Search Results - "The Simpsons"

Estimating sample size for inference about the Shannon-Weaver and the Simpson Indices of species diversity by Magnussen, S., Boyle, T.J.B.

“…For the same statistical resolution the Simpson index requires about nine times as many samples as the Shannon-Weaver index. …”
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Efecto biocida de cuatro extractos de Paullina clavigera Schdl. VAR. Bullata D.R. Simpson sobre los Artrópodos en Pucallpa. by Pinedo Arévalo, Henry Pacífico

“…El trabajo de investigación se realizó en el Laboratorio de Entomología del Instituto de Investigaciones de la Amazonia Peruana (IIAP), sede Pucallpa, Región Ucayali, Perú; con el objetivo de proporcionar información básica sobre el efecto biocida y concentración letal media (CLso) de los extractos por decocción, hidroalcohólico, clorofórmico y hexánico de Paullinia clavigera var. 'sullata' D.R. Simpson (Sapindaceae) en larvas de Rhynchophorus palmarum Linneo (Curculionidae), Eupalamides cyparissius Fabricius (Castniidae) obtenidas a partir de adultos y en nauplios del bioindicador Artemia salina Kellog (Artemiidae). …”
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Desarrollo de una estrategia de producción y comercialización asociativa para lácteos mixtos ovino-bovinos del Valle Simpson, en la Patagonia Occidental chilena

“…Al momento de iniciarse este proyecto, INIA-Tamel Aike estaba desarrollando en el valle de Simpson (XI Región) iniciativas relacionadas con el desarrollo regional del rubro ovinos de leche, específicamente en la implementación y evaluación de nuevos sistemas productivos, en la introducción de germoplasma animal especializado y en la elaboración experimental de quesos.Como resultado de estas iniciativas, INIA-Tamel Aike contaba con una planta procesadora de lácteos que producía dos tipos de quesos: mixto ovino-bovino y puro de oveja. …”
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Evaluación de la calidad de agua del Río Yeguare mediante el uso de macro invertebrados como indicadores biológicos by Vega P., José S.

Subjects: “…Dominancia de Simpson…”
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Propagación vegetativa de Paullinia clavigera Schide var. Bullata D.R.Simpson, mediante tres tipos my dos tamaños de estacas en la calidad de pucallpa. by Mendoza Reap, Freddy

“…El presente trabajo de investigación se llevó a cabo en las instalaciones del Instituto de Investigaciones de la Amazonia Peruana filial Ucayali (IIAP-Ucayali), entre los meses de Mayo del 2004 a Enero del 2005, teniendo como objetivo determinar tipos y tamaños de estacas para la propagación a nivel de vivero de "sacha yoco" (Paullinia clavigera Schide Var. 'Bullata' D.R. Simpson), mediante tres porciones vegetativas de tallo y dos tamaños. …”
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Ficha Iniciativa FIA : Desarrollo de una estrategia de producción y comercialización asociativa para lácteos mixtos ovino-bovinos del Valle Simpson, en la Patagonia Occidental chilena

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Efecto del cadmio de la roca fosforica en la macro fauna del suelo en cultivos de cacao, provincia de Leoncio Prado, región Huánuco by Affa Montoya, Ricardo Fernando

Subjects: “…Indice diversidad de Simpson…”
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Agrobiodiversity conservation practices and gender consideration in Sinana District, southeastern Ethiopia by Asseffa, W.

“…Pearson correlation was used to test the relationship between gender, age, land size, land ownership and diversity. In addition Simpson’s index (D) = (1-∑ Pi2) also used to identify the diversity of plants and animals that are used by women and men. …”
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Does crop diversity contribute to dietary diversity? evidence from integration of vegetables into maize‑based farming systems by Rajendran, S., Afari-Sefa, Victor, Shee, Apurba, Bocher, T., Bekunda, Mateete A., Dominick, I., Lukumay, Philipo J.

