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218 articles for “frequency measurement”
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Quad-Band Notched Small Monopole Antenna with U-shaped Slots and SRRs for UWB Applications
Abstract: A quad-band notched small monopole antenna with U-shaped slots and SRRs for UWB applications is presented in this study. The quadruple band-notched characteristics can be achieved by embedding three U-shaped slots on the radiation patch and two split ring resonators (SRRs) near feed line, respectively. It has a tiny size, only 17 mm23 mm0.508 mm. The experimental and measured results demonstrate that the proposed antenna offers an impedance bandwidth across …
Published in Journal of Communication Engineering & Systems · Vol. 15, Issue 1, 2025 · pp. 21–31 Read article
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Spike Detection and Processing of TDEM Signals using Wavelet Transform
Abstract: This paper presents a new method for spike detection, parameterization and processing in ground based Time Domain Electromagnetic (TDEM) signals. Time Domain Electromagnetic methods are used for mineral exploration by sub-surface conductivity measurement of Earth. The Earth’s response measured using inductive sensors are contaminated by spikes in form of sferics and due to load and phase shift in power distribution lines. The spikes present in the measured signal can significantly …
Published in Current Trends in Signal Processing · Vol. 2, Issue 1-3, 2012 · pp. 82–92 Read article
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Studies on the enhancement of sensitivity in SOI-MEMS Piezoelectric Accelerometer for low frequency applications
Abstract: In the present paper the design, fabrication and characterization of the SOI-MEMS piezoelectric accelerometer is reported. MEMS Accelerometers developed by many researchers in the literature have achieved the necessary high sensitivity at high frequencies. The main challenge of this work is to design an accelerometer with high sensitivity at low frequencies. The analytical modeling and FEM analysis were performed on the device to arrive at the optimized design of the …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 20, Issue 1, 2018 · pp. 42–52 Read article
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A study conducted among young women living in specific locations of Honavar, Uttara Kannada, to evaluate their attitudes and knowledge about women abuse. With a view to organize a Mass Health Education Programme
Abstract: Worldwide and regional projections of violence against women indicate More than 25% of women in relationships between the ages of 15 and 49 report having experienced physical or sexual abuse at least once in their lifetime (since they were 15). Up to 38% of all female killings globally are the result of intimate relationship violence. Apart from domestic violence, 6% of women worldwide report experiencing sexual assault at the hands …
Published in International Journal of Brain Sciences · Vol. 1, Issue 1, 2024 · pp. 5–12 Read article
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A Study on accelerating threat of Emerging Infectious Diseases (EIDs) and imperative for a proactive, interdisciplinary Global Health Security Framework
Abstract: Emerging Infectious Diseases (EIDs) represent one of the most critical and persistent threats to global health security in the 21st century. Driven primarily by the synergy of unprecedented human encroachment into wild habitats, climate change-induced ecological disruption, accelerated international travel, and antimicrobial resistance, the frequency and severity of zoonotic spillover events are rapidly increasing. Traditional, reactive public health measures—focused on containment after an emergence—have repeatedly proven insufficient, leading to catastrophic …
Published in International Journal of Tropical Medicines · Vol. 3, Issue 1, 2026 · pp. 8–21 Read article
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Structure and Cube Texture Development Trend of Al4.5MgMn Alloy at Variable Annealing Conditions
Abstract: Hot-rolled Al4.5MgMn alloy was cold rolled to true strain levels 0.8, 1.6 and 2.3. Annealing at 300°C, 350°C and 400 °C was done to develop annealing structure. The annealed structures were measured by SEM-EBSD. The average grain size and grain size distributions were measured using Sigma-scan-Pro 5 structure analysis software. The average grain size and grain size distributions showed higher number frequency of lower annealing grain size with the increase …
Published in Journal of Materials & Metallurgical Engineering · Vol. 3, Issue 3, 2013 · pp. 32–38 Read article
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Arduino-based Colour Detector with TCS 230
