Chapter 14 – Emerging Trends, Technologies, and Applications Trends in SW and Service Distribution: Pull Technology – a user states a need before getting information, as when a URL is entered in a Web browser so that the user can go to a certain Web site. Push Technology (Webcasting) – a Web server delivers information to users who have signed up for this service instead of waiting for users to request the information be sent to them. Application Service Providers (ASPs) – provide access to software or services for a fee. Netflix Software as a Service (SaaS) – or on-demand software, is a model for ASPs to deliver software to users for a fee; the software might be for temporary or for long-term use. Steam Virtual Reality: Virtual Reality (VR) – uses computer-generated, three-dimensional images to create the illusion of interaction in a real-world environment. Egocentric environment – the user is totally immersed in the VR world. Exocentric environment – the user is given a “window view.” Data is still rendered in 3D, but users can only view it on screen. They can’t interact with objects, as in an egocentric environment. Cave Automatic Virtual Environment (CAVE) – is a virtual environment consisting of a cube-shaped room in which the walls are rear-projection screens. CAVEs are holographic devices that create, capture, and display images in true 3D form. Virtual World – is a simulated environment designed for users to interact via avatars. Avatar – is a 2D or 3D graphical representation of a person in the virtual world, used in chat rooms and online games. Radio Frequency Identification: Radio Frequency Identification (RFID) – an RFID tag is a small electronic device consisting of a small chip and an antenna. This device provides a unique identification for the card or the object carrying the tag. Biometrics: Current and Future Applications: > ATM, Credit, and debit cards > Network and computer login security > Web page security > Voting > Employee time clocks > Member ID in sport clubs > Airport security and fast check-in > Passports and highly secured government ID cards. > Sporting events > Cell Phones and smart cards Networking Trends: Wireless Fidelity (Wi-Fi) – is a broadband wireless technology. Information can be transmitted over short distances – typically 120 feet indoors and 300 feet outdoors – in the form of radio waves. Worldwide Interoperability for Microwave Access (WiMAX) – is a broadband wireless technology based on the IEEE 802.16 standards. It’s designed for wireless metropolitan area networks and usually has a range of about 30 miles for fixed stations and 3 to 10 miles for mobile stations. Bluetooth – which can be used to create a personal area network (PAN), is a wireless technology for transferring data over short distances (usually within 30 feet) for fixed and mobile devices. Grid Computing – involves combining the processing powers of various computers. With this configuration, users can make use of other computers’ resources to solve problems involving large— scale, complex calculations, such as circuit analysis or mechanical design – problems that a single computer isn’t capable of solving in a timely manner. Utility (on-demand) computing – is similar to the SaaS model and provides IT services on demand. Users pay for computing or storage resources on an as-needed basis, similar to paying for utilities. Cloud Computing – incorporates, under one platform, many recent technologies, including the SaaS model, Web 2.0, grid computing, and utility computing; hence, a variety of resources can be provided to users over the Internet. Business applications are accessed via a Web browser, and data is stored on the providers’ servers. Google Apps Nanotechnology: Nanotechnology – incorporates techniques that involve the structure and composition of materials on a nanoscale. Applications of Nanotechnology: > Energy – reduction of energy consumption, increase in the efficiency of energy production, more environmentally friendly energy systems. > Information and communication – larger and faster storage devices, faster and cheaper computers, display monitors with low energy consumption. > Heavy Industry – aerospace, construction, refineries, vehicle manufacturing.
Pages to are hidden for
"Chapter 14 Notes - DOC"Please download to view full document