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All Journal Saintia Matematika SITEKIN: Jurnal Sains, Teknologi dan Industri Jurnal Sains Matematika dan Statistika Edumatsains Jurnal Ilmiah METHONOMI Sinkron : Jurnal dan Penelitian Teknik Informatika Jurnal Masharif al-Syariah: Jurnal Ekonomi dan Perbankan Syariah Desimal: Jurnal Matematika International Journal of Supply Chain Management JOURNAL OF SCIENCE AND SOCIAL RESEARCH MABIS: Manajemen dan Bisnis Jurnal Manajemen dan Bisnis MES: Journal of Mathematics Education and Science Jurnal Ilmiah Manajemen Kesatuan Jurnal Ilmiah Akuntansi Kesatuan Jurnal Penelitian Ekonomi Akuntansi (JENSI) ASSET: Jurnal Manajemen dan Bisnis Jurnal Suluh Pendidikan Journal of Research in Mathematics Trends and Technology Jurnal Ekonomi Bisnis, Manajemen dan Akuntansi (JEBMA) FARABI: Jurnal Matematika dan Pendidikan Matematika Jurnal Manajemen dan Bisnis International Journal of Educational Review, Law And Social Sciences (IJERLAS) International Journal of Economic, Business, Accounting, Agriculture Management and Sharia Administration (IJEBAS) Jurnal Akutansi Manajemen Ekonomi Kewirausahaan (JAMEK) International Journal of Social Science, Educational, Economics, Agriculture Research, and Technology (IJSET) MATHunesa: Jurnal Ilmiah Matematika Journal of Mathematics Technology and Education Journal of Management Analytical and Solution Asian Journal of Management Analytics ARZUSIN: Jurnal Manajemen dan Pendidikan Dasar Return : Study of Management, Economic and Bussines Multiverse: Open Multidisciplinary Journal International Conference on Health Science, Green Economics, Educational Review and Technology (IHERT) Innovative: Journal Of Social Science Research Enrichment: Journal of Multidisciplinary Research and Development Neraca: Jurnal Ekonomi, Manajemen dan Akuntansi Jurnal Arjuna : Publikasi Ilmu Pendidikan, Bahasa dan Matematika Alkhidmah: Jurnal Pengabdian dan Kemitraan Masyarakat Journal of Business Management Neraca Manajemen, Akuntansi, dan Ekonomi Cendikia Pendidikan Journal Business Administration (JBA): Entrepreneurship and Creative Indutry Journal Of Management Analytical and Solution (JoMAS) Algoritma: Jurnal Matematika, Ilmu Pengetahuan Alam, Kebumian dan Angkasa
Parapat Gultom
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PENERAPAN METODE CUT OFF POINT DAN FUZZY SERTA TECHNIQUE FOR ORDER PREFERENCE OF SIMILARITY TO IDEAL SOLUTION PADA PENENTUAN SMARTPHONE TERBAIK: Studi Kasus Pada Mahasiswa Matematika Universitas Sumatera Utara Siagian, Riris Regita Cahyani; Napitupulu, Normalina; Gultom, Parapat; Syahputra, Muhammad Romi
MES: Journal of Mathematics Education and Science Vol 9, No 1 (2023): Edisi Oktober
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v9i1.8061

Abstract

Indonesia saat ini berada pada urutan keempat dengan jumlah pengguna smartphone terbanyak di dunia. Beberapa masalah yg sering muncul salah satunya dalam hal pemilihan smartphone terbaik. Penelitian dilakukan pada Mahasiswa Matematika Universitas Sumatera Utara dengan jumlah 100 responden. Metode yang digunakan adalah Cut Off Point untuk menyeleksi kriteria sehingga dihasilkan tujuh dari dua belas kriteria menggunakan hasil nilai Natural Cut Off Point sebesar 2,375. Setiap kriteria terpilih di representasikan menggunakan representasi Fuzzy Linear dan Fuzzy Linguistik. Proses seleksi melalui penerapan metode TOPSIS, membutuhkan nilai pembobotan kriteria berdasarkan pengisian kuesioner. Metode TOPSIS menggunakan nilai kecocokan antara kriteria dan alternatif untuk membangun matriks keputusan. Nilai kecocokan diperoleh dari hasil representasi Fuzzy sebelumnya. Berdasarkan hasil perhitungan TOPSIS, diperoleh alternatif terbaik hingga terendah adalah alternatif (Oppo Reno 8T) dengan nilai preferensi 0,874, (Vivo V27e) dengan nilai preferensi 0,823,  (Redmi Note 12 Pro 5G) dengan nilai preferensi 0,745,  (Realme 10 Pro 5G) dengan nilai preferensi 0,276, dan yang terakhir  (Samsung Galaxy A34 5G) dengan nilai preferensi 0,204. Penelitian ini juga menunjukkan bahwa kriteria Kapasitas Penyimpanan merupakan kriteria tertinggi dengan nilai rata-rata 2,93.
Penerapan Metode Analytical Hierarchy Process dalam Pemilihan Minyak Goreng Unggul Pada Kelurahan Pasar Sibuhuan Hasibuan, Syarinah Junianti; Gultom, Parapat
FARABI: Jurnal Matematika dan Pendidikan Matematika Vol 6 No 2 (2023): FARABI
Publisher : Program Studi Pendidikan Matematika FKIP UNIVA Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47662/farabi.v6i1.430

