2,875 research outputs found
Editorial zum Schwerpunktthema „Wandel von Lern- und Lehrmaterialien"
In diesem Beitrag wird eine kurze Einleitung als auch ein kurzer Überblick über die Artikel [dieses Heftes] zum Themenschwerpunkt "Wandel von Lern- und Lehrmaterialien" gegeben sowie ein Dank an die Gutachterinnen und Gutachter ausgesprochen. (DIPF/Orig.
Zeig doch mal! - Tipps für die Erstellung von Lernvideos in Lege- und Zeichentechnik
In populären Erklär- und Lernvideos kommen immer wieder Zeichen- und Legetechniken zum Einsatz, bei der Bilder live gezeichnet oder Papierfiguren hineingelegt und verschoben werden, um Lerninhalte zu verdeutlichen. Populär geworden ist diese Methode durch die Videoreihe von Common Craft "in Plain English", bei der die Funktionalität unterschiedlicher sozialer Anwendungen erklärt wird. Die Autorin und der Autor schreiben in Form eines Werkstattberichtes von ihren Erfahrungen bei der Erstellung und dem Einsatz von Lernvideos in der Legetechnik und geben Empfehlungen für Nachahmer/innen.
24.04.2014 | Sandra Schön (Salzburg) & Martin Ebner (Graz
Experiences with iPads in primary schools
Los ordenadores-tablet están acaparando toda la atención en estos momentos y forman parte de
nuestra vida cotidiana. Por ello, no es de extrañar que en el ámbito educativo se hayan arbitrado
fórmulas para incorporarlos en las aulas. La presente investigación pretende mostrar las
estrategias llevadas a cabo en determinadas experiencias con iPads en escuelas primarias
austriacas. Por un lado, se describe el desarrollo de las aplicaciones (apps) educativas apropiadas
para su empleo en aulas. Y por otro, cada lección apoyada en las tecnologías es analizada y
evaluada desde una perspectiva técnica. Las aportaciones más representativas de la investigación
evidencian las diversas fórmulas de utilización de este tipo de ordenadores para promover una
influencia positiva en la enseñanza, también se apuntan recomendaciones prácticas sobre cómo
deberían ser usados en aulasTablet computers gain enormous attention nowadays and become more and more part of our daily
life. Due to this it is not astonishing that even the educational sector is thinking about the use of
such wearable devices in the classroom. Our research study aims to give insights about real life
experiences with iPads in Austrian primary schools. Therefore we describe the development of
appropriate learning apps and their use in classrooms. Finally each technology-enhanced lesson is
observed as well as evaluated afterwards with the help of the cut-off technique.
The research work carries out different circumstances the use of tablet computers has a positive
influence on teaching and learning and gives practical hints how they should be used in classrooms.Grupo FORCE (HUM-386). Departamento de Didáctica y Organización Escolar de la Universidad de Granad
Characterizations of non-normalized discrete probability distributions and their application in statistics
From the distributional characterizations that lie at the heart of Stein’s method we derive explicit formulae for the mass functions of discrete probability laws that identify those distributions. These identities are applied to develop tools for the solution of statistical problems. Our characterizations, and hence the applications built on them, do not require any knowledge about normalization constants of the probability laws. To demonstrate that our statistical methods are sound, we provide comparative simulation studies for the testing of fit to the Poisson distribution and for parameter estimation of the negative binomial family when both parameters are unknown. We also consider the problem of parameter estimation for discrete exponential-polynomial models which generally are non-normalized
A Unifying Splitting Framework
International audienceAVATAR is an elegant and effective way to split clauses in a saturation prover using a SAT solver. But is it refutationally complete? And how does it relate to other splitting architectures? To answer these questions, we present a unifying framework that extends a saturation calculus (e.g., superposition) with splitting and embeds the result in a prover guided by a SAT solver. The framework also allows us to study locking, a subsumption-like mechanism based on the current propositional model. Various architectures are instances of the framework, including AVATAR, labeled splitting, and SMT with quantifiers
Methods and formulas for calculating the strength of plate and shell constructions as used in airplane design
This report is a compilation of previously published articles on formulas and methods of calculation for the determination of the strength and stability of plate and shell construction as employed in airplane design. In particular, it treats the problem of isotropic, orthotopic, and stiffened rectangular plates, thin curved panels, and circular cylinders under various loading conditions. The purpose of appending the pertinent literature references following the subjects discussed was to facilitate a comprehensive study of the treated problems
Logistic or not Logistic?
We propose a new class of goodness-of-fit tests for the logistic distribution based on a characterization related to the density approach in the context of Stein\u27s method. This characterization-based test is a first of its kind for the logistic distribution. The asymptotic null distribution of the test statistic is derived and it is shown that the test is consistent against fixed alternatives. The finite sample power performance of the newly proposed class of tests is compared to various existing tests by means of a Monte Carlo study. It is found that this new class of tests are especially powerful when the alternative distributions are heavy tailed, like Student\u27s t and Cauchy, or for skew alternatives such as the log-normal, gamma and chi-square distributions
Novelty Search in Competitive Coevolution
One of the main motivations for the use of competitive coevolution systems is
their ability to capitalise on arms races between competing species to evolve
increasingly sophisticated solutions. Such arms races can, however, be hard to
sustain, and it has been shown that the competing species often converge
prematurely to certain classes of behaviours. In this paper, we investigate if
and how novelty search, an evolutionary technique driven by behavioural
novelty, can overcome convergence in coevolution. We propose three methods for
applying novelty search to coevolutionary systems with two species: (i) score
both populations according to behavioural novelty; (ii) score one population
according to novelty, and the other according to fitness; and (iii) score both
populations with a combination of novelty and fitness. We evaluate the methods
in a predator-prey pursuit task. Our results show that novelty-based approaches
can evolve a significantly more diverse set of solutions, when compared to
traditional fitness-based coevolution.Comment: To appear in 13th International Conference on Parallel Problem
Solving from Nature (PPSN 2014
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