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868 articles for “Rating systems”
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Prevalence of Mucocutaneous Manifestation and Associated Factors Among Adult HIV Positive Patients Attending Art Clinic in Mekelle Zonal Hospital
Abstract: Mucocutaneous disorders are among the first recognized clinical manifestation of HIV/AIDS and they help as a visual marker in assessing the progression of HIV/AIDS. More than 90% of HIV-positive patients may develop mucocutaneous problems at one stage of the disease or the other with significant morbidity and mortality and the magnitude of mucocutaneous manifestation is not known in Mekelle. The objective of this study was to determine the magnitude and …
Published in Research and Reviews : A Journal of Medical Science and Technology · Vol. 4, Issue 2, 2015 · pp. 21–30 Read article
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SAFETY CLIMATE AND SAFETY SYSTEMS FACTORS AND THEIR RELATIONSHIP WITH ORGANISATIONAL ATTRIBUTES AND DEMOGRAPHIC CHARACTERISTICS OF EMPLOYEES IN MAJOR ACCIDENT HAZARDOUS INDUSTRIES IN KARNATAKA STATE, INDIA
Abstract: The present work evaluates the existing critical safety climate and safety system components in the Major Hazardous Industries in Karnataka state, India and establishes the quantitative relationship between them with the organisational and demographic characteristics using a Questionnaire method (containing 81 questions of various safety climate parameters and 53 questions of various safety engineering system parameters among 1029 employees in 22 major hazardous industries in Karnataka). A research instrument using …
Published in Journal of Industrial Safety Engineering · Vol. 6, Issue 1, 2019 · pp. 20–35 Read article
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Effect of Crosstalk of a Proposed Optical Cross-Connect Topology in OXC Switched WDM Networks
Abstract: ABSTRACTThis paper presents an optical wavelength division multiplexed cross-connect topology, which is modified form of the existing optical cross-connect (OXC) topologies. An analytical approach is developed for the proposed topology to explore the effect of crosstalk induced in multichannel WDM networks due to OXC. Factors that affect the magnitude of crosstalk in the OXC are investigated and different parameters are optimized to reduce the total OXC-induced crosstalk. The crosstalk performance …
Published in Trends in Opto-electro & Optical Communication · Vol. 1, Issue 1-3, 2011 · pp. 8–15 Read article
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An Innovational Approach for Estimation of Reliability Indices Accounting Repair Time of Hose Reel System-Safety Empirical Outlook
Abstract: Numerous reliability indices estimation of a system or component or element is very important in order to predict its availability and unavailability. Reliability is the specification which tells about the availability of the system under proper working conditions for a given period of time. Reliability of numerous complex engineering systems has been estimated in literature. In view of above, in this paper an innovational approach for estimation of various reliability …
Published in Journal of Control & Instrumentation · Vol. 12, Issue 3, 2021 · pp. 12–18 Read article
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Pipeline Integrity Optimal Maintenance Techniques and Its Reliability
Abstract: This study is aimed at determining the optimal maintenance model for utilizing both preventive and corrective costs control system. It was assumed that operating conditions and pipeline diameters were uniform following the cumulated results and computational analysis. The research included an estimation which shows that the average cost for the installation and of course the maintenance of a healthy and operational pipeline is within $1,989,992 per km. Considering the failure …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 9, Issue 1, 2022 · pp. 23–29 Read article
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Performance Analysis of Regenerator of Liquid Desiccant Air Conditioning System
Abstract: LDAC systems have been a keen topic of research in the area of dehumidification of air and various researchers and studies have shown that LDAC system is an economical and eco-friendly way for moisture removal as compared to conventional systems. Various researches have been done on dehumidifiers and regenerators in order to enhance their performances and to overcome problems like a carryover of desiccant in direct contact type ones. In …
Published in Trends in Mechanical Engineering & Technology · Vol. 8, Issue 1, 2018 · pp. 21–25 Read article
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Smart Wearable Health Pendant Using IoT and Machine Learning for Heart Rate Monitoring and Detecting Falls
