Resultados de búsqueda - Mathematical statistics.

Review of methods for modelling systems evolution por Nicholson, Charles F.

“…The objective of this review is to describe and evaluate conceptual, descriptive and mathematical modelling approaches for the evaluation of systems evolution, emphasizing the potential to include assessment of policy and technology impacts in systems with livestock. …”
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El Niño: Malawi’s harvest of its staple food maize may fall by 22.5% this year por De Weerdt, Joachim, Arndt, Channing, Thurlow, James, Duchoslav, Jan, Glauber, Joseph W., You, Liangzhi, Anderson, Weston

“…Econometric modelling, which uses statistics and mathematics, is useful in studying the cause and effect of relationships, in the case of weather patterns. …”
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Ekonomiska konsekvenser av etanolproduktion i östra Sverige por Flensén, Andreas

“…The analyses assume that all members act jointly with the objective of maximizing joint profits at the farm level as well as at the cooperative firm. A mathematical model is created to calculate the optimal use of arable land. …”
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Estimating income mobility in Colombia using maximum entropy econometrics por Morley, Samuel, Robinson, Sherman, Harris, Rebecca Lee

“…Under weak assumptions about the error generation process, we can derive test statistics based on the likelihood ratio measuring the significance of the estimation. …”
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Quantitatively evaluating the cross-sectoral and one health impact of interventions: A scoping review and case study of antimicrobial resistance por Naylor, N.R., Lines, J., Waage, Jeff, Wieland, Barbara, Knight, G.M.

“…Results: The review included 90 studies: 73 individual evaluations (from 72 papers) and 18 reviews, with a range of statistical modelling (n = 13 studies), mathematical modelling (n = 53) and index-creation/preference-ranking (n = 14) methods discussed. …”
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Alumner från SLU, Skogsmästarskolan säger sitt por Vidmark, Jens

“…Surveys were sent to batches 05/08, 06/09 and 07/10 a total of 136 question-naires were sent out. 80 people answered the survey, this gives a response rate of 59 percent The former students rated according to a 9-grade scale how satisfied they were with the different courses they had attended during their years as students at the school. The courses in mathematics and statistics got the highest marks with an average of 7.3, while the entry-level course in law only got an average of 4.6. …”

Impacts of urbanization on land use change and its incidences on the climate: case of Bingerville City (Ivory Coast, West Africa) por Traore, K. S., Obahoundje, Salomon, Hauhouot, A. C., Diedhiou, A.

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Multi-spectral kernel sorting to reduce aflatoxins and fumonisins in Kenyan maize por Stasiewicz, Matthew, Falade, Titilayo D.O., Mutuma, M., Mutiga, Samuel K., Harvey, Jagger J.W., Fox, Glen P., Pearson, T.C., Muthomi, J.W., Nelson, Rebecca

“…The machine was calibrated by building a mathematical model relating reflectance at nine distinct wavelengths (470–1550 nm) to mycotoxin levels of single kernels collected from small-scale maize traders in open-air markets and from inoculated maize field trials in Eastern Kenya. …”
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Aprovechamiento de pasturas en primavera por Scheneiter, Jorge Omar, Velazco, Julio Gabriel, Acuña, Mariela Luciana, Lavandera, Javier Eduardo, Pacente, Ezequiel Martin, Mattera, Juan

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Spatial Comparison and Quality Check of Farmer-recorded Daily Rainfall Data; A Case of Nyakach and Soin-sigowett, Kenya por Mwakudisa, Mawora Thomas, Otumba, Edgar Ouko, Otieno, Joyce Akinyi

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Evaluation of different chemical preservatives to control Zygosaccharomyces rouxii growth in high sugar culture media por Rojo, María Cecilia, Arroyo Lopez, Francisco Noe, Lerena, María Cecilia, Mercado, Laura Analia, Torres, Adriana Mabel, Combina, Mariana

“…Zygosaccharomyces rouxii is an osmophilic yeast responsible for a large amount of economic loss in high sugar food production. Statistical modelling techniques were used in the present study to assess the individual effects of different chemical preservatives (potassium sorbate, sodium benzoate, dimethyldicarbonate, vanillin, ferulic, p-coumaric and caffeic acids) to control the growth of a cocktail of five yeast strains belonging to this species and isolated from spoilt concentrated grape juices. …”
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Structural equation modelling for digital soil mapping por Angelini, Marcos Esteban

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Análisis de rachas de lluvia para el manejo de cultivos de caña, Saccharum officinarum, en el valle del río Cauca, Colombia por Chica Ramirez, Hector Alberto, Bravon Bastidas, Juan Jose, Peña Quiñones, Andrés Javier

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Estimating soil organic carbon through loss on ignition: effects of ignition conditions and structural water loss por Hoogsteen, Martine J.J., Lantinga, Egbert A., Bakker, Evert Jan, Groot, Jeroen C.J., Tittonell, Pablo Adrian

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Probabilistic assessment of investment options in honey value chains in Lamu county, Kenya por Wafula, Joshua, Karimjee, Yusuf, Tamba, Yvonne, Malava, Geoffrey, Muchiri, Caroline, Koech, Grace, Leeuw, Jan de, Nyongesa, Josephat, Shepherd, Keith D., Luedeling, Eike

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Relación del índice de sitio con los factores que influyen en el crecimiento de Tectona grandis L.F. y Bombacopsis quinata (Jacq.) Dugand, en Costa Rica. Una herramienta práctica p... por Montero M., Marcelino, Ugalde, Luis, Kanninen, Markku

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Revisiting pest sampling plans in light of economic uncertainty and risk aversion por Rincon, Diego F., Rivera Trujillo, Hugo Fernando, Mojica Ramos, Lorena, Borrero Echeverry, Felipe

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The pest kill rate of thirteen natural enemies as aggregate evaluation criterion of their biological control potential of Tuta absoluta por van Lenteren, Joop C., Lanzoni, Alberto, Hemerik, Lia, Bueno, Vanda H.P., Bajonero Cuervo, Johanna G., Biondi, Antonio, Burgio, Giovanni, Calvo, Francisco J., de Jong, Peter W., Lopez, Silvia Noemi, Luna, María Gabriela, Montes, Flavio C., Nieves, Eliana L., Aigbedion‑Atalor, Pascal Osa, Riquelme Virgala, Maria B., Sánchez, Norma E., Urbaneja, Alberto

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Diversidad de la entomofauna asociada a diferentes cultivos en parcelas colindantes en el departamento del Cesar, Colombia por Sierra Baquero, Paola Vanessa, Sanchez Doria, Tatiana, Rubiano Rodriguez, Jose Antonio

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Putting plant resistance traits on the map: a test of the idea that plants are better defended at lower latitudes por Moles, Angela T., Wallis, Ian R., Foley, William J., Warton, David I., Stegen, James C., Bisigato, Alejandro J., Cella-Pizarro, Lucrecia, Clark, Connie J., Cohen, Philippe S., Cornwell, William K., Peri, Pablo Luis, Prior, Lynda D.

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