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225 articles for “frequency analysis”
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Research ArticleOpen accessIn the abstractDC Motor Control Predictive ModelsRavinesh Singh, Godfrey C. Onwubolu, Krishnileshwar Singh, Ritnesh RamDC motor speed and position controls are fundamental in vehicles in general and robotics in particular. This study presents a mathematical model for correlating the interactions of some DC motor control parameters such as duty cycle, terminal voltage, frequency and load on some responses such as output current, voltage and speed by means of response surface methodology. For this exercise, … …American Journal of Applied Sciences, Vol. 3, Issue 11 · 30 Nov 2006 · 7,019 accessesView PDFCite
Research ArticleOpen accessIn the abstractImproving Mechanical Characteristics of Inverter-induction Motor Drive SystemHussein Sarhan, Rateb IssaAn inverter-three-phase squirrel-cage induction motor drive system with improved mechanical characteristics is presented. The proposed system provides mechanical characteristics with constant maximum torque or increased maximum torque and reduced slip speed at frequencies below the nominal frequency. The control algorithm is based on the constant volts per hertz principle using two improvement techniques: keeping maximum torque constant or keeping magnetic … …American Journal of Applied Sciences, Vol. 3, Issue 8 · 31 Aug 2006 · 7,661 accessesView PDFCite
Research ArticleOpen accessIn the abstractRisk Assessment Study for Storage ExplosiveS. Saiful Azhar, M. Abdul Rahman, M. Saari et al.In Malaysia, there has been rapidly increasing usage in amount of explosives due to widely expansion in quarrying and mining industries. The explosives are usually stored in the storage where the safety precaution had given high attention. As the storage of large quantity of explosive can be hazardous to workers and nearby residents in the events of accidental denotation of … …American Journal of Applied Sciences, Vol. 3, Issue 1 · 31 Jan 2006 · 7,102 accessesView PDFCite
Research ArticleOpen accessIn the abstractElectro-diagnostic and Clinical Changes of Peripheral Neuropathies in Bam Earthquake VictimsNaser Zangiabadi, Mohammad Naeem AhrariTo examine and diagnose patients who injured in Bam earthquake at 5:26:52 Am (local time) on Friday, December 26, 2003 with traumatic peripheral neuropathies then treat and follow up. A longitudinal study was deigned. 159 patients with traumatic neuropathies were selected at the first stage of study. After six months follow up only 39 patients satisfied to enter the study. … …American Journal of Environmental Sciences, Vol. 1, Issue 3 · 30 Sep 2005 · 6,719 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordUnderstanding Artificial Intelligence Adoption in Vietnam: An Organizational-Level AnalysisDuong Quang Khanh, Nguyen Thi Van Anh et al.This study examines the level, determinants, and perceived outcomes of Artificial Intelligence (AI) adoption in Vietnamese organizations using survey data from 142 employees and managers across multiple sectors. Descriptive statistics, t-tests, ANOVA, and multiple regression were applied to analyze sectoral differences, the role of training, and predictors of AI-enabled work performance. The results show a moderate-to-high level of AI adoption, … …Journal of Computer Science, Vol. 22, Issue 5 · 23 May 2026 · 1,551 accessesView PDFCite
Review ArticleOpen accessAll words, across the recordRainwater Harvesting and Treatment Systems in South America: A Bibliometric Analysis (2000-2021)Eli Morales Rojas, Manuel E. Reátegui-Inga, Reiner Reátegui Inga et al.The objective of this study was to review the main rainwater harvesting and treatment systems through a bibliometric analysis from 2000-2021. A bibliometric analysis was used in the R program and VOS viewer, the query involved titles, abstracts, and keywords during the last 20 years (2000-2021). The results indicate that from 2013 onwards, interest in this topic increased. 13% of … …American Journal of Applied Sciences, Vol. 19, Issue 1 · 13 Sep 2022 · 7,198 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordFree Vibration Analysis of Rectangular Cantilever Plates Using the Hyperbolic-Trigonometric SeriesMikhail V. Sukhoterin, Sergey O. Baryshnikov, Dmitry A. AksenovThe purpose of this paper is to develop a numerical analytical method for an accurate solution to the problem on frequencies and mode shapes of a rectangular cantilever plate. The problem is reduced to an infinite system of linear algebraic equations relative to ratios of trigonometric series, which contains vibration frequency as a parameter. The core of the method is … …American Journal of Applied Sciences, Vol. 13, Issue 12 · 23 Dec 2016 · 7,288 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordConcordance and Term Frequency in Analyzing API Calls for Malware Behavior DetectionNur Hilda Amira Abd Wahab, Masnizah Mohd, Ravie Chandren Muniyandi et al.Application Programming Interface (API) is used for the software to interact with an operating system to do certain task such as opening file, deleting file and many more. Programmers use this API to make it easier for their program to communicate with the operating system without having the knowledge of the hardware of the target system. Malware author is an … …Journal of Computer Science, Vol. 15, Issue 9 · 25 Sep 2019 · 7,790 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordAnalysis of Nucleoli in Intact Lymphocytes in Different Mammalian Species and HybridsBaylar Iolchiev, Pavel Klenovitskiy, Vugar Bagirov et al.The purpose of this study was to develop methods for quantitative and qualitative assessment of the activity of the nucleolus using the color intensity of argyrophilic regions and to study the effect of the species feature on the quantitative and qualitative indicators of the nucleoli and nucleolus organizer regions. The experiment involved Ovis aries (n = 40), hybrids of domestic … …OnLine Journal of Biological Sciences, Vol. 22, Issue 1 · 24 Jan 2022 · 6,070 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordRadar Cross Section Modelling and Analysis of Static and Dynamic Targets using MATLABPunam Pande, Sreemathy R, Mousami TurukRadar Cross Section (RCS) is an important characteristic of the electromagnetic system for target detection. This study presents detailed modelling of Radar Cross Section (RCS) of static simple objects like sphere, cylinder, triangular plate, circular flat plate, truncated cone and complex objects using MATLAB Radar toolbox. The RCS modelling of simple objects is also done with MATLAB POFACET GUI 4.3 … …Journal of Aircraft and Spacecraft Technology, Vol. 6, Issue 1 · 21 Mar 2022 · 11,031 accessesView PDFCite