75 research outputs found

    Exploring Die and Punch-Making Out of Scrap Brass

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    This study seeks to expose the making of dies and punches using local technology and materials available to goldsmiths and silversmiths in Ghana. Making of dies and punches is an art which has been in existence for a long time. Currently, it is practised with much complexity and tremendous improvement and the technology is associated more closely with industrial engineering than with handicrafts. Dies and punches are metal matrices which are used for stamping metals either in intaglio or cameo form. In Ghana, the majority of goldsmiths and silversmiths do not use this method to convert their original designs into jewellery, in part because they have little knowledge of it. The technique for production is sand casting using scrap brass. Studio-based practice and descriptive research methods were employed in this study. It was evident in the research that local studio technology supports the uses of scrap brass for making dies and punches. The study recommends that goldsmiths and silversmiths should use studio-based practice to fabricate basic tools such as dies and punches to increase the spectrum of jewellery designs produced. Keywords: Dies, punches, brass and sand castin

    Relationship of depression screening in cardiometabolic disease with vascular events and mortality: findings from a large primary care cohort with 4 years follow-up

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    Aims: Benefits of routine depression screening for cardiometabolic disease patients remain unclear. We examined the association between depression screening and all-cause mortality and vascular events in cardiometabolic disease patients. Methods and results: 125 143 patients with cardiometabolic diseases (coronary heart disease, diabetes or previous stroke) in the UK participated in primary care chronic disease management in 2008/09, which included depression screening using the Hospital Anxiety and Depression Score. 10 670 receiving depression treatment exempted, 35 537 screened, while 78 936 not screened. We studied all-cause mortality and vascular events at 4 years, by electronic data linkage of 124 414 patients (99.4%) on primary care registers to hospital discharge and mortality records and used Cox proportional hazards on matched data using propensity score. Mean age for the screened and not screened population was 69 years (standard deviation—SD 11.9) and 67 years (SD 14.3), respectively; 58% (20 658) of the screened population were men and 65.3% (22 726) were socioeconomically deprived, compared with 54.2% (42 727) and 67.4% (51 686), respectively, in the not screened population. The screened population had lower all-cause mortality (Hazard Ratio—HR 0.89) and vascular events (HR 0.85) in the matched data of N = 21 893 patients each in the screened and the unscreened groups. Conclusion: Depression screening was associated with a reduction in all-cause mortality and vascular events in patients with cardiometabolic diseases. The uptake of screening was poor for unknown reasons. Reverse causality and confounding by disease severity and quality of care are important possible limitations. Further research to determine reproducibility and explore underlying mechanisms is merited

    Reporting methodological search filter performance comparisons : a literature review

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    © 2014 The authors. Health Information and Libraries Journal © 2014 Health Libraries Journal.Peer reviewedPostprin

    Malware attack predictive analytics in a cyber supply chain context using machine learning

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    Due to the invincibility nature of cyber attacks on the cyber supply chain (CSC), and the cascading effects ofmalware infections, we use machine learning to predictattacks. As organizations have become more reliant on CSC systems for business continuity, so are the increase invulnerabilities and the threat landscapes. Some traditionalapproach to detecting and defending malware attack haslargely been antimalware or antivirus software such as spam filters, firewall, and IDS/IPS. These tools largelysucceed, however, as threat actors get more intelligent, theyare able to circumvent and affect nodes on systems which then propagates. In our previous work, we characterizedthreat actor activities, including presumed intent and historically observed behaviour, for the purpose of ascertaining the current threats that could be exploited. Inthis paper, we use ML techniques to learn dataset and predict which CSC nodes have detection or no detection. The purpose is to predict which modes are venerable to cyberattacks and for predicting future trends. Todemonstrate the applicability of our approach, we used adataset from Microsoft Malware Prediction website. Further, an ensemble is used to link Logistic Regression, and Decision Tree and SVM algorithms in Majority Votingand run on the training data and then use 10-fold crossvalidation to test the parameter estimation, accurate results and predictions. The results show that ML algorithms in Decision Trees methods can be used in cyber supply chainpredict analytics to detect and predict future cyber attacktrends

    Choosing and using methodological search filters : searchers' views

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    © 2014 The authors. Health Information and Libraries Journal © 2014 Health Libraries Group.Peer reviewedPostprin

    Avocado Pear as a Source of Inspiration for the Design of a Model Truck as a Desk Organiser

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    This publication seeks to explore and design a model truck with a concept idea development that will serve as a desk organizer. The automobile selected is a semi-truck that has a sleeper. The sleeper is what serves as a resting place for drivers during long journeys. This truck is best suited for the concept because of the sleeper to convey all necessary compartments to accommodate office supplies. Observation of most desk organizers found on the desk of some general offices are containers that have simple shapes like cylinders, boxes where items are placed. These organizers do not add any aesthetic appeal to the office since it's very simple and the items placed in them are not singled out thereby making accessing them inconvenient. There is also no distinct design that will make them stand out and also welcome the visitor. This research explores various design ideas of combining the truck concept into a desk organizer. The descriptive research and studio-based methods based on the qualitative research approach were employed. The researchers rather employed the use of an inanimate object being Avocado or Pear fruit as the design inspiration that guided all design experiments. The Latin word for Pear is 'Pirum', which means to 'bear fruit'. Every nation's income is partly dependent on the money generated from the movement of goods and services. Therefore, for a nation to bear fruit economically, the import and export of goods and services must be very effective. Trucks are very instrumental in conveying these goods and services across the country. The design is meant to serve as a wheel of academia where all necessary items needed at offices are well organized and conveyed for knowledge acquisition. To explore and produce further unique objects of product design that can serve a completely different purpose aside its original purpose or its aesthetic appearance and value was recommended. It was also recommended that there should be a form of collaboration with other departments to produce interesting results. There should be a collaboration between the Metal Product Design Section and the Engineering Section to produce works of art where the engineers introduce their technological concepts into the design ideas and concepts of the Metal Product Designer. Keywords: model, truck, sentinel, desk organizer, avocado pear DOI: 10.7176/ADS/86-05 Publication date:October 31st 202

    Systematic reviews of and integrated report on the quantitative, qualitative and economic evidence base for the management of obesity in men

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    <b>Background</b><p></p> Obesity increases the risk of many serious illnesses such as coronary heart disease, type 2 diabetes and osteoarthritis. More men than women are overweight or obese in the UK but men are less likely to perceive their weight as a problem and less likely to engage with weight-loss services.<p></p> <b>Objective</b><p></p> The aim of this study was to systematically review evidence-based management strategies for treating obesity in men and investigate how to engage men in obesity services by integrating the quantitative, qualitative and health economic evidence base.<p></p> <b>Data sources</b><p></p> Electronic databases including MEDLINE, EMBASE, PsycINFO, the Cochrane Central Register of Controlled Trials, the Database of Abstracts of Reviews of Effects and the NHS Economic Evaluation Database were searched from inception to January 2012, with a limited update search in July 2012. Subject-specific websites, reference lists and professional health-care and commercial organisations were also consulted.<p></p> <b>Review methods</b><p></p> Six systematic reviews were conducted to consider the clinical effectiveness, cost-effectiveness and qualitative evidence on interventions for treating obesity in men, and men in contrast to women, and the effectiveness of interventions to engage men in their weight reduction. Randomised controlled trials (RCTs) with follow-up data of at least 1 year, or any study design and length of follow-up for UK studies, were included. Qualitative and mixed-method studies linked to RCTs and non-randomised intervention studies, and UK-based, men-only qualitative studies not linked to interventions were included. One reviewer extracted data from the included studies and a second reviewer checked data for omissions or inaccuracies. Two reviewers carried out quality assessment. We undertook meta-analysis of quantitative data and a realist approach to integrating the qualitative and quantitative evidence synthesis.<p></p> <b>Results</b><p></p> From a total of 12,764 titles reviewed, 33 RCTs with 12 linked reports, 24 non-randomised reports, five economic evaluations with two linked reports, and 22 qualitative studies were included. Men were more likely than women to benefit if physical activity was part of a weight-loss programme. Reducing diets tended to produce more favourable weight loss than physical activity alone (mean weight change after 1 year from a reducing diet compared with an exercise programme -3.2 kg, 95% CI -4.8 kg to -1.6 kg). The type of reducing diet did not affect long-term weight loss. A reducing diet plus physical activity and behaviour change gave the most effective results. Low-fat reducing diets, some with meal replacements, combined with physical activity and behaviour change training gave the most effective long-term weight change in men [-5.2 kg (standard error 0.2 kg) after 4 years]. Such trials may prevent type 2 diabetes in men and improve erectile dysfunction. Although fewer men joined weight-loss programmes, once recruited they were less likely to drop out than women (difference 11%, 95% CI 8% to 14%). The perception of having a health problem (e.g. being defined as obese by a health professional), the impact of weight loss on health problems and desire to improve personal appearance without looking too thin were motivators for weight loss amongst men. The key components differ from those found for women, with men preferring more factual information on how to lose weight and more emphasis on physical activity programmes. Interventions delivered in social settings were preferred to those delivered in health-care settings. Group-based programmes showed benefits by facilitating support for men with similar health problems, and some individual tailoring of advice assisted weight loss in some studies. Generally, men preferred interventions that were individualised, fact-based and flexible, which used business-like language and which included simple to understand information. Preferences for men-only versus mixed-sex weight-loss group programmes were divided. In terms of context, programmes which were cited in a sporting context where participants have a strong sense of affiliation showed low drop out rates and high satisfaction. Although some men preferred weight-loss programmes delivered in an NHS context, the evidence comparing NHS and commercial programmes for men was unclear. The effect of family and friends on participants in weight-loss programmes was inconsistent in the evidence reviewed - benefits were shown in some cases, but the social role of food in maintaining relationships may also act as a barrier to weight loss. Evidence on the economics of managing obesity in men was limited and heterogeneous.<p></p> <b>Limitations</b><p></p> The main limitations were the limited quantity and quality of the evidence base and narrow outcome reporting, particularly for men from disadvantaged and minority groups. Few of the studies were undertaken in the UK.<p></p> <b>Conclusions</b><p></p> Weight reduction for men is best achieved and maintained with the combination of a reducing diet, physical activity advice or a physical activity programme, and behaviour change techniques. Tailoring interventions and settings for men may enhance effectiveness, though further research is needed to better understand the influence of context and content. Future studies should include cost-effectiveness analyses in the UK setting

    Re: Sex-based subgroup differences in randomized controlled trials: empirical evidence from Cochrane meta-analyses.

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    This is an online-posted "rapid response" comment to the article published with DOI 10.1136/bmj.i5826The rapid response itself does not have a DOI, only the URL (https://www.bmj.com/content/355/bmj.i5826/rr
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