494 research outputs found

    A Decade of Urban History: The Historical Urban Studies Series

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    The first half of the 1990s was a pivotal period in the development and growth of urban history in Europe. In Britain the Urban History Group began to convene again after a decade in abeyance, work commenced on the three-volume Cambridge Urban History of Britain, the Urban History Yearbook became Urban History whilst the European Association of Urban Historians organized their first conference. It was in this climate that Ashgate Publishing commissioned a new monograph series, Historical Urban Studies, under the editorship of Richard Rodger, editor of Urban History, and Jean-Luc Pinol, the leading French urban historian and a key figure in the European Association of Urban Historians (EAUH). The aim of the series was and is to be comparative over both time and space, drawing on multiple locations to explore what is common and what distinctive about the urban experience of diverse towns and nations. The broad agenda for the series was shaped by an overarching concern with the administration and governance of the city which underpinned attempts to manage the social, economic and political challenges wrought by 300 years of urban change. In particular, the editors stress the importance of the comparative element which should allow historians to distinguish ‘which were systematic factors and which were of a purely local nature’. The editors set themselves an ambitious agenda and this essay aims to explore how the series has developed over the ten or so years since it commenced publication; the degree to which it has provided a platform for advancing the sub-discipline of urban history; and to consider some future directions which urban history might take

    The structure of elite power in the early twentieth century city: Norwich 1900-1935

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    Through a study of middle-class power in Norwich in the first third of the twentieth century, this paper tests a number of hypotheses concerning the behaviour of British urban elites. Analysis of networks (freemasons, business organizations and family) assesses the level of social unification among the middle class; elite involvement in chapel, charities and voluntary organizations addresses the question of social leadership; whilst elite politics is considered through three questions: did they become unified behind a single anti-socialist stance? Did the more important members of the elite leave urban politics? And did they abandon faith in grand civic projects? Its conclusions suggest that the power and involvement of the elite continued into the 1930s, maintaining a positive approach to the scope and function of municipal authority

    'Urban Liberalism and the "Lost Generation": Politics and middle-class culture in Norwich, 1900-1935'

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    This article utilizes the metaphor of the post-war Lost Generation to investigate the chronology of middle class political realignment and Liberal decline. It suggests that the Liberalism of twentieth-century Norwich owed its existence to the perpetuation of a closed culture based on business, chapel and urban residence. It questions the degree to which dissenting Liberals had been assimilated into the dominant ideology before 1914 by reference to marriage ties and associational links such as the freemasons. It asserts that the downfall of this Liberal culture in the long run, though not immediately, was the result of the Great War, which allowed the younger generation to break out of their insular world and mix more freely with the Anglican upper-middle class. However, it also demonstrates that the closed culture was such that those of the Edwardian political generation, although affected by the War, did not reject their Liberalism. Most continued to actively support the party into the 1930s, questioning the view that the middle classes had largely deserted the Liberals by 1924. Rather, it was the political maturation in the 1930s of the War generation which heralded the end of urban Liberalism and the triumph of middle class Conservatism

    Optical IP switching a solution to dynamic lightpath establishment in disaggregated network architectures

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    The landscape of the telecommunications environment is constantly evolving; in terms of architecture and increasing data-rate. Ensuring that routing decisions are taken at the lowest possible layer offers the possibility of greatest data throughput. We propose using wavelengths in a DWDM scheme as dedicated channels that bypass the routing lookup in a router. The future trend of telecommunications industry is, however, toward larger numbers of interlinked competing operator networks. This in turn means there is a lack of a unified control plane to allow current networks to dynamically provision optical paths. This paper will report on the concept of optical IP switching. This concept seeks to address optical control plane issues in disaggregated networks while providing a means to dynamically provision optical paths to cater for large data flows

