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...

Susceptibility artifact from platinum coil packs impairs the visibility of perianeurysmal soft tissues at conventional 3D time-of-flight MR angiography. These artifacts limit the evaluation for residual-recurrent aneurysm and parent vessel stenosis. Reducing the echo time can decrease the artifact and improve perianeurysmal visualization. The purpose of this study was to assess quantitatively t...

This poster summary describes research that investigates the use of mobile technologies to support young children’s collaborative artifact creation in outdoor environments. Collaboration while creating a knowledge artifact is an important part of children’s learning. Key aspects of supporting this process outdoors are discussed. An approach is outlined that uses mobile computers for artifact cr...

Different programming languages can be involved in the implementation of a single software application. In these software applications, source code of one programming language interacts with code of a different language. By refactoring an artifact of one programming language, the interaction of this artifact with an artifact written in another programming language may break. We present a study ...

The diffusion weighted images acquired with the multiband sequence or the Lifespan protocols shows a type of slice distortion artifact. We find that this artifact is caused by the eddy currents, which can be induced by the diffusion gradient associated with either current DW image or the previous DW images. The artifact can be corrected by further tuning the compensation circuit in the MR hardw...