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All Journal Delta-Pi : Jurnal Matematika dan Pendidikan Matematika Jurnal Sains Matematika dan Statistika PYTHAGORAS: Jurnal Program Studi Pendidikan Matematika ZERO : Jurnal Sains, Matematika dan Terapan Sinkron : Jurnal dan Penelitian Teknik Informatika JURNAL MEDIA INFORMATIKA BUDIDARMA Zeta - Math Journal Zero : Jurnal Sains, Matematika, dan Terapan ALGORITMA : JURNAL ILMU KOMPUTER DAN INFORMATIKA JISTech (Journal of Islamic Science and Technology) Jurasik (Jurnal Riset Sistem Informasi dan Teknik Informatika) IJISTECH (International Journal Of Information System & Technology) KOMIK (Konferensi Nasional Teknologi Informasi dan Komputer) MAJAMATH: Jurnal Matematika dan Pendidikan Matematika AMALIAH: JURNAL PENGABDIAN KEPADA MASYARAKAT M A T H L I N E : Jurnal Matematika dan Pendidikan Matematika Math Educa Journal Jurnal Mantik Jutisi: Jurnal Ilmiah Teknik Informatika dan Sistem Informasi Jurnal Absis : Jurnal Pendidikan Matematika dan Matematika Jurnal Teknik Informatika C.I.T. Medicom G-Tech : Jurnal Teknologi Terapan INFOKUM TIN: TERAPAN INFORMATIKA NUSANTARA Theta : Jurnal Pendidikan Matematika Indonesia Berdaya Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika International Journal Of Science, Technology & Management (IJSTM) Asimetris: Pendidikan Matematika dan Sains IJISTECH FARABI: Jurnal Matematika dan Pendidikan Matematika International Journal of Basic and Applied Science Jurnal Informatika Teknologi dan Sains (Jinteks) Jurnal Pengabdian Mandiri International Conference on Sciences Development and Technology International Journal of Science and Environment Innovative: Journal Of Social Science Research JME Quadratic: Journal of Innovation and Technology in Mathematics and Mathematics Education
Hendra Cipta
Department Of Mathematics, Universitas Islam Negeri Sumatera Utara, Medan
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Forecasting of jansen's rice inventory control using monte carlo and markov chain techniques Hasni Indah Sari; Sajaratud Dur; Hendra Cipta
International Journal of Basic and Applied Science Vol. 11 No. 2 (2022): Sep: Basic and Applied Science
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/ijobas.v11i2.99

Abstract

Rice is an essential commodity in Indonesia because of its role as a staple food, which most Indonesians consume daily as a carbohydrate intake. In its development to meet these needs, many things affect the stability of the availability and price of this rice. They are starting from climatic conditions, logistics systems, and the state of the domestic market and the international rice market. On the other hand, the increase in national rice consumption from year to year will continue to grow along with the rise in population. This research aims to apply the Monte Carlo and Markov Chain method to control Jansen rice supplies at the Jansen Rice Mill, Paluh Wave Street, Percut Sei Tuan District, Deli Serdang Regency, North Sumatra Province. The data used is data on rice demand from 2016 to 2021. Monte Carlo forecasts for the next few years, and Markov Chain provides what percentage of opportunities for rice demand to increase or decrease.
Gold Price Prediction Using the Fuzzy Time Series Saxena-Easo Method Anjas Fernando; Riri Syafitri Lubis; Hendra Cipta
International Conference on Sciences Development and Technology The 1st ICoSDTech 2021
Publisher : International Conference on Sciences Development and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (444.013 KB)

