cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On the group of unit-valued polynomial functions
Creators: name: Al-Maktry, Amr Ali
Publisher: name: arXiv
Year: 2020
Subjects: subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics

description: Let $R$ be a finite commutative ring with $1\ne 0$. The set $\mathcal{F}(R)$ of polynomial functions on $R$ is a finite commutative ring with pointwise operations. Its group of units $\mathcal{F}(R)^\times$ is just the set of all unit-valued polynomial functions, that is the set of polynomial functions which map $R$ into its group of units. We show that $\mathcal{P}_R(R[x]/(x^2))$ the group of polynomial permutations on the ring $R[x]/(x^2)$, consisting of permutations represented by polynomials over $R$, is embedded in a semidirect product of $\mathcal{F}(R)^\times$ by $\mathcal{P}(R)$ the group of polynomial permutations on $R$. In particular, when $R=\mathbb{F}_q$, we prove that $\mathcal{P}_{\mathbb{F}_q}(\mathbb{F}_q[x]/(x^2))\cong \mathcal{P}(\mathbb{F}_q) \ltimes_θ\mathcal{F}(\mathbb{F}_q)^\times$. Furthermore, we count unit-valued polynomial functions $\pmod{p^n}$ and obtain canonical representations for these functions.
ERRATA
Creators: name: Farooq, Mustafa
Publisher: name: Continental Journal of Microbiology
Year: 2024

description: Abstract

Neurosurgical implants, including cranioplasty plates, cerebrospinal fluid shunts, and neuromodulation devices, play a crucial role in the treatment of neurological disorders. However, these implants also present a significant risk for microbial colonization and biofilm formation, leading to persistent infections that are difficult to treat. Biofilms, complex communities of bacteria encased in an extracellular matrix, protect microorganisms from antibiotics and immune responses, often resulting in implant failure, severe infections, and increased morbidity. This review explores the microbial mechanisms underlying biofilm formation on neurosurgical implants and evaluates contemporary strategies for prevention and treatment. Key bacterial species implicated in biofilm formation include Staphylococcus aureus, Staphylococcus epidermidis, and Pseudomonas aeruginosa, which use specific adhesins and quorum sensing to establish and regulate biofilms. The challenges of treating biofilm-related infections are highlighted by the bacteria’s ability to become up to 1,000 times more resistant to antibiotics when embedded in biofilms. Traditional treatments, such as high-dose antibiotics or surgical removal of the infected implant, are often insufficient, prompting a need for innovative solutions. Recent advances in material science, including surface modifications and the incorporation of antimicrobial agents like silver nanoparticles, have shown promise in reducing bacterial adhesion and biofilm development. Cold Atmospheric Plasma (CAP), a novel technology, has demonstrated the ability to disrupt established biofilms by generating reactive species that damage bacterial cells without harming surrounding tissues. CAP, along with other emerging technologies such as bacteriophage therapy and stimuli-responsive materials, presents potential therapeutic avenues for preventing and treating implant-associated infections. Additionally, enhanced diagnostic techniques and preventive measures, such as antibiotic-impregnated implants and antimicrobial coatings, are critical to reducing the incidence of biofilm formation. As biofilm-related infections on neurosurgical implants remain a significant clinical challenge, this review underscores the importance of continued innovation in materials science and biofilm disruption technologies to improve patient outcomes in neurosurgery.
Filling functions
Creators: name: Riley, T. R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20Fxx

description: Filling functions are asymptotic invariants of finitely presentable groups; the seminal work on the subject is by M.Gromov. They record features of combinatorial homotopy discs (van Kampen diagrams) filling loops in Cayley 2-complexes. Examples are the Dehn (or isoperimetric) function, the filling length function and the intrinsic diameter (or isodiametric) function. We discuss filling functions from geometric, combinatorial and computational points of view, we survey their interrelationships, and we sketch their roles in the studies of nilpotent groups, hyperbolic groups and asymptotic cones. Many open questions are included. This is a set of notes for a workshop on "The Geometry of the Word Problem" at the Centre de Recerca Matematica, Barcelona in July 2005. It will be part of a Birkhauser-Verlag volume in the "Advanced Courses in Mathematics CRM Barcelona" series.
description: 74 pages, 19 figures
Landscape of Machine Implemented Ethics
Creators: name: Nallur, Vivek
Publisher: name: arXiv
Year: 2020
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: This paper surveys the state-of-the-art in machine ethics, that is, considerations of how to implement ethical behaviour in robots, unmanned autonomous vehicles, or software systems. The emphasis is on covering the breadth of ethical theories being considered by implementors, as well as the implementation techniques being used. There is no consensus on which ethical theory is best suited for any particular domain, nor is there any agreement on which technique is best placed to implement a particular theory. Another unresolved problem in these implementations of ethical theories is how to objectively validate the implementations. The paper discusses the dilemmas being used as validating 'whetstones' and whether any alternative validation mechanism exists. Finally, it speculates that an intermediate step of creating domain-specific ethics might be a possible stepping stone towards creating machines that exhibit ethical behaviour.
description: 25 pages
The Search for Stellar Companions to Exoplanet Host Stars Using the CHARA Array
Creators: name: Baines, Ellyn K.
name: McAlister, Harold A.
name: Brummelaar, Theo A. ten
name: Turner, Nils H.
