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All Journal Jurnal Edukasi dan Penelitian Informatika (JEPIN) Journal of Information Systems Engineering and Business Intelligence InfoTekJar : Jurnal Nasional Informatika dan Teknologi Jaringan Sinkron : Jurnal dan Penelitian Teknik Informatika International Journal of Artificial Intelligence Research Language Literacy: Journal of Linguistics, Literature, and Language Teaching IJISTECH (International Journal Of Information System & Technology) KOMIK (Konferensi Nasional Teknologi Informasi dan Komputer) JURNAL TEKNOLOGI DAN ILMU KOMPUTER PRIMA (JUTIKOMP) Jurnal Mantik TRIDARMA: Pengabdian Kepada Masyarakat (PkM) REMIK : Riset dan E-Jurnal Manajemen Informatika Komputer Journal of Computer Networks, Architecture and High Performance Computing Jurnal Akuntansi, Manajemen dan Ilmu Ekonomi (JASMIEN) IJISTECH Journal of Applied Data Sciences Yayasan Cita Cendikiawan Al Khwarizmi Brilliance: Research of Artificial Intelligence Jurnal Minfo Polgan (JMP) Jurnal Masyarakat Indonesia Prioritas : Jurnal Pengabdian Kepada Masyarakat Data Sciences Indonesia (DSI) International Journal of Multidisciplinary Sciences and Arts Jurnal Manajemen Dan Akuntansi Medan Journal of Computer Science and Research Deli Sains Informatika JATAED: Journal of Appropriate Technology for Agriculture, Environment, and Development PERFECT: Journal of Smart Algorithms Jurnal Sistem Informasi Komputer
Muhammad Khoiruddin Harahap
Politeknik Ganesha Medan, Indonesia
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PENGARUH MODAL KERJA TERHADAP PROFITABILITAS PADA UMKM SERABI S.SE,MM, Yanti; Rosihana, Riscki Elita; Harahap, Muhammad Khoiruddin
Jurnal Manajemen Dan Akuntansi Medan Vol. 7 No. 1 (2025): Jurnal Manajemen dan Akuntansi Medan Januari 2025
Publisher : Yayasan Cita Cendikiawan Al Kharizmi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/jumansi.v7i1.6175

Abstract

To determine a company's success in generating profits, one can look at the company's ability to use working capital productively. Therefore, it is necessary to use profitability ratios to determine the extent of a company's ability to generate profits for its owners through all of its capabilities and resources. This study aims to determine whether there is an influence between working capital and profitability in Serabi MSMEs. The data source used in this study is primary data obtained from the field in the form of observation results. The data collection method was carried out through participatory and covert observation, which involved directly observing the object and participating in daily activities. The data was sourced from the financial reports of Serabi SMEs from March to June 2023. The data was analyzed using profitability ratios such as net profit margin (NPM), gross profit margin (GPM), and return on assets (ROA), yielding percentage levels that indicate the company's effectiveness in managing working capital. The results of this study are as follows: A. There is a relationship between working capital and profitability, meaning that the larger the working capital, the greater the profit obtained. B. Serabi SMEs are not yet efficient in managing their working capital, as evidenced by the NPM calculation, which is still below 5%, so it cannot be considered good. C. Serabi SMEs are capable of generating good gross profit, with the GPM ratio percentage nearly reaching 5%, and the company can be considered satisfactory. D. Serabi SMEs are productive in generating net profit, as evidenced by the ROA percentage exceeding 5%, so the company can be considered good.
Analysis of Learning Algorithms for Multilayer Neural Networks Harahap, Muhammad Khoiruddin; Pramono, Eko; Novita, Hilda Yulia; Maharina, Maharina; Sasongko, Dimas; Zonyfar, Candra
International Journal of Artificial Intelligence Research Vol 6, No 1 (2022): June 2022
Publisher : Universitas Dharma Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (328.455 KB) | DOI: 10.29099/ijair.v6i1.260

