Sökning: "karin due"

Visar resultat 1 - 5 av 319 avhandlingar innehållade orden karin due.

  1. 1. Fysik, lärande samtal och genus. : En studie av gymnasieelevers gruppdiskussioner i fysik

    Författare :Karin Due; Sylvia Benckert; Britt-Marie Berge; Svein Sjøberg; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; physics education; science education; gender; group discussions; upper secondary school; sociocultural theory; discourse analysis; images of physics; Fysikdidaktik; naturvetenskapernas didaktik; genus; gruppdiskussioner; gymnasieskolan; sociokulturell teori; diskursanalys; föreställningar om fysik; lärande; Subject didactics; Ämnesdidaktik;

    Sammanfattning : This thesis investigates how students in upper secondary school solve problems and discuss physics in small groups. The study examines how gender, knowledge in physics and the image of the subject physics are constructed in the students’ conversation and how these processes are related to each other. LÄS MER

  3. 2. Analysis of phosphorus retention variations in constructed wetlands receiving variable loads from arable land

    Författare :Karin Johannesson; Karin Tonderski; Charlotte Kjaergaard; Stefan Weisner; Linköpings universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : Seven wetlands, constructed on agricultural land in the south of Sweden, were investigated with respect to phosphorus (P) retention. The overall aim was to increase the understanding of P retention and find possible explanations for the variations in retention that have been observed in previous studies. LÄS MER

  4. 3. Persistent Digital Service Encounters : Challenges of organizational use of social media in a hotel chain

    Författare :Karin Högberg; Kerstin Grundén; Anna Karin Olsson; Maria Åkesson; Högskolan Väst; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Organizational social media; IT change; IT use; hospitality; digital service encounters; Informatik; Informatics; Work Integrated Learning; Arbetsintegrerat lärande;

    Sammanfattning : The emergence of social media has in many ways changed how individuals interact, communicate and also consume online. Due to the massive, world wide use of social media, organizations are starting to use social media in order to be present where their customers are. LÄS MER

  5. 4. On the Optimization of Schedules of a Multitask Production Cell

    Författare :Karin Thörnblad; Göteborgs universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; mathematical optimization; flexible job shop scheduling; mixed integer linear programming MILP ; complexity analysis; mathematical modelling; production planning; multi-purpose machine; dispatching rule; priority function; total flowtime; total tardiness; release date; due date; due date;

    Sammanfattning : Volvo Aero has invested in a complex production cell containing a set of multipurpose machines. The problem of finding optimal schedules for this multitask cell is a complex combinatorial optimization problem which is recognized as a flexible job shop problem. This thesis proposes an approach to find such schedules using mathematical optimization. LÄS MER

  7. 5. Effects on Machinability due to Microstructure Variations in Case Hardening Steel

    Författare :Karin Björkeborn; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machinability; Short-term test; Microstructure; Pearlite Nodular Size; Case Hardening Steel; Chip breakability.;

    Sammanfattning : Typical products made of case hardening steel are transmission parts like gear wheels, pinions and crown wheels. Case hardening produces a carbon-rich surface and provides the parts with both enhanced hardness and fatigue life. LÄS MER