cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Kylie Jenner Phenomenon: Emerging Female Celebrity on Social Media
Creators: name: Frangos, Demetra George
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Kylie Jenner
Φεμινισμός
Μέσα κοινωνικής δικτύωσης
Feminism
Social Media

description: This paper will investigate how Kylie Jenner’s fans interpret her portrayal of feminism while comparing and analysing to what extent their interpretations fit with Gill’s (2007) and McRobbie’s (2009) theories on post-feminism. Kylie Jenner is a social media celebrity, millennial icon, and entrepreneur and is important and influential female celebrity in contemporary American society. Through discourse analysis of eight interviews of Kylie’s fans, my research focuses on their perspectives on feminism in relation to celebrity and social media culture, and how these relate to post-feminism. This investigation of how fans interpret and experience Kylie’s portrayal of feminism hopes to fill in gaps within current literature on the state of feminism today. Conclusively, many insights were found concerning Kylie’s representation of post-feminism and neoliberal ideologies by her fans concerning her expression of self, personal agency, sexuality, and otherness on social media.
description: Αυτό το άρθρο θα διερευνήσει πώς οι οπαδοί της Kylie Jenner ερμηνεύουν την απεικόνιση του φεμινισμού, και σε ποιο βαθμό οι ερμηνείες τους ταιριάζουν με τις θεωρίες των Gill (2007) και McRobbie (2009) για τον μετα-φεμινισμό. Με εργαλείο την ανάλυση λόγου από οκτώ συνεντεύξεις των οπαδών της Kylie, η παρούσα έρευνα επικεντρώνεται στη σχέση του φεμινισμού με την κουλτούρα των κοινωνικών μέσων ενημέρωσης και τον τρόπο με τον οποίο σχετίζονται με τον μετα-φεμινισμό.
Assessment Mapping Strategies for Competency-Based Computing Education
Creators: name: Wong, Nicholas Heng Loong
Publisher: name: Singapore Institute of Technology
Year: 2024
Subjects: classificationCode: 390113
subject: Science, technology and engineering curriculum and pedagogy
classificationCode: 390303
subject: Higher education
classificationCode: 390402
subject: Education assessment and evaluation
classificationCode: 460804
subject: Computing education

description: There is an increasing trend in higher education on the emphasis on competency-based education (CBE). It is recog?nized that CBE can be highly effective in training industry-ready graduates. An important component of developing CBE courses is the design and planning of appropriate competency-based assessments. While assessment methods have been well-studied in general, the practical aspects of planning how assessments map to competencies in a course and how to feasibly implement an assessment plan in real-time has been less studied. In this paper, we look at practical strategies to map and implement competency-based assessments in computing education by pre?senting examples applied to courses with topical or topic-agnostic competencies.
Circumbinary Disk Accretion into Spinning Black Hole Binaries
Creators: name: Armengol, Federico G. Lopez
name: Combi, Luciano
name: Campanelli, Manuela
name: Noble, Scott C.
name: Krolik, Julian H.
name: Bowen, Dennis B.
name: Avara, Mark J.
name: Mewes, Vassilios
name: Nakano, Hiroyuki
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Supermassive black hole binaries are likely to accrete interstellar gas through a circumbinary disk. Shortly before merger, the inner portions of this circumbinary disk are subject to general relativistic effects. To study this regime, we approximate the spacetime metric of close orbiting black holes by superimposing two boosted Kerr-Schild terms. After demonstrating the quality of this approximation, we carry out very long-term general relativistic magnetohydrodynamic simulations of the circumbinary disk. We consider black holes with spin dimensionless parameters of magnitude 0.9, in one simulation parallel to the orbital angular momentum of the binary, but in another anti-parallel. These are contrasted with spinless simulations. We find that, for a fixed surface mass density in the inner circumbinary disk, aligned spins of this magnitude approximately reduce the mass accretion rate by 14% and counter-aligned spins increase it by 45%, leaving many other disk properties unchanged.
description: 23 pages, 15 figures, Submitted to ApJ
Quantum dynamics and breakdown of classical realism in nonlinear oscillators
Creators: name: Gat, Omri
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The dynamics of a quantum nonlinear oscillator is studied in terms of its quasi-flow, a dynamical mapping of the classical phase plane that represents the time-evolution of the quantum observables. Explicit expressions are derived for the deformation of the classical flow by the quantum nonlinearity in the semiclassical limit. The breakdown of the classical trajectories under the quantum nonlinear dynamics is quantified by the mismatch of the quasi-flow carried by different observables. It is shown that the failure of classical realism can give rise to a dynamical violation of Bell's inequalities.
description: RevTeX 4 pages, no figures
Εικονικότητα: Μελέτη των αρθρ. 138,139 ΑΚ από Ουσιαστικής και Δικονομικής Πλευράς. Ερμηνεία ζητημάτων τα οποία απασχόλησαν Νομολογία και Θεωρία
Creators: name: Βουλκίδης, Τηλέμαχος Κλεάνθη
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Εικονική δικαιοπραξία
Καλυπτόμενη δικαιοπραξία
Καλόπιστος τρίτος
Fictitious act
Covered act
Bona fide third party

