Sökning: "nested models"

Visar resultat 11 - 15 av 59 avhandlingar innehållade orden nested models.

1. 11. Mostly Panel Econometrics : Essays on Asymptotic Analysis and Enhanced Inference

   Författare :Ovidijus Stauskas; Joakim Westerlund; Ignace De Vos; Milda Norkute; Nationalekonomiska institutionen; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Econometrics; Panel Data; Factor Models; Bootstrap; Forecasting; Non-Stationary Data; Common Correlated Effects; CCE;

   Sammanfattning : 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. LÄS MER

3. 12. Models and Methods for Random Fields in Spatial Statistics with Computational Efficiency from Markov Properties

   Författare :David Bolin; Matematisk statistik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; random fields; Gaussian Markov random fields; Matérn covariances; stochastic partial differential equations; Computational efficiency;

   Sammanfattning : The focus of this work is on the development of new random field models and methods suitable for the analysis of large environmental data sets. A large part is devoted to a number of extensions to the newly proposed Stochastic Partial Differential Equation (SPDE) approach for representing Gaussian fields using Gaussian Markov Random Fields (GMRFs). LÄS MER

4. 13. Essays on Social Distance, Institutions, and Economic Growth

   Författare :Gustav Hansson; Göteborgs universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; institutions; rule of law; government effectiveness; development; colonial origin; country size; Montesquieu; nationalism; nation-building; ethnic diversity; protectionism; non-nested tests; modeling selection; economic growth; productivity; equipment investment; investment prices.;

   Sammanfattning : Paper 1: Country Size and the Rule of Law: Resuscitating Montesquieu In this paper, we demonstrate that there is a robust negative relationship between the size of country territory and a measure of the rule of law for a large cross-section of countries. We outline a theoretical framework featuring two main reasons for this regularity; firstly that institutional quality often has the character of a local public good that is imperfectly spread across space from the core of the country to the hinterland, and secondly that a large territory usually is accompanied by valuable rents and a lack of openness that both tend to distort property rights institutions. LÄS MER

5. 14. Gene Regulatory Networks: Dynamics and Stability

   Författare :Carl Troein; Beräkningsbiologi och biologisk fysik - Genomgår omorganisation; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; systems; control; Datalogi; numerisk analys; system; kontroll; Computer science; numerical analysis; Fysik; biomathematics biometrics; Bioinformatik; medicinsk informatik; biomatematik; Physics; medical informatics; transcriptional regulation; gene regulatory networks; Bioinformatics; signaling pathway profiling; stem cell regulation; metabolic pathway; fitness; nested canalyzing rules; Kauffman networks; random Boolean networks; Fysicumarkivet:2007:Troein;

   Sammanfattning : Life as we know it is based on cells that use proteins and RNA to carry out metabolism, self-replication, and other essential tasks. The genes that code for these molecules are encoded in DNA, and through the processes of transcription and translation the cell expresses its genes. LÄS MER

7. 15. Phytoestrogens and prostate cancer : experimental, clinical, and epidemiological studies

   Författare :Annika Bylund; Pär Stattiin; Anders Bergh; Göran Hallmans; Swen-Olof Andersson; Umeå universitet; []
   Nyckelord :prostatic neoplasm; phytoestrogens; lignans; enterolactone; rye; 7-hydroxymataireorcinol; nude mice; TRAMP mice; nested case control study; LNCaP; Oncology; onkologi;

   Sammanfattning : Dietary factors may affect development and progression of prostate cancer. Experimental and epidemiological studies have suggested an effect of phytoestrogens on prostate cancer. Lignans are the predominant phytoestrogen in a Western diet. LÄS MER