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All Journal Teknik dan Ilmu Komputer Jurnal Ilmiah Matrik JURNAL TEKNIK INFORMATIKA DAN SISTEM INFORMASI METIK JURNAL MDP Student Conference jurnal informasi teknologi dan sistem
Genrawan Hoendarto
Universitas Widya Dharma Pontianak
Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Library & Information Science

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APLIKASI SISTEM PERANGKAT LUNAK MENGGUNAKAN ALGORITMA ANT UNTUK MENGATUR PENJADWALAN KULIAH Saragih, Hoga; Hoendarto, Genrawan; Reza, Bobby; Setiyadi, Didik
Teknik dan Ilmu Komputer vol. 1 no. 3 July-September 2012
Publisher : Teknik dan Ilmu Komputer

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Abstract

Ant algorithm is one of Swarm Intellingence algorithms that can be used to solve NP-Hard problems. The scheduling of courses and lecturers which are done routinely each semester can be solved by exact methods and heuristic methods. Each institution has its own constraints in arranging the schedule. This paper discusses a case study in STMIK Widya Dharma. The type of ant algorithm used is the Rank Base Ant System suitable for scheduling based on ranking, which is the lecturers’ priority level. The other parameters are subjects, space, and time. It is expected that the software being analyzed with Ant algorithms can provide solutions to the scheduling problem. Keywords:   university timetable course,  An algorithm, ASRank
Aplikasi Mobile Money Management Dengan Fitur Optical Character Recognition Menggunakan Framework React Native Susana Lin; Genrawan Hoendarto
METIK JURNAL Vol 5 No 2 (2021): METIK Jurnal
Publisher : LP3M Universitas Mulia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47002/metik.v5i2.291

Abstract

Financial management is one of the important things in the process of achieving the financial goals of a person or an organization. Everyone has their own way to manages finances, this is dependent on the character and they goals. Financial management can be done conventionally, for example by manual method which is commonly done by write the expenses, income, and savings in a notebook. However, if the note must contain details of the transactions carried out, it can be considered less efficient. The use of Optical Character Recognition will be able to answer this problem, by taking a picture of the transaction, all transaction details will be recorded on the smartphone, and the user can validate the results obtained and save the record on the smartphone user. Users can also immediately see the total transactions made according to the selected time range without having to calculate each transaction made manually. The application will be designed using the react native framework which allows it to run on various platforms.
Distance Correlation-Based Regression Tree Algorithm For Structural Damage Detection Jimmy Tjen; Genrawan Hoendarto; Tony Darmanto; Thommy Willay
JATISI (Jurnal Teknik Informatika dan Sistem Informasi) Vol 10 No 2 (2023): JATISI (Jurnal Teknik Informatika dan Sistem Informasi)
Publisher : Lembaga Penelitian dan Pengabdian pada Masyarakat (LPPM) STMIK Global Informatika MDP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35957/jatisi.v10i2.5402

Abstract

This paper proposes a novel idea of a fault detection algorithm based on the Regression Tree (RT) algorithm from the decision tree learning and the distance correlation, which is the nonlinear version of Pearson’s correlation, to reduce the number of sensors without significantly decreasing the model predictive accuracy and the fault diagnosis capability. A numerical validation on an experimental dataset provided by the Los Alamos National Laboratory (LANL) with MATLAB software shows that the proposed algorithm has a comparable model predictive accuracy to the classical RT while requiring a smaller number of sensors (5 instead of 24) and more robust in detecting faults with false negative and positive rates < 15%. Furthermore, we demonstrate that our proposed algorithm runs about 4 times faster than the classical RT on an experimental dataset with 4096 samples on an 8-core, 16 GB RAM machine. In a real-life setup, the proposed algorithm can be used to provide a sensor installment plan on a structure. Such that, the user can still monitor the presence of a fault inside a building precisely, but with a cheaper maintenance cost.
RANCANG BANGUN APLIKASI PENGENALAN WAJAH UNTUK PASSWORD FILE DENGAN METODE JARINGAN SYARAF TIRUAN Genrawan Hoendarto; Vicni Iskandar
Jurnal Ilmiah Matrik Vol 21 No 1 (2019): Jurnal Ilmiah Matrik
Publisher : Direktorat Riset dan Pengabdian Pada Masyarakat (DRPM) Universitas Bina Darma

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1005.384 KB) | DOI: 10.33557/jurnalmatrik.v21i1.521

