cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Cost-effectiveness analysis with informative missing data: tools and strategies
Creators: name: Leurent, B
Publisher: name: London School of Hygiene & Tropical Medicine
Year: 2019

description: Cost effectiveness analysis (CEA) of randomised trials are an important source of evidence for informing policy makers on how to best allocate limited resources. Missing data are a common issue in trial-based CEA, and methods such as multiple imputation are now commonly used to account for the missing values, assuming the data are ‘missing at random’ (MAR). This implies that the reasons for the missing data can be explained by the observed data. However, the missingness is often related to unobserved values, that is data are ‘missing not at random’ (MNAR, or ‘informative’). For example, patients whose health status is relatively poor may be less likely to return health questionnaires, even conditional on their observed characteristics. In these settings, methodological guidance recommends assessing whether conclusions are sensitive to departures from the MAR assumption. Sensitivity analysis strategies for handling MNAR is an area of rapid development in medical statistics, but this form of uncertainty has not yet been appropriately addressed in health economics. This PhD thesis aims to develop practical, accessible sensitivity analysis strategies and software tools to handle MNAR data in trial-based CEA. The thesis critically assessed the statistical methods for handling MNAR data in CEA practice, and identified barriers to more widespread use of these methods, via a systematic review and stakeholder focus groups. The research then focused on two strategies to conduct sensitivity analysis under MNAR assumptions: pattern-mixture models, which involve imputing the data assuming MAR, then modifying the imputed values to reflect possible departures from that assumption; and reference-based imputation, where the data are imputed assuming a distribution borrowed from a ‘reference group’. These approaches were illustrated in CEAs of 10TT and CoBalT trials, which evaluated weight loss and depression interventions. Software code and practical guidance are provided to facilitate implementation in practice.
Δυναμικά Συστήματα: Η μελέτη της δυναμικής των πληθυσμών των αλιευμάτων: Η περίπτωση των φαλαινών Minke Whale
Creators: name: Βλάχου, Αλίκη-Χριστίνα Σεβαστιανού
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Δυναμικά Συστήματα
Εξισώσεις Διαφορών
Μη Γραμμικές Εξισώσεις Διαφορών
Υπεραλίευση
Dynamic Systems
Difference Equations
Non-linear Difference Equations
Over-fishing

description: Η παρούσα διπλωματική εργασία, εξετάζει τις βασικές έννοιες των δυναμικών συστημάτων και εστιάζει σε μελέτη πληθυσμών του υδάτινου κόσμου, η επίλυση των οποίων γίνεται με την χρήση των εξισώσεων διαφορών. Συνοπτικά, η εργασία είναι βασισμένη σε βιβλιογραφική ανασκόπηση και χωρίζεται σε δυο βασικά μέρη. Στο πρώτο μέρος παρουσιάζεται το θεωρητικό υπόβαθρο των εξισώσεων διαφορών, χαρακτηριστικό των οποίων είναι ότι διαδραματίζονται σε διακριτό χρόνο, και δίνεται έμφαση στις μη γραμμικές εξισώσεις διαφορών. Στο δεύτερο μέρος, γίνεται αναφορά στην αλιεία και συγκεκριμένα στην υπεραλίευση όπου μελετώνται προβλήματα που αφορούν τον πληθυσμό θαλάσσιων οργανισμών. Συγκεκριμένα, παρατίθενται μια γραμμική εξίσωση διαφορών που διέπεται από τον παγκόσμιο πληθυσμό των φαλαινών Minkel Whale
description: This dissertation examines the basic concepts of the dynamic systems and focuses on study of population in the aquatic world, which are solved by using difference equations. In summary, the paper is based on a bibliographic review and is divided into two main parts. The first part presents the theoretical background of the difference equations, a trait of which is that they take place at a discrete time, and emphasis is placed on non-linear difference equations. In the second part, reference is made to fishery and in particular to over-fishing, where problems related to the marine organisms are being studied. In particular, two non-linear difference equations are laid out that are regulated by the world whale Minkel Whale
A simple and controlled single electron transistor based on doping modulation in silicon nanowires
Creators: name: Hofheinz, M.
name: Jehl, X.
name: Sanquer, M.
name: Molas, G.
name: Vinet, M.
name: Deleonibus, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A simple and highly reproducible single electron transistor (SET) has been fabricated using gated silicon nanowires. The structure is a metal-oxide-semiconductor field-effect transistor made on silicon-on-insulator thin films. The channel of the transistor is the Coulomb island at low temperature. Two silicon nitride spacers deposited on each side of the gate create a modulation of doping along the nanowire that creates tunnel barriers. Such barriers are fixed and controlled, like in metallic SETs. The period of the Coulomb oscillations is set by the gate capacitance of the transistor and therefore controlled by lithography. The source and drain capacitances have also been characterized. This design could be used to build more complex SET devices.
description: to be published in Applied Physics Letters
Uncovering Thermal and Electrical Properties of Sb2Te3/GeTe Superlattice Films
Creators: name: Kwon, Heungdong
name: Khan, Asir Intisar
name: Perez, Christopher
name: Asheghi, Mehdi
name: Pop, Eric
name: Goodson, Kenneth E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Superlattice-like phase change memory (SL-PCM) promises lower switching current than conventional PCM based on Ge2Sb2Te5 (GST). However, a fundamental understanding of SL-PCM requires detailed characterization of the interfaces within such a SL. Here, we explore the electrical and thermal transport of SLs with deposited Sb2Te3 and GeTe alternating layers of various thicknesses. We find up to ~4X reduction of the effective cross-plane thermal conductivity of the SL stack (as-deposited polycrystalline) compared to polycrystalline GST (as-deposited amorphous and later annealed) due to the thermal interface resistances within the SL. Thermal measurements with varying periods of our SLs show a signature of phonon coherence with a transition from wave-like to particle-like phonon transport, further described by our modeling. Electrical resistivity measurements of such SLs reveal strong anisotropy (~2000X) between the in-plane and cross-plane directions due to the weakly interacting van der Waals gaps. This work uncovers electro-thermal transport in SLs based on Sb2Te3 and GeTe, for improved design of low-power PCM.
Tax avoidance : the Canadian experience
Creators: name: Michie, Jane Heddle
Publisher: name: University of British Columbia
Year: 2009

