1,380 research outputs found
Use of LANDSAT imagery for wildlife habitat mapping in northeast and east central Alaska
The author has identified the following significant results. Two scenes were analyzed by applying an iterative cluster analysis to a 2% random data sample and then using the resulting clusters as a training set basis for maximum likelihood classification. Twenty-six and twenty-seven categorical classes, respectively resulted from this process. The majority of classes in each case were quite specific vegetation types; each of these types has specific value as moose habitat
Application of ERTS-1 imagery to the study of caribou movements and winter dispersal in relation to prevailing snowcover
There are no author-identified significant results in this report
Application of ERTS-1 imagery to the study of caribou movements and winter dispersal in relation to prevailing snowcover
There are no author-identified significant results in this report
Application of ERTS-1 imagery to the study of caribou movements and winter dispersal in relation to prevailing snowcover
The author has identified the following significant results. A multiband classification scheme was applied to ERTS-1 MSS digital tape data in a portion of the Yukon Flats area. Primary analytic objectives of mapping the extent of recent wildfire burns and mature forest were realized illustrating application to moose and caribou biology. Additionally, the analysis indicated the presence of new lakes as well as disappearance of lakes present in 1956. Because this is an important waterfowl production area, similar analyses may have significant application potential to waterfowl biology for rapid updating of habitat information. Further field confirmation of this finding is required
Use of LANDSAT imagery for wildlife habitat mapping in northeast and eastcentral Alaska
The author has identified the following significant results. There is strong indication that spatially rare feature classes may be missed in clustering classifications based on 2% random sampling. Therefore, it seems advisable to augment random sampling for cluster analysis with directed sampling of any spatially rare features which are relevant to the analysis
Application of ERTS imagery to the study of caribou movements and winter habitat
There are no author-identified significant results in this report
Use of LANDSAT imagery for wildlife habitat mapping in northeast and east central Alaska
There are no author-identified significant results in this report
Entanglement loss in molecular quantum-dot qubits due to interaction with the environment
We study quantum entanglement loss due to environmental interaction in a
condensed matter system with a complex geometry relevant to recent proposals
for computing with single electrons at the nanoscale. We consider a system
consisting of two qubits, each realized by an electron in a double quantum dot,
which are initially in an entangled Bell state. The qubits are widely separated
and each interacts with its own environment. The environment for each is
modeled by surrounding double quantum dots placed at random positions with
random orientations. We calculate the unitary evolution of the joint system and
environment. The global state remains pure throughout. We examine the time
dependence of the expectation value of the bipartite Clauser-Horne-Shimony-Holt
(CHSH) and Brukner-Paunkovi\'c-Rudolph-Vedral (BPRV) Bell operators and explore
the emergence of correlations consistent with local realism. Though the details
of this transition depend on the specific environmental geometry, we show how
the results can be mapped on to a universal behavior with appropriate scaling.
We determine the relevant disentanglement times based on realistic physical
parameters for molecular double-dots.Comment: 14 pages, 3 figure
Arable land allocations as a winter forage reserve for cattle in communal areas of central eastern Cape Province, South Africa
Emergence of a confined state in a weakly bent wire
In this paper we use a simple straightforward technique to investigate the
emergence of a bound state in a weakly bent wire. We show that the bend behaves
like an infinitely shallow potential well, and in the limit of small bending
angle and low energy the bend can be presented by a simple 1D delta function
potential.Comment: 4 pages, 3 Postscript figures (uses Revtex); added references and
rewritte
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