    Reducing the susceptibility of lumped-element KIDs to two-level system effects

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    Arrays of lumped-element kinetic inductance detectors (LEKIDs) optically coupled through an antenna-coupled transmission line are a promising candidate for future cosmic microwave background (CMB) experiments. However, the dielectric materials used for the microstrip architecture are known to degrade the performance of superconducting resonators. In this paper, we investigate the feasibility of microstrip coupling to a LEKID, focusing on a systematic study of the effect of depositing amorphous silicon-nitride on a LEKID. The discrete and spatially-separated inductive and capacitive regions of the LEKID allow us to vary the degree of dielectric coverage and determine the limitations of the microstrip coupling architecture. We show that by careful removal of dielectric from regions of high electric field in the capacitor, there is minimal degradation in dielectric loss tangent of a partially covered lumped-element resonator. We present the effects on the resonant frequency and noise power spectral density and, using the dark responsivity, provide an estimate for the resulting detector sensitivity.Comment: Presented at the 18th International Workshop on Low Temperature Detectors. Published in the Journal of Low Temperature Physic

    Eliminating stray radiation inside large area imaging arrays

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    With increasing array size, it is increasingly important to control stray radiation inside the detector chips themselves. We demonstrate this effect with focal plane arrays of absorber coupled Lumped Element microwave Kinetic Inductance Detectors (LEKIDs) and lens-antenna coupled distributed quarter wavelength Microwave Kinetic Inductance Detectors (MKIDs). In these arrays the response from a point source at the pixel position is at a similar level to the stray response integrated over the entire chip area. For the antenna coupled arrays, we show that this effect can be suppressed by incorporating an on-chip stray light absorber. A similar method should be possible with the LEKID array, especially when they are lens coupled.Comment: arXiv admin note: substantial text overlap with arXiv:1707.0214

    Status of SuperSpec: A Broadband, On-Chip Millimeter-Wave Spectrometer

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    SuperSpec is a novel on-chip spectrometer we are developing for multi-object, moderate resolution (R = 100 - 500), large bandwidth (~1.65:1) submillimeter and millimeter survey spectroscopy of high-redshift galaxies. The spectrometer employs a filter bank architecture, and consists of a series of half-wave resonators formed by lithographically-patterned superconducting transmission lines. The signal power admitted by each resonator is detected by a lumped element titanium nitride (TiN) kinetic inductance detector (KID) operating at 100-200 MHz. We have tested a new prototype device that is more sensitive than previous devices, and easier to fabricate. We present a characterization of a representative R=282 channel at f = 236 GHz, including measurements of the spectrometer detection efficiency, the detector responsivity over a large range of optical loading, and the full system optical efficiency. We outline future improvements to the current system that we expect will enable construction of a photon-noise-limited R=100 filter bank, appropriate for a line intensity mapping experiment targeting the [CII] 158 micron transition during the Epoch of ReionizationComment: 16 pages, 10 figures, Proceedings of the SPIE Astronomical Telescopes + Instrumentation 2014 Conference, Vol 9153, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI

    Implementation and Long-Term Outcomes of Organisational Health Literacy Interventions in Ireland and The Netherlands:A Longitudinal Mixed-Methods Study

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    Organisational Health Literacy (OHL)-interventions are needed to overcome health inequality. OHL-interventions have successfully identified communication barriers at the organisational level, but evidence is limited on the extent to which this leads to sustainable organisational change. This study aims to assess the implementation fidelity, moderators (barriers and facilitators), and long-term impact of OHL-interventions in hospitals in Ireland and The Netherlands. We used a longitudinal mixed-methods approach to assess two similar OHL-interventions in one Irish and three Dutch hospitals. The OHL-interventions concerned the improvement of navigation and implementation of health literacy-friendly communication throughout organisations. Participants were 24 hospital employees and 40 older adults who use hospital services. At six, eight, and eighteen months, we assessed the level of implementation, barriers and facilitators, and impact through questionnaires and in-depth semi-structured interviews. After older adults and professionals had identified a number of communication problems, we found that professionals had successfully implemented OHL-interventions to promote navigation and comprehensible communication. Limited resources and variation in organisational structures and procedures were perceived as barriers to implementation. The participation of service users, leadership support, and a stepwise implementation of interventions were perceived to facilitate implementation. In the long term, the OHL-interventions led to system-wide improvements, as shown by better embedding of health literacy policies, enhanced patient engagement, provision of plain language training and comprehensible information. Findings were similar for the two countries. Embedded OHL-interventions resulted in sustainable and system-wide health literacy changes in all four hospitals. Following implementation, OHL-interventions have the potential to promote health equity and empowerment among health service users
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