Abstract

The modern stage of development of science and technology is characterized by a rapid increase in the complexity of the created technical systems. The management of such systems requires the development of new management methods, since the modification and improvement of traditional management techniques does not always ensure the fulfillment of stringent requirements for management quality indicators. Classical control methods are mainly based on the theory of linear systems, while most real objects are non-linear. The problem of the synthesis of control systems under conditions of uncertainty is currently one of the central problems in the modern theory of automatic control. The complexity of the control object itself, structural, parametric and information uncertainties in the description of the control object, and the complexity of control problems, the multi criteria of optimization problems, the lack of possible analytical solutions, the need to take into account all the properties of disturbances, etc. The solution to this problem requires a search for alternative approaches to the design of control systems, one of which involves the introduction of neural network systems. Neural network control systems are a high-tech direction of control theory and belong to the class of nonlinear dynamic systems. High performance due to parallelization of input information in combination with the ability to train neural networks makes this technology very attractive for creating control devices in automatic systems. Neural networks can be used to build regulating and switching devices, reference, adaptive, nominal and inverse-dynamic models of objects, on the basis of which objects are studied, analysis of the influence of disturbances acting on an object, determination of the optimal control law, search or calculating the optimal program for changing the impact when changing the values of the parameters of the object and the characteristics of the input data. In addition, neural networks can be used to identify objects, predict the state of objects, recognize, cluster, classify, analyze a large amount of data arriving at high speed from a large number of devices and sensors, and the like. The ability to learn according to a given principle of functioning allows creating automated control systems that are optimal in terms of speed, energy consumption, etc. Naturally, in this case, it is possible to implement several principles of functioning and the transition from one to another. They are a universal tool for modeling multidimensional nonlinear objects and finding solutions to ill-posed problems.
Optimizing Convolutional Neural Networks for Image Classification Harahap, Muhammad Khoiruddin; Xu, Chlap Min; Zhu, Kong Huang
Journal of Computer Science and Research (JoCoSiR) Vol. 2 No. 1 (2024): Jan: CNN and Artificial
Publisher : Asosiasi Perguruan Tinggi Informatika dan Ilmu Komputer (APTIKOM) Provinsi Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65126/jocosir.v2i1.33

Abstract

This research explores the optimization of Convolutional Neural Networks (CNNs) for image classification through a numerical experiment. A simplified CNN architecture is trained on a small dataset comprising 100 randomly generated images with a resolution of 28×28. The model incorporates key components such as convolutional layers, batch normalization, max-pooling, and dense layers. Training involves 10 epochs using the Adam optimizer and sparse categorical cross-entropy loss. The results reveal promising training accuracy of 85%, but the validation accuracy, a crucial metric for generalization, lags at 60%. The discussion emphasizes the limitations of the small and synthetic dataset, underscoring the importance of real-world, diverse datasets for meaningful experimentation. The example serves as a foundation for understanding CNN training dynamics, with implications for refining models in more realistic image classification scenarios. The conclusion calls for future research to focus on advanced techniques, larger datasets, and comprehensive validation processes to enhance the reliability and applicability of CNN models in practical applications.
Perancangan Prototipe Monitoring Keberadaan Objek Menggunakan Gps Tracker Berbasis Android Pratama, Sandi; Khoiruddin Harahap, Muhammad
Jurnal Sistem Informasi Komputer ( SIKOM ) Vol. 1 No. 3 (2024): Volume 1 Nomor 3 September 2024
Publisher : Jurnal Sistem Informasi Komputer ( SIKOM )

