cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Moving frames and compatibility conditions for three-dimensional director fields
Creators: name: da Silva, Luiz C. B.
name: Efrati, Efi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The geometry and topology of the region in which a director field is embedded impose limitations on the kind of supported orientational order. These limitations manifest as compatibility conditions that relate the quantities describing the director field to the geometry of the embedding space. For example, in two dimensions (2D) the splay and bend fields suffice to determine a director uniquely (up to rigid motions) and must comply with one relation linear in the Gaussian curvature of the embedding manifold. In 3D there are additional local fields describing the director, i.e. fields available to a local observer residing within the material, and a number of distinct ways to yield geometric frustration. So far it was unknown how many such local fields are required to uniquely describe a 3D director field, nor what are the compatibility relations they must satisfy. In this work, we address these questions directly. We employ the method of moving frames to show that a director field is fully determined by five local fields. These fields are shown to be related to each other and to the curvature of the embedding space through six differential relations. As an application of our method, we characterize all uniform distortion director fields, i.e., directors for which all the local characterizing fields are constant in space, in manifolds of constant curvature. The classification of such phases has been recently provided for directors in Euclidean space, where the textures correspond to foliations of space by parallel congruent helices. For non-vanishing curvature, we show that the pure twist phase is the only solution in positively curved space, while in the hyperbolic space uniform distortion fields correspond to foliations of space by (non-necessarily parallel) congruent helices. Further analysis is expected to allow to also construct of new non-uniform director fields.
description: 22 pages, 2 figures. Keywords: Liquid crystal, Director field, Compatibility, Geometric frustration, Moving frame
Tunneling Hamiltonian analysis of DC Josephson currents in a weakly-interacting Bose-Einstein condensate
Creators: name: Uchino, Shun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Atomtronics experiments with ultracold atomic gases allow us to explore quantum transport phenomena of a weakly-interacting Bose-Einstein condensate (BEC). Here, we focus on two-terminal transport of such a BEC in the vicinity of zero temperature. By using the tunnel Hamiltonian and Bogoliubov theory, we obtain a DC Josephson current expression in the BEC and apply it to experimentally relevant situations such as quantum point contact and planar junction. Due to the absence of Andreev bound states but the presence of couplings associated with condensation elements, a current-phase relation in the BEC is found to be different from one in an s-wave superconductor. In addition, it turns out that the DC Josephson current in the BEC depends on the sign of tunneling elements, which allows to realize the so-called $π$ junction by using techniques of artificial gauge fields.
description: 15 pages, 2 figures
Διαχείριση ανοιχτών συνδεδεμένων δεδομένων στον Σημασιολογικό Ιστό
Creators: name: Τσιώτσου, Χριστίνα-Παρασκευή Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Συνδεδεμένα Δεδομένα
DB pedia
Σημασιολογικός Ιστός
Linked Data
Semantic Web

description: Η παρούσα εργασία πραγματοποιήθηκε στα πλαίσια του Διατμηματικού Προγράμματος Μεταπτυχιακών Σπουδών στην Πληροφορική και στην Διοίκηση του Αριστοτελείου Πανεπιστημίου Θεσσαλονίκης κατά την διάρκεια του Γ’ εξαμήνου του ακαδημαϊκού έτους 2017-2018. Θέμα της εργασίας είναι η διαχείριση των Συνδεδεμένων Δεδομένων στον Σημασιολογικό Ιστό. Πιο συγκεκριμένα, θα παρουσιαστεί σχεδιαστικά ο τρόπος με τον οποίο τα δεδομένα της DBpedia ταξινομούνται και πώς οι χρήστες μέσω της εφαρμογής μπορούν να επαληθεύσουν την εγκυρότητα των δεδομένων (βιβλιογραφικών αναφορών). Η DBpedia είναι μια κοινότητα που προσπαθεί να εξάγει δομημένο περιεχόμενο από τις πληροφορίες που δημιουργούνται σε διάφορα έργα της Wikimedia. Σκοπός της έρευνας είναι να δείξει με ποιόν τρόπο μπορεί το περιεχόμενο αυτό να διαχειριστεί, λόγω του μεγάλου όγκου πληροφοριών που υπάρχει στο Διαδίκτυο. Τέλος, η μελέτη παρέχει πληροφορίες για την χρήση του Διαδικτύου και για τις διάφορες γλώσσες προγραμματισμού που αφορούν τον Σημασιολογικό Ιστό.
description: The current thesis was carried out within the framework of the Postgraduate Program “Informatics and Management” of the Aristotle University of Thessaloniki during the third semester of the academic year 2017-2018. The subject of the thesis is the management of the Linked Data on the Semantic Web. In particular, the way in which DBpedia data are classified and how users through the designed application can verify the validity of the data (bibliographic references). DBpedia is a community that attempts to extract structured content from the information created in various Wikimedia projects. The purpose of the survey is to show how it can handle this content due to the large amount of information available on the Internet. Finally, the study provides information on the use of the Internet and the various programming languages for the Semantic Web.
Lasing in 15 atm CO2 cell optically pumped by a Fe:ZnSe laser
Creators: name: Tovey, Dana
name: Pigeon, Jeremy
name: Tochitsky, Sergei
name: Louwrens, Gerhard
name: Ben-Zvi, Ilan
name: Martyshkin, Dmitry
name: Fedorov, Vladimir
name: Karki, Krishna
name: Mirov, Sergei
name: Joshi, Chan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: 10 μm lasing is studied in a compact CO2-He cell pressurized up to 15 atm when optically pumped by a ~50 mJ Fe:ZnSe laser tunable around 4.3 μm. The optimal pump wavelength and partial pressure of CO2 for generating 10 μm pulses are found to be ~4.4 μm and 0.75 atm, respectively. Without cavity optimization, the optical-to-optical conversion efficiency reached ~10% at a total pressure of 7 atm. The gain lifetime is measured to be ~1 μs at pressures above 10 atm, indicating the feasibility of using high-pressure optically pumped CO2 for the efficient amplification of picosecond 10 μm pulses.
description: 10 pages, 8 figures
Φυσικό και γνωμικό θέλημα κατά τον Άγιο Μάξιμο τον Ομολογητή στο έργο ‘Ζήτησις μετά Πύρρου’
Creators: name: Αναγνωστόπουλος, Κωνσταντίνος Θωμά
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Φυσικό θέλημα
Γνωμικό θέλημα
Μάξιμος Ομολογητής
Natural Will
Deliberate Will
Maximus the Confessor

