Eye movements introduce large artifacts to electroencephalographic recordings (EEG) and thus render data analysis difficult or even impossible. Trials contaminated by eye movement and blink artifacts have to be discarded, hence in standard EEG-paradigms subjects are required to fixate on the screen. To overcome this restriction, several correction methods including regression and blind source s...

This paper discusses how architectural requirements engineering fits into an overall software development process in the concept and definition phases of a project. It defines a reference process identifying the “ideal” artifacts and their interrelationships, describes some key technical activities that are useful for producing these artifacts, and captures some practical experience in commerci...

Many interactive systems today span across a range of interoperable IT artifacts, forming crossmedia systems. They aim at providing pervasive and synergistic support for human activities. This paper reports a three-month-long qualitative field study exploring the use of a crossmedia fitness system to support physical training. The main concern is how the system – through the configuration of it...

A standardized test part can be used to quantitatively evaluate the performance of a machine or process. This document reviews existing test artifacts used to characterize additive manufacturing processes that are reported in the literature. Several aspects of the test artifacts and their use for performance characterization are discussed, including the purposes of the studies, important featur...

In Software Product Line (SPL) engineering [1], while focusing on exploiting the commonality within the products, adequate support must be available for customizing the SPL core in order to derive a particular SPL instance. The more diverse the domain, the harder it is to accomplish this task. This, in some cases, may outweigh the cost of developing the SPL core itself. Therefore, variability m...

Magnetic resonance imaging (MRI) at a field strength of 3 Tesla has become more and more frequently used in recent years. In an increasing number of radiological sites, 3-Tesla MRI now starts to play the same role for clinical imaging that was occupied by 1.5-Tesla systems in the past. Because of physical limitations related to the higher field strength and because of protocols transferred from...

[Context & motivation] Requirements artifacts, like specifications, diagrams, or user stories, are often used to support various activities related to requirements. How well an artifact can support a specific activity depends on the artifact’s nature. For example, a plain text document can be adequate to provide contextual information, but is not well suited in terms of documenting changes. [Qu...

OBJECTIVE The aims of this study were to describe the mechanisms likely to be responsible for color Doppler twinkling artifacts and their associated machine factors and to illustrate the various conditions that cause twinkling artifacts and those pitfalls. METHODS We evaluated various sonographic machine-associated factors that influence artifact appearance and identified various conditions t...

Transcranial electric stimulation (tES) is a promising tool to non-invasively manipulate neuronal activity in the human brain. Several studies have shown behavioral effects of tES, but stimulation artifacts complicate the simultaneous investigation of neural activity with EEG or MEG. Here, we first show for EEG and MEG, that contrary to previous assumptions, artifacts do not simply reflect stim...