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Showing result 1 - 5 of 728 swedish dissertations matching the above criteria.

2. 1. Contributions to the Use of Statistical Methods for Improving Continuous Production

   Author : Francesca Capaci; Erik Vanhatalo; Bjarne Bergquist; Murat Kulahci; Johan Carlson; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Process industry; Continuous process; Statistical process control; Design of experiments; Process improvements; Simulation tool; Engineering process control; Kvalitetsteknik; Quality Technology Management;

   Abstract : Complexity of production processes, high computing capabilities, and massive datasets characterize today’s manufacturing environments, such as those of continuous andbatch production industries. Continuous production has spread gradually acrossdifferent industries, covering a significant part of today’s production. READ MORE

4. 2. Co-firing animal waste, sludge, residue wood, peat and forest fuels in a 50MWth CFB boiler : ash transformation, availability and process improvements

   Author : Henrik Hagman; Dan Boström; Rainer Backman; Anders Nordin; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Co-combustion; animal waste; peat; waste wood; forest residues; industrial sludge; limestone; CFB boiler; ash transformation; corrosion; erosion; ash and deposit characteristics; deposit buildup; boiler failures; availability; sulfation; boiler design; boiler conversion; waste derived fuels; large scale; Samförbränning; animaliskt avfall; torv; returträ; skogsbränsle; reningsslam; askomvandling; korrotion; erosion; ask- och beläggnings-karaktäristik; beläggningstillväxt; tillgänglighet; sulfatisering; panndesign; pannkonvertering; avfallsderiverade bränslen; storskalig;

   Abstract : The direct variable costs for heat and electricity production based on solid biomass fuel combustion is approximately 3-5 times lower than the costs in a fossil fuel-oil based boiler in Sweden. In addition waste derived biomass fuels are typically much cheaper than biomass not classified as waste. READ MORE

5. 3. ATMP Process : Improved Energy Efficiency in TMP Refining Utilizing Selective Wood Disintegration and Targeted Application of Chemicals

   Author : Dmitri Gorski; Per Engstrand; Jan Hill; Lars Johansson; Mittuniversitetet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ATMP; TMP; Hydrogen Peroxide; Magnesium Hydroxide; Mechanical Pre-Treatment; Fibre Characterisation; Refiner Bleaching; SC Paper; Newsprint; Cellulose and paper engineering; Cellulosa- och pappersteknik;

   Abstract : This thesis is focused on the novel wood chip refining process called AdvancedThermomechanical Pulp (ATMP) refining. ATMP consists of mechanical pretreatmentof chips in Impressafiner and Fiberizer prior to first stage refining atincreased intensity. READ MORE

6. 4. Software Process Assessment & Improvement in Industrial Requirements Engineering

   Author : Tony Gorschek; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Process Assessment; Process Improvement; Requirements Engineering; Abstraction; Requirements; SPI; RE;

   Abstract : Requirements Engineering (RE) is a crucial part of any product management and product development activity, and as such deficiencies in the RE process may have severe consequences. There are reports from industry that point towards inadequate requirements being one of the leading sources for project failure. READ MORE

7. 5. Software Process Improvement Framework

   Author : Natalja Nikitina; Mira Kajko-Mattsson; Pekka Abrahamsson; KTH; []
   Keywords : software process; process improvement; SPI; software method adoption; organizational change; change management; organizational aspects; social aspects; managerial aspects; SPI success factors; SPI checklist; Informations- och kommunikationsteknik; Information and Communication Technology;

   Abstract : Many software development organizations today are keen on improving their software development processes in order to develop software products faster, cheaper or better. For that reason, Software Process Improvement (SPI) has received significant attention from the research community over the last few decades. READ MORE