Abstract

Banyaknya merek minyak goreng di Kelurahan Pasar Sibuhuan, Kabupaten Padang Lawas, menyebabkan masyarakat kesulitan untuk menentukan minyak goreng unggul yang akan digunakan dalam memasak. Maka untuk mendapatkan minyak goreng unggul, dilakukan pengambian keputusan dalam pemilihan minyak goreng unggul menggunakan metode Analytical Hierarchy Process (AHP). Hasil yang diperoleh dari penelitian dengan menggunakan metode AHP adalah keriteria paling penting secara berurutan dalam pemilihan minyak goreng unggul yaitu kualitas minyak goreng dengan nilai bobot 0,258, harga minyak goreng dengan nilai bobot 0,256, kemudahan memperoleh minyak goreng dengan nilai bobot 0,254, dan promosi penjualan dengan nilai bobot 0,229. Minyak goreng unggul di Kelurahan Pasar Sibuhuan yang menjadi prioritas pertama yaitu minyak goreng Bimoli dengan nilai bobot 0,232, yang kedua minyak goreng Tropical dengan nilai bobot 0,204, yang ketiga minyak goreng Sania dengan nilai bobot 0,203, yang ke empat minyak goreng Sunco dengan nilai bobot 0,189, dan yang kelima minyak goreng Filma dengan nilai bobot 0,170.
OMNI-CHANNEL STRATEGY TO INCREASING INTEREST REPURCHASING WITH GROWING FOCUS IN CONSUMER SATISFACTION FOR SOMETHING PRODUCTS: AN EMPIRICAL STUDY AT SUN PLAZA SHOPPING CENTER MEDAN Shabrina Tifani; Endang Sulistya Rini; Beby Karina Fawzeea Sembiring; Paham Ginting; Parapat Gultom
International Conference on Health Science, Green Economics, Educational Review and Technology Vol. 5 No. 1: IHERT (2023) FIRST ISSUE: International Conference on Health Science, Green Economics,
Publisher : Universitas Efarina

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/ihert.v5i1.286

Abstract

This research aims to see the influence of omnichannel strategy on repurchase interest through consumer satisfaction with Somethinc products at Sun Plaza Medan. The type of research used is quantitative research. The population in this study were 154 consumers who had purchased Somethingnc products. The sample size was drawn using non-probability sampling using the purposive sampling method. The data used are primary data and secondary data obtained through a list of statements and documentation studies. The data analysis technique uses structural equation modeling (SEM) with the Smart PLS 3.3 analysis tool. The research results directly show that omnichannel strategy has a positive and significant effect on repurchase interest, omnichannel strategy has a positive and significant effect on consumer satisfaction, customer experience has a positive and significant effect on repurchase interest. Consumer satisfaction has a positive effect on repurchase interest. Then the results of tests carried out indirectly show that tourist satisfaction is not able to mediate the relationship between omnichannel strategy and repurchase interest, but consumer satisfaction is able to mediate the relationship between customer experience and repurchase interest.
Discrete Optimization Model in Constructing Optimal Decision Tree Azwar, Nurul Azri; Gultom, Parapat; Sawaluddin, Sawaluddin
Sinkron : jurnal dan penelitian teknik informatika Vol. 6 No. 3 (2022): Article Research Volume 6 Number 3, July 2022
Publisher : Politeknik Ganesha Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33395/sinkron.v7i3.11592