description: Section 245 was proposed as part of the tax reform package initiated by the government on 18 June, 1987. It introduced an extended general anti-avoidance rule into Canadian tax law. The rule has been in effect since September 13, 1988, but has yet to be judicially considered. This paper adopts a methodology which incorporates a political perspective. In particular, the rule is analyzed within the general environment - the socio-political, economic and historical backgrounds - in existence at that time. It was felt that such an approach was necessary to explain certain issues. For example, why the Canadian government decided to introduce section 245 and why certain modifications were made to the proposal in its passage through the legislative process. Overall, this paper hopes to extend our understanding of the rule by exposing the factors which created a favourable political environment for the enactment of the provision.
Additional file 2 of Identifying altered developmental pathways in human globoid cell leukodystrophy iPSCs-derived NSCs using transcriptome profiling
Creators: name: Lv, Yafeng
name: Qin, Yu
name: Wang, Jing
name: Tian, Guoshuai
name: Wang, Wei
name: Cao, Chunyu
name: Zhang, Ye
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2: Supplementary Table S2. Primers used i real time quantitative PCR and sanger sequencing.
Microstructure of neat alcohols
Creators: name: Perera, Aurelien
name: Sokolic, Franjo
name: Zoranic, Larisa
Publisher: name: arXiv
Year: 2007
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Formation of microstructure in homogeneous associated liquids is analysed through the density-density pair correlation functions, both in direct and reciprocal space, as well as an effective local one-body density function. This is illustrated through a molecular dynamics study of two neat alcohols, namely methanol and \emph{tert}-butanol, which have a rich microstructure: chain-like molecular association for the former and micelle-like for the latter. The relation to hydrogen bonding interaction is demonstrated. The apparent failure to find microstructure in water -a stronger hydrogen bonding liquid- with the same tools, is discussed.
Quantum gravity at a TeV and the renormalization of Newton's constant
Creators: name: Calmet, Xavier
name: Hsu, Stephen D. H.
name: Reeb, David
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We examine whether renormalization effects can cause Newton's constant to change dramatically with energy, perhaps even reducing the scale of quantum gravity to the TeV region without the introduction of extra dimensions. We examine a model that realizes this possibility and describe experimental signatures from production of small black holes.
description: 5 pages, 2 figures, revtex; minor changes in v2 (version published in Phys. Rev. D)
Trace Anomaly in Quantum Spacetime Manifold
Creators: name: Spallucci, Euro
name: Smailagic, Anais
name: Nicolini, Piero
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we investigate the trace anomaly in a spacetime where single events are de-localized as a consequence of short distance quantum coordinate fluctuations. We obtain a modified form of heat kernel asymptotic expansion which does not suffer from short distance divergences. Calculation of the trace anomaly is performed using an IR regulator in order to circumvent the absence of UV infinities. The explicit form of the trace anomaly is presented and the corresponding 2D Polyakov effective action and energy momentumtensor are obtained. The vacuum expectation value of the energy momentum tensor in the Boulware, Hartle-Hawking and Unruh vacua is explicitly calculated in a (rt)-section of a recently found, noncommutative geometry inspired, Schwarzschild-like solution of the Einstein equations. The standard short distance divergences in the vacuum expectation values are regularized in agreement with the absence of UV infinities removed by quantum coordinate fluctuations.
description: 15pages, RevTex, no figures, 1 Table
Extremal general affine surface areas
Creators: name: Hoehner, Steven
Publisher: name: arXiv
Year: 2021
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 52A20, 52A23, 52A40

