The Global Positioning System (GPS) is highly reliable and accurate when used outdoors. However, in indoor environments, due to the additional signal loss incurred by the walls of the buildings, the detection and decoding of GPS signals becomes a difficult task. As a solution to the indoor area coverage problem, an indoor positioning system based on GPS repeaters and a modified positioning algo...

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In this paper, we would propose a novel mechanism of surgical manipulator, which assists the surgeon in precise positioning and handling of surgical devices, like biopsy needle, endscope, in MR-guided surgery. This mechanism can transmit 3 translational and 3 rotational motion from the outside to the inside of MR imaging area using leverage and parallelepiped mechanism. Such a remote actuation ...

An anodic stripping voltammetry instrument has been developed by ESA, Inc., Chelmsford, MA, in conjunction with CDC. This instrument provides a prompt, cost-effective technique to monitor lead exposures for pediatric screening. Although this instrument has only been used with children whose blood lead levels are significantly lower than in exposed adults, its capability to analyze blood quickly...

This paper presents an evaluation of Bluetooth positioning in a general positioning platform. Proceeding the evaluation a Bluetooth based positioning system was implemented in order to complement the theoretical evaluation with em-

On May 3rd 2000, one day after the United States Department of Defense disabled Selective Availability Scrambling on its Global Positioning System (GPS) satellites, a container with a logbook was placed outside of Portland, Oregon and its GPS coordinates were posted to an online satellite newsgroup. By May 6th, 2000 the cache had been visited twice and logged once. This was the beginning of Geo...

• The combination of signals planned to be available for civil use from the U.S.'s Global Positioning System (GPS) and the former U.S.S.R.'s GLONASS system offers the promise of an accurate and economical sole-means navigation system for civil aviation. An FAA-sponsored program at Lincoln Laboratory has examined the technical issues associated with the integrated use of the two autonomous syste...

Abstract: This paper discusses the development and trial of a Wireless Exhibition Guide that employs mobile, wireless, and indoor positioning technologies to introduce sophisticated information, communication, and navigation exhibition services, thus, leveraging the value proposition of exhibition stakeholders. Results indicate user acceptance of the system and provide guidance towards the futu...