The demand for high-quality wireless communication services exceeded all expectations in the beginning of the 1990’s. The demand will continue to grow in the new century. In addition to wireless telephony, wireless data and video transmission will also be required, which clearly will increase the data rate to several megabits per second. In wireless local area networks, the expected data rate i...

the aim of this study is to investigate the role and structure of motivation in learning a foreign language in order to introduce the model ofinformation processing as a new approach and scale to evaluate themotivation of foreign languages.for this purpose,two hundred and fifty participant employees ofthe iranian oil terminals company enrolled in the english language training courses were selec...

label switching technology is a flexible and high performance method for forwarding layer three packets that are mapped to layer two flows. each label switch router, lsr, needs a specific label for every flow, where the number of labels depends on the mapping and granularity of flows. data and control driven methods are the most significant and popular methods in label mapping policy. the above...

The communication focuses on the educational environment for teaching "Digital Speech Processing" at undergraduate, graduate and PhD levels in the Department of Telecommunications from Technical University of Cluj-Napoca, Romania. Emphasis will be done to reveal particular successes and drawbacks in order to set up and to develop a modern curriculum during the last four years. This educational ...

Two methods of enzyme immobilization onto silica core-shell particles were developed. The first method involved the Candida rugosa lipase inside a previously synthesized mesoporous layer (deposited at 80 °C) surrounding dense core. To prevent leakage from support, an outer was deposited 40 °C around containing immobilized lipase. deposition second performed relatively lower temperature, to ther...

A software radio is a radio whose channel modulation waveforms are defined in software. A software radio receiver is an embedded platform that can support different communication standards. All the base-band processing is performed on a DSP. On the receiver side, the base-band processing encompasses matched filtering of the incoming data, frame synchronization, frequency offset and phase offset...

In the present paper, we point out that the basic result, which is the main tool, in [D. J. Wen, Projection methods for a generalized system of nonconvex variational inequalities with different nonlinear operators, Nonlinear Anal. 73 (2010) 2292–2297] has some fatal errors. Therefore, the results and algorithms in the above mentioned paper are no longer valid. To overcome with the problems in t...

the aim of this study is to compare the sensitometric properties of commonly used radiographic films processed with chemical solutions in different workload hospitals. the effect of different processing conditions on induced densities on radiologic films was investigated. two accessible double emulsions fuji and kodak films were exposed with 11-step wedge and processed with champion and cpac pr...