Using scientifically grounded foundations is one of the fundamental principles in design science research in order to strengthen research rigor. However, issues around using knowledge which does not undoubtedly belong to these foundations are hardly discussed. The paper addresses one of these issues by suggesting a tool called TAVIAS. The approach supports researchers conducting design science ...

PURPOSE To optimize the multi CTA (MSCTA) protocol, the influence of pitch, kilovoltage peak (kVp), reconstruction algorithm, type, and orientation of the clip on clip-induced artifacts was investigated in a phantom study. Also, the influence of kVp, concentration of contrast material, and clip orientation in clipped patients was studied. METHODS A phantom containing a clip was scanned with v...

Normal development appears to involve a progressive restriction in developmental potential. However, recent evidence suggests that this progressive restriction is not irreversible and can be altered to reveal novel phenotypic potentials of stem, progenitor, and even differentiated cells. While some of these results can be explained by the presence of contaminating cell populations, persistence ...

Artifact-centric modeling is a promising approach for modeling business processes based on the so-called business artifacts key entities driving the company’s operations and whose lifecycles define the overall business process. While artifact-centric modeling shows significant advantages, the overwhelming majority of existing process mining methods cannot be applied (directly) as they are tailo...

In this paper we initiate a study on comparing artifactcentric workflow schemas, in terms of the ability of one schema to emulate the possible behaviors of another schema. Artifact-centric workflows are centered around “business artifacts”, which contain both a data schema, which can hold all of the data about a key business entity as it passes through a workflow, along with a lifecycle schema,...

IMPROVE adjusts for positive sampling artifacts by subtracting nylon filter field blank values and quartz afterfilter values from measured ion and carbon concentrations, respectively. Artifacts have been observed to vary substantially among filter manufacturing lots, especially for nylon filters. Sulfate and nitrate artifact corrections are currently less than 10% of the measured values, but or...

In a well designed software system, units of related functionality are organized into modules and classes, which are in turn arranged into inheritance trees, package hierarchies, components, libraries, frameworks, and services. The trade-offs between simplicity versus flexibility and power are carefully considered, and interfaces are designed that expose the key functional properties of a compo...

When we interact with artifacts we are closely coupled at many temporal levels, both cognitively and physically. We think on paper in diagrams or words, we play with toys, we work with tools, and we live our lives largely within structured collections of artifacts. Artifacts often act like prostheses. After a day of working with nails and screws it must seem to a carpenter that his hands are ha...

An important aspect of image and print quality is the existence of artifacts, such as compression or print artifacts. A general perceptual masking model, that describes the perceptual severity of artifacts on general background, could have been used to extract specific artifact detectors. However, currently general models are not mature enough to provide print artifact detectors for commercial ...

BACKGROUND The application of advanced 3T MRI imaging techniques to study recovery after subarachnoid hemorrhage (SAH) is complicated by the presence of image artifacts produced by implanted aneurysm clips. To characterize the effect of these artifacts on image quality, we sought to: 1) quantify extent of image artifact in SAH patients with implanted aneurysm clips across a range of MR sequence...