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Computer Networks

Computer Networks

This edition reflects the latest networking technologies with a special emphasis on wireless networking, including 802.11, 802.16, Bluetooth, and 3G cellular, paired with fixed-network coverage of ADSL, Internet over cable, gigabit Ethernet, MPLS, and peer-to-peer networks. It incorporates new coverage on 3G mobile phone networks, Fiber to the Home, RFID, delay-tolerant networks, and 802.11 security, in addition to expanded material on Internet routing, multicasting, congestion control, quality of service, real-time transport, and content distribution.

Global Age-friendly Cities

The guide is aimed primarily at urban planners, but older citizens can use it to monitor progress towards more age-friendly cities. At its heart is a checklist of age-friendly features. For example, an age-friendly city has sufficient public benches that are well-situated, well-maintained and safe, as well as sufficient public toilets that are clean, secure, accessible by people with disabilities and well-indicated. Other key features of an age-friendly city include: well-maintained and well-lit sidewalks; public buildings that are fully accessible to people with disabilities; city bus drivers who wait until older people are seated before starting off and priority seating on buses; enough reserved parking spots for people with disabilities; housing integrated in the community that accommodates changing needs and abilities as people grow older; friendly, personalized service and information instead of automated answering services; easy-to-read written information in plain language; public and commercial services and stores in neighbourhoods close to where people live, rather than concentrated outside the city; and a civic culture that respects and includes older persons.