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All Journal Jurnas Nasional Teknologi dan Sistem Informasi Jurnal Rekayasa Hijau MIND (Multimedia Artificial Intelligent Networking Database) Journal REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat Journal Social Science And Technology For Community Service INTERNAL (Information System Journal)
Umaroh, Sofia
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Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Other

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Peningkatan Keamanan Basis Data menggunakan Kombinasi Algoritma RC4 dan SHA3-512 Nurjaman, Asep Rizal; Umaroh, Sofia
Rekayasa Hijau : Jurnal Teknologi Ramah Lingkungan Vol 8, No 2 (2024)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/jrh.v8i2.162-171

Abstract

AbstrakPerkembangan teknologi yang pesat membuat banyak sistem menjadi terdigitalisasi dan terintegrasi. Banyak sistem yang memuat data-data yang penting seperti profil pengguna, no handphone, e-mail, nomor kependudukan, bahkan hingga file-file dokumen yang bersifat rahasia. Dalam dunia maya, banyak kejahatan yang terjadi, dengan digitalisasi menyebabkan kejahatan seperti pencurian data, perubahan data atau bahkan pengambil alihan akun yang menyebabkan pemilik aslinya tidak dapat masuk ke dalam sistem disebabkan akun yang dimiliki telah diambil alih oleh hacker. Penelitian ini bertujuan untuk mengamankan informasi-informasi penting milik pengguna dengan menggunakan kombinasi RC4 dan SHA3-512 pada kunci agar saat sebuah sistem diretas dan masuk ke basis data, attacker tidak dapat langsung mendapatkan informasinya namun harus memecahkan informasi yang terenkripsi tersebut. Hal ini membuat attacker membutuhkan waktu untuk memecahkan informasi-informasi pengguna.Kata kunci: SHA3-512, Enkripsi, Dekripsi, Hashing, RC4, Algoritma AbstractRapid technological developments mean that many systems are becoming digitalized and integrated. Many systems contain important data such as user profiles, cellphone numbers, e-mails, population numbers, and even confidential document files. In cyberspace, many crimes occur, with digitalization causing crimes such as data theft, changing data or even taking over accounts which cause the original owner to not be able to enter the system because his account has been taken over by hackers. This research aims to secure the user's important information by using a combination of RC4 and SHA3-512 in the key so that when a system is hacked and entered into the database, the attacker cannot immediately get the information but must crack the encrypted information. This makes the attacker need time to decipher user information.Keywords: SHA3-512, Encryption, Decryption, Hashing, RC4, Algorithm
Training on Designing UI/UX using Design Thinking and Figma at SMKN 4 Bandung Umaroh, Sofia; Yudianto, Fauzi; Istifah, Istifah
REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat Vol 5, No 2 (2024): REKA ELKOMIKA
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekaelkomika.v5i2.99-108

Abstract

The emergence of User Interface (UI) and User Experience (UX) Design in the world is now attracting more people who want to learn about it. SMKN 4 Bandung is one of the schools that have an industry-class curriculum, where students are provided with a learning program related to industrial technology. This training is divided into three stages: Pre-Test, Training, and Post-Test. The Pre-Test is used to assess the extent of their understanding of UI and UX. During the training process, there is an introduction and implementation of UI and UX concepts. The results of the Pre-Test showed that 90% of the students were not familiar with UI and UX. The Post-Test results confirm that, overall, this community engagement in the industrial class on UI and UX has successfully improved the knowledge of the students of SMKN 4 Bandung, with a N-gain score of 0.45 considered medium improvement.
Influence of Data Scaling and Train/Test Split Ratios on LightGBM Efficacy for Obesity Rate Prediction FAHRUDIN, NUR FITRIANTI; PUTRA, KURNIA RAMADHAN; UMAROH, SOFIA; LAUTAN, GAMAS BLOORY
MIND (Multimedia Artificial Intelligent Networking Database) Journal Vol 9, No 2 (2024): MIND Journal
Publisher : Institut Teknologi Nasional Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/mindjournal.v9i2.220-234

