if both reference station (rs) and navigational device in differential global positioning system (dgps) receive signals from the same satellite, rs position components error (rpce) can be used to compensate for navigational device error. this research used hybrid method for rpce prediction which was collected by a low-cost gps receiver. it is a combination of genetic algorithm (ga) computing an...

Research on how older drivers react to natural challenges in the driving environment is relevant for both the research on mental workload and that on age-related compensation. Older adults (M age=70.8 years) were tested in a driving simulator to assess the impact of three driving challenges: a visibility challenge (clear day, fog), a traffic density challenge (low density, high density) and a n...

Displayless interface technology provides speech-based access to computer applications for which visual access is not possible. These applications are increasingly prevalent, especially in situations requiring mobility, such as navigational applications. To ensure the successful deployment of this technology however, many human factors issues must be addressed. In particular, its nonvisual natu...

Recently, a basic pattern of coast seaway system networking has been established in China. As a result, a large number of precautionary areas will be gradually established. Because of the high frequency of ships’ encounters and accidents, these precautionary areas have been a weak but important facet of ships’ routeing. Navigational Traffic Conflict Technique (NTCT) was introduced to quantitati...

Virtual environment navigation can be improved through the use of a navigational aid. In this study two different navigational aids, one active aid and one passive aid, were tested. An eye-tracking apparatus was used to collect fixation data on each navigational aid, in addition to task performance data and user preference data. It was hypothesized that participants using the passive navigation...

This study develops and validates a novel patient-specific navigational template for total knee arthroplasty (TKA). A total of 70 patients who underwent TKA were randomized and divided into conventional method group and navigational template group. In the navigational template group, the patient-specific navigational templates were designed and used intraoperatively to assist 35 patients with k...