cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Global magnetohydrodynamical models of turbulence in protoplanetary disks I. A cylindrical potential on a Cartesian grid and transport of solids
Creators: name: Lyra, W.
name: Johansen, A.
name: Klahr, H.
name: Piskunov, N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present global 3D MHD simulations of disks of gas and solids, aiming at developing models that can be used to study various scenarios of planet formation and planet-disk interaction in turbulent accretion disks. A second goal is to show that Cartesian codes are comparable to cylindrical and spherical ones in handling the magnetohydrodynamics of the disk simulations, as the disk-in-a-box models presented here develop and sustain MHD turbulence. We investigate the dependence of the magnetorotational instability on disk scale height, finding evidence that the turbulence generated by the magnetorotational instability grows with thermal pressure. The turbulent stresses depend on the thermal pressure obeying a power law of 0.24+/-0.03, compatible with the value of 0.25 found in shearing box calculations. The ratio of stresses decreased with increasing temperature. We also study the dynamics of boulders in the hydromagnetic turbulence. The vertical turbulent diffusion of the embedded boulders is comparable to the turbulent viscosity of the flow. Significant overdensities arise in the solid component as boulders concentrate in high pressure regions.
description: Changes after peer review process
Machine learning for detection of stenoses and aneurysms: application in a physiologically realistic virtual patient database
Creators: name: Jones, Gareth
name: Parr, Jim
name: Nithiarasu, Perumal
name: Pant, Sanjay
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Medical Physics (physics.med-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: This study presents an application of machine learning (ML) methods for detecting the presence of stenoses and aneurysms in the human arterial system. Four major forms of arterial disease -- carotid artery stenosis (CAS), subclavian artery stenosis (SAC), peripheral arterial disease (PAD), and abdominal aortic aneurysms (AAA) -- are considered. The ML methods are trained and tested on a physiologically realistic virtual patient database (VPD) containing 28,868 healthy subjects, which is adapted from the authors previous work and augmented to include the four disease forms. Six ML methods -- Naive Bayes, Logistic Regression, Support Vector Machine, Multi-layer Perceptron, Random Forests, and Gradient Boosting -- are compared with respect to classification accuracies and it is found that the tree-based methods of Random Forest and Gradient Boosting outperform other approaches. The performance of ML methods is quantified through the F1 score and computation of sensitivities and specificities. When using all the six measurements, it is found that maximum F1 scores larger than 0.9 are achieved for CAS and PAD, larger than 0.85 for SAS, and larger than 0.98 for both low- and high-severity AAAs. Corresponding sensitivities and specificities are larger than 90% for CAS and PAD, larger than 85% for SAS, and larger than 98% for both low- and high-severity AAAs. When reducing the number of measurements, it is found that the performance is degraded by less than 5% when three measurements are used, and less than 10% when only two measurements are used for classification. For AAA, it is shown that F1 scores larger than 0.85 and corresponding sensitivities and specificities larger than 85% are achievable when using only a single measurement. The results are encouraging to pursue AAA monitoring and screening through wearable devices which can reliably measure pressure or flow-rates
description: Changelog: Added a bullet point in the discussion (end of section 3.3)
Η οικογένεια στα σχολικά εγχειρίδια των Κειμένων Λογοτεχνίας του Γυμνασίου: Χριστιανικοπαιδαγωγική Θεώρηση
Creators: name: Μπακογλίδου, Τριανταφυλλιά Δ,
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Οικογένεια
Γονείς-παιδιά
Διαπαιδαγώγηση παιδιών
Family
Parents-children
Educating children

description: Σκοπός της διατριβής ήταν η μελέτη του θεσμού της οικογένειας, τις μορφές της, τις λειτουργίες της, αλλά και τις επιδράσεις της στον άνθρωπο. Εξετάσαμε τον όρο οικογένεια, τη δομή και τις λειτουργίας αυτής. Επίσης, παρουσιάσαμε τις μορφές της οικογένειας στο χρόνο καθώς έγινε η κατηγοριοποίηση των μορφών αυτών αποσαφηνίζοντας τα μέλη το κάθε ένα ξεχωριστά. Ακόμη, μελετήθηκε η οικογένεια στη διδασκαλία και τη ζωή της ορθόδοξης καθολικής εκκλησίας. Παρουσιάστηκε η οικογένεια από τη Παλαιά Διαθήκη μέχρι την Καινή Διαθήκη. Ακόμη, καταγράφηκε η ψυχοπαιδαγωγική θεώρηση της οικογένειας ως φορέα διαπαιδαγώγησης των παιδιών. Στη συνέχεια, μελετήθηκαν τα προγράμματα σπουδών και τα σχολικά εγχειρίδια του γυμνασίου του μαθήματος Κείμενα Νεοελληνικής Λογοτεχνίας. Καταγράφηκε ο σκοπός της διδασκαλίας της λογοτεχνίας και μέσω τον προγραμμάτων αυτών προβλήθηκε η έννοια της οικογένειας μέσα από τα σχολικά εγχειρίδια στα οποία εντοπίζεται ο όρος. Τέλος στο δεύτερο μέρος της διατριβής προβλήθηκε η η έρευνα, η οποία αφορά στα τα σχολικά εγχειρίδια του Γυμνασίου των Κειμένων Νεοελληνικής Λογοτεχνίας.
description: The purpose of the dissertation was to study the institution of the family, its forms, its functions, but also its effects on humans. We examined the term family, its structure and its functions. We also presented the forms of the family over time as these forms were categorized by clarifying the members individually. The family was also studied in the teaching and life of the Orthodox Catholic Church. The family was introduced from the Old Testament to the New Testament. Furthermore, the psycho-pedagogical view of the family as a body of education of the children was recorded. Then, the curricula and textbooks of the high school of the course Texts of Modern Greek Literature were studied. The purpose of teaching literature was recorded and through these programs the concept of family was promoted through the textbooks in which the term is found. Finally, in the second part of the dissertation, the research was presented, which concerns the textbooks of the High School of Texts of Modern Greek Literature.
