cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Διαχείριση Κρίσεων και Διαδικτυακές Καμπάνιες – Η περίπτωση της καμπάνιας του Κωστή Πολύζου
Creators: name: Χριστοφορίδου, Ελευθερία Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Ακτιβιστικές ομάδες
Διαδικτυακές καμπάνιες
Διαχείριση κρίσεων
Activist groups
Online Campaigns
Crisis Management

description: Σκοπός της εργασίας είναι η μελέτη της χρήσης των social media campaigns κατά τη διάρκεια κρίσεων και πώς αυτές χρησιμοποιούνται από τα μέλη μιας κοινότητας / ομάδας ως εργαλείο για την αντιμετώπιση μιας κρίσης. Η κρίση αυτή αντιμετωπίζεται μέσα από τα Social Media και συγκεκριμένα μέσα από κοινωνικές ομάδες στο Facebook. Στόχος αυτών των ομάδων είναι η αντιμετώπιση και επίλυση κοινωνικών ζητημάτων / κρίσεων. Ένας από τους στόχους αυτής της εργασίας είναι να δοθεί ένα παράδειγμα ότι πολίτες που διεκδικούν κάτι μπορούν μέσα από διαδικτυακές καμπάνιες να φτάσουν στο αποτέλεσμα που επιθυμούν. Case study της εργασίας αυτής είναι η ομάδα του Facebook "Στη μνήμη του Κωστή Πολύζου", η οποία μέσω στοχευμένων ενεργειών ασκούσε πίεση να μην κλείσει η υπόθεση του Κωστή Πολύζου. Η ομάδα «Στη Μνήμη του Κωστή Πολύζου», έχοντας ορατά αποτελέσματα, θα συγκριθεί με παρόμοιες ακτιβιστικές ομάδες κοινωνικού ενδιαφέροντος στόχος των οποίων είναι, επίσης, η αντιμετώπιση κάποιας κρίσης. Η σύγκριση θα γίνει με συνεντεύξεις, είτε με τους δημιουργούς, είτε με τους διαχειριστές των ομάδων, ώστε να απαντηθούν ερωτήματα όπως ποιες είναι οι δράσεις τους και ποιος ο σκοπός ύπαρξης των ομάδων αυτών στο διαδίκτυο.
description: The aim of this thesis is to demonstrate the contribution of social media campaigns during a crisis and how they can work as a tool for dealing with it by members of a group or a community. It should be mentioned that a crisis of that type is treated by Social Media and particularly by social groups on Facebook. The aim of these groups is to contribute to dealing with social issues. One of the goals of this thesis is to give an example of how people’s claims can reach a desireable result or even a tangible resolution through online campaigns. The case study worked on in this thesis is the Facebook group "In memory of Kostis Polyzos", which through targeted actions exercised influence and succeeded in not closing the case. The group "In Memory of Kostis Polyzos", having achieved noticeable results, will be compared to similar activist social interest groups that also have dealt with some crisis. Additionally, interviews with the creators and the group managers are presented in order questions such as what their actions are and what the purpose of these groups’ existence online is to be answered.
On the communication between cells of a cellular automaton on the penta- and heptagrids of the hyperbolic plane
Creators: name: Margenstern, Maurice
Publisher: name: arXiv
Year: 2006
Subjects: subject: Computational Geometry (cs.CG)
subject: Computational Complexity (cs.CC)
subject: FOS: Computer and information sciences
subject: F.1.1; F.1.3

description: This contribution belongs to a combinatorial approach to hyperbolic geometry and it is aimed at possible applications to computer simulations. It is based on the splitting method which was introduced by the author and which is reminded in the second section of the paper. Then we sketchily remind the application to the classical case of the pentagrid, i.e. the tiling of the hyperbolic plane which is generated by reflections of the regular rectangular pentagon in its sides and, recursively, of its images in their sides. From this application, we derived a system of coordinates to locate the tiles, allowing an implementation of cellular automata. At the software level, cells exchange messages thanks to a new representation which improves the speed of contacts between cells. In the new setting, communications are exchanged along actual geodesics and the contribution of the cellular automaton is also linear in the coordinates of the cells.
description: 19 pages, 6 figures
Generating Functions of Orbifold Chern Classes I : Symmetric Products
Creators: name: Ohmoto, Toru
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Geometry (math.AG)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: For a possibly singular complex variety $X$, generating functions of total "orbifold Chern homology classes" of symmetric products $S^nX$ are given. Those are very natural "Chern class versions" (in the sense of Schwartz-MacPherson) of known generating function formulae of (generalized) orbifold Euler characteristics of $S^nX$. In fact more generally we introduce the "class version" of the Dey-Wohlfahrt formula in classical group theory.
description: (v2) a tentatively revised version
Recent developments in applied pseudoanalytic function theory
Creators: name: Kravchenko, Vladislav V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Complex Variables (math.CV)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 30G20, 30G35

description: We present recently obtained results in the theory of pseudoanalytic functions and its applications to elliptic second-order equations. The operator (divpgrad+q) with p and q being real valued functions is factorized with the aid of Vekua type operators of a special form and as a consequence the elliptic equation (divpgrad+q)u=0, (1) reduces to a homogeneous Vekua equation describing generalized analytic (or pseudoanalytic) functions. As a tool for solving the Vekua equation we use the theory of Taylor and Laurent series in formal powers for pseudoanalytic functions developed by L. Bers. The series possess many important properties of the usual analytic power series. Their applications until recently were limited mainly because of the impossibility of their explicit construction in a general situation. We obtain an algorithm which in a really broad range of practical applications allows us to construct the formal powers and hence the pseudoanalytic Taylor series in explicit form precisely for the Vekua equation related to equation (1). In other words, in a bounded domain this gives us a complete (in C-norm) system of exact solutions of (1).