Abstract

Data security for computer users is increasingly becoming a concern because it is increasingly vulnerable to illegal access even though the file has been protected with a password. This is possible with the increasing number of applications aimed at hacking owner protection. Artificial neural network that was appointed in this study is one part of computer vision, which in this study is intended to make computers able to "see" through a webcam and recognize that face has access rights to the selected file. So that computers can distinguish facial images, it needs to be trained by applying the back propagation method. The reason for choosing facial recognition is because each person has a different face, so that it can be a more effective security key than conventional methods of making or accessing files that are on a computer.
Penggunaan Algoritma Binary Search Pada Aplikasi Kamus Bahasa Teochew Clesya, Clesya; Hoendarto, Genrawan; Sudjalmo, Sugito
MDP Student Conference Vol 4 No 1 (2025): The 4th MDP Student Conference 2025
Publisher : Universitas Multi Data Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35957/mdp-sc.v4i1.11237

Abstract

The preservation of regional languages, especially the Teochew dialect spoken in Pontianak City, Indonesia. Has been impacted by globalization and technological developments. Because of environmental forces that force them to adopt Indonesian, the younger generation hardly ever employs the Teochew dialect nowadays. The Teochew dialect risks extinction over time if it is not given proper consideration right now. The goal of this project is to create a Teochew digital dictionary application that can be utilized as a learning tool and is anticipated to help conserve the language in order solve these issues. The Binary Search technique was used in the design of the Teochew language dictionary application. By using the Binary Search method, a faster and more efficient word search can be ensured. In order to optimize the Binary Search, the dictionary database used provides essential Teochew language vocabulary that has been organized alphabetically. The test results show the Binary Search algorithm can recognize words more quickly than Sequential Search, so this makes it suitable for dictionary applications that require to find words more efficiently. It is expected that this application would serve as a means of education and aid in the preservation of Teochew culture and language.
Smart Microalgae-Based Air Purification: A Self-Sustaining Alternative to Household Plants Ferdynand, Hosea; Hoendarto, Genrawan; Chang, Calvin
MDP Student Conference Vol 4 No 1 (2025): The 4th MDP Student Conference 2025
Publisher : Universitas Multi Data Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35957/mdp-sc.v4i1.11239

Abstract

A self-sustaining, Internet of Things-integrated microalgae photobioreactor (PBR) is proposed in this study as an alternative to traditional household air purifying plants. In order to optimize microalgae development while reducing human involvement, the system combines a tubular PBR with an automatic water exchange mechanism and real-time IoT monitoring. CO₂-enriched air is continuously injected by an air bubbler, boosting photosynthesis and oxygen production. A drainage system eliminates extra water to preserve nutritional balance, and a water replenishment tank with a solenoid valve ensures controlled water exchange. Essential variables such as pH, turbidity, dissolved oxygen, and CO₂ concentration are monitored by the IoT system, which also provides alerts when maintenance is required. Purified air may naturally diffuse thanks to the passive air gap, which ensures continuous air filtration. By utilizing biotechnology and intelligent automation, this low-maintenance, sustainable system provides an efficient automated alternative for conventional plants in indoor air purification.
PENERAPAN SISTEM PENCARIAN DAN PEMINJAMAN BUKU BERBASIS ANDROID PADA SMP N 3 SUNGAI AMBAWANG Balbo, Florensius; Hoendarto, Genrawan; Tendean, Sandi
INTEKSIS Vol 11 No 1: Mei 2024
Publisher : LPPM Universitas Widya Dharma Pontianak

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Abstract

This application is built consisting of two sides, namely, Android-based application users or book borrowers and a website-based server for librarians as admins. The android application will be used by borrowers in searching and borrowing books online, using students' personal smartphones, while the website application will be used by librarians to record books in the school library. The process of searching for books can be done on the android application, while the process of borrowing books can be done if the borrower is already a member of the library. In order to become a member of the library, borrowers must enter their personal data on the register page. The process of borrowing books can be done if the book you are looking for is available in the school library. In the android application students can borrow books, then they can take books to the school library section and the admin will confirm the status of borrowing books. The process of fines for borrowers of books can be carried out if the borrower exceeds the borrowing time limit set by the school library administrator and the process of paying the fine is carried out by visiting the school library directly, as well as returning the books being borrowed. The admin will confirm on the website server application the total fines and the fine payment process can be carried out. Likewise with the process of confirming borrowing, returning and renewing books which can only be done by the library admin. Keywords: Design, Search, Loan, Android, Libraries
SISTEM INFORMASI PENGELOLAAN SURAT MASUK DAN SURAT KELUAR PADA DESA MALAPI KECAMATAN PUTUSIBAU SELATAN Sigan, Agustinus; Hoendarto, Genrawan; Willay, Thommy
INTEKSIS Vol 11 No 1: Mei 2024
Publisher : LPPM Universitas Widya Dharma Pontianak

