The rapid and reliable creation of realistic three-dimensional environment models is vital to virtual environment (VE) applications in engineering, mission planning, training simulations, entertainment, or tactical decision making and military operations in battlefield environments. While current sensing and modeling technologies offer useful methods for VE creation and visualization, several s...

The ever-increasing power of computers and hardware rendering systems has, to date, concentrated on creating visually rich and perceptually realistic virtual environment (VE) applications. Comparatively very little effort is expended on the user interaction components of VEs. As a result, VE user interfaces are often poorly designed and are rarely evaluated with users. Although usability engine...

INTRODUCTION The submaximal exercise test (SET), which gives both a measure of exercise tolerance, as well as disease severity, should be a more robust functional and prognostic marker than the six-minute walk test (6MWT). This study aimed to determine the prognostic value of SET as predicted by the validated REVEAL (Registry to Evaluate Early and Long-Term Pulmonary Artery Hypertension Disease...

In one-of-a-kind production industries, different entities join to share complementary competencies to deliver a unique product or service. This is typically through the modus operandi of the virtual enterprise (VE). Information exchange in VE settings has traditionally been through simple file exchange using a person-to-person exchange. This has naturally led to a significant degree of informa...

Statistical features are widely used in radiology for tumor heterogeneity assessment using magnetic resonance (MR) imaging technique. In this paper, feature selection based on decision tree is examined to determine the relevant subset of glioblastoma (GBM) phenotypes in the statistical domain. To discriminate between active tumor (vAT) and edema/invasion (vE) phenotype, we selected the signific...

We consider a set of programs a family when it pays to look at their common aspects before looking at their differences. For commercial software developers the implications are twofold: First, making rational decisions about product-line processes and products requires the ability to answer the question: “Does it pay?” Second, whether or not something pays is ultimately a business (rather than ...