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Ritonga, Irmayanti
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Optimasi Keuntungan UMKM ATK (AlatTulis Kantor) Fotocopy Menggunkan Linear Programing (Studi Kasus Fotocopy Kumle) Urrizka, Annisa; Humairoh, Arsy; Manja, Dwi Putri; Harahap, Saima Putri; Ranandia, Windi; Ritonga, Irmayanti
Journal of Computer Science and Information System(JCoInS) Vol 6, No 1: JCoIns | 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jcoins.v6i1.6888

Abstract

Photocopy stationery stores face challenges in determining optimal prices to maximize profits while considering stock constraints, costs, and demand. This study uses a linear programming approach to solve this problem. The data used include reseller prices, selling prices, stock capacity, and market demand for seven types of goods. Validated using QM software for Windows. The results of the study indicate that this method successfully determines the optimal combination of selling price and production quantity, which provides a maximum profit of Rp910,000 per day. This approach provides a strategic solution for photocopy stationery managers in data-based decision making.
Optimasi Keuntungan Toko Buah Menggunakan Linear Programming Melalui Metode Simpleks (Studi Kasus : Toko Buah Sirandorung) Syahfitri, Diana; Priyanti, Dinda Octa; Pefrianti, Lenni; Syahputri, Tria; Ritonga, Irmayanti
Journal of Computer Science and Information System(JCoInS) Vol 6, No 1: JCoIns | 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jcoins.v6i1.6881

Abstract

Fruit stores face the challenge of determining optimal prices to maximize profits while considering stock constraints, costs, and demand. This research uses a linear programming approach with the simplex method to solve this problem. The data used includes reseller prices, selling prices, stock capacity and market demand for seven types of fruit. The manual process with the simplex method was validated using QM for Windows software. The research results show that this method is successful in determining the optimal combination of selling price and production quantity, which provides a maximum profit of IDR 666,000 per day. This approach provides a strategic solution for fruit shop managers in making data-based decisions.
Analisis Antrian Pendekatan Sistematis Untuk Mengurangi Waktu Tunggu di Klinik Kecantikan Rantauprapat Hasibuan, Zamrotus Sholeha; Panjaitan, Nurmala; Ritonga, Laila Hasanah; Rambe, Anisah Rahma; Ritonga, Irmayanti
Journal of Computer Science and Information System(JCoInS) Vol 6, No 2: JCoIns | 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jcoins.v6i1.6965

Abstract

Queues that occur at beauty clinics are often the main factor that causes inconvenience to customers, one of which is long waiting times. This study aims to analyze the queues at the Rantauprapat Beauty Clinic and propose a systematic approach to reduce waiting times. The method used in this study is queue analysis with a queuing theory approach, where customer arrival time and service time data are collected through direct observation at the clinic. The results of the analysis show an imbalance between the rate of customer arrivals and the available service capacity, which results in queue congestion. Therefore, it is recommended to implement a schedule-based queue management system or appointment system, add service personnel during peak hours, and improve the service system to speed up the process. By implementing these solutions, it is expected to reduce customer waiting time, increase operational efficiency, and provide a better experience for customers at the Rantauprapat Beauty Clinic.
Meningkatkan Efisiensi Layanan Fotokopi Melalui Metode Antrian Yang Tepat Audya, Anggi; Putri, Pujawati Kurnia; Hasibuan, Vivi Indriani; Srikandy, Yuyun Lili; Ritonga, Irmayanti
Journal of Computer Science and Information System(JCoInS) Vol 6, No 2: JCoIns | 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jcoins.v6i1.6896

Abstract

Efficient photocopying services are essential to meet customer needs in this fast-paced era. This article discusses the importance of implementing the right queuing method to improve the efficiency of photocopying services. With the increasing demand for photocopying services, long queues are often a problem that disrupts the customer experience. Through an analysis of various queuing methods, such as digital queuing systems, virtual queues, and self-service kiosks, this article identifies the advantages and disadvantages of each method. It also presents case studies of several copy shops that have successfully implemented modern queuing methods, showing significant improvements in waiting time and customer satisfaction. The results show that implementing the right queuing method not only reduces waiting time but also increases employee productivity and customer loyalty. This article is expected to provide insights for copy shop owners in optimizing their services through effective queue management.
Analisis Model Antrian Single Channel Single Phase Pada Pelayanan Publik SPBU Simpang Mangga Hasibuan, Mhd. Sahdani Rafli; Reza, Aldito Fiter Vanesa; Irawan, M Fahri; Yudha, Hasan Wira; Ritonga, Irmayanti
Journal of Computer Science and Information System(JCoInS) Vol 6, No 1: JCoIns | 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jcoins.v6i1.6883

