Selaus nimekkeen mukaan kokoelmassa Väitöskirjat

Aineistot 112-131 / 1156

    • Bag-of-Features Approach to Unsupervised Visual Object Categorisation 

      Kinnunen, Teemu
      Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 12.12.2011)
      The large and growing number of digital images is making manual image search laborious. Only a fraction of the images contain metadata that can be used to search for a particular type of image. Thus, the main research ...

    • Balanced Scorecardin implementointi ja käytön nykytila Suomessa 

      Toivanen, Jouko Ensio
      Acta Universitatis LappeenrantaensisURN:ISSN:1456-4491 (2001)
      Lisääntynyt Balanced Scorecardin käyttö herätti kiinnostuksen tutkia, mistä BSC:ssä oli oikein kysymys. Epäonnistumiset BSC-projekteissa vaikuttivat siihen, että haluttiin tutkia, mikä nykyisissä projektimalleissa oli ...

    • Bayesian analysis of SEIR epidemic models 

      Rusatsi, Denis Ndanguza
      Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 18.12.2015)
      This thesis concerns the analysis of epidemic models. We adopt the Bayesian paradigm and develop suitable Markov Chain Monte Carlo (MCMC) algorithms. This is done by considering an Ebola outbreak in the Democratic Republic ...

    • Bayesian inference by informative Gaussian features of the data 

      Springer, Sebastian
      Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 05.02.2021)
      Given a set of measurements, a model can be calibrated to data by minimising a cost function that captures the model-data difference. The standard cost function for deterministic models is the residual sum of squares between ...

    • Bayesian likelihoods for intractable data 

      Maraia, Ramona
      Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 01.12.2023)
      We live in the Information Age, specific historical moment in which making well-informed decisions is often decisive for the survival of projects and investments. In the past decade, consistent efforts have been dedicated ...

    • Bayesian methods for estimation, optimization and experimental design 

      Solonen, Antti
      Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 11.11.2011)
      Mathematical models often contain parameters that need to be calibrated from measured data. The emergence of efficient Markov Chain Monte Carlo (MCMC) methods has made the Bayesian approach a standard tool in quantifying ...

    • Bayesian optimal experimental design in inverse problems: applications and stability 

      Rojo Garcia, Jose Rodrigo
      Acta Universitatis Lappeenrantaensis : 1193 (Lappeenranta-Lahti University of Technology LUT, 11.04.2025)
      The focus of this thesis is in the area of Bayesian D-Optimal Experimental Design (DOED) for Bayesian inverse problems. Here, we introduce some theoretical results of stability and applied some standard numerical algorithms ...

    • Benefits from Open Data: Barriers to Supply and Demand of Open Data in Private Organizations 

      Herala, Antti
      Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 12.10.2018)
      Open data is a concept that has been somewhat readily adopted by governments. The key ideology behind open data is to release previously restricted data with a licence that allows all forms of use, reuse, and redistribution. ...

    • Between Memory and Strategy: Media Discourse Analysis of an Industrial Shutdown 

      Ahonen, Pasi
      Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 12.12.2014)
      In 2006 UPM was able to gain a level of social legitimacy that allowed it to carry out one of the largest industrial restructuring programmes in Finnish industrial history, shut down major operations in Finland and still ...

    • Big Data – Towards Data-driven Business 

      Ylijoki, Ossi
      Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 12.04.2019)
      This research stems from the disruptive phenomenon known as digital transformation, i.e. the pervasive use of digital technologies in order to add value in business. As a side effect of digital transformation, vast amounts ...

    • Biogas production in regional integrated biodegradable waste treatment – Possibilities for improving energy performance and reducing GHG emissions 

      Havukainen, Jouni
      Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 05.12.2014)
      The greatest threat that the biodegradable waste causes on the environment is the methane produced in landfills by the decomposition of this waste. The Landfill Directive (1999/31/EC) aims to reduce the landfilling of ...

    • Bioprospecting for Nordic photosynthetic consortia for wastewater treatment, carbon capture, and value creation 

      Wicker, Rebecca J.
      Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 13.12.2023)
      Microalgal biotechnology has been proposed as a potential solution to multiple global challenges, especially carbon capture, wastewater treatment, and bioproduction of valuable fuels and materials. Conventional microalgal ...

    • Blockchain for sustainability : a multilevel perspective connecting consumers and organisations 

      Hina, Maryam
      Acta Universitatis Lappeenrantaensis : 1236 (Lappeenranta-Lahti University of Technology LUT, 24.10.2025)
      Consumers' interest in sustainable consumption is growing, yet adoption remains low due to the uncertainties surrounding sustainable products, which has become a prevailing concern given the untrustworthy businesses’ ...

    • Blood vessel segmentation in the analysis of retinal and diaphragm images 

      Vostatek, Pavel
      Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 06.04.2018)
      The segmentation and characterization of structures in medical images represents an important part of the diagnostic and research procedures in medicine. This thesis focuses on the characterization methods in two application ...

    • Bridging academic software sustainability design with corporate business planning 

      Lammert, Dominic
      Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 02.02.2024)
      Software systems have become deeply intertwined with both our personal lives and our professional lives, blurring the demarcation between the colloquially referred ‘real world’ and ‘digital world’. Consequently, software ...

    • Broadband excitation in the system identification of active magnetic bearing rotor systems 

      Hynynen, Katja
      Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 04.11.2011)
      One of the targets of the climate and energy package of the European Union is to increase the energy efficiency in order to achieve a 20 percent reduction in primary energy use compared with the projected level by 2020. ...

    • Building organizational creativity – a multitheory and multilevel approach for understanding and stimulating organizational creativity 

      Nisula, Anna-Maija
      Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 19.12.2013)
      Organizational creativity is increasingly important for organizations aiming to survive and thrive in complex and unexpectedly changing environments. It is precondition of innovation and a driver of an organization’s ...

    • Building renovation business in Finland : paths to enhanced profitability management 

      Rajala, Pekka
      Acta Universitatis Lappeenrantaensis : 1204 (Lappeenranta-Lahti University of Technology LUT, 10.06.2025)
      The need for building renovation (BR) has increased in recent decades, particularly in developed countries. This need is driven by aging building stocks, renovation backlogs, and the push for CO2 emission reductions through ...

    • Building supply chain resilience in the age of digitalization 

      Harju, Aleksi
      Acta Universitatis Lappeenrantaensis : 1202 (Lappeenranta-Lahti University of Technology LUT, 30.05.2025)
      In an era of rapid digital transformation and increasing sustainability pressures, global supply chains face unprecedented challenges in managing risks and building resilience. This dissertation explores how digitalization ...

    • Business Development Efforts and Performance Improvements in SMEs Case Study of Business Development Projects Implemented in SME 

      Forsman, Helena
      Acta Universitatis LappeenrantaensisURN:ISSN:1456-4491 (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 ...