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    Wyświetlanie 1-9 z 9
    Tytuł:
    Wind Powered Electricity Generation Through Self Excited Induction Generator
    Autorzy:
    Chaturvedi, Yatender
    Goel, Ankit
    Powiązania:
    https://bibliotekanauki.pl/articles/1075571.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Magnetic saturation
    Magnetizing reactance
    Newton-Raphson method
    Opis:
    An iterative method is used to identify the saturated magnetizing reactance and the frequency of a self-excited induction generator for given capacitance, speed, and load in a systematic way. Under steady state, this procedure is effective in analyzing such systems. A correlation has been observed between the computational algorithm results & experimental outcomes. Under steady state condition, changes in various variables have been studies and the determination of the feasibility of such system is done.
    Źródło:
    World Scientific News; 2019, 121; 90-100
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A New Approach for Solving Intuitionistic Dual Fuzzy Nonlinear Fractional Transportation Problem
    Autorzy:
    Anju, A.
    Anukokila, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1068615.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Dual
    Intuitionistic Fuzzy
    Newton Raphson Method
    Nonlinear Equations
    Opis:
    In this paper a new approach is explained for solving intuitionistic dual fuzzy fractional nonlinear equations. Here we have suggested a numerical method for solving a dual fuzzy nonlinear fractional equations instead of standard analytical techniques which are not suitable everywhere. Initially we wrote a dual fuzzy non-linear fractional equations in parametric form and then solve it by iterative method. An illustrative example is given to show the efficiency of our approach.
    Źródło:
    World Scientific News; 2019, 132; 220-232
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Actual picture of the law of universal gravitation and the quantum gravity theory describing the real state of the universe
    Autorzy:
    Borowski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/412595.pdf
    Data publikacji:
    2013
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    classical gravity theory
    quantum gravity theory
    dark matter
    Copernicus
    Newton
    Opis:
    This paper presents the real sense of the classical and quantum theory of gravitation as a component of the actual picture of the universe where the volume, as the size of the expanding universe, approaches infinity, while the total of material masses goes to zero. At present, these two standard theories describe the phenomenon of gravitation but do not explain the very mechanism and the cause of this process. This constant and real lack of information on that subject is consistent with natural laws and the same with the laws of physics, which were already experimentally determined by Werner Heisenberg in 1927. The paper also presents the causes of inability to explain up to the present the actual picture of the essence of the universe.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2013, 11; 44-53
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Efficiency and Convergence of Bisection, Secant, and Newton Raphson Methods in Estimating Implied Volatility
    Autorzy:
    Mahrudinda, Mahrudinda
    Munandar, Devi
    Purwani, Sri
    Powiązania:
    https://bibliotekanauki.pl/articles/1193324.pdf
    Data publikacji:
    2021
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Black-Scholes model
    Newton Raphson
    bisection
    secant
    volatility
    volatility implied
    Opis:
    This study aims to estimate volatility prices based on the black-Scholes model (BSM) function with research data taken during the COVID-19 pandemic. The estimates of the volatility values are obtained by using three numerical methods, namely the bisection, secant, and Newton Raphson methods. The numerical processes that produce some iteration results in the three methods are then analyzed and the best convergence is sought. As a result, Newton Raphson method produces the smallest number of iterations, which stops at the 3rd iteration and gets a volatility value of 0.500451 with an absolute error value of 0.000388. However, the method requires an initial approximation which lies only in two intervals on the axis σ which are close to the true root. Meanwhile, for the other two methods, namely Bisection and Secant, this limitation does not apply, as long as there is an interval that guarantees the existence of roots. In this case, bisection method requires11 iterations to converge with volatility value of 0.500342 and error value of 0.000878. Whereas secant method requires 4 iterations to converge with a volatility value of 0.500449 and error value of 1.68938E-05. This suggests, that in some cases the use of Newton method, should be initialized with the use of bisection or secant method, to ensure successful iteration and accelerate the rate of convergence.
    Źródło:
    World Scientific News; 2021, 153, 2; 157-168
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of Cobb-Douglas Production Function to Manufacturing Industries in West Sumatra Indonesia
    Autorzy:
    Nurunnajib, Ahfazh Fauzy
    Wulan, Elis Ratna
    Awalluddin, Asep Solih
    Supian, Sudradjat
    Subiyanto, Subiyanto
    Powiązania:
    https://bibliotekanauki.pl/articles/1177721.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Cobb-Douglas Production Function
    Least Square Estimation
    Manufacturing Industry
    Newton Raphson Method
    Opis:
    In this paper, we discusses one of the production functions that shows the relationship between the level of output and the level of input combinations that called Cobb-Douglas production function. The estimation method used is the least square estimation with the settlement using Newton Raphson iteration. The Cobb-Douglas production function is applied to five selected manufacturing industries in West Sumatra. From the research result, the return to scale (RTS) of the rubber and plastic goods industry is 0.8424 and the return to scale of the food and beverage industry is 0.8496 in which the two industries produce RTS <1. Whereas return to scale of the publishing and printing industry is 1.0460, the return to scale of the textile industry is 1.0018, and the return to scale of the non-metallic mining industry is 1.3384. Of the three industries each produce RTS> 1.
