This paper discusses the introduction of pseudolites (ground-based GPS-like signal transmitters) in existing integrated GPS/INS systems in order to provide higher availability, integrity and accuracy in a local area. Even though integrated GPS/INS systems can overcome inherent drawbacks of each component system (line-ofsight requirement for GPS, and INS errors that grow with time), performance ...

In this paper, we describe a field experiment of an autonomous mobile system to navigate users and to estimate the self-position indoors, where it is impossible to receive a GPS signal. Many users utilize positional information systems of GPS. However, because positional information computed using GPS signal is available only in the locations with satellite signal reception, it is difficult to ...

For the Generalized Plane Stress (GPS) problem in linear elasticity, we obtain an optimal stability estimate of logarithmic type for inverse determining smooth cavities inside a thin isotropic cylinder from single boundary measurement traction and displacement. The result is obtained by reformulating GPS as Kirchhoff–Love plate-like terms Airy function, using strong unique continuation at plate...

GPS is a widely used satellite navigation system. By design, there is no provision for real time integrity information within the Standard Positioning Service (SPS) which is available to the civilian community. However, in safety critical sectors like aviation, stringent integrity performance requirements must be met. This can be achieved using the GIC (GPS Integrity Channel) or RAIM (Receiver ...

BACKGROUND In Australia, GPs are central to managing individuals with chronic disease. Due to the influence of lifestyle behaviour on chronic disease health outcomes, GPs may counsel an individual about nutrition to assist the individual to improve their nutrition behaviour. Patients with a positive regard for their health care are more likely to adhere to lifestyle changes which have been reco...

OBJECTIVES To describe the role patient expectations play in general practitioners (GPs) antibiotic prescribing for upper respiratory tract infections (URTI). METHODS Concurrent explanatory mixed methods approach using a cross-sectional survey and semistructured interviews. SETTINGS Primary care GPs in Australia. PARTICIPANTS 584 GPs (response rate of 23.6%) completed the cross-sectional ...

BACKGROUND Sexually transmitted infections (STI) care in the Netherlands is primarily provided by general practitioners (GPs) and specialized STI centers. STI surveillance is based on data from STI centers, which show increasing numbers of clients. Data from a GP morbidity surveillance network were used to investigate the distribution in the provision of STI care and the usefulness of GP data i...

BACKGROUND Knowledge of how children with cancer present in general practice is sparse. Timely referral from general practice is important to ensure early diagnosis. AIM To investigate the presenting symptoms and GPs' interpretations of symptoms of children with cancer. DESIGN AND SETTING A Danish nationwide population-based study including children (<15 years) with an incident cancer diag...

GPS technology, in particular real-time kinematic (RTK) GPS, has matured to the stage where it has become another tool for the professional surveyor. Commercial products offer user-friendly hardware/software and suggest techniques that can improve productivity at a high accuracy. Government services such as SCIMS in NSW and AUSPOS (Geoscience Australia) support improved GPS positioning and surv...