Results 1 to 10 of about 525,400 (298)

A framework for adapting survey design through time for wildlife population assessment [PDF]

, 2012
Sampling strategies for monitoring the status and trends in wildlife populations are often determined before the first survey is undertaken. However, there may be little information about the distribution of the population and so the sample design may be
Underwood, F. M.
core   +1 more source

Replicability of data collected for empirical estimation of relative pollen productivity [PDF]

, 2016
The effects of repeated survey and fieldwork timing on data derived from a recently proposed standard field methodology for empirical estimation of relative pollen productivity (RPP) have been tested.
Bunting, M. Jane, Farrell, Michelle, Middleton, Richard   +2 more
core   +1 more source

Attenuation of species abundance distributions by sampling [PDF]

, 2015
Quantifying biodiversity aspects such as species presence/ absence, richness and abundance is an important challenge to answer scientific and resource management questions.
Darnell, Ross, Shimadzu, Hideyasu
core   +2 more sources

Efficient analysis in planet transit surveys [PDF]

, 2005
With the growing number of projects dedicated to the search for extrasolar planets via transits, there is a need to develop fast, automatic, robust methods with a statistical background in order to efficiently do the analysis.
A. Schwarzenberg-Czerny, Beaulieu, Beaulieu, Beaulieu, Bouchy, Brandt, Carpano, Charbonneau, Claret, Cumming, Davies, Defay, Deming, Doyle, Eadie, Fisher, Fisz, Gregory, Horne, J.-Ph. Beaulieu, Jenkins, Konacki, Kovacs, Lomb, Press, Schwarzenberg-Czerny, Schwarzenberg-Czerny, Schwarzenberg-Czerny, Schwarzenberg-Czerny, Stellingwerf, Struve, Tingley, Tingley, Udalski, Udalski, van Leeuwen, Weldrake, Whittaker   +37 more
core   +4 more sources

Fractional Imputation in Survey Sampling: A Comparative Review [PDF]

, 2015
Fractional imputation (FI) is a relatively new method of imputation for handling item nonresponse in survey sampling. In FI, several imputed values with their fractional weights are created for each missing item.
Kim, Jae Kwang, Kim, Jae Kwang, Yang, Shu   +2 more
core   +4 more sources

The Size and Shape of Voids in Three-Dimensional Galaxy Surveys [PDF]

, 2000
The sizes and shapes of voids in a galaxy survey depend not only on the physics of structure formation, but also on the sampling density of the survey and on the algorithm used to define voids.
Adrian L. Melott, Barbara S. Ryden, Efstathiou G., Einasto J., Fujimoto M., Icke V., Jason D. Schmidt, Kauffmann G., Kauffmann G., Lahav O., Little B., Melott A. L., Sheth R. K., van de Weygaert R., Weinberg D. H., White S. D. M.   +15 more
core   +3 more sources

Optimizing future dark energy surveys for model selection goals [PDF]

, 2011
We demonstrate a methodology for optimizing the ability of future dark energy surveys to answer model selection questions, such as `Is acceleration due to a cosmological constant or a dynamical dark energy model?'.
Andrew R. Liddle, Bassett, Bassett, Bassett, Caldwell, Catherine Watkinson, Chevallier, Cox, David Parkinson, Feroz, Gregory, Hastings, Hobson, Huterer, Jaynes, Jeffreys, Kass, Linder, MacKay, Metropolis, Mukherjee, Mukherjee, Parkinson, Parkinson, Pia Mukherjee, Seo, Skilling, Trotta, Trotta, Trotta   +29 more
core   +1 more source

A simple variance estimator of change for rotating repeated surveys: an application to the EU-SILC household surveys

, 2016
A common problem is to compare two cross-sectional estimates for the same study variable taken on two different waves or occasions, and to judge whether the change observed is statistically significant.
Andersson, Berger, Berger, Berger, Berger, Berger, Birch, Chao, Christine, Demnati, Deville, Deville, Di Meglio, Gambino, Goga, Hansen, Hansen, Horvitz, Hájek, Kalton, Kish, Knottnerus, Nordberg, Oguz-Alper, Osier, Preston, Qualité, R Core Team, Smith, Särndal, Tam, Wood, Wood   +32 more
core   +1 more source

From Workers to Owners: Survey Evidence on the Impact of Property Rights Reforms on Small Farmers in Two Regions in Romania [PDF]

, 2008
In Romania, the 1991 Land Reform marked the beginning of a series of transformations in the ownership structure and the production system in agriculture.
Kim, Annette, Vidican-Sgouridis, Georgeta   +1 more
core   +1 more source

Modeling social networks from sampled data

, 2010
Network models are widely used to represent relational information among interacting units and the structural implications of these relations. Recently, social network studies have focused a great deal of attention on random graph models of networks ...
Gile, Krista J., Handcock, Mark S.
core   +1 more source