description: Σκοπός της εργασίας είναι η μελέτη των προϋποθέσεων για την εφαρμογή των άρθρων 138 και 139ΑΚ περί εικονικότητας υπό το πρίσμα της θεωρίας και της νομολογίας. Οι ανωτέρω διατάξεις συμβάλλουν στην προστασία τόσο των συναλλαγών όσο και της ιδιωτικής αυτονομίας. Οριοθετήσαμε το πεδίο εφαρμογής του άρθρου 138ΑΚ και τη δυνατότητα εφαρμογής του σε άλλους κλάδους του ιδιωτικού και δημοσίου δικαίου. Έπειτα, εξετάσαμε ζητήματα δικονομικού δικαίου, τα οποία απασχόλησαν την νομολογία και τη θεωρία όπως λ.χ. εάν η απόλυτη ακυρότητα της εικονικής δήλωσης βούλησης λαμβάνεται υπόψη και αυτεπαγγέλτως από το δικαστήριο. Εξετάσαμε, επίσης, υπό ποιες προϋποθέσεις είναι έγκυρη η καλυπτόμενη δικαιοπραξία, καθώς και από την άποψη του δικονομικού δικαίου, ποιος έχει το βάρος απόδειξης Τέλος, οριοθετήσαμε το πεδίο εφαρμογής του άρθρου 139.1ΑΚ και εξετάσαμε εάν αποτελεί εξαίρεση του κανόνα που θέτει το άρθρο 138.1ΑΚ και ποιες ειναι οι συνέπειες αυτής της εξαίρεσης.
description: The aim of the present thesis was the study of the conditions for the application of Article 138 and 139 of the civil code in the light of legal writings and case-law. These Articles of the civil code contribute to protection of transactions and private autonomy. We defined the scope of Article 138 of the civil code and confirmed its applicability in the other branches of private and public law. Moreover, we examined issues regarding civil procedural law e.g. whether the courts consider of their own motion the fact that a fictitious act is incurably void. Furthermore, we examined whether and under which conditions the covered (by the fictitious act) act is valid and, from the civil procedural law perspective and which party bears the burden of proof. Another aim of this thesis was to define the scope of Article 139 and study whether it constitutes an exception to the rule of Article 138 is and which are its consequences.
Polarization of the Crab Nebula with disordered magnetic components
Creators: name: Nakamura, Yuji
name: Shibata, Shinpei
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper, we present an expanding disc model to derive polarization properties of the Crab nebula. The distribution function of the plasma and the energy density of the magnetic field are prescribed as function of the distance from the pulsar by using the model by Kennel and Coroniti (1984) with $σ= 0.003$, where $σ$ is the ratio of Poynting flux to the kinetic energy flux in the bulk motion just before the termination shock. Unlike previous models, we introduce disordered magnetic field, which is parameterized by the fractional energy density of the disordered component. Flow dynamics is not solved. The mean field is toroidal. Averaged polarization degree over the disc is obtained as a function of inclination angle and fractional energy density of the disordered magnetic field. It is found for the Crab that the disordered component has about 60 percent of the magnetic field energy. This value is also supported by the facts that the disc appears not `lip-shape' but as `rings' in the intensity map as was observed, and that the highest polarization degree of $\sim 40$ percent is reproduced for rings, being consistent with the observation. We suggest that because the disordered field contributes rather pressure than tension, the pinch force may be over-estimated in previous relativistic magnetohydrodynamic simulations. Disruption of the toroidal magnetic field with alternating direction, which is proposed by Lyubarski (2003), may actually takes place. The relativistic flow speed, which is indicated by the front-back contrast, can be detected in asymmetry in distributions of the position angle and depolarization.
description: 7 pages, 8 figures, accepted for publication in MNRAS
The Digital Is Critical: Creating and Maintaining Radical Library Systems
Creators: name: Dohe, Kate
Publisher: name: Digital Repository at the University of Maryland
Year: 2019
Subjects: digital libraries
critical theory
library technology