Isolation of a bis(silyl)palladium complex and Si-Si bond formation on a mononuclear palladium complex
Creators: name: Su, Yan Rong
name: Wei Liu, Jia
name: Ju, Fei Fei
name: Xu, Jing Wen
name: Lu, Qing
name: Xiao, Kang
name: Wang, Shi
name: Li, Yong Hua
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer

description: Treatment of a chelating silane 1-(dimethylsilyl)-2-silylbenzene (4) with Pd(PEt3)4 in the ratio of 2:1 selectively afforded a unique mononuclear palladium complex [{1,2-C6H4(SiMe2)(SiH)}2Pd(PEt3)2] (6), which was formed by two Si-Si coupling reactions between the SiH2 groups and the SiMe2 moieties from two hydrosilane ligands. Complex 6 was structurally characterized by single crystal X-ray analysis and multinuclear NMR spectroscopic studies and is one of the very few examples of cis-bis(silyl)palladium(II) complexes containing in situ formed Si-Si single bonds.
Reconstruction of nuclear charged fragment trajectories from a large gap sweeper magnet
Creators: name: Frank, N.
name: Schiller, A.
name: Bazin, D.
name: Peters, W. A.
name: Thoennessen, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A new method to reconstruct charged fragment four-momentum vectors from measured trajectories behind an open, large gap, magnetic dispersion element (a sweeper magnet) has been developed. In addition to the position and angle behind the magnet it includes the position measurement in the dispersive direction at the target. The method improves the energy and angle resolution of the reconstruction significantly for experiments with fast rare isotopes, where the beam size at the target position is large.
description: 13 pages, 5 figures, accepted for publication in Nucl. Instrum. Meth. A
title: Spawning Of The Barents Sea/Norwegian Sea Greenland Halibut (Reinhardtius Hippoglossoides)
Creators: name: Albert, O.T.
name: Nilssen, E.M.
name: A.Stene
name: A.C.Gundersen
name: Nedreaas, K.H.
Publisher: name: ASC 1998 - O
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.Based on eight trawl surveys of the spawning area along the continental slope between North­Norway and Svalbard, the paper gives a preliminary description of the spawning time and spawning area of Greenland halibut (Reinhardtius hippoglossoides W albaum). Spawning started in November, peaked in December and ended in late January. Mature fish arrived to the spawning area in early autumn and left during the first months of the year. Spawning occurred between 500 and 800 min waters of approx. 2°C. All length groups spawned within the sameperiod;though running males were recorded within a wider range, both bathymetrical, latitudinal and temporal. Different maturity classes were identified with frequency analyses of the Gonadosomatic Index. First-time spawners may possibly be identified more than one year before spawning. Eggs were found.pelagically in December and January, probably at depth below 400m. This is the first time ever that eggs of this stock were found in the sea. Although the spawning season in this area was well defined other observations showed that spawning also occured half a year later in nearby areas, thus underlining the dichotomy in the literature as the spawning time of this stock.
Four new phenolic glycosides from Dobinea delavayi
Creators: name: Wu, Xiu-Rong
name: Lang, Li-Juan
name: Shen, Yi
name: Dong, Xiang
name: Xiao, Chao-Jiang
name: Jiang, Bei
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Three new benzophenone glycosides, 2-O-β-D-glucopyranosyl-6,3',4'-trihydroxy-4-methoxybenzophenone (1), 4'-O-β-D-glucopyranosyl-2,4,6,3'-tetramethoxybenzophenone (2) and 2-O-β-D-glucopyranosyl-4'-hydroxy-6-methylbenzophenone (3), and a new flavonoid glycoside 5'-hydroxyombuoside (6), along with three known phenolic glycosides 4-O-β-D-glucopyranosyl-2,6,4'-trihydroxybenzophenone (4), mangiferin (5), and ombuoside (7), were isolated from the 80% ethanol extract of roots of Dobinea delavayi. Their structures were determined by the comprehensive analyses of the physicochemical properties and spectroscopic data (1D NMR, 2D NMR, and HR-ESI-MS). Cytotoxicity and in vitro antimalarial activity of compounds 1, 3, 4, 6, and 7 were evaluated by MTT colorimetric assay and β-hematin formation inhibition assay, respectively.
