DePaul University

About: DePaul University is a education organization based out in Chicago, Illinois, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 5658 authors who have published 11562 publications receiving 295257 citations.

$B$- and $D$-meson decay constants from three-flavor lattice QCD

Abstract: We calculate the leptonic decay constants of B_{(s)} and D_{(s)} mesons in lattice QCD using staggered light quarks and Fermilab bottom and charm quarks. We compute the heavy-light meson correlation functions on the MILC asqtad-improved staggered gauge configurations which include the effects of three light dynamical sea quarks. We simulate with several values of the light valence- and sea-quark masses (down to ~m_s/10) and at three lattice spacings (a ~ 0.15, 0.12, and 0.09 fm) and extrapolate to the physical up and down quark masses and the continuum using expressions derived in heavy-light meson staggered chiral perturbation theory. We renormalize the heavy-light axial current using a mostly nonperturbative method such that only a small correction to unity must be computed in lattice perturbation theory and higher-order terms are expected to be small. We obtain f_{B^+} = 196.9(8.9) MeV, f_{B_s} = 242.0(9.5) MeV, f_{D^+} = 218.9(11.3) MeV, f_{D_s} = 260.1(10.8) MeV, and the SU(3) flavor-breaking ratios f_{B_s}/f_{B} = 1.229(26) and f_{D_s}/f_{D} = 1.188(25), where the numbers in parentheses are the total statistical and systematic uncertainties added in quadrature.

Emerging Structures in Entrepreneurship Education: Curricular Designs and Strategies

Abstract: Analyzes the history of entrepreneurship education and presents frameworks for the development of entrepreneurship education courses and programs. In evaluating whether entrepreneurship has become an established discipline, the following areas are considered: systematic theory and an established body of literature; authority, professional associations, and communication sanction; ethical codes and culture; and career opportunities for graduates. At the time of this study, there were at least 12 academic journals and 20 annual conferences focused on entrepreneurship. In addition career opportunities included positions with newly established firms or as entrepreneurial executives with established firms. While entrepreneurship was recognized as a discipline and a career, business and management education was slow to react. Entrepreneurship education has developed along two dimensions: the absolute number of entrepreneurship courses and the degree of integration of the entrepreneurship courses. Using these dimensions, two frameworks are presented. The first framework, a matrix of these two dimensions, identifies four optimal combinations. The second framework is built upon two paths: stages of transition in a firm and a functional approach. As entrepreneurship programs are developed, multiple alternative structures and learning mechanisms are needed to meet the needs of a variety of individuals. (SRD)