Results 131 to 140 of about 10,117 (291)

Greater future range expansions in alien than native ant species

Oikos, EarlyView.
There is growing concern that many species may not be able to track suitable conditions under climate change and suffer range contractions as a result. At the same time, alien species introduced to novel geographic ranges are often assumed to benefit from climate change.
Tongyi Liu, Sébastien Ollier, Cleo Bertelsmeier   +2 more
wiley   +1 more source

Homotopy classification of bilinear maps related to octonion polynomial multiplications

, 2010
A matrix description of the multiplication in the Cayley–Dickson algebras is given. With the aid of such description, the homotopy class of the Hopf construction of the nonsingular bilinear map given by the multiplication of two linear polynomials with ...
Rodrı´guez-Ordóñez, Hugo
core   +1 more source

Assessing trade‐off risk between crop production and vertebrate biodiversity in three African countries

People and Nature, EarlyView.
Abstract Governments worldwide are committed to eliminating hunger and conserving biodiversity, reflected in United Nations Sustainable Development Goals 2 (Zero Hunger) and 15 (Life on Land). Expanding agricultural lands to meet growing food demands often threatens biodiversity, creating potential trade‐offs between these objectives. To understand the
Abbie S. A. Chapman, Selase Kofi Adanu, Carole Dalin, Adam Devenish, Geoffrey H. Griffiths, Elizabeth J. Z. Robinson, Barbara Adolph, Phil Franks, Tagel Gebrehiwot, Jacob Mwitwa, Nathalie Seddon, Joseph A. Tobias, Tim Newbold   +12 more
wiley   +1 more source

YOLO-ED: An efficient lung cancer detection model based on improved YOLOv8.

PLoS ONE
In recent years, You Only Look Once (YOLO) models have gradually been applied to medical image object detection tasks due to their good scalability and excellent generalization performance, bringing new perspectives and approaches to this field. However,
Qingqiang Zeng, Tao Hu, Zijie Chen, Jiexin Zheng, Jianqing Li, Yuanyuan Pan   +5 more
doaj   +1 more source

Effects of Cooling Rates on Self‐Reinforced Polyethylene Composites via Multiscale Experimental Characterizations

Polymer Composites, EarlyView.
(top) fabrication and multi‐scale characterizations of self‐reinforced polyethylene composites (PE‐SRCs); (bottom) effects of cooling rates on mechanical properties and crystal morphologies of PE‐SRCs. ABSTRACT This study investigates cooling rate effects on self‐reinforced polyethylene composites (PE‐SRCs), focusing on macroscopic thermal and ...
Yelin Ni, Yao Qiao, Logan Kearney, Raveen John, Dounia Boushab, Ethan Nickerson, Amit Naskar, Kevin Simmons   +7 more
wiley   +1 more source

Spatial Variability of Permafrost and Active Layer Thickness in a Forested Hillslope of the Taiga Shield

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Under continued climate warming, understanding present‐day permafrost distribution and the controls on ground thaw are critical for predicting permafrost thaw trajectories and associated implications. This study presents a high‐resolution investigation of permafrost extent and active layer thickness (ALT) across a coniferous forested hillslope
Alana Muenchrath, Christopher Spence, Andrew Ireson   +2 more
wiley   +1 more source

A More Efficient 1–Checkable Secure Outsourcing Algorithm for Bilinear Maps

, 2017
Part 5: Protocols and AlgorithmsInternational audienceWith the rapid advancements in innovative technologies like cloud computing, internet of things, and mobile computing, the paradigm to delegate the heavy computational tasks from trusted and resource ...
İsa Sertkaya, Mehmet Sabir Kiraz, Kiraz, Mehmet,, Öznur Kalkar, Sertkaya, İsa, Uzunkol, Osmanbey, Osmanbey Uzunkol, Kalkar, Öznur   +7 more
core   +1 more source

Bivariate postprocessing of wind vectors

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We introduce three novel bivariate postprocessing approaches and analyze their performance for joint postprocessing of bivariate wind‐vector components in Germany. Bivariate vine‐copula‐based models, a bivariate gradient‐boosted version of ensemble model output statistics (EMOS), and a bivariate distributional regression network (DRN) are compared with
Ferdinand Buchner, David Jobst, Annette Möller, Claudia Czado   +3 more
wiley   +1 more source

New views of some invariants associated with the Cartesian 2D velocity gradient tensor

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Vorticity and divergence of horizontal flow are fundamental quantities in meteorology; both are linear functions of the four elements of the 2D velocity gradient tensor and both are formally unchanged under coordinate rotation. We explore four quadratic functions of the elements that are geometrically invariant in this sense, finding some novel ...
I. Roulstone, S. A. Clough, A. A. White
wiley   +1 more source

Output‐Feedback H∞$$ {H}_{\infty } $$ Detector‐Based Control of Continuous‐Time Markov Jump Lur'e Systems With Sector‐Bound Optimization

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT This paper addresses the problem of dynamic output‐feedback H∞$$ {H}_{\infty } $$ detector‐based control for continuous‐time Markov Jump Lur'e Systems with uncertain transition rate matrices. In contrast to conventional approaches, the proposed synthesis conditions are derived using Finsler's lemma, introducing additional slack variables to ...
Lucas P. M. Silva, Cecilia F. Morais, Ricardo C. L. F. Oliveira   +2 more
wiley   +1 more source