Handling qualities requirements for control configured vehicles

The potential effects of fly by wire and control configured vehicle concepts on flying qualities are considered. Failure mode probabilities and consequences, controllability, and dynamics of highly augmented aircraft are among the factors discussed in terms of design criteria

Reframing safety: An analysis of perceptions of cycle safety clothing

This article contributes to debates around cycle safety clothing, specifically helmets and high-visibility clothing. In England such items are widely promoted in safety campaigns and in broader cycling publicity, particularly for children. However, the impact of this approach on cycling safety and cycling uptake is unclear and contested. This article uses a combined analysis of three sets of qualitative interview data to explore talk about cycle helmets and high-visibility clothing. A thematic analysis involved coding all references to such safety clothing, and within that coding meanings, experiences, interactions, and links to other safety equipment. Reported use of safety clothing was strongly associated with perceived threat from motor vehicles, but accompanied by scepticism about effectiveness. Many interviewees felt and/or exerted social pressure to wear a helmet, and, to a lesser extent, high-visibility clothing. Analysis identified a widespread dislike of safety clothing, sometimes linked to cycling less. We found evidence of resistance to social pressure, expressed in complaints about inconvenience, discomfort (helmets), and personal appearance. More interdisciplinary research is needed to explore the complex relationships between cycling safety, the promotion of safety clothing, and cycling uptake. However, our findings suggest that, policy-makers and practitioners should carefully consider how promoting safety clothing might impact cycling uptake and experiences. Policy goals of increasing cycling and making it more 'normal' and subjectively safer might imply reducing or even avoiding the use of such accessories in everyday utility cycling contexts.The Changing Commutes project was funded by the Economic and Social Research Council, Grant number ES/K004549/1. The projects from which the interviews come were funded as detailed in the appendix. The work was undertaken under the auspices of the Centre for Diet and Activity Research (CEDAR), a UKCRC Public Health Research Centre of Excellence which is funded by the British Heart Foundation, Cancer Research UK, Economic and Social Research Council, Medical Research Council, the National Institute for Health Research, and the Wellcome Trust.This is the author accepted manuscript. The final version is available from Elsevier via http://dx.doi.org/10.1016/j.tranpol.2015.05.00

A cohort study of duplex Doppler examinations of the carotid artery in primary open angle glaucoma

Objectives To explore the possibility of pathological change in the common carotid artery at the bifurcation and in the internal carotid artery beyond the bifurcation which could contribute to a reduced diastolic pressure as observed in primary open angle glaucoma. Design Duplex ultrasonic examinations of carotid bifurcations were conducted on 80 patients. Carotid artery defects were allocated into three types: no demonstrable flow defects, internal carotid artery abnormalities and disease in the carotid bulb. Setting Bristol Royal Infirmary Vascular Laboratory. Participants Eighty patients (mean age 69.6 years) providing a total of 160 sides to the analysis. Main outcome measures An estimated central retinal artery pressure, intraocular pressure and field loss were recorded for each side measured. Results Doppler investigations revealed significant levels of pathological change in the internal carotid distinct from changes at the carotid bulb. The disease revealed in the internal carotid artery was significantly associated with intraocular pressure (p = 0.032), with an effect small to medium in magnitude. The Q2 measure, derived from mean arterial pressure and intraocular pressure, was also substantively associated with disease in the internal carotid artery. Both intraocular pressure and the Q2 measure effectively discriminated between groups, with field loss providing rather less discriminating capability. There was a strong trend towards a higher intraocular pressures and a greater visual field loss with internal carotid artery disease. Conclusions Pathological changes in the extra cranial carotid artery in primary open angle glaucoma exceed those in the arteries classified as normal. The presence of disease specifically in the internal carotid artery emphasised the need for a mechanism for the evaluation of the internal carotid apart from the carotid bulb. A basis for clarifying the presence of an ischaemic zone is proposed

How to Beat the Boss: Game Workers Unite in the UK

This article provides an overview of the growth of game worker organising in Britain. These workers have not previously been organised in a trade union, but over the last 2 years, they have developed a campaign to unionise their sector and launched a legal trade union branch. This is a powerful example of so-called ‘greenfield’ organising, beyond the reach of existing trade unions and with workers who have not previously been members. The article provides an outline of the industry, the launch of the Game Workers Unite international network, the growth of the division in Britain as well as their formation as a branch of the Independent Workers’ Union of Great Britain. The aim is to draw out lessons for both the videogames industry, as well as other non-unionised industries, showing how the traditions of trade unionism can be translated and developed in new contexts

From imagery to ecology: Leveraging time series of all available Landsat observations to map and monitor ecosystem state and dynamics

https://zslpublications.onlinelibrary.wiley.com/doi/full/10.1002/rse2.24Published versio