“…Results Based on multiple regression analysis, the study found that simply increasing Simpson’s Index does not influence dietary diversity of farm households due to the presence of interaction effect between Simpson’s Index and crop income. …”
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Off-farm income and dietary diversity in subsistence farming in Burundi by Emera, Willy Désiré, Lachat, Carl, Umwungerimwiza, Yves Didier, Slosse, Wannes, D’Haese, Marijke

“…The factors associated with the dietary diversity of women and children in these rural households were analysed using Poisson and probit models with six indicators of agricultural production diversity: (1) tropical livestock units, (2) animal count, (3) crop species count, (4) the Simpson’s index, (5) the Shannon index and (6) caloric content. …”
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The hot and cold cow by Sone Dy, Sanae

“…The model consists of 3947 observations and includes the variables temperature, Simpson’s index of diversification and an interaction term between diversification index and temperature. …”
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Impact of current and historical climate shocks on crop diversification in Zambia: insights from household- and district-level observations by Wang, J., Konar, M., Anderson, P. N., Hadunka, P., Mulenga, B.

“…Specifically, we use the Pooled Fractional Probit (PFP) estimator to develop regression models for crop diversification, analyzing 6625 households for 3 years and 74 districts for 9 years, using Rural Agriculture Living Survey (RALS) and Crop Forecast Survey (CFS) datasets, respectively. Simpson’s Diversity Index (SDI) of crops serves as the dependent variable and is consistently higher at the district level than at the household level, suggesting that aggregation at larger scales may mask localized monoculture vulnerabilities. …”
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Dietary species richness as a measure of food biodiversity and nutritional quality of diets by Lachat, Carl, Raneri, Jessica Evelyn, Walker Smith, K., Kolsteren, P., Damm, P. van, Verzelen, K., Penafiel, Daniela, Vanhove, W., Kennedy, G., Hunter, D., Oduor Odhiambo, F., Ntandou-Bouzitou, Gervais D., Baets, B. de, Ratnasekera, D., The Ky, H., Remans, R., Termote, Céline

“…Nine species were consumed in all countries and provided, on average, 61% of total energy intake and a significant contribution of micronutrients in the wet season. Compared with Simpson’s index of diversity and functional diversity, species richness (SR) showed stronger associations and better diagnostic properties with micronutrient adequacy. …”
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Effects of Saccharomyces cerevisiae-lactic acid bacteria cocultured maize silage on dairy cows performance and in vitro rumen fermentation by Chen, Q., Liu, Z., Zhou, C., Zhong, Z., Wu, J., Jiang, A., Yang, H., Tan, Z., Lukuyu, Ben A., Kang, J.

“…Results: The results indicated that the lactic acid content in the treatment group was increased significantly on 30 and 60 days of fermentation (p < 0.05). In addition to Simpson’s index, alpha diversity was significantly affected by the fermentation day × treatment interaction (p < 0.05). …”
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Ekokardiografiska fynd hos dobermann med och utan dilaterad kardiomyopati by Carlsson, Melissa

“…Referensvärden finns föreslagna specifikt för dobermann där kammardiametern mäts i kortaxel i diastole och systole med M-mode, samt vänster kammares diastoliska och systoliska volym med Simpsons method of discs (SMOD). Syftet med den här studien var att undersöka överensstämmelsen mellan olika metoder vid volymberäkning av vänster kammare hos dobermann med och utan DCM. …”

Ekologiska restaureringsåtgärders påverkan på unga trädplantor by Brevik Svensson, Atle, Olofsson, Ludwig

“…In comparing of the tree species composition, Simpsons Diversity Index (SDI) and Effective Number of Species (ENS) was used to measure biodiversity. …”
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Nocturnal moths use of novel habitats by Lövbom, Oskar

“…Generalised linear models (GLM) were used to analyse abundance and species richness of nocturnal moths. Simpsons diversity index and Shannon-wiener index were used for analysing the alpha diversity and a non-metric multidimensional scaling (NMDS) were used to illustrate the assemblage structure in the habitats. …”
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Biodiversity in the market economy by Jagger, Pamela, Simpson, D.

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Some socio-economic factors affecting the conservation and utilisation of farm animal genetic resources in Malawi by Simpson, J.

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Farmer-to-farmer extension: Issues in planning and implementation by Simpson, Brent, Franzel, Steven, Degrande, Ann, Kundhlande, Godfrey, Tsafack, Sygnola

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