description: For a convex body $K$ in $\mathbb{R}^n$, we introduce and study the extremal general affine surface areas, defined by \[ {\rm IS}_φ(K):=\sup_{K^\prime\subset K}{\rm as}_φ(K),\quad {\rm os}_ψ(K):=\inf_{K^\prime\supset K}{\rm as}_ψ(K) \] where ${\rm as}_φ(K)$ and ${\rm as}_ψ(K)$ are the $L_φ$ and $L_ψ$ affine surface area of $K$, respectively. We prove that there exist extremal convex bodies that achieve the supremum and infimum, and that the functionals ${\rm IS}_φ$ and ${\rm os}_ψ$ are continuous. In our main results, we prove Blaschke-Santaló type inequalities and inverse Santaló type inequalities for the extremal general affine surface areas. This article may be regarded as an Orlicz extension of the recent work of Giladi, Huang, Schütt and Werner (2020), who introduced and studied the extremal $L_p$ affine surface areas.
description: 24 pages; to appear in Journal of Mathematical Analysis and Applications
Feedback Shaping: A Modeling Approach to Nurture Content Creation
Creators: name: Tu, Ye
name: Lo, Chun
name: Yuan, Yiping
name: Chatterjee, Shaunak
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Social media platforms bring together content creators and content consumers through recommender systems like newsfeed. The focus of such recommender systems has thus far been primarily on modeling the content consumer preferences and optimizing for their experience. However, it is equally critical to nurture content creation by prioritizing the creators' interests, as quality content forms the seed for sustainable engagement and conversations, bringing in new consumers while retaining existing ones. In this work, we propose a modeling approach to predict how feedback from content consumers incentivizes creators. We then leverage this model to optimize the newsfeed experience for content creators by reshaping the feedback distribution, leading to a more active content ecosystem. Practically, we discuss how we balance the user experience for both consumers and creators, and how we carry out online A/B tests with strong network effects. We present a deployed use case on the LinkedIn newsfeed, where we used this approach to improve content creation significantly without compromising the consumers' experience.
Null shells: general matching across null boundaries and connection with cut-and-paste formalism
Creators: name: Manzano, M.
name: Mars, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Null shells are a useful geometric construction to study the propagation of infinitesimally thin concentrations of massless particles or impulsive waves. In this paper, we determine and study the necessary and sufficient conditions for the matching of two spacetimes with respective null embedded hypersurfaces as boundaries. Whenever the matching is possible, it is shown to depend on a diffeomorphism between the set of null generators in each boundary and a scalar function, called step function, that determines a shift of points along the null generators. Generically there exists at most one possible matching but in some circumstances this is not so. When the null boundaries are totally geodesic, the point-to-point identification between them introduces a freedom whose nature and consequences are analyzed in detail. The expression for the energy-momentum tensor of a general null shell is also derived. Finally, we find the most general shell (with non-zero energy, energy flux and pressure) that can be generated by matching two Minkowski regions across a null hyperplane. This allows us to show how the original Penrose's cut-and-paste construction fits and connects with the standard matching formalism.
description: 35 pages, 3 figures
Quantitative synthesis for concurrent programs
Creators: name: Chatterjee, Krishnendu
name: Cerny, Pavol
name: Henzinger, Thomas
name: Radhakrishna, Arjun
name: Singh, Rohit
Publisher: name: IST Austria
Year: 2010
Subjects: 000 Computer science, knowledge & general works

description: We present an algorithmic method for the synthesis of concurrent programs that are optimal with respect to quantitative performance measures. The input consists of a sequential sketch, that is, a program that does not contain synchronization constructs, and of a parametric performance model that assigns costs to actions such as locking, context switching, and idling. The quantitative synthesis problem is to automatically introduce synchronization constructs into the sequential sketch so that both correctness is guaranteed and worst-case (or average-case) performance is optimized. Correctness is formalized as race freedom or linearizability. We show that for worst-case performance, the problem can be modeled as a 2-player graph game with quantitative (limit-average) objectives, and for average-case performance, as a 2 1/2 -player graph game (with probabilistic transitions). In both cases, the optimal correct program is derived from an optimal strategy in the corresponding quantitative game. We prove that the respective game problems are computationally expensive (NP-complete), and present several techniques that overcome the theoretical difficulty in cases of concurrent programs of practical interest. We have implemented a prototype tool and used it for the automatic synthesis of programs that access a concurrent list. For certain parameter values, our method automatically synthesizes various classical synchronization schemes for implementing a concurrent list, such as fine-grained locking or a lazy algorithm. For other parameter values, a new, hybrid synchronization style is synthesized, which uses both the lazy approach and coarse-grained locks (instead of standard fine-grained locks). The trade-off occurs because while fine-grained locking tends to decrease the cost that is due to waiting for locks, it increases cache size requirements.
Term-community-based topic detection with variable resolution
Creators: name: Hamm, Andreas
name: Odrowski, Simon
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences
subject: I.2.7; I.5.3

description: Network-based procedures for topic detection in huge text collections offer an intuitive alternative to probabilistic topic models. We present in detail a method that is especially designed with the requirements of domain experts in mind. Like similar methods, it employs community detection in term co-occurrence graphs, but it is enhanced by including a resolution parameter that can be used for changing the targeted topic granularity. We also establish a term ranking and use semantic word-embedding for presenting term communities in a way that facilitates their interpretation. We demonstrate the application of our method with a widely used corpus of general news articles and show the results of detailed social-sciences expert evaluations of detected topics at various resolutions. A comparison with topics detected by Latent Dirichlet Allocation is also included. Finally, we discuss factors that influence topic interpretation.
description: 31 pages, 6 figures
Αυτόματα μεταβλητών με βάρη και απομείωση σε άπειρες λέξεις
Creators: name: Παπανικολάου, Γεώργιος Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Αυτόματα μεταβλητών
Αυτόματα με βάρη και απομείωση
Αυτόματα σε άπειρες λέξεις
Variable automata
Weighted automata with discounting
Automata over infinite words