Abstract

Decision trees have been well studied and widely used in knowledge discovery and decision support systems. One of the applications of binary integer programming to form decision trees or decision making is the knapsack problem. The knapsack problem is an integer programming problem that involves only one constraint. The knapsack problem is generally illustrated with a bag and an item. The problem to be solved is to maximize the price of goods with a certain capacity that can be loaded by a bag with a certain capacity too. In solving the knapsack problem, it can generally be done directly. In this paper we are interested to show how the implicit enumeration method solves the knapsack problem to form an optimal decision tree
Decision Model for Unplanned ICU Transfer in a Hospital with Association Rule Learning Lestari, Nanda; Sawaluddin; Gultom, Parapat
Sinkron : jurnal dan penelitian teknik informatika Vol. 6 No. 3 (2022): Article Research Volume 6 Number 3, July 2022
Publisher : Politeknik Ganesha Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33395/sinkron.v7i3.11599

Abstract

The initial decision after treatment in the hospital emergency room is very important because apart from being an indicator of the quality of care for emergency room practitioners, it is also needed to achieve health goals, namely improving the quality of critical care and preventing death. The initial decision was also for an unplanned ICU transfer. Unplanned ICU transfer is the transfer of patients who originally came from the ER (Emergency Room), then to the Inpatient Room (having been treated for 24-48 hours), then to the ICU. Many studies have been carried out to predict the initial decision of unplanned ICU transfer using univariate analysis, logistic regression analysis, and association rules. The association rule algorithm generates rules between patient diagnosis features that form a decision model for unplanned ICU transfers, so it is essential to get an association rule algorithm that is more efficient in generating rules. In this study, we compare two association rule algorithms to get a more efficient algorithm; then, the rules are used to form a decision model for unplanned ICU transfers. The study results obtained that the Apriori algorithm requires a completion time of 3 ms and the FP-Growth algorithm requires a completion time of 31 ms. Hence, the FP-Growth algorithm is 28 ms more efficient than the Apriori algorithm, while the resulting rule generation is the same number of 67 rules. Only 11 rules meet the minsupp and minconf threshold and include the set of Class Association Rules (CAR), which are used to form a decision model for unplanned ICU transfers with binary integer programming
A Mathematical Approach to Dampening Sea Waves Using Submerged Permeable Breakwater Marpaung, J.L.; Tulus; Gultom, Parapat
Sinkron : jurnal dan penelitian teknik informatika Vol. 7 No. 3 (2023): Article Research Volume 7 Issue 3, July 2023
Publisher : Politeknik Ganesha Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33395/sinkron.v8i3.12489

Abstract

A wave is an energy that can propagate with a medium; the propagation of a wave moves with respect to time by carrying energy that moves with velocity per unit of time. Sea waves are one of the propagating wave problems that are broken down to produce wave propagation with a relatively inhomogeneous minimum amplitude and speed of sea waves, which have their own difficulties in solving them numerically. This study aims to analyze the stability of wave propagation on submerged breakwaters. This research will approximate the finite discretization of the breakwater domain and then combine it with the Finite Element Method to determine the moving elements of the velocity of fluid flow through a porous submerged breakwater. The research has explained the equation of the inflated wave and the simulated representation displayed on the wave breakdown process, the point that becomes the center of the waves breakdown will give a focused red color indicator meaning there is a change in momentum and potential energy that occurs and then changes the colour of the post-flattering of the sea wave so that the sinking wave breaker is a method to obtain the minimum speed and amplitude values that can be used for coastal engineering.
Optimization Model for Electric Vehicle Routing Problem with Two Charging Options Br Ginting, Emmita; Gultom, Parapat; Sutarman, Sutarman
Sinkron : jurnal dan penelitian teknik informatika Vol. 7 No. 3 (2023): Article Research Volume 7 Issue 3, July 2023
Publisher : Politeknik Ganesha Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33395/sinkron.v8i3.12577

