Abstract: Many daily activities we want to finish as fast and smoothly as possible. The same applies when we use our computing devices. Examples range from low-level actions, such as selecting the “Print” item from the “File” menu or clicking on desktop icons, to higher level activities and more complex tasks, such as finding the favorite holiday photo in the personal collection, or to use a smartphone to navigate a city map or to browse a long list of products before deciding on a purchase. Throughout the years, the desire for interaction efficiency has motivated the Human-Computer Interaction research community to seek and explore new interaction mechanisms and user interface techniques that improve on the state of the art. In this talk I will present a handful of past projects in which we have applied the experimental method to arrive at insights regarding novel user interface design solutions.
CV: David Ahlström received his M.Sc. degree from Stockholm University and his Ph.D. from the Alpen-Adria-Universität Klagenfurt where he works in the Interactive Systems Group at the Department of Informatics Systems. His research is focused on the design and evaluation of interactive human-computer user interfaces with the aim to improve every day activities of computer use.

Abstract: Software is omnipresent. It is key to successful businesses and has become key to our social activities. As many systems, also software systems need to change in order to stay successful on the market. However, these changes cause software systems to become larger in size and more complex as described by Lehman’s Laws of Software Evolution. As a consequence, more resources are needed to maintain, or in general, evolve a software system. Evolving software systems is therefore mastering change and system complexity. The goal of my research and teaching is to provide software engineers with means to master this challenge.
