Modeling with Linear Equations

Gross Domestic Product (GDP) is the sum of income for all goods and services acquired in a given time period. This study develops a model of GDP data for the state of Johor between 2005-2016 using the Logistic Growth model. Long-term GDP equilibrium values are predicted using non-linear equations and tested with different parameters. Forecasts of GDP in the near future are also presented using the appropriate parameters.

4p longtimenosee09 08-04-2024 1 0   Download

The study has used the SEM-PLS to analyses the data. Due to the number of reasons the current study is using Structural Equation Modelling (SEM). SEM assumes that variables assed without any errors and have equal capability of consideration with linear and multiple regression analysis.

8p longtimenosee07 29-03-2024 4 2   Download

Ebook "Control and optimization of multiscale process systems" presents general methods for feedback controller synthesis and optimization of multiscale systems, illustrating their application to thin-film growth, sputtering processes, and catalytic systems of industrial interest. Beginning with an introduction to general issues on control and optimization of multiscale systems and a review of previous work in this area, the book discusses detailed modeling approaches for multiscale processes with emphasis on the theory and implementation of kinetic Monte Carlo simulation.

247p manmanthanhla0201 27-02-2024 4 1   Download

Ebook "Quantitative data analysis: A companion for accounting and information systems research" offers postgraduate and early career researchers in accounting and information systems a guide to choosing, executing and reporting appropriate data analysis methods to answer their research questions. It provides readers with a basic understanding of the steps that each method involves, and of the facets of the analysis that require special attention.

170p loivantrinh 29-10-2023 7 4   Download

Ebook Algebra and Trigonometry (Eighth edition): Part 1 presents the following content: Equations, Inequalities, and Mathematical Modeling; Functions and Their Graphs; Polynomial Functions; Rational Functions and Conics; Exponential and Logarithmic Functions.

455p trankora06 19-07-2023 6 3   Download

The nonlinear kinematic wave model is developed from the Saint Venant system of equations, which includes a nonlinear kinematic wave program that solves the system of equations by Newton's iterative method and a linear kinematic wave program for calculations initial flow value. The developed model is tested with sample problems and compared with the simulation results by Mike 11 model on Tra Khuc river.

13p viironman 02-06-2023 7 3   Download

Most kinds of robots in researches are in solid structures. In these models, Euler-Lagrange method is easily used to obtain dynamic equations for simulation and obtaining controllers. But, actually, there is always flexibility - even very small or remarkable – in all kinds of robots. This research solves a problem in modelling a complex robot with a flexible link-flexible inverted pendulum- by presenting a method to simplify that robot.

8p vidoctorstrange 06-05-2023 6 4   Download

The nonlinear stability analysis of a supercritical light water reactor (SCLWR) is presented using a nuclearcoupled thermal-hydraulic reduced-order model. The analytical model is developed by coupling 1. the pointkinetics equations with one group of delayed neutrons, 2. the fuel heat transfer and 3. a 1-D reduced order model which represents the heat absorption phenomenon during the coolant flow.

20p vironald 15-12-2022 15 5   Download

Part 1 of ebook "Essential mathematics for economics and business (Fourth edition)" provide readers with content about: mathematical preliminaries; the straight line and applications; simultaneous equations; non-linear functions and applications; financial mathematics;... Please refer to the part 1 of ebook for details!

276p langmongnhu 14-12-2022 9 3   Download

Lecture Automatic control systems technology - Lesson 8: Modeling physical systems with linear differential equations. After this presentation you will be able to: explain what a differential equation is and how it can represent dynamics in physical systems; identify linear and non-linear differential equations; identify homogeneous and non-homogenous differential equations;... Please refer to the content of document.

34p tieuvulinhhoa 22-09-2022 12 5   Download

In this work "An application of Razumikhin theorem to exponential stability for linear non-autonomous systems with time-varying delay", in the light of the Razumikhin stability theorem combined with the Newton–Leibniz formula, a new delay-dependent exponential stability condition is first derived for linear non-autonomous time delay systems without using model transformation and bounding techniques on the derivative of the time-varying delay function. The condition is presented in terms of the solution of Riccati differential equations.

