Sökning: "subtraction"

Visar resultat 1 - 5 av 60 avhandlingar innehållade ordet subtraction.

  1. 1. Cognitive strategies in simple addition and subtraction : Process models based on analyses of response latencies and retrospective verbal reports

    Författare :Maj-Lene Hedenborg; Stellan Ohlsson; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; cognition; mental arithmetic; addition; subtraction; process models; response latencies; verbal reports; errors; psykologi; Psychology;

    Sammanfattning : The purpose of this thesis is to explore cognitive processes used by children and adults when solving simple arithmetic problems, and to develop process models for describing these processes. The studies in the thesis were based mainly on analyses of response latencies and retrospective verbal reports, separately and in combination. LÄS MER

  3. 2. Från design till meningsskapande : En multimodal studie om elevers arbete med matematikläroböcker i årskurs 1

    Författare :Malin Norberg; Lena Boström; Ola J Lindberg; Magnus Österholm; Astrid Pettersson; Mittuniversitetet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Mathematics textbooks; Students’ Meaning-making; Multimodality; Meaning potential; Agency; Year 1; Subtraction;

    Sammanfattning : This thesis examines students’ work with mathematics textbooks in Year 1 (students aged 7–8 years) of Swedish elementary school. The aim of this thesis was to contribute knowledge about and an understanding of how students make meaning in their work with mathematics textbooks. LÄS MER

  4. 3. Impartial Games and Recursive Functions

    Författare :Urban Larsson; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Algorithmically undecidable; Beatty sequences; Blocking maneuver; Cellular automaton; Comply maneuver; Complementary sequences; Dictionary process; Dual game; Game complexity; Game convergence; Game reflexivity; Heap game; Impartial game; Invariant subtraction game; Move-size dynamic; Nim; P-equivalence; Rule 110; Splitting sequences; *-operator; Subtraction game; Take-away game; Turing complete; Wythoff Nim; Turing complete;

    Sammanfattning : Interest in 2-player impartial games often concerns the famous theory of Sprague-Grundy. In this thesis we study other aspects, bridging some gaps between combinatorial number theory, computer science and combinatorial games. LÄS MER

  5. 4. Speech enhancement for mobile communications

    Författare :Harald Gustafsson; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Speech enhancement; Spectral subtraction; Dual-microphone spectral subtraction;

    Sammanfattning : .... LÄS MER

  7. 5. Development and improvement of methods for characterization of HPLC stationary phases

    Författare :Torgny Undin; Torgny Fornstedt; Jörgen Samuelsson; Anders Törncrona; Johan Ekeroth; Douglas Westerlund; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Adsorption isotherms; Elution by characteristic points; Inflection points; Single component adsorption; Elution by characteristic points method; Slope data; ECP-slope method; Adsorption; Adsorption energy distribution; Adsorption isotherms; AED; Characterization of adsorption processes; Chromatographic analysis; Chromatography; Hydrophobic-subtraction method HSM ; Hydrophobicity; Linear methods; Linear Models; Liquid chromatography; metoprolol; Non-linear methods; Nonlinear methods; phenol; priority journal; propranolol; Retention mechanism; reversed phase liquid chromatography; Solvation; Subtraction method; Thermodynamics; Chemistry with specialization in Surface Biotechnology; Kemi med inriktning mot ytbioteknik;

    Sammanfattning : High Performance Liquid Chromatography (HPLC) is a widely used tech-nique both for detecting and purifying substances in academy and in the industry. In order to facilitate the use of, and knowledge in HPLC, character-ization of stationary phases is of utmost importance. LÄS MER