Abstract

AbstrakNormalisasi adalah proses yang tidak dapat dilewatkan dalam data mining yang membantu menyesuaikan nilai atribut data ke skala yang sama. Dalam konteks data mining, perbedaan skala antar atribut dapat menyebabkan kesalahan dalam pemodelan atau interpretasi hasil. Penggunaan normalisasi dalam pra-pemrosesan masih diperdebatkan, terutama ketika menggunakan algoritma dari kelompok pohon keputusan.  Penelitian ini membandingkan model dengan data yang dinormalisasi dan tidak dinormalisasi dengan menggunakan metode normalisasi, MinMaxScaler, MaxAbsScaler, dan RobustScaler. Hasil penelitian menunjukkan bahwa model LightGBM tanpa normalisasi memiliki tingkat akurasi sebesar 96,6 dalam mengklasifikasikan tingkat obesitas pada data saat ini. Tidak hanya normalisasi yang mempengaruhi hasil klasifikasi, tetapi juga jumlah rasio antara data pelatihan dan pengujian. Penelitian menunjukkan bahwa semakin besar persentase data yang digunakan untuk pelatihan, semakin tinggi tingkat akurasinya. Pada dataset obesitas, rasio 80:20 memiliki akurasi hingga 97%.Kata kunci: Decision Tree, LightGBM, Obesitas, Data Mining, KlasifikasiAbstractNormalization is an essential process in data mining that helps adjust the values of data attributes to the same scale. In data mining, differences in attribute scales can lead to errors in modeling or interpreting results. Normalization in preprocessing is still debated, particularly when using algorithms from the decision tree family. This study compares models with normalized and non-normalized data using normalization methods such as MinMaxScaler, MaxAbsScaler, and RobustScaler. The results show that the LightGBM model without normalization achieved an accuracy rate of 96.6% in classifying obesity levels in the current dataset. Not only does normalization affect classification results, but the ratio between training and testing data also plays a role. The study indicates that the larger the percentage of data used for training, the higher the accuracy rate. In the obesity dataset, an 80:20 ratio resulted in an accuracy rate of up to 97%.Keywords: Decision Tree, LightGBM, Obesity, Data Mining, Classification
Penerapan Geo-Spatial Business Intelligence dalam Analisis dan Visualisasi Survey Kondisi Jalan Arsyad, Zulkifli; Umaroh, Sofia
INTERNAL (Information System Journal) Vol. 7 No. 2 (2024)
Publisher : Masoem University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32627/internal.v7i2.1028

Abstract

The road pavement condition survey aims to determine the Pavement Condition Index (PCI) value, which serves as the main indicator in determining road treatment strategies, such as routine maintenance, periodic maintenance, structural improvements, or reconstruction. In the manual execution of the road condition survey, the process involves walking along the road sections to be surveyed, taking samples from specific sections, which can take a relatively long time. In this study, an innovation was introduced to use video for recording road sections and performing analysis using an application. Data collection for the survey is carried out using video cameras with GPS technology mounted on vehicles to record road conditions in real-time. The telemetry data generated includes information on latitude, longitude, and vehicle speed, which is then further analyzed to create a dataset containing damage types, severity levels, damage dimensions, and other parameters. With the vast extent of provincial road sections reaching thousands of kilometers, Geospatial Business Intelligence (BI)-based street map technology is used to visualize and analyze survey results more effectively and quickly. The results of the study show that video and telemetry technology provide detailed information, while integration with Geospatial BI enhances the efficiency and speed of strategic decision-making related to road treatment.
Design Thinking and Cognitive Walkthrough for Website User Experience Improvement Umaroh, Sofia; Fitrianti, Nur; Rahayu, Astri; Ramadhan Putra, Kurnia
Jurnal Nasional Teknologi dan Sistem Informasi Vol 10 No 3 (2024): Desember 2024
Publisher : Departemen Sistem Informasi, Fakultas Teknologi Informasi, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/TEKNOSI.v10i3.2024.174-181

