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Showing result 1 - 5 of 36 swedish dissertations matching the above criteria.

2. 1. Lateral movements versus stationarity : adaptive alternatives in benthic invertebrates to the seasonal environment in a boreal river

   Author : Tommy I. Olsson; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Benthic invertebrates; cold-hardiness; ice; migrations; overwintering; river; seasonal variations; spatial distribution; spring flood; water level;

   Abstract : Benthic invertebrates inhabiting boreal rivers are exposed to very large seasonal variations in their physical environment. The extremes are in winter when the littoral area freezes solid and in spring when water flow increases rapidly. READ MORE

4. 2. Stationarity in Hilbert spaces

   Author : Gustaf Strandell; Uppsala universitet; []
   Keywords : ;

   Abstract : .... READ MORE

5. 3. The effect of scale on the morphology, mechanics and transmissivity of single rock fractures

   Author : Nader Fardin; KTH; []
   Keywords : Anisotropy; Aperture; Asperity degradation; Contact area; Finite Element Method FEM ; Flow analysis; Fractals; Fracture morphology; Heterogeneity; Stress-deformation; Surface roughness; Roughness-Length method; Scale dependency; Stationarity; Transm;

   Abstract : This thesis investigates the effect of scale on themorphology, mechanics and transmissivity of single rockfractures using both laboratory and in-situ experiments, aswell as numerical simulations. Using a laboratory 3D laserscanner, the surface topography of a large silicon-rubberfracture replica of size 1m x 1m, as well as the topography ofboth surfaces of several high-strength concrete fracturereplicas varying in size from 50mmx50mm to 200mm x 200mm, werescanned. READ MORE

6. 4. Essays on Fiscal Policy, Private Consumption and Non-Stationary Panel Data

   Author : Kristian Jönsson; Nationalekonomiska institutionen; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; ekonomiska system; ekonomisk politik; economic systems; economic theory; econometrics; Economics; Cross-Sectional Dependence; Output Convergence; Unit Root; Stationarity; Panel Data; Government Consumption; Non-Keynesian Effects; Private Consumption; economic policy; Nationalekonomi; ekonometri; ekonomisk teori; Fiscal Policy;

   Abstract : In the first essay of this thesis, we examine whether the effects of fiscal expansions and contractions exert a symmetric influence on the relationship between fiscal policy and private consumption. Our results indicate a considerable asymmetry across fiscal expansions and contractions. READ MORE

7. 5. Time Varying Parameters in Exchange Rate Models

   Author : Richard Henricsson; Nationalekonomiska institutionen; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; economic systems; economic theory; econometrics; Economics; stochastich volatility.; purchasing power parity; GARCH; exchange rates; Stationarity; economic policy; Nationalekonomi; ekonometri; ekonomisk teori; ekonomiska system; ekonomisk politik;

   Abstract : This thesis consists of five papers on different aspects of parametervariation in some common exchange rate models.The first paper investigates the stability in the real exchange rate, witch is equivalent to purchasing power parity (PPP). READ MORE