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For generalized Reed-Solomon codes, it has been proved [6] that the problem of determining if a received word is a deep hole is co-NP-complete. The reduction relies on the fact that the evaluation set of the code can be exponential in the length of the code – a property that practical codes do not usually possess. In this paper, we first presented a much(More)
BACKGROUND Interactive Health Communication Applications (IHCAs) are computer-based, usually web-based, information packages for patients that combine health information with at least one of social support, decision support, or behaviour change support. These are innovations in health care and their effects on health are uncertain. OBJECTIVES To assess(More)
BACKGROUND As Internet use grows, health interventions are increasingly being delivered online. Pioneering researchers are using the networking potential of the Internet, and several of them have evaluated these interventions. OBJECTIVE The objective was to review the reasons why health interventions have been delivered on the Internet and to reflect on(More)
BACKGROUND Theories are important tools in the social and natural sciences. The methods by which they are derived are rarely described and discussed. Normalization Process Theory explains how new technologies, ways of acting, and ways of working become routinely embedded in everyday practice, and has applications in the study of implementation processes.(More)
BACKGROUND Guidelines for optimizing type 1 diabetes in young people advocate intensive insulin therapy coupled with personal support from the health care team. "Sweet Talk" is a novel intervention designed to support patients between clinic visits using text messages sent to a mobile phone. Scheduled messages are tailored to patient profiles and diabetes(More)
BACKGROUND Sexual health promotion is a major public health challenge; there is huge potential for health promotion via technology such as the Internet. OBJECTIVES To determine effects of interactive computer-based interventions (ICBI) for sexual health promotion, considering cognitive, behavioural, biological and economic outcomes. SEARCH STRATEGY We(More)
'Ecstasy' (3,4-methylenedioxymethamphetamine) induces impaired functioning in the serotonergic system, including the occipital lobe. This study employed the 'tilt aftereffect' paradigm to operationalise the function of orientation-selective neurons among ecstasy consumers and controls as a means of investigating the role of reduced serotonin on visual(More)
BACKGROUND Both doctors and patients may perceive the Internet as a potential challenge to existing therapeutic relationships. Here we examine patients' views of the effect of the Internet on their relationship with doctors. METHODS We ran 8 disease specific focus groups of between 2 and 8 respondents comprising adult patients with diabetes mellitus,(More)
BACKGROUND Attrition from follow-up is a major methodological challenge in randomized trials. Incentives are known to improve response rates in cross-sectional postal and online surveys, yet few studies have investigated whether they can reduce attrition from follow-up in online trials, which are particularly vulnerable to low follow-up rates. OBJECTIVES(More)