41,081 research outputs found
TRANSFORMATION OF FALLOW SYSTEMS UNDER POPULATION PRESSURE
In a fallow-cultivation model with biomass regeneration, we find the population-poverty-degradation linkage via the discount rate: slight increases in the discount rate result in increased cropping frequency and much lower soil fertility. Aggregating gives transitions equation declining in fertility and increasing in the fallow:cultivation ratio.Land Economics/Use,
Electronic access to documents and publications on the European Union: The role of the Archive of European Integration
The Archive of European Integration (AEI) at http://aei.pitt.edu is an electronic Open Access repository and archive for key research materials on the topic of European integration and unification which have traditionally existed only in paper format and have been difficult for researchers to find and use. Factors leading to the creation of the AEI at the University of Pittsburgh are described and a detailed overview of the contents of the AEI and their sources is provided, including official EU documents and a wealth of grey literature about the EU. The role of the AEI in providing access to EU research materials and the relationship of the AEI to other online sources is explored. Projected growth and enhancement of the AEI is described
A log-free zero-density estimate and small gaps in coefficients of -functions
Let be the Rankin--Selberg -function attached
to automorphic representations and . Let and
denote the contragredient representations associated to
and . Under the assumption of certain upper bounds for
coefficients of the logarithmic derivatives of and
, we prove a log-free zero-density
estimate for which generalises a result due to
Fogels in the context of Dirichlet -functions. We then employ this log-free
estimate in studying the distribution of the Fourier coefficients of an
automorphic representation . As an application we examine the
non-lacunarity of the Fourier coefficients of a modular newform
of weight , level ,
and character . More precisely for and a prime , set
, where We prove that for some
Creative Disruption: Sabbaticals for Capacity Building and Leadership Development in the Nonprofit Sector
Based on a survey, examines the outcomes of sabbaticals for nonprofit leaders, their organizations, leadership transitions, and sponsoring foundations, as well as lessons learned and challenges. Includes case studies
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