Environmental psychology and the geographies of ethical and sustainable consumption: aligning, triangulating, challenging?   总被引：2，自引：0，他引：2  

Kersty Hobson 《Area》2006,38(3):292-300

Human geographers' research into lay responses to burgeoning environmental issues has highlighted their mediated and contingent constitution. Situated within the discipline's cultural turn, this work has challenged prevailing informational and cognitive approaches to sustainability. In doing so, however, potentially informative concepts and findings from environmental psychology have been sidelined. In this paper I attempt a modest allying of the two sub-disciplines, outlining their differences and similarities, and arguing that environmental psychology can triangulate with human geography, as well as challenge tendencies within human geography literatures to simplify the 'psychological' subject.  相似文献   

Cosmological parameters from cluster abundances, cosmic microwave background and IRAS     

S. L. Bridle  V. R. Eke  O. Lahav  A. N. Lasenby  M. P. Hobson  S. Cole  C. S. Frenk  J. P. Henry 《Monthly notices of the Royal Astronomical Society》1999,310(2):565-570

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Bayesian modelling of clusters of galaxies from multifrequency-pointed Sunyaev–Zel'dovich observations     

Farhan Feroz  Michael P. Hobson  Jonathan T. L. Zwart  Richard D. E. Saunders  Keith J. B. Grainge 《Monthly notices of the Royal Astronomical Society》2009,398(4):2049-2060

We present a Bayesian approach to modelling galaxy clusters using multi-frequency pointed observations from telescopes that exploit the Sunyaev–Zel'dovich effect. We use the recently developed multinest technique to explore the high-dimensional parameter spaces and also to calculate the Bayesian evidence. This permits robust parameter estimation as well as model comparison. Tests on simulated Arcminute Microkelvin Imager observations of a cluster, in the presence of primary CMB signal, radio point sources (detected as well as an unresolved background) and receiver noise, show that our algorithm is able to analyse jointly the data from six frequency channels, sample the posterior space of the model and calculate the Bayesian evidence very efficiently on a single processor. We also illustrate the robustness of our detection process by applying it to a field with radio sources and primordial CMB but no cluster, and show that indeed no cluster is identified. The extension of our methodology to the detection and modelling of multiple clusters in multi-frequency SZ survey data will be described in a future work.  相似文献   

Puerto Lápice eucrite fall: Strewn field,physical description,probable fireball trajectory,and orbit     

Josep M. TRIGO‐RODRÍGUEZ  Jiří BOROVIčKA  Jordi LLORCA  José M. MADIEDO  Jaime ZAMORANO  Jaime IZQUIERDO 《Meteoritics & planetary science》2009,44(2):175-186

Abstract— The fall of the Puerto Lápice eucrite occurred on May 10, 2007, at 17 h 57 m 30 ± 30 s UTC. Its daylight fireball was witnessed by hundreds of people from Spain, and produced a meteorite fall associated with a large strewn field of fragments. There were no direct pictures of the fireball, but several pictures of the fireball's train were taken from different locations in Spain. Additional theodolite calibrations of visual records were made in order to find the most probable fireball trajectory based on the available data. The shape of the meteorite strewn field was considered as well. Although the orbit of the Puerto Lápice meteoroid could not be computed due to the absence of velocity data, we assumed a likely range of geocentric velocities and computed a range of possible orbits. All solutions show that the body was in an Apollo‐type orbit, with low inclination and perihelion distance just below 1 astronomical unit (AU). This is the first case that an orbit can be discussed for an HED meteorite fall.  相似文献   

Radio source calibration for the Very Small Array and other cosmic microwave background instruments at around 30 GHz     

Yaser A. Hafez  Rod D. Davies  Richard J. Davis  Clive Dickinson  Elia S. Battistelli  Francisco Blanco  Kieran Cleary  Thomas Franzen  Ricardo Genova-Santos  Keith Grainge  Michael P. Hobson  Michael E. Jones  Katy Lancaster  Anthony N. Lasenby  Carmen P. Padilla-Torres  José Alberto Rubiño-Martin  Rafael Rebolo  Richard D. E. Saunders  Paul F. Scott  Angela C. Taylor  David Titterington  Marco Tucci  Robert A. Watson 《Monthly notices of the Royal Astronomical Society》2008,388(4):1775-1786