description: Part of the "Webinar on Algorithmic Bias" organized by the ACRL Digital Collections Discussion Group and Open Research Discussion Group.
description: Digital libraries should be one of the most powerful tools available to libraries to reduce economic, geographic, ableist, and political barriers to global open access for scholarly and cultural materials. But how well are digital library systems delivering on these social justice aspirations? The application landscape has dwindled to a handful of commercial applications owned by businesses with long histories in commodifying content, and an array of open source products with high technological barriers to entry. Inequalities between institutions, communities, and valuation of labor are increasingly apparent within the open source digital library space. This interactive discussion will explore the impacts of stratification on library technologies, and consider critical approaches to create and maintain radical digital projects.
Magnification Control in Winner Relaxing Neural Gas
Creators: name: Claussen, Jens Christian
name: Villmann, Thomas
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: An important goal in neural map learning, which can conveniently be accomplished by magnification control, is to achieve information optimal coding in the sense of information theory. In the present contribution we consider the winner relaxing approach for the neural gas network. Originally, winner relaxing learning is a slight modification of the self-organizing map learning rule that allows for adjustment of the magnification behavior by an a priori chosen control parameter. We transfer this approach to the neural gas algorithm. The magnification exponent can be calculated analytically for arbitrary dimension from a continuum theory, and the entropy of the resulting map is studied numerically conf irming the theoretical prediction. The influence of a diagonal term, which can be added without impacting the magnification, is studied numerically. This approach to maps of maximal mutual information is interesting for applications as the winner relaxing term only adds computational cost of same order and is easy to implement. In particular, it is not necessary to estimate the generally unknown data probability density as in other magnification control approaches.
description: 14pages, 2 figures
Dust Attenuation in Hydrodynamic Simulations of Spiral Galaxies
Creators: name: Rocha, Miguel
name: Jonsson, Patrik
name: Primack, Joel R.
name: Cox, T. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the effects of dust in hydrodynamic simulations of spiral galaxies when different radial metallicity gradients are assumed. SUNRISE, a Monte-Carlo radiative-transfer code, is used to make detailed calculations of the internal extinction of disk galaxies caused by their dust content. SUNRISE is used on eight different Smooth Particle Hydrodynamics (SPH) simulations of isolated spiral galaxies. These galaxies vary mainly in mass and hence luminosity, spanning a range in luminosities from -16 to -22 magnitudes in the B band. We focus on the attenuation in different wavelength bands as a function of the disk inclination and the luminosity of the models, and compare this to observations. Observations suggest different metallicity gradients for galaxies of different luminosities. These metallicity gradients were explored in our different models, finding that the resulting dust attenuation matches observations for edge-on galaxies, but do not show a linear behaviour in log axis ratio as some observations have suggested. A quadratic law describing the dependence of attenuation on inclination, as proposed by more recent observations, reconciles the attenuation of the simulations at intermediate inclinations with observations. We also compare the total infrared-to-ultraviolet flux ratios for the simulated galaxies with those of the SINGS sample and find general agreement. Finally we compare our results with those from simpler models that do not take into account structure such as spiral arms, finding that the inclusion of sub-structure on the size scale of spiral arms does not change conclusions about the attenuation dependence on inclination or wavelength.
description: 12 pages, 8 figures, all figures require colors, accepted for publication in MNRAS. Major changes from v1 include: Comparison of the calculated infrared-to-ultraviolet ratios in our models to those observed by SIGNS, clearer fonts in our plots and clearer justification of the rationale behind the adopted gradients. Changes from v2: Added journal-ref
Dynamic Automatic Chiptune Generation for Game Music
Creators: name: Leo, Valerie En Qi
name: Haniffah, Seri Hanzalah
name: Teo, Xuanting
name: Tian, Bryon Yue Xiao
name: Wong, Nicholas Heng Loong
Publisher: name: Singapore Institute of Technology
Year: 2024
Subjects: classificationCode: 460101
subject: Applications in arts and humanities
classificationCode: 460302
subject: Audio processing
classificationCode: 460703
subject: Entertainment and gaming
classificationCode: 461103
subject: Deep learning
classificationCode: 461104
subject: Neural networks
classificationCode: 460707
subject: Sound and music computing

description: This project investigates how Artificial Intelligence can be used to generate chiptune music that changes based on emotional cues in real-time. Utilising Long Short-Term Memory networks, the research aims to create emotionally impactful and musically unified chiptune music to increase players’ involvement in video games. The YM2413-MDB dataset which includes FM video game music from the 80s with detailed emotional annotations, acts as the model’s training data. Essential steps consist of preprocessing the Musical Instrument Digital Interface files into tokenized events, training the LSTM to recognise patterns and emotions and creating a user-friendly interface for user input. The proposed solution includes generating music sequences that mirror chosen emotions, converting the sequences into sound and evaluating the model’s success through automated and human evaluations. This study focuses on filling up the void in emotion-?based music creation in real-time with the goal of expanding interactive entertainment and enhancing game experiences using chiptune soundtracks that adapt to the gameplay.
Molecular cloning of blueberry shock ilarvirus (BSIV) RNA 3 containing the coat protein gene and identification of a virus associated with BSIV-infected blueberry blossoms
Creators: name: Bremsak, Irene Jane
Publisher: name: University of British Columbia
Year: 2009

description: Blueberry shock ilarvirus (BSIV) was cloned using random primers. Complementary DNA (cDNA) was ligated into Bluescript II and used to transform into DH5a Escherichia coil. The plasmids were screened for BSIV RNA 3 cDNA by Northern, Southern and dot blots. Seven clones were restriction mapped. A 412 base pair region of three clones was sequenced and compared to tobacco streak, citrus variegation, apple mosaic and prune dwarf ilarvirus coat proteins (cp) at the nucleotide and amino acid levels. The BSIV cp amino acid sequence was 61% homologous with that of apple mosaic virus cp. BSIV virions were localized in ‘Bluetta’ and ‘Rancocas’ blueberry pollen by immunoelectron microscopy. The identity of a virus co-isolated with BSIV from blueberry blossoms was determined. It’s host range and symptomatology differed significantly from BSIV. Purified virions were isometric, Ca. 32 nm in diameter, with electron dense centres. The cp subunit had a molecular weight (Mw) of 30 kD. The genome was single-stranded and tripartite with M’s of 1.19, 1.01, 0.74 and 0.37 x 106 D and when the double-stranded RNA profile was compared to that of cucumber mosaic virus (CMV) isolated from primula, they were identical. Polyclonal antiserum and monoclonal antibodies were produced. The polyclonal antiserum reacted with CMV serotypes I and II; all the monoclonal antibodies reacted with CMV-II, although some monoclonal antibodies reacted with CMV-I. The virus, called CMV-B since it was isolated from blueberry blossoms, was an isolated of CMV-II. A relationship between BSIV and CMV in blueberry plants was investigated. None of the 650 BSIV infected blueberry tissue samples tested in 1993 were infected with CMV. Vegetation within and near the BSIV-infected field, was surveyed and seven of nineteen species tested were infected with CI\4V. It was concluded that CMV-infected pollen deposited by pollinators on the blueberry blossoms was the source and that blueberry was probably not a host of CMV.
Hardy inequalities on metric measure spaces, II: The case $p>q$
Creators: name: Ruzhansky, Michael
name: Verma, Daulti
Publisher: name: arXiv
Year: 2021
Subjects: subject: Functional Analysis (math.FA)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 26D10, 22E30

