Results 161 to 170 of about 346,028 (290)

A Geometric Characterization of Steady Laminar Flow

Communications on Pure and Applied Mathematics, EarlyView.
ABSTRACT We study the steady states of the Euler equations on the periodic channel or annulus. We show that if these flows are laminar (layered by closed non‐contractible streamlines which foliate the domain), then they must be either parallel or circular flows.
Theodore D. Drivas, Marc Nualart
wiley   +1 more source

Enhanced Taylor-Aris dispersion in slender pulsatile annular channels: Implications for perivascular solute transport. [PDF]

J Fluid Mech
Sarkar D, Mukherjee S.
europepmc   +1 more source

Compact Manifolds With Unbounded Nilpotent Fundamental Groups and Positive Ricci Curvature

Communications on Pure and Applied Mathematics, EarlyView.
ABSTRACT It follows from the work of Kapovitch and Wilking that a closed manifold with nonnegative Ricci curvature has a uniformly almost nilpotent fundamental group. Leftover questions and conjectures, have asked if in this context the fundamental group is actually uniformly almost abelian. The main goal of this work is to construct examples (Mk9,gk)$(
Elia Bruè, Aaron Naber, Daniele Semola
wiley   +1 more source

Statistics of the Compression Ratio of a Variable-to-Variable Code: Exact Moments and Asymptotic Behavior. [PDF]

Entropy (Basel)
Merhav N.
europepmc   +1 more source

Efficiency and Perceptions in Public CSR: An Integrated Efficiency–Perception Analysis of Spanish Defence Delegations

Corporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT Public organisations often experience a discrepancy between improvements in technical efficiency and stakeholders' perceptions of integrity and performance. This study analyses the mechanisms that may underlie this efficiency–perception discrepancy in Spanish Defence Delegations during 2020–2023.
José Solana‐Ibáñez, Manuel Caravaca‐Garratón   +1 more
wiley   +1 more source

Holographic is Hamiltonian, relatively. [PDF]

Lett Math Phys
Chruściel PT, Wutte R.
europepmc   +1 more source

Adapting to Water Scarcity in Mediterranean Greenhouse Agriculture: Insights From Digital Irrigation and Regulated Water Governance in Southeastern Spain

Corporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT Climate‐driven water scarcity is compounding adaptation pressures on Mediterranean greenhouse farming, particularly for small and micro agricultural firms governed by regulated water‐governance systems. This paper analyses differentiated adaptation profiles in Almería (Spain) based on an analysis of farm structure, digital irrigation adoption,
Luis J. Belmonte‐Ureña, Francisco Camacho‐Ferre, Francisco José Castillo‐Díaz   +2 more
wiley   +1 more source

Secrecy Performance of O-RAN-Enabled RIS-Assisted FSO/RF Satellite Downlinks. [PDF]

Entropy (Basel)
Li Y, Chen X, Shi J, Lv G, Jin Y.
europepmc   +1 more source

Corporate Social Responsibility and Firm Profitability in South Africa: An Industry‐Level Analysis

Corporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT This study examines the relationship between corporate social responsibility and profit on assets in South Africa using a panel dataset comprising 79 industries observed annually between 2017 and 2024. The study uses an industry‐level dataset which, unlike firm‐level inquiries, purges firm‐level noise and acknowledges the empirical regularity ...
Brian Tavonga Mazorodze
wiley   +1 more source

The Impact of BOLD-Induced Linewidth Modulation on Functional ¹H MRS Analysis. [PDF]

NMR Biomed
Wilson M, Finney SM, Clarke WT.
europepmc   +1 more source