Measurement of the Tip-Induced Potential in Scanning Gate Experiments
Creators: name: Gildemeister, A. E.
name: Ihn, T.
name: Sigrist, M.
name: Ensslin, K.
name: Driscoll, D. C.
name: Gossard, A. C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a detailed experimental study on the electrostatic interaction between a quantum dot and the metallic tip of a scanning force microscope. Our method allowed us to quantitatively map the tip-induced potential and to determine the spatial dependence of the tip's lever arm with high resolution. We find that two parts of the tip-induced potential can be distinguished, one that depends on the voltage applied to the tip and one that is independent of this voltage. The first part is due to the metallic tip while we interpret the second part as the effect of a charged dielectric particle on the tip. In the measurements of the lever arm we find fine structure that depends on which quantum state we study. The results are discussed in view of scanning gate experiments where the tip is used as a movable gate to study nanostructures.
description: 7 pages, 5 figures, minor changes to fit published version
Universal control of quantum processes using sector-preserving channels
Creators: name: Vanrietvelde, Augustin
name: Chiribella, Giulio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: No quantum circuit can turn a completely unknown unitary gate into its coherently controlled version. Yet, coherent control of unknown gates has been realised in experiments, making use of a different type of initial resources. Here, we formalise the task achieved by these experiments, extending it to the control of arbitrary noisy channels, and to more general types of control involving higher dimensional control systems. For the standard notion of coherent control, we identify the information-theoretic resource for controlling an arbitrary quantum channel on a $d$-dimensional system: specifically, the resource is an extended quantum channel acting as the original channel on a $d$-dimensional sector of a $(d+1)$-dimensional system. Using this resource, arbitrary controlled channels can be built with a universal circuit architecture. We then extend the standard notion of control to more general notions, including control of multiple channels with possibly different input and output systems. Finally, we develop a theoretical framework, called supermaps on routed channels, which provides a compact representation of coherent control as an operation performed on the extended channels, and highlights the way the operation acts on different sectors.
description: 33 pages, 7 figures
Nonalternating knots and Jones polynomials
Creators: name: Nicholson, Neil R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M27 (Primary), 57M25 (Secondary)

description: Although most knots are nonalternating, modern research in knot theory seems to focus on alternating knots. We consider here nonalternating knots and their properties. Specifically, we show certain classes of knots have nontrivial Jones polynomials.
description: 23 pages, 17 figures V2: Corrected a few definitions, fixed references, and changed style
Geometric Phase for Neutral Particle in the Presence of a Topological Defect
Creators: name: Bakke, K.
name: Nascimento, J. R.
name: Furtado, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we study the quantum dynamics of a neutral particle in the presence of a topological defect. We investigate the appearance of a geometric phase in the relativistic quantum dynamics of neutral particle which possesses permanent magnetic and electric dipole moments in the presence of an electromagnetic fields in this curved background. The nonrelativistic quantum dynamics are investigated using the Foldy-Wouthuysen expansion. The gravitational Aharonov-Casher and He-Mckellar-Wilkens effects are investigated for a series of electric and magnetic fields configurations.
description: 13 pages, no figures
Microfluidic viscosity gradient generator
Creators: name: Pasupuleti, Sasi
name: Humphries, Stuart
Publisher: name: Zenodo
Year: 2019
Subjects: Microfluidic device

description: COMSOL model file describing a microfluidic device to generate stable viscosity gradients by mixing fluids of differing viscosities.
description: Funded by the Gordon and Betty Moore Foundation, MMI grant #6852
A World without Pythons would be so Simple
Creators: name: Engelhardt, Netta
name: Penington, Geoff
name: Shahbazi-Moghaddam, Arvin
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that bulk operators lying between the outermost extremal surface and the asymptotic boundary admit a simple boundary reconstruction in the classical limit. This is the converse of the Python's lunch conjecture, which proposes that operators with support between the minimal and outermost (quantum) extremal surfaces - e.g. the interior Hawking partners - are highly complex. Our procedure for reconstructing this "simple wedge" is based on the HKLL construction, but uses causal bulk propagation of perturbed boundary conditions on Lorentzian timefolds to expand the causal wedge as far as the outermost extremal surface. As a corollary, we establish the Simple Entropy proposal for the holographic dual of the area of a marginally trapped surface as well as a similar holographic dual for the outermost extremal surface. We find that the simple wedge is dual to a particular coarse-grained CFT state, obtained via averaging over all possible Python's lunches. An efficient quantum circuit converts this coarse-grained state into a "simple state" that is indistinguishable in finite time from a state with a local modular Hamiltonian. Under certain circumstances, the simple state modular Hamiltonian generates an exactly local flow; we interpret this result as a holographic dual of black hole uniqueness.
