Results 21 to 30 of about 51,290 (303)

A method for estimating the position and direction of a leader of a set of moving objects

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2012
Movement patterns can be identified when studying a group of moving entities such as a group of people, a flock of birds, a school of fish, a convoy of vehicles, among others. In this paper, it is analyzed a pattern, known as leadership.
Francisco Javier Moreno Arboleda   +2 more
doaj   +1 more source

Effects of Flocks Doping on the Dynamic Mechanical Properties of Shear Thickening Gel

open access: yesAUTEX Research Journal, 2020
Polymethyl methacrylate (PMMA) was used as the dispersed phase and mold silicone was used as the continuous phase to prepare the shear thickening gel (STG) doped with a certain amount of flocks by rotary stirring.
Tan Yuhao   +3 more
doaj   +1 more source

On Monomial Flocks

open access: yesEuropean Journal of Combinatorics, 2001
A flock of a quadratic cone is a partition of a quadratic cone minus its vertex (in 3-dimensional projective space) into plane conics. These objects give rise to a lot of other interesting objects such as translation planes, elation generalized quadrangles, (herds of) ovals, ovoids, regular hyperbolic fibrations, etc. If the associated functions of the
BADER, LAURA, D. GHINELLI, T. PENTTILA
openaire   +4 more sources

Bird flocks [PDF]

open access: yesCurrent Biology, 2020
Steven Portugal introduces the behavioral and aerodynamic underpinnings of aerial flocking in birds.
openaire   +2 more sources

Darkling beetles (Alphitobius diaperinus) and their larvae as potential vectors for the transfer of Campylobacter jejuni and Salmonella enterica serovar paratyphi B variant Java between successive broiler flocks [PDF]

open access: yes, 2008
Broiler flocks often become infected with Campylobacter and Salmonella, and the exact contamination routes are still not fully understood. Insects like darkling beetles and their larvae may play a role in transfer of the pathogens between consecutive ...
Bolder, N.M.   +3 more
core   +1 more source

Housing and Management of Turkey Flocks in Canada [PDF]

open access: yes, 2020
An increased understanding of the turkey sector and how farmers manage flocks can help maintain and improve the health and welfare of turkeys. We conducted a cross-sectional survey among turkey farmers in Canada to gain information regarding general farm
Baes, Christine F.   +14 more
core   +2 more sources

Epidemiology of Mycoplasma agalactiae and Mycoplasma mycoides cluster in flocks of northeastern Brazil

open access: yesCiência Rural, 2018
: The present study aimed to investigate contagious agalactia (CA) in flocks from Pernambuco State. The study involved 225 goats and 63 ewes; 288 milk samples and 100 vaginal swabs were collected in total.
Sandra Batista dos Santos   +6 more
doaj   +1 more source

Stochastic modelling of bird flocks – accounting for the cohesiveness of collective motion

open access: yes, 2022
Collective behaviour can be difficult to discern because it is not limited to animal aggregations such as flocks of birds and schools of fish wherein individuals spontaneously move in the same way despite the absence of leadership. Insect swarms are, for
McIvor, G. E.   +4 more
core   +1 more source

USING POLYMERASE CHAIN REACTION IN DIRECT DETECTION OF MYCOPLASAMA GALLISEPTICUM AND MYCOPLASMA SYNOVIAE INFECTIONS IN BROILER BREEDER FLOCKS IN HAMA PROVINCE IN SYRIA [PDF]

open access: yesAssiut Veterinary Medical Journal, 2013
Mycoplasama gallisepticum (MG) and Mycoplasma Synoviae (MS) are important avian pathogens which cause respiratory diseases resulting in large economic losses in Syria and world-wide poultry industry.
H. ALREFAIE, S. IBRAHIM
doaj   +1 more source

The formation of “mega‐flocks” depends on vegetation structure in montane coniferous forests of Taiwan

open access: yesEcology and Evolution, 2022
A mixed‐species bird flock is a social assemblage where two or more bird species are moving together while foraging and might benefit from increased foraging efficiency and antipredator vigilance.
Chun‐Chieh Liao   +2 more
doaj   +1 more source

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