description: Σκοπός της μεταπτυχιακής εργασίας είναι η εξέταση των όρων φυσικό και γνωμικό θέλημα καθώς και η μεταξύ τους σχέση μέσα από το συγκεκριμένο έργο του Αγίου Μαξίμου. Αρχικά παρουσιάζεται το ιστορικό και θεολογικό υπόβαθρο από το οποίο δημιουργήθηκε η αίρεση του Μονοθελητισμού- Μονοενεργητισμού. Στην συνέχεια αναλύονται συγκεκριμένοι φιλοσοφικοί και θεολογικοί όροι που αποτελούν δομικά στοιχεία της θεολογίας του Αγίου Μαξίμου. Έπειτα παρουσιάζεται η ιστορική πορεία της θέλησης ως όρου από την αρχαιότητα έως την εποχή του Αγίου καθώς και η ορθόδοξη διδασκαλία περί φυσικού θελήματος. Στην συνέχεια δίνεται ο ορισμός του γνωμικού θελήματος και παρουσιάζονται οι λόγοι για τους οποίους ο Χριστός δεν έχει γνωμικό θέλημα. Ασχοληθήκαμε επιπλέον και με την σχέση που έχουν οι φυσικές Ενέργειες του Χριστού με τις φυσικές Θελήσεις καί τις δύο Φυσεις Του.
description: The aim of the present thesis is to examine the terms “natural” and “deliberate” will and the relationship between the two in the context of this specific work by St. Maximus. Firstly, we introduce the historical and theological background from which the heresy of Monotheletism and Monoenergetism arose. There follows an analysis of specific philosophical and theological terms which are used as structural elements in the theology of St. Maximus. Subsequently, we outline the historical course of the concept of “will” from antiquity until the age of St. Maximus, as well as the Orthodox teaching on Natural Will. The next stage gives the definition of deliberate will and presents the reasons according to which Christ does not have a deliberate will. Finally, we examine how the natural Energies or Acts of Christ correlate with His two natural Wills and two Natures.
[Field notebook XI]
Creators: name: Blaney, Johnny
name: Harry, Noel George
name: Joe, Clarence
name: Paul, Harvey
name: Paul, Tommy
name: Davis, John H.
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024
Subjects: subject: coo

description: 1 PDF file. Researcher indicates overall page range as 574-596.
Statistical Neurodynamics for sequence processing neural networks with finite dilution
Creators: name: Zhang, Pan
name: Chen, Yong
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We extend the statistical neurodynamics to study transient dynamics of sequence processing neural networks with finite dilution, and the theoretical results is supported by the extensive numerical simulations. It is found that the order parameter equations are completely equivalent to those of the Generating Functional Method, which means that crosstalk noise is normal distribution even in the case of failure in retrieval process. In order to verify the gaussian assumption of crosstalk noise, we numerically obtain the cumulants of crosstalk noise, and third- and fourth-order cumulants are found to be indeed zero even in non-retrieval case.
description: 9 pages, 3 figures
Fairness for Unobserved Characteristics: Insights from Technological Impacts on Queer Communities
Creators: name: Tomasev, Nenad
name: McKee, Kevin R.
name: Kay, Jackie
name: Mohamed, Shakir
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Advances in algorithmic fairness have largely omitted sexual orientation and gender identity. We explore queer concerns in privacy, censorship, language, online safety, health, and employment to study the positive and negative effects of artificial intelligence on queer communities. These issues underscore the need for new directions in fairness research that take into account a multiplicity of considerations, from privacy preservation, context sensitivity and process fairness, to an awareness of sociotechnical impact and the increasingly important role of inclusive and participatory research processes. Most current approaches for algorithmic fairness assume that the target characteristics for fairness--frequently, race and legal gender--can be observed or recorded. Sexual orientation and gender identity are prototypical instances of unobserved characteristics, which are frequently missing, unknown or fundamentally unmeasurable. This paper highlights the importance of developing new approaches for algorithmic fairness that break away from the prevailing assumption of observed characteristics.
description: Proceedings of the 2021 AAAI/ACM Conference on AI, Ethics, and Society (AIES 2021)
Vimarsha: A Journey from Inquiry to Transformation
Creators: name: Timalsina, Staneshwar
Publisher: name: Zenodo
Year: 2025
Subjects: sarvamnaya-oral-tradition-archive
sarvamnaya
vimarsha-foundation

description: Born from the wisdom of sages thousands of years ago, this tradition should and will not fade. It is our shared responsibility to preserve the living wisdom of the ṛṣis—the depth of their knowledge, their way of seeing, and their ability to remain still in the midst of change. By keeping this experiential and intellectual understanding alive, we ensure that future generations can continue to learn, reflect, and embody the clarity that has guided seekers for millennia.