description: 39 pages, 6 figures
Strain relaxation in GaN grown on vicinal 4H-SiC(0001) substrates
Creators: name: Pernot, Julien
name: Bustarret, Etienne
name: Rudzinski, Mariusz
name: Hageman, Paul R.
name: Larsen, Poul K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The strain of GaN layers grown by Metal Organic Chemical Vapor Deposition (MOCVD) on three vicinal 4H-SiC substrates (0, 3.4 and 8 offcut from [0001] towards [11-20] axis) is investigated by X-ray Diffraction (XRD), Raman Scattering and Cathodoluminescence (CL). The strain relaxation mechanisms are analyzed for each miscut angle. At a microscopic scale, the GaN layer grown on on-axis substrate has a slight and homogeneous tensile in-plane stress due to a uniform distribution of threading dislocations over the whole surface. The GaN layers grown on miscut substrates presented cracks, separating areas which have a stronger tensile in-plane stress but a more elastic strain. The plastic relaxation mechanisms involved in these layers are attributed to the step flow growth on misoriented surfaces (dislocations and stacking faults) and to the macroscopical plastic release of additional thermoelastic stress upon cooling down (cracks).
Length scale dependence of dynamical heterogeneity in a colloidal fractal gel
Creators: name: Duri, Agnes
name: Cipelletti, Luca
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We use time-resolved dynamic light scattering to investigate the slow dynamics of a colloidal gel. The final decay of the average intensity autocorrelation function is well described by $g\_2(q,τ)-1 \sim \exp[-(τ/τ\_\mathrm{f})^p]$, with $τ\_\mathrm{f} \sim q^{-1}$ and $p$ decreasing from 1.5 to 1 with increasing $q$. We show that the dynamics is not due to a continuous ballistic process, as proposed in previous works, but rather to rare, intermittent rearrangements. We quantify the dynamical fluctuations resulting from intermittency by means of the variance $χ(τ,q)$ of the instantaneous autocorrelation function, the analogous of the dynamical susceptibility $χ\_4$ studied in glass formers. The amplitude of $χ$ is found to grow linearly with $q$. We propose a simple --yet general-- model of intermittent dynamics that accounts for the $q$ dependence of both the average correlation functions and $χ$.
description: Revised and improved, to appear in Europhys. Lett
Generation and Observation of Coherent, Long--Lived Structures in a Laser--Plasma Channel
Creators: name: Liseykina, T. V.
name: Ceccherini, F.
name: Cornolti, F.
name: Echkina, E. Yu.
name: Macchi, A.
name: Pegoraro, F.
name: Borghesi, M.
name: Kar, S.
name: Romagnani, L.
name: Bulanov, S. V.
name: Willi, O.
name: Galimberti, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: In recent experiments of laser pulse interaction at relativistic intensities with a low density plasma, the proton radiography technique showed evidence of long--lived field structures generated after the self-channeling of the laser pulse. We present 2D particle-in-cell simulations of this interaction regime, where the dynamics of similar structures has been resolved with high temporal and spatial resolution. An axially symmetrical field pattern, resembling both soliton-like and vortex structures, has been observed. A study of the physics of such structures and a comparison with experimental data is in progress.
description: To appear in the Proceedings of the International Workshop "Collective phenomena in macroscopic systems", Villa Olmo, Como, Italy, December 4-6, 2006; 9 pages, 8 figures submitted in GIF format
Magnetized discs and photon rings around Yukawa-like black holes
Creators: name: Cruz-Osorio, Alejandro
name: Gimeno-Soler, Sergio
name: Font, José A.
name: De Laurentis, Mariafelicia
name: Mendoza, Sergio
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present stationary solutions of geometrically thick discs (or tori) endowed with a self-consistent toroidal magnetic field distribution surrounding a non-rotating black hole in an analytical, static, spherically-symmetric $f(R)$-gravity background. These $f(R)$-gravity models introduce a Yukawa-like modification to the Newtonian potential, encoded in a single parameter $δ$ which controls the strength of the modified potential and whose specific values affect the disc configurations when compared to the general relativistic case. Our models span different magnetic field strengths, from purely hydrodynamical discs to highly magnetized tori. The characteristics of the solutions are identified by analyzing the central density, mass, geometrical size, angular size, and the black hole metric deviations from the Schwarzschild space-time. In the general relativistic limit ($δ=0$) our models reproduce previous results for a Schwarzschild black hole. For small values of the $δ$ parameter, corresponding to $\sim 10\%$ deviations from general relativity, we find variations of $\sim 2 \%$ in the event horizon size, a $\sim 5\%$ shift in the location of the inner edge and center of the disc, while the outer edge increases by $\sim 10\%$. Our analysis for $|δ|>0.1$, however, reveals notable changes in the black hole space-time solution which have a major impact in the morphological and thermodynamical properties of the discs. The comparison with general relativity is further investigated by computing the size of the photon ring produced by a source located at infinity. This allows us to place constraints on the parameters of the $f(R)$-gravity model based on the Event Horizon Telescope observations of the size of the light ring in M87 and SgrA$^*$.
