Results 41 to 50 of about 2,034,699 (144)

Invariant classification and the generalised invariant formalism: conformally flat pure radiation metrics, with zero cosmological constant

, 2010
Metrics obtained by integrating within the generalised invariant formalism are structured around their intrinsic coordinates, and this considerably simplifies their invariant classification and symmetry analysis. We illustrate this by presenting a simple
A. Barnes, A. Held, A. Held, A. Karlhede, A. Karlhede, A. Koutras, A. Koutras, A. Koutras, C.H. Brans, D. Pollney, E. Cartan, E. Newman, G. Ludwig, G. Ludwig, G.O. Papadopoulos, H. Stephani, I. Ozsváth, J. Collins, J. Collins, J. Collins, J. Podolský, J. Podolský, J.E.F. Skea, M. P. Machado Ramos, M.A.H. MacCallum, M.P. Machado Ramos, M.P. Machado Ramos, M.P. Machado Ramos, M.P. Machado Ramos, M.P. Machado Ramos, Michael Bradley, P. Wils, R. Geroch, R. Milson, S. Brian Edgar, S.B. Edgar, S.B. Edgar, S.B. Edgar, S.B. Edgar, S.B. Edgar, S.B. Edgar, S.B. Edgar, S.B. Edgar, W. Kundt, W. Kundt   +44 more
core   +1 more source

A Distributional Cost‐of‐Living Index From Aggregate Data

Review of Income and Wealth, Volume 71, Issue 4, November 2025.
ABSTRACT This article proposes a method to measure individual and aggregate changes in the cost of living when consumer behavior is nonhomothetic and microdata on consumption expenditures are not available. Aggregate prices and expenditure shares together with a single cross‐sectional expenditure distribution are sufficient to create a distribution of ...
Philipp Hochmuth, Markus Pettersson, Christoffer Jessen Weissert   +2 more
wiley   +1 more source

Approximate Noether Symmetries and Collineations for Regular Perturbative Lagrangians

, 2017
Regular perturbative Lagrangians that admit approximate Noether symmetries and approximate conservation laws are studied. Specifically, we investigate the connection between approximate Noether symmetries and collineations of the underlying manifold.
Jamal, Sameerah, Paliathanasis, Andronikos   +1 more
core   +1 more source

The Emission-Reduction Effect of Green Demand Preference in Carbon Market and Macro-Environmental Policy: A DSGE Approach

Sustainability
Along with the new stage of prevention and control of the COVID-19 pandemic and the vision and goals of combatting climate change, the challenges of the transition to a green economy have become more severe.
Xuyi Ding, Guang-yu Ma, Jianhua Cao
semanticscholar   +1 more source

Globalisation, Financialisation and Endogenous Thresholds for Premature Deindustrialisation

International Journal of Finance &Economics, Volume 30, Issue 4, Page 3411-3430, October 2025.
ABSTRACT We investigate the pattern and determinants of premature deindustrialisation (PD) for a large panel of advanced, emerging and developing economies. We consider the impacts of international financial integration (de facto financial globalisation), capital account openness (de jure financial globalisation) and financialisation which are often ...
Seda Ekmen Özçelik, Erdal Özmen, Fatma Taşdemir   +2 more
wiley   +1 more source

A model of theft and bribery

Economica, Volume 92, Issue 368, Page 1247-1271, October 2025.
Abstract Two of the most pervasive kinds of public corruption are theft and bribery. I show how a simple common agency model can simultaneously depict both. In one setting, a public official (agent) who has discretion over government revenues can steal some of it and allocate the rest to public spending towards various sectors (principals), some of ...
Desiree A. Desierto
wiley   +1 more source

An Economic Model of the French Revolution

Journal of Public Economic Theory, Volume 27, Issue 5, October 2025.
ABSTRACT We offer a new economic perspective on the French Revolution by analyzing how an elite commitment problem and trade policy shaped revolutionary dynamics. We develop a complete‐information game‐theoretic model in which revolution can occur on the equilibrium path.
Kishore Gawande, Ben Zissimos
wiley   +1 more source

Synergies and trade‐offs between ecosystem services and economics in dryland cover crop systems

Ecosphere, Volume 16, Issue 9, September 2025.
Abstract Replacing bare fallow periods with cover crops in dryland agroecosystems can help reverse soil degradation and control erosion but may also result in cash crop yield penalties due to water limitations. Two field trials were conducted on the Colorado Plateau to quantify the impact of cover cropping on crop production, multiple ecosystem ...
Lisa Eash, Kathleen Russell, Abdel F. Berrada, Meagan E. Schipanski, Pankaj Trivedi, Daniel Mooney, Jenny Beiermann, Joe Brummer, Steven J. Fonte   +8 more
wiley   +1 more source

Preference changes and index number theory

Journal of Economic Surveys, Volume 39, Issue 4, Page 1361-1394, September 2025.
Abstract The economic approach to the cost of living index assumes that consumer preferences remain constant over time. This assumption poses little risk in calculating a short‐run intertemporal bilateral price index. The assumption, however, breaks down in the case of a fixed‐based time series index spanning a long period and in the context of ...
Thu Huyen Le, Kam Yu
wiley   +1 more source

Multi-frame pyramid correlation for time-resolved PIV

, 2012
A novel technique is introduced to increase the precision and robustness of time-resolved particle image velocimetry (TR-PIV) measurements. The innovative element of the technique is the linear combination of the correlation signal computed at different ...
A. Sciacchitano, F. Scarano, B. Wieneke
semanticscholar   +1 more source