name: Sturmann, Judit
name: Sturmann, Laszlo
name: Ridgway, Stephen T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Most exoplanets have been discovered via radial velocity studies, which are inherently insensitive to orbital inclination. Interferometric observations will show evidence of a stellar companion if it sufficiently bright, regardless of the inclination. Using the CHARA Array, we observed 22 exoplanet host stars to search for stellar companions in low-inclination orbits that may be masquerading as planetary systems. While no definitive stellar companions were discovered, it was possible to rule out certain secondary spectral types for each exoplanet system observed by studying the errors in the diameter fit to calibrated visibilities and by searching for separated fringe packets.
description: 26 pages, 5 tables, 8 figures
Κοινωνικές αναπαραστάσεις εκπαιδευτικών για την εκπαίδευση δίγλωσσων μαθητών: Διδασκαλία, πρακτικές, σχολική ένταξη. Σύγκριση εκπαιδευτικών διαπολιτισμικού και γενικού δημοτικού σχολείου
Creators: name: Καρρά, Αικατερίνη Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Κοινωνικές αναπαραστάσεις
Δίγλωσσοι μαθητές
Εκπαιδευτικοί δημοτικού σχολείου
Social representations
Bilingual students
Teachers of primary education

description: Η παρούσα μεταπτυχιακή εργασία μελετά τις κοινωνικές αναπαραστάσεις των εκπαιδευτικών του δημοτικού σχολείου για τους δίγλωσσους μαθητές και ανιχνεύει τις πρακτικές που εφαρμόζουν οι εκπαιδευτικοί για τη διδασκαλία της ελληνικής ως δεύτερης γλώσσας αλλά και για την προώθηση της ένταξης των δίγλωσσων μαθητών. Αρχικά, παρουσιάζεται το θεωρητικό υπόβαθρο για τις έννοιες της διαπολιτισμικής εκπαίδευσης, της διγλωσσίας και των κοινωνικών αναπαραστάσεων. Στη συνέχεια παρουσιάζονται τα αποτελέσματα από την ποιοτική έρευνα που διενεργήθηκε με τη χρήση συνεντεύξεων σε δείγμα δεκαοχτώ εκπαιδευτικών από δύο σχολεία, ένα διαπολιτισμικό και ένα γενικής εκπαίδευσης. Στο τέλος, διατυπώνονται τα συμπεράσματα που προέκυψαν από την εν λόγω έρευνα και γίνεται ανάλυση τους σε σχέση με τη σχετική βιβλιογραφία.
description: Τhe present master thesis studies the social representations of primary school’s teachers for the bilingual students. It also examines the practices applied from teachers for the teaching of the greek language as second language and for the promotion of the school integration of bilingual students. Initially, we present the theoretical background of the concepts intercultural education, bilingualism and social representations. Then we present the results of the qualitative research that was conducted by interviewing a sample of eighteen teachers from two primary schools, one of intercultural education and one of general education. Finally, the conclusions that came out from the aforementioned research are being presented and analyzed in relation with the relevant bibliography.
description: Συνεργαζόμενα Τμήματα Πανεπιστήμιο Λε Μαν (Maine France, Γαλλία)
Spin and chirality orderings of the one-dimensional Heisenberg spin glass with the long-range power-law interaction
Creators: name: Matsuda, Akihiro
name: Nakamura, Mitsuru
name: Kawamura, Hikaru
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The ordering of the one-dimensional Heisenberg spin glass interacting via the long-range power-law interaction is studied by Monte Carlo simulations. Particular attention is paid to the possible occurrence of the ``spin-chirality decoupling'' for appropriate values of the power-law exponent σ. Our result suggests that, for intermediate values of $σ$, the chiral-glass order occurs at finite temperatures while the standard spin-glass order occurs only at zero temperature.
description: Proceedings of the Highly Frustrated Magnetism (HFM2006) conference. To appear in a special issue of J. Phys. Condens. Matter
Random Walk of Bipartite Spins in a Classicalized Holographic Tensor Network
Creators: name: Konishi, Eiji
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the random walk of spin-zero bipartite spins in the classicalized holographic tensor network of the ground state of a strongly coupled two-dimensional conformal field theory. The bipartite-spin distribution induces a metric in this network. In the steady state of the random walk, the induced metric gives the two-dimensional anti-de Sitter (AdS$_2$) space metric. We consider this distribution as a microscopic statistical model of the AdS$_2$ space metric.
description: 3 pages, revtex
Zero permeability and zero permittivity band gaps in 1D metamaterial photonic crystals
Creators: name: Depine, Ricardo A.
name: Ricci, Maria L. Martinez
name: Monsoriu, Juan A.
name: Silvestre, Enrique
name: Andres, Pedro
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We consider layered heterostructures combining ordinary positive index materials and dispersive metamaterials. We show that these structures can exhibit a new type of photonic gap around frequencies where either the magnetic permeability μor the electric permittivity εof the metamaterial is zero. Although the interface of a semi-infinite medium with zero refractive index (a condition attained either when μ= 0 or when ε= 0) is known to give full reflectivity for all incident polarizations, here we show that a gap corresponding to μ= 0 occurs only for TE polarized waves, whereas a gap corresponding to ε= 0 occurs only for TM polarized waves. These band gaps are scale-length invariant and very robust against disorder, although they may disappear for the particular case of propagation along the stratification direction.
