Optimal random sampling designs in random field sampling

A Horvitz-Thompson predictor is proposed for spatial sampling when the characteristic of interest is modeled as a random field. Optimal sampling designs are deduced under this context. Fixed and variable sample size are considered

OPTIMAL RANDOM SAMPLING DESIGNS IN RANDOM FIELD SAMPLING

A Horvitz-Thompson predictor is proposed for spatial sampling when the characteristic of interest is modeled as a random field. Optimal sampling designs are deduced under this context. Fixed and variable sample size are considered.

Diagnóstico da ocorrência de pragas de solo em Mato Grosso do Sul.

bitstream/item/65250/1/30136.pdfOrganizado por: Crébio José Ávila, Rômulo Penna Scorza Júnior

Directive Microstrip Antennas for Specific Below −2.45 GHz Applications

Microstrip printed antennas are the preferred choice in high data ratio modern communications, mainly at 2.45 GHz and above. In this paper, we propose two different approaches of microstrip printed antennas for lower frequency usage. In this sense, we present a printed microstrip Yagi-like antenna at 868 MHz and a printed dipole log-periodic antenna for wider band applications. We focus on the use of low-cost substrates, with a good performance at these frequencies, and giving antennas with useful sizes for such applications. For the analysis, we make use of standard experimental characterization combined with full-wave 3D-FDTD specifically developed simulations. In this way, the S11, radiation patterns, and gain/efficiency figures are given

Bases de trabajo aprobadas para Ávila y su provincia por Orden comunicada del Ministerio de Trabajo de 29 de Julio de 1933

Copia digital. Valladolid : Junta de Castilla y León. Consejería de Cultura y Turismo, 201

Uso de RDF y bases de datos de metadatos nativas dentro del proyecto Omnipaper

Este artículo describe el trabajo realizado para la creación de un prototipo para la búsqueda de información en archivos digitales distribuidos utilizando la tecnología RDF y una base de datos nativa. El articulo reseña los prerrequisitos para la descripción y normalización de la información de los archivos distribuidos, luego los criterios para la selección de la base de datos nativa, muestra las funcionalidades del prototipo creado y al final tiene una síntesis de las lecciones aprendidas y el trabajo futuro.Comissão Europeia - IST (OmniPaper - Smart Access to European Newspapers

Total factor productividty growth in agriculture: the role of technological capital.

In this chapter we compute measures of total factor productivity (TFP) growth for developing countries and then contrast TFP growth with technological capital indexes. In developing these indexes, we incorporate schooling capital to yield two new indexes: Invention-Innovation Capital and Technology Mastery. We find that TFP performance is strongly related to technological capital and that technological capital is required for TFP and cost reduction growth. Investments in technological capital require long-term (20- to 40-year) investments, which are typically made by governments and aid agencies and are the only viable escape route from mass poverty