Older age is associated with changes in the brain, including the medial temporal lobe, which may result in mild spatial navigation deficits, especially in allocentric navigation. The aim of the study was to characterize the profile of real-space allocentric (world-centered, hippocampus-dependent) and egocentric (body-centered, parietal lobe dependent) navigation and learning in young vs. older ...

This technical report supplements the paper entitled ’Conceptual Navigation Analysis: a device and platform independent navigation specification’. It presents how a navigation analysis model can be integrated in two well-known user-centered conceptual modeling approaches, namely OO-H and UWE. Our aim with this integration process is to illustrate how other user-oriented hypermedia modeling prop...

Navigation represents the fundamental interaction technique in 3D virtual environments (3D VEs) as it enables the users to explore the 3D world and to interact with its objects. Efficient navigation strategies and techniques are required, which take account of the users and their goals and avoid problems of general navigation methods, such as “getting-lost” situations and confusing view configu...

From the three existing dimensions content objects, navigation and presentation of web pages, the navigation dimension is analysed. It consists of macro, meso and micro navigation. A conceptual approach to model and implement the macro navigation structure of web sites is presented. We start by enhancing a function decomposition diagram to model the macro navigation structure. The resulting gra...

We evaluated two variations of a keyboard-only web navigation technique. “ID Navigation” assigns a unique, incremental identifier (ID) to each interactive web page element. The ID is displayed as a tiny label beside each element when an activation key is pressed. One variation used numeric IDs, the other used a set of IDs limited to four sequential keys each associated with a fixed finger. The ...

Three-axis-magnetometers (TAMs) are widely utilized as a key component of attitude determination subsystems and as such are considered the corner stone of navigation for low Earth orbiting (LEO) space systems. Precise geomagnetic-based navigation demands accurate calibration of the magnetometers. In this regard, a complete online calibration process of TAM is developed in the current research t...

The AGV (automated guided vehicle) was introduced in UK in 1953 for transporting. But nowadays, due to their high efficiency, flexibility, reliability, safety and system scalability, they are used in various application in industries. In brief, the AGV robot is a system which typically made up of vehicle chassis, embedded controller, motors, drivers, navigation and collision avoidance sensors, ...

Recent studies have shown that navigation impairment is a common complaint after brain injury. Effective training programmes aiming to improve navigation ability in neurological patients are, however, scarce. The few reported programmes are merely focused on recalling specific routes rather than encouraging brain-damaged patients to use an alternative navigation strategy, applicable to any rout...