Sökning: "Pérez"

Visar resultat 11 - 15 av 99 avhandlingar innehållade ordet Pérez.

  1. 11. Seamless Integration of Battery-Free Communications in Commodity Wireless Networks

    Författare :Carlos Pérez-Penichet; Thiemo Voigt; Frederik Hermans; James Gross; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Backscatter communications; battery-free communications; battery-less devices; RFID; backscatter;

    Sammanfattning : Ubiquitous sensing applications have countless potential benefits to society. However, batteries have long been an obstacle to their full development. Harvesting energy from the environment is a promising alternative to battery power, but traditional radio transceivers consume too much for most harvesters. LÄS MER

  3. 12. Skola och erfarenhet: elevernas perspektiv : En grupp elevers skolerfarenheter i ett longitudinellt perspektiv

    Författare :Héctor Pérez Prieto; Karlstads universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Pedagogik; Pedagogy; Education; Pedagogik; Education;

    Sammanfattning : .... LÄS MER

  4. 13. Transient response of low voltage power installations to natural and simulated lightning electromagnetic fields

    Författare :Hugo Pérez Rebolledo; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : .... LÄS MER

  5. 14. Millennium Development Goals in Nicaragua : Analysing progress, social inequalities, and community actions

    Författare :Wilton Pérez; Carina Källestål; Ilona Koupil; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Millennium Development Goals; child survival; poverty; inequality; interventions; spatial model; Nicaragua;

    Sammanfattning : The world has made important efforts to meet the Millennium Development Goals (MDG) by 2015. However, it is still insufficient and inequalities prevail in the poorest settings. LÄS MER

  7. 15. Modelling and numerical analysis of leakage through metal-to-metal seals

    Författare :Francesc Pérez Ràfols; Vladislav Yastrebov; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements;

    Sammanfattning : Metal-to-metal seals are critical components as their failure can lead to leakage of hazardous fluids to the environment or to fatal failure of the systems they operate on. Most systems are subjected to increasingly more demanding conditions and deeper knowledge about how different parameters affect the leakage is necessary to design seals with the desired performance. LÄS MER