Sökning: "3-D structures"

Visar resultat 1 - 5 av 41 avhandlingar innehållade orden 3-D structures.

  1. 1. System Interconnection Design Trade-offs in Three-Dimensional (3-D) Integrated Circuits

    Författare :Roshan Weerasekera; Hannu Tenhunen; Li-Rong Zheng; Atila Alvandpour; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Interconnects; Parasitic Extraction; Repeaters; Signal Integrity; System-on-Chip SoP ; System-in-Package SiP ; System-on-Package SoP ; Three-dimensional 3-D Integration; Through-Silicon-Via TSV ; Vertical Integration; Information technology; Informationsteknik;

    Sammanfattning : Continued technology scaling together with the integration of disparate technologies in a single chip means that device performance continues to outstrip interconnect and packaging capabilities, and hence there exist many difficult engineering challenges, most notably in power management, noise isolation, and intra and inter-chip communication. Significant research effort spanning many decades has been expended on traditional VLSI integration technologies, encompassing process, circuit and architectural issues to tackle these problems. LÄS MER

  3. 2. 3-D rate dependent micromechanical model for polymer composites

    Författare :Vivekendra Singh; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; continuum damage; viscoelasticity; angle-ply laminates.; carbon epoxy composites; finite element; cohesive surface; viscoplasticity;

    Sammanfattning : Fibre reinforced polymeric composites are in high demand in automotive and aviation industries to improve fuel efficiency. However, the dynamic behaviour of composites is not very well understood. LÄS MER

  4. 3. Optimal Reduction of Structural Vibrations Using Genetic Algorithms

    Författare :Hamid Movaffaghi; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Earthquake excitation; Viscoelastic dampers; 3-D structures; Finite; Optimisation; Vibration reduction; Genetic Algorithm; element;

    Sammanfattning : .... LÄS MER

  5. 4. Modular long-span timber structures : a systematic framework for buildable construction

    Författare :Anders Björnfot; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Träbyggnad; Timber Structures;

    Sammanfattning : One of the identified reasons for the low amount of timber construction in Sweden is a general lack of knowledge about timber engineering and how timber can be used to its full advantage. One way for increased timber construction is the development of a cost-efficient and easy to comprehend building system. LÄS MER

  7. 5. Enumeration on words, complexes and polytopes

    Författare :Ragnar Freij; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Simplicial complex; discrete Morse theory; Hansen polytope; $3^d$-conjecture; split graph; derangement; pattern containment; pattern packing; composition.; composition.;

    Sammanfattning : This thesis presents four papers, studying enumerative problems on combinatorial structures. The first paper studies Forman's discrete Morse theory in the case where a group acts on the underlying complex. LÄS MER