This is not just a foundation but a movement, a vision unfolding. A space where thought transforms into wisdom and wisdom into a new way of seeing.

Where will Vimarsha take us next?

Join the journey. Engage. Contemplate. Expand. Learn. and Share.

#Vimarsha #Inquiry #Philosophy #Consciousness #Spirituality #Wisdom #Nonduality #Tantra #Transformation #indigenousknowledge #contemplative #Siva #Saiva #Shakta #AncientWisdom #EasternPhilosophy

Original YouTube video: https://www.youtube.com/watch?v=cdvb7eMGy44

This presentation is part of the Sarvāmnāya Oral Tradition Archive.
Vimarsha Foundation. (2025). The Sarvāmnāya Oral Tradition Archive [Data set]. Zenodo. https://doi.org/10.5281/zenodo.15188107
title: FIRES : a novel backscattering spectrometer for ISIS
Creators: name: Demmel, F
name: Garcia Sakai, V
name: Telling, M T F
name: Fernandez-Alonso, F
Publisher: name: Science and Technology Facilities Council
Year: 2010

description: FIRES is a novel neutron spectrometer designed to enlarge by one order of magnitude the spectral window presently available at the ISIS Pulsed Neutron and Muon Source. The extension to microelectron-volt resolution or, in the domain, to nanosecond relaxation timescales will open up new vistas in a wide range of research areas including biology and soft matter, energy conversion and storage, chemical analysis, and quantum magnetism. With a unique combination of high spectral resolution and wide dynamic range, FIRES provides a step-change in low-energy spectroscopy at ISIS and beyond. Three potential sites have been identified to position this new spectrometer. The preferred option is a beamline at the south side of Target Station 1. This report explores in detail why and how FIRES is to become an integral part of the ISIS instrumentation suite.
Disorder upon disorder: localization effects in the Kitaev spin liquid
Creators: name: Kao, Wen-Han
name: Perkins, Natalia B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In recent years, several magnetic Mott insulators with strong spin-orbit couplings were suggested to be proximate to the Kitaev quantum spin liquid (QSL) whose one of the most exciting features is the fractionalization of spin excitations into itinerant Majorana fermions and static $Z_2$ fluxes. Motivated by the emergence of this plethora of 4d and 5d transition metal Kitaev materials and by the fact that some level of disorder is inevitable in real materials, here we study how the Kitaev QSL responds to various forms of disorder, such as vacancies, impurities, and bond randomness. First, we argue that the presence of the quenched disorder in the Kitaev QSL can lead to the Anderson localization of Majorana fermions and the appearance of Lifshitz tails. We point out that the Anderson localization of low-energy states is particularly strong in the extended Kitaev model with the time reversal symmetry breaking term. Second, we show that the disorder effects on the low-energy Majorana fermion modes can be detected in thermal transport. Third, we show that at finite temperatures the $Z_2$ fluxes become thermally excited and give rise to an additional disorder for the Majorana fermions. This source of the disorder dominates at high temperatures. Fourth, we demonstrate that both the structure of the energy spectrum and the thermal transport properties of the disordered Kitaev QSL depend strongly on the character of disorder. While we find that both the site disorder and the bond randomness suppress the longitudinal thermal conductivity, the low-energy localization is stronger in the case of the site disorder.
description: Contribution to the Philip W. Anderson Memorial Special Issue of Annals of Physics [16 pages, 10 figures]
Spin-Hall Conductivity in Electron-Phonon Coupled Systems
Creators: name: Grimaldi, C.
name: Cappelluti, E.
name: Marsiglio, F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We derive the ac spin-Hall conductivity $σ_{\rm sH}(ω)$ of two-dimensional spin-orbit coupled systems interacting with dispersionless phonons of frequency $ω_0$. For the linear Rashba model we show that the electron-phonon contribution to the spin-vertex corrections breaks the universality of $σ_{\rm sH}(ω)$ at low-frequencies and provides a non-trivial renormalization of the interband resonance. On the contrary, in a generalized Rashba model for which the spin-vertex contributions are absent, the coupling to the phonons enters only through the self-energy, leaving the low frequency behavior of $σ_{\rm sH}(ω)$ unaffected by the electron-phonon interaction.
description: 4 pages, 3 figures, version as printed
[Field notebook X]
Creators: name: Blaney, Johnny
name: Harry, Noel George
name: Wilson, Ambrose
name: Wilson, Annie
name: Wilson, Nora
name: Davis, John H.
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024
Subjects: subject: coo

