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All Journal Jurnal Teknologi dan Manajemen Informatika Sinkron : Jurnal dan Penelitian Teknik Informatika Jambura Journal of Informatics Jusikom: Jurnal Sistem Informasi Ilmu Komputer Seminar Nasional Teknologi Informasi Komunikasi dan Administrasi [SEMINASTIKA] Journal of Computer Networks, Architecture and High Performance Computing Jurnal Teknik Informatika (JUTIF) Decode: Jurnal Pendidikan Teknologi Informasi SATIN - Sains dan Teknologi Informasi Jurnal Informatika: Jurnal Pengembangan IT The Indonesian Journal of Computer Science
Alfa Yohannis
Pradita University
Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Other

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Transformasi Digital Sistem Kehadiran untuk Budaya Hybrid Work dengan TOGAF Framework Mareta, Arvin; Yohannis, Alfa
Jurnal Informatika: Jurnal Pengembangan IT Vol 10, No 2 (2025)
Publisher : Politeknik Harapan Bersama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30591/jpit.v10i2.8335

Abstract

Since the end of the COVID-19 pandemic in 2023, hybrid work or work from anywhere (WFA) methods have become increasingly popular. While this work culture offers flexibility, it also poses challenges for companies in monitoring employee attendance. This study proposes the implementation of the TOGAF Framework to design an attendance management system that supports a hybrid work culture. The design process begins with a preliminary phase to identify user needs and the limitations of traditional systems. The system is designed using TOGAF ADM (Architecture Development Method), covering phases such as Architecture Vision, Business Architecture, Information System Architecture, and Technology Architecture. Technologies such as IoT, GPS, facial recognition, and mobile applications are employed to ensure system flexibility and accuracy. Testing is conducted in two stages: Blackbox Testing to verify functionality against specifications, and User Acceptance Testing (UAT) to evaluate system usability in real-world conditions. The test results show that the system meets all specifications, improves operational efficiency by up to 40%, and ensures the security and accuracy of attendance data. The system is also designed for integration with other modules, such as payroll and HRIS, to support strategic decision-making. This approach provides an effective and adaptive solution for monitoring employee attendance, whether working remotely or in the office, and enhances productivity in modern work environments.
Perancangan Strategi IT dari WFO ke WFH pada Industri MRO di Indonesia Setiawan, Eko; Glenny Chudra; Alfa Yohannis
SATIN - Sains dan Teknologi Informasi Vol 9 No 2 (2023): SATIN - Sains dan Teknologi Informasi
Publisher : STMIK Amik Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33372/stn.v9i2.996

Abstract

Semenjak COVID-19 banyak perusahan-perusahaan yang melakukan pekerjaan jarak jauh yaitu WFH (Work From Office) dan Work From Anywhere (WFA), dan setelah selesai banyak perusahaan yang masih menerapkan pekerjaan jarak jauh dikarenakan mempunyai banyak keuntungan dan kelebihan. Walaupun mempunyai banyak kelebihan ternyata pekerjaan jarak jauh juga mempunyai beberapa kekurangan yang perlu diperhatikan dan dihindari. Perusahaan Industri MRO (Maintenance, Repair, dan Operation) pesawat mengalami banyak permintaan yang dikarenakan perusahaan penerbangan yang sudah mulai pemulihan pasca terjadinya COVID-19. Dalam jurnal ini akan dibahas perpindahan pekerjaan dari yang sebelumnya pekerjaan dari kantor menjadi pekerjaan jarak jauh pada industri MRO pesawat yang sedang mengalami perkembangan pesat dan tetap ingin merasakan dampak baik dalam melakukan pekerjaan jarak jauh. Dalam implementasinya untuk menerapkan pekerjaan jarak jauh diperlukan suatu IT Strategi yang dibuat menggunakan kerangka kerja IT BalancedScoreCard (IT-BSC) yang memberikan pandangan penggunaan IT dan tujuan bisnis pada perusahan. Pengunaan IT-BSC disini untuk menyoroyi yantangan yang ada dalam menerapkan kerja jarak jauh serta bagaimana strategi IT dapat mengatasi masalah tersebut.
Enterprise Architecture for the Cruise Industry: A TOGAF-ADM and ArchiMate-Based Approach Watasendjaja, William; Chudra, Glenny; Yohannis, Alfa
Sinkron : jurnal dan penelitian teknik informatika Vol. 9 No. 4 (2025): Articles Research October 2025
Publisher : Politeknik Ganesha Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33395/sinkron.v9i4.15218

