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218 articles for “frequency measurement”
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Analyzing Flood Return Levels Using the Gumbel Distribution in Niamey, Niger
Abstract: Floods are among the most severe natural disasters, capable of causing significant damage to both the environment and society. This research utilizes the Gumbel distribution to analyze flood return levels by examining historical data from Niamey, Niger. The study focuses on river heights, flow rates, and precipitation patterns to understand the dynamics of flooding in the region. By analyzing these parameters, the research aims to identify severe weather trends and …
Published in Journal of Water Resource Engineering and Management · Vol. 11, Issue 2, 2024 · pp. 1–12 Read article
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Teen Pregnancy in the Event of a Pandemic: A short commentary
Abstract: There is a strong correlation between the COVID-19 epidemic and an increase in rates of child marriage and teenage pregnancies around the world. In sub-Saharan Africa, an estimated 608,000 additional girls are at danger of child marriage and 542,000 additional girls are at risk of early pregnancy. A mother's health, as well as the economy and society at large, may suffer if an adolescent decides to get pregnant. Due to …
Published in Research and Reviews: A Journal of Health Professions · Vol. 13, Issue 4, 2023 · pp. 42–45 Read article
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Monitoring of Unauthorized Identity and Access Behaviour for Outsourced Data in Cloud Environment
Abstract: The outsourcing of data is a significant challenge in the modern cloud computing ecosystem when it comes to tracking unauthorized identification and access behaviour. In order to overcome this issue, this research suggests a thorough method for reliable anomaly detection in cloud systems. Improving data security and offering a trustworthy monitoring system are the two main goals. The suggested approach proceeds methodically, gathering information from several sources such as user …
Published in Journal of Communication Engineering & Systems · Vol. 14, Issue 2, 2024 · pp. 9–19 Read article
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Teen Pregnancy in the Event of a Pandemic: A short commentary
Abstract: There is a strong correlation between the COVID-19 epidemic and an increase in rates of child marriage and teenage pregnancies around the world. In sub-Saharan Africa, an estimated 608,000 additional girls are at danger of child marriage and 542,000 additional girls are at risk of early pregnancy. A mother's health, as well as the economy and society at large, may suffer if an adolescent decides to get pregnant. Due to …
Published in Research and Reviews: A Journal of Health Professions · Vol. 12, Issue 2, 2022 · pp. 42–45 Read article
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CPW-fed Dual Sense Slot Antenna for Circular Polarization
Abstract: A novel compact dual-band and dual-sense circularly polarized coplanar waveguide (CPW) fed rectangular slot antenna is proposed. Dual-band and dual-sense is realized by a proper choice of the L-shape feed line and two parasitic elements inside the slot. A prototype dual-sense antenna is fabricated. The antenna has a compact size of 63.5×55mm2. Measured 3dB axial ratio bandwidth of the lower band with right hand circular polarization (RHCP) is 26.32% (1.435GHz …
Published in Journal of Microwave Engineering and Technologies · Vol. 8, Issue 1, 2021 · pp. 17–24 Read article
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UWB Band Pass Filter Using Dielectric Resonator
Abstract: A novel ultra-wideband (UWB) bandpass filter is proposed and implemented using a dielectric resonator, with aim of transmitting the signals in the whole UWB passband of 3.1–10.6 GHz. Ultra-wideband (UWB) is a promising innovation for some remote applications because of its expansive transfer speed, great proportion of transmission information and low power cost. The filter is compact in size with a great simplicity in assembly and integration. The developed UWB …
Published in Journal of Microwave Engineering and Technologies · Vol. 3, Issue 3, 2016 · pp. 25–29 Read article
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Implementation of Closed Loop Control of Flow in Air Blower System Using PLC and SCADA
Abstract: The intention of this paper is to design and implement the closed loop control of air flow rate in the air blower system. Desired value of flow rate is provide from the SCADA (Supervisory Control and Data Acquisition) and actual value of flow rate is measured through the flow sensor. Based on the difference between actual and desired value of flow rate, PLC (Programmable Logic Controller) increases or decreases the …
Published in Journal of Control & Instrumentation · Vol. 7, Issue 3, 2016 · pp. 39–43 Read article
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Energy-efficient HVAC System with Decision Tree Classifier and Real-time SMS Notification
Abstract: This research paper explores the design and implementation of an energy-efficient heating, ventilation, and air conditioning (HVAC) system aimed at optimizing energy consumption and enhancing operational efficiency. The system incorporates high-efficiency components, including axial flow fans, motors, and intelligent variable frequency drives, achieving an overall system efficiency of up to 85%. By utilizing both static and dynamic pressures, the HVAC system operates more effectively under varying conditions compared to traditional …
Published in International Journal of Advanced Robotics and Automation Technology · Vol. 2, Issue 2, 2024 · pp. 29–34 Read article
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Occupational Infections and Preventive Measures: An Update
Abstract: There are many infections which are closely associated with certain occupations, whereby the workers are put at a higher risk of being contracted with certain infections in the work setup. Occupational hazards are classified as being either physical (high temperature or pressure) or chemical (organic solvents and chemicals) or biological (virus, bacteria, fungi) hazard. Sometimes the prevalent occupation-associated life-style results in higher risk of exposure to the infections. These hazards …
Published in Research and Reviews: A Journal of Medicine · Vol. 1, Issue 1, 2011 · pp. 88–97 Read article
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Noise-Resilient QPSK Modem for Reliable Communication for Green Communication
Abstract: The channel noise is the severely degraded the performance of communication system and that also limits the maximum data transmission rate. Hence, it is required to design a demodulator in a receiver which overcomes the effect of noise in the received signal, reconstructs un-corrupted information signal and improves data rate. In QPSK, noise effect the phase of the modulated signal and that causes error in the information signal. This study …
