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Endang Lily
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PENYUSUNAN JADWAL PETUGAS SEKURITI DENGAN PROGRAM GOL Marbun, Herlina; Lily, Endang; Gamal, M. D. H.
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Abstract

This article discusses a goal programming technique for security rostering. The goal programming used is the weighted or non-preemptive. This technique is implemented to solve a case study in a real life problem of security rostering in a construction company. The results of computation with LINGO show that security rostering by goal programming is better than manual rostering.
SOLUSI POLINOMIAL TAYLOR DARI PERSAMAAN INTEGRAL VOLTERRA Nasution, Lisa Anna; Deswita, Leli; Lily, Endang
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 2, No 1 (2015): Wisuda Februari 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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We discuss a polynomial solution of linear and nonlinear Volterra integral equations by stating their solutions in the form of a Taylor series. Furthermore, the coefficients of the Taylor series are determined by solving a system of linear equation. Then by inserting these coefficients into the Taylor series, we obtained a polynomial solution of linear and nonlinear Volterra integral equations in a simple form.
MODEL PERSEDIAAN PROBABILISTIK YANG MEMUAT VARIABEL LEAD TIME DENGAN PENDEKATAN DISTRIBUSI NORMAL Nopriadi '; T. P. Nababan; Endang Lily
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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This article  discusses how to minimize total inventory cost of probabilistic model (Q,r) where condition of back order and crashing lead time are allowed. Normal distribution approach is used when the demand during the lead time is normally distributed. Themodel is used to determine when the order is made (r) and how much the quantity Q to be ordered to minimize the total cost of inventory.
MODIFIKASI METODE DEKOMPOSISI ADOMIAN UNTUK MENYELESAIKAN PERSAMAAN GELOMBANG NONLINEAR Widiya Fitrina Sari; Leli Deswita; Endang Lily
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 1 (2014): Wisuda Februari 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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This article discusses the modification of Adomian decomposition method to solve anonlinear wave equation. Some numerical examples are used to show the effectivenessof the method. The numerical result show that the solution obtained through themodification of Adomian decomposition method is better than the solutions obtainedusing Adomian decomposition method.
PENYELESAIAN SISTEM PERSAMAAN INTEGRAL VOLTERRA DENGAN METODA DEKOMPOSISI ADOMIAN Okmi Zerlan; M. Natsir; Endang Lily
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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This article  discusses  the construction of the systems of Volterra integral equations from extended Lane-Emden equation. The system of Volterra integral equations of the settlement is determined by using the Adomian Decomposition Method. The Adomian decomposition method gives reliable result for analytic approximate solutions of these systems. The results are supported by investigating the example problems.
DERAJAT VERTEKS GRAF TERHADAP HIMPUNAN VERTEKS Fauziah Arani; Rolan Pane; Endang Lily
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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This article  discusses  methods  to  define  the degrees of the  graph  vertex. These  methods include  union, intersection, and  difference  symmetric  from  vertex set. Based on this definition the relation  between the  degrees  of the graph  vertex and  vertexset  is  obtained. An example is given to illustrate the implementation of the methods.
FAKTORISASI POLINOMIAL ALJABAR DENGAN MENGGUNAKAN METODE EUCLIDEAN DAN FAKTOR PERSEKUTUAN TERBESAR Rora Oktafia; Sri Gemawati; Endang Lily
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 1 (2014): Wisuda Februari 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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This article discusses a factorization of algebraic polynomial of order n using theEuclidean method and the greatest common factor. The new polynomial is equivalentto the original polynomial. The new polynomial is formed by multiplication of the rootsof the original polynomial.
OPTIMISASI PENYUSUNAN JADWAL MATA KULIAH DENGAN PROGRAM GOL Samuel Jun Harli; Endang Lily; M. D. H. Gamal
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 2, No 1 (2015): Wisuda Februari 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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This paper discusses a mathematical modeling to establish a course schedule opti-mally. Goal programming model formed is utilized to maximize the satisfaction of the desired values while still meeting the specied limits: limits on days, the time span, the number of faculties, the number of rooms allocated, the number of stu-dents taking the courses, the number and type of courses that will be scheduled.
MODEL TINGKAT PRODUKSI EKONOMIS DENGAN PROSES PENGERJAAN ULANG DAN PADA TINGKAT PELAYANAN TERJADI KEKURANGAN PERSEDIAAN Reza Budiman; Tumpal P. Nababan; Endang Lily
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 2, No 1 (2015): Wisuda Februari 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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This article studies the economic production quantity (EPQ). During the production process, the failures occur and reworking is conducted to minimize the total production cost. This study is a review of Chiu et. al [Mathematical and Computational Applications, 11(2006): 75-84]. A numerical example is given to explain the problem discussed.
MEMBANDINGKAN ALGORITMA D’SATUR DENGAN ALGORITMA VERTEX MERGE DALAM PEWARNAAN GRAF TAK BERARAH Daratun Nasihin; Endang Lily; M. D. H. Gamal
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 2, No 1 (2015): Wisuda Februari 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Abstract

This article provides an undirected graph vertex coloring. Graph vertex coloring can be done by using the coloring algorithm, including d’satur algorithm and vertex merge algorithm. Of the two algorithms, a more efficient algorithm is determined that generates chromatic number χ(G) which is the minimum or produces fewercolors. This article is a review of the work of Handrizal et. al [Journal of Computer Science 7(5):664-670].
Co-Authors Daratun Nasihin Fauziah Arani Herlina Marbun Leli Deswita Lisa Anna Nasution M. D. H. Gamal M. Natsir Nopriadi ' Okmi Zerlan Reza Budiman Rolan Pane Rora Oktafia Samuel Jun Harli Sri Gemawati T. P. Nababan Tumpal P. Nababan Widiya Fitrina Sari