description: 7 pages, 5 figures
Η Καλλιτεχνική Αγωγή στην Εκπαίδευση: Το Πρόγραμμα ΜΕΛΙΝΑ:
Creators: name: Βότσου, Ευφημία Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Καλλιτεχνική Αγωγή
Πολιτισμική Αγωγή
Πρόγραμμα ΜΕΛΙΝΑ – Εκπαίδευση και Πολιτισμός
Art Education
Cultural Education
MELINA Project - Education and Culture

description: Η δημιουργία ενός κεντρικού σκελετού Πολιτισμικής Αγωγής στην Εκπαίδευση, αποτελεί σημαντική βάση απελευθέρωσης του ατόμου αλλά και του ίδιου του συναισθηματικού δυναμικού του. Ο Πολιτισμός και ο τρόπος που επικοινωνείται εκφράζει πτυχές της Παιδείας μας και το πρόγραμμα που τέθηκε σε εφαρμογή από το Υπουργείο Πολιτισμού, το Υπουργείο Εθνικής Παιδείας και Θρησκευμάτων και τη Μελίνα Μερκούρη, μας έδωσε την ευκαιρία να αναμετρηθούμε με αυτούς ακριβώς τους σύγχρονους προβληματισμούς. Μας προσέφερε την απαιτούμενη ασφαλώς εκπαιδευτική σύσταση, εμπλούτισε κάθε ένα από τα μαθήματα με την πολιτισμική του διάσταση, παρήγε ευκαιρίες να γνωρίσουμε αυτό που καμιά φορά αναπαραγόταν «ξύλινα» αλλά μας προβλημάτισε κιόλας, δημιουργώντας εκείνο το γρίφο της αποτυχίας με τους προκαθορισμένους στόχους ενός αναλυτικού προγράμματος. Το Πρόγραμμα ΜΕΛΙΝΑ προσπάθησε, επεδίωξε και δημιούργησε καινοτόμες υποθέσεις. Ίσως πέρα από το όνομα της δημιουργού-εμπνευστή, να πήρε και το ιδιοσυγκρασιακό, αντισυμβατικό του χαρακτήρα της. Η διπλωματική αυτή εργασία ολοκληρώθηκε με τη βαθιά πίστη στην Πολιτισμική Αγωγή και του τρόπου που επικοινωνούμε μέσω αυτής.
description: The creation of a general axis of Cultural Education in school teaching is vital to a person’s liberation and emotional dynamic. Civilization and the way it is communicated finds its expression in our Educational system. The project initiated by the Ministry of Culture, the Ministry of Education and by Melina Mercouri herself gave us the chance to face the above mentioned modern anxieties. It offered us a necessary educational consistence, it enriched every course with educational content and it made us ponder. Last, it offered us chances to know in depth things that have so far been mechanically reproduced and which were, on their turn, responsible for that famous failure riddle connected with the pre- set objectives of an analytic curriculum. Melina Project tried and succeeded in creating innovative approaches and procedures. Most probably, it drew not only on the name of its creator but also on her idiosyncratic, unconventional character. This master thesis was developed with a deep faith in Cultural Education and the channels of communication it provides.
Digital laser frequency and intensity stabilization based on the STEMlab platform (originally Red Pitaya)
Creators: name: Preuschoff, Tilman
name: Schlosser, Malte
name: Birkl, Gerhard
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report on the development, implementation, and characterization of digital controllers for laser frequency stabilization as well as intensity stabilization and control. Our design is based on the STEMlab (originally Red Pitaya) platform. The presented analog hardware interfaces provide all necessary functionalities for the designated applications and can be integrated in standard 19-inch rack mount units. Printed circuit board layouts are made available as an open-source project.\cite{APQGit_Lockbox,APQGit_IntStab} A detailed characterization shows that the bandwidth 1.25 MHz and the noise performance of the controllers are limited by the STEMlab system and not affected by the supplementary hardware. Frequency stabilization of a diode laser system resulting in a linewidth of 52(1) kHz (FWHM) is demonstrated. Intensity control to the $10^{-3}$ level with sub-microsecond rise and fall times based on an acousto-optic modulator as actuator is achieved.
A Consistent Prescription for Combining Perturbative Calculations and Parton Showers in Case of Associated Z b anti-b Hadroproduction
Creators: name: Kersevan, B. P.
name: Hinchliffe, I.
name: Mijovic, L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This paper presents the method of combining parton shower formalism with perturbative calculations (matrix elements) in form of a Monte-Carlo algorithm for the process g g -> Z b anti-b,consistenlty including the heavy quark masses and overlap removal.
description: accepted by JHEP, revised according to suggestions from JHEP referee
Melvin universe as a limit of the C-metric
Creators: name: Havrdova, Lenka
name: Krtous, Pavel
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is demonstrated that the Melvin universe representing the spacetime with a strong 'homogeneous' electric field can by obtained from the spacetime of two accelerated charged black holes by a suitable limiting procedure. The behavior of various invariantly defined geometrical quantities in this limit is also studied.
description: 5 pages, no figures [v2: two references added]
Intersecting topological nodal ring and nodal wall states in superhard superconductor FeB4
Creators: name: Zhou, Feng
name: Liu, Ying
name: Wang, Jianhua
name: Yang, Tie
name: Chen, Hong
name: Wang, Xiaotian
name: Cheng, Zhenxiang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Novel materials with both topological nontrivial states and superconductivity have attracted considerable attention in recent years. Single-crystal FeB4 was recently synthesized and demonstrated to exhibit superconductivity at temperatures lower than 2.9 K, and its nanoindentation hardness was measured to be 65 GPa. In this study, based on first-principles calculation and the low-energy kp effective Hamiltonian, we found that this Pnnm-type superhard FeB4 superconductor hosts topological behaviors with intersecting nodal rings (INRs) in the k_x=0 and k_z=0 planes and nodal wall states in the k_y= π and k_z= π planes. The observed surface drum-head-like (D-H-L) states on the [100] and [001] surfaces confirmed the presence of INR states in this system. According to our investigation results, FeB4, with its superconductivity, superior mechanical behaviors, one-dimensional (1D) and two-dimensional topological elements, and D-H-L surface states, is an existing single-phase target material that can be used to realize the topological superconducting state in the near future.