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

Abstract

Penelitian ini menyajikan perancangan prototipe sistem monitoring keberadaan objek menggunakan GPS tracker berbasis Android. Prototipe ini memanfaatkan mikrokontroler ESP32 yang terintegrasi dengan modul GPS untuk mendapatkan data lokasi objek yang ditentukan. Dengan kemampuan konektivitas nirkabel yang dimiliki ESP32, data lokasi yang diperoleh akan dikirim ke aplikasi Telegram, sehingga pengguna dapat memantau posisi objek dari mana saja dan kapan saja. Proses pengembangan sistem ini meliputi desain perangkat keras dan perangkat lunak. Mikrokontroler ESP32 berfungsi sebagai otak dari sistem, mengolah data dari modul GPS dan mengirimkannya dengan jaringan Wi-Fi. Aplikasi Android dirancang dengan antarmuka yang sederhana, memudahkan pengguna dalam mengakses informasi lokasi dengan link Google Maps. Diharapkan prototipe ini dapat menjadi solusi praktis untuk berbagai kebutuhan monitoring, seperti pelacakan kendaraan, hewan peliharaan, atau barang maupun objek yang bergerak. Dengan meningkatnya kebutuhan akan keamanan dan pemantauan yang efektif, sistem ini menawarkan inovasi yang relevan dalam bidang teknologi pemantauan objek.
Perancangan Aplikasi Absensi Karyawan Menggunakan Metode Waterfall Dengan Qr Code Berbasis Web Pada Artmindo Kencana Group Dian Pratiwi, Aulya; Khoiruddin Harahap, Muhammad
Jurnal Sistem Informasi Komputer ( SIKOM ) Vol. 1 No. 2 (2024): Volume 1 Nomor 2 Mei 2024
Publisher : Jurnal Sistem Informasi Komputer ( SIKOM )

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Abstract

Artmindo Kencana merupakan sebuah perusahaan yang bergerak di bidang jual beli dan kontraktor. Pada perusahaan ini terdapat suatu sistem absensi karyawan yang masih berjalan secara manual, dimana dalam penerapan sistem absensi ini terdapat beberapa hal yang menjadi kendala, yaitu diantaranya adalah keefektifan dan efisiensi waktu dan proses pengabsenan, bentuk laporan absensi yang masih manual yang dapat menyulitkan dalam proses pencarian data, dan kemungkinan terjadinya data absensi yang hilang. Dengan alasan di atas maka penulis mencoba untuk memberikan alternatif pemecahan masalah dengan membuat suatu aplikasi sistem absensi yang akan mencatat data dan daftar kehadiran karyawan, waktu kedatangan, waktu pulang, yang akan dibuat secara sistematis dan terkomputerisasi dengan metode Qr Code, Metode penelitian yang digunakan adalah metode waterfall dan berbasis web. sehingga akan menghilangkan proses pencatatan kehadiran karyawan yang selama ini telah berjalan secara manual pada Artmindo Kencana dan juga dengan penggunaan metode Qr Code akan mengurangi tingkat kesalahan penginputan dalam proses absensi tersebut.
Perancangan Sistem Informasi Tracer Study Alumni Berbasis Web Menggunakan Metode Prototype pada Smks Bina Satria Medan Handayani, Saskia; Khoiruddin Harahap, Muhammad; Haris Lubis, Abdul
Jurnal Sistem Informasi Komputer ( SIKOM ) Vol. 1 No. 3 (2024): Volume 1 Nomor 3 September 2024
Publisher : Jurnal Sistem Informasi Komputer ( SIKOM )

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Abstract

Alumni merupakan sumber daya penting yang harus direkrut dan dikembangkan sejak dini. Keterlibatan alumni memberikan masukan yang membangun dan diharapkan dapat meningkatkan hubungan serta membangun citra eksternal institusi. Study Tracer adalah layanan yang ditawarkan oleh lembaga pendidikan untuk melacak siswa yang lulus dari lembaganya. Layanan ini dapat digunakan untuk penerimaan lulusan dan pengumpulan data terkait. Untuk memperoleh informasi tersebut, dilakukan survei terhadap alumni yang disebut Tracer Study Alumni (TSA). Penelitian yang dilakukan di SMK Bina Satria Medan tentang pendataan dengan menggunakan layanan website Google Form ini terkendala banyak hal, antara lain fitur dan fungsinya masih terbatas, serta banyaknya berkas yang harus dikerjakan. Penggunaan sistem informasi pelacak data dan aplikasi web akan memudahkan pengolahan data yang diberikan alumni oleh peneliti. Tidak hanya akan membantu peneliti atau guru yang ingin melakukan penelitian khalayak, tetapi juga akan sangat memudahkan lulusan untuk mengisi informasi kajian khalayak dan mendorong komunikasi antara siswa dan sekolah.
Sistem Informasi Bahan Inventory Berbasis Web di PT. Ayu Bumi Sejati Menggunakan Metode Waterfall Syifa Setiawan, Muhammad Afdhalu; Harahap, Muhammad Khoiruddin; Ginting, Rico Imanta
Jurnal Sistem Informasi Komputer ( SIKOM ) Vol. 2 No. 3 (2025): Volume 2 Nomor 3 September 2025
Publisher : Jurnal Sistem Informasi Komputer ( SIKOM )

