Results 21 to 30 of about 4,186,989 (310)

On the unit sphere of positive operators [PDF]

open access: yesBanach Journal of Mathematical Analysis, 2017
Given a C$^*$-algebra $A$, let $S(A^+)$ denote the set of those positive elements in the unit sphere of $A$. Let $H_1$, $H_2,$ $H_3$ and $H_4$ be complex Hilbert spaces, where $H_3$ and $H_4$ are infinite-dimensional and separable.
A. M. Peralta
semanticscholar   +1 more source

Homogeneous solutions of stationary Navier-Stokes equations with isolated singularities on the unit sphere. II. Classification of axisymmetric no-swirl solutions [PDF]

open access: yes, 2017
We classify all (-1)-homogeneous axisymmetric no-swirl solutions of incompressible stationary Navier-Stokes equations in three dimension which are smooth on the unit sphere minus the south and north poles, parameterizing them as a four dimensional ...
Li Li, Yanyan Li, Xukai Yan
semanticscholar   +1 more source

Characterizing small spheres in a unit sphere by Fischer–Marsden equation

open access: yesJournal of Inequalities and Applications, 2022
We use a nontrivial concircular vector field u on the unit sphere S n + 1 $\mathbf{S}^{n+1}$ in studying geometry of its hypersurfaces. An orientable hypersurface M of the unit sphere S n + 1 $\mathbf{S}^{n+1}$ naturally inherits a vector field v and a ...
Nasser Bin Turki   +2 more
doaj   +1 more source

Positive definite functions on the unit sphere and integrals of Jacobi polynomials [PDF]

open access: yes, 2017
It is shown that the integrals of the Jacobi polynomials \begin{equation*}%\label{eq:Fn^J} \int_0^t (t-\theta)^\delta P_n^{(\alpha-\frac12,\beta-\frac12)}(\cos \theta) \left(\sin \tfrac{\theta}2\right)^{2 \alpha} \left(\cos \tfrac{\theta}2\right)^{2 ...
Yuan Xu
semanticscholar   +1 more source

3D CHANGE DETECTION FOR SEMI-AUTOMATIC UPDATE OF BUILDINGS IN 3D CITY MODELS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Automatic update of 3D city models has become a crucial operation in the context of urban digital twins. It commonly relies on a reconstruction from ALS point clouds.
A. Tamort   +3 more
doaj   +1 more source

Which strategies support the effective use of clinical practice guidelines and clinical quality registry data to inform health service delivery? A systematic review

open access: yesSystematic Reviews, 2022
Background Empirical evidence suggests data and insights from the clinical practice guidelines and clinical quality registries are not being fully utilised, leaving health service managers, clinicians and providers without clear guidance on how best to ...
Kathy Dempsey   +6 more
doaj   +1 more source

Determinants of participation and quality of life of young adults with cerebral palsy: longitudinal approach and comparison with the general population – SPARCLE 3 study protocol

open access: yesBMC Neurology, 2021
Background Effective inclusion in society for young people with disabilities is increasingly seen as generating opportunities for self-development, and improving well-being.
Catherine Arnaud   +11 more
doaj   +1 more source

Motion-Sphere: Visual Representation of the Subtle Motion of Human Joints

open access: yesApplied Sciences, 2020
Understanding and differentiating subtle human motion over time as sequential data is challenging. We propose Motion-sphere, which is a novel trajectory-based visualization technique, to represent human motion on a unit sphere. Motion-sphere adopts a two-
Adithya Balasubramanyam   +4 more
doaj   +1 more source

Developing a climate change inequality health impact assessment for health services

open access: yesPublic Health Research & Practice, 2023
Objectives: To develop a Climate Change Inequality Health Impact Assessment (CCIHIA) framework for health services; to provide a systematic process for assessing potential unequal health impacts of climate change on vulnerable and marginalised ...
Fiona Haigh   +6 more
doaj   +1 more source

Two-Qubit Bloch Sphere

open access: yesPhysics, 2020
Three unit spheres were used to represent the two-qubit pure states. The three spheres are named the base sphere, entanglement sphere, and fiber sphere.
Chu-Ryang Wie
doaj   +1 more source

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