description: 6 page, 8 figures
Πρώιμη ανίχνευση ψυχοκινητικών δυσκολιών παιδιών προσχολικής ηλικίας:
Creators: name: Ζαγοριανού, Ελένη-Μιχαλία Μιχαήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Πρώιμη ανίχνευση
Ψυχοκινητικές δυσκολίες
Προσχολική ηλικία
Early detection
Psychomotor difficulties
Preschoolers

description: Σκοπός της διατριβής ήταν η πρώιμη ανίχνευση δυσκολιών ψυχοκινητικού τύπου σε παιδιά προσχολικής ηλικίας που φοιτούν στα νηπιαγωγεία της Ρόδου. Εξετάσαμε τη βιβλιογραφία σχετικά με τις θεωρίες ανάπτυξης και την ψυχοκινητική ανάπτυξη των παιδιών προσχολικής ηλικίας. Συζητήσαμε με τους εκπαιδευτικούς προσχολικής αγωγής για τις τυπικές χαρακτηριστικές εκδηλώσεις που παρουσιάζουν τα παιδιά με ψυχοκινητικές δυσκολίες και τους ζητήσαμε να συμπληρώσουν ένα ερωτηματολόγιο για κάθε έναν από τους μαθητές τους, που παρουσίαζαν κάποια από αυτά τα χαρακτηριστικά. Στη συνέχεια μελετήσαμε το δείγμα μας και πως αυτό διαφοροποιείται σε σχέση με το φύλο, το κοινωνικοπολιτισμικό επίπεδο και τη σύνθεση της οικογένειας. Διαπιστώθηκε πως τα κορίτσια υπερισχύουν έναντι των αγοριών σε δεξιότητες λεπτής κινητικότητας και οπτικοκινητικού συντονισμού. Το δείγμα δεν φάνηκε να διαφοροποιείται στατιστικά σημαντικά σε σχέση με το μορφωτικό επίπεδο των γονέων, όπως επίσης δεν παρουσίασε καμία τάση διαφοροποίησης σχετικά με την ύπαρξη αδελφών ή τη σειρά γέννησης του παιδιού. Ωστόσο η οικονομική κατάσταση της οικογένειας, το επάγγελμα του πατέρα και της μητέρας αντίστοιχα φάνηκε να διαφοροποιούν το δείγμα σε στατιστικά σημαντικό βαθμό.
description: The aim of the study was the early detection of psychomotor difficulties of preschoolers attending Rhodes kindergartens. We examined the literature on theories of development and psychomotor development of children of preschool age. We discussed with preschool teachers for typical characteristic events of children with psychomotor difficulties and asked them to complete a questionnaire for each of their students who had any of these characteristics. Then we studied our sample and how it varies in relation to gender, sociocultural level and family composition. It was found that girls prevail against the boys in fine motor skills and visual-motor coordination. The sample did not appear to vary significantly with respect to the educational level of the parents, as well showed no voltage modulation on the existence of siblings or birth order of the child. However, the economic situation of the family, occupation of father and mother respectively seemed to differentiate the sample significantly.
Εμπορία ανθρωπίνων οργάνων για μεταμόσχευση: το κοινωνικό φαινόμενο και η ποινική του αντιμετώπιση
Creators: name: Δαλακούρα, Αικατερίνη Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Μεταμόσχευση
Όργανα
Εμπόριο
Transplantation
Organs
Trafficking

description: Σκοπός της παρούσας μεταπτυχιακής εργασίας ήταν η μελέτη του προβλήματος της εμπορίας ανθρωπίνων οργάνων για μεταμόσχευση, μέσα από το πρίσμα της κοινωνικής και της ποινικής του διάστασης. Στο πρώτο μέρος καταγράφηκε η ιστορία των μεταμοσχεύσεων στην Ελλάδα και στον κόσμο, καταγράφηκαν τα βασικά χαρακτηριστικά του ισχύοντος νομικού πλαισίου, οι βασικές έννοιες και τα αίτια του φαινομένου της εμπορίας οργάνων ενώ έγινε αναφορά και στον «μεταμοσχευτικό τουρισμό». Στο δεύτερο μέρος, αναπτύχθηκαν τα ιατρικά και ηθικοφιλοσοφικά ζητήματα που άπτονται του θέματος και συγκεκριμένα έγινε αναφορά στα ιατρικά επιτεύγματα στον τομέα των τεχνητών μοσχευμάτων και των ξενομοσχευμάτων, τέθηκαν ζητήματα νομιμοποίησης της αγοραπωλησίας οργάνων και εκτέθηκαν τρόποι αύξησης των μοσχευμάτων μέσω των διαφόρων συστημάτων συναίνεσης. Στο τρίτο και τελευταίο κεφάλαιο ασχοληθήκαμε με τα αμιγώς νομικά ζητήματα του θέματος βάσει του διεθνούς και ιδιαίτερα του ελληνικού νομικού πλαισίου.
description: The aim of this thesis was to study the problem of trafficking in human organs for transplantation, through the prism of social and criminal dimension. In the first part we have the history of transplants in Greece and around the world, the basic features of the current legal framework, basic concepts and causes of the phenomenon and we refer to "transplant tourism" as well. In the second part, we expose medical and ethical issues attached to the phenomenon and we refer to medical advances in artificial grafts and xenografts. We also refer to the possibility of the legitimation of an international “market” of human organs. In the third and final chapter we deal with legal issues of the subject under the international and especially the Greek legal framework.