description: In this note we continue giving the characterisation of weights for two-weight Hardy inequalities to hold on general metric measure spaces possessing polar decompositions. Since there may be no differentiable structure on such spaces, the inequalities are given in the integral form in the spirit of Hardy's original inequality. This is a continuation of our paper [M. Ruzhansky and D. Verma. Hardy inequalities on metric measure spaces, Proc. R. Soc. A., 475(2223):20180310, 2018] where we treated the case $p\leq q$. Here the remaining range $p>q$ is considered, namely, $0
description: 18 pages; this is the second part to the paper arXiv:1806.03728. Final version, to appear in Proc. Royal Soc. A
Inputs Used in U.S. Farm Production: A Bibliography of Selected Economic Studies, 1950-80
Creators: name: Spinks, Thomas
name: Dahl, Dale C.
name: Spinks, Thomas
name: Dahl, Dale C.
Publisher: name: Unknown
Year: 1981
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Labor and Human Capital
subject: Land Economics/Use
subject: Research Methods/ Statistical Methods
subject: Resource /Energy Economics and Policy
subject: Farm inputs
subject: Input research
subject: Input markets
subject: Production inputs
subject: Feed
subject: Fertilizer
subject: Finance
subject: Labor
subject: Machinery
subject: Pesticides
subject: Petroleum
subject: Seed
subject: Water

description: This bibliography covers economic research reports prepared during 1950-80 on the inputs used in farm production. Categories of inputs include farm supply cooperatives, feed, fertilizer, finance, labor, land, machinery and buildings, pesticides, petroleum, seed, and water.
description: Research funding for this bibliography was provided by the Economics and Statistics Service of the U.S. Department of Agriculture. The literature search was conducted at the University of Minnesota’s Agriculture Experiment Station.
Black Box Probabilistic Numerics
Creators: name: Teymur, Onur
name: Foley, Christopher N.
name: Breen, Philip G.
name: Karvonen, Toni
name: Oates, Chris. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: Computation (stat.CO)
subject: Methodology (stat.ME)
subject: Machine Learning (stat.ML)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Probabilistic numerics casts numerical tasks, such the numerical solution of differential equations, as inference problems to be solved. One approach is to model the unknown quantity of interest as a random variable, and to constrain this variable using data generated during the course of a traditional numerical method. However, data may be nonlinearly related to the quantity of interest, rendering the proper conditioning of random variables difficult and limiting the range of numerical tasks that can be addressed. Instead, this paper proposes to construct probabilistic numerical methods based only on the final output from a traditional method. A convergent sequence of approximations to the quantity of interest constitute a dataset, from which the limiting quantity of interest can be extrapolated, in a probabilistic analogue of Richardson's deferred approach to the limit. This black box approach (1) massively expands the range of tasks to which probabilistic numerics can be applied, (2) inherits the features and performance of state-of-the-art numerical methods, and (3) enables provably higher orders of convergence to be achieved. Applications are presented for nonlinear ordinary and partial differential equations, as well as for eigenvalue problems-a setting for which no probabilistic numerical methods have yet been developed.
Η επίδραση ενός προγράμματος άσκησης με τη μέθοδο Pilates σε επιλεγμένες φυσικές και κινητικές ικανότητες παιδιών με σύνδρομο down
Creators: name: Παπαδοπούλου, Χρυσούλα Ελευθερίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Πιλάτες
Σύνδρομο ντάουν
Φυσικές & κινητικές ικανότητες
Pilates
Down syndrome
Physical & Motor skills

description: Στην παρούσα εργασία μελετάται η επίδραση ενός προγράμματος άσκησης με την μέθοδο Pilates στην ισορροπία παιδιών με σύνδρομο Down. Συμμετείχαν έξι αγόρια και έξι κορίτσια δημοτικού σχολείου με σύνδρομο Down, τα οποία είχαν μέσο όρο ηλικίας 9.58 ± 2.19 ετών. Πραγματοποιήθηκαν 16 συνεδρίες σε διάστημα οχτώ εβδομάδων, η διάρκεια των συνεδριών ήταν 45 λεπτά και τα παιδιά χωρίστηκαν σε μικρές ομάδες των τριών ατόμων. Στην έρευνα εφαρμόστηκε το πρόγραμμα Pilates και αξιολογήθηκαν οι μαθητές και μαθήτριες στη στατική ισορροπία η οποία αξιολογήθηκε με τις δοκιμασίες όρθια στάση, στάση Tandem Romberg και στάση στο ένα πόδι και στην δυναμική ισορροπία η οποία αξιολογήθηκε με το Modified Bass Dynamic stability Test και διαδοχικά άλματα με το ένα πόδι με εναλλαγή κατεύθυνσης πάνω από μια ευθεία γραμμή. Πραγματοποιήθηκαν τρεις μετρήσεις σχετικά με τις επιδόσεις των μαθητών σε μια σειρά από ασκήσεις: πριν την παρέμβαση (pre-treatment test), με το πέρας της παρέμβασης (post-treatment test) και μια ακολουθητική (follow-up test), η οποία και εφαρμόστηκε μετά από κενό δύο εβδομάδων. Επιπρόσθετα τα αποτελέσματα για τον έλεγχο τον επιδόσεων στην στατική και δυναμική ισορροπία υπό την επίδραση του προγράμματος αξιολογήθηκαν με την «Κλίμακα εμπιστοσύνης στην ικανότητα ισορροπίας» (ABC Activities Specific Balance Confidence Scale, Powell & Myers, 1995) τα οποία συμπληρώθηκαν από τους διδάσκοντες της προσαρμοσμένης ειδικής αγωγής και τους γονείς.
description: In this work we present the results of a study on the effects of a Pilates exercise program, on the balance of children with Down syndrome. Twelve elementary pupils with Down syndrome, six boys and six girls, with an average age of 9.58 ± 2.19 years participated. 16 exercise sessions where done in 8 weeks, with each lasting 45 minutes. The children were split in small groups consisting of three people. The Pilates program was applied to the students and the pupils were assessed in the static equilibrium using the Standing Position, the Tandem Romberg Position and Stork Stand position while dynamic equilibrium was assessed using the Modified Bass Dynamic stability Test and the Single-limb Crossover-Hop test for distance. Three measurements were performed and the students’ performance on a series of exercise was recorded: pre-treatment test, post-treatment test, and a follow-up test that was performed after a two-week gap. The results of the program were also evaluated with a "Confidence scale in equilibrium ability" (ABC Activities Specific Balance Confidence Scale, Powell & Myers, 1995) which was supplemented by the special treatment specialists and the parents.
Η επίδρασης της αλληλοπάθειας δασικών δέντρων στην εξάπλωση του είδους εισβολέα Solanum elaeagnifolium
Creators: name: Φορμόζης, Γεώργιος Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Δασολογία
Φυσικό περιβάλλον
Forestry
Natural environment

