Avancerad sökning

Hittade 5 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. An experimental and numerical investigation of a Kaplan turbine model

    Författare :Berhanu Mulu; Sebastian Muntean; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strömningslära; Fluid Mechanics;

    Sammanfattning : Hydropower is a renewable, reliable and highly efficient source of energy. Hydropower has the ability to run as a base load and to adjust load rapidly. This makes hydropower suitable for coupling with other renewable energy sources to stabilize frequency fluctuations. LÄS MER

  3. 2. Experimental and numerical investigation of axial turbine models

    Författare :Berhanu Mulu; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strömningslära; Fluid Mechanics;

    Sammanfattning : Hydropower is a versatile renewable source of power generation able to change rapidly operating conditions. Hydropower plants may today work over a larger operating range than designed for due to the introduction of renewable sources of energy and the deregulation of the electricity market. LÄS MER

  4. 3. Laser Based Flow Measurements to Evaluate Hydraulic Conditions for Migrating Fish and Benthic Fauna

    Författare :S M Sayeed Bin Asad; Staffan Lundström; J. Gunnar I. Hellström; Anders G. Andersson; Berhanu Mulu Geberkiden; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fish Migration; Step Cylinder; Shedding; Vortex Street; Shear stress; PIV; benthic fauna; river; stones; Strömningslära; Fluid Mechanics;

    Sammanfattning : Hydropower is one of the main sources for Sweden’s energy, which is clean and renewable. It is a clean energy source because no fuels are burned which does not pollute the air and it is a renewable energy source as it only uses natural water cycle for generating energy. LÄS MER

  5. 4. Det motsägelsefulla bedömningsuppdraget : En etnografisk studie om bedömning i förskolekontext

    Författare :Eva M. Johansson; Girma Berhanu; Helena Korp; Ingegerd Tallberg-Broman; Högskolan Väst; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Preschool; assessment; state control; documentality; cultural and social reproduction; invisible pedagogy; habitus; ethnography; Barn- och ungdomsvetenskap; Child and Youth studies; Utbildningsvetenskap; Educational science; preschool; assessment; state control; documentality; cultural and social reproduction; invisible pedagogy; habitus; ethnography;

    Sammanfattning : This study examines the assessment practices and discourses in Swedish preschool in times of changing principles for state control and steering. These practices and discourses are analyzed in relation to theories about state control, and about cultural and social reproduction in education. LÄS MER

  7. 5. Lärares relationskompetens i möte med elever med ADHD

    Författare :Linda Plantin Ewe; Jonas Aspelin; Sven Bölte; Girma Berhanu; Malmö universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; ADHD; neurodevelopmental disorders; RCM-model; Scheff; social bond; teachers’ relational competence; teacher-student relationship;

    Sammanfattning : Purpose: The purpose of this study is to contribute to knowledge of teachers’ relational competence with respect to students with ADHD. In addition, a specific focus is investigating whether teachers’ understanding of relational competence, regarding the targeted student group, can be developed using video-based interventions. LÄS MER