Η ποινική προστασία των ανηλίκων στα εγκλήματα κατά της γενετήσιας ελευθερίας:
Creators: name: Καρέλη, Παρασκευή Μιχαήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Ανήλικοι
Γενετήσια ελευθερία
Σεξουαλικά εγκλήματα
Minors
Sexual freedom
Sex crimes

description: Οι ανήλικοι συχνά καθίστανται θύματα διαφόρων εγκληματικών πράξεων, είτε από συνομηλίκους τους είτε από ενήλικες. Στις εγκληματικές αυτές πράξεις ανήκουν κατά πλειοψηφία οι περιπτώσεις των λεγόμενων «σεξουαλικών» ή «γενετήσιων» εγκλημάτων, όπως είναι η αποπλάνηση ανηλίκου, η πορνογραφία ανηλίκου και άλλες περιπτώσεις διακινδύνευσης ή βλάβης του αγαθού της ανήλικης γενετήσιας ή σεξουαλικής ελευθερίας, κάτι που στις μέρες μας έχει λάβει ανησυχητικές διαστάσεις και φαίνεται να έχει αυξητική τάση. Το φαινόμενο αυτό επιχειρεί να αντιμετωπίσει η Εθνική και η Διεθνής Νομοθεσία, μέσα από μία σειρά κειμένων. Ο Έλληνας Ποινικός Νομοθέτης καθιερώνει εγκλήματα κατά της γενετήσιας ελευθερίας, όπως τα ονομάζει, στο 19ο άρθρο του Ποινικού μας Κώδικα. Την τυποποίηση των εγκλημάτων αυτών που επιλέγει λοιπόν να κάνει ο Έλληνας Νομοθέτης προσπαθήσουμε να μελετήσουμε με την παρούσα εργασία. Αναφέρουμε τα ζητήματα που ανακύπτουν από την εξέταση των εν λόγω εγκλημάτων, όπως για παράδειγμα το προστατευόμενο έννομο αγαθό, γύρω από το οποίο έχουν διατυπωθεί διάφορες απόψεις. Τέλος, μελετάμε τα περαιτέρω ζητήματα που αφορούν τη σχέση των θεσμών και των διατάξεων του Γενικού Ποινικού Δικαίου με τις διατάξεις του 19ου κεφαλαίου του Ελληνικού Ποινικού Κώδικα, και κυρίως τις περιπτώσεις συρροής μεταξύ εγκλημάτων που τυποποιούν περιπτώσεις που θίγουν τη γενετήσια ελευθερία ανηλίκων με άλλα εγκλήματα τα οποία τυποποιούν το αντίστοιχο έγκλημα για όλα τα θύματα, ανεξαρτήτως ηλικίας.
description: Minors often become victims of various crimes, either by peers or by adults. In these criminal acts in majority pertain cases of the so-called "sexual" crimes, such as child enticement, child pornography and other forms of risk or harm to the property of underage sexual freedom, which nowadays has reached alarming proportions and seems to be growing. This phenomenon is attempting to address the National and International Legislation, through a series of texts. The Greek Penal Lawmaker establishes crimes against sexual freedom, as they are called, in the 19th chapter of our Criminal Code. The standardization of these crimes that the Greek Lawmaker chose to make is what we try to study with this task. We report the issues arising from the consideration of such crimes, such as the protected legal interest, around which various opinions have been expressed. Finally, we study further issues concerning the relationship between the institutions and the provisions of the General Penal Law with the 19th chapter of the Greek Penal Code, particularly in cases of overlapping between crimes that typify cases affecting the sexual freedom of children to other crimes which typify the corresponding crime for all victims, regardless of age.
The Square Kilometre Array: A new probe of cosmic magnetism
Creators: name: Gaensler, Bryan M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Magnetic fields are a fundamental part of many astrophysical phenomena, but the evolution, structure and origin of magnetic fields are still unresolved problems in physics and astrophysics. When and how were the first fields generated? Are present-day magnetic fields the result of standard dynamo action, or do they represent rapid or recent field amplification through other processes? What role do magnetic fields play in turbulence, cosmic ray acceleration and structure formation? I explain how the Square Kilometre Array (SKA), a next-generation radio telescope, can deliver stunning new data-sets that will address these currently unanswered issues. The foundation for these experiments will be an all-sky survey of rotation measures, in which Faraday rotation toward >10^7 background sources will provide a dense grid for probing magnetism in the Milky Way, nearby galaxies, and in distant galaxies, clusters and protogalaxies. Using these data, we can map out the evolution of magnetized structures from redshifts z > 3 to the present, can distinguish between different origins for seed magnetic fields in galaxies, and can develop a detailed model of the magnetic field geometry of the intergalactic medium and of the overall Universe. In addition, the SKA will certainly discover new magnetic phenomena beyond what we can currently predict or imagine.
