In the paper, the geometrical parameters and energetics of the extremely narrow pseudo-nondiffracting beams with the spot size of several micrometers are examined. The main attention is focused on design, realization and testing of the set-up enabling conversion of the laser diode beam or the fiber mode to the narrow Bessel-Gauss beam whose spot can be continuously relocated across the plane pe...

In this paper, a real-time information service platform for high-speed train was proposed and implemented. With this platform, all passengers of train will freely to get access by Wi-Fi or other wireless network to enjoy movie, music, train information and travel information. Besides, the platform was connected to a FPGA based data processing center to collect train operation data including ins...

Conversion should not be a problem. It is best to use a general accepted tool, which comes with a preprint format. Until BLUe’s format is generally accepted a BLUe script has to converted to comply with publishers’ formats to get it out. Conversion via TEX’s expansion is exercised in this note, with as result a plain TEX Convertor Assistant, in the spirit of AWK. In netland it does not matter b...

This paper takes into account a hybrid power system consisting of solar and wind units. Both units are connected to the utility grid. The paper concentrates on the use of multijunction solar cell (MJSC) in order to increase the conversion efficiency. The DC output of solar photovoltaic (PV) system is raised by using boost convertor. MPPT technique is used to maximize the output of solar system....

Future of wireless communication system designed to merge a variety of services such as voice, data, image and video. These services have various demands on the bandwidth and data rate. So studies has been done to access these requirements, Software Define Radio ( SDR) is being presented as technique offers the possible revolutions the way radios are manufacturing dissemination and used SDR pro...

Ezafe construction is an idiosyncratic phenomenon in the Persian language. It is a good indicator for phrase boundaries and dependency relations but mostly does not appear in the text. In this paper, we show that adding information about Ezafe construction can give 4.6% relative improvement in dependency parsing and 9% relative improvement in shallow parsing. For evaluation purposes, Ezafe tags...

A system for the measurement of accelerometer shock sensitivity is described, complying with the requirements of comparison calibration per ISO 16063-22 “Methods for the calibration of vibration and shock transducers Part 22: Shock calibration by comparison to a reference transducer”. This system is comprised of a newly designed exciter, a new back-to-back comparison standard with integral char...

Ali K. Nahar University of Technology, Department of Electrical Engineering Abstract A first order of DWA (data weighted averaging) technique is proposed to improve 6-bit digital-to-analog convertor (DAC). In addition, this paper discusses the impact of mismatch between DAC unit elements. The simulation results show the effectiveness of the DWA technique in reduction of inband tones, also DWA t...