Hae LUTPubista
Aineistot 1-10 / 11
Analysis of the voltage source inverter with small DC-link capacitor
(2005-11-25)
IIn electric drives, frequency converters are used to generatefor the electric motor the AC voltage with variable frequency and amplitude. When considering the annual sale of drives in values of money and units sold, the ...
Power quality improving with virtual flux-based voltage source line converter
(2005-03-05)
Line converters have become an attractive AC/DC power conversion solution in industrial applications. Line converters are based on controllable semiconductor switches, typically insulated gate bipolar transistors. Compared ...
Business Development Efforts and Performance Improvements in SMEs Case Study of Business Development Projects Implemented in SME
(2005)
Under the circumstances of the increasing market pressure, enterprises try to improve their competitive position by development efforts, and a business development project is one tool for that. There are not many answers ...
Studies on coordination of systems development process
(2005-08-12)
This thesis examines coordination of systems development process in a contemporary software producing organization. The thesis consists of a series of empirical studies in which the actions, conceptions and artifacts of ...
Supporting knowledge creation and sharing in the early phases of the strategic innovation process
(2005-08-19)
The driving forces of technology and globalization continuously transform the business landscape in a way which undermines the existing strategies and innovations of organizations. The challenge for organizations is to ...
Theoretical and numerical study of thermomagnetic convection in magnetic fluids
(2005-10-14)
In this thesis, the magnetic field control of convection instabilities and heat and mass transfer processesin magnetic fluids have been investigated by numerical simulations and theoretical considerations. Simulation models ...
Gas-liquid mass transfer in bubbly flow: Estimation of mass transfer, bubble size and reactor performance in various applications
(2005-12-05)
Gas-liquid mass transfer is an important issue in the design and operation of many chemical unit operations. Despite its importance, the evaluation of gas-liquid mass transfer is not straightforward due to the complex ...
MANAGING STRATEGIC CHANGE:New Business Models Applying Wireless Technology as a Source of Competitive Edge
(2005-08-23)
The diffusion of mobile telephony began in 1971 in Finland, when the first car phones, called ARP1 were taken to use. Technologies changed from ARP to NMT and later to GSM. The main application of the technology, however, ...
Vaarinpidosta virtuaaliaikaan : Sata vuotta suomalaista tilintarkastusta
(2005-05-05)
Tämän tutkimuksen aiheena on tilintarkastuksen historiallinen kehittyminen Suomessa runsaan sadan vuoden aikana. Tutkimuksen tavoitteena on analysoida osakeyhtiön tilintarkastuksen kehitystä ja yhdistää vuosisadan ...
Design of axial-flux permanent-magnet low-speed machines and performance comparison between radial-flux and axial-flux machines
(2005-04-19)
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 ...