Abstract

This research analyzes the single channel singlephase queuing model for public services at the Simpang Mangga Public Fuel Filling Station (SPBU). Public services play an important role in meeting the diverse needs of society, with efficiency and effectiveness becoming a major concern due to increasing public demands for quality services. Queuing models serve as a valuable approach to analyzing and optimizing service systems by understanding customer arrival patterns, service capacity, and service duration. This research uses quantitative methods with a descriptive-analytical approach, collecting data through direct observation for one hour to assess customer arrival times, service times and waiting times. The research results show that the average customer arrival interval is 5 minutes, with gas stations capable of serving 30 customers per hour. The level of service intensity (p) was recorded at 0.17, indicating that service facilities were only filled with customer service as much as 17%. The average number of customers in the system (L) is 0.2, and the average number of customers waiting (Lq) is 0.03. The average time spent by customers in the system (W) is 0.04 minutes, while the average waiting time in queue (Wq) is 0.01 minutes. These findings highlight the effectiveness of single-phase single-channel models in improving service efficiency and customer satisfaction. Recommendations include increasing service capacity and optimizing the queuing system to reduce waiting times and improve overall service quality.
Analisis Antrian Penjualan Pada UMKM Kebab KZL Aek Tapa Chahira, Mayang; Silvana, Mega; Huda, Nurul; Yusfina, Yusfina; Ritonga, Irmayanti
Journal of Computer Science and Information System(JCoInS) Vol 6, No 1: JCoIns | 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jcoins.v6i1.6825

Abstract

This article presents an analysis of the queuing system of UMKM Kebab KZL Aek Tapa with the aim of determining the optimal waiting time. This research uses observation and literature review methods to collect waiting time and service data. In the context of Kebab KZL, the queuing system used is a single channel model (M/M/1). Perform queue analysis using QM for Windows software to understand customer arrival and service trends. The analysis results show that the average waiting time of customers in the queue is 13 minutes, and the service utilization rate is 62%. These insights are expected to help UMKM Kebab KZL in improving the efficiency of the queuing system and service to customers.
Peneparan Medote Transportasi Untuk Analisa Pengiriman Barang Pada JNT Aek Nabara Suratika, Nadya; Manurung, Elisabeth Natasya; Harahap, Sri Handayani; Nasution, Iwan; Ritonga, Irmayanti
Journal of Computer Science and Information System(JCoInS) Vol 6, No 2: JCoIns | 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jcoins.v6i1.6972

Abstract

This research analyzes goods delivery transportation methods at JNT Aek Nabara, North Sumatra, with a focus on cost efficiency and service quality. The three types of services analyzed are Sure Tomorrow Arrive (YES), Regular (REG), and OKE. The analysis methods used, including North West Corner (NWC), Least Cost, and Vogel's Approximation Method (VAM), show potential cost savings of up to 15%. Additionally, sensitivity analysis reveals that large changes in distribution parameters can affect overall delivery efficiency. This research concludes that choosing the right transportation method is very important to increase efficiency and recommends regular evaluation of distribution strategies based on real-time data to meet customer expectations.
Analisis dan Optimasi Pendapatan Toko Sembako Dengan Pendekatan Program Linier (Studi Kasus Toko Sembako Ibu Sri) Adelia, Nisa; Siregar, Nurhindun Sya’ada; Bahri, Sri Mawarni; Ritonga, Irmayanti
Journal of Computer Science and Information System(JCoInS) Vol 6, No 2: JCoIns | 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jcoins.v6i1.6969

Abstract

Linear programming is a mathematical approach used to increase the revenue of a grocery store through the analysis of the most optimal combination of products. This study aims to identify the main constraints faced by grocery stores, such as limited capital, storage capacity, and consumer demand. Furthermore, an optimization model based on linear programming was developed to overcome these constraints. This research applies Simplex and Branch and Bound method to find the best solution. The results showed that the application of linear programming model is able to help stores determine the number of products that need to be sold efficiently to maximize revenue. This optimization process also allows for more optimal utilization of existing resources, thus supporting more effective and data-driven decision making. This study provides an important contribution in the management of grocery stores, especially in improving operational efficiency and revenue, and can be a reference for other small business actors.
Analisis Sistem Antrian Pelayanan dan Kedatangan Pelanggan Dengan Menggunakan Qm For Windows Pada Indomaret Aek Batu Fitria, Annisa Pribadi; Risnawati, Risnawati; Rambe, Dedi Purnama; Situmorang, Bima Muhammad; Ritonga, Irmayanti
Journal of Computer Science and Information System(JCoInS) Vol 6, No 1: JCoIns | 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jcoins.v6i1.6938

