With the rapid development in hardware and software of wireless communications, applications of real-time positioning systems have been widely used; among them the Global Positioning System is the most popular [1]. However, the satellite signal is obstructed by the sheltering effect of the building and becomes too weak to be applicable for indoor positioning. Instead, the wireless sensor networ...

Nowadays, with the rapid develpopment of wireless network and multimedia service, indoor wireless positioning technology is developing very fast. At this point, many new technology emerges. People's demand and requirement for positioning and navigation gradually improve a lot, particularly for complex indoor environment. Indoor positioning is often limited to time and position precision and com...

Recently, the fingerprint-based wireless local area network (WLAN) positioning has gained significant interest. A probability distribution-aided indoor positioning algorithm based on the affinity propagation clustering is proposed. Different from the conventional fingerprint-based WLAN positioning algorithms, the paper first utilizes the affinity propagation clustering to minimize the searching...

Radio frequency identification (RFID) technology has become one of the most prosperous positioning technologies due to its advantages in non-contact and non-line-of-sight sensing. Most of the current positioning applications using RFID were implemented by setting a few RFID readers in some known locations, which were only suitable for the indoor or small area of outdoor positioning. This paper ...

Most of the developed pedestrian navigators rely on the use of satellite positioning (GNSS), sometimes also in combination with other sensors and positioning methods. In the project “Ubiquitous Cartography for Pedestrian Navigation” (UCPNAVI) we have integrated active Radio Frequency Identification (RFID) in combination with GNSS and Inertial Navigation Systems (INS) for continuous positioning....

background and aim. knowledge of the common radiographic errors and their prevention could prevent imposing redundant radiation, time and money to patient and the dentist. the aim of this study was to assess the common radiographic errors on panoramic radiographs in a radiology department. materials and methods. 250 panoramic radiographs (100 male and 150 female; mean age, 24.3) taken at the de...