Sökning: "geometry understanding"

Visar resultat 1 - 5 av 338 avhandlingar innehållade orden geometry understanding.

1. 1. Geometry linking the art of building and the Universe: Geometric patterns on shells and grid shells

   Författare :Emil Adiels; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; NATURVETENSKAP; NATURAL SCIENCES; Form finding; Differential Geometry; Conceptual design; Geometry; Shell; Engineering; Masonry; Craftsmanship; Grid shell; Architecture; Structural design;

   Sammanfattning : Geometry links the art of building and the physics of space-time. Mathematical breakthroughs in geometry have led to new ways of designing our structures and our ability to visualise and describe the world, phenomena in nature and the universe. LÄS MER

3. 2. Theoretical and computational advances in small-angle x-ray scattering tensor tomography

   Författare :Leonard Nielsen; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; tensor tomography; reciprocal space map; small-angle scattering;

   Sammanfattning : The relationships between microscopic and macroscopic structures is a central topic of materials physics. Small-angle x-ray scattering (SAXS) is a powerful experimental technique for probing and mapping variations in electron density, given by the reciprocal space map, down to the nanometer scale in two dimensions. LÄS MER

4. 3. Tautological rings of Shimura varieties

   Författare :Simon Cooper; Wushi Goldring; Torsten Wedhorn; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Shimura varieties; Chow rings; automorphic vector bundles; matematik; Mathematics;

   Sammanfattning : This licentiate thesis consists of two papers. In paper I the tautological ring of a Hilbert modular variety at an unramified prime is computed. The method of van der Geer in the case of A_{g} is extended to deal with the case of the Hilbert modular variety, which is more complicated. LÄS MER

5. 4. Prestress and its application to shell, fabric, and cable net structures

   Författare :Alexander Sehlström; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HUMANIORA; HUMANITIES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Geometric stiffness; Form finding; Conceptual design; Stress pattern; Engineering; Prestress; Architecture; Structuraldesign;

   Sammanfattning : Prestressing and shells provide means to create material-efficient and well-functioning structures, as do their combination, offering opportunities for increased material efficiency within the built environment. Prestressing introduces stresses in an object to enhance its performance, and shells include concrete shells, masonry vaults, fabric structures, cable nets, and timber or steel gridshells. LÄS MER

7. 5. Möjligheter till lärande i matematik : Lärares problemformuleringar och dynamisk programvara

   Författare :Lil Engström; Thomas Lingefjärd; Per-Olof Wickman; Ole Björkqvist; Stockholms universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Cabri Geometry; dynamic geometry software; mathematics teaching; teachers problem posing; Matematikdidaktik; dynamisk programvara; problemformulering; undervisning; Education; Pedagogik;

   Sammanfattning : This thesis presents the first Swedish empirical evidence on how teachers employ a dynamic mathematical software when teaching mathematics in upper secondary school. The study examines: a) How teachers formulate mathematical problems? b) How they use the experience the students have gained? and c) What use they make of the software’s potential? These questions are examined through classroom observations followed up by discussions with the teachers. LÄS MER