Results 61 to 70 of about 37,597 (261)

An analysis of annular plate in curvilinear non-orthogonal coordinates with the help of equations of a shell theory

open access: yesStructural Mechanics of Engineering Constructions and Buildings, 2020
The complete system of equations of a linear theory of thin shells in curvilinear non-orthogonal coordinates proposed in the paper was taken as the basis of the investigation.
Sergey N. Krivoshapko
doaj   +1 more source

Asymptotic solution for the Darcy-Brinkman-Boussinesq flow in a pipe with helicoidal shape [PDF]

open access: yesTheoretical and Applied Mechanics, 2018
We study the fluid flow and heat transfer in a helical pipe filled with a sparsely packed porous medium. Motivated by the engineering applications, pipe’s thickness and the distance between two coils of the helix have the same small order of magnitude ...
Pažanin Igor
doaj   +1 more source

Effect of Thermal Undulations on the Bending Elasticity and Spontaneous Curvature of Fluid Membranes

open access: yes, 2000
We amplify previous arguments why mean curvature should be used as measure of integration in calculating the effective bending rigidity of fluid membranes subjected to a weak background curvature.
Helfrich, W., Pinnow, H. A.
core   +1 more source

Cultural Pathways to Sustainability: How Organizational Cultures Shape Firms' ESG Performance

open access: yesCorporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT Understanding how organizational culture shapes firms' environmental, social, and governance (ESG) performance is essential for advancing effective sustainability management. Culture reflects shared values and norms that shape how firms enact ESG principles.
Marianna Delegach   +2 more
wiley   +1 more source

Field theory in normal toroidal coordinates

open access: yesMATEC Web of Conferences, 2018
Field theory is widely represented in spherical and cylindrical coordinate systems, since the mathematical apparatus of these coordinate systems has been thoroughly studied.
Nesnov Dmitry V.
doaj   +1 more source

Fine Grid Numerical Solutions of Triangular Cavity Flow

open access: yes, 2007
Numerical solutions of 2-D steady incompressible flow inside a triangular cavity are presented. For the purpose of comparing our results with several different triangular cavity studies with different triangle geometries, a general triangle mapped onto a
Barragy   +22 more
core   +1 more source

An Experience‐Sampling Study on the Frequency and Diversity of Positive and Negative Affective States

open access: yesEuropean Journal of Social Psychology, EarlyView.
ABSTRACT Ecological models explain social phenomena by assuming specific properties of the world an individual lives in. The evaluative information ecology model (Unkelbach et al. 2019) assumes two such properties: Positive information is more frequent (i.e., positivity prevalence), but negative information is more diverse (i.e., negativity diversity).
Anne I. Weitzel, Christian Unkelbach
wiley   +1 more source

Analytical solution for the stationary model of pollutant propagation in an aquatic medium

open access: yesRevista Ambiente & Água, 2019
This work presents a new analytical approach for solving pollutant dispersion problems along irregular-shaped water bodies. In this approach, the advection-diffusion equation is expressed in terms of orthogonal curvilinear coordinates, defined by the ...
Cíntia Ourique Monticelli   +3 more
doaj   +1 more source

Australia's Three System Approach to Mammographic Image Quality Assessment

open access: yesJournal of Medical Radiation Sciences, EarlyView.
Mammographic image evaluation in Australia remains constrained by the use of fragmented, subjective, and largely unevaluated systems. The continued use of the Perfect (P), Good (G), Moderate (M), Inadequate (I) (PGMI) image evaluation system (IES) framework despite concerns around its validity and reliability reflects a perceived practical utility and ...
Kelly Bentley‐Spuur, Minh T. Chau
wiley   +1 more source

Real-Space Adaptive-Coordinate Electronic Structure Calculations

open access: yes, 1995
We present a real-space adaptive-coordinate method, which combines the advantages of the finite-difference approach with the accuracy and flexibility of the adaptive coordinate method.
Galli, Giulia, Gygi, Francois
core   +1 more source

Home - About - Disclaimer - Privacy