description: Η έρευνα αυτή πραγματοποιήθηκε για την διερεύνηση της αλληλοπάθειας που μπορεί να έχουν τα κυρίαρχα δασοπονικά είδη, που υπάρχουν σε χαμηλά και μέτρια υψόμετρα, στην αναπαραγωγική ικανότητα του είδους εισβολέα Solanum elaeagnifolium. Πραγματοποιήθηκαν πειράματα στο εργαστήριο με εκχυλίσματα που έγιναν από φύλλα των δασοπονικών ειδών Quercus pubescens, Pinus brutia, Quercus coccifera, Pinus halepensis και Cupressus sempervirens και με συγκεκριμένη συγκέντρωση. Σπόροι και μοσχεύματα ρίζας του Solanum elaeagnifolium ποτίζονταν με διάλυμα από το κάθε είδος και ελέγχθηκαν η φυτρωτικότητα και η ικανότητα ριζοβολίας τους. Οι σπόροι του είδους που ποτιζόταν με Quercus pubescens παρουσίασαν τη χαμηλότερη φύτρωση με ποσοστό 4%, ενώ ο μάρτυρας που ποτίζονταν με νερό παρουσίασε το υψηλότερο ποσοστό φύτρωσης με ποσοστό 21%. Επίσης η ικανότητα ριζοβολίας επηρεάστηκε από τους χειρισμούς που εφαρμόστηκαν; ο χειρισμός με την ορμόνη ριζοβολίας παρουσίασε το υψηλότερο ποσοστό 61,07%.
description: This study was conducted in order to examine the allelopathic effects that might have the dominant forest trees that occur on low and medium altitudes (zone of evergreen broadleaves) upon the reproductive capacity of Solanum elaeagnifolium species, one of the most invasive species worldwide. Laboratory experiments were carried out with aqueous extracts made out of leaves of Quercus pubescens, Pinus brutia, Quercus coccifera, Pinus halepensis and Cupressus sempervirens with a certain concentration. Seeds and root cuttings of the Solanum elaeagnifolium species were watered with each of the tree species extract and the germination behavior and rooting ability were studied. Seeds of Solanum elaeagnifolium subjected to Q. pubescens extract treatment presented the lowest germination with 4%, whilst control (distilled water) had the highest with 21.3%. Rooting ability of the cuttings was also affected by the treatments; the rooting hormone (control treatment) appeared to have the highest final rooting result with 61.07%.
Time-dependent Orbital-free Density Functional Theory: Background and Pauli kernel approximations
Creators: name: Jiang, Kaili
name: Pavanello, Michele
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Time-dependent orbital-free DFT is an efficient method for calculating the dynamic properties of large scale quantum systems due to the low computational cost compared to standard time-dependent DFT. We formalize this method by mapping the real system of interacting fermions onto a fictitious system of non-interacting bosons. The dynamic Pauli potential and associated kernel emerge as key ingredients of time-tependent orbital-free DFT. Using the uniform electron gas as a model system, we derive an approximate frequency-dependent Pauli kernel. Pilot calculations suggest that space nonlocality is a key feature for this kernel. Nonlocal terms arise already in the second order expansion with respect to unitless frequency and reciprocal space variable ($\fracω{q\, k_F}$ and $\frac{q}{2\, k_F}$, respectively). Given the encouraging performance of the proposed kernel, we expect it will lead to more accurate orbital-free DFT simulations of nanoscale systems out of equilibrium. Additionally, the proposed path to formulate nonadiabatic Pauli kernels presents several avenues for further improvements which can be exploited in future works to improve the results.
Phase separation of self-propelled disks with ferromagnetic and nematic alignment
Creators: name: Sesé-Sansa, Elena
name: Levis, Demian
name: Pagonabarraga, Ignacio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present a comprehensive study of a model system of repulsive self-propelled disks in two dimensions with ferromagnetic and nematic velocity alignment interactions. We characterize the phase behavior of the system as a function of the alignment and self-propulsion strength, featuring orientational order for strong alignment and Motility-Induced Phase Separation (MIPS) at moderate alignment but high enough self-propulsion. We derive a microscopic theory for these systems yielding a close set of hydrodynamic equations from which we perform a linear stability analysis of the homogenous disordered state. This analysis predicts MIPS in the presence of aligning torques. The nature of the continuum theory allows for an explicit quantitative comparison with particle-based simulations, which consistently shows that ferromagnetic alignment fosters phase separation, while nematic alignment does not alter either the nature or the location of the instability responsible for it. In the ferromagnetic case, such behavior is due to an increase of the imbalance of the number of particle collisions along different orientations, giving rise to the self-trapping of particles along their self-propulsion direction. On the contrary, the anisotropy of the pair correlation function, which encodes this self-trapping effect, is not significantly affected by nematic torques. Our work shows the predictive power of such microscopic theories to describe complex active matter systems with different interaction symmetries and sheds light on the impact of velocity-alignment interactions in Motility-Induced Phase Separation.
description: 18 pages, 12 figures
Το Πρόβλημα του Dirichlet και το Θεώρημα των Hayman-Wu
Creators: name: Παπαρίζος, Μιχαήλ Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Πρόβλημα Dirichlet
Θεώρημα Hayman-Wu
Αρμονικό μέτρο
Dirichlet Problem
Hayman-Wu Theorem
Harmonic measure

