Results 81 to 90 of about 81,533 (253)

Moose indifferent to canopy loss from forest disturbance by bark beetles

The Journal of Wildlife Management, EarlyView.
Moose showed strikingly similar patterns of habitat selection before and after widespread forest disturbance following an infestation of bark beetles. Our findings indicate that beetle‐kill does not appreciably alter habitat quality for moose and highlight the importance of riparian areas in sustaining moose as they contend with changing forests ...
Alexander B. May, Rebecca L. Levine, Lee Knox, Corey Class, Matthew J. Kauffman, Kevin L. Monteith   +5 more
wiley   +1 more source

Pinwheel stabilization by ocular dominance segregation

, 2009
We present an analytical approach for studying the coupled development of ocular dominance and orientation preference columns. Using this approach we demonstrate that ocular dominance segregation can induce the stabilization and even the production of ...
B. Chapman, Fred Wolf, K. Obermayer, Lars Reichl, M. Hübener, M. C. Crair, N. Swindale, N. P. Issa, P. Mannevile, Siegrid Löwel, W. H. Bosking   +10 more
core   +1 more source

Experimental Modal Analysis‐Driven Gaussian Process Regression Modeling of Rectangular Steel Beams With Various Hole Geometries

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Understanding the dynamic behavior of structural components is crucial for optimizing performance and ensuring structural integrity. This study presents a new method that combines a systematic experimental investigation of four distinct hole geometries (circular, square, compact rectangular, and long rectangular) with varying hole counts, all ...
Amir Hossein Rabiee, Majid Rajaei, Mohammad Hossein Mahdavi Nasab, Parsa Shafiei   +3 more
wiley   +1 more source

Gray Wolf Optimization Algorithm for Multi-Constraints Second-Order Stochastic Dominance Portfolio Optimization [PDF]

Algorithms, 2018
In the field of investment, how to construct a suitable portfolio based on historical data is still an important issue. The second-order stochastic dominant constraint is a branch of the stochastic dominant constraint theory. However, only considering the second-order stochastic dominant constraints does not conform to the investment environment under ...
Yixuan Ren, Tao Ye, Mengxing Huang, Siling Feng   +3 more
openaire   +3 more sources

New Constraints on the Origin of the Short-Term Cyclical Variability of the Wolf-Rayet Star WR 46

, 2011
The Wolf-Rayet star WR 46 is known to exhibit a very complex variability pattern on relatively short time scales of a few hours. Periodic but intermittent radial velocity shifts of optical lines as well as multiple photometric periods have been found in ...
A. M. T. Pollock, A. Talavera, Bauer, Berghoefer, Chené, Chené, Crowther, Crowther, Flores, Glatzel, Glatzel, Hanson, Hillier, Illarionov, Lefèvre, Marchenko, Marchenko, Mitra, Monderen, Moos, Morel, N. St-Louis, Niemela, Noels, Parsignault, Pollock, Press, Prestwich, S. Carpano, S. V. Marchenko, Sahnow, Schaerer, Schmutz, Silverman, Skinner, Skinner, St-Louis, Stevens, Townsend, V. Hénault-Brunet, van Genderen, Veen, Wessolowski, Willis, Willis   +44 more
core   +1 more source

Matching habitat choice could be brightness‐based instead of hue‐based in green‐brown polymorphic grasshoppers

Oikos, EarlyView.
Some prey species have evolved background matching, that is they resemble their surrounding environment in terms of colour and/or brightness. When prey populations inhabit patchy environments, they may even have evolved specialised phenotypes: each phenotype matching a specific subset of patches.
Lilian Cabon, Holger Schielzeth
wiley   +1 more source

Unequal Error Protection QPSK Modulation Codes [PDF]

, 1992
The authors use binary linear UEP (LUEP) codes, in combination with a QPSK signal set and Gray mapping, to obtain new efficient block QPSK modulation codes with unequal minimum squared Euclidean distances.
Lin, Shu, Morelos-Zaragoza, Robert H
core   +1 more source

Arbuscular mycorrhiza in the urban jungle: Glomeromycotina communities of the dominant city tree across Amsterdam

PLANTS, PEOPLE, PLANET, EarlyView.
Trees in cities provide a great number of benefits to people and nature, but they are challenged by harsh conditions. Trees rely on helpful fungi in their roots to get essential nutrients from the soil, but we do not know which of these fungi are resistant to city landscapes.
Casper T. Verbeek, Sofia I. F. Gomes, Vincent S. T. F. Merckx   +2 more
wiley   +1 more source

Dynamic performance improvement method of energy storage DC/DC converter for grid-connected wind turbine with energy storage

电力工程技术
The internal storage system of a wind turbine usually needs to be connected to the DC bus using a DC/DC converter. However，due to the poor dynamic performance of the energy storage DC/DC converter using traditional PI control，it is easy to cause a large ...
Haonan SHI, Yichao SUN, Xiaobo TANG, Wei WANG, Dongmei YANG, Zheng WEI   +5 more
doaj   +1 more source

Prediction of Fading for Painted Cultural Relics Using the Optimized Gray Wolf Optimization-Long Short-Term Memory Model

Applied Sciences
Cultural heritage digitization is of great significance for the protection, restoration, and rejuvenation of cultural relics. In particular, the investigation of fading mechanisms is essential for virtual restoration to accurately recreate the original ...
Zhen Liu, An-Ran Zhao, Si-Lu Liu
doaj   +1 more source