12,646,479 research outputs found
AGENDA: Arizona v. California at 50: The Legacy and Future of Governance, Reserved Rights, and Water Transfers
The Colorado River is an economic, environmental and cultural lifeline of the southwestern United States, and the allocation of its scarce waters are a source of ongoing controversy. This year marks the 50th anniversary of the Supreme Court decision in Arizona v. California. While the case was an important landmark in the still-evolving relationship between these two Lower Basin states, it remains most relevant today by the way in which it clarified federal rights and responsibilities. This is especially true in the areas of federal (including tribal) reserved rights, the role of the Interior Secretary in Lower Basin water management, and the ability of Congress to allocate/reallocate water. It also modified the Upper Basin/Lower Basin relationship in important ways, especially in the treatment of Lower Basin tributaries. Moving forward, several types of potential management innovations—in areas such as governance and water transfers—will hinge on the framework outlined by this decision
Swift J164449.3+573451 event: generation in the collapsing star cluster?
We discuss the multiband energy release in a model of a collapsing galactic
nucleus, and we try to interpret the unique super-long cosmic gamma-ray event
Swift J164449.3+573451 (GRB 110328A by early classification) in this scenario.
Neutron stars and stellar-mass black holes can form evolutionary a compact
self-gravitating subsystem in the galactic center. Collisions and merges of
these stellar remnants during an avalanche contraction and collapse of the
cluster core can produce powerful events in different bands due to several
mechanisms. Collisions of neutron stars and stellar-mass black holes can
generate gamma-ray bursts (GRBs) similar to the ordinary models of short GRB
origin. The bright peaks during the first two days may also be a consequence of
multiple matter supply (due to matter release in the collisions) and accretion
onto the forming supermassive black hole. Numerous smaller peaks and later
quasi-steady radiation can arise from gravitational lensing, late accretion of
gas onto the supermassive black hole, and from particle acceleration by shock
waves. Even if this model will not reproduce exactly all the Swift
J164449.3+573451 properties in future observations, such collapses of galactic
nuclei can be available for detection in other events.Comment: 7 pages, replaced by the final versio
V+jets production at the CMS
Measurements of Vector Boson production in association with jets are
presented, using p-p collision data at sqrt{s} = 7 TeV. The measurements
presented include Z + jets azimuthal correlations, event shapes, vector boson +
jets differential cross section measurements, hard double-parton scattering
using W + jets events and electroweak Z + forward - backward jet production.Comment: 7 pages, 11 figure
Electromagnetic quarkonium decays at order v^7
We compute S-wave and P-wave electromagnetic quarkonium decays at order v^7
in the heavy-quark velocity expansion. In the S-wave case, our calculation
confirms and completes previous findings. In the P-wave case, our results are
in disagreement with previous ones; in particular, we find that two matrix
elements less are needed. The cancellation of infrared singularities in the
matching procedure is discussed.Comment: Eq. (A.1) and following comment corrected, rest of the paper
unchange
Mobile journalism at RTP: production of news - using the smartphone as a tool for news production
The goal of this paper is to show case a practical resolution for the integration a ta greater scale of the Mobile Journalism philosophy, both in the production and in the consumption of news. The production-side concerns the use of the smartphone and other light equipment in the production of news, while the consumption-side concerns how the news are displayed and consumed on a smartphone. This work project was realized in syndication with RTP and was adjust and tailored to its respective needs, resources and objectives. In order to achieve this goal, several analysis were developed to address the external and internal environment, identifying the opportunities and threats of the broad casting industry and the strenggic recommendations that ensures a work able dissemination plan for Mobile Journalism
V+A and V-A Correlators at Large NC: From OPE to Resonance Theory
The spin-1 correlators are analysed in this talk through a large NC resonance
theory. The matching to perturbative QCD and the first terms in the OPE
constrains the hadronic parameters. A further sum-rule analysis shows the wider
range of validity of the resonance description, which can help to discern the
proper structure of the QCD mass spectrum.Comment: 6 pages, 2 figures, proceedings of the talk given at HSQCD 2005, St.
Petersburg, Russia, September 20-24 200
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