Resultados de búsqueda - Linear systems.

Characterization of Bonga and Horro indigenous sheep breeds of smallholders for designing community based breeding strategies in Ethiopia por Edea, Zewdu

“…Sheep have multi-purpose roles in both production systems. Among the reasons for keeping sheep, source of income was ranked highest. …”
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Impact of crop producer price changes on quantities of woodland products collected by communal households in Chivi, Zimbabwe por Mutamba, M.

“…The Zimbabwe woodlands are an important part of the rural households' livelihood system as they meet requirements for food, energy, construction materials and cash. …”
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Management of major viral and fungal diseases affecting temperate food legume crops in the Arab and Mediterranean countries por Kumari, Safaa, Kemal, Seid Ahmed

“…The importance of food legume viruses is mainly associated with increased in aphid activities due to changes in climate and cropping system in the regions. A positive linear correlation has been observed between virus prevalence and aphids that can transmit these viruses. …”
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Agricultural Innovation in the Volta River Basin: An Analysis of Changes in Knowledge, Skills and Livelihoods brought about by the Volta Basin Development Challenge por Lasiter, Kalie, Tarrant, Anna

“…Innovation is traditionally defined as a linear and relatively homogenous process involving the invention of a “new” technology that is then transferred and adopted by an intended user. …”
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Covid-19 and lockdown policies: A structural simulation model of a bottom-up recession in four countries por Robinson, Sherman, Levy, Stephanie, Hernández, Victor, Davies, Rob, Gabriel, Sherwin, Arndt, Channing, van Seventer, Dirk Ernst, Pleitez, Marcelo

“…In this environment, we use a linear SAM-multiplier model that specifies a fixed-coefficient production technology, linear demand system, fixed savings rates, and fixed prices. …”
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Increasing sensitivity of methane emission measurements in rice through deployment of ‘closed chambers’ at nighttime por Wassmann, Reiner, Alberto, Ma.Carmelita, Tirol-Padre, Agnes, Hoang, Nghia Trong, Romasanta, Ryan, Centeno, Caesar Arloo, Sander, Bjoern Ole

“…This study comprises field experiments on methane emissions from rice fields conducted with an Eddy-Covariance (EC) system as well as test runs for a modified closed chamber approach based on measurements at nighttime. …”
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Geographic distribution of Colombian spittlebugs (Hemiptera: Cercopidae) via ecological niche modeling: a prediction for the main tropical forages’ pest in the Neotropics por Hernández, Luis Miguel, Espitia, Paula A., Florián, David, Castiblanco, Valheria, Cardoso Arango, Juan Andrés, Gómez-Jiménez, María I.

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Estimation of genetic gain for resistance to spittlebugs (Hemiptera: Cercopidae) in the Interspecific Urochloa CIAT Breeding Program using historical data por Hernández, Luis Miguel, Sandoval, Karol, Aparicio, Johan Steven, Ariza, Daniel, Espitia, Paula A., Castiblanco, Valheria, Jauregui, Rosa

“…The assembly of historical data from founders of the breeding programme and seven generations of the synthetic population of female parents in a linear mixed model, allowed the quantification of the rate of genetic gain for the improvement in resistance to spittlebugs. …”
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Circular bioeconomy for sustainable resource management and livelihood improvement in Ethiopia por Bodach, Susanne, Alegbeleye, Oluwadara, Taron, Avinandan, Hagos, Fitsum

“…Ethiopia faces a growing challenge of balancing natural resource utilisation with long-term sustainability. Its linear economic model leads to unsustainable waste generation from agriculture, urban populations, and the industry sectors. …”
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Effect of abiotic stresses on the nondestructive estimation of rice leaf nitrogen concentration por Haefele, Stephan M., Siopongco, Joel D. L. C., Amarante, Serafin T., Tuong, To Phuc

“…Decision support tools for non-destructive estimation of rice crop nitrogen (N) status (e.g., chlorophyll meter [SPAD] or leaf color chart [LCC]) are an established technology for improved N management in irrigated systems, but their value in rainfed environments with frequent abiotic stresses remains untested. …”
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A critical synthesis of remote sensing and machine learning approaches for climate hazard impact on crop yield por Obahoundje, Salomon, Tilahun, Seifu A., Zemadim, Birhanu, Schmitter, Petra

“…For drought impacts on crop productivity, RF dominated (39%) followed by Least Absolute Shrinkage and Selection Operator (LASSO, 11%), while for climate variability impacts, RF (21%) led alongside SVM (10%), ANN (9%), Long Short-Term Memory (LSTM) (8%), Multiple Linear Regression (MLR) (8%), and Convolutional Neural Network (CNN) (7%). …”
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Utilizing X-ray radiography for non-destructive assessment of paddy rice grain quality traits por Tharanya, M., Chakraborty, D., Pandravada, A., Babu, R., Gangashetti, M., Paidi, S., Choudhary, S., Sivasakthi, K., Anbazhagan, Krithika, Vaditandra, B., Waininger, M., Weule, M., Hufnagel, E., Claußen, J., Vaněk, J., Wittenberg, T., Kholova, J., Gerth, S.

“…Background: Agricultural systems are under extreme pressure to meet the global food demand, hence necessitating faster crop improvement. …”
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Pangani river basin over time and space: on the interface of local and basin level responses por Komakech, H.C., van Koppen, Barbara, Mahoo, H.F., Zaag, P. van der

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Assessing weather-yield relationships in rice at local scale using data mining approaches por Delerce, Sylvain Jean, Dorado, Hugo Andres, Grillon, Alexandre, Rebolledo, María Camila, Prager, Steven D., Patiño, Victor Hugo, Garcés Varón, Gabriel, Jiménez, Daniel

“…The analysis showed clear relationships in the various location-cultivar combinations, with climatic factors explaining 6 to 46% of spatiotemporal variability in yield, and with crop responses to weather being non-linear and cultivar-specific. Climatic factors affected cultivars differently during each stage of development. …”
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Genetic tests for estimating dairy breed proportion and parentage assignment in East African crossbred cattle por Strucken, E.M., Al-Mamun, H.A., Esquivelzeta-Rabell, C., Gondro, C., Okeyo Mwai, Ally, Gibson, John P.

“…Pedigree recording is rare in such systems which means that it is impossible to make informed breeding decisions. …”
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A reliable and non-destructive method for estimating forage shrub cover and biomass in arid environments using digital vegetation charting technique por Louhaichi, Mounir, Hassan, Sawsan, Clifton, Kathryn, Johnson, Douglas E.

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The demand on unregistered alcohol in Sweden 2001–2016 por Berglöf, Gustav, Kellidis, Anastasios

“…The method used was a multiple linear OLS regression with fixed annual and regional effects. …”
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Rotación óptima de cultivos y de uso de recursos en el sistema agroforestal de yerba mate (Ilex paraguariensis) por Krishnamurthy, L., Montoya Vilcahuamán, Luciano Javier, Musálem, Miguel Angel, Serrano Gálvez, Enrique, Velázquez Martínez, Alejandro

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Moose movement speed and home range during the rutting season por Hjort, Irene

“…Here I used a generalized additive mixed model to account for non-linear movement. I analysed data of 622 individuals (females=464, males=184). …”
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Farm typology incorporating actual land use: a low-data input approach for the Guanacaste province, Costa Rica por Wijffels, M.

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