Results 81 to 90 of about 957,990 (310)

Inconsistency of the Capital Asset Pricing Model in a Multi‐Currency Environment

International Journal of Finance &Economics, EarlyView.
ABSTRACT The capital asset pricing model (CAPM) is a widely adopted model in asset pricing theory and portfolio construction because of its intuitive nature. One of its main conclusions is that there exists a global market portfolio that each rational investor should hold in proportion to the risk‐free asset. In this paper, we demonstrate theoretically
Khalifa Al‐Thani, Domenico Mignacca, Gianluca Fusai, Fabio Caccioli, Guido Germano   +4 more
wiley   +1 more source

Necessary and sufficient conditions for discrete inequalities of Jensen–Steffensen type with applications

Journal of Inequalities and Applications
In this paper we give a necessary and sufficient condition for the discrete Jensen inequality to be satisfied for real (not necessarily nonnegative) weights. The result generalizes and completes the classical Jensen–Steffensen inequality. The validity of
László Horváth
doaj   +1 more source

Bounds on the heat kernel of the Schroedinger operator in a random electromagnetic field

, 2006
We obtain lower and upper bounds on the heat kernel and Green functions of the Schroedinger operator in a random Gaussian magnetic field and a fixed scalar potential. We apply stochastic Feynman-Kac representation, diamagnetic upper bounds and the Jensen
Brüning J, Dudley R M, Erdös L, Fernique X, Fetter A L, Goodman J W, Helffer B, Hess H, Ikeda N, Leschke H Warzel S Weichlein A, Levy P, Loss M, Malliavin P, Mandel L, Marshall A W, Maurin K, Milonni P W, Pastur L, Simon B, Skorohod A V, Z Haba   +20 more
core   +3 more sources

Spreading quality improvement in bronchiolitis care: A qualitative study of barriers and facilitators to de‐implementation efforts across Alberta′s healthcare settings

Journal of Hospital Medicine, EarlyView.
Abstract Background Low‐value care remains prevalent in bronchiolitis management despite evidence‐based guidelines. De‐implementation initiatives face unique challenges compared with traditional implementation efforts, particularly when spreading across diverse healthcare settings.
Nathan M. Solbak, Ashleigh Jensen, Erin Thompson, Aaron Peterson, Lily Ragan, Daina Thomas, David W. Johnson, J. A. Michelle Bailey   +7 more
wiley   +1 more source

A Converse of the Jensen Inequality for Convex Mappings of Several Variables and Applications [PDF]

, 1999
In this paper we point out a converse result of the celebrated Jensen inequality for differentiable convex mappings of several variables and apply it to counterpart well-known analytic inequalities. Applications to Shannon's and Rényi's entropy mappings
Dragomir, Sever S
core  

A uinivariate extension of Jensens inequality

Journal of Research of the National Bureau of Standards, 1980
The result in this paper explains some of the qualitative nature of Jensen's inequality. It is shown that the more disperse the distribution of a random variable is, the smaller is the expectation of any concave function of it. This result can be used to show the inadequacy of some current methods of reporting environmental data by using geometric ...
openaire   +3 more sources

CSR disclosure and investment efficiency in MENA countries: The moderating role of CSR committee

Strategic Change, EarlyView.
ABSTRACT Corporate social responsibility disclosure (CSRD) is often recognized as a transparency mechanism that allows companies to communicate their commitment to CSR. However, CSRD may also exacerbate agency conflicts. This study addresses these two contrasting perspectives by investigating the impact of CSRD on investment efficiency and exploring ...
Mohamed Malek Belhoula, Imen Khanchel, Naima Lassoued, Rouba Jebri   +3 more
wiley   +1 more source

Generalized integral Jensen inequality

Journal of Inequalities and Applications
In this paper we introduce necessary and sufficient conditions for a real-valued function to be preinvex. Some properties of preinvex functions and new versions of Jensen’s integral type inequality in this setting are given.
Saeed Nazari Pasari, Ali Barani, Naser Abbasi   +2 more
doaj   +1 more source

A Framework for Understanding and Evaluating Localization: The Case of HelpAge International

Public Administration and Development, EarlyView.
ABSTRACT Many transnational non‐governmental organizations (TNGOs) are reevaluating their organizational forms and norms as they pursue localization. Localization itself is a contested and multifaceted concept, however, complicating the design, implementation, and evaluation of localization efforts.
Hans Peter Schmitz, George E. Mitchell
wiley   +1 more source

$\mathcal{S}$-Matrix of Nonlocal Scalar Quantum Field Theory in the Representation of Basis Functions

, 2018
Nonlocal quantum theory of one-component scalar field in $D$-dimensional Euclidean spacetime is studied in representations of $\mathcal{S}$-matrix theory for both polynomial and nonpolynomial interaction Lagrangians.
Bernard, M., Chebotarev, I. V., Guskov, V. A., Ogarkov, S. L.   +3 more
core   +1 more source