Sökning: "weak classes"

Visar resultat 1 - 5 av 39 avhandlingar innehållade orden weak classes.

1. 1. Rätt elev i rätt klass : Skola, begåvning och styrning 1910–1950

   Författare :Thom Axelsson; Bengt Sandin; Anne-Li Lindgren; Ingemar Nilsson; Linköpings universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; school; democracy; upbringing; categorising; professional; differentiating; talent; intelligence tests; remedial classes; weak classes; extra classes; B-class; talent class; elite class; skola; demokrati; fostran; kategorisering; professionella; differentiering; begåvning; intelligensmätningar; hjälpklass; svagklass; extraklass; B-klass; begåvningsklass; elitklassklass; Children; Barn;

   Sammanfattning : I centrum för den här avhandlingen står det tidiga 1900-talets diskussion om skola, begåvning och social organisering. Tidsperioden som omfattas är 1910– 1950. Det är skolan i de större städerna Stockholm, Göteborg och Malmö som har stått i fokus. LÄS MER

3. 2. Destackification and Motivic Classes of Stacks

   Författare :Daniel Bergh; David Rydh; Dan Edidin; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Algebraic geometry; Algebraic stacks; Destackification; Grothendieck ring; Motive; Torus; Classifying stack; Mathematics; matematik;

   Sammanfattning : This thesis consists of three articles treating topics in the theory of algebraic stacks. The first two papers deal with motivic invariants. In the first, we show that the class of the classifying stack BPGLn is the inverse of the class of PGLn in the Grothendieck ring of stacks for n ≤ 3. LÄS MER

4. 3. High order summation-by-parts methods in time and space

   Författare :Tomas Lundquist; Jan Nordström; Peter Eliasson; David A. Kopriva; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; summation-by-parts; time integration; stiff problems; weak initial conditions; high order methods; simultaneous-approximation-term; finite difference; discontinuous Galerkin; spectral methods; conservation; energy stability; complex geometries; non-conforming grid interfaces; interpolation;

   Sammanfattning : This thesis develops the methodology for solving initial boundary value problems with the use of summation-by-parts discretizations. The combination of high orders of accuracy and a systematic approach to construct provably stable boundary and interface procedures makes this methodology especially suitable for scientific computations with high demands on efficiency and robustness. LÄS MER

5. 4. Essays on schooling, gender, and parental leave

   Författare :Elly-Ann Johansson; Peter Fredriksson; Per Johansson; Nabanita Datta Gupta; Uppsala universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; schooling; gender; parental leave; mixed-age classes; child care; preschools; Economics; Nationalekonomi; nationalekonomi; Economics;

   Sammanfattning : This thesis consists of four self-contained essays.   Essay 1: Mixed-aged classes (MA-classes) are a common phenomenon around the world. In Sweden, these types of classes increased rapidly during the 1980:s and 1990:s, despite the fact that existing empirical support for MA-classes is weak. LÄS MER

7. 5. Admissible transformations and the group classification of Schrödinger equations

   Författare :Celestin Kurujyibwami; Peter Basarab-Horwath; Roman Popovych; Pontelis Damianou; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : We study admissible transformations and solve group classification problems for various classes of linear and nonlinear Schrödinger equations with an arbitrary number n of space variables.The aim of the thesis is twofold. LÄS MER