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Induction Motor Drive Energy Efficiency - Simulation and Analysis
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 27.08.2010)A coupled system simulator, based on analytical circuit equations and a finite element method (FEM) model of the motor has been developed and it is used to analyse a frequency-converterfed industrial squirrel-cage induction ... -
Induction motor versus permanent magnet synchronous motor in motion control applications: a comparative study
URN:ISSN:1456-4491Acta Universitatis Lappeenrantaensis (05.12.2006)High dynamic performance of an electric motor is a fundamental prerequisite in motion control applications, also known as servo drives. Recent developments in the field of microprocessors and power electronics have enabled ... -
Industrial solution business – transition from product to solution offering
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 29.11.2013)The business logic in the manufacturing industry has changed in the 21st century. In the current industrial market, manufacturers are driven to provide more comprehensive offerings that go beyond the traditional ... -
The influence of crystallization conditions on the filtration characteristics of sulphathiazole suspensions
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 22.12.2009)Cooling crystallization is one of the most important purification and separation techniques in the chemical and pharmaceutical industry. The product of the cooling crystallization process is always a suspension that contains ... -
Influence of multi-phase phenomena on semibatch crystallization processes of aqueous solutions
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 07.08.2015)Crystal properties, product quality and particle size are determined by the operating conditions in the crystallization process. Thus, in order to obtain desired end-products, the crystallization process should be ... -
Influence of stationary phase and eluent properties on chromatographic separation of carbohydrates
Acta Universitatis LappeenrantaensisURN:ISSN:1456-4491 (13.12.2002)In this thesis, the sorption and elastic properties of the cation-exchange resins were studied to explain the liquid chromatographic separation of carbohydrates. Na+, Ca2+ and La3+ form strong poly(styrene-co-divinylbenzene) ... -
Information sharing in R&D collaboration - Context-dependency and means of governance
Acta Universitatis LappeenrantaensisURN:ISSN:1456-4491 (10.11.2006)Tiedon jakaminen ja kommunikointi ovat tärkeitä toimintoja verkostoituneiden yritysten välillä ja ne käsitetäänkin yhteistyösuhteen yhtenä menestystekijänä ja kulmakivenä. Tiedon jakamiseen liittyviä haasteita ovat mm. ... -
Information System ProcessInnovation Adoption, Adaptation, Learning, and Unlearning: A Longitudinal Case Study
Acta Universitatis Lappeenrantaensis (2005)This thesis examines the history and evolution of information system process innovation (ISPI) processes (adoption, adaptation, and unlearning) within the information system development (ISD) work in an internal information ... -
Information-based industrial maintenance – an ecosystem perspective
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 14.12.2018)In industrial maintenance, the increasing amount of data and information makes the management of information flows much more challenging than previously. Data from different sources is another issue, data can be real-time ... -
The initial oxidation of transition metal surfaces
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 18.04.2008)Due to their numerous novel technological applications ranging from the example of exhaust catalysts in the automotive industry to the catalytic production of hydro- gen, surface reactions on transition metal substrates ... -
Innovation and Internationalisation in Russian Companies: Challenges and Opportunities for Open Innovation and Cooperation
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 07.07.2011)Increasing globalisation and intensified cross-border cooperation, together with significant technological breakthroughs, create a fascinating gap for the research of the relationship between internationalisation and ... -
Innovation Ecosystem Perspectives on Financial Services Innovation
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 08.12.2015)The context of financial services has been characterised by changes in the regulatory, technological and societal landscape. Consumers are increasingly interested in mobile payments, crowdfunding and microfinance ... -
Innovation in a Non-Formal Adult Education Organisation – Multi-Case Study in Four Adult Education Centres
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 14.06.2013)More than ever, education organisations are experiencing the need to develop new services and processes to satisfy expanding and changing customer needs and to adapt to the environmental changes and continually tightening ... -
Innovations of ageing and societal transition : Dynamics of change of the socio-technical regime of ageing
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, Lahti School of Innovation, 29.01.2011)The purpose of this dissertation is to examine the dynamics of the socio-technical system in the field of ageing. The study stems from the notion that the ageing of the population as a powerful megatrend has wide societal ... -
Institution-based view of entrepreneurial internationalization
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 23.11.2016)This doctoral study focuses on the relationship between institutional environment and international entrepreneurship. Although researchers have widely emphasized and accepted the view that firms’ strategic behavior, ... -
Institutions, Social Entrepreneurship, and Internationalization
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 21.06.2017)The dissertation is aimed at investigating the complex and understudied relationships between the home country institutional environment, social entrepreneurship activities, and the likelihood of entrepreneurial ... -
Insulation System in an Integrated Motor Compressor
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 16.12.2010)A high-speed and high-voltage solid-rotor induction machine provides beneficial features for natural gas compressor technology. The mechanical robustness of the machine enables its use in an integrated motor-compressor. ... -
Integrated hub gear motor for heavy-duty off-road working machines - interdisciplinary design
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 23.03.2017)This doctoral dissertation studies solutions that meet the demands made for the propulsion motors of off-road working machines. It has been shown that in a hybridization process, without a mechanical gear, it is not ... -
Integrating information systems across organizations in the construction industry
Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 19.11.2021)The digital transformation of traditional supply-chain industries into platform-based businesses has been touted as a promising strategy to achieve competitive advantage and market leadership. Despite prominent case studies ... -
Integrating user experience into early phases of software development
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 16.12.2011)The value and benefits of user experience (UX) are widely recognized in the modern world and UX is seen as an integral part of many fields. This dissertation integrates UX and understanding end users with the early phases ...