For engineering applications high precision GPS with survey grade receivers allows positioning in real-time to a centimetre level of precision. Many of the error sources affecting the GPS signal have been significantly removed in order to achieve such high precision. However, one error source that is difficult to mitigate is that of the multipath error. GPS signal multipath occurs when the GPS ...

The GPS antenna is the connecting component between the GPS satellite and the GPS receiver. Its function is to transfer the satellite signal propagation to the receiver with minimum interruption. A satisfactory process is expected to result in an accurate and reliable performance of the GPS receiver. Multipath error is a dominant error source connected with GPS positioning. Mitigation of such e...

BACKGROUND Vagal nerve stimulation (VNS) has been shown to provide a protective effect against ischemia/reperfusion (I/R)-related arrhythmias by preventing the loss of Connexin43 (Cx43). Our previous studies showed that atrial epicardial ganglionated plexus stimulation (GPS) might exert a VNS-like effect on ventricular electrophysiology. OBJECTIVES To investigate whether GPS could preserve Cx...

We present a new approach to remote sensing of water vapor based on the global positioning system (GPS). Geodesists and geophysicists have devised methods for estimating the extent to which signals propagating from GPS satellites to ground-based GPS receivers are delayed by atmospheric water vapor. This delay is parameterized in terms of a time-varying zenith wet delay (ZWD) which is retrieved ...

background: health system research (hsr) is system planning, coordination, monitoring and management of research resources and activities to achieve health and justice. as the main members of the health system, general practitioners (gps) play an important role in access to health care goals. the aim of the present study was to assess knowledge, attitude, and performance of gps in rafsanjan, ir...

NAVSYS High Gain Advanced GPS Receiver (HAGR) uses a digital beam-steering antenna array to provide additional gain in the direction of the GPS satellite signals. This increases the received signal/noise ratio on the satellites tracked and also improves the accuracy of the pseudo-range and carrier-phase observations. The directivity of the digital beams created from the antenna array also reduc...

BACKGROUND In most countries with sickness insurance systems, general practitioners (GPs) play a key role in the sickness-absence process. Previous studies have indicated that GPs experience several tasks and situations related to sickness certification consultations as problematic. The fact that the organization of primary health care and social insurance systems differ between countries may i...

This paper shows a distributed object-oriented architecture to provide GPS data to GIS applications. Data captured in real time by GPS units are sent via radio to the computer. Several sources of this real data in addition to simulated GPS data are distributed in a computer network. These servers of GPS data can be accessed by distributed client applications. A CORBA based infrastructure provid...