Modeling nonlinear vertical components of a GPS time series is critical to separating sources contributing to mass displacements. Improved vertical precision in GPS positioning at stations for velocity fields is key to resolving the mechanism of certain geophysical phenomena. In this paper, we use ensemble empirical mode decomposition (EEMD) to analyze the daily GPS time series at 89 continuous...

While currently numerous existing engineering applications benefit from the global positioning system ~GPS!, it is anticipated that operation of many new, emerging applications ~e.g., applications related to ubiquitous mobile computing! will rely on the information provided by this technology. Depending on the application requirement, GPS data may be collected and post-processed or collected an...

The main purpose of this study is to develop a new Windows-based program that calculates a quality control parameter that shows the quality of Global Positioning System (GPS) observations using GPS data in a Receiver INdependent Exchange (RINEX) format. This new program, Global Positioning System Quality Control (GPSQC), allows general GPS users to easily and intuitively check the quality of GP...

Utilization of global positioning system (GPS) to analyze the movements of machinery during the asphalt paving process is a growing practice. However, the accuracy of GPS measurements is affected by a number of factors that lead to noise in the GPS data. Due to these missing accuracy in the GPS data the asphalt paving professionals have problems interpreting and using the data in their operatio...

BACKGROUND Despite the increasing worldwide use of global positioning system (GPS) telemetry in wildlife research, it has never been tested on any freshwater diving animal or in the peculiar conditions of the riparian habitat, despite this latter being one of the most important habitat types for many animal taxa. Moreover, in most cases, the GPS devices used have been commercial and expensive, ...

The objective of this study was to assess the accuracy of using speed and grade data obtained from a low-cost global positioning system (GPS) receiver to estimate metabolic rate (MR) during level and uphill outdoor walking. Thirty young, healthy adults performed randomized outdoor walking for 6-min periods at 2.0, 3.5, and 5.0 km/h and on three different grades: 1) level walking, 2) uphill walk...

OBJECTIVES A comparison of appraisals made by general practitioners (GPs) in France and occupational physicians (OPs) and insurance physicians (IPs) in the Netherlands with those made by Scandinavian GPs on work capacity in patients with severe subjective health complaints (SHCs). SETTING GPs in France and OPs/IPs in the Netherlands gathered to watch nine authentic video recordings from a Nor...

Monitoring and predicting traffic conditions is of utmost importance for reacting to emergency events in time and for real-time shortest travel-time path computations. Mobile sensors, such as GPS devices and smartphones, are useful for monitoring the urban traffic due to their large coverage and easy deployment. Many researchers have employed such sensed data to model and predict traffic condit...