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All Journal MAJAMATH: Jurnal Matematika dan Pendidikan Matematika JURNAL PEMBELAJARAN DAN MATEMATIKA SIGMA (JPMS) International Journal of Applied Sciences and Smart Technologies Budimas : Jurnal Pengabdian Masyarakat International Journal of Basic and Applied Science Innovative: Journal Of Social Science Research Jurnal Pengabdian Kepada Masyarakat dan Desa (PASSA)
Tampubolon, Ferdinan Rinaldo
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Religion Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mathematics Physics Public Health Social Sciences Other

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Penggunaan Memetic Algorithm Pada Penjadwalan Mesin untuk Meminimumkan Emisi Karbon Tampubolon, Ferdinan Rinaldo; Devita, Rischa; Siagian, Sinta Marito; HS, Samaria Chrisna; Purba, Switamy Angnitha; Sitinjak, Anna Angela
JURNAL PEMBELAJARAN DAN MATEMATIKA SIGMA (JPMS) Vol 10, No 1 (2024)
Publisher : Fakultas Keguruan dan Ilmu pendidikan (FKIP) Universitas Labuhan Batu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpms.v10i1.5121

Abstract

Isu lingkungan merupakan topik penelitian yang sering dilakukan akhir-akhir ini, salah isu tersebut adalah adalah emisi karbon. Salah satu gas emisi karbon terbesar muncul dari tindakan-tindakan manusia seperti transportasi, pertambangan, aktifitas konstruksi dan industri. Dari sisi operasional, strategi penjadwalan terbukti secara signifikan mengurangi emisi karbon. Strategi ini dianggap lebih efektif dan rendah biaya. Flexible Job Shop adalah salah satu jenis penjadwalan mesin pada industri dan merupakan pengembangan dari Job Shop. Kebanyakan penelitian terkait Flexible Job Shop menggunakan waktu pemerosesan bilangan crisp, pada kenyataannya faktor keterlibatan manusia, kerusakan mesin, maupun penurunan kinerja mesin mengakibatkan adanya ketidakpastian pada waktu pemerosesan pekerjaan, penelitian ini akan menyelesaikan Penjadwalan Flexible Job Shop dimana waktu pemerosesan dalam bentuk bilangan grey dengan dua fungsi tujuan yaitu makespan dan emisi karbon. Memetic Algorithm yaitu kombinasi algoritma NSGA-II dan Tabu Search digunakan untuk menyelesaikan kasus ini, hasil yang diproleh kombinasi algoritma ini memberikan hasil yang lebih baik dibandingkan penggunaan satu algoritma.
Titik Equilibrium Bebas dari Penyebaran Hoax Pemilu Lewat Media Sosial Tiktok Sitinjak, Anna Angela; Purba, Switamy A.; Tampubolon, Ferdinan Rinaldo; Frananta S, Dimas; Sidabutar, Naqasya Asyrori
MAJAMATH: Jurnal Matematika dan Pendidikan Matematika Vol. 7 No. 2 (2024): Vol. 7 No. 2 September 2024
Publisher : Prodi Pendidikan matematika Universitas Islam Majapahit (UNIM), Mojokerto, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36815/majamath.v7i2.3209

Abstract

Election issues are sensitive information among the society because they relate to people's survival in terms of work, economy and education. Election hoaxes where information whose truth cannot be ascertained becomes a weapon used by certain parties to bring down political opponents. Social media such as TikTok is a media that is often used to spread hoaxes because TikTok social media users come from various ages and there is no distance or time between users. In this paper, a mathematical model is presented to see how the equilibrium point is to be free from hoax based on the basic reproduction number R0. The spread of hoaxes on social media occurs if R0 > 1 and does not occur if R0 < 1. The model approach used is the SEIR mathematical model because it is seen that there are people who receive hoax videos (exposed) and then spread them without finding out the truth (infected), and users with this condition it needs to be recovered. The method used in this research is a literature review. The results obtained show that the mathematical model presented shows that the basic reproduction number R0 is zero (R0 < 1). This means that there will be no spread of election hoaxes
Implementasi Software Geogebra Dalam Peningkatan Visualisasi Siswa Pada Pembelajaran Geometri Di SD Muhammadiyah 6 Medan Tampubolon, Ferdinan Rinaldo; Sinambela, Lamtiur; Khairani, Suci; Ginting, Agustina; Cholish; Saragih, Yessy Dea Sylvia
Jurnal Pengabdian Kepada Masyarakat dan Desa Volume 1, Nomor 2, Januari 2024
Publisher : Politeknik Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51510/passa.v1i2.1477

