5,668 research outputs found
Uniform existence of the integrated density of states for models on \ZZ^d
We provide an ergodic theorem for certain Banach-space valued functions on
structures over \ZZ^d, which allow for existence of frequencies of finite
patterns. As an application we obtain existence of the integrated density of
states for associated finite-range operators in the sense of convergence of the
distributions with respect to the supremum norm. These results apply to various
examples including periodic operators, percolation models and nearest-neighbour
hopping on the set of visible points. Our method gives explicit bounds on the
speed of convergence in terms of the speed of convergence of the underlying
frequencies. It uses neither von Neumann algebras nor a framework of random
operators on a probability space.Comment: 15 page
TRADEOFFS BETWEEN RURAL DEVELOPMENT POLICIES AND FOREST PROTECTION: SPATIALLY-EXPLICIT MODELING IN THE CENTRAL HIGHLANDS OF VIETNAM
Alleviating rural poverty remains an important objective of development policy in many areas of the world. However, traditional means of increasing rural livelihoods such as increased investments in agricultural intensification measures can have disastrous impacts on natural resources such as forests by greatly increasing incentives for clearing. This paper contains a spatially-explicit model of land use in the Dak Lak province in the Central Highlands of Vietnam. Land use is modeled using a reduced-form multinomial logit model, and policy simulations are conducted. These simulations demonstrate that the adoption of yield-increasing inputs requires concomitant forest protection policies, both in terms of forest area and spatial configuration.International Development,
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