description: 14 pages, 7 figures, 2 tables. Version accepted for publication in PRD
Tomonaga-Luttinger liquid correlations and Fabry-Perot interference in conductance and finite-frequency shot noise in a single-walled carbon nanotube
Creators: name: Recher, Patrik
name: Kim, Na Young
name: Yamamoto, Yoshihisa
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a detailed theoretical investigation of transport through a single-walled carbon nanotube (SWNT) in good contact to metal leads where weak backscattering at the interfaces between SWNT and source and drain reservoirs gives rise to electronic Fabry-Perot (FP) oscillations in conductance and shot noise. We include the electron-electron interaction and the finite length of the SWNT within the inhomogeneous Tomonaga-Luttinger liquid (TLL) model and treat the non-equilibrium effects due to an applied bias voltage within the Keldysh approach. In low-frequency transport properties, the TLL effect is apparent mainly via power-law characteristics as a function of bias voltage or temperature at energy scales above the finite level spacing of the SWNT. The FP-frequency is dominated by the non-interacting spin mode velocity due to two degenerate subbands rather than the interacting charge velocity. At higher frequencies, the excess noise is shown to be capable of resolving the splintering of the transported electrons arising from the mismatch of the TLL-parameter at the interface between metal reservoirs and SWNT. This dynamics leads to a periodic shot noise suppression as a function of frequency and with a period that is determined solely by the charge velocity. At large bias voltages, these oscillations are dominant over the ordinary FP-oscillations caused by two weak backscatterers. This makes shot noise an invaluable tool to distinguish the two mode velocities in the SWNT.
description: 20 pages, 9 figures
Additional file 3 of Circadian clock gene Clock-Bmal1 regulates cellular senescence in Chronic obstructive pulmonary disease
Creators: name: Li, Lingling
name: Zhang, Min
name: Zhao, Chunyang
name: Cheng, Yusheng
name: Liu, Chuanmei
name: Shi, Minhua
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Science Policy
subject: Hematology
subject: Plant Biology

description: Additional file 3.
IoT Virtualization with ML-based Information Extraction
Creators: name: Bauer, Martin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: For IoT to reach its full potential, the sharing and reuse of information in different applications and across verticals is of paramount importance. However, there are a plethora of IoT platforms using different representations, protocols and interaction patterns. To address this issue, the Fed4IoT project has developed an IoT virtualization platform that, on the one hand, integrates information from many different source platforms and, on the other hand, makes the information required by the respective users available in the target platform of choice. To enable this, information is translated into a common, neutral exchange format. The format of choice is NGSI-LD, which is being standardized by the ETSI Industry Specification Group on Context Information Management (ETSI ISG CIM). Thing Visors are the components that translate the source information to NGSI-LD, which is then delivered to the target platform and translated into the target format. ThingVisors can be implemented by hand, but this requires significant human effort, especially considering the heterogeneity of low level information produced by a multitude of sensors. Thus, supporting the human developer and, ideally, fully automating the process of extracting and enriching data and translating it to NGSI-LD is a crucial step. Machine learning is a promising approach for this, but it typically requires large amounts of hand-labelled data for training, an effort that makes it unrealistic in many IoT scenarios. A programmatic labelling approach called knowledge infusion that encodes expert knowledge is used for matching a schema or ontology extracted from the data with a target schema or ontology, providing the basis for annotating the data and facilitating the translation to NGSI-LD.
Additional file 7 of Circadian clock gene Clock-Bmal1 regulates cellular senescence in Chronic obstructive pulmonary disease
Creators: name: Li, Lingling
name: Zhang, Min
name: Zhao, Chunyang
name: Cheng, Yusheng
name: Liu, Chuanmei
name: Shi, Minhua
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Science Policy
subject: Hematology
subject: Plant Biology

description: Additional file 7.