Η ανάλυση DNA στο ελληνικό και ευρωπαϊκό δικονομικό δίκαιο
Creators: name: Ορφανός, Σάββας Μ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Ανάλυση DNA
Άρθρο 201 Κώδικα Ποινικής Δικονομίας
Ευρωπαϊκή Σύμβαση για τα Δικαιώματα του Ανθρώπου
Ευρωπαϊκό Δικαστήριο για τα Δικαιώματα του Ανθρώπου
DNA Analysis
Article 201 of the Criminal Procedure Code
European Convention on Human Rights
European Court of Human Rights

description: H συγκεκριμένη διδακτορική διατριβή ασχολείται εις βάθος με τη δογματική προβληματική της «Ανάλυσης DNA στο ελληνικό και ευρωπαϊκό δικονομικό δίκαιο». Έτσι, πρωταρχικός στόχος του συγκεκριμένου βιβλίου είναι η κατανόηση της επιστημονικής έννοιας του DNA, της σημασίας της Ανάλυσης DNA για το σύνολο της ποινικής διαδικασίας, η κριτική προσέγγιση σημαντικών πτυχών που σχετίζονται με την Ανάλυση DNA στο Ελληνικό και Ευρωπαϊκό Δικονομικό Δίκαιο, η σύγκριση μεταξύ του Ελληνικού Ποινικού Δικονομικού Δικαίου και των διαφορετικών νομικών συστημάτων όσον αφορά αυτό το πεδίο, και η εξαγωγή ορισμένων γενικότερων συμπερασμάτων σχετικά με αυτό το πολύ σημαντικό ζήτημα, αλλά και άλλα σημαντικά προβλήματα εξετάζονται λεπτομερώς σε αυτό το βιβλίο. Επιπλέον, εντοπίζονται θεμελιώδη νομολογιακά και θεωρητικά ζητήματα, τα οποία αφορούν πρωτίστως τις προϋποθέσεις διεξαγωγής της ανάλυσης DNA, τους σοβαρούς κινδύνους που ελλοχεύουν για τα θεμελιώδη δικαιώματα και τις ατομικές ελευθερίες, αλλά και πολλά άλλα κρίσιμα ζητήματα.
description: The specific doctoral thesis deals in depth with the doctrinal problem of ‘The DNA Analysis in the Greek and the European Procedural Law’. Thus, the primary aim of this specific book is the understanding of the scientific concept of DNA, the importance of DNA Analysis for the entire criminal proceedings, the critical approach of significant aspects relating to the DNA Analysis in the Greek and the European Procedural Law, the comparison between the Greek Criminal Procedure Law and different legal systems regarding in this field and drawing some general conclusions about this significant issue, but also other important problems are examined in detail in this book. In addition, critical jurisprudential and theoretical problems are detected, which concern primarily the conditions of conducting DNA Analysis, the serious dangers that lurk on fundamental rights and individual freedoms, but also many other crucial issues.
How to optimize the absorption of two entangled photons
Creators: name: Carnio, Edoardo G
name: Buchleitner, Andreas
name: Schlawin, Frank
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate how entanglement can enhance two-photon absorption in a three-level system. First, we employ the Schmidt decomposition to determine the entanglement properties of the optimal two-photon state to drive such a transition, and the maximum enhancement which can be achieved in comparison to the optimal classical pulse. We then adapt the optimization problem to realistic experimental constraints, where photon pairs from a down-conversion source are manipulated by local operations such as spatial light modulators. We derive optimal pulse shaping functions to enhance the absorption efficiency, and compare the maximal enhancement achievable by entanglement to the yield of optimally shaped, separable pulses.
description: 25 pages, 8 figures
The late-type stellar content of NGC 2403
Creators: name: Hudon, J. Dan
Publisher: name: University of British Columbia
Year: 2010

description: We have examined the late-type stellar content of 3 disk fields of NGC 2403 using VRI CCD photometry. The AGB luminosity function has been constructed and differs strongly with that of the LMC. Notably, even fewer bright AGB stars are seen in NGC 2403 than in the LMC. The shape of the AGB luminosity function for the innermost field, however, indicates that a recent burst of star formation may have occurred. Red and blue supergiants and HII regions are also identified in the field to support this. The relative distance modulus between NGC 2403 and the LMC is derived to be 8.90 and the true distance modulus to NGC 2403 is (m - M)₀ = 27.40 ± 0.24. The carbon to M star number for the innermost field is 8/17 which corresponds to [Fe/H] = -0.35.
High Energy Activity of the Super-Massive Black Hole at the Galactic Center
Creators: name: Goldwurm, Andrea
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The centre of our galaxy hosts the nearest super-massive black hole to the solar system, identified to the compact radio source Sgr A*. High energy experiments have tried in the past to detect the X/gamma-ray emission expected from the accretion of the surrounding material into this super-massive black hole. Only recently however, thanks to the new generation of telescopes, it has been possible to reveal high energy radiation associated with Sgr A* or its close environment. I will review and discuss in particular the results on the Sgr A* X-ray flares discovered with Chandra and XMM-Newton, on the central soft gamma-ray source detected with INTEGRAL and on the galactic centre TeV emission revealed by HESS.
