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In recent years much attention has been paid to spontaneously formed Ad Hoc networks. These networks can be formed without central management and without the use of the infrastructure the Internet provides. lack of infrastructure support brings difficulties in information location and management. This paper describes Calto, a distributed Self Sufficient Presence System for Autonomous Networks. Cal

A 1.8-GHz CMOS VCO is presented, employing a monolithic transformer as an inductance with voltage-controlled value. The design was implemented in a standard digital 0.6 μm, 2-metal CMOS process and exhibits a 10% tuning range with a 2.7 V supply voltage and a 9 mA supply current. Phase noise measurements show a worst-case phase noise of about -112 dBc/Hz at 3 MHz offset from the carrier

The aim of this study was to analyze the added utility of contrast administration for spine MRI in children with scoliosis. A retrospective review of 663 consecutive contrast-enhanced spine MRI performed in 319 patients as part of the work up of scoliosis in children 2-18 years with clinically suspected or known scoliosis over a seven year period. Those patients with known tumors (13 patients) bei

Location management in cellular networks have been in focus for the research community for a number of years. The current static method of determining location or paging areas has been shown to be sub- optimal and costly for operators. Therefore, much research has been focussed on dynamic schemes, which show great promise in cost optimisation. However, the research has still been focussed on aggre

The cognitive- and neuro-sciences have supposed that the perceptual world of the individual is dominated by vision, followed closely by audition, but that olfaction is merely vestigial. Aslian-speaking communities (Austroasiatic, Malay Peninsula) challenge this view. For the Jahai — a small group of rainforest foragers — odor plays a central role in both culture and language. Jahai ideology revolv

Mobility, quality of service (QoS) support, and multicast routing capability are important requirements for today’s networks. This is a result of the changes in wireless users’ expectations, which favour group-oriented, high-quality, multimedia communication. Ad hoc networks enhanced with QoS multicasting strategies can provide users with these features. This paper defines the building blocks of a

Digital technologies are changing social work practices in profound ways. Today, digital devices are used by social workers in their everyday work; from assessing social benefit applications digitally, writing pre-formatted investigations and using chatrooms in treatment, to holding digital meetings with colleagues and clients. Digital technology is also utilized as a management instrument. Changi