Results 81 to 90 of about 28,634 (306)
An inequality for expectation of means of positive random variables
, 2016 Suppose that $X,Y$ are positive random variable and $m$ a numerical (commutative) mean. We prove that the inequality ${\rm E} (m(X,Y)) \leq m({\rm E} (X), {\rm E} (Y))$ holds if and only if the mean is generated by a concave function. With due changes we
Gibilisco, Paolo, Hansen, Frank
core +1 more source
Quantitative estimates for bivariate Stancu operators
Mathematical Methods in the Applied Sciences, 2018 In this paper, we introduce Voronovskaja‐type and Grüss–Voronovskaja‐ type theorems in quantitative mean with the help of the usual modulus of continuity for bivariate Stancu operators, which are different from a tensor product setting.
Gülen Başcanbaz‐Tunca +2 more
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Consumers' Intention to Use Circular Business Models: A Configurational Analysis
Business Strategy and the Environment, EarlyView.ABSTRACT Circular business models (CBMs) integrate ecological sustainability and resource efficiency into core business strategies, but their success depends on consumers' intention to use. Grounded in expectancy–value theory, this study investigates how product‐related factors (perceived usefulness, convenience, value for money, and performance risk ...
Christof Falkenberg +4 more
wiley +1 more source
Co-operational bivariant theory
Mathematics Research ReportsFor a covariant functor W. Fulton and R. MacPherson defined an operational bivariant theory associated to this covariant functor. In this paper we will show that given a contravariant functor one can similarly construct a “dual” version of an operational bivariant theory, which we call a co-operational bivariant theory. If a given contravariant functor
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Business Strategy and the Environment, EarlyView.ABSTRACT This study examines corporate environmental reporting practices among listed companies in the European Union during the period 2018–2022, within the context of the Non‐Financial Reporting Directive (NFRD). To this end, an Environmental Disclosure Index (EDI) is constructed based on qualitative reporting items, and panel‐data models are ...
Rosalva Pinto‐Braga +2 more
wiley +1 more source
The Voronovskaja theorem for Bernstein-Schurer bivariate operators
Journal of Numerical Analysis and Approximation Theory, 2004 The Voronovskaja theorem for the Bernstein-Schurer bivariate operatos is established.
Dan Bărbosu
doaj +2 more sources
On the Convergence of a Family of Chlodowsky Type Bernstein-Stancu-Schurer Operators
Journal of Function Spaces, 2018 We construct a new family of univariate Chlodowsky type Bernstein-Stancu-Schurer operators and bivariate tensor product form. We obtain the estimates of moments and central moments of these operators, obtain weighted approximation theorem, establish ...
Lian-Ta Shu, Guorong Zhou, Qing-Bo Cai
doaj +1 more source
Partial shape preserving approximations by bivariate shepard operators
Computers & Mathematics with Applications, 2001 The authors prove that the bivariate Shepard interpolation operators preserve the monotonicity and the convexity of bivariate functions in neighbourhoods of certain points. This extends results for the univariate case obtained by \textit{S. G. Gal} and \textit{J. Szabados} [Partial shape preserving approximation by interpolation operators, in functions,
Anastassiou, G.A., Gal, S.G.
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Greening the Bottom Line: Public Funding for Circular Economy Initiatives and Financial Stability
Business Strategy and the Environment, EarlyView.ABSTRACT Public funding for circular economy (CE) initiatives plays a crucial role in shaping corporate financial performance, yet its effects remain underexplored. Grounded in the resource‐based view (RBV) of the firm, this study investigates the financial impact of CE funding on private firms, using Portugal as a case study. It analyses the financial
Rui Cruz +3 more
wiley +1 more source