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1475 articles for “Performance”
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Performance Enhancement of Mobile WiMAX using TimeFrequency Training OFDM Scheme
Abstract: ABSTRACT Mobile WiMAX, IEEE 802.16 m is a Wireless Metropolitan Area Network offering a mobile broadband internet service. It uses cyclic prefix OFDMA (CP-OFDMA) as a multiple access scheme. CP-OFDMA embeds a large number of pilot subcarriers in OFDMA symbol for channel estimation purpose, reducing the data rate and spectral efficiency of mobile WiMAX system. This paper suggests the application of time-frequency training OFDM (TFT –OFDM) as a modulation and …
Published in International Journal of Telecommunications & Emerging Technologies · Vol. 6, Issue 1, 2020 · pp. 20–31 Read article
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Study and Implementation of High Performance Energy Harvester using Aerosol Deposition Method.
Abstract: This paper reports the high-performance piezoelectric energy harvester (EH) fabricated with PbxZr1-xTiO3 (PZT) or xPb(Mg1/3Nb2/3)-(1-x)PbTiO3 (PMN-PT) by aerosol deposition method. The other EH with the same construction and similar thickness of PZT thin film are fabricated and used as a comparison basis. The electrical and mechanical properties of both transducers are characterized and discussed. According to our previous work [1], the output power of a EH not only depends on …
Published in International Journal of Energetic Materials · Vol. 4, Issue 2, 2018 · pp. 28–33 Read article
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DIFFERENT METHODOLOGIES USED FOR PERFORMANCE ANALYSIS OF ORGANIC LIGHT EMITTING DIODE
Abstract: Organic Light Emitting Diode (OLED) is a Solid state lighting devices, the charge transporters must be infused from the anode and cathode yet the execution, lifetime, effectiveness and solidness of these devices are normally administered by the correct thickness of the material layers and terminal/organic interfaces at the anode contacts. This study we exhibit the approach using different thickness and doping of the material in Organic Light Emitting Diode. We …
Published in International Journal of Metallurgy and Alloys · Vol. 5, Issue 1, 2019 · pp. 20–25 Read article
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Performance of High Volume Fly Ash Concrete Using Local Power Plant Fly Ash
Abstract: Total production of fly ash in Indian Thermal Power plants is approximately 160 million tons annually. Except some super power plants, the quality of fly ash is said to be inferior in most of the power plants. The suitability of fly ash from local power plants for production of high volume fly ash (HVFA) concrete is not tested so far. The aim of the present investigation is to ascertain whether …
Published in International Journal of Composite and Constituent Materials · Vol. 1, Issue 1, 2015 · pp. 07–13 Read article
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Enhancement of Power Factor and Effective Performance of an Induction Motor Based Converter-Fed Rotor
Abstract: Abstract— Taking a novel concept of a rotor that is fed by a converter, this paper attempts to investigate an induction machine. In this the stator has been directly connected to the grid and it is also Y connected while the rotor windings are open-ended fed to a back-to-back converter with a floating capacitor. The factors that are carefully studied are the power factor and the efficiency improvements of the …
Published in International Journal of Polymer Science and Engineering · Vol. 4, Issue 1, 2018 · pp. 10–19 Read article
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Design and Performance Testing of Brown Grass Flower Broom Reinforced Composites
Abstract: Engineering materials are classified into many varies and composites are those which are finding their role in all modern day engineering applications. Composite materials are materials made of two basic components, polymer resins and fibers. It combines the physical properties and high mechanical properties of the fiber, as well as the appearance, adhesion and performance of the polymer. Here, we prefer brown grass flower brooms as our main fiber to …
Published in International Journal of Mechanics and Design · Vol. 6, Issue 2, 2020 · pp. 34–37 Read article
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Minimal Reduction of Fuel Consumption and Pollution with the Performing a New Design of Flat Engines by Simulation
Abstract: The automotive engine is one of the most important performance of the automotive today and has the task of transmitting power to the gearbox. That is why the world’s largest automotive companies are trying to produce engines that have the maximum power and the lowest fuel consumption. In this article, a motor design with a different appearance was presented. If we want to attribute the design of this engine to …