description: 10 pages, 6 figures. Published in Comptes Rendus Physique, Volume 8, Issue 1, January 2007, Pages 35-44, "Observation of black holes and extreme gravitational events", Academie des Sciences, Elsevier Science. Available online 2 February 2007
Η δεύτερη χρήση κιονοκράνων στην Ελλάδα από την ύστερη αρχαιότητα έως τον πρώιμο μεσαίωνα
Creators: name: Ασημακόπουλος, Δημήτριος Γ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Βυζαντινή αρχιτεκτονική γλυπτική
Δεύτερη χρήση
Κιονόκρανα
Σπόλια
Byzantine architectural sculpture
Second use
Column capitals
Spolia

description: Η διατριβή πραγματεύεται την επαναχρησιμοποίηση παλαιών αρχιτεκτονικών μελών με λειτουργία κιονοκράνου (δηλ. κιονόκρανα, βάσεις κιόνων, επιθήματα, επίκρανα, αμφικιονόκρανα και πλακοειδείς άβακες) στην Ελλάδα από τις αρχές του 4ου έως τα τέλη του 10ου αιώνος. Στον κατάλογο, συζητούνται αναλυτικά 100 επιλεγμένα μνημεία τα οποία καλύπτουν ολόκληρο το εξεταζόμενο γεωγραφικό και χρονολογικό πλαίσιο. Οι συζητήσεις περιλαμβάνουν παρατηρήσεις γύρω από την οικοδομική ιστορία των κτιρίων, την τεκμηρίωση των αρχιτεκτονικών τους μελών και την ερμηνεία της δεύτερης χρήσης στο πλαίσιο των αρχιτεκτονικών συνθέσεων. Στο συνθετικό μέρος, ανιχνεύεται η συμπεριφορά της βυζαντινής κοινωνίας απέναντι στα σπόλια, εξετάζοντας τα λογικά βήματα που μεσολαβούσαν από την επιθυμία ως την εφαρμογή τους σε καινούριες οικοδομές. Διαπιστώνεται ότι οι μεταβολές των σχέσεων παραγωγής οδήγησαν σε αναθεώρηση της έννοιας του ρυθμού και συνετέλεσαν στη διαμόρφωση ιδεολογικών συστημάτων γύρω από το ελληνορωμαϊκό παρελθόν, παράλληλα με αναπροσαρμογές του νομικού πλαισίου και των μεθόδων της οικοδομικής τέχνης στις τρέχουσες ανάγκες.
description: The dissertation treats the use of spolia capitals (i.e. reused column capitals or column bases, imposts, pier caps and abaci functioning as capitals) in the territories of modern Greece from c. 300 to 1000. Within a critical catalogue, 100 selected monuments are discussed. The discussions focus on the building history of the monuments, the documentation of their architectural members and the interpretation of re-use in architectural compositions. The text composes the results of the foresaid analysis, in order to examine the byzantine attitude towards spolia and interpret the logical steps that mediated from the desire of antiquities to their application in new building projects. It is argued that changes in relations of production led to a revision of the concept of architectural orders and contributed to the formation of ideological systems around the Greco-Roman past, while, at the same time, the legal framework and the methods of building were being adapted to current needs.
Ly-alpha Emission-Line Galaxies at z = 3.1 in the Extended Chandra Deep Field South
Creators: name: Gronwall, C.
name: Ciardullo, R.
name: Hickey, T.
name: Gawaiser, E.
name: Feldmeier, J. J.
name: van Dokkum, P. G.
name: Urry, C. M.
name: Herrera, D.
name: Lehmer, B. D.
name: Infante, L.
name: Orsi, A.
name: Marchesini, D.
name: Blanc, G. A.
name: Francke, H.
name: Lira, P.
name: Treister, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe the results of an extremely deep, 0.28 deg^2 survey for z = 3.1 Ly-alpha emission-line galaxies in the Extended Chandra Deep Field South. By using a narrow-band 5000 Anstrom filter and complementary broadband photometry from the MUSYC survey, we identify a statistically complete sample of 162 galaxies with monochromatic fluxes brighter than 1.5 x 10^-17 ergs cm^-2 s^-1 and observers frame equivalent widths greater than 80 Angstroms. We show that the equivalent width distribution of these objects follows an exponential with a rest-frame scale length of w_0 = 76 +/- 10 Angstroms. In addition, we show that in the emission line, the luminosity function of Ly-alpha galaxies has a faint-end power-law slope of alpha = -1.49 +/- 0.4, a bright-end cutoff of log L^* = 42.64 +/- 0.2, and a space density above our detection thresholds of 1.46 +/- 0.12 x 10^-3 h70^3 galaxies Mpc^-3. Finally, by comparing the emission-line and continuum properties of the LAEs, we show that the star-formation rates derived from Ly-alpha are ~3 times lower than those inferred from the rest-frame UV continuum. We use this offset to deduce the existence of a small amount of internal extinction within the host galaxies. This extinction, coupled with the lack of extremely-high equivalent width emitters, argues that these galaxies are not primordial Pop III objects, though they are young and relatively chemically unevolved.
description: 45 pages, 15 figures, accepted for publication in the Astrophysical Journal
ANN-aided incremental multiscale-remodelling-based finite strain poroelasticity
Creators: name: Dehghani, Hamidreza
name: Zilian, Andreas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: Mechanical modelling of poroelastic media under finite strain is usually carried out via phenomenological models neglecting complex micro-macro scales interdependency. One reason is that the mathematical two-scale analysis is only straightforward assuming infinitesimal strain theory. Exploiting the potential of ANNs for fast and reliable upscaling and localisation procedures, we propose an incremental numerical approach that considers rearrangement of the cell properties based on its current deformation, which leads to the remodelling of the macroscopic model after each time increment. This computational framework is valid for finite strain and large deformation problems while it ensures infinitesimal strain increments within time steps. The full effects of the interdependency between the properties and response of macro and micro scales are considered for the first time providing more accurate predictive analysis of fluid-saturated porous media which is studied via a numerical consolidation example. Furthermore, the (nonlinear) deviation from Darcy's law is captured in fluid filtration numerical analyses. Finally, the brain tissue mechanical response under uniaxial cyclic test is simulated and studied.