Published in Recent Trends in Electronics Communication Systems · Vol. 12, Issue 1, 2025 · pp. 36–46 Read article
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Flood Resistant Houses
Abstract: Unusual high stage of river is called flood. In flood, the water level rises to an extent in which water starts spilling over the bank and spreading to the flood plains. The frequency and intensity of floods has intensified in the country over the years primarily due to encroachment of flood plains because of obvious advantages of water supply and irrigation. Flood causes extensive damage to infrastructure, the economy and …
Published in Journal of Construction Engineering, Technology & Management · Vol. 6, Issue 3, 2016 · pp. 54–56 Read article
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Cybersecurity Early Detection Algorithms for Threats
Abstract: Cybersecurity plays a vital role in protecting digital systems, networks, and data from unauthorized access, misuse, and cyberattacks in an increasingly interconnected world. As reliance on internet-based technologies continues to grow, the frequency and sophistication of cyber threats have also increased, making effective cybersecurity strategies essential. Cybersecurity encompasses a comprehensive framework that integrates technological solutions, organizational processes, and human awareness to ensure the confidentiality, integrity, and availability of information. Key …
Published in Journal Of Network security · Vol. 14, Issue 1, 2026 · pp. 31–37 Read article
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The Practical Use of Cholesteric Liquid Crystal Film for Development of New Technologies
Abstract: The use of cholesteric liquid crystal films, using the remarkable property of cholesteric liquid crystals to change their color at the temperature changes, is well known for measuring temperature, in medicine, in jewelry and so on. The article presents the practical use of cholesteric liquid crystal films in the developed musical color device, which “animates” the pattern with a multi-colored color in accordance with the frequency spectrum of the signal …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 10, Issue 4, 2023 Read article
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Polymer-Based Acoustic Composite Materials for Urban Noise Mitigation: Design, Performance and Legal Integration
Abstract: This study explores the development and use of polymer-based acoustic composite materials for effective urban noise mitigation, wherein the performance of the materials is linked to legal compliance frameworks. Rapid urbanization has intensified noise pollution from transportation, industrial activity, and construction, posing a serious threat to public health and environmental quality. Although regulatory standards exist, their implementation is often limited due to inadequate technical interventions. This research focuses on advanced …
Published in Journal of Polymer & Composites · Vol. 14, Issue 3, 2026 · pp. 403–412 Read article
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Comprehensive Review and Analysis of Improved Filtering Methodology Based Image De-noising System
Abstract: A digital image is often ruined by noise that comes from the process and equipment used to make it or that is added to the image while it is being sent. Different kinds of noise, like impulse noise, uniform noise, Salt-and-Pepper noise, and additive Gaussian noise, can show up in images. Using a good image de-noising method, noise can be taken out of an image to bring back its details. …
Published in Journal of Microwave Engineering and Technologies · Vol. 9, Issue 2, 2022 · pp. 34–45 Read article
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The Practical Use of Cholesteric Liquid Crystal Film for Development of New Technologies
Abstract: The use of cholesteric liquid crystal films, using the remarkable property of cholesteric liquid crystals to change their color at the temperature changes, is well known for measuring temperature, in medicine, in jewelry and so on. The article presents the practical use of cholesteric liquid crystal films in the developed musical color device, which “animates” the pattern with a multi-colored color in accordance with the frequency spectrum of the signal …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 8, Issue 2, 2021 · pp. 24–30 Read article
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Change of Capacitance in Cancerous Cell
Abstract: Cancer is a genetic disease. It is characterized by out of control growth of cell. It harms the body with its uncontrollable growth. Tumors that do not spread and show limited growth are generally considered to be benign. More dangerous are malignant tumors which can manage to divide and grow. They may be very dangerous and may cause death. Early detection of the disease helps in treatment and may save …
Published in Research and Reviews: Journal of Oncology and Hematology · Vol. 4, Issue 1, 2015 · pp. 29–32 Read article
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Evaluation of Temporal Distribution of Recurrent Cholera Outbreak in Zambia.
Abstract: Background: Cholera cases in Zambia have been observed over a period without understanding the epidemiological cycles. The aim of the study was to evaluate the temporal distribution of recurrent cholera outbreak in Zambia from 1977 to 2019. Methods: Cholera case records of both sex and all ages were retrospectively analyzed. The primary source documents were reviewed including infectious diseases line list, notifiable diseases reports, Health Impact Assessment, District Health Impact …
Published in Recent Trends in Infectious Diseases · Vol. 2, Issue 1, 2025 · pp. 10–21 Read article
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Failure Analysis of Bearing: A Review
Abstract: Ball and rolling element bearings are perhaps the most widely used components in industrial machinery. They are used to support load and allow relative motion inherent in the mechanisms involved, preventive measures and recommended corrections to enhance the life of the bearing. In this paper, the most widely referred mechanisms are reviewed and discussed, and their limitations are addressed. Heat flows within a bearing, scanning electron microscope (SEM), Fourier infrared …
Published in Trends in Machine design · Vol. 3, Issue 3, 2016 · pp. 43–59 Read article
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ECG De-noising Techniques and Optimal Feature Selection Using Principle Component Analysis
Abstract: AbstractECG (Electrocardiography) is used to record and determine the condition of the heart. This paper provides an overview of various ECG de-noising techniques that are used to eliminate different type of noises; therefore, noise reduction procedure to be performed to eliminate different type of noises such as baseline wander, dc offset and high frequency interference, and then the pre-processed signal is used to extract features from the ECG signal. This …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 5, Issue 1, 2018 · pp. 14–20 Read article