Abstract: Cardiovascular illnesses and accidental falls frequently occur among individuals and at-risk populations. This is the reason we genuinely require a device that can monitor their well-being continuously. We are referring to a health pendant designed for seniors and groups at risk can wear. This health pendant leverages Internet of Things technology and machine learning to monitor heart rate and identify falls. Our health pendant system incorporates an ESP32 microcontroller, a …
Published in Journal of Instrumentation Technology & Innovations · Vol. 16, Issue 2, 2026 Read article
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IoT-Based Healthcare Monitoring for COVID-19 Home Quarantined Patients
Abstract: 4–5 days after a person contracts the COVID virus, symptoms typically start to show. It's possible for some people's symptoms to go undetected for up to two weeks. Fever, lightheadedness, headaches, dyspnea, dry coughs that eventually produce phlegm, and in rare instances, loss of taste and smell are the predominant symptoms of COVID 19 infection. Rashes and other skin issues have sporadically been reported. One example is the reddish-purple spots …
Published in Recent Trends in Sensor Research & Technology · Vol. 9, Issue 3, 2022 · pp. 26–31 Read article
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Advance Surveillance System Integrated with Weapon Detection and Accident Detection
Abstract: Security concerns have become paramount as there is rise in crime rates in crowded events and isolated areas. Abnormal event detection and monitoring system, utilizing computer vision, are crucial for tackling these challenges. In parallel, reducing mortality rates from accidents by ensuring timely emergency response in essential. This study presents the implementation of automatic weapon detection and accident detection. In weapon detection, YOLO v4, Convolutional Neural Networks (CNN), and Faster …
Published in Research & Reviews: A Journal of Embedded System & Applications · Vol. 13, Issue 1, 2025 · pp. 47–54 Read article
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MODELING AND SIMULATION OF LEGIONELLA TRANSPORT INFLUENCED BY HETEROGENEOUS VELOCITY IN STREAM
Abstract: The purpose of this study is to monitor the behaviour of legionella contaminant in stream, the rate of concentration at different monitoring station developed various rate of effect on the water bodies, heterogeneous velocity of flow in the stream was observed as the major sourced of change in concentration at different stations, the expression from the system developed the derived solution to evaluated the behaviour of the contaminant at different …
Published in Journal of Water Resource Engineering and Management · Vol. 6, Issue 2, 2019 · pp. 29–35 Read article
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Analysis of M-MRC Receiver over Nakagami-m Fading Channels using Wireless Information and Power Transfer System
Abstract: AbstractThe expression for the performance of Outage probability and Average bit-error rate (ABER), have been presented in this paper, considering an arbitrary branch Maximal Ratio Combining (MRC) Receiver, over Nakagami-m Fading Channels using simultaneous wireless information and power transfer (SWIPT). For the SWIPT system, a Power splitter (PS) at the receiver side has been employed, which splits the received signal into the information transmitter and the energy harvesting parts. A …
Published in Journal of Communication Engineering & Systems · Vol. 9, Issue 1, 2019 · pp. 49–54 Read article
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Design and Development of an Electromagnetic Propulsion Train
Abstract: The recent advancement of new transportation techniques led to the search for methods of propulsion that were superior to classical mechanical systems. Among these new moments, electromagnetic propulsion (EMP) has attracted attention because this technique allows for motion generation via electromagnetic force without using conventional wheel-based friction processing. The paper describes the conceptual design, principle of working and performance evaluation of a prototype model train to be propelled electromagnetically.The system, …
Published in Trends in Mechanical Engineering & Technology · Vol. 15, Issue 3, 2025 · pp. 19–24 Read article
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BER Performance Analysis for Digital Modulation Techniques in AWGN Channel of FSO Communication System with Low Attenuation Coefficient
Abstract: BER is a potential methodology for examining digital transmission systems by providing a measurable and useful indication of system performance. If the BER rises within limit then the system performance will be obviously satisfactory. The paper represents BER performance of FSO communication system for a few number of digital modulation techniques: BPSK, QPSK, 4-QAM and 16-QAM in AWGN channel by exploiting the Matlab simulated BER versus SNR graphs. The numerical …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 1, Issue 3, 2014 · pp. 12–19 Read article
