Search for dissertations about: "principal components PC"
Found 4 swedish dissertations containing the words principal components PC.
-
1. Likelihood-Based Panel Unit Root Tests for Factor Models
Abstract : The thesis consists of four papers that address likelihood-based unit root tests for panel data with cross-sectional dependence arising from common factors.In the first three papers, we derive Lagrange multiplier (LM)-type tests for common and idiosyncratic unit roots in the exact factor models based on the likelihood function of the differenced data. READ MORE
-
2. A multivariate approach to QSAR
Abstract : Quantitative structure-activity relationships (OSAR) constitute empirical analogy models connecting chemical structure and biological activity. The analogy approach to QSAR assume that the factors important in the biological system also are contained in chemical model systems.The development of a QSAR can be divided into subproblems:1. READ MORE
-
3. Theoretical description of Ti and Ti alloys from first principles
Abstract : Modern world is known for many advanced technologies and solutions to complex problems. Technical progress runs at high speed. In order to most effectively use materials, given to us by Nature, it is important to know their properties. To do laboratory experiments is often too expensive and time consuming. READ MORE
-
4. Mostly Panel Econometrics : Essays on Asymptotic Analysis and Enhanced Inference
Abstract : This thesis consists of five chapters which focus on panel data theory. Four of them analyze explicit panel data models and one chapter deals with time series forecasting model, where external panel data help us estimate unobserved explanatory variables. READ MORE