description: 1 PDF file. Researcher indicates overall page range as 543-573.
Weak Lensing Magnification Reconstruction with the Modified Internal Linear Combination Method
Creators: name: Hou, Shutong
name: Yu, Yu
name: Zhang, Pengjie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Measuring weak lensing cosmic magnification signal is very challenging due to the overwhelming intrinsic clustering in the observed galaxy distribution. In this paper, we modify the Internal Linear Combination (ILC) method to reconstruct the lensing signal with an extra constraint to suppress the intrinsic clustering. To quantify the performance, we construct a realistic galaxy catalogue for the LSST-like photometric survey, covering $20\,000\ °^2$ with mean source redshift at $z_s\sim 1$. We find that the reconstruction performance depends on the width of the photo-z bin we choose. Due to the correlation between the lensing signal and the source galaxy distribution, the derived signal has smaller systematic bias but larger statistical uncertainty for a narrower photo-z bin. We conclude that the lensing signal reconstruction with the Modified ILC method is unbiased with a statistical uncertainty $<5\%$ for bin width $Δz^P = 0.2$.
description: 12 pages, 9 figures, match the published version in Research in Astronomy and Astrophysics
Η διαδικασία της Διαδοχής και η μετάβαση από γενιά σε γενιά στις ελληνικές οικογενειακές ΜΜΕ
Creators: name: Τριανταφυλλίδης, Θεόδωρος Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Μικρομεσαίες επιχειρήσεις
Οικογενειακές επιχειρήσεις
Διαδοχή
Small and medium - sized enterprises
Family businesses
Succession

description: Η παρούσα διπλωματική εργασία εκπονήθηκε στο πλαίσιο του Διατμηματικού Προγράμματος Μεταπτυχιακών Σπουδών «Πληροφορική και Διοίκηση» του Αριστοτελείου Πανεπιστημίου Θεσσαλονίκης. Αποτελεί, στην ουσία, μία μελέτη που έχει ως βασικό της στόχο να διερευνήσει και να αξιολογήσει τον τρόπο με τον οποίο αντιμετωπίζουν το ζήτημα της διαδοχής και της μετάβασης από γενιά σε γενιά οι Μικρομεσαίες οικογενειακές επιχειρήσεις στην Ελλάδα. Ειδικότερα, επιχειρεί να αξιολογήσει τους παράγοντες που επηρεάζουν μια διαδοχή και τα χαρακτηριστικά που πρέπει να διαθέτει ένας διάδοχος. Επίσης, γίνεται αναφορά σε είδη διαδοχής και στη σχέση που υπάρχει ανάμεσα στον ιδιοκτήτη και το διάδοχο σε μια οικογενειακή μικρομεσαία επιχείρηση. Η παρούσα εργασία εστιάζει σε ζητήματα που εμφανίζονται στη διαδικασία της διαδοχής, σε πιθανά εμπόδια και συγκρούσεις και στους τρόπους που αυτά μπορούν να ξεπεραστούν. Μέσω της συγκεκριμένης έρευνας επιχειρήθηκε να διερευνηθεί η σημασία συγκεκριμένων παραγόντων και χαρακτηριστικών, με απώτερο σκοπό τη διεξαγωγή και ανάλυση συμπερασμάτων για το ποιοί είναι τελικά οι παράγοντες και οι λόγοι, στην πραγματικότητα, που επηρεάζουν τη βιωσιμότητα και αποδοτικότητα της επιχείρησης μετά τη διαδοχή και κατά πόσο και με ποιό τρόπο συντελούν στη βελτίωση της αποδοτικότητας και της εξέλιξης των μικρομεσαίων επιχειρήσεων στην Ελλάδα.
description: This present thesis was developed within the context of the Interdepartmental Program of Postgraduate Studies «Informatics and Management» of Aristotle University of Thessaloniki. It is a study whose main objective is to investigate and evaluate the way in which small and medium-sized family-based enterprises (SMEs) deal with the issue of succession and the transition from generation to generation in Greece. In particular, it attempts to assess the factors that affect a succession and the characteristics that a successor should possess. Also, a significant reference is made to succession patterns and the relationship between the owner and the successor to a family-owned small and medium-sized enterprise. This paper focuses on issues that appear in the process of succession, possible obstacles and conflicts, and the ways in which they can be overcome. This research has attempted to explore the importance of specific factors and features, with the ultimate goal of concluding at which are ultimately the factors and reasons that actually affecting the survival and success of the business after succession, and in which way they contribute to improving the efficiency and development of small and medium-sized enterprises in Greece.
Spatial structure of magnetic polarons in strongly interacting antiferromagnets
Creators: name: Nielsen, K. K.
name: Bastarrachea-Magnani, M. A.
name: Pohl, T.
name: Bruun, G. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The properties of mobile impurities in quantum magnets are fundamental for our understanding of strongly correlated materials and may play a key role in the physics of high-temperature superconductivity. Hereby, the motion of hole-like defects through an antiferromagnet has been of particular importance. It creates magnetic frustrations that lead to the formation of a quasiparticle, whose complex structure continues to pose substantial challenges to theory and numerical simulations. In this article, we develop a non-perturbative theoretical approach to describe the microscopic properties of such magnetic polarons. Based on the self-consistent Born approximation, which is provenly accurate in the strong-coupling regime, we obtain a complete description of the polaron wave function by solving a set of Dyson-like equations that permit to compute relevant spin-hole correlation functions. We apply this new method to analyze the spatial structure of magnetic polarons in the strongly interacting regime and find qualitative differences from predictions of previously applied truncation schemes. Our calculations reveal a remarkably high spatial symmetry of the polaronic magnetization cloud and a surprising misalignment between its orientation and the polaron crystal momentum. The developed framework opens up an approach to the microscopic properties of doped quantum magnets and will enable detailed analyses of ongoing experiments based on cold-atom quantum simulations of the Fermi-Hubbard model.
description: 18 pages, 12 figures
Delineation of burned arid landscapes using Landsat 8 OLI data: a case study of Karaganda region in Kazakhstan
Creators: name: Karpachevskiy, Andrey
name: Lednev, Sergey
name: Semenkov, Ivan
name: Sharapova, Anna
name: Nagiyev, Sultan
name: Koroleva, Tatiana
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Space Science
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: Plant Biology

