Cycle tourism development in the Peak District National Park, United Kingdom

ABSTRACT Protected areas are at the centre of nature-based tourism, which is increasingly popular across the world. As visitor numbers increase, so does awareness of the harmful effects that large crowds may have on both natural resources and individuals’ recreational experience. This volume considers the challenge of transportation to and within natural and protected areas, the improvement of which has already been recognised as having great potential for mitigating the environmental impacts of ecotourism. While several books have focused considerable attention to the management of protected areas in general, little has been said about the specific issue of sustainable transport, an emerging trend that is already reshaping visitation patterns in natural settings. This book provides current knowledge on issues associated with the transportation of visitors in natural and protected areas, and a comprehensive overview of the technical and strategic options available to tackle these issues. It approaches the subject via three main topics: preferences, or the visitors' attitudes towards transportation; practices, where current approaches are assessed through examples and case-studies of successful experiences and methodologies from around the world; and policies, where suggestions and recommendations are put forward for both local scale strategies and broad-scale regulatory action with global relevance. Contributors include academics in the field of natural resource management and tourism, with extensive experience in protected area management and active partnerships with natural park administrations

Resuscitation-promoting factors possess a lysozyme-like domain

The novel bacterial cytokine family – resuscitation-promoting factors (Rpfs) – share a conserved domain of uncharacterized function. Predicting the structure of this domain suggests that Rpfs possess a lysozyme-like domain. The model highlights the good conservation of residues involved in catalysis and substrate binding. A lysozyme-like function makes sense for this domain in the light of experimental characterization of the biological function of Rpfs

Consistency Conditions for an AdS/MERA Correspondence

The Multi-scale Entanglement Renormalization Ansatz (MERA) is a tensor network that provides an efficient way of variationally estimating the ground state of a critical quantum system. The network geometry resembles a discretization of spatial slices of an AdS spacetime and "geodesics" in the MERA reproduce the Ryu-Takayanagi formula for the entanglement entropy of a boundary region in terms of bulk properties. It has therefore been suggested that there could be an AdS/MERA correspondence, relating states in the Hilbert space of the boundary quantum system to ones defined on the bulk lattice. Here we investigate this proposal and derive necessary conditions for it to apply, using geometric features and entropy inequalities that we expect to hold in the bulk. We show that, perhaps unsurprisingly, the MERA lattice can only describe physics on length scales larger than the AdS radius. Further, using the covariant entropy bound in the bulk, we show that there are no conventional MERA parameters that completely reproduce bulk physics even on super-AdS scales. We suggest modifications or generalizations of this kind of tensor network that may be able to provide a more robust correspondence.Comment: 38 pages, 9 figure

Combining personal with social information facilitates host defences and explains why cuckoos should be secretive.

Individuals often vary defences in response to local predation or parasitism risk. But how should they assess threat levels when it pays their enemies to hide? For common cuckoo hosts, assessing parasitism risk is challenging: cuckoo eggs are mimetic and adult cuckoos are secretive and resemble hawks. Here, we show that egg rejection by reed warblers depends on combining personal and social information of local risk. We presented model cuckoos or controls at a pair's own nest (personal information of an intruder) and/or on a neighbouring territory, to which they were attracted by broadcasts of alarm calls (social information). Rejection of an experimental egg was stimulated only when hosts were alerted by both social and personal information of cuckoos. However, pairs that rejected eggs were not more likely to mob a cuckoo. Therefore, while hosts can assess risk from the sight of a cuckoo, a cuckoo cannot gauge if her egg will be accepted from host mobbing. Our results reveal how hosts respond rapidly to local variation in parasitism, and why it pays cuckoos to be secretive, both to avoid alerting their targets and to limit the spread of social information in the local host neighbourhood.We thank the Natural Environment Research Council (NERC) and Society in Science – Branco Weiss for financial support.This is the final version of the article. It first appeared from Nature Publishing Group via http://dx.doi.org/10.1038/srep1987

Computational modeling of creep-based fatigue as a means of selecting lead-free solder alloys

The primary aim of this investigation was to understand the effect of temperature fluctuations on a number of various solder materials namely SAC105, SAC305, SAC405 and Sn–36Pb–2Ag. To achieve this objective, three different classic joint assemblies (a ball joint, a test specimen joint and finger lead joint) were modeled which provided the foundation for the creep and fatigue behaviors simulation. Anand’s viscoplasticity as a constitutive equation was employed to characterize the behavior of solders numerically under the influence of thermal power cycles (80–150 °C) and thermal shock cycles (−40 to 125 °C). To extend the research outcome for industrial use, two additional research activities were carried out. One of them was to obtain lifetime-predictions of solder joints based on Coffin Manson concept. The other one focused on parameterization to obtain the ideal solder thickness under the consideration of plastic strain and economic benefit