Abstract

Desa Linggar located in the Rancaekek sub-district, Bandung Regency has implemented a website that functions as a medium of public information needed by the Desa Linggar community. In implementing the website, its user interface (UI) and user experience (UX) should accordance with the user's needs. However, the use of the Desa Linggar website is still not effective, especially in disseminating information to the Desa Linggar community because the UI/UX of the website is still less attractive. Thus, this study evaluates and improves the UI/UX on the Desa Linggar website using the design thinking method, cognitive walkthrough to test the prototype, UEQ (User experience Questionnaire) with the target respondent before repairing 45 respondents and the target after repairing 6 respondents and adopting the gestalt principle to design improvement method according to user psychology. The results of the research on the Desa Linggar website obtained a learning ability value of 90%, effectiveness of 0.10 or 10%, and efficiency of 0.02 with users completing 2% of each given task and evaluating the user experience of improvement using the UEQ questionnaire with an average value of scale. efficiency 2,583, stimulation 2,458, attractiveness 2,306, perspicuity 2,250, Dependability 2,125, and novelty 1,833 with “excellent” rate intervals.
Perancangan Interaksi Antarmuka Website Sebaran COVID19 Menggunakan Metode Design Thinking dengan Usability Testing Umaroh, Sofia; Putra, Kurnia Ramahdan; Ibrahim, Andrika Zainal
Jurnal Nasional Teknologi dan Sistem Informasi Vol 8 No 2 (2022): Agustus 2022
Publisher : Departemen Sistem Informasi, Fakultas Teknologi Informasi, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/TEKNOSI.v8i2.2022.52-63

Abstract

Kebutuhan penyajian informasi merupakan hal yang penting terutama dalam literasi, karena pada kondisi saat ini literasi informasi berperan penting dalam penyebaran informasi mengenai COVID-19. Adapun masalah yang ditemukan diantaranya antarmuka yang kurang menarik, perpaduan warna yang kurang tepat, penyampaian informasi yang tidak menarik serta tata letak informasi yang kurang tepat. Dengan demikian, pada penelitian dilakukan perancangan interaksi website sebaran COVID-19 yang mempunyai nilai interaksi pengalaman pengguna yang baik. Perancangan ini menggunakan metode Design Thinking, yang terdiri dari tahapan Empathize, Define, Ideate, Prototype dan Testing. Pada tahap pengujian, penelitian ini menggunakan Usability Testing dengan perhitungan System Usability Scale (SUS) untuk menguji kegunaan dari prototipe. Pengujian pengalaman pengguna terhadap prototipe pada penelitian ini menggunakan User Experience Questionnaire (UEQ). Hasil pengujian kegunaan dengan perhitungan SUS diperoleh hasil 76.78, nilai ini berada pada tingkatan baik (grade B). Hasil pengujian pengalaman pengguna dengan UEQ diperoleh skala daya tarik sebesar 1,833 berada pada tingkatan baik, skala kejelasan sebesar 1,536 berada pada level diatas rata-rata, skala efisiensi sebesar 1,893 berada pada tingkatan baik, skala ketepatan sebesar 1,643 berada pada tingkatan baik, skala stimulasi sebesar 2,321 berada pada tingkatan luar biasa, skala kebaruan sebesar 1,250 berada pada tingkatan baik. Dapat disimpulkan bahwa prototipe yang diusulkan menurut skala UEQ memiliki pengelaman pengguna yang positif.
Design Thinking and Cognitive Walkthrough for Website User Experience Improvement Umaroh, Sofia; Fitrianti, Nur; Rahayu, Astri; Ramadhan Putra, Kurnia
Jurnal Nasional Teknologi dan Sistem Informasi Vol 10 No 3 (2024): Desember 2024
Publisher : Departemen Sistem Informasi, Fakultas Teknologi Informasi, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/TEKNOSI.v10i3.2024.174-181

