Zirconia-nickel functionally graded materials were obtained by powder metallurgy technique. The microstructure, residual stress, fracture toughness and Vickers hardness were investigated. Mixed-mode fracture response of YSZ /Ni functionally graded materials was examined utilizing the three point bending test and finite element method (Cosmos/M 2.7). The results show that the stress intensity fac...

A new approach for estimating 3D head pose form a monocular image is proposed. Our approach employs general prior knowledge of face structure and the corresponding geometrical constraints provided by the location of vanishing point to determine pose of human faces. Eye-lines and mouth-line are assumed parallel in 3D space, and the vanishing point formed by the intersection of the eyeline and mo...

In regularized 4-dimensional Einstein-Gauss-Bonnet (EGB) gravity derived from a Kaluza-Klein reduction of higher-dimensional EGB theory, we study the existence and stability black hole (BH) solutions on static spherically symmetric background. We show that asymptotically-flat hairy BH realized for spatially-flat maximally internal space are unstable against linear perturbations any rescaled GB ...

A man-made environment is characterized by many parallel lines and orthogonal edges. In this article, a new method for detecting the three mutually orthogonal directions of such an environment is presented. Since real-time performance is not necessary for architectural applications, such as building reconstruction, a computationally intensive approach was chosen. However, this enables us to avo...

This paper deals with road detection in an outdoor environment. By comparison with preceding approaches, which use various sensors, our system uses only a monocular camera. In this paper, we propose a novel approach a fusion of frequency based vanishing point estimation and probabilistically based color segmentation.

A method for the fronto-parallel recovery of paragraphs of text under full perspective transformation is presented. The horizontal vanishing point of the text plane is found using an extension of 2D projection profiles. This allows the accurate segmentation of the lines of text. Analysis of the lines will then reveal the style of justification of the paragraph, and provide an estimate of the ve...

We consider possible perturbations of the black hole event horizon induced by matter with spin, extending derivation Hawking-Hartle formula (tidal heating) in presence torsion. When specialised to theories a non-vanishing (pseudo-)traceless component (con)torsion tensor, we remarkably find that tidal heating phenomenon gets modified additional torsion-dependent terms, agreement previous investi...

Upcoming large-scale-structure surveys can shed new light on the properties of dark energy. In particular, if energy is a dynamical component, it must have spatial perturbations. Their behaviour regulated by speed sound parameter, which currently unconstrained. this work we present numerical methods that will allow to perform cosmological simulations inhomogeneous scenarios where small and non-...

Introduction: To investigate the effects of predictable and unpredictable external perturbations on cortical activity in healthy young and older adults. Methods: Twenty healthy older and 19 healthy young adults were exposed to predictable and unpredictable external perturbations, and their cortical activity upon postural recovery was measured using a 32-channel quantitative encephalography. Th...

In recent work, Hollands, Kov\'acs and Reall have built on previous work of Wall to provide a definition dynamical black hole entropy for gravitational effective field theories (EFTs). This satisfies second law mechanics quadratic order in perturbations around stationary hole. We determine the explicit form this EFT 4d vacuum gravity including terms action with up 6 derivatives. An open questio...