The Breakthrough Listen Search For Intelligent Life Near the Galactic Center I
Creators: name: Gajjar, Vishal
name: Perez, Karen I.
name: Siemion, Andrew P. V.
name: Foster, Griffin
name: Brzycki, Bryan
name: Chatterjee, Shami
name: Chen, Yuhong
name: Cordes, James M.
name: Croft, Steve
name: Czech, Daniel
name: DeBoer, David
name: DeMarines, Julia
name: Drew, Jamie
name: Gowanlock, Michael
name: Isaacson, Howard
name: Lacki, Brian C.
name: Lebofsky, Matt
name: MacMahon, David H. E.
name: Morrison, Ian S.
name: Ng, Cherry
name: de Pater, Imke
name: Price, Danny C.
name: Sheikh, Sofia Z.
name: Suresh, Akshay
name: Webb, Claire
name: Worden, S. Pete
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: A line-of-sight towards the Galactic Center (GC) offers the largest number of potentially habitable systems of any direction in the sky. The Breakthrough Listen program is undertaking the most sensitive and deepest targeted SETI surveys towards the GC. Here, we outline our observing strategies with Robert C. Byrd Green Bank Telescope (GBT) and Parkes telescope to conduct 600 hours of deep observations across 0.7--93 GHz. We report preliminary results from our survey for ETI beacons across 1--8 GHz with 7.0 and 11.2 hours of observations with Parkes and GBT, respectively. With our narrowband drifting signal search, we were able to place meaningful constraints on ETI transmitters across 1--4 GHz and 3.9--8 GHz with EIRP limits of $\geq$4$\times$10$^{18}$ W among 60 million stars and $\geq$5$\times$10$^{17}$ W among half a million stars, respectively. For the first time, we were able to constrain the existence of artificially dispersed transient signals across 3.9--8 GHz with EIRP $\geq$1$\times$10$^{14}$ W/Hz with a repetition period $\leq$4.3 hours. We also searched our 11.2 hours of deep observations of the GC and its surrounding region for Fast Radio Burst-like magnetars with the DM up to 5000 pc cm$^{-3}$ with maximum pulse widths up to 90 ms at 6 GHz. We detected several hundred transient bursts from SGR J1745$-$2900, but did not detect any new transient burst with the peak luminosity limit across our observed band of $\geq$10$^{31}$ erg s$^{-1}$ and burst-rate of $\geq$0.23 burst-hr$^{-1}$. These limits are comparable to bright transient emission seen from other Galactic radio-loud magnetars, constraining their presence at the GC.
description: Accepted for publication in AJ
Scaled frequency-dependent transport in the mesoscopically phase-separated colossal magnetoresistive manganite La_{0.625-y}Pr_yCa_{0.375}MnO_3
Creators: name: Chaudhuri, S.
name: Budhani, R. C.
name: He, Jiaqing
name: Zhu, Yimei
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We address the issue of massive phase separation (PS) in manganite family of doped Mott insulators through ac conductivity measurements on La$_{0.625-y}$Pr$_{y}$Ca$_{0.375}$MnO$_{3}$ (0.375 $\leq$ y $\leq$ 0.275), and establish applicability of the scaling theory of percolation in the critical regime of the PS. Measurements of dc resistivity, magnetization (M(T)) and electron diffraction show incomplete growth of a ferromagnetic (FM) metallic component on cooling the high temperature charge ordered (CO) phase well below Curie temperature. The impedance $\mid$Z(T,f)$\mid$ measured over a frequency (f) range of 10 Hz to 10 MHz in the critical regime follows a universal scaling of the form $\approx$ R(T,0)g(f$ξ^{2+θ}$) with $θ$ $\approx$ 0.86 and the normalized correlation length varying from 1 to 4, suggesting anomalous diffusion of holes in percolating FM clusters.
description: 12 pages and 5 figures
title: Fecundity Of Greenland Halibut (Reinhardtius Hippoglossides Walbaum) In East Greenlandic Waters
Creators: name: Rønneberg, J. E.
name: Gundersen, A.C.
name: Boje, J.
Publisher: name: ASC 1998 - O
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.Studies on fish fecundity is of importance for understanding reproduction biology andrelations between spawning stock and recruitment. Fecundity is defmed as the number ofvitellogenic oocytes developing in a female prior to the spawning. For Greenland halibut inEast-Greenland waters fecundity has not been described so far.This paper describes a fecundity study on Greenland halibut in ICES area XIVb, EastGreenland,based on 112 ovaries collected in July 1997. The ovaries contained oocytes with avisual oocyte diameter of 1-2mm. Mean gonadosomatic index (GSI) was 2.9%, ranging from1.0% to 4.9%.Among the eggs in the ovary, a recruitment group in the connective tissue, small oocytes(mean egg diameter 0.73mm after preservation) and vitellogenic oocytes (mean egg diameter1.25mm after preservation, range 0.9 - 1.65mm) were observed. The fecundity estimates arebased on the vitellogenic oocytes in the last group.Mean fecundity was estimated to 113 700 eggs, the number of eggs per female, ranging from32500 to 277 100. The fecundity-length and fecundity-weight (F-W) relationships have beenestimated.