Abstract: In today's world, technology has advanced to a level where almost anything is possible. One such example is the usage of color detectors in a variety of applications. Color detectors are devices that can detect and measure the color of an object or surface. Technology has numerous applications in industries such as textiles, automation, automotive, food, printing, pharmaceutical, and many more. The color detector using Arduino and TCS 230 color …
Published in Trends in Opto-electro & Optical Communication · Vol. 13, Issue 3, 2023 · pp. 18–22 Read article
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Kinetics of Non-isothermal Crystallization of Ge-Se-Sn Chalcogenide Glasses
Abstract: AbstractThe calorimetric measurements of as-prepared Ge30-xSe70Snx (8≤x≤20) chalcogenide glasses have been performed using differential scanning calorimetery (DSC) at five different heating rates (10, 15, 20, 25 and 30 Kmin-1) under non-isothermal conditions. These non-isothermal calorimetric measurements have been analyzed in terms of activation energy (Ec), Avrami exponent, dimensionality of growth, frequency factor, Ko(sec-1), half time of crystallization,t1/2(min) and crystallization rate parameter. These kinetic parameters have been evaluated using different theoretical …
Published in Research & Reviews : Journal of Physics · Vol. 4, Issue 2, 2015 · pp. 25–34 Read article
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Design and Implementation of Microstrip Line Fed Rectangular Patch Antenna
Abstract: AbstractThis paper presents a high-performance microstrip line fed rectangular patch antenna with resonance frequency of 2.75GHz. The antenna has been simulated using IE3D software as well as HFSS. The return loss of the patch antenna found to be 24dB through IE3D simulation tool. From the results obtained, it is clear that harmonics exists at 3.75GHz which successfully minimized by removing a part of microstrip conductor with dimensions in accordance to …
Published in Journal of Microwave Engineering and Technologies · Vol. 7, Issue 1, 2020 · pp. 1–4 Read article
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Power Spectral Study of Heart Rate Variability Time Series by the Adaptive Modified Continuous Morlet Wavelet Transform
Abstract: In this paper, a newly developed method referred as adaptive modified continuous Morlet wavelet transform has been proposed to improve the energy concentration in the time-frequency domain. The improvement is achieved by introducing the shape parameter to the Morlet function that is known as modified Morlet function. To make it adaptive, the modified Morlet function was optimized by concentration measure based on automatic determination algorithm. The proposed method was validated …
Published in Research and Reviews : A Journal of Medical Science and Technology · Vol. 6, Issue 2, 2017 · pp. 5–20 Read article
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Development of Random Pulse Width Modulation in Power Electronics Converter
Abstract: With the new advancement in power electronic devices the high frequency system can often causes acoustic noise, mechanical vibration, EMI related problems in inverter-fed AC machine due to harmonics content in voltage and current waveforms which makes operator feel uncomfortable to work. Proposed work deals with one of the Pulse Modulation Technique, Random Pulse Width Modulation (RPWM), which is a new and effective technique to let the inverter-fed ac motor …
Published in Journal of Microelectronics and Solid State Devices · Vol. 3, Issue 1, 2016 · pp. 1–8 Read article
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On the Electrical Conductivity of ZnO Nanocrystals Synthesized by Solvothermal Method
Abstract: ZnO nanocrystals were synthesized using microwave oven technique. The electrical properties of ZnO were studied using impedance spectroscopy. In this work, measurements on the AC and DC conductivities of the pelletized ZnO samples were carried out. The frequency dependence of both AC conductivity and the dielectric constant of nanocrystals of ZnO were investigated in the frequency range 1 Hz–1 MHz. Electrical characterizations using impedance spectroscopy were carried out for pelletized …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 2, Issue 3, 2012 · pp. 18–24 Read article
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Aerodynamics: Wind Load on Bridge and Construction
Abstract: This article is description about wind load correspondence for bridge constructions. Calculation of high pier has conclusive scheme around transverse direction of wind load for long span girder bridge. Ethic has scoped by code of pursue for design of highway bridge and culvert and load code for design of as build structure. Assessment of expected environmental loads is basic in design of engineering structures that influences chain of load carrying …
Published in Journal of Aerospace Engineering & Technology · Vol. 11, Issue 2, 2021 · pp. 47–54 Read article
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Assessment of Milk Quality Optimization of Yogurt Fermentation
