Results 31 to 40 of about 11,014,330 (212)

Food inflation pass‐through from agricultural imports in a small open economy

American Journal of Agricultural Economics, EarlyView.
Abstract This paper develops a new framework for quantifying cost pass‐through in a small open economy by estimating firm‐level markup responses to agricultural import price shocks. We show theoretically that markup adjustments depend on firms' reliance on imported inputs and demand curvature, generating heterogeneous inflationary effects across firm ...
Minseong Kang, Seungki Lee
wiley   +1 more source

A Numerical Solution of Fractional Optimal Control Problems Using Spectral Method and Hybrid Functions [PDF]

Control and Optimization in Applied Mathematics, 2018
In this paper, a modern method is presented to solve a class of fractional optimal control problems (FOCPs) indirectly. First, the necessary optimality conditions for the FOCP are obtained in the form of two fractional differential equations (FDEs). Then,
Seyed Mehdy Shafiof, Javad Askari, Maryam Shams Solary   +2 more
doaj   +1 more source

The use of positive and negative penalty functions in solving constrained optimization problems and partial differential equations [PDF]

, 2009
The Rayleigh-Ritz Method together with the Penalty Function Method is used to investigate the use of different types of penalty parameters. The use of artificial springs as penalty parameters is a very well established procedure to model constraints in ...
Monterrubio Salazar, Luis Emilio
core  

Jahrbuch des S.A.C / 12 Panorama vom Pic d'Arzinol, 3002 m

, 1877
[Raphael] Ritz del. ad nat. ; Lith. F.Lips, BernGetönte LithographieFussleiste, rechts: Jahrbuch d. S.A.C.
Ritz, Raphael
core   +1 more source

Exposure to heat waves and drought improves subsequent leaf heat tolerance for five oak species in southern California

American Journal of Botany, EarlyView.
Abstract Premise Given the threats of climate change, we investigated the impact of high temperatures separately and in combination with reduced soil water on leaf heat tolerance for five oaks (Fagaceae) with overlapping ranges in southern California, USA: Quercus agrifolia and Q. chrysolepis (evergreen species), Q. douglasii and Q.
Casey D. Wisely, G. Olivia Plumb, Mira N. Ranganath, Emily Dolida, Ishan Ashford, Graham Luethe, Tim Thibault, Gretchen B. North   +7 more
wiley   +1 more source

Innovative Application of the Ritz Method to Oil-Gas Seepage Problems: A Novel Variational Approach for Solving Underground Flow Equations

Energies
State-of-the-art commercial simulators (e.g., Eclipse, CMG) predominantly employ finite difference schemes, which face persistent challenges in modeling strongly nonlinear seepage dynamics. This study explores the application of the Ritz method, grounded
Xiongzhi Liu, Hao Yang, Lifei Dong, Ming Lei, Jie Han, Hao Kang   +5 more
doaj   +1 more source

Free vibration analysis of plates and shells by using the Superposition Method [PDF]

, 2010
This thesis is devoted to investigate the capability of the Superposition Method for obtaining the transient response of plates and the natural frequencies of thin doubly curved shallow shells.
Mochida, Yusuke
core  

Paying for Privilege: How Political Contributions Undermine Environmental Sustainability—And How Executive Contracting Can Restore Balance

Business Strategy and the Environment, EarlyView.
ABSTRACT We are interested in investigating whether firms use political donations as a license to neglect environmental sustainability. We further deepen the examination by exploring the role of executive contracting. Drawing on a wide range of data between 2002 and 2021 and a global sample, our findings confirm that firms use political contributions ...
Habiba Al‐Shaer, Ali Uyar, Cemil Kuzey, Abdullah S. Karaman   +3 more
wiley   +1 more source

Influence of Contact Pressure on Performance and Crossover in Zero‐Gap Alkaline Water Electrolysis

Chemie Ingenieur Technik, EarlyView.
Cell performance and product gas quality in zero‐gap alkaline water electrolysis are influenced by the mechanical contact pressure in the electrode area. With a newly developed contact‐pressure cell, it was found that the influence of contact pressure can vary drastically, depending on the cell configuration, electrode type, and diaphragm.
Lukas Ritz, Johanna Güttler, Eugen Hoppe, Martin Müller, Anna K. Mechler, Felix Lohmann‐Richters   +5 more
wiley   +1 more source

Conducting Luxury Research: Methodological Foundations and Standards

Psychology &Marketing, EarlyView.
ABSTRACT The field of luxury research has grown rapidly in recent years, corresponding to the economic importance of the luxury industry. Despite this, the luxury field lacks established methodological foundations for rigorous luxury research. This is particularly problematic as a core tenet of luxury research is that luxury differs from other sectors ...
Jonas Holmqvist, George Christodoulides, Anders Gustafsson, Christian Kowalkowski   +3 more
wiley   +1 more source