Abstract

Desa Linggar located in the Rancaekek sub-district, Bandung Regency has implemented a website that functions as a medium of public information needed by the Desa Linggar community. In implementing the website, its user interface (UI) and user experience (UX) should accordance with the user's needs. However, the use of the Desa Linggar website is still not effective, especially in disseminating information to the Desa Linggar community because the UI/UX of the website is still less attractive. Thus, this study evaluates and improves the UI/UX on the Desa Linggar website using the design thinking method, cognitive walkthrough to test the prototype, UEQ (User experience Questionnaire) with the target respondent before repairing 45 respondents and the target after repairing 6 respondents and adopting the gestalt principle to design improvement method according to user psychology. The results of the research on the Desa Linggar website obtained a learning ability value of 90%, effectiveness of 0.10 or 10%, and efficiency of 0.02 with users completing 2% of each given task and evaluating the user experience of improvement using the UEQ questionnaire with an average value of scale. efficiency 2,583, stimulation 2,458, attractiveness 2,306, perspicuity 2,250, Dependability 2,125, and novelty 1,833 with “excellent” rate intervals.
Implementation of MDLC Method to Create Promotional Videos for Tahu Bakso Mak Cito Putra, Kurnia Ramadhan; Fahrudin, Nur Fitrianti; Umaroh, Sofia
Journal of Social Sciences and Technology for Community Service (JSSTCS) Vol 5, No 1 (2024): Volume 5, Nomor 1, March 2024
Publisher : Universitas Teknokrat Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33365/jsstcs.v5i1.3611

Abstract

The use of technology has a good impact in various sectors, including the culinary industry. Tahu Bakso Mak Cito, located in Leuwiliang, Bogor, faces challenges in adapting to technology, especially for marketing. This community service aims to overcome the problems faced by Tahu Bakso Mak Cito in promoting its products. The proposed solution is to create promotional videos by utilizing multimedia for effective marketing. A SWOT analysis was first carried out to identify the challenges faced by Tahu Bakso Mak Cito, including limited marketing strategies, competition from larger food companies, low production scale, and short product shelf life. After the problem has been identified using the SWOT Analysis, video development is then carried out by following the multimedia development methodology, namely the Multimedia Development Life Cycle, which includes initialization, blueprint design, asset preparation, product development, as well as testing and validation. To overcome this problem, solutions are proposed, including multimedia and social media marketing strategies. It is hoped that the success of making a promotional video for Tahu Bakso Mak Cito can improve their marketing capabilities in this era of technological development, which is not only useful for increasing brand awareness, but also becomes an inspiration for entrepreneurship. The positive response from the owners of Tahu Bakso Mak Cito UMKM was that they felt it was helpful to promote this community service activity.
Mengukur Kesuksesan Sistem Informasi Satuan Kredit Kemahasiswaan (SIMSKK) menggunakan Model DeLone McLean UMAROH, SOFIA; UTAMI, SABRINA AZIZA; HERNAWAN, HASNAURA ATHAVANIA; ADINDA, NAJWA; ANGELICA, EVLYN
MIND (Multimedia Artificial Intelligent Networking Database) Journal Vol 10, No 2 (2025): MIND Journal
Publisher : Institut Teknologi Nasional Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/mindjournal.v10i2.206-220

