Results 131 to 140 of about 11,972 (252)

Efficient Multidisciplinary Analysis Approach for Conceptual Design of Aircraft with Large Shape Change [PDF]

open access: yes, 2009
The conceptual and preliminary design processes for aircraft with large shape changes are generally difficult and time-consuming, and the processes are often customized for a specific shape change concept to streamline the vehicle design effort ...
Chwalowski, Pawel   +4 more
core   +1 more source

Democratising Multi‐Projector Displays

open access: yesComputer Graphics Forum, EarlyView.
Spatially augmented reality (SAR) transforms large, surround, collaborative experiences out of VR/AR headsets to the real world by merging content from projectors with the physical environment. This detailed state‐of‐the‐art survey reports on the advancements in multi‐projector aggregation and hardware technologies used to achieve SAR and build ...
Aditi Majumder, Muhammad Twaha Ibrahim
wiley   +1 more source

The caliph and the falcons: a ninth‐century history from Iceland to Iraq

open access: yesEarly Medieval Europe, EarlyView.
In the late ninth and early tenth centuries, an extraordinary number of falcons were given to the ʿAbbāsid caliphs in Baghdad, many of which were white. Gifts from competing dynasties in the northern provinces of the Caliphate, at least some of these birds were almost certainly gyrfalcons from near the Arctic Circle.
Caitlin Ellis, Sam Ottewill‐Soulsby
wiley   +1 more source

An Efficient SDOF Sweep Wing Morphing Technology for eVTOL-UAV and Experimental Realization

open access: yesDrones
The presented study demonstrates that UAVs can be flown with a morphing wing to develop essential aerodynamic efficiency without a tail structure, which decides the operational cost and flight safety.
Palaniswamy Shanmugam   +2 more
doaj   +1 more source

Perspectives on Highly Adaptive or Morphing Aircraft [PDF]

open access: yes, 2009
The ability to adapt to different flight conditions has been fundamental to aircraft design since the Wright Brothers first flight. Over a hundred years later, unconventional aircraft adaptability, often called aircraft morphing has become a topic of ...
Busan, Ronald C.   +3 more
core   +1 more source

Behavioral Responses of Two Common Woodland Salamanders to Novel Urban Stimuli

open access: yesEthology, EarlyView.
We examined behavioral responses of the Eastern Red‐backed Salamander (Plethodon cinereus) and Northern Ravine Salamander (P. electromorphus) to novel urban stimuli. The Northern Ravine Salamander exhibited increased thigmotaxis in the presence of concrete pavers simulating roads and walkways.
Amy Q. Friemoth   +2 more
wiley   +1 more source

Environmental correlates of spatio‐temporal patterns of colour variation in a bird of prey: The common buzzard (Buteo buteo)

open access: yesIbis, EarlyView.
High colour variability in animals has been associated with adaptability to environmental change. Establishing how such variability is distributed in time and space, and identifying environmental correlates, can help understand the processes driving it.
Kaspar Delhey   +4 more
wiley   +1 more source

On the effect of low blowing ratio continuous jets on wingtip vortex characteristics [PDF]

open access: yes, 2018
Vortices are an unavoidable effect of flight, which appear behind the wing with a bounded length. The strength of these vortices, which are extremely stable, is due to the lift force [1].
Blanco-Rodríguez, Francisco José   +3 more
core  

Artists in Nursery Schools: Enabling Free Play and Self‐Expression Through the Arts

open access: yesInternational Journal of Art &Design Education, EarlyView.
Abstract The purpose of this research was to analyse the presence of artists in nursery schools by means of two proposals to promote free play and self‐expression for children between one and 3 years‐old and their families. Researchers compiled evidence from the perspective of three atelieristas and other participating adults, through interviews and ...
Ainhoa Gómez‐Pintado   +1 more
wiley   +1 more source

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