Designing awareness systems for social connectedness – A field study approach into theoretical foundations, design principles and evaluation

Being in touch, and being aware of the people in one’s social network strongly contributes to one’s sense of social well-being. As communication technology has become more ubiquitous, it is possible to always be in touch with friends and relatives in the periphery of one’s attention, e.g. through instant messaging and online social networks....

Modularization and Specification of Service-Oriented Systems

Managing change in IT outsourcing arrangements

Few studies in the field of IT outsourcing relations include the view of providers. Previous research has identified the lack of sustainability in service performance as a recurring problem, e.g. the continuous delivery of high quality services over time. It can be argued that IT outsourcing providers who manage to establish a dynamic fit...

Design of ecological concrete by particle packing optimization

The goal of this research project on Ecological Concrete was to reduce the CO2-emission of concrete and to reuse secondary materials form concrete production and other industries simultaneously. This also minimizes the use of natural resources and the production costs. To replace cement in concrete in a safe way, the main question answered in...

Electron spins in nanowire quantum dots

For small magnetic memories, the ultimate limit is a single magnetic particle, a single electron spin. A lot of research is put in developing devices that can utilize such a single spin memory. At the same time, there is also interest from a more fundamental point of view: on these small scales, Quantum Mechanics starts to play a role. Devices...

Protein-Metal Hybrids as Catalysts for Selective Oxidations

Selective oxidation reactions are important transformations for the production of fine chemicals. However, there is a need to replace current oxidation methods by more sustainable alternatives. In this respect the use of biocatalysts offers a large benefit, because they operate under mild conditions, and their use is accompanied by high chemo-,...