Auflistung nach Autor:in "Ostendorp, Marie-Christin"
1 - 3 von 3
Treffer pro Seite
Sortieroptionen
- muc: langbeitrag (vorträge)Ambient Progress Bar - relaxed and efficient work in waiting periods(Mensch & Computer 2013: Interaktive Vielfalt, 2013) Ostendorp, Marie-Christin; Harre, Andreas; Jacob, Sebastian; Müller, Heiko; Heuten, Wilko; Boll, SusanneThe number of emotionally exhausted employees increases due to deadline pressure and multitasking at work. The compliance with deadlines is even more difficult because of the fact that parallel running subtasks interfere with the concentration on a primary task at the computer. These subtasks cause waiting periods that cannot be efficiently used to continue working on the primary task. To solve this problem we developed the Ambient Progress Bar - an ambient display that provides information about the progress of a parallel running subtask in the periphery of the monitor. After a first design phase in which we analysed the context of use, the requirements of our users via a survey and literature research, we tested our first prototype of the Ambient Progress Bar in an empirical usability evaluation. The refined prototype was further used in two experiments in which we were able to show that users working with the Ambient Progress Bar can continue more efficiently and relaxed with their primary task. Thus the Ambient Progress Bar offers a possibility to reduce stress at work and to ease compliance with deadlines and thereby is one solution to decrease the number of emotionally exhausted employees.
- KonferenzbeitragCertifying Energy Efficiency of Android Applications(Proceedings of the 28th Conference on Environmental Informatics - Informatics for Environmental Protection, Sustainable Development and Risk Management, 2014) Meier, Johannes; Ostendorp, Marie-Christin; Jelschen, Jan; Winter, AndreasWhile smartphone and tablet functionality is increasing, battery runtime goes down. Both users and software developers are not always aware of the energy consumed by applications. Without this information, users cannot choose energy-efficient apps to prevent battery drain. Awareness of energy consumption would also entice app developers to implement more energy-efficient apps to remain competitive. This paper presents a certification process and corresponding Android tool support for comparing apps regarding energy efficiency. It is demonstrated using notepad apps.
- KonferenzbeitragELVIZ: A Query-Based Approach to Model Visualization(Modellierung 2014, 2014) Ostendorp, Marie-Christin; Jelschen, Jan; Winter, AndreasVisualization is an important technique for understanding and exploring complex models. To be useful, visualizations have to be specifically tailored towards the visualization task and the analyzed model. Many standard charts or graph-based visualizations exist, but need to be mapped to the concepts of the model under study. Existing model visualization tools often have predetermined visualization kinds and content, impeding reuse of standard visualizations for various purposes, or lacking the ability to flexibly map source model concepts to different visualization elements. This paper presents ELVIZ („Every Language Visualization”), an approach to visualization, generic regarding both the source model, and the kind and content of the visualization. ELVIZ applies model-driven engineering techniques both to transform arbitrary source models into the desired visualization models, and to generate said model transformations from a query-based mapping of source model concepts to visualization concepts. This cleanly decouples source and visualization meta-models, allowing to reuse and combine standard visualizations for various source models. The ELVIZ approach is applied to scenarios from software visualization in software evolution and measuring energy consumption of mobile applications, using different kinds of visualizations.