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Abstract

Today's technology is at the core of every existing industry. Govermant’s office Malapi Putusibau is an industry engaged in Govermenet organisatio. In carrying out the filing of incoming and outgoing mail is still done manually and not computerized. In this paper, the author uses several research methods consisting of several components, namely research design using descriptive research design methods, data collection methods using interviews, observation and literature study, systems analysis techniques and system design techniques using Unified Modeling Language (UML). and application design techniques using the programming language HTML, CSS, javascript, and PHP. Application development using the XAMPP web server and MySQL as database storage. Based on the research conducted, a system of administrative transaction information for incoming and outgoing mail at Govermant’s office Malapi Putusibau was generated. Office is expected to assist in fast, precise and ackantorrate data processing. The conclusion is that the use of computer-based systems can improve service to kantorstomers through increasing company performance. The suggestions that can be given are the need for ackantorracy in entering data, the need for training system users and maintaining hardware and software that support the performance of the proposed system and the need for system evaluation if implemented. Keywords: Design, Incoming mail, Outgoing mail
PERANCANGAN APLIKASI MONITORING KUALITAS AIR BERBASIS ANDROID Armita, Angella; Hoendarto, Genrawan; Kartono, Kartono
INTEKSIS Vol 11 No 2: Nopember 2024
Publisher : LPPM Universitas Widya Dharma Pontianak

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Abstract

The importance of water for human survival has become crucial to ensuring its viability before being used and consumed, especially water for hygiene and sanitation purposes. To measure water quality, it is necessary to test the parameters that have been standardized by the government. So from that, it takes a device to measure the water quality adequately to know the water condition. In the design of the system, the prototype consists of a temperature sensor to detect temperature, a Total Dissolved Solid (TDS) sensor to measure the amount of solute solids, and a pH sensor for measuring the acidity or alkalinity of water, all controlled by NodeMCU ESP32. To facilitate monitoring of water quality, the measurements performed by the sensor will be displayed in an Android application. During the test, the temperature sensor obtained an accuracy of 98.15%, the TDS sensor received an accurate value of 98,82%, and the pH sensor achieved a precision of 97.52%. The readings from the data obtained from the prototype monitoring of water quality are close to the readings of the comparison. From the test results, it can be stated that the water quality monitoring prototype works well. Keywords— Android, Water Quality, Prototype, NodeMCU ESP32.
Sistem Kendali Otomatis Ruang Kelas Berbasis ESP32 Pada Universitas Widya Dharma Pontianak Liando, Felix; Hoendarto, Genrawan; tjen, jimmy
INTEKSIS Vol 12 No 1: Inteksis Vol. 12 No. 1
Publisher : LPPM Universitas Widya Dharma Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.15621199

Abstract

Seiring dengan perkembangan teknologi, Building Automation telah menjadi aspek penting dalam pengelolaan bangunan. Dengan otomatisasi yang canggih, kebutuhan akan pengelolaan manual semakin berkurang. Dalam konteks ini, teknologi Internet of Things (IoT) memainkan peran krusial dengan menyediakan solusi yang inovatif untuk mewujudkan konsep Building Automation. Pada Universitas Widya Dharma Pontianak (UWDP), salah satu masalah yang sering dihadapi adalah ketergantungan pada pengontrolan manual perangkat seperti air conditioner (AC) dan lampu. Seringkali setelah selesainya kegiatan perkuliahan, perangkat seperti AC dan lampu tidak dimatikan oleh pengguna ruangan. Oleh karena itu, IoT dapat menjadi salah satu solusi untuk mengatasi masalah ini. Dengan diterapkannya sistem kendali otomatis ini, diharapkan proses pengontrolan secara manual terhadap perangkat lampu dan AC dapat diminimalisir. Sistem ini memungkinkan pengalihan kendali perangkat menuju pengontrolan yang lebih efisien dan praktis melalui aplikasi mobile berbasis Android yang telah dirancang secara khusus. Setelah diterapkannya sistem ini, pengguna dapat mengontrol perangkat lampu dan AC sesuai dengan preferensi pengguna secara real-time dimanapun dan kapanpun, sehingga dapat meningkatkan kenyamanan dan kemudahan pengelolaan perangkat di ruang kelas tanpa perlu hadir secara langsung di dalam ruang kelas.
Co-Authors Armita, Angella Balbo, Florensius Bobby Reza Chang, Calvin Clesya, Clesya Didik Setiyadi Ferdynand, Hosea Gunawan Hoga Saragih Jimmy Tjen Kartono, Kartono Liando, Felix Sigan, Agustinus Sudjalmo, Sugito Susana Lin Tendean, Sandi Tjen, Jimmy Tony Darmanto Vicni Iskandar Willay, Thommy