Search
387 articles for “frequency-based”
-
Identification of English Dialects and Emotions using Spectral and Prosodic Features of Speech Signal Processing
Abstract: AbstractIn this paper, the authors have explored speech features to identify English dialects and emotions. A dialect is any distinguishable variety of a language spoken by a group of people. Emotions provide naturalness to speech. Speech database considered for dialect identification task consists of spontaneous speech spoken by male and female speakers. The emotions considered in this study are anger, disgust, fear, happy, neutral and sad. Prosodic and spectral features …
Published in Journal of Computer Technology & Applications · Vol. 4, Issue 2, 2013 · pp. 10–17 Read article
-
Exploring Antimalarial Activity of Chalcone Derivatives through QSAR
Abstract: Background: The core structure of chalcones contains a reactive α,β-unsaturated system within the aromatic rings, which plays a key role in mediating various biological effects. These effects include enzyme inhibition, anticancer activity, anti-inflammatory properties, as well as antibacterial, antifungal, antimalarial, antiprotozoal, and anti-filarial actions.Modifying the structure by introducing substituent groups to the aromatic ring can enhance potency, reduce toxicity, and expand their range of pharmacological actions.Methods: A total of twenty-seven …
Published in International Journal of Bioinformatics and Computational Biology · Vol. 3, Issue 2, 2025 · pp. 1–6 Read article
-
Feature Extraction and Analysis of Bearing Faults: A Review
Abstract: One of the most important steps in identifying bearing problems is feature extraction. In order to provide a more meaningful dataset, it entails locating and extracting pertinent features from raw bearing vibration signals. Tasks involving categorization and prediction can then make use of these attributes. In many practical applications, such as monitoring rotating machinery or electronic components, the raw signals collected (e.g., vibration, current, temperature) are often complex, high-dimensional, and …
Published in Trends in Mechanical Engineering & Technology · Vol. 15, Issue 2, 2025 · pp. 20–28 Read article
-
A Comprehensive Review of Road Infrastructure Safety Measures for Reducing Traffic Accidents and Improving Sustainable Transportation
Abstract: Road traffic accidents continue to be a major public health and transportation challenge, causing significant loss of life, injuries, and economic damage worldwide. Road infrastructure is one of the most critical factors influencing traffic safety, as well-designed and properly maintained roads can substantially reduce the frequency and severity of accidents. This review paper examines the role of road infrastructure in improving road safety by analyzing existing research on highway geometric …
Published in Trends in Transport Engineering and Applications · Vol. 13, Issue 2, 2026 · pp. 1–13 Read article
-
Radio Frequency Next-Generation Advances
Abstract: Radio frequency (RF) technology is a key enabler for modern wireless communications, driving the evolution of telecommunications, healthcare, aerospace, defence and the Internet of Things (IoT). Faster, more reliable and energy-efficient communication systems have been developed at a rapid pace due to recent discoveries in RF engineering. This article discusses novel advancements in RF technologies including enhanced antenna design, millimeter-wave communication, software defined radio, smart spectrum management, and RF-based sensor …
Published in International Journal of Radio Frequency Innovations · Vol. 4, Issue 1, 2026 Read article
-
Software and Hardware Implementation of Quasi z Source Inverter in DC-DC Converter with DC Motor as Load
Abstract: DC/DC power converters are employed in applications like telecom, industrial, automotive, military, aerospace and motor drives. The dc/dc converter market is forecast to grow at a strong rate to $ 4.3 billion by 2016. The primary factor limiting the widespread application of low voltage producing renewable energy sources to motor load is interfacing of converter system. The traditional voltage source inverter (VSI) cannot be dealt without overrating of inverter because …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 3, 2015 · pp. 97–107 Read article
-
Driver Drowsiness Detection System
Abstract: One of the main causes of road accidents worldwide in recent years is driver fatigue. Assessing a driver's mood, or how sleepy they are, is a clear approach to gauge their level of exhaustion. Therefore, detecting driver fatigue is very important to save lives and property. The creation of a prototype drowsiness detection system is the aim of this research. The system operates in real time, continuously capturing images and …
Published in International Journal of Optical Innovations & Research · Vol. 3, Issue 2, 2025 · pp. 16–21 Read article
-
A Machine Learning-based Analysis of Climate Change
Abstract: Climatic variations are a pressing global challenge that demands immediate and comprehensive attention. A wealth of articles has been published on climate change mitigation and adaptation, yet there remains a need for innovative methods to explore the complexities of climatic variations and to devise more efficient and effective strategies for adjustment and alleviation. With technological advancements, machine learning (ML) and deep learning (DL) approaches have derived significant popularity across various …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 13, Issue 2, 2024 · pp. 1–10 Read article
-
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
-
Accessibility Index of Selected Combine Harvesters of Chhattisgarh Region
Abstract: Combine harvesters have become more popular with an increase in harvested area in Chhattisgarh. It must be ensured that the workplace of the combine harvesters must fulfill the anthropometric criteria of agricultural workers of Chhattisgarh. Incorporating anthropometric criteria into the design of combine harvesters is essential for improving the comfort, efficiency, and safety of agricultural workers in Chhattisgarh. In addition to supporting the operators, this strategy likewise enhances the region's …
Published in Journal of Experimental & Applied Mechanics · Vol. 16, Issue 1, 2025 · pp. 34–40 Read article
-
BMI and Nutritional Level Classification using Bioelectrical Impedance Analysis
Abstract: AbstractThis paper is based on the study of improve the cutoff point and nutritional classification and status of overweight/obesity based on the EMI. Study was conduct on more than 1000 individual on both genders age between 18 and 60 years. The subjects underwent measurement of weight and height and bioelectrical impedance analysis. Instrumentation for the measurement of bioimpedance is simple, cost effective for mass production and is easy to use. …