description: 8 pages, 3 embedded figures, 1 jpeg figure. To appear in special issue of Astronomische Nachrichten, "The Origin and Evolution of Cosmic Magnetism", eds. R. Beck et al
Towards atomic-resolution quantum measurements with coherently-shaped free electrons
Creators: name: Ruimy, Ron
name: Gorlach, Alexey
name: Mechel, Chen
name: Rivera, Nicholas
name: Kaminer, Ido
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Free electrons provide a powerful tool to probe material properties at atomic-scale spatial resolution. Recent advances in ultrafast electron microscopy enable the manipulation of free electron wavefunctions using laser pulses. It would be of great importance if one could combine the spatial resolution of electron probes with the ability of laser pulses to probe coherent phenomena in quantum systems. To this end, we propose a novel technique that leverages free electrons that are coherently-shaped by laser pulses to measure quantum coherence in materials. Developing a quantum theory of electron-qubit interactions in materials, we show how the energy spectrum of laser-shaped electrons enables measuring the qubit Block-sphere state and decoherence time (T2). Finally, we present how such shaped electrons can detect and quantify superradiance from multiple qubits. Our scheme could be implemented in an ultrafast transmission electron microscope (UTEM), opening the way towards the full characterization of the state of quantum systems at atomic-scale resolution.
description: 6 main text sections and 8 SM sections, 4 main text figures and 2 SM figures
Single-qubit lasing and cooling at the Rabi frequency
Creators: name: Hauss, Julian
name: Fedorov, Arkady
name: Hutter, Carsten
name: Shnirman, Alexander
name: Schön, Gerd
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: For a superconducting qubit driven to perform Rabi oscillations and coupled to a slow electromagnetic or nano-mechanical oscillator we describe previously unexplored quantum optics effects. When the Rabi frequency is tuned to resonance with the oscillator the latter can be driven far from equilibrium. Blue detuned driving leads to a population inversion in the qubit and a bi-stability with lasing behavior of the oscillator; for red detuning the qubit cools the oscillator. This behavior persists at the symmetry point where the qubit-oscillator coupling is quadratic and decoherence effects are minimized. There the system realizes a "single-atom-two-photon laser".
description: Replaced with final published version, fig. 2 compressed
ELIXIR-EXCELERATE D13.4 The impact of the Innovation and SME Programme on industry users
Creators: name: Lauer, Katharina
name: Smith, Andrew
Publisher: name: Zenodo
Year: 2019
Subjects: ELIXIR
EXCELERATE
Industry
SME
Innovation
SME Forum

description: ELIXIR’s Industry Strategy sets out the objectives that guide the way in which ELIXIR interacts with and provides support to industry. It is articulated around five objectives: 1) Increase industry usage of ELIXIR resources and ensure that name is synonymous with quality 2) Enable Open innovation by Europe’s SMEs 3) Build effective partnerships with key industry stakeholders and initiatives 4) Ensure effective communication between industry and ELIXIR 5) Support the bioinformatics training needs of industry To deliver Objective 2 - Enable Open innovation by Europe’s SMEs - ELIXIR operates the Innovation and SME Forum. This Deliverable is an assessment of how effective this programme has been in supporting innovation in SMEs. In the context of EXCELERATE Work Package 13, the activities have been carried out in Subtask 13.2.2: Expand the reach and impact of ELIXIR’s Innovation and SME programme. Over the course of the ELIXIR-EXCELERATE grant, we organised seven Innovation and SME events with themes ranging from data driven innovation in rare diseases to food and nutrition. In total, we attracted ~600 participants to these events. The impact assessment was conducted by using qualitative and quantitative methods such as feedback surveys and direct follow up with attendees from ELIXIR’s Industry Officer, Katharina Lauer. The overall assessment is that the Innovation and SME Forum is considered a flagship activity of ELIXIR. Industry attending the events find the forum incredibly useful, as do ELIXIR Nodes. Such has been the impact of the ELIXIR Innovation and SME Forum, we have been able to secure budget from ELIXIR Members to operate future events after ELIXIR-EXCELERATE project has ended, and to expand the programme through running more events in the context of the IMI-funded FAIRPlus1 project.
Estimating the spectral indices of correlated astrophysical foregrounds by a second-order statistical approach
Creators: name: Bonaldi, A.
name: Bedini, L.
name: Salerno, E.
name: Baccigalupi, C.
name: De Zotti, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first tests of a new method, the Correlated Component Analysis (CCA) based on second-order statistics, to estimate the mixing matrix, a key ingredient to separate astrophysical foregrounds superimposed to the Cosmic Microwave Background (CMB). In the present application, the mixing matrix is parameterized in terms of the spectral indices of Galactic synchrotron and thermal dust emissions, while the free-free spectral index is prescribed by basic physics, and is thus assumed to be known. We consider simulated observations of the microwave sky with angular resolution and white stationary noise at the nominal levels for the PLANCK satellite, and realistic foreground emissions, with a position dependent synchrotron spectral index. We work with two sets of PLANCK frequency channels: the low frequency set, from 30 to 143 GHz, complemented with the Haslam 408 MHz map, and the high frequency set, from 217 to 545 GHz. The concentration of intense free-free emission on the Galactic plane introduces a steep dependence of the spectral index of the global Galactic emission with Galactic latitude, close to the Galactic equator. This feature makes difficult for the CCA to recover the synchrotron spectral index in this region, given the limited angular resolution of PLANCK, especially at low frequencies. A cut of a narrow strip around the Galactic equator (|b|<3 deg), however, allows us to overcome this problem. We show that, once this strip is removed, the CCA allows an effective foreground subtraction, with residual uncertainties inducing a minor contribution to errors on the recovered CMB power spectrum.