Published in International Journal of Mechanics and Design · Vol. 7, Issue 1, 2021 · pp. 17–21 Read article
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Experimental Investigations for Comparing the Effectiveness of Heat Treatment and Cryogenic Treatment on Wear Performance of EN-47 Spring Steel
Abstract: EN-47 spring steel is chromium, vanadium steel which consists of carbon (0.45–0.55%), manganese (0.50–0.80), silicon (0.50%), phosphorus (0.06%), and sulphur (0.06%) along with chromium (0.80–1.20%) and vanadium (0.15%). Due to this composition EN-47 spring steel become harder and tougher. It has a wide range of applications like crankshafts, steering knuckles, gears, spindles, pumps, suspension etc. So, in this experimental study we treated EN-47 spring steel with cryogenic treatment, cryogenic and …
Published in International Journal of Manufacturing and Materials Processing · Vol. 9, Issue 2, 2023 · pp. 1–9 Read article
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A Computational Study of Solar Air Heater for Its Performance Enhancement by Numerical Approach Using Standard CFD Tools
Abstract: In the following report, the main objective is to calculate the efficiency of the solar air heater, mean exit temperature of air using CFD (Computational Fluid Dynamics) simulation. CFD software promises to be a futuristic field of application especially in the field of thermal engineering. The analysis is performed on a two dimensional built solar air heater. The geometry modelling is done in “Gambit” software followed by its analysis for …
Published in International Journal of Computer Aided Manufacturing · Vol. 1, Issue 2, 2016 · pp. 21–27 Read article
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A Review on Performance Analysis of CMOS Inverter
Abstract: In this paper, first we study the various inverter circuits and analyze its performance in terms of noise margin, area, power dissipation and computational delay. After that analyze the various parameter of CMOS Inverter circuit using Pyxis schematic tools of Mentor graphics with TSMC 018 CMOS process technology. Based on this simulation, analyze the rise time, fall time and dynamic power dissipation of CMOS inverter. Finally, we got the good …
Published in International Journal of Computer Aided Manufacturing · Vol. 5, Issue 1, 2019 · pp. 29–35 Read article
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Effect of Various Parameters on Engine Performance and Emissions for a Single Cylinder VCR Diesel Engine
Abstract: Diesel Engines are playing crucial role in field of automobile in current scenario. In Present world there are so many research works are going on in the field of renewable energy sources to replace conventional sources. Variable Compression Ratio (VCR) Engine provides facility to change engine parameters to optimize the power output and the emissions. From experimental Investigation it is clear that the better performance is obtained at 18.5 CR …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 1, Issue 2, 2015 · pp. 26–31 Read article
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Review on Effect of Exhaust Gas Recirculation (EGR) on Performance of Compression Ignition (CI) Engine and Homogeneous Charge Compression Ignition (HCCI) Engine
Abstract: Energy conservation is a trending topic in the world. But only saving energy is not the primary aim, there is a need for clean and efficient source of energy to reduce the pollution. Compression ignition engine is the preferred prime movers due to excellent drivability and higher thermal efficiency. Even though it has many advantages, it also has major drawbacks as it produces higher level of NOx and smoke emissions …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 5, Issue 2, 2019 · pp. 11–20 Read article
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A study on effects of mass flow rate and compressor pressure ratio on gas turbine cycle performance
Abstract: Gas turbines are rotating machines that work based on the energy of gases from combustion. Each gas turbine includes a compressor to compress air, a combustion chamber to mix air with fuel and ignite it, and a turbine to convert the energy of the hot, compressed gases into mechanical energy. Gas turbines have many advantages over steam turbines, such as small volume, quick installation, quick start-up, easy operation and the …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 8, Issue 2, 2022 · pp. 1–8 Read article
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Modified Design Improvement Study and Optimization of a intake Manifold to Obtain Unequal Distribution of Velocity for Optimal Diesel Engine Performance
