Search for dissertations about: "Sara Johansson"

Showing result 1 - 5 of 19 swedish dissertations containing the words Sara Johansson.

2. 1. Knowledge, Product Differentiation and Trade

   Author : Sara Johansson; Åke Andersson; Börje Johansson; Volker Nitsch; Jönköping University; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Accessibility; Export; Human Capital; Innovation; Knowledge; Product Differentiation; Product Quality; Regional trade; Economics; Nationalekonomi;

   Abstract : The purpose of this thesis is to analyze the influence of knowledge on the export performance of firms in different regions. More specifically, this study focuses on the impact of knowledge on the structure of regional export flows, in terms of horizontal and vertical product differentiation, as well as the geographical distribution of export flows. READ MORE

4. 2. Algorithmically Guided Information Visualization : Explorative Approaches for High Dimensional, Mixed and Categorical Data

   Author : Sara Johansson Fernstad; Mikael Jern; Jimmy Johansson; Jane Shaw; Matthew O. Ward; Linköpings universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Information visualization; data mining; high dimensional data; categorical data; mixed data;

   Abstract : Facilitated by the technological advances of the last decades, increasing amounts of complex data are being collected within fields such as biology, chemistry and social sciences. The major challenge today is not to gather data, but to extract useful information and gain insights from it. READ MORE

5. 3. Geometrical controls on spectral induced polarization in time and frequency domain

   Author : Sara Johansson; Teknisk geologi; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Spectral induced polarization; Microstructure; Electrical properties; Tomography; Multiscale;

   Abstract : What can we learn by transmitting electrical currents through electrodes in the ground? Geophysical methods can help us to locate the bedrock, valuable mineral ores, remains of ancient buildings and many other secrets hiding below the surface. However, it is not only the universal interest for the unknown that drives the geophysical research forward. READ MORE

6. 4. From microstructure to subsurface characterization. Spectral information from field scale time domain induced polarization

   Author : Sara Johansson; Teknisk geologi; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Geofysik; Inducerad Polarisation;

   Abstract : A large variety of subsurface infrastructure projects of different types can gain valuable information from tomographic measurements of subsurface physical properties. With resistivity and time domain spectral induced polarization (IP), the distributions of the conductive and capacitive properties of the subsurface are obtained. READ MORE

7. 5. Characterization of hippocampal slice cultures as model systems for neurodegenerative processes in Alzheimer's disease

   Author : Sara Johansson; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : Alzheimer's disease (AD) is the most common cause of dementia and a growing health care problem worldwide. The disease affects different brain regions, including hippocampus, enthorhinal cortex, amygdala, neocortex and certain basal forebrain nuclei. Macroscopically, shrinkage of gyri and widening of sulci characterize the AD brain. READ MORE