Αναδιπλασιασμός και υπερδιπλασιασμός στην Ελληνική
Creators: name: Χριστοδουλίδου, Πολυχρονία Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Φωνολογική Λέξη
Μορφολογική Λέξη
Επαναδρομή
Phonological Word
Morphological Word
Recursion

description: Στην παρούσα εργασία εξετάζεται ένας τύπος μορφολογικού αναδιπλασιασμού και υπερδιπλασιασμού της Ελληνικής, όπου επανεμφανίζεται, στην πρώτη περίπτωση, το πιο αριστερά κείμενο μόρφημα μίας λέξης μία φορά, ενώ, στη δεύτερη, περισσότερες από μία. Εκτός από τον αμιγώς μορφολογικό (υπερ-)αναδιπλασιασμό, μελετάται και ένας τύπος μορφοφωνολογικού (υπερ-)αναδιπλασιασμού, όπου δεν επανεμφανίζεται απλά κάποιο μόρφημα, αλλά το πιο αριστερά κείμενο τμήμα μιας μορφολογικής λέξης, που φωνολογικά ταυτίζεται με μόρφημα, ενώ, μορφολογικά, δεν είναι. Και για τα δύο αυτά φαινόμενα, εξετάζονται οι διαδικασίες σχηματισμού των υπό εξέταση δομών, η προσωδιακή τους δομή, η σημασία τους και κάποια επιπλέον φωνολογικά και μορφολογικά χαρακτηριστικά τους, όπως είναι η ύπαρξη έμφασης και τα μορφοφωνολογικά χαρακτηριστικά της βάσης. Παράλληλα με αυτά, γίνονται προβλέψεις και για το επιτρεπτό για την ελληνική γλώσσα μέγιστο μέγεθος της μορφολογικής και της φωνολογικής λέξης, όπως, επίσης, και για τον αριθμό των επαναδρομών που είναι δυνατό να επιτραπούν στο επίπεδο της φωνολογικής λέξης.
description: In the present assignment we are examining a certain type of morphological reduplication and hyper-reduplication in Greek. In the former case, the left end morpheme of a word reappears once while, in the latter, more than once. Apart from the purely morphological (hyper-)reduplication, a certain type of morphophonological (hyper-)reduplication is also being studied, which involves the reappearance not simply of a morpheme but of the left end part of a morphological word that is identified with a morpheme phonologically – but not morphologically. For both of these phenomena, we are looking into the formation processes of the structures under study, their prosodic structure, their meaning and certain additional phonological and morphological features, such as the existence of emphasis and the morphophonological features of the base. Parallel to these, we are attempting predictions as to the maximally allowed size of the morphological and the phonological word as well as the number of recursions that are possibly allowed at the level of the phonological word in the Greek language.
Classification of Exceptional Nodal Topologies Protected by $\mathcal{PT}$ Symmetry
Creators: name: Stålhammar, Marcus
name: Bergholtz, Emil J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Exceptional degeneracies, at which both eigenvalues and eigenvectors coalesce, and parity-time ($\mathcal{PT}$) symmetry, reflecting balanced gain and loss in photonic systems, are paramount concepts in non-Hermitian systems. We here complete the topological classification of exceptional nodal degeneracies protected by $\mathcal{PT}$ symmetry in up to three dimensions and provide simple example models whose exceptional nodal topologies include previously overlooked possibilities such as second-order knotted surfaces of arbitrary genus, third-order knots and fourth-order points.
description: Including supplementary material
Additional file 1 of Genomic insight into diet adaptation in the biological control agent Cryptolaemus montrouzieri
Creators: name: Hao-Sen Li
name: Huang, Yu-Hao
name: Chen, Mei-Lan
name: Ren, Zhan
name: Bo-Yuan Qiu
name: Clercq, Patrick De
name: Heckel, Gerald
name: Pang, Hong
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Zoology

description: Additional file 1: Supplementary Figure S1. Results of CAFE analysis inferring the size change of gene families in the genome of nine tested Coleoptera species. This summary tree shows the number of expanded (red) and contracted (green) families. The species’ ultrametric tree was adapted from Mckenna et al. [6]. Abbreviations of the tested species are defined in Table 1. Table S3. Comparison of life history traits of Cryptolaemus montrouzieri subjected to different diet treatments and starvation. Means (± SE) within a column followed by the same letter are not significantly different (P > 0.05). Figure S2. Heatmap of adjusted P values (Q) in Gene Ontology (GO) enrichment analysis for the transcriptome comparisons of alternative diets versus the natural prey of C. montrouzieri larvae. C: Cellular component; F: Molecular function; P: Biological process. The number of background genes of each GO term is shown in brackets. Enrichment with Q
Domain wall mobility, stability and Walker breakdown in magnetic nanowires
Creators: name: Mougin, A.
name: Cormier, M.
name: Adam, J. P.
name: Metaxas, P. J.
name: Ferre, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present an analytical calculation of the velocity of a single 180 degree domain wall in a magnetic structure with reduced thickness and/or lateral dimension under the combined action of an external applied magnetic field and an electrical current. As for the case of field-induced domain wall propagation in thick films, two motion regimes with different mobilities are obtained, below and far above the so-called Walker field. Additionally, for the case of current induced motion, a Walker-like current density threshold can be defined. When the dimensions of the system become comparable to the domain wall width, the threshold field and current density, stating the wall's internal structure stability, are reduced by the same geometrical demagnetising factor which accounts for the confinement. This points out the fact that the velocity dependence over an extended field/current range and the knowledge of the Walker breakdown are mandatory to draw conclusions about the phenomenological Gilbert damping parameter tuning the magnetisation dynamics.
