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"Moore, D"
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American Imperialism and the State, 1893-1921
\"How did the acquisition of overseas colonies affect the development of the American state? How did the constitutional system shape the expansion and governance of American empire? American Imperialism and the State offers a new perspective on these questions by recasting American imperial governance as an episode of state building. Colin Moore argues that the empire was decisively shaped by the efforts of colonial state officials to achieve greater autonomy in the face of congressional obstruction, public indifference, and limitations on administrative capacity. Drawing on extensive archival research, the book focuses principally upon four cases of imperial governance--Hawai'i, the Philippines, the Dominican Republic, and Haiti--to highlight the essential tension between American mass democracy and imperial expansion\"-- Provided by publisher.
Book
QCD shear viscosity at (almost) NLO
A
bstract
We compute the shear viscosity of QCD with matter, including almost all next-to-leading order corrections — that is, corrections suppressed by one power of
g
relative to leading order. We argue that the still missing terms are small. The next-to-leading order corrections are large and bring
η/s
down by more than a factor of 3 at physically relevant couplings. The perturbative expansion is problematic even at
T
≃ 100 GeV. The largest next-to-leading order correction to
η/s
arises from modifications to the
q
^
parameter, which determines the rate of transverse momentum diffusion. We also explore quark number diffusion, and shear viscosity in pure-glue QCD and in QED.
Journal Article
EMPulse2
\"Adele Michaels had found safe haven from her abusive ex-husband at the Rocky Mountains Geo-Domes resort. But when a nuclear electro-magnetic-pulse took down the entire power grid, multiple warheads turned the east coast into an unstable hot zone. Adele may be safe at the resort, but she's also stranded far from home and family. Now she must undertake a long and perilous journey from Montana to Michigan, and two of her new friends aren't about to let her make the journey alone. Faced with both friend and foe, the travelers find themselves on a dangerous path. Will finding her mother be enough for them to start rebuilding their new lives?\"--Back cover.
Book
Tree species partition N uptake by soil depth in boreal forests
It is recognized that the coexistence of herbaceous species in N-depleted habitats can be facilitated by N partitioning; however, the existence of such a phenomenon for trees has not yet been demonstrated. Here, we show from both foliage and soil
15
N natural abundance values and from a 12-year in situ
15
N addition experiment, that black spruce (
Picea mariana
) and jack pine (
Pinus banksiana
), two widespread species of the Canadian boreal forest, take up N at different depths. While black spruce takes up N from the organic soil, jack pine acquires it deeper within the highly N-depleted mineral soil. Systematic difference in foliar
15
N natural abundance between the two species across seven sites distributed throughout the eastern Canadian boreal forest shows that N spatial partitioning is a widespread phenomenon. Distinct relationships between δ
15
N and N concentration in leaves of both species further emphasize their difference in N acquisition strategies. This result suggests that such complementary mechanisms of N acquisition could facilitate tree species coexistence in such N-depleted habitats and could contribute to the positive biodiversity-productivity relationship recently revealed for the eastern Canadian boreal forest, where jack pine is present. It also has implications for forest management and provides new insights to interpret boreal forest regeneration following natural or anthropogenic perturbations.
Journal Article
Bounding the QCD Equation of State with the Lattice
A
bstract
The equation of state of QCD matter at high densities is relevant for neutron star structure and for neutron star mergers and has been a focus of recent work. We show how lattice QCD simulations, free of sign problems, can provide an
upper bound
on the pressure as a function of quark chemical potentials. We show that at large chemical potentials this bound should become quite sharp; the difference between the upper bound on the pressure P
PQ
and the true pressure
P
is of order P
PQ
− P
=
O
(
α
s
3
P
). The corrections arise from a single Feynman diagram; its calculation would render remaining corrections
O
(
α
s
4
P
).
Journal Article
Mastering GUI programming with Python : develop impressive cross-platform GUI applications with PyQt
The book will aim to tackle this problem by providing a comprehensive walkthrough of GUI development with PyQt5. Beginning with a brief introduction to PyQt5, the book will take you on a journey towards building stunning GUIs. Finally, you will learn various optimization techniques to improve your application's performance and functionality.
Book
Thermalization in weakly coupled nonabelian plasmas
A
bstract
We investigate how relativistic, nonabelian plasmas approach equilibrium in a general context. Our treatment is entirely parametric and for small Yang-Mills coupling
α
. First we study isotropic systems with an initially nonequilibrium momentum distribution. We consider both the case of initially very high occupancy and initially very low occupancy. Then we consider systems which are anisotropic. We consider both weak anisotropy and large anisotropy, and allow the occupancy to be parametrically large or small. Writing the typical momentum of an initial excitation as
Q
and the final temperature as
T
final
, full equilibration occurs in a time
for
T
final
>
Q
, and
for
T
final
<
Q
, unless the initial system is sufficiently anisotropic and
, in which 7 case equilibration occurs somewhat faster,
.
Journal Article
Hot and dense QCD shear viscosity at leading log
A
bstract
The leading-order weak-coupling shear viscosity of QCD was computed almost 20 years ago, and the extension to next-to-leading order is 4 years old. But these results have never been applied at finite baryon chemical potential
μ
, despite the fact that intermediate-energy heavy ion collisions and merging neutron stars may explore the Quark-Gluon Plasma in a regime where baryon chemical potentials are large. Here we extend the leading-log shear viscosity calculation to finite
μ
, and we argue that the convergence of the weak-coupling expansion, while questionable for achievable plasmas, should be better at
μ > T
than at
μ
= 0.
Journal Article