Digital Ecosystem

With the deployment of 2G and 3G cellular networks and WLAN, WiMax world widely, the next generation wireless networks are envisioned as heterogeneous networks with all sorts of wireless networks coexisting. For the diversity of these networks, each network has its in point applications and scenarios. How to fully utilize ubiquitous heterogeneous networks’ potential advantages has become many research personnel’s pursued goals. Vertical handoff among heterogeneous networks and horizontal handoff are important contents of mobility management in mobile communications. Next generation wireless networks have been envisioned with all-IP-based loose-coupled architecture. Vertical handoff decision manner has transformed from network-controled to terminal-controled. Read more »

Wireless sensor network have numerous applications which include area monitoring, environment monitoring, vehicle detection etc. It has wide range of applications and is used to monitor things. It is based on wireless network concept where devices that are spatially distributed are used. These devices are used for monitoring purposes and they monitor conditions like sound, pressure etc. And can be used at different locations. These are popularly used in war fields and were originally developed for that purpose. It is also used for industry purposes these days. In Industries it is used for machine health monitoring, healthcare monitoring etc. It is also effectively used in traffic control. Read more »

From sending wedding invitations to conducting business conferences, today almost every simple to complex task is done through Internet. The numbers of Internet users in every corner of the world have increased exponentially resulting in augmented traffic visiting website. To present visitors with the requested information in least amount of time, organizations have started using the facility of Content Delivery Network. Under this system, copies of data are created and stored on different computers present at different geographical locations. Apparently, the working of CDN seems hassle-free but it is quite complex in the real environment. To make any CDN successful, CDN providers have to take care of various factors which together influence the efficiency of the entire system. Read more »

An artificial neural network (ANN), usually called “neural network” (NN), is a mathematical model or computational model that tries to simulate the structure and/or functional aspects of biological neural networks. It consists of an interconnected group of artificial neurons and processes information using a connectionist approach to computation. In most cases an ANN is an adaptive system that changes its structure based on external or internal information that flows through the network during the learning phase. Neural networks are non-linear statistical data modeling tools. They can be used to model complex relationships between inputs and outputs or to find patterns in data. Read more »

In the world of the Internet, the rapid growth and exponential use of digital medias leads to the emergence of virtual environments namely digital ecosystems composed of multiple and independent entities such as individuals, organizations, services, software and applications sharing one or several missions and focusing on the interactions and inter-relationships among them. The digital ecosystem exhibits self-organizing environments, thanks to the re-combination and evolution of its “digital components”, in which resources provided by each entity are properly conserved, managed and used. The underlying resources mainly comprehend data management, innovative services, computational intelligence and self-organizing platforms. Read more »