Koblenz University of Applied Sciences

A local discontinuous Galerkin method for Dirichlet boundary control problems

Abstract In this paper, we consider control constrained L 2 -Dirichlet boundary control of a convection−diffusion equation on a two dimensional convex polygonal domain. We discretize the control problem based on the local discontinuous Galerkin method with piecewise linear ansatz...

Too old to rush, too young to wait: Rural older entrepreneurial behaviour from the perspective of socio-biophysical economics

The paper explores the behaviour of rural older entrepreneurs by examining their social identities in the biophysical rural context. Taking a grounded, socio-biophysical approach to older entrepreneurship, the article examines the social and biophysical contexts of older rural en...

Quenching Kinetics of Triplet-State Photosensitizers in Environmental Photochemistry

Abstract Triplet-state photosensitizers (3Sens*) are central to carbon cycling and pollutant degradation in sunlit surface and atmospheric waters, but their environmental roles remain only partly understood. Although the photophysical and photochemical properties of 3Sens* have b...

Coupling opinion dynamics and epidemiology

Abstract This research investigates the coupled dynamics of behavior and infectious disease using a mathematical model. We integrate a two-state q -voter opinion process with SIS-type infection dynamics, where transmission rates are influenced by opinion, and an infection-induced...

Do they care? An analysis of stakeholder perspectives on sustainability in luxury sailing yachts

This paper presents a thorough investigation of the notion of sustainability within the specific market sector of luxury sailing yachts. The study explores the various ways in which this concept is perceived, evaluated and operationalised. It examines the relationship between env...

Standard-oriented exam task characteristics and their relations to multidimensional student outcomes in mathematics

Abstract In line with multidimensional educational goals, mathematics teaching targets both standards-based competencies and motivational-affective outcomes (enjoyment and interest in mathematics, instrumental motivation). We examined exam tasks as learning and assessment opportu...