description: Ορίζουμε τα Buchi αυτόματα με βάρη και μεταβλητές με discounting στον Rmax ημιδακτύλιο. Αποδεικνύουμε ότι η κλάση της συμπεριφοράς τους είναι κλειστή με τις πράξεις μέγιστο, βαθμωτό άθροισμα, Hadamard άθροισμα, d-Cauchy άθροισμα και την d-ω-επανάληψη. Ακόμα εισάγουμε την έννοια των Muller αυτομάτων με βάρη και μεταβλητές με discounting στον Rmax ημιδακτύλιο και δείχνουμε την εκφραστική ισοδυναμία τους με τα Buchi αυτόματα με βάρη και μεταβλητές με discounting. Έπειτα θεωρούμε τις ρητές σειρές πάνω σε άπειρες λέξεις και άπειρα αλφάβητα με discounting και διατυπώνουμε ένα θεώρημα τύπου Kleene-Schutzenberger. Τέλος, παίρνουμε ένα d-ω-WVMSO λογικό χαρακτηρισμό για την κλάση των σειρών που αναγνωρίζονται από Buchi αυτόματα με βάρη και μεταβλητές με discounting
description: We introduce weighted variable Buchi automata with discounting on the Rmax semiring. We prove that the class of their behaviors is closed under max, scalar sum, Hadamard sum, d-Cauchy sum and d-ω-iteration. We introduce also weighted variable Muller automata with discounting on Rmax semiring and show their expressive equivalence to weighted variable Buchi automata with discounting. Then we consider rational series over infinite words and infinite alphabets with discounting and state a Kleene-Schutzenberger type theorem. Finally, we obtain an d-ω-WVMSO logical characterization for the class of series accepted by weighted variable Buchi automata with discounting
Βαθιά ενισχυτική μάθηση για ρομποτική αντίληψη και πλοήγηση
Creators: name: Τζίμας, Αλέξανδρος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Μηχανική μάθηση
Βαθιά ενισχυτική μάθηση
Μη επανδρωμένο εναέριο όχημα
Machine learning
Deep reinforcement learning
Unmanned aerial vehicle

description: Η παρούσα διπλωματική εργασία ασχολείται με την έννοια της βαθιάς ενισχυτικής μάθησης καθώς και τις μεθόδους της. Η βαθιά ενισχυτική μάθηση είναι ένας τομέας της μηχανικής μάθησης ο οποίος τα τελευταία χρόνια παρουσιάζει αλματώδης εξέλιξη και οι τεχνικές του βρίσκουν εφαρμογή σε ποικίλα προβλήματα. Ένας από τους τομείς που έχουν ισχυρή σύνδεση με την ενισχυτική μάθηση είναι αυτός της ρομποτικής και είναι και αυτός που θα μας απασχολήσει στην εργασία αυτή. Στα πλαίσια της εργασίας, παρουσιάζονται οι βασικές έννοιες της ενισχυτικής μάθησης καθώς και το μαθηματικό υπόβαθρο που απαιτείται για την κατανόηση τους. Επίσης, γίνεται μια επισκόπηση κάποιων εκ των βασικότερων αλγορίθμων ενισχυτικής μάθησης που έχουν αναπτυχθεί για την επίλυση προβλημάτων. Στη συνέχεια, αναλύονται τα προβλήματα που επιχειρήθηκε να λυθούν καθώς και τα αποτελέσματα που προέκυψαν. Πιο συγκεκριμένα, γίνεται προσπάθεια να λυθούν προβλήματα που έχουν να κάνουν με τον έλεγχο, την πλοήγηση και την επίτευξη στόχων με τη χρήση μη επανδρωμένων εναέριων οχημάτων (drones)
description: The present diploma thesis focuses on the concept of deep reinforcement learning and its methods. Deep reinforcement learning is a sub-field of machine learning which has grown rapidly in the past few years and its techniques find use in a variety of problems. One of the fields that have a strong connection with reinforcement learning is that of robotics, which is also the focus of this project. In this thesis project, we offer an overview of the fundamental concepts of reinforcement learning as well as the basic mathematical formalization that is needed to grasp those. Furthermore, we present briefly some of the most successful algorithms used to solve reinforcement learning problems. Next, we analyze the problems that we attempted to solve with reinforcement learning and after that we present the achieved results. More specifically, in this project, we try to solve problems that revolve around controlling, navigating and achieving goals with an unmanned aerial vehicle (drone)
Influenza-Monatsbericht
Creators: name: Koch-Institut, Robert
Publisher: name: Robert Koch-Institut
Year: 2019
Subjects: subject: AGI
subject: Influenza-Monatsbericht
subject: Arbeitsgemeinschaft Influenza
subject: 610 Medizin und Gesundheit

description: Die Aktivität der akuten Atemwegserkrankungen (ARE) ist von der 25. bis zur 28. Kalenderwoche (KW) 2019 insgesamt weiter zurückgegangen, die Werte des Praxisindex lagen bundesweit im Bereich der AREHintergrund- Aktivität. Die Werte der Konsultationsinzidenz sind im Berichtszeitraum insgesamt stabil geblieben und befinden sich auf einem für die Jahreszeit üblichen niedrigen Niveau. Im Nationalen Referenzzentrum für Influenza (NRZ) wurden zwischen der 25. und der 28. KW 2019 in 32 (35 %) von 91 Sentinelproben respiratorische Viren identifiziert. Es wurden hauptsächlich Rhinoviren detektiert. Alle anderen untersuchten Atemwegsviren wurden seltener oder gar nicht nachgewiesen. In der 25. bis 28. Meldewoche (MW) wurden nach Infektionsschutzgesetz (IfSG) bislang 69 labordiagnostisch bestätigte Influenzafälle an das Robert Koch-Institut (RKI) übermittelt. Die Grippewelle begann in der 2. KW 2019 und endete in der 14. KW 2019.
A hadron model with breaking of spatial homogeneity of vacuum
Creators: name: Myasnikov, E. N.
name: Mastropas, E. V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A possible breaking of spatial homogeneity of vacuum due to the interaction between quark and Bose-field is analyzed. It is shown that in this case quark can be in a localized state (like wave packet). Energetic conditions for such a spontaneous symmetry breaking are found in suggested model. Possible consequences of such symmetry breaking, in particular, the origin of deep inelastic processes and quark confinement phenomenon are discussed.
description: 4 pages
Non-unitary neutrino mixing in short and long-baseline experiments
Creators: name: Forero, D. V.
name: Giunti, C.
name: Ternes, C. A.
name: Tortola, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Non-unitary neutrino mixing in the light neutrino sector is a direct consequence of type-I seesaw neutrino mass models. In these models, light neutrino mixing is described by a sub-matrix of the full lepton mixing matrix and, then, it is not unitary in general. In consequence, neutrino oscillations are characterized by additional parameters, including new sources of CP violation. Here we perform a combined analysis of short and long-baseline neutrino oscillation data in this extended mixing scenario. We did not find a significant deviation from unitary mixing, and the complementary data sets have been used to constrain the non-unitarity parameters. We have also found that the T2K and NOvA tension in the determination of the Dirac CP-phase is not alleviated in the context of non-unitary neutrino mixing.
description: 18 pages
Landeskundliches und kulturelles Lernen im griechischen schulischen Daf-Unterricht der Sekundarstufe I auf Grundlage des Curriculums Einheitlicher Lehrplan für Fremdsprachen (EPS-XG)
Creators: name: Ψύχου, Ιωάννα Σταύρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: διαπολιτισμική μάθηση
Ενιαίο Πρόγραμμα Σπουδών Ξένων Γλωσσών ΕΠΣ-ΞΓ
διαπολιτισμική ικανότητα
intercultural learning
Foreign Language Studies Program EPS-XG
intercultural competence
Interkulturelles Lernen
Einheitlicher Lehrplan für Fremdsprachen EPS-XG
Interkulturelle Kompetenz

