نتایج جستجو برای: bushes

تعداد نتایج: 560  

2013
Helen Kuokuo Kimbi Yannick Nana Irene Ngole Sumbele Emmaculate Lum Calvin Tonga Malaika Nweboh Leopold G Lehman

Malaria transmission is perennial in Southwest Cameroon with seasonal increases during the rainy season, and varies with levels of urbanization [1]. The disease is also a major contributor to anaemia and may have profound consequences on learning and educational achievement of school age children [2]. Some studies have suggested that poor environmental sanitation and housing conditions. as well...

2002
N. S. Tlale G. Bright J. Potgieter

The New Zealand Film industry requires skilled operators to control the orientation of camera platforms. This is one of the crucial factors in producing movies with precision cinematography. Film footage of moving landscapes makes it difficult for the camera operator to efficiently operate the camera platform e.g. an inclined mountain terrain with surrounding trees and bushes. Such scenes requi...

2002
Martial Hebert Nicolas Vandapel Stefan Keller

Autonomous navigation in natural environments remains a considerable challenge, primarily because of the difficulty in describing the environment of the robot in a way that captures the variability of natural environments Error! Reference source not found.. While it is possible – although by no means trivial – to build models of smooth, 3-D terrain, it is much more difficult to deal with areas ...

Journal: :The Onderstepoort journal of veterinary research 1981
J Colborne R A Norval A M Spickett

Ixodes (Afrixodes) matopi occurs in association with the klipspringer (Oreotragus oreotragus) in rocky areas in Zimbabwe. The adult ticks are specific parasites of this antelope and the immature stages feed on klipspringers, hydraxes (Procavia capensis and Heterohyrax brucei) and red rock hares (Pronolagus crassicaudatus). Adults are active only in the wet season and prior to feeding are found ...

Journal: :The American naturalist 2013
Tom Wenseleers Jonathan P Bacon Denise A Alves Margaret J Couvillon Martin Kärcher Fabio S Nascimento Paulo Nogueira-Neto Marcia Ribeiro Elva J H Robinson Adam Tofilski Francis L W Ratnieks

Spiders of the tropical American colonial orb weaver Parawixia bistriata form a communal bivouac in daytime. At sunset, they leave the bivouac and construct individual, defended webs within a large, communally built scaffolding of permanent, thick silk lines between trees and bushes. Once spiders started building a web, they repelled other spiders walking on nearby scaffolding with a "bounce" b...

2003
Andres Castano Larry H. Matthies

An outdoor environment presents t o a robot objects that are drivable, like tall grass and small bushes, or non-drivable, like trees and rocks. Baditionally, because of the dificulty of discriminating between these classes, a robot searches for paths free of objects of either class. Although this approach prevents collisions with objects missclassified as drivable, it also eliminates a large nu...

1988
Christopher G. Harris Mike Stephens

The problem we are addressing in Alvey Project MMI149 is that of using computer vision to understand the unconstrained 3D world, in which the viewed scenes will in general contain too wide a diversity of objects for topdown recognition techniques to work. For example, we desire to obtain an understanding of natural scenes, containing roads, buildings, trees, bushes, etc., as typified by the two...

Journal: :Journal of economic entomology 2015
Noel G Hahn Rufus Isaacs

Infestation by blueberry gall midge, Dasineura oxycoccana Johnson, is common in northern highbush blueberries, but its effects on crop productivity are unknown. We examined whether infestation by blueberry gall midge reduces flower bud production when compared with uninfested shoots, and how infestation at different times affects the crop response. From the fall of 2009 to the spring of 2011, t...

2010
M. Bright C. Plum L.A. Riavitz N. Nikolov P. Martinez Arbizu E.E. Cordes S. Gollner

The abundance and higher taxonomic composition of epizooic metazoan meiobenthic communities associated with mussel and tubeworm aggregations of hydrocarbon seeps at Green Canyon, Atwater Valley, and Alaminos Canyon in depths between 1400 and 2800 m were studied and compared to the infaunal community of non-seep sediments nearby. Epizooic meiofaunal abundances of associated meiobenthos living in...

2006
Stefan Roettger

The area of terrain rendering has seen great improvements both in rendering performance and image quality. The latest terrain rendering algorithms efficiently utilize the capabilities of actual programmable graphics hardware in order to achieve real-time visualizations of large terrain models. Despite these advances, a remotely sensed dataset will not look realistic unless the terrain model als...

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