Investigation into the effect of process parameters on microstructural and physical properties of 316L stainless steel parts by selective laser melting

Additive manufacturing by selective laser melting (SLM) was used to investigate the effect of laser energy density on 316L stainless steel properties. Point distance and exposure time were varied and their impact on porosity, surface finish, microstructure, density and hardness, was evaluated. The surface roughness was primarily affected by point distance with increased point distance resulting in increased surface roughness, R a, from 10 to 16 μm. Material hardness reached a maximum of 225 HV at 125 J/mm3 and was related to the material porosity; with increased porosity leading to decreased material hardness. Different types of particle coalescence leading to convex surface features were observed (sometimes referred to as balling); from small ball features at low laser energy density to a mixture of both small and large ball features at high laser energy density. Laser energy density was shown to affect total porosity. The minimum amount of porosity, 0.38 %, was observed at an energy density of 104.52 J/mm3

Techniques and Bio-Medical Applications of Field-Cycling Magnetic Resonance

Non peer reviewedPublisher PD

Optimum take-off angle in the standing long jump

The aim of this study was to identify and explain the optimum projection angle that maximises the distance achieved in a standing long jump. Five physically active males performed maximum-effort jumps over a wide range of take-off angles, and the jumps were recorded and analysed using a 2-D video analysis procedure. The total jump distance achieved was considered as the sum of three component distances (take-off, flight, and landing), and the dependence of each component distance on the take-off angle was systematically investigated. The flight distance was strongly affected by a decrease in the jumper’s take-off speed with increasing take-off angle, and the take-off distance and landing distance steadily decreased with increasing take-off angle due to changes in the jumper’s body configuration. The optimum take-off angle for the jumper was the angle at which the three component distances combined to produce the greatest jump distance. Although the calculated optimum take-off angles (19–27º) were lower than the jumpers’ preferred take-off angles (31–39º), the loss in jump distance through using a sub-optimum take-off angle was relatively small

Workington Travel Survey

The floods of November 20th 2009 destroyed or damaged four of the five bridges across the River Derwent at Workington, severing road and pedestrian access. Papcastle Bridge near Cockermouth, the closest road river crossing which involved a long detour, became a bottleneck with long delays for traffic in both directions. Many agencies worked hard to improve the situation and within ten days a temporary station had been built and a free train shuttle service instigated to make use of the remaining bridge. The army erected a footbridge in early December and provision was made for a shuttle bus between settlements on the north of the river, the new station and the footbridge. Thus, between December and April, there was an unusual situation with car journeys between the north and south of the area necessitating a long detour with considerable delays, while the half-hourly train service was free to use and pedestrian access was relatively easy. Cumbria County Council commissioned the Institute of Transport and Tourism of University of Central Lancashire to research the impact this had made on people’s travel. A household survey gave data on 435 people’s travel patterns for typical weeks in October 2009, before the floods, March 2010 while road access was difficult and May 2010 once the temporary road bridge had been opened. The survey found that the number of trips for all purposes had reduced in March and although it had risen again in May, it had not reached the previous levels. Leisure and social trips were the most reduced, partly because of the extra time needed for other travel. Shopping trips reduced and often changed destination and work trips showed most propensity for mode change. Although respondents’ car trips fell by nearly a half, the majority of trips were still made by car. Train travel increased by over 500% and although it dropped in May there were still more trips made by train in May than in October. The consequences of the new travel situation ranged from enjoying the physical exercise and sociability of walking across the temporary foot bridge to feelings of isolation, worry about elderly relations on the other side of the river and, for some, the loss of a job or earnings and severe stress. Household duties could be re-allocated to accommodate different schedules and longer travel times. Most respondents recognised the efforts made by Cumbria County Council and other agencies, although officers themselves worried about the impact of the emergency on other aspects of their responsibilities. Interviews with key stakeholders demonstrated how it was not just travellers adjusting to a new geography around Workington. Several employers redeployed staff so they could work on the side of the river where they lived to avoid a long commute. Services were provided in the north of the area: supermarket, mobile bank, doctors’ surgeries, while other public services (Police, Fire and Ambulance Services) re-aligned their administrative boundaries or practices to adjust to the new situation. The findings suggest there is an ability to change travel patterns when circumstances change, but there remains a high car dependence, even when the alternatives are cheaper and more convenient