2,018 research outputs found
A Picasso of Perspectives on Formulaic Language
Peer reviewe
Getting Pumped Up: Discoveries and Challenges in Reproducing a Worthington Steam Pump from the USS Monitor
Since 1987, when it was designated as the repository of all artifacts recovered from the wreck of the USS Monitor, The Mariners’ Museum in Newport News, Virginia has been conducting conservation on the objects to preserve them for exhibition and study. Included among the recovered artifacts are two direct-acting steam pumps built by the H.R. Worthington Company in Brooklyn, New York. As with many artifacts within the collection, during the disassembly and conservation treatment of the pumps, material losses due to years of corrosion as well as a structural weakness of some surviving components were revealed. As the conservation of the pumps progressed, discussion on final display led to dialogue on how to visually convey to the public the pumps’ movement without risking damage to fragile components. As a result, conservators started a project in 2009 to create a fully operational replica which would enable visitors to see the pumps in action. The reproduction of the pumps’ components required the use of multiple molding methods, laser scanning, computer aided drafting (CAD), 3-D printing technologies, and several casting techniques. This presentation will discuss the methods and challenges of reproducing a variety of simple and more complex bronze and iron parts by dry-sand casting. The lecture will also discuss what was learned about how the original pump parts were made through identifying marks left on the artifacts from the 1860’s casting process; and finally how that information was used to aid in the molding and casting of newly produced replica patterns
Therapeutic/Expressive Writing and Resilience Promotion for Nurses to Reduce Burnout Syndrome
COVID-19 accelerated the rate in which nurses were unable to maintain resilience and reduce burnout. This evidence-based DNP project obtained data from a therapeutic/expressive writing intervention and group resilience discussion with Women’s Care Center (WCC) nurses to improve resilience acuity and reduce symptoms associated with burnout syndrome. A review of previous studies indicated therapeutic/expressive writing and group resilience discussions have been beneficial in improving resilience and reducing burnout. A demographic and two preintervention surveys were completed by WCC nurses in the hospital relaxation room or skills lab. The Connor-Davidson RISC-25© was used to determine resilience scores for morning and evening shift nurses. The Maslach Burnout Inventory© (MBI) Survey for Medical Personnel was used to assess emotional exhaustion (EE), depersonalization (DP), and personal achievement (PA) in the same groups. Participants (n =20) nurses completed the pre-intervention resilience and burnout surveys. Day and night shift nurses (n= 19) resilience mean average increased after the intervention 2.65 mean score (M = 83.31, SD =9.86) for the Connor-Davidson RISC-25© survey which is in the intermediate range: 50% of the population. The burnout mean for the morning shift nurses, EE (M = 21.88), DP (M = 4.88), and PA (M = 39.27) which indicated moderate burnout for all categories. The burnout means for evening shift nurses, EE (M = 17.33), DP (M = 7.22), and PA (M = 40.00), which fell within the moderate burnout range
Cloud Computing and Virtualization: The “Entrepreneur without Borders” Workbench for 21st Century Enterprise Development
Norbert Weiner, one of the true great minds of the 20thcentury once said “Progress imposes not only new possibilitiesfor the future but new restrictions.” (1) Like Charlie Chaplinbefore him brilliantly exhibited in his marvelous silent film,Modern Times, technology must become our servant and notour master. One of the major complaints we often hear of laterevolves around just how absorbing technology has become interms of consuming our time and energy
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Prevalence of Gastroesophageal Reflux Disease and Proton Pump Inhibitor-Refractory Symptoms
Background & aimsThere are few data on the prevalence of gastroesophageal reflux disease (GERD) in the United States. We performed a population-based study to determine the prevalence of GERD symptoms and persistent GERD symptoms despite use of proton pump inhibitors (PPIs).MethodsWe conducted the National Gastrointestinal Survey in 2015 using MyGiHealth, an app that guides participants through National Institutes of Health gastrointestinal Patient-Reported Outcomes Measurement Information System surveys. Primary outcomes were prevalence of GERD symptoms in the past and persistence of GERD symptoms (heartburn or regurgitation 2 or more days in past week) among participants taking PPIs. Population weights were applied to the data and multivariable regression was used to adjust for confounding.ResultsAmong 71,812 participants, 32,878 (44.1%) reported having had GERD symptoms in the past and 23,039 (30.9%) reported having GERD symptoms in the past week. We also found that 35.1% of those who had experienced GERD symptoms were currently on therapy (55.2% on PPIs, 24.3% on histamine-2 receptor blockers, and 24.4% on antacids). Among 3229 participants taking daily PPIs, 54.1% had persistent GERD symptoms. Younger individuals, women, Latino individuals, and participants with irritable bowel syndrome or Crohn's disease were more likely to have continued symptoms, even when taking PPIs.ConclusionsUsing a population-based survey, we found GERD symptoms to be common: 2 of 5 participants have had GERD symptoms in the past and 1 of 3 had symptoms in the past week. We also found that half of PPI users have persistent symptoms. Given the significant effect of GERD on quality of life, further research and development of new therapies are needed for patients with PPI-refractory GERD symptoms
