Developing component-based systems is problematical without understanding potential component dependencies. A significant underlying challenge is making available ways to determine and represent those dependencies and mechanisms to deal with them. This paper discusses issues related to component dependencies and introduces an approach to describe what can happen (in term of actions/dependencies...

Earlier research by the author indicated that although agribusiness was emerging as a key conduit for transfer of research and development outputs and outcomes to end users such as growers, little strategic engagement appears to exist between agribusiness and Research and Development providers (RDCs). The objective of this project was to focus on development of a central point of access to R&D ...

There are several technologies for providing broadband services over wireless and cellular networks. The fundamental one in the evolution from 3G to 4G is probably the High Speed Downlink Packet Access (HSPA) technology. There are many works in the literature tackling the problem of HSPA performance and capacity. Most of the developed techniques involving HSPA capacity are related to the system...

When Bluetooth is used as an interface between mobile devices and network systems, the devices must maintain their connections by handovers between access points. However, handover is not defined by the standard Bluetooth specification. Several handover methods have been proposed, but they take a few seconds for reconnection because of relatively complex inquiry and paging procedures. A handove...

This paper examines some of the key problems users encounter when accessing current generation wireless networks. Using a case study of a hypothetical user, the authors explore the emerging services and the new broadband wireless network technologies necessary to carry them out. This paper analyses the issues associated with an observed trend in the industry that exposes potential changes to th...

Mobile and wireless networks are enabling a myriad of services and applications. For examples, wireless hotspots are so widely deployed that access to the Internet is almost ubiquitous; people can work and play via Internet access no matter whether they are sitting on a terrace, travelling on a train, or flying in a plane. The explosive growth of applications for the current and emerging user s...

Notwithstanding massive injections into broadband infrastructure, large sectors of the world’s population remain without access to the internet. One of the strategies employed by government and the private sector to address the digital divide has been to provide basic computing services and internet access to communities in the form of public access centres (PACs), otherwise known as telecentre...

The study of the 802.11 standard has been very intense for more than a decade now. Several works have striven at understanding its performance, even in the simplest topology of a wireless local area network (WLAN) with a single access point (AP). The present survey is an effort to classify and present the enormous literature on the subject into several important casescenarios, and summarizes th...

Nowadays, a large number of applications characterized by stringent end– to–end requirements are on high demand. The development of Broadband Wireless Access (BWA) should enable the ubiquitous and cost-effective deployment of such applications. The IEEE 802.16 standard is currently one of the promising BWA technology under development. The IEEE 802.16 defines the principles of the Physical and ...