Effect of flow-pressure phase on performance of regenerators in the range of 4 K to 20 K

Lewis, Michael Alexander Oxenham; Taylor, Ryan P.; Bradley, Peter E.; Radebaugh, Ray

doi:10.1063/1.4860751

“…Thus the results themselves are not precise and are designed to simply demonstrate the evolution rather than provide a quantitative comparison between experiments. The best fit line shows the growth in the impact of past surveys, following the development of Multi-Object Spectrographs (MOS) on the Anglo-Australian telescope (Lewis et al 1998) and the Sloan telescope (Gunn et al 2006), which continues to the next generation with a new MOS being developed for the Hobby-Eberly telescope (HETDEX; Hill et al 2008), the Mayall telescope (DESI; Levi et al 2013), the VISTA telescope (4MOST; de Jong et al 2014), the William Herschel Telescope (WEAVE; Dalton et al 2014), the Subaru telescope (PFS; Takada et al 2014) and the satellite experiments Euclid (Laureijs et al 2011) and WFIRST (Spergel et al 2015) . For clarity we only plot approximate DESI and Euclid predictions in Fig.…”

Section: Introductionmentioning

confidence: 99%

SDSS-III Baryon Oscillation Spectroscopic Survey Data Release 12: galaxy target selection and large-scale structure catalogues

Reid

¹

,

Ho

²

,

Padmanabhan

³

et al. 2015

Monthly Notices of the Royal Astronomical Society

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The Baryon Oscillation Spectroscopic Survey (BOSS), part of the Sloan Digital Sky Survey (SDSS) III project, has provided the largest survey of galaxy redshifts available to date, in terms of both the number of galaxy redshifts measured by a single survey, and the effective cosmological volume covered. Key to analysing the clustering of these data to provide cosmological measurements is understanding the detailed properties of this sample. Potential issues include variations in the target catalogue caused by changes either in the targeting algorithm or properties of the data used, the pattern of spectroscopic observations, the spatial distribution of targets for which redshifts were not obtained, and variations in the target sky density due to observational systematics. We document here the target selection algorithms used to create the galaxy samples that comprise BOSS. We also present the algorithms used to create large scale structure catalogues for the final Data Release (DR12) samples and the associated random catalogues that quantify the survey mask. The algorithms are an evolution of those used by the BOSS team to construct catalogues from earlier data, and have been designed to accurately quantify the galaxy sample. The code used, designated MKSAMPLE, is released with this paper.

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“…Not only can judgment be necessary to decide whether a specific rule is applicable to a particular project, but also the rules may require interpretation because, if too narrowly framed, they could be difficult to apply generally. However, this has led to criticisms such as that 'prescriptive guidance is awkward, ambiguous and complicated to use' [43]. Hence the emergence of a professional group of fire safety code consultants, whose expertise is in interpreting and reinterpreting the 'intent' of the rules to help clients navigate prescriptive codes.…”

Section: The Challenges Of Performance Engineeringmentioning

confidence: 99%

A Review of Sociological Issues in Fire Safety Regulation

Spinardi

¹

,

Bisby

²

,

Torero

³

2016

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This communication presents an overview of contemporary sociological issues in fire safety. The most obviously social aspects of fire safety -those that relate to the socioeconomic distribution of fire casualties and damage -are discussed first. The means that society uses to mitigate fire risks through regulation are treated next; focusing on the shift towards fire engineered solutions and the particular challenges this poses for the social distribution and communication of fire safety knowledge and expertise. Finally, the social construction of fire safety knowledge is discussed, raising questions about whether the confidence in the application of this knowledge by the full range of participants in the fire safety design and approvals process is always justified, given the specific assumptions involved in both the production of the knowledge and its extension to applications significantly removed from the original knowledge production; and the requisite competence that is therefore needed to apply this knowledge. The overarching objective is to argue that the fire safety professions ought to be more reflexive and informed about the nature of the knowledge and expertise that they develop and apply, and to suggest that fire safety scientists and engineers ought to actively collaborate with social scientists in research designed to study the way people interact with fire safety technology.

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“…Thus the results themselves are not precise and are designed to simply demonstrate the evolution rather than provide a quantitative comparison between experiments. The best fit line shows the growth in the impact of past surveys, following the development of Multi-Object Spectrographs (MOS) on the Anglo-Australian telescope (Lewis et al 1998) and the Sloan telescope (Gunn et al 2006), which continues to the next generation with a new MOS being developed for the Hobby-Eberly telescope (HETDEX; Hill et al 2008), the Mayall telescope (DESI; Levi et al 2013), the VISTA telescope (4MOST; de Jong et al 2014), the William Herschel Telescope (WEAVE; Dalton et al 2014), the Subaru telescope (PFS; Takada et al 2014) and the satellite experiments Euclid (Laureijs et al 2011) and WFIRST (Spergel et al 2015) . For clarity we only plot approximate DESI and Euclid predictions in Fig.…”

Section: Introductionmentioning

confidence: 99%

SDSS-III Baryon Oscillation Spectroscopic Survey Data Release 12: galaxy target selection and large scale structure catalogues

Reid¹,

Ho²,

Padmanabhan³

et al. 2015

Preprint

View full text Add to dashboard Cite

The Baryon Oscillation Spectroscopic Survey (BOSS), part of the Sloan Digital Sky Survey (SDSS) III project, has provided the largest survey of galaxy redshifts available to date, in terms of both the number of galaxy redshifts measured by a single survey, and the effective cosmological volume covered. Key to analysing the clustering of these data to provide cosmological measurements is understanding the detailed properties of this sample. Potential issues include variations in the target catalogue caused by changes either in the targeting algorithm or properties of the data used, the pattern of spectroscopic observations, the spatial distribution of targets for which redshifts were not obtained, and variations in the target sky density due to observational systematics. We document here the target selection algorithms used to create the galaxy samples that comprise BOSS. We also present the algorithms used to create large scale structure catalogues for the final Data Release (DR12) samples and the associated random catalogues that quantify the survey mask. The algorithms are an evolution of those used by the BOSS team to construct catalogues from earlier data, and have been designed to accurately quantify the galaxy sample. The code used, designated MKSAMPLE, is released with this paper.

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Effect of flow-pressure phase on performance of regenerators in the range of 4 K to 20 K

Cited by 4 publications

References 2 publications

SDSS-III Baryon Oscillation Spectroscopic Survey Data Release 12: galaxy target selection and large-scale structure catalogues

SDSS-III Baryon Oscillation Spectroscopic Survey Data Release 12: galaxy target selection and large-scale structure catalogues

A Review of Sociological Issues in Fire Safety Regulation

SDSS-III Baryon Oscillation Spectroscopic Survey Data Release 12: galaxy target selection and large scale structure catalogues

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