Abstract

Gold is an investment that has the smallest risk compared to other investment methods, but every time the price of gold always fluctuates. This fluctuation will make it difficult for investors, the government, or those who need gold price data to see how the prospects for gold investment are going forward. To overcome this, a prediction or forecast is made. One of the forecasting methods developed with fuzzy theory is the Saxena-Easo fuzzy time series method. In this study, this method will be used to predict gold prices in the period 17 August 2021 to 31 December 2021. The purpose of this study is to determine the value of gold prices for the period 17 August 2021 to 31 December 2021 and to determine the accuracy of the fuzzy time series method. Saxena Easo. While the parameter used to measure forecasting accuracy is MAPE, if this parameter is in the range of 10% to 20% then the forecasting result is good, and if the parameter is below 10% then the forecast result is very good. The results of forecasting gold prices in the period 17 August – 31 December 2021 have a value that tends to increase and the MAPE obtained is 0.024277%. Therefore, it can be said that the prediction results for certain parameters are very good.
Estimasi Penerima Alat Bantu Penyandang Disabilitas Di Dinas Sosial Kota Medan Menggunakan Metode Regresi Linier Berganda Rahmat Darmawan; Shelly Kilan Cahaya Pulungan; Reni Puspita; Jeni Yulinda; Sarif Muda Pasaribu; Hendra Cipta
Indonesia Berdaya Vol 4, No 2 (2023)
Publisher : Utan Kayu Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47679/ib.2023450

Abstract

Dinas Sosial Kota Medan merupakan salah satu tempat penyaluran Bantuan Sosial bagi masyarakat kota Medan. Salah satu Bantuan Sosial yang disalurkan kepada masyarakat kota Medan ialah Alat Bantu Penyandang Disabilitas. Alat Bantu Penyandang Disabilitas adalah benda yang berfungsi membantu kemandirian Penyandang Disabilitas dalam melakukan kegiatan sehari-hari yang bertujuan untuk meningkatkan kemampuan penyandang disabilitas dalam pemenuhan hak dasar mereka di masyarakat, dan penyaluran tersebut dijalankan setiap tahunnya. Sehingga Dinas Sosial harus dapat memprediksi tingkat estimasi penerima Bantuan Sosial Alat Bantu Disabilitas dengan menggunakan metode regresi linier berganda dapat mengestimasi penerima Bantuan Sosial Alat Bantu Disabilitas di tahun mendatang.
IMPLEMENTASI ALGORITMA WELCH-POWELL TERHADAP PENGATURAN LALU LINTAS PERSIMPANGAN JALAN DALAM MENGATASI KEMACETAN Rina Filia Sari; Hendra Cipta; Esto Fanny Munthe
Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika Vol. 3 No. 3 (2022): Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistik
Publisher : LPPM Universitas Bina Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46306/lb.v3i3.173

Abstract

The traffic is one of the problems that are often in big cities in Indonesia, where this also happened on Gatot Subroto Sei Sikambing street, Medan city. The traffic light is a tool that is made with the aim of being an assistant in regulating traffic so that it runs more orderly, but it has not been able to run optimally due to the determination of which traffic flow is green or red and also the duration of the traffic light. The solusition that can be given to solve this problem is to use a welch-powell algorithm. The welch-powell algorithm is doing coloring activity  by producing a chromatic number. This is study, the chromatic number obtained was 4 and the average duration of the red light has decreased by  or 116.51 seconds so that its negative and the average duration of the green light has increased by or 119.63 seconds so its positive
PENENTUAN FAKTOR-FAKTOR PRIORITAS YANG MEMPENGARUHI MASYARAKAT DALAM PENGGUNAAN BUS TRANS METRO DELI MEDAN DENGAN ANALISIS METODE ANALYTIC HIERARCHY PROCESS Maulidya Khairani; Fibri Rakhmawati; Hendra Cipta
Jurnal Informatika Teknologi dan Sains Vol 4 No 4 (2022): EDISI 14
Publisher : Program Studi Informatika Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (294.127 KB) | DOI: 10.51401/jinteks.v4i4.2137

Abstract

The emergence of the Bus Trans Metro Deli Medan as a means of public transportation based on BRT (Bus Rapid Transit) has caused City Transportation in the city of Medan to feel competitive and the income earned has decreased due to passengers switching to its use. The purpose of this study is to apply the Analytic Hierarchy Processmethod to the factors that influence the people of Medan in using Bus Trans Metro Deli Medan and to find out the most priority factors. From the research results obtained by applying the Analytic Hierarchy Processthat 80% people of Medan prefer to use Bus Trans Metro Deli Medan with a fare factor of 24%, travel time is 9%, Convenience is 19%, Technology Development is 12%, Travel Accsess is 10%, Service is 15% and Life Style is 11%. So, the cost rate factors is more priority than other factors.
An Optimization Model for Hospital Emergency Room Based on Patient Growth and Capacity Management Rina Widyasari; Hendra Cipta; Mutiah Nasution
Sinkron : jurnal dan penelitian teknik informatika Vol. 8 No. 1 (2023): Articles Research Volume 8 Issue 1, 2023
Publisher : Politeknik Ganesha Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33395/sinkron.v8i1.11890