description: Σκοπός της διατριβής ήταν να μελετηθεί, εάν και κατά πόσο τα διδακτικά βιβλία που χρησιμοποιούνται στα ελληνικά δημόσια σχολεία για την εκμάθηση της γερμανικής ως ξένης γλώσσας πληρούν τις προϋποθέσεις της πολιτισμικής και διαπολιτισμικής μάθησης καθώς και τους στόχους του νέου Προγράμματος Σπουδών Ξένων γλωσσών ΕΠΣ-ΞΓ. Στην εργασία παρουσιάζονται αναλυτικά οι νέες θεωρίες εκμάθησης της γερμανικής ως ξένης γλώσσας στα ελληνικά σχολεία με βάση το νέο Πρόγραμμα Σπουδών καθώς και οι στόχοι και οι νέοι μέθοδοι διδασκαλίας που περιλαμβάνονται σε αυτό. Τονίζεται ωστόσο η σημασία του πολιτισμού και του διαπολιτισμικού στοιχείου στην εκπαίδευση και πώς οι μαθητές, μαθήτριες μπορούν να αναπτύξουν διαπολιτισμική ικανότητα, η οποία είναι απαραίτητη στη σημερινή κοινωνία. Στη συνέχεια παρουσιάζονται αναλυτικά τα αποτελέσματα της έρευνας καθώς και προτάσεις ασκήσεων, οι οποίες δημιουργήθηκαν με βάση τους στόχους του νέου Προγράμματος Σπουδών Ξένων γλωσσών ΕΠΣ-ΞΓ
description: The aim of the present thesis was the study of whether teaching books used in Greek public schools for the learning of German as a foreign language meet the requirements of cultural and intercultural learning as well as the objectives of the new Foreign Language Studies Program EPS-XG. The thesis presents in detail the new theories of learning German as a foreign language in Greek schools based on the new curriculum, which aims and new teaching methods are included in it. However is emphasized the importance of culture and intercultural elements in education and how students can develop the intercultural competence that is needed in today’s society. Furthermore are presented the results of the research as well as suggestions of exercises, which are created in accordance with the objectives of the new Foreign Language Studies Program EPS-XG
The image of the peasant woman in selected works of Berthold Auerbach and Jeremias Gotthelf
Creators: name: Shinnors, Mary Bernice
Publisher: name: University of British Columbia
Year: 2008

description: This dissertation seeks t o achieve three objectives: (1) to draw attention to the genre of the "Dorfgeschichte," (2) to examine "Dorfgeschichten" which were highly acclaimed in nineteenth century Germany, but are dismissed by literary scholarship today, (3) and most importantly, to adjust decades of inveterate and misleading critical responses with regard to the writers Berthold Auerbach and Jeremias Gotthelf. Although Auerbach's Schwarzwalder Dorfgeschichten were received with great enthusiasm by the literati in nineteenth century Germany, his contribution to the genre is diminished by literary critics and historians today. Some, such as Hermann Boeschenstein, claim that the author "was merely ... sugar-coating the realities of peasant life , while having no real contacts with it . "On the other hand, although the majority of Gotthelfs shorter narrative works receive little scholarly attention , the consensus of critical opinion in regard to the author is that he possessed an "unexcelled insight into the peasant's inner life ." On the basis of my close analysis of Auerbach's and Gotthelfs respective texts : Schwarzwalder Dorfgeschichten (1843-1854), and Kleinere Erzahlunaen (1838-1852), [More abstract follows]
Optimal Approximation Rate of ReLU Networks in terms of Width and Depth
Creators: name: Shen, Zuowei
name: Yang, Haizhao
name: Zhang, Shijun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: This paper concentrates on the approximation power of deep feed-forward neural networks in terms of width and depth. It is proved by construction that ReLU networks with width $\mathcal{O}\big(\max\{d\lfloor N^{1/d}\rfloor,\, N+2\}\big)$ and depth $\mathcal{O}(L)$ can approximate a Hölder continuous function on $[0,1]^d$ with an approximation rate $\mathcal{O}\big(λ\sqrt{d} (N^2L^2\ln N)^{-α/d}\big)$, where $α\in (0,1]$ and $λ>0$ are Hölder order and constant, respectively. Such a rate is optimal up to a constant in terms of width and depth separately, while existing results are only nearly optimal without the logarithmic factor in the approximation rate. More generally, for an arbitrary continuous function $f$ on $[0,1]^d$, the approximation rate becomes $\mathcal{O}\big(\,\sqrt{d}\,ω_f\big( (N^2L^2\ln N)^{-1/d}\big)\,\big)$, where $ω_f(\cdot)$ is the modulus of continuity. We also extend our analysis to any continuous function $f$ on a bounded set. Particularly, if ReLU networks with depth $31$ and width $\mathcal{O}(N)$ are used to approximate one-dimensional Lipschitz continuous functions on $[0,1]$ with a Lipschitz constant $λ>0$, the approximation rate in terms of the total number of parameters, $W=\mathcal{O}(N^2)$, becomes $\mathcal{O}(\tfracλ{W\ln W})$, which has not been discovered in the literature for fixed-depth ReLU networks.
Το βίωμα του νοσηλευτικού προσωπικού με εγκαταλελειμμένα μωρά που φιλοξενούνται σε μονάδα νεογνών
Creators: name: Καρκαμπούνα, Αγγελική-Δήμητρα Σπυρίδωνα
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Εγκαταλελειμμένα βρέφη
ερμηνευτική φαινομενολογική ανάλυση
Νοσηλευτικό προσωπικό
Abandoned infants
Interpretative phenomenological analysis
Nursing staff

