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Security is one of the biggest challenges facing organisations in the modern hyper-connected world. A number of theoretical security models are available that provide best practice security guidelines and are widely utilised as a basis to identify and operationalise security requirements. Such models often capture high-level security concepts (e.g., whitelisting, secure configurations, wireless access...
This paper presents a comparison of standard topologies for AC-DC converters within micropower energy harvesting systems. The focus is on low input voltage (< 1 V), low input frequency (< a few kilohertz), ultra-low power consumption (nanowatts to microwatts), and fully integrated inductor-less cold start topologies. These standard topologies are compared in terms of PCE (power conversion efficiency),...
Employing a 8 band k.p solver, the self-consistent band structure of the rectangular IIIV nanowires (NW) has been calculated. It is shown that the strong confinement combined with the band nonparabolicity will considerably change the effective masses and the band gap. The mass tensor elements get heavier than the bulk values and improve the density of state (DOS) and centroid capacitance accordingly,...
This work presents the fabrication and characterization of Palladium-doped Zinc Oxide (Pd-ZnO) thin films for Extended-Gate Field-Effect Transistor (EGFET) pH sensor. The films were fabricated on p-type silicon Si(111) substrates using sol-gel technique. The structure, surface morphology, and electrical properties Pd-ZnO films were studied. The doped ZnO films have uniform, homogenous and free of...
The future mobile network called "5G" is becoming a hot topic. The heterogeneous networks using multi-band "HetNet" is one of the promising candidates which provide more than 1000 times system capacity. Millimeter-wave is expected to be utilized for the pico cell coverage as well as the fronthaul to connect these enhanced RRHs. This paper reviews the antennas and propagation research...
MAX-SAT is a classic NP-hard optimization problem. Many real problems can be easily represented in, or reduced to MAX-SAT, and thus it has many applications. Finding optimum solutions of NP-hard optimization problems using limited computational resources seems infeasible in general. In particular, all known exact algorithms for MAX-SAT require worst-case exponential time, so evolutionary algorithms...
In this paper an exact electromagnetic near-fields expressions for an array of circular loop antennas (CLA) are presented. The technique is based on the spherical wave functions expansion for the free space Green's function. Fields of the uniform current CLAs array and that on the axis of the array, as well as the fields of the so called gate antenna arrangement, are obtained from the general expressions...
The latest increase in mobile data usage and emergence of new applications such as Multimedia Online Gaming (MMOG), mobile TV and streaming contents have motivated advances in wireless broadband systems. Recently, the Long-Term Evolution (LTE) technology, which is based on the Universal Mobile Telecommunications System (UMTS) specifications, joins WiMAX as a competitor to achieve increasing demands...
Quantum Evolutionary Algorithm (QEA) is an optimization algorithm based on the concept of quantum computing and Particle Swarm Optimization (PSO) algorithm is a population based intelligent search technique. Both these techniques have good performance to solve optimization problems. PSEQEA combines the PSO with QEA to improve the performance of QEA and it can solve single objective optimization problem...
This paper describes the implementation of fuzzy based Handwriting Recognition (HR) system in VHDL. Key motivation of the design is to reduce computational complexity and performance enhancement. Fuzzy intelligent technique is used to tackle inherent ambiguities in different handwriting recognition. This system is capable of recognizing handwritten characters such as one segment, distinguish characters...
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