Abstract: In the creation of new products, yogurt makers need to prioritize consumer preferences to enhance their market share. An advanced prediction method will help in grasping the fundamental connection between consumer preferences and sensory attributes. This study introduces a new deep learning approach that employs an autoencoder to derive product features from expert-scored sensory attributes. These sensory features are then analyzed through support vector machine regression to align them with …
Published in Research and Reviews : Journal of Dairy Science and Technology · Vol. 13, Issue 2, 2024 · pp. 6–12 Read article
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Anthropometric Measurements as Cardio-Metabolic Risk Factors Did Not Associate with Echocardiography Determinants in Type 2 Diabetes
Abstract: Obesity and Type 2 diabetes (T2D) are risk factors for cardiovascular events. Anthropometric measurements are considered as independent risk factors for these events. This study aimed to assess the link between anthropometric measurements that are considered as risk factors for cardiovascular events and echocardiography determinants in T2D. A total number of 50 T2D patients (20 males and 30 females) with a median age of 58.8 years were included in this …
Published in Research and Reviews: A Journal of Health Professions · Vol. 5, Issue 1, 2015 · pp. 1–6 Read article
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The Frequency Characteristics of Transformer Windings Considering the Separation-Dependence of the Inter-Turn Mutual Parameters
Abstract: The paper presents a direct method for the determination of the frequency characteristics of transformer windings. The dependence of both the inter-turn mutual inductances and capacitances on the separation between these winding turns is taken into consideration. From measured data available in the literature, a formula for this dependence is derived. The voltage and current distributions along the winding will be governed by two integro-differential equations in terms of the …
Published in Journal of Power Electronics and Power Systems · Vol. 6, Issue 3, 2016 · pp. 72–81 Read article
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Human Deep Skin Surface Vibration Frequency Detection from CT and DT Signals Using Genetic Algorithms
Abstract: To diagnose respiratory problems early on, a contactless, non-invasive, real-time assessment of human vibration is a crucial prerequisite. Optoelectronic plethysmography (OEP) and the forced oscillation technique (FOT), are two widely utilized methodologies, depending on variations in each patient’s local chest impedance. Calibration of the devices before each measurement is hence the primary problem of these approaches. This report presents a simulation-based analysis to assess the effectiveness of the CT and …
Published in International Journal of Algorithms Design and Analysis Review · Vol. 2, Issue 1, 2024 · pp. 9–16 Read article
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A Compact Design of Dual Band Micro Strip Antenna for WLAN/WiMax Applications
Abstract: In this paper compact dual wide band micro strip antenna has been designed with line feed technique. The return loss bandwidth achieved is 12.34% (1.398–1.582) GHz and 21.56% (2.395–2.974) GHz with a maximum return loss –44.89 dB at resonant frequency 2.656 GHz by using Zeland IE3D software. The fabricated line feed patch antenna is tested and measured by using spectrum analyzer.
Published in Journal of Microwave Engineering and Technologies · Vol. 1, Issue 3, 2014 · pp. 1–6 Read article
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Scope of ITS in Exaggerating Existing Traffic Systems in India
Abstract: AbstractIndia is the largest democracy of world. Its current population is 1.3 billion and the land area of 3.1 million square km. Increasing population and urbanization in India increases the demand of vehicles, which leads to a critical burden on our existing traffic management system. One of the key issues for smart cities is to apply more sustainable and eco-friendly solutions to overcome the existing traffic congestion and environmental pollution …
Published in Recent Trends in Sensor Research & Technology · Vol. 4, Issue 2, 2017 · pp. 14–18 Read article
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Estimation of Various Geomorphometric Aspects of Kandra River Basin of Panhala Tehsil, Kolhapur District (M.S.)
Abstract: The term morphometry senses the measurement and analysis of form and its properties. Incontext of geomorphology, which is science of land forms, it is concerned with the variousgeometrical aspects of the landforms. It is inevitable in the study of fluvial geomorphology.Morphometric analysis particularly deals with quantitative measurements of different aspectslike linear, aerial and relief, for instance stream order, stream length, drainage density,drainage frequency, bifurcation ratio, constant channel maintenance etc. Kandra …
Published in Journal of Remote Sensing & GIS · Vol. 11, Issue 1, 2020 · pp. 36–41 Read article