Abstract

Despite its growth and resilience over the last decades, the cruise industry faces significant challenges in its strategic, operational, and technology domains. The unique complexity of the industry requires cruise companies to adopt a structured approach to enterprise transformation. To address this problem, this aims to provide an Enterprise Architecture (EA) blueprint for the cruise industry. Using a case study of a leading cruise line, CruiseX, this study analyzes the operational model of the cruise line and apply two industry-leading standards: The Open Group Architecture Framework (TOGAF) and the ArchiMate modelling language. This study applies the four core phases of TOGAF Architecture Development Method (ADM) from the initial phase of Architecture Vision (Phase A), through the definition of Business Architecture, Information System Architecture, and Technology Architecture (Phase B to D). The ArchiMate language is utilized to visualize the core business processes, information systems, and technology architecture. By using TOGAF ADM as the technical guidelines and ArchiMate as the modeling language, the result of this study is a blueprint of core business processes, application and data that support each business processes, and the underlying technology infrastructure, that provides a structured framework and serves as an actionable tool for implementing enterprise architecture in cruise industry. This research also extends the application of TOGAF and ArchiMate to the under-research cruise industry domain. The study’s limitations include the reliance on publicly available data, the limited scope of business processes, and the lacks of practitioner validation, suggesting clear directions for future research.
Sentiment Analysis of Getcontact Application Reviews on Google Play Store Using Naive Bayes Algorithm Kurniawan, Rido Dwi; Yohannis, Alfa; Atmojo, Wahyu Tisno
Jurnal Teknik Informatika (Jutif) Vol. 6 No. 4 (2025): JUTIF Volume 6, Number 4, Agustus 2025
Publisher : Informatika, Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52436/1.jutif.2025.6.4.5248

Abstract

In the contemporary digital era, the increasing incidence of fraud and unwanted communications has become a serious concern, driving the adoption of security apps like GetContact. This study aims to analyze public perception of the GetContact app by conducting a systematic sentiment analysis of user reviews on the Google Play Store. Using a text mining framework, 990 user reviews were collected, processed to ensure data quality, and then classified using the Naive Bayes algorithm to determine sentiment polarity. Quantitative results show a significant dominance of negative sentiment, comprising 419 reviews (42.3%), followed by positive sentiment, comprising 291 reviews (29.4%), and neutral sentiment, comprising 280 reviews (28.3%). Qualitative analysis through data visualization reveals that the primary user complaints center on basic functionality issues such as login difficulties, while positive sentiment is driven by the perception that the app is very helpful. These findings provide critical actionable insights for developers to prioritize improvements in areas of greatest user concern. This study advances sentiment analysis by demonstrating the efficacy of Naive Bayes in classifying unstructured app reviews, offering a scalable approach to evaluating user feedback in mobile app development.
PROTOTYPE OF CONTACTLESS PAYMENT SYSTEM WITH RFID AND BLOCKCHAIN TECHNOLOGY INTEGRATED WITH MOBILE APPLICATION Jiustian, Danny; Yohannis, Alfa
Jurnal Teknik Informatika (Jutif) Vol. 5 No. 3 (2024): JUTIF Volume 5, Number 3, June 2024
Publisher : Informatika, Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52436/1.jutif.2024.5.3.2002

Abstract

The COVID-19 pandemic has led to a change in payment methods, with a shift towards cashless payments to avoid germs and viruses. Contactless payments, especially those using RFID technology, have become popular due to their convenience and no need to enter security codes. However, there is a risk of data manipulation in transaction records, leading to decreased trust and transparency. To solve this problem, this research develops an RFID contactless payment system connected with blockchain technology as the main goal of the research. Blockchain is known for its security and transparency, making it suitable for minimizing data manipulation that often occurs. This research will use the Sepolia Test Network of the Ethereum base network for development in terms of blockchain to serve as a security layer in this research. The Waterfall method will be used for application development, focusing on structured and linear stages such as requirements analysis, system design, implementation, testing, and maintenance. The application development process has shown positive results, with successful black box testing and the ability to track and validate transactions stored in the database and blockchain. This validation process is critical to ensure the integrity of transactions and detect any data manipulation.
Perancangan Strategi IT Untuk Industri Pendidikan Dalam Melakukan Remote Works Melalui IT Balanced Scorecard Manaek, Roy; Glenny Chudra; Alfa Yohannis
SATIN - Sains dan Teknologi Informasi Vol 9 No 2 (2023): SATIN - Sains dan Teknologi Informasi
Publisher : STMIK Amik Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33372/stn.v9i2.999