description: Η παρούσα εργασία έχει ως στόχο τη διερεύνηση του βιώματος του νοσηλευτικού προσωπικού της μονάδας νεογνών του Γενικού νοσοκομείου Ιωαννίνων «Γ. Χατζηκώστα», όπου φιλοξενούνται μωρά τα οποία έχουν εγκαταλειφθεί από τους γονείς τους. Πρόκειται για ποιοτική έρευνα βασισμένη στις αρχές της ερμηνευτικής φαινομενολογικής ανάλυσης, στην οποία πήραν μέρος τέσσερις νοσηλεύτριες της μονάδας και πραγματοποιήθηκε με τη μέθοδο των ημιδομημένων συνεντεύξεων . Η ανάλυση του υλικού οδήγησε στη δημιουργία τεσσάρων υπερθεμάτων: α) οι συνέπειες της απουσίας των γονέων για το νοσηλευτικό προσωπικό, β) τα συναισθήματα λόγω του αποχωρισμού από τα βρέφη, γ) οι ανάγκες του νοσηλευτριών και δ) η επίδραση της εμπειρίας σε προσωπικό επίπεδο. Τα αποτελέσματα έδειξαν ότι πρόκειται για μια έντονη συναισθηματική εμπειρία για το προσωπικό.
description: The purpose of the current study is to investigate the experience of nurses in the neonatal unit, which is part of the General Hospital of Ioannina, Greece, G. Hatzikosta, where abandoned infants are hospitalized. The study is a qualitative one, based on the principles of interpretative phenomenological analysis and was conducted with the participation of four female nurses of the unit and with the use of semi-structured interviews. As a result of the interviews’ analysis, four predominant themes where emerged: a) the impact of the parental absence on the nursing members, b) the feelings of the nurses as a consequence of the separation from the infants, c) the needs of the nursing staff, d) the impact of the experience in a personal level. The results of the study indicate that taking care of abandoned infants is an intense emotional experience for the nurses who look after them.
Additional file 3 of Identifying altered developmental pathways in human globoid cell leukodystrophy iPSCs-derived NSCs using transcriptome profiling
Creators: name: Lv, Yafeng
name: Qin, Yu
name: Wang, Jing
name: Tian, Guoshuai
name: Wang, Wei
name: Cao, Chunyu
name: Zhang, Ye
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 3: Supplementary Table S3. List of 30 the most dysregulated mRNAs in K-iPSC lines compared to AF-iPSC lines.
Potential energy threshold for nano-hillock formation by impact of slow highly charged ions on a CaF$_2$(111) surface
Creators: name: El-Said, A. S.
name: Meissl, W.
name: Simon, M. C.
name: López-Urrutia, J. R. Crespo
name: Lemell, C.
name: Burgdörfer, J.
name: Gebeshuber, I. C.
name: Winter, HP.
name: Ullrich, J.
name: Trautmann, C.
name: Toulemonde, M.
name: Aumayr, F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We investigate the formation of nano-sized hillocks on the (111) surface of CaF$_2$ single crystals by impact of slow highly charged ions. Atomic force microscopy reveals a surprisingly sharp and well-defined threshold of potential energy carried into the collision of about 14 keV for hillock formation. Estimates of the energy density deposited suggest that the threshold is linked to a solid-liquid phase transition (``melting'') on the nanoscale. With increasing potential energy, both the basal diameter and the height of the hillocks increase. The present results reveal a remarkable similarity between the present predominantly potential-energy driven process and track formation by the thermal spike of swift ($\sim$ GeV) heavy ions.
description: 10 pages, 2 figures
On implicit and explicit discretization schemes for parabolic SPDEs in any dimension
Creators: name: Millet, Annie
name: Morien, Pierre-Luc
Publisher: name: arXiv
Year: 2006
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60H15 65C30 35R60 65M06

