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Progress in micro-electromechanical systems (MEMS) and radio frequency (RF) technology has fostered the development of wireless sensor networks (WSNs). Although WSNs have been successfully applied in built environments, their applications and benefits have not been fully explored in the areas of disaster recovery and rescuing. In this paper, a novel(More)
Gram-negative bacteria secrete virulence factors and assemble fibre structures on their cell surface using specialized secretion systems. Three of these, T2SS, T3SS and T4PS, are characterized by large outer membrane channels formed by proteins called secretins. Usually, a cognate lipoprotein pilot is essential for the assembly of the secretin in the outer(More)
In disaster scenarios, dynamic sensors are often used for localisation in wireless sensor networks (WSNs). However, most of the existing localisation algorithms are designed for the static nodes in WSNs. This paper presents a survey of localisation algorithms in mobile wireless sensor networks (MWSNs): robotics localisation algorithms, Monte Carlo based(More)
Recently, the robot technology research is changing from manufacturing industry to non-manufacturing industry, especially the service industry related to the human life. Assistive robot is a kind of novel service robot. It can not only help the elder and disabled people to rehabilitate their impaired musculoskeletal functions, but also help healthy people(More)
This paper reviews different approaches to node localisation discovery in wireless sensor networks (WSNs) and addresses issues of localisation by describing a variety of localisation techniques and theirs strengths and drawbacks. The overview of the existing algorithms proposed for the improvement of localisation in WSNs is also presented. To understand how(More)
CobK catalyzes the essential reduction of the precorrin ring in the cobalamin biosynthetic pathway. The crystal structure of CobK reveals that the enzyme, despite not having the signature sequence, comprises two Rossmann fold domains which bind coenzyme and substrate respectively. The two parallel β-sheets have swapped their last β-strands giving a novel(More)
It is available to view only. I ABSTRACT Progress in micro-electromechanical systems (MEMS) and radio frequency (RF) technology has fostered the development of wireless sensor networks (WSNs). Different from traditional networks, WSNs are data-centric, self-configuring and self-healing. Although WSNs have been successfully applied in built environments(More)
Conventional perspective cameras is restricted for certain application in computer vision due to the limited fields of view. Omnidirectional camera, on the other hand, has large fields of view, which is hard for human observation and traditional visual algorithm application. Therefore, approaches to unwrap the distorted image into perspective image are(More)
For the first time we demonstrate the topotactic synthesis of a three-dimensional (3D) interconnected network of nanoporous CoP nanowires directly on a Ti substrate (np-CoP NWs/Ti) via low-temperature phosphidation of a Co2(OH)2(CO3)2/Ti precursor and its further use as a highly efficient hydrogen evolution cathode.