Abstract

Pandemi COVID-19 mengubah cara bekerja hampir diseluruh industri khususnya industri pendidikan, dikarenakan pandemi ini pembelajaran dilakukan secara hibrid, dan dalam jaringan. Setelah pandemi COVID-19 ternyata banyak sekolah maupun universitas yang menetapkan pembelajaran hibrid dan dalam jaringan. Pembelajaran yang dilakukan secara hibrid ataupun dalam jaringan ternyata walaupun mempunyai banyak kelebihan akan tetapi mempunyai banyak tantangan dan kerugian seperti kurangnya interaksi antara murid dan pengjar, murid jadi tidak fokus dan konsentrasinya mudah teralihkan. Dalam mengatasi tantangan ini diperlukan perencanaan jangka panjang khususnya perencaaan dan strategi IT yaitu dengan meggunakan IT Balanced ScoreCard (IT-BSC). IT-BSC merupakan pendekatan yang bagus dikarenakan kerangka kerja ini memastikan perencanaan merata dalam 4 area utama yaitu pelanggan, keuangan, proses internal, dan pembelajaran dan pertumbunhan. Melalui pembagian 4 area yang merata ini diharapkan strategi IT dalam industri penddikan dapat merealsasi keberhasilan dan menutupi serta menghindari kekurangan dalam industri pendidikan ketika menjalani pembelajaran secara hibdrid dan pembelajaran dalam jaringan (daring). Nantinya hasil akhir dari jurnal ini adalah pembuatan strategi IT yang diambil dari kekurangan dalam melakukan remote work, IT Strategi ini dibuat menggunakan IT Balanced Scorecard agar strategi dapat merata keempat area dan dapat diimplementasikan untuk jangka waktu yang panjang.
Penyusunan IT Balanced Scorecards untuk Pengaturan Kerja di Industri Kreatif Wiyanto, Novianthony; Glenny Chudra; Alfa Yohannis
SATIN - Sains dan Teknologi Informasi Vol 9 No 2 (2023): SATIN - Sains dan Teknologi Informasi
Publisher : STMIK Amik Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33372/stn.v9i2.1011

Abstract

Pandemi COVID-19 telah secara dramatis memengaruhi cara kita hidup dan bekerja. Secara khusus, pandemi ini telah mengubah industri kreatif, memaksa organisasi untuk beradaptasi dengan cara-cara baru dalam berbisnis. Hal ini menyebabkan penekanan kembali pada strategi TI dan pengukuran efektivitas investasi teknologi menggunakan IT Balanced Scorecard. Salah satu perubahan paling signifikan yang dibawa oleh pandemi adalah prevalensi kerja jarak jauh. Akibatnya, organisasi industri kreatif harus beradaptasi dengan cepat dengan cara kerja baru ini. Hal ini membutuhkan perubahan dalam strategi TI dengan fokus pada teknologi berbasis awan dan alat kolaborasi yang memungkinkan kerja jarak jauh. Hal ini meningkatkan kebutuhan akan IT Balanced Scorecard saat organisasi berusaha mengukur efektivitas investasi mereka dalam teknologi baru. Tren bekerja dari rumah menjadi luas selama pandemi, namun di dunia pasca pandemi, model hybrid kemungkinan akan muncul, di mana karyawan membagi waktu mereka antara bekerja di kantor dan bekerja dari mana saja. Hal ini membutuhkan pendekatan fleksibel dalam cara kerja organisasi, karena strategi TI memainkan peran penting dalam mendukung pergeseran ini. Secara keseluruhan, dunia pasca pandemi menawarkan tantangan dan peluang bagi organisasi di industri kreatif. Dengan mengadopsi Strategi TI dan menggunakan alat seperti IT Balanced Scorecard, mereka dapat beradaptasi dengan realitas baru kerja jarak jauh dan tetap kompetitif di pasar yang terus berkembang.
KOMPARASI MODEL-VIEW-CONTROLLER (MVC) VS. MODEL-VIEW-PRESENTER (MVP) PADA WAKTU EKSEKUSI DAN PENGGUNAAN MEMORI Yohannis, Alfa Ryano; Ong, Alexander Dennis; Ghazali, Arnold Christopher; Devisepte, Okhama Siladata; Christian, Brandon Josua; Chudra, Glenny; Siregar, Master Edison
PROSIDING SEMINASTIKA Vol. 5 No. 1 (2024): 5th SEMINASTIKA 2024
Publisher : Universitas Mulia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47002/seminastika.v5i1.837

