Urban transport networks and overseas visitors : analysis of the factors affecting usage and the implications for destination management

Whilst transport has repeatedly been identified as an integral component in the tourism system, the relationship between urban public transport networks and visitor behaviour at urban destinations remains largely unexplored. Furthermore, tourist transport is rarely the subject of the same quality benchmarking techniques that are applied to other elements of the tourism product.The thesis reviews the use of service quality and customer satisfaction measures in urban tourism and urban public transport, highlighting dimensions of urban public transport quality which may be of particular relevance to overseas visitors at urban destinations. The results of a survey of overseas visitors to Greater Manchester, employing both quantitative and qualitative data collection techniques, are subsequently presented, identifying factors affecting the use of public transport by overseas visitors to Greater Manchester. Attributes of public transport service quality, revealed by the research to be of importance in measuring overseas visitors’ satisfaction with urban public transport performance in Greater Manchester, are reduced by means of principal components analysis to reveal the underlying dimensions of overseas visitors’ satisfaction with Manchester’s public transport system. An ensuing regression analysis reveals the relationships between the dimensions of public transport performance, overall satisfaction with public transport and satisfaction with Manchester as a visitor destination. Additionally, an importance-performance analysis is employed to uncover the strengths and weaknesses of public transport service in Manchester from an overseas visitor perspective. The implications for destination management are discussed

Interactive batch process schedule optimization and decision-making using multiobjective genetic algorithms

A multiobjective genetic algorithm (MOGA) is applied to a test batch scheduling problem to optimize five objectives simultaneously. The design of the MOGA allows an emphasis on human interaction with the optimization process, including the ability to change priorities of preferences and plant data interactively, and to allow the MOGA to make decisions regarding batch size and the rule task allocation. Experimental results demonstrate the development of this technique, allowing the combination of human expertise and MOGA optimization power to provide scheduling solutions to a highly complex problem

Sex differences in sepsis hospitalisations and outcomes in older women and men: A prospective cohort study

Purpose: To examine the association of sex with hospitalisation due to sepsis and related outcomes. Methods: Prospective cohort study of 264,678 adults, average age 62.7 years at recruitment (2006–2009) in Australia. Participants were followed for sepsis hospitalisation identified using the International Classification of Diseases coding. Outcomes included sex differences in the risk of an incident sepsis hospitalisation, mortality, length of ICU and hospital stay and readmissions during the following year. Results: Over 2,070,343 years of follow-up there were 12,912 sepsis hospitalisations, 59.6% in men. Age-standardised risk of hospitalisation was higher in men versus women (10.37 vs 6.77 per 1,000 person years; age-adjusted HR 1.58; 95% CI 1.53–1.59) and did not attenuate after adjusting for sociodemographics, health behaviours and co-morbidities. Relative risks were similar for sepsis-related ICU admissions (adjusted HR 1.72; 95% CI 1.57–1.88). Death at one year was more common in men than women (39.3% vs 33.7% p<0.001). After adjusting for age, men had a longer hospital (12.0 vs 11.2 days; p<0.001) and ICU (6.5 vs 5.8 days; p<0.001) stays and were more likely to be readmitted to hospital for sepsis (22.3 vs 19.4%; p<0.001) or any reason (73.0% vs 70.7%; p<0.001) at one year. Conclusion: In older adults, compared to women, men are at an increased risk of sepsis hospitalisation, sepsis-related ICU admission, death and readmission to hospital within one year after a sepsis hospitalisation. Understanding these sex differences and their mechanisms may offer opportunities for better prevention and management and improved patient outcomes

A parametric level-set method for partially discrete tomography

This paper introduces a parametric level-set method for tomographic reconstruction of partially discrete images. Such images consist of a continuously varying background and an anomaly with a constant (known) grey-value. We represent the geometry of the anomaly using a level-set function, which we represent using radial basis functions. We pose the reconstruction problem as a bi-level optimization problem in terms of the background and coefficients for the level-set function. To constrain the background reconstruction we impose smoothness through Tikhonov regularization. The bi-level optimization problem is solved in an alternating fashion; in each iteration we first reconstruct the background and consequently update the level-set function. We test our method on numerical phantoms and show that we can successfully reconstruct the geometry of the anomaly, even from limited data. On these phantoms, our method outperforms Total Variation reconstruction, DART and P-DART.Comment: Paper submitted to 20th International Conference on Discrete Geometry for Computer Imager