description: In arid lands of Central Kazakhstan, fires commonly occur due to both man-made (e.g. space rocket launches) and natural factors. Remote sensing is the best method to identify burned landscapes and to assess their long-term dynamics. In this paper, we assessed total areas and seasonal features of fires using Landsat 8 OLI data of high spatial and temporal resolution, corrected for atmospheric effects. We defined data requirements, considered various spectral indices, and evaluated their suitability for automated delineation of burned areas. Spectral indices included special burn indices (NBRT, MIRBI, NBR, NBR2, BAI) and vegetation indices (MSAVI, MSAVI2, MTVI2, GEMI3) that allowed us to determine the boundaries and severity of fires indirectly based on the state of vegetation. Our study showed that burned areas were most accurately identified using indices of NBR2 (normalized burn ratio 2) and MSAVI2 (modified soil adjusted vegetation index 2). They were extracted using image segmentation and natural breaks classification methods. We have assessed MSAVI2 and NBR2 segmentation results with machine learning metrics, i.e. for Soyuz drop zone (landing area of rocket stages) precision of NBR segmentation equaled 99.5%, recall − 99.5%, accuracy − 98.5%. For Proton drop zone NBR segmentation precision equaled 99.3%, recall − 99.7%, accuracy − 99.4%. MSAVI2 results are less accurate. The accuracy of segmentation significantly depended on the vegetation state which was predetermined by the frequency and severity of previous fires within certain territory.
Electron states of mono- and bilayer graphene on SiC probed by STM
Creators: name: Mallet, Pierre
name: Varchon, François
name: Naud, Cécile
name: Magaud, Laurence
name: Berger, Claire
name: Veuillen, Jean-Yves
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a scanning tunneling microscopy (STM) study of a gently-graphitized 6H-SiC(0001) surface in ultra high vacuum. From an analysis of atomic scale images, we identify two different kinds of terraces, which we unambiguously attribute to mono- and bilayer graphene capping a C-rich interface. At low temperature, both terraces show $(\sqrt{3}\times \sqrt{3})$ quantum interferences generated by static impurities. Such interferences are a fingerprint of $π$-like states close to the Fermi level. We conclude that the metallic states of the first graphene layer are almost unperturbed by the underlying interface, in agreement with recent photoemission experiments (A. Bostwick et al., Nature Physics 3, 36 (2007))
description: 4 pages, 3 figures submitted
The relationship between acute confusion and select patient characteristics and environmental variables in elderly patients admitted to an acute orthopaedic service
Creators: name: Kozak, Cindy Joy
Publisher: name: University of British Columbia
Year: 2009

description: Acute confusion is a common complication of hospitalization in the elderly that contributes to the mortality and morbidity of this patient population. Although elderly individuals admitted to hospital with an orthopaedic condition consistently present with numerous risk factors associated with the development of acute confusion, not all develop the condition. The purpose of this prospective, descriptive, correlational study was to determine if there are specific patient characteristics and environmental variables associated with the development of acute confusion in elderly patients admitted to hospital with an orthopaedic condition, and if these factors could distinguish those elderly patients who become acutely confused from those who do not. Miller's Functional Consequences Theory (1990) provided a framework for examining the etiology of acute confusion in this population. A non-probability convenience sample of 41 subjects participated in the study. Participants received serial assessments of their cognitive status using the Folstein Mini- Mental State Exam (1975), the Clinical Assessment of Confusion - A (revised) (1990), and the Visual Analogue Scale - Confusion (1986). A determination of the occurrence of acute confusion was based on a predetermined change in score on all three assessment tools used. Fourteen (34%) of the participants developed acute confusion during the first week of hospitalization. Factors significantly associated with the development of acute confusion included: admission to a particular ward, a higher emotional stress score, a higher level of dependency prior to admission, a pre-existing cognitive impairment, and a primary diagnosis of fracture. The findings of this preliminary study support a multiple factor etiology for acute confusion within this patient population. Elderly patients admitted to hospital may have common pre-existing psychosocial risk factors that put them at risk for the development of acute confusion regardless of their physiologic risk. In addition, the findings suggest that the experience of an unplanned event, such as a hip fracture may be a differentiating characteristic of patients who develop acute confusion within the general orthopaedic patient population.
Διερεύνηση ενδοπροσωπικής και διαπροσωπικής προσαρμογής μαθητών με αναπηρία ή ειδικές εκπαιδευτικές ανάγκες στο δημοτικό σχολείο
Creators: name: Ταγγίρης, Νίκος Στέργιου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Σχολικός εκφοβισμός
Αναπηρία
Φιλία
School bullying
Disability
Friendship

