708 research outputs found
Safeguarding livelihoods against reductions in economic output
Secular stagnation, escalating socio-ecological crises, and the urgent need to scale back resource use in affluent countries make reductions in economic output increasingly likely. In this context, the prevailing vulnerability of livelihoods to a reduction in output poses a fundamental threat, and obstructs stringent environmental policies that reduce production or consumption.
This study explores what creates this vulnerability, and how it might be overcome. We introduce a novel analytic framework that describes the relationship between economic output and the adequacy of livelihoods. Using empirical data for the years around the Global Financial Crisis, we illustrate the vulnerability of livelihoods in the UK. Based on our framework, we show that the vulnerability is not inevitable but arises when livelihoods are dependent on wage labour whilst employment and adequate incomes for workers are insecure, or when adequate pensions are insecure. These conditions are pervasive in contemporary capitalist economies, primarily due to profit maximisation and neoliberal welfare and labour policy. Profit maximisation may in fact actively foster the vulnerability of livelihoods, as the vulnerability can be used as a lever for squeezing wages, and as a pretext for pursuing economic growth and blocking environmental policies.
Finally, we identify a range of interventions that could overcome the vulnerability, including specific versions of universal basic services, a universal basic income, a minimum income guarantee, a job guarantee, living wages, worktime reduction, and a pension guarantee, alongside changes in capital-labour relations and a shift to not-for-profit provisioning. Such interventions could secure livelihoods in volatile or contracting economies, and make stringent environmental policies socially sustainable and more politically palatable
Local molecular and global connectomic contributions to cross-disorder cortical abnormalities
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Forage quality, mineral constituents, and performance of beef yearlings grazing two crested wheatgrasses
In the central Great Plains, crested wheatgrasses (Agropyron cristatum
(L.) Gaetner and A. desertorium (Fischer ex Link) Schultes] are
best utilized for early spring and late fall grazing. The principal objective
of this study was to determine if beef (Bos taurus L.) yearlings
grazing 'Ruff' (A. cristatum) during the spring grazing season had
higher average daily gains and gains per hectare than cattle grazing
`Nordan' (A. desertorum). These cultivars were evaluated in grazing
trials (four replications) in eastern Nebraska in 1985, 1986, and 1987.
The 0.8-ha pastures were seeded in the fall of 1983 on a Typic Argiudoll
soil and were fertilized annually with 68 to 90 kg N ha-1. Grazing
was for 6 wk each spring by yearling steers with a beginning average
weight of 250 kg. Averaged over 3 yr, Ruff produced higher gains
per hectare than Nordan (272 vs 245 kg ha-1) probably because it
produced more herbage because of its better persistence. At the end
of the trial, the averge basal cover of Ruff and Nordan were 21 and
6%, respectively. Three-year mean average daily gains were Ruff =
1.28 vs. Nordan = 1.34 kg d-1, which were unexpected, because Ruff
generally had higher forage quality as measured by an array of parameters.
Ruff forage had a higher, less desirable grass tetany ratio
[K/(Mg +Ca)) than Nordan (2.6 vs. 2.3) averaged over 3 yr. Cattle
grazing Ruff had lower blood serum Mg levels than cattle grazing
Nordan (15.4 vs. 16.2 mg L-1, both of which were below the hypomagnesemia
threshold of 18 mg L-1. This condition may have reduced
intake and animal gains. These results indicate the need for evaluating
pasture and range grass cultivars under grazing conditions
Low Background Micromegas in CAST
Solar axions could be converted into x-rays inside the strong magnetic field
of an axion helioscope, triggering the detection of this elusive particle. Low
background x-ray detectors are an essential component for the sensitivity of
these searches. We report on the latest developments of the Micromegas
detectors for the CERN Axion Solar Telescope (CAST), including technological
pathfinder activities for the future International Axion Observatory (IAXO).
