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All Journal Jurnal Simetris Jurnal Edik Informatika : Penelitian Bidang Komputer Sains dan Pendidikan Informatika Jurnal Mirai Management JOIV : International Journal on Informatics Visualization JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) JURNAL ILMIAH INFORMATIKA Journal Information System Development Batoboh : Jurnal Pengabdian Pada Masyarakat IJISTECH (International Journal Of Information System & Technology) Jurnal Tekinkom (Teknik Informasi dan Komputer) IJISTECH Jurnal Puan Indonesia Jurnal Sains Informatika Terapan (JSIT) JUPADAI : Jurnal Pengabdian Kepada Masyarakat JURSIMA Jurnal Sistem Informasi dan Manajemen Computer & Science Industrial Engineering Journal Prosiding Seminar Nasional Ilmu Sosial dan Teknologi (SNISTEK)
Sitohang, Sunarsan
Universitas Putera Batam
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Prediksi Harga Saham Menggunakan Generalize Fuzzy Inference System (GENFIS3) Sunarsan Sitohang; Very Karnadi
Prosiding Vol 3 (2020): SNISTEK
Publisher : LPPM Universitas Putera Batam

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Abstract

The stock market has been very hard hit during the Covid 19 pandemic, many stock prices have plummeted which is influenced by negative sentiment in the form of uncertainty about when this Covid will end. On the other hand, this situation is a very big opportunity to invest because it buys cheap stock prices. Prediction is an instrument that can assist in making decisions about buying and selling shares. We can process daily time series data of stock prices as a reference in estimating the ups and downs of stock prices. In this study, the data used are daily data on the highest stock pricesduring the Covid-19 period. This data pattern formation is assumed with six days as input and the seventh day as the expected target. The data pattern that is formed is divided into two parts, namely the training data pattern and the test data pattern. The prediction method used is the Generalize Fuzzy Inference System (Genfis3). Genfis3 is a combination of Fuzzy C-Means and Adaptive Neural Fuzzy Inference (ANFIS). The training data will be clustered into 3 (low, medium and high) using FCM then the membership function of each cluster will be entered into ANFIS to form an inference engine. Based on the results of the research, Genfis 3 could recognize the pattern of training data well with a MAPE of 3.7%. Based on the test with the test data pattern, GENFIS 3 is able to predict the test data pattern very well with a MAPE of 2.24%.
Perancangan Aplikasi Harga Cerdas Berbasis Android Very Karnadi; Sunarsan Sitohang
Prosiding Vol 3 (2020): SNISTEK
Publisher : LPPM Universitas Putera Batam

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Abstract

The increasing number of customers at minimarkets creates problems in the convenience and effectiveness of the shopping process at the minimarket. The problem of information regarding the data of goods is often complained of by customers, such as there is often a difference in the price listed on the shelf with the price at the checkout and the lack of information makes customers busy looking for employees to ask about item details. The purpose of this study is to produce an android-based cashier application to help minimarket visitors to see information about the price of goods, the amount of groceries and the total shopping to be paid at the cashier. In addition, this application also includes information on expired items so that customers can find comfort in the forest. This application has a barcode scanning feature where each item is scanned and can view item details such as id, name, dimensions, quantity, color, price, and images of goods and expiration date. This mini market application is based on android which is integrated on a server via the internet and is supported by the MYSQL Database. By using a system like this, customer comfort and satisfaction when it is expected will increase and become more value from the minimarket side itself so that it helps cashiers in the process of managing sales data more effectively, efficiently and accurately so that customers get comfort in shopping activities and do not feel suspicious about the cheating of convenience stores.
PERANCANGAN SISTEM ABSEN BERBASIS FACE RECOGNITION Manik, Yosep Pangihutan; Sitohang, Sunarsan
Computer Science and Industrial Engineering Vol 12 No 4 (2025): Comasie Vol 12 No 4
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v12i4.9863

Abstract

The rapid advancement of face recognition technology offers potential solutions for inefficient manual attendance systems, such as the one at SMK Tunas Muda Berkarya Vocational School, which relies on time-consuming, error-prone methods. This study aimed to design and implement an automated attendance system using face recognition to enhance accuracy and efficiency. Employing Python, OpenCV, and the Eigenface method with Principal Component Analysis (PCA), the system integrated Viola-Jones algorithm for face detection and Haar-like features for training. UML diagrams guided the design, while Black Box Testing validated functionality. Results demonstrated successful implementation with 15 students, achieving efficient real-time attendance recording and reduced processing time. However, accuracy depended on optimal lighting and frontal face positioning. The conclusion affirms the Eigenface method’s effectiveness in automating attendance, significantly improving over manual systems. Future recommendations include optimizing environmental adaptability, integrating mobile platforms, and enhancing user interaction features for broader applicability. This research underscores the viability of biometric systems in educational institutional management.
PROTOTYPE SISTEM MONITORING KESEHATAN TUBUH MENGGUNAKAN IOT BERBASIS ANDROID Abdul Razaq Fatta Utama; Sunarsan Sitohang
Computer Science and Industrial Engineering Vol 12 No 4 (2025): Comasie Vol 12 No 4
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v12i4.9865

