In this paper, a new formulation based on Artificial Neural Networks (ANN) is presented for backcalculation of pavement layer moduli. In structural analysis of flexible pavements, the procedures as Layered Elastic Theory, Equivalent Layer Thickness (ELT), and Finite Elements Method (FEM) generally have complex formulations and give approximate results. Therefore, it is extremely difficult to pe...

ai = time aircraft i lands after the preferred landing time Pi (i 1; . . . ; N) bi = time aircraft i lands before the preferred landing time Pi (i 1; . . . ; N) C = cost coefficient vector defined in the linear programming problem Ei = earliest landing time for aircraft i (i 1; . . . ; N) fi = penalty cost per unit of time if aircraft i lands before the preferred landing time Pi (i 1; . . . ; N...

Determining the absolute chronology of ceramic artifacts has significant implications for archeological and historical research. Wilson, Hall et al. recently suggested a new technique for direct absolute dating of archeological ceramics based on a moisture-induced chemical reaction, called rehydroxylation (RHX) dating. RHX dating proceeds by measuring the mass of chemically combined water in th...

This article argues that the teaching of English as an international language (EIL) should be based on an entirely different set of assumptions than has typically informed English language teaching (ELT) pedagogy. To begin, several defining features of an international language are described. Because these features have altered the nature of English itself, the author maintains that the pedagog...

During the Covid19 pandemic, online learning platforms are solutions to sustain English Language Teaching (ELT). It is an appropriate option for lecturers deliver course materials amidst covid19 outbreak. Some of most frequently used Zoom and WhatsApp. The purpose this study describe EFL university students’ perceptions use WhatsApp in ELT. A virtual class form was created enable students remot...

background: single leg drop landing is one of the common sport activities that have greater likelihood of leading to traumatic oflower extremity. however, there is limited understanding of biomechanics of this maneuver. hence, this study aimed to compare the activities of lower limb muscles during pre- and post phases of single leg drop landing. methods: this semi-experimental research of 13 ph...