description: Ο κύριος στόχος αυτής της εργασίας είναι η παρουσίαση του προβλήματος του Dirichlet σε έναν τυχαίο τόπο Ω στο επίπεδο, δηλαδή αν δοθεί ένας τόπος Ω και μια συνάρτηση f στο σύνορο του Ω, το πρόβλημα του Dirichlet για την f στο Ω είναι η εύρεση μια αρμονικής συνάρτησης u στο Ω τέτοια ώστε η u να ισούται με την f. Θα το κάνουμε αυτό σε βήματα δίνοντας τη λύση σε συγκεκριμένους τόπους, όπως απλά συνεκτικούς και πεπερασμένα συνεκτικούς, και μετά γενικεύουμε σε τυχόντες τόπους παρουσιάζοντας τη λύση του Wiener. Το να λύσουμε το πρόβλημα του Dirichlet σε ένα τόπο Ω είναι ισοδύναμο με την κατασκευή αρμονικού μέτρου στο σύνορο του Ω. Έτσι, σε κάθε βήμα θα κατασκευάζουμε το αντίστοιχο αρμονικό μέτρο. Επίσης αποδεικνύουμε το Θεώρημα των Hayman-Wu. Η απόδειξη του είναι μια στοιχειώδης εφαρμογή του αρμονικού μέτρου και της υπερβολικής μετρικής.
description: The main goal of this thesis is to present the solution to the Dirichlet problem on an arbitrary plane domain Ω, that is, given a domain Ω and a function f on the boundary of Ω, the Dirichlet problem for f on Ω is to find a harmonic function u on Ω such that u equals f on the boundary Ω. We do this in steps by providing a solution on some specific plane domains, such simply and finitely connected domains, and then we generalize to arbitrary domains presenting Wiener's solution. Solving the Dirichlet problem on a domain Ω is equivalent to constructing harmonic measure on the boundary of Ω. Thus, in every step we will also construct the corresponding harmonic measure. We also prove the theorem of Hayman and Wu on lengths of level sets. Its proof is an elementary application of harmonic measure and the hyperbolic metric.
Magnification Control in Self-Organizing Maps and Neural Gas
Creators: name: Villmann, Thomas
name: Claussen, Jens Christian
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We consider different ways to control the magnification in self-organizing maps (SOM) and neural gas (NG). Starting from early approaches of magnification control in vector quantization, we then concentrate on different approaches for SOM and NG. We show that three structurally similar approaches can be applied to both algorithms: localized learning, concave-convex learning, and winner relaxing learning. Thereby, the approach of concave-convex learning in SOM is extended to a more general description, whereas the concave-convex learning for NG is new. In general, the control mechanisms generate only slightly different behavior comparing both neural algorithms. However, we emphasize that the NG results are valid for any data dimension, whereas in the SOM case the results hold only for the one-dimensional case.
description: 24 pages, 4 figures
Efficient conversion of closed-channel dominated Feshbach molecules of $^{23}$Na$^{40}$K to their absolute ground state
Creators: name: Bause, Roman
name: Kamijo, Akira
name: Chen, Xing-Yan
name: Duda, Marcel
name: Schindewolf, Andreas
name: Bloch, Immanuel
name: Luo, Xin-Yu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We demonstrate the transfer of $^{23}$Na$^{40}$K molecules from a closed-channel dominated Feshbach-molecule state to the absolute ground state. The Feshbach molecules are initially created from a gas of sodium and potassium atoms via adiabatic ramping over a Feshbach resonance at 78.3$\,$G. The molecules are then transferred to the absolute ground state using stimulated Raman adiabatic passage with an intermediate state in the spin-orbit-coupled complex $|c^3 Σ^+, v=35, J=1 \rangle \sim |B^1Π, v=12, J=1\rangle$. Our measurements show that the pump transition dipole moment linearly increases with the closed-channel fraction. Thus, the pump-beam intensity can be two orders of magnitude lower than is necessary with open-channel dominated Feshbach molecules. We also demonstrate that the phase noise of the Raman lasers can be reduced by filter cavities, significantly improving the transfer efficiency.
description: 8 pages, 7 figures
Minidisk dynamics in accreting, spinning black hole binaries: Simulations in full general relativity
Creators: name: Paschalidis, Vasileios
name: Bright, Jane
name: Ruiz, Milton
name: Gold, Roman
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We perform magnetohydrodynamic simulations of accreting, equal-mass binary black holes in full general relativity focusing on the impact of black hole spin on the dynamical formation and evolution of minidisks. We find that during the late inspiral the sizes of minidisks are primarily determined by the interplay between the tidal field and the effective innermost stable orbit around each black hole. Our calculations support that a minidisk forms when the Hill sphere around each black hole is significantly larger than the black hole's effective innermost stable orbit. As the binary inspirals, the radius of the Hill sphere decreases, and minidisk sconsequently shrink in size. As a result, electromagnetic signatures associated with minidisks may be expected to gradually disappear prior to merger when there are no more stable orbits within the Hill sphere. In particular, a gradual disappearance of a hard electromagnetic component in the spectrum of such systems could provide a characteristic signature of merging black hole binaries. For a binary of given total mass, the timescale to minidisk "evaporation" should therefore depend on the black hole spins and the mass ratio. We also demonstrate that accreting binary black holes with spin have a higher efficiency for converting accretion power to jet luminosity. These results could provide new ways to estimate black hole spins in the future.
description: 6 pages, 5 figures, matches published version
A new variational perturbation method for double well oscillators
Creators: name: Kim, Hyeong-Chan
name: Yee, Jae Hyung
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a variational perturbation method based on the observation that eigenvalues of each parity sector of both the anharmonic and double-well oscillators are approximately equi-distanced. The generalized deformed algebra satisfied by the invariant operators of the systems provides well defined Hilbert spaces to both of the oscillators. There appears a natural expansion parameter defined by the ratios of three distance scales of the trial wavefunctions. The energies of the ground state and the first order excited state, in the $0^{th}$ order variational approximation, are obtained with errors $<10^{-2}$% for vast range of the coupling strength for both oscillators. An iterative formula is presented which perturbatively generates higher order corrections from the lower order invariant operators and the first order correction is explicitly given.
description: 29 pages, 5 figures
Η ευθύνη των μελών του Δ.Σ. και των μέτοχων μη εισηγμένης ΑΕ έναντι του Δημοσίου
Creators: name: Νίκου, Παρασκευή Λυμπέρη
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Αστική ευθύνη
Φορολογικές οφειλές
Διοικητές
Civil liability
Tax debts
Directors

