (PCA) of birds. PCA of sequenced individuals, where the top two principal components were plotted. Figure S4. Study design for cross-validation. The discovery sets were randomly selected from 6359 birds; 1500 individuals were used for GWAS; and the remaining 4859 birds were used for predictive evaluation (ABLUP, GBLUP and GFBLUP models used for tenfold cross-validation), where the accuracy and inflation of prediction were averaged across all validation sets. Figure S5. QQ plots of the genome-wide association study of the four traits. The red dots represent SNPs that passed the significance level threshold (P-value < 3.30e−7). Figure S6. Trend line of genomic prediction accuracy and inflation based on different sizes of the reference population (500 to 5500). Three indicators were used for evaluation, namely (a) observed prediction accuracy, (b) theoretical prediction accuracy, and (c) prediction inflation. Figure S7. Trend line of genomic prediction accuracy and inflation. The line is based on the proportion of top SNPs removed based on the GWAS results. (a) Theoretical prediction accuracy, and (b) prediction inflation. Figure S8. Genome-wide distribution of the top 30% of SNPs. The distribution of SNPs is based on GWAS results overlapping in the tenfold validation analysis, where the number of overlapping SNPs was equal to 15,077, 14,460, 14,558, and 14,259 in the analysis of 42 DW, 84 DW, ADG, and FCR, respectively.
Symmetry and decoupling in multi Higgs models
Creators: name: Carrôlo, Sérgio
name: Romão, Jorge C.
name: Silva, João P.
name: Vazão, Francisco
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the scalar sector of the most general multi Higgs doublet model satisfying explicitly an exact symmetry. We prove that such a model will exhibit decoupling if and only if the vacuum also satisfies the same symmetry. This general property is also shown independently and explicitly for three Higgs doublet models, by considering in detail all symmetry-constrained models and their possible vacua. We also discuss some specific characteristics of different decoupling patterns.
description: 12 pages
Analysis of the $Σ-n $ form factors with light-cone QCD sum rules
Creators: name: Wang, Z. G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work, we study the four form-factors $f_1(Q^2)$, $f_2(Q^2)$, $g_1(Q^2)$ and $g_2(Q^2)$ of the $Σ\to n$ in the framework of the light-cone QCD sum rules approach up to twist-6 three valence quark light-cone distribution amplitudes. The $f_1(0)$ is the basic input parameter in extracting the CKM matrix element $|V_{us}|$ from the hyperon decays. The four form-factors $f_1(Q^2)$, $f_2(Q^2)$, $g_1(Q^2)$ and $g_2(Q^2)$ at intermediate and large momentum transfers with $Q^2> 3 GeV^2$ have significant contributions from the end-point (soft) terms. The numerical values of the four form-factors $f_1(0)$, $f_2(0)$, $g_1(0)$ and $g_2(0)$ are compatible with the experimental data and theoretical calculations (in magnitude); although the uncertainties are large.
description: 16 pages, 4 figures, second version, typos corrected, the article is published in "J. Phys. G34 (2007) 493-504" not in "J. Phys. G34 (2007) 335-346"
Παρασκευή συμπυκνωμένου κολλοειδούς διαλύματος Νανοσωματιδίων Αργύρου (Ag)
Creators: name: Λίλη, Ελευθερία Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Νανοσωματίδια Αργύρου Ag
Φυγοκέντρηση
Αγώγιμο μελάνι
Νanoparticles Ag
Centrifugation
Conductive ink

description: Σκοπός της παρούσας εργασίας ήταν η συμπύκνωση νανοσωματηδίων αργύρου μέσω μία σχετικά απλής μεθόδου (μηχανική φυγοκέντριση) η οποία δεν έχει χρησιμοποιηθεί ιδιαίτερα μέχρι τώρα και παρουσιάζει ιδιαίτερο ενδιαφέρον. Μελετήθηκε λοιπόν πολύπλευρα η συμπύκνωση νανοσωματηδίων Ag, με απώτερο σκοπό τη χρησιμοποίησή τους ως μελάνη σε εκτυπωτικές μηχανές. Έγινε μία εκτεταμένη μελέτη διαλυμάτων που περιέχουν νανοσωματίδια αργύρου και προσπάθεια συμπύκνωσης και υπέρ-συμπύκνωσης ενός από αυτά. Τα δείγματα, η διαδικασία που ακολουθήθηκε, καθώς και τα αποτελέσματα, παρουσιάσθηκαν στην εργασία εκτενώς. Από το μεγάλο πλήθος των φυγοκεντρίσεων που πραγματοποιήθηκαν για πολλούς συνδυασμούς στροφών φυγοκέντρισης και χρόνου, οδηγηθήκαμε σε έναν αποδοτικό συνδυασμό, και για τις συγκεκριμένες τιμές προχωρήσαμε σε περαιτέρω συμπύκνωση. Επιτεύχθηκε λοιπόν, ο σκοπός της συμπύκνωσης και το Εργαστήριο Μεταλλογνωσίας βρίσκεται σε συνεννόηση με εξειδικευμένο εργαστήριο, προκειμένου να δοκιμαστεί το υπέρ-συμπυκνωμένο προϊόν που προέκυψε, σε εκτύπωση.
description: The purpose of this study was to condense silver nanoparticles through a relatively simple method (mechanical centrifugation) which has not been used so far up to know and is of particular interest. So the condensation of silver nanoparticles Ag has been studied in many ways, with a view to their use as ink in printing machines. There was a major study of solutions containing silver nanoparticles and compacting effort and super condensing one of them. The samples, the procedure followed and the results were presented at this work extensively. After an important number of centrifugations which made in many combinations of centrifugation speed and time, we arrived at an efficient combination. Finally, the main purpose of condensation achieved, and the Physical Metallurgy Laboratory (PML) is in agreement with a specialized laboratory to test the super-concentrated product obtained in printing.