The creation of artifacts is one of the factors that make us human. Artifacts contribute to our continual adaptation to the world by permitting better knowledge and control of it. The focus of this chapter is on the role of one specific kind of artifact: sensors. In contrast to our immediate perception …

Students more and more have access to online recordings of the lectures they attend at universities. The volume and length of these recorded lectures however make them difficult to navigate. Research shows that students primarily watch the recorded lectures while preparing for their exams. They do watch …

Anomaly detection is a key factor in the processing of large amounts of sensor data from Wireless Sensor Networks (WSN). Efficient anomaly detection algorithms can be devised performing online node-local computations and reducing communication overhead, thus improving the use of the limited hardware …

The maturing field of Wireless Sensor Networks (WSN) results in long-lived deployments that produce large amounts of sensor data. Lightweight online on-mote processing may improve the usage of their limited resources, such as energy, by transmitting only unexpected sensor data (anomalies). We detect …

This work has: •Examined, compared and evaluated 22 programming languages and environments for parallel computing on multi-core CPUs and GPUs •Chosen to use OpenMP as the standard for multi-core CPU programming and OpenCL for GPU programming •Re-implemented a number of standard and well-known algorithms …

From the thesis: This thesis describes a research project with the goal of creating a reference architecture for big data solutions. Big data is an evolution of the field business intelligence and at the same time a revolution in terms of the business value it can bring to organizations. Cloud computing …

Keyboard and 2D mouse are the commonly used input devices for computers. Unfortunately, these input methods come across as being unituitive when the user has to interact with 3D data. The 2D mouse has 2 degrees of freedom, whereas 3D interaction requires 6 degrees of freedom. To overcome this restriction, …

A lot of research into the use of recorded lectures has been done by using surveys or interviews. We will show that triangulation of multiple data sources is needed. We will discuss how students use recorded lectures according to their self-report and what actual usage of the recorded lectures can be …

The KPN group is a major international telecom and IT company in the Benelux. KPN introduced The New Way of Working (TNWW) in 2008 in its organisation. As a result of TNWW, employees at KPN can be found in different primary office locations, even though they have to work together. To make sure employees …

The ever changing world of Internet has transformed traditional marketing and companies since the start of the World Wide Web. Every day billions of people around the world use the Internet for entertainment, shopping, search, social purposes, and much more. This behaviour is changing the way companies …