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Abstract

Pengelolaan inventory barang merupakan aspek krusial bagi perusahaan produksi untuk mencegah kelebihan atau kekurangan stok dan biaya penyimpanan yang tinggi. Penelitian ini bertujuan merancang sistem informasi bahan inventory berbasis web di PT. Ayu Bumi Sejati dengan menggunakan metode waterfall. Melalui pendekatan ini, penelitian akan mengatasi masalah pengelolaan inventory yang saat ini dilakukan secara manual, yang rentan terhadap kesalahan dan ketidakefisienan. Dengan sistem yang diusulkan, perusahaan diharapkan dapat meningkatkan efisiensi pengelolaan inventory, mempermudah pemantauan persediaan, dan mempercepat proses pelaporan. Penelitian ini juga berkontribusi pada pengembangan teknologi informasi dalam industri manufaktur, serta memberikan kemudahan akses informasi bagi karyawan, sehingga meningkatkan produktivitas dan pengambilan keputusan di perusahaan.
Copyright Protection of Scientific Works using Digital Watermarking by Embedding DOI QR Code Harahap, Muhammad Khoiruddin; Khairina, Nurul
Journal of Computer Networks, Architecture and High Performance Computing Vol. 3 No. 2 (2021): Journal of Computer Networks, Architecture and High Performance Computing, July
Publisher : Information Technology and Science (ITScience)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/cnahpc.v3i2.1064

Abstract

Digital identifier is a technology used to prove ownership of a work. At this time, the Digital Object Identifier is a form of implementation of the digital identifier used in every scientific work. Not infrequently there are several cases of theft of ownership or copyright of a work, both scientific works, and certain other works. Watermarking is a technique created to protect the ownership of works. Watermarking techniques can be applied to several media such as audio, video, and also documents, one of which is the Portable Document Format document file. In this study, researchers want to build copyright protection for scientific works. Researchers offer research concepts using a Digital Object Identifier which is always installed on scientific papers to be published. The Digital Object Identifier will later become the basic data in building the Quick Response Code. The Digital Object Identifier of each scientific work will not be the same as each other, this will certainly make the Quick Response Code more unique. The results show that the watermarking process in building copyright protection of scientific works can be very successful Quick Response Code can be read and detected properly without experiencing lag time. Quick Response Code readings from several variations of motion are also not very influential, so it can be concluded that distance does not limit the detection of Quick Response Codes. From this research, researchers can deduce that the watermark is performed on the scientific work not only serves as the copyright protection of that scientific paper but can also be an alternative for other researchers to access the scientific work.
Internet of Things Based Automatic Visitor Counter Afriani, Dina; Ilham, Dirja Nur; Khairuman; Talib, Mohammed Saad; Harahap, Muhammad Khoiruddin
International Journal of Multidisciplinary Sciences and Arts Vol. 1 No. 1 (2022): International Journal of Multidisciplinary Sciences and Arts, Article August 20
Publisher : Information Technology and Science (ITScience)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/ijmdsa.v1i1.1615