Abstract

Geometri merupakan salah satu pelajaran pada matematika yang melibatkan benda baik berupa bangun datar maupun bangun ruang. Hal ini membutuhkan kemampuan visualisasi yang baik oleh siswa. Kemampuan visualisasi ini dapat dirangsang dengan menggunakan alat-alat peraga baik yang konvensional maupun menggunakan teknologi. Tanpa adanya alat peraga yang memadai maka siswa akan mengalami kesulitan dalam memahami pelajaran Geometri. SDS Muhammadiyah 6 sebagai mitra dalam pengabdian ini memerlukan penggunaan alat peraga maupun teknologi dalam proses pembelajaran Geometri. Dengan demikian fokus dalam pengabdian ini adalah memberikan alat peraga dan pelatihan salah satu teknologi berupa software Geogebra. Geogebra dapat digunakan untuk menampilkan bangun datar maupun bangun ruang yang lebih interaktif sehingga mengembangkan visualisasi siswa. Penggunaan software ini juga sejalan dengan kurikulum merdeka belajar yang menekankan akan penggunaan teknologi dalam proses pembelajaran. Pengabdian ini dimulai dengan memberikan pembelajaran dengan menggunakan alat peraga dan dilanjutkan dengan pengenalan software Geogebra untuk siswa tingkat SD. Hasil dari pengabdian ini memberikan pengalaman yang baru dan meningkatkan minat siswa terhadap matematika khususnya pembelajaran Geometri dan penggunaan IPTEK
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.
Peningkatan Keterampilan Pemuda Gereja Berbasis Teknologi Visual Pada Pelayanan Ibadah di HKBP Perumnas Mandala Kec. Medan Denai Provinsi Sumatera Utara HS, Samaria Chrisna; Siagian, Sinta Marito; Tampubolon, Ferdinan Rinaldo; Ginting, Agustina; Saragih, Yessy Dea Sylvia
BUDIMAS : JURNAL PENGABDIAN MASYARAKAT Vol. 7 No. 1 (2025): BUDIMAS : Jurnal Pengabdian Masyarakat
Publisher : LPPM ITB AAS Indonesia Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29040/budimas.v7i1.15077

Abstract

The development of science and technology really supports every human activity which makes it easier to carry out activities such as the use of visual technology such as the use of the Infocus text viewer. This Program aims to provide knowledge and increase skills in the application of visual technology and the use of the Easy Worship application in the implementation of worship activities at the HKBP PERUMNAS Mandala church to the young people of the church. This activity can improve the skills of church youth in carrying out worship services with a more efficient budget for providing church worship paper. The method used in this activity will begin with an introduction to the EasyWorship (EW) Software and training on the use of this technology and its application in displaying worship services on the EW Software. This training was carried out using group discussion methods and mentoring by the implementation team. Based on this activity, participants were able to understand the application and use of it on laptops. Furthermore, in terms of increasing innovation and creativity of HKBP Mandala youth, the implementing team carried out the activity of handing over goods to the church management.
Comparison of the mass composition of Coconut Shell in TiO2 towards its characterization for supercapacitor applications Siagian, Sinta Marito; H. S, Samaria Chrisna; Tampubolon, Ferdinan Rinaldo; Juanta, Palma
International Journal of Applied Sciences and Smart Technologies Volume 06, Issue 1, June 2024
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/ijasst.v6i1.7417

Abstract

This study aims to evaluate the effect of the mass ratio on the capacitance of electrodes made from TiO-based composites. The composites were synthesized using a wet chemical method and applied using the doctor blade technique, incorporating TiO2 and rGO derived from coconut shell activated carbon. Our findings reveal that at a 1:1 mass ratio, the atomic composition of Ti and O was non-uniform, although there was evident adherence of TiO2 elements to the sample surface. In contrast, at mass ratios of 1:3 and 1:5, a decrease in the concentration of Ti atoms and an increase in O atoms were observed, indicating a reduction in Ti oxidation. SEM analysis further revealed that particle size significantly impacts capacitance: smaller particle sizes yielded higher capacitance. In the 1:1 mass variation, the discharge process was protracted, taking up to 29.3 minutes and generating an electrical energy of 0.000413 joules with a capacitance of 489 µF. These insights are pivotal for optimizing the composition and mass ratio, fostering the development of electrode materials characterized by enhanced capacitance and energy efficiency. Such advancements hold promising potential for a range of applications in the energy storage sector.Keywords: Activated Carbon, Capasitance, Supercapacitor
Multi-Criteria As Decisions Making Menggunakan Program Linier Dan Integer Programming Devita, Rischa; Tampubolon, Ferdinan Rinaldo
Innovative: Journal Of Social Science Research Vol. 1 No. 2 (2021): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v1i2.12177

Abstract

The decision to choose stock assets must be analyzed properly with careful consideration as many series of alternatives so that the results of the selection maximize the achievement of expected profit or benefit. Several alternative decision choices are needed for comparison so that the decision to be taken can achieve its target, namely the right decision to maximize the success. Therefore, a comprehensive approach is needed in choosing a decision so that the results of the decision are in accordance with the success of a profit or benefit. Decision making with several criteria (Multi-criteria as decisions making) is one of the approach methods that can be used to sort out between decisions that are more appropriate or in accordance with existing conditions. Basically, the purpose of this method is so that decision makers can determine the right decision in the situation and conditions experienced with which decision alternative is more appropriate. There are several criteria for an object to be selected and then written in a linear mathematical modeling. The selection of shares to be purchased using the objective function of maximizing returns, and making the Mean Absolute Deviation risk function, a constraint function.
Co-Authors Cholish Devita, Rischa Dimas Frananta Simatupang Ginting, Agustina H. S, Samaria Chrisna HS, Samaria Chrisna Juanta, Palma Khairani, Suci Purba, Switamy A. Purba, Switamy Angnitha Rischa Devita Saragih, Yessy Dea Sylvia Siagian, Sinta Marito Sidabutar, Naqasya Asyrori Sinambela, Lamtiur Sitinjak , Anna Angela