3 868 uppsatser · sida 60 av 60
… a new time variant system has been created. This thesis project implements improvements in COMET to create a more stable database suitable for further development. A mechanism for dynamic reconfiguration of COMET is implemented, thus, enabling components and aspects to be …
… even though the tests of the specific algorithms chosen show there is room for improvements in quality. There is nothing that indicates that future work with this model would not produce better quality in its results.
Improved afterburner combustion stability for turbofan engine RM12 by modified engine control
The engine of JAS 39 Gripen, RM12, has recently been equipped with a new flameholder and a new engine inlet. This change has caused an increased noise level from the engine when the afterburner is in use. The noise level reaches its peak when the afterburner is partially used …
… control system and simulations show that this control system is a considerable improvement compared to the control system used today.
Evaluation of selenomethionine and nitro glycerine for possible use in boat paint to prevent barnacle fouling
… och kostsamt problem världen över. I Sverige orsakar havstulpanen, Balanus improvisius, den största påväxten. Havstulpanen har många förstadier innan den blir en vuxen havstulpan. I det stadiet innan den sätter sig fast på olika platser, kallas den cyprid. Det tar mellan tre …
… work. Since the UGV is to be used outdoor in urban areas, GPS can be used. To improve precision and robustness, inertial navigation is used in addition to GPS, since GPS reception is likely to be diminished in such areas. The sensors used for navigation are consequently GPS …
… compared to the former, as performance, particularly in urban areas, has been improved. The segmentation methods introduced have shown promising results in separating different types of objects. A new set of decision values and descriptors for the object based classifier has …
… uncertainty clear to the user. These changes are thought to significantly improve the existing model.
… decrease in the numbers of events during the last five years, which indicates improved dam safety within the mining industry. The analysis also shows that severe events and the human factor might be related when it comes to the initiating cause of the event. Further relations …
granskning och sammanställning
… for landfill. If no comprehensive legal provisions is produced guidance must improve. Treatment of leachate and self monitoring system at fifteen installations in Sweden has been studied and compared. A study of literature about different treatment solutions has also been …
… Because of this, the current systems for wastewater treatment may have to be improved. In order to evaluate new technologies for municipal wastewater treatment, a development project has been initiated for the new district Hammarby Sjöstad in Stockholm. The project is lead by …
avskiljning med mineraliska filtermaterial
… found for the leachate, but for some metals in the sodium solution a higher pH improved the removal of heavy metals. The two materials that showed best results in the batch experiment were the blast-furnace slag and the sand with iron oxides. These materials were used in the …
… part of the work of dam safety is FDU that is carried out with purposes of improving the work of dam safety. A FDU made for the Skålan dam in the River of Ljungan showed that the levels of the safety factors for sliding and overturning of the dam was not fulfilled when subjected …
… need to be handled and the phase noise performance of the oscillator must be improved, in order for the MEMS based reference oscillator to be a successful replacement for the quartz crystal reference oscillator.
… should be used. The aim with a silencer based on active noise control is to improve the reduction of the low frequency noise below 250 Hz. In this project we also have a passive component that reduce the higher frequencies. The active control system should make the system better …
