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1044 articles for “lay-up”
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Design and Implementation of Low Power 8-bit Level Crossing ADC
Abstract: Implantable medical devices, electronic gadgets, wireless communication elements and many other such applications require low power electronic circuits. Analog to digital converters are essential part of most of such circuits. This paper presents a design of the level crossing analog to digital converter (LC-ADC) architecture. The proposed circuit and layout has been implemented in semi-conductor laboratory (SCL) 180 nm technology and its performance was evaluated using cadence virtuoso at supply …
Published in Journal of VLSI Design Tools and Technology · Vol. 6, Issue 2, 2016 · pp. 33–43 Read article
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An Overview of the Contemporary GSM system in Digital world
Abstract: This undertaking is geared toward the layout and implementation of the continued studies onthe M2M wi-fi communique of diverse machines and gadgets in cellular networks is a fast-growing business and application location in the enterprise, maintenance enterprise,customer service, safety, and banking areas. This assignment presents the layout andimplementation of a far flung manipulate system by using the GSM cell verbal exchangenetwork. The design integrates the tool to be managed, the …
Published in Journal of VLSI Design Tools and Technology · Vol. 10, Issue 1, 2020 · pp. 1–6 Read article
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An Analytical Model for Sub grid Force-Equilibrium Approach in Submerged Vegetative Channel
Abstract: A new, analytical model of the vertical flow velocity profile of submerged vegetation has been developed. Velocity profile can be divided into three zones: linear zone which is closed to bed with linear velocitydistribution, logarithmic zone which involves the main channel without vegetative cover and the middle zone (transition zone) that is affected by the momentum of upper zone. For the surface layer, Prandtl’s mixing lengthconcept is adopted resulting in …
Published in Recent Trends in Civil Engineering & Technology · Vol. 1, Issue 1-3, 2011 · pp. 1–7 Read article
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Exploring Lightweight and Earthquake-resistant Construction with Ferrocement Sandwich Panels
Abstract: The creation of sandwich panels made of ferrocement as non-load-bearing building components is examined in this study. The sandwich panels had one layer of wire mesh netting between two thin pieces of ferrocement for reinforcement. Two thin ferrocement layers strengthened with a thermocol sheet made up the sandwich sections. The two iron lattice sections were connected by steel wires. Three sandwich panels in total were made. Compared to traditional masonry …
Published in Recent Trends in Civil Engineering & Technology · Vol. 13, Issue 1, 2023 · pp. 1–6 Read article
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Analysis of Pull-in Voltage with Respect to Changes in Dielectric Material and their Thickness
Abstract: Micro Electromechanical Systems (MEMS) actuators experience pull-in effect in their actuation range. MEMS actuating elements are thin parallel plate capacitor electrodes separated with air gap. Parallel plate electrostatic micro actuators are known to have the pull-in effect, where electrostatic attractive force exceeds the mechanical restoring force of the suspending spring, and that the movable plate spontaneously pulled into physical contact with the opposite electrode. In our model the effect of …
Published in Recent Trends in Electronics Communication Systems · Vol. 2, Issue 1, 2015 · pp. 1–5 Read article
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Simple Gain Model of Group III-V Semiconductor-based Laser Diode
Abstract: In these days, a layer of low bandgap material is sandwiched between two high bandgap layers.Most commonly-used pair of materials is gallium arsenide (GaAs) with aluminium galliumarsenide (AlGaAs) and Indium Phosphide (InP) with Indium gallium arsenide phosphide(InGaAsP) laser. A heterostructure is the junctions between different bandgap materials. Here,two such junctions are present, hence it is called the name "double heterostructure laser" orDH laser. The kind of laser diode may be …
Published in Recent Trends in Electronics Communication Systems · Vol. 7, Issue 3, 2020 · pp. 9–27 Read article
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The DVB-H Standard: Comparative Analysis of The Results Obtained for Various Modulation techniques and Different Code Rates
Abstract: DVB-H happens to be the technical specification for the transmission of digital TV to mobile telephones and PDAs - handheld receivers. Published as a formal standard DVB-H is a physical layer specification designed to facilitate the efficient delivery of IP-encapsulated data over terrestrial networks. The creation of DVB-H, which is closely related to DVB-T, also entailed modifications of some other DVB standards dealing with data broadcasting, service Information, etc. It …
Published in Recent Trends in Electronics Communication Systems · Vol. 8, Issue 1, 2021 · pp. 8–18 Read article
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A Review on Shell and Tube Heat Exchanger Design Optimization
Abstract: Shell and Tube Heat Exchangers are extensively used throughout the process industry. The design optimization of S&T Heat Exchanger involves the consideration of many interacting design parameters which can be summarized as Process fluid allocation to shell side or tube side, setting pressure drop design limitation, setting velocity limits, fouling coefficients, selection of type of heat exchanger, layout as per TEMA and number of passes. Different Tube parameters like size, …
Published in Trends in Machine design · Vol. 5, Issue 2, 2018 · pp. 42–53 Read article
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Study and Analysis of Sewing Section in Garment Industry
Abstract: The production process in a garment industry is categorized into Fabric sourcing, Cutting and bundling, sewing, finishing and dispatching. Sewing section is the most important and critical process, the garment is completed and is suitable to be worn. Rolls of fabric which are cut and folded are sewn to specific three dimensional shapes in very complex ways require a high level of skill and experience. For maximum production in the …
Published in Trends in Machine design · Vol. 5, Issue 3, 2018 · pp. 27–33 Read article
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Modern perspectives on composite armor
