Search for dissertations about: "proxy data"

Showing result 16 - 20 of 205 swedish dissertations containing the words proxy data.

2. 16. Mostly Panel Econometrics : Essays on Asymptotic Analysis and Enhanced Inference

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

   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

4. 17. Evaluation of climate model simulations by means of statistical methods

   Author : Ekaterina Fetisova; Gudrun Brattström; Rolf Sundberg; Anders Moberg; Peter Guttorp; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Climate models; Climate proxy; Pseudo-proxy experiment; Factor analysis; the Wald confidence interval; the Fieller confidence set.; Mathematical Statistics; matematisk statistik;

   Abstract : Evaluation of climate model simulations is a key issue within climate research. The statistical framework proposed by Sundberg et al., 2012, provides a theoretical underpinning of methods for evaluation of climate models by use of climateproxy data from the last millennium. READ MORE

5. 18. Towards a flexible statistical modelling by latent factors for evaluation of simulated responses to climate forcings

   Author : Ekaterina Fetisova; Gudrun Brattström; Anders Moberg; Rolf Sundberg; Johan Lindström; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Confirmatory Factor Analysis; Measurement Error models; Structural Equation models; Wald confidence interval; Fieller confidence set; Climate model simulations; Climate forcings; Climate proxy data; Detection and Attribution; Mathematical Statistics; matematisk statistik;

   Abstract : In this thesis, using the principles of confirmatory factor analysis (CFA) and the cause-effect concept associated with structural equation modelling (SEM), a new flexible statistical framework for evaluation of climate model simulations against observational data is suggested. The design of the framework also makes it possible to investigate the magnitude of the influence of different forcings on the temperature as well as to investigate a general causal latent structure of temperature data. READ MORE

6. 19. Industrial IoT, Cyber-Physical Systems, and Digital Twins

   Author : Abdullah Aziz; Olov Schelén; Ulf Bodin; Jerker Delsing; David Hästbacka; Luleå tekniska universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Cyber-Physical Systems; Cyberfysiska system;

   Abstract : Industrial digitalization (Industry 4.0) is the digital transformation of industries in a connected environment of people, processes, services, systems, data, and industrial assets to realize smart industry and ecosystem of industrial innovation and collaboration. Three promising aspects of Industry 4. READ MORE

7. 20. Virtualizing Operational Technology by Distributed Digital Twins

   Author : Abdullah Aziz; Olov Schelén; Ulf Bodin; Jerker Delsing; Johan Åkerberg; Luleå tekniska universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Digital Twin; Industrial Digitalization; OT Virtualization; Microservices; Cyberfysiska system; Cyber-Physical Systems;

   Abstract : Industrial digitalization, stemming from the convergence of Information Technology (IT) and Operational Technology (OT), is a transformative force in modern industries. The Industrial Internet of Things (IIoT) and Industrial Cyber-Physical Systems (ICPS) empower industries with enhanced production processes, data-driven insights, and advanced automation. READ MORE