In reverberant rooms with multiple-people talking, spatial separation between speech sources improves recognition of attended speech, even though both the head-shadowing and interaural-interaction unmasking cues are limited by numerous reflections. It is the perceptual integration between the direct wave and its reflections that bridges the direct-reflection temporal gaps and results in the spa...

This research investigated the high school EFL teachers’ continuous professional development target needs, reflection and challenges. Further, needs of teachers were analyzed by adapting Hutchinson Waters’ model (1987). The data collected using a test, questionnaire (consisted five parts), interview; these administered to 20 teachers. A test was identify teachers' present situation difficulties...

In active sonar the target echo level is often estimated with a propagation model that adds all multipath arrivals. If the (post-correlator) transmitted pulse is short compared to the multipath time spread then there is effectively an extra loss (which may be substantial) since only a few of the paths contribute to the target echo at any one instant. This well known "time-smearing" loss is trea...

This work aims to know the perception of future mathematics teachers about complexity mathematical objects and their possible application in teaching practice, order improve learning Basic General Education (GBS) Unified Baccalaureate (BGU). For this, 19 professors were asked different meanings some objects, they proposed raise contextualized problems which a certain meaning had be applied reso...

A framework for photo-realistic view-dependent image synthesis of a shiny object from a sparse set of images and a geometric model is proposed. Each image is aligned with the 3D model and decomposed into two images with regards to the reflectance components based on the intensity variation of object surface points. The view-independent surface reflection (diffuse reflection) is stored as one te...

An algorithm to estimate reflection coefficient properties of materials based on code multipath errors is developed and tested in two urban environments. The algorithm extends an existing model that integrates 3D structure models, electromagnetic ray-tracing algorithms, antenna pattern measurements, and receiver tracking loop models to simulate code multipath errors. Instead of using the Fresne...

Traditionally, the Marchenko equation forms a basis for 1D inverse scattering problems. A 3D extension of the Marchenko equation enables the retrieval of the Green’s response to a virtual source in the subsurface from reflection measurements at the earth’s surface. This constitutes an important step beyond seismic interferometry. Whereas seismic interferometry requires a receiver at the positio...