The use of low background techniques and the application of discrimination
algorithms based on the high granularity of the readout have led to background
levels below 10 counts/keV/cm/s, more than a factor 100 lower than
the first generation of Micromegas detectors. The best levels achieved at the
Canfranc Underground Laboratory (LSC) are as low as 10
counts/keV/cm/s, showing good prospects for the application of this
technology in IAXO. The current background model, based on underground and
surface measurements, is presented, as well as the strategies to further reduce
the background level. Finally, we will describe the R&D paths to achieve
sub-keV energy thresholds, which could broaden the physics case of axion
helioscopes.Comment: 6 pages, 3 figures, Large TPC Conference 2014, Pari
Life expectancy in older adults with advanced cancer: Evaluation of a geriatric assessment-based prognostic model
Objectives: Oncologists estimate patients' prognosis to guide care. Evidence suggests oncologists tend to overestimate life expectancy, which can lead to care with questionable benefits. Information obtained from geriatric assessment may improve prognostication for older adults. In this study, we created a geriatric assessment-based prognostic model for older adults with advanced cancer and compared its performance to alternative models. Materials and methods: We conducted a secondary analysis of a trial (URCC 13070; PI: Mohile) capturing geriatric assessment and vital status up to one year for adults age ≥ 70 years with advanced cancer. Oncologists estimated life expectancy as 0–6 months, 7–12 months, and > 1 year. Three statistical models were developed: (1) a model including age, sex, cancer type, and stage (basic model), (2) basic model + Karnofsky Performance Status (≤50, 60–70, and 80+) (KPS model), and (3) basic model +16 binary indicators of geriatric assessment impairments (GA model). Cox regression was used to model one-year survival; c-indices and time-dependent c-statistics assessed model discrimination and stratified survival curves assessed model calibration. Results: We included 484 participants; mean age was 75; 48% had gastrointestinal or lung cancer. Overall, 43% of patients died within one year. Oncologists classified prognosis accurately for 55% of patients, overestimated for 35%, and underestimated for 10%. C-indices were 0.61 (basic model), 0.62 (KPS model), and 0.63 (GA model). The GA model was well-calibrated. Conclusions: The GA model showed moderate discrimination for survival, similar to alternative models, but calibration was improved. Further research is needed to optimize geriatric assessment-based prognostic models for use in older adults with advanced cancer
The EDGE-CALIFA survey: Central molecular gas depletion in AGN host galaxies - A smoking gun for quenching?
Feedback from an active galactic nucleus (AGN) is often implicated as a mechanism that leads to the quenching of galactic star formation. However, AGN-driven quenching is challenging to reconcile with observations that AGN hosts tend to harbour equal (or even excess) amounts of gas compared with inactive galaxies of similar stellar mass. In this paper, we investigate whether AGN feedback happens on sub-galactic (kpc) scales, an effect that might be difficult to detect with global gas measurements. Using kpc-scale measurements of molecular gas (ΣH2) and stellar mass (Σ∗) surface densities, taken from the Extragalactic Data base for Galaxy Evolution-Calar Alto Legacy Integral Field Area survey, we show that the gas fractions of central AGN regions are typically a factor of ∼2 lower than those in star-forming regions. Based on four galaxies with the best spaxel statistics, the difference between AGN and star-forming gas fractions is seen even within a given galaxy, indicating that AGN feedback is able to deplete the molecular gas reservoir in the central few kpc. © 2021 The Author(s).The authors acknowledge an NSERC Discovery Grant (SLE), NSF AST-1616199 (TW), support by the Deutsche Forschungsgemeinschaft project number SFB956A (DC), NSF AST-1615960 (AB, SNV), PID2019-109067GB-I00, P18-FRJ-2595, SEV-2017-0709 (RGB), IA-100420, IN100519, CF19-39578, CB-285080, and FC-2016-01-1916 (SFS and JBB),and Fondecyt grant number 1190684 (MR). Support for CARMA construction was derived from the Gordon and Betty Moore Foundation, the Eileen and Kenneth Norris Foundation, the Caltech Associates, the states of California, Illinois, and Maryland, and the NSF. Funding for CARMA development and operations was supported by NSF and the CARMA partner universities. We acknowledge the usage of the HyperLeda data base (http://leda.univ-lyon1.fr).Peer reviewe
Measurement of W Polarisation at LEP
The three different helicity states of W bosons produced in the reaction e+
e- -> W+ W- -> l nu q q~ at LEP are studied using leptonic and hadronic W
decays. Data at centre-of-mass energies \sqrt s = 183-209 GeV are used to
measure the polarisation of W bosons, and its dependence on the W boson
production angle. The fraction of longitudinally polarised W bosons is measured
to be 0.218 \pm 0.027 \pm 0.016 where the first uncertainty is statistical and
the second systematic, in agreement with the Standard Model expectation
Search for Anomalous Couplings in the Higgs Sector at LEP
Anomalous couplings of the Higgs boson are searched for through the processes
e^+ e^- -> H gamma, e^+ e^- -> e^+ e^- H and e^+ e^- -> HZ. The mass range 70
GeV < m_H < 190 GeV is explored using 602 pb^-1 of integrated luminosity
collected with the L3 detector at LEP at centre-of-mass energies
sqrt(s)=189-209 GeV. The Higgs decay channels H -> ffbar, H -> gamma gamma, H
-> Z\gamma and H -> WW^(*) are considered and no evidence is found for
anomalous Higgs production or decay. Limits on the anomalous couplings d, db,
Delta(g1z), Delta(kappa_gamma) and xi^2 are derived as well as limits on the H
-> gamma gamma and H -> Z gamma decay rates
Measurement of W Polarisation at LEP
The three different helicity states of W bosons produced in the reaction e+
e- -> W+ W- -> l nu q q~ at LEP are studied using leptonic and hadronic W
decays. Data at centre-of-mass energies \sqrt s = 183-209 GeV are used to
measure the polarisation of W bosons, and its dependence on the W boson
production angle. The fraction of longitudinally polarised W bosons is measured
to be 0.218 \pm 0.027 \pm 0.016 where the first uncertainty is statistical and
the second systematic, in agreement with the Standard Model expectation
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