although university efl students represent a wide array of social and cultural identities, their multiple and diverse identities are not usually considered in foreign language classrooms. this qualitative case study attempted to examine identity conflicts experienced by iranian efl learners at the university context. to this end, two shiraz university students' identities were investigated. sem...

Although university EFL students represent a wide array of social and cultural identities, their multiple and diverse identities are not usually considered in foreign language classrooms. This qualitative case study attempted to examine identity conflicts experienced by Iranian EFL learners at the university context. To this end, two Shiraz University students' identities were investigated. Sem...

A remarkable multiple analogue of the Stirling numbers of the first and second kind was recently constructed by the author. Certain summation identities, and related properties of this family of multiple special numbers are investigated in the present paper.

An overview is given of effective gravitational field theories with fixed background fields that break spacetime symmetry. The behavior of the background fields and the types of excitations that can occur depend on whether the symmetry breaking is explicit or spontaneous. For example, when the breaking is spontaneous, the background field is dynamical and massless Nambu–Goldstone and massive Hi...

Sybil attacks pose a serious threat for Wireless Sensor Networks (WSN) security. They can create problems in routing, voting schemes, decision making, distributed storage and sensor re-programming. In a Sybil attack, the attacker masquerades as multiple sensor identities that are actually controlled by one or a few existing attacker nodes. Sybil identities are fabricated out of stolen keys, obt...