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Ditemukan 8 dokumen yang sesuai dengan query
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Biebler, Karl-Ernst
"This book presents methods of mathematical modeling from two points of view. Splines provide a general approach while compartment models serve as examples for context related to modeling. The preconditions and characteristics of the developed mathematical models as well as the conditions surrounding data collection and model fit are taken into account. The substantial statements of this book are mathematically proven. The results are ready for application with examples and related program codes given.In this book, splines are algebraically developed such that the reader or user can easily understand and vary the numerical construction of the different kinds of spline functions. The classical compartment models of the pharmacokinetics are systematically analyzed and connected with lifetime distributions. As such, parameter estimation and model fit can be treated statistically with a varied minimum chi-square method. This method is applicable for single kinetics and also allows the calculation of average kinetics.--"
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Singapore: World Scientific, 2013
511.8 BIE s
Buku Teks  Universitas Indonesia Library
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Kiuntoro Hongsen
"ABSTRAK
Teori UI-Beam adalah suatu teori baru dalam Metode Elemen Hingga (MEH) yang merupakan modifikasi dari teori Balok Timoshenko. Sementara itu Isogeometrik sendiri adalah pengembangan dari MEH yang menggunakan fungsi dari B-Splines, dimana fungsi ini menggantikan shape function dalam MEH. Kelebihan dari Isogeometrik adalah dapat menghasilkan kelengkungan geometri yang sempurna walaupun hanya menggunakan sedikit elemen. Skripsi ini berfokus pada kasus balok di atas pondasi elastis variabel tunggal, dimana hasil antara MEH dan Isogeometrik akan dibandingkan dengan eksak.

ABSTRACT

The theory of UI-Beam happens to be the new thesis within the Finite Element Method (FEM) which is a modification of the Timoshenko Beam. Meanwhile, Isogeometric Method is a development of FEM itself that it uses B-Spline function to replace the shape function in FEM. The capability of Isogeometric Method to produce a perfect geometry curvature albeit using only a few elements becomes its adequate advantage. This paper concerns about single variable beam on the elastic foundation case which, later on, will lay a comparison between FEM, Isogeometric Method, the exact solution forward."

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2019
S-Pdf
UI - Skripsi Membership  Universitas Indonesia Library
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Hollig, Klaus
"The finite element method (FEM) has become the most widely accepted general-purpose technique for numerical simulations in engineering and applied mathematics. Principal applications arise in continuum mechanics, fluid flow, thermodynamics, and field theory. In these areas, computational methods are essential and benefit strongly from the enormous advances in computer technology. B-splines play an important role in approximation and geometric modeling. They are used in data fitting, computer-aided design (CAD), automated manufacturing (CAM), and computer graphics.
Finite Element Methods with B-Splines describes new weighted approximation techniques, combining the computational advantages of B-splines and standard finite elements. In particular, no grid generation is necessary, which eliminates a difficult and often time-consuming preprocessing step. The meshless methods are very efficient and yield highly accurate solutions with relatively few parameters. This is illustrated for typical boundary value problems in fluid flow, heat conduction, and elasticity.
Topics discussed by the author include basic finite element theory, algorithms for B-splines, weighted bases, stability and error estimates, multigrid techniques, applications, and numerical examples. The text is essentially self-contained and easily accessible to graduate students in mathematics, engineering, and computer sciences. The new concepts are also of interest to academic researchers and to scientists in industry who are developing finite element software. Some basic facts on functional analysis and partial differential equations, which are required, are listed in the appendix."
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Philadelphia : Society for Industrial and Applied Mathematics, 2003
e20443052
eBooks  Universitas Indonesia Library
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"kabupaten tertinggal merupakan kabupaten yang masyarakat serta wilayhnya relatif kurang berkembang dibandingkan daerah lain dalam skala nasional berdasarkan kategori perekonomian masyarakat, Sumber Daya Manusia (SDM), infrastruktur, kemampuan keuangan daerah, aksebilitas, dan karakteristik daerah. pengklasifikasian kabupaten tertinggal tidaklah mudah karena melibatkan variable dan observasi dalam jumlah yang cukup banyak. selain itu diantara variable yang digunakan memiliki keterkaitan antara satu dengan yang lain. MARS adalah salah satu metode pengklasifikasian yang mampu menangani data berdimensi tinggi dengan pola data yang tidak diketahui sebelumnya. dari model MARS yang dibangun, terdapat lima variable utama yang berpengaruh terhadap ketertinggalan kabupaten diantaranya adalah pengeluaran konsumsi per kapita, angka harapan hidup, persentase rumah tangga pengguna listrik, rata-rata jarak dari kantor desa/kelurahan ke kantor kabupaten yang membawahi, serta jumlah desa yang memiliki pasar tanpa bangunan permanen. akurasi dari model MARS yang terbentuk sangan tinggi, yakni mencapai 97,83 persen dan dapat dipergunakan untuk melakukan prediksi ketertinggalan kabupaten."
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JASKS 7:2 (2015)
Artikel Jurnal  Universitas Indonesia Library
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Alfina Wijaya
"Premi adalah sejumlah uang yang ditetapkan oleh perusahaan asuransi atau perusahaan reasuransi dan disetujui oleh pemegang polis untuk dibayarkan. Hal tersebut sesuai dengan perjanjian asuransi atau perjanjian reasuransi. Dalam penetapan tarif premi asuransi kendaraan bermotor, perusahaan asuransi memperhitungkan eksposur risiko yang diterima kendaraan bermotor untuk mengestimasi jumlah klaim. Pada umumnya, perusahaan asuransi kendaraan bermotor hanya memperhitungkan faktor durasi kontrak asuransi dalam memperhitungkan eksposur risiko. Namun, pada kenyataannya terdapat faktor lain yang memengaruhi risiko terjadinya kecelakaan, salah satunya adalah jarak tempuh kendaraan. Faktor risiko jarak tempuh telah dipertimbangkan pada asuransi Pay-As-You-Drive (PAYD). Pada penelitian ini, dilakukan penghitungan eksposur risiko pada kendaraan bermotor dengan memperhitungkan jarak tempuh kendaraan dan durasi kontrak asuransi. Tujuannya adalah untuk melihat efek simultan yang dihasilkan oleh jarak tempuh dan durasi kontrak asuransi sebagai kovariat terhadap variabel respons jumlah klaim menggunakan Generalized Additive Model (GAM). GAM digunakan untuk menangkap kemungkinan adanya hubungan non-linear antara kovariat dengan variabel respons. Dalam penelitian ini, GAM dikonstruksi dengan cubic splines dan untuk mengestimasi koefisien model, digunakan metode Penalized Iteratively Reweighted Least Squares (PIRLS). Setelah koefisien model diestimasi, GAM dapat digunakan untuk memprediksi nilai frekuensi klaim. Nilai frekuensi tersebut dapat dimanfaatkan untuk menentukan relativitas harga premi terhadap reference premium. Reference premium adalah nilai premi yang diterapkan ketika diasumsikan tidak ada pengaruh dari kovariat. Selanjutnya, GAM diimplementasikan pada data klaim asuransi kendaraan bermotor untuk menentukan tarif premi.

