Sökning: "design-based research"

Visar resultat 11 - 15 av 98 avhandlingar innehållade orden design-based research.

  1. 11. Low Phase Noise GaN HEMT Oscillator Design based on High-Q resonators

    Författare :Mikael Hörberg; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; resonator coupling; reflection oscillator; MMIC; phase noise; cavity resonator; low-frequency noise; GaN HEMT; MEMS;

    Sammanfattning : The thesis considers the design and optimization of oscillators targeting low phase noise, given boundary conditions from the technology. Crucial technology figures are power capability, RF noise figure, low-frequency noise and the quality factor (Q-factor) of the resonator. LÄS MER

  3. 12. Grouting of Fractured Rock with Silica Sol; Grouting design based on penetration length

    Författare :Johan Funehag; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Grouting; hydraulic test; sand column; propagation; penetration length; pipe flow; aperture; transmissivity; colloidal silica; silica sol; rheology; gelling liquids; field study;

    Sammanfattning : ABSTRACTRecent grouting projects in Sweden have concentrated on the grout itself. The only grout normally used in Sweden is cement-based. During the past 10 years, the acceptable flow of water into tunnels has been reduced significantly. The current requirements mean that an average fracture aperture of around 0. LÄS MER

  4. 13. Taming the Erratic : Representation and materialization in post-digital architectural design

    Författare :Daniel Norell; Timothy Anstey; Ulrika Karlsson; Fredrik Nilsson; Claus Peder Pedersen; KTH; []
    Nyckelord :HUMANIORA; HUMANITIES; Representation; Materialization; Post-digital; Material simulation; Chunk; Arkitektur; Architecture;

    Sammanfattning : This thesis investigates materialization and representation in contemporary architectural design practice. Due to cultural and technological shifts, the act of design is no longer squarely located in the abstract realms of drawings or digital geometries. LÄS MER

  5. 14. Playing and Learning Across Locations: : Indentifying Factors for the Design of Collaborative Mobile Learning

    Författare :Daniel Spikol; Marcelo Milrad; Jakob Tholander; Växjö universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Computer Supported Collaborative Learning; Mobile; Location-based services; Pervasive computing; Ubiquitous computing; Design-based research; Co-Design; Education; Games; Computer science; Datavetenskap; Other information technology; Övrig informationsteknik; Media Technology; Media Technology;

    Sammanfattning : The research presented in this thesis investigates the design challenges associated with the development and use of mobile applications and tools for supporting collaboration in educational activities. These technologies provide new opportunities to promote and enhance collaboration by engaging learners in a variety of activities across different places and contexts. LÄS MER

  7. 15. Designing Online Courses for Individual and Collaborative Learning : A study of a virtual learning environment based in Sri Lanka

    Författare :Thushani Weerasinghe; Robert Ramberg; Brian Hudson; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Design-Based Research; Design Experiments; Online Learning; Instructional Design; Design Principles; Design Guidelines; Individual Learning; Collaborative Learning; Inquiry-Based Learning; Peer-Teaching; Computer and Systems Sciences; data- och systemvetenskap;

    Sammanfattning : Online courses of distance learning programmes at universities are designed considering the characteristics and needs of their adult learners. Basically, there are two types of learners in an online course: individual learners and collaborative learners. LÄS MER