description: 9 pages, 5 figures and 1 table accepted by MNRAS
The effects of training with male and female vocal modeling on melodic singing achievement of grade one children
Creators: name: Mang, Esther Ho Shun
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of this study was to investigate the effects of training with two different types of vocal modeling, the male and female, on the melodic singing achievement of grade one students who possess high or low tonal aptitude. Eighty-three children from two schools participated as subjects. After the Tonal subtest of the Primary Measures of Music Audiation was administered to all children, two criterion songs, one each in major and minor tonality, were taught by rote for five weeks. Forty-three children received music instruction with a female vocal model and 40 children received music instruction with a male vocal model. Each child's singing performance was recorded individually and evaluated by three independent judges using a five-point rating scale. To strengthen the reliability of the singing scores, acoustic analysis was performed on 41 selected subjects using an audio processing computer software. Interjudge correlation coefficients ranged from .89 to.94, and reliabilities between human rating and the acoustic analysis were .90 and .80 for the major and minor song respectively. A f -test on the PMMA Tonal scores indicates that the two groups of children were comparable at the outset of the study. Analysis of the singing scores yields the following findings: 1. A significant difference was found in the major song scores between the two types of vocal modeling. 2. An interaction effect of vocal model by tonal aptitude was found in the minor song scores. 3 . Children with high tonal aptitude and trained by the female vocal model performed the best in both songs. 4. A positive relationship between tonal aptitude levels and singing scores existed consistently in children trained by the female vocal model. 5. Tonal aptitude levels seemed to have little effect on the singing scores for children trained by the male vocal model. 6. All children scored higher in the minor song than the major song regardless of the vocal model used in training.
Detection of current-induced spins by ferromagnetic contacts
Creators: name: Adagideli, Inanc
name: Bauer, Gerrit E. W.
name: Halperin, Bertrand I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Detection of current-induced spin accumulation via ferromagnetic contacts is discussed. Onsager's relations forbid that in a two-probe configuration spins excited by currents in time-reversal symmetric systems can be detected by switching the magnetization of a ferromangetic detector contact. Nevertheless, current-induced spins can be transferred as a torque to a contact magnetization and affect the charge currents in many-terminal configurations. We demonstrate the general concepts by solving the microscopic transport equations for the diffuse Rashba system with magnetic contacts.
description: Accpeted for publication in Physical Review Letters, 5 pages, 3 color figures, RevTeX
Irreducibility of integer-valued polynomials I
Creators: name: Prasad, Devendra
Publisher: name: arXiv
Year: 2020
Subjects: subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics

description: Let $S \subset R$ be an arbitrary subset of a unique factorization domain $R$ and $\K$ be the field of fractions of $R$. The ring of integer-valued polynomials over $S$ is the set $\mathrm{Int}(S,R)= \{ f \in \mathbb{K}[x]: f(a) \in R\ \forall\ a \in S \}.$ This article is an effort to study the irreducibility of integer-valued polynomials over arbitrary subsets of a unique factorization domain. We give a method to construct special kinds of sequences, which we call $d$-sequences. We then use these sequences to obtain a criteria for the irreducibility of the polynomials in $\mathrm{Int}(S,R).$ In some special cases, we explicitly construct these sequences and use these sequences to check the irreducibility of some polynomials in $\mathrm{Int}(S,R).$ At the end, we suggest a generalization of our results to an arbitrary subset of a Dedekind domain.
description: Accepted for publication in Communications in Algebra
Double radiative pion capture on hydrogen and deuterium and the nucleon's pion cloud
Creators: name: Tripathi, S.
name: Armstrong, D. S.
name: Christy, M. E.
name: Clark, J. H. D.
name: Gorringe, T. P.
name: Hasinoff, M. D.
name: Kovash, M. A.
name: Wright, D. H.
name: Zolnierczuk, P. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We report measurements of double radiative capture in pionic hydrogen and pionic deuterium. The measurements were performed with the RMC spectrometer at the TRIUMF cyclotron by recording photon pairs from pion stops in liquid hydrogen and deuterium targets. We obtained absolute branching ratios of $(3.02 \pm 0.27 (stat.) \pm 0.31 (syst.)) \times 10^{-5}$ for hydrogen and $(1.42 \pm ^{0.09}_{0.12} (stat.) \pm 0.11 (syst.)) \times 10^{-5}$ for deuterium, and relative branching ratios of double radiative capture to single radiative capture of $(7.68 \pm 0.69(stat.) \pm 0.79(syst.)) \times 10^{-5}$ for hydrogen and $(5.44 \pm^{0.34}_{0.46}(stat.) \pm 0.42(syst.)) \times 10^{-5}$ for deuterium. For hydrogen, the measured branching ratio and photon energy-angle distributions are in fair agreement with a reaction mechanism involving the annihilation of the incident $π^-$ on the $π^+$ cloud of the target proton. For deuterium, the measured branching ratio and energy-angle distributions are qualitatively consistent with simple arguments for the expected role of the spectator neutron. A comparison between our hydrogen and deuterium data and earlier beryllium and carbon data reveals substantial changes in the relative branching ratios and the energy-angle distributions and is in agreement with the expected evolution of the reaction dynamics from an annihilation process in S-state capture to a bremsstrahlung process in P-state capture. Lastly, we comment on the relevance of the double radiative process to the investigation of the charged pion polarizability and the in-medium pion field.
description: 44 pages, 7 tables, 13 figures, submitted to Phys. Rev. C
A three-order-parameter bistable magnetoelectric multiferroic metal
Creators: name: Urru, Andrea
name: Ricci, Francesco
name: Filippetti, Alessio
name: Iniguez, Jorge
name: Fiorentini, Vincenzo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Using first-principles calculations we predict that the layered-perovskite metal Bi$_5$Mn$_5$O$_{17}$ is a ferromagnet, ferroelectric, and ferrotoroid which may realize the long sought-after goal of a room-temperature ferromagnetic single-phase multiferroic with large, strongly coupled, primary-order polarization and magnetization. Bi$_5$Mn$_5$O$_{17}$ has two nearly energy-degenerate ground states with mutually orthogonal vector order parameters (polarization, magnetization, ferrotoroidicity), which can be rotated globally by switching between ground states. Giant cross-coupling magnetoelectric and magnetotoroidic effects, as well as optical non-reciprocity, are thus expected. Importantly, Bi$_5$Mn$_5$O$_{17}$ should be thermodynamically stable in O-rich growth conditions, and hence experimentally accessible.
