|We consider a dual rate synchronous DS/CDMA system in which the length of each signature sequence is inversely proportional to the corresponding data rate. Two types of decorrelators that employ the diierence in processing gains have been proposed: a high-rate decorrelator (HRD) matched to the data rate of the high-rate users, and a low-rate decorrelator (LRD) matched to the data rate of the l...

Nader and Simin—A Separation is the first Iranian movie which won manyinternational awards as well as admiration from critics and the public. Many reviewsby critics, however, have revolved around problems in spousal relationships ofcouples in different social classes of Iran. Through highlighting the self-evidentdismantling elements and unreliable readings in the acting, directing, and even the...

Whenever a multiagent system is designed, many dependencies in the system are identified and must be solved in a correct way. Coordination deals with the management of such dependencies. For that, two complementary viewpoints can be distinguished: subjective coordination manages intra-agent aspects while objective coordination essentially deals with inter-agent aspects. On the basis of this sep...

Several generalizations of the Hahn–Banach extension theorem to K-convex multifunctions were stated recently in the literature. In this note we provide an easy direct proof for the multifunction version of the Hahn–Banach–Kantorovich theorem and show that in a quite general situation it can be obtained from existing results. Then we derive the Yang extension theorem using a similar proof as wel...

| Motivated by the fact that time delays in a practical Direct-Sequence Code-Division Multiple-Access system can never be perfectly estimated, an improved Minimum-Mean Squared-Error (MMSE) based receiver is proposed and analyzed. Via the simple assumption of a probability distribution for the delay estimation errors, the proposed receiver can achieve performance superior to that of the conventi...

A discretized version of canonical quantum gravity proposed by Loll is investigated. After slightly modifying Loll’s discretized Hamiltonian constraint, we encode its action on the spin network states in terms of combinatorial topological manipulations of the lattice loops. Using this topological formulation we find new solutions to the discretized Wheeler-Dewitt equation. These solutions have ...

We discover multi-Hamiltonian structure of the complex MongeAmpère equation (CMA) set in a real first-order two-component form. Therefore, by Magri’s theorem this is a completely integrable system in four real dimensions. We start with Lagrangian and Hamiltonian densities in real variables, a symplectic form and the Hamiltonian operator, that determines the Poisson bracket. We have calculated a...

In this work, three different graphene-based materials, namely graphite oxide (GrO), thermally reduced graphite oxide (T-RGrO) and ascorbic acid multi-phase reduced graphene oxide (AMP-RGO), were synthesized and used to produce mixed matrix membranes (MMM) based on Matrimid®5218 for as separation. From the samples produced, a complete set of characterization was performed including XRD, FTIR, T...

I review the multi-dimensional generalizations of the Virasoro algebra, i.e. the non-central Lie algebra extensions of the algebra vect(N) of general vector fields in N dimensions, and its Fock representations. Being the Noether symmetry of background independent theories such as N -dimensional general relativity, this algebra is expected to be relevant to the quantization of gravity. To this e...