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"Collins, Sara"
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The confessions of Frannie Langton : a novel
A servant and former slave is accused of murdering her employer and his wife in this astonishing historical thriller that moves from a Jamaican sugar plantation to the fetid streets of Georgian London.
Book
Covid-19 — Implications for the Health Care System
The Covid-19 pandemic has exposed and exacerbated weaknesses in the U.S. health care system. Many patients are losing their health insurance when they lose their jobs. Declining revenues are threatening the financial viability of some hospitals and medical practices. The authors propose policy solutions to address these challenges.
Journal Article
Pursuit : the Balvenie stories collection
\"What is it to pursue a goal, to strive for an ideal, to follow a dream? These are the questions explored by The Balvenie in this unique collection compiled by award-winning novelist Alex Preston. The stories - from some of the brightest and most exciting voices writing today - tell of determination, endeavour and perseverance against the odds. They range across wildly different contexts and cultures, from the epic to the intimate, in fiction and non-fiction, illustrating and illuminating the outer limits of human character and achievement.\"--Publisher description.
BOOK
Health Care Coverage under the Affordable Care Act — A Progress Report
The Affordable Care Act encourages health insurance coverage through federal and state exchanges, Medicaid expansion, and other regulations that expand coverage. The authors estimate that so far 20 million Americans have gained coverage through one of these mechanisms.
With politicians and pundits clamoring in the background, the first open-enrollment period — created by the Affordable Care Act (ACA) for Americans seeking insurance coverage in the new individual marketplaces — came to a close on March 31. There were last-minute extensions by the Department of Health and Human Services and by certain states, but for most insurance seekers, March 31 was the last chance to enroll through the individual marketplaces until the next open-enrollment period launches in November.
Americans who did not have qualified health insurance when open enrollment ended and who do not qualify for an exemption will . . .
Journal Article
The Affordable Care Act at 10 Years — Its Coverage and Access Provisions
The Affordable Care Act (ACA) was signed into law 10 years ago. This first of two Health Policy Reports reviewing the challenges and successes of the law focuses on the provisions of the law that expanded coverage. The ACA has reduced the number of Americans who are uninsured and the out-of-pocket health care costs for those with low incomes.
Journal Article
Did The ACA Lower Americans' Financial Barriers To Health Care?
The Affordable Care Act was designed to provide financial protection to Americans in their use of the health care system. This required addressing two intertwined problems: cost barriers to accessing coverage and care, and barriers to comprehensive risk protection provided by insurance. We reviewed the evidence on whether the law was effective in achieving these goals. We found that the Affordable Care Act generated substantial, widespread improvements in protecting Americans against the financial risks of illness. The coverage expansions reduced uninsurance rates, especially relative to earlier forecasts; improved access to care; and lowered out-of-pocket spending. The insurance market reforms also made it easier for people to get and stay enrolled in coverage and ensured that those who were insured had true financial risk protection. But subsequent court decisions and congressional and executive branch actions have left millions uninsured and allowed the risk of inadequate insurance to resurface.
Journal Article
Unwinding Continuous Medicaid Enrollment
At the beginning of the Covid pandemic, legislation ensured that Medicaid beneficiaries would remain enrolled until the public health emergency ended. What will happen now that the Biden administration has announced that it will end in May?
Journal Article
Masses and decay constants of the η and η′ mesons from lattice QCD
A
bstract
We determine the masses, the singlet and octet decay constants as well as the anomalous matrix elements of the
η
and
η′
mesons in
N
f
= 2 + 1 QCD. The results are obtained using twenty-one CLS ensembles of non-perturbatively improved Wilson fermions that span four lattice spacings ranging from
a
≈ 0
.
086 fm down to
a
≈ 0
.
