Positioning is one of the most fundamental problems in sensor networks: Given the network’s connectivity graph and some additional local information on measured distances and/or angles, the goal is to recover the nodes’ positions. Varying the assumptions regarding the nature and the quality of the measurements, there has been extensive research for both hardness results and practical, distribut...

It is now widely accepted that GPS meets, under ideal operational conditions, all attributes of a ubiquitous positioning system, i.e. accuracy, reliability and availability. However, its performance quickly deteriorates in certain environments, such as indoors or in urban canyons. In such environments, the demand for location based services (LBS) is growing exponentially, mainly because of the ...

Abstract: In many industrial applications like semiconductor production and optical inspection systems, the availability of positioning systems capable to follow trajectory paths in the range of several centimetres, featuring at the same time a nanometre-range precision, is demanding. Pure piezoelectric stages and standard positioning systems with motor and spindle are not able to meet such req...

With ARM7 as the core, this paper discusses a kind of design of vehicle location system. The new mobile vehicle Positioning architecture and working theory of this system is integrated by a lot of hardware modules such as ARM microprocessor LPC2129 as a control unit to combinative with GPS LR9548 and GSM TC35 modules By the hardware/software co-design, the new mobile vehicle Positioning system ...

OBJECTIVE To evaluate the effect on patient outcome of a teaching package for nurses designed to improve the positioning of stroke patients. DESIGN Cluster randomized controlled trial with six-month follow-up. SETTING Ten stroke rehabilitation hospital units located within one UK inner city region. These were randomized to control or intervention group. SUBJECTS A sample of 120 patients a...

Received signal strength-based positioning and tracking of humans is a reliable solution for harsh indoor environments like the longwall tunnels at underground coal mining sites. The mining personnel with radio tags on their body can be tracked along a line of sensing reference nodes. The wired bus backbone for the transmission of all sensor data to a central processing station is the limiting ...

This study investigated the impact of Bluetooth Low Energy devices in advertising/beaconing mode on fingerprint-based indoor positioning schemes. Early experimentation demonstrated that the low bandwidth of BLE signals compared to WiFi is the cause of significant measurement error when coupled with the use of three BLE advertising channels. The physics underlying this behaviour is verified in s...

this research aimed to investigate the effect of brand vision and positioning on brand equity with regard to moderating role of product performance and using descriptive survey research. the population of research was marketing experts of superior brands in iran’s food industry, which chosen 148 sample of those population using stratified sampling method. data collection tool was a questionnair...