- Full text PDF available (10)
- This year (0)
- Last 5 years (1)
- Last 10 years (8)
Data Fusion is the combination of a number of independent search results, relating to the same document collection, into a single result to be presented to the user. A number of probabilistic data fusion models have been shown to be effective in empirical studies. These typically attempt to estimate the probability that particular documents will be… (More)
North American gypsy moths disperse as newly hatched larvae on wind currents in a behavior called ballooning. Because ballooning occurs before neonates begin to feed, resources used in dispersal are limited to those carried over from the egg. We show that nutritional experience of the maternal parent can influence the tendency of offspring to disperse, and… (More)
superb research assistance. The views expressed herein are those of the author(s) and do not necessarily reflect the views of the National Bureau of Economic Research. to exceed two paragraphs, may be quoted without explicit permission provided that full credit, including © notice, is given to the source.
A determination was made of the differences in the utilization of energy by laboratory reared larval Choristoneura fumiferana fed either balsam fir or white spruce foliage. This enabled us to quantitatively measure the quality of these foliages vis a vis the spruce budworm. The larval strategy was to feed rapidly and develop quickly. Development time was… (More)
We investigate the roots of one of the world's most pernicious forms of exploitation: child sol-diering. We review a range of theories and show that most can be captured by a principal-agent model that incorporates punishments, indoctrination, and age-varying productivity. We argue it is almost always optimal to coerce rather than reward children, and show… (More)
The absorption of ouabain and digitoxin into the gut of the milkweed bug was studied by a tissue-accumulation technique. Uptake of both compounds obeyed diffusion kinetics, was Na+ sensitive, and for digitoxin, was concentrative.
The Supervised Machine Learning task of classification has parallels with Information Retrieval (IR): in each case, items (documents in the case of IR) are required to be categorised into discrete classes (relevant or non-relevant). Thus a parallel can also be drawn between classi-fier ensembles, where evidence from multiple classifiers are combined to… (More)
Through a comparison of two rural Tanzanian districts this paper traces the effects of a humanitarian influx—the arrival of refugees and international relief—on the economic practices of the host population in one Western Tanzanian district (Kasulu). It argues that, despite popular and Government claims to the contrary, there is little evidence that the… (More)
When females of the eulophid parasiteEdovum puttleri were exposed to ann-hexane wash of eggs of the Colorado potato beetle,Leptinotarsa decemlineata, their responses indicated that the eggs contained a kairomone which elicited host-finding and host-acceptance behaviors. The hostfinding responses included an increased amount of time searching glass beads… (More)