Premium is an amount of money set by an insurance company or reinsurance company and agreed upon by the policyholder to be paid based on an insurance or reinsurance policy. In establishing premium rates for motor vehicle insurance, insurance companies consider the risk exposure associated with motor vehicles to calculate the estimated number of claims. Generally, motor vehicle insurance companies only consider the duration of the insurance contract when calculating risk exposure. However, there are other factors that influence the risk of accidents, one of which is the distance traveled by the vehicle. The mileage risk factor has been considered in Pay-As-You-Drive (PAYD) insurance. In this study, risk exposure in motorized vehicles was calculated by considering the distance traveled by the vehicle and the duration of the insurance contract. The objective is to examine the simultaneous effects of mileage and insurance contract duration as covariates on the response variable of claim amount using the Generalized Additive Model (GAM). GAM is used to capture the possibility of a non-linear relationship between the covariates and the response variable. In this study, GAM is constructed with cubic splines and to estimate the model coefficients, the Penalized Iteratively Reweighted Least Squares (PIRLS) method is used. Once the model coefficients are estimated, the GAM can be used to predict claim frequency values. The frequency value can be used to determine the relativity of the premium price to the reference premium. The reference premium is the premium value that is applied when it is assumed that there is no influence from covariates. Furthermore, GAM is implemented on motor vehicle insurance claim data to determine premium rates."
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Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2023
S-pdf
UI - Skripsi Membership  Universitas Indonesia Library
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Chui, Charles K.
"The subject of multivariate splines has become a rapidly growing field of mathematical research. The author presents the subject from an elementary point of view that parallels the theory and development of univariate spline analysis. To compensate for the missing proofs and details, an extensive bibliography has been included. There is a presentation of open problems with an emphasis on the theory and applications to computer-aided design, data analysis, and surface fitting. Applied mathematicians and engineers working in the areas of curve fitting, finite element methods, computer-aided geometric design, signal processing, mathematical modelling, computer-aided design, computer-aided manufacturing, and circuits and systems will find this monograph essential to their research."
Philadelphia: Society for Industrial and Applied Mathematics, 1991
e20451254
eBooks  Universitas Indonesia Library
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Averbuch, Amir Z.
"This book provides a practical guide, complete with accompanying Matlab software, to many different types of polynomial and discrete splines and spline-based wavelets, multiwavelets and wavelet frames in signal and image processing applications.
In self-contained form, it briefly outlines a broad range of polynomial and discrete splines with equidistant nodes and their signal-processing-relevant properties. In particular, interpolating, smoothing, and shift-orthogonal splines are presented. "
Switzerland: Springer Cham, 2019
e20501499
eBooks  Universitas Indonesia Library
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Keskin, Ali Ümit
"This book is designed to supplement standard texts and teaching material in the areas of differential equations in engineering such as in Electrical ,Mechanical and Biomedical engineering. Emphasis is placed on the Boundary Value Problems that are often met in these fields.This keeps the the spectrum of the book rather focussed .The book has basically emerged from the need in the authors lectures on “Advanced Numerical Methods in Biomedical Engineering” at Yeditepe University and it is aimed to assist the students in solving general and application specific problems in Science and Engineering at upper-undergraduate and graduate level.Majority of the problems given in this book are self-contained and have varying levels of difficulty to encourage the student. Problems that deal with MATLAB simulations are particularly intended to guide the student to understand the nature and demystify theoretical aspects of these problems.
Relevant references are included at the end of each chapter.
Here one will also find large number of software that supplements this book in the form of MATLAB script (.m files). The name of the files used for the solution of a problem are indicated at the end of each corresponding problem statement.
There are also some exercises left to students as homework assignments in the book. An outstanding feature of the book is the large number and variety of the solved problems that are included in it. Some of these problems can be found relatively simple, while others are more challenging and used for research projects. All solutions to the problems and script files included in the book have been tested using recent MATLAB software.
The features and the content of this book will be most useful to the students studying in Engineering fields, at different levels of their education (upper undergraduate-graduate)."
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Switzerland: Springer Cham, 2019
e20510448
eBooks  Universitas Indonesia Library