Abstract: This article is study of garment oriented schemes to learn composite armor. Bulletproof armor has been developed to protect humans from destructive weapon. Assess has been to develop low-cost, easy in fabricate originated easy wearable biocompatible bulletproof garment. Suggestive estimation has scriptive issued competence between variations in plate thickness and amount of energy absorbed by lamination of armor. Henceforth, observation has been 12mm thickness of composite plate lying to be …
Published in Trends in Machine design · Vol. 8, Issue 3, 2021 · pp. 14–20 Read article
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A Review of the Effects of Filler Rod on Bimetallic Weld Joint
Abstract: FSW (Friction Stir Welding) is a technology for joining solid-state metals. Welding metal does not melt and recast. Tunnel defects, kissing bonds, cracks, pin holes, and pipping defects are some of the most common in FSW. The defects occur as a result of poor metal mixing and insufficient heat input in the weld nugget zone. Only a small body of literature has focused on filler material and process parameters for …
Published in Trends in Machine design · Vol. 9, Issue 1, 2022 · pp. 33–39 Read article
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Comparative Study of MEH-PPV, Alq3 and P3HT based OLEDs
Abstract: AbstractElectroluminescence behavior of MEH-PPV (Poly [2-methoxy-5-(2’-ethyl-hexoxy)-1, 4 phenylenevinylene]), Alq3 (Tris (8-hydroxyquinolinato) aluminium) and P3HT as the emissive layer has been investigated in the organic light emitting diode (OLED). 2D numerical simulations have been performed using finite element method from device simulation software ALTLAS from Silvaco Inc. Effect of doping concentration and thickness of active layer on device performance has been studied.Keywords: OLED, numerical simulation, P3HT, MEH-PPV, Alq3Cite this ArticleShilpi Raj, …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 2, 2018 · pp. 25–43 Read article
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Modelling of Concrete Slab Tensile Stresses for Apron International Al-Najaf Airport
Abstract: The objective of this study was to develop Three Dimensional Finite Element Model (3D-FEM) that can be used to investigate the structural analysis of apron area plain and reinforced concrete slab under Airbus A380-800 aircraft land gear loading. The computer program ANSYS (2014) was selected to develop 3D-FEM for this study. Suggested rigid pavement for apron area was studied with different thickness (20,30, 40 and 50 mm) and Young modululi …
Published in Trends in Transport Engineering and Applications · Vol. 3, Issue 2, 2016 · pp. 7–18 Read article
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Influence of Microcrack Healing on Interface Bond Shear Strength of Asphalt Concrete
Abstract: The flexible pavement layers are susceptible to cracks throughout its service life under the repeated loading and environmental impact. However, microcracks can heal itself through rest period and variation in temperature. In this investigation, the influence of microcrack healing on the interface shear strength of asphalt concrete was assessed. Two types of tack coat (rapid curing cutback RC-70 and cationic medium setting emulsion CMS) and three application rates have been …
Published in Trends in Transport Engineering and Applications · Vol. 7, Issue 2, 2020 · pp. 18–28 Read article
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Analysis and Remedy to Avert Traffic Congestion at Eke-Nibo Junction, Awka South L.G.A, Anambra State, Nigeria
Abstract: Congestion is one of the major challenges facing every growing and developing metropolis in Nigeria as a result of increase in population which constitutes increase in the volume of vehicular movement on roadways. Traffic congestion at Eke-Nibo is worrisome especially during festive periods, Eke-market days, weekends and whenever there is activity at the civic center and town Union hall adjacent to it. This study had a reconnaissance survey to investigate …
Published in Trends in Transport Engineering and Applications · Vol. 10, Issue 2, 2023 · pp. 1–13 Read article
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Evaluation of Mechanical Properties of Glass Fibre and Carbon Fibre Reinforced Polymer Composite
Abstract: Abstract Fiber reinforced polymer composite materials are gradually substituting traditional metallic materials because of their high specific strength and better corrosion resistance. However, the cost of the composites is still higher than the traditional materials. Different fibers are used in polymer matrix composites. Glass and carbon fiber are one of the promising reinforcements in polymer matrix composites. In this project, a comparison of mechanical properties and erosion resistance has been …
Published in Journal of Communication Engineering & Systems · Vol. 8, Issue 2, 2018 · pp. 66–74 Read article
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A Multi-Hop Power Adaptive MAC Protocol using Fuzzy Logic for Wireless Networks
Abstract: AbstractPower-based connectivity is a recent research topic in ad hoc networks. Implementing power control mechanisms is essential to enhance the lifetime of the network, and also to improve the throughput, find cost-effective routes and spatial reuse. In this paper, MAC protocol is used for implementing coordination functions and power-control mechanisms using fuzzy rules. Fuzzy rules are generated by upper layers of the network layer using two input variables such as …
Published in Journal of Communication Engineering & Systems · Vol. 3, Issue 3, 2013 · pp. 1–9 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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Black Hole Attack in MANET
Abstract: AbstractWireless network in today’s era is increasing day by day, with the rising need of wireless connectivity the threat of attack on the Mobile Ad-hoc Network (MANET) is also increasing. MANET Routing protocols suffer from different kind of attacks on all the layers of protocol stack. One of such attack which occurs at network layer is Black Hole Attack [1]. Black hole attack is one of the security issues in …
Published in Journal of Communication Engineering & Systems · Vol. 7, Issue 1, 2017 · pp. 29–31 Read article
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Generating Weights for Fuzzy Decision Making Mechanism to Diagnose Heart Disease
Abstract: AbstractHeart disease is one of the diseases spread around the world. It suddenly kills the human community. So use of fuzzy logic to diagnosis the heart disease is essential. So the study was conducted with the following components. They are fuzzification, fuzzy decision making mechanism and defuzzification. The crisp values are changed into fuzzy values by fuzzification. Fuzzy decision making mechanism is based on adaptive neuro fuzzy inference system which …
Published in Journal of Computer Technology & Applications · Vol. 6, Issue 2, 2015 · pp. 7–13 Read article