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Algebraic classification of the Weyl tensor : selected applications
Pravda, Vojtěch
2012 - anglický
Selected applications of the algebraic classification of tensors on Lorentzian manifolds of arbitrary dimension are discussed. We clarify some aspects of the relationship between invariants of tensors and their algebraic class, discuss generalization of Newman-Penrose and Geroch-Held-Penrose formalisms to arbitrary dimension and study an application of the algebraic classification to the case of quadratic gravity.
Klíčová slova:
Einstein spacetimes; algebraic classification
Dokument je dostupný na externích webových stránkách.
Algebraic classification of the Weyl tensor : selected applications
Selected applications of the algebraic classification of tensors on Lorentzian manifolds of arbitrary dimension are discussed. We clarify some aspects of the relationship between invariants of tensors ...
On the motion of rigid bodies in a compressible viscous fluid under the action of gravitational forces
Ducomet, B.; Nečasová, Šárka
2012 - anglický
The global existence of weak solution is proved for the problem of the motion of several rigid bodies in a barotropic compressible fluid, under the influence of gravitational forces.
Klíčová slova:
compressible viscous fluid; motion
Dokument je dostupný na externích webových stránkách.
On the motion of rigid bodies in a compressible viscous fluid under the action of gravitational forces
The global existence of weak solution is proved for the problem of the motion of several rigid bodies in a barotropic compressible fluid, under the influence of gravitational forces.
Recent development of the DML-CZ and its current state
Rákosník, Jiří
2011 - anglický
The project DML-CZ: The Czech Digital Mathematics Library has been implemented since 2005 and in 2010 switched over to routine operation. This report describes progress, growth and usage of the DML-CZ, the experience from cooperation with content providers in the designed editorial workflow, some newly implemented features, adjustments of the workflow following from both the ongoing practical experience and the requirements of the advancing EuDML project, the general public acceptance and attendance and the suggested economic model for sustainable development.
Klíčová slova:
digital mathematics library; retrodigitization; DML-CZ
Plné texty jsou dostupné v digitálním repozitáři Akademie Věd.
Recent development of the DML-CZ and its current state
The project DML-CZ: The Czech Digital Mathematics Library has been implemented since 2005 and in 2010 switched over to routine operation. This report describes progress, growth and usage of the ...
The search for ways of enhancement of knowledge base for teaching
Tichá, Marie
2011 - anglický
Poster shows a problem posing as a significant way to improving teachers' knowledge. The presentation focused on the division of fractions. The presentation displayed examples of common misconceptions and their probable cause.
Klíčová slova:
teachers' competence; teachers' knowledge; problem posing
Plné texty jsou dostupné na vyžádání prostřednictvím repozitáře Akademie věd.
The search for ways of enhancement of knowledge base for teaching
Poster shows a problem posing as a significant way to improving teachers' knowledge. The presentation focused on the division of fractions. The presentation displayed examples of common misconceptions ...
Representtion of basic isometries through square ornaments
Roubíček, Filip
2011 - anglický
The poster deals with basic isometries: point reflection, rotation and translation as composition of two line reflections. It presents some activities that support observation and intuitive cognition of isometries. Square ornaments were designed by composing mosaics, cutting folder paper, drawing, printing.
Klíčová slova:
teaching; geometry; isometry
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Representtion of basic isometries through square ornaments
The poster deals with basic isometries: point reflection, rotation and translation as composition of two line reflections. It presents some activities that support observation and intuitive cognition ...
Neumann problem for the Stokes system
Medková, Dagmar
2011 - anglický
the Neumann problem for the Stokes systems is studied by the boundary integral equation method. The successive approximation converges for bounded Lipschitz domains.
Klíčová slova:
Stokes system; Neumann problem; integral equation method
Plné texty jsou dostupné na vyžádání prostřednictvím repozitáře Akademie věd.
Neumann problem for the Stokes system
the Neumann problem for the Stokes systems is studied by the boundary integral equation method. The successive approximation converges for bounded Lipschitz domains.
Computational and analytical a posteriori error estimates for finite element methods
Segeth, Karel
2010 - anglický
The analytical a posteriori error estimates are oriented to the use in h-methods, are usually constructed only for lowest-order polynomial approximation, and often depend on unknown constatns or functions. In this review paper, we present several error estimation procedures for some particular linear partial differential problems with special regards to the needs of the hp-method. We compare the advantages and drawbacks of a posteriori error estimators including computational ones.
Klíčová slova:
hp-adaptive finite element method; a posteriori error estimator; computational error estimate; reference solution
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Computational and analytical a posteriori error estimates for finite element methods
The analytical a posteriori error estimates are oriented to the use in h-methods, are usually constructed only for lowest-order polynomial approximation, and often depend on unknown constatns or ...
Podnětná výuková prostředí pro přirozenou diferenciaci
Tichá, Marie
2010 - český
V příspěvku se zabýváme některými otázkami spojenými s vytvářením a vyhledáváním podnětných výukových prostředí a možnostmi, které pro zkvalitnění vzdělávání poskytují. je vymezen pojem "podnětné výukové prostředí". Jsou uvedeny ukázky možností, které poskytuje podnětné prostředí pro přirozenou diferenciaci, jako jednu z forem vnitřní diferenciace. In the contribution we will discuss several questions related to the creation and discovery of substantial learning environments and the potential they bear for general improvement of education. The concept of "substantial learning environment" will be characterized. We will also demonstrate what potential it has for natural differentiation as one of the forms of inner motivation.
Klíčová slova:
natural differentiation; teachers' professional competences; substantial learning environment
Plné texty jsou dostupné na vyžádání prostřednictvím repozitáře Akademie věd.
Podnětná výuková prostředí pro přirozenou diferenciaci
V příspěvku se zabýváme některými otázkami spojenými s vytvářením a vyhledáváním podnětných výukových prostředí a možnostmi, které pro zkvalitnění vzdělávání poskytují. je vymezen pojem "podnětné ...
Application of the BDDC method to the Stokes problem
Šístek, Jakub; Burda, P.; Mandel, J.; Novotný, J.; Sousedík, B.
2010 - anglický
Application of BDDC method to problems of Stokes flow is explored. BDDC is applied to several 3D problems and is shown to be a competitive method.
Klíčová slova:
BDDC; domain decomposition; iterative substructuring; Stokes flow
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Application of the BDDC method to the Stokes problem
Application of BDDC method to problems of Stokes flow is explored. BDDC is applied to several 3D problems and is shown to be a competitive method.
How joint reflection could contribute to develop teacher's professionalism
Macháčková, Jana
2010 - anglický
The paper deals with one of the ways, how to use joint reflection for preparing student-teachers. The contribution indicates possible procedure how to practice qualified pedagogical reflection to contribute to the enhancement teacher's professionalism.
Klíčová slova:
reflection; joint reflection; qualifield pedagogical reflection
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
How joint reflection could contribute to develop teacher's professionalism
The paper deals with one of the ways, how to use joint reflection for preparing student-teachers. The contribution indicates possible procedure how to practice qualified pedagogical reflection to ...
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