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1049 articles for “Multiplication”
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Signal Transmission in Underwater Using Passive Time Reversal for Single and Multiuser
Abstract: This paper describes passive time reversal communications, which enables multiple users to send information simultaneously to the time reversal array. Experimental results at 3.5 kHz with a 1 kHz bandwidth demonstrate that as many as six users can transmit information over a 4 km range in a 120 m deep water using quaternary phase-shift keying (QPSK) modulation, achieving an aggregate data rate of 6 kb/s. Moreover, the same data rate …
Published in Current Trends in Signal Processing · Vol. 6, Issue 2, 2016 · pp. 49–54 Read article
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Performance Evaluation of Direction of Arrival Estimation in Smart Antenna
Abstract: Direction of arrival (DOA) estimation has typically played a key role in signal processing. Its task is to find the directions impinging on an array antenna to increase the performance of the received signal. To use DOA estimation methods that are applicable to most environments has become the key of technique implementation. The traditional algorithms can get superior performance for DOA estimation in the rich receiving conditions, but they are …
Published in Current Trends in Signal Processing · Vol. 6, Issue 3, 2016 · pp. 39–48 Read article
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An Extensive Review of different PWM Techniques
Abstract: In Alternating Current Power, the quantity of sinusoidal waveform is not matters.The important is quality of sine waveform than quantity so to improve the quality of waveform,the reduction in harmonic content is necessary.For this achievement, different PWM techniques is used.This paper includes four basic PWM techniques single PWM,multiple PWM ,sinusoidal PWM and Hysteresis PWM.
Published in Current Trends in Signal Processing · Vol. 11, Issue 1, 2021 · pp. 26–29 Read article
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Automatic Saline Monitoring System
Abstract: Doctors use Intravenous (IV) therapy to replenish lost fluids flush wounds, deliver medicals and sustain patients through surgery, dialysis and chemotherapy. IV therapy is also used when a person requires a large dose of medication for an extended period of time or when a person requires multiple injections while receiving treatments for some chronic conditions. When fed with saline, monitoring the level of saline is mandatory. There are cases where …
Published in Current Trends in Signal Processing · Vol. 12, Issue 2, 2022 · pp. 14–18 Read article
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Design of Phase Coded Sequences for MIMO Radar Systems
Abstract: MIMO radar technology is emerging trend in the radar systems and researchers are interested to explore this technology. Phased array radars show single waveform radiated in one direction where has MIMO antennas can radiate in different directions and locate multiple targets with better resolution. To design waveform for MIMO radar, every transmitted waveform must orthogonal all corresponding waveform. Many binary orthogonal sequences, i.e., orthogonal with respect to frequency or phase …
Published in Current Trends in Signal Processing · Vol. 12, Issue 3, 2022 · pp. 28–35 Read article
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Optimization of Combined Cooling, Heating and Power Plant
Abstract: In today’s world where there are energy crises, there is a need to conserve the same. In order to conserve the energy, it is imperative to utilize its available forms as per the requirement that arise from the end user. In this paper, modeling and optimization of a combined cooling, heating and power (CCHP) plant is done wherein minimization of exergy destruction is set as an objective function. Electric and …
Published in Emerging Trends in Chemical Engineering · Vol. 4, Issue 1, 2017 · pp. 7–14 Read article
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Formation of Anolyte and Catholyte Types of Water during electrolysis and their Effect on Living Organisms
Abstract: During electrolysis, an anolyte (dead water) and catholyte (living water) solutions are formed. Anolyte promotes metabolic processes, and is also mild antiseptic. The disinfecting effect of the anolyte is equivalent to treatment with iodine, brilliant green, hydrogen peroxide, without causing chemical burns of living tissues and not staining them. The living water, being a catholyte, has enhanced bio stimulating properties. It has a beneficial effect on the human organism, enhancing …
Published in Emerging Trends in Chemical Engineering · Vol. 8, Issue 3, 2021 · pp. 34–40 Read article
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Optimisation of Electrocoagulation Flocculation Treatment of Laundry Greywater with Design of Experiment Methodology
Abstract: It is becoming increasingly more important to relook at the impact that greywater has on the environment and the opportunities that it can provide for water re-use. More especially that the sewer pipelines are often over flooded and overflowing onto the streets in most townships in South Africa due to sewer blockages, population, and wastewater treatment plants (WWTP) overcapacity. To cope with current and future wastewater treatment (WWT) demands, developments …
Published in Emerging Trends in Chemical Engineering · Vol. 8, Issue 3, 2021 · pp. 41–58 Read article
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Dependency of pure liquid pool boiling heat transfer coefficient to bubble contact angle on roughened Brass heater in new model
Abstract: Heat transfer coefficient of nucleate pool boiling Nucleation is a basic part of phase transformations, which plays an important role in understanding and describing any phase change processes. For a boiling process, nucleation appears in the initial stage, and directly affects bubble formation and boiling intensity. According to the heterophase fluctuations which induce phase transition, the phase change has two main types. Classically, phase change caused by the fluctuation with …
Published in Emerging Trends in Chemical Engineering · Vol. 9, Issue 2, 2022 · pp. 29–36 Read article
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Effects of loading rates on durability life of a part for random loads
Abstract: In the current scenario of fierce competition, manufacturers are under tremendous pressure to launch defect free products at the earliest. Cutting down time at every stage of product development is the need of the hour and testing is no exception. Testing and validation in the automotive domain is of immense importance as any small failure can also lead to catastrophic consequences. Continuous emphasis is in place to accelerate the tests …
Published in Journal of Automobile Engineering and Applications · Vol. 5, Issue 3, 2018 · pp. 1–10 Read article
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Selection of R14-tyres using Analytic Hierarchical Process on the Basis of Uniformity and Strength
Abstract: Tyres play a commanding role in an automobile industry. Balancing and safety of the vehicle are the primary issues for automobile industry. These two parameters are highly dependent on the uniformity and strength of the tyres. There are various criteria that affect tyres uniformity and strength. Consequently, selection of tyres is a Multi-criteria Decision Making (MCDM) problem. In that respect are many methods available for selection of tyres; however, this …
Published in Journal of Automobile Engineering and Applications · Vol. 1, Issue 3, 2014 · pp. 7–17 Read article
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Modeling Cogeneration System in Shallow Geothermal Installations
Abstract: This paper presents a theoretical modeling of a cogeneration system using multiple heat exchangers and thermoelectric generator. The modeled system, designed for shallow geothermal energy, is a closed piping unit containing water as heat transfer fluid that circulates through a closed loop releasing thermal energy at the surface for heating and sanitary hot water. In addition, a Peltier cells array is attached to the piping system to generate electricity, thus …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 11, Issue 3, 2020 · pp. 13–23 Read article
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Review on: Heterogeneous Solid Base Catalyst Production from Waste Animal Bone as Transesterification of Jatropha Oil
Abstract: Biodiesel is produce mainly by transesterification, reacting vegetable oils or animal fats with monohydric alcohol in presence of a catalyst. The transesterification reaction is affected by various parameters. One of this parameter is catalyst type. Generally, catalysts used in transesterification reaction can be divided into three categories: homogenous, heterogeneous and enzymes. Heterogeneous catalysts offer numerous advantages over homogeneous catalysts as it can easily be separated from reaction mixture and can …
Published in Journal of Catalyst & Catalysis · Vol. 7, Issue 1, 2020 · pp. 13–23 Read article
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Determination of the Priority in Risks Management of Construction Projects
Abstract: Construction projects are faced to a state of uncertainty and an increase in the likelihood of multiple risk types, since that the achievement of these projects goes through several stages. The first is the decision stage and other stages ending with the maintenance phase of these projects, which leads to increase in the length of the period of completion, and privacy enjoyed by construction projects and distinguishes them apart from …
Published in Journal of Construction Engineering, Technology & Management · Vol. 7, Issue 1, 2017 · pp. 45–54 Read article
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Use of Steel Slag in Fly Ash Based Concrete for White Topping
Abstract: The fast growth in industrialization has resulted in tons of by products or waste materials, which can be used as secondary cementitious materials such as fly ash, steel slag etc. The use of these byproducts not only helps to utilize these waste materials but also improves the properties of concrete in fresh and hydrated states. Steel slag and fly ash are the two materials used in concrete. Most concrete produced …
Published in Journal of Construction Engineering, Technology & Management · Vol. 6, Issue 3, 2016 · pp. 63–69 Read article
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Theoretical and Experimental Analysis of Wind Flow on Buildings Arranged for Pressure Recovery
Abstract: The flow past buildings at higher speeds result in low static pressurethat causes uncomfortable breathing for personal moving around in the vicinity. A new arrangement of buildings in a multiple building environment is suggested and analysed that results in pressure recovery by cancelling the vertical flows from two directions. Wind Tunnel models are fabricated and tested in a subsonic open test section wind tunnel.Numerical analysis is done for comparison of …
Published in Journal of Construction Engineering, Technology & Management · Vol. 5, Issue 2, 2015 · pp. 46–60 Read article
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Vivid Sustainable Building Materials in various Topographical Regions in India
Abstract: Construction and geography are engaged in a happy relation in any indigenous settlement. India, on other hand is a country with multiple geographical regions with various topographical features anddifferent climatic conditions. With this diversity in geo-climatic characteristics, since past we have many techniques to response it without actually exploiting its contents. May it be construction, transportation, operations or living and earning, traditional practices of each of them were though time …
Published in Journal of Construction Engineering, Technology & Management · Vol. 5, Issue 2, 2015 · pp. 61–73 Read article
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Evaluating Factors Effecting Building Construction Labor Productivity in Somaliland
Abstract: The construction industry has been referred to as having a multiplier effect on the performance of any economy. Poor productivity of workers is one of the most overwhelming problems faced by construction industries, especially those in developing countries, the poor productivity of labor can cause a project cost and time overrun. The pinpointing of the factors that affect labor productivity would enable the project team to effectively use the resources …
Published in Journal of Construction Engineering, Technology & Management · Vol. 11, Issue 2, 2021 · pp. 19–28 Read article
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Design And Implementation of Controllers for Quadruple Tank System
Abstract: Process industries have tightly integrated processes which are non-linear and have multiple manipulated and controlled variables. Level measurement plays an important role in many industries. In this paper, the level of the two lower tanks has to be controlled. Three different controllers have been designed and implemented by manipulating the motorised control valve. Conventional controllers may not perform well because of the variations in process dynamics and disturbances around them. …
Published in Journal of Control & Instrumentation · Vol. 9, Issue 1, 2018 · pp. 25–32 Read article
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RF Based 3-Axis Robotic Arm using MEMS
Abstract: This 3-axis MEMS accelerometer are used in various applications like human–machine interactive games; for this application, hand gesture problem is used. This setup includes a number of 3-axis accelerometers on fingers and back of the palm to measure dynamic and static gestures, a programmable microcontroller to detect hand postures of American Sign Language and send them to a host via serial communication and analog multiplexer. The apparatus consists of sensors …
Published in Journal of Control & Instrumentation · Vol. 9, Issue 3, 2018 · pp. 15–20 Read article