Heat-transfer measurements on a concave hemispherical nose shape with unsteady-flow effects at Mach numbers of 1.98 and 4.95

Heat transfer on concave hemispherical nose shape with unsteady flow effec

Improving estuary models by reducing uncertainties associated with river flows

© 2018 The Authors To mitigate against future changes to estuaries such as water quality, catchment and estuary models can be coupled to simulate the transport of harmful pathogenic viruses, pollutants and nutrients from their terrestrial sources, through the estuary and to the coast. To predict future changes to estuaries, daily mean river flow projections are typically used. We show that this approach cannot resolve higher frequency discharge events that have large impacts to estuarine dilution, contamination and recovery for two contrasting estuaries. We therefore characterise sub-daily scale flow variability and propagate this through an estuary model to provide robust estimates of impacts for the future. River flow data (35-year records at 15-min sampling) were used to characterise variabilities in storm hydrograph shapes and simulate the estuarine response. In particular, we modelled a fast-responding catchment-estuary system (Conwy, UK), where the natural variability in hydrograph shapes generated large variability in estuarine circulation that was not captured when using daily-averaged river forcing. In the extreme, the freshwater plume from a ‘flash’ flood (lasting < 12 h) was underestimated by up to 100% – and the response to nutrient loading was underestimated further still. A model of a slower-responding system (Humber, UK), where hydrographs typically last 2–4 days, showed less variability in estuarine circulation and good approximation with daily-averaged flow forcing. Our result has implications for entire system impact modelling; when we determine future changes to estuaries, some systems will need higher resolution future river flow estimates

Particle swarming of sensor correction filters

Reducing the impact of seismic activity on the motion of suspended optics is essential for the operation of ground-based gravitational wave detectors. During periods of increased seismic activity, low-frequency ground translation and tilt cause the Advanced LIGO observatories to lose 'lock', reducing their duty cycles. This paper applies modern global-optimisation algorithms to aid in the design of the 'sensor correction' filter, used in the control of the active platforms. It is shown that a particle swarm algorithm that minimises a cost-function approximating the differential root mean squared velocity between platforms can produce control filters that perform better across most frequencies in the control bandwidth than those currently installed. These tests were conducted using training data from the LIGO Hanford Observatory seismic instruments and simulations of the Horizontal Access Module Internal Seismic Isolation platforms. These results show that new methods of producing control filters are ready for use at LIGO. The filters were implemented at LIGO's Hanford Observatory, and use the resulting data to refine the cost function. © 2020 IOP Publishing Ltd Printed in the U

Effects of Optaflexx Fed in Combination with MGA on Feedlot Heifer Performance

A commercial feedlot experiment was conducted using 1,807 heifers to evaluate the effects of Optaflexx fed in combination with MGA on finishing heifer performance. In heifers receiving MGA throughout the entire 126-143 day feeding period, feeding Optaflexx for the last 31-38 days increased ADG and hot carcass weight compared to heifers fed MGA but not Optaflexx. Heifers fed MGA and Optaflexx had increased DMI, improved feed efficiency and increased final live weight. Carcass quality measurements were not influenced by treatment

Final Protocol and Statistical Analysis Plan for the SNAP Trial - a randomised, double-blind, placebo-controlled trial of nicotine replacement therapy in pregnancy

This NIHR HTA-funded smoking, nicotine and pregnancy (SNAP) trial investigated whether or not nicotine replacement therapy (NRT) is effective, cost-effective and safe when used for smoking cessation by pregnant women. We randomised 1050 women who were between 12 and 24 weeks pregnant as they attended hospital for ante-natal ultrasound scans. Women received either nicotine or placebo transdermal patches with behavioural support. The primary outcome measure was biochemically-validated, self-reported, prolonged and total abstinence from smoking between a quit date (defined before randomisation and set within 2 weeks of this) and delivery. At 6 months after childbirth self-reported maternal smoking status was ascertained and 2 years after childbirth, self-reported maternal smoking status and the behaviour, cognitive development and respiratory symptoms of children born in the trial were compared in both groups. This repository contains the final approved version of the protocol plus the statistical analysis plan (SAP) for both outcomes at delivery and following the 2 year follow up period after birth

Transgressing the moral economy: Wheelerism and management of the nationalised coal industry in Scotland

This article illuminates the links between managerial style and political economy in post-1945 Britain, and explores the origins of the 1984–1985 miners' strike, by examining in longer historical context the abrasive attitudes and policies of Albert Wheeler, Scottish Area Director of the National Coal Board (NCB). Wheeler built on an earlier emphasis on production and economic criteria, and his micro-management reflected pre-existing centralising tendencies in the industries. But he was innovative in one crucial aspect, transgressing the moral economy of the Scottish coalfield, which emphasised the value of economic security and changes by joint industrial agreement

Aquilegia, Vol. 19 No. 3, July-September 1995: Newsletter of the Colorado Native Plant Society

https://epublications.regis.edu/aquilegia/1076/thumbnail.jp

The three-peat challenge : business as usual, responsible agriculture, and conservation and restoration as management trajectories in global peatlands

FundingThis work was supported by the Natural Environment Research Council [grant numbers NE/X015238/1; NE/ V006444/1; NE/V018760/1], the Royal Geographical Society (RBEA 02.21), the Royal Society (RGS\R2\202229), and Growing Health (BB/X010953/1) BBSRC Institute Strategic Programme.Peer reviewedPublisher PD

Challenging the negative images of Haiti at a pre-visit stage using visual online learning materials

Post-conflict destinations can struggle to attract visitors because of their negative image. Research addressing this remains limited. The same can be said about the education of tourists. This research paper contributes to the literature in both areas as it examines the proposition that the education of tourists at a pre-visit stage using online, game-based material could be effective in challenging the negative perception of these destinations. From a destination management point of view, this paper offers an alternative to existing promotional material as there is little evidence at the moment that existing strategies are effective. From a conceptual point of view, this paper contributes to the very limited academic research in Gamification by adding the fact that Gamification can be a very efficient tryvertising tool if using subtle and implicit marketing elements