Abstract

IoT (Internet of Things) is a concept that utilizes the internet network to connect various devices into a machine and allows these devices to operate automatically by collecting data in real time. body accurately and quickly. The heart works as a blood pumping device and is a very fatal organ if it does not work properly. This condition is a heart disorder which involves a delay in blood supply to the heart muscles because the blood vessels are blocked and the heart becomes abnormal. Heart problems or abnormal functioning of the heart can result in a 50% death rate. However, some people have difficulty reaching hospitals because they live in rural areas. Thus, it is hoped that today's advanced technology can help make the work of nurses easier and can help the medical field work in diagnosing patients quickly and precisely, and can be reached by all people, such as health monitoring tools based on body temperature. This tool can diagnose normal or abnormal heart conditions based on detection sensors connected to the device using network media and uses Android as a platform that provides an intuitive interface so that it can be adjusted to the needs or desires of a client or researcher. In this way, a Prototype tool is created, which is an initial design model for a design before increasing product sales.
Analisis Keamanan dan Kinerja Jaringan pada Implementasi VLAN Sebagai Upaya Segmentasi Trafik Menggunakan Cisco Packet Tracer Sitohang, Sunarsan; Pangaribuan, Hotma
Jurnal Sains Informatika Terapan Vol. 4 No. 2 (2025): Jurnal Sains Informatika Terapan (Juni, 2025)
Publisher : Riset Sinergi Indonesia (RISINDO)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62357/jsit.v4i2.673

Abstract

Dalam era digital saat ini, kebutuhan akan jaringan komputer yang andal, efisien, dan aman semakin meningkat, terutama pada organisasi yang memiliki banyak departemen dan perangkat yang saling terhubung. Untuk menjawab tantangan tersebut, konsep Virtual Local Area Network (VLAN) merupakan salah satu solusi yang digunakan secara luas dalam arsitektur jaringan modern. Switch sebagai perangkat Dimana akan diterapkannya vlan dengan mode access dan trunk. Cisco Packet Tracer merupakan perangkat lunak yang dapat digunakan dalam mensimulasikan penerapan vlan untuk melakukan segmentasi trafik. Simulasi sebagai metode yang dipilih dikarenakan sangat memudahkan untuk memahami jaringan baik untuk pembelajaran maupun untuk melihat detail dari setiap konfigurasi. Simulasi ini dilakukan pada tiga switch dan tiga vlan id yaitu Vlan 10, 20, 30 memisahkan ruang guru, lab akutansi dan lab rekayasa perangkat lunak. Berdasarkan hasil pengujian simulasi konfigurasi vlan berjalan dengan baik dilihat dari antarvlan yang berbeda terblok komunikasinya sedangkan untuk yang sama vlannya aksesnya sukses. Dengan segmentasi yang telah diterapkan menciptakan keamanan jaringan yang lebih baik sebelumnya yaitu tanpa adanya penerapan vlan
PELATIHAN VIRTUAL LOCAL AREA NETWORK (VLAN) DAN ROUTING DI SEKOLAH SMK ADVENT Sitohang, Sunarsan; Pangaribuan, Hotma
PUAN INDONESIA Vol. 7 No. 1 (2025): Jurnal PUAN Indonesia Vol. 7 No. 1 Juli 2025
Publisher : ASOSIASI IDEBAHASA KEPRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37296/jpi.v7i1.420

Abstract

The development of technology has a very big impact on the world of education. Today's advanced technology is very helpful for humans in doing their work, so it must be applied to get its benefits. It is undeniable that there are still many educational worlds that are very reluctant to use technology. This reluctance can be caused by the lack of will to learn or inadequate facilities and the absence of motivation or training. Virtual Local Area Network (VLAN) is a logical grouping of users and equipment connected to a network that is connected to administratively designated ports on a switch without regard to the location of the switch. VLAN is a technology that allows a Local Area Network (LAN) to be divided into several different segments. VLAN also allows the merging of networks that are physically separated, but seem to be in the same segment. After the community service was carried out, it was seen that the students' knowledge had increased, marked by the results of the evaluation carried out at the end of each community service session in each topic of the material. The increase in students' understanding also increased in configuring VLANs, marked by the students' ability to do configuration exercises without any assistance from the community service. From this community service activity, it can be concluded that the community service went smoothly and the students' knowledge about Switches and VLANs increased.
Co-Authors Abdul Hamid Abdul Razaq Fatta Utama Adeh Berydika Andi Maslan Andi Maslan Anggiat Marubah Siringo ari purnama, ari purnama ARSYAD SUMANTIKA Arwin, elfani Azri Irawan Brilliant Hillary Sandy Daeli, Fonirius Dwi Saputra, Kevin Ganda Sirait Gregorius Teheq Buyanaya, Gregorius Teheq Buyanaya Halimah Tussa'Adiyah, Halimah Handoko, Koko Hotma Pangaribuan Hotma Pangaribuan Hotma Pangaribuan IRWANSYAH Junellson Kamaruddin Malik Bin Mohamad Lase, Fanotona Lubis, Kahfi Rama Putra Manik, Yosep Pangihutan Martan, Martan Gelisa Halawa Marubah Siringo, Anggiat Mendrofa, Nober Six Salvanius Muhammad Nur Sapi'i Mukhsinin, Nuriel Niati, Endang Pangaribuan, Hotma Putri, Sartika Diana rajagukguk, dormintang rajagukguk Renaldi, Encik Yoega rikson pandapotan tampubolon RIZKIANA, WIKI INDAH RIZKIANA Sabbram Agus Setiawan sam, samuel julianda berkat waruwu Sandy Sandy Saputra, Rios sari, anggi wijaya Setia Susilawati Setiawan, Sabbram Agus Silalahi, Putri Rosayanti Simanjuntak, Pastima Sirait, David Arif Setiawan Sirait, Ganda Situmorang, Nopriadi Stevent Suharyanto, Cosmas Eko supianto supianto Supianto Supianto, Supianto Very Karnadi Very Karnadi Virginiawan, Virginiawan Zendate, Sabar Serius