Dissipation in Mesoscopic Superconductors with Ac Magnetic Fields
Creators: name: Hernández, A. D.
name: Arés, O.
name: Hart, C.
name: Domínguez, D.
name: Pastoriza, H.
name: Butera, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The response of mesoscopic superconductors to an ac magnetic field is investigated both experimentally and with numerical simulations. We study small square samples with dimensions of the order of the penetration depth. We obtain the ac susceptibitity $χ=χ'+iχ''$ at microwave frequencies as a function of the dc magnetic field $H_{dc}$. We find that the dissipation, given by $χ''$, has a non monotonous behavior in mesoscopic samples. In the numerical simulations we obtain that the dissipation increases before the penetration of vortices and then it decreases abruptly after vortices have entered the sample. This is verified experimentally, where we find that $χ''$ has strong oscillations as a function of $H_{dc}$ in small squares of Pb.
description: 4 pages, 2 figures
title: Early Development Of Northeast Arctic Greenland Halibut (Reinhardtius Hippoglossoides)
Creators: name: Stene, Anne
name: Gundersen, Agnes C.
name: Albert, Ole T.
name: Solemdal, Per
name: Nedreaas, Kjell H.
Publisher: name: ASC 1998 - O
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.The early development of the Greenland halibut (Reinhardtius hippoglossoides) has never been described in detail. This study contains some preliminary notes on the egg development of the Northeast Arctic Greenland halibut Buoyancy and morphometric characteristics are compared with field sampled eggs, in order to identify these to species. The eggs in the ovary of ripening females were large (about 4 mm), transparent, almost equal in size and stuck to the walls of the ovary. In ripe, artificially spawned females the ovulated eggs were all easily released in one batch. This may indicate that Greenland halibut has a comparatively long period between each egg batch delivered. Artificially spawned eggs of the Greenland halibut were 3.3 -4.2 mm and had neutral buoyancy in seawater of ca 33 °/00 during the first four days of development. During gastrulation the egg density increased until closure of blastopore. Eggs from field surveys had neutral buoyancy in seawater densities near 1.0279 g/cm3. This density is found at depths around 650 meters (34.9 °/oo S and 1.8° C) in the spawning area.The eggs hatched after nearly two months incubation. The embryo seems to hatch at an apparently premature stage.
Studies of c-type RR Lyrae stars
Creators: name: Mendes De Oliveira, Cláudia Lúcia
Publisher: name: University of British Columbia
Year: 2010

description: Three studies of c-type RR Lyrae stars in the field of the Galaxy and in the Ursa Minor dwarf spheroidal galaxy have been completed. They include a study of the secular period behaviour of the star RU Psc; a determination of new radial velocities for 28 field c-type RR Lyrae stars; and a study of seven variables in the Ursa Minor dwarf galaxy, five of which are c-type RR Lyrae stars. RU Psc (period P=0[sup d].3904) is known for irregular cycle-to-cycle brightness variations and a possible 28 day Blazhko period (Tremko 1964). Using data from the literature, from 1956 to 1984, the long period behaviour of the star was analysed and, in particular, the possibility of RU Psc being a double-mode star was investigated. It is concluded that the peculiarities seen in the photometry of RU Psc are not due to secondary oscillations of the sort seen in RRd stars. Radial velocities for 20 field c-type RR Lyrae stars, whose radial velocities previously were unknown, are presented. The typical uncertainties are ± 15 km/s. Seven variable stars in the Ursa Minor dwarf galaxy have been studied using new photometry from 38 CCD frames. Combining these data with photographic photometry from van Agt (1967, 1968), and new photographic data from Nemec, Wehlau and Mendes de Oliveira, (1988, hereafter NWO), very accurate periods and colours were derived for these seven variables. With accurate mean colours, the blue and red edges of the instability strip could be set with little uncertainty. A distance modulus of (ra — M)[sub o]=19.23 ± 0.27 was derived for Ursa Minor from the mean magnitude of the c-type RR Lyrae stars. Analysing the new photographic data (NWO), four new anomalous Cepheids were found in Ursa Minor bringing to seven the total number of anomalous Cepheids now known. None of the c-type RR Lyrae stars in Ursa Minor, for which sufficient data are available, was found to be a double-mode RR Lyrae star.
title: Correlated Signatures of Gravitational-wave and Neutrino Emission in Three-dimensional General-relativistic Core-collapse Supernova Simulations
Creators: name: Kuroda, Takami
name: Kotake, Kei
name: Hayama, Kazuhiro
name: Takiwaki, Tomoya
Publisher: name: The American Astronomical Society
Year: 2024

description: We present results from general-relativistic (GR) three-dimensional (3D) core-collapse simulations with approximate neutrino transport for three nonrotating progenitors (11.2, 15, and 40 M⊙) using different nuclear equations of state (EOSs). We find that the combination of progenitor’s higher compactness at bounce and the use of softer EOS leads to stronger activity of the standing accretion shock instability (SASI). We confirm previous predications that the SASI produces characteristic time modulations both in neutrino and gravitational-wave (GW) signals. By performing a correlation analysis of the SASI-modulated neutrino and GW signals, we find that the correlation becomes highest when we take into account the time-delay effect due to the advection of material from the neutrino sphere to the proto-neutron star core surface. Our results suggest that the correlation of the neutrino and GW signals, if detected, would provide a new signature of the vigorous SASI activity in the supernova core, which can be hardly seen if neutrino-convection dominates over the SASI.
