Results 121 to 130 of about 2,744 (247)

Learning from bat: Aerodynamics of actively morphing wing

Theoretical and Applied Mechanics Letters, 2015
Different from birds and insects, bats have complex wing-deformation capacity to generate high aerodynamic forces. In flight, the actively morphing of bat wing includes the twisting from wing root to wing tip, the cambering along the chordwise direction,
Yongliang Yu, Ziwu Guan
doaj   +1 more source

Physical Anchoring‐Assisted Mechanically Guided Assembly for Material‐Independent 3D Mesostructures

Small, EarlyView.
Conventional mechanically guided 3D assembly relies on selective chemical bonding between 2D precursors and elastomeric substrates, imposing fundamental limitations on material compatibility and scalability. Here, we present a physically anchored, buckling‐guided assembly platform based on a rod array patterned elastomeric substrate (RPES).
Yeonhee Heo, Pei Liu, Jeongmin Yoo, Jae Hyuk Hwang, Gooyoon Chung, Dong‐Gyun Kim, Raudel Avila, Yoonseok Park   +7 more
wiley   +1 more source

Design & modelling of a composite rudderless aeroelastic fin structure [PDF]

, 2010
This thesis presents the study of a gapless and rudderless aeroelastic fin (GRAF) to enhance the directional stability and controllability of an aircraft. The GRAF concept was proposed and developed in the wake of previous research, targeted to improve
Trapani, Matteo
core  

Morphing wing with skin discontinuity – kinematic concept [PDF]

, 2017
Purpose This paper aims to describe the concept of morphing tailless aircraft with discontinuous skin and its preliminary kinematic solution. Project assumptions, next steps and expected results are briefly presented.
Andrzej Tarnowski
core   +1 more source

Evaluating machine learning models for multi‐species wildlife detection and identification on remote sensed nadir imagery in South African savanna

Wildlife Biology, EarlyView.
This research paper investigates the efficacy of leading machine learning (ML) models for detecting and identifying ungulate species in African savanna using nadir imagery from unmanned aerial vehicles (UAVs). Traditional aerial counting methods, while widely used, suffer from significant limitations in accuracy and precision, in part due to human ...
Paul Allin, Fadel Seydou, Radloff Frans, Andrew Davies, Alison Leslie   +4 more
wiley   +1 more source

Aerodynamic Shape Design and Validation of an Advanced High-Lift Device for a Regional Aircraft with Morphing Droop Nose

International Journal of Aerospace Engineering, 2019
In the present work, the aerodynamic shape design of an advanced high-lift system for a natural laminar flow (NLF) wing, based on the combination of a morphing droop nose and a single slot trailing edge flap, is presented.
Alessandro De Gaspari, Frédéric Moens
doaj   +1 more source

Repeated trends in altitudinal gradients of diversity: How habitat filtering and biotic interactions structure ecological communities

Journal of Animal Ecology, EarlyView.
This study reveals that tropical butterfly communities show remarkably consistent elevational patterns of diversity and phylogenetic structure across regions with contrasting evolutionary histories, demonstrating how regional species pools and local ecological factors jointly shape biodiversity along altitudinal gradients.
Raphaël Fougeray, Arlety Roy, Christelle Penager, Guillaume Correa Pimpao, Ronald Mori Pezo, Léo‐Paul Charlet, Nino Page, Ombeline Sculfort, Stéphanie Gallusser, Marianne Elias, Melanie McClure   +10 more
wiley   +1 more source

Amidst (waste) abundance: world‐making and struggles in hosting a municipal landfill in the Bolivian lowlands Au milieu de l'abondance (de déchets) : fabrication du monde et luttes liées à la gestion d'une décharge municipale dans les basses terres de Bolivie

Journal of the Royal Anthropological Institute, EarlyView.
In recent decades, solid waste has proliferated worldwide, becoming a pressing global issue. This article explores the role of Indigenous people dwelling within and upon emerging waste scenarios, with a specific focus on involved forms of sociality and ontological contestation. Drawing on the case of a municipal landfill sited on a Guarani community in
Vanesa Martín Galán
wiley   +1 more source

The Not‐So‐Neue Frau: Weimar Berlin's Modern Women and Generational Identity After 1945

Gender &History, EarlyView.
ABSTRACT This article studies the post‐1945 literary careers of Gabriele Tergit and Ilse Langner, two ageing German writers. Both had enjoyed promising careers as young women in Weimar Berlin, but Nazism and war disrupted their professional trajectories in varying ways. After 1945, they tried and failed to recapture their Weimar‐era success, eventually
Katharina Friege
wiley   +1 more source

Bioinspired Design, Fabrication, and Wing Morphing of 3D‐Printed Magnetic Butterflies

Advanced Intelligent Systems
Monarch butterflies’ remarkable migratory abilities, facilitated by their efficient wing structures, inspire the development of bioinspired soft robots and microaerial vehicles.
Muhammad Bilal Khan, Kilian Schäfer, Florian Hofmann, Matthias Lutzi, Eduardo Sergio Oliveros‐Mata, Oleksandr Pylypovskyi, Denys Makarov, Oliver Gutfleisch   +7 more
doaj   +1 more source