8,038 research outputs found
Research in gas-surface interaction, 1964-65. part iii- surface contamination final report
Solid surface preparation and characterization apparatus - interaction of gas molecules and solid surface applied to surface contamination researc
Fragmentation into b hadrons
The fragmentation process of b quarks into b hadrons, produced in Z decays or pp collisions, cannot be fully described perturbatively but relies on phenomenological models. To test and tune the parameters of these models, precise experimental measurements have to be performed. Furthermore, properties of the b hadron production process affect many analyses dealing with decays of b hadrons. Thus, precise knowledge of the fragmentation properties allows more accurate measurements in this field. New results for the b fragmentation function and b hadron production fractions have been submitted to this conference and will be summarised in this article. Combined results for b hadron production rates will also be given. (8 refs)
Research on gas-surface interactions, 1966-1967. Part 1 - Project summary final report, 11 Aug. 1966 - 11 Oct. 1967
High intensity shock tube driven molecular beam for gas-surface interaction
B spectroscopy using all-to-all propagators
We measure the ground and excited states for B mesons in the static limit
using maximally variance reduced estimators for light quark propagators.
Because of the large number of propagators we are able to measure accurately
also orbitally excited P, D and F states. We also present some results for
Lambda_b.Comment: 3 pages, 3 figures. Talk presented at Lattice '97 by J. Peis
Beyond Brooke Group: Bringing Reality to the Law of Predatory Pricing
This Feature offers a roadmap for bringing and deciding predatory pricing cases under the Supreme Court’s restrictive Brooke Group decision. Brooke Group requires a plaintiff to show that the defendant set a price below cost and had a sufficient likelihood of recouping its investment in predation. This framework, which was adopted without any contested presentation of its merits, has endured despite its flaws. Beyond this framework, the Court opined in dicta that predation is implausible.
We identify points of flexibility within the Court’s framework that permit an empirically grounded evaluation of the predation claim. Under the price-cost test, a plaintiff has leeway to select an appropriate measure of cost, including incremental cost. In considering recoupment, Brooke Group’s skeptical dicta should be confined to the particular market structure and theory of recoupment analyzed in that case. The dicta do not apply, for example, to a monopolist who recoups by earning a reputation for predation. A further reason to confine Brooke Group’s dicta is the Court’s highly unusual reweighing of the evidence presented at trial. As we explain using new historical research, this was not the Court’s initial plan after oral argument, but Justice Kennedy switched his vote. We also make the case against extending the price-cost test to more complex pricing strategies, such as loyalty discounts, in which the motivation for a stringent rule—to avoid costly false positives—has little purchase
Beyond Brooke Group: Bringing Reality to the Law of Predatory Pricing
This Feature offers a roadmap for bringing and deciding predatory pricing cases under the Supreme Court’s restrictive Brooke Group decision. Brooke Group requires a plaintiff to show that the defendant set a price below cost and had a sufficient likelihood of recouping its investment in predation. This framework, which was adopted without any contested presentation of its merits, has endured despite its flaws. Beyond this framework, the Court opined in dicta that predation is implausible.
We identify points of flexibility within the Court’s framework that permit an empirically grounded evaluation of the predation claim. Under the price-cost test, a plaintiff has leeway to select an appropriate measure of cost, including incremental cost. In considering recoupment, Brooke Group’s skeptical dicta should be confined to the particular market structure and theory of recoupment analyzed in that case. The dicta do not apply, for example, to a monopolist who recoups by earning a reputation for predation. A further reason to confine Brooke Group’s dicta is the Court’s highly unusual reweighing of the evidence presented at trial. As we explain using new historical research, this was not the Court’s initial plan after oral argument, but Justice Kennedy switched his vote. We also make the case against extending the price-cost test to more complex pricing strategies, such as loyalty discounts, in which the motivation for a stringent rule—to avoid costly false positives—has little purchase
Physics Analysis Expert PAX: First Applications
PAX (Physics Analysis Expert) is a novel, C++ based toolkit designed to
assist teams in particle physics data analysis issues. The core of PAX are
event interpretation containers, holding relevant information about and
possible interpretations of a physics event. Providing this new level of
abstraction beyond the results of the detector reconstruction programs, PAX
facilitates the buildup and use of modern analysis factories. Class structure
and user command syntax of PAX are set up to support expert teams as well as
newcomers in preparing for the challenges expected to arise in the data
analysis at future hadron colliders.Comment: Talk from the 2003 Computing in High Energy and Nuclear Physics
(CHEP03), La Jolla, Ca, USA, March 2003, 7 pages, LaTeX, 10 eps figures. PSN
THLT00
Potentially preventable readmissions - narrowing identification of patients at risk of unplanned readmission
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