Pest-predator spatial relationships in winter rape: implications for integrated crop management

Douglas Warner, Les J Allen-Williams, Andrew W Ferguson, and Ingrid H Williams, 'Pest–predator spatial relationships in winter rape: implications for integrated crop management', Pest Management Science, Vol. 56 (11): 977-982, November 2000, doi: 10.1002/1526-4998(200011)56:113.0.CO;2-U. Copyright © 2000 Society of Chemical IndustryThe brassica pod midge (Dasineura brassicae) is an important and widespread pest of winter and spring oilseed rape throughout Europe. Pods infested by D brassicae larvae split prematurely, releasing seeds, and the larvae drop to the soil into which they burrow to pupate. At this stage in its lifecycle D brassicae is potentially vulnerable to predation by carabid beetles foraging on the soil surface. This is the first study in the UK to focus on carabid beetles as predators of D brassicae in the oilseed rape crop. The spatio-temporal distributions of larvae of D brassicae dropping to the soil from the crop canopy and of adult carabid beetles active on the soil surface were analysed in two consecutive years. Insect samples were collected from spatially referenced sampling points across each crop. Counts of insects were mapped and analysed, and the degree of spatial association between predator and prey determined using Spatial Analysis by Distance Indices (SADIE). Carabid species abundant and active during peak drop of first generation D brassicae larvae included Agonum dorsale, Amara similata, Harpalus rufipes and Nebria brevicollis. The larvae of D brassicae had a marked edge distribution within the crop. SADIE analysis revealed significant spatial association between larvae of D brassicae and adult H rufipes (P <0.05) in 1998, but not with adults of A dorsale, A similata or N brevicollis. In 1999, there was strong spatial association only between larvae of D brassicae and adult A dorsale (P <0.01). Aggregation of N brevicollis adults occurred in some areas of greatest D brassicae larval counts in 1999, but overall spatial association was not signi®cant. The distributions are discussed in terms of their relevance to integrated crop management (ICM) strategies and spatial targeting of insecticides.Peer reviewe

Impacts of active travel interventions on travel behaviour and health: Results from a five-year longitudinal travel survey in Outer London

Introduction This paper analyses six years' data from the People and Places longitudinal study. The study examines travel behaviour impacts of major investments in active travel infrastructure in three Outer London boroughs (the ‘mini-Hollands programme’). Methods A controlled longitudinal analysis was used to compare changes in active travel in intervention and control groups, with three levels of intervention group (mini-Holland borough but no local intervention; active travel infrastructure but no low traffic neighbourhood; low traffic neighbourhood, usually also with proximity to active travel infrastructure). Finally, the article estimates the 20-year health economic benefit from uptake of active travel, using the average point estimates across all waves for both the mini-Holland programme as a whole and in the most intensively treated areas. Results At all waves, living in an area with mini-Holland interventions was consistently associated with increased duration of past-week active travel, compared with the control group. Changes in active travel behaviour were largest and had the strongest evidence for those living in low traffic neighbourhoods. Most of the increase was in time spent walking, although the strongest evidence of increased participation was for cycling. There was also evidence of decline in car ownership and/or use, although this was weaker and seen convincingly only in the low traffic neighbourhood areas. The 20-year health economic benefit from the mini-Holland areas was calculated at £1,056 m, from a programme cost of around £100 m. The most effective interventions (low traffic neighbourhoods) provide a twenty-year per-person physical-activity related benefit of £4800 compared to a per-person cost of £28–35 (LTNs implemented during 2020 as Covid-19 emergency interventions) or £112 (higher-cost LTNs with more features like greening and crossing improvements). Conclusions Active travel interventions provided high value for money when comparing health economic benefits from physical activity to costs of scheme implementation, particularly low traffic neighbourhoods

A simulation study of Texas hold 'em poker: what Taylor Swift understands and James Bond doesn't

Recent years have seen a large increase in the popularity of Texas hold ’em poker. It is now the most commonly played variant of the game, both in casinos and through online platforms. In this paper, we present a simulation study for games of Texas hold ’em with between two and 23 players. From these simulations, we estimate the probabilities of each player having been dealt the winning hand. These probabilities are calculated conditional on both partial information (that is, the player only having knowledge of his/her cards) and also on fuller information (that is, the true probabilities of each player winning given knowledge of the cards dealt to each player). Where possible, our estimates are compared to exact analytic results and are shown to have converged to three significant figures. With these results, we assess the poker strategies described in two recent pieces of popular culture. In comparing the ideas expressed in Taylor Swift’s song, New Romantics, and the betting patterns employed by James Bond in the 2006 film, Casino Royale, we conclude that Ms Swift demonstrates a greater understanding of the true probabilities of winning a game of Texas hold ’em poker. doi:10.1017/S144618111800015