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Jurnal Penelitian Teknologi Informasi dan Sains
Published by INSTITUT TEKNOLOGI DAN BISNIS SEMARANG
ISSN : 29856280     EISSN : 29857635     DOI : 10.54066
Core Subject : Science,
Computer Science & IT
Ruang lingkup meliputi bidang Informatika, Teknik Mesin, Teknik Elektro,Teknik Sipil, Teknik Industri, Ilmu Komputer dan Sains.
Arjuna Subject : Ilmu Ekonomi, Ekonometrika dan Keuangan (semua kategori) - Ilmu Ekonomi, Ekonometrika dan Keuangan (Lain-Lain)
Articles 169 Documents
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Analisis Semiotika Transformasi Makna Nyai Rara Kidul dalam Ilustrasi Skin Kadita pada Gim Mobile Legends Rizky Noviasri; Dian Sofiah Kurnia Juliasari; Diva Ayu Alfajri; Ikhrima Syafanina
Jurnal Penelitian Teknologi Informasi dan Sains Vol. 4 No. 3 (2026): September: JURNAL PENELITIAN TEKNOLOGI INFORMASI DAN SAINS (JPTIS)
Publisher : Institut Teknologi dan Bisnis (ITB) Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54066/jptis.v4i3.4843

Abstract

This study examines the transformation of Nyai Rara Kidul’s meaning through two Kadita skins in Mobile Legends: Ocean Goddess (2018) and Heart of the Sea (2024). Roland Barthes’s semiotic approach is employed to analyse the denotative, connotative, and mythical meanings embedded in the skin illustrations. The findings reveal that Ocean Goddess maintains a close symbolic association with Nyai Rara Kidul through its representation of Javanese femininity, dominant use of green, kemben-style costume, and the title “Queen of the Southern Seas.” In contrast, Heart of the Sea reframes Nyai Rara Kidul through the visual identity of a Balinese woman and transforms the dark and threatening marine atmosphere into one that is bright, warm, and tropical, while retaining a sense of danger. Both skins recontextualise the sacred figure of Nyai Rara Kidul as a fantasy avatar that can be controlled, played, and commercially exchanged. This transformation demonstrates how Mobile Legends mediates Nyai Rara Kidul’s identity through Kadita, presenting it not as fixed or singular but as continuously evolving.
Analisis Keamanan VPN Site-to-Site Berbasis IPSec terhadap Serangan Sniffing pada Jaringan Multi-Gedung Roy Jordi; Fatoni Fatoni
Jurnal Penelitian Teknologi Informasi dan Sains Vol. 4 No. 3 (2026): September: JURNAL PENELITIAN TEKNOLOGI INFORMASI DAN SAINS (JPTIS)
Publisher : Institut Teknologi dan Bisnis (ITB) Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54066/jptis.v4i3.4854

Abstract

Inter-building data communication over public networks is highly susceptible to sniffing attacks, particularly when unencrypted protocols such as File Transfer Protocol (FTP) are used, allowing sensitive information to be intercepted by unauthorized parties. This study analyzes the effectiveness of an IPSec-based Site-to-Site Virtual Private Network (VPN) in securing inter-building communication at Universitas Bina Darma against sniffing attacks. An experimental method compared network conditions before and after VPN implementation on a topology of three MikroTik routers, three switches, and three client devices. Evaluation included connectivity testing, FTP login and file transfer simulations, and packet analysis using Wireshark with port mirroring. Results show the IPSec tunnel was successfully established using AES-256-CBC encryption and SHA-256 authentication, with all connectivity tests achieving 0% packet loss, indicating no impact on network performance. Before deployment, all FTP packets, including credentials and file contents, were captured and read in plaintext. After activation, FTP packets were no longer detected, and all traffic was encapsulated into 37 ESP packets in ciphertext form, unreadable to attackers. These results demonstrate that IPSec-based Site-to-Site VPN effectively enhances confidentiality without compromising network connectivity, providing a practical contribution to educational institutions and complementing previous research.
Rancang Bangun Website Layanan Jasa Kreatif Menggunakan Metode Prototype Aurollya Violleta Affifah; Iyat Ratna Komala; Yopi Hidayatul Akbar
Jurnal Penelitian Teknologi Informasi dan Sains Vol. 4 No. 3 (2026): September: JURNAL PENELITIAN TEKNOLOGI INFORMASI DAN SAINS (JPTIS)
Publisher : Institut Teknologi dan Bisnis (ITB) Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54066/jptis.v4i3.4855