An Unsupervised Optical Flow Estimation For LiDAR Image Sequences
Creators: name: Guo, Xuezhou
name: Lin, Xuhu
name: Zhao, Lili
name: Zhu, Zezhi
name: Chen, Jianwen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In recent years, the LiDAR images, as a 2D compact representation of 3D LiDAR point clouds, are widely applied in various tasks, e.g., 3D semantic segmentation, LiDAR point cloud compression (PCC). Among these works, the optical flow estimation for LiDAR image sequences has become a key issue, especially for the motion estimation of the inter prediction in PCC. However, the existing optical flow estimation models are likely to be unreliable for LiDAR images. In this work, we first propose a light-weight flow estimation model for LiDAR image sequences. The key novelty of our method lies in two aspects. One is that for the different characteristics (with the spatial-variation feature distribution) of the LiDAR images w.r.t. the normal color images, we introduce the attention mechanism into our model to improve the quality of the estimated flow. The other one is that to tackle the lack of large-scale LiDAR-image annotations, we present an unsupervised method, which directly minimizes the inconsistency between the reference image and the reconstructed image based on the estimated optical flow. Extensive experimental results have shown that our proposed model outperforms other mainstream models on the KITTI dataset, with much fewer parameters.
description: Accepted by ICIP2021
title: Gamaliel Churata. Interpelaciones al excepcionalismo de los saberes universales desde una concepción ambiciosamente crítica del pensamiento humano
Creators: name: Monasterios Pérez, Elizabeth
Publisher: name: UNICApress
Year: 2020

description: Con Gamaliel Churata Interpelaciones al excepcionalismo de los saberes universales desde una concepción ambiciosamente crítica del pensamiento humano, se inauguran las publicaciones de América Crítica. Churata es un autor que, desde un lugar de enunciación silenciado por los procesos de formación de la modernidad occidental como el altiplano andino, abre y seguirá abriendo nuevas rutas interpretativas desde perspectivas inéditas. Ya está “dialogando con los distintos giros que ha tomado la crítica y la teoría cultural de las últimas décadas”, como demuestra Elizabeth Monasterios en su ensayo introductorio y nuevas generaciones de críticos de la literatura y de la cultura latinoamericana se están formando con el estudio de su obra. El libro que recoge las intervenciones del Simposio Internacional “Gamaliel Churata: envisioning the circulation of andean epistemologies in the age of globalization”, realizado en la Universidad de Pittsburgh en 2016, señala un importante momento de pasaje en los estudios sobre el autor en que emerge como reto: “la urgencia de impulsar el estudio de los manuscritos inéditos y de reflexionar sobre el potencial teórico y conceptual que tiene su obra para contribuir, desde una epistemología andina, a debates actuales sobre los límites del humanismo ilustrado y la construcción de nuevas conciencias ontológicas.”
description: Con Gamaliel Churata. Interpelaciones al excepcionalismo de los saberes universales desde una concepción ambiciosamente crítica del pensamiento humano si inaugurano le pubblicazioni di América Crítica. Churata è un autore che, da un luogo di enunciazione rimosso dai processi di formazione della modernità occidentale come l’altipiano andino, apre e continuerà ad aprire nuovi percorsi interpretativi a partire da prospettive inedite. “dialoga con le varie svolte intraprese dalla critica e dalla teoria culturale degli ultimi decenni” come dimostra Elizabeth Monasterios nell’introduzione e nuove generazioni di critici della letteratura e della cultura latinoamericana si stanno formando con lo studio della sua opera. Il libro che raccoglie i lavori del Convegno Internazionale “Gamaliel Churata: envisioning the circulation of andean epistemologies in the age of globalization”, realizzato presso l’Università di Pittsburgh nel 2016, segna un momento di passaggio negli studi sull’autore da cui emerge come sfifa:”L’urgenza di pubblicare i manoscritti inediti e di riflettere sul potenziale teorico e concettuale della sua opera per contribuire, da un’epistemologia andina, al dibattito attuale, sull’umanesimo e la costruzione di nuove coscienze ontologiche”
Single π^- production in np collisions for excess energies up to 90 MeV
Creators: name: TOF Collaboration
name: Abdel-Bary, M.
name: Brinkmann, K. -Th.
name: Clement, H.
name: Doroshkevich, E.
name: Dshemuchadse, S.
name: Erhardt, A.
name: Eyrich, W.
name: Freiesleben, H.
name: Gillitzer, A.
name: Jäkel, R.
name: Karsch, L.
name: Kilian, K.
name: Kuhlmann, E.
name: Möller, K.
name: Morsch, H. P.
name: Naumann, L.
name: Paul, N.
name: Pizzolotto, C.
name: Ritman, J.
name: Roderburg, E.
name: Schroeder, W.
name: Schulte-Wissermann, M.
name: Sefzick, Th.
name: Teufel, A.
