Search Results - Linear systems.

Evaluation of the Penman–Monteith reference evapotranspiration under limited data and its sensitivity to key climatic variables under humid and semiarid conditions by Koudahe, K., Djaman, K., Adewumi, J.K.

Get full text

Tree growth and forest regeneration under different logging treatments in permanent sample plots of a hill mixed dipterocarps forest, Malinau Research Forest, Malinau, East Kaliman... by Priyadi, H., Sheil, Douglas, Kartawinata, K., Sist, P., Gunarso, Petrus, Kanninen, M.

“…The mean growth rate is less than the growth rate of 1 cm year-1 assumed by the Indonesian Selective Cutting and Replanting System or TPTI. A longer cutting cycle is needed for sustainable forest management.…”
Get full text

Use of the APSIM model in long term simulation to support decision making regarding nitrogen management for pearl millet in the Sahel by Akponikpè, Pierre B.I., Gerard, Bruno G., Michels, K., Bielders, Charles L.

“…Because experiments with only a few fertility management options on a limited number of sites and years cannot fully capture the complex and highly non-linear soil–climate–crop interactions, crop growth simulation models may suitably complement experimental research to support decision making regarding soil fertility and water management. …”
Get full text

Interpretation of commercial production information: a case study of lulo (Solanum quitoense), an under-researched Andean fruit by Jiménez, D., Cock, James H., Jarvis, Andy, García, J., Satizábal, H.F., Damme, Patrick van, Pérez Uribe, A., Barreto Sáenz, MA

“…Our premise is that if it were possible to characterize the production system in terms of management and the environmental conditions, and if information on the harvested product were collected from a large number of harvesting events under varied conditions, it should be possible to develop data-driven models that describe the production system. …”
Get full text

Husbandry practices and phenotypic characteristics of indigenous goat populations in Ethiopia by Gatew, H., Hassen, H., Kebede, K., Haile, Aynalem, Lobo, R.N.B., Yetayew, A., Rischkowsky, Barbara A.

“…The present study was conducted with the objective to characterize the husbandry practices and phenotypic characteristics of mature Bati, Borana and Short-eared Somali goats kept under traditional management systems so that the information generated can be used in designing breeding programs. …”
Get full text

A hierarchical method for soil erosion assessment and spatial risk modelling: a case study of Kiambu district in Kenya. by Okoth, Peter F.

“…The field-plots were stored as area objects while the linear watershed proxies were stored as line objects. …”
Get full text

Effekt av biotintillförsel på klövhälsan hos mjölkkor i lösdrift : ett kontrollerat fältförsök på tre gårdar by Lomander, Hanna

“…The cows were all housed in cubicle systems with transponder concentrate feeding systems. …”

Segmentation of hyperspectral images for the detection of rotten mandarins by Gómez-Sanchís, Juan, Camps-Valls, G., Moltó, Enrique, Gomez-Chova, L., Aleixos, Nuria, Blasco, José

“…The image segmentation relies on the combination of band selection techniques and pixel classification methods such as classification and regression trees and linear discriminant analysis.…”
Get full text

Empirical models, rules, and optimization: turning positive economics on its head by Cattaneo, Andrea, Robinson, Sherman

“…An agent, instead of optimizing, follows Fuzzy Associative Memory (FAM) rules which, given input and output data, can be estimated and used to approximate any non-linear dynamic process. Empirical results indicate that the fuzzy rule-based system performs extremely well in approximating optimal dynamic behavior in situations with limited noise.…”
Get full text

Hur ett certifieringsorgan kan bidra till en hållbar värdekedja by Beck-Friis, Caroline, Holm, Malin

Get full text

Report on field survey of sheep in Ethiopia from August 8th till August 18th, 1970, in the provinces of Wollo, Tigre and Harar by Oppenheimer, B.

“…Finally methods of fattening system presented with schematic layout. Recommended caring and utilization of feed, materials needed, possibilities of improvement and cost of sheep fattening and dispatch system are indicated.…”
Get full text

Yield estimation based on agronomic traits in vegetables under different biochar levels by Ccopi Trucios, Dennis, Requena Rojas, Edilson Jimmy, Arias Arredondo, Alberto, Taipe Crispin, Maglorio, Marcelo Matero, Jhonny Demis, Pizarro Carcausto, Samuel Edwin

“…Simultaneously, UAV-captured multispectral imagery provided spectral indices that were integrated with agronomic data into machine learning models: linear regression, support vector machines (SVM), and regression trees (CART). …”
Get full text
Get full text

Effect of defoliation frequency on Rytidosperma virescens plants and arbuscular mycorrhizal fungi colonization by Toledo, Santiago, Fontenla, Sonia Beatriz, Peri, Pablo Luis

“…We determined that the appropriate recovery period for rotational grazing systems should be at least 50 d (threshold) to optimize forage production and AM symbiosis during spring-summer seasons. …”
Get full text
Get full text
Get full text

Positive relationship between crop centrality and pollination service by Allasino, Mariana Laura, Haedo, Joana P., Lázaro, Amparo, Torretta, Juan Pablo, Marrero, Hugo Javier

“…For each network, we calculated weighted closeness centrality of crops and related it to crop seed set by using generalized linear mixed models. Our results show that crop centrality is positively associated with crop seed production, and suggest that the use of ecological interaction network metrics in agricultural systems could be useful to design agronomic management plans and enhance crop yields.…”
Get full text
Get full text
Get full text

Modelación del uso de la tierra para orientar el desarrollo territorial en la subcuenca del río Copán, Honduras by Guillén, Rovell, Faustino, Jorge, Velásquez, Sergio, Solís, Hernán

Get full text

Chapter 8. Assessing the application and practice of conservation agriculture in Malawi by Bunderson, W. Trent, Thierfelder, Christian L., Jere, Zwide D., Museka, R.G.K.

“…The Conservation Agriculture (CA) system promoted by Total LandCare (TLC) and the International Maize and Wheat Improvement Center (CIMMYT) is based on 14 years of experience grounded on the principles of minimum soil disturbance, good soil cover and crop associations. …”
Get full text

From land cover change to land function dynamics: a major challenge to improve land characterization by Verburg, P.H., Steeg, Jeannette van de, Veldkamp, A., Willemen, L.

“…Explicit attention to the non-linear relations between land cover, land use and land function is essential to consistently address land change. …”
Get full text

Water Deficits and Mineral Uptake in Rice by O'Toole, J.C., Baldia, E.P.

“…However, interpretation of results, even in this simple system, is complex. The linear and curvilinear relationships among elements of the soil‐plant‐atmosphere continuum are discussed as aides in interpretation of results.…”
Get full text

Evolution of rice consumption and demand patterns by Gyimah-Brempong, Kwabena, Kuku-Shittu, Oluyemisi

“…Following this, the chapter empirically estimates the behavioral patterns of demand for rice in Nigeria by rural and urban populations and income status. The analysis uses a linear expenditure system demand model and the most recent data from the 2011 Living Standards Measurement Study-Integrated Surveys on Agriculture (LSMS-ISA) (Nigeria, NBS and World Bank 2011), which is the nationally representative household data collected by the World Bank and the NBS. …”
Get full text

Integrating socio-economic and biophysical assessments using a land use allocation model by Du, Y., Huffman, T., Toure, S., Feng, F., Gameda, Samuel, Green, M., Liu, T., Shi, X.

“…The potential for further development of LUAM using the Land Suitability Rating System (LSRS) is discussed.…”
Get full text