background: in order to assign appropriate planning target volume (ptv) margins, each centre should measure the patient positioning deviations for their set-up techniques. at the royal marsden hospital, uk, a conformal shell (cast) system is used when a stereotactic frame is not suitable. in this paper, we report on a series of measurements with the aim of obtaining the systematic and random co...

High-precision positioning scheme, an important part of the indoor navigation system, can be implemented using an ultra-wide band (UWB) based ranging system. Recently, solutions for precise positioning in dense multi-path and nonline-of-sight (NLOS) conditions have attracted a lot of attention in literature. On the other hand, it is expected that Waveform Division Multiple Access (WDMA) technol...

Wi-Fi fingerprinting is widely used for indoor positioning and indoor navigation due to the ubiquity of wireless networks, high proliferation of Wi-Fi-enabled mobile devices, and its reasonable positioning accuracy. The assumption is that the position can be estimated based on the received signal strength intensity from multiple wireless access points at a given point. The positioning accuracy,...

this workshop features, (live) demonstration of sonographic technique of the upper extremity joints; patient positioning; transducer choices, operation and position on the anatomic landmarks; optimal evaluation of the anatomic structures in shoulder, elbow and wrist; hopefully on thursday or friday.

This paper presents a studyof the impact of reference node locations on the accuracy of the indoor positioning systems. In particular, we analyze the localization accuracy of the RSSI database mapping techniques, deploying on the IEEE 802.15.4 wireless networks. The results show that the locations of the reference nodes used in the positioning systems affect the signal propagation characteristi...

The use of positioning systems is an important but problematic aspect of ‘context aware’ applications. Through focusing on location-based games, we introduce the approach of self-reported positioning in which players explicitly and implicitly reveal their positions by manipulating electronic maps. A study of a game that piloted this approach demonstrates that self-reported positioning can be a ...

This paper proposes a cooperative real-time positioning system to solve both indoor and outdoor location tracking problem for disaster aid, we conduct a detailed overview of pre-existing indoor positioning systems, give architecture of cooperative positioning system, and introduce the least square method to improve accuracy of time difference of arrival (TDOA) positioning algorithm. Meanwhile, ...

in the recent years, targeted therapy of the neoplastic diseases is a current strategy used by oncologists. hence, design and discovery of novel targeted anticancer therapeutics is an interesting topic in the current research of medicinal chemistry. a new series of 1,3,4-thiadiazole derivatives were prepared and their anticancer activity was assessed against pc3, sknmc and ht29 cell lines by ap...

The positioning system based on RSSI is extremely affected by the multipath transmission medium, the signal transmission and shadow. Even changing the angle of the antenna is likely to affect the ranging accuracy. In order to solve the problems above, this paper proposes an indoor optimal positioning algorithm based on Wi-Fi signal strength. It introduces positioning evaluation function, using ...

Positioning in learning networks is a process that assists learners in finding a starting point and an efficient route through the network that will foster competence building. In the past we explored computational approaches to positioning that are based on the contents of the learning network and the behavior of those participating in it, more or less ignoring different efforts to stimulate p...