Abstract

The use of electric vehicles recently is an alternative way to lower pollutants and the emissions of carbon dioxide resulting from the usage of motor vehicle fuel oil. The limited battery capacity of this electric vehicle is a problem for its users. Vehicle routing problem (VRP) is a problem of integer programming and combinatorial optimization that is frequently used in planning and decision-making processes. One application of this issue is to find the best path for delivering items from a corporation to customers. VRP problems are frequently utilized in order to reduce internal expenditure. Model optimization in this paper uses two rehcarging options, recharging and swapping battery. The purpose of this paper is to present a VRP optimization model for electric vehicle routing problems to find the best route option that minimizes the total of the fees for fixed vehicles, transit, charging, battery changing, and waiting.
Integration of AHP and Modified VIKOR Method to Select the Optimum Destination Route Simbolon, Miranda Melania Nathasia; Gultom, Parapat; Rosmaini, Elly
Sinkron : jurnal dan penelitian teknik informatika Vol. 8 No. 3 (2024): Research Artikel Volume 8 Issue 3, July 2024
Publisher : Politeknik Ganesha Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33395/sinkron.v8i3.13784

Abstract

One common approach to rating options is group decision making using many criteria. Here, we use the same criteria to evaluate each option. Sometimes, decision makers are faced with some situations where they have to choose from a set of alternatives that have several different criteria. Thus, the decision maker cannot use a common method. Therefore, in this research, a modification to a method is carried out. To address the issue of developing alternate routes to Medan City's historical tourism attractions, the AHP and VIKOR approaches have been suggested. When considering options with both specific and broad requirements, this study adapts the VIKOR technique to find a workable solution. In order to demonstrate the suggested model's use and evaluate the efficacy of this approach change, this study offers numerical examples based on case studies. The findings demonstrate that the revised approach is both practical and efficient.
Comparison of Genetic Algorithm and Particle Swarm Optimization in Determining the Solution of Nonlinear System of Equations Mindasari, Eva; Sawaluddin; Gultom, Parapat
Sinkron : jurnal dan penelitian teknik informatika Vol. 8 No. 3 (2024): Research Artikel Volume 8 Issue 3, July 2024
Publisher : Politeknik Ganesha Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33395/sinkron.v8i3.13785

Abstract

Nonlinear systems of equations often appear in various fields of science and engineering, but their analytical solutions are difficult to find, so numerical methods are needed to solve them. Optimization algorithms are very effective in finding solutions to nonlinear systems of equations especially when traditional analytical and numerical methods are difficult to apply. Two popular optimization methods used for this purpose are Genetic Algorithm (GA) and Particle Swarm Optimization (PSO). This study aims to compare the effectiveness of GA and PSO in finding solutions to nonlinear systems of equations. The criteria used for comparison include accuracy and speed of convergence. This research uses several examples of nonsmooth nonlinear systems of equations for experimentation and comparison. The results provide insight into when and how to effectively use these two algorithms to solve nonlinear systems of equations as well as their potential combinations
Application of Branch and Bound Method to Optimize the Profit of Kue Kacang Hijau MD Production of Special Souvenir Sabang City Kurniasari, Rini; Gultom, Parapat
Journal of Mathematics Technology and Education Vol. 1 No. 2 (2022): Journal of Mathematics Technology and Education
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (662.421 KB) | DOI: 10.32734/jomte.v1i2.7571

