Sökning: "test standard"

Visar resultat 11 - 15 av 725 avhandlingar innehållade orden test standard.

  1. 11. Contactless Test of Circuit Boards

    Författare :Abdelghani Renbi; Heli Jantunen; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industriell elektronik; Industrial Electronics;

    Sammanfattning : Electronics are still continuing to respond to the small-feature size requirement for economical, performance and environmental benefits.Due to the non-idealities in the manufacturing process of circuit boards, electronics production yield is never 100 %. LÄS MER

  3. 12. Geochemical and mineralogical laboratory methods in waste rock drainage quality prediction

    Författare :Teemu Karlsson; Lena Alakangas; Päivi Kauppila; Andrew Barnes; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Extractive waste characterisation; drainage water; ARD; NRD; ABA test; NAG test; SEM; Applied Geochemistry; Tillämpad geokemi;

    Sammanfattning : Harmful substances containing acid or neutral rock drainages (ARD and NRD) are a major challenge related to the management of extractive industry wastes. This issue is particularly related to deposits containing sulphide minerals, which are prone to oxidization under the influence of atmospheric oxygen and water. LÄS MER

  4. 13. Dimensions of validity : studies of the Swedish national tests in mathematics

    Författare :Anna Lind Pantzare; Christina Wikström; Per-Erik Lyrén; Gordon Stobart; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; national tests; validity; interrater reliability; standard setting; linking; subscores; test development; didactics of educational measurement; beteendevetenskapliga mätningar;

    Sammanfattning : The main purpose for the Swedish national tests was from the beginning to provide exemplary assessments in a subject and support teachers when interpreting the syllabus. Today, their main purpose is to provide an important basis for teachers when grading their students. LÄS MER

  5. 14. Drum sound from floor coverings - objective and subjective assessment

    Författare :Ann-Charlotte Johansson; Teknisk akustik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; vakuumteknik; vibrationer; akustik; hydraulik; Maskinteknik; vacuum technology; vibration and acoustic engineering; hydraulics; acoustic standard; Mechanical engineering; tapping machine; veneer flooring; parquet flooring; binaural recording; foot impact; loudness; sound quality; listening test; paired comparisons; walking sound; drum sound; building acoustics; psychoacoustics; laminate flooring;

    Sammanfattning : Drum sound is the sound produced when an object, such as a foot, hits the flooring in the room in which the receiving ear is located. Drum sound has attracted interest in recent years, particularly due to an increased use of thin floating floor constructions, such as veneer or laminate flooring, which can produce loud and sharp walking sound. LÄS MER

  7. 15. Mechanisms of Blister Formation on Concrete Bridge Decks with Waterprooving Asphalt Pavement Systems

    Författare :Biruk Wobeshet Hailesilassie; Björn Birgisson; Lars-Olof Nilsson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; blister growth; PBM waterproofing membrane; orthotropic material; biaxial test; peeling test; elliptical blister growth;

    Sammanfattning : Bridge decks are commonly subjected to harsh environmental conditions that often lead to serious corrosion problems triggered by blisters under the hot mix asphalt bridge deck surfacing and secretly evolving during weather exposure until damage is often detected too late. Blisters may form under both the waterproofing dense mastic asphalt layer or under the waterproofing membrane which is often applied as additional water protection under the mastic asphalt (MA). LÄS MER