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Analysis of M-ary Signaling for Weak Turbulence Regime in FSO Communication System
Abstract: Abstract: The need for high data rate LOS communication is accomplished using the Free Space Optical communication. Being a very cost-effective approach, it contributes to the easy set-up and deployment of point to point terrestrial link. It transmits the light signal in free space channel (air, vacuum etc.) using LASERs or LEDs and received via photodetector. In this paper, the channel is modelled using Lognormal turbulence model. This channel model …
Published in Trends in Opto-electro & Optical Communication · Vol. 9, Issue 1, 2019 · pp. 24–31 Read article
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Skin Cancer Detection System Based on Machine Learning for Recognition of Cancerous Images
Abstract: Skin cancer ranks among the most prevalent types of cancer globally and poses significant risks when left untreated. Skin cancer arises when abnormal cells proliferate uncontrollably in the skin. This uncontrolled growth can be triggered by genetic mutations, exposure to ultraviolet (UV) radiation from the sun or artificial sources like tanning beds, or various other factors. In this, the early detection of cancer plays a crucial role in treatment and …
Published in Research and Reviews: A Journal of Medicine · Vol. 14, Issue 2, 2024 · pp. 1–8 Read article
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Analysis of Three Phase AC-DC Front End Converter with Vector Control
Abstract: The revolution in power electronics has opened in last few years widespread use of power converters of different power rating from few Watts to Mega-Watts. 3 phase AC-DC converters (Controlled rectifier) are most widely used power converters as the distributed electric power is AC supply, while the applications based on DC supply as well as variable frequency AC supply, need conversion of AC supply into DC supply. Large current harmonics …
Published in Journal of VLSI Design Tools and Technology · Vol. 11, Issue 3, 2021 · pp. 19–30 Read article
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Studies on Oil Extraction from Pongamia Seeds using Mechanical Expeller and Microwave Heating Technique
Abstract: The extraction of oil from seeds is carried out traditionally by using mechanical expeller. In this study, four configurations of oil extraction systems, namely, single screw, modified single screw, twin screw and microwave assisted oil extraction have been evaluated for oil yield and production or through put rate. Pongamia pinnata seeds have been used as the reference raw materials for this study, both in whole seed form and in crushed …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 7, Issue 3, 2016 · pp. 7–14 Read article
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A Novel Approach of Sensorless Control of BLDC Motor with Z-Source Inverter
Abstract: Brushless dc motors are getting more attention in many areas owing to its compactness, maintenance, high efficiency and low cost. Precise detection of rotor position is essential to achieve high efficiency. Back EMF method is one of the most popular control methods for sensorless brushless dc motor. But this method is not suitable for high-speed operation, for the pulse width of zero-vector may be very short. This paper proposes an …
Published in Journal of Power Electronics and Power Systems · Vol. 8, Issue 3, 2018 · pp. 9–16 Read article
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Performance Analysis of DWT Based OFDM System using SRRC Filter in Mobile Wimax over Fading Environment
Abstract: AbstractWavelets amid its capability to provide simultaneous information in both time and frequency domain, along with minimization of interference and improved bandwidth efficiency, is considered broadly as an efficient approach to replace fast Fourier transform (FFT) in the conventional orthogonal frequency division multiplexing (OFDM) systems. Efficient filter pulses are employed spectrally in such systems in order to mitigate the effect of inter-symbol interference (ISI) as well as satisfy the bandwidth …
Published in Journal of Communication Engineering & Systems · Vol. 7, Issue 1, 2017 · pp. 1–10 Read article
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Issues and Challenges for Computing in Embedded System
Abstract: The reliability of any software system is very important for us. As we continue the process of error detection and error correction on the software system, the reliability of the software keeps on increasing. So, for modeling this growth in the reliability of any system, many formulations in the form of Software Reliability Growth Models has been proposed. Among these approaches, maximum approaches are based on NHPP. In this paper, …
Published in Research & Reviews: A Journal of Embedded System & Applications · Vol. 6, Issue 2, 2018 · pp. 18–21 Read article