170 research outputs found
Against the Lord's anointed: aspects of warfare and baronial rebellion in England and Normandy 1075-1265
Within a framework of arbitrary, monarchical government, baronial rebellion formed one of the principal means both of expressing political discontent and of seeking the redress of grievances. So frequent were its manifestations that hostilities arising from armed opposition to the crown account for a large proportion of warfare waged in England, Normandy and the continental Angevin lands in the eleventh and twelfth centuries. The subject of revolt, lying as it does close to the heart of crownbaronial interaction, is as fundamental as it is multifaceted, embracing many issues of central importance, for example the legal status of revolt and its complex relationship with concepts of treason; the nature of homage and fealty, and the question of the revocability of these bonds in relation to the king; the growth in notions of the crown, of maiestas and the influence of Roman Law; political theories of resistance and obedience; the limitations imposed by ties of kinship and of political sympathy among the baronage on the king's ability to suppress revolt and to enforce effective punishment; and the extent of the king's logistical and military superiority
Against the Lord's anointed: aspects of warfare and baronial rebellion in England and Normandy 1075-1265
Within a framework of arbitrary, monarchical government, baronial rebellion formed one of the principal means both of expressing political discontent and of seeking the redress of grievances. So frequent were its manifestations that hostilities arising from armed opposition to the crown account for a large proportion of warfare waged in England, Normandy and the continental Angevin lands in the eleventh and twelfth centuries. The subject of revolt, lying as it does close to the heart of crownbaronial interaction, is as fundamental as it is multifaceted, embracing many issues of central importance, for example the legal status of revolt and its complex relationship with concepts of treason; the nature of homage and fealty, and the question of the revocability of these bonds in relation to the king; the growth in notions of the crown, of maiestas and the influence of Roman Law; political theories of resistance and obedience; the limitations imposed by ties of kinship and of political sympathy among the baronage on the king's ability to suppress revolt and to enforce effective punishment; and the extent of the king's logistical and military superiority
Use of antihistamine medications during early pregnancy and selected birth defects: The National Birth Defects Prevention Study, 1997–2011
Background: It is estimated that approximately 10–15% of pregnant women report antihistamine use during pregnancy. Although antihistamines are generally considered safe during pregnancy, results from published studies are inconsistent. Methods: Using a case–control study design we analyzed 41,148 pregnancies (30,091 cases and 11,057 controls) from the National Birth Defects Prevention Study (1997–2011). Logistic regression models were used to estimate odds ratios (OR) and 95% confidence intervals for 64 birth defect groupings in relation to early pregnancy exposure to 14 distinct antihistamines. Models were adjusted for maternal age, race, parity, education level, prenatal care, folic acid use, smoking and alcohol use, and study site. Results: Approximately 13% of cases and controls were exposed to an antihistamine during early pregnancy. Analyses were restricted to those defects where more than five cases were exposed to the antihistamine of interest, generating 340 analyses which yielded 20 (5.9%) significant positive associations (adjusted ORs ranging from 1.21 to 4.34). Conclusions: Only a few of our findings were consistent with previous studies. There is a lack of strong evidence to conclude that birth defects are associated with exposure to antihistamines during early pregnancy
Suppression of forward dilepton production from an anisotropic quark-gluon plasma
We calculate the rapidity dependence of leading-order medium dilepton yields
resulting from a quark-gluon plasma which has a local time-dependent anisotropy
in momentum space. We present a phenomenological model which includes temporal
evolution of the plasma anisotropy parameter, xi, and the hard momentum scale,
p_hard. Our model interpolates between 1+1 dimensional collisionally-broadened
expansion at early times and 1+1 dimensional ideal hydrodynamic expansion at
late times. Using our model, we find that at LHC energies, forward high-energy
medium dilepton production would be suppressed by up to a factor of 3 if one
assumes an isotropization/thermalization time of 2 fm/c. Therefore, it may be
possible to use forward dilepton yields to experimentally determine the time of
onset of locally isotropic hydrodynamic expansion of the quark-gluon plasma as
produced in ultrarelativistic heavy-ion collisions.Comment: 12 pages, 5 figure
The First Magnetic Fields
We review current ideas on the origin of galactic and extragalactic magnetic
fields. We begin by summarizing observations of magnetic fields at cosmological
redshifts and on cosmological scales. These observations translate into
constraints on the strength and scale magnetic fields must have during the
early stages of galaxy formation in order to seed the galactic dynamo. We
examine mechanisms for the generation of magnetic fields that operate prior
during inflation and during subsequent phase transitions such as electroweak
symmetry breaking and the quark-hadron phase transition. The implications of
strong primordial magnetic fields for the reionization epoch as well as the
first generation of stars is discussed in detail. The exotic, early-Universe
mechanisms are contrasted with astrophysical processes that generate fields
after recombination. For example, a Biermann-type battery can operate in a
proto-galaxy during the early stages of structure formation. Moreover, magnetic
fields in either an early generation of stars or active galactic nuclei can be
dispersed into the intergalactic medium.Comment: Accepted for publication in Space Science Reviews. Pdf can be also
downloaded from http://canopus.cnu.ac.kr/ryu/cosmic-mag1.pd
Evolution of the differential transverse momentum correlation function with centrality in Au+Au collisions at GeV
We present first measurements of the evolution of the differential transverse
momentum correlation function, {\it C}, with collision centrality in Au+Au
interactions at GeV. {\it C} exhibits a strong dependence
on collision centrality that is qualitatively similar to that of number
correlations previously reported. We use the observed longitudinal broadening
of the near-side peak of {\it C} with increasing centrality to estimate the
ratio of the shear viscosity to entropy density, , of the matter formed
in central Au+Au interactions. We obtain an upper limit estimate of
that suggests that the produced medium has a small viscosity per unit entropy.Comment: 7 pages, 4 figures, STAR paper published in Phys. Lett.
Fluvial lateral environments in Río de La Plata basin: effects of hydropower damming and eutrophication
Characterization of large area APDs for the EXO-200 detector
EXO-200 uses 468 large area avalanche photodiodes (LAAPDs) for detection of
scintillation light in an ultra-low-background liquid xenon (LXe) detector. We
describe initial measurements of dark noise, gain and response to xenon
scintillation light of LAAPDs at temperatures from room temperature to 169K -
the temperature of liquid xenon. We also describe the individual
characterization of more than 800 LAAPDs for selective installation in the
EXO-200 detector.Comment: 10 pages, 17 figure
Stroop Color-Word Interference Test: Normative data for Spanish-speaking pediatric population
Labeling Preschoolers as Learning Disabled: A Cautionary Position
The purpose of this article is to explore the issues concerning the adaptation of school-based service delivery concepts for use in early childhood special education programs. The use of categorical labels for determining eligibility for preschool children is not required by law—and may be detrimental. The following concerns are discussed: (a) definitional issues in learning disabilities versus low achievement, (b) the dangers of labeling and low expectation sets, (c) repeated failure to demonstrate movement through a continuum of services (particularly to least restrictive environments), and (d) the efficacy of early intervention and school-based special services for those with mild or suspected developmental disabilities. Research is reviewed concerning definitional and assessment issues utilizing learning disabilities as a construct. Alternatives for describing the characteristics of young children who are significantly at risk or developmentally delayed are provided.Yeshttps://us.sagepub.com/en-us/nam/manuscript-submission-guideline
- …