Sökning: "Algebraic number"

Visar resultat 21 - 25 av 109 avhandlingar innehållade orden Algebraic number.

1. 21. Explicit algebraic turbulence modelling in buoyancy-affected shear flows

   Författare :Werner Lazeroms; Arne Johansson; Antti Hellsten; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : Turbulent flows affected by buoyancy forces occur in a large amount of applica-tions, from heat transfer in industrial settings to the effects of stratification inEarth’s atmosphere. The two-way coupling between the Reynolds stresses andthe turbulent heat flux present in these flows poses a challenge in the searchfor an appropriate turbulence model. LÄS MER

3. 22. Automated Derivation of Random Generators for Algebraic Data Types

   Författare :Claudio Agustin Mista; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Random Testing; Penetration Testing; Meta-programming; Haskell;

   Sammanfattning : Many testing techniques such as generational fuzzing or random property-based testing require the existence of some sort of random generation process for the values used as test inputs. Implementing such generators is usually a task left to end-users, who do their best to come up with somewhat sensible implementations after several iterations of trial and error. LÄS MER

4. 23. Progression of algebraic discourse in school years 2 to 8

   Författare :Maria Kenneman; Ewa Bergqvist; Magnus Österholm; Umeå universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; mathematics education; commognition; language; communication; compulsory school; textbook; pedagogiskt arbete; educational work;

   Sammanfattning : In contemporary educational settings algebra is considered to be of vital importance for student's continuation to more advanced studies in mathematics, thereby affecting their chances for future education and employment. However, a substantial number of students do not benefit from the algebra presently taught in schools and fail to use algebraic reasoning. LÄS MER

5. 24. Compactifying locally Cohen-Macaulay projective curves

   Författare :Morten Hønsen; Dan Laksov; Kristian Ranestad; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cohen-Macaulay compactification; curves; algebraic space; Algebra and geometry; Algebra och geometri;

   Sammanfattning : We define a moduli functor parametrizing finite maps from a projective (locally) Cohen-Macaulay curve to a fixed projective space. The definition of the functor includes a number of technical conditions, but the most important is that the map is almost everywhere an isomorphism onto its image. LÄS MER

7. 25. Stability analysis and transition prediction of wall-bounded flows

   Författare :Ori Levin; KTH; []
   Nyckelord :Boundary layer; wall jet; algebraic growth; exponential growth; lift-up effect; streamwise streaks; Tollmien-Schlichting waves; free-stream turbulence; roughness element; transition prediction; Parabolized Stability Equations; Direct Numerical S;

   Sammanfattning : Disturbances introduced in wall-bounded .ows can grow andlead to transition from laminar to turbulent .ow. In order toreduce losses or enhance mixing in energy systems, afundamental understanding of the . LÄS MER