نتایج جستجو برای: q bitopological space

تعداد نتایج: 604358  

2013

3D q-space can be viewed as the surface of a 4D hypersphere. In this paper, we seek to develop a 4D hyperspherical interpretation of q-space by projecting it onto a hypersphere and subsequently modeling the q-space signal via 4D hyperspherical harmonics (HSH). Using this orthonormal basis, we analytically derive familiar q-space metrics and introduce a novel hyperspherical diffusivity measure. ...

2005
B. STANKOVIĆ B. Stanković

1. Notation and notions We repeat some definitions and facts, we need in our exposition but for special case. Let Q be an open set belonging to Rn. By D(Q) we denote the space {φ ∈ C∞(Q); suppφ ⊂ Kφ}, Kφ is a compact set in Q which depends on φ. D′(Q) is the space of continuous linear functionals on D(Q) the space of distributions. Every f ∈ Lloc(Q) defines a distribution, called regular distri...

2015
Frederik Möllerström Lauridsen

Using the isomorphism from [3] between the category Pries of Priestley spaces and the category PStone of pairwise Stone spaces we construct a Vietoris hyperspace functor on the category PStone related to the Vietoris hyperspace functor on the category Pries [4, 18, 24]. We show that the coalgebras for this functor determine a semantics for the positive fragment of modal logic. The sole novelty ...

2008
A. Lemke F. Laun B. Stieltjes L. R. Schad

Introduction: One of the current applications is the depiction of pancreatic cancer. Though DWI can be applied here, the full delineation of the tumor remains challenging. Q-space imaging, an alternative diffusion measurement, is currently applied using large diffusion weightings to access non-Gaussian diffusion in the high b-value regime and has so far only been implemented for CNS application...

2013
Philip Bille Patrick Hagge Cording Inge Li Gørtz

We consider the problem of computing the q-gram profile of a string T of size N compressed by a context-free grammar with n production rules. We present an algorithm that runs in O(N ↵) expected time and uses O(n+kT,q) space, where N ↵  qn is the exact number of characters decompressed by the algorithm and kT,q  N ↵ is the number of distinct q-grams in T . This simultaneously matches the curr...

Journal: :Medical image analysis 2013
Ameer Pasha Hosseinbor Moo K. Chung Yu-Chien Wu Andrew L. Alexander Barbara B. Bendlin

3D q-space can be viewed as the surface of a 4D hypersphere. In this paper, we seek to develop a 4D hyperspherical interpretation of q-space by projecting it onto a hypersphere and subsequently modeling the q-space signal via 4D hyperspherical harmonics (HSH). Using this orthonormal basis, we analytically derive several quantitative indices and numerically estimate the diffusion ODF. Importantl...

2001
Liang Guo Ibrahim Matta B. Yener

To provide real-time service or engineer constrained-based paths, networks require the underlying routing algorithm to be able to find low-cost paths that satisfy given quality-of-service constraints. However, the problem of constrained shortest (least-cost) path routing is known to be NP-hard, and some heuristics have been proposed to find a nearoptimal solution. However, these heuristics eith...

1994
F. Rodenas

We wish to report here on a recent approach [1] to the non-commutative calculus on q-Minkowski space which is based on the reflection equations (RE) with no spectral parameter. These are considered as the expression of the invariance (under the coaction of the q-Lorentz group) of the commutation properties which define the different q-Minkowski algebras. This approach also allows us to discuss ...

Journal: :Journal of Quantitative Spectroscopy and Radiative Transfer 2014

Journal: :Annales Academiae Scientiarum Fennicae Mathematica 2017

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