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Data-parallel computation in parallel and distributed environments
Acta Universitatis LappeenrantaensisURN:ISSN:1456-4491 (2002)The past few decades have seen a considerable increase in the number of parallel and distributed systems. With the development of more complex applications, the need for more powerful systems has emerged and various parallel ... -
Database Rights in Safe European Home: The Path to More Rigorous Protection of Information
Acta Universitatis LappeenrantaensisURN:ISSN:1456-4491 (2005)1. Introduction "The one that has compiled ... a database, the collection, securing the validity or presentation of which has required an essential investment, has the sole right to control the content over the whole work ... -
Decoupling protein production from agricultural land use
Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 03.12.2021)Global food production faces significant challenges owing to the growing population and limited resources including land and freshwater. Animal protein production consumes a major proportion of globally produced food ... -
Deep Bayesian approach to eye fundus image segmentation
Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 09.12.2021)Eye diseases cause different retinal abnormalities that can be detected and diagnosed by examining eye fundus images. Due to the rapidly growing amount of data, there is a need for methods that are able to produce meaningful ... -
Defining the keyhole modes – the effects on the weld geometry and the molten pool behaviour in high power laser welding of stainless steels
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 17.12.2014)Keyhole welding, meaning that the laser beam forms a vapour cavity inside the steel, is one of the two types of laser welding processes and currently it is used in few industrial applications. Modern high power solid ... -
Delay reduction in courts of justice – possibilities and challenges of process improvement in professional public organizations
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 03.12.2011)Delays in the justice system have been undermining the functioning and performance of the court system all over the world for decades. Despite the widespread concern about delays, the solutions have not kept up with the ... -
Dependence of manufacturing parameters on the performance quality of welded joints made of direct quenched ultra-high-strength steel
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 29.09.2018)The use of ultra-high-strength steels (UHSS) has increased in the engineering industry during past decades especially in the fields of welded structural applications where products are required to possess a specific ... -
Deregulation’s Impact on the Railway Freight Transport Sector’s Future in the Baltic Sea Region
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 25.10.2013)The European transport market has confronted several changes during the last decade. Due to European Union legislative mandates, the railway freight market was deregulated in 2007. The market followed the trend started ... -
Design and analysis of a transversal-flux switched-reluctance-linear-machine pole-pair
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 18.12.1999)The Switched Reluctance technology is probably best suited for industrial low-speed or zerospeed applications where the power can be small but the torque or the force in linear movement cases might be relatively high. ... -
Design and characterization of large area position sensitive radiation detectors
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 23.11.2012)Planar, large area, position sensitive silicon detectors are widely utilized in high energy physics research and in medical, computed tomography (CT). This thesis describes author's research work relating to development ... -
Design and control of a permanent magnet bearingless machine
Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 29.11.2019)The overall efficiency of high-speed applications can be improved by applying direct drive motor technology. Operating in the high-speed region is a demanding task for the traditional bearing technology. With active magnetic ... -
Design and implementation of FPGA-based LQ control of active magnetic bearings
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 19.12.2007)The need for high performance, high precision, and energy saving in rotating machinery demands an alternative solution to traditional bearings. Because of the contactless operation principle, the rotating machines employing ... -
Design and Material Selection of High-Speed Rotating Electrical Machines
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 03.06.2016)The increasing emphasis on energy efficiency is starting to yield results in the reduction in greenhouse gas emissions; however, the effort is still far from sufficient. Therefore, new technical solutions that will enhance ... -
Design and Simulation of High-Speed Rotating Electrical Machinery
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 22.01.2016)Global energy consumption has been increasing yearly and a big portion of it is used in rotating electrical machineries. It is clear that in these machines energy should be used efficiently. In this dissertation the aim ... -
Design and testing of an armature-reaction-compensated permanent magnet synchronous generator for island operation
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 15.11.2013)At present, permanent magnet synchronous generators (PMSGs) are of great interest. Since they do not have electrical excitation losses, the highly efficient, lightweight and compact PMSGs equipped with damper windings ... -
Design Aspects of Megawatt-Range Direct-Driven Permanent MagnetWind Generators
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 22.12.2011)Direct-driven permanent magnet synchronous generator is one of the most promising topologies for megawatt-range wind power applications. The rotational speed of the direct-driven generator is very low compared with the ... -
Design of axial-flux permanent-magnet low-speed machines and performance comparison between radial-flux and axial-flux machines
Acta Universitatis LappeenrantaensisURN:ISSN:1456-4491 (19.04.2005)This thesis presents an alternative approach to the analytical design of surface-mounted axialflux permanent-magnet machines. Emphasis has been placed on the design of axial-flux machines with a one-rotor-two-stators ... -
Design of Customer-End Converter Systems for Low Voltage DC Distribution from a Life Cycle Cost Perspective
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 15.06.2018)Over the recent years, a lot of effort has been put into improving the efficiency and power density of power electronic converters, and efficiencies exceeding 99% and power densities of 10 W/cm3 have been reported. While ... -
Design of Product-Service Systems in printing industry
Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 07.10.2021)Traditional manufacturing enterprises allocated all their attention, resources, and efforts to design, manufacturing, and selling their products on the market. Changes occurring in the marketplace, growing competition, and ... -
Design of salient pole PM synchronous machines for a vehicle traction application – Analysis and
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 08.12.2012)This doctoral thesis presents a study on the development of a liquid-cooled frame salient pole permanent-magnet-exited traction machine for a four-wheel-driven electric car. The emphasis of the thesis is put on a radial ...