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| Registros recuperados: 202 | |
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| Faria,Luís F. F.; Silva,João E. A. R.. |
| ABSTRACT The aim of this study was to evaluate the effects of modifying the maintenance programming of equipment used in sugarcane mechanical harvesting, by transferring actions that can be planned to periods when machines are inactive due to meal breaks and other working shift transitions stoppages. A simulation model was developed to represent the maintenance procedures of combines, haulouts, and other vehicles used by a harvest team. Scenarios were tested using alternatives for interventions such as refueling, lubrication and harvester blade replacement, enabling strategies to be focused towards better utilization of cutting, loading, and transport (CLT) system equipment. As a result, it was possible to remove one combine and two haulouts, while... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural machinery; Breakdowns; Simulation. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162015000601187 |
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| Mata Espinosa, Héctor Armando. |
| El objetivo de ésta investigación fue realizar una simulación de la producción de agua en la cuenca del río Amajac, Hidalgo, México, mediante la aplicación del modelo hidrológico SWAT (Soil and Water Assessment Tool). Previamente se realizó una calibración del modelo, ajustando sus parámetros más sensibles, tales como: curva numérica (CN2), capacidad de agua disponible en el suelo, factor de compensación de la evaporación en el suelo, y coeficiente de agua subterránea. En la etapa de simulación se empleó el Sistema de Información Geográfica Arc View 3.2 y para alimentar el modelo, se utilizó la información climatológica proporcionada por el Servicio Meteorológico Nacional (SMN) para un periodo de cinco años (1996-2000), la información hidrométrica fue... |
| Tipo: Tesis |
Palavras-chave: Simulación; Producción de agua; Modelo hidrológico; SWAT; Maestría; Hidrociencias; Simulation; Water yield; Hydrologic model; SWAT. |
| Ano: 2008 |
URL: http://hdl.handle.net/10521/1600 |
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| Briggeman, Brian C.; Detre, Joshua D.; Doye, Damona G.; Lansford, Notie H., Jr.. |
| The Oklahoma Agricultural Bank Simulation Game (Ag Bank Sim) is a software based, experiential learning tool through which participants historically have learned key financial, economic, and banking lessons. The game offers a “real world” experience in which management decisions affect institutions interacting in a geographic market, enhancing understanding of the complex, competitive environment within which commercial banks operate. A new Internet version of the game has been developed, allowing participants to play Ag Bank Sim in a virtual environment. This poster highlights features of the game and reports results of pre and post tests of undergraduate students playing the game at Louisiana State University and Oklahoma State University in the spring... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Banking; Simulation; Experiential learning; Agricultural Finance; Financial Economics; Teaching/Communication/Extension/Profession. |
| Ano: 2010 |
URL: http://purl.umn.edu/61409 |
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| Stokes, Jeffrey R.. |
| Data on the number of Pennsylvania dairy farms by size category are analyzed in a Markov chain setting to determine factors affecting entry, exit, expansion, and contraction within the sector. Milk prices, milk price volatility, land prices, policy, and cow productivity all impact structural change in Pennsylvania's dairy sector. Stochastic simulation analysis suggests that the number of dairy farms in Pennsylvania will likely fall by only 2.0 percent to 2.5 percent annually over the next 20 years, indicating that dairy farming in Pennsylvania is likely to be a significant enterprise for the state in the foreseeable future. |
| Tipo: Journal Article |
Palavras-chave: Dairy; Maximum entropy; Farm size; Markov chain; Simulation; Farm Management; Industrial Organization. |
| Ano: 2006 |
URL: http://purl.umn.edu/10218 |
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| Ferreira,Adésio; Silva,Marcia Flores da; Silva,Luciano da Costa e; Cruz,Cosme Damião. |
| Based on simulation studies, it was shown that the type and size of experimental populations can exert an influence on the accuracy of genetic maps. A hypothetical genome map (one chromosome with nine equidistant molecular markers) was generated for the following population types: F2 with dominant and co-dominant markers, backcrossing, recombinant inbred lines (RIL) and double-haploid. The population sizes were 50, 100, 150, 200, 500 and 1000 individuals and 100 simulations were made for each population. The inaccuracies of the populations with the lowest number of individuals were shown by inversions in the order of the markers and the establishment of more than one linkage group in up to 38% of the simulations, depending on the population type. Stress... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Experimental populations; Mapping; Simulation; Markers. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000100033 |
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| MANZATO,A. J.; TADEI,W. J.; CORDEIRO,J. A.. |
| Based on experimental population profiles of strains of the fly Megaselia scalaris (Phoridae), the minimal number of sample profiles was determined that should be repeated by bootstrap simulation process in order to obtain a confident estimation of the mean population profile and present estimations of the standard error as a precise measure of the simulations made. The original data are from experimental populations founded with SR and R4 strains, with three replicates, which were kept for 33 weeks by serial transfer technique in a constant temperature room (25 ± 1.0°C). The variable used was population size and the model adopted for each profile was a stationary stochastic process. By these simulations, the three experimental population profiles were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bootstrap; Megaselia; Populations; Simulation; Population size. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082000000300006 |
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| Bernabeu, Rodolfo; Olmeda, Miguel; Diaz, Monica. |
| El trabajo ha cubierto un doble objetivo, por un lado se ha determinado la importancia relativa de los atributos del vino que influyen en la conformación de las preferencias de los consumidores de Castilla-La Mancha, y por otro se ha analizado la actitud de los consumidores hacia los vinos con certificación de Denominación de Origen (D.O.) más importantes de Castilla-La Mancha (D.O. La Mancha y D.O. Valdepeñas), con respecto al más conocido en el ámbito nacional (D.O. Rioja). Como resultado del primer objetivo, los atributos más relevantes son el precio, el color (tinto, blanco), la certificación y el origen, por este orden, y del segundo objetivo, se obtiene que la D.O. La Mancha y la D.O. Valdepeñas son percibidas como de vinos más baratos, de consumo... |
| Tipo: Journal Article |
Palavras-chave: Designation of origin; Consumer behaviour; Conjoint Analysis; Simulation; Positioning brands; Consumer/Household Economics; M31; Q13. |
| Ano: 2005 |
URL: http://purl.umn.edu/28772 |
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| Rico, M.R.; Hernández, D.R.; Carozza, C.R.. |
| Assessment of abundance indexes for whitemouth croaker (Micropogonias furnieri) and brazilian flathead (Percophis brasiliensis) obtained with general linear models: Monte Carlo simulation and analysis of the interactions with the “year” factor. The effect of interactions with the year factor on the annual index of relative abundance obtained with general linear models applied to the cath per unit of effort data of whitemouth croaker and brazilian flathead commercial fleet was evaluated applying the Monte Carlo simulation. Levels on the relative percentage of variance explained by the interactions with the year factor (%RVEAÑO) were determined, above which loss of proportionality between the relative abundance series given by the index and the real series... |
| Tipo: Journal Contribution |
Palavras-chave: Stock assessment; Abundance; Catch/effort; Simulation; Commercial species; Coastal fisheries. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/5503 |
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| Registros recuperados: 202 | |
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