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Estimation and Model Validation of Diffusion Processes

Estimation and Model Validation of Diffusion Processes Abstract The main motivation for this thesis is the need for estimation and model validation of diffusion processes, i.e. stochastic processes satisfying a stochastic differential equation driven by Brownian motion. This class of stochastic processes is a natural extension of ordinary differential equations to dynamic, stochastic systems

The Effect of the Visual Gender of an Embodied Agent: A Cross-Cultural Comparison

This study explored if the visual gender representations (androgynous, male, or female) of an embodied agent would influence students’ perceptions of their agent and their attitudes toward the agent as their conversational partner. The study also explored if students’ gender and cultural background would interact with the agent’s visual gender to influence their perceptions and attitudes. Particip

A Brief Overview of Some Methods and Approaches for Investigating Interdependencies in Critical Infrastructures

This chapter presents methods for analysing interdependencies in critical infrastructures. In general, there are three groups of methods for analysing interdependencies; (1) conceptual, (2) model and simulation and (3) empirical and knowledge-based approaches. Examples of methods belonging to these groups are presented. The latter part of the chapter discusses challenges related to modelling, focu

Forskning och utveckling om digitala läromedel för att gynna lärande och lärare

Det finns två huvudsakliga svar på frågan varför forskning och utveckling, F&U, i området digitala läromedel är viktig. Det första är relativt uppenbart: Det produceras idag allt fler digitala läromedel som används i ökad utsträckning i skolan. För att kunna ta fram digitala läromedel av hög kvalitet krävs forskning och utveckling. Det andra och mindre uppenbara svaret är att digitala läromede

Hox transcription factors in hematopoiesis

Hematopoiesis is a lifelong, dynamic process in which a small number of pluripotent hematopoietic stem cells (HSC) residing in the bone marrow (BM) give rise to billions of mature blood cells of both myeloid and lymphoid origin each day. This enormous capacity of HSC has been utilized in BM transplantations for 4 decades and is also very important for future gene therapy. Understanding what molecu