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DiFac ontology In this page some definitions about the project are explained. Artificial Intelligence: The attempt to mimic and automate human cognitive skills through rules and knowledge representation techniques (e.g., understanding visual images, recognizing speech and written text, solving problems, making medical diagnoses, heuristic knowledge, etc.). Artificial Reality: Introduced by arts and computer visualization scholar Myron Krueger in the mid-1970s to describe his computer-generated responsive environments. Krueger has emphasized the non-intrusive (Second - Person VR) systems that track people with pattern recognition techniques and display them and the surround on projection systems (see CAVE). Augmented Reality: This uses transparent displays worn as glasses on which data can be projected. This allows someone to repair a real piece of equipment, for example, and have the needed virtual data displayed on the glasses while walking about in the real world. Avatar: digital representation of a human being Cave: A VR using projection devices on the walls and ceiling to give the illusion of immersion. Collaboration: the process of individuals or organizations sharing resources and responsibilities jointly to plan, implement, and evaluate programs to achieve common goals. Demo Scenario: The application of a Digital Activity to specific industrial needs and requirements. Digital Factory: a rich virtualized environment representing a variety of factory activities which facilitates the sharing of factory resources, manufacturing information and knowledge and helps with the simulation of collaborative design, planning, production and management among different participants and departments. Discrete Event Simulation (DES): In discrete event simulation, the operation of a system is represented as a chronological sequence of events. Each event occurs at an instant in time and marks a change of state in the system. In DiFac the processes in manufacturing systems are modelled with discrete event simulation software. Environment: A computer-generated model that can be experienced from the "inside" as if it were a place. Ergonomics: Ergonomics and Human Factors are both synonymous terms for the theory and practice of learning about human characteristics and capabilities, and then using that understanding to improve people’s interaction with the things they use and with the environments in which they do so. Human factors: Ergonomics and Human Factors are synonymous terms for the theory and practice of learning about human characteristics and capabilities, and then using that understanding to improve people’s interaction with the things they use and with the environments in which they do so. Live Simulation: a simulation involving real people operating real systems. Mixed Reality (MR): A continuum defined as a combination of the real environment (as perceived by humans) and a virtual environment (created by computer). In this continuum, one goes from reality alone to Augmented Reality to Augmented Virtuality (displaying real objects in a computer-generated world) to pure VR (See P. Milgram 1994). Metaphor (MR): In a virtual environment the user should be able to operate within this world. Human interface metaphors are tools which allow the users to interact in intuitive way with the virtual environment, for example it allow selecting or manipulating objects. Presence: A defining characteristic of a good VR system, a feeling of being there, immersed in the environment, able to interact with other objects there. The Perceptual illusion of non-mediation. Virtual Prototyping: The use of VR for design and evaluation of new models. Virtual Reality (VR): An immersive, interactive simulation of realistic or imaginary environments. (Jaron Lanier). With VR, a human operator can perceive and interact with numerical data in a virtual world by means of computerized systems. Virtual Environment (VE): Realistic simulations of interactive scenes. Another acceptation of Virtual Environments is the sets of technological and software material (VR or AR devices, dedicated computers or hardware, dedicated libraries and software) which allow to develop any VR or AR application. Download the DiFac Glossary |
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