Abstract

In modern times, there are many recreational areas including, Gunung Lampu Tapaktuan Tourism. This destination is very crowded with local and foreign tourists. This study aims to determine the number of visitors, optimize the place, evaluate the area's attractiveness, and know how the tool works using the experimental method. Furthermore, the Internet of Things (IoT) connects physical objects with electronics, software, sensors, and networks that make these objects collect and transmit data. From the results of the trials that have been carried out, every passing visitor is read by an ultrasonic sensor and then sent to the Thingspeak server using the internet network and the registered apikey. The ultrasonic sensor sends data that has been read to the thing peak channel that is connected to the device so that the results of the monitoring are the number of visitors in the form of graphs and tables. The results of testing the tool for seven days contained a total of 1,596 manual data, 1,582 people were detected, and 14 people were not detected. While visitors came out there were 1,559 people caught, and 37 people were not seen. From the seven days of testing, 99.12% of incoming visitors were detected and 97.68% of outgoing visitors were detected. So that it can be concluded, that this tool has been functioning correctly.
Implementation of Vibration Sensor and Pin Lock using Keypad for Charity Box Security Ilham, Dirja Nur; Candra, Rudi Arif; Budiansyah, Arie; Sipahutar, Erwinsyah; Harahap, Muhammad Khoiruddin; Anugreni, Fera
International Journal of Multidisciplinary Sciences and Arts Vol. 2 No. 1 (2023): International Journal of Multidisciplinary Sciences and Arts, Article January 2
Publisher : Information Technology and Science (ITScience)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/ijmdsa.v1i2.2050

Abstract

Security is a state in which people or things feel safe from ominous or unsettling hazards, which will then cause them to feel at ease and comfortable. There are many ways to achieve security, one of which is via utilizing and deploying technology. The use of security technology has advanced quickly in recent years, from low-tech to high-tech techniques. By using Arduino as a circuit controller to process input from a vibrating sensor and 4x4 keypad, output to a solenoid as a charity box lock, and a buzzer that serves as an alarm in case of theft, technological or automated methods can reduce charity box theft and also increase the security of charity box locks. The charity box security system tool is made to prevent the theft of charity boxes, which frequently happens in mosques. If someone tries to steal the charity box, an alarm will go off, and you need a pin that has been programmed on an Arduino Ide and stored in EEPROM to open the charity box cover, so this tool can stop charity box theft in mosques.
Co-Authors . Zulfan AA Sudharmawan, AA Abdul Samad Adidtya Perdana, Adidtya Aditya, Vikra Afriani, Dina Amir Mahmud Husein Amir Mahmud Husein, Amir Mahmud Amir Mahmud Husein, Mawaddah Harahap, Amir Amsar Yunan Amsar, Amsar Anugreni, Fera Ariany, Vince Arie Budiansyah Aritonang, Romulo P. Atabiq, Fauzun Ayesha Muazzam Candra, Rudi Arif Clawdia, Jhessica Dian Pratiwi, Aulya Dicky Apdilah Diding Kusnady Dimas Sasongko Dina Afriani Eko Pramono Epi, Yus Erwinsyah Sipahutar Evan Afri Evan Afri Fachrul Rozi Lubis Ferdy Riza Firnanda, Ary Ginting, Rico Imanta Handayani, Saskia Hantono Hantono Haris Lubis, Abdul Hariyanti, Irma Herry Setiawan Herry Setiawan Ilham, Dirja Nur Indra Surya, Indra Indra, Jamaludin Intan Maulina, Intan Jannah, Dina Miftahul Jhessica Clawdia Juanda Hakim Lubis Khairuman Khairuman Man Lubis, Fachrul Rozi Maharina, Maharina Maqfirah Mhd. Zulfansyuri Siambaton Miza, Khairul Mohammed Saad Talib Muhammad Hamza Muhammad Rian Almadani Mursidah natasha, Syarifah fadillah Natasya, Syarifah Fadillah Novita, Hilda Yulia Nursila Nursila Nursila, Nursila Nurul Khairina Nurul Khairina Nurul Khairina Pania, Sadri Paryono, Tukino Patel , Hrishitva Permata, Riski Surya Rina Rina Rizki, Lutfi Trisandi Rizky, Muharratul Mina Rosihana, Riscki Elita S.SE,MM, Yanti Salsa Dilah Cicilia Putri Sandi Pratama Saputra, Devi Satria Sepri Kurniadi Sihabudin Sihabudin, Sihabudin Sridewi, Nurmala Surya Hendraputra Syifa Setiawan, Muhammad Afdhalu Talib, Mohammed Saad Urmila, Tasya Wahyudi Lubis Xu, Chlap Min Zhu, Kong Huang Zonyfar, Candra