Abstract: Geometrical design of intake manifold has been found very significant for the better performance of an I.C. Engine. It becomes less effective at the intake manifold's runner's outlets due to an uneven flow distribution of the intake air. With an increase in velocity at the distribution channels, the presented study seeks to make this uneven velocity distribution nearly equal without requiring any additional significant changes to the entrance manifold's construction. …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 9, Issue 1, 2023 · pp. 13–23 Read article
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Production of Composite Biodiesel from Pongamia & Simarouba oil and Comparison of Performance of Composite Biodiesel with Diesel
Abstract: Pongamia oil and simarouba oil are mixed in equal volume to prepare the composite oil. The composite oil is processed through two stage transesterification process to produce composite biodiesel. The composite biodiesel blends are prepared by mixing neat biodiesel with diesel by 5%, 10% and 20% volume respectively. The engine control factors viz., injection pressure, injection timing and fuel preheating temperature are considered for evaluating the performance of composite biodiesel …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 9, Issue 2, 2023 · pp. 1–9 Read article
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Study of Analysis, Design and Performance of Fin
Abstract: This paper discusses the use of extended surface heat transfer in heat exchangers. The size and cost of an exchanger is dependent upon the heat duty, the allowable pressure drop, and the geometry of the heat transfer area. The dominance of this resistance is often broken by the use of extended surfaces (fins), which will result in a lower area and hence smaller exchanger. This paper will consider which, if …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 3, Issue 2, 2017 · pp. 23–28 Read article
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A Review on Comparative Study on Performance of Vertical Cantilever Tuned Mass Damper and Base Isolators in Response Reduction of Multistory Building
Abstract: The present work concerned with the study on the comparison of performance of vertical cantilever beam as tuned mass damper (TMD) and the base isolator in high-rise RCC structure. The vertical TMD will be at the top floor at the position of interior columns and the mass of the TMD will be tuned with the primary structure. The base isolator like sliding bearing system will be designed for a multistory …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 5, Issue 1, 2019 · pp. 14–19 Read article
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Dynamic Matrix Control Versus Nonlinear ModelPredictive Control for the Van de Vusse ContinuousStirred-Tank Reactor: Diagnosing and Correcting aCost-Function Pathology That Masked NMPC’sTrue Performance
Abstract: The Van de Vusse reaction in a continuous stirred-tank reactor (CSTR) is a benchmark for nonlinear multivariable control, but its narrow operating envelope creates a trap for nonlinear model predictive control (NMPC): when the setpoint step is small relative to the plant’s reachable range, a standard quadratic NMPC cost function can make zero control action mathematically optimal, even with a perfect prediction model. This paper documents that failure mode, traces …
Published in International Journal of Chemical Separation Technology · Vol. 12, Issue 2, 2026 · pp. 55–66 Read article
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Interfacial Engineering and Performance Optimization of Jute-Fiber-Reinforced Epoxy Laminates
Abstract: The increasing environmental concerns associated with synthetic fiber reinforced polymer composites have driven substantial research interest toward naturally derived, biodegradable fiber alternatives. This study presents a comprehensive mechanical and thermal characterization of jute fiber reinforced epoxy composites fabricated via hand lay-up followed by compression molding. Jute fibers were subjected to alkali treatment using 5 wt% sodium hydroxide (NaOH) solution for 4 hours at ambient temperature to enhance fiber–matrix interfacial bonding …
Published in International Journal of Polymer Science and Engineering · Vol. 12, Issue 1, 2026 · pp. 52–64 Read article
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Modern Molecular Breeding Approaches in Apiaceae for Enhanced Agronomic Performance
Abstract: The Apiaceae family, including economically vital crops like dill, coriander, and fennel, faces significant productivity constraints due to narrow genetic diversity and slow conventional breeding. This study presents a robust molecular breeding framework integrating RAPD and SSR markers to accelerate genetic improvement. Five diverse germplasm accessions were evaluated across morphological, biochemical, and molecular parameters. Molecular analysis revealed substantial polymorphism, with SSR markers demonstrating high informativeness (average PIC = 0.73). Notably, …
Published in International Journal of Plant Biotechnology · Vol. 12, Issue 2, 2026 · pp. 19–36 Read article