42 research outputs found

    African gateways : measuring airline connectivity change for Africa's global urban networks in the 2003-2009 period

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    This paper studies the globalization of major African cities through their changing insertion in global airline networks. As such, the paper adds to a growing body of literature that analyzes the role of infrastructure in the formation of world-city networks. We draw on a rich data source that provides longitudinal airline booking data, which can be directly linked up to the evolution of inter-urban networks at the African and global scale. Our results indicate that Johannesburg remains the major gateway to Africa, but other regional centers and in particular Cairo, Lagos, Casablanca and Nairobi are rapidly complementing Johannesburg in this role. The globalization of African cities is related to rapid network growth on the African continent, but is outrun by fast growth in terms of non-African connections. Among the latter, connections to Asia and the Middle East are rapidly gaining importance. In the end, the paper argues that SouthSouth connections are crucial for an understanding of the contemporary globalization of African cities

    Exploring a small world: motivations and obligations for academic travel in a Flemish context

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    Short-term travel has become a significant component of work for many academics. This brings about new challenges for the individual academic, academic institutions, but also society more generally. Regular short-term travel is bound to have an impact on the work-life balance of the traveller and his or her family, while the high environmental costs and possible gender/social inequality associated with this mobility raise questions about the value and necessity of the practice. There is however still a surprising void when it comes to research examining the role, function and necessity of short-term academic travel. This dissertation helps filling this gap by exploring academic travel mainly as a social practice. By drawing on the recent mobilities turn in the social sciences, an understanding of the main motivations and obligations to travel is offered in light of the nature of contemporary academic work and careers. Moreover, by engaging in mixed methods research at Ghent University, some of the issues with respect to work-life balance and the gendered aspect of travel are addressed. The focus is on academic travel in a Flemish context (Belgium), which is currently characterised by an internationalising higher education system, which has in turn acted as a catalyst for academic travel. Such an exploration of the intricacies of academic travel is needed, as it provides insights into how academic travel is a stratified practice, and highlights how academics cope with work-related travel across life and career stages

    A molecular timetable for apical bud formation and dormancy induction in poplar

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    The growth of perennial plants in the temperate zone alternates with periods of dormancy that are typically initiated during bud development in autumn. In a systems biology approach to unravel the underlying molecular program of apical bud development in poplar (Populus tremula 3 Populus alba), combined transcript and metabolite profiling were applied to a high-resolution time course from short-day induction to complete dormancy. Metabolite and gene expression dynamics were used to reconstruct the temporal sequence of events during bud development. Importantly, bud development could be dissected into bud formation, acclimation to dehydration and cold, and dormancy. To each of these processes, specific sets of regulatory and marker genes and metabolites are associated and provide a reference frame for future functional studies. Light, ethylene, and abscisic acid signal transduction pathways consecutively control bud development by setting, modifying, or terminating these processes. Ethylene signal transduction is positioned temporally between light and abscisic acid signals and is putatively activated by transiently low hexose pools. The timing and place of cell proliferation arrest (related to dormancy) and of the accumulation of storage compounds (related to acclimation processes) were established within the bud by electron microscopy. Finally, the identification of a large set of genes commonly expressed during the growth-to-dormancy transitions in poplar apical buds, cambium, or Arabidopsis thaliana seeds suggests parallels in the underlying molecular mechanisms in different plant organs

    Quality assurance of rectal cancer diagnosis and treatment - phase 3 : statistical methods to benchmark centres on a set of quality indicators

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    In 2004, the Belgian Section for Colorectal Surgery, a section of the Royal Belgian Society for Surgery, decided to start PROCARE (PROject on CAncer of the REctum), a multidisciplinary, profession-driven and decentralized project with as main objectives the reduction of diagnostic and therapeutic variability and improvement of outcome in patients with rectal cancer. All medical specialties involved in the care of rectal cancer established a multidisciplinary steering group in 2005. They agreed to approach the stated goal by means of treatment standardization through guidelines, implementation of these guidelines and quality assurance through registration and feedback. In 2007, the PROCARE guidelines were updated (Procare Phase I, KCE report 69). In 2008, a set of 40 process and outcome quality of care indicators (QCI) was developed and organized into 8 domains of care: general, diagnosis/staging, neoadjuvant treatment, surgery, adjuvant treatment, palliative treatment, follow-up and histopathologic examination. These QCIs were tested on the prospective PROCARE database and on an administrative (claims) database (Procare Phase II, KCE report 81). Afterwards, 4 QCIs were added by the PROCARE group. Centres have been receiving feedback from the PROCARE registry on these QCIs with a description of the distribution of the unadjusted centre-averaged observed measures and the centre’s position therein. To optimize this feedback, centres should ideally be informed of their risk-adjusted outcomes and be given some benchmarks. The PROCARE Phase III study is devoted to developing a methodology to achieve this feedback

    Mobility and professional networks in academia: an exploration of the obligations of presence

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    This article explores the obligations of presence behind work-related mobility for academics in internationalizing higher education systems. By further developing John Urry’s concept of ‘meetingness’, the article reveals how academics depend on corporeal and virtual mobility to create and maintain a networked professional life outside their own institution, which is crucial in the context of changing work conditions. Our insights are drawn from original qualitative research (42 interviews) in a Flemish and Danish context. The data reveal obligations of presence associated with an interrelated mix of functionality, and the construction of dense and sparse social networks that together support career success and work at the frontiers of academic knowledge. Despite the now well-recognised costs of corporeal mobility, obligations of presence result in virtual and corporeal mobility coexisting, rather than the former substituting for the latter. Virtual mobility is mainly used when conflicting obligations of presence exist, and as a means of sustaining networks over time given the processual nature of meetingness, rather than as a means to reduce levels of corporeal mobility
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