description: Η παρούσα έρευνα εστίασε στον σχολικό εκφοβισμό, καθώς και στην ανάπτυξη και την ποιότητα των φιλικών σχέσεων, μεταξύ των μαθητών και των μαθητριών, καθώς εκτιμάται ότι οι φιλίες λειτουργούν προστατευτικά σε περιπτώσεις θυματοποίησης. Σκοπός ήταν να διερευνηθεί αν και κατά πόσο τα παιδιά με αναπηρία ή Ειδικές Εκπαιδευτικές Ανάγκες συμμετέχουν σε φαινόμενα εκφοβισμού, είτε σαν θύτες είτε σαν θύματα. Στην έρευνα συμμετείχαν 939 μαθητές και μαθήτριες της Πρωτοβάθμιας Εκπαίδευσης εκ των οποίων οι 150 ανήκαν στην ομάδα των μαθητών/τριών με αναπηρία ή ΕΕΑ και όλοι οι υπόλοιποι (789 μαθητές και μαθήτριες) στην ομάδα των παιδιών τυπικής ανάπτυξης. Ως ερευνητικό εργαλείο επιλέχθηκε το ερωτηματολόγιο κοινωνικών σχέσεων, το οποίο αξιολογεί τόσο την ποιότητα και την ανάπτυξη σχέσεων φιλίας, όσο και την εκδήλωση φαινομένων σχολικού εκφοβισμού. Τα αποτελέσματα έδειξαν ότι, σε ότι αφορά τις φιλικές σχέσεις υπάρχει υψηλό ποσοστό ικανοποίησης και υψηλή ποιότητα, ενώ σε ότι αφορά τον εκφοβισμό, η μεγαλύτερη μερίδα των συμμετεχόντων δήλωσε ότι δεν έχει καμία εμπλοκή σε ανάλογα φαινόμενα. Ενδιαφέροντα ήταν τα ευρήματα σχετικά με τους θύτες, καθώς όλοι τους ανήκουν στην ομάδα των μαθητών με αναπηρία ή ΕΕΑ. Επίσης, διαπιστώθηκε ότι η πλειοψηφία των παιδιών ασχολείται με αθλητικές δραστηριότητες οι οποίες έχει παρατηρηθεί ότι ενισχύουν τις φυσικές και σωματικές ικανότητές τους, προστατεύοντάς τους από τη στοχοποίηση σε περιστατικά εκφοβισμού.
description: This research focused on school bullying, as well as in the development and quality of friendly relationships among students and schoolchildren, estimated that friendships work protective in cases of victimization. The purpose was to investigate whether children with disabilities or special educational needs involved in bullying, either as aggressors or as victims. The research involved 939 students of primary education, of which 150 belonged to the Group of students with disabilities or special educational needs and everyone else (789 students) to the group with typical development. A questionnaire of social relations was used as research tool, which assesses both the quality and the development of relations of friendship, and school bullying. The results showed that, with regard to the friendly relations there is a high percentage of satisfaction and high quality, while in terms of intimidation, the largest portion of participants stated that it has no involvement in similar phenomena. Interests were related to offenders, as all of them belong to the group of students with disabilities or special educational needs. It has also been found that the majority of children are engaged in sports activities, which have been observed to enhance their physical abilitie
A closed formula for the number of convex permutominoes
Creators: name: Disanto, Filippo
name: Frosini, Andrea
name: Pinzani, Renzo
name: Rinaldi, Simone
Publisher: name: arXiv
Year: 2007
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05A15, 05A05

description: In this paper we determine a closed formula for the number of convex permutominoes of size n. We reach this goal by providing a recursive generation of all convex permutominoes of size n+1 from the objects of size n, according to the ECO method, and then translating this construction into a system of functional equations satisfied by the generating function of convex permutominoes. As a consequence we easily obtain also the enumeration of some classes of convex polyominoes, including stack and directed convex permutominoes.
On a discrete Davey-Stewartson system
Creators: name: Gegenhasi
name: Hu, Xing-Biao
name: Levi, Decio
Publisher: name: arXiv
Year: 2006
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We propose a differential difference equation in ${\mathcal R}^1\times {\mathcal Z}^2$ and study it by Hirota's bilinear method. This equation has a singular continuum limit into a system which admits the reduction to the Davey-Stewartson equation. The solutions of this discrete DS system are characterized by Casorati and Grammian determinants. Based on the bilinear form of this discrete DS system, we construct the bilinear Bäcklund transformation which enables us to obtain its Lax pair.
description: 12 pages, 2 figures
An Open Source Injection and Recovery Tool and Measuring Transit Detection Efficiency in Ultracool Dwarfs Observed by K2
Creators: name: Sagear, Sheila A.
name: Skinner, Julie N.
name: Muirhead, Philip S.
name: Gully-Santiago, Michael
Publisher: name: Zenodo
Year: 2019

description: We develop an extension to an open source Python framework called “lightkurve” for high precision time series photometric signal injection and recovery with support for a range of astrophysical transients, including planetary transits, starspot rotation, stellar flares, and supernovae. These tools will provide support for measuring transit detection efficiency in ultracool dwarfs observed by K2. We are interested in our ability to recover various types of transits around dwarfs at the spectral type M/L transition; to investigate this, we inject transits that simulate planets from 0.5 to 3.5 Earth radii and of periods from 0.3 to 26 days and attempt to recover them. We find a threshold of detectability as a relation to orbital period and radius. These detection efficiencies allow us to calculate the probability of seeing planets around these stars as it relates to the planet occurrence rate for a certain type of planet. We can constrain the probability of seeing no planets around a given number of stars and put an upper limit on the planet occurrence rate. We have calculated an upper limit for planet occurrence for each type of planet around M/L dwarfs observed by K2.
Window-Level Rare Data Triggering and Tiered Annotation Priority Architecture
Creators: name: Wolevon, Rhy
Publisher: name: Zenodo
Year: 2025
Subjects: language model
data filtering
dialogue window
rare-hit
LLM training
prototype
semantic annotation

description: This document proposes a lightweight architecture for filtering rare but semantically high-value conversation windows in LLM training, leveraging rare-hit triggers as scoring conditions. It outlines a prototype-phase pipeline and tiered annotation strategy aimed at extracting more meaningful data from long-form dialogue.