Abstract

Twentyone is a creative service business in Sumedang that provides photography, videography, graphic design, and printing services. Its operational process still faces delayed responses to clients, overlapping booking schedules, and unintegrated order records. This study aims to design and develop a website for Twentyone creative services using the Prototype method. System development was carried out through problem identification, data collection, requirements analysis, prototype design, evaluation, iterative improvement, and implementation. The resulting system provides service information, portfolios, packages and prices, booking, payment, order-status checking, booking management, vouchers, operational expenses, transactions, fixed expenses, and reports according to the access rights of customers, Admin, and Owner. The system was developed as a web-based application using WordPress with supporting plugins and custom coding to accommodate Twentyone’s business processes. System testing used Black Box Testing by providing input data to the tested functions and comparing the actual results with the expected results. The findings indicate that the website can support booking, payment, data management, transaction processing, and report presentation in a more structured manner. The implementation is expected to improve service accessibility for customers and support the operational management of Twentyone.  
Pengaruh Variasi Air Fuel Ratio dan Sudut Pengapian Menggunakan ECU Standar dan ECU Aftermarket terhadap Konsumsi Bahan Bakar Motor Bensin 125 LED Setyadmaja, Daffa Ilham; Hadromi Hadromi; Rizqi Fitri Naryanto
Jurnal Penelitian Teknologi Informasi dan Sains Vol. 4 No. 3 (2026): September: JURNAL PENELITIAN TEKNOLOGI INFORMASI DAN SAINS (JPTIS)
Publisher : Institut Teknologi dan Bisnis (ITB) Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54066/jptis.v4i3.4869

Abstract

Fuel consumption efficiency is an important aspect of modern automotive technology because it is closely related to operational costs, energy efficiency, and environmental sustainability. In electronic fuel injection (EFI) engines, fuel consumption is influenced by combustion parameters such as the Air Fuel Ratio (AFR), ignition timing, and the Electronic Control Unit (ECU). This study aimed to analyze the effects of AFR variation and ignition timing using standard and aftermarket ECUs on the fuel consumption of a gasoline motorcycle 125 LED motorcycle. An experimental method with a factorial design was employed using two ECU types, three AFR settings (12.5, 13.5, and 14.7), and three ignition timing settings (standard, +2°, and +4°). Fuel consumption tests were conducted at engine speeds of 3000 rpm, 5000 rpm, and 7000 rpm. The obtained data were analyzed using descriptive statistics followed by Three-Way Analysis of Variance (ANOVA). The results indicate that AFR, ignition timing, and ECU type produce different fuel consumption characteristics at each engine speed. The combination of an aftermarket ECU with appropriate AFR and ignition timing settings provides better fuel consumption efficiency than the standard ECU.
Perancangan Sistem Informasi Pencarian Stok Obat di Apotek Adelia Bersaudara Bobi Handoko; Widhy Andari; Abdul Zaky; Agus Salim; Marian Tonis
Jurnal Penelitian Teknologi Informasi dan Sains Vol. 4 No. 3 (2026): September: JURNAL PENELITIAN TEKNOLOGI INFORMASI DAN SAINS (JPTIS)
Publisher : Institut Teknologi dan Bisnis (ITB) Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54066/jptis.v4i3.4897

Abstract

The search for drug stock at Adelia Bersaudara Pharmacy is still carried out manually, requiring staff to spend considerable time determining the type of medicine, the remaining stock, and its storage location on the shelves, which increases the risk of recording errors and delayed reporting. This study aims to design a web-based drug stock search information system at Adelia Bersaudara Pharmacy. This research is a Research and Development (R&D) study using the Waterfall development model, applying a quantitative approach during the product feasibility testing stage. The research subjects were the pharmacy head and pharmacy staff (3 people, using total sampling), with data collected through observation and documentation, then analyzed through functional testing and system feasibility testing using questionnaires. The results show that the previous system was manual and not integrated, making the drug search process inefficient. Through this research, a web-based Drug Stock Search Information System (SIPASTOB-AB) was successfully designed and implemented, providing integrated, real-time information on drug names, stock quantities, and storage locations. Functional testing results showed a system success rate of 100%, while feasibility testing results showed a feasibility level of 100%. It can therefore be concluded that the developed web-based drug stock search information system is feasible for use and is able to improve work efficiency and the accuracy of drug inventory information at Adelia Bersaudara Pharmacy.
Analisis Presisi Klasifikasi Tahap Pengeringan Kayu pada Sistem Pemantauan Suhu Berbasis IoT Cristoforus Donda Gomes Martins; R. Soelistijadi; Saefurrohman Saefurrohman
Jurnal Penelitian Teknologi Informasi dan Sains Vol. 4 No. 3 (2026): September: JURNAL PENELITIAN TEKNOLOGI INFORMASI DAN SAINS (JPTIS)
Publisher : Institut Teknologi dan Bisnis (ITB) Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54066/jptis.v4i3.4907

Abstract

Good wood drying depends on keeping the oven temperature within a predetermined range. Manual temperature monitoring makes process quality highly dependent on operator presence and accuracy. This study develops a web-based wood oven temperature monitoring system using NodeMCU ESP8266, DHT11 sensor, LDR light sensor, and OLED display. Sensor data are sent to the server in JSON format through HTTP POST every two seconds and displayed on a real-time dashboard. The system was developed using the Rapid Application Development method. Evaluation was carried out through automated black box testing, firmware compilation verification, data transmission testing, and Monte Carlo precision simulation with 10,000 samples per stage. All functional scenarios passed and the firmware compiled successfully. The precision simulation shows that the DHT11 tolerance of ±2 °C reduces classification accuracy for drying stages with a narrow range. This finding confirms that classification accuracy is determined not only by program logic but also by the relationship between sensor tolerance and decision class width.
Rekayasa Balik dan Evaluasi Kinerja Berbasis Dinamika Fluida Komputasi untuk Pemetaan Operasi dan Revitalisasi Turbin Kaplan Lama di PLTM Sawitto Achmad Walid; Irwanda Yuni Pungkiarto; Khoirul Anwar
Jurnal Penelitian Teknologi Informasi dan Sains Vol. 4 No. 3 (2026): September: JURNAL PENELITIAN TEKNOLOGI INFORMASI DAN SAINS (JPTIS)
Publisher : Institut Teknologi dan Bisnis (ITB) Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54066/jptis.v4i3.4924