description: We study the speed of convergence of the explicit and implicit space-time discretization schemes of the solution $u(t,x)$ to a parabolic partial differential equation in any dimension perturbed by a space-correlated Gaussian noise. The coefficients only depend on $u(t,x)$ and the influence of the correlation on the speed is observed.
Το έγκλημα της συμμετοχής σε αυτοκτονία
Creators: name: Ηλιάδης, Θεόδωρος Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Έγκλημα
Συμμετοχή
Αυτοκτονία
Crime
Participation
Suicide

description: Σκοπό της παρούσας διπλωματικής αποτέλεσε η συστηματική ανάλυση των επιμέρους στοιχείων του εγκλήματος της συμμετοχής σε αυτοκτονία (301 Π.Κ.). Στο πρώτο μέρος προηγήθηκε η δογματική και φιλοσοφική προσέγγιση του δικαιώματος αυτοδιάθεσης του ατόμου καθώς και η παρουσίαση των θεωρητικών τάσεων σχετικά με το αμφισβητούμενο «δικαίωμα στον θάνατο». Εν συνεχεία, προχωρήσαμε στην αναζήτηση των δικαιοπολιτικών θεμελίων τυποποίησης του εγκλήματος και σε συνοπτική παρουσίαση των αντίστοιχων κυρωτικών διατάξεων των λοιπών ευρωπαϊκών κρατών. Ακολούθως προσεγγίσαμε το ζωτικής σημασίας ζήτημα της αυτοτέλειας του άδικο της πράξης, παρουσιάζοντας και τις μειοψηφικές απόψεις σε σύγχρονη και προγενέστερη θεωρία. Έπειτα, σειρά πήρε η παρουσίαση των αντικειμενικών και υποκειμενικών στοιχείων του εγκλήματος, με ιδιαίτερη μνεία στα λεπτά και συνάμα αμφισβητούμενα στοιχεία αυτών. Προτού δε ολοκληρώσουμε, αναδείξαμε ορισμένα ειδικά ζητήματα που κατά την κρίση μας παρουσιάζουν ενδιαφέρον, διατυπώνοντας και τους δικούς μας προβληματισμούς και θέσεις
description: The aim of the present thesis was the systematical analysis of the individual elements on the crime of participation in suicide (article 301 P.C.). In the first part, the doctrinal and philosophical approach of the person's right of self-determination was carried out as well as the presentation of the theoretical tendencies concerning the controversial "right to death". After that, we proceeded to look for the legal basis of standardization of the crime and to summarize the respective ratifications of the other European states. Next, we approached the crucial issue of the independence of the unfairness of the act, presenting the minority views in contemporary and earlier theory. Then, the presentation of the objective and subjective elements of the crime took place, with particular reference to certain subtle and controversial issues. Before we conclude, we highlighted some specific issues that we consider to be of wide interest and also expressed our own concerns and positions
Nonequilibrium Lattice Dynamics in Monolayer MoS2
Creators: name: Caruso, Fabio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The coupled nonequilibrium dynamics of electrons and phonons in monolayer MoS2 is investigated by combining first-principles calculations of the electron-phonon and phonon-phonon interaction with the time-dependent Boltzmann equation. Strict phase-space constraints in the electron-phonon scattering are found to influence profoundly the decay path of excited electrons and holes, restricting the emission of phonons to crystal momenta close to few high-symmetry points in the Brillouin zone. As a result of momentum selectivity in the phonon emission, the nonequilibrium lattice dynamics is characterized by the emergence of a highly-anisotropic population of phonons in reciprocal space, which persists for up to 10 ps until thermal equilibrium is restored by phonon-phonon scattering. Achieving control of the nonequilibrium dynamics of the lattice may provide unexplored opportunities to selectively enhance the phonon population of two-dimensional crystals and, thereby, transiently tailor electron-phonon interactions over sub-picosecond time scales.
The half-metallic ferromagnet Co2Mn0.5Fe0.5Si
Creators: name: Balke, Benjamin
name: Kandpal, Hem C.
name: Fecher, Gerhard H.
name: Felser, Claudia
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Electronic structure calculation were used to predict a new material for spintronic applications. Co2Mn0.5Fe0.5Si is one example which is stable against on-site correlation and disorder effects due to the position of the Fermi energy in the middle of the minority band gap. Experimentally the sample were made exhibiting L21 structure and a high magnetic order.
description: 5 pages, 2 Figures, J. Magn. Magn. Mater. accepted
Scienza e conoscenza: sul valore del metodo scientifico
Creators: name: Appolloni, Riccardo Luciano
Publisher: name: Rivista Italiana di Filosofia Analitica Junior
Year: 2014

description: L’antico problema di riconoscere una forma di conoscenza oggettiva
e fondata è ancora vivo; in questo scritto cercheremo di capire se la scienza moderna possa essere una forma di conoscenza tale e, quindi, privilegiata. A tal fine ci serviremo del pensiero di alcuni epistemologi e scienziati. In particolare, nel trattare il problema del valore epistemologico del metodo scientifico, non potremo esimerci dal fare i conti con l’anarchismo metodologico di Paul K. Feyerabend, verso il quale l’esito del presente articolo sarà fondamentalmente critico. A partire dai fecondi spunti di questo filosofo, tenteremo dapprima di analizzare i caratteri distintivi della scienza e del suo metodo rispetto ad altre forme di sapere; quindi, cercheremo di individuare alcuni limiti della conoscenza razionale.
description: Rivista Italiana di Filosofia Analitica Junior, Vol 5, No 1 (2014)
Il problema dell'individualità nelle scienze biologiche
Creators: name: Dieli, Anna Maria
Publisher: name: Rivista Italiana di Filosofia Analitica Junior
Year: 2014