Abstract

Pilihan pola arsitektur secara signifikan mempengaruhi kinerja dan efisiensi memori sistem perangkat lunak. Makalah ini menyajikan analisis komparatif antara dua pola arsitektur yang banyak digunakan: Model-View-Controller (MVC) dan Model-View-Presenter (MVP). Kajian pada makalah ini bertujuan memberikan wawasan mengenai pola arsitektur mana yang lebih unggul dalam hal kecepatan komputasi dan penggunaan memori, faktor-faktor penting dalam menentukan skalabilitas dan responsivitas aplikasi. Untuk melakukan evaluasi yang adil, kajian ini mengimplementasikan aplikasi identik menggunakan arsitektur MVC dan MVP. Kajian mengukur kecepatan eksekusi dan jejak memori dari masing-masing pola dalam berbagai skenario input yang berbeda. Dengan memberikan bukti empiris mengenai atribut kinerja MVC dan MVP, studi ini diharapkan dapat berkontribusi pada pengambilan keputusan yang lebih terinformasi dalam perancangan arsitektur, yang pada akhirnya meningkatkan kualitas dan efisiensi keseluruhan sistem perangkat lunak.
Pengembangan Aplikasi Monitoring Tambak Ikan Berbasis Internet of Things Dhamayanti, Raditia; Chudra, Glenny; Yohannis, Alfa
Jambura Journal of Informatics VOL 5, NO 2: OCTOBER 2023
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jji.v5i2.19415

Abstract

Milkfish is the largest freshwater fish commodity in Indonesia. Milkfish farming requires extra care and maintenance because these fish are sensitive to the environment, which can affect the growth and quality of fish. One important factor that affects milkfish growth is pond water quality, which can be measured through indicators such as temperature, oxygen levels, and water acidity. Today, water quality measurements are still traditionally done by coming directly to the pool, which requires additional time and effort. The purpose of this research is to develop e-chan as an Internet of Things-based innovation tool. The development of e-Chan is made using the SDLC (Software Development Lifecycle) method. The results showed the designed tool could be used to monitor pond water quality in real-time and transmit data to users through the app. Ikan bandeng merupakan komoditas ikan air tawar terbesar di Indonesia. Budidaya bandeng membutuhkan perawatan dan pemeliharaan yang ekstra karena ikan ini peka terhadap lingkungan yang dapat mempengaruhi pertumbuhan dan kualitas ikan. Satu faktor penting yang mempengaruhi pertumbuhan ikan bandeng adalah kualitas air tambak, yang dapat diukur melalui indikator seperti suhu, kadar oksigen, dan keasaman air. Saat ini, pengukuran kualitas air umumnya masih dilakukan secara tradisional dengan datang langsung ke kolam, yang membutuhkan waktu dan tenaga tambahan. Tujuan penelitian ini adalah mengembangkan e-chan sebagai alat inovasi berbasis Internet of Things. Pengembangan e-Chan dibuat dengan menggunakan metode SDLC (Software Development Lifecycle). Hasil penelitian menunjukkan alat yang dirancang dapat digunakan untuk memantau kualitas air tambak secara real-time dan mengirimkan data kepada pengguna melalui aplikasi.
Perancangan Sistem Donasi Kepada Penulis Ilmiah Dengan Blockchain Ethereum Berbasis Ekstensi Browser Laurenso, Justin; Yohannis, Alfa Ryano
The Indonesian Journal of Computer Science Vol. 13 No. 3 (2024): The Indonesian Journal of Computer Science
Publisher : AI Society & STMIK Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33022/ijcs.v13i3.3928

Abstract

This research highlights the challenges faced by scientific authors, especially regarding the lack of recognition, financial support, and appreciation. An innovative solution is proposed through the application of blockchain technology, specifically Ethereum, to improve transparency and security in the donation flow. Using such an approach, this research aims to provide a solution to the problem as well as open up wider collaboration opportunities within the research community. This research involves steps such as literature study, system analysis, system development, and report generation. In system development, the SDLC (Software Development Life Cycle) methodology with a structured waterfall model is used and is suitable for designing a donation system with blockchain technology. This research successfully developed a donation system integrated with the ethereum blockchain based on browser extensions. The unit testing results show that the functions used run well. It is hoped that this research can make a significant contribution in supporting scientific writers, strengthening transparency in the flow of donations, and becoming a foundation for further research in this field.
Co-Authors Aida Lestari Atmojo, Wahyu Tisno Christian, Brandon Josua Chudra, Glenny Dazki, Erick Devisepte, Okhama Siladata Dhamayanti, Raditia Eko Setiawan Ghazali, Arnold Christopher Glenny Chudra Indrajit, Eko Jiustian, Danny Laurenso, Justin Manaek, Roy Mareta, Arvin Ong, Alexander Dennis Permatasari, Ayu Novira Shinta Purawidjaja, Ratna Amalia Rido Dwi Kurniawan Setiawan, Richard Siregar, Master Edison Watasendjaja, William Wiyanto, Novianthony