Results 61 to 70 of about 10,965 (333)
International Journal of Osteoarchaeology, EarlyView.ABSTRACT Studying goose domestication through archaeological finds has been challenging due to the similar skeletal morphology of the European domestic goose and its wild progenitor, the greylag goose (Anser anser). We analyzed stable carbon (δ13C) and nitrogen (δ15N) isotopes from bone collagen of subfossil domestic and potentially domestic geese to ...
Johanna Honka +7 more
wiley +1 more source
Global Warming and Mass Extinctions Associated With Large Igneous Province Volcanism
Geophysical Monograph Series, Page 83-102., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
David P. G. Bond, Yadong Sun
wiley +2 more sources
Model-Based Slippage Estimation to Enhance Planetary Rover Localization with Wheel Odometry
Applied Sciences, 2021 The exploration of planetary surfaces with unmanned wheeled vehicles will require sophisticated software for guidance, navigation and control. Future missions will be designed to study harsh environments that are characterized by rough terrains and ...
Anna Maria Gargiulo +2 more
doaj +1 more source
The feasibility principle in community ecology
Oikos, EarlyView.The structure and function of ecological communities emerge from interactions among populations within specific environmental contexts. Yet we still lack general principles that explain how communities assemble, which patterns we should expect, and when transitions occur across diverse settings.
Serguei Saavedra
wiley +1 more source
AerospaceIn order to explore the influence of wheel surface structure on the trafficability of planetary rovers on soft ground, three kinds of wheels with different rigid wheel surface structures were selected for research. The basic performance parameters of the
Xinju Dong +6 more
doaj +1 more source
A Four-Wheel-Rhombus-Arranged Mobility System for a New Lunar Robotic Rover
International Journal of Advanced Robotic Systems, 2013 Different from traditional ground vehicles, planetary robotic rovers with limited weight and power need to travel in unfamiliar and extremely arduous environments.
Guilin Wen +7 more
doaj +1 more source
Oikos, EarlyView.Landscape heterogeneity is widely recognized as a driver of biodiversity, yet its consequences for above‐ground, foliage‐dwelling insect communities under active grassland management remain underexplored. Patch‐burn grazing (PBG), which rotates fire across patches within a grazed landscape, is designed to promote spatial and temporal heterogeneity by ...
Zachary L. T. Bunch +5 more
wiley +1 more source
Improving engineering models of terramechanics for planetary exploration
Results in Engineering, 2019 This short letter proposes more consolidated explicit solutions for the forces and torques acting on typical rover wheels, that can be used as a method to determine their average mobility characteristics in planetary soils.
A.J.R. Lopez-Arreguin, S. Montenegro
doaj +1 more source
Bayesian Decision Making for Planetary Micro-Rovers [PDF]
Infotech@Aerospace 2012, 2012 This study focuses on the implementation of a simple statistical algorithm to classify and map objects sensed by a micro-rover proto-implementation of a simple statistical algorithm to classify and map objects sensed by a micro-rover proto-type in real world testing.
Mark A. Post +2 more
openaire +1 more source
How can children and young people have a voice in urban treescapes?
People and Nature, EarlyView.Abstract Scientific understanding of climate change has, to date, failed to result in sufficient action. This paper proposes that a deficit model of top‐down learning and dissemination in relation to public engagement with science may be part of the problem, particularly when considering the attitudes, values and empowerment of children and young ...
Simon Carr +10 more
wiley +1 more source