Results 31 to 40 of about 817,701 (334)

A NOTE ON SUB-BUNDLES OF VECTOR BUNDLES [PDF]

open access: yesGlasgow Mathematical Journal, 2006
4 pages, various ...
Bernt Tore Jensen   +1 more
openaire   +3 more sources

Quantifying synergistic effects of multi-temporal ecosystem service bundles for degraded ecosystem restoration: a case study in Hubei Province, China

open access: yesEnvironmental Research Letters, 2023
Ecological restoration is vital for combating ecosystem degradation and enhancing ecosystem services. However, conventional approaches typically tend to focus on a single ecosystem service at a particular time, resulting in a limited understanding of the
Wenping Liu, Peimeng Yu
doaj   +1 more source

Stable Higgs bundles over positive principal elliptic fibrations

open access: yes, 2018
Let $M$ be a compact complex manifold of dimension at least three and $\Pi : M\rightarrow X$ a positive principal elliptic fibration, where $X$ is a compact K\"ahler orbifold. Fix a preferred Hermitian metric on $M$.
Biswas, Indranil   +2 more
core   +1 more source

Cracks in random brittle solids: From fiber bundles to continuum mechanics [PDF]

open access: yes, 2014
Statistical models are essential to get a better understanding of the role of disorder in brittle disordered solids. Fiber bundle models play a special role as a paradigm, with a very good balance of simplicity and non-trivial effects.
Hansen, Alex   +3 more
core   +4 more sources

Differential geometry of collective models

open access: yesAIMS Mathematics, 2019
The classical astrophysical theory of Riemann ellipsoids and the quantum nuclear theory of Bohr and Mottelson share a common mathematical foundation in terms of the differential geometry of a principal bundle ${\cal P}$ and its associated vector bundle E,
George Rosensteel
doaj   +1 more source

Annular bundles [PDF]

open access: yesPacific Journal of Mathematics, 1988
The author defines a particular kind of complex manifold with non-trivial topology, called annular bundle, which is essentially a holomorphic fiber bundle with fibers biholomorphic to plane annuli. It is possible to associate in a natural manner two invariants to an annular bundle - a function and a real (1,1)-form defined on the base of the bundle ...
openaire   +3 more sources

Bundling and Competition for Slots: On the Portfolio Effects of Bundling [PDF]

open access: yesSSRN Electronic Journal, 2009
We consider competition among sellers when each of them sells a portfolio of distinct products to a buyer having limited slots. We study how bundling affects competition for slots. Under independent pricing, equilibrium often does not exist and hence the outcome is often inefficient.
Jeon, Doh-Shin, Menicucci, Domenico
openaire   +8 more sources

Trade-Offs, Synergies, and Driving Factors of Ecosystem Services in the Urban–Rural Fringe of Beijing at Multiple Scales

open access: yesLand
Urban–rural fringe areas are critical transition zones where ecological functions and human activities interact intensely, often leading to complex spatial patterns and trade-offs among ecosystem services (ESs).
Chang Wang   +6 more
doaj   +1 more source

Sepsis: implication for nursing

open access: yesItalian Journal of Medicine, 2016
Sepsis is a serious health problem that is off worldwide interest; it is associated with a high mortality rate despite continuing improvements in infection management and the awareness of population is still poor despite its importance.
Fabio Bertoncini   +2 more
doaj   +1 more source

A Simplified Double-Bundle Anterior Cruciate Ligament Reconstruction by the Three-Inside Technique With Two Suspension Buttons and One Interference Screw

open access: yesArthroscopy Techniques, 2022
In comparison with the single-bundle technique, double-bundle anterior cruciate ligament (ACL) reconstruction has proven its superiority regarding biomechanical studies and clinical outcomes in both rotational knee stability and anterior translation ...
Cong Dung Truong, M.D.   +7 more
doaj   +1 more source

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