Abstract

This study evaluates the performance while supporting the revitalization of old Kaplan turbines at the Sawitto Mini Hydropower Plant (PLTM) by combining reverse engineering and Computational Fluid Dynamics (CFD) under conditions of incomplete technical documentation. The existing runner geometry was captured using structured-light-based three-dimensional scanning, reconstructed into a digital CAD model, and then analyzed across multiple head, discharge, guide vane opening, and runner angle conditions. Steady-state CFD simulations were employed to assess hydraulic efficiency, shaft power, and operational stability. The results indicate that the runner angle critically determines turbine performance. The 0° configuration yields the overall best performance with the highest efficiency, the most stable power-discharge characteristics, and the widest high-efficiency region on the efficiency contour map, thereby indicating the most optimal blade setting alignment. The +10° configuration increases discharge capacity and output at medium to high heads, but narrows the efficient operating range and increases sensitivity to hydraulic losses outside design conditions. The −10° configuration is relatively stable at low heads and discharges, but restricts flow and reduces output at higher loads. The integration of reverse engineering and CFD provides a practical basis for operational mapping, performance recovery, maintenance planning, and the revitalization of aging mini-hydro turbines.
Perancangan Aplikasi Penerimaan Siswa Baru pada SMA Negeri 1 Sultan Daulat Kota Subulussalam Berbasis Web Responsive Farda Richa Syarkam; Ridwan Ridwan
Jurnal Penelitian Teknologi Informasi dan Sains Vol. 4 No. 3 (2026): September: JURNAL PENELITIAN TEKNOLOGI INFORMASI DAN SAINS (JPTIS)
Publisher : Institut Teknologi dan Bisnis (ITB) Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54066/jptis.v4i3.4940

Abstract

The development of information technology in the field of education encourages schools to use web-based information systems to improve the quality of administrative services, one of which is in the new student admission process. SMA Negeri 1 Sultan Daulat still uses a manual registration process which causes a number of issues such as long queues, delays in delivering information, and difficulties in managing student registration data. This study aims to create and develop a web-based program for new student admissions that simplifies the registration process and helps schools handle registration data more efficiently and systematically. The Waterfall process, which includes phases such as needs analysis, system design, implementation, and system testing, is used to build this system. This application was created using a MySQL database, the CodeIgniter framework, and the PHP programming language. The results of the study state that the web-based new student admission application that was built can help online student registration, file uploads, data verification, graduation announcements, and data management by admins in an integrated manner. From the results of trials using Black Box Testing, all core web features can function well according to the designed functional needs.
Penerapan Mini Cooler Berbasis Minyak Kelapa dan Beeswax Sebagai Media Pembelajaran untuk Penguatan Literasi Sains Siswa SMA Neng Tresna Umi Culsum; Rinda Mulmeyda; Citra Santikasari; Roni Adi Wijaya; Ika Keumala Fitri; Key Yodiananda Divia; Nadine Davina Nawing; Cut Gianna Naifa Dharmawan; Ni Putu Ryane Pinajeng; Meta Arishanti
Jurnal Penelitian Teknologi Informasi dan Sains Vol. 4 No. 1 (2026): : JURNAL PENELITIAN TEKNOLOGI INFORMASI DAN SAINS (JPTIS)
Publisher : Institut Teknologi dan Bisnis (ITB) Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54066/jptis.v4i1.5057

Abstract

Scientific literacy among high school students needs to be strengthened through contextual and experiential learning that connects scientific concepts with their applications in everyday life. This community service program aimed to support teachers in developing experiment-based learning activities to enhance students’ scientific literacy through the utilization of coconut oil and beeswax as thermal energy storage materials. The activities consisted of scientific material delivery, experiments involving coconut oil and beeswax, assembly of a simple mini cooler prototype, and observation and temperature measurement. The results showed that participants' understanding of phase change and energy concepts improved, with an average post-test score of 98.75; furthermore, participants successfully produced a mini cooler prototype based on coconut oil and beeswax. The prototype can be utilized as a learning medium to introduce phase changes, heat transfer, and thermal energy storage concepts. The activity also provided teachers with an applicable approach to designing experimental learning that encourages students to observe phenomena, interpret experimental data, and apply scientific concepts to real-life situations. This program demonstrates the potential of locally available materials and simple experimental technology to support the development of innovative science learning and strengthen scientific literacy among high school students.

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