 The concept originated from user-side observation and reverse-engineering of language model response behavior. Language structuring and formatting were assisted by ChatGPT-4o.

This document is released under the Creative Commons Attribution 4.0 International (CC BY 4.0) license.It may be freely shared, cited, and adapted—including for commercial use—provided that proper credit is given to the original author, Rhy Wolevon.
Spin Injection and Nonlocal Spin Transport in Magnetic Nanostructures
Creators: name: Takahashi, S.
name: Maekawa, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We theoretically study the nonlocal spin transport in a device consisting of a nonmagnetic metal (N) and ferromagnetic injector (F1) and detector (F2) electrodes connected to N. We solve the spin-dependent transport equations in a device with arbitrary interface resistance from a metallic-contact to tunneling regime, and obtain the conditions for efficient spin injection, accumulation, and transport in the device. In a device containing a superconductor (F1/S/F2), the effect of superconductivity on the spin transport is investigated. The spin-current induced spin Hall effect in nonmagnetic metals is also discussed.
description: 6 pages, 4 figures, Joint JSPS and ESF Conference on Vortex Matter in Nanostructured Superconductors (VORTEX IV)
Role of coherence in quantum-dot-based nanomachines within the Coulomb blockade regime
Creators: name: Ribetto, Federico D.
name: Bustos-Marún, Raúl A.
name: Calvo, Hernan L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: During the last decades, quantum dots within the Coulomb blockade regime of transport have been proposed as essential building blocks for a wide variety of nanomachines. This includes thermoelectric devices, quantum shuttles, quantum pumps, and even quantum motors. However, in this regime, the role of quantum mechanics is commonly limited to provide energy quantization while the working principle of the devices is ultimately the same as their classic counterparts. Here, we study quantum-dot-based nanomachines in the Coulomb blockade regime, but in a configuration where the coherent superpositions of the dots' states plays a crucial role. We show that the studied system can be used as the basis for different forms of "true" quantum machines that should only work in the presence of these coherent superpositions. We analyze the efficiency of these machines against different nonequilibrium sources (bias voltage, temperature gradient, and external driving) and the factors that limit it, including decoherence and the role of the different orders appearing in the adiabatic expansion of the charge/heat currents.
description: 18 pages, 7 figures
The serotonergic relationship between feeding and sexual behaviour in the male rat
Creators: name: Moe, Ingrid Valerie
Publisher: name: University of British Columbia
Year: 2009

description: Both feeding and sexual behaviour play a major role in the survival of a species. Research has revealed that there may be an antagonistic relationship between these two behaviours. For example, in times of limited food availability, priorities in energy partitioning favour individual survival (i.e., searching for food) over reproduction. Further, there appear to be significant interactions between the neuroendocrine control of reproduction and the regulation of energy balance. Research investigating the central sites that regulate sexual and feeding behaviour has shown the hypothalamus to be of prime importance for both these behaviours. Further, serotonin (5-HT) and norepinephrine (NE) have been shown to influence copulatory activity and food consumption in rats. There has been a considerable amount of controversy as to the relative involvement of different 5-HT receptor subtypes in both sexual and feeding behaviour. This thesis focusses on the importance of the 5-HT2 receptor subtype in feeding and copulation in the male rat. Experiments 1-3 were conducted in order to establish whether there is a natural relationship between sexual and feeding behaviour in the male rat. In these experiments, the involvement of 5-HT2 receptors was investigated by recording the display of wet dog shakes, a behavioural indicator of 5-HT2 activity. These experiments revealed that there may be a relationship between the natural level of sexual activity and feeding behaviour, and this may be due to an endogenous difference in 5-HT2 receptors. Experiments 4-9 were developed to investigate the specific receptor subtype important for the inhibition of sexual responding and feeding behaviour by 1-(2,5-dimethoxy-4-iodophenyl aminopropane) (DOI), a 5-HT₂/1C receptor agonist. By employing selective 5-HT₂ antagonists, it was revealed that while 5-HT₂ receptors appear to be of prime importance in sexual activity in the male rat, they are not as important in feeding behaviour. It may be that DOIs activity at 5-HT₁c receptors are more important for its influence on feeding behaviour than it's affect at 5-HT₂ receptors, while the reverse may be true of sexual responding. Further, 5-HT may be less important in feeding than copulation as a larger dose of DOI was required to inhibit feeding than that used in sexual behaviour experiments. Taken together, these studies suggest that while 5-HT appears to be involved in both feeding and sexual responding, 5-HT may be more important in the regulation of sexual responding than in feeding behaviour and different receptor subtypes may mediate the influence of this neurotransmitter on feeding and copulatory activity.
Some Remarks on the Best Approximation Rate of Certain Trigonometric Series
Creators: name: Zhou, Song-Ping
name: Le, Rui-Jun
Publisher: name: arXiv
Year: 2006
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 42A20; 42A32

