University of Bolton

About: University of Bolton is a education organization based out in Bolton, Manchester, United Kingdom. It is known for research contribution in the topics: Fire retardant & Higher education. The organization has 886 authors who have published 1980 publications receiving 41597 citations. The organization is also known as: Bolton Institute of Higher Education & Bolton Institute.

Parallel design of arithmetic coding

Abstract: The paper presents a parallel algorithm design for real-time implementation of arithmetic coding. The implementation comprises a parallel-processing array arranged in a tree structure. Within each cycle, a group of input symbols can be encoded. This increases the arithmetic coding speed substantially. Details of a fixed-precision algorithm design, its implementation and simulation of its performance are reported.

Mobilization of Genomic Islands of Staphylococcus aureus by Temperate Bacteriophage.

Abstract: The virulence of Staphylococcus aureus, in both human and animal hosts, is largely influenced by the acquisition of mobile genetic elements (MGEs). Most S. aureus strains carry a variety of MGEs, including three genomic islands (νSaα, νSaβ, νSaγ) that are diverse in virulence gene content but conserved within strain lineages. Although the mobilization of pathogenicity islands, phages and plasmids has been well studied, the mobilization of genomic islands is poorly understood. We previously demonstrated the mobilization of νSaβ by the adjacent temperate bacteriophage ϕSaBov from strain RF122. In this study, we demonstrate that ϕSaBov mediates the mobilization of νSaα and νSaγ, which are located remotely from ϕSaBov, mostly to recipient strains belonging to ST151. Phage DNA sequence analysis revealed that chromosomal DNA excision events from RF122 were highly specific to MGEs, suggesting sequence-specific DNA excision and packaging events rather than generalized transduction by a temperate phage. Disruption of the int gene in ϕSaBov did not affect phage DNA excision, packaging, and integration events. However, disruption of the terL gene completely abolished phage DNA packing events, suggesting that the primary function of temperate phage in the transfer of genomic islands is to allow for phage DNA packaging by TerL and that transducing phage particles are the actual vehicle for transfer. These results extend our understanding of the important role of bacteriophage in the horizontal transfer and evolution of genomic islands in S. aureus.

Fuzzy logic control of refrigerant flow

Abstract: Control of refrigerant flow in refrigeration and air-conditioning systems is essential to improve their performance and to prolong their life. The introduction of electronic expansion valve has led to a new way of refrigeration flow control and allowed the exploration of the use of different control techniques. The objective of the paper is to report the application of fuzzy logic to control the refrigerant flow of refrigeration and air-conditioning systems. The work is based on a refrigeration unit and the design of the controller is highlighted. The performance of the fuzzy logic controller is compared with a well known existing commercial controller and it shows that the fuzzy logic controller has achieved better performance.