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704 articles for “transmissivity”
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Cloud based automation system
Abstract: The overall design of a cheap, wireless cloud automation system is demonstrated in this project. The automation system based on Internet of Things (IoT) is proposed in this project. It makes this work capable of controlling more than one devices over the internet. A smart control firmware is evolved out of this work which accomplishes the mechanized performance of each connected device. The control commands given by operating personnel are …
Published in Trends in Electrical Engineering · Vol. 13, Issue 1, 2023 · pp. 12–20 Read article
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Transient Stability Analysis of Power Systems with Static VAR Compensator: A Modeling Perspective
Abstract: Flexible AC Transmission Systems (FACTS) controllers have emerged as a vital tool to overcome the compensation challenges offered by modern power systems. Static Var Compensator (SVC), a type of FACTS controller plays a very important role in enhancing the power system performance, reactive power factor, maintain voltage stability. A thorough review and implementation of SVC with its various configurations is presented in this paper. Performance analyses of SVC and associated …
Published in Trends in Electrical Engineering · Vol. 13, Issue 3, 2023 · pp. 33–47 Read article
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Study of Multiple-Input Multiple-Output DC-DC Converter for DC Microgrid Applications
Abstract: DC microgrids have been developed because of the integration of renewable energy sources and the rising demand for sustainable energy solutions. DC microgrids offer numerous advantages such as increased efficiency, reduced transmission losses, and enhanced reliability. However, the varying output characteristics of renewable sources and the dynamic nature of loads within a microgrid necessitate efficient power management systems. In order to overcome these difficulties, MIMO (Multiple-Input Multiple-Output) DC-DC converters have …
Published in Trends in Electrical Engineering · Vol. 13, Issue 3, 2023 · pp. 16–23 Read article
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Design of Gear Tooth Rounding and Chamfering Machine
Abstract: All movable gears which mesh with another gear require either rounding or chamfering. The operation is generally applied to the teeth of spur gears for use in sliding gear transmission of automotive vehicles and machine tool Gear boxes where the gears are moved on their longitudinal axes meshing with another spur gear. In current scenario the mechanically operated machines require lot of settings, which is time consuming and requires one …
Published in Trends in Machine design · Vol. 4, Issue 3, 2017 · pp. 38–44 Read article
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Automated Beach Cleaner
Abstract: Researches on marine particles have substantially accelerated our knowledge of the extent and composition of marine particles as well as its influences on the marine environment, aquatic life and people. Marine particles are very hazardous to marine organisms which include plants, invertebrates, fish, seabirds, sea turtles and particularly large marine mammals. Marine particles lift plastic liters that are composed of commercial chemicals or toxins. These chemical compounds may be adverse …
Published in Trends in Machine design · Vol. 8, Issue 2, 2021 · pp. 40–46 Read article
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A Review on Increases the Heat Transfer Rate of the Solar Air Heater by Adding the Fins in the Absorber Plate
Abstract: Solar air heaters are extensively utilised in a diverse range of domestic and industrial settings. The need to enhance the thermal efficiency of solar air heaters has prompted researchers to concentrate on enhancing the thermal performance through the implementation of artificial flow modification techniques in the flow field. Consequently, the presence of this phenomenon will disrupt the laminar sublayer located beneath the absorber plate, so contributing to an elevation in …
Published in Trends in Machine design · Vol. 10, Issue 3, 2023 · pp. 8–16 Read article
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Modelling of Peer to Peer Sharing of Power within Solar Based DC Microgrids
Abstract: Solar based DC microgrids and home-based systems have been a reliable option to solve rural electrification problems in many parts of the world. However, there is a pertaining problem of mismatch between local demand and on-site generation in such microgrids. Proposed work attempts to address this problem by developing an optimal peer-to-peer (P2P) energy sharing among the individual households in a DC microgrid. A nonlinear optimization problem is formulated that …
Published in Trends in Mechanical Engineering & Technology · Vol. 8, Issue 3, 2018 · pp. 44–48 Read article
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A Preliminary Study of Solar Bicycle using Crank-Lever Mechanism
Abstract: There are many types of bicycle in the world such as normal bicycle that people need topaddle for it to move and electricbicycle that can only be sufficient for an hour. Chain drive power transmission have some disadvantages will motivate the direct drive for bicycle. The idea of a solar bicycle without chain drive came in mind. The idea is to make thebicycle last longer and can be automatically recharge …
Published in Trends in Mechanical Engineering & Technology · Vol. 10, Issue 2, 2020 · pp. 19–24 Read article
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Harnessing Hydropower Energy Devices for Nigerian Water Bodies
Abstract: Energy consumption in Nigeria is relatively high requiring alternative sources of power generation. In order to achieve a sustainable and renewable and cheap energy production, a decentralized energy generation is the clue as long distance transmission of this energy has proven to be unstable. A closer look on Nigeria’s hydrological map suggests the inclusion of the lower river basins into the energy generation plan. This makes the construction of a …
Published in Trends in Mechanical Engineering & Technology · Vol. 13, Issue 2, 2023 · pp. 45–73 Read article
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Study of Multiple Input Multiple Output Free Space Optical Terrestrial Link
Abstract: AbstractAtmospheric turbulence causes mitigation in the performance of the Free Space Optical Link (FSO) transmission. The performance changes due to scintillation. To reduce the effect of scintillation, we have employed a Multiple Input Multiple Output (MIMO) FSO link which gives better performance as compared to Single Input Single Output (SISO) FSO link. We have combined the detector output with different combining techniques i.e. Selection Combining (SC), Equal Gain Combining (EGC) …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 1, 2018 · pp. 25–29 Read article
