Related Concepts – Access control – Access control policy – Security kernel Definition A reference monitor concept defines a set of design requirements on a reference validation mechanism, which enforces an access control policy over subjects' (e.g., processes and users) ability to perform operations (e.g., read and write) on objects (e.g., files and sockets) on a system. – The reference valida...

Eye movements were monitored as participants followed spoken instructions to manipulate one of four objects pictured on a computer screen. Target words occurred in utterance-medial (e.g., Put the cap next to the square) or utterance-Wnal position (e.g., Now click on the cap). Displays consisted of the target picture (e.g., a cap), a monosyllabic competitor picture (e.g., a cat), a polysyllabic ...

Writing mostly is a solitary activity. Right now, I sit in front of a computer screen. On my desk are piles of paper; notes for what I want to say; unfinished projects waiting to be attended to; books on shelves nearby to be consulted. I need to be alone when I write. Whether writing on a computer, on a typewriter or by hand, most writers I know prefer a secluded place without distractions from...

This study was designed to test whether associations between visual icons on a computer screen and auditory icons (environmental sounds that have a direct association with an object) or earcons (synthetic sounds that have no direct association with an object) are easier to learn. In addition, localization of sound presentation relative to the position of the icons on the screen was tested. Resu...

This paper describes an adaptive brain-body interface (BBI) that was designed to cater for traumatic brain injured personnel to use the computer screen as a means for communicating, recreating and controlling their environment. The paper describes how the initial interface was developed and optimised for this group of personnel. It also deals with the challenges involved in designing an adaptiv...

Multi-monitor systems are becoming increasingly popular as a way for users to expand their display surface to facilitate multitasking. However, users may have difficulty accessing user interface elements on the borders of the displays, accidentally crossing over to neighbouring displays. We present a smart pseudo-haptic technique to enhance boundary widgets in multi-monitor systems. Our techniq...

The following article refers to a performed presentation, from the Double Dialogues Conference, Art & Pain, at The University of Melbourne, May 10, 2003. The presentation involved an audio-visual configuration in which I was speaking whilst simultaneously vision-mixing ‘live’ images from a camera and images from a pre-recorded videotape. The pre-recorded images were from the creative video prac...

In order to analyze the functions of the hippocampus in the primate, and to advance the understanding of amnesia, the activity of 994 single hippocampal neurons in the monkey was analyzed during the performance of a task known to be affected by hippocampal damage in which both an object, and its position in space, must be remembered. The serial multiple object-place memory task required a memor...

Several papers have documented that when subjects play with standard laboratory endowments they make less self-interested choices then when they use money they have either earned through a laboratory task or brought from outside the lab. In the context of a charitable giving experiment we decompose common "house money" e ects into two components: the tangibility of cash in hand relative to mone...

Natural Human-Computer Interface requires integration of realistic audio and visual information for perception and display. An example of such an interface is an animated talking head displayed on the computer screen in the form of a human-like computer agent. This system converts text to acoustic speech with synchronized animation of mouth movements. The talking head is based on a generic 3D h...