Nicotine is a well-known and highly addictive substance with complex effects on cognition, anxiety, and neurophysiology. Despite its short-term anxiolytic effects, this drug often exacerbates anxiety symptoms. It disrupts emotional regulation through its impact on the central nucleus of the amygdala …

We investigate how interactive representations can be used to support learners while learning about the circular motion of celestial bodies. We present the developed representation and accompanying lesson, and report on the effect.

Having learners (K7–10) acquire system thinking skills is challenging. Together with teachers we deploy qualitative representations of complex systems to enable this learning process. Teachers select their own topics for their leaners to work on which makes that lessons vary in content depending on the …

This thesis is an overview of the market and management for WEEE (waste of electrical and electronic equipment) in Bulgaria. It was executed to answer certain questions to WEEE Forum, which was my internship provider. Chapter 2 analyzes the WEEE market and business developments in Bulgaria. Chapter 2.1 …