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Visar resultat 6 - 10 av 73 avhandlingar som matchar ovanstående sökkriterier.

1. 6. Photo-induced Structural Dynamics in Transition Metal Dichalcogenides

   Författare :Shaozheng Ji; Jonas Weissenrieder; James Gardner; Oscar Tjernberg; Fabrizio Carbone; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ultrafast electron microscope; coherent shear phonon; photo-induced phase transition; 1T-TaSe2; Td-WTe2; charge density wave; ultrasnabbt elektronmikroskop; koherent skjuvphonon; fotoinducerad fasövergång; 1T-TaSe2; Td-WTe2; laddningsdensitetsvåg; Material and Nano Physics; Material- och nanofysik;

   Sammanfattning : Ultrafast electron microscope (UEM), a combination of transmission electron microscopy and laser-based pump-probe techniques, facilitates ultrafast imaging, diffraction, and electron-spectroscopy with high spatial resolution. The unique advantages of UEM enable local ultrafast dynamic studies in materials, nano-system, and biology. LÄS MER

3. 7. Structural and Interaction Studies of the Human Protein Survivin

   Författare :Maria-Jose Garcia-Bonete; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; survivin; cell cycle; apoptosis; protein interactions; X-ray crystallography; Bayesian inference;

   Sammanfattning : Cell division and cell death (apoptosis) are two essential processes to maintain the specific number of cells in all multicellular organisms. In humans, the misregulation of these processes leads to severe diseases, such as cancer, and neurological, inflammatory or autoimmune diseases. LÄS MER

4. 8. Multivariate Aspects of Phylogenetic Comparative Methods

   Författare :Krzysztof Bartoszek; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; General Linear Model; Ornstein-Uhlenbeck process; Multivariate phylogenetic comparative method; Evolutionary model; Adaptation; Optimality; Measurement error; Regression; Adaptation; Major-axis regression; Reduced major-axis regression; Structural equation; Allometry; Phylogenetic inertia; Allometry;

   Sammanfattning : his thesis concerns multivariate phylogenetic comparative methods. We investigate two aspects of them. The first is the bias caused by measurement error in regression studies of comparative data. We calculate the formula for the bias and show how to correct for it. LÄS MER

5. 9. Essays on Empirical Macroeconomics

   Författare :Martin W Johansson; Nationalekonomiska institutionen; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; economic systems; economic theory; econometrics; Economics; structural breaks.; output volatility; threshold autoregression; fiscal policy; real exchange rates; Aggregate consumption; economic policy; Nationalekonomi; ekonometri; ekonomisk teori; ekonomiska system; ekonomisk politik;

   Sammanfattning : The first essay reexamines the proposed presence of so-called loss aversion in aggregate consumption. Recent empirical and theoretical studies have suggested, that consumption growth reacts asymmetrically to positive and negative expected income growth. LÄS MER

7. 10. Essays on Capital Structure

   Författare :Hossein Asgharian; Nationalekonomiska institutionen; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; economic theory; econometrics; Economics; Extreme Bound Analysis; Selection bias; Lisrel; Semiparametric; Nonparametric; Financial distress; Panel data analysis; Leverage; Capital structure; economic systems; economic policy; Nationalekonomi; ekonometri; ekonomisk teori; ekonomiska system; ekonomisk politik;

   Sammanfattning : Chapter 2 analyses the relationship between capital structure and industry classification of Swedish firms. This study also analyses the determinants of the capital structure at the industry level. LÄS MER