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All Journal RELE: Rekayasa Elektrikal dan Energi Jurnal Teknik Elektro ORBITA: Jurnal Pendidikan dan Ilmu Fisika Jurnal Abdi Ilmu JURNAL PEMBELAJARAN DAN MATEMATIKA SIGMA (JPMS) International Journal of Applied Sciences and Smart Technologies Jurnal VORTEKS Jurnal Abdi Mas Adzkia ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) International Journal of Basic and Applied Science BERKAT: Jurnal Pemberdayaan Masyarakat Jurnal Pengabdian Kepada Masyarakat Bhinneka Tunggal Ika: Jurnal Pengabdian Kepada Masyarakat Jurnal Pengabdian Kepada Masyarakat dan Desa (PASSA)
HS, Samaria Chrisna
Jurusan Teknik Elektro, Politeknik Negeri Medan
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Journal : International Journal of Basic and Applied Science

 1 
Stationary and non-stationary method for solving system of linear equation Ferdinan Rinaldo Tampubolon; Sinta Marito Siagian; Samaria Chrisna; Rischa Devita; Indah Nurhidayati
International Journal of Basic and Applied Science Vol. 12 No. 1 (2023): June: Basic and Applied Science
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/ijobas.v12i1.173

Abstract

System of Linear Equation  where  is a non-singular and square matrix .  Method for solving System of Linear Equation consist of direct method and indirect method. Further indirect methods were divided into two, that is stationary and non-stationary. This research will conduct a comparative study of several indirect methods and direct methods in solving several cases of Linear equation systems. Some methods that will be compared in this research are jacobi, gauss-seidel, SOR, conjugate and biconjugate gradient. Testing several methods for some kind of matrix is useful to understand the characteristics of each method in solving different types of matrices. The result show that non-stationary such as conjugate and biconjugate has a less computation and faster to convergence compared to stationary method for several symmetric and non-symmetric matrices
Parallel Batch Processor Machine Scheduling Using Multi-Population SPEA-II Algorithm Tampubolon, Ferdinan Rinaldo; Siagian, Sinta Marito; Samaria Chrisna HS; Rischa Devita; Sitinjak , Anna Angela
International Journal of Basic and Applied Science Vol. 14 No. 1 (2025): Computer Science, Engineering, Basic and Applied mathematics Science
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/ijobas.v14i1.653

Abstract

The increasing competition in the industrial sector requires companies to provide more optimal services, particularly in terms of production speed by increasing machine utilization. This can be achieved by implementing parallel batch scheduling. In conventional scheduling, a machine is only able to handle one job at a time, whereas in parallel batch scheduling, a machine can process a group of jobs simultaneously based on its capacity. Flexible Job Shop with parallel batch processor has been studied by several researchers, but the objective function has generally been limited to minimizing makespan. This research aims to minimize multi objective function that are energy consumption and makespan by using the Modified Strength Pareto Evolutionary Algorithm-II (SPEA2). Modifications of the algorithm are conducted by applying multi-population that run in parallel so that the optimization process can avoid local optima. The results of the research show that Multi-Population SPEA2 provides more optimal results compared to classical SPEA2 and benchmarks from previous research.
Co-Authors Abdullah Abdullah Adam, Muhammad Agustina Ginting Ahmad Taufik Rawi Cholish Cholish Devita, Rischa Faisal Lubis Ferdinan Rinaldo Tampubolon Gunoro Haq, Moh Zainul Indah Nurhidayati Juli Iriani, Juli Karima Indah, Sarah Lamtiur Sinambela MARIA BINTANG Meidi Wani Lestari, Meidi Wani Nainggolan, Tito Karnavia Palma Juanta Purba, Angelia Purba, Arlina Pratiwi Purba, Switamy Angnitha Rischa Devita Rischa Devita Sarah Karima Indah Siagian, Sinta Marito Simatupang, Eva Sinta Marito Siagian Sitinjak , Anna Angela Sri Indah Rezkika Suci Khairani Susaidin Sutan Pardede Tampubolon, Ferdinan Rinaldo Yessy Dea Sylvia Saragih yuvina