For 2-dimensional B-mode ultrasound images, we propose an image enhancement algorithm based on a multi-resolution approach. In the proposed algorithm, we perform the directional filtering and noise reducing procedures from the coarse to fine resolution images that are obtained from the wavelet-transformed data. For directional filtering, the structural feature at each pixel is examined through ...

This paper documents emotion as integral to stakeholders’ sense making of a key organizational artifact, demonstrating that emotion toward artifacts blends into emotion toward the organization. Multiple stakeholders were interviewed about an artifact of a large public transportation organization. Sense making of the artifact is shown to involve emotion in interpretations that consider three dim...

As artifacts are designed, knowledge is accumulated gradually and — as this knowledge is organized and reused — designs and design processes are continually refined. An understanding of the nature and growth of design knowledge and its reuse is essential for implementing better design systems and effective design practices. To develop such an understanding, we introduce artifact theory as an in...

this study investigates the detection of the drowsiness state for a future application such as in the reduction ofthe road traffic accidents. the electroencephalography(eeg), electrooculography (eog), driving quality (dq), and karolinska sleepiness scale (kss) data of 7 male during approximately 20 hours of sleep deprivation were recorded. to reduce the eye blink artifact, an automatic mechanis...

normal 0 false false false en-us x-none fa background: electroencephalography (eeg) has vital and significant applications in different medical fields and is used for the primary evaluation of neurological disorders. hence, having easy access to suitable and useful signal is very important. artifacts are undesirable confusions which are generally originated from inevitable human activities such...

Ventricular tachycardia is a life-threatening condition. ECG artifact caused by the 4to 6-Hz rest tremor of Parkinson disease (PD) can mimic a wide complex ventricular tachycardia (figure). Misinterpretation of ECG artifact can have grave consequences, including cardiac catheterization, administration of antiarrhythmics, and placement of automated implantable cardioverter-defibrillators.1 Tremo...

Let $kgeq 1$ be an integer, and $G=(V,E)$ be a finite and simplegraph. The closed neighborhood $N_G[e]$ of an edge $e$ in a graph$G$ is the set consisting of $e$ and all edges having a commonend-vertex with $e$. A signed Roman edge $k$-dominating function(SREkDF) on a graph $G$ is a function $f:E rightarrow{-1,1,2}$ satisfying the conditions that (i) for every edge $e$of $G$, $sum _{xin N[e]} f...