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799 articles for “linearly”
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Improved Face Recognition Rate Based on PCA and LDA Using Image Preprocessing Techniques
Abstract: Principal component analysis (PCA) and linear discriminant analysis (LDA) are two powerful tools utilized for dimensionality reduction and feature extraction in most of pattern recognition applications. PCA selects features important for class representation while LDA algorithm selects features that are most effective for class separability. This paper carries out a comparative study of the two important algorithms in the context of enhancement obtained using certain image preprocessing techniques. The implementation …
Published in Journal of Instrumentation Technology & Innovations · Vol. 5, Issue 2, 2015 · pp. 19–24 Read article
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Evaluation of Thermal Damage in Pipe by Nonlinear Guided Wave
Abstract: This work investigates the evaluation of thermal damage in aluminum pipe by using nonlinear guided wave. Thermal loading was imposed on the specimens to cause thermal degradation. Flexible Polyvinylidene Fluoride (PVDF) comb transducers are used to generate and receive the ultrasonic waves. The second harmonic wave generation technique was used to check the material nonlinearity change after different heat loading. Conventional linear ultrasonic approach based on the acoustic attenuation was …
Published in Journal of Nuclear Engineering & Technology · Vol. 3, Issue 1, 2013 · pp. 22–27 Read article
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Investigate the origin of the Hall Effect
Abstract: The Hall Effect was first recorded by a scientist named E. H. Hall. Detailed information on how the Hall effect is produced and what needs to be done to understand it is also provided here. After a brief introduction of the Hall operating rule and the basic characteristics of Hall devices, the most recent developments in the field are reviewed. It outlines: better information about the influence of device geometry …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 11, Issue 2, 2021 · pp. 8–13 Read article
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Analysis of Sedimentation Deposition in Morbe Reservoir by Using RS and GIS
Abstract: The reduce in the storage volume due to sediment deposits in the reservoir at different level over a period of time can be related with the decrease in water diffusion zone at different elevation. This study shows the use of RS and GIS to estimate reservoir sediment deposits. The 2007 original capacity curve of water storage is now used as base for the 2017–18 sediment assessment. The digital processing was …
Published in Journal of Remote Sensing & GIS · Vol. 11, Issue 1, 2020 · pp. 16–26 Read article
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Fabrication of Citric Acid Using Molasses by Aspergillus niger
Abstract: Citric acid is an organic acid with abundant industrial bid. It is lengthily used in the food and beverage industry as it combines an enjoyable taste with low toxicity and sugariness. It was prepared from disparate materials like from molasses and other similar material. Whereas, some of the molasses is used for making of ethanol. But the leftover has been exported to overseas. This paper is studied, the utilization of …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 11, Issue 1, 2020 · pp. 37–38 Read article
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Feasibility of Optimized Heat Source Assisted Combustion in Solid Rocket Motors
Abstract: Advances in rocket propulsion have a predominant role in space exploration developments. As an active chemical propulsion system, the efficiency of operations depends largely upon the nature of the combustion process and related energy transfer. Modern rockets are well known to epitomizes a distinct area of propulsion assisted by external thermal source(s)/rocket boosters. The presence of external heat source(s) encourages high possibility of fire risk/ hazards, which can adequately threaten …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 7, Issue 3, 2018 · pp. 12–25 Read article
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Bayesian Weibull Model in Survival Analysis
Abstract: In this paper, we examine the performance of Maximum Likelihood Estimation (MLE) and Bayesian estimation of survival function of Weibull distribution with two parameters to the assigning informative prior and with three loss functions, namely, Linear Exponential (LINEX) Loss, General Entropy Loss and Squared Error Loss. Here the simulation study is carried out and the statistical analysis is done. Keywords: Weibull distribution, maximum likelihood estimation, Bayesian estimation, linear exponential loss, …
Published in Research & Reviews : Journal of Statistics · Vol. 7, Issue 1, 2018 · pp. 24s–29s Read article
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Numerical Analysis of Oblique Impinge shock-wave/turbulent boundary-layer interaction Using Reynolds Average Navier Stroke Equations
Abstract: Interaction of shock waves with turbulent boundary layer plays an important role in the design and operability of high-speed aerospace vehicles and air-breathing engines. During interaction, the adverse pressure gradient of the shock is often strong enough to separate the boundary layer. Reynolds averaged Navier-Stokes simulations using conventional turbulence models do not predict the correct size and shape of the separation bubble in strong shock/turbulent boundary-layer interactions. The corresponding surface …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 8, Issue 3, 2019 · pp. 31–48 Read article
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The Comparison in Time Series Forecasting of Air Traffic Data by Autoregressive Integrated Moving Average Model, Radial Basis Function and Elman Recurrent Neural Networks
Abstract: Nowadays, nonlinear time series and artificial neural networks (ANN) models are used for forecasting in the field of business, agriculture and soon. Recent studies have shown, ANN have been successfully used for forecasting of financial and agriculture data series The classical methods used for time series prediction like Box-Jenkins or ARIMA assumes that there is a linear relationship between inputs and outputs. ANN have more advantages that can approximate to …
Published in Research & Reviews : Journal of Statistics · Vol. 7, Issue 3, 2018 · pp. 75–90 Read article
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Growth Performance and Weight Estimation of Large White Piglets Weaned at Different Ages
Abstract: The study was carried out on 24 neonatal large white piglets at the National Livestock Breeding Station, Pong-Tamale to assess their performance when weaned at different ages and to determine the relationship between linear body measurements and the body weight of piglets in weight prediction. The piglets were randomly weaned at three selected weaning ages (4, 6 and 8 weeks) but reared under uniform conditions. Initial body weight (BW), initial …
Published in Research and Reviews : Journal of Veterinary Science and Technology · Vol. 4, Issue 3, 2015 · pp. 15–23 Read article
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Group Technique for Boundary Layer Equations of Time-Dependent Power-Law Fluids Over Non-Isothermal Surface
Abstract: The multi-parameter group technique is developed to derive invariant solution for the system of non-linear partial differential equations governing unsteady, two-dimensional boundary layer flows over a heated surface of power-law fluids. The basic non-liner system of partial differential equations with three independent variables is converted into system of non-linear ordinary differential equation, by single application using proposed multiparameter group method. The numerical solution for the system of nonlinear ordinary differential …
Published in Research & Reviews : Journal of Physics · Vol. 8, Issue 2, 2019 · pp. 61–68 Read article
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Matrix Law of Current
Abstract: In this study, the current is defined over matrix. The proposed matrix law of current corresponds with the existing Ohm’s law of current. Thus, the new law of current comprises with the characteristics of matrix. The matrix representation of current provides the compact law for both the types of current, i.e. Alternative Current (AC) and Direct Current (DC). The element of matrix represents the position of electron. Thus, the corresponding …
Published in Research & Reviews : Journal of Physics · Vol. 10, Issue 1, 2021 · pp. 24–29 Read article
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Applications of Fuzzy Set in Mathematical Programming
Abstract: The Information in today’s world are uncertain and are under circumstances of increased uncertainty so decisions are difficult to be made. There are different techniques to represent these uncertainties. One of the ways of representing it is with the help of Fuzzy Set Theory & Fuzzy Numbers. One of the very fascinating ideas of using fuzzy set in Mathematical programming and linear programming problems has benefited largely in decision-making, in …
Published in Research & Reviews : Journal of Statistics · Vol. 10, Issue 3, 2021 · pp. 24–28 Read article
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Study of Phase Velocity and Magneto Plasmon Dispersion on the Surface of Carbon Nanotubes in Low Energy State
Abstract: Several authors have worked on theoretical and experimental plasmon excitations. The researchers have been studying the dispersion relation of magneto plasmon in the low energy state on a cylindrical surface of carbon nanotube obtained with the help of linear-angular momentum transfer. Here, we demonstrate the Dirac-like Hamiltonian equation for carbon nanotubes in the presence and absence of a parallel applied magnetic field. We assume the cylindrical carbon nanotube is infinitesimally …
Published in Research & Reviews : Journal of Physics · Vol. 11, Issue 3, 2022 · pp. 21–25 Read article
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Formulation and In vitro Evaluation of Oral Fast Dissolving Tablets of A Novel Antidepressant Drug by Using Camphor As A Subliming Agent
Abstract: The purpose of the present investigation is to formulate fast dissolving tablets of Venlafaxine HCl, a novel antidepressant by direct compression method using camphor as subliming agent in the three different concentrations of 2%, 5% and 10%. Croscarmellose, tulsion-414 and sodium starch glycolate were used as superdisintegrants in two different concentrations of 5% and 10%. The drug-excipients compatability was ruled out through FTIR studies. A total of six formulations were …
Published in Research & Reviews: A Journal of Drug Design & Discovery · Vol. 2, Issue 3, 2015 · pp. 12–18 Read article
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Simultaneous Estimation of Atenolol and Nifedipine to be incorporated in Buccal Patch: Method Development and Validation by UV-Spectrophotometric Approach
Abstract: A simple, precise, accurate and reproducible spectrophotometric method has been developed for the simultaneous estimation of Atenolol and Nifedipine. Atenolol and Nifedipine are used in combined dosage form for cardiovascular diseases. Hence, it is necessary to develop a method to analyze the two drugs simultaneously by UV-spectroscopic method. Simulated salivary fluid of pH 6.8 was used as the medium. Simultaneous equation method was developed as per ICH guidelines. The absorption …
Published in Research & Reviews: A Journal of Pharmacognosy · Vol. 2, Issue 1, 2015 · pp. 28–32 Read article
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Validation and Forced Degradation Studies for the Determination of Erlotinib in Bulk and Pharmaceutical Dosage Forms by RP-HPLC
Abstract: A new reverse phase-high performance liquid chromatography (RP-HPLC) have been developed and validated for the determination of Erlotinib in bulk drug and pharmaceutical dosage form. The developed method is rapid, accurate, precise, simple and economical. The separation was carried out using column Hypersil ODS C-18 (150 mm x 4.6 mm 5 μm particle size) in isocratic mode, using mobile phase composition of 0.1% orthophosphoric acid: Acetonitrile in the ratio of …
Published in Research & Reviews: A Journal of Drug Formulation, Development and Production · Vol. 3, Issue 2, 2016 · pp. 44–53 Read article
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Development and Validation of an Analytical Method for Determination of Modafinil in Bulk and Formulations using First Order Derivative UV Spectrophotometer
Abstract: Analytical method validation is an important tool to determine the absolute concentration of drug in the formulation. In the case where a drug is not able to produce characteristic peak shape, a simple, accurate, precise and sensitive method, which will be governed through the software conversion of UV spectra into the first-order derivative, can be used as an alternative method for the estimation of modafinil in bulk and pharmaceutical dosage …
Published in Research & Reviews: A Journal of Drug Formulation, Development and Production · Vol. 6, Issue 3, 2019 · pp. 23–29 Read article
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Spectroscopic and Chromatographic Methods for Estimation of Voriconazole in Bulk and Pharmaceutical Dosage Forms
Abstract: Rapid, accurate and precise methods have been developed for estimation of voriconazole in bulk and pharmaceutical dosage forms using Ultraviolet (UV) spectroscopy and reverse phase high performance chromatography (RP-HPLC). The λmax selected in UV spectroscopy method was 255 nm and the calibration curve was linear in the concentration range of 2-50 µg/mL with correlation coefficient (r2)>0.99. In RP-HPLC method, the separation was carried out on Kromasil C18 (250 x 4.6mm, …
Published in Research & Reviews: A Journal of Drug Formulation, Development and Production · Vol. 8, Issue 1, 2023 · pp. 33–39 Read article
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Development and Validation of Spectrophotometric and Colorimetric Method for the Determination of Ritonavir in its Bulk and Pharmaceutical Dosage Form
Abstract: A straightforward, exact, precise and sensitive UV spectrophotometric assay technique and a basic and sensitive colorimetric assay method have been created and validated for the quantitative estimation of Ritonavir from bulk drug and tablet formulations. UV spectrophotometric strategy which includes the assurance of Ritonavir in bulk medication and pharmaceutical dosage forms and has an assimilation greatest at 240 nm in methanol. The Beer's law was obeyed over the concentration range …
Published in Trends in Drug Delivery · Vol. 4, Issue 3, 2017 · pp. 32–41 Read article