نتایج جستجو برای: roto
تعداد نتایج: 273 فیلتر نتایج به سال:
SLAM (Simultaneous Localization And Mapping) plays an essential and important role for mobile robotic autonomous navigation. SLAM in dynamic environments with moving objects is a challenging problem. We focus on scan matching for Graph-SLAM in indoor dynamic scenarios. Scan matching algorithm is proposed and implemented, which consists of the following phases: first, conditioned Hough Transform...
A patient with ruptured type IV thoracoabdominal aortic aneurysm (TAAA), underwent surgical treatment utilizing visceral perfusion assisted by a centrifugal pump and neonatal membrane oxygenator. This circuit allows visceral perfusion with oxygenated blood during the ischemic period and the fast infusion of intravenous volume after clamp removal. Descriptors: Aortic aneurysm, thoracic, surgery....
We propose a method for computation of the Hessian of axially symmetric functions on the roto-translation group SE(3). Eigendecomposition of the resulting Hessian is then used for curvature estimation of tubular structures, similar to how the Hessian matrix of 2D or 3D image data can be used for orientation estimation. This paper focuses on a new implementation of a Gaussian regularized Hessian...
Symmetry is a powerful framework to perceive and predict the physical world. The structure of materials is described by a combination of rotations, rotation-inversions and translational symmetries. By recognizing the reversal of static structural rotations between clockwise and counterclockwise directions as a distinct symmetry operation, here we show that there are many more structural symmetr...
The title three-dimensional coordination network, {[Nd(C(4)H(4)N(2)O(2))(4)](ClO(4))(3)}(n), is isostructural to that of other lanthanides. The Nd(+3 )cation lies on a fourfold roto-inversion axis. It is coordinated in a distorted square-anti-prismatic fashion by eight O atoms from bridging pyrazine N,N'-dioxide ligands. There are two unique pyrazine N,N'-dioxide ligands. One ring is located ar...
The title three-dimensional coordination network, {[Ho(C(4)H(4)N(2)O(2))(4)](ClO(4))(3)}(n), is isostructural to that of other lanthanides. The Ho(+3 )cation lies on a fourfold roto-inversion axis. It is coordinated in a distorted square anti-prismatic fashion by eight O atoms from bridging pyrazine N,N'-dioxide ligands. There are two unique pyrazine N,N'-dioxide ligands. One ring is located ar...
A vitrectomy specimen obtained with the roto-extractor from a diabetic patient with vitreous haemorrhage revealed fungal endophthalmitis on microscopical examination. Endophthalmitis was not suspected before the procedure. Extensive medical examinations failed to reveal any evidence of systemic fungal disease. The case exemplifies endogenous mycotic endophthalmitis of occult origin, the first o...
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