Results 31 to 40 of about 5,302,764 (297)

Disruptive coloration and background pattern matching

Nature, 2005
Effective camouflage renders a target indistinguishable from irrelevant background objects. Two interrelated but logically distinct mechanisms for this are background pattern matching (crypsis) and disruptive coloration: in the former, the animal's colours are a random sample of the background; in the latter, bold contrasting colours on the animal's ...
Cuthill, IC, Stevens, M, Sheppard, J, Maddocks, T, Párraga, CA, Troscianko, TS   +5 more
openaire   +4 more sources

Transparency in the Ophthalmology Residency Match: Background, Study, and Implications [PDF]

Cureus, 2021
Background Medical students are applying to dramatically more ophthalmology residency programs than in the past, causing an increased administrative burden for programs and financial harm to students. This study considers the background of this situation and looks at how a lack of transparency surrounding potential residency match filters contributes ...
Markle, Jonathan C, Ahmed, Harris, Pandya, Kishan, Parikh, Ankur, Bolok, Youstina, Fehlman, Jared, Aitharaju, Varun, Bastian, Riley, Dey, Shreya, Chalasani, Meghana, Chanamolu, Meghana, Pedersen, Karina, Ganios, Natalie, Pham, Vincent, Mansur, Shabnam, Law, Janice C   +15 more
openaire   +2 more sources

Does the use of nest materials in a ground-nesting bird result from a compromise between the risk of egg overheating and camouflage?

Biology Open, 2019
Many studies addressing the use of nest materials by animals have focused on only one factor to explain its function. However, the consideration of more than one factor could explain the apparently maladaptive choice of nest materials that make nests ...
Jesús Gómez, Gustavo Liñán-Cembrano, Cristina Ramo, Macarena Castro, Alejandro Pérez-Hurtado, Juan A. Amat   +5 more
doaj   +1 more source

Post-Fire Predation Risk in the Black Cicada Tibicina quadrisignata

Fire
The background modification of ecosystems affected by fire can cause black or dark colours in animals to become adaptive, providing better protection against visually oriented predators.
Pere Pons, Roger Puig-Gironès, Josep M. Bas, Carles Tobella   +3 more
doaj   +1 more source

3D Reconstruction Cost Function Algorithm Based on Stereo Matching in the Background of Digital Museums

IEEE Access, 2023
Stereo matching plays an important role in 3D reconstruction in the context of digital museums. At present, it has problems such as occlusion, weak texture, and discontinuous disparity, which restrict the development of binocular vision.
Peng Peng, Jun Han
doaj   +1 more source

The influence of illumination and cast shadows on prey detectability by predators

Royal Society Open Science
Many species use camouflage to dissimulate their true form and avoid detection or recognition. In natural habitats, the three-dimensional structure of an organism’s body can present challenges for camouflage, as overhead illumination creates luminance ...
Lou Cauchi, Keagan Reynolds, Sami Merilaita, Jennifer Kelley   +3 more
doaj   +1 more source

Differential frequency of autotomy in two colour morphs of the grasshopper Atractomorpha lata (Orthoptera: Pyrgomorphidae) on dense and sparse grass substrates

European Journal of Entomology
Background colour matching is considered highly effective in preventing the detection of an animal by visual predators. In a grasshopper species with green-brown polymorphism, a green morph on grass and a brown morph on bare ground or dead litter may be ...
Jun-Ya IDE
doaj   +1 more source

Early Body Mass Index z‐Score Change and Resolution of Severe Malnutrition in Children With Sickle Cell Anemia in a Low‐Income Setting: A Prospective Single‐Arm Extension Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Children with sickle cell anemia (SCA) in low‐income settings are at risk of severe malnutrition, but optimal nutritional management has not been established. We evaluated an intensified ready‐to‐use therapeutic food (RUTF) regimen in children with persistent severe malnutrition after initial treatment and assessed whether early ...
Safiya Gambo, Shehu Umar Abdullahi, Hassan Adam Murtala, Halima Kabir, Khadija A. Shamsu, Sari A. Acra, Virginia A. Stallings, Mark Rodeghier, Michael R. DeBaun, Lauren J. Klein   +9 more
wiley   +1 more source

Seasonal plasticity in anti‐predatory strategies: Matching of color and color preference for effective crypsis

Evolution Letters, 2019
Effective anti‐predatory strategies typically require matching appearance and behavior in prey, and there are many compelling examples of behavioral repertoires that enhance the effectiveness of morphological defenses. When protective adult morphology is
Erik vanBergen, Patrícia Beldade
doaj   +1 more source

A memetic fingerprint matching algorithm [PDF]

, 2007
Minutiae point pattern matching is the most common approach for fingerprint verification. Although many minutiae point pattern matching algorithms have been proposed, reliable automatic fingerprint verification remains as a challenging problem, both with
Howells, Gareth, Sheng, Weiguo, Deravi, Farzin, Fairhurst, Michael   +3 more
core   +1 more source