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633 articles for “Maths”
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Mathematical Modeling of Hybrid PV- Wind Grid Connected Energy System for Improvement in Renewable Energy Applications
Abstract: Presently the world has relied upon petroleum products for energy supply. The overall utilization of non-renewable energy sources (coal, gas and oil) is as yet expanding regardless of the developing worldwide familiarity with the natural effect of non-renewable energy source utilization and of restricted petroleum derivative stores. By and by increment in the cost of oil has been a most significant wellspring of prudent issue on the planet. The creation …
Published in Trends in Electrical Engineering · Vol. 10, Issue 2, 2020 · pp. 21–32 Read article
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Qualitative assessment of the psychological and emotional responses of COVID-19 patients and the stigma they feel and face from the society prior and post math of their recovery: A preliminary study.
Abstract: Abstract:From the very beginning of the SARS-COV-2 pandemic, there has been an enormous and everlasting uncertainty among the people about how things will get back on track. This uncertainty along with the other contagious pandemic protocols like social distancing, quarantine, lockdown, job loss, financial crisis, stress, career anxieties, eviction from rooms and apartments and social stigma to the patients have contributed enormously the psychological pressures. This study aimed at estimating …
Published in Research and Reviews: A Journal of Neuroscience · Vol. 12, Issue 3, 2022 · pp. 14–24 Read article
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A Comparative Study of MVA vs. EVA in Pregnancy Termination upto 10 Weeks of Gestation
Abstract: We share our research project, undertaken by a small institutional study group lead by myself, towards completion of my specialist training program of Masters in Obstetrics & Gynaecology. The study was undertaken after due approval. This study is motivated and is based on set of previous studies done in various institutions of excellence, worldwide and may resemble to some study results published elsewhere. However, due credit has been given to …
Published in Research and Reviews: Journal of Oncology and Hematology · Vol. 3, Issue 1, 2014 · pp. 6–10 Read article
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Calcified Ovarian and Uterine Fibroid- A Rare Occurrence: Case Report
Abstract: In this paper we present a case report of female who presented with a non-functioning large ovarian fibroid with extensive calcification with uterine fibroid in a peri menopausal age. Fibromas belong to a spectrum of benign ovarian tumor and are the most common sex cord tumor. Total abdominal hysterectomy with bilateral salpingo oophorectomy was done as the patient was not desirous of future fertility. Histopathology showed multiple uterine fibroids with …
Published in Research and Reviews : Journal of Surgery · Vol. 3, Issue 1, 2014 · pp. 14–17 Read article
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Fibroepithelioma of Vagina
Abstract: In this paper we present a case report of 52-year-old female who presented with finger like projections coming from vagina which on histopathological examination came out to be fibroepithelioma (FEP) of vagina—a benign form of basal cell carcinoma (BCC). Patient was treated with complete exicision of growth without recurrence in 2 years of followup visit. Keywords: Fibroepithelioma, BCC, basaloid cells, complete excision.
Published in Research and Reviews : Journal of Surgery · Vol. 3, Issue 2, 2014 · pp. 1–3 Read article
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Secondary Infertility due to Retention of Foetal Bones: A Rare Occurrence: A Case Report
Abstract: In this paper we present a case of unwanted contraception through prolonged retention of foetal bone—a rare cause of secondary infertility. We describe a case of intrauterine retention of foetal bone diagnosed three years after the termination of a pregnancy. A hysteroscopy was performed and irregular structures were removed. These fragments were foetal bones, which probably functioned as an intrauterine contraceptive device (IUCD). After removal of the foetal bone fragments, …
Published in Research and Reviews : Journal of Surgery · Vol. 3, Issue 2, 2014 · pp. 22–25 Read article
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Spontaneous Perforation of Uterus in Pyometra
Abstract: Accumulation of pus in the uterine cavity is known as Pyometra. Any cause that obstructs the flow of menstrual blood and endometrial secretions can lead to development of Pyometra. Various factors have been implicated in development of this condition which includes any benign or malignant growth that obstructs cervical canal, any age related stenosis, previous radiotherapy, previous surgeries on cervix. Spontaneous Rupture of Pyometra is a rare event and can …
Published in Research and Reviews : Journal of Surgery · Vol. 3, Issue 3, 2014 · pp. 16–18 Read article
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Transient Analysis of Electronic Circuits Including Zener Diodes
Abstract: This paper addresses the transient analysis of the electronic circuits incorporating Zener diodes. It starts with suggesting a new Zener diode model. The model is based on efficiently utilized step functions of the applied voltage. It includes also the diode’s main technical parameters such as its resistances in both the forward and reverse current directions as well as its Zener’s breakdown voltage. The sharp discontinuities of the step-functions are dealt …
Published in Journal of VLSI Design Tools and Technology · Vol. 11, Issue 3, 2021 · pp. 1–9 Read article
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Novel Technique for the Analysis of Electronic Circuits Including Zener Diodes
Abstract: This paper addresses the analysis of electronic circuits including Zener diodes. It starts with a modified Zener diode model, which is based on expressions involving step-functions, its parameters such as the resistances in both current directions as well as its breakdown (or Zener) voltage. In contrast to the earlier approaches expressing the sharp discontinuities characterizing the step-functions in terms of inverse hyperbolic tangent terms, this paper adopts more concise and …
Published in Journal of VLSI Design Tools and Technology · Vol. 11, Issue 3, 2021 · pp. 31–41 Read article
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Analysis of Six-Pulse Bridge Circuits Including Zener and Semiconductor Diodes – Part Two
Abstract: The present study offers a generic method for simulating and modelling six-pulse rectifier bridge circuits in the time domain. These circuits can include Zener and/or semi-conductor type diodes or even a mixture of them. The governing system of simultaneous algebraic and differential equations are listed and solved numerically using a computer code written in Mathematica. The flexibly written program can handle voltage sources of any time waveform, frequency or internal …
Published in Journal of VLSI Design Tools and Technology · Vol. 12, Issue 2, 2022 · pp. 13–21 Read article
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Study of Proximity Points and Fixed Points
Abstract: This paper explores the concepts of proximity points and fixed points, which are fundamental in mathematical analysis and nonlinear functional analysis. Fixed-point theorems play a crucial role in optimization, game theory, differential equations, and dynamic systems. Proximity points, an extension of fixed points, provide a more generalized approach, allowing near-coincidence rather than exact identity. The study discusses classical fixed-point theorems, such as Banach’s contraction principle, Brouwer’s fixed-point theorem, and Schauder’s …
Published in Recent Trends in Mathematics · Vol. 1, Issue 2, 2024 · pp. 28–31 Read article
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Design of a Capacitive Loaded and Composite Split Ring Resonator Based Monopole Patch Antenna
Abstract: AbstractHere we have designed a monopole antenna at 2.8 GHz frequency and then we have loaded a metamaterial unit cell at the top of the monopole antenna and the same unit cell is also used as composite split ring resonator (CSRR) and incorporates with the same antenna. In both of the cases we have calculate the resonant frequency and gain of the antenna.Keywords: Metamaterials, microwave filters, splitring resonators (SRRs)\Cite this …
Published in Current Trends in Signal Processing · Vol. 8, Issue 1, 2018 · pp. 23–27 Read article
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Optimum Mixture Proportioning of Sawdust Ash Blended Sand-Stone Dust Blocks Using Scheffe’s Regression Theory
Abstract: This study carried out an experimental investigation on the compressive strength of sawdust ash blended sand-stone dust block of size 450 x 225 x 150 mm using Scheffe’s (5, 2) regression theory. The compressive strength of sawdust ash blended sand-stone dust blocks obtained based on fifteen trial mix ratios were used to develop the mathematical model while the results of the compressive strength values obtained based on the additional fifteen …
Published in Journal of Construction Engineering, Technology & Management · Vol. 13, Issue 2, 2023 · pp. 33–40 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
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PV-Powered Bicycle for Health and Pollution Concern
Abstract: AbstractThe concern over the fast depleting non-renewable energy sources and the heavy toll on human health as well as alarming rate of environmental pollution and global warming has finally made the automobile industry look for cleaner alternatives sources for fuel. The potential of new generation energy sources such as solar energy to perform equally as well, as its non- renewable competition i.e, fossil fuels is the challenge that today’s scientists …
Published in Journal of Microcontroller Engineering and Applications · Vol. 6, Issue 3, 2019 · pp. 5–13 Read article
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Grid Integrated Micro Inverter for PV Module with Anti-Islanding and MPPT Schemes
Abstract: From the economic perspective, densely populated areas can generate great amounts of electric power by installing PV panels on its rooftops and it can be fed in to the grid. This study describes a grid tied micro inverter for photovoltaic applications. The system consists of a Cuk converter connected with a full-bridge current source inverter. The connection of micro inverter systems to the grid can raise several challenges as the …
Published in Journal of Power Electronics and Power Systems · Vol. 8, Issue 3, 2018 · pp. 39–45 Read article
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To Study Effects on the Strength of Concrete after Partially Replacing Fine Aggregates by Waste Glass Bottle in M40 Concrete Mix
Abstract: AbstractConcrete is used as the dominant material in construction industries. As the population of globe increase rapidly, worlds faces the problem for habitation and waste by-product. As the waste is proportional to the population and there are restrictions of natural resources used in concrete, this construction industry needs some heed to use some other material so that they can be mixed in concrete to get the new product, the physical …
Published in Journal of Structural Engineering and Management · Vol. 5, Issue 1, 2018 · pp. 39–48 Read article
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Impacts of Hybrid Vehicles on Environment
Abstract: Now a day many of vehicle manufactures are facing to manufacture a vehicle, which is produce cleaner alternative fuel because most of the gasoline vehicles releases CO2 gases which are more than 99% of the carbon in the fuel is emitted as CO2 when the fuel is burned. During acceleration, these percentage increases and also other gases are emitted like hydrocarbons and carbon monoxide. This carbon content may vary by …
Published in Trends in Electrical Engineering · Vol. 8, Issue 3, 2018 · pp. 46–50 Read article
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A Case Study on Analysis of Road Safety concerns on a stretch of National Highway 12 in Rajasthan
Abstract: AbstractRoad safety is a growing social concern in the present day world. Rapid expansion in the road network and high motorization growth has led to serious impacts on road safety levels in India. The analysis of road accident data 2015 reveals that about 1,374 accidents and 400 deaths took place every day on Indian roads, which further converted into 57 accidents and loss of 17 lives on an average every …
Published in Trends in Transport Engineering and Applications · Vol. 4, Issue 3, 2017 · pp. 1–7 Read article
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A Review of Particle Swarm Optimization
Abstract: Particle swam optimization (PSO) is a computational technique that streamlines a problem by attempting to improve the arrangement of an applicant with respect to a given value ratio iteratively. This approaches the problem by having a number of candidate solutions, and then pushes the particles in the search space according to a mathematical equation over the position and velocity of the particles. Researchers and specialists have provided various perspectives and …
Published in Journal of Communication Engineering & Systems · Vol. 11, Issue 2, 2021 · pp. 29–36 Read article