Abstract

AbstrakSistem Informasi Satuan Kredit Kemahasiswaan (SIMSKK) yang digunakan untuk mengelola aktivitas non-akademik mahasiswa dan mendukung capaian pembelajaran. Penelitian ini bertujuan mengukur kesuksesan implementasi SIMSKK menggunakan Model DeLone dan McLean (2003) yang mencakup kualitas sistem, kualitas informasi, kualitas layanan, kepuasan pengguna, dan manfaat bersih. Data diperoleh melalui kuesioner online kepada 97 mahasiswa aktif (ditentukan dengan rumus Slovin) dan dianalisis dengan SEM-PLS. Hasil menunjukkan bahwa kualitas informasi berpengaruh signifikan terhadap kepuasan pengguna (t = 7,691; p < 0,001) dan kepuasan pengguna signifikan terhadap manfaat bersih (t = 26,528; p < 0,001). Sebaliknya, kualitas sistem dan layanan tidak berpengaruh signifikan. Penelitian ini menegaskan pentingnya peningkatan kualitas informasi dan layanan agar SIMSKK memberi manfaat optimal bagi mahasiswa.Kata kunci: Model Delone dan McLean, sistem informasi kredit kemahasiswaan, SEM-PLS, kepuasaan pengguna, manfaat bersih AbstractThe use of the Student Credit Information System (SIMSKK) to manage students’ non-academic activities and support learning outcomes. This study aims to measure the success of SIMSKK implementation using the DeLone and McLean Information System Success Model (2003), which includes system quality, information quality, service quality, user satisfaction, and net benefits. Data were collected through an online questionnaire distributed to 97 active students (determined using Slovin’s formula) and analyzed with SEM-PLS. Results show that information quality significantly affects user satisfaction (t = 7.691; p < 0.001), and user satisfaction significantly impacts net benefits (t = 26.528; p < 0.001). Conversely, system quality and service quality have no significant effect. The study highlights the importance of enhancing information quality and service to maximize SIMSKK benefits.Keywords: DeLone and McLean Model, Student Credit Information System, SEM-PLS,  statisfaction, net benefits
Renovator: Resilience System in Microservices Architecture Using Fault Tolerance Factor PUTRA, KURNIA RAMADHAN; UMAROH, SOFIA; FAHRUDIN, NUR FITRIANTI; PANDJI, PRAMBUDHI WIBOWO
MIND (Multimedia Artificial Intelligent Networking Database) Journal Vol 10, No 2 (2025): MIND Journal
Publisher : Institut Teknologi Nasional Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/mindjournal.v10i2.235-249

Abstract

ABSTRAKArsitektur microservices menghadapi tantangan dalam menjaga ketahanan layanan akibat cascading failure, ketergantungan antarlayanan yang dinamis, serta keterbatasan mekanisme fault tolerance berbasis ambang statis. Pendekatan seperti circuit breaker dan bulkhead hanya memberi perlindungan terbatas ketika beban dan latensi berubah cepat. Untuk menjawab gap tersebut, penelitian ini memperkenalkan Renovator, kerangka kerja ketahanan yang memperluas circuit breaker melalui pemantauan adaptif dan pemulihan otomatis. Evaluasi pada simulasi Sistem Presensi dengan empat skenario yaitu cascading failure, latency spike, normal load, dan single-service failure menunjukkan peningkatan signifikan dibandingkan baseline: ketersediaan naik (86,31% menjadi 93,95%), MTTR berkurang 49–67%, tingkat kesalahan turun 55–63%, serta latensi membaik 20–27% tanpa memengaruhi throughput. Kontribusi utama penelitian ini adalah pengembangan Renovator sebagai mekanisme circuit breaker yang lebih adaptif dan otomatis untuk meningkatkan ketahanan microservices.Kata kunci: microservices, fault tolerance, circuit breaker, MSA resilienceABSTRACTMicroservices architectures face resilience challenges due to cascading failures, dynamic dependencies, and the limitations of fault tolerance mechanisms that rely on static thresholds. Techniques such as Circuit Breaker and Bulkhead provide only partial protection under rapidly changing workloads. To address this gap, this study introduces Renovator, a resilience framework that enhances circuit breaker functionality through adaptive monitoring and automated recovery. Evaluated on a simulated Attendance System under four scenarios—cascading failure, latency spike, normal load, and single-service failure, Renovator shows notable improvements over the baseline: availability increases (from 86.31% to 93.95%), MTTR decreases by 49–67%, error rates drop 55–63%, and latency improves 20–27% with no throughput degradation. The main contribution is an adaptive and automated circuit-breaker–based framework to strengthen microservices resilience.Keywords: microservices, fault tolerance, circuit breaker, MSA resilience
Co-Authors Adinda, Najwa Afriyanti Dwi Kartika Angelica, Evlyn Arsyad, Zulkifli Astri Rahayu FAHRUDIN, NUR FITRIANTI Fitrianti, Nur HERNAWAN, HASNAURA ATHAVANIA Ibrahim, Andrika Zainal Istifah Istifah, Istifah LAUTAN, GAMAS BLOORY Nurjaman, Asep Rizal Pandji, Prambudhi Wibowo Putra, Kurnia Ramadhan Putra, Kurnia Ramahdan Ramadhan Putra, Kurnia UTAMI, SABRINA AZIZA Yudianto, Fauzi