8 research outputs found
Evidence of predation on aquatic vertebrates by serval in the Okavango Delta, Botswana
The serval (Leptailurus serval, Schreber 1776) occurs widely in sub‐Saharan Africa, though is absent from Congo Basin equatorial forest and from highly arid regions of North and South West of the continent. Preferred habitats include grassland and savannah woodland mosaics, frequently associated with rivers, wetlands and flood‐plains. The serval is a specialist rodentivore with rodents, particularly Murids, usually making up between 80% and 90% of their diet across much the species range. They also feed on shrews (Crocidura and Myosorex spp), small birds, amphibians, insects and small reptiles. There are occasional records of servals hunting young of small antelope, ground (Xerus spp) and tree squirrels (Paraxerus spp), larger ground and wading birds (e.g. flamingo, Phoeniconaias spp), hares (Lepus spp), springhares (Pedetes capensis), cane rats (Thryonomys spp), aquatic vertebrates and invertebrates and small carnivores. Grass culms, leaves and fruit are sometimes consumed. Here we present evidence of predation on larger aquatic vertebrates by serval in the Okavango Delta, Botswana.Robertson Foundationhttps://wileyonlinelibrary.com/journal/aje2021-12-31hj2021Mammal Research InstituteZoology and Entomolog
Factores que determinan la acción de chatear por celular mientras se camina
1 recurso en línea (97 páginas) : ilustraciones, figuras, tablas.El presente trabajo de investigación estudia los factores que determinan la acción
de chatear mientras se camina, con el propósito de analizar sus causas, desde la
perspectiva de los usuarios, y plantear medidas que ayuden a mitigar la conducta
de chatear mientras se camina de los peatones.
La metodología usada tuvo dos perspectivas basadas en la aplicación de una
encuesta a una muestra representativa de la población. En primer lugar, se hizo un
análisis empírico a partir de la obtención de barras apiladas divergentes, para un
conjunto de indicadores de variables latentes, basados en indicadores de tipo Likert.
En segundo lugar, tomando los datos de un experimento de preferencias
declaradas, mediante un proceso iterativo, se hizo la estimación de modelos de tipo
Logit multinomial a través del software de uso libre Biogeme.
De esta manera se pudo concluir que los factores determinantes de la conducta de
chatear mientras se caminan están relacionados con características sociales del
individuo, políticas de tránsito, características de la infraestructura urbana,
características socio-económicas de las personas, así como las características
propias del uso del teléfono de cada individuo.Bibliografía y webgrafía: páginas 94-97.PregradoIngeniero de Transport
Schematic and dimensional representation of obstacle course obstacles.
<p>(<b>A</b>) Step Over Curb (Length = 0.105 m; width = 0.720 m; height 0.105 m), (<b>B</b>) Crossing Platform (Length = 2.030 m; width = 0.750 m; height = 0.092 m), (<b>C</b>) Step Obstacle: (Step 1; Length = 0.400 m; width = 0.400 m; height = 0.205 m, (<b>D</b>) Step 2; Length = 0.500 m; width = 0.500 m; height = 0.300 m), (<b>E</b>) Step 3; (Length = 0.585 m; width = 0.910 m; height = 0.110 m), (<b>F</b>) Model people (Length = 0.420 m; width = 0.530 m; height = 1.880 m).</p
Course performance characteristics of participants negotiating obstacle course.
<p>a = Significant vs. Text = 0.015.</p><p>b = Significant vs. Text = 0.035.</p><p>Course performance characteristics of participants negotiating obstacle course.</p
Performance characteristics for individual obstacles.
<p>Performance characteristics for individual obstacles.</p
Data represent mean and 95% confidence interval information for Course Time (Panel A), Step Length (Panel B), Double Support phase of walking (Panel C) and Obstacle Clearance Height for course barriers (Panel D).
<p>Statistical notations are: * 0.001 and ¶ 0.02.</p
Course performance characteristics of participants negotiating obstacle course.
<p>a = Significant vs. Text = 0.015.</p><p>b = Significant vs. Text = 0.035.</p><p>Course performance characteristics of participants negotiating obstacle course.</p