Search for dissertations about: "Process-based modeling"

Showing result 1 - 5 of 12 swedish dissertations containing the words Process-based modeling.

2. 1. Modeling of new particle formation and growth in the atmospheric boundary layer

   Author : Emilie Öström; Centrum för miljö- och klimatforskning (CEC); []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; New particle formation; Secondary organic aerosols; Process-based modeling; Climate;

   Abstract : Atmospheric aerosols affect climate, but to what degree still remains one of the largest uncertainties in global climate models. To improve the representation of aerosols in future climate models we need a greater understanding of aerosol processes. READ MORE

4. 2. Fundamental Mathematical Modeling of Gas Injection in AOD Converters with Emphasis on the Inlet

   Author : Anders Tilliander; KTH; []
   Keywords : AOD; nozzle; modeling; steel; fluid flow; gas injection.;

   Abstract : The overall purpose of the present work has been to developa novel mathematical model of the gas injection in the AODconverter process, based on fundamental transport equations.The model development was divided into two major steps, wherethe first step involved modeling of gas injection through acylindrical nozzle at high gas flow rates (the nozzle model). READ MORE

5. 3. Systems Modeling Approaches to Physical Resource Management : An Industrial Ecology Perspective

   Author : Rajib Sinha; Björn Frostell; Maria Malmström; Miguel Brandao; Mujibur Rahman; KTH; []
   Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Complex systems modeling; environmental accounting and monitoring; en- vironmental footprint; industrial ecology; pressure-based driver-oriented approach; Modellering av komplexa system; miljöräkenskaper och miljöövervakning; miljöpåverkan; industriell ekologi; flödesbaserad övervakningaktörsorienterad strategi; Industriell ekologi; Industrial Ecology;

   Abstract : Many of the present problems that we are facing arise as unanticipated side-effects of our own actions. Moreover, the solutions implemented to solve important problems often create new problems. To avoid unintended consequences, understanding complex systems is essential in devising policy instruments and in improving environmental management. READ MORE

6. 4. Modeling Carbon and Water Fluxes in European Terrestrial Ecosystems

   Author : Pablo Morales; Institutionen för naturgeografi och ekosystemvetenskap; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; climatology; Fysisk geografi; geomorphology; pedology; cartography; Physical geography; water fluxes; climate change; kartografi; geomorfologi; klimatologi; marklära; carbon fluxes; regional climate models; vegetation dynamics; ecosystem modeling;

   Abstract : The controlling mechanisms and feedbacks between climate, the carbon and water cycling and vegetation in European ecosystems have attracted much attention in recent years but they are still not sufficiently understood. A better understanding of them is necessary to predict how they will be affected by climate change. READ MORE

7. 5. Modeling nutrient cycling and sustainable forest growth in a changing world

   Author : Patrik Wallman; LUCSUS; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; nutrients; sustainability; ForSAFE; Chemical technology and engineering; forestry technology; forestry; Silviculture; system dynamics; forest growth models; dynamic modeling; Kemiteknik och kemisk teknologi; skogsbruk; skogsteknik; Skogsvetenskap;

   Abstract : It took 70-80 years to realize the width of the impact of industrialization on the forest ecosystems since a forest ecosystem is a "slow system" as seen from a human perspective. An anticipated future climate change and increasing carbon dioxide and ozone levels will change the conditions even more with time and the widely used statistical forest growth models will not be applicable anymore. READ MORE