Results 71 to 80 of about 4,762 (252)
Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose To improve the accuracy of diffusion‐weighted powder average signals for diffusion encoding with arbitrary b‐tensors. Methods We identify an intrinsic dihedral (D2$$ {D}_2 $$) symmetry of diffusion signals for arbitrary diffusion encoding, which defines their natural signal space (a quotient of 3D rotations).
Sune Nørhøj Jespersen +1 more
wiley +1 more source
Oikos, EarlyView.Climatic conditions shape phenotypic evolution by driving adaptations that optimise organismal function. Invasive species provide valuable systems to study these processes, as they often encounter novel climatic conditions in their introduced ranges. The European rabbit Oryctolagus cuniculus, native to the Iberian Peninsula, has established populations
Rishab Pillai +11 more
wiley +1 more source
Timelike surfaces with Bertrand geodesic curves in Minkowski 3–space
AIP AdvancesGeodesic curves on a surface play an essential role in reasonable implementation. A curve on a surface is a geodesic curve if its principal normal vector is aligned with the surface normal. Using the Serret–Frenet frame, the timelike (TL) surfaces can be
A. A. Almoneef, R. A. Abdel-Baky
doaj +1 more source
On Momentum Operators Given by Killing Vectors Whose Integral Curves Are Geodesics
Physics, 2022 The paper considers momentum operators on intrinsically curved manifolds. Given that momentum operators are Killing vector fields whose integral curves are geodesics, the corresponding manifold is flat or of the compact type with positive constant sectional curvature and dimensions equal to 1, 3, or 7. Explicit representations of momentum operators and
openaire +3 more sources
Sliding Mode Control in Aerospace Applications: A Survey
International Journal of Robust and Nonlinear Control, EarlyView.ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
wiley +1 more source
Wildlife Society Bulletin, EarlyView.We developed a web GIS system that delivers geospatial data for Wyoming and the Greater Yellowstone Ecosystem (GYE) using cloud‐optimized formats and open‐source tools to support regional ecological research and management. Using pronghorn as an example, we combined observed locations with environmental covariates from our geospatial library to map ...
Jessie S. Shapiro +5 more
wiley +1 more source
Is the rent too high? Land ownership and monopoly power
Real Estate Economics, EarlyView.Abstract Pricing power in real estate markets can reduce housing supply and redevelopment relative to the social optimum. We show how pricing power interacts with popular redevelopment subsidies and zoning regulations. Using building‐level rental income data from NYC, we find that increased concentration is correlated with increased rents.
C. Luke Watson, Oren Ziv
wiley +1 more source
Archaeometry, EarlyView.ABSTRACT The discovery of archaeological sites traditionally entails the utilisation of physically demanding exploration methodologies, including terrain surveying and the analysis of historical records. Recent technological developments have led to an increased use of non‐invasive remote sensing techniques, including Google Earth, LiDAR and aerial ...
Mncedisi J. Siteleki
wiley +1 more source
Characterization of Isoclinic, Transversally Geodesic and Grassmannizable Webs
AxiomsOne of the most relevant topics in web theory is linearization. A particular class of linearizable webs is the Grassmannizable web. Akivis gave a characterization of such a web, showing that Grassmannizable webs are equivalent to isoclinic and ...
Jihad Saab, Rafik Absi
doaj +1 more source