6p runordie5 04-07-2022 7 2   Download

Parametrized surfaces of low degrees are very useful in applications, especially in Computer Aided Geometric Design and Geometric Modeling. The precise description of their geometry is not easy in general. Here we study some of the corresponding projective complex surfaces of low implicit degree (i.e. smaller than 12). We show that, generically up to linear changes of coordinates, they are classified by a few number of continuous parameters (called moduli).

18p runordie5 04-07-2022 8 2   Download

Lecture Power system operation and control - Lesson 8: Load and generator models, bus admittance matrix, power flow provide students with knowledge about high voltage transformer manufacturing in North America; power flow analysis; linear versus nonlinear systems; linear power system elements; nonlinear power system elements; nonlinear systems may have multiple solutions or no solution;...

29p hanthienngao 15-04-2022 9 1   Download

Lecture Power system stability - Lesson 8: Synchronous Machine Modeling provide students with knowledge about assuming a linear magnetic circuit; key simulation parameters; dynamic model development; rotor currents; final complete model; single-machine steady-state; stator flux differential equations;...

54p hanthienngao 15-04-2022 13 1   Download

In the mechanisms and machines operating at high speeds, the elastic vibration of links is inevitable. In this paper the dynamic modeling and controller design for a flexible four-bar mechanism are studied. The fully coupled non-linear equations of motion are obtained by using the Lagrange’s equations with multipliers for constrained multibody systems. The resulting differential-algebraic equations are solved using numerical methods. A simple PD controller is designed to reduce the influence of the elastic link on the desired motion.

5p cothumenhmong11 10-05-2021 22 3   Download

The nonlinear free vibration of embedded nanotubes under longitudinal magnetic field is studied in this paper. The governing equation for the nanotube is formulated by employing Euler–Bernoulli beam model and the nonlocal strain gradient theory. The analytical expression of the nonlinear frequency of the nanotube is obtained by using Galerkin method and the equivalent linearization method with the weighted averaging value. The accuracy of the obtained solution has been verified by comparison with the published solutions and the exact solution.

23p nguaconbaynhay11 07-04-2021 19 2   Download

Small-signal modeling is a common analysis technique in electronics engineering which is used to approximate the behavior of electronic circuits containing nonlinear devices with linear equations. It is applicable to electronic circuits in which the AC signals, the time-varying currents and voltages in the circuit, have a small magnitude compared to the DC bias currents and voltages.

5p larachdumlanat126 31-12-2020 20 2   Download

In this work our objective is to understand the failure behaviour of unreinforced masonry under in-plane cyclic loading. For this purpose we proposed a plasticity based interface model consists of a single yield surface criteria which is a direct extension of Mohr–Coulomb criteria with a tension cut and compression cap and a back stress vector is introduced as a mixed hardening law variable in the adopted yield surface to capture the unloading/reloading behaviour of masonry under cyclic loading.

16p trinhthamhodang9 10-12-2020 14 0   Download

In this article, the considered problem of Cauchy reaction diffusion equation of fractional order is solved by using integral transform of Laplace coupled with decomposition technique due to Adomian scheme. This combination led us to a hybrid method which has been properly used to handle nonlinear and linear problems. The considered problem is used in modeling spatial effects in engineering, biology and ecology. The fractional derivative is considered in Caputo sense. The results are obtained in series form corresponding to the proposed problem of fractional order.

8p dayhoctainha 10-09-2020 18 0   Download

In last decades, many scholars have studied the cost of hydropower plants based on the capacity and head. The different correlation equations obtained depend mostly on geographical locations and electro-mechanical characteristics. As Sub-Saharan Africa remains the region with the largest untapped hydropower potential, coupled with the need of expansion of Chinese energy companies, this paper aims to estimate the cost of hydropower projects financed and constructed by Chinese companies in Sub-Saharan Africa. The data used in this study were rigorously selected.

11p partimesinhvien 13-05-2020 25 3   Download