Results 101 to 110 of about 5,609,663 (254)

A reappraisal of the Middle to Later Stone Age prehistory of Morocco Réévaluer la préhistoire du Maroc, du Middle Stone Age au Later Stone Age

open access: yesJournal of the Royal Anthropological Institute, EarlyView.
Over the last 25 years, perceptions of the early prehistory of Northwest Africa have undergone radical changes due to new fieldwork projects and a corresponding growth in scientific interest in the region. Much of this work has been focused in Morocco, known for its extremely rich fossil and archaeological records in caves and rock shelters.
Nick Barton   +3 more
wiley   +1 more source

Multiple solutions to fractional equations without the Ambrosetti-Rabinowitz condition

open access: yesElectronic Journal of Differential Equations, 2017
In this article we study a class of fractional Laplace equations which do not satisfy the Ambrosetti-Rabinowitz condition (AR-condition). We establish the existence of three nontrivial solutions and of multiple sign changing solutions by using Morse ...
Ruichang Pei, Jihui Zhang, Caochuan Ma
doaj  

[Portrait of unidentified family of thirteen, New South Wales] [picture] /

open access: yes, 1890
This negative is in private ownership.; Part of: Robert Morse Withycombe collection.; Title devised by cataloguer based on information supplied by donor.; Condition of original: Some damage.; Electronic reproduction.
Withycombe, Robert Morse, 1868-1936.
core  

Unravelling Evolutionary Dynamics of Female Sexual Cannibalism and Male Reproductive Strategies in Spiders

open access: yesIntegrative Zoology, EarlyView.
Sexual cannibalism (SC), where one mating partner consumes the other in the context of mating, is especially prevalent among spiders. However, the evolution of SC in spiders is still not fully understood. We review key hypotheses for SC and explore how female‐initiated SC has driven the evolution of various male counter‐adaptations to mitigate its ...
Simona Kralj‐Fišer   +3 more
wiley   +1 more source

Existence of solutions to a superlinear p-Laplacian equation

open access: yesElectronic Journal of Differential Equations, 2001
Using Morse theory, we establish the existence of solutions to the equation $-Delta_p u = f(x,u)$ with Dirichlet boundary conditions. We assume that $int_0^s f(x,t),dt$ lies between the first two eigenvalues of the p-Laplacian.
Shibo Liu
doaj  

[Portrait of unidentified surveying team member (?) with camping equipment and pick, New South Wales] [picture] /

open access: yes, 1890
This photograph is in private ownership.; Part of: Robert Morse Withycombe collection.; Title devised by cataloguer based on information supplied by donor.; Condition of original: Some pigment loss.; Electronic reproduction.
Withycombe, Robert Morse, 1868-1936.
core  

Multiparameter Discrete Morse Theory [PDF]

open access: yes
The main objective of this paper is to extend Morse-Forman theory to vector-valued functions. This is mostly motivated by the need to develop new tools and methods to compute multiparameter persistence.
Kaczynski, Tomasz   +2 more
core   +1 more source

Multiple Community Informants Enhance Public Information About Predators Across a Latitudinal Gradient in Bird Communities of China

open access: yesIntegrative Zoology, EarlyView.
We investigated bird communities across a 1650‐km latitudinal gradient in China where there is a transition in which “community informant” species play important roles in providing public information about predation, from babblers in the south to tits in the north. We found that both babblers and tits jointly contribute vocalizations when they are both
Jiahao Wu   +4 more
wiley   +1 more source

[Rural working animals including driving horse, two riding horses, two logging horses, and an ox team, with five unidentified men, New South Wales] [picture] /

open access: yes, 1890
This photograph is in private ownership.; Part of: Robert Morse Withycombe collection.; Title devised by cataloguer based on information supplied by donor.; Condition of original: Some discolouration and torn edges.; Electronic reproduction.
Withycombe, Robert Morse, 1868-1936.
core  

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