Search for dissertations about: "dynamic panel data analysis"

Showing result 6 - 10 of 32 swedish dissertations containing the words dynamic panel data analysis.

  2. 6. Towards Model-Based Condition Monitoring of Railway Switches and Crossings

    Author : Marko Milosevic; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sleeper void; Switches crossings; condition indicators; embedded sleeper accelerometer; multi-body simulations; dynamic vehicle–track interaction; MBS; S C; wheel–rail contact forces; condition monitoring; crossing rail geometry; displacement reconstruction.; model calibration;

    Abstract : Railway switches and crossings (S&C, turnouts) connect different track sections and create a railway network by allowing for trains to change between tracks. This functionality comes at a cost as the load-inducing rail discontinuities in the switch and crossing panels cause much higher degradation rates for S&C compared to regular plain line track. READ MORE

  4. 7. Empirical Essays on Railway Infrastructure Costs in Sweden

    Author : Mats Andersson; Lars-Göran Mattsson; John Preston; KTH; []
    Keywords : Railways; Infrastructure; Marginal Costs; Maintenance; Renewal; Econometrics; Panel Data; Survival Analysis; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP;

    Abstract : The subject of this thesis concerns pricing the use of transport infrastructure. We are empirically investigating the relationship between railway traffic volumes and infrastructure management costs. More specifically, we are interested in estimating the change in infrastructure management costs from marginal variations in traffic volumes, i.e. READ MORE

  5. 8. Likelihood-Based Tests for Common and Idiosyncratic Unit Roots in the Exact Factor Model

    Author : Martin Solberger; Rolf Larsson; Johan Lyhagen; Jean-Pieree Urbain; Uppsala universitet; []
    Keywords : panel unit root; dynamic factors; maximum likelihood; Lagrange multiplier; likelihood ratio; factor analysis; Statistics; Statistik;

    Abstract : Dynamic panel data models are widely used by econometricians to study over time the economics of, for example, people, firms, regions, or countries, by pooling information over the cross-section. Though much of the panel research concerns inference in stationary models, macroeconomic data such as GDP, prices, and interest rates are typically trending over time and require in one way or another a nonstationary analysis. READ MORE

  6. 9. Active and healthy ageing in Europe : significance of social relationships

    Author : Septi Kurnia Lestari; Nawi Ng; Xavier de Luna; Malin Eriksson; Mikael Rostila; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; older population; ageing; social relationships; social support; social participation; social contact; quality of life; frailty; panel data; latent class analysis; growth model; multilevel logistic regression; pandemic; Europe; SHARE; äldre befolkning; åldrande; sociala relationer; socialt stöd; socialt deltagande; sociala kontakter; livskvalitet; åldersskörhet; paneldata; latent klassanalys; tillväxtmodell; flernivålogistisk regression; pandemi; Europa; SHARE; epidemiologi; Epidemiology; Public health; folkhälsa;

    Abstract : Background: Social relationships have important roles in achieving active and healthy ageing. Social relationships are dynamic across the life course. A myriad of contextual and individual (e.g. READ MORE

  7. 10. Dynamic Train-Turnout Interaction – Mathematical Modelling, Numerical Simulation and Field Testing

    Author : Elias Kassa; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; contact forces; Karhunen–Loève expansion; dynamic train–turnout interaction; field test; wheel–rail contact geometry; stochastic analysis; switches and crossings; SRA - Transport;

    Abstract : Two models for simulation of dynamic interaction between train and turnout are developed. The first one is derived using a commercial software for dynamics of multi-body systems. READ MORE