154 research outputs found
Active Interview Tactics Revisited: A Multigenerational Perspective
No full textWilliam (Billy) Shaffir taught about what it means to be a true empiricist, a sociologist committed to naturalistic observation as the most incisive method in our scientific toolbox. His inspiration still resonates, two decades later, in the work of new emerging scholars with the same commitment to ethnography—or what Billy more modestly and wisely calls “hanging around.” This paper is a tribute to his legacy that highlights the contributions of the next generation of graduate students that the lead author has been privileged to mentor at the University of Guelph. It builds on work by Hathaway and Atkinson on tactics of active interviewing to establish a more nuanced understanding of the benefits and challenges of being recognized as either an “insider” or “outsider,” and the implications of attempting to be both
A Late Cretaceous pole for the Pacific plate: implications for apparent and true polar wander and the drift of hotspots (Dataset)
No full textPaleomagnetic evidence for motion of the Hawaiian hotspot during formation of the Emperor seamounts
No full textIn search of high‐fidelity geomagnetic paleointensities: A comparison of single plagioclase crystal and whole rock Thellier‐Thellier analyses
No full textTelecommunications policy in Turkey: restructuring for economic growth. European Policy Paper #11, November 2006
No full textIntroduction. Modern telecommunications technology is now widely seen as a critical driver in economic development. However, the issues involved in the rapid deployment of this technology are complex and frequently highly controversial. While some of these issues are technical, the most difficult ones involve changing a legal and regulatory framework which was originally designed for different times and different technologies. The process of changing this framework necessarily involves disruptive change for existing service providers as well as substantial benefits for the economy at large. This paper seeks to discuss these issues in light of Turkey’s progress to date in taking advantage of advanced available telecommunications technology and the myriad productivity-enhancing services that are associated with it.(1) An important element in developing a more competitive and dynamic sector in Turkey has been the desire of the country to become a member of the European Union. This has encouraged changes in the telecommunications regulatory regime following the guidelines set out in Chapter 19 of the EU “acquis” for candidate members. Nonetheless, substantial further efforts are needed to complete and implement the desired regulatory framework, particularly as it affects the former government monopoly carrier, Turk Telekom, and the cable companies. A further limiting factor has been an overall investment climate in Turkey which has been characterized by a high level of uncertainty for most investors, regardless of size or nationality. Policy recommendations to help accelerate the deployment of telecommunications technology include a clear reaffirmation of the government’s priorities for the sector, a reduction in the level of ownership and regulatory uncertainty, strengthening the Board and Staff of the Telecommunications Authority, and reviewing policies which reduce the scope and increase the cost of telecommunication licenses
Primary pseudo-single and single-domain magnetite inclusions in quartzite cobbles of the Jack Hills (Western Australia): implications for the Hadean geodynamo
No full textZircons of the Jack Hills of Western Australia are the oldest known terrestrial minerals and as such they hold potential for recording Earth's oldest geomagnetic field. To preserve records of the most ancient magnetic field, the zircon host rocks must not have been heated to temperatures that resulted in a complete remagnetization. To test this hypothesis, magnetic minerals having very high unblocking temperatures must be present in the host rocks and capable of retaining magnetizations on billion-year timescales. Here, we use scanning electron microscopy analyses and transmission electron microscopy characterization of focused ion beam lift outs to document for the first time through direct imaging the presence of pseudosingle (PSD) to single-domain (SD) magnetite inclusions in Jack Hills quartzite cobbles. We further use focused ion milling to document the 3-D detrital morphology of an inclusion and micromagnetic modelling that suggest a single vortex magnetization. These results, together with recent advances in our understanding of the blocking temperatures and relaxation times of PSD grains, indicate that the Jack Hills host rocks contain magnetic inclusions capable of recording magnetizations as old as the age of the conglomerate (ca. 3 billion years old). These new results confirm that magnetic directions observed retained at high unblocking temperatures (500-580 °C) in these rocks identified in two independent laboratory analyses are carried by PSD/SD magnetite. The lack of an overprint direction recorded at these high temperatures excludes pervasive thermal and/or chemical remagnetization and indicates that the oldest zircons from the Jack Hills are potential recorders of the Hadean geodynamo
Re-thinking residential mobility : linking lives through time and space
No full textRory Coulter’s work on this paper was partly supported by an Economic and Social Research Council grant [ES/L009498/1]. Maarten van Ham’s contribution was supported by funding from the European Research Council under the European Union’s Seventh Framework Programme (FP/2007–2013) / ERC Grant Agreement n. 615159 (ERC Consolidator Grant DEPRIVEDHOODS, Socio-spatial inequality, deprived neighbourhoods, and neighbourhood effects); and from the Marie Curie programme under the European Union’s Seventh Framework Programme (FP/2007–2013) / Career Integration Grant no. PCIG10-GA-2011-303728 (CIG Grant NBHCHOICE, Neighbourhood choice, neighbourhood sorting, and neighbourhood effects). Allan Findlay’s work was supported by an Economic and Social Research Council grant [ES/K007394/1].While researchers are increasingly re-conceptualizing international migration, far less attention has been devoted to re-thinking short-distance residential mobility and immobility. In this paper we harness the life course approach to propose a new conceptual framework for residential mobility research. We contend that residential mobility and immobility should be re-conceptualized as relational practices that link lives through time and space while connecting people to structural conditions. Re-thinking and re-assessing residential mobility by exploiting new developments in longitudinal analysis will allow geographers to understand, critique and address pressing societal challenges.Peer reviewe
The Social Significance of Monetization in the Early Middle Ages*
No full textIn 1057, the ecclesiastical reformer Peter Damian (d. 1072/3) explained in a letter to his fellow cardinal bishops how a lump of debased silver might be remade into different coins but still remain a dangerous forgery, in the same way as a corrupt priest would always be tainted by his abuses.1 The image was presumably effective, for the same author used similar monetary metaphors on several other occasions. By doing so he tapped into a long Christian tradition developed in the Bible and subsequently in the writings of Ambrose, Augustine, Gregory the Great and others
Magnetostratigraphy of the Late Cretaceous to Eocene Sverdrup Basin: Implications for heterochroneity, deformation, and rotations in the Canadian Arctic archipelago
No full textHigh Geomagnetic Intensity During the Mid-Cretaceous from Thellier Analyses of Single Plagioclase Crystals
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Recent numerical simulations have yielded the most efficient geodynamo, having the largest dipole intensity when reversal frequency is low. Reliable paleointensity data are limited but heretofore have suggested that reversal frequency and paleointensity are decoupled. We report data from 56 Thellier-Thellier experiments on plagioclase crystals separated from basalts of the Rajmahal Traps (113 to 116 million years old) of India that formed during the Cretaceous Normal Polarity Superchron. These data suggest a time-averaged paleomagnetic dipole moment of 12.5 ± 1.4 × 10
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amperes per square meter, three times greater than mean Cenozoic and Early Cretaceous–Late Jurassic dipole moments when geomagnetic reversals were frequent. This result supports a correlation between intervals of low reversal frequency and high geomagnetic field strength.
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