In this paper three perspectives are presented on defining the general notion of technical artifacts in formal ontologies. These perspectives share two intuitions: that technical artifacts are objects that exist by human intervention; and that technical artifacts are to be contrasted to natural entities. Yet the perspectives are different in the way they spell out these intuitions: the relevant...

introduction: nowadays, imaging of the myocardial perfusion (mpi) using the single photon emission tomography (spet) in the diagnosis of coronary artery disease, especially myocardial ischemia, is of great importance. in contrast to the coronary artery angiography, mpi is non-invasive, less expensive and more physiological. unfortunately, this image is affected by the some artifacts. these arti...

Artifacts generated by biophysical sources (such as muscles, eyes, and heart) often hamper the use of EEG for the study of brain functions in basic research and applied settings. These artifacts share frequency overlap with the EEG, making frequency filtering inappropriate for their removal. Spatial decomposition methods, such as principal and independent components analysis, have been employed...

this research study investigated the development of listening proficiency level by the aid of different media- tional artifacts in systemic theoretical instruction (sti). the study considered whether exposing learners to different types and various numbers of mediating artefacts would increase their awareness towards listen- ing concepts after two months, and consequently promote their listenin...

The electrocardiogram (ECG) is used for diagnosis of heart diseases. In a few circumstances the recorded ECG signals are corrupted by various noise signals caused by power line interference, base line wander, electrode movement, muscular movement (EMG) etc. These noise signals are known as artifacts. These artifacts mislead the diagnosis of heart which is not desired. To avoid this problem caus...

We readily use artifacts in theorizing and accounting for epistemic work. Yet the agency characteristics of artifacts and notably their relations to their creators (the subjects) are less understood as agency is more socially privileged than artifactually focused. Rather than understanding the ways artifacts are appropriated as utility objects, we examine the ebb and flow of agency to account f...