Sökning: "Exakta"

Visar resultat 21 - 25 av 532 uppsatser innehållade ordet Exakta.

  1. 21. The carbon footprint caused by the oversizing of building service systems : A case study of an NHS Hospital

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Maria Hein; [2020]
    Nyckelord :Design; dimensioning; heating; cooling; boiler; chiller; pump; energy performance; environmental impact; mitigation strategy;

    Sammanfattning : Energy usage in buildings is a main contributor to CO2 emissions and in order for the EU to reach the 2050 goal of carbon-neutrality, there is a great need to improve the energy efficiency in buildings, particularly commercial buildings that often are substantially overdesigned. Excess margins in the design process of building services result in an oversizing of these systems which has great environmental impacts, divided up as the operational and embodied carbon footprints. LÄS MER

  2. 22. Energioptimering av mobila applikationer : En studie av potential i dynamiskt växlande färgscheman för OLED-skärmar

    Kandidat-uppsats, Mittuniversitetet/Institutionen för data- och systemvetenskap

    Författare :Andreas Lind; [2020]
    Nyckelord :Android; mobile applications; energy saving; OLED; Samsung; Galaxy; Android; mobila applikationer; energibesparing; OLED; Samsung; Galaxy;

    Sammanfattning : På de flesta av de mobiltelefoner som idag tillverkas så sitter det någon form av OLEDskärm. Dessa har till skillnad från LCD-skärmar en egenskap som gör att dess energiförbrukning påverkas markant beroende på vilka färger skärmen visar, där ljusa färger medför en högre energiförbrukning jämfört med när mörkare färger visas. LÄS MER

  3. 23. Evaluated density estimates of young forest stands using high resolution 2D imagery from UAV

    Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Forest Resource Management

    Författare :Victor Kingstad; [2020]
    Nyckelord :UAV; forestry; inventory; survey; cleaning; tending; PCT; pre com-mercial thinning;

    Sammanfattning : After more than three decades of advanced technology and methods to evaluate young forest attributes, the forestry still prefers laborious field surveys in regenera-tion forests. Preceding studies have virtually all successfully identified the saplings, but the cost has outweighed the benefits or at least not yet convinced the companies to step away from the traditional field surveys; high-resolution photogrammetric point clouds and ALS-data can provide accurate estimations of the biophysical prop-erties but requires intense data processing. LÄS MER

  4. 24. Aqua Ammonia as Secondary Fluid in Ice Rink Applications

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Brianna Kilberg; [2020]
    Nyckelord :Ice rink; secondary fluid; aqua ammonia; ammonia water; thermophysical properties; corrosion; pressure drop; pumping power; refrigeration;

    Sammanfattning : Refrigerant management is crucial in the attempts to slow climate change. Emissions from the refrigeration sector are primarily due to poor management and unsafe destruction of refrigerants currently in circulation. Safe refrigerant management and improving system operating efficiency can result in a reduction of emissions. LÄS MER

  5. 25. Exploring the Potential of Twitter Data and Natural Language Processing Techniques to Understand the Usage of Parks in Stockholm

    Kandidat-uppsats, KTH/Geoinformatik

    Författare :Theodor Norsten; [2020]
    Nyckelord :Natural Language Processing; Sentiment analysis; Topic modeling; Twitter; VADER; LDA;

    Sammanfattning : Traditional methods used to investigate the usage of parks consists of questionnaire which is both a very time- and- resource consuming method. Today more than four billion people daily use some form of social media platform. LÄS MER