Abstract

According to government regulations of the Republic of Indonesia through the Ministry of Health, the hospital is a health service institution that organizes full individual health services that provide inpatient, outpatient and emergency services. The hospital can function as a place of final service by handling patients according to their abilities. Therefore, the facilities, infrastructure, and resources of the emergency room must be adequate so that they are able to cope with patients. In the case of COVID-19, the number of needs and capacities coupled with the need for demand forecasting and capacity management, especially in the emergency room at the Malahayati Hospital Medan is very necessary. So in this study, the mathematical model was built that could provide a solution to the problem of the need for demand forecasting and capacity management in the emergency room. The mathematical model for the exact outcome is determined by the relationship that exists between states and events. In this study, it is assumed that all events have a fixed probability, without considering drug administration and waiting time. For this reason, the method used the Support Vector Machine (SVM) which is expected to provide an estimate of how many people and capacity management needs are needed in the emergency room when the COVID-19 pandemic occurs. The mathematical model that was built was then simulated in the final part of this study using sample data taken from the Malahayati Hospital Medan.
Network Planning Analysis Using CPM and PERT Methods on Optimization of Time and Cost Surayya Aulia; Hendra Cipta
Sinkron : jurnal dan penelitian teknik informatika Vol. 8 No. 1 (2023): Articles Research Volume 8 Issue 1, 2023
Publisher : Politeknik Ganesha Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33395/sinkron.v8i1.11961

Abstract

The shipbuilding industry is the most important industry to support sea transportation in the context of maritime development. As a company engaged in shipping, the function of the shipyard is as a place for shipbuilding, ship repair, and ship maintenance. One of the activities carried out by PT. DNC as a shipyard company is to repair TK Aek Sigala-gala. Ship repair is a process of repairing or replacing ship materials that cannot be used to avoid risks that occur in the sea when the ship sails. In the implementation of project activities, the company must understand the right network so that there are no problems scheduling, planning and controlling project activities. This study aims to solve the problems faced by the company, is the delay in completion time. The data used is secondary data related to the sequence and relationship of activities, execution time, and cost budget plan (RAB). This study uses CPM and PERT methods to determine the optimal turn around time using critical path and probability concepts. The results of the CPM and PERT methods are activities on the critical path with an optimal duration of 98 days. The crashing method is to reduce the duration to 72 days with savings of Rp. 16,351,708. if the project implementer does not crash, the penalty that must be paid is Rp. 3,072,963,905.
Fuzzy Mamdani Forecasting of Blood Bag Supply at Indonesian Red Cross Blood at Deli Serdang Regency Unit Ika Silvia Ramadani; Rina Filia Sari; Hendra Cipta
INFOKUM Vol. 10 No. 5 (2022): December, Computer and Communication
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

An increase in population will cause an increase in the amount of processed blood reserves. Therefore, it is necessary to forecast the amount of production within a certain period of time to see the number of blood bags that may be needed in order to meet demand correctly and in the appropriate amount. The method used is Mamdani fuzzy with data sourced from the Indonesian Red Cross Blood Unit Deli Serdang Regency from January 2019 to January 2020. This study shows that the Mamdani District fuzzy method can be implemented for forecasting the production of blood bags in January and February 2020.
Forecasting of The Crime Rate Using Automatic Clustering and Fuzzy Logic Relationship Method In North Sumatra Elsyah Suhadiyah; Sajaratud Dur; Hendra Cipta
International Journal of Science and Environment (IJSE) Vol. 2 No. 1 (2022): February 2022
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (455.313 KB) | DOI: 10.51601/ijse.v2i1.14