description: Σκοπός της παρούσας διπλωματικής εργασίας ήταν η εξέταση της αστικής ευθύνης των προσώπων που διοικούν μία Α.Ε., καθώς και των μετόχων αυτής, για οφειλές και χρέη του νομικού προσώπου προς το Δημόσιο. Στην εισαγωγή, έγινε μία σύντομη αναφορά στην αρχή της αυτοτέλειας του νομικού προσώπου. Στη συνέχεια, αναλύσαμε την ευθύνη των διοικητών και μετόχων μίας ΑΕ έναντι των φορολογικών αρχών. Εξετάσαμε, επίσης, τη φύση της ευθύνης αυτής απέναντι στην Τελωνειακή Διοίκηση και τα Ασφαλιστικά Ταμεία για παραβάσεις και οφειλές της εταιρίας. Τέλος, ασχοληθήκαμε με το ζήτημα της συμβατότητας με το ενωσιακό δίκαιο της στοιχειοθέτησης της ευθύνης των μετόχων μίας ΑΕ, που εκμεταλλεύεται τηλεοπτικό σταθμό.
description: The aim of the present thesis was to examine the civil liability of the persons managing the S.A. and its shareholders for debts of the legal entity to the State. In the introduction, a brief reference was made to the principle of legal personality. Then we analyzed the liability of the directors and shareholders of the S.A. to the tax authorities. Furthermore, we examined the nature of this liability towards the Customs Administration and the Insurance Funds for breaches and debts of the company. In the last chapter, we examined the compatibility of the liability of the shareholders of a public limited company operating television station with EU law.
Supplementary Information for "Exploring Rubiaceae fungal endophytes across contrasting tropical forests, tree tissues, and developmental stages"
Creators: name: Chaverri, Priscila
Publisher: name: Zenodo
Year: 2024

description: Supplementary Information for "Exploring Rubiaceae fungal endophytes across contrasting tropical forests, tree tissues, and developmental stages"

 

Supplementary Table S1. List of putative plant species collected based on morphology. In bold

are the species collected twice.

Supplementary Methods S2.

Supplementary Table S3. Taxonomic assignment (7 ranks) of all ASVs identified in the

dataset, plus their functional traits, can be found publicly available on the Github repository

https://github.com/humb15/RuFEnTroFo.

Supplementary Figure S4. Species accumulation and diversity curves for endophytes sampled

from (A) young leaves (YL), mature leaves (ML) and sapwood (Sa) tissues, and; (B) Golfito and

Guanacaste forests. Metrics include richness (q = 0), Shannon (q = 1) and Simpson (q = 2).

Supplementary Figure S5. NMDS of Bray Curtis distances showing the distribution of

endophytic community assemblages according to (A) genus within tribes and (B) tribes within

subfamilies.

Supplementary Table S6. List of identified fungal families among endophyte communities.

Supplementary Figure S7. CCA analysis for correlation between Amplicon Single Variants

distribution and environmental variables: Elevation, Annual Mean Temperature and Annual

Precipitation). Red crosses represent ASVs and black circles represent samples. p-values:

Elevation 0.001, AMT 0.073, AP 0.119; CCA1 0.007, CCA2 0.143.