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Performance Comparison of FBG as Dispersion Compensator with Different Apodization in an Optical Fiber Link
Abstract: AbstractNowadays, optical communication is a popular technique to transmit the data. In daily life, we share our useful data by using optical network but dispersion is the main performance limiting factor. However, the compensation of dispersion by dispersion compensating fiber (DCF) and fiber Bragg grating (FBG) can boost the system significantly. This proposed work investigates and analyzes the performance of optical transmission system at 1550 nm using FBG as dispersion …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 2, 2018 · pp. 6–12 Read article
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Reliability Modeling, Performance and Cost-Benefit Analysis of Optical Fiber Network in DCRUST
Abstract: AbstractThis paper includes the survey of optical fiber network in DCRUST and its reliability modeling aspects to evaluate reliability of that optical fiber network. Model in this paper has an operative unit which is optical fiber cable and a hotstandby unit which is an optical fiber ring provided as a redundant fiber in DCRUST. This protection path is necessary in optical fiber to reduce the wastage of time and to …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 1, 2018 · pp. 8–15 Read article
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A Study on Different Optical OFDM using VLC System
Abstract: AbstractThe main goal of the paper is to preview the work that has already been carried out associated with optical OFDM in the VLC system. Different optical OFDM techniques such as direct-current biased optical OFDM (DCO-OFDM), asymmetrical clipped optical ofdm (ACO-OFDM) and many others are discussed. Nowadays, in conversation systems Visible Light Communication (VLC) plays a major role in the communication field. In the present paper, an overview on transmission …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 2, 2018 · pp. 13–19 Read article
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Implementation of Optical XOR Gate and Gray to Binary Code Converter Using Mach-Zehnder Interferometer
Abstract: AbstractWith the progress in optical communication system, optical networks are demanding of all optical devices to improve the speed, power and to reduce the attenuation during transmission of signals. In this paper, execution of gray to binary code converter with the aid of semiconductor optical amplifier (SOA) based Mach-Zehnder interferometer (MZI) is proposed, with the help of all-optical XOR logic gate, which is also demonstrated by using SOA-MZI, where CW …
Published in Trends in Opto-electro & Optical Communication · Vol. 7, Issue 1, 2017 · pp. 1–5 Read article
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Optical Characteristics of Amorphous Se-Ge-Ag Thin Films
Abstract: AbstractDetailed studies on impurity dependence of the optical structural properties have been carried out on Se-Ge-Ag thin film samples prepared by thermal evaporation technique. The effect of the addition of varying amounts of silver in concentrations from 5 to 15 molar percent to Se-Ge system were analyzed systematically under the room temperature. The optical transmission and reflection spectra of these films were measured in the range of 300–900 nm. The …
Published in Trends in Opto-electro & Optical Communication · Vol. 6, Issue 3, 2016 · pp. 33–38 Read article
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BER Performance of Hybrid 2×8 SCM/WDM System Based on Raman Amplifier
Abstract: AbstractWhen subcarrier multiplexing (SCM) is combined with wavelength division multiplexing (WDM) the resultant hybrid multiplexing strategy can benefit from readily available commercial components. Hybrid SCM/WDM systems are quite useful for LAN and MAN applications. They can provide broadband integrated services to the subscriber. This paper investigates the performance of two module SCM transmitter that consist of eight binary phase shift keying modulated data streams each transmitted at a speed of …
Published in Trends in Opto-electro & Optical Communication · Vol. 6, Issue 1, 2016 · pp. 1–7 Read article
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Performance Study in Modified DPSK, MZI Delay Mismatch at 40Gbps Fiber Dispersive Channel
Abstract: AbstractHigher data rate transmission is a desirable feature for the communication system in every era. As they have potentially higher fiber capacity, also have lower cost per bit. This paper presents performance investigation with partial differential phase shift keying and influence of MZI delay mismatch in the high data rate dispersive channels. Ideal fiber braggs grating is considered as fiber dispersive medium with different dispersion. Numerical simulation depicts that in …
Published in Trends in Opto-electro & Optical Communication · Vol. 6, Issue 2, 2016 · pp. 18–23 Read article
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Comparative Study on Red Tacton with Other Technologies
Abstract: AbstractRed tacton is a communication between the object and the human. This technology is easy to use services and it activates the communication. This paper describes about the networking through touching in the human body for the transmission of the data. This networking technology was developed by Robin Gaur Jind, he described that the body of the human with safe and speed. The red tacton is a chip which is …
Published in Trends in Opto-electro & Optical Communication · Vol. 6, Issue 2, 2016 · pp. 30–34 Read article
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Synchronous Networking SONET and SDH
Abstract: AbstractIncreasing demand for communications capacity has led to the introduction various data transmission techniques in terms of packet transfer of large capacity. This document is an outline of what SONET is and how it operates. Again it describes also the difference between SONET and SDH technique. Both the techniques are based on synchronous data transferring. Information is sent through an optical fiber by switching light off and on in the …
Published in Trends in Opto-electro & Optical Communication · Vol. 5, Issue 3, 2015 · pp. 33–38 Read article
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Comparative Analysis of Power Penalty versus Crosstalk in Optical Active Network Components like Erbium Doped Fiber Amplifier, Raman Amplifier and Semiconductor Optical Amplifier
Abstract: AbstractOptical amplifiers boost the power of optical system without optoelectronics (O-E-O) conversion. The optical amplification process is accompanied by Amplified Spontaneous Emission (ASE) noise that accumulates along the transmission line and degrades the optical signal to noise ratio (OSNR). Intensity modulation in one channel causes crosstalk in the other channel via the change of the complex refractive index in the amplifier. In this paper, authors tried to calculate and compare …
Published in Trends in Opto-electro & Optical Communication · Vol. 3, Issue 1, 2013 · pp. 1–10 Read article