Search for dissertations about: "three level"

Showing result 1 - 5 of 3561 swedish dissertations containing the words three level.

  1. 1. Grid Connected Three-Level Converters : Studies for Wave Energy Conversion

    Author : Remya Krishna; Mats Leijon; Karin Thorburn; Uppsala universitet; []
    Keywords : Wave energy; power converters; control strategies; grid connection; Teknisk fysik med inriktning mot elektronik; Engineering Science with specialization in Electronics;

    Abstract : This thesis presents an electrical system analysis of a wave energy converter (WEC) for the objective of grid connection. To transfer the enormous amount of power from waves to the load centers, efficient power electronic systems are essential. READ MORE

  2. 2. High-Level Synthesis for SiLago : Advances in Optimization of High-Level Synthesis Tool and Neural Network Algorithms

    Author : Yu Yang; Ahmed Hemani; Zhonghai Lu; Madhura Purnaprajna; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electronic Design Automation EDA ; Computer Aided Design CAD ; Algorithm-level Synthesis; SiLago; Optimization Techniques; Neural Network; Informations- och kommunikationsteknik; Information and Communication Technology;

    Abstract : Embedded hardware designs and their automation improve energy and engineering efficiency. However, these two goals are often contradictory. The attempts to improve energy efficiency often come at the cost of engineering efficiency and vice-versa. High-level synthesis (HLS) is a good example of this challenge. READ MORE

  3. 3. Career outcomes in the Swedish labor market : three contextual studies

    Author : Magnus Bygren; David Grusky; Stockholms universitet; []
    Keywords : SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Career development; Labour market; Sweden; Karriär; Arbetsmarknad; Sverige; 1990-talet;

    Abstract : Paper I:Being Different in the Workplace: Job Mobility into other Workplaces and Shifts into Unemployment. This study evaluates contradictory theoretical predictions about the consequences of belonging to a minority in a workplace context. READ MORE

  4. 4. Learning Chemistry at the University level : Student attitudes, motivation, and design of the learning environment

    Author : C. Anders R. Berg; Johan Lithner; Lisbeth Lundahl; Helge Strömdahl; Umeå universitet; []
    Keywords : laboratory work; open experiments; attitude; university level; motivation; cognitive load; laboratory instruction styles; attitude change; design of learning situation; student questions.;

    Abstract : The main purpose of the research this thesis is based upon was to study students’ attitudes towards learning chemistry at university level and their motivation from three perspectives. How can students’ attitudes towards learning chemistry be assessed? How can these attitudes be changed? How are learning situations experienced by students with different attitude positions? An attitude questionnaire, assessing views of knowledge, learning assessments, laboratory activities, and perceived roles of instructors and student, was used to estimate students’ attitude positions. READ MORE

  5. 5. Monolith Reactors in Three-Phase Processes

    Author : Rolf Edvinsson; Chalmers University of Technology; []
    Keywords : desulfurization; methanol synthesis; acetylene hydrogenation; Taylor flow; monolith reactor; three-phase; computational fluid dynamics;

    Abstract : The use of monoliths in chemical processes has been studied with the emphasis on liquid-phase hydrogenations. A monolithic catalyst consists of many narrow, parallel channels with catalytically active species either incorporated into the wall itself or into a layer of a porous oxide deposited on the wall (a washcoat). READ MORE