Risk, precaution and science: towards a more constructive policy debate. Talking point on the precautionary principle

Few issues in contemporary risk policy are as momentous or contentious as the precautionary principle. Since it first emerged in German environmental policy, it has been championed by environmentalists and consumer protection groups, and resisted by the industries they oppose (Raffensperger & Tickner, 1999). Various versions of the principle now proliferate across different national and international jurisdictions and policy areas (Fisher, 2002). From a guiding theme in European Commission (EC) environmental policy, it has become a general principle of EC law (CEC, 2000; Vos & Wendler, 2006). Its influence has extended from the regulation of environmental, technological and health risks to the wider governance of science, innovation and trade (O'Riordan & Cameron, 1994)

An evaluation of the Fishing For Litter (FFL) scheme in the UK in terms of attitudes, behavior, barriers and opportunities

Marine litter is a global, persistent, and increasing threat to the oceans, and numerous initiatives aim to address this challenge. Fishing For Litter (FFL) is a voluntary clean-up scheme, where litter is collected as part of routine fishing operations. We surveyed fishers (n=97) and stakeholders (n=22) in the UK to investigate perceptions of FFL, its strengths and weaknesses, and potential co-benefits of the scheme. Fishers reported being aware of and concerned about the negative impacts of litter. Overall, FFL was evaluated very positively (7.85/10). In addition, FFL fishers reported less environmentally harmful waste management behaviors both out at sea and in other contexts than did non-FFL fishers. Fishers and stakeholders listed strengths and weaknesses of the scheme and made suggestions for future changes. As well as directly helping to remove litter, this paper demonstrates that clean-up schemes can make a contribution to addressing the underlying causes of marine pollution

Revisiting Ruddick: Feminism, pacifism and non-violence

This article explores feminist contentions over pacifism and non-violence in the contextof the Greenham Common Peace Camp in the 1980s and later developments offeminist Just War Theory. We argue that Sara Ruddick’s work puts feminist pacifism, its radical feminist critics and feminist just war theory equally into question. Although Ruddick does not resolve the contestations within feminism over peace, violence and the questions of war, she offers a productive way of holding the tension between them. In our judgment, her work is helpful not only for developing a feminist political response to the threats and temptations of violent strategies but also for thinking through the question of the relation between violence and politics as such

Seagrass can mitigate negative ocean acidification effects on calcifying algae

The ultimate effect that ocean acidification (OA) and warming will have on the physiology of calcifying algae is still largely uncertain. Responses depend on the complex interactions between seawater chemistry, global/local stressors and species-specific physiologies. There is a significant gap regarding the effect that metabolic interactions between coexisting species may have on local seawater chemistry and the concurrent effect of OA. Here, we manipulated CO2 and temperature to evaluate the physiological responses of two common photoautotrophs from shallow tropical marine coastal ecosystems in Brazil: the calcifying alga Halimeda cuneata, and the seagrass Halodule wrightii. We tested whether or not seagrass presence can influence the calcification rate of a widespread and abundant species of Halimeda under OA and warming. Our results demonstrate that under elevated CO2, the high photosynthetic rates of H. wrightii contribute to raise H. cuneata calcification more than two-fold and thus we suggest that H. cuneata populations coexisting with H. wrightii may have a higher resilience to OA conditions. This conclusion supports the more general hypothesis that, in coastal and shallow reef environments, the metabolic interactions between calcifying and non-calcifying organisms are instrumental in providing refuge against OA effects and increasing the resilience of the more OA-susceptible species.E.B. would like to thank the Coordenação de Aperfeiçoamento de Pessoas de Nível Superior (CAPES) for Masters funding. Funding for this project came from the Synergism grant (CNPq 407365/2013-3). We extend our thanks to the Brazil-based Projeto Coral Vivo and its sponsor PetroBras Ambiental for providing the Marine Mesocosm structure and experimental assistance.info:eu-repo/semantics/publishedVersio