This paper presents a new methodology for the deformable object modelling by drawing an analogy between cellular neural network (CNN) and elastic deformation. The potential energy stored in an elastic body as a result of a deformation caused by an external force is propagated among mass points by the non-linear CNN activity. An improved autonomous CNN model is developed for propagating the ener...

Information technology (IT) and communications technologies are promoting new virtual forms of business enterprises based on teleworking. Performance issues relating to organisation form, depend much on the performance and interworking of technology, infrastructure, and working practice. The cellular Green-Team approach as practiced at a heavy engineering Small-to-Medium sized Enterprise (SME) ...

This paper presents a simulation approach to the object-oriented modelling of GSM cellular mobile networks implemented in the GSM CellSim++ simulation tool. Key aspects of this tool include: (i) the modelling of the random nature of radio wave propagation, mobile locations and user calling behaviour; (ii) modelling performance enhancing techniques such as frequency hopping, power control, and a...

Identification of cancer pathways is the central goal in the cancer gene expression data analysis. Data mining refers to the process analyzing huge data in order to find useful pattern. Data classification is the process of identifying common properties among a set of objects and grouping them into different classes. A cellular automaton is a discrete, dynamical system with simple uniformly int...

Recent investigations have shown that cell radius is a much better metric of RF coverage than area reliability. Given the maximum allowable path loss of the radio equipment and assuming a Hata path loss model, cell radius predictions are shown to be a monotonically decreasing function of the desired area reliability. A useful, technology independent nomograph is given that predicts the cell rad...

In third-generation (3G) wireless data networks, providing service to low data-rate users is required for maintaining fairness, but at the cost of reducing the cell’s aggregate throughput. In this paper, we propose the Unified Cellular and Ad-Hoc Network (UCAN) architecture for enhancing cell throughput, while maintaining fairness. In UCAN, a mobile client has both 3G cellular link and IEEE 802...

Today’s mobile customers desire to remain connected anywhere, at any-time and using any device. This phenomenon has encouraged the mobile network operators to build complex network architectures by incorporating new features and extensions, which are harder to manage and operate. In this paper, we propose a novel and simplified architecture for mobile networks. The proposed architecture, which ...

A Virtual Cellular Network (VCN) [1] is a wireless cellular network wherein a single Mobile Station (MS) can be in simultaneous communication with more than one Base Station (BS). This paper presents the implementation of a handover protocol for a virtual cellular network. The proposed handover protocol is used in combination with a link protocol [2] and a multiple-access protocol [3]. The desi...

Recently, major services provided by mobile communications systems are shifting from voice conversations to data communications over the Internet. There is a strong demand for increasing the data transmission rate. However, an important problem arises; larger peak transmit power is required as transmission rate becomes higher. In this paper, a virtual cellular concept is proposed to avoid this ...

What is aging? Mechanistic answers to this question remain elusive despite decades of research. Here, we propose a mathematical model of cellular aging based on a model gene interaction network. Our model network is made of only non-aging components the functionality of gene interactions decrease with a constant mortality rate. Death of a cell occurs in the model when an essential gene loses al...