Published in Journal of Microelectronics and Solid State Devices · Vol. 6, Issue 3, 2019 · pp. 18–27 Read article
-
Assessment of Knowledge, Attitude, Practice and Associated Factors of Emergency Contraceptive Pills among Female Youths in Mekelle City, Tigray Region, North Ethiopia
Abstract: For girls and young women aged 15–19, pregnancy and childbirth is the number one killer. It’s the cause of 50,000 deaths of teenage girls every year. Ensuring that adolescent girls are able to use suitable contraception to delay the age at which they first become pregnant is a key part of the family planning challenge. Around 16 million girls between the ages of 15 and 19 give birth each year. …
Published in Research and Reviews: A Journal of Health Professions · Vol. 5, Issue 1, 2015 · pp. 7–21 Read article
-
Design and analysis of PV based Micro-inverter using INC MPPT controller and Fuzzy Logic controller
Abstract: The reserve of conventional energy sources such as coal, natural gas, and crude oil are rapidly decreasing with increasing demand of electricity in the world.Also the fossil fuels cause air pollution, global warming and similar environmental problems. Therefore, recent studies have become widespread about renewable energy sources (RESs) such as biomass,hydropower, geothermal, wind and solar which are the most popular worldwide. Among other RESs, solar energy is assumed as the …
Published in Journal of Microcontroller Engineering and Applications · Vol. 8, Issue 1, 2021 · pp. 6–18 Read article
-
Design and analysis of PV based Micro-inverter using INC MPPT controller and Fuzzy Logic controller
Abstract: The reserve of conventional energy sources such as coal, natural gas, and crude oil are rapidly decreasing with increasing demand of electricity in the world.Also the fossil fuels cause air pollution, global warming and similar environmental problems. Therefore, recent studies have become widespread about renewable energy sources (RESs) such as biomass,hydropower, geothermal, wind and solar which are the most popular worldwide. Among other RESs, solar energy is assumed as the …
Published in Journal of Microwave Engineering and Technologies · Vol. 8, Issue 2, 2021 · pp. 16–29 Read article
-
Performance Analysis of DG FinFET for Ultralow-power Subthreshold Applications
Abstract: Subthreshold operating region of transistor shows huge potential toward satisfying demand of ultralow power (ULP) consumption from handheld portable devices. However, operating device with such small subthreshold leakage current as a switching current gives huge penalty in their operating frequency. For subthreshold operating region key design goal is to boost the speed of the device. DG FinFET device shows excellent device characteristics in subthreshold operating region. In this paper, 1-bit …
Published in Journal of Electronic Design Technology · Vol. 1, Issue 1-3, 2011 · pp. 26–33 Read article
-
Analysis of Six-Pulse Bridge Circuits Including Zener and Semiconductor Diodes Part One
Abstract: This paper addresses the analysis of electronic bridge circuits including Zener and/or semiconductor diodes. The analysis is based on recently suggested models for these diodes. A compact Mathematica code written in the Versions 7.0, 11.3 and 12.2 simulating a six-pulse rectifier bridge circuit is then derived and mathematically implemented. It investigates the time-domain transient and steady-state analysis of several representative case studies. In principle, the computer simulation can yield the …
Published in Journal of VLSI Design Tools and Technology · Vol. 12, Issue 1, 2022 · pp. 14–22 Read article
-
Design and Analysis of PV-based Micro-inverter using INC MPPT Controller and Fuzzy Logic Controller
Abstract: The reserve of conventional energy sources such as coal, natural gas, and crude oil are rapidly decreasing with increasing demand of electricity in the world. Also, the fossil fuels cause air pollution, global warming, and similar environmental problems. Therefore, recent studies have become widespread about renewable energy sources (RESs) such as biomass, hydropower, geothermal, wind and solar which are the most popular worldwide. Among other RESs, solar energy is assumed …
Published in Journal of Microcontroller Engineering and Applications Read article
-
Developmental Responses to Structured Training Loads in Competitive Youth Judo
Abstract: This study investigates the influence of a planned and regulated training-load structure on the physical and technical growth of elite youth Judoka aged 10 to 16. A four-week training program progressively modified the key variables of training intensity, frequency, and volume to support performance development while avoiding over-fatigue and injury. Ten athletes participated with performance assessed before and after training using tests for Muscular endurance, Core stability, Lower body explosive …
Published in Recent Trends in Sports · Vol. 3, Issue 1, 2026 · pp. 07–15 Read article
-
A Gamified Digital Platform for Sustainable Farming Practices: Simulation, Statistical Analysis, and Water Resource Management Implications
Abstract: Sustainable farming practices play a critical role in enhancing agricultural water use efficiency, conserving limited water resources, and ensuring long-term food security under increasing environmental and climatic pressures. Despite their importance, farmer participation in conventional agricultural extension and training programs remains limited due to low engagement and a lack of sustained motivation. To address this challenge, this study proposes a gamified digital decision-support platform aimed at promoting sustainable agricultural and …
Published in Journal of Water Resource Engineering and Management · Vol. 13, Issue 1, 2026 · pp. 13–24 Read article
-
Recent Innovations in Semiconductor Materials for Smart Electronic Devices
Abstract: Recent advancements in semiconductor materials have significantly transformed the design, performance, and functionality of smart electronic devices such as smartphones, wearable systems, IoT devices, autonomous systems, and biomedical electronics. With the continuous demand for higher processing speed, lower power consumption, improved thermal stability, and extreme miniaturization, traditional silicon-based semiconductor technology is facing major limitations. As device dimensions shrink to the nanometer scale, challenges such as leakage current, heat dissipation, and …
Published in Journal of Semiconductor Devices and Circuits · Vol. 13, Issue 2, 2026 · pp. 1–11 Read article