description: Tra tutti gli individui, l’individuo biologico rappresenta spesso il migliore esempio: allorché si ha difficoltà nello spiegare cos’è un individuo, si ricorre all’individuo biologico, come esempio la cui individualità è incontrovertibile. Il problema dell’individualità in biologia è dunque cruciale per uno studio filosofico del concetto di individuo, in quanto l’individuo biologico è spesso portato come esempio paradigmatico di individuo. Tuttavia, quando si parla di individuo biologico si pensa per lo più ai vertebrati e in particolare ai mammiferi, senza problematizzare la questione di cosa conti come individuo biologico in generale. Così facendo, si presuppone che tale concetto in biologia non sia problematico: quando si guarda però ai dibattiti che animano la filosofia della biologia, si scopre che si è lungi dall’aver trovato una definizione di individuo biologico. In effetti, allorché si distoglie lo sguardo dagli individui di senso comune (cioè gli organismi e in particolare i vertebrati), ci si rende conto che la biologia presenta tutta una serie di entità il cui statuto di individui è spesso problematico: ad esempio, è difficile stabilire se geni o specie siano degli individui. Partendo dal presupposto che a fornirci un’ontologia siano le teorie scientifiche, il dibattito verte su cosa conta come individuo biologico per la teoria della selezione naturale: si tratta del dibattito sulle unità di elezione. Analizzare il dibattito sull’unità di selezione alla ricerca di una nozione valida di individuo biologico significa sottoporre al banco di prova della scienza (la biologia) una nozione metafisica (che riguarda cioè la nostra ontologia) quale quella di individuo. La posta in gioco è la possibilità di una metafisica revisionista: si tratta di chiedersi, cioè, se ciò che ci dice la scienza deve sostituire ciò che ci dice il senso
comune, o viceversa può confermarlo.
description: Rivista Italiana di Filosofia Analitica Junior, Vol 5, No 1 (2014)
On the applicability of the layered sine-Gordon model for Josephson-coupled high-T_c layered superconductors
Creators: name: Nandori, I.
name: Jentschura, U. D.
name: Nagy, S.
name: Sailer, K.
name: Vad, K.
name: Meszaros, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We find a mapping of the layered sine-Gordon model to an equivalent gas of topological excitations and determine the long-range interaction potentials of the topological defects. This enables us to make a detailed comparison to the so-called layered vortex gas, which can be obtained from the layered Ginzburg-Landau model. The layered sine-Gordon model has been proposed in the literature as a candidate field-theoretical model for Josephson-coupled high-T_c superconductors, and the implications of our analysis for the applicability of the layered sine-Gordon model to high-T_c superconductors are discussed. We are led to the conjecture that the layered sine--Gordon and the layered vortex gas models belong to different universality classes. The determination of the critical temperature of the layered sine-Gordon model is based on a renormalization-group analysis.
description: 7 pages, accepted for publication in J. Phys.: Condens. Matter
Time-resolved ARPES on cuprates: Tracking the low-energy electrodynamics in the time domain
Creators: name: Zonno, Marta
name: Boschini, Fabio
name: Damascelli, Andrea
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The pursuit of a comprehensive understanding of the dynamical nature of intertwined orders in quantum matter has fueled the development of several new experimental techniques, including time- and angle-resolved photoemission spectroscopy (TR-ARPES). In this regard, the study of copper-oxide high-temperature superconductors, prototypical quantum materials, has furthered both the technical advancement of the experimental technique, as well as the understanding of their correlated dynamical properties. Here, we provide a brief historical overview of the TR-ARPES investigations of cuprates, and review what specific information can be accessed via this approach. We then present a detailed discussion of the transient evolution of the low-energy spectral function both along the gapless nodal direction and in the near-nodal superconducting gap region, as probed by TR-ARPES on Bi-based cuprates.
Delivering the Deadly Blow: Understanding Collective Responsibility
Creators: name: Roberts, Joseph Tarquin Foulkes
Publisher: name: Rivista Italiana di Filosofia Analitica Junior
Year: 2014

description: This paper deals with ascriptions of collective responsibility and the
distribution of the responsibility from the group to the individuals. Specifically, this article proposes a solution to cases of collective responsibility which is also sensitive to the demands of normative individualism. The article contends that Judith Jarvis Thomson’s concept of a Minimally Decent Samaritan is a valuable tool for the correct ascription of responsibility to individuals from collectives as it is neither excessively demanding, like Arendt’s and Jaspers’ accounts, or not emanding enough. It is contended that being a Minimally Decent Samaritan is enough to distance oneself from the group and, hence, avoid being held responsible.
description: Rivista Italiana di Filosofia Analitica Junior, Vol 5, No 1 (2014)
A Formal Analysis of the Best System Account of Lawhood
Creators: name: Cinà, Giovanni
Publisher: name: Rivista Italiana di Filosofia Analitica Junior
Year: 2014

description: In this work I attempt a reformulation of Lewis’ Best System Account, explicitating the underlying formal conception of scientific theories and trying to define the concepts of simplicity, strength and balance. This essay is divided in three sections. In the first one I introduce the Best System Account of natural laws and formulate the need for its improvement. In the second section I outline a formal framework where the notions of deductive system and scientific theory can be defined precisely. In the last section the notions of simplicity, strength and balance are analyzed. To conclude I argue that the framework proposed does indeed provide the precision required. In addition, it also offers interesting insights on the plurality of concepts of simplicity, strength and balance, and on the general enterprise of formalizing scientific theories.
description: Rivista Italiana di Filosofia Analitica Junior, Vol 5, No 1 (2014)