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The maximum likelihood parameters estimated in logistic analysis are in terms of a transformation of the original response variable and, although inferences are easily made about the sources of variation in the linearized model using standard procedures applied in regression analysis, the varianc...


Rege, J.E.O.Sherington, J.[A method for estimating sampling variances of predicted probabilities from maximum likelihood estimates in logit response function]A method for estimating sampling variances of predicted probabilities from maximum likelihood estimates in logit response function

Presents a study conducted in five different sites, Debre Berhan, Dejen, Deneba, Tulu Meko and Wereilu in the highlands of Ethiopia, from June 1988 to December 1989, to determine the prevalences of endoparasites of the highland sheep in Ethiopia. Analyses data to determine nematode log egg counts...


Bekele, T.Kasali, O.B.Wolde-Mariam, W.A.[Endoparasite prevalences of the highland sheep in Ethiopia]Endoparasite prevalences of the highland sheep in Ethiopia

Four proximal soil sensors were tested at four smallholder farms in Embu County, Kenya: a portable X-ray fluorescence sensor (PXRF), a mobile phone application for soil color determination by photography, a dual-depth electromagnetic induction (EMI) sensor, and a LED-based soil optical reflectanc...


Piikki, KristinSöderström, MatsEriksson, JanMuturi, John JamleckMuthee, Patrick IreriWetterlind, JohannaLund, Eric[Performance evaluation of proximal sensors for soil assessment in smallholder farms in Embu County, Kenya]Performance evaluation of proximal sensors for soil assessment in smallholder farms in Embu County, Kenya
Cardona Mejía, CésarRodríguez Torres, Isaura VivianaBueno Mondragon, J.M.Tapia, X[Manejo de la mosca blanca o palomilla en los cultivos de frejol y vainita]Manejo de la mosca blanca o palomilla en los cultivos de frejol y vainita
Cardona Mejía, CésarRodríguez Torres, Isaura VivianaBueno Mondragon, J.M.[Manejo de la mosca blanca o palomilla en los cultivos de habichuela y frijol]Manejo de la mosca blanca o palomilla en los cultivos de habichuela y frijol

Presents workshop papers & discussion summaries on the development of low-level aerial survey techniques and presents applications to livestock, wildlife and land-use surveys. Reviews survey designs and sampling procedures as well as problems of bias, levels, from ground survey to satellite image...


Grimsdell, J.J.R.Westley, S.[Low-level aerial survey techniques]Low-level aerial survey techniques

Introduction. Senegal produces up to 150,000 t of fruit, of which 60,000 t are mangoes. Fruit production is important for the Niayes region, where 60% of total production is of mangoes, with citrus production coming next at 24%. Mango losses have become more substantial since the arrival of Bactr...


Ndiaye, O.Vayssières, Jean-FrançoisRey, J.Ndiaye, S.Diedhiou, P.M.Ba, C.T.Diatta, P.[Seasonality and range of fruit fly (Diptera Tephritidae) host plants in orchards in Niayes and the Thies Plateau (Senegal)]Seasonality and range of fruit fly (Diptera Tephritidae) host plants in orchards in Niayes and the Thies Plateau (Senegal)
Autor: Smith, G.E.J.

Discusses the choice of sampling design for low-level aerial surveys, with particular reference to stratification and the choice between systematic and random sampling.


Smith, G.E.J.[Some thoughts on sampling design]Some thoughts on sampling design
Echandi Z, RArregocés, OscarRobayo Vanoy, GGonzález A, F.[Guía de estudio para ser usada como complemento de la unidad audiotutorial sobre el mismo tema][Técnicas de muestreo]Técnicas de muestreo

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