17,874 research outputs found
State of the Library, 2010
Provides a summary of the last year at the UIUC University Library and looks ahead to future challenges and opportunitiesunpublishednot peer reviewe
Carpe Diem: Transforming Services in Academic Libraries
Amid a global economic crisis and spurred, in my country, by a great influx of funding intended to stimulate the economy quickly, librarians are confronted by other factors that could have transformative powers ??? if they choose to seize the opportunity. This paper focuses on the future of academic library services and the opportunities that await those who reject hunkering down in troubled times.unpublishednot peer reviewe
Six causes of the credit crunch
Bank lending typically moves with the business cycle. In Texas from 1987 to 1992, however, bank loans declined while nonagricultural employment rose. Robert T. Clair and Paula Tucker consider this evidence of a constrained supply of bank loans, or credit crunch. ; Clair and Tucker find that multiple factors have reduced banks' willingness and ability to supply loans. The resolution of failed banks and thrifts, tightening of bank examination standards, new capital requirements, new regulations and increased enforcement of old regulations, and increased exposure to lawsuits have each had an effect. Many of these regulatory changes where made to address important economic and social goals, but their side effects, often unintended and perhaps unavoidable, have been to reduce bank lending in the short run.Credit
The stopping of swift protons in matter and its implication for astrophysical fusion reactions
The velocity dependence of the stopping power of swift protons and deuterons
in low energy collisions is investigated. At low projectile energies the
stopping is mainly due to nuclear stopping and charge exchange of the electron.
The second mechanism dominates after Ep >=200 eV. A dynamical treatment of the
charge exchange mechanism based on two-center electronic wavefunctions yields
very transparent results for the exchange probability. We predict that the
stopping cross sections vary approximately as v to the 1.35 power for
projectile protons on hydrogen targets in the 1 keV energy region.Comment: 4 figure
Following the Mobile Student: Can We Develop the Capacity for a Comprehensive Database to Assess Student Progression?
Presents a study of state-level databases on postsecondary student retention and completion rates and the feasibility of tracking students across state lines. Outlines challenges and recommendations, including establishing a common reporting standard
Charge confinement and Klein tunneling from doping graphene
In the present work, we investigate how structural defects in graphene can
change its transport properties. In particular, we show that breaking of the
sublattice symmetry in a graphene monolayer overcomes the Klein effect, leading
to confined states of massless Dirac fermions. Experimentally, this corresponds
to chemical bonding of foreign atoms to carbon atoms, which attach themselves
to preferential positions on one of the two sublattices. In addition, we
consider the scattering off a tensor barrier, which describes the rotation of
the honeycomb cells of a given region around an axis perpendicular to the
graphene layer. We demonstrate that in this case the intervalley mixing between
the Dirac points emerges, and that Klein tunneling occurs.Comment: 11 pages, 5 figure
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