description: 7 pages, 7 figures
Dynamical Gibbs-non-Gibbs transitions in the Curie-Weiss Potts model in the regime beta<3
Creators: name: Kuelske, Christof
name: Meissner, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 82B20, 82B26, 82C20

description: We consider the Curie-Weiss Potts model in zero external field under independent symmetric spin-flip dynamics. We investigate dynamical Gibbs-non-Gibbs transitions for a range of initial inverse temperatures beta<3, which covers the phase transition point beta=4 log 2 [8]. We show that finitely many types of trajectories of bad empirical measures appear, depending on the parameter beta, with a possibility of re-entrance into the Gibbsian regime, of which we provide a full description.
description: 44 pages, 12 figures, there are two additional files: an overview graphic and source code for symbolic computation we used
Methods for measuring the electron EDM using ultracold YbF molecules
Creators: name: Fitch, N. J.
name: Lim, J.
name: Hinds, E. A.
name: Sauer, B. E.
name: Tarbutt, M. R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Measurements of the electron's electric dipole moment (eEDM) are demanding tests of physics beyond the Standard Model. We describe how ultracold YbF molecules could be used to improve the precision of eEDM measurements by two to three orders of magnitude. Using numerical simulations, we show how the combination of magnetic focussing, two-dimensional transverse laser cooling, and frequency-chirped laser slowing, can produce an intense, slow, highly-collimated molecular beam. We show how to make a magneto-optical trap of YbF molecules and how the molecules could be loaded into an optical lattice. eEDM measurements could be made using the slow molecular beam or using molecules trapped in the lattice. We estimate the statistical sensitivity that could be reached in each case and consider how sources of noise can be reduced so that the shot-noise limit of sensitivity can be reached. We also consider systematic effects due to magnetic fields and vector light shifts and how they could be controlled.
Sexual selection in the spring peeper, Pseudacris crucifer, and multimodal signaling in the tungara frog, Physalaemus pustulosus
Creators: name: Wilhite, Kyle
Publisher: name: Maryland Shared Open Access Repository
Year: 2014
Subjects: spring peeper
multimodal signaling
sexual selection

description: Communication facilitates almost every social interaction between organisms and this communication is especially important for mate acquisition. Anuran amphibians are an excellent model system to study mate choice behaviors and sexual selection. In this work I recorded male calls ofthe spring peeper, Pseudacris crucifer, between two populations (Maryland and Louisiana) and analyzed call parameters such as frequency, duration, and rise and fall time. I found differences in the frequency and the frequency sweep of the calls. I conducted choice experiments to test female mating preferences in the Louisiana population and found a preference for longer calls over short calls. Females did not express a preference for frequency, frequency sweep, or local (LA) versus foreign (MD) calls. I also conducted multimodal signaling experiments on the tungara frog, Physalaemus pustulosus. I used natural calls and a robotic tUngara frog to determine how females assess different signal modalities (auditory versus visual). I tested previously established attractive calls against unattractive calls, paired with the robo-frog and inflating vocal sac, to see if the visual stimulus would modulate the attractiveness of the call. The presence of the vocal sac did not make the unattractive call more attractive. The vocal sac may have important implications for localization in a more complex environment but here, it did not act as a mate attracting signal. This study provides the ground work necessary for multimodal signaling in spring peepers and for complex sensory environment choice tests in the tungara frog.
AdS/QCD Phenomenological Models from a Back-Reacted Geometry
Creators: name: Shock, Jonathan P.
name: Wu, Feng
name: Wu, Yue-Liang
name: Xie, Zhi-Feng
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We construct a fully back-reacted holographic dual of a four-dimensional field theory which exhibits chiral symmetry breaking. Two possible models are considered by studying the effects of a five-dimensional field, dual to the $q\bar{q}$ operator. One model has smooth geometry at all radii and the other dynamically generates a cutoff at finite radius. Both of these models satisfy Einstein's field equations. The second model has only three free parameters, as in QCD, and we show that this gives phenomenologically consistent results. We also discuss the possibility that in order to obtain linear confinement from a back-reacted model it may be necessary to consider the condensate of a dimension two operator.
description: 13 pages, 4 figures, Replaced with minor corrections
Informes nuevas tendencias: Flipped Classroom, Flip Teaching, Aula Invertida, Aula Inversa.
Creators: name: Fidalgo-Blanco, Ángel
name: Sein-Echaluce, María Luisa
name: García-Peñalvo, F.J
Publisher: name: Zenodo
Year: 2019
Subjects: Flip Teaching, Flipped Classroom, Aula Inversa, Aula Invertida, Tendencia Innovación Educativa

description: Breve informe con las claves sobre la tendencia Flipped Classroom o Aula Invertida: ¿Para qué sirve? ¿Cómo se hace? ¿Cuándo surge este método? ¿Cúal es el problema principal de esté método? ¿Hay algún “truco” para que el alumnado lleve la lección aprendida? Modelos para aplicar el método de Aula Invertida ¿Hay indicadores de calidad contrastados científicamente? Referencias bibliográficas utilizadas