investigating the discursive construction of efl learners’ motivation is a relatively new area of inquiry. hence, there is a dearth of research into how foreign language learners’ discourse mediates their motivation construction. this study attempted to examine the discursive construction of two (one male and one female) iranian efl learners’ motivation in shiraz university, iran by examining t...

despite its numerous potential applications, two-dimensional monolayer graphyne, a novel form of carbon allotropes with sp and sp2 carbon atoms, has received little attention so far, perhaps as a result of its unknown properties. especially, determination of the exact values of its elastic properties can pave the way for future studies on this nanostructure. hence, this article describes a dens...

In this chapter, we introduce a unjfied rugh-dimensional geometric framework for analyzing the phase transition phenomenon of (1 minimization in compressive sensing. This framework connects srudying the phase transitions of ( 1 minimization with computing the Grassmann angles in high-dimensional convex geometry. We demonstrate the broad applications of this Grassmann angle framework by giving s...

Penalized M-estimators are used in many areas of science and engineering to fit models with some low-dimensional structure in high-dimensional settings. In many problems arising in machine learning, signal processing, and high-dimensional statistics, the penalties are geometrically decomposable, i.e. can be expressed as a sum of support functions. We generalize the notion of irrepresentability ...

The paper deals with multi-dimensional cutting and packing and metaheuristic algorithms. A brief overview of this area is presented, and the general Tabu Search framework of Lodi, Martello and Vigo [LMV99a] is considered in detail. Computational results on multi-dimensional bin packing problems are reported, and possible methods for extending the framework to other packing problems are finally ...

In this paper we introduce a general framework for compaction on a torus. This problem comes up whenever an array of identical cells has to be compacted. We instantiate our framework with several specific compaction algorithms: one-dimensional compaction without and with automatic jog insertion and two-dimensional com-

Content-based management of three-dimensional data in the framework of the MPEG-7 standard is considered. An overview on MPEG-7 and three-dimensional data is presented. Descriptors and description schemes suitable for three-dimensional data are introduced and their integration in the framework of MPEG-7 is detailed. The shape descriptors are based on cords, wavelet transform and three-dimension...