050 fm. The pion masses vary from
M
π
= 420 MeV to 126 MeV and the spatial lattice extents
L
s
are such that
L
s
M
π
≳ 4, avoiding significant finite volume effects. The quark mass dependence of the data is tightly constrained by employing two trajectories in the quark mass plane, enabling a thorough investigation of U(3) large-
N
c
chiral perturbation theory (ChPT). The continuum limit extrapolated data turn out to be reasonably well described by the next-to-leading order ChPT parametrization and the respective low energy constants are determined. The data are shown to be consistent with the singlet axial Ward identity and, for the first time, also the matrix elements with the topological charge density are computed. We also derive the corresponding next-to-leading order large-
N
c
ChPT formulae. We find
F
8
= 115
.
0(2
.
8) MeV,
θ
8
=
−
25
.
8(2
.
3)°,
θ
0
=
−
8
.
1(1
.
8)° and, in the
MS
¯
scheme for
N
f
= 3,
F
0
(
μ
= 2 GeV) = 100
.
1(3
.
0) MeV, where the decay constants read
F
η
8
=
F
8
cos
θ
8
,
F
η
′
8
=
F
8
sin
θ
8
,
F
η
0
=
−F
0
sin
θ
0
and
F
η
′
0
=
F
0
cos
θ
0
. For the gluonic matrix elements, we obtain
a
η
(
μ
= 2 GeV) = 0
.
0170(10) GeV
3
and
a
η′
(
μ
= 2 GeV) = 0
.
0381(84) GeV
3
, where statistical and all systematic errors are added in quadrature.
Journal Article
Nucleon axial structure from lattice QCD
A
bstract
We present a new analysis method that allows one to understand and model excited state contributions in observables that are dominated by a pion pole. We apply this method to extract axial and (induced) pseudoscalar nucleon isovector form factors, which satisfy the constraints due to the partial conservation of the axial current up to expected discretization effects. Effective field theory predicts that the leading contribution to the (induced) pseudoscalar form factor originates from an exchange of a virtual pion, and thus exhibits pion pole dominance. Using our new method, we can recover this behavior directly from lattice data. The numerical analysis is based on a large set of ensembles generated by the CLS effort, including physical pion masses, large volumes (with up to 96
3
× 192 sites and
Lm
π
= 6
.
4), and lattice spacings down to 0.039 fm, which allows us to take all the relevant limits. We find that some observables are much more sensitive to the choice of parametrization of the form factors than others. On the one hand, the
z
-expansion leads to significantly smaller values for the axial dipole mass than the dipole ansatz (
M
A
z
−
exp
= 1
.
02(10) GeV versus
M
A
dipole
= 1
.
31(8) GeV). On the other hand, we find that the result for the induced pseudoscalar coupling at the muon capture point is almost independent of the choice of parametrization (
g
P
∗
z
−
exp
= 8
.
68(45) and
g
P
∗
dipole
= 8
.
30(24)), and is in good agreement with both, chiral perturbation theory predictions and experimental measurement via ordinary muon capture. We also determine the axial coupling constant
g
A
.
Journal Article
Direct and indirect effects of agricultural land cover on avian biodiversity in eastern Canada
Agriculture is one of the largest threats to global biodiversity. However, most studies have focused only on the direct effects of agriculture on biodiversity, and few have addressed the indirect effects, potentially over or under-estimating the overall impacts of agriculture on biodiversity. The indirect effect is the response not to the agricultural cover types or operations per se, but instead, to the way that agriculture influences the extent and configuration of different types of natural land cover in the landscape. We used structural equation modelling (SEM) to evaluate the direct, indirect, and total effects of agriculture on species richness of three bird guilds: forest birds, shrub-edge birds, and open country birds. We found that forest bird richness was driven by the negative indirect effect of cropland via forest loss. Shrub-edge and open country bird richness increased with the amount of agriculture land covers; however, importantly, we found negative indirect effects of agriculture on both guilds via a reduction in more natural land covers. This latter result highlights how we would have over-estimated the positive effects of agriculture on shrub-edge and open country bird richness had we not measured both direct and indirect effects (i.e., the total effect size is less than the direct effect size). Overall, our results suggest that a bird-friendly agricultural landscape in our region would have forest that is configured to maximize forest edge, and a high proportion of perennial forage within the agricultural portion of the landscape.
Journal Article