Sökning: "number concept"

Visar resultat 1 - 5 av 1070 avhandlingar innehållade orden number concept.

  1. 1. The zone concept : design of low-voltage installations considering the spread of high frequency harmonics

    Författare :Martin Lundmark; Magnus Olofsson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electric Power Engineering; Elkraftteknik; Energy Engineering; Energiteknik;

    Sammanfattning : The use of electric power has become a backbone of the modern society. Together with the growth in possible applications of electric power, we also see a growth in the number of devices and the interest of using electrical energy as an environmentally-friendly alternative to other sources of energy. LÄS MER

  3. 2. Service concept design

    Författare :Fred Persson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Datorstödd maskinkonstruktion; Computer Aided Design;

    Sammanfattning : Manufacturing companies are continuously experiencing tougher competition; to meet this challenge a trend is to offer functional products. A functional product is a total care offer consisting of capital intensive hardware integrated with its accompanying services needed to keep it operational. LÄS MER

  4. 3. Auf dem Weg zum Begriff der negativen Zahl : Empirische Studie zur Ordnungsrelation für ganze Zahlen aus inferentieller Perspektive

    Författare :Maike Schindler; Stephan Hußmann; Deutschland Dortmund Technische Universität; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Negative Numbers; Inferentialism; Individual Concepts; Concept Development; Order Relation; Mathematics; Matematik; Education; Pedagogik;

    Sammanfattning : Grundmuster von Begriffsbildungsprozessen von Schülerinnen und Schülern einer Beschreibung und Analyse zugänglich zu machen, ist ein höchst interessanter und relevanter Bereich der Mathematikdidaktik. Die Autorin widmet sich dieser Thematik, indem sie einen durch philosophische und psychologische Einflüsse geprägten Theorierahmen nutzt, um individuelle Begriffsbildungsprozesse in ihrem Wechselspiel mit Lernsituationen zu verstehen. LÄS MER

  5. 4. Social Rörelse : Begreppsbildningen kring ett mångtydigt fenomen

    Författare :Magnus Ring; Sociologi; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Sociology; Social Movement; Concept formation; Theories of social movement; Sociologi;

    Sammanfattning : This thesis develops the concept formation of 'social movement'. The author stresses the importance of the inherent classical understanding of the concept as defining a collective actor involved in a struggle regarding main social and cultural trends in society. The concept of social movement is treated as having been an unclear concept. LÄS MER

  7. 5. Making Sense of Negative Numbers

    Författare :Cecilia Kilhamn; Göteborgs universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; mathematics education; metaphor; signed number; negative number; number sense; case study; longitudinal; social constructivism;

    Sammanfattning : Numbers are abstract objects that we conceptualize and make sense of through metaphors. When negative numbers appear in school mathematics, some properties of number sense related to natural numbers become contradictory. The metaphors seem to break down, making a transition from intuitive to formal mathematics necessary. LÄS MER