description: The main object of the present paper is to give a complete result regarding the best approximation rate of certain trigonometric series in general complex valued continuous function space under a new condition which gives an essential generalization to $O$-regularly varying quasimonotonicity. An application is present in Section 3.
description: 14 pages
The targum (1950:May 2 - 1950:May 19)
Creators: name: No Name Supplied
Publisher: name: Targum Association
Year: 1950

description: Some University historians indicate that the Targum was first published as an annual in 1867, but of this we have no extant evidence. In January 1869, the Targum as we now know it, made its appearance as a monthly paper that concerned itself with student “literary contributions” and college news as well as serving as a vehicle for bringing news to alumni and the general public. The newspaper, which originally was for sale, varied in frequency over the years as did its title (The Targum, Rutgers Targum, Rutgers Daily Targum, and Daily Targum). The newspaper has continuously been published since 1869 with the exception of 19 months during the second world war, between February 1944 and October 1945. The Targum was published by the students of Rutgers College, and later Rutgers University—New Brunswick represented through the years as the Targum Association, Rutgers Targum Association, and Rutgers College Targum. As a student organization, the Targum operated under the oversight of the dean of students and student government but in October 1980, the Targum became an independent college paper.
The relation between instant and light-front formulations of quantum field theory
Creators: name: Polyzou, Wayne
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The scattering equivalence of quantum field theories formulated with light-front and instant-form kinematic subgroups is established using non-perturbative methods. The difficulty with field theoretic formulations of Dirac's forms of dynamics is that the free and interacting unitary representations of the Poincaré group are defined on inequivalent representations of the Hilbert space, which means that the concept of kinematic transformations must be modified on the Hilbert space of the field theory. This work addresses this problem by assuming the existence of a field theory with the expected properties and constructs equivalent representations with instant and front form kinematic subgroups. In this construction both the light-front and instant-form formulations share the same vacuum and one-particle states. The free field Fock space plays no role. There is no "quantization" of a classical theory. The property that survives from the perturbative approach is the notion of a kinematic subgroup, which means kinematic Poincaré transformations can be trivially implemented by acting on suitable basis vectors. This non-perturbative approach avoids dealing with issues that arise in perturbative treatments where is it necessary to have a consistent treatment of renormalization, rotational covariance, and the structure of the light-front vacuum. While addressing these issues in a computational framework is important for applications, this work may provide some insight into the nature of the expected resolution and identifies the origin of some of differences between the perturbative and non-perturbative approaches.
description: 21 pages, two new sections
WebGL και GIS: Διερεύνηση των δυνατοτήτων που προσφέρει η χρήση διαδραστικών κινούμενων γραφικών στοιχείων σε περιβάλλον web-GIS
Creators: name: Γκοργκόλης, Βασίλειος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: WebGL (Web Graphics Library)
GIS (Geographic Information Systems)
Interactive Animated Graphics
Διαδραστικά Κινούμενα Γραφικά
Γεωγραφικά Συστήματα Πληροφοριών

description: Οι σύγχρονες τάσεις όσον αφορά τη χρήση του διαδικτύου προωθούν την «εργασία στο cloud» και τη διαδικτυακή συνεργασία. Πρόσθετα, η βελτίωση των υποδομών σύνδεσης στο διαδίκτυο και η ανάπτυξη τεχνολογιών οπτικοποίησης δεδομένων όπως η WebGL, επιτρέπουν τη χρήση υπηρεσιών «cloud» για τη διαδικτυακή ανάλυση και οπτικοποίηση σύνθετων δεδομένων σε πραγματικό χρόνο. Σε ένα τέτοιο ευνοϊκό περιβάλλον, μεγάλη είναι η ανάπτυξη των συστημάτων web GIS τα τελευταία χρόνια. Κατά τη συγγραφή της παρούσας διατριβής πραγματοποιήθηκε βιβλιογραφική έρευνα σχετικά με τη χρήση της WebGL για τη δημιουργία Web GIS συστημάτων και τη χρήση διαδραστικών κινούμενων γραφικών στοιχείων σε αυτά. Επιπλέον, διερευνήθηκαν οι δυνατότητες παραγωγής διαδραστικών κινούμενων γραφικών στοιχείων με χρήση WebGL που προσφέρουν τα υπάρχοντα λογισμικά δημιουργίας Web GIS και προτείνεται μια επέκταση των δυνατοτήτων που προσφέρει το λογισμικό ανοιχτού κώδικα QGIS ώστε να προσφέρει αντίστοιχη λειτουργικότητα στα πλαίσια δημιουργίας ενός Web GIS.
description: Current trends regarding internet use promote “working on the cloud” and online cooperation. In addition, the improvement of internet connection infrastructure and the development of visualization technologies like WebGL, permit the use of “cloud” services for real-time online analysis and visualization of complex data. In such a favorable environment, Web GIS systems have been under significant development during the past few years. During the process of writing this dissertation, a bibliographic research was carried out concerning the use of WebGL for the creation of Web GIS systems and the use of interactive animated graphical elements therein. Moreover, the possibilities offered by current Web GIS deploying software regarding the production of interactive animated graphical elements, using WebGL, were reviewed and an expansion of the possibilities offered by open source software QGIS is suggested, so that it offers such functionality in a Web GIS creation context.