description: submitted to nature materials
Η έννοια του περιβάλλοντος μέσα από τα σχολικά εγχειρίδια των Θρησκευτικών του Δημοτικού σχολείου
Creators: name: Εφραιμίδης, Παύλος Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Περιβάλλον
Σχολικά εγχειρίδια των Θρησκευτικών
Ανάλυση περιεχομένου
Environment
School course-books of Religious Education
Content analysis

description: Στην παρούσα εργασία διερευνάται η προσέγγιση της έννοιας του περιβάλλοντος στα σχολικά εγχειρίδια της περιόδου 2006-2017 του μαθήματος των Θρησκευτικών (μτΘ) των Γ΄, Δ΄, Ε΄ και Στ΄ τάξεων του Δημοτικού Σχολείου. Η μέθοδος που αξιοποιήθηκε είναι η ανάλυση περιεχομένου. Από την ανάλυση περιεχομένου των σχολικών εγχειριδίων του μτΘ προέκυψε ότι προβάλλονται αξίες που συνδέονται µε τα περιβαλλοντικά ζητήματα και προβλήματα, έχουν να κάνουν µε το αίσθημα της προσωπικής και συλλογικής ευθύνης και αποτελούν προϋποθέσεις για μια σωστή αντιμετώπιση των περιβαλλοντικών προβλημάτων. Ωστόσο, διαπιστώνεται ότι τα σχολικά εγχειρίδια του μτΘ του Δημοτικού Σχολείου πολύ λίγες φορές αναφέρονται ρητά στη φιλοπεριβαλλοντική συμπεριφορά και την αυταξία των όντων. Στη σχέση ανθρώπου-περιβάλλοντος υπερτερούν η σχέση κυριαρχίας του ανθρώπου στο περιβάλλον και η σχέση σύνδεσης του ανθρώπου με τα πρώτα στοιχεία του αναμορφωμένου κόσμου, που χρησιμεύουν ως φορείς του Αγίου Πνεύματος, αλλά έπεται η σχέση προστασίας του περιβάλλοντος από τον άνθρωπο. Στη σχέση Θεού-Δημιουργού – περιβάλλοντος κυριαρχεί η σχέση αγάπης-μέριμνας και η σχέση επικοινωνίας, ενώ ακολουθεί η σχέση λυτρωτή-σωτήρα και σωζόμενου.
description: This paper investigates the approach to the concept of the environment in the school course-books of 2006-2017 concerning the subject of Religious Education (RE) for the third, fourth, fifth and sixth grades of primary school. The method utilised is content analysis. The results of the content analysis of the RE school course-books demonstrated the emergence of values which are linked to environmental issues and problems, have to do with the sentiment of personal and collective responsibility and constitute a prerequisite for the handling of environmental issues. However, it is ascertained that the RE school course-books of primary school make little explicit reference to environment-friendly behaviour and the self-worth of beings. Within the relationship of man to the environment, there prevails the relation of man's dominance over the environment and the relation of man's connection to the first elements of the reformed world, which serve as carriers of the Holy Spirit, followed by the relation of the protection of the environment by man. In the relationship of God-Creator-environment predominates the relation of love-care and the relation of communication, followed by the relation of redeemer-saviour and saved person.
Search for a heavy Higgs boson decaying into two lighter Higgs bosons in the $ττ$bb final state at 13 TeV
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search for a heavy Higgs boson H decaying into the observed Higgs boson h with a mass of 125 GeV and another Higgs boson h$_\mathrm{S}$ is presented. The h and h$_\mathrm{S}$ bosons are required to decay into a pair of tau leptons and a pair of b quarks, respectively. The search uses a sample of proton-proton collisions collected with the CMS detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 137 fb$^{-1}$. Mass ranges of 240-3000 GeV for $m_\mathrm{H}$ and 60-2800 GeV for $m_\mathrm{h_S}$ are explored in the search. No signal has been observed. Model independent 95% confidence level upper limits on the product of the production cross section and the branching fractions of the signal process are set with a sensitivity ranging from 125 fb (for $m_\mathrm{H}$ $=$ 240 GeV) to 2.7 fb (for $m_\mathrm{H}$ $=$ 1000 GeV). These limits are compared to maximally allowed products of the production cross section and the branching fractions of the signal process in the next-to-minimal supersymmetric extension of the standard model.