Accurate calibration of data is essential for the current generation of cosmic microwave background (CMB) experiments. Using data from the Very Small Array (VSA), we describe procedures which will lead to an accuracy of 1 per cent or better for experiments such as the VSA and CBI. Particular attention is paid to the stability of the receiver systems, the quality of the site and frequent observations of reference sources. At 30 GHz the careful correction for atmospheric emission and absorption is shown to be essential for achieving 1 per cent precision.
The sources for which a 1 per cent relative flux density calibration was achieved included Cas A, Cyg A, Tau A and NGC 7027 and the planets Venus, Jupiter and Saturn. A flux density, or brightness temperature in the case of the planets, was derived at 33 GHz relative to Jupiter which was adopted as the fundamental calibrator. A spectral index at ∼30 GHz is given for each.
Cas A, Tau A, NGC 7027 and Venus were examined for variability. Cas A was found to be decreasing at 0.394 ± 0.019 per cent yr⁻¹ over the period 2001 March to 2004 August. In the same period Tau A was decreasing at 0.22 ± 0.07 per cent yr⁻¹. A survey of the published data showed that the planetary nebula NGC 7027 decreased at 0.16 ± 0.04 per cent yr⁻¹ over the period 1967–2003. Venus showed an insignificant (1.5 ± 1.3 per cent) variation with Venusian illumination. The integrated polarization of Tau A at 33 GHz was found to be 7.8 ± 0.6 per cent at position angle =148°± 3°.  相似文献   

Multifrequency spectral analysis of extragalactic radio sources in the 33-GHz VSA catalogue: sources with flattening and upturn spectrum     

M. Tucci  J. A. Rubiño-Martin  R. Rebolo  R. Genova-Santos  R. A. Watson  R. A. Battye  K. A. Cleary  R. D. Davies  R. J. Davis  K. Grainge  M. Hobson  R. D. E. Saunders  A. Scaife  P. F. Scott 《Monthly notices of the Royal Astronomical Society》2008,386(3):1729-1738

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Simulations of partially coherent focal plane imaging arrays: Fisher matrix approach to performance evaluation     

G. Saklatvala  S. Withington  M. P. Hobson 《Monthly notices of the Royal Astronomical Society》2008,383(2):513-524

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Public responses to climate change: The role of deliberation in building capacity for adaptive action   总被引：1，自引：0，他引：1  

Kersty Hobson  Simon Niemeyer 《Global Environmental Change》2011,21(3):957-971

Public deliberative platforms have been argued as potentially beneficial in fostering adaptive capacity to respond to climate change. However, little is known about the veracity of such claims, and indeed how deliberation and adaptive capacity can and do intersect. In response, this paper reports on findings from a project into public responses to climate change in the Australian Capital Region. It utilises quantitative analysis—in the form of Q methodology—and qualitative analysis, to compare discourses that emerged from individual scenario-based interviews with those that emerged at the end of a 4-day public deliberative process. It shows that while the scenario interviews had an impact on participants, this impact is not sustained. By contrast, the deliberative process gave rise to new discourses, one of which (labelled ‘Collective Action Imperative’) is argued as indicative of a potentially constructive personal and collective adaptive capacity. However, advocating deliberative processes still requires caution, as less adaptive discourses prevailed, suggesting strong governance signals and leadership are still essential for fostering a positive public response to the challenges of climate change.  相似文献   

Assessing waterbird habitat use in coastal evaporative systems using stable isotopes (δC, δN and δD) as environmental tracers     

Francisco Ramírez  Aida Abdennadher  Carola Sanpera  Lluís Jover  Leonard I. Wassenaar  Keith A. Hobson 《Estuarine, Coastal and Shelf Science》2011

Isotopic patterns of biota across salinity gradients in man-made evaporative systems could assist in determining the use of these habitats by animals. Here we report δ¹³C, δ¹⁵N and δD measurements of a euryhaline fish, the Mediterranean toothcarp (Aphanius fasciatus), inhabiting a range of salinities in the Thyna saltworks near Sfax (Tunisia). The contribution of these salinity niches to egg formation of two typically piscivorous bird species breeding in the area and feeding within saltworks, Little Tern (Sternula albifrons) and Little Egret (Egretta garzetta), was inferred trough a triple-isotope (δ¹³C, δ¹⁵N and δD) Bayesian mixing model. Isotopic trends for fish δ¹⁵N and δD across the salinity gradient followed the equations: δ¹⁵N = e^{(1.1 + 47.68/Salinity)} and δD = −175.74 + Salinity + Salinity²; whereas fish δ¹³C increased as salinity rose (δ¹³C = −10.83 + 0.02·Salinity), after a sudden drop in fish isotopic values for salinities >60 (Practical Salinity Scale) (average fish δ¹³C for salinities <60 = −5.92‰). Both bird species fed largely on low hypersalinity ponds (salinity = 43; average contribution = 37% and 22% for Little Egrets and Little Terns, respectively), although the use of intermediate hypersalinities (salinities 63 and 70) by Little Terns also occurred (16% and 21%, respectively). Isotopic patterns across salinity gradients allow the use of isotopic measurements to inform studies of habitat occupancy within evaporative systems and provide further insights into how wildlife communities interact with them.  相似文献   

Simulation of non-Gaussian cosmic microwave background maps     

Graca Rocha  M. P. Hobson  Sarah Smith  Pedro Ferreira  Anthony Challinor 《Monthly notices of the Royal Astronomical Society》2005,357(1):1-11

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