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1832 articles for “1. Social Media 2. Epidemics and pandemic 3.COVID-19 diagnostic testing 4.Communication 5.Fear.” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Compact MIMO Antenna Array based on Koch Fractal Metamaterial for 5G Applications
Abstract: In this paper, a design of a printed MIMO antenna array for 5G applications is proposed based on low profile structure. Thus, the antenna element is designed as a printed mender monopole with a partial ground plane. The partial ground plane is proposed to realize bandwidth enhancements through etching rectangular slots in the antenna back panel. It is found that such antenna shows two frequency bands, S11<-10dB, from 3 GHz …
Published in Journal of Microwave Engineering and Technologies · Vol. 9, Issue 3, 2022 · pp. 1–7 Read article
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Parametric Optimization of MRR in Manual Air Plasma Arc Cutting of AISI 1017 MS using Design of Experiment
Abstract: In previous fifty years there has been remarkable research in machining and development in technology. Now a days with rise in competition in the market and to achieve high accuracy; the nonconventional machining has become more important in any industry. One of the most important unconventional machining processes is plasma arc cutting (PAC). Its high accuracy, finishing, ability of machining very hard materials makes it more demanding in the market. …
Published in Journal of Materials & Metallurgical Engineering · Vol. 5, Issue 2, 2015 · pp. 22–28 Read article
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Determination of Heavy Metals in Soil Samples in the Vicinity of Liquid Natural Gas Project, Shabwah Governorate, Yemen
Abstract: The present work aimed to determine the contaminants in soils resulting from or deposited due to emissions that come from natural gas in the area of Balhaf which is an LNG project in Republic of Yemen. Total of 8 surface soil samples were collected at depth of approximately (0–10 cm) from two sites which has different distances from the natural gas liquefaction project, took 4 samples from first site. The …
Published in Journal of Materials & Metallurgical Engineering · Vol. 12, Issue 1, 2022 · pp. 67–76 Read article
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Identification of Elastic Constants of Polymer based Composites through Vibration Test Data
Abstract: This paper presents sex per mental and analytical methods of determining elastic constants of two different kinds of materials. Elastic constants of unidirectional glass/epoxy laminates and Aluminium from the measured eigenfrequencies has been performed. Traditional ‘strike method’ is adopted for the exciting the structure and response is obtained through accelerometer. Vibration analysis is carried out using frequency response function (FRF) measurement technique to determine natural frequencies and mode shapes. Elastic …
Published in Journal of Polymer & Composites · Vol. 5, Issue 3, 2017 · pp. 16–21 Read article
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Schmitt-Trigger Based 12T SRAM Cell with Enhanced Stability
Abstract: In this work, we present a single-ended Schmitt-trigger (ST) based 12T static random access memory (SRAM) cell. The proposed cell employs cross-point data aware write structure, and thus supports bit interleaving architecture to mitigate soft errors. The proposed cell does not suffer from read disturbance as bit line is completely isolated from bit storage node. Simulation is done on 180 nm CMOS technology on Cadence. Read static noise margin (RSNM) …
Published in Journal of Semiconductor Devices and Circuits · Vol. 5, Issue 1, 2018 · pp. 5–10 Read article
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A Double-Ended Read-Decoupled 8T SRAM Cell with Improved Read Stability and Access Time at 45 nm Technology
Abstract: AbstractDue to rampant leveling of instrument measurements, the stability of an SRAM cell is the biggest anxiety for upcoming technology. In this paper, it is introduced by an 8T (8-transistor) SRAM cell. The enlarged data stability is offered by proposed cell until read operation. The voltage scale of the node keeping ‘0’ is enlarged by introduced cell and thus it achieves a near butterfly curve that is vital to creation …
Published in Journal of Semiconductor Devices and Circuits · Vol. 4, Issue 2, 2017 · pp. 29–33 Read article
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Effect of Annealling on Optical Band Gap of Fe2O3 Thin Films on Amorphos Transparent Glass Substrate by Spray Pyrolysis Method
Abstract: The Fe 2 O 3 thin film has widely used photo-electrochemical cells. In this paper, the optical properties like band gap of thin films is depend on annealed temperature at 100 o C and 200 o C was discussed. The optical property of Fe 2 O 3 are studied by UV- Vis spectroscopy .The optical band gap decreased after increasing annealing temperature. The refractive index of Fe 2 O 3 …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 10, Issue 2, 2023 · pp. 25–29 Read article
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A Circular Slot Loaded H-Shaped Printed Microstrip Patch Antenna for Lower Band 5G Applications
Abstract: Abstract: A circular slot loaded H-Shape patch antenna is introduced in this paper. A circular slot loaded H-Shape patch antenna is fed with coplanar wave guide (CPW) is discussed which is applicable for lower band 5G applications. The radiation pattern is omni-directional which is very near to H-plane. The area of ground plane is 80×101×1.5 mm3 with substrate material having dielectric constant 2.2 and loss tangent 0.002 is used. The …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 6, Issue 1, 2019 · pp. 9–14 Read article
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Power Analysis Comparison of Gated Diode Dram Cell Design on 32 nm Technology
Abstract: In this paper power consumption of Gated diode DRAM (Dynamic Random Access Memory) cells are carried out. This analysis is carried out on 32 nm scale. The DRAM cell used here are 3T1D and 2T1D DRAM cell. Static, total average and transient power for both types of cells are simulated in order to have a comparison of their performance on the same technology. A comparative study of different types of …
Published in Journal of VLSI Design Tools and Technology · Vol. 5, Issue 1, 2015 · pp. 19–23 Read article
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Performance Analysis of 3T DRAM Using FinFET Based with Leakage Reduction Techniques at 45 nm Technology
