Ultra wideband (UWB) propagation is antenna-dependent, and multipath components experiencing specular diffraction or arriving at different angles have different shapes. To utilise the diversity of the multipath components, this study proposes a statistical model which incorporates directional parameters, such as elevation and azimuth angles by extending the IEEE802.15.3a model. Based on this mo...

We propose a novel space deformation method based on domain-decomposition to animate character skin. The method supports smoothness and local controllability of deformations, and can achieve interactive interpolating rates. Given a character, we partition it into multiple domains according to skinning weights, and attach each to a linear system, without seam artifacts. Examples are presented fo...

Article history: Received: 10.04.2015. Received in revised form: 13.05.2015. Accepted: 29.05.2015. According to the diver motion characteristics, which are low speed and rapid change of direction, a multi-directional motion model is presented. Then the motion model is introduced into an interacting multiple model method, while the timevarying motion model transition probability was corrected ac...

This paper proposes a compression scheme for medical images through differential pulse code modulation coding of multi resolution and multidirectional subbands. Multi resolution representation of the medical images are obtained through laplacian pyramid which successfully decorrelates the image and thus reduces the redundant information by representing the image by a coarse signal at a lower re...

In this paper, we perform a comparative evaluation of characteristics multi-hop transmission of typical omni-directional MAC protocol IEEE 802.11 DCF and three directional MAC protocols. We consider the validity of the directional MAC protocols and problems. Additionally, we describe the suitable environment when a directional MAC protocol is used. Furthermore, we propose three schemes as deali...

This paper presents the viewing angle improvement of integral imaging (II) three-dimensional (3D) display system using horizontal and vertical multi-directional projections and elemental image (EI) rearranging method with pepper and salt noise reduction. Through this way, each elemental lens of micro lens array gathers horizontal and vertical multi-directional illuminations of multiple EI sets ...

This paper describes a new method of multimedia information retrieval which shows multimedia information on a screen in a multi-directional way, using perspective, during the process of recursive interactive retrieval. This method supports a graphical, sensitive and individually tailored interaction between a user and multimedia data. The original work here in is the support of interaction betw...

in present study, thermo-elastic buckling analysis of multi-layer orthotropic annular/circular graphene sheets is investigated based on eringen’s theory. the moderately thick and also thick nano-plates are considered. using the non-local first and third order shear deformation theories, the governing equations are derived. the van der waals interaction between the layers is simulated for multi-...