Supplementary Table S8. Mantel correlation values for community dissimilarity and geographic

and environmental factors. Based on Spearman, p-value reported.

Supplementary Figure S9. Distance decay of taxonomic similarity along spatial distance, every

point represents pairwise similarities between samples. Panels A: combined; B: Golfito; C:

Guanacaste.

Supplementary Figure S10. Main lifestyles (primary and secondary) of the genera identified

among the top 12 families.
Relativistic corrections to decays of heavy baryons in the quark model
Creators: name: Arifi, Ahmad Jafar
name: Suenaga, Daiki
name: Hosaka, Atsushi
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate relativistic corrections of order $1/m^{2}$, where $m$ is the constituent quark mass, to heavy baryon decays by emitting one pseudoscalar meson in the quark model. This work is motivated by shortcomings in the previous studies in the nonrelativistic quark model for decays of the Roper-like states such as $Λ_c(2765)$. We find that the relativistic corrections due to the internal motion of quarks are essential ingredients in improving their decay properties such that the decay widths are significantly increased. In addition, such corrections can explain a phenomenological suppression of the quark axial-vector coupling constant $g_A^q$ for the $Σ_c(2455)$ and $Σ_c(2520)$ decays.
description: 6 pages, 1 figure, 2 tables
Preparation for mathematical competitions: training team, courses, camps, etc.
Creators: name: Harizanov, Stanislav
Publisher: name: Zenodo
Year: 2022
Subjects: mathematical competitons

description: Harizanov_ISPAS_Module4_2021: "Preparation for mathematical competitions: training team, courses, camps, etc.". This talk is devoted to the Bulgarian experience and traditions in preparation camps for the most important international math competitions: IMO, BMO, RMM, and EGMO. Brief statistical data, regarding the overall Bulgarian participation in each of the four main competitions is also included.
Σύνθεση μικροταινιακών και ομοεπίπεδων Chipless RFID Ετικετών Επανεκπομπής με κωδικοποίηση πληροφορίας στο πεδίο της συχνότητας
Creators: name: Πετρίδης, Παναγιώτης Μιλτιάδη
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Ραδιοσυχνότητες
Ετικέτες Επανεκπομπής χωρίς ολοκληρωμένο κύκλωμα
Υπερευρυζωνική κεραία
Radiofrequency
Chipless RFID (Radiofrequency Identification) tag retransmission based
UltraWideband antenna

description: Η ταυτοποίηση με ραδιοσυχνότητες (RFID) είναι μια αναδυόμενη και ταχύτατα εξελισσόμενη ασύρματη τεχνολογία για αυτόματη ταυτοποίηση, παρακολούθηση, ασφάλεια και επιτήρηση, διαχείριση βάσεων δεδομένων, και τον έλεγχο σε εφοδιαστικές αλυσίδες. Στην παρούσα εργασία πραγματοποιήθηκε σύνθεση μιας συγκεκριμένης κατηγορίας ετικετών RFID χωρίς Ολοκληρωμένο Κύκλωμα(Chipless RFID), η ετικέτα RFID τύπου επανεκπομπής, η οποία χρησιμοποιείται για ταυτοποίηση αντικειμένων και λειτουργεί με κωδικοποίηση στο πεδίο της συχνότητας. Δομήθηκαν και προτείνονται δύο μορφές ετικετών του τύπου αυτού. Καί στις δύο, η κωδικοποίηση πραγματοποιείται με ζωνοαπορριπτικά φίλτρα δομημένα με συντονιστές φρακταλικής μορφής α) μικροταινιακής δομής και β) δομής ομοεπίπεδου κυματοδηγού. Τα φίλτρα σχεδιάστηκαν ώστε να παρέχουν κώδικες των 4 bits. Πραγματοποιήθηκε σύνθεση ευρυζωνικών κεραιών μικροταινιακού τύπου και τύπου σχισμής με ομοεπίπεδη τροφοδοσία ώστε η κάθε μια να συνδυάζεται με το αντίστοιχου τύπου φίλτρο. Η σύνθεση των ετικετών πραγματοποιήθηκε με τα παραπάνω δομικά στοιχεία, και με δεδομένα από προσομοιώσεις λειτουργίας τους υπολογίστηκε η μέγιστη απόσταση ανάγνωσης για κάθε ένα από τους 16 συνολικά κώδικες σε συνάρτηση με τις προδιαγραφές του συστήματος του αναγνώστη. Σύμφωνα με τα τελικά αποτελέσματα οι ετικέτες που σχεδιάστηκαν είναι αναγνώσιμες έως και σε αποστάσεις 44cm αναλόγως των δυνατοτήτων του συστήματος του αναγνώστη
description: Radio Frequency Identification (RFID) is an emerging and rapidly evolving wireless technology for automatic identification, monitoring, security and surveillance, database management, and control over supply chains. In this work, a specific class of RFID tags without Chip, the Retransmission based RFID tags, were synthesized and can be used for object identification and have a frequency domain encoding. Two structures of tags of this type have been constructed and proposed. In both types, the encoding is performed with stopband filters based on fractal resonators of a) a microstip structure and b) a co-planar waveguide structure. The filters were designed to provide a 4-bit encoding. A microstip-type and a slot-type of ultrawideband antennas composition was made with a co-planar feed, to pair with each corresponding filter type. Tag composition was carried out with the above building blocks, and based on their operating simulation data, the maximum read distance for each of the 16 total codes was calculated according to the reader system specifications. According to the final results, the two tags that were designed are readable up to 44cm distances depending on the reader’s system capabilities