Results 151 to 160 of about 1,019,090 (317)
Metrics with homogeneous geodesics on flag manifolds [PDF]
, 2002 summary:A geodesic of a homogeneous Riemannian manifold $(M=G/K, g)$ is called homogeneous if it is an orbit of an one-parameter subgroup of $G$. In the case when $M=G/H$ is a naturally reductive space, that is the $G$-invariant metric $g$ is defined by ...
Alekseevsky, Dmitri +1 more
core
International Journal of Adaptive Control and Signal Processing, EarlyView.This article proposes a convergent adaptive observer for a damped wave PDE and an infinite‐dimensional ODE coupled in cascade using sampled‐in‐space ODE state measurements. The proposed observer estimates the distributed states of the PDE and ODE along with unknown PDE parameters and spatial input.
Zehor Belkhatir +2 more
wiley +1 more source
Journal of Combinatorial Theory, Series A, 1991 ZusammenfassungIn the spirit of Klein's Erlangen Program we classify in this paper n-ary multiplications having an n-transitive or an n-homogeneous group of automorphisms. On the one hand, for n ⩾ 4, on finite sets the number of distinct n-ary multiplications admitting the symmetric or alternating group as automorphism group is strongly related with ...
openaire +1 more source
Moments of exit times from wedges for non-homogeneous random walks with asymptotically zero drifts
, 2013 We study quantitative asymptotics of planar random walks that are spatially non-homogeneous but whose mean drifts have some regularity. Specifically, we study the first exit time $\tau_\alpha$ from a wedge with apex at the origin and interior half-angle $
MacPhee, I.M. +4 more
core +1 more source
Advanced Engineering Materials, Volume 27, Issue 6, March 2025.ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur +5 more
wiley +1 more source
Laser Powder Bed Fusion of Alumina: Effects of Scanning Strategies on External and Internal Defects
Advanced Engineering Materials, EarlyView.This study investigates how scanning strategies affect pure alumina in laser powder bed fusion. Linear 45° scanning yields uniform surfaces but high porosity, while the island‐concentric strategy provides higher density with through‐holes favorable for infiltration. Findings highlight pathways toward optimizing defect‐free alumina parts.
Mohamed Abdelmoula +7 more
wiley +1 more source
NUMERICAL CALCULATION OF THE STEAM CONDENSING FLOW
TASK Quarterly, 2001 Considering the flow in the last stages of LP (low pressure) steam turbine the strong non-linearity of the thermal parameters of state and possibility of the two-phase flow have to be taken into account in the numerical calculation of the flow field. In
SŁAWOMIR DYKAS
doaj
Homogeneous immunoassays [PDF]
Applied Biochemistry and Biotechnology, 1982 R C, Boguslaski, T M, Li
openaire +2 more sources
Advanced Engineering Materials, EarlyView.Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley +1 more source
Emulsion Catalysis: Interface between Homogeneous and Heterogeneous Catalysis
, 2013 Emulsion Catalysis: Interface between Homogeneous and Heterogeneous ...
郭文岗 +4 more
core