Sökning: "Efficiency"
Visar resultat 21 - 25 av 5936 avhandlingar innehållade ordet Efficiency.
21. Linearization of High Efficiency Transmitters for Wireless Communications
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
22. High-efficiency Power Amplification Techniques for Wireless Transmitters
Sammanfattning : The low efficiency of existing power amplifiers (PAs) is causing excessive energy consumption in wireless systems. Improving the PA efficiency is therefore of great environmental and economical importance. LÄS MER
23. Running-in of gears - surface and efficiency transformation
Sammanfattning : With ever shorter development times and market demands on overall system performance such as efficiency, reliability and low maintenance, accurate predictive tools are necessary and gear drives prove to be no exception. All these characteristics have an impact on a process which has remained a riddle: running-in. LÄS MER
24. Efficiency of the trackwork scheduling process in Sweden
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
25. An experimental investigation of spur gear efficiency and temperature : A comparison between ground and superfinished surfaces
Sammanfattning : This thesis focuses on reliability when testing gear efficiency and on how gear mesh efficiency can be increased without detrimental effects on the gears. Test equipment commonly used in gear research was analysed to identify important parameters for gear efficiency testing. LÄS MER