Sökning: "efficiency improvement"

Visar resultat 6 - 10 av 490 avhandlingar innehållade orden efficiency improvement.

  1. 6. Software Development Productivity : Evaluation and Improvement for Large Industrial Projects

    Författare :Piotr Tomaszewski; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; software development productivity; evaluation; improvement;

    Sammanfattning : Software development productivity can be improved by introducing improvements in many areas. In this thesis we investigate technology and process driven productivity improvements, i.e., productivity improvements that have sources in changes of technologies or in changes in development processes. LÄS MER

  3. 7. High efficiency power amplifiers for wireless communications

    Författare :Hossein Mashad Nemati; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; load modulation; GaN; supply modulation; LDMOS; efficiency; Power amplifier; MMIC; mHEMT; transmitter architecture;

    Sammanfattning : This thesis presents state-of-the-art high efficiencyharmonically-tuned power amplifiers (PAs) and investigates thecharacteristics and potentials of such amplifiers in two of the mostpromising efficiency enhancement techniques, dynamic supply and load modulation.In this work, a 10 W LDMOS harmonically-tuned PA with 80% power-added-efficiency (PAE) isrealized at 1 GHz. LÄS MER

  4. 8. Organizing for efficiency : Essays on merger policies, independence of authorities, and technology diffusion

    Författare :Anh Mai; Mats Bergman; Lars Hultkrantz; Ranjula Bali Swain; Lars Persson; Örebro universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; merger; regulation; reform; authority; corruption; broadband; diffusion; policy; industrial organization; accountability; Politics; Economy and the Organization of Society;

    Sammanfattning : Institutions are fundamentally sets of rules in a society that help create stability. Organizations are groups of people who may share the same goal. Changes in organizations and institutions will have large effects on the performance of economies. LÄS MER

  5. 9. Linearization of High Efficiency Transmitters for Wireless Communications

    Författare :Haiying Cao; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; dynamic load modulation; Behavioral model; digital predistortion; I Q imbalance; Volterra series; efficiency; power amplifier; transmitter;

    Sammanfattning : In recent years, reducing energy consumption in wirelesscommunication systems has gained prominence. In order to achieve this energy saving, high power efficiency is necessary for the wireless transmitters used. LÄS MER

  7. 10. Efficiency of the trackwork scheduling process in Sweden

    Författare :Daria Ivina; Trafik och väg; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Railways; Maintenance management; Trackwork scheduling; Project Uncertainties; Lean; Efficiency;

    Sammanfattning : Efficient scheduling is vital for railway maintenance, which is increasingly challenged by rising train traffic and infrastructure wear. Trackwork often necessitates the reduction of train speeds and the partial or complete closure of tracks. LÄS MER