Since broadband network connections are becoming ubiquitous, people expect access to multimedia content anywhere anytime. This new demand results in a need to create and develop new, powerful devices for multimedia consumption. The new devices, each having their set of network and terminal capabilities, allow transparent access to multimedia and therefore open the path to transparent mobility o...

OBJECTIVE To compare the functional capabilities being offered by commercial ambulatory electronic prescribing systems with a set of expert panel recommendations. DESIGN A descriptive field study of ten commercially available ambulatory electronic prescribing systems, each of which had established a significant market presence. Data were collected from vendors by telephone interview and at si...

The designation “fault tolerant software” has been used for techniques ranging from roll-back and retry to N-version programming, from data mirroring to functional redundancy. If the term is to be meaningful, qualifying definitions are required. This paper attempts to provide these by analyzing the capabilities of representative software fault tolerance techniques described in prior literature ...

Abstract The new challenges related to the monitoring of Earth’s shape and motion have led global geodetic observing system set more stringent requirements on precision stability terrestrial reference frame (TRF). achievement this ambitious goal depends improvement space geodesy techniques, satellite laser ranging (SLR) in particular, being main instrument for TRF realization. In work, we study...

Existing capabilities in laser ranging, optical interferometry and metrology, in combination with precision frequency standards, atom-based quantum sensors, and drag-free technologies, are critical for the space-based tests of fundamental physics; as a result, of the recent progress in these disciplines, the entire area is poised for major advances. Thus, accurate ranging to the Moon and Mars w...

Ultra-wideband (UWB) radio is a new carrierless communication scheme using impulses and is a candidate technology for future communication and ranging applications. In this paper, we consider the problem of node localizing in ad-hoc networks ,in which positioning algorithm only exploits the high precision ranging capabilities offered by UWB and does not rely on GPS. A Time-of-Arrival (ToA) base...