With limited frequency spectrum and a tremendous growth in the demand for mobile communication services, the problem of channel assignment becomes increasingly important. Efficient channel assignment allows for an increased ...

Traffic data and statistics (as density) are among the most important and crucial tools for the study of traffic, optimization of urban transportation and traffic programming. For this reason, the Tehran Traffic Control ...

We treat the problem of encoding the outputs from an information source, and the class of encoding schemes considered is restricted to those in which each output from the source is encoded as a separate, uniquely decodable ...

Two dimensional periodic arrays of dipole and patch elements can be used as frequency selective surfaces (FSS) for polarization or frequency filtering at microwave frequencies. Numerous papers dealing rigorously with the ...

n this paper, a new kind of coupled line called circular symmetric coupled strip or microstrip transmission line is introduced. These kind of coupled lines are less sensitive to external electromagnetic interference and ...

This study addresses the design and properties of a sliding-mode neural-network control (SMNNC) system for a nonlinear flexible arm that is driven by a permanent magnet (PM) synchronous servo motor. First, the dynamic model ...

In this study, the time-course of the recovery from inactivation of molluscan ionic currents is examined. Molluscan voltage-gated ionic currents are described in Hodgkin-Huxley-like equations. The peak value function of ...

Railway power system planners and operators need a tool for testing their designs or new timetables. This paper presents a tool for the DC traction systems, an algorithm called decoupled AC/DC load flow. The main feature ...

Transformers are normally designed and built for use at rated frequency and prefect sinusoidal load current. Non-linear loads on a transformer lead to higher losses, early fatigue of insulation, premature failure and ...

This paper presents a variable structure based approach to the load frequency control system problem in electric power generation systems. This approach combines the salient features of both variable structure and fuzzy ...