Abstract

Kue Kacang Hijau MD is a company that engages in the food business in Sabang City. This company produces more than one flavor of mung bean cakes including original flavor, coffee flavor, durian flavor, pandan flavor and chocolate flavor. For the limitation of available raw materials, this company difficulty to optimize its production profits. The aim of this study is to determine the amount of daily production of mung bean cake so the profit is maximum with the limited raw materials that available. This study uses the Branch and Bound Method, that is a method used to solve Integer Programming. From the analysis with this method, the optimal number of mug bean cake production is 1,060 boxes per day, that is 440 boxes of original flavor, 166 boxes of coffee flavor, 146 boxes of durian flavor, 146 boxes of pandan flavor, and 162 boxes of chocolate flavor with maximum profit is Rp. 4,323,200. By applying this method, daily profit would increase 6.35% or Rp. 258,200 compared to the previous profit.
Co-Authors Abdul Munif Afryantika Pratiwi Aghni Syahmarani Akbar, Andini Alya Nadhira Nur Amanda, Ade Siti Andre Masago Manik Angginun Juwita Sari Anggita Rizki Defiani Hasibuan Apriliza, Yafika Arlina Nurbaity Lubis Asima Manurung Asima, Asima Azwar, Nurul Azri Azzahra, Firza Bangun, Yohana Beby Karina Fawzeea Sembiring Binsar Nommensen Hasiolan Nababan Br Ginting, Emmita Br Manalu, Chairi Indani Chairi Indani Br Manalu Dalimunthe, Ritha F. Deby Nanda Sari Dian Natari Dwi Nurul Aisyah Eko Syafriadi Elikson Damanik Elisabet Siahaan Elly Rosmaini Elvin Juliani Gulo Endang Sulistya Rini Esther S. M. Nababan Esther SM Nababan Eunike Al Grea Ezra, Posman Febriani Safitri Felly Ardan Fitria Khairani Ginting, Jean Probosky Ginting, Yoga Gilbert Halasan Sirait Hardiansyah Hardiansyah Hartini Pratiwi Pane Hasibuan, Gamal Ali Akbar Hasibuan, Syarinah Junianti Hulu, Gracelin Nonifati Indah Permata Sembiring Indris Simanungkalit Irmayanti Nasution Iskandar Situmorang Ismail Napitupulu Jefri Leo Jonathan Liviera Marpaung Ketaren, Dahlia Rizky Khairunnisa Br Manurung Komarudin Komarudin Kristian, Abel Kurniasari, Rini Lestari, Nanda Loebis, Roma Ayni A. Mahyuddin K.M. Nasution Manalu, Mawar Winda Manulang, Dea Lonita Mardiningsih Mardiningsih Mardiningsih Maris Stella Sitorus Marpaung, J.L. Matriadi, Faisal Mey Ramayanti Tinambunan Mhd Diky Setiawan Mhd Reza Irjaldi Hasibuan Miftah Khairani Mindasari, Eva Miranda Moudy Fitria Respati Mulyadi Mardiyos, Roy Nababan, ESM Nababan, Esther S.M. Nababan, Esther Sorta Mauli Nabilah Faisal, Ananda Najang, Abdullah Natalia, Desy Denada Nazli Ramadhani Lubis Novi Yanti Nur Amalia, Syahamah Nurbaity Lubis, Arlina Octavianus, Handy Oka Simatupang Open Darnius paham ginting Paskah Riny Sirait Pratiwi, Annisa Rizki Prihatin Lumbanraja Pujiana, Perli Purba, Titin Miduk Putra, Ramadhan Diansyah Putri Khairiah Nasution Rahmadhina, Namira Mudrikah Rajagukguk, Angie Maretha Ramadhani Fitri Rina Br. Bukit Rita F. Dalimunthe Ritha F. Dalimunthe Ritha F.Dalimunthe Ritonga , Ewy Lady Christin Robby Oksa Cornely Ronny Sung RS, Yoppy Mairizon Ruslin Chaerul Cora Sabariah Sabariah Safira, Moza Sambas Ade Kesuma Saragih, Junawi Hartasi Sarah Madaniah Sartika Ningsih Sawaluddin Sawaluddin Sawaluddin Sawaluddin Sawaluddin, Sawaluddin Sembiring, Erwandi Martinus Sentosa, Ilham Shabrina Tifani Shafira, Meifanny Azri Siagian, Riris Regita Cahyani Siahaan, Elisabet Simanjuntak, Rahmad Simbolon, Miranda Melania Nathasia Sinaga, Hasanah Dwi Putri Sinurat, Rona Lamretta Sipayung, Aquinaldo Boyfame R. Sirait, Annisa Hidayati Siregar, Ahir Diana Putri Siregar, Dwi Faradiba Sitepu, Lia Eriska Br Siti Nurhaliza Siti Raha Agoes Salim Sitompul, Weny Grace Situmorang, Theresa Sisilia Sonya Putri Suherwin Suherwin Sukaria Sinulingga Suryati Sitepu Sutarman Sutarman Sutarman Sutarman Suyanto Suyanto Suyanto Suyanto Suyanto Syafriadi, Eko Syahputra, Muhammad Romi Syahrika Luthfi Syahriol, Syahriol T Khairunnisa Tambunan, Gilbert Pauly Hamonangan Tarigan, Miska Irani Tata Winda Lesmana Thianujaya, Wendy Thianujaya, Wendy Thianujaya Tulus Utari, Cutserly Weber, Gerhard Wilhelm Wibisono Wibisono Widyasari, Rina Wulandari, Annisa yeni absah Yohanna Yunitha Simangunsong