Sökning: "Ullmark Ullmark"

Visar resultat 1 - 5 av 10 avhandlingar innehållade orden Ullmark Ullmark.

  1. 1. Being private and public at home : an architectural perspective on video mediated communication in smart homes

    Författare :Stefan Junestrand; Ulf Keijer; Ullmark Ullmark; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Environmental engineering and architecture; architecture; broadband; design; design theory; digital; Samhällsbyggnadsteknik och arkitektur; Civil engineering and architecture; Samhällsbyggnadsteknik och arkitektur;

    Sammanfattning : Video mediated communication (VMC) is a two way real time audio and video communication between remote places. VMC has the potential to be applied favourably to many activities, services and functions in smart homes. LÄS MER

  3. 2. Morcelised Impacted Cortico-Cancellous Bone Allografts in Revision Surgery for Endoprosthetic Loosening with Osteolysis

    Författare :Gösta Ullmark; Johan Kärrholm; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Surgery; Total hip arthroplasty; total knee arthroplasty; graft impaction; revision; histology; biomechanic; cement; positron emission tomography; Kirurgi; Surgery; Kirurgi; Surgery; kirurgi;

    Sammanfattning : Revision total hip arthroplasty (RTHA) and filling of the bone defects with impacted particulated bone allograft is the concept that has been studied in this thesis. In three in vitro models, biomechanical aspects of morcelised and impacted bone allografts were studied. LÄS MER

  4. 3. Optimization modeling of frequency reserves and inertia in the transition to a climate-neutral electricity system

    Författare :Jonathan Ullmark; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; generation expansion planning; frequency reserves; inertia; Energy system modeling; synthetic inertia; frequency control;

    Sammanfattning : The ongoing transition towards electricity production systems that are dominated by wind and solar power challenge both the traditional strategy for meeting a varying electricity demand and the traditional way of controlling the AC frequency of the electricity grid. This work investigates how frequency reserves (FR) and inertia, as well as inter-hourly variation management interact in the transition to a climate-neutral electricity system. LÄS MER

  5. 4. Short- and long-term variability in future electricity systems – Ensuring the flexibility to manage the grid frequency and inter-annual variations

    Författare :Jonathan Ullmark; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; inter-annual variability; flexibility; frequency control; battery storage; Electricity systems modelling; capacity expansion planning;

    Sammanfattning : To achieve climate mitigation targets, the net climate impact from electricity generation must be drastically reduced in the near future, and eventually eliminated. The level of generation must also be increased to accommodate the increasing demand as the transport and industry sectors undergo electrification. LÄS MER

  7. 5. Prolepsis plantarum, quam, consens. nobil. nec non exper. ord. med. in illustr. ad Salam. Svion. Athenæo, præside ... Carolo Linnæo ... publico examini submittit Hinricus Ullmark, Vermelandus. In audit. Car. maj. die XXII. Decembris anni MDCCLX. H. A. M. S

    Författare :Carl von Linné; Henrik Ullmark; Carl von Linné; Uppsala universitet; []
    Nyckelord :Plants; Plants; Växter; Växtmorfologi;

    Sammanfattning : .... LÄS MER