Abstract

Queue is an activity of waiting in a line carried out by customers or goods to obtain service facilities. Queue is a Waiting Line of Customers measured by certain units that require one or more services. Queue Analysis is a form of probability analysis. Queues are often encountered in everyday life. The queuing process is a process related to the arrival of customers at a service facility, waiting in a queue if they have not been served, being served and finally leaving the facility after being served. Someone has to wait which takes time. The purpose of this observation is to find out the queuing system at Indomaret Aek Batu and to find out the optimal cashier service. The first step taken is to observe customer arrivals. The analysis process uses "Microsoft Excel" and "POM-QM For Windows" software with the Waiting Lines module. From the results of the calculation, the average number of customers waiting for the longest system at 15.00-19.00 is 114 people. While the average number of customers waiting in the shortest system occurs at 07.00-11.00, which is 32 people, it can be concluded that the performance of the queue system at Indomaret Aek Batu is not optimal.
Implementasi Metode Simpleks Dalam Penentuan Keuntungan Pada Usaha Rumah Jahit Yulia Simatupang, Leni Darsima; Febriani, Sindi; Nisa, Tarbiyatun; Wati, Yulia Prestia; Ritonga, Irmayanti
Journal of Computer Science and Information System(JCoInS) Vol 6, No 1: JCoIns | 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jcoins.v6i1.6851

Abstract

This research aims to apply the simplex method using QM for Windows software to determine the optimal benefits of the Yulia Sewing House. In the textile industry, efficient resource management is very important to increase profitability. Yulia Sewing House is faced with the challenge of utilising limited resources such as raw materials and labour to maximise profits from various products offered. The simplex method is used to solve linear program problems with the function of profit goals that want to be maximised and constraints such as production capacity or availability of raw materials. The data used in this research includes information on production costs, selling prices, and production capacity of each type of product. QM for Windows analyses to determine the optimal production mix. This research will make a significant contribution to strategic decision making in the management of Yulia Sewing House and can be a reference for other small and medium businesses to optimise the production process and increase the profitability of Yulia Sewing House. From the results thatObtained, the simplex method can be used to maximise. The profit with an increase in profit of Rp 2,800,000.
Co-Authors Ananda, Muhammad Rizki Ananta, Yuli Dhea Anggraini, Dela Anistasah, Cindy Anistasya, Tiara Ariani, Lisa Audya, Anggi Bahri, Sri Mawarni Chahira, Mayang Chaniago, M. Fikri Al Hafiz Choirunnisa, Mutiara Christoval, Peter Dasopang, Khoirunisa Domo, Alfun Khoir Erviyanti, Anggi Febriani, Sindi Fitria, Annisa Pribadi Harahap, Ayu Sari Harahap, Fadilla Arba Harahap, Muhammad Irham Harahap, Rini Rizkyana Harahap, Rizky Pratama Harahap, Saima Putri Harahap, Sri Handayani Hasibuan, Ardiansyah Hasibuan, Cahaya Nabila Hasibuan, Mhd. Sahdani Rafli Hasibuan, Mustapa Ali Hasibuan, Vivi Indriani Hasibuan, Zamrotus Sholeha Hermika, Eva Humairoh, Arsy Irawan, M Fahri Jantina, Wiola Eka Kurnia, Ega Kurniawan, Juliardi Laila Sari Lubis, Nadira Jannah Adeni Manja, Dwi Putri Manurung, Elisabeth Natasya Marianti, Nike Mariyuandra, Alfanny Maulana, Rezky Nasution, Adinda Ayu Nasution, Aldi Nasution, Iwan Nasution, Marnis Nisa Adelia, Nisa Nisa, Tarbiyatun Nst, Mayang Alvi Perdana Nurmala Panjaitan Nurul Huda Panjaitan, Hadid Akhyarsyah Pasaribu, Hasyim Pasaribu, Teguh Fadillah Alwi Pefrianti, Lenni Pitaloka, Lola Jenny Pramudita, Dewi Pratiwi, Cindi Priyanti, Dinda Octa Pulungan, Riezka Amalia Puspita, Rinda Putri, Pujawati Kurnia Rahma, Aulia Ramadhani Ramadhani Rambe, Anisah Rahma Rambe, Boby Pratama Rambe, Dedi Purnama Rambe, Ulfa Ufrona Ranandia, Windi Reza, Aldito Fiter Vanesa Rijal, Ahmad Risnawati Risnawati Ritonga, Akbar Pramuja Ritonga, Laila Hasanah Ritonga, Rista Andini Rubaini, Mingle Oktaria Sartika, Tiara Silaen, Siti Humairoh Silvana, Mega Simanjuntak, Hoirun Nisyah Simatupang, Leni Darsima Sinta, Evi Yulia Sirait, Roby Gusmawan Siregar, Jogi Anggita Siregar, Nurhindun Sya’ada Siregar, Salsa Dea Oktavianda Siti, Siti Situmorang, Bima Muhammad Sofyan, Hadron Srikandy, Yuyun Lili Sukani, Sri Rejeki Suratika, Nadya Syahfitri, Diana Syahfitri, Novi Syahputra, Egy Fahmi Syahputri, Tria Syaiful Zuhri Harahap Tanjung, Eka Agustin Ubaidillah, Muhammad Sa’i Urrizka, Annisa Wardana, Priya Wati, Yulia Prestia Wijaya, Alief Achmad Yogi Fernando, Yogi Yogi Saputra, Yogi Yudha, Hasan Wira Yuni, Elfi Zahra Yusfina, Yusfina