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Traffic dependent speed limits have improved the security of highway traffic considerably. However, on highway sections controlled by variable speed limits large oscillations in speed can still be observed. On the basis of traffic data and a macroscopic traffic model, the influence of decentrally controlled speed limits on the states of highway traffic is analyzed. It is shown that local control of...
A methodology for accurately modeling large applications explores the performance of ultrascale systems at different stages in their life cycle, from early design through production use.
Aortic stenosis (AS) is the most common native valve disease. The assessment of its severity is routinely performed using transthoracic 2D echocardiography. In particular, aortic valve area (AVA) is usually assessed by continuity equation, although this measurement relies on geometrical assumptions, or by planimetry on transesophageal echocardiography. Accordingly, the aim of this study was to develop...
The three-dimensional distribution of bone surface and the bone volume fraction (BV/TV) of 110 human vertebral cancellous bone specimens from seven individuals were measured using a three-dimensional radiographic method (microcomputed tomography). The ratios of the three principal projections of bone surface per total volume were found to be relatively constant for specimens examined in this study...
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