Abstract

Currently the crime rate is very alarming and reported in various mass and electronic media. The high crime rate in the Province of Nort Sumatra is very unsettling for the community. The purpose of this research is to get the result of forecasting the crime ratel in the 2021 - 2024 using Automatic Clustering And Fuzzy Logic Relationship (ACFLR) method. The advantage of this method is that the method has a high level of accuracy because the Mean Absolute Percentage Error (MAPE) value is relative small and the results of forecasting analysis obtained in 2021 there are 31522 cases, in 2022 are 31533 cases, in 2023 are 31574 cases and the last one in 2024 was 31602 cases. In addition, the prediction error rate MAPE obtained is 0,35 % Keywords: Crime rate, Automatic Clustering And Fuzzy Logic Relationship.
Optimasi Biaya Distribusi Kusen Pintu Menggunakan Model Transportasi Northwest Corner Method, Russel Approximation Method, dan Stepping Stone Poppy Andriani; Hendra Cipta
JURNAL MEDIA INFORMATIKA BUDIDARMA Vol 7, No 1 (2023): Januari 2023
Publisher : Universitas Budi Darma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30865/mib.v7i1.5224

Abstract

The transportation method is a method used to calculate distribution costs based on the origin that provides the same products to the destination location optimally using minimum costs. Previously, Cv Prima had to pay Rp 72,356,720 for transportation costs. So that the CV Prima company experienced swelling in distribution costs. Expenses for excess distribution costs result in the quality of door frame delivery not being optimal. In this study, the Northwest Corner Method and the Russell Approximation Method were used as the initial solution and continued with the Stepping Stone method as the optimal solution. So that this research produces the lowest costs after applying the Northwest Corner method revealing transportation costs of IDR 69,256,630 and using the Russel Approximation Method, transportation costs are IDR 67,304,680. For Stepping Stone optimization, the transportation cost is IDR 66,641,020. Therefore, the Northwest Corner and Russell Approximation Methods and continued with the Stepping Stone method for this problem are more efficient, because the company found a reduction in transportation costs of 7.899% or IDR 5,715,700.
Co-Authors Abdul Halim Hasugian Abimayu, Satria Ali Ikhwan Anjas Fernando Aulia Lia Yusharsah Ayu Annisa Suratna Ayu Hariati Bayu Teza Syahputra Chairani Chairani Chairani, Denita Chairina Chairina Desi Ratna Sari Dian Maya Sari Elsyah Suhadiyah Endah Nurfebriyanti Esto Fanny Munthe Fani Darmawan Putra Fauzah Umami Hamidah Nasution Hanifa Mardiatun Nasution Hari Kurniawan Hasni Indah Sari Hasyim Hawari Lubis Hasyim Lubis Henny May Sarah Ika Silvia Ramadani Ilham Syaputra Indra Jaya Ismail Husein, Ismail Jeni Yulinda Khairun Nisa Lia Lestari Lubis, Riri Syafitri Maimunah Rahmadani Maulidya Khairani May Fitriana Hasibuan Mei Yunina Arianti Michael Handrianto Muhammad Fathoni Mutiah Nasution Nila Sari Nur Indah Sari Nurhasanah Nurhasanah Nurma Indah Sari Nurma Sari Nurul Aprilla Rizki Nurul Huda Prasetya Paisal Sirait Panca Taufik Kurahman Poppy Andriani Prasetya, Nurul Huda Putri Nopriani Sianipar Radita Fadillah Rahmat Darmawan Rakhmawati, Fibri Regina Kuswoyo Reni Puspita Rezki Azmi Ricka Afriani Rima Aprilia Rima Aprilia Rina Filia Sari Rina Filia Sari Rina Filia Sari Rina Filia Sari Rina Filia Sari Rina Widyasari Rina Widyasari Rina Widyasari Rina Widyasari Rina Widyasari Rina Widyasari Riri S Lubis Sajaratud Dur Sajaratud Dur Sajaratud Dur Sajaratud Dur Sajaratud Dur, Sajaratud Salsabillah Hazizah Sarif Muda Pasaribu Shelly Kilan Cahaya Pulungan Silvia Harleni Siti Zunaida Nasution Sri Ulfa Rahayu Surayya Aulia Susi Susanti Komariah Uci Rahmadani Uni Agustin Wenny Marta Dolok Saribu Widyasari, Rina Winda Risfani Nst Zepri Johanda