We present a detailed overview of the cosmological surveys that we aim to carry out with Phase 1 of the Square Kilometre Array (SKA1) and the science that they will enable. We highlight three main surveys: a medium-deep continuum weak lensing and low-redshift spectroscopic HI galaxy survey over 5 000 deg2; a wide and deep continuum galaxy and HI intensity mapping (IM) survey over 20 000 deg2 from $z = 0.35$ to 3; and a deep, high-redshift HI IM survey over 100 deg2 from $z = 3$ to 6. Taken together, these surveys will achieve an array of important scientific goals: measuring the equation of state of dark energy out to $z \sim 3$ with percent-level precision measurements of the cosmic expansion rate; constraining possible deviations from General Relativity on cosmological scales by measuring the growth rate of structure through multiple independent methods; mapping the structure of the Universe on the largest accessible scales, thus constraining fundamental properties such as isotropy, homogeneity, and non-Gaussianity; and measuring the HI density and bias out to $z = 6$ . These surveys will also provide highly complementary clustering and weak lensing measurements that have independent systematic uncertainties to those of optical and near-infrared (NIR) surveys like Euclid, LSST, and WFIRST leading to a multitude of synergies that can improve constraints significantly beyond what optical or radio surveys can achieve on their own. This document, the 2018 Red Book, provides reference technical specifications, cosmological parameter forecasts, and an overview of relevant systematic effects for the three key surveys and will be regularly updated by the Cosmology Science Working Group in the run up to start of operations and the Key Science Programme of SKA1.

We compared sepsis “time zero” and Centers for Medicare and Medicaid Services (CMS) SEP-1 pass rates among 3 abstractors in 3 hospitals. Abstractors agreed on time zero in 29 of 80 (36%) cases. Perceived pass rates ranged from 9 of 80 cases (11%) to 19 of 80 cases (23%). Variability in time zero and perceived pass rates limits the utility of SEP-1 for measuring quality.

Extractive industries have long been a topic of study in environmental social science. These studies have focused on how extractive industries, as linked to global capitalism, degrade local communities and their environments, but have failed to consider their racialized effects. At the same time, when scholars have examined the intersection of race and the environment, their analyses tend towards the quantification and mapping of the disproportionate environmental burdens that weigh upon communities of color. Both literatures neglect to examine the intersection of race and the environment from a phenomenological perspective. Our research intervenes in the literature by asking: (1) How is the environment implicated in conditioning racialized subjectivities? And (2) How do landscapes and environment impact the formation of collective identity and sense of belonging for African Americans? In this article, we focus on the lived experience of a generation of Black coal miners and their families, who migrated throughout the central Appalachian region during the twentieth century Great Migration. This study offers an empirical investigation into the “landscapes of meaning” that can emerge from the experience of racialized displacement from land and environment. Further, in documenting the lived experience of this group of African Americans, this study also counters the otherwise dominant narrative that portrays Appalachian people as hopeless, helpless, and homeless; and White. Data for this study are drawn from the EKAAMP collection, a community-driven participatory archive aimed at documenting the lives of African American coal miners and their families. This work offers three contributions: It (1) reinserts agency into the analysis of communities affected by extractive economies; (2) invigorates the productive tensions that underlie considerations of the inextricable linkages between environment and the phenomenological experience of racialization; and (3) reconsiders the long-standing historical intersections between environment, community, and race.

Operation of the six 13.7 m antennas of the Fleurs synthesis telescope as a sub-array has provided a new and surprisingly versatile astronomical tool. With enhanced reliability and fully automated operation, unattended observing over several days is possible. Interleaved ‘multiple-snapshot’ observations of many fields per day can be made.

The array has shown itself to be particularly suitable for the measurement of precision (a few arcsecond) positions for the optical identification of a large number of radio sources, a survey of compact sources and the monitoring of the activity of several radio stars over periods of weeks. At present a program of recalibration is under way to improve the positional accuracy and dynamic range of the instrument.

A program to determine accurate radio positions and optical identifications of southern flat-spectrum radio sources has been undertaken with the six-dish array of the Fleurs synthesis telescope at 1.4 GHz and using the SERC J sky survey. This sample covers the declination range −80° to −50° and comprises all 198 sources from the Parkes catalogue with α of > −0.5 and flux density of 0.25 Jy.

The radio astrometric phase of the program is complete. We conclude that by comparison with accurate VLBI positions the FST positions have r.m.s. uncertainties of ∼0″.9. There is no global bias in the FST positions at the 0″.2 to 0″.3 level relative to the JPL VLBI extragalactic reference frame. A comparison with positions from the Parkes catalogue shows that in the southern regions the Parkes catalogue has rms position errors of about 9″. There is no significant bias between the FST and Parkes positions.