Abstract: The proposed area of research is to reduce the power consumption, leakage voltage, leakage current and leakage power of DRAM while maintaining the competitive performance. The Fin FET approach is used in DRAM for high performance. Fin type field effect transistors (Fin FET) are capable substitutes for bulk CMOS at the nano-scale. Fin FET are double gate device. A Fin FET uses an intrinsic body. It greatly suppresses the device-performance …
Published in Journal of VLSI Design Tools and Technology · Vol. 7, Issue 2, 2017 · pp. 28–34 Read article
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Floodplain Inundation Modeling and Mapping for Geray River: Nile Basin, Ethiopia
Abstract: Flood is among the most devastating natural hazards in the world claiming lives and properties more than any other natural phenomena. During high flow, the Geray River flooded the vicinity of the area and causes loss of cultivated land and life. The objective of this study describes the flood extent and depth in the Geray River for different flow conditions. This research involves the integration of HEC-HMS, HEC-RAS, and GIS …
Published in Journal of Water Resource Engineering and Management · Vol. 6, Issue 3, 2019 · pp. 25–45 Read article
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Harmonics Analysis of Single Phase VSI with 5-level and 7-level Inverter
Abstract: Abstract: The conventional two-level inverter is most commonly used for AC drive systems. The inverter produces harmonics, which will cause heating of the power electronic devices as well as load and deteriorate the life of it. Thus, anyhow harmonics should be suppressed or removed, the most common or well-known method to filter out harmonics are introduction of various filters between inverter and load according to requirements. The filters are mainly …
Published in Recent Trends in Electronics Communication Systems · Vol. 6, Issue 1, 2019 · pp. 16–23 Read article
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Performance Analysis and Optimization of a 1550 nm MQW VCSEL by Varying Differential Gain and Injection Current
Abstract: AbstractIn this work, the performance characteristics of a 1550 nm top emitting multi quantum well (MQW) vertical cavity surface emitting laser (VCSEL) using AlGaInAs/InP are presented. Using this material the peak material gain is obtained as 1652.3 cm-1. A high performance designed VCSEL is obtained with the optimized value of differential gain and injection current. The optical output power of 31.37 dBm and the resonance frequency of 2.5 GHz are …
Published in Trends in Opto-electro & Optical Communication · Vol. 3, Issue 3, 2013 · pp. 31–37 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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Einstein Quantum Entanglement and Quantum Communication
Abstract: AbstractQuantum theory suggests that “What we predict must happen in laboratory.” Quantum entanglement was introduced by Einstein, Schrodinger, Rosen and Podolsky in 1935. But the actual experimentation regarding quantum entanglement started 70 years later. Quantum entanglement paves the way for many other quantum processes such as quantum communication, teleportation, and cryptography. The concept of quantum entanglement is very complicated because it is difficult to detect, is affected by environment and …
Published in Trends in Opto-electro & Optical Communication · Vol. 9, Issue 3, 2019 · pp. 1–14 Read article
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Covid-19 Face Mask Detection Using Tensor Flow, Keras and Open CV
Abstract: COVID-19 pandemic has fast exaggerated our regular existence disorderly the whole international trade and movements. Carrying a protective face masks has emerge as a novel common in the near destiny, a variety of community provider contributors will ask the customers to put on masks nicely to avail of their offerings. Therefore, face masks detection has become a important project to assist global society. This manuscript affords a simple technique to …
Published in Trends in Opto-electro & Optical Communication · Vol. 12, Issue 1, 2022 · pp. 5–9 Read article
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Feasibility of Using Nondestructive Testing (NDT) in Roller Compacted Concrete Quality Assessment
Abstract: Roller compacted concrete is a no slump, heavy duty concrete usually used in pavement constructed of roadway, parking lots, in areas of frozen environment or aired region where there is shortage of water for curing, and when other paving alternatives do not satisfy the pavement design requirements regarding heavy loading, and nonstandard wheel configuration. The traditional testing e slab samples have been prepared in the laboratory using two types of …
Published in Trends in Transport Engineering and Applications · Vol. 2, Issue 3, 2015 · pp. 30–39 Read article
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Influence of Constant Micro Strain Levels on the Strength Properties of the Asphalt Concrete mixture
Abstract: Asphalt concrete mixture is designed to resist the deformation and vehicular traffic loading throughout its service life. However, when the asphalt concrete pavement practices over loading within the service life period, it exhibits cracking and rutting. In the present investigation, an attempt has been taken to understand the strength performance of asphalt concrete when practicing variable levels of constant stresses. Asphalt concrete mixture was prepared at optimum asphalt cement requirement …
Published in Trends in Transport Engineering and Applications · Vol. 10, Issue 3, 2023 · pp. 29–35 Read article
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COVID-19 Impacts on Agriculture and Food Security
Abstract: COVID-19 and lockdown originally had the effect that the shift in demand curve to the left resulted in "leveling off" the prices of agricultural produce. The reason for this was not the lack of demand due to rising prices. The reason for this was that due to their consumption being limited to homes and lack of workers, most companies were forced to reduce production in their factories. The coronavirus pandemic …
Published in Current Trends in Information Technology · Vol. 11, Issue 1, 2021 · pp. 1–6 Read article
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Performance Investigation of OLSR and AODV Routing Protocols for 3 D FANET Environment using NS3
Abstract: Flying Ad Hoc Network is the most suitable and most emerging research topic in the field of wireless communication. Flying ad-hoc network (FANET) is a special class of MANET that provides the communication among small flying drone called UAVs (unmanned aerial vehicle) enable with camera, sensor and communication system. FANET has wide area of applications like reconnaissance and surveillance for military and civil purposes. FANETs along with its special features …
Published in Journal of Communication Engineering & Systems · Vol. 8, Issue 2, 2018 · pp. 1–10 Read article