Lithographically printed voltaic cells - A feasibility study

It has been shown that circuit interconnects and various passive components can be fabricated on a variety of flexible substrates using the offset lithographic process. This paper reports on a feasibility study investigating the manufacture of voltaic cells deposited via offset lithography

Development and characterisation of lithographically printed voltaic cells

This paper reports progress in the fabrication of voltaic cells and batteries via offset lithographic printing. Successful design and manufacture of lithographically printed voltaic cells would facilitate the integration of printed passive components, interconnects and display elements for disposable electronics in low-volume, low weight circuits and systems. The conductive lithographic film (CLF) printing process was developed by Brunel University to fabricate circuit interconnect and various passive components at high speed and low cost. A feasibility study, investigating printed cells based on zinc-carbon electrochemistry, is described. This has resulted in the production of a printed battery able to power a microcontroller-driven LED display system for more than three hours. Further work seeks to improve cell capacity, address manufacturing process issues, and characterise the structures in more detail

Technological discontinuities, outsiders and social capital: a case study from Formula 1

Purpose – The purpose of this paper is to examine how and why outsiders, rather than incumbents, are able to take advantage of technological discontinuities. Design/ methodology/approach – The paper employs a case study of a single innovation that transformed the technology of Formula 1 motor racing. Findings – The findings show how social capital made up of ‘weak ties’ in the form of informal personal networks, enabled an outsider to successfully make the leap to a new technological regime. Practical implications – The findings show that where new product development involves a shift to new technologies, social capital can have an important part to play. Originality/value – It is widely accepted that radical innovations are often competence destroying, making it difficult for incumbents to make the transition to a new technology. The findings show how the social capital of outsiders can place them at a particular advantage in utilizing new technologies

Power-by-the-hour: the role of technology in reshaping business strategy at Rolls-Royce

There is a recognised trend of manufacturing companies offering not only products, but services and even complete solutions to business problems. Research has highlighted economic, market demand and competitiveness factors as responsible for the re-shaping of business strategies that this has involved. This study analyses the extent to which another factor, technology, has been a significant factor in the switch from product oriented to service oriented strategies. A case study of the aero engine manufacturer Rolls-Royce is used to analyse the impact of technology, which is found to have led manufacturers to re-shape their business strategies. The study finds that developments in one technology in particular, namely digital electronics, have been a powerful enabling factor facilitating the implementation of service strategies. This provided original equipment manufacturers (OEMs) like Rolls-Royce with a competitive advantage relative to conventional service providers, by enabling them to acquire new knowledge management capabilities

Housing repossessions, evictions and common mental illness in the UK: results from a household panel study

Background: The numbers of housing repossessions and evictions in the UK are increasing. This study investigates whether repossessions and evictions increase the likelihood of common mental illness and examine patterns over time. Methods: Data come from the core longitudinal panel of the British Household Panel Survey (N=12 390) of adults living in private households. Multivariate fixed-effects regression models are used with weighted data. Common mental illness is measured by the 12-item General Health Questionnaire. Results: Housing repossession is associated with an increased risk of common mental illness (adjusted odds ratio 1.61, 95% confidence interval 1.10 to 2.36), whereas eviction from rented property shows no increased risk (0.97, 0.76 to 1.20). The pattern over time shows a clear increase in the years before repossession. Conclusions: Repossession of owned property, although a relatively rare event in the panel, significantly increases the risk of common mental illness immediately after the event. In contrast, eviction from rented property is a more common event but is not associated with an increased risk of common mental illness. This difference in association may be due to losing the security of owned housing and the often transitory nature of the rented housing population

Effects of alcohol and HIV infection on the central nervous system.

Many people at risk for or infected with the human immunodeficiency virus (HIV) are heavy drinkers. Both HIV infection and heavy alcohol use adversely affect the immune system and central nervous system (CNS) function. However, little research has addressed the effects of heavy alcohol use on the severity and progression of HIV disease, including the development of HIV-associated CNS disease. Animal and in-vitro studies suggest that alcohol impairs various aspects of the immune system and increases the susceptibility to HIV infection, but may not accelerate progression of HIV disease. However, heavy alcohol use may interfere with the patient's adherence to antiretroviral treatment regimens. Neuropathological and neuropsychological studies have indicated that certain brain areas are affected by both HIV-infection and chronic alcohol abuse. Magnetic resonance spectroscopy studies of both HIV-positive and HIV-negative people who were either heavy or light drinkers found that chronic alcohol abuse exacerbates some metabolic injury in the brains of HIV-infected people, although this effect may be less pronounced in patients receiving effective antiretroviral therapy