This nal project discusses the high order iterative method based on a quadrature rule for determining a simple root of nonlinear equations. The order of the method depends on the number of quadrature nodes used. If the number of quadrature nodes used is one, we obtains Newton method of the order two, If the number of quadrature nodes used is two, we obtain Newton-Trapezoid methods with th…
Biocoagulant is a natural coagulant that has an active substance and has a role as cationic which is able to bind colloidal particles in water. Chitosan is a non-toxic, easy-to-degrade and polyelectrolyte biocogulant that can be found in crustacean animals especially in crabs (Brachyura). The availability of crab shell waste has a huge potential to be used as raw material for making chitosan. H…
This final project discusses a general algorithm used for determining the nu- merical approximations to derivatives of any order. The algorithm is based on linear combinations of Taylor series for nonequispaced nodes. The algorithm also gives truncation and round-off errors for the numerical approximations. Keywords: System of linear equations, matriks, Taylor series, numerical app- roxima…
Produced water has a complex composition and more than 40% is discharged into the environment. Constructed wetlands is one of the water produced treatment systems that use vegetation, media, and microorganisms for pollutants removal. The objectives of this research were to determine the efficiency of pollutants parameter removal and to assess the effect of residence time of COD, NH3 and TDS. Su…
The population of Pekanbaru City grows increasingly every year, especially in Bukit Raya Sub-district. The higher number of motorcycle used by the people as a transportation directly affect the amount of CO2 emissions generated from each vehicles. This study aims to calculate the volume of vehicles and predict CO2 emissions from the number of vehicles in Bukit Raya District. The methodology use…
This final project discusses a family of four-step iteration method with six parameters which requires three function evaluations and one derivative function evaluation. Analytically it is showed that the iterative method has the optimal order of convergence eight, with the efficiency index is 1:682 which is optimal according to Kung and Traubs conjecture. Numerical comparisons shows that …
Drilling mud wastewater is one of Hazardous and Toxic Substance from drilling activities by oil-gas company contain by phenol, H2S (dissolved sulfide) and COD with concentration 43,3 mg/L; 7,332 mg/L and 3400 mg/L. In this research is using Advanced Oxidation Processes (AOPs) ozone based with oxidation potential value 2,08 eV. Ozonation is performed by injecting ozone on reactor with continious…
This final project discusses a family of two-step iterative method, which is a correction of the article Ogbereyivwe dan Atoma [International Journal of Mathematics and Statistics Invention, 2 (2014), 24–27]. Analytically it is showed, using the Taylor expansion and geometric series, that the iterative method has the convergence of order fourth. Numerical comparisons show that this metho…
This final project discusses the parameter estimators of middle cencored data with exponential distribution having expectation E(x) = 1/θ. Parameter θ is estimated using the method of maximum likelihood. Because the result of maximum estimator ˆθ cannot be obtained explicitly, then for solution of maximum estimator θ is done numerically using an iterative procedure h(θ). Next, the co…
This final project discusses the quadrature method for solving nonlinear Fredholm integral equations of the second kind. Quadrature method provides an approximate solution approaching to the exact solution. Then, the error of quadrature method is discussed. The numerical simulation results show that by using quadrature method, nonlinear Fredholm integral equation of the second kind is solv…
The CNC machine (Computer Numerically Controlled) is a machine tool equipped with a computer-controlled mechanical and control system capable of reading N, G, F, T, and other code instructions. The codes will be instructed to the CNC machine interface system, so that the machine can work in accordance with the program listings that have been made. In general, the selling price of this machine i…
This final project discusses the mathematical model of love and happiness with affair. In this model, system of differential equations is used to describe quality of each individual. There are four conditions observed, in which each case is analyzed using Routh-Hurwitz criterion. Furthermore, simulation is given to show the behaviour and the stability of each case. Keywords: Differential e…
In the development of manufacture industry the use of composite materials began to be widely used. One of them is composite by using fiber glass or fiber carbon, because of its characteristic that can be designed close to certain needs. In addition the specific strength and stiffness are far exceeding the engineering material in general. This research uses carbon fiber composite material as veh…
This nal project discusses an error sums from roots of positive integers but not a perfect square. The error sum functions dened by "( √ D) = Σ1 m=0(−1)m(qm √ D − pm) and "( √ D) = Σ1 m=0(qm √ D − pm), are considered where D is positive integers but not a perfect square and pm=qm denotes the convergence of the continued fraction expansion of √ D. This is …
This study focuses attention on the efforts to reveal and analyze the effect of leadership and organizational culture with work ethic and performance of employees either directly or indirectly on tax services office pratama in Pekanbaru. Primary data were collected using a questionnaire as a tool to prove the results. The subjects of this study were employees in Pekanbaru covering on tax…
This research is aimed to design the shape of transmission connection between coconut husk decomposer machine and a motorcycle engine, so it can be operated in coconut plantation areas. Preliminary in this research is based on Nuriyadi and Cahyono who designed and tested a coconut husk decomposer machine, which used and electric motor. If the decomposer of coconut husk machine is operated in a …
The purpose of this research was to know about the influence of personality, leadership and organizational culture to on organizational citizenship behavior. This study was conducted on 107 people lecturer at State Islamic University Syarif Kasim Sultan Riau (UIN SUSKA Riau) who has filled four scale research that personality scale, the scale of Organizational Culture, Leadership scale, and th…
Electricity has been used by industry, offices, as well as for the general public and individuals that is greatly improved in demand source of theelectricity can be obtained from solar energy converted into electrical energy by utilizing solar panels. The solar power can be utilized as an alternative electric energy, in utilizing this solar energy is by using a photovoltaic process,which conver…
Some things that become consideration in generating electrical energy is to produce big enough energy, economical cost and not have negative impact to environment. In this test has been made mechanical system that can move solar panel to the sun and Know the comparison of solar panel power output between solar panels Dynamics and static solar panels. The dynamic solar panel output power and sta…
Generally, coconut farmers in areas of Indragiri Hilir have not exploited waste plantation of coconut in the form of coir. There is only a small portion of them utilize the coir to be processed further, but the processing is manually or traditionally. Whereas coconut husk if it is processed properly that can increase the economic value of the coir and also can support the economic community. To…