Results 101 to 110 of about 49,660 (224)

The spread of non‐native species

Biological Reviews, EarlyView.
ABSTRACT The global redistribution of species through human agency is one of the defining ecological signatures of the Anthropocene, with biological invasions reshaping biodiversity patterns, ecosystem processes and services, and species interactions globally.
Phillip J. Haubrock, Ali Serhan Tarkan, Irene Martín‐Forés, Stelios Katsanevakis, Ronaldo Sousa, Ismael Soto, Andy J. Green, Antonín Kouba, Teun Everts, Victoria Dominguez Almela, Nadège Belouard, Cang Hui, Jamie Bojko, Victor Deklerck, Margaux Boeraeve, Franz Essl, J. Robert Britton   +16 more
wiley   +1 more source

Advances in Triboelectric Nanogenerators With Rotating Structure

Carbon Energy, EarlyView.
The rotating TENG has been widely studied for its superiorities of simple structure, high efficiency, and stable output. This review introduced the four different principles of rotating TENG and offered a thorough summary for performance and application research through three‐level classification. Importantly, the current existing problems, challenges,
Chuguo Zhang, Chunxu Xue, Yutong Chen, Yujie Qiang, Seeram Ramakrishna   +4 more
wiley   +1 more source

EXPONENTIAL CONVEXITY OF THE FAVARD'S INEQUALITY AND RELATED RESULTS

Contributions, Section of Natural, Mathematical and Biotechnical Sciences, 2017
A b s t r a c t: In this paper we prove positive semi-definiteness of matrices generated by differences deduced from unweighted and weighted Favard's inequality. This implies a surprising property of exponential convexity of this differences which allows us to deduce Gram's, Lyapunov's and Dresher's types of inequalities for this differences.
Latif, Naveed, Pečarić, Josip, Perić, Ivan   +2 more
openaire   +3 more sources

Advanced control of non‐isothermal axial dispersion tubular reactors with recycle‐induced state delay

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract We develop a delay‐aware estimation and control framework for a non‐isothermal axial dispersion tubular reactor modelled as a coupled parabolic‐hyperbolic PDE system with recycle‐induced state delay. The infinite‐dimensional dynamics are preserved without spatial discretization by representing the delay as a transport PDE and adopting a late ...
Behrad Moadeli, Stevan Dubljevic
wiley   +1 more source

Locally convex approach spaces

Applied General Topology, 2003
We continue the investigation of suitable structures for quantified functional analysis, by looking at the notion of local convexity in the setting of approach vector spaces as introduced in [6].
M. Sioen, S. Verwulgen
doaj   +1 more source

On completeness of exponential systems in convex domain

Ufimskii Matematicheskii Zhurnal, 2018
Summary: The work is devoted to studying the completeness of the systems of exponentials in the space of functions analytic in a convex domain. The problem on the completeness of the systems of the exponentials in various functional spaces is classical and was studied by many mathematicians, for instance, by B. Ya. Levin, A. F. Leontiev, A.
openaire   +1 more source

Exponential Convexity Induced by Steffensen’s Inequality and Positive Measures

Results in Mathematics, 2018
Using measure theoretic generalization of Steffensen’s inequality we produce linear functionals and then, through their action on families of already known exponentially convex functions, we construct new examples of exponential convexity.
Julije Jakšetić, Josip Pečarić, Ksenija Smoljak Kalamir   +2 more
openaire   +3 more sources

Rank‐based estimation of propensity score weights via subclassification

Canadian Journal of Statistics, EarlyView.
Abstract Propensity score (PS) weighting estimators are widely used for causal effect estimation and enjoy desirable theoretical properties, such as consistency and potential efficiency under correct model specification. However, their performance can degrade in practice due to sensitivity to PS model misspecification.
Linbo Wang, Yuexia Zhang, Thomas S. Richardson, Xiaohua Zhou   +3 more
wiley   +1 more source

Generalization of cyclic refinements of Jensen’s inequality by Fink’s identity

Journal of Inequalities and Applications, 2018
We generalize cyclic refinements of Jensen’s inequality from a convex function to a higher-order convex function by means of Lagrange–Green’s function and Fink’s identity.
Nasir Mehmood, Saad Ihsan Butt, László Horváth, Josip Pečarić   +3 more
doaj   +1 more source

n-exponential convexity of some dynamic Hardy-type functionals

Journal of Mathematical Inequalities, 2014
Recently, some dynamic Hardy-type inequalities with certain kernels are studied with the help of arbitrary time scales. We use the positive linear functionals obtained from some older results to give non trivial examples of n-exponentially convex functions.
Khan, Khuram Ali, Nosheen, Ammara, Pečarić, Josip   +2 more
openaire   +3 more sources