name: Ucar, A.
name: Wintz, P.
name: Wüstner, P.
name: Zupranski, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The quasifree reaction $np\to pp\pim$ was studied in a kinematically complete experiment by bombarding a liquid hydrogen target with a deuteron beam of momentum 1.85 GeV/c and analyzing the data along the lines of the spectator model. In addition to the three charged ejectiles the spectator proton was also detected in the large-acceptance time-of-flight spectrometer COSY-TOF. It was identified by its momentum and flight direction thus yielding access to the Fermi motion of the bound neutron and to the effective neutron 4-momentum vector $\mathbb{P}_n$ which differed from event to event. A range of almost 90 MeV excess energy above threshold was covered. Energy dependent angular distributions, invariant mass spectra as well as fully covered Dalitz plots were deduced. Sizeable $pp$ FSI effects were found as were contributions of $p$ and $d$ partial waves. The behavior of the elementary cross section $σ_{01}$ close to threshold is discussed in view of new cross section data. In comparison with existing literature data the results provide a sensitive test of the spectator model.
description: 21 pages, 9 figures, 4 tables, submitted to EPJA
Improving Intrinsic Decoherence in Multi-Quantum-Dot Charge Qubits
Creators: name: Hentschel, Martina
name: Valente, Diego C. B.
name: Mucciolo, Eduardo R.
name: Baranger, Harold U.
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 discuss decoherence in charge qubits formed by multiple lateral quantum dots in the framework of the spin-boson model and the Born-Markov approximation. We consider the intrinsic decoherence caused by the coupling to bulk phonon modes. Two distinct quantum dot configurations are studied: (i) Three quantum dots in a ring geometry with one excess electron in total and (ii) arrays of quantum dots where the computational basis states form multipole charge configurations. For the three-dot qubit, we demonstrate the possibility of performing one- and two-qubit operations by solely tuning gate voltages. Compared to the proposal by DiVincenzo {\it et al.} involving a linear three-dot spin qubit, the three-dot charge qubit allows for less overhead on two-qubit operations. For small interdot tunnel amplitudes, the three-dot qubits have $Q$ factors much higher than those obtained for double dot systems. The high-multipole dot configurations also show a substantial decrease in decoherence at low operation frequencies when compared to the double-dot qubit.
description: 11 pages, 6 figures, submitted to Phys. Rev. B
Stripe order in the doped Hubbard model on the honeycomb lattice
Creators: name: Yang, Xu
name: Zheng, Hao
name: Qin, Mingpu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study the ground state properties of the doped Hubbard model with strong interactions on honeycomb lattice by the Density Matrix Renormalization Group (DMRG) method. At half-filling, due to the absence of minus sign problem, it is now well established by large-scale Quantum Monte Carlo calculations that a Dirac semi-metal to anti-ferromagnetic Mott insulator transition occurs with the increase of the interaction strength $U$ for the Hubbard model on honeycomb lattice. However, an understanding of the fate of the anti-ferromagnetic Mott insulator when holes are doped into the system is still lacking. In this work, by calculating the local spin and charge density for width-4 cylinders with DMRG, we discover a half-filled stripe order in the doped Hubbard model on honeycomb lattice. We also perform complementary large-scale mean-field calculations with renormalized interaction strength. We observe half-filled stripe order and find stripe states with filling close to one half are nearly degenerate in energy.
description: close to the published version
title: Catch Rates And Hook And Bait Selectivity In Longline Fishery For Greenland Halffiut At East Greenland
Creators: name: Woll, Astrid K.
name: Boje, Jesper
name: Holst, Rene
name: Gundersen, Agnes C.
Publisher: name: ASC 1998 - O
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.A joint Norwegian-Greenland longline survey was conducted in East Greenland August 1997, using different hook types.
Unitary representation of the Poincaré group for classical relativistic dynamics
Creators: name: Manjarres, A. D. Bermúdez
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We give a unitary irreducible representation of the proper Poincaré group that leads to an operational version of the classical relativistic dynamics of a massive spinless particle. Unlike quantum mechanics, in this operational theory there is no uncertainty principle between position and momentum. It will be shown that the theory contains the Koopman-von Neumann formalism as a particular case, and a explicit connection with relativistic Hamiltonian mechanics will be given.
The variable radio-to-X-ray spectrum of the magnetar XTE J1810-197
Creators: name: Camilo, F.
name: Ransom, S. M.
name: Penalver, J.
name: Karastergiou, A.
name: van Kerkwijk, M. H.
name: Durant, M.
name: Halpern, J. P.
name: Reynolds, J.
name: Thum, C.
name: Helfand, D. J.
name: Zimmerman, N.
name: Cognard, I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have observed the 5.54s anomalous X-ray pulsar XTE J1810-197 at radio, millimeter, and infrared (IR) wavelengths, with the aim of learning about its broad-band spectrum. At the IRAM 30m telescope, we have detected the magnetar at 88 and 144GHz, the highest radio-frequency emission ever seen from a pulsar. At 88GHz we detected numerous individual pulses, with typical widths ~2ms and peak flux densities up to 45Jy. Together with nearly contemporaneous observations with the Parkes, Nancay, and Green Bank telescopes, we find that in late 2006 July the spectral index of the pulsar was -0.5
description: Accepted for publication in ApJ; contains improved discussion of infrared uncertainties