description: Replaced with the published version. Added the journal reference and the DOI. All the figures and tables, including additional supplementary figures and tables, can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIG-20-014 (CMS Public Pages)
Προτεινόμενο μοντέλο ηγεσίας σε σχολικές δομές ειδικής αγωγής πρωτοβάθμιας ή δευτεροβάθμιας εκπαίδευσης στηριζόμενο στις απόψεις εκπαιδευτικών
Creators: name: Δαμιανίδου, Λαμπρινή Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Μοντέλα ηγεσίας
Σχολική ηγεσία
Ειδική αγωγή
Forms of leadership
School leadership
Special education

description: Τα διάφορα μοντέλα ηγεσίας καθώς και τα χαρακτηριστικά τους έχουν μελετηθεί εκτεταμένα στην βιβλιογραφία. Επιπλέον, οι νέες προσεγγίσεις της ειδικής αγωγής που αφορούν πολιτικές προς μία ενιαία εκπαίδευση που συμπεριλαμβάνει όλους αποτελούν ένα θέμα που απασχολεί ιδιαίτερα τους ερευνητές διεθνώς. Η συγκεκριμένη έρευνα συνδυάζει τα δύο αυτά θέματα μελετώντας τις απόψεις εκπαιδευτικών που εργάζονται σε δομές ειδικής αγωγής στην Ελλάδα σχετικά με τα χαρακτηριστικά και τις δεξιότητες που πρέπει να διαθέτει ένας ιδανικός διευθυντής σχολικής μονάδας σε δομή ειδικής εκπαίδευσης. Με βάση τα χαρακτηριστικά και τις δεξιότητες που προκύπτουν από την έρευνα προτείνεται ένα μοντέλο ηγεσίας για δομή ειδικής αγωγής και εκπαίδευσης. Το δείγμα που συμμετείχε αποτελείται από 42 εκπαιδευτικούς. Πραγματοποιήθηκε ανάλυση περιεχομένου από την οποία προέκυψαν 282 αναφορές σε χαρακτηριστικά και δεξιότητες. Οι αναφορές αυτές κατανεμήθηκαν σε 5 θεματικές κατηγορίες (στοιχεία κατάρτισης, χαρακτηριστικά προσωπικότητας/κουλτούρας, τεχνικές/αντιληπτικές δεξιότητες, κοινωνικές δεξιότητες και επαγγελματικές δεξιότητες). Τα δημογραφικά στοιχεία του δείγματος δεν φάνηκε να συσχετίζονται με τα ευρήματα. Οι θεματικές κατηγορίες με την μεγαλύτερη συχνότητα ήταν οι κοινωνικές δεξιότητες του διευθυντή (39,7%) και τα χαρακτηριστικά προσωπικότητας/ κουλτούρας (30,1%).
description: Different types of leadership and their characteristics are widely researched and found in bibliography. Moreover, new approaches to special education referring to a school with open access to all seems to be of great interest topic for researchers worldwide. This research tries to approach these two topics by investigating opinions of teachers working in the special education area about the characteristics and the skills an ideal school leader must have. Based on the characteristics and the skills that arise from the research, a leadership model is proposed for special education school leader. The sample of the research consists of 42 teachers. Content analysis (both qualitative and quantitative) showed 282 references about leader’s characteristics and skills. These references were distributed in 5 thematic categories (training characteristics, personality characteristics, technical skills, social skills and professional skills). Demographic data showed no significant correlation with the findings of the research. The thematic categories that were found more frequent in the responds were the social skills of the leader (39,7%) and the personality characteristics(30,1%)
Application of optimal spline subspaces for the removal of spurious outliers in isogeometric discretizations
Creators: name: Manni, Carla
name: Sande, Espen
name: Speleers, Hendrik
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We show that isogeometric Galerkin discretizations of eigenvalue problems related to the Laplace operator subject to any standard type of homogeneous boundary conditions have no outliers in certain optimal spline subspaces. Roughly speaking, these optimal subspaces are obtained from the full spline space defined on certain uniform knot sequences by imposing specific additional boundary conditions. The spline subspaces of interest have been introduced in the literature some years ago when proving their optimality with respect to Kolmogorov $n$-widths in $L^2$-norm for some function classes. The eigenfunctions of the Laplacian -- with any standard type of homogeneous boundary conditions -- belong to such classes. Here we complete the analysis of the approximation properties of these optimal spline subspaces. In particular, we provide explicit $L^2$ and $H^1$ error estimates with full approximation order for Ritz projectors in the univariate and in the multivariate tensor-product setting. Besides their intrinsic interest, these estimates imply that, for a fixed number of degrees of freedom, all the eigenfunctions and the corresponding eigenvalues are well approximated, without loss of accuracy in the whole spectrum when compared to the full spline space. Moreover, there are no spurious values in the approximated spectrum. In other words, the considered subspaces provide accurate outlier-free discretizations in the univariate and in the multivariate tensor-product case. This main contribution is complemented by an explicit construction of B-spline-like bases for the considered spline subspaces. The role of such spaces as accurate discretization spaces for addressing general problems with non-homogeneous boundary behavior is discussed as well.
description: 44 pages, 19 figures. To appear in CMAME
Penrose process for a charged black hole in a uniform magnetic field
Creators: name: Gupta, Kshitij
name: Law, Y. T. Albert
name: Levin, Janna
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Spinning black holes create electromagnetic storms when immersed in ambient magnetic fields, illuminating the otherwise epically dark terrain. In an electromagnetic extension of the Penrose process, tremendous energy can be extracted, boosting the energy of radiating particles far more efficiently than the mechanical Penrose process. We locate the regions from which energy can be mined and demonstrate explicitly that they are no longer restricted to the ergosphere. We also show that there can be toroidal regions that trap negative energy particles in orbit around the black hole. We find that the effective charge coupling between the black hole and the super-radiant particles decreases as energy is extracted, much like the spin of a black hole decreases in the mechanical analogue. While the effective coupling decreases, the actual charge of the black hole increases in magnitude reaching the energetically-favored Wald value, at which point energy extraction is impeded. We demonstrate the array of orbits for products from the electromagnetic Penrose process.
description: 31 pages, 33 figures, published version
A Dual Mesh Method for a Non-Local Thermistor Problem
Creators: name: Hachimi, Abderrahmane El
name: Ammi, Moulay Rchid Sidi
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Analysis of PDEs (math.AP)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We use a dual mesh numerical method to study a non-local parabolic problem arising from the well-known thermistor problem.
description: Published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Additional file 1 of Intestinal organoids in farm animals
Creators: name: Beaumont, Martin
name: Blanc, Fany
name: Cherbuy, Claire
name: Egidy, Giorgia
name: Giuffra, Elisabetta
name: Lacroix-Lamandé, Sonia
name: Wiedemann, Agnès
Publisher: name: figshare
Year: 2021
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Science Policy
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: Inorganic Chemistry
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Additional material and methods.
Shell structure underlying the evolution of quadrupole collectivity in S-38 and S-40 probed by transient-field g-factor measurements on fast radioactive beams
Creators: name: Stuchbery, A. E.
name: Davies, A. D.
name: Mantica, P. F.
name: Davidson, P. M.
name: Wilson, A. N.
name: Becerril, A.
name: Brown, B. A.
name: Campbell, C. M.
name: Cook, J. M.
name: Dinca, D. C.
name: Gade, A.
name: Liddick, S. N.
name: Mertzimekis, T. J.
name: Mueller, W. F.
name: Terry, J. R.
name: Tomlin, B. E.
name: Yoneda, K.
name: Zwahlen, H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The shell structure underlying shape changes in neutron-rich nuclei between N=20 and N=28 has been investigated by a novel application of the transient field technique to measure the first-excited state g factors in S-38 and S-40 produced as fast radioactive beams. Details of the new methodology are presented. In both S-38 and S-40 there is a fine balance between the proton and neutron contributions to the magnetic moments. Shell model calculations which describe the level schemes and quadrupole properties of these nuclei also give a satisfactory explanation of the g factors. In S-38 the g factor is extremely sensitive to the occupation of the neutron p3/2 orbit above the N=28 shell gap as occupation of this orbit strongly affects the proton configuration. The g factor of deformed S-40 does not resemble that of a conventional collective nucleus because spin contributions are more important than usual.
description: 10 pages, 36 figures, accepted for publication in Physical Review C
Polarity-dependent dielectric torque in nematic liquid crystals
Creators: name: Gu, Mingxia
name: Shiyanovskii, Sergij V.
name: Lavrentovich, Oleg D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The dielectric dispersion in the uniaxial nematic liquid crystals affects the switching dynamics of the director, as the dielectric torque is determined by not only the present values of the electric field and director but also by their past values. We demonstrate that this dielectric memory leads to an unusual contribution to the dielectric torque that is linear in the present field and thus polarity-sensitive. This torque can be used to accelerate the switch-off phase of director dynamics.
description: 12 pages, 4 figures
Probing Active to Sterile Neutrino Oscillations in the LENS Detector
Creators: name: Grieb, Christian
name: Link, Jonathan
name: Raghavan, R. S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Sterile neutrino conversion in meter scale baselines can be sensitively probed using monoenergetic, sub-MeV, flavor pure e-neutrinos from an artificial MCi source and the unique technology of LENS designed to oberve the low energy solar neutrino spectrum via tagged CC e-neutrino capture in 115-In. Active-sterile oscillations can be directly observed in the granular LENS detector itself to critically test and extend resuls of short baseline accelerator and reactor experiments.
description: 4pages, 4 figures, text and figure changes
Additional file 1 of Age at menarche, eating disorders, and their relationships with some parameters in female adolescents in Iran
Creators: name: Daeie-Farshbaf, Lida
name: Ebrahimi-Mameghani, Mehrangiz
name: Sarbakhsh, Parvin
name: Roshanravan, Neda
name: Tarighat-Esfanjani, Ali
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1: Table S1. Distribution of socioeconomic characteristics in Eating Disorders (EDs) subgroups (n = 725).
On the structure of two-point Green-functions at next-to-leading order in 1/Nc
Creators: name: Sanz-Cillero, J. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The structure of the two-point QCD Green-functions is studied in this note in the limit of large number of colours. Their general form at next-to-leading order in 1/Nc is derived keeping the infinite resonance summation and without relying on a particular realization of the hadronic action. It is found that the contributions from chiral operators without resonance fields of order p^4 or higher are irrelevant for the computation of the correlators and, hence, they can be dropped at the beginning of the calculation. The possibility of a more general cancelation of these local terms at the level of the generating functional is discussed.
description: 6 pages, 1 figure
Additional file 4 of Circadian clock gene Clock-Bmal1 regulates cellular senescence in Chronic obstructive pulmonary disease
Creators: name: Li, Lingling
name: Zhang, Min
name: Zhao, Chunyang
name: Cheng, Yusheng
name: Liu, Chuanmei
name: Shi, Minhua
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Science Policy
subject: Hematology
subject: Plant Biology

description: Additional file 4.