Search for dissertations about: "Critical gap"

Showing result 1 - 5 of 234 swedish dissertations containing the words Critical gap.

  2. 1. Closing the Gap : How an Adaptive Behavioral Based Program on a Tablet Can Help Low Performing Children Catch Up in Math: a Randomized Placebo Controlled Study

    Author : Martin Hassler Hallstedt; Ata Ghaderi; Tomas Furmark; Nancy Jordan; Uppsala universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; intervention; mathematics; tablet; fluency; short and long-term effects; educational technology; Psychology; Psykologi;

    Abstract : Early mathematic skills have a substantial impact on later school achievement. Children with poor school achievement are at risk for adverse consequences later in life. Math competencies also have consequences for the economy at large because societies are becoming increasingly dependent on skill sets including mathematics. READ MORE

  4. 2. Topology off the beaten path : From critical to non-Hermitian systems

    Author : Carlos Ortega-Taberner; Maria Hermanns; Joost Slingerland; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Topological phases; Critical systems; Non-Hermitian systems; Theoretical Physics; teoretisk fysik;

    Abstract : A central topic in condensed matter research during the last decades has been the study and classification of topological phases of matter. Topological insulators in particular, a subset of symmetry protected topological phases, have been investigated for over a decade. READ MORE

  5. 3. Project work, independence and critical thinking

    Author : Anders Eklöf; Torgny Ottosson; Lars-Erik Nilsson; Per-Olof Erixon; Högskolan Kristianstad; Gothenburg University; Göteborgs universitet; []
    Keywords : SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; project work; independence; individualisation; critical thinking; frame analysis; risk; uncertainty; Risk-society; Goffman;

    Abstract : This thesis studies how students do projects in a Swedish upper secondaryschool. The students have to produce products and at the same time provethem self as independent in relation to the teachers, and negotiate therequirements of the project setting and the written instructions within thegroup. READ MORE

  6. 4. Gap Waveguide Technology- Electromagnetic Packaging and Transitions

    Author : Astrid Algaba Brazalez; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; rectangular waveguide; packaging; transition; coplanar waveguide; microstrip; millimeter waves; gap waveguide; perfect magnetic conductor;

    Abstract : The scarcity of available frequency bands for new wireless communication systems, as well as the growing need for higher capacity, motivates the current interest in moving upwards in frequency. The millimeter wave frequencyrange is very attractive to allocate potential commercial opportunities such as short range wireless communications that allow high-speed data/video transmission, and automotive radars for both driver assistance and increasedsafety. READ MORE

  7. 5. Gap waveguide for packaging microstrip filters & investigation of transitions from planar technologies to ridge gap waveguide

    Author : Astrid Algaba Brazalez; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; parallel plate mode; coupled line filter; microstrip circuit; packaging; Artificial magnetic conductor AMC ; perfect magnetic conductor PMC ; gap waveguide; transition.; coplanar waveguide CPW ;

    Abstract : Gap waveguide technology has proved to constitute an effective alternative for the design of microwave passive components, due to its advantages with respect to traditional planar technologies and standard waveguides. There is no requirement for conductive contact between the two different metal pieces making up a gap waveguide prototype, since one of these pieces makes use of a textured surface that eliminates any possible leakage of the field through the gap to the surface of the other metal piece above it. READ MORE