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680 articles for “measurement”
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Research ArticleOpen accessEvery word in the titleDynamic Measurement of Copper (II) Ion Adsorption in Activated Carbon Fixed Bed ColumnsTanokkorn Banjonglaiad, Eric Croiset, Peter Silveston et al.Dynamic experiments were carried out on the adsorption of copper (II) ions in a laboratory packed bed of activated carbon. Both pulse and step change inputs were used. Measurements were reproducible and replicate measurements furnished nearly identical parameters for a heterogeneous model of the activated carbon bed assuming Langmuir adsorption isotherm. The initial concentration of copper (II) ion was 3 … …American Journal of Environmental Sciences, Vol. 4, Issue 4 · 31 Aug 2008 · 6,866 accessesView PDFCite
Research ArticleOpen accessEvery word in the titlePath Loss Measurements for Wireless Communication in Urban and Rural EnvironmentsYahia Zakaria, Jiri Hosek, Jiri MisurecPath loss models are useful planning tools that allow the designers of wireless communication networks to achieve optimal levels for the base station deployment and meeting the expected service level requirements. In this study various propagation models (COST 231 Walfisch-Ikegami W-I, Ericsson and Stanford University Interim SUI) are analyzed and compared with the measurements. The measured data were taken in … …American Journal of Engineering and Applied Sciences, Vol. 8, Issue 1 · 16 Apr 2015 · 7,837 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleQuality Measurements on the Radio Interface of the Mobile Communication in the Proximity of the Power SystemSaid Ghnimi, Adnen Rajhi, Ali Gharsallah, Fakhreddine KhlifaProblem statement: The electric power lines and its associated equipments generally produce an electromagnetic noise in their environment, which are likely to have dangerous effects on propagation environment to the Global System for Mobile communication (GSM) cellular mobile network. Approach: In this study, we analyzed the characteristics of the power line noise and its correlation with the GSM burst; showing … …American Journal of Applied Sciences, Vol. 8, Issue 5 · 26 Mar 2015 · 7,005 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEXPERIMENTAL MEASUREMENTS AND MODELING USING CESFAMBTM SOFTWARE OF THE PRODUCT GAS COMPONENTS ON THE 2MWTH GASIFIER PLANTI.V. Dyakov, G.V. Baron, S. Bram et al.The work assesses the performance of a prototype 2MWth plant as an auxiliary source of energy based on biomass gasification using wood pellets as a fuel. During steady operation, process temperature, process pressure and concentrations of components in the product gas have been measured the measurements are compared to the simulation results obtained with the CeSFaMBTM software. The underlying model … …Energy Research Journal, Vol. 5, Issue 1 · 1 Dec 2014 · 6,548 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleGPS Ionospheric Total Electron Content and Scintillation Measurements during the October 2003 Magnetic StormMohammad Awad Momani, Takialddin A. Al Smadi, Farouq M. Al Taweel, Khaldoon A. GhaidanProblem Statement: Ionospheric scintillations, cause significant effects on satellite signals for communication and navigation in equatorial region and polar regions mainly during sever magnetic storms periods. This phenomenon is not fully understood due to few studies performed. The study investigates variability of Total Electron Content (TEC) and ionospheric scintillation during October 2003 magnetic storm over Antarctica using ground based GPS … …American Journal of Engineering and Applied Sciences, Vol. 4, Issue 2 · 13 Jul 2011 · 8,514 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleFish Recognition Based on Robust Features Extraction from Size and Shape Measurements Using Neural NetworkMutasem Khalil Alsmadi, Khairuddin Bin Omar, Shahrul Azman Noah, Ibrahim AlmarashdehProblem statement: Image recognition is a challenging problem researchers had been research into this area for so long especially in the recent years, due to distortion, noise, segmentation errors, overlap and occlusion of objects in digital images. In our study, there are many fields concern with pattern recognition, for example, fingerprint verification, face recognition, iris discrimination, chromosome shape discrimination, optical … …Journal of Computer Science, Vol. 6, Issue 10 · 5 Aug 2010 · 9,308 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleWireless Communication with a Microprocessor Based Ultrasonic Meter for Flow MeasurementsMahmoud Z. IskandaraniProblem statement: Although the traditional metering system and method for controlling flow is generally safe, reliable and robust, it does suffer certain drawbacks, such as limited accuracy and the ability to implement complex reactive rate designs. Hence, there is a need for a circuit and method of increasing metering accuracy, as well as the position control accuracy for variable flow … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 4 · 31 Dec 2009 · 7,590 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleMeasurements and Model Calibration of Urban Traffic Noise PollutionN. Al-Mutairi, F. Al-Rukaibi, P. KoushkiProblem statement: The problem of urban traffic noise pollution is universal and in the past few decades it has grown to the point that it has become a major concern for both the public and the policy-makers. Approach: In a comprehensive 18 month research project, traffic-generated noise was monitored at 47 roadway locations in fourteen districts in metropolitan Kuwait in … …American Journal of Environmental Sciences, Vol. 5, Issue 5 · 31 Oct 2009 · 7,625 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleGeoradar Measurements for the Snow Cover DensityA. GodioGround Probing Radar (GPR) devices is adopted for the analysis of thickness and the mechanical properties (density) of the snow cover in some test site in Alps, in Northern Italy. The performances of standard radar systems for the snow cover characterisation are analysed, the main aim is to assess the reliability of the method to estimate the snow density, the … …American Journal of Applied Sciences, Vol. 6, Issue 3 · 31 Mar 2009 · 7,594 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleImprovement of Nuclear Track Density Measurements Using Image Processing TechniquesA. Mostofizadeh, X. Sun, M. R. KardanThe well known edge detection methods were applied to evaluate accuracy and precision of nuclear track densitometry of polycarbonate detector. All measurements carried out in two cases of before and after improvement of track images. Considering the overlapping phenomenon -including double and triple tracks- experimental and statistical results showed that not only each particular edge detection method affects the accuracy … …American Journal of Applied Sciences, Vol. 5, Issue 2 · 28 Feb 2008 · 7,431 accessesView PDFCite