This paper describes the design and training of a recommendation system that helps the user navigate in Second Life (SL), a massively multi-player online environment. Second Life allows users to create a virtual avatar and explore areas built by other users. However, unlike the real world, virtual attractions can be constructed within hours and previous ones often rapidly fall into disuse. With...

Military deployment and distribution responsibilities call for intelligent collaborative tools in support of strategic and operational planning functions involving the sustainment and movement of military forces. The sustainment requirement is generated at the operational level and is dynamic. It is composed of shifting priorities responding to changes in commander’s intent and changes in the o...

The security problem of screen image leakage on a display unit through electromagnetic radiation from several meters away has attracted wide interest by security researchers since van Eck wrote about this problem. To solve the problem, techniques for reducing the S/N ratio of emanating information by signal reduction and noise generation have been proposed as countermeasures. Different from the...

Although recent years have witnessed tremendous progress in 3D immersive display and virtual reality, the corresponding humancomputer interaction (HCI) technologies have lagged behind. Current interfaces involve heavy headsets, datagloves, tethers, and other virtual reality devices, which may deter or distract the user. To fully exploit VR’s potential for visualizing and interacting with comple...

A visionics device creates a pictorial representation of the external scene for the pilot. The ultimate objective of these systems may be to electronically generate a form of Visual Meteorological Conditions (VMC) to eliminate weather or time-of-day as an operational constraint and provide enhancement over actual visual conditions where “eye-limiting” resolution may be a limiting factor. Empiri...

Mobile Augmented Reality Systems (MARS) have the potential to revolutionize the way in which information is provided to users. Virtual information can be directly integrated with the real world surrounding the mobile user, who can interact with it to display related information, to pose and resolve queries, and to collaborate with other users. However, we believe that the benefits of MARS will ...

Nowadays smart mobile devices have enough processing power, memory, storage and always connected wireless communication bandwidth that makes them available for any type of application. Augmented reality (AR) proposes a new type of applications that tries to enhance the real world by superimposing or combining virtual objects or computer generated information with it. In this paper we present a ...

continual medical training has been regarded as necessary case for preserving and promoting skills of graduates of medicine on which basis continual curricula of medical society are being executed in order to promote job knowledge and skills and improve provision of health-therapeutic services in the country. now, after some years of continual curricula commencement, this question about effecti...

We develop a three-dimensional (3D) shipping information system as a case study for the integration of a dynamic flow field and a 3D virtual geographical environment. A 2D hydrodynamic model is formulated to calculate the waterway depth and velocity distribution by using real-time hydrologic monitoring data. The parallel OpenMP computations take 4 min on a 20-core computer. The image-based flow...