Possible thermochemical disequilibrium in the atmosphere of the exoplanet GJ 436b
The nearby extrasolar planet GJ 436b--which has been labelled as a 'hot
Neptune'--reveals itself by the dimming of light as it crosses in front of and
behind its parent star as seen from Earth. Respectively known as the primary
transit and secondary eclipse, the former constrains the planet's radius and
mass, and the latter constrains the planet's temperature and, with measurements
at multiple wavelengths, its atmospheric composition. Previous work using
transmission spectroscopy failed to detect the 1.4-\mu m water vapour band,
leaving the planet's atmospheric composition poorly constrained. Here we report
the detection of planetary thermal emission from the dayside of GJ 436b at
multiple infrared wavelengths during the secondary eclipse. The best-fit
compositional models contain a high CO abundance and a substantial methane
(CH4) deficiency relative to thermochemical equilibrium models for the
predicted hydrogen-dominated atmosphere. Moreover, we report the presence of
some H2O and traces of CO2. Because CH4 is expected to be the dominant
carbon-bearing species, disequilibrium processes such as vertical mixing and
polymerization of methane into substances such as ethylene may be required to
explain the hot Neptune's small CH4-to-CO ratio, which is at least 10^5 times
smaller than predicted
IMPACT OF EMISSIONS INFORMATION ON MODE CHOICES IN DUBLIN: A STATED PREFERENCE EXPERIMENT
Abstract The rise of smartphone applications within the transport sector has created new and exciting opportunities to provide users with a wide range of previously unavailable information services. The combination of journey planning applications and carbon calculators, allows for the provision of trip specific information regarding the potential environmental impact of personal transport options. While these applications are readily available in the market place, little in terms of scientific research has been undertaken to examine their influence on users. This paper presents the results of a stated preference experiment examining influence of carbon dioxide emissions information on user mode choice, as part of a survey undertaken in the Greater Dublin Area in November 2012. Acknowledging research findings arising from the field of behavioural economics, this study recognizes that mode choices are also influenced by factors other than the attributes presented to the user. In addition to standard socioeconomic considerations, the influence of the respondents' habitual transport behaviour was incorporated into the multinomial logit model. Moreover, due to the issue of information presentation inherent in smartphone applications, the effect of the respondents' process of information assimilation was examined. Results indicate that, for all non driving modes, emissions play a significant role in the respondents' mode choice, with reduced associated emissions contributing to enhanced mode utility. The inclusion of habitual and information processing variables was found to greatly improve upon the initial model in terms of predictive power. Introduction
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Lifetime cardiovascular management of patients with previous Kawasaki disease.
Kawasaki disease (KD) is an inflammatory disorder of young children, associated with vasculitis of the coronary arteries with subsequent aneurysm formation in up to one-third of untreated patients. Those who develop aneurysms are at life-long risk of coronary thrombosis or the development of stenotic lesions, which may lead to myocardial ischaemia, infarction or death. The incidence of KD is increasing worldwide, and in more economically developed countries, KD is now the most common cause of acquired heart disease in children. However, many clinicians in the UK are unaware of the disorder and its long-term cardiac complications, potentially leading to late diagnosis, delayed treatment and poorer outcomes. Increasing numbers of patients who suffered KD in childhood are transitioning to the care of adult services where there is significantly less awareness and experience of the condition than in paediatric services. The aim of this document is to provide guidance on the long-term management of patients who have vascular complications of KD and guidance on the emergency management of acute coronary complications. Guidance on the management of acute KD is published elsewhere
Telemedicine in the Eastern Cape using VoIP combined with a Store and Forward Approach
Rural areas in South Africa have unique conditions such as remoteness and scarcity of reliable public facilities. Information and Communication Technologies (ICTs) introduced into these areas must be suitable for these conditions. Using a user-centred design approach based on Participatory Design and Action Research, we have developed a telemedicine application for a rural village in the Eastern Cape. This paper describes how we determined the requirements and design for the application and why we chose Voice over Internet Protocol (VoIP) combined with a store and forward approach to achieve our telemedicine goals. We present an overview of the methodology we are using, describe the software application we have developed and mention several challenges we have faced to date. Finally we conclude that VoIP and store and forward technologies are appropriate to the South African rural situation
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