    Źródło:
    World Scientific News; 2018, 101; 145-156
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modified Coulomb law
    Autorzy:
    Etkin, V. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1179008.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Coulomb and Newton laws
    attraction and repulsion
    dipole representation
    electric charge
    equilibrium
    interaction
    polarization
    unified field theory
    Opis:
    A field form of the Coulomb law is proposed, which describes the electric field as a function of the charge density gradient. This law is analogous in form to the modified Newton's law and similarly it reveals the possibility of attraction and repulsion of charges of the same sign as a function of the direction of the gradient of its density, and also the existence of electrostatic equilibrium. As an example of the use of this law, the erroneousness of the assertion that there are no free charges in the volume of the conductor is shown and a new treatment of the polarization processes is given as a result of the redistribution of charges of the same sign in it. A solution is proposed for the stability of atoms and their nuclei on the basis of electrostatic equilibrium and the wave concept of the structure of matter. Experimental confirmations of the proposed concept are presented.
    Źródło:
    World Scientific News; 2017, 87; 163-174
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Independence of mass from speed
    Autorzy:
    Etkin, V. E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1179663.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Newton's law
    acceleration process
    its irreversibility and efficiency
    its modification
    relativistic and invariant mass
    theory of relativity
    Opis:
    It is shown that the dependence of mass on speed contradicts the law of conservation of mass in isolated systems. This makes necessary the modification of Newton's 2nd law with the addition along with the mass of a correction factor, which would take into account the nonlinear dependence of the accelerating force on the speed, due to the existence of its limit. The reasons for the apparent increase in mass with speed , which make the concept of the relativistic mass superfluous
    Źródło:
    World Scientific News; 2017, 72; 150-158
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quantitative Support for Convergence of Intrinsic Energies from Applied Magnetic Fields and “Noise” Fluctuations of Newton’s Gravitational Value within the Human Brain
    Autorzy:
    Persinger, M. A.
    Saroka, K. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/411636.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Newton’s G
    “noise” fluctuations in G
    gravitational-magnetic energy equivalents
    cerebral magnetic field applications
    QEEG
    right hemisphere sensitivity
    theta-alpha band activity
    Opis:
    When the energy within the mass of the human brain that is associated with the intrinsic range in fluctuations of the Gravitational Constant (G) is set equal to the energy from a magnetic field (B) within the cerebral volume and solved for B, a value in the order of 20 to 50 nT is obtained. Quantitative Electroencephalographic (QEEG) and sLORETA (Low Resolution Electromagnetic Tomography) analyses of cerebral cortical activity during exposure to a range of applied rotating, frequency-modulated, transcerebral (between the two temporal lobes) magnetic fields between < 1 nT and 7000 nT while volunteers sat within a darkened, quiet chamber were completed. There was marked enhancement of power within the 4 Hz to 10 Hz band within the right caudal (cuneus) hemisphere while the ~5 to 20 nT averaged strength magnetic fields were applied but no significant responses at lesser or greater intensities. These results suggest that a physical process coupled to the source of the fluctuation (~10-15 m3kg-1s-2) in G may interact with right hemispheric activity within the range at which gravity waves have been estimated to interact with Schumann frequencies generated between the earth and ionosphere.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 19, 2; 181-190
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The theory of the Newton’s law of universal gravitation as a phenomenon of repulsion describing the proper state of the existing universe
    Autorzy:
    Borowski, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/1075708.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Borowski’s Theory of Gravitation
    Copernicus
    Einstein
    Newton
    classical theory of gravitation
    dark matter
    dark matter pressure
    pseudo-gravity
    quantum theory of gravity
    repulsion
    Opis:
    The paper describes the logical and at the same time the proper theory of the Newton’s law of universal gravitation in the universe. It presents the observed principles of “attraction” as a phenomenon of repulsion based on the difference of dark matter pressure. This paper proves in theory that the phenomenon of “gravitation”, as a phenomenon of attraction, does